Merge 3.8-rc5 into tty-next
This resolves a number of tty driver merge issues found in linux-next
Signed-off-by: Greg Kroah-Hartman <[email protected]>
diff --git a/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt b/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt
new file mode 100644
index 0000000..392a4493
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt
@@ -0,0 +1,24 @@
+NVIDIA Tegra20/Tegra30 high speed (DMA based) UART controller driver.
+
+Required properties:
+- compatible : should be "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart".
+- reg: Should contain UART controller registers location and length.
+- interrupts: Should contain UART controller interrupts.
+- nvidia,dma-request-selector : The Tegra DMA controller's phandle and
+ request selector for this UART controller.
+
+Optional properties:
+- nvidia,enable-modem-interrupt: Enable modem interrupts. Should be enable
+ only if all 8 lines of UART controller are pinmuxed.
+
+Example:
+
+serial@70006000 {
+ compatible = "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart";
+ reg = <0x70006000 0x40>;
+ reg-shift = <2>;
+ interrupts = <0 36 0x04>;
+ nvidia,dma-request-selector = <&apbdma 8>;
+ nvidia,enable-modem-interrupt;
+ status = "disabled";
+};
diff --git a/Documentation/devicetree/bindings/tty/serial/arc-uart.txt b/Documentation/devicetree/bindings/tty/serial/arc-uart.txt
new file mode 100644
index 0000000..c3bd8f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/tty/serial/arc-uart.txt
@@ -0,0 +1,26 @@
+* Synopsys ARC UART : Non standard UART used in some of the ARC FPGA boards
+
+Required properties:
+- compatible : "snps,arc-uart"
+- reg : offset and length of the register set for the device.
+- interrupts : device interrupt
+- clock-frequency : the input clock frequency for the UART
+- baud : baud rate for UART
+
+e.g.
+
+arcuart0: serial@c0fc1000 {
+ compatible = "snps,arc-uart";
+ reg = <0xc0fc1000 0x100>;
+ interrupts = <5>;
+ clock-frequency = <80000000>;
+ baud = <115200>;
+ status = "okay";
+};
+
+Note: Each port should have an alias correctly numbered in "aliases" node.
+
+e.g.
+aliases {
+ serial0 = &arcuart0;
+};
diff --git a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
index 6588b69..8e080b8 100644
--- a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
+++ b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
@@ -5,10 +5,16 @@
- reg : Address and length of the register set
- interrupts : Should contain uart interrupt
+Optional properties:
+- location : Decides the location of the USART I/O pins.
+ Allowed range : [0 .. 5]
+ Default: 0
+
Example:
uart@0x4000c400 {
compatible = "efm32,uart";
reg = <0x4000c400 0x400>;
interrupts = <15>;
+ location = <0>;
};
diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 0a25a91..067c47d 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -133,6 +133,16 @@
Interrupts: locally disabled.
This call must not sleep
+ send_xchar(port,ch)
+ Transmit a high priority character, even if the port is stopped.
+ This is used to implement XON/XOFF flow control and tcflow(). If
+ the serial driver does not implement this function, the tty core
+ will append the character to the circular buffer and then call
+ start_tx() / stop_tx() to flush the data out.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
stop_rx(port)
Stop receiving characters; the port is in the process of
being closed.
@@ -242,9 +252,8 @@
pm(port,state,oldstate)
Perform any power management related activities on the specified
- port. State indicates the new state (defined by ACPI D0-D3),
- oldstate indicates the previous state. Essentially, D0 means
- fully on, D3 means powered down.
+ port. State indicates the new state (defined by
+ enum uart_pm_state), oldstate indicates the previous state.
This function should not be used to grab any resources.
@@ -255,6 +264,10 @@
Locking: none.
Interrupts: caller dependent.
+ set_wake(port,state)
+ Enable/disable power management wakeup on serial activity. Not
+ currently implemented.
+
type(port)
Return a pointer to a string constant describing the specified
port, or return NULL, in which case the string 'unknown' is
@@ -307,6 +320,31 @@
Locking: none.
Interrupts: caller dependent.
+ poll_init(port)
+ Called by kgdb to perform the minimal hardware initialization needed
+ to support poll_put_char() and poll_get_char(). Unlike ->startup()
+ this should not request interrupts.
+
+ Locking: tty_mutex and tty_port->mutex taken.
+ Interrupts: n/a.
+
+ poll_put_char(port,ch)
+ Called by kgdb to write a single character directly to the serial
+ port. It can and should block until there is space in the TX FIFO.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ poll_get_char(port)
+ Called by kgdb to read a single character directly from the serial
+ port. If data is available, it should be returned; otherwise
+ the function should return NO_POLL_CHAR immediately.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
Other functions
---------------
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 9d5904c..1ef196d 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -125,6 +125,7 @@
config ALPHA_GENERIC
bool "Generic"
+ depends on TTY
help
A generic kernel will run on all supported Alpha hardware.
@@ -491,6 +492,7 @@
config ALPHA_SRM
bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
+ depends on TTY
default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
---help---
There are two different types of booting firmware on Alphas: SRM,
diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 59b7bba..6f01d9a 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -44,7 +44,7 @@
/* called with callback_lock held */
static int
-srmcons_do_receive_chars(struct tty_struct *tty)
+srmcons_do_receive_chars(struct tty_port *port)
{
srmcons_result result;
int count = 0, loops = 0;
@@ -52,13 +52,13 @@
do {
result.as_long = callback_getc(0);
if (result.bits.status < 2) {
- tty_insert_flip_char(tty, (char)result.bits.c, 0);
+ tty_insert_flip_char(port, (char)result.bits.c, 0);
count++;
}
} while((result.bits.status & 1) && (++loops < 10));
if (count)
- tty_schedule_flip(tty);
+ tty_schedule_flip(port);
return count;
}
@@ -73,7 +73,7 @@
local_irq_save(flags);
if (spin_trylock(&srmcons_callback_lock)) {
- if (!srmcons_do_receive_chars(port->tty))
+ if (!srmcons_do_receive_chars(port))
incr = 100;
spin_unlock(&srmcons_callback_lock);
}
@@ -88,7 +88,7 @@
/* called with callback_lock held */
static int
-srmcons_do_write(struct tty_struct *tty, const char *buf, int count)
+srmcons_do_write(struct tty_port *port, const char *buf, int count)
{
static char str_cr[1] = "\r";
long c, remaining = count;
@@ -113,10 +113,10 @@
cur += result.bits.c;
/*
- * Check for pending input iff a tty was provided
+ * Check for pending input iff a tty port was provided
*/
- if (tty)
- srmcons_do_receive_chars(tty);
+ if (port)
+ srmcons_do_receive_chars(port);
}
while (need_cr) {
@@ -135,7 +135,7 @@
unsigned long flags;
spin_lock_irqsave(&srmcons_callback_lock, flags);
- srmcons_do_write(tty, (const char *) buf, count);
+ srmcons_do_write(tty->port, (const char *) buf, count);
spin_unlock_irqrestore(&srmcons_callback_lock, flags);
return count;
diff --git a/arch/arm/boot/dts/vt8500.dtsi b/arch/arm/boot/dts/vt8500.dtsi
index d8645e9..cf31ced 100644
--- a/arch/arm/boot/dts/vt8500.dtsi
+++ b/arch/arm/boot/dts/vt8500.dtsi
@@ -45,6 +45,38 @@
compatible = "fixed-clock";
clock-frequency = <24000000>;
};
+
+ clkuart0: uart0 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <1>;
+ };
+
+ clkuart1: uart1 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <2>;
+ };
+
+ clkuart2: uart2 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <3>;
+ };
+
+ clkuart3: uart3 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <4>;
+ };
};
};
@@ -83,28 +115,28 @@
compatible = "via,vt8500-uart";
reg = <0xd8200000 0x1040>;
interrupts = <32>;
- clocks = <&ref24>;
+ clocks = <&clkuart0>;
};
uart@d82b0000 {
compatible = "via,vt8500-uart";
reg = <0xd82b0000 0x1040>;
interrupts = <33>;
- clocks = <&ref24>;
+ clocks = <&clkuart1>;
};
uart@d8210000 {
compatible = "via,vt8500-uart";
reg = <0xd8210000 0x1040>;
interrupts = <47>;
- clocks = <&ref24>;
+ clocks = <&clkuart2>;
};
uart@d82c0000 {
compatible = "via,vt8500-uart";
reg = <0xd82c0000 0x1040>;
interrupts = <50>;
- clocks = <&ref24>;
+ clocks = <&clkuart3>;
};
rtc@d8100000 {
diff --git a/arch/arm/boot/dts/wm8505.dtsi b/arch/arm/boot/dts/wm8505.dtsi
index 330f833..e74a1c0 100644
--- a/arch/arm/boot/dts/wm8505.dtsi
+++ b/arch/arm/boot/dts/wm8505.dtsi
@@ -59,6 +59,54 @@
compatible = "fixed-clock";
clock-frequency = <24000000>;
};
+
+ clkuart0: uart0 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <1>;
+ };
+
+ clkuart1: uart1 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <2>;
+ };
+
+ clkuart2: uart2 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <3>;
+ };
+
+ clkuart3: uart3 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <4>;
+ };
+
+ clkuart4: uart4 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <22>;
+ };
+
+ clkuart5: uart5 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <23>;
+ };
};
};
@@ -96,42 +144,42 @@
compatible = "via,vt8500-uart";
reg = <0xd8200000 0x1040>;
interrupts = <32>;
- clocks = <&ref24>;
+ clocks = <&clkuart0>;
};
uart@d82b0000 {
compatible = "via,vt8500-uart";
reg = <0xd82b0000 0x1040>;
interrupts = <33>;
- clocks = <&ref24>;
+ clocks = <&clkuart1>;
};
uart@d8210000 {
compatible = "via,vt8500-uart";
reg = <0xd8210000 0x1040>;
interrupts = <47>;
- clocks = <&ref24>;
+ clocks = <&clkuart2>;
};
uart@d82c0000 {
compatible = "via,vt8500-uart";
reg = <0xd82c0000 0x1040>;
interrupts = <50>;
- clocks = <&ref24>;
+ clocks = <&clkuart3>;
};
uart@d8370000 {
compatible = "via,vt8500-uart";
reg = <0xd8370000 0x1040>;
interrupts = <31>;
- clocks = <&ref24>;
+ clocks = <&clkuart4>;
};
uart@d8380000 {
compatible = "via,vt8500-uart";
reg = <0xd8380000 0x1040>;
interrupts = <30>;
- clocks = <&ref24>;
+ clocks = <&clkuart5>;
};
rtc@d8100000 {
diff --git a/arch/arm/boot/dts/wm8650.dtsi b/arch/arm/boot/dts/wm8650.dtsi
index 83b9467..db3c0a1 100644
--- a/arch/arm/boot/dts/wm8650.dtsi
+++ b/arch/arm/boot/dts/wm8650.dtsi
@@ -75,6 +75,22 @@
reg = <0x204>;
};
+ clkuart0: uart0 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <1>;
+ };
+
+ clkuart1: uart1 {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&ref24>;
+ enable-reg = <0x250>;
+ enable-bit = <2>;
+ };
+
arm: arm {
#clock-cells = <0>;
compatible = "via,vt8500-device-clock";
@@ -128,14 +144,14 @@
compatible = "via,vt8500-uart";
reg = <0xd8200000 0x1040>;
interrupts = <32>;
- clocks = <&ref24>;
+ clocks = <&clkuart0>;
};
uart@d82b0000 {
compatible = "via,vt8500-uart";
reg = <0xd82b0000 0x1040>;
interrupts = <33>;
- clocks = <&ref24>;
+ clocks = <&clkuart1>;
};
rtc@d8100000 {
diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 401c126..5914b56 100644
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -44,14 +44,14 @@
compatible = "xlnx,xuartps";
reg = <0xE0000000 0x1000>;
interrupts = <0 27 4>;
- clock = <50000000>;
+ clocks = <&uart_clk 0>;
};
uart1: uart@e0001000 {
compatible = "xlnx,xuartps";
reg = <0xE0001000 0x1000>;
interrupts = <0 50 4>;
- clock = <50000000>;
+ clocks = <&uart_clk 1>;
};
slcr: slcr@f8000000 {
diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
index 8d513a8..d84707d5 100644
--- a/arch/ia64/hp/sim/Kconfig
+++ b/arch/ia64/hp/sim/Kconfig
@@ -8,6 +8,7 @@
config HP_SIMSERIAL
bool "Simulated serial driver support"
+ depends on TTY
config HP_SIMSERIAL_CONSOLE
bool "Console for HP simulator"
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index fc3924d..da2f319 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -53,7 +53,7 @@
static struct console *console;
-static void receive_chars(struct tty_struct *tty)
+static void receive_chars(struct tty_port *port)
{
unsigned char ch;
static unsigned char seen_esc = 0;
@@ -81,10 +81,10 @@
}
seen_esc = 0;
- if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+ if (tty_insert_flip_char(port, ch, TTY_NORMAL) == 0)
break;
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
/*
@@ -93,18 +93,9 @@
static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
{
struct serial_state *info = dev_id;
- struct tty_struct *tty = tty_port_tty_get(&info->port);
- if (!tty) {
- printk(KERN_INFO "%s: tty=0 problem\n", __func__);
- return IRQ_NONE;
- }
- /*
- * pretty simple in our case, because we only get interrupts
- * on inbound traffic
- */
- receive_chars(tty);
- tty_kref_put(tty);
+ receive_chars(&info->port);
+
return IRQ_HANDLED;
}
@@ -435,7 +426,7 @@
struct tty_port *port = &info->port;
tty->driver_data = info;
- tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
/*
* figure out which console to use (should be one already)
diff --git a/arch/m68k/Kconfig.devices b/arch/m68k/Kconfig.devices
index c4cdfe44..4bc945d 100644
--- a/arch/m68k/Kconfig.devices
+++ b/arch/m68k/Kconfig.devices
@@ -41,7 +41,7 @@
config NFCON
tristate "NatFeat console driver"
- depends on NATFEAT
+ depends on TTY && NATFEAT
help
Say Y to include support for the ARAnyM NatFeat console driver
which allows the console output to be redirected to the stderr
diff --git a/arch/mips/sni/a20r.c b/arch/mips/sni/a20r.c
index 9cb9d43..e05ad4d 100644
--- a/arch/mips/sni/a20r.c
+++ b/arch/mips/sni/a20r.c
@@ -118,7 +118,7 @@
}
};
-#include <linux/platform_data/sccnxp.h>
+#include <linux/platform_data/serial-sccnxp.h>
static struct sccnxp_pdata sccnxp_data = {
.reg_shift = 2,
diff --git a/arch/mn10300/kernel/mn10300-serial.c b/arch/mn10300/kernel/mn10300-serial.c
index 81d5cb9..bf6e949 100644
--- a/arch/mn10300/kernel/mn10300-serial.c
+++ b/arch/mn10300/kernel/mn10300-serial.c
@@ -524,7 +524,7 @@
static void mn10300_serial_receive_interrupt(struct mn10300_serial_port *port)
{
struct uart_icount *icount = &port->uart.icount;
- struct tty_struct *tty = port->uart.state->port.tty;
+ struct tty_port *tport = &port->uart.state->port;
unsigned ix;
int count;
u8 st, ch, push, status, overrun;
@@ -534,10 +534,10 @@
push = 0;
count = CIRC_CNT(port->rx_inp, port->rx_outp, MNSC_BUFFER_SIZE);
- count = tty_buffer_request_room(tty, count);
+ count = tty_buffer_request_room(tport, count);
if (count == 0) {
- if (!tty->low_latency)
- tty_flip_buffer_push(tty);
+ if (!tport->low_latency)
+ tty_flip_buffer_push(tport);
return;
}
@@ -545,8 +545,8 @@
/* pull chars out of the hat */
ix = ACCESS_ONCE(port->rx_outp);
if (CIRC_CNT(port->rx_inp, ix, MNSC_BUFFER_SIZE) == 0) {
- if (push && !tty->low_latency)
- tty_flip_buffer_push(tty);
+ if (push && !tport->low_latency)
+ tty_flip_buffer_push(tport);
return;
}
@@ -666,19 +666,19 @@
else
flag = TTY_NORMAL;
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(tport, ch, flag);
}
/* overrun is special, since it's reported immediately, and doesn't
* affect the current character
*/
if (overrun)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
count--;
if (count <= 0) {
- if (!tty->low_latency)
- tty_flip_buffer_push(tty);
+ if (!tport->low_latency)
+ tty_flip_buffer_push(tport);
return;
}
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index b77feff..df5beb6 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -23,6 +23,7 @@
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
+ select TTY # Needed for pdc_cons.c
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index efc5e7d..d5cae55 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -138,23 +138,17 @@
static void pdc_console_poll(unsigned long unused)
{
int data, count = 0;
- struct tty_struct *tty = tty_port_tty_get(&tty_port);
-
- if (!tty)
- return;
while (1) {
data = pdc_console_poll_key(NULL);
if (data == -1)
break;
- tty_insert_flip_char(tty, data & 0xFF, TTY_NORMAL);
+ tty_insert_flip_char(&tty_port, data & 0xFF, TTY_NORMAL);
count ++;
}
if (count)
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_flip_buffer_push(&tty_port);
if (pdc_cons.flags & CON_ENABLED)
mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 875d008..ae8a7ca 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -121,6 +121,7 @@
def_bool n
config HVC_TILE
+ depends on TTY
select HVC_DRIVER
def_bool y
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index 648121b..bceee66 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -12,6 +12,7 @@
select GENERIC_CPU_DEVICES
select GENERIC_IO
select GENERIC_CLOCKEVENTS
+ select TTY # Needed for line.c
config MMU
bool
diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h
index 02b5a76..78f1b89 100644
--- a/arch/um/drivers/chan.h
+++ b/arch/um/drivers/chan.h
@@ -27,8 +27,7 @@
void *data;
};
-extern void chan_interrupt(struct line *line,
- struct tty_struct *tty, int irq);
+extern void chan_interrupt(struct line *line, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
const struct chan_opts *opts, char **error_out);
extern int write_chan(struct chan *chan, const char *buf, int len,
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index e9a0abc..15c553c 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -81,12 +81,6 @@
};
#endif /* CONFIG_NOCONFIG_CHAN */
-static void tty_receive_char(struct tty_struct *tty, char ch)
-{
- if (tty)
- tty_insert_flip_char(tty, ch, TTY_NORMAL);
-}
-
static int open_one_chan(struct chan *chan)
{
int fd, err;
@@ -137,11 +131,9 @@
static void line_timer_cb(struct work_struct *work)
{
struct line *line = container_of(work, struct line, task.work);
- struct tty_struct *tty = tty_port_tty_get(&line->port);
if (!line->throttled)
- chan_interrupt(line, tty, line->driver->read_irq);
- tty_kref_put(tty);
+ chan_interrupt(line, line->driver->read_irq);
}
int enable_chan(struct line *line)
@@ -552,8 +544,9 @@
return 0;
}
-void chan_interrupt(struct line *line, struct tty_struct *tty, int irq)
+void chan_interrupt(struct line *line, int irq)
{
+ struct tty_port *port = &line->port;
struct chan *chan = line->chan_in;
int err;
char c;
@@ -562,21 +555,24 @@
goto out;
do {
- if (tty && !tty_buffer_request_room(tty, 1)) {
+ if (!tty_buffer_request_room(port, 1)) {
schedule_delayed_work(&line->task, 1);
goto out;
}
err = chan->ops->read(chan->fd, &c, chan->data);
if (err > 0)
- tty_receive_char(tty, c);
+ tty_insert_flip_char(port, c, TTY_NORMAL);
} while (err > 0);
if (err == 0)
reactivate_fd(chan->fd, irq);
if (err == -EIO) {
if (chan->primary) {
- if (tty != NULL)
+ struct tty_struct *tty = tty_port_tty_get(&line->port);
+ if (tty != NULL) {
tty_hangup(tty);
+ tty_kref_put(tty);
+ }
if (line->chan_out != chan)
close_one_chan(line->chan_out, 1);
}
@@ -585,6 +581,5 @@
return;
}
out:
- if (tty)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 9ffc28b..f1b3857 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -19,11 +19,10 @@
{
struct chan *chan = data;
struct line *line = chan->line;
- struct tty_struct *tty = tty_port_tty_get(&line->port);
if (line)
- chan_interrupt(line, tty, irq);
- tty_kref_put(tty);
+ chan_interrupt(line, irq);
+
return IRQ_HANDLED;
}
@@ -234,7 +233,7 @@
struct line *line = tty->driver_data;
line->throttled = 0;
- chan_interrupt(line, tty, line->driver->read_irq);
+ chan_interrupt(line, line->driver->read_irq);
/*
* Maybe there is enough stuff pending that calling the interrupt
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 5aab1ac..ad64c73 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -132,6 +132,7 @@
config XTENSA_PLATFORM_ISS
bool "ISS"
+ depends on TTY
select XTENSA_CALIBRATE_CCOUNT
select SERIAL_CONSOLE
select XTENSA_ISS_NETWORK
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 8207a11..da9866f 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -58,7 +58,8 @@
tty->port = &serial_port;
spin_lock(&timer_lock);
if (tty->count == 1) {
- setup_timer(&serial_timer, rs_poll, (unsigned long)tty);
+ setup_timer(&serial_timer, rs_poll,
+ (unsigned long)&serial_port);
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
}
spin_unlock(&timer_lock);
@@ -97,8 +98,7 @@
static void rs_poll(unsigned long priv)
{
- struct tty_struct* tty = (struct tty_struct*) priv;
-
+ struct tty_port *port = (struct tty_port *)priv;
struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
int i = 0;
unsigned char c;
@@ -107,12 +107,12 @@
while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
__simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
- tty_insert_flip_char(tty, c, TTY_NORMAL);
+ tty_insert_flip_char(port, c, TTY_NORMAL);
i++;
}
if (i)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index e9f203e..fdfd61a 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -26,6 +26,7 @@
config BT_HCIUART
tristate "HCI UART driver"
+ depends on TTY
help
Bluetooth HCI UART driver.
This driver is required if you want to use Bluetooth devices with
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 72bedad..3bb6fa3 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -53,7 +53,7 @@
config TTY_PRINTK
bool "TTY driver to output user messages via printk"
- depends on EXPERT
+ depends on EXPERT && TTY
default n
---help---
If you say Y here, the support for writing user messages (i.e.
@@ -159,7 +159,7 @@
config VIRTIO_CONSOLE
tristate "Virtio console"
- depends on VIRTIO
+ depends on VIRTIO && TTY
select HVC_DRIVER
help
Virtio console for use with lguest and other hypervisors.
@@ -392,6 +392,7 @@
config R3964
tristate "Siemens R3964 line discipline"
+ depends on TTY
---help---
This driver allows synchronous communication with devices using the
Siemens R3964 packet protocol. Unless you are dealing with special
@@ -439,7 +440,7 @@
config MWAVE
tristate "ACP Modem (Mwave) support"
- depends on X86
+ depends on X86 && TTY
select SERIAL_8250
---help---
The ACP modem (Mwave) for Linux is a WinModem. It is composed of a
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 6614416..2a166d5 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -7,7 +7,7 @@
config SYNCLINK_CS
tristate "SyncLink PC Card support"
- depends on PCMCIA
+ depends on PCMCIA && TTY
help
Enable support for the SyncLink PC Card serial adapter, running
asynchronous and HDLC communications up to 512Kbps. The port is
@@ -45,7 +45,7 @@
config IPWIRELESS
tristate "IPWireless 3G UMTS PCMCIA card support"
- depends on PCMCIA && NETDEVICES
+ depends on PCMCIA && NETDEVICES && TTY
select PPP
help
This is a driver for 3G UMTS PCMCIA card from IPWireless company. In
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index b66eaa0..34e52ed 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -210,7 +210,7 @@
char testing_irq;
unsigned int init_error; /* startup error (DIAGS) */
- char flag_buf[MAX_ASYNC_BUFFER_SIZE];
+ char *flag_buf;
bool drop_rts_on_tx_done;
struct _input_signal_events input_signal_events;
@@ -765,9 +765,6 @@
struct tty_struct *tty;
int action;
- if (!info)
- return;
-
if (debug_level >= DEBUG_LEVEL_BH)
printk( "%s(%d):bh_handler(%s) entry\n",
__FILE__,__LINE__,info->device_name);
@@ -886,21 +883,14 @@
issue_command(info, CHA, CMD_RXFIFO);
}
-static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
+static void rx_ready_async(MGSLPC_INFO *info, int tcd)
{
+ struct tty_port *port = &info->port;
unsigned char data, status, flag;
int fifo_count;
int work = 0;
struct mgsl_icount *icount = &info->icount;
- if (!tty) {
- /* tty is not available anymore */
- issue_command(info, CHA, CMD_RXRESET);
- if (debug_level >= DEBUG_LEVEL_ISR)
- printk("%s(%d):rx_ready_async(tty=NULL)\n",__FILE__,__LINE__);
- return;
- }
-
if (tcd) {
/* early termination, get FIFO count from RBCL register */
fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
@@ -913,7 +903,7 @@
} else
fifo_count = 32;
- tty_buffer_request_room(tty, fifo_count);
+ tty_buffer_request_room(port, fifo_count);
/* Flush received async data to receive data buffer. */
while (fifo_count) {
data = read_reg(info, CHA + RXFIFO);
@@ -944,7 +934,7 @@
else if (status & BIT6)
flag = TTY_FRAME;
}
- work += tty_insert_flip_char(tty, data, flag);
+ work += tty_insert_flip_char(port, data, flag);
}
issue_command(info, CHA, CMD_RXFIFO);
@@ -957,7 +947,7 @@
}
if (work)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
@@ -1217,7 +1207,7 @@
if (info->params.mode == MGSL_MODE_HDLC)
rx_ready_hdlc(info, isr & IRQ_RXEOM);
else
- rx_ready_async(info, isr & IRQ_RXEOM, tty);
+ rx_ready_async(info, isr & IRQ_RXEOM);
}
/* transmit IRQs */
@@ -2521,7 +2511,7 @@
goto cleanup;
}
- tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -2674,6 +2664,14 @@
if (info->rx_buf == NULL)
return -ENOMEM;
+ /* unused flag buffer to satisfy receive_buf calling interface */
+ info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL);
+ if (!info->flag_buf) {
+ kfree(info->rx_buf);
+ info->rx_buf = NULL;
+ return -ENOMEM;
+ }
+
rx_reset_buffers(info);
return 0;
}
@@ -2682,6 +2680,8 @@
{
kfree(info->rx_buf);
info->rx_buf = NULL;
+ kfree(info->flag_buf);
+ info->flag_buf = NULL;
}
static int claim_resources(MGSLPC_INFO *info)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index bdca511..cf474b2d 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -803,7 +803,7 @@
config I2C_TAOS_EVM
tristate "TAOS evaluation module"
- depends on EXPERIMENTAL
+ depends on EXPERIMENTAL && TTY
select SERIO
select SERIO_SERPORT
default n
diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig
index 56eb471..055bcab 100644
--- a/drivers/input/joystick/Kconfig
+++ b/drivers/input/joystick/Kconfig
@@ -132,6 +132,8 @@
source "drivers/input/joystick/iforce/Kconfig"
+if TTY
+
config JOYSTICK_WARRIOR
tristate "Logitech WingMan Warrior joystick"
select SERIO
@@ -205,6 +207,8 @@
To compile this driver as a module, choose M here: the
module will be called zhenhua.
+endif # TTY
+
config JOYSTICK_DB9
tristate "Multisystem, Sega Genesis, Saturn joysticks and gamepads"
depends on PARPORT
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 5a240c60..008f96a 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -69,6 +69,7 @@
config KEYBOARD_ATKBD
tristate "AT keyboard" if EXPERT || !X86
default y
+ depends on TTY
select SERIO
select SERIO_LIBPS2
select SERIO_I8042 if X86
@@ -153,6 +154,7 @@
config KEYBOARD_LKKBD
tristate "DECstation/VAXstation LK201/LK401 keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you want to use a LK201 or LK401 style serial
@@ -268,7 +270,7 @@
config KEYBOARD_HIL
tristate "HP HIL keyboard/pointer support"
- depends on GSC || HP300
+ depends on (GSC || HP300) && TTY
default y
select HP_SDC
select HIL_MLC
@@ -400,6 +402,7 @@
config KEYBOARD_NEWTON
tristate "Newton keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you have a Newton keyboard on a serial port.
@@ -479,6 +482,8 @@
To compile this driver as a module, choose M here: the
module will be called samsung-keypad.
+if TTY
+
config KEYBOARD_STOWAWAY
tristate "Stowaway keyboard"
select SERIO
@@ -501,6 +506,8 @@
To compile this driver as a module, choose M here: the
module will be called sunkbd.
+endif # TTY
+
config KEYBOARD_SH_KEYSC
tristate "SuperH KEYSC keypad support"
depends on SUPERH || ARCH_SHMOBILE
@@ -597,6 +604,7 @@
config KEYBOARD_XTKBD
tristate "XT keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you want to use the old IBM PC/XT keyboard (or
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index cd6268c..fc160f7 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -14,6 +14,7 @@
config MOUSE_PS2
tristate "PS/2 mouse"
+ depends on TTY
default y
select SERIO
select SERIO_LIBPS2
@@ -138,6 +139,7 @@
config MOUSE_SERIAL
tristate "Serial mouse"
+ depends on TTY
select SERIO
help
Say Y here if you have a serial (RS-232, COM port) mouse connected
@@ -262,6 +264,7 @@
config MOUSE_VSXXXAA
tristate "DEC VSXXX-AA/GA mouse and VSXXX-AB tablet"
+ depends on TTY
select SERIO
help
Say Y (or M) if you want to use a DEC VSXXX-AA (hockey
diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig
index 4a4e182..81ee755 100644
--- a/drivers/input/serio/Kconfig
+++ b/drivers/input/serio/Kconfig
@@ -4,6 +4,7 @@
config SERIO
tristate "Serial I/O support" if EXPERT || !X86
default y
+ depends on TTY
help
Say Yes here if you have any input device that uses serial I/O to
communicate with the system. This includes the
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 515cfe7..3d6f548 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -192,6 +192,8 @@
To compile this driver as a module, choose M here: the
module will be called da9052_tsi.
+if TTY
+
config TOUCHSCREEN_DYNAPRO
tristate "Dynapro serial touchscreen"
select SERIO
@@ -216,6 +218,8 @@
To compile this driver as a module, choose M here: the
module will be called hampshire.
+endif # TTY
+
config TOUCHSCREEN_EETI
tristate "EETI touchscreen panel support"
depends on I2C
@@ -237,6 +241,7 @@
config TOUCHSCREEN_FUJITSU
tristate "Fujitsu serial touchscreen"
+ depends on TTY
select SERIO
help
Say Y here if you have the Fujitsu touchscreen (such as one
@@ -275,6 +280,8 @@
To compile this driver as a module, choose M here: the
module will be called s3c2410_ts.
+if TTY
+
config TOUCHSCREEN_GUNZE
tristate "Gunze AHL-51S touchscreen"
select SERIO
@@ -311,6 +318,8 @@
To compile this driver as a module, choose M here: the
module will be called wacom_w8001.
+endif # TTY
+
config TOUCHSCREEN_WACOM_I2C
tristate "Wacom Tablet support (I2C)"
depends on I2C
@@ -369,6 +378,8 @@
To compile this driver as a module, choose M here: the
module will be called mms114.
+if TTY
+
config TOUCHSCREEN_MTOUCH
tristate "MicroTouch serial touchscreens"
select SERIO
@@ -393,6 +404,8 @@
To compile this driver as a module, choose M here: the
module will be called inexio.
+endif # TTY
+
config TOUCHSCREEN_INTEL_MID
tristate "Intel MID platform resistive touchscreen"
depends on INTEL_SCU_IPC
@@ -450,6 +463,7 @@
config TOUCHSCREEN_PENMOUNT
tristate "Penmount serial touchscreen"
+ depends on TTY
select SERIO
help
Say Y here if you have a Penmount serial touchscreen connected to
@@ -493,6 +507,8 @@
To compile this driver as a module, choose M here: the
module will be called tnetv107x-ts.
+if TTY
+
config TOUCHSCREEN_TOUCHRIGHT
tristate "Touchright serial touchscreen"
select SERIO
@@ -517,6 +533,8 @@
To compile this driver as a module, choose M here: the
module will be called touchwin.
+endif # TTY
+
config TOUCHSCREEN_TI_AM335X_TSC
tristate "TI Touchscreen Interface"
depends on MFD_TI_AM335X_TSCADC
@@ -790,6 +808,8 @@
Say Y here if you have an EasyTouch USB Touch controller.
If unsure, say N.
+if TTY
+
config TOUCHSCREEN_TOUCHIT213
tristate "Sahara TouchIT-213 touchscreen"
select SERIO
@@ -813,6 +833,8 @@
To compile this driver as a module, choose M here: the
module will be called tsc40.
+endif # TTY
+
config TOUCHSCREEN_TSC2005
tristate "TSC2005 based touchscreens"
depends on SPI_MASTER && GENERIC_HARDIRQS
diff --git a/drivers/ipack/devices/Kconfig b/drivers/ipack/devices/Kconfig
index 0b82fdc..907a8cb 100644
--- a/drivers/ipack/devices/Kconfig
+++ b/drivers/ipack/devices/Kconfig
@@ -1,6 +1,6 @@
config SERIAL_IPOCTAL
tristate "IndustryPack IP-OCTAL uart support"
- depends on IPACK_BUS
+ depends on IPACK_BUS && TTY
help
This driver supports the IPOCTAL serial port device for the IndustryPack bus.
default n
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index 576d53d..ab20a08 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -133,9 +133,9 @@
return 0;
}
-static void ipoctal_irq_rx(struct ipoctal_channel *channel,
- struct tty_struct *tty, u8 sr)
+static void ipoctal_irq_rx(struct ipoctal_channel *channel, u8 sr)
{
+ struct tty_port *port = &channel->tty_port;
unsigned char value;
unsigned char flag = TTY_NORMAL;
u8 isr;
@@ -149,7 +149,7 @@
if (sr & SR_OVERRUN_ERROR) {
channel->stats.overrun_err++;
/* Overrun doesn't affect the current character*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
}
if (sr & SR_PARITY_ERROR) {
channel->stats.parity_err++;
@@ -165,7 +165,7 @@
flag = TTY_BREAK;
}
}
- tty_insert_flip_char(tty, value, flag);
+ tty_insert_flip_char(port, value, flag);
/* Check if there are more characters in RX FIFO
* If there are more, the isr register for this channel
@@ -175,7 +175,7 @@
sr = ioread8(&channel->regs->r.sr);
} while (isr & channel->isr_rx_rdy_mask);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
static void ipoctal_irq_tx(struct ipoctal_channel *channel)
@@ -208,15 +208,11 @@
static void ipoctal_irq_channel(struct ipoctal_channel *channel)
{
u8 isr, sr;
- struct tty_struct *tty;
/* If there is no client, skip the check */
if (!atomic_read(&channel->open))
return;
- tty = tty_port_tty_get(&channel->tty_port);
- if (!tty)
- return;
/* The HW is organized in pair of channels. See which register we need
* to read from */
isr = ioread8(&channel->block_regs->r.isr);
@@ -235,14 +231,13 @@
/* RX data */
if ((isr & channel->isr_rx_rdy_mask) && (sr & SR_RX_READY))
- ipoctal_irq_rx(channel, tty, sr);
+ ipoctal_irq_rx(channel, sr);
/* TX of each character */
if ((isr & channel->isr_tx_rdy_mask) && (sr & SR_TX_READY))
ipoctal_irq_tx(channel);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&channel->tty_port);
}
static irqreturn_t ipoctal_irq_handler(void *arg)
diff --git a/drivers/isdn/Kconfig b/drivers/isdn/Kconfig
index 86cd75a..ef661ac 100644
--- a/drivers/isdn/Kconfig
+++ b/drivers/isdn/Kconfig
@@ -22,6 +22,7 @@
menuconfig ISDN_I4L
tristate "Old ISDN4Linux (deprecated)"
+ depends on TTY
---help---
This driver allows you to use an ISDN adapter for networking
connections and as dialin/out device. The isdn-tty's have a built
diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig
index 15c3ffd..f046865 100644
--- a/drivers/isdn/capi/Kconfig
+++ b/drivers/isdn/capi/Kconfig
@@ -18,6 +18,7 @@
config ISDN_CAPI_MIDDLEWARE
bool "CAPI2.0 Middleware support"
+ depends on TTY
help
This option will enhance the capabilities of the /dev/capi20
interface. It will provide a means of moving a data connection,
diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig
index b18a92c..dde5e09 100644
--- a/drivers/isdn/gigaset/Kconfig
+++ b/drivers/isdn/gigaset/Kconfig
@@ -1,5 +1,6 @@
menuconfig ISDN_DRV_GIGASET
tristate "Siemens Gigaset support"
+ depends on TTY
select CRC_CCITT
select BITREVERSE
help
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 67abf3f..0fbf4f2 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -164,7 +164,7 @@
if (cs->port.count == 1) {
tty_port_tty_set(&cs->port, tty);
- tty->low_latency = 1;
+ cs->port.low_latency = 1;
}
mutex_unlock(&cs->mutex);
@@ -562,16 +562,8 @@
void gigaset_if_receive(struct cardstate *cs,
unsigned char *buffer, size_t len)
{
- struct tty_struct *tty = tty_port_tty_get(&cs->port);
-
- if (tty == NULL) {
- gig_dbg(DEBUG_IF, "receive on closed device");
- return;
- }
-
- tty_insert_flip_string(tty, buffer, len);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&cs->port, buffer, len);
+ tty_flip_buffer_push(&cs->port);
}
EXPORT_SYMBOL_GPL(gigaset_if_receive);
diff --git a/drivers/isdn/hardware/mISDN/Kconfig b/drivers/isdn/hardware/mISDN/Kconfig
index eadc1cd..b8611e3 100644
--- a/drivers/isdn/hardware/mISDN/Kconfig
+++ b/drivers/isdn/hardware/mISDN/Kconfig
@@ -76,6 +76,7 @@
tristate "Support for NETJet cards"
depends on MISDN
depends on PCI
+ depends on TTY
select MISDN_IPAC
select ISDN_HDLC
select ISDN_I4L
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index e2a945e..b87d9e5 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -876,7 +876,7 @@
* of the mapping (di,ch)<->minor, happen during the sleep? --he
*/
int
-isdn_readbchan_tty(int di, int channel, struct tty_struct *tty, int cisco_hack)
+isdn_readbchan_tty(int di, int channel, struct tty_port *port, int cisco_hack)
{
int count;
int count_pull;
@@ -891,7 +891,7 @@
if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
return 0;
- len = tty_buffer_request_room(tty, dev->drv[di]->rcvcount[channel]);
+ len = tty_buffer_request_room(port, dev->drv[di]->rcvcount[channel]);
if (len == 0)
return len;
@@ -912,7 +912,7 @@
while ((count_pull < skb->len) && (len > 0)) {
/* push every character but the last to the tty buffer directly */
if (count_put)
- tty_insert_flip_char(tty, last, TTY_NORMAL);
+ tty_insert_flip_char(port, last, TTY_NORMAL);
len--;
if (dev->drv[di]->DLEflag & DLEmask) {
last = DLE;
@@ -940,7 +940,7 @@
}
count_put = count_pull;
if (count_put > 1)
- tty_insert_flip_string(tty, skb->data, count_put - 1);
+ tty_insert_flip_string(port, skb->data, count_put - 1);
last = skb->data[count_put - 1];
len -= count_put;
#ifdef CONFIG_ISDN_AUDIO
@@ -952,16 +952,16 @@
* Now we can dequeue it.
*/
if (cisco_hack)
- tty_insert_flip_char(tty, last, 0xFF);
+ tty_insert_flip_char(port, last, 0xFF);
else
- tty_insert_flip_char(tty, last, TTY_NORMAL);
+ tty_insert_flip_char(port, last, TTY_NORMAL);
#ifdef CONFIG_ISDN_AUDIO
ISDN_AUDIO_SKB_LOCK(skb) = 0;
#endif
skb = skb_dequeue(&dev->drv[di]->rpqueue[channel]);
dev_kfree_skb(skb);
} else {
- tty_insert_flip_char(tty, last, TTY_NORMAL);
+ tty_insert_flip_char(port, last, TTY_NORMAL);
/* Not yet emptied this buff, so it
* must stay in the queue, for further calls
* but we pull off the data we got until now.
diff --git a/drivers/isdn/i4l/isdn_common.h b/drivers/isdn/i4l/isdn_common.h
index 9a471f6..2260ef0 100644
--- a/drivers/isdn/i4l/isdn_common.h
+++ b/drivers/isdn/i4l/isdn_common.h
@@ -37,7 +37,7 @@
extern void isdn_unexclusive_channel(int di, int ch);
extern int isdn_getnum(char **);
extern int isdn_readbchan(int, int, u_char *, u_char *, int, wait_queue_head_t *);
-extern int isdn_readbchan_tty(int, int, struct tty_struct *, int);
+extern int isdn_readbchan_tty(int, int, struct tty_port *, int);
extern int isdn_get_free_channel(int, int, int, int, int, char *);
extern int isdn_writebuf_skb_stub(int, int, int, struct sk_buff *);
extern int register_isdn(isdn_if *i);
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index e09dc8a..d8a7d83 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -60,18 +60,14 @@
static int
isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
{
+ struct tty_port *port = &info->port;
int c;
int len;
- struct tty_struct *tty;
char last;
if (!info->online)
return 0;
- tty = info->port.tty;
- if (!tty)
- return 0;
-
if (!(info->mcr & UART_MCR_RTS))
return 0;
@@ -81,7 +77,7 @@
#endif
;
- c = tty_buffer_request_room(tty, len);
+ c = tty_buffer_request_room(port, len);
if (c < len)
return 0;
@@ -91,25 +87,25 @@
unsigned char *dp = skb->data;
while (--l) {
if (*dp == DLE)
- tty_insert_flip_char(tty, DLE, 0);
- tty_insert_flip_char(tty, *dp++, 0);
+ tty_insert_flip_char(port, DLE, 0);
+ tty_insert_flip_char(port, *dp++, 0);
}
if (*dp == DLE)
- tty_insert_flip_char(tty, DLE, 0);
+ tty_insert_flip_char(port, DLE, 0);
last = *dp;
} else {
#endif
if (len > 1)
- tty_insert_flip_string(tty, skb->data, len - 1);
+ tty_insert_flip_string(port, skb->data, len - 1);
last = skb->data[len - 1];
#ifdef CONFIG_ISDN_AUDIO
}
#endif
if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
- tty_insert_flip_char(tty, last, 0xFF);
+ tty_insert_flip_char(port, last, 0xFF);
else
- tty_insert_flip_char(tty, last, TTY_NORMAL);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_char(port, last, TTY_NORMAL);
+ tty_flip_buffer_push(port);
kfree_skb(skb);
return 1;
@@ -126,7 +122,6 @@
int midx;
int i;
int r;
- struct tty_struct *tty;
modem_info *info;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
@@ -144,20 +139,21 @@
if ((info->vonline & 1) && (info->emu.vpar[1]))
isdn_audio_eval_silence(info);
#endif
- tty = info->port.tty;
- if (tty) {
- if (info->mcr & UART_MCR_RTS) {
- /* CISCO AsyncPPP Hack */
- if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
- r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
- else
- r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
- if (r)
- tty_flip_buffer_push(tty);
- } else
- r = 1;
+ if (info->mcr & UART_MCR_RTS) {
+ /* CISCO AsyncPPP Hack */
+ if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
+ r = isdn_readbchan_tty(info->isdn_driver,
+ info->isdn_channel,
+ &info->port, 0);
+ else
+ r = isdn_readbchan_tty(info->isdn_driver,
+ info->isdn_channel,
+ &info->port, 1);
+ if (r)
+ tty_flip_buffer_push(&info->port);
} else
r = 1;
+
if (r) {
info->rcvsched = 0;
resched = 1;
@@ -2229,7 +2225,7 @@
void
isdn_tty_at_cout(char *msg, modem_info *info)
{
- struct tty_struct *tty;
+ struct tty_port *port = &info->port;
atemu *m = &info->emu;
char *p;
char c;
@@ -2246,15 +2242,14 @@
l = strlen(msg);
spin_lock_irqsave(&info->readlock, flags);
- tty = info->port.tty;
- if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
+ if (port->flags & ASYNC_CLOSING) {
spin_unlock_irqrestore(&info->readlock, flags);
return;
}
/* use queue instead of direct, if online and */
/* data is in queue or buffer is full */
- if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
+ if (info->online && ((tty_buffer_request_room(port, l) < l) ||
!skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
skb = alloc_skb(l, GFP_ATOMIC);
if (!skb) {
@@ -2285,7 +2280,7 @@
if (skb) {
*sp++ = c;
} else {
- if (tty_insert_flip_char(tty, c, TTY_NORMAL) == 0)
+ if (tty_insert_flip_char(port, c, TTY_NORMAL) == 0)
break;
}
}
@@ -2299,7 +2294,7 @@
} else {
spin_unlock_irqrestore(&info->readlock, flags);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
}
diff --git a/drivers/lguest/Kconfig b/drivers/lguest/Kconfig
index 34ae49d..f9c4314 100644
--- a/drivers/lguest/Kconfig
+++ b/drivers/lguest/Kconfig
@@ -1,6 +1,6 @@
config LGUEST
tristate "Linux hypervisor example code"
- depends on X86_32 && EXPERIMENTAL && EVENTFD
+ depends on X86_32 && EXPERIMENTAL && EVENTFD && TTY
select HVC_DRIVER
---help---
This is a very simple module which allows you to run
diff --git a/drivers/media/radio/wl128x/Kconfig b/drivers/media/radio/wl128x/Kconfig
index ea1e6545..f359be7 100644
--- a/drivers/media/radio/wl128x/Kconfig
+++ b/drivers/media/radio/wl128x/Kconfig
@@ -4,7 +4,7 @@
menu "Texas Instruments WL128x FM driver (ST based)"
config RADIO_WL128X
tristate "Texas Instruments WL128x FM Radio"
- depends on VIDEO_V4L2 && RFKILL && GPIOLIB
+ depends on VIDEO_V4L2 && RFKILL && GPIOLIB && TTY
select TI_ST if NET
help
Choose Y here if you have this FM radio chip.
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index b151b7c1..4b2bb93 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -127,7 +127,7 @@
config INTEL_MID_PTI
tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"
- depends on PCI
+ depends on PCI && TTY
default n
help
The PTI (Parallel Trace Interface) driver directs
diff --git a/drivers/misc/ti-st/Kconfig b/drivers/misc/ti-st/Kconfig
index abb5de1..f34dcc5 100644
--- a/drivers/misc/ti-st/Kconfig
+++ b/drivers/misc/ti-st/Kconfig
@@ -5,7 +5,7 @@
menu "Texas Instruments shared transport line discipline"
config TI_ST
tristate "Shared transport core driver"
- depends on NET && GPIOLIB
+ depends on NET && GPIOLIB && TTY
select FW_LOADER
help
This enables the shared transport core driver for TI
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
index 3b1f783..5562308 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -52,6 +52,7 @@
config SDIO_UART
tristate "SDIO UART/GPS class support"
+ depends on TTY
help
SDIO function driver for SDIO cards that implements the UART
class, as well as the GPS class which appears like a UART.
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index bd57a11..c931dfe6 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -381,7 +381,6 @@
static void sdio_uart_receive_chars(struct sdio_uart_port *port,
unsigned int *status)
{
- struct tty_struct *tty = tty_port_tty_get(&port->port);
unsigned int ch, flag;
int max_count = 256;
@@ -418,23 +417,19 @@
}
if ((*status & port->ignore_status_mask & ~UART_LSR_OE) == 0)
- if (tty)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(&port->port, ch, flag);
/*
* Overrun is special. Since it's reported immediately,
* it doesn't affect the current character.
*/
if (*status & ~port->ignore_status_mask & UART_LSR_OE)
- if (tty)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
*status = sdio_in(port, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+
+ tty_flip_buffer_push(&port->port);
}
static void sdio_uart_transmit_chars(struct sdio_uart_port *port)
diff --git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig
index abf4d7a..60c2142 100644
--- a/drivers/net/caif/Kconfig
+++ b/drivers/net/caif/Kconfig
@@ -6,7 +6,7 @@
config CAIF_TTY
tristate "CAIF TTY transport driver"
- depends on CAIF
+ depends on CAIF && TTY
default n
---help---
The CAIF TTY transport driver is a Line Discipline (ldisc)
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 5de74e7..666891a 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -91,7 +91,7 @@
ser->tty->hw_stopped << 4 |
ser->tty->flow_stopped << 3 |
ser->tty->packet << 2 |
- ser->tty->low_latency << 1 |
+ ser->tty->port->low_latency << 1 |
ser->tty->warned;
}
static inline void debugfs_init(struct ser_device *ser, struct tty_struct *tty)
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig
index b56bd9e..72df3a3 100644
--- a/drivers/net/can/Kconfig
+++ b/drivers/net/can/Kconfig
@@ -13,7 +13,7 @@
config CAN_SLCAN
tristate "Serial / USB serial CAN Adaptors (slcan)"
- depends on CAN
+ depends on CAN && TTY
---help---
CAN driver for several 'low cost' CAN interfaces that are attached
via serial lines or via USB-to-serial adapters using the LAWICEL
diff --git a/drivers/net/hamradio/Kconfig b/drivers/net/hamradio/Kconfig
index 95dbcfd..bf5e596 100644
--- a/drivers/net/hamradio/Kconfig
+++ b/drivers/net/hamradio/Kconfig
@@ -1,6 +1,6 @@
config MKISS
tristate "Serial port KISS driver"
- depends on AX25
+ depends on AX25 && TTY
select CRC16
---help---
KISS is a protocol used for the exchange of data between a computer
@@ -18,7 +18,7 @@
config 6PACK
tristate "Serial port 6PACK driver"
- depends on AX25
+ depends on AX25 && TTY
---help---
6pack is a transmission protocol for the data exchange between your
PC and your TNC (the Terminal Node Controller acts as a kind of
diff --git a/drivers/net/irda/Kconfig b/drivers/net/irda/Kconfig
index 59520540..e1454cd 100644
--- a/drivers/net/irda/Kconfig
+++ b/drivers/net/irda/Kconfig
@@ -5,7 +5,7 @@
config IRTTY_SIR
tristate "IrTTY (uses Linux serial driver)"
- depends on IRDA
+ depends on IRDA && TTY
help
Say Y here if you want to build support for the IrTTY line
discipline. To compile it as a module, choose M here: the module
diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c
index 6e4d4b6..a412671 100644
--- a/drivers/net/irda/irtty-sir.c
+++ b/drivers/net/irda/irtty-sir.c
@@ -210,7 +210,7 @@
* been received, which can now be decapsulated and delivered for
* further processing
*
- * calling context depends on underlying driver and tty->low_latency!
+ * calling context depends on underlying driver and tty->port->low_latency!
* for example (low_latency: 1 / 0):
* serial.c: uart-interrupt / softint
* usbserial: urb-complete-interrupt / softint
diff --git a/drivers/net/ppp/Kconfig b/drivers/net/ppp/Kconfig
index 872df3e..3d9ef4f 100644
--- a/drivers/net/ppp/Kconfig
+++ b/drivers/net/ppp/Kconfig
@@ -147,6 +147,7 @@
Support for PPP-over-L2TP socket family. L2TP is a protocol
used by ISPs and enterprises to tunnel PPP traffic over UDP
tunnels. L2TP is replacing PPTP for VPN uses.
+if TTY
config PPP_ASYNC
tristate "PPP support for async serial ports"
@@ -172,4 +173,6 @@
To compile this driver as a module, choose M here.
+endif # TTY
+
endif # PPP
diff --git a/drivers/net/slip/Kconfig b/drivers/net/slip/Kconfig
index 211b160..48e6871 100644
--- a/drivers/net/slip/Kconfig
+++ b/drivers/net/slip/Kconfig
@@ -4,6 +4,7 @@
config SLIP
tristate "SLIP (serial line) support"
+ depends on TTY
---help---
Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
connect to your Internet service provider or to connect to some
diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index ef97621..bd33153 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -445,7 +445,7 @@
config USB_HSO
tristate "Option USB High Speed Mobile Devices"
- depends on USB && RFKILL
+ depends on USB && RFKILL && TTY
default n
help
Choose this option if you have an Option HSDPA/HSUPA card.
@@ -493,7 +493,7 @@
config USB_VL600
tristate "LG VL600 modem dongle"
- depends on USB_NET_CDCETHER
+ depends on USB_NET_CDCETHER && TTY
select USB_ACM
help
Select this if you want to use an LG Electronics 4G/LTE usb modem
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cd8ccb2..f902a14 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2035,25 +2035,23 @@
tty = tty_port_tty_get(&serial->port);
/* Push data to tty */
- if (tty) {
- write_length_remaining = urb->actual_length -
- serial->curr_rx_urb_offset;
- D1("data to push to tty");
- while (write_length_remaining) {
- if (test_bit(TTY_THROTTLED, &tty->flags)) {
- tty_kref_put(tty);
- return -1;
- }
- curr_write_len = tty_insert_flip_string
- (tty, urb->transfer_buffer +
- serial->curr_rx_urb_offset,
- write_length_remaining);
- serial->curr_rx_urb_offset += curr_write_len;
- write_length_remaining -= curr_write_len;
- tty_flip_buffer_push(tty);
+ write_length_remaining = urb->actual_length -
+ serial->curr_rx_urb_offset;
+ D1("data to push to tty");
+ while (write_length_remaining) {
+ if (tty && test_bit(TTY_THROTTLED, &tty->flags)) {
+ tty_kref_put(tty);
+ return -1;
}
- tty_kref_put(tty);
+ curr_write_len = tty_insert_flip_string(&serial->port,
+ urb->transfer_buffer + serial->curr_rx_urb_offset,
+ write_length_remaining);
+ serial->curr_rx_urb_offset += curr_write_len;
+ write_length_remaining -= curr_write_len;
+ tty_flip_buffer_push(&serial->port);
}
+ tty_kref_put(tty);
+
if (write_length_remaining == 0) {
serial->curr_rx_urb_offset = 0;
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index d58431e9..61eb899 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -429,7 +429,7 @@
config X25_ASY
tristate "X.25 async driver (EXPERIMENTAL)"
- depends on LAPB && X25
+ depends on LAPB && X25 && TTY
---help---
Send and receive X.25 frames over regular asynchronous serial
lines such as telephone lines equipped with ordinary modems.
diff --git a/drivers/pps/clients/Kconfig b/drivers/pps/clients/Kconfig
index 445197d..6efd9b6 100644
--- a/drivers/pps/clients/Kconfig
+++ b/drivers/pps/clients/Kconfig
@@ -17,7 +17,7 @@
config PPS_CLIENT_LDISC
tristate "PPS line discipline"
- depends on PPS
+ depends on PPS && TTY
help
If you say yes here you get support for a PPS source connected
with the CD (Carrier Detect) pin of your serial port.
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index 2c9a776..71bf959 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -11,7 +11,7 @@
config TN3270_TTY
def_tristate y
prompt "Support for tty input/output on 3270 terminals"
- depends on TN3270
+ depends on TN3270 && TTY
help
Include support for using an IBM 3270 terminal as a Linux tty.
@@ -33,7 +33,7 @@
config TN3215
def_bool y
prompt "Support for 3215 line mode terminal"
- depends on CCW
+ depends on CCW && TTY
help
Include support for IBM 3215 line-mode terminals.
@@ -51,7 +51,7 @@
config SCLP_TTY
def_bool y
prompt "Support for SCLP line mode terminal"
- depends on S390
+ depends on S390 && TTY
help
Include support for IBM SCLP line-mode terminals.
@@ -66,7 +66,7 @@
config SCLP_VT220_TTY
def_bool y
prompt "Support for SCLP VT220-compatible terminal"
- depends on S390
+ depends on S390 && TTY
help
Include support for an IBM SCLP VT220-compatible terminal.
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 33b7141..7b00fa6 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -412,8 +412,9 @@
break;
case CTRLCHAR_CTRL:
- tty_insert_flip_char(tty, cchar, TTY_NORMAL);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_char(&raw->port, cchar,
+ TTY_NORMAL);
+ tty_flip_buffer_push(&raw->port);
break;
case CTRLCHAR_NONE:
@@ -425,8 +426,9 @@
count++;
} else
count -= 2;
- tty_insert_flip_string(tty, raw->inbuf, count);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&raw->port, raw->inbuf,
+ count);
+ tty_flip_buffer_push(&raw->port);
break;
}
} else if (req->type == RAW3215_WRITE) {
@@ -970,7 +972,7 @@
tty_port_tty_set(&raw->port, tty);
- tty->low_latency = 0; /* don't use bottom half for pushing chars */
+ raw->port.low_latency = 0; /* don't use bottom half for pushing chars */
/*
* Start up 3215 device
*/
diff --git a/drivers/s390/char/keyboard.h b/drivers/s390/char/keyboard.h
index d0ae2be..a31f339 100644
--- a/drivers/s390/char/keyboard.h
+++ b/drivers/s390/char/keyboard.h
@@ -43,22 +43,14 @@
static inline void
kbd_put_queue(struct tty_port *port, int ch)
{
- struct tty_struct *tty = tty_port_tty_get(port);
- if (!tty)
- return;
- tty_insert_flip_char(tty, ch, 0);
- tty_schedule_flip(tty);
- tty_kref_put(tty);
+ tty_insert_flip_char(port, ch, 0);
+ tty_schedule_flip(port);
}
static inline void
kbd_puts_queue(struct tty_port *port, char *cp)
{
- struct tty_struct *tty = tty_port_tty_get(port);
- if (!tty)
- return;
while (*cp)
- tty_insert_flip_char(tty, *cp++, 0);
- tty_schedule_flip(tty);
- tty_kref_put(tty);
+ tty_insert_flip_char(port, *cp++, 0);
+ tty_schedule_flip(port);
}
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 877fbc3..14b4cb8 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -65,7 +65,7 @@
{
tty_port_tty_set(&sclp_port, tty);
tty->driver_data = NULL;
- tty->low_latency = 0;
+ sclp_port.low_latency = 0;
return 0;
}
@@ -342,8 +342,8 @@
case CTRLCHAR_SYSRQ:
break;
case CTRLCHAR_CTRL:
- tty_insert_flip_char(tty, cchar, TTY_NORMAL);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_char(&sclp_port, cchar, TTY_NORMAL);
+ tty_flip_buffer_push(&sclp_port);
break;
case CTRLCHAR_NONE:
/* send (normal) input to line discipline */
@@ -351,11 +351,11 @@
(strncmp((const char *) buf + count - 2, "^n", 2) &&
strncmp((const char *) buf + count - 2, "\252n", 2))) {
/* add the auto \n */
- tty_insert_flip_string(tty, buf, count);
- tty_insert_flip_char(tty, '\n', TTY_NORMAL);
+ tty_insert_flip_string(&sclp_port, buf, count);
+ tty_insert_flip_char(&sclp_port, '\n', TTY_NORMAL);
} else
- tty_insert_flip_string(tty, buf, count - 2);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&sclp_port, buf, count - 2);
+ tty_flip_buffer_push(&sclp_port);
break;
}
tty_kref_put(tty);
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index effcc87..6c92f62 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -461,14 +461,9 @@
static void
sclp_vt220_receiver_fn(struct evbuf_header *evbuf)
{
- struct tty_struct *tty = tty_port_tty_get(&sclp_vt220_port);
char *buffer;
unsigned int count;
- /* Ignore input if device is not open */
- if (tty == NULL)
- return;
-
buffer = (char *) ((addr_t) evbuf + sizeof(struct evbuf_header));
count = evbuf->length - sizeof(struct evbuf_header);
@@ -480,11 +475,10 @@
/* Send input to line discipline */
buffer++;
count--;
- tty_insert_flip_string(tty, buffer, count);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&sclp_vt220_port, buffer, count);
+ tty_flip_buffer_push(&sclp_vt220_port);
break;
}
- tty_kref_put(tty);
}
/*
@@ -495,7 +489,7 @@
{
if (tty->count == 1) {
tty_port_tty_set(&sclp_vt220_port, tty);
- tty->low_latency = 0;
+ sclp_vt220_port.low_latency = 0;
if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
tty->winsize.ws_row = 24;
tty->winsize.ws_col = 80;
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 43ea059..3860e79 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -860,7 +860,7 @@
tty->driver_data = tp;
tty->winsize.ws_row = tp->view.rows - 2;
tty->winsize.ws_col = tp->view.cols;
- tty->low_latency = 0;
+ tp->port.low_latency = 0;
/* why to reassign? */
tty_port_tty_set(&tp->port, tty);
tp->inattr = TF_INPUT;
@@ -893,7 +893,7 @@
}
tty_port_tty_set(&tp->port, tty);
- tty->low_latency = 0;
+ tp->port.low_latency = 0;
tty->winsize.ws_row = tp->view.rows - 2;
tty->winsize.ws_col = tp->view.cols;
diff --git a/drivers/staging/ccg/Kconfig b/drivers/staging/ccg/Kconfig
index 8997a8c..7ed5bc6 100644
--- a/drivers/staging/ccg/Kconfig
+++ b/drivers/staging/ccg/Kconfig
@@ -2,7 +2,7 @@
config USB_G_CCG
tristate "Configurable Composite Gadget (STAGING)"
- depends on STAGING && BLOCK && NET && !USB_ZERO && !USB_ZERO_HNPTEST && !USB_AUDIO && !GADGET_UAC1 && !USB_ETH && !USB_ETH_RNDIS && !USB_ETH_EEM && !USB_G_NCM && !USB_GADGETFS && !USB_FUNCTIONFS && !USB_FUNCTIONFS_ETH && !USB_FUNCTIONFS_RNDIS && !USB_FUNCTIONFS_GENERIC && !USB_FILE_STORAGE && !USB_FILE_STORAGE_TEST && !USB_MASS_STORAGE && !USB_G_SERIAL && !USB_MIDI_GADGET && !USB_G_PRINTER && !USB_CDC_COMPOSITE && !USB_G_NOKIA && !USB_G_ACM_MS && !USB_G_MULTI && !USB_G_MULTI_RNDIS && !USB_G_MULTI_CDC && !USB_G_HID && !USB_G_DBGP && !USB_G_WEBCAM
+ depends on STAGING && BLOCK && NET && !USB_ZERO && !USB_ZERO_HNPTEST && !USB_AUDIO && !GADGET_UAC1 && !USB_ETH && !USB_ETH_RNDIS && !USB_ETH_EEM && !USB_G_NCM && !USB_GADGETFS && !USB_FUNCTIONFS && !USB_FUNCTIONFS_ETH && !USB_FUNCTIONFS_RNDIS && !USB_FUNCTIONFS_GENERIC && !USB_FILE_STORAGE && !USB_FILE_STORAGE_TEST && !USB_MASS_STORAGE && !USB_G_SERIAL && !USB_MIDI_GADGET && !USB_G_PRINTER && !USB_CDC_COMPOSITE && !USB_G_NOKIA && !USB_G_ACM_MS && !USB_G_MULTI && !USB_G_MULTI_RNDIS && !USB_G_MULTI_CDC && !USB_G_HID && !USB_G_DBGP && !USB_G_WEBCAM && TTY
help
The Configurable Composite Gadget supports multiple USB
functions: acm, mass storage, rndis and FunctionFS.
diff --git a/drivers/staging/ccg/u_serial.c b/drivers/staging/ccg/u_serial.c
index 373c406..b10947a 100644
--- a/drivers/staging/ccg/u_serial.c
+++ b/drivers/staging/ccg/u_serial.c
@@ -491,12 +491,8 @@
req = list_first_entry(queue, struct usb_request, list);
- /* discard data if tty was closed */
- if (!tty)
- goto recycle;
-
/* leave data queued if tty was rx throttled */
- if (test_bit(TTY_THROTTLED, &tty->flags))
+ if (tty && test_bit(TTY_THROTTLED, &tty->flags))
break;
switch (req->status) {
@@ -529,7 +525,7 @@
size -= n;
}
- count = tty_insert_flip_string(tty, packet, size);
+ count = tty_insert_flip_string(&port->port, packet, size);
if (count)
do_push = true;
if (count != size) {
@@ -542,7 +538,6 @@
}
port->n_read = 0;
}
-recycle:
list_move(&req->list, &port->read_pool);
port->read_started--;
}
@@ -550,8 +545,8 @@
/* Push from tty to ldisc; without low_latency set this is handled by
* a workqueue, so we won't get callbacks and can hold port_lock
*/
- if (tty && do_push)
- tty_flip_buffer_push(tty);
+ if (do_push)
+ tty_flip_buffer_push(&port->port);
/* We want our data queue to become empty ASAP, keeping data
diff --git a/drivers/staging/dgrp/Kconfig b/drivers/staging/dgrp/Kconfig
index 39f4bb6..e4c4155 100644
--- a/drivers/staging/dgrp/Kconfig
+++ b/drivers/staging/dgrp/Kconfig
@@ -1,7 +1,7 @@
config DGRP
tristate "Digi Realport driver"
default n
- depends on SYSFS
+ depends on SYSFS && TTY
---help---
Support for Digi Realport devices. These devices allow you to
access remote serial ports as if they are local tty devices. This
diff --git a/drivers/staging/dgrp/dgrp_net_ops.c b/drivers/staging/dgrp/dgrp_net_ops.c
index 2d1bbfd5..4c7abfa 100644
--- a/drivers/staging/dgrp/dgrp_net_ops.c
+++ b/drivers/staging/dgrp/dgrp_net_ops.c
@@ -211,7 +211,7 @@
data_len = (ch->ch_rin - ch->ch_rout) & RBUF_MASK;
/* len is the amount of data we are going to transfer here */
- len = tty_buffer_request_room(tty, data_len);
+ len = tty_buffer_request_room(&ch->port, data_len);
/* Check DPA flow control */
if ((nd->nd_dpa_debug) &&
@@ -232,9 +232,9 @@
(nd->nd_dpa_port == PORT_NUM(MINOR(tty_devnum(tty)))))
dgrp_dpa_data(nd, 1, myflipbuf, len);
- tty_insert_flip_string_flags(tty, myflipbuf,
+ tty_insert_flip_string_flags(&ch->port, myflipbuf,
myflipflagbuf, len);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&ch->port);
ch->ch_rxcount += len;
}
@@ -2956,9 +2956,9 @@
I_BRKINT(ch->ch_tun.un_tty) &&
!(I_IGNBRK(ch->ch_tun.un_tty))) {
- tty_buffer_request_room(ch->ch_tun.un_tty, 1);
- tty_insert_flip_char(ch->ch_tun.un_tty, 0, TTY_BREAK);
- tty_flip_buffer_push(ch->ch_tun.un_tty);
+ tty_buffer_request_room(&ch->port, 1);
+ tty_insert_flip_char(&ch->port, 0, TTY_BREAK);
+ tty_flip_buffer_push(&ch->port);
}
diff --git a/drivers/staging/fwserial/Kconfig b/drivers/staging/fwserial/Kconfig
index b2f8331e..a0812d9 100644
--- a/drivers/staging/fwserial/Kconfig
+++ b/drivers/staging/fwserial/Kconfig
@@ -1,6 +1,6 @@
config FIREWIRE_SERIAL
tristate "TTY over Firewire"
- depends on FIREWIRE
+ depends on FIREWIRE && TTY
help
This enables TTY over IEEE 1394, providing high-speed serial
connectivity to cabled peers. This driver implements a
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index d03a7f5..e5e8f2f 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -489,16 +489,11 @@
static void fwtty_emit_breaks(struct work_struct *work)
{
struct fwtty_port *port = to_port(to_delayed_work(work), emit_breaks);
- struct tty_struct *tty;
static const char buf[16];
unsigned long now = jiffies;
unsigned long elapsed = now - port->break_last;
int n, t, c, brk = 0;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
/* generate breaks at the line rate (but at least 1) */
n = (elapsed * port->cps) / HZ + 1;
port->break_last = now;
@@ -507,15 +502,14 @@
while (n) {
t = min(n, 16);
- c = tty_insert_flip_string_fixed_flag(tty, buf, TTY_BREAK, t);
+ c = tty_insert_flip_string_fixed_flag(&port->port, buf,
+ TTY_BREAK, t);
n -= c;
brk += c;
if (c < t)
break;
}
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
if (port->mstatus & (UART_LSR_BI << 24))
schedule_delayed_work(&port->emit_breaks, FREQ_BREAKS);
@@ -529,13 +523,9 @@
struct buffered_rx *buf, *next;
int n, c = 0;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
spin_lock_bh(&port->lock);
list_for_each_entry_safe(buf, next, &port->buf_list, list) {
- n = tty_insert_flip_string_fixed_flag(tty, buf->data,
+ n = tty_insert_flip_string_fixed_flag(&port->port, buf->data,
TTY_NORMAL, buf->n);
c += n;
port->buffered -= n;
@@ -544,7 +534,11 @@
memmove(buf->data, buf->data + n, buf->n - n);
buf->n -= n;
}
- __fwtty_throttle(port, tty);
+ tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ __fwtty_throttle(port, tty);
+ tty_kref_put(tty);
+ }
break;
} else {
list_del(&buf->list);
@@ -552,13 +546,11 @@
}
}
if (c > 0)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
if (list_empty(&port->buf_list))
clear_bit(BUFFERING_RX, &port->flags);
spin_unlock_bh(&port->lock);
-
- tty_kref_put(tty);
}
static int fwtty_buffer_rx(struct fwtty_port *port, unsigned char *d, size_t n)
@@ -593,10 +585,6 @@
unsigned lsr;
int err = 0;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return -ENOENT;
-
fwtty_dbg(port, "%d", n);
profile_size_distrib(port->stats.reads, n);
@@ -616,7 +604,7 @@
lsr &= port->status_mask;
if (lsr & ~port->ignore_mask & UART_LSR_OE) {
- if (!tty_insert_flip_char(tty, 0, TTY_OVERRUN)) {
+ if (!tty_insert_flip_char(&port->port, 0, TTY_OVERRUN)) {
err = -EIO;
goto out;
}
@@ -630,18 +618,23 @@
}
if (!test_bit(BUFFERING_RX, &port->flags)) {
- c = tty_insert_flip_string_fixed_flag(tty, data, TTY_NORMAL, n);
+ c = tty_insert_flip_string_fixed_flag(&port->port, data,
+ TTY_NORMAL, n);
if (c > 0)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
n -= c;
if (n) {
/* start buffering and throttling */
n -= fwtty_buffer_rx(port, &data[c], n);
- spin_lock_bh(&port->lock);
- __fwtty_throttle(port, tty);
- spin_unlock_bh(&port->lock);
+ tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ spin_lock_bh(&port->lock);
+ __fwtty_throttle(port, tty);
+ spin_unlock_bh(&port->lock);
+ tty_kref_put(tty);
+ }
}
} else
n -= fwtty_buffer_rx(port, data, n);
@@ -652,8 +645,6 @@
}
out:
- tty_kref_put(tty);
-
port->icount.rx += len;
port->stats.lost += n;
return err;
diff --git a/drivers/staging/sb105x/Kconfig b/drivers/staging/sb105x/Kconfig
index 1facad6..245e784 100644
--- a/drivers/staging/sb105x/Kconfig
+++ b/drivers/staging/sb105x/Kconfig
@@ -1,8 +1,7 @@
config SB105X
tristate "SystemBase PCI Multiport UART"
select SERIAL_CORE
- depends on PCI
- depends on X86
+ depends on PCI && X86 && TTY && BROKEN
help
A driver for the SystemBase Multi-2/PCI serial card
diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c
index 1b3e995..b1bb1a6 100644
--- a/drivers/staging/serqt_usb2/serqt_usb2.c
+++ b/drivers/staging/serqt_usb2/serqt_usb2.c
@@ -255,12 +255,11 @@
wake_up_interruptible(&qt_port->wait);
}
-static void ProcessRxChar(struct tty_struct *tty, struct usb_serial_port *port,
- unsigned char data)
+static void ProcessRxChar(struct usb_serial_port *port, unsigned char data)
{
struct urb *urb = port->read_urb;
if (urb->actual_length)
- tty_insert_flip_char(tty, data, TTY_NORMAL);
+ tty_insert_flip_char(&port->port, data, TTY_NORMAL);
}
static void qt_write_bulk_callback(struct urb *urb)
@@ -291,8 +290,7 @@
/* FIXME */
}
-static void qt_status_change_check(struct tty_struct *tty,
- struct urb *urb,
+static void qt_status_change_check(struct urb *urb,
struct quatech_port *qt_port,
struct usb_serial_port *port)
{
@@ -335,8 +333,8 @@
case 0xff:
dev_dbg(&port->dev, "No status sequence.\n");
- ProcessRxChar(tty, port, data[i]);
- ProcessRxChar(tty, port, data[i + 1]);
+ ProcessRxChar(port, data[i]);
+ ProcessRxChar(port, data[i + 1]);
i += 2;
break;
@@ -345,11 +343,11 @@
continue;
}
- if (tty && urb->actual_length)
- tty_insert_flip_char(tty, data[i], TTY_NORMAL);
+ if (urb->actual_length)
+ tty_insert_flip_char(&port->port, data[i], TTY_NORMAL);
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
static void qt_read_bulk_callback(struct urb *urb)
@@ -358,7 +356,6 @@
struct usb_serial_port *port = urb->context;
struct usb_serial *serial = get_usb_serial(port, __func__);
struct quatech_port *qt_port = qt_get_port_private(port);
- struct tty_struct *tty;
int result;
if (urb->status) {
@@ -369,27 +366,23 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
dev_dbg(&port->dev,
"%s - port->RxHolding = %d\n", __func__, qt_port->RxHolding);
if (port_paranoia_check(port, __func__) != 0) {
qt_port->ReadBulkStopped = 1;
- goto exit;
+ return;
}
if (!serial)
- goto exit;
+ return;
if (qt_port->closePending == 1) {
/* Were closing , stop reading */
dev_dbg(&port->dev,
"%s - (qt_port->closepending == 1\n", __func__);
qt_port->ReadBulkStopped = 1;
- goto exit;
+ return;
}
/*
@@ -399,7 +392,7 @@
*/
if (qt_port->RxHolding == 1) {
qt_port->ReadBulkStopped = 1;
- goto exit;
+ return;
}
if (urb->status) {
@@ -408,11 +401,11 @@
dev_dbg(&port->dev,
"%s - nonzero read bulk status received: %d\n",
__func__, urb->status);
- goto exit;
+ return;
}
if (urb->actual_length)
- qt_status_change_check(tty, urb, qt_port, port);
+ qt_status_change_check(urb, qt_port, port);
/* Continue trying to always read */
usb_fill_bulk_urb(port->read_urb, serial->dev,
@@ -428,14 +421,12 @@
__func__, result);
else {
if (urb->actual_length) {
- tty_flip_buffer_push(tty);
- tty_schedule_flip(tty);
+ tty_flip_buffer_push(&port->port);
+ tty_schedule_flip(&port->port);
}
}
schedule_work(&port->work);
-exit:
- tty_kref_put(tty);
}
/*
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 0ecf22b..29dfc24 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -1,3 +1,14 @@
+config TTY
+ bool "Enable TTY" if EXPERT
+ default y
+ ---help---
+ Allows you to remove TTY support which can save space, and
+ blocks features that require TTY from inclusion in the kernel.
+ TTY is required for any text terminals or serial port
+ communication. Most users should leave this enabled.
+
+if TTY
+
config VT
bool "Virtual terminal" if EXPERT
depends on !S390 && !UML
@@ -388,3 +399,11 @@
If the number you specify is not a valid byte channel handle, then
there simply will be no early console output. This is true also
if you don't boot under a hypervisor at all.
+
+config GOLDFISH_TTY
+ tristate "Goldfish TTY Driver"
+ depends on GOLDFISH
+ help
+ Console and system TTY driver for the Goldfish virtual platform.
+
+endif # TTY
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 2953059..35649d35 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -1,4 +1,4 @@
-obj-y += tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o \
+obj-$(CONFIG_TTY) += tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o \
tty_buffer.o tty_port.o tty_mutex.o
obj-$(CONFIG_LEGACY_PTYS) += pty.o
obj-$(CONFIG_UNIX98_PTYS) += pty.o
@@ -27,5 +27,6 @@
obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o
obj-$(CONFIG_SYNCLINK) += synclink.o
obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
+obj-$(CONFIG_GOLDFISH_TTY) += goldfish.o
obj-y += ipwireless/
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 9d7d00c..4c7d701 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -251,7 +251,6 @@
{
int status;
int serdatr;
- struct tty_struct *tty = info->tport.tty;
unsigned char ch, flag;
struct async_icount *icount;
int oe = 0;
@@ -314,7 +313,7 @@
#endif
flag = TTY_BREAK;
if (info->tport.flags & ASYNC_SAK)
- do_SAK(tty);
+ do_SAK(info->tport.tty);
} else if (status & UART_LSR_PE)
flag = TTY_PARITY;
else if (status & UART_LSR_FE)
@@ -328,10 +327,10 @@
oe = 1;
}
}
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(&info->tport, ch, flag);
if (oe == 1)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_char(&info->tport, 0, TTY_OVERRUN);
+ tty_flip_buffer_push(&info->tport);
out:
return;
}
@@ -1099,7 +1098,7 @@
state->custom_divisor = new_serial.custom_divisor;
port->close_delay = new_serial.close_delay * HZ/100;
port->closing_wait = new_serial.closing_wait * HZ/100;
- tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
check_and_exit:
if (port->flags & ASYNC_INITIALIZED) {
@@ -1528,7 +1527,7 @@
if (serial_paranoia_check(info, tty->name, "rs_open"))
return -ENODEV;
- tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
retval = startup(tty, info);
if (retval) {
diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index 1cfcdbf1..a93a424 100644
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -95,18 +95,16 @@
/* if incoming data is ready, eat it */
if (bfin_read_DBGSTAT() & EMUDIF) {
- if (tty != NULL) {
- uint32_t emudat = bfin_read_emudat();
- if (inbound_len == 0) {
- pr_debug("incoming length: 0x%08x\n", emudat);
- inbound_len = emudat;
- } else {
- size_t num_chars = (4 <= inbound_len ? 4 : inbound_len);
- pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars);
- inbound_len -= num_chars;
- tty_insert_flip_string(tty, (unsigned char *)&emudat, num_chars);
- tty_flip_buffer_push(tty);
- }
+ uint32_t emudat = bfin_read_emudat();
+ if (inbound_len == 0) {
+ pr_debug("incoming length: 0x%08x\n", emudat);
+ inbound_len = emudat;
+ } else {
+ size_t num_chars = (4 <= inbound_len ? 4 : inbound_len);
+ pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars);
+ inbound_len -= num_chars;
+ tty_insert_flip_string(&port, (unsigned char *)&emudat, num_chars);
+ tty_flip_buffer_push(&port);
}
}
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index b09c8d1f..345bd0e 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -441,7 +441,7 @@
void __iomem *base_addr)
{
struct cyclades_port *info;
- struct tty_struct *tty;
+ struct tty_port *port;
int len, index = cinfo->bus_index;
u8 ivr, save_xir, channel, save_car, data, char_count;
@@ -452,22 +452,11 @@
save_xir = readb(base_addr + (CyRIR << index));
channel = save_xir & CyIRChannel;
info = &cinfo->ports[channel + chip * 4];
+ port = &info->port;
save_car = cyy_readb(info, CyCAR);
cyy_writeb(info, CyCAR, save_xir);
ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
- tty = tty_port_tty_get(&info->port);
- /* if there is nowhere to put the data, discard it */
- if (tty == NULL) {
- if (ivr == CyIVRRxEx) { /* exception */
- data = cyy_readb(info, CyRDSR);
- } else { /* normal character reception */
- char_count = cyy_readb(info, CyRDCR);
- while (char_count--)
- data = cyy_readb(info, CyRDSR);
- }
- goto end;
- }
/* there is an open port for this data */
if (ivr == CyIVRRxEx) { /* exception */
data = cyy_readb(info, CyRDSR);
@@ -484,40 +473,45 @@
if (data & info->ignore_status_mask) {
info->icount.rx++;
- tty_kref_put(tty);
return;
}
- if (tty_buffer_request_room(tty, 1)) {
+ if (tty_buffer_request_room(port, 1)) {
if (data & info->read_status_mask) {
if (data & CyBREAK) {
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(port,
cyy_readb(info, CyRDSR),
TTY_BREAK);
info->icount.rx++;
- if (info->port.flags & ASYNC_SAK)
- do_SAK(tty);
+ if (port->flags & ASYNC_SAK) {
+ struct tty_struct *tty =
+ tty_port_tty_get(port);
+ if (tty) {
+ do_SAK(tty);
+ tty_kref_put(tty);
+ }
+ }
} else if (data & CyFRAME) {
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(port,
cyy_readb(info, CyRDSR),
TTY_FRAME);
info->icount.rx++;
info->idle_stats.frame_errs++;
} else if (data & CyPARITY) {
/* Pieces of seven... */
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(port,
cyy_readb(info, CyRDSR),
TTY_PARITY);
info->icount.rx++;
info->idle_stats.parity_errs++;
} else if (data & CyOVERRUN) {
- tty_insert_flip_char(tty, 0,
+ tty_insert_flip_char(port, 0,
TTY_OVERRUN);
info->icount.rx++;
/* If the flip buffer itself is
overflowing, we still lose
the next incoming character.
*/
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(port,
cyy_readb(info, CyRDSR),
TTY_FRAME);
info->icount.rx++;
@@ -527,12 +521,12 @@
/* } else if(data & CyTIMEOUT) { */
/* } else if(data & CySPECHAR) { */
} else {
- tty_insert_flip_char(tty, 0,
+ tty_insert_flip_char(port, 0,
TTY_NORMAL);
info->icount.rx++;
}
} else {
- tty_insert_flip_char(tty, 0, TTY_NORMAL);
+ tty_insert_flip_char(port, 0, TTY_NORMAL);
info->icount.rx++;
}
} else {
@@ -552,10 +546,10 @@
info->mon.char_max = char_count;
info->mon.char_last = char_count;
#endif
- len = tty_buffer_request_room(tty, char_count);
+ len = tty_buffer_request_room(port, char_count);
while (len--) {
data = cyy_readb(info, CyRDSR);
- tty_insert_flip_char(tty, data, TTY_NORMAL);
+ tty_insert_flip_char(port, data, TTY_NORMAL);
info->idle_stats.recv_bytes++;
info->icount.rx++;
#ifdef CY_16Y_HACK
@@ -564,9 +558,8 @@
}
info->idle_stats.recv_idle = jiffies;
}
- tty_schedule_flip(tty);
- tty_kref_put(tty);
-end:
+ tty_schedule_flip(port);
+
/* end of service */
cyy_writeb(info, CyRIR, save_xir & 0x3f);
cyy_writeb(info, CyCAR, save_car);
@@ -924,10 +917,11 @@
return 0;
} /* cyz_issue_cmd */
-static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
+static void cyz_handle_rx(struct cyclades_port *info)
{
struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
struct cyclades_card *cinfo = info->card;
+ struct tty_port *port = &info->port;
unsigned int char_count;
int len;
#ifdef BLOCKMOVE
@@ -946,80 +940,77 @@
else
char_count = rx_put - rx_get + rx_bufsize;
- if (char_count) {
+ if (!char_count)
+ return;
+
#ifdef CY_ENABLE_MONITORING
- info->mon.int_count++;
- info->mon.char_count += char_count;
- if (char_count > info->mon.char_max)
- info->mon.char_max = char_count;
- info->mon.char_last = char_count;
+ info->mon.int_count++;
+ info->mon.char_count += char_count;
+ if (char_count > info->mon.char_max)
+ info->mon.char_max = char_count;
+ info->mon.char_last = char_count;
#endif
- if (tty == NULL) {
- /* flush received characters */
- new_rx_get = (new_rx_get + char_count) &
- (rx_bufsize - 1);
- info->rflush_count++;
- } else {
+
#ifdef BLOCKMOVE
- /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
- for performance, but because of buffer boundaries, there
- may be several steps to the operation */
- while (1) {
- len = tty_prepare_flip_string(tty, &buf,
- char_count);
- if (!len)
- break;
+ /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
+ for performance, but because of buffer boundaries, there
+ may be several steps to the operation */
+ while (1) {
+ len = tty_prepare_flip_string(port, &buf,
+ char_count);
+ if (!len)
+ break;
- len = min_t(unsigned int, min(len, char_count),
- rx_bufsize - new_rx_get);
+ len = min_t(unsigned int, min(len, char_count),
+ rx_bufsize - new_rx_get);
- memcpy_fromio(buf, cinfo->base_addr +
- rx_bufaddr + new_rx_get, len);
+ memcpy_fromio(buf, cinfo->base_addr +
+ rx_bufaddr + new_rx_get, len);
- new_rx_get = (new_rx_get + len) &
- (rx_bufsize - 1);
- char_count -= len;
- info->icount.rx += len;
- info->idle_stats.recv_bytes += len;
- }
+ new_rx_get = (new_rx_get + len) &
+ (rx_bufsize - 1);
+ char_count -= len;
+ info->icount.rx += len;
+ info->idle_stats.recv_bytes += len;
+ }
#else
- len = tty_buffer_request_room(tty, char_count);
- while (len--) {
- data = readb(cinfo->base_addr + rx_bufaddr +
- new_rx_get);
- new_rx_get = (new_rx_get + 1) &
- (rx_bufsize - 1);
- tty_insert_flip_char(tty, data, TTY_NORMAL);
- info->idle_stats.recv_bytes++;
- info->icount.rx++;
- }
+ len = tty_buffer_request_room(port, char_count);
+ while (len--) {
+ data = readb(cinfo->base_addr + rx_bufaddr +
+ new_rx_get);
+ new_rx_get = (new_rx_get + 1) &
+ (rx_bufsize - 1);
+ tty_insert_flip_char(port, data, TTY_NORMAL);
+ info->idle_stats.recv_bytes++;
+ info->icount.rx++;
+ }
#endif
#ifdef CONFIG_CYZ_INTR
- /* Recalculate the number of chars in the RX buffer and issue
- a cmd in case it's higher than the RX high water mark */
- rx_put = readl(&buf_ctrl->rx_put);
- if (rx_put >= rx_get)
- char_count = rx_put - rx_get;
- else
- char_count = rx_put - rx_get + rx_bufsize;
- if (char_count >= readl(&buf_ctrl->rx_threshold) &&
- !timer_pending(&cyz_rx_full_timer[
- info->line]))
- mod_timer(&cyz_rx_full_timer[info->line],
- jiffies + 1);
+ /* Recalculate the number of chars in the RX buffer and issue
+ a cmd in case it's higher than the RX high water mark */
+ rx_put = readl(&buf_ctrl->rx_put);
+ if (rx_put >= rx_get)
+ char_count = rx_put - rx_get;
+ else
+ char_count = rx_put - rx_get + rx_bufsize;
+ if (char_count >= readl(&buf_ctrl->rx_threshold) &&
+ !timer_pending(&cyz_rx_full_timer[
+ info->line]))
+ mod_timer(&cyz_rx_full_timer[info->line],
+ jiffies + 1);
#endif
- info->idle_stats.recv_idle = jiffies;
- tty_schedule_flip(tty);
- }
- /* Update rx_get */
- cy_writel(&buf_ctrl->rx_get, new_rx_get);
- }
+ info->idle_stats.recv_idle = jiffies;
+ tty_schedule_flip(&info->port);
+
+ /* Update rx_get */
+ cy_writel(&buf_ctrl->rx_get, new_rx_get);
}
-static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
+static void cyz_handle_tx(struct cyclades_port *info)
{
struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
struct cyclades_card *cinfo = info->card;
+ struct tty_struct *tty;
u8 data;
unsigned int char_count;
#ifdef BLOCKMOVE
@@ -1039,63 +1030,63 @@
else
char_count = tx_get - tx_put - 1;
- if (char_count) {
+ if (!char_count)
+ return;
+
+ tty = tty_port_tty_get(&info->port);
+ if (tty == NULL)
+ goto ztxdone;
- if (tty == NULL)
- goto ztxdone;
+ if (info->x_char) { /* send special char */
+ data = info->x_char;
- if (info->x_char) { /* send special char */
- data = info->x_char;
-
- cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
- tx_put = (tx_put + 1) & (tx_bufsize - 1);
- info->x_char = 0;
- char_count--;
- info->icount.tx++;
- }
-#ifdef BLOCKMOVE
- while (0 < (small_count = min_t(unsigned int,
- tx_bufsize - tx_put, min_t(unsigned int,
- (SERIAL_XMIT_SIZE - info->xmit_tail),
- min_t(unsigned int, info->xmit_cnt,
- char_count))))) {
-
- memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr +
- tx_put),
- &info->port.xmit_buf[info->xmit_tail],
- small_count);
-
- tx_put = (tx_put + small_count) & (tx_bufsize - 1);
- char_count -= small_count;
- info->icount.tx += small_count;
- info->xmit_cnt -= small_count;
- info->xmit_tail = (info->xmit_tail + small_count) &
- (SERIAL_XMIT_SIZE - 1);
- }
-#else
- while (info->xmit_cnt && char_count) {
- data = info->port.xmit_buf[info->xmit_tail];
- info->xmit_cnt--;
- info->xmit_tail = (info->xmit_tail + 1) &
- (SERIAL_XMIT_SIZE - 1);
-
- cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
- tx_put = (tx_put + 1) & (tx_bufsize - 1);
- char_count--;
- info->icount.tx++;
- }
-#endif
- tty_wakeup(tty);
-ztxdone:
- /* Update tx_put */
- cy_writel(&buf_ctrl->tx_put, tx_put);
+ cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
+ tx_put = (tx_put + 1) & (tx_bufsize - 1);
+ info->x_char = 0;
+ char_count--;
+ info->icount.tx++;
}
+#ifdef BLOCKMOVE
+ while (0 < (small_count = min_t(unsigned int,
+ tx_bufsize - tx_put, min_t(unsigned int,
+ (SERIAL_XMIT_SIZE - info->xmit_tail),
+ min_t(unsigned int, info->xmit_cnt,
+ char_count))))) {
+
+ memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put),
+ &info->port.xmit_buf[info->xmit_tail],
+ small_count);
+
+ tx_put = (tx_put + small_count) & (tx_bufsize - 1);
+ char_count -= small_count;
+ info->icount.tx += small_count;
+ info->xmit_cnt -= small_count;
+ info->xmit_tail = (info->xmit_tail + small_count) &
+ (SERIAL_XMIT_SIZE - 1);
+ }
+#else
+ while (info->xmit_cnt && char_count) {
+ data = info->port.xmit_buf[info->xmit_tail];
+ info->xmit_cnt--;
+ info->xmit_tail = (info->xmit_tail + 1) &
+ (SERIAL_XMIT_SIZE - 1);
+
+ cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
+ tx_put = (tx_put + 1) & (tx_bufsize - 1);
+ char_count--;
+ info->icount.tx++;
+ }
+#endif
+ tty_wakeup(tty);
+ tty_kref_put(tty);
+ztxdone:
+ /* Update tx_put */
+ cy_writel(&buf_ctrl->tx_put, tx_put);
}
static void cyz_handle_cmd(struct cyclades_card *cinfo)
{
struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
- struct tty_struct *tty;
struct cyclades_port *info;
__u32 channel, param, fw_ver;
__u8 cmd;
@@ -1108,23 +1099,20 @@
special_count = 0;
delta_count = 0;
info = &cinfo->ports[channel];
- tty = tty_port_tty_get(&info->port);
- if (tty == NULL)
- continue;
switch (cmd) {
case C_CM_PR_ERROR:
- tty_insert_flip_char(tty, 0, TTY_PARITY);
+ tty_insert_flip_char(&info->port, 0, TTY_PARITY);
info->icount.rx++;
special_count++;
break;
case C_CM_FR_ERROR:
- tty_insert_flip_char(tty, 0, TTY_FRAME);
+ tty_insert_flip_char(&info->port, 0, TTY_FRAME);
info->icount.rx++;
special_count++;
break;
case C_CM_RXBRK:
- tty_insert_flip_char(tty, 0, TTY_BREAK);
+ tty_insert_flip_char(&info->port, 0, TTY_BREAK);
info->icount.rx++;
special_count++;
break;
@@ -1136,8 +1124,14 @@
readl(&info->u.cyz.ch_ctrl->rs_status);
if (dcd & C_RS_DCD)
wake_up_interruptible(&info->port.open_wait);
- else
- tty_hangup(tty);
+ else {
+ struct tty_struct *tty;
+ tty = tty_port_tty_get(&info->port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
+ }
}
break;
case C_CM_MCTS:
@@ -1166,7 +1160,7 @@
printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
"port %ld\n", info->card, channel);
#endif
- cyz_handle_rx(info, tty);
+ cyz_handle_rx(info);
break;
case C_CM_TXBEMPTY:
case C_CM_TXLOWWM:
@@ -1176,7 +1170,7 @@
printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
"port %ld\n", info->card, channel);
#endif
- cyz_handle_tx(info, tty);
+ cyz_handle_tx(info);
break;
#endif /* CONFIG_CYZ_INTR */
case C_CM_FATAL:
@@ -1188,8 +1182,7 @@
if (delta_count)
wake_up_interruptible(&info->port.delta_msr_wait);
if (special_count)
- tty_schedule_flip(tty);
- tty_kref_put(tty);
+ tty_schedule_flip(&info->port);
}
}
@@ -1255,17 +1248,11 @@
cyz_handle_cmd(cinfo);
for (port = 0; port < cinfo->nports; port++) {
- struct tty_struct *tty;
-
info = &cinfo->ports[port];
- tty = tty_port_tty_get(&info->port);
- /* OK to pass NULL to the handle functions below.
- They need to drop the data in that case. */
if (!info->throttle)
- cyz_handle_rx(info, tty);
- cyz_handle_tx(info, tty);
- tty_kref_put(tty);
+ cyz_handle_rx(info);
+ cyz_handle_tx(info);
}
/* poll every 'cyz_polling_cycle' period */
expires = jiffies + cyz_polling_cycle;
diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index c117d77..ed92622 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -371,22 +371,17 @@
static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data)
{
struct ehv_bc_data *bc = data;
- struct tty_struct *ttys = tty_port_tty_get(&bc->port);
unsigned int rx_count, tx_count, len;
int count;
char buffer[EV_BYTE_CHANNEL_MAX_BYTES];
int ret;
- /* ttys could be NULL during a hangup */
- if (!ttys)
- return IRQ_HANDLED;
-
/* Find out how much data needs to be read, and then ask the TTY layer
* if it can handle that much. We want to ensure that every byte we
* read from the byte channel will be accepted by the TTY layer.
*/
ev_byte_channel_poll(bc->handle, &rx_count, &tx_count);
- count = tty_buffer_request_room(ttys, rx_count);
+ count = tty_buffer_request_room(&bc->port, rx_count);
/* 'count' is the maximum amount of data the TTY layer can accept at
* this time. However, during testing, I was never able to get 'count'
@@ -407,7 +402,7 @@
*/
/* Pass the received data to the tty layer. */
- ret = tty_insert_flip_string(ttys, buffer, len);
+ ret = tty_insert_flip_string(&bc->port, buffer, len);
/* 'ret' is the number of bytes that the TTY layer accepted.
* If it's not equal to 'len', then it means the buffer is
@@ -422,9 +417,7 @@
}
/* Tell the tty layer that we're done. */
- tty_flip_buffer_push(ttys);
-
- tty_kref_put(ttys);
+ tty_flip_buffer_push(&bc->port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
new file mode 100644
index 0000000..f17d2e4
--- /dev/null
+++ b/drivers/tty/goldfish.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (C) 2012 Intel, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/module.h>
+
+enum {
+ GOLDFISH_TTY_PUT_CHAR = 0x00,
+ GOLDFISH_TTY_BYTES_READY = 0x04,
+ GOLDFISH_TTY_CMD = 0x08,
+
+ GOLDFISH_TTY_DATA_PTR = 0x10,
+ GOLDFISH_TTY_DATA_LEN = 0x14,
+
+ GOLDFISH_TTY_CMD_INT_DISABLE = 0,
+ GOLDFISH_TTY_CMD_INT_ENABLE = 1,
+ GOLDFISH_TTY_CMD_WRITE_BUFFER = 2,
+ GOLDFISH_TTY_CMD_READ_BUFFER = 3,
+};
+
+struct goldfish_tty {
+ struct tty_port port;
+ spinlock_t lock;
+ void __iomem *base;
+ u32 irq;
+ int opencount;
+ struct console console;
+};
+
+static DEFINE_MUTEX(goldfish_tty_lock);
+static struct tty_driver *goldfish_tty_driver;
+static u32 goldfish_tty_line_count = 8;
+static u32 goldfish_tty_current_line_count;
+static struct goldfish_tty *goldfish_ttys;
+
+static void goldfish_tty_do_write(int line, const char *buf, unsigned count)
+{
+ unsigned long irq_flags;
+ struct goldfish_tty *qtty = &goldfish_ttys[line];
+ void __iomem *base = qtty->base;
+ spin_lock_irqsave(&qtty->lock, irq_flags);
+ writel((u32)buf, base + GOLDFISH_TTY_DATA_PTR);
+ writel(count, base + GOLDFISH_TTY_DATA_LEN);
+ writel(GOLDFISH_TTY_CMD_WRITE_BUFFER, base + GOLDFISH_TTY_CMD);
+ spin_unlock_irqrestore(&qtty->lock, irq_flags);
+}
+
+static irqreturn_t goldfish_tty_interrupt(int irq, void *dev_id)
+{
+ struct platform_device *pdev = dev_id;
+ struct goldfish_tty *qtty = &goldfish_ttys[pdev->id];
+ void __iomem *base = qtty->base;
+ unsigned long irq_flags;
+ unsigned char *buf;
+ u32 count;
+
+ count = readl(base + GOLDFISH_TTY_BYTES_READY);
+ if(count == 0)
+ return IRQ_NONE;
+
+ count = tty_prepare_flip_string(&qtty->port, &buf, count);
+ spin_lock_irqsave(&qtty->lock, irq_flags);
+ writel((u32)buf, base + GOLDFISH_TTY_DATA_PTR);
+ writel(count, base + GOLDFISH_TTY_DATA_LEN);
+ writel(GOLDFISH_TTY_CMD_READ_BUFFER, base + GOLDFISH_TTY_CMD);
+ spin_unlock_irqrestore(&qtty->lock, irq_flags);
+ tty_schedule_flip(&qtty->port);
+ return IRQ_HANDLED;
+}
+
+static int goldfish_tty_activate(struct tty_port *port, struct tty_struct *tty)
+{
+ struct goldfish_tty *qtty = container_of(port, struct goldfish_tty, port);
+ writel(GOLDFISH_TTY_CMD_INT_ENABLE, qtty->base + GOLDFISH_TTY_CMD);
+ return 0;
+}
+
+static void goldfish_tty_shutdown(struct tty_port *port)
+{
+ struct goldfish_tty *qtty = container_of(port, struct goldfish_tty, port);
+ writel(GOLDFISH_TTY_CMD_INT_DISABLE, qtty->base + GOLDFISH_TTY_CMD);
+}
+
+static int goldfish_tty_open(struct tty_struct * tty, struct file * filp)
+{
+ struct goldfish_tty *qtty = &goldfish_ttys[tty->index];
+ return tty_port_open(&qtty->port, tty, filp);
+}
+
+static void goldfish_tty_close(struct tty_struct * tty, struct file * filp)
+{
+ tty_port_close(tty->port, tty, filp);
+}
+
+static void goldfish_tty_hangup(struct tty_struct *tty)
+{
+ tty_port_hangup(tty->port);
+}
+
+static int goldfish_tty_write(struct tty_struct * tty, const unsigned char *buf, int count)
+{
+ goldfish_tty_do_write(tty->index, buf, count);
+ return count;
+}
+
+static int goldfish_tty_write_room(struct tty_struct *tty)
+{
+ return 0x10000;
+}
+
+static int goldfish_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ struct goldfish_tty *qtty = &goldfish_ttys[tty->index];
+ void __iomem *base = qtty->base;
+ return readl(base + GOLDFISH_TTY_BYTES_READY);
+}
+
+static void goldfish_tty_console_write(struct console *co, const char *b, unsigned count)
+{
+ goldfish_tty_do_write(co->index, b, count);
+}
+
+static struct tty_driver *goldfish_tty_console_device(struct console *c, int *index)
+{
+ *index = c->index;
+ return goldfish_tty_driver;
+}
+
+static int goldfish_tty_console_setup(struct console *co, char *options)
+{
+ if((unsigned)co->index > goldfish_tty_line_count)
+ return -ENODEV;
+ if(goldfish_ttys[co->index].base == 0)
+ return -ENODEV;
+ return 0;
+}
+
+static struct tty_port_operations goldfish_port_ops = {
+ .activate = goldfish_tty_activate,
+ .shutdown = goldfish_tty_shutdown
+};
+
+static struct tty_operations goldfish_tty_ops = {
+ .open = goldfish_tty_open,
+ .close = goldfish_tty_close,
+ .hangup = goldfish_tty_hangup,
+ .write = goldfish_tty_write,
+ .write_room = goldfish_tty_write_room,
+ .chars_in_buffer = goldfish_tty_chars_in_buffer,
+};
+
+static int goldfish_tty_create_driver(void)
+{
+ int ret;
+ struct tty_driver *tty;
+
+ goldfish_ttys = kzalloc(sizeof(*goldfish_ttys) * goldfish_tty_line_count, GFP_KERNEL);
+ if(goldfish_ttys == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_goldfish_ttys_failed;
+ }
+ tty = alloc_tty_driver(goldfish_tty_line_count);
+ if(tty == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_tty_driver_failed;
+ }
+ tty->driver_name = "goldfish";
+ tty->name = "ttyGF";
+ tty->type = TTY_DRIVER_TYPE_SERIAL;
+ tty->subtype = SERIAL_TYPE_NORMAL;
+ tty->init_termios = tty_std_termios;
+ tty->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ tty_set_operations(tty, &goldfish_tty_ops);
+ ret = tty_register_driver(tty);
+ if(ret)
+ goto err_tty_register_driver_failed;
+
+ goldfish_tty_driver = tty;
+ return 0;
+
+err_tty_register_driver_failed:
+ put_tty_driver(tty);
+err_alloc_tty_driver_failed:
+ kfree(goldfish_ttys);
+ goldfish_ttys = NULL;
+err_alloc_goldfish_ttys_failed:
+ return ret;
+}
+
+static void goldfish_tty_delete_driver(void)
+{
+ tty_unregister_driver(goldfish_tty_driver);
+ put_tty_driver(goldfish_tty_driver);
+ goldfish_tty_driver = NULL;
+ kfree(goldfish_ttys);
+ goldfish_ttys = NULL;
+}
+
+static int goldfish_tty_probe(struct platform_device *pdev)
+{
+ struct goldfish_tty *qtty;
+ int ret = -EINVAL;
+ int i;
+ struct resource *r;
+ struct device *ttydev;
+ void __iomem *base;
+ u32 irq;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if(r == NULL)
+ return -EINVAL;
+
+ base = ioremap(r->start, 0x1000);
+ if (base == NULL)
+ pr_err("goldfish_tty: unable to remap base\n");
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if(r == NULL)
+ goto err_unmap;
+
+ irq = r->start;
+
+ if(pdev->id >= goldfish_tty_line_count)
+ goto err_unmap;
+
+ mutex_lock(&goldfish_tty_lock);
+ if(goldfish_tty_current_line_count == 0) {
+ ret = goldfish_tty_create_driver();
+ if(ret)
+ goto err_create_driver_failed;
+ }
+ goldfish_tty_current_line_count++;
+
+ qtty = &goldfish_ttys[pdev->id];
+ spin_lock_init(&qtty->lock);
+ tty_port_init(&qtty->port);
+ qtty->port.ops = &goldfish_port_ops;
+ qtty->base = base;
+ qtty->irq = irq;
+
+ writel(GOLDFISH_TTY_CMD_INT_DISABLE, base + GOLDFISH_TTY_CMD);
+
+ ret = request_irq(irq, goldfish_tty_interrupt, IRQF_SHARED, "goldfish_tty", pdev);
+ if(ret)
+ goto err_request_irq_failed;
+
+
+ ttydev = tty_port_register_device(&qtty->port, goldfish_tty_driver,
+ pdev->id, &pdev->dev);
+ if(IS_ERR(ttydev)) {
+ ret = PTR_ERR(ttydev);
+ goto err_tty_register_device_failed;
+ }
+
+ strcpy(qtty->console.name, "ttyGF");
+ qtty->console.write = goldfish_tty_console_write;
+ qtty->console.device = goldfish_tty_console_device;
+ qtty->console.setup = goldfish_tty_console_setup;
+ qtty->console.flags = CON_PRINTBUFFER;
+ qtty->console.index = pdev->id;
+ register_console(&qtty->console);
+
+ mutex_unlock(&goldfish_tty_lock);
+ return 0;
+
+ tty_unregister_device(goldfish_tty_driver, i);
+err_tty_register_device_failed:
+ free_irq(irq, pdev);
+err_request_irq_failed:
+ goldfish_tty_current_line_count--;
+ if(goldfish_tty_current_line_count == 0)
+ goldfish_tty_delete_driver();
+err_create_driver_failed:
+ mutex_unlock(&goldfish_tty_lock);
+err_unmap:
+ iounmap(base);
+ return ret;
+}
+
+static int goldfish_tty_remove(struct platform_device *pdev)
+{
+ struct goldfish_tty *qtty;
+
+ mutex_lock(&goldfish_tty_lock);
+
+ qtty = &goldfish_ttys[pdev->id];
+ unregister_console(&qtty->console);
+ tty_unregister_device(goldfish_tty_driver, pdev->id);
+ iounmap(qtty->base);
+ qtty->base = 0;
+ free_irq(qtty->irq, pdev);
+ goldfish_tty_current_line_count--;
+ if(goldfish_tty_current_line_count == 0)
+ goldfish_tty_delete_driver();
+ mutex_unlock(&goldfish_tty_lock);
+ return 0;
+}
+
+static struct platform_driver goldfish_tty_platform_driver = {
+ .probe = goldfish_tty_probe,
+ .remove = goldfish_tty_remove,
+ .driver = {
+ .name = "goldfish_tty"
+ }
+};
+
+module_platform_driver(goldfish_tty_platform_driver);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index f47b734..8902f9b 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -1,3 +1,5 @@
+if TTY
+
config HVC_DRIVER
bool
help
@@ -119,3 +121,4 @@
which will also be compiled when this driver is built as a
module.
+endif # TTY
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 13ee53bd..eb255e8 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -629,7 +629,7 @@
/* Read data if any */
for (;;) {
- int count = tty_buffer_request_room(tty, N_INBUF);
+ int count = tty_buffer_request_room(&hp->port, N_INBUF);
/* If flip is full, just reschedule a later read */
if (count == 0) {
@@ -672,7 +672,7 @@
}
}
#endif /* CONFIG_MAGIC_SYSRQ */
- tty_insert_flip_char(tty, buf[i], 0);
+ tty_insert_flip_char(&hp->port, buf[i], 0);
}
read_total += n;
@@ -691,7 +691,7 @@
a minimum for performance. */
timeout = MIN_TIMEOUT;
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&hp->port);
}
tty_kref_put(tty);
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index 8776357..1956593 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -609,11 +609,11 @@
/* remove the read masks */
hvcsd->todo_mask &= ~(HVCS_READ_MASK);
- if (tty_buffer_request_room(tty, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
+ if (tty_buffer_request_room(&hvcsd->port, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
got = hvc_get_chars(unit_address,
&buf[0],
HVCS_BUFF_LEN);
- tty_insert_flip_string(tty, buf, got);
+ tty_insert_flip_string(&hvcsd->port, buf, got);
}
/* Give the TTY time to process the data we just sent. */
@@ -623,7 +623,7 @@
spin_unlock_irqrestore(&hvcsd->lock, flags);
/* This is synch because tty->low_latency == 1 */
if(got)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&hvcsd->port);
if (!got) {
/* Do this _after_ the flip_buffer_push */
diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
index 68357a6..ef95a15 100644
--- a/drivers/tty/hvc/hvsi.c
+++ b/drivers/tty/hvc/hvsi.c
@@ -329,8 +329,7 @@
}
}
-static void hvsi_insert_chars(struct hvsi_struct *hp, struct tty_struct *tty,
- const char *buf, int len)
+static void hvsi_insert_chars(struct hvsi_struct *hp, const char *buf, int len)
{
int i;
@@ -346,7 +345,7 @@
continue;
}
#endif /* CONFIG_MAGIC_SYSRQ */
- tty_insert_flip_char(tty, c, 0);
+ tty_insert_flip_char(&hp->port, c, 0);
}
}
@@ -359,8 +358,7 @@
* revisited.
*/
#define TTY_THRESHOLD_THROTTLE 128
-static bool hvsi_recv_data(struct hvsi_struct *hp, struct tty_struct *tty,
- const uint8_t *packet)
+static bool hvsi_recv_data(struct hvsi_struct *hp, const uint8_t *packet)
{
const struct hvsi_header *header = (const struct hvsi_header *)packet;
const uint8_t *data = packet + sizeof(struct hvsi_header);
@@ -377,7 +375,7 @@
datalen = TTY_THRESHOLD_THROTTLE;
}
- hvsi_insert_chars(hp, tty, data, datalen);
+ hvsi_insert_chars(hp, data, datalen);
if (overflow > 0) {
/*
@@ -438,9 +436,7 @@
case VS_DATA_PACKET_HEADER:
if (!is_open(hp))
break;
- if (tty == NULL)
- break; /* no tty buffer to put data in */
- flip = hvsi_recv_data(hp, tty, packet);
+ flip = hvsi_recv_data(hp, packet);
break;
case VS_CONTROL_PACKET_HEADER:
hvsi_recv_control(hp, packet, tty, handshake);
@@ -469,17 +465,17 @@
compact_inbuf(hp, packet);
if (flip)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&hp->port);
return 1;
}
-static void hvsi_send_overflow(struct hvsi_struct *hp, struct tty_struct *tty)
+static void hvsi_send_overflow(struct hvsi_struct *hp)
{
pr_debug("%s: delivering %i bytes overflow\n", __func__,
hp->n_throttle);
- hvsi_insert_chars(hp, tty, hp->throttle_buf, hp->n_throttle);
+ hvsi_insert_chars(hp, hp->throttle_buf, hp->n_throttle);
hp->n_throttle = 0;
}
@@ -514,8 +510,8 @@
if (tty && hp->n_throttle && !test_bit(TTY_THROTTLED, &tty->flags)) {
/* we weren't hung up and we weren't throttled, so we can
* deliver the rest now */
- hvsi_send_overflow(hp, tty);
- tty_flip_buffer_push(tty);
+ hvsi_send_overflow(hp);
+ tty_flip_buffer_push(&hp->port);
}
spin_unlock_irqrestore(&hp->lock, flags);
@@ -1001,8 +997,8 @@
spin_lock_irqsave(&hp->lock, flags);
if (hp->n_throttle) {
- hvsi_send_overflow(hp, tty);
- tty_flip_buffer_push(tty);
+ hvsi_send_overflow(hp);
+ tty_flip_buffer_push(&hp->port);
}
spin_unlock_irqrestore(&hp->lock, flags);
@@ -1187,9 +1183,7 @@
hvsi_wait = poll_for_state; /* no irqs yet; must poll */
/* search device tree for vty nodes */
- for (vty = of_find_compatible_node(NULL, "serial", "hvterm-protocol");
- vty != NULL;
- vty = of_find_compatible_node(vty, "serial", "hvterm-protocol")) {
+ for_each_compatible_node(vty, "serial", "hvterm-protocol") {
struct hvsi_struct *hp;
const uint32_t *vtermno, *irq;
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 2cde13d..8fd72ff 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -106,7 +106,7 @@
tty->port.tty = linux_tty;
linux_tty->driver_data = tty;
- linux_tty->low_latency = 1;
+ tty->port.low_latency = 1;
if (tty->tty_type == TTYTYPE_MODEM)
ipwireless_ppp_open(tty->network);
@@ -160,15 +160,9 @@
void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
unsigned int length)
{
- struct tty_struct *linux_tty;
int work = 0;
mutex_lock(&tty->ipw_tty_mutex);
- linux_tty = tty->port.tty;
- if (linux_tty == NULL) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return;
- }
if (!tty->port.count) {
mutex_unlock(&tty->ipw_tty_mutex);
@@ -176,7 +170,7 @@
}
mutex_unlock(&tty->ipw_tty_mutex);
- work = tty_insert_flip_string(linux_tty, data, length);
+ work = tty_insert_flip_string(&tty->port, data, length);
if (work != length)
printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
@@ -187,7 +181,7 @@
* This may sleep if ->low_latency is set
*/
if (work)
- tty_flip_buffer_push(linux_tty);
+ tty_flip_buffer_push(&tty->port);
}
static void ipw_write_packet_sent_callback(void *callback_data,
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index 3205b2e..858291c 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -634,10 +634,10 @@
break;
case 1: /* Received Break !!! */
- tty_insert_flip_char(tty, 0, TTY_BREAK);
+ tty_insert_flip_char(&port->port, 0, TTY_BREAK);
if (port->port.flags & ASYNC_SAK)
do_SAK(tty);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
break;
case 2: /* Statistics */
@@ -650,15 +650,15 @@
break;
}
} else { /* Data Packet */
-
- count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
+ count = tty_prepare_flip_string(&port->port, &rp,
+ byte_count & ~1);
pr_debug("%s: Can rx %d of %d bytes.\n",
__func__, count, byte_count);
word_count = count >> 1;
insw(base, rp, word_count);
byte_count -= (word_count << 1);
if (count & 0x0001) {
- tty_insert_flip_char(tty, inw(base) & 0xff,
+ tty_insert_flip_char(&port->port, inw(base) & 0xff,
TTY_NORMAL);
byte_count -= 2;
}
@@ -671,7 +671,7 @@
byte_count -= 2;
}
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
outw(0x0000, base+0x04); /* enable interrupts */
spin_unlock(&card->card_lock);
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index f9d2850..adeac25 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1405,7 +1405,7 @@
if (inited && !test_bit(TTY_THROTTLED, &tty->flags) &&
MoxaPortRxQueue(p) > 0) { /* RX */
MoxaPortReadData(p);
- tty_schedule_flip(tty);
+ tty_schedule_flip(&p->port);
}
} else {
clear_bit(EMPTYWAIT, &p->statusflags);
@@ -1429,8 +1429,8 @@
goto put;
if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */
- tty_insert_flip_char(tty, 0, TTY_BREAK);
- tty_schedule_flip(tty);
+ tty_insert_flip_char(&p->port, 0, TTY_BREAK);
+ tty_schedule_flip(&p->port);
}
if (intr & IntrLine)
@@ -1966,7 +1966,7 @@
ofs = baseAddr + DynPage_addr + bufhead + head;
len = (tail >= head) ? (tail - head) :
(rx_mask + 1 - head);
- len = tty_prepare_flip_string(tty, &dst,
+ len = tty_prepare_flip_string(&port->port, &dst,
min(len, count));
memcpy_fromio(dst, ofs, len);
head = (head + len) & rx_mask;
@@ -1978,7 +1978,7 @@
while (count > 0) {
writew(pageno, baseAddr + Control_reg);
ofs = baseAddr + DynPage_addr + pageofs;
- len = tty_prepare_flip_string(tty, &dst,
+ len = tty_prepare_flip_string(&port->port, &dst,
min(Page_size - pageofs, count));
memcpy_fromio(dst, ofs, len);
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 4011386..ad34a202 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1264,7 +1264,7 @@
(new_serial.flags & ASYNC_FLAGS));
port->close_delay = new_serial.close_delay * HZ / 100;
port->closing_wait = new_serial.closing_wait * HZ / 100;
- tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST &&
(new_serial.baud_base != info->baud_base ||
new_serial.custom_divisor !=
@@ -2079,7 +2079,7 @@
}
while (gdl--) {
ch = inb(port->ioaddr + UART_RX);
- tty_insert_flip_char(tty, ch, 0);
+ tty_insert_flip_char(&port->port, ch, 0);
cnt++;
}
goto end_intr;
@@ -2118,7 +2118,7 @@
} else
flag = TTY_BREAK;
}
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(&port->port, ch, flag);
cnt++;
if (cnt >= recv_room) {
if (!port->ldisc_stop_rx)
@@ -2145,7 +2145,7 @@
* recursive locking.
*/
spin_unlock(&port->slock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
spin_lock(&port->slock);
}
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index dcc0430..e0f80ce 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1067,9 +1067,9 @@
if ((mlines & TIOCM_CD) == 0 && (dlci->modem_rx & TIOCM_CD))
if (!(tty->termios.c_cflag & CLOCAL))
tty_hangup(tty);
- if (brk & 0x01)
- tty_insert_flip_char(tty, 0, TTY_BREAK);
}
+ if (brk & 0x01)
+ tty_insert_flip_char(&dlci->port, 0, TTY_BREAK);
dlci->modem_rx = mlines;
}
@@ -1137,7 +1137,7 @@
static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen)
{
- struct tty_struct *tty;
+ struct tty_port *port;
unsigned int addr = 0 ;
u8 bits;
int len = clen;
@@ -1160,19 +1160,18 @@
bits = *dp;
if ((bits & 1) == 0)
return;
- /* See if we have an uplink tty */
- tty = tty_port_tty_get(&gsm->dlci[addr]->port);
- if (tty) {
- if (bits & 2)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- if (bits & 4)
- tty_insert_flip_char(tty, 0, TTY_PARITY);
- if (bits & 8)
- tty_insert_flip_char(tty, 0, TTY_FRAME);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ port = &gsm->dlci[addr]->port;
+
+ if (bits & 2)
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
+ if (bits & 4)
+ tty_insert_flip_char(port, 0, TTY_PARITY);
+ if (bits & 8)
+ tty_insert_flip_char(port, 0, TTY_FRAME);
+
+ tty_flip_buffer_push(port);
+
gsm_control_reply(gsm, CMD_RLS, data, clen);
}
@@ -1545,36 +1544,37 @@
{
/* krefs .. */
struct tty_port *port = &dlci->port;
- struct tty_struct *tty = tty_port_tty_get(port);
+ struct tty_struct *tty;
unsigned int modem = 0;
int len = clen;
if (debug & 16)
- pr_debug("%d bytes for tty %p\n", len, tty);
- if (tty) {
- switch (dlci->adaption) {
- /* Unsupported types */
- /* Packetised interruptible data */
- case 4:
- break;
- /* Packetised uininterruptible voice/data */
- case 3:
- break;
- /* Asynchronous serial with line state in each frame */
- case 2:
- while (gsm_read_ea(&modem, *data++) == 0) {
- len--;
- if (len == 0)
- return;
- }
- gsm_process_modem(tty, dlci, modem, clen);
- /* Line state will go via DLCI 0 controls only */
- case 1:
- default:
- tty_insert_flip_string(tty, data, len);
- tty_flip_buffer_push(tty);
+ pr_debug("%d bytes for tty\n", len);
+ switch (dlci->adaption) {
+ /* Unsupported types */
+ /* Packetised interruptible data */
+ case 4:
+ break;
+ /* Packetised uininterruptible voice/data */
+ case 3:
+ break;
+ /* Asynchronous serial with line state in each frame */
+ case 2:
+ while (gsm_read_ea(&modem, *data++) == 0) {
+ len--;
+ if (len == 0)
+ return;
}
- tty_kref_put(tty);
+ tty = tty_port_tty_get(port);
+ if (tty) {
+ gsm_process_modem(tty, dlci, modem, clen);
+ tty_kref_put(tty);
+ }
+ /* Line state will go via DLCI 0 controls only */
+ case 1:
+ default:
+ tty_insert_flip_string(port, data, len);
+ tty_flip_buffer_push(port);
}
}
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 19083ef..d5cea3b 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -229,6 +229,8 @@
ldata->canon_head = ldata->canon_data = ldata->erasing = 0;
bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
n_tty_set_room(tty);
+
+ check_unthrottle(tty);
}
/**
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index a0c69ab..2dff197 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -827,15 +827,10 @@
struct tty_struct *tty = tty_port_tty_get(&port->port);
int i, ret;
- if (unlikely(!tty)) {
- DBG1("tty not open for port: %d?", index);
- return 1;
- }
-
read_mem32((u32 *) &size, addr, 4);
/* DBG1( "%d bytes port: %d", size, index); */
- if (test_bit(TTY_THROTTLED, &tty->flags)) {
+ if (tty && test_bit(TTY_THROTTLED, &tty->flags)) {
DBG1("No room in tty, don't read data, don't ack interrupt, "
"disable interrupt");
@@ -855,13 +850,14 @@
read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX);
if (size == 1) {
- tty_insert_flip_char(tty, buf[0], TTY_NORMAL);
+ tty_insert_flip_char(&port->port, buf[0], TTY_NORMAL);
size = 0;
} else if (size < RECEIVE_BUF_MAX) {
- size -= tty_insert_flip_string(tty, (char *) buf, size);
+ size -= tty_insert_flip_string(&port->port,
+ (char *)buf, size);
} else {
- i = tty_insert_flip_string(tty, \
- (char *) buf, RECEIVE_BUF_MAX);
+ i = tty_insert_flip_string(&port->port,
+ (char *)buf, RECEIVE_BUF_MAX);
size -= i;
offset += i;
}
@@ -1276,15 +1272,11 @@
exit_handler:
spin_unlock(&dc->spin_mutex);
- for (a = 0; a < NOZOMI_MAX_PORTS; a++) {
- struct tty_struct *tty;
- if (test_and_clear_bit(a, &dc->flip)) {
- tty = tty_port_tty_get(&dc->port[a].port);
- if (tty)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
- }
+
+ for (a = 0; a < NOZOMI_MAX_PORTS; a++)
+ if (test_and_clear_bit(a, &dc->flip))
+ tty_flip_buffer_push(&dc->port[a].port);
+
return IRQ_HANDLED;
none:
spin_unlock(&dc->spin_mutex);
@@ -1687,12 +1679,6 @@
rval = kfifo_in(&port->fifo_ul, (unsigned char *)buffer, count);
- /* notify card */
- if (unlikely(dc == NULL)) {
- DBG1("No device context?");
- goto exit;
- }
-
spin_lock_irqsave(&dc->spin_mutex, flags);
/* CTS is only valid on the modem channel */
if (port == &(dc->port[PORT_MDM])) {
@@ -1708,7 +1694,6 @@
}
spin_unlock_irqrestore(&dc->spin_mutex, flags);
-exit:
return rval;
}
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index 79ff3a5..755600f 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -47,7 +47,6 @@
/* Review - krefs on tty_link ?? */
if (!tty->link)
return;
- tty->link->packet = 0;
set_bit(TTY_OTHER_CLOSED, &tty->link->flags);
wake_up_interruptible(&tty->link->read_wait);
wake_up_interruptible(&tty->link->write_wait);
@@ -55,9 +54,9 @@
set_bit(TTY_OTHER_CLOSED, &tty->flags);
#ifdef CONFIG_UNIX98_PTYS
if (tty->driver == ptm_driver) {
- mutex_lock(&devpts_mutex);
+ mutex_lock(&devpts_mutex);
devpts_pty_kill(tty->link->driver_data);
- mutex_unlock(&devpts_mutex);
+ mutex_unlock(&devpts_mutex);
}
#endif
tty_unlock(tty);
@@ -120,10 +119,10 @@
if (c > 0) {
/* Stuff the data into the input queue of the other end */
- c = tty_insert_flip_string(to, buf, c);
+ c = tty_insert_flip_string(to->port, buf, c);
/* And shovel */
if (c) {
- tty_flip_buffer_push(to);
+ tty_flip_buffer_push(to->port);
tty_wakeup(tty);
}
}
@@ -663,7 +662,7 @@
* Allocate a unix98 pty master device from the ptmx driver.
*
* Locking: tty_mutex protects the init_dev work. tty->count should
- * protect the rest.
+ * protect the rest.
* allocated_ptys_lock handles the list of free pty numbers
*/
@@ -797,7 +796,7 @@
cdev_init(&ptmx_cdev, &ptmx_fops);
if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
- panic("Couldn't register /dev/ptmx driver\n");
+ panic("Couldn't register /dev/ptmx driver");
device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx");
}
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index e42009a..1d27003 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -55,7 +55,7 @@
#undef REV_PCI_ORDER
#undef ROCKET_DEBUG_IO
-#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
+#define POLL_PERIOD (HZ/100) /* Polling period .01 seconds (10ms) */
/****** Kernel includes ******/
@@ -315,9 +315,8 @@
* that receive data is present on a serial port. Pulls data from FIFO, moves it into the
* tty layer.
*/
-static void rp_do_receive(struct r_port *info,
- struct tty_struct *tty,
- CHANNEL_t * cp, unsigned int ChanStatus)
+static void rp_do_receive(struct r_port *info, CHANNEL_t *cp,
+ unsigned int ChanStatus)
{
unsigned int CharNStat;
int ToRecv, wRecv, space;
@@ -379,7 +378,8 @@
flag = TTY_OVERRUN;
else
flag = TTY_NORMAL;
- tty_insert_flip_char(tty, CharNStat & 0xff, flag);
+ tty_insert_flip_char(&info->port, CharNStat & 0xff,
+ flag);
ToRecv--;
}
@@ -399,7 +399,7 @@
* characters at time by doing repeated word IO
* transfer.
*/
- space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
+ space = tty_prepare_flip_string(&info->port, &cbuf, ToRecv);
if (space < ToRecv) {
#ifdef ROCKET_DEBUG_RECEIVE
printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
@@ -415,7 +415,7 @@
cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
}
/* Push the data up to the tty layer */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&info->port);
}
/*
@@ -494,7 +494,6 @@
static void rp_handle_port(struct r_port *info)
{
CHANNEL_t *cp;
- struct tty_struct *tty;
unsigned int IntMask, ChanStatus;
if (!info)
@@ -505,12 +504,7 @@
"info->flags & NOT_INIT\n");
return;
}
- tty = tty_port_tty_get(&info->port);
- if (!tty) {
- printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
- "tty==NULL\n");
- return;
- }
+
cp = &info->channel;
IntMask = sGetChanIntID(cp) & info->intmask;
@@ -519,7 +513,7 @@
#endif
ChanStatus = sGetChanStatus(cp);
if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
- rp_do_receive(info, tty, cp, ChanStatus);
+ rp_do_receive(info, cp, ChanStatus);
}
if (IntMask & DELTA_CD) { /* CD change */
#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
@@ -527,10 +521,15 @@
(ChanStatus & CD_ACT) ? "on" : "off");
#endif
if (!(ChanStatus & CD_ACT) && info->cd_status) {
+ struct tty_struct *tty;
#ifdef ROCKET_DEBUG_HANGUP
printk(KERN_INFO "CD drop, calling hangup.\n");
#endif
- tty_hangup(tty);
+ tty = tty_port_tty_get(&info->port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
}
info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
wake_up_interruptible(&info->port.open_wait);
@@ -543,7 +542,6 @@
printk(KERN_INFO "DSR change...\n");
}
#endif
- tty_kref_put(tty);
}
/*
@@ -1758,8 +1756,29 @@
#ifdef CONFIG_PCI
-static struct pci_device_id __used rocket_pci_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
+static DEFINE_PCI_DEVICE_TABLE(rocket_pci_ids) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4QUAD) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8OCTA) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8OCTA) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8J) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4J) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8SNI) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16SNI) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP16INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_CRP16INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP32INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP32INTF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP8) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_232) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_422) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP6M) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4M) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_8PORT) },
+ { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_4PORT) },
{ }
};
MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
@@ -1781,7 +1800,8 @@
WordIO_t ConfigIO = 0;
ByteIO_t UPCIRingInd = 0;
- if (!dev || pci_enable_device(dev))
+ if (!dev || !pci_match_id(rocket_pci_ids, dev) ||
+ pci_enable_device(dev))
return 0;
rcktpt_io_addr[i] = pci_resource_start(dev, 0);
diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c
index a44345a..c7e8b60 100644
--- a/drivers/tty/serial/21285.c
+++ b/drivers/tty/serial/21285.c
@@ -85,7 +85,6 @@
static irqreturn_t serial21285_rx_chars(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty = port->state->port.tty;
unsigned int status, ch, flag, rxs, max_count = 256;
status = *CSR_UARTFLG;
@@ -115,7 +114,7 @@
status = *CSR_UARTFLG;
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index f99a845..4939947 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -262,8 +262,7 @@
local_irq_restore(flags);
}
-static void receive_chars(struct m68k_serial *info, struct tty_struct *tty,
- unsigned short rx)
+static void receive_chars(struct m68k_serial *info, unsigned short rx)
{
m68328_uart *uart = &uart_addr[info->line];
unsigned char ch, flag;
@@ -293,9 +292,6 @@
}
}
- if(!tty)
- goto clear_and_exit;
-
flag = TTY_NORMAL;
if (rx & URX_PARITY_ERROR)
@@ -305,15 +301,12 @@
else if (rx & URX_FRAME_ERROR)
flag = TTY_FRAME;
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(&info->tport, ch, flag);
#ifndef CONFIG_XCOPILOT_BUGS
} while((rx = uart->urx.w) & URX_DATA_READY);
#endif
- tty_schedule_flip(tty);
-
-clear_and_exit:
- return;
+ tty_schedule_flip(&info->tport);
}
static void transmit_chars(struct m68k_serial *info, struct tty_struct *tty)
@@ -367,11 +360,11 @@
tx = uart->utx.w;
if (rx & URX_DATA_READY)
- receive_chars(info, tty, rx);
+ receive_chars(info, rx);
if (tx & UTX_TX_AVAIL)
transmit_chars(info, tty);
#else
- receive_chars(info, tty, rx);
+ receive_chars(info, rx);
#endif
tty_kref_put(tty);
@@ -1009,7 +1002,7 @@
m68328_uart *uart = &uart_addr[info->line];
unsigned long flags;
- if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
+ if (serial_paranoia_check(info, tty->name, "rs_close"))
return;
local_irq_save(flags);
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index f932043..24939ca 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -239,13 +239,6 @@
.fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
.flags = UART_CAP_FIFO | UART_CAP_UUE | UART_CAP_RTOIE,
},
- [PORT_RM9000] = {
- .name = "RM9000",
- .fifo_size = 16,
- .tx_loadsz = 16,
- .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
- .flags = UART_CAP_FIFO,
- },
[PORT_OCTEON] = {
.name = "OCTEON",
.fifo_size = 64,
@@ -370,56 +363,6 @@
#endif
-#ifdef CONFIG_SERIAL_8250_RM9K
-
-static const u8
- regmap_in[8] = {
- [UART_RX] = 0x00,
- [UART_IER] = 0x0c,
- [UART_IIR] = 0x14,
- [UART_LCR] = 0x1c,
- [UART_MCR] = 0x20,
- [UART_LSR] = 0x24,
- [UART_MSR] = 0x28,
- [UART_SCR] = 0x2c
- },
- regmap_out[8] = {
- [UART_TX] = 0x04,
- [UART_IER] = 0x0c,
- [UART_FCR] = 0x18,
- [UART_LCR] = 0x1c,
- [UART_MCR] = 0x20,
- [UART_LSR] = 0x24,
- [UART_MSR] = 0x28,
- [UART_SCR] = 0x2c
- };
-
-static unsigned int rm9k_serial_in(struct uart_port *p, int offset)
-{
- offset = regmap_in[offset] << p->regshift;
- return readl(p->membase + offset);
-}
-
-static void rm9k_serial_out(struct uart_port *p, int offset, int value)
-{
- offset = regmap_out[offset] << p->regshift;
- writel(value, p->membase + offset);
-}
-
-static int rm9k_serial_dl_read(struct uart_8250_port *up)
-{
- return ((__raw_readl(up->port.membase + 0x10) << 8) |
- (__raw_readl(up->port.membase + 0x08) & 0xff)) & 0xffff;
-}
-
-static void rm9k_serial_dl_write(struct uart_8250_port *up, int value)
-{
- __raw_writel(value, up->port.membase + 0x08);
- __raw_writel(value >> 8, up->port.membase + 0x10);
-}
-
-#endif
-
static unsigned int hub6_serial_in(struct uart_port *p, int offset)
{
offset = offset << p->regshift;
@@ -497,15 +440,6 @@
p->serial_out = mem32_serial_out;
break;
-#ifdef CONFIG_SERIAL_8250_RM9K
- case UPIO_RM9000:
- p->serial_in = rm9k_serial_in;
- p->serial_out = rm9k_serial_out;
- up->dl_read = rm9k_serial_dl_read;
- up->dl_write = rm9k_serial_dl_write;
- break;
-#endif
-
#ifdef CONFIG_MIPS_ALCHEMY
case UPIO_AU:
p->serial_in = au_serial_in;
@@ -1341,7 +1275,9 @@
struct uart_8250_port *up =
container_of(port, struct uart_8250_port, port);
- if (!(up->ier & UART_IER_THRI)) {
+ if (up->dma && !serial8250_tx_dma(up)) {
+ return;
+ } else if (!(up->ier & UART_IER_THRI)) {
up->ier |= UART_IER_THRI;
serial_port_out(port, UART_IER, up->ier);
@@ -1349,9 +1285,7 @@
unsigned char lsr;
lsr = serial_in(up, UART_LSR);
up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
- if ((port->type == PORT_RM9000) ?
- (lsr & UART_LSR_THRE) :
- (lsr & UART_LSR_TEMT))
+ if (lsr & UART_LSR_TEMT)
serial8250_tx_chars(up);
}
}
@@ -1397,7 +1331,6 @@
serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
{
struct uart_port *port = &up->port;
- struct tty_struct *tty = port->state->port.tty;
unsigned char ch;
int max_count = 256;
char flag;
@@ -1462,7 +1395,7 @@
lsr = serial_in(up, UART_LSR);
} while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0));
spin_unlock(&port->lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
spin_lock(&port->lock);
return lsr;
}
@@ -1547,6 +1480,7 @@
unsigned long flags;
struct uart_8250_port *up =
container_of(port, struct uart_8250_port, port);
+ int dma_err = 0;
if (iir & UART_IIR_NO_INT)
return 0;
@@ -1557,8 +1491,13 @@
DEBUG_INTR("status = %x...", status);
- if (status & (UART_LSR_DR | UART_LSR_BI))
- status = serial8250_rx_chars(up, status);
+ if (status & (UART_LSR_DR | UART_LSR_BI)) {
+ if (up->dma)
+ dma_err = serial8250_rx_dma(up, iir);
+
+ if (!up->dma || dma_err)
+ status = serial8250_rx_chars(up, status);
+ }
serial8250_modem_status(up);
if (status & UART_LSR_THRE)
serial8250_tx_chars(up);
@@ -1991,9 +1930,12 @@
if (port->type == PORT_8250_CIR)
return -ENODEV;
- port->fifosize = uart_config[up->port.type].fifo_size;
- up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
- up->capabilities = uart_config[up->port.type].flags;
+ if (!port->fifosize)
+ port->fifosize = uart_config[port->type].fifo_size;
+ if (!up->tx_loadsz)
+ up->tx_loadsz = uart_config[port->type].tx_loadsz;
+ if (!up->capabilities)
+ up->capabilities = uart_config[port->type].flags;
up->mcr = 0;
if (port->iotype != up->cur_iotype)
@@ -2198,6 +2140,18 @@
up->msr_saved_flags = 0;
/*
+ * Request DMA channels for both RX and TX.
+ */
+ if (up->dma) {
+ retval = serial8250_request_dma(up);
+ if (retval) {
+ pr_warn_ratelimited("ttyS%d - failed to request DMA\n",
+ serial_index(port));
+ up->dma = NULL;
+ }
+ }
+
+ /*
* Finally, enable interrupts. Note: Modem status interrupts
* are set via set_termios(), which will be occurring imminently
* anyway, so we don't enable them here.
@@ -2230,6 +2184,9 @@
up->ier = 0;
serial_port_out(port, UART_IER, 0);
+ if (up->dma)
+ serial8250_release_dma(up);
+
spin_lock_irqsave(&port->lock, flags);
if (port->flags & UPF_FOURPORT) {
/* reset interrupts on the AST Fourport board */
@@ -2826,9 +2783,12 @@
serial8250_init_fixed_type_port(struct uart_8250_port *up, unsigned int type)
{
up->port.type = type;
- up->port.fifosize = uart_config[type].fifo_size;
- up->capabilities = uart_config[type].flags;
- up->tx_loadsz = uart_config[type].tx_loadsz;
+ if (!up->port.fifosize)
+ up->port.fifosize = uart_config[type].fifo_size;
+ if (!up->tx_loadsz)
+ up->tx_loadsz = uart_config[type].tx_loadsz;
+ if (!up->capabilities)
+ up->capabilities = uart_config[type].flags;
}
static void __init
@@ -3262,6 +3222,10 @@
uart->bugs = up->bugs;
uart->port.mapbase = up->port.mapbase;
uart->port.private_data = up->port.private_data;
+ uart->port.fifosize = up->port.fifosize;
+ uart->tx_loadsz = up->tx_loadsz;
+ uart->capabilities = up->capabilities;
+
if (up->port.dev)
uart->port.dev = up->port.dev;
@@ -3287,6 +3251,8 @@
uart->dl_read = up->dl_read;
if (up->dl_write)
uart->dl_write = up->dl_write;
+ if (up->dma)
+ uart->dma = up->dma;
if (serial8250_isa_config != NULL)
serial8250_isa_config(0, &uart->port,
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 12caa12..34eb676 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -12,6 +12,35 @@
*/
#include <linux/serial_8250.h>
+#include <linux/dmaengine.h>
+
+struct uart_8250_dma {
+ dma_filter_fn fn;
+ void *rx_param;
+ void *tx_param;
+
+ int rx_chan_id;
+ int tx_chan_id;
+
+ struct dma_slave_config rxconf;
+ struct dma_slave_config txconf;
+
+ struct dma_chan *rxchan;
+ struct dma_chan *txchan;
+
+ dma_addr_t rx_addr;
+ dma_addr_t tx_addr;
+
+ dma_cookie_t rx_cookie;
+ dma_cookie_t tx_cookie;
+
+ void *rx_buf;
+
+ size_t rx_size;
+ size_t tx_size;
+
+ unsigned char tx_running:1;
+};
struct old_serial_port {
unsigned int uart;
@@ -143,3 +172,24 @@
return 0;
}
#endif
+
+#ifdef CONFIG_SERIAL_8250_DMA
+extern int serial8250_tx_dma(struct uart_8250_port *);
+extern int serial8250_rx_dma(struct uart_8250_port *, unsigned int iir);
+extern int serial8250_request_dma(struct uart_8250_port *);
+extern void serial8250_release_dma(struct uart_8250_port *);
+#else
+static inline int serial8250_tx_dma(struct uart_8250_port *p)
+{
+ return -1;
+}
+static inline int serial8250_rx_dma(struct uart_8250_port *p, unsigned int iir)
+{
+ return -1;
+}
+static inline int serial8250_request_dma(struct uart_8250_port *p)
+{
+ return -1;
+}
+static inline void serial8250_release_dma(struct uart_8250_port *p) { }
+#endif
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
new file mode 100644
index 0000000..b9f7fd2
--- /dev/null
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -0,0 +1,216 @@
+/*
+ * 8250_dma.c - DMA Engine API support for 8250.c
+ *
+ * Copyright (C) 2013 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_reg.h>
+#include <linux/dma-mapping.h>
+
+#include "8250.h"
+
+static void __dma_tx_complete(void *param)
+{
+ struct uart_8250_port *p = param;
+ struct uart_8250_dma *dma = p->dma;
+ struct circ_buf *xmit = &p->port.state->xmit;
+
+ dma->tx_running = 0;
+
+ dma_sync_single_for_cpu(dma->txchan->device->dev, dma->tx_addr,
+ UART_XMIT_SIZE, DMA_TO_DEVICE);
+
+ xmit->tail += dma->tx_size;
+ xmit->tail &= UART_XMIT_SIZE - 1;
+ p->port.icount.tx += dma->tx_size;
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&p->port);
+
+ if (!uart_circ_empty(xmit) && !uart_tx_stopped(&p->port)) {
+ serial8250_tx_dma(p);
+ uart_write_wakeup(&p->port);
+ }
+}
+
+static void __dma_rx_complete(void *param)
+{
+ struct uart_8250_port *p = param;
+ struct uart_8250_dma *dma = p->dma;
+ struct tty_port *tty_port = &p->port.state->port;
+ struct dma_tx_state state;
+ int count;
+
+ dma_sync_single_for_cpu(dma->rxchan->device->dev, dma->rx_addr,
+ dma->rx_size, DMA_FROM_DEVICE);
+
+ dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
+ dmaengine_terminate_all(dma->rxchan);
+
+ count = dma->rx_size - state.residue;
+
+ tty_insert_flip_string(tty_port, dma->rx_buf, count);
+ p->port.icount.rx += count;
+
+ tty_flip_buffer_push(tty_port);
+}
+
+int serial8250_tx_dma(struct uart_8250_port *p)
+{
+ struct uart_8250_dma *dma = p->dma;
+ struct circ_buf *xmit = &p->port.state->xmit;
+ struct dma_async_tx_descriptor *desc;
+
+ if (dma->tx_running)
+ return -EBUSY;
+
+ dma->tx_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
+ if (!dma->tx_size)
+ return -EINVAL;
+
+ desc = dmaengine_prep_slave_single(dma->txchan,
+ dma->tx_addr + xmit->tail,
+ dma->tx_size, DMA_MEM_TO_DEV,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!desc)
+ return -EBUSY;
+
+ dma->tx_running = 1;
+
+ desc->callback = __dma_tx_complete;
+ desc->callback_param = p;
+
+ dma->tx_cookie = dmaengine_submit(desc);
+
+ dma_sync_single_for_device(dma->txchan->device->dev, dma->tx_addr,
+ UART_XMIT_SIZE, DMA_TO_DEVICE);
+
+ dma_async_issue_pending(dma->txchan);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(serial8250_tx_dma);
+
+int serial8250_rx_dma(struct uart_8250_port *p, unsigned int iir)
+{
+ struct uart_8250_dma *dma = p->dma;
+ struct dma_async_tx_descriptor *desc;
+ struct dma_tx_state state;
+ int dma_status;
+
+ /*
+ * If RCVR FIFO trigger level was not reached, complete the transfer and
+ * let 8250.c copy the remaining data.
+ */
+ if ((iir & 0x3f) == UART_IIR_RX_TIMEOUT) {
+ dma_status = dmaengine_tx_status(dma->rxchan, dma->rx_cookie,
+ &state);
+ if (dma_status == DMA_IN_PROGRESS) {
+ dmaengine_pause(dma->rxchan);
+ __dma_rx_complete(p);
+ }
+ return -ETIMEDOUT;
+ }
+
+ desc = dmaengine_prep_slave_single(dma->rxchan, dma->rx_addr,
+ dma->rx_size, DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!desc)
+ return -EBUSY;
+
+ desc->callback = __dma_rx_complete;
+ desc->callback_param = p;
+
+ dma->rx_cookie = dmaengine_submit(desc);
+
+ dma_sync_single_for_device(dma->rxchan->device->dev, dma->rx_addr,
+ dma->rx_size, DMA_FROM_DEVICE);
+
+ dma_async_issue_pending(dma->rxchan);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(serial8250_rx_dma);
+
+int serial8250_request_dma(struct uart_8250_port *p)
+{
+ struct uart_8250_dma *dma = p->dma;
+ dma_cap_mask_t mask;
+
+ dma->rxconf.src_addr = p->port.mapbase + UART_RX;
+ dma->txconf.dst_addr = p->port.mapbase + UART_TX;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ /* Get a channel for RX */
+ dma->rxchan = dma_request_channel(mask, dma->fn, dma->rx_param);
+ if (!dma->rxchan)
+ return -ENODEV;
+
+ dmaengine_slave_config(dma->rxchan, &dma->rxconf);
+
+ /* Get a channel for TX */
+ dma->txchan = dma_request_channel(mask, dma->fn, dma->tx_param);
+ if (!dma->txchan) {
+ dma_release_channel(dma->rxchan);
+ return -ENODEV;
+ }
+
+ dmaengine_slave_config(dma->txchan, &dma->txconf);
+
+ /* RX buffer */
+ if (!dma->rx_size)
+ dma->rx_size = PAGE_SIZE;
+
+ dma->rx_buf = dma_alloc_coherent(dma->rxchan->device->dev, dma->rx_size,
+ &dma->rx_addr, GFP_KERNEL);
+ if (!dma->rx_buf) {
+ dma_release_channel(dma->rxchan);
+ dma_release_channel(dma->txchan);
+ return -ENOMEM;
+ }
+
+ /* TX buffer */
+ dma->tx_addr = dma_map_single(dma->txchan->device->dev,
+ p->port.state->xmit.buf,
+ UART_XMIT_SIZE,
+ DMA_TO_DEVICE);
+
+ dev_dbg_ratelimited(p->port.dev, "got both dma channels\n");
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(serial8250_request_dma);
+
+void serial8250_release_dma(struct uart_8250_port *p)
+{
+ struct uart_8250_dma *dma = p->dma;
+
+ if (!dma)
+ return;
+
+ /* Release RX resources */
+ dmaengine_terminate_all(dma->rxchan);
+ dma_free_coherent(dma->rxchan->device->dev, dma->rx_size, dma->rx_buf,
+ dma->rx_addr);
+ dma_release_channel(dma->rxchan);
+ dma->rxchan = NULL;
+
+ /* Release TX resources */
+ dmaengine_terminate_all(dma->txchan);
+ dma_unmap_single(dma->txchan->device->dev, dma->tx_addr,
+ UART_XMIT_SIZE, DMA_TO_DEVICE);
+ dma_release_channel(dma->txchan);
+ dma->txchan = NULL;
+ dma->tx_running = 0;
+
+ dev_dbg_ratelimited(p->port.dev, "dma channels released\n");
+}
+EXPORT_SYMBOL_GPL(serial8250_release_dma);
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 096d2ef..db0e66f 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -2,6 +2,7 @@
* Synopsys DesignWare 8250 driver.
*
* Copyright 2011 Picochip, Jamie Iles.
+ * Copyright 2013 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -24,6 +25,34 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
+
+#include "8250.h"
+
+/* Offsets for the DesignWare specific registers */
+#define DW_UART_USR 0x1f /* UART Status Register */
+#define DW_UART_CPR 0xf4 /* Component Parameter Register */
+#define DW_UART_UCV 0xf8 /* UART Component Version */
+
+/* Intel Low Power Subsystem specific */
+#define LPSS_PRV_CLOCK_PARAMS 0x800
+
+/* Component Parameter Register bits */
+#define DW_UART_CPR_ABP_DATA_WIDTH (3 << 0)
+#define DW_UART_CPR_AFCE_MODE (1 << 4)
+#define DW_UART_CPR_THRE_MODE (1 << 5)
+#define DW_UART_CPR_SIR_MODE (1 << 6)
+#define DW_UART_CPR_SIR_LP_MODE (1 << 7)
+#define DW_UART_CPR_ADDITIONAL_FEATURES (1 << 8)
+#define DW_UART_CPR_FIFO_ACCESS (1 << 9)
+#define DW_UART_CPR_FIFO_STAT (1 << 10)
+#define DW_UART_CPR_SHADOW (1 << 11)
+#define DW_UART_CPR_ENCODED_PARMS (1 << 12)
+#define DW_UART_CPR_DMA_EXTRA (1 << 13)
+#define DW_UART_CPR_FIFO_MODE (0xff << 16)
+/* Helper for fifo size calculation */
+#define DW_UART_CPR_FIFO_SIZE(a) (((a >> 16) & 0xff) * 16)
+
struct dw8250_data {
int last_lcr;
@@ -66,9 +95,6 @@
return readl(p->membase + offset);
}
-/* Offset for the DesignWare's UART Status Register. */
-#define UART_USR 0x1f
-
static int dw8250_handle_irq(struct uart_port *p)
{
struct dw8250_data *d = p->private_data;
@@ -78,7 +104,7 @@
return 1;
} else if ((iir & UART_IIR_BUSY) == UART_IIR_BUSY) {
/* Clear the USR and write the LCR again. */
- (void)p->serial_in(p, UART_USR);
+ (void)p->serial_in(p, DW_UART_USR);
p->serial_out(p, UART_LCR, d->last_lcr);
return 1;
@@ -87,61 +113,210 @@
return 0;
}
+static int dw8250_probe_of(struct uart_port *p)
+{
+ struct device_node *np = p->dev->of_node;
+ u32 val;
+
+ if (!of_property_read_u32(np, "reg-io-width", &val)) {
+ switch (val) {
+ case 1:
+ break;
+ case 4:
+ p->iotype = UPIO_MEM32;
+ p->serial_in = dw8250_serial_in32;
+ p->serial_out = dw8250_serial_out32;
+ break;
+ default:
+ dev_err(p->dev, "unsupported reg-io-width (%u)\n", val);
+ return -EINVAL;
+ }
+ }
+
+ if (!of_property_read_u32(np, "reg-shift", &val))
+ p->regshift = val;
+
+ if (of_property_read_u32(np, "clock-frequency", &val)) {
+ dev_err(p->dev, "no clock-frequency property set\n");
+ return -EINVAL;
+ }
+ p->uartclk = val;
+
+ return 0;
+}
+
+#ifdef CONFIG_ACPI
+static bool dw8250_acpi_dma_filter(struct dma_chan *chan, void *parm)
+{
+ return chan->chan_id == *(int *)parm;
+}
+
+static acpi_status
+dw8250_acpi_walk_resource(struct acpi_resource *res, void *data)
+{
+ struct uart_port *p = data;
+ struct uart_8250_port *port;
+ struct uart_8250_dma *dma;
+ struct acpi_resource_fixed_dma *fixed_dma;
+ struct dma_slave_config *slave;
+
+ port = container_of(p, struct uart_8250_port, port);
+
+ switch (res->type) {
+ case ACPI_RESOURCE_TYPE_FIXED_DMA:
+ fixed_dma = &res->data.fixed_dma;
+
+ /* TX comes first */
+ if (!port->dma) {
+ dma = devm_kzalloc(p->dev, sizeof(*dma), GFP_KERNEL);
+ if (!dma)
+ return AE_NO_MEMORY;
+
+ port->dma = dma;
+ slave = &dma->txconf;
+
+ slave->direction = DMA_MEM_TO_DEV;
+ slave->dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ slave->slave_id = fixed_dma->request_lines;
+ slave->dst_maxburst = port->tx_loadsz / 4;
+
+ dma->tx_chan_id = fixed_dma->channels;
+ dma->tx_param = &dma->tx_chan_id;
+ dma->fn = dw8250_acpi_dma_filter;
+ } else {
+ dma = port->dma;
+ slave = &dma->rxconf;
+
+ slave->direction = DMA_DEV_TO_MEM;
+ slave->src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ slave->slave_id = fixed_dma->request_lines;
+ slave->src_maxburst = p->fifosize / 4;
+
+ dma->rx_chan_id = fixed_dma->channels;
+ dma->rx_param = &dma->rx_chan_id;
+ }
+
+ break;
+ }
+
+ return AE_OK;
+}
+
+static int dw8250_probe_acpi(struct uart_port *p)
+{
+ const struct acpi_device_id *id;
+ acpi_status status;
+ u32 reg;
+
+ id = acpi_match_device(p->dev->driver->acpi_match_table, p->dev);
+ if (!id)
+ return -ENODEV;
+
+ p->iotype = UPIO_MEM32;
+ p->serial_in = dw8250_serial_in32;
+ p->serial_out = dw8250_serial_out32;
+ p->regshift = 2;
+ p->uartclk = (unsigned int)id->driver_data;
+
+ status = acpi_walk_resources(ACPI_HANDLE(p->dev), METHOD_NAME__CRS,
+ dw8250_acpi_walk_resource, p);
+ if (ACPI_FAILURE(status)) {
+ dev_err_ratelimited(p->dev, "%s failed \"%s\"\n", __func__,
+ acpi_format_exception(status));
+ return -ENODEV;
+ }
+
+ /* Fix Haswell issue where the clocks do not get enabled */
+ if (!strcmp(id->id, "INT33C4") || !strcmp(id->id, "INT33C5")) {
+ reg = readl(p->membase + LPSS_PRV_CLOCK_PARAMS);
+ writel(reg | 1, p->membase + LPSS_PRV_CLOCK_PARAMS);
+ }
+
+ return 0;
+}
+#else
+static inline int dw8250_probe_acpi(struct uart_port *p)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_ACPI */
+
+static void dw8250_setup_port(struct uart_8250_port *up)
+{
+ struct uart_port *p = &up->port;
+ u32 reg = readl(p->membase + DW_UART_UCV);
+
+ /*
+ * If the Component Version Register returns zero, we know that
+ * ADDITIONAL_FEATURES are not enabled. No need to go any further.
+ */
+ if (!reg)
+ return;
+
+ dev_dbg_ratelimited(p->dev, "Designware UART version %c.%c%c\n",
+ (reg >> 24) & 0xff, (reg >> 16) & 0xff, (reg >> 8) & 0xff);
+
+ reg = readl(p->membase + DW_UART_CPR);
+ if (!reg)
+ return;
+
+ /* Select the type based on fifo */
+ if (reg & DW_UART_CPR_FIFO_MODE) {
+ p->type = PORT_16550A;
+ p->flags |= UPF_FIXED_TYPE;
+ p->fifosize = DW_UART_CPR_FIFO_SIZE(reg);
+ up->tx_loadsz = p->fifosize;
+ }
+}
+
static int dw8250_probe(struct platform_device *pdev)
{
struct uart_8250_port uart = {};
struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- struct device_node *np = pdev->dev.of_node;
- u32 val;
struct dw8250_data *data;
+ int err;
if (!regs || !irq) {
dev_err(&pdev->dev, "no registers/irq defined\n");
return -EINVAL;
}
- data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
- uart.port.private_data = data;
-
spin_lock_init(&uart.port.lock);
uart.port.mapbase = regs->start;
uart.port.irq = irq->start;
uart.port.handle_irq = dw8250_handle_irq;
uart.port.type = PORT_8250;
- uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP |
- UPF_FIXED_PORT | UPF_FIXED_TYPE;
+ uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT;
uart.port.dev = &pdev->dev;
+ uart.port.membase = ioremap(regs->start, resource_size(regs));
+ if (!uart.port.membase)
+ return -ENOMEM;
+
uart.port.iotype = UPIO_MEM;
uart.port.serial_in = dw8250_serial_in;
uart.port.serial_out = dw8250_serial_out;
- if (!of_property_read_u32(np, "reg-io-width", &val)) {
- switch (val) {
- case 1:
- break;
- case 4:
- uart.port.iotype = UPIO_MEM32;
- uart.port.serial_in = dw8250_serial_in32;
- uart.port.serial_out = dw8250_serial_out32;
- break;
- default:
- dev_err(&pdev->dev, "unsupported reg-io-width (%u)\n",
- val);
- return -EINVAL;
- }
+
+ dw8250_setup_port(&uart);
+
+ if (pdev->dev.of_node) {
+ err = dw8250_probe_of(&uart.port);
+ if (err)
+ return err;
+ } else if (ACPI_HANDLE(&pdev->dev)) {
+ err = dw8250_probe_acpi(&uart.port);
+ if (err)
+ return err;
+ } else {
+ return -ENODEV;
}
- if (!of_property_read_u32(np, "reg-shift", &val))
- uart.port.regshift = val;
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- if (of_property_read_u32(np, "clock-frequency", &val)) {
- dev_err(&pdev->dev, "no clock-frequency property set\n");
- return -EINVAL;
- }
- uart.port.uartclk = val;
+ uart.port.private_data = data;
data->line = serial8250_register_8250_port(&uart);
if (data->line < 0)
@@ -184,17 +359,25 @@
#define dw8250_resume NULL
#endif /* CONFIG_PM */
-static const struct of_device_id dw8250_match[] = {
+static const struct of_device_id dw8250_of_match[] = {
{ .compatible = "snps,dw-apb-uart" },
{ /* Sentinel */ }
};
-MODULE_DEVICE_TABLE(of, dw8250_match);
+MODULE_DEVICE_TABLE(of, dw8250_of_match);
+
+static const struct acpi_device_id dw8250_acpi_match[] = {
+ { "INT33C4", 100000000 },
+ { "INT33C5", 100000000 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match);
static struct platform_driver dw8250_platform_driver = {
.driver = {
.name = "dw-apb-uart",
.owner = THIS_MODULE,
- .of_match_table = dw8250_match,
+ .of_match_table = dw8250_of_match,
+ .acpi_match_table = ACPI_PTR(dw8250_acpi_match),
},
.probe = dw8250_probe,
.remove = dw8250_remove,
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index f53a7db..721904f 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -194,7 +194,7 @@
options++;
device->baud = simple_strtoul(options, NULL, 0);
length = min(strcspn(options, " "), sizeof(device->options));
- strncpy(device->options, options, length);
+ strlcpy(device->options, options, length);
} else {
device->baud = probe_baud(port);
snprintf(device->options, sizeof(device->options), "%u",
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index a27a98e..3cb3332 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1040,6 +1040,253 @@
return pci_default_setup(priv, board, port, idx);
}
+/* Quatech devices have their own extra interface features */
+
+struct quatech_feature {
+ u16 devid;
+ bool amcc;
+};
+
+#define QPCR_TEST_FOR1 0x3F
+#define QPCR_TEST_GET1 0x00
+#define QPCR_TEST_FOR2 0x40
+#define QPCR_TEST_GET2 0x40
+#define QPCR_TEST_FOR3 0x80
+#define QPCR_TEST_GET3 0x40
+#define QPCR_TEST_FOR4 0xC0
+#define QPCR_TEST_GET4 0x80
+
+#define QOPR_CLOCK_X1 0x0000
+#define QOPR_CLOCK_X2 0x0001
+#define QOPR_CLOCK_X4 0x0002
+#define QOPR_CLOCK_X8 0x0003
+#define QOPR_CLOCK_RATE_MASK 0x0003
+
+
+static struct quatech_feature quatech_cards[] = {
+ { PCI_DEVICE_ID_QUATECH_QSC100, 1 },
+ { PCI_DEVICE_ID_QUATECH_DSC100, 1 },
+ { PCI_DEVICE_ID_QUATECH_DSC100E, 0 },
+ { PCI_DEVICE_ID_QUATECH_DSC200, 1 },
+ { PCI_DEVICE_ID_QUATECH_DSC200E, 0 },
+ { PCI_DEVICE_ID_QUATECH_ESC100D, 1 },
+ { PCI_DEVICE_ID_QUATECH_ESC100M, 1 },
+ { PCI_DEVICE_ID_QUATECH_QSCP100, 1 },
+ { PCI_DEVICE_ID_QUATECH_DSCP100, 1 },
+ { PCI_DEVICE_ID_QUATECH_QSCP200, 1 },
+ { PCI_DEVICE_ID_QUATECH_DSCP200, 1 },
+ { PCI_DEVICE_ID_QUATECH_ESCLP100, 0 },
+ { PCI_DEVICE_ID_QUATECH_QSCLP100, 0 },
+ { PCI_DEVICE_ID_QUATECH_DSCLP100, 0 },
+ { PCI_DEVICE_ID_QUATECH_SSCLP100, 0 },
+ { PCI_DEVICE_ID_QUATECH_QSCLP200, 0 },
+ { PCI_DEVICE_ID_QUATECH_DSCLP200, 0 },
+ { PCI_DEVICE_ID_QUATECH_SSCLP200, 0 },
+ { PCI_DEVICE_ID_QUATECH_SPPXP_100, 0 },
+ { 0, }
+};
+
+static int pci_quatech_amcc(u16 devid)
+{
+ struct quatech_feature *qf = &quatech_cards[0];
+ while (qf->devid) {
+ if (qf->devid == devid)
+ return qf->amcc;
+ qf++;
+ }
+ pr_err("quatech: unknown port type '0x%04X'.\n", devid);
+ return 0;
+};
+
+static int pci_quatech_rqopr(struct uart_8250_port *port)
+{
+ unsigned long base = port->port.iobase;
+ u8 LCR, val;
+
+ LCR = inb(base + UART_LCR);
+ outb(0xBF, base + UART_LCR);
+ val = inb(base + UART_SCR);
+ outb(LCR, base + UART_LCR);
+ return val;
+}
+
+static void pci_quatech_wqopr(struct uart_8250_port *port, u8 qopr)
+{
+ unsigned long base = port->port.iobase;
+ u8 LCR, val;
+
+ LCR = inb(base + UART_LCR);
+ outb(0xBF, base + UART_LCR);
+ val = inb(base + UART_SCR);
+ outb(qopr, base + UART_SCR);
+ outb(LCR, base + UART_LCR);
+}
+
+static int pci_quatech_rqmcr(struct uart_8250_port *port)
+{
+ unsigned long base = port->port.iobase;
+ u8 LCR, val, qmcr;
+
+ LCR = inb(base + UART_LCR);
+ outb(0xBF, base + UART_LCR);
+ val = inb(base + UART_SCR);
+ outb(val | 0x10, base + UART_SCR);
+ qmcr = inb(base + UART_MCR);
+ outb(val, base + UART_SCR);
+ outb(LCR, base + UART_LCR);
+
+ return qmcr;
+}
+
+static void pci_quatech_wqmcr(struct uart_8250_port *port, u8 qmcr)
+{
+ unsigned long base = port->port.iobase;
+ u8 LCR, val;
+
+ LCR = inb(base + UART_LCR);
+ outb(0xBF, base + UART_LCR);
+ val = inb(base + UART_SCR);
+ outb(val | 0x10, base + UART_SCR);
+ outb(qmcr, base + UART_MCR);
+ outb(val, base + UART_SCR);
+ outb(LCR, base + UART_LCR);
+}
+
+static int pci_quatech_has_qmcr(struct uart_8250_port *port)
+{
+ unsigned long base = port->port.iobase;
+ u8 LCR, val;
+
+ LCR = inb(base + UART_LCR);
+ outb(0xBF, base + UART_LCR);
+ val = inb(base + UART_SCR);
+ if (val & 0x20) {
+ outb(0x80, UART_LCR);
+ if (!(inb(UART_SCR) & 0x20)) {
+ outb(LCR, base + UART_LCR);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int pci_quatech_test(struct uart_8250_port *port)
+{
+ u8 reg;
+ u8 qopr = pci_quatech_rqopr(port);
+ pci_quatech_wqopr(port, qopr & QPCR_TEST_FOR1);
+ reg = pci_quatech_rqopr(port) & 0xC0;
+ if (reg != QPCR_TEST_GET1)
+ return -EINVAL;
+ pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR2);
+ reg = pci_quatech_rqopr(port) & 0xC0;
+ if (reg != QPCR_TEST_GET2)
+ return -EINVAL;
+ pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR3);
+ reg = pci_quatech_rqopr(port) & 0xC0;
+ if (reg != QPCR_TEST_GET3)
+ return -EINVAL;
+ pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR4);
+ reg = pci_quatech_rqopr(port) & 0xC0;
+ if (reg != QPCR_TEST_GET4)
+ return -EINVAL;
+
+ pci_quatech_wqopr(port, qopr);
+ return 0;
+}
+
+static int pci_quatech_clock(struct uart_8250_port *port)
+{
+ u8 qopr, reg, set;
+ unsigned long clock;
+
+ if (pci_quatech_test(port) < 0)
+ return 1843200;
+
+ qopr = pci_quatech_rqopr(port);
+
+ pci_quatech_wqopr(port, qopr & ~QOPR_CLOCK_X8);
+ reg = pci_quatech_rqopr(port);
+ if (reg & QOPR_CLOCK_X8) {
+ clock = 1843200;
+ goto out;
+ }
+ pci_quatech_wqopr(port, qopr | QOPR_CLOCK_X8);
+ reg = pci_quatech_rqopr(port);
+ if (!(reg & QOPR_CLOCK_X8)) {
+ clock = 1843200;
+ goto out;
+ }
+ reg &= QOPR_CLOCK_X8;
+ if (reg == QOPR_CLOCK_X2) {
+ clock = 3685400;
+ set = QOPR_CLOCK_X2;
+ } else if (reg == QOPR_CLOCK_X4) {
+ clock = 7372800;
+ set = QOPR_CLOCK_X4;
+ } else if (reg == QOPR_CLOCK_X8) {
+ clock = 14745600;
+ set = QOPR_CLOCK_X8;
+ } else {
+ clock = 1843200;
+ set = QOPR_CLOCK_X1;
+ }
+ qopr &= ~QOPR_CLOCK_RATE_MASK;
+ qopr |= set;
+
+out:
+ pci_quatech_wqopr(port, qopr);
+ return clock;
+}
+
+static int pci_quatech_rs422(struct uart_8250_port *port)
+{
+ u8 qmcr;
+ int rs422 = 0;
+
+ if (!pci_quatech_has_qmcr(port))
+ return 0;
+ qmcr = pci_quatech_rqmcr(port);
+ pci_quatech_wqmcr(port, 0xFF);
+ if (pci_quatech_rqmcr(port))
+ rs422 = 1;
+ pci_quatech_wqmcr(port, qmcr);
+ return rs422;
+}
+
+static int pci_quatech_init(struct pci_dev *dev)
+{
+ if (pci_quatech_amcc(dev->device)) {
+ unsigned long base = pci_resource_start(dev, 0);
+ if (base) {
+ u32 tmp;
+ outl(inl(base + 0x38), base + 0x38);
+ tmp = inl(base + 0x3c);
+ outl(tmp | 0x01000000, base + 0x3c);
+ outl(tmp, base + 0x3c);
+ }
+ }
+ return 0;
+}
+
+static int pci_quatech_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
+{
+ /* Needed by pci_quatech calls below */
+ port->port.iobase = pci_resource_start(priv->dev, FL_GET_BASE(board->flags));
+ /* Set up the clocking */
+ port->port.uartclk = pci_quatech_clock(port);
+ /* For now just warn about RS422 */
+ if (pci_quatech_rs422(port))
+ pr_warn("quatech: software control of RS422 features not currently supported.\n");
+ return pci_default_setup(priv, board, port, idx);
+}
+
+static void pci_quatech_exit(struct pci_dev *dev)
+{
+}
+
static int pci_default_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port, int idx)
@@ -1541,6 +1788,16 @@
.setup = pci_ni8430_setup,
.exit = pci_ni8430_exit,
},
+ /* Quatech */
+ {
+ .vendor = PCI_VENDOR_ID_QUATECH,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .init = pci_quatech_init,
+ .setup = pci_quatech_setup,
+ .exit = pci_quatech_exit,
+ },
/*
* Panacom
*/
@@ -3506,18 +3763,70 @@
{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_ROMULUS,
0x10b5, 0x106a, 0, 0,
pbn_plx_romulus },
+ /*
+ * Quatech cards. These actually have configurable clocks but for
+ * now we just use the default.
+ *
+ * 100 series are RS232, 200 series RS422,
+ */
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSC100,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b1_4_115200 },
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC100,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b1_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC100E,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC200E,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSC200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_4_115200 },
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100D,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b1_8_115200 },
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100M,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b1_8_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSCP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_4_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSCP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSCP200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_4_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSCP200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSCLP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_4_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSCLP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SSCLP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_1_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSCLP200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_4_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSCLP200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SSCLP200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_1_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESCLP100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_8_115200 },
+
{ PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_OXSEMI_16PCI954,
PCI_VENDOR_ID_SPECIALIX, PCI_SUBDEVICE_ID_SPECIALIX_SPEED4,
0, 0,
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index c31133a..d31f4c6 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -84,6 +84,14 @@
depends on SERIAL_8250 && GSC
default SERIAL_8250
+config SERIAL_8250_DMA
+ bool "DMA support for 16550 compatible UART controllers" if EXPERT
+ depends on SERIAL_8250 && DMADEVICES=y
+ default SERIAL_8250
+ help
+ This builds DMA support that can be used with 8250/16650
+ compatible UART controllers that support DMA signaling.
+
config SERIAL_8250_PCI
tristate "8250/16550 PCI device support" if EXPERT
depends on SERIAL_8250 && PCI
@@ -249,15 +257,6 @@
system, say Y to this option. The driver can handle 1, 2, or 3 port
cards. If unsure, say N.
-config SERIAL_8250_RM9K
- bool "Support for MIPS RM9xxx integrated serial port"
- depends on SERIAL_8250 != n && SERIAL_RM9000
- select SERIAL_8250_SHARE_IRQ
- help
- Selecting this option will add support for the integrated serial
- port hardware found on MIPS RM9122 and similar processors.
- If unsure, say N.
-
config SERIAL_8250_FSL
bool
depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
@@ -265,7 +264,7 @@
config SERIAL_8250_DW
tristate "Support for Synopsys DesignWare 8250 quirks"
- depends on SERIAL_8250 && OF
+ depends on SERIAL_8250
help
Selecting this option will enable handling of the extra features
present in the Synopsys DesignWare APB UART.
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index 108fe7f..a23838a 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -5,6 +5,7 @@
obj-$(CONFIG_SERIAL_8250) += 8250_core.o
8250_core-y := 8250.o
8250_core-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
+8250_core-$(CONFIG_SERIAL_8250_DMA) += 8250_dma.o
obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o
obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 59c23d0..e9aeccdf 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -2,6 +2,8 @@
# Serial device configuration
#
+if TTY
+
menu "Serial drivers"
depends on HAS_IOMEM
@@ -269,6 +271,17 @@
your boot loader about how to pass options to the kernel at
boot time.)
+config SERIAL_TEGRA
+ tristate "NVIDIA Tegra20/30 SoC serial controller"
+ depends on ARCH_TEGRA && TEGRA20_APB_DMA
+ select SERIAL_CORE
+ help
+ Support for the on-chip UARTs on the NVIDIA Tegra series SOCs
+ providing /dev/ttyHS0, 1, 2, 3 and 4 (note, some machines may not
+ provide all of these ports, depending on how the serial port
+ are enabled). This driver uses the APB DMA to achieve higher baudrate
+ and better performance.
+
config SERIAL_MAX3100
tristate "MAX3100 support"
depends on SPI
@@ -1447,4 +1460,30 @@
Set this to the number of serial ports you want the driver
to support.
+config SERIAL_RP2
+ tristate "Comtrol RocketPort EXPRESS/INFINITY support"
+ depends on PCI
+ select SERIAL_CORE
+ help
+ This driver supports the Comtrol RocketPort EXPRESS and
+ RocketPort INFINITY families of PCI/PCIe multiport serial adapters.
+ These adapters use a "RocketPort 2" ASIC that is not compatible
+ with the original RocketPort driver (CONFIG_ROCKETPORT).
+
+ To compile this driver as a module, choose M here: the
+ module will be called rp2.
+
+ If you want to compile this driver into the kernel, say Y here. If
+ you don't have a suitable RocketPort card installed, say N.
+
+config SERIAL_RP2_NR_UARTS
+ int "Maximum number of RocketPort EXPRESS/INFINITY ports"
+ depends on SERIAL_RP2
+ default "32"
+ help
+ If multiple cards are present, the default limit of 32 ports may
+ need to be increased.
+
endmenu
+
+endif # TTY
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index df1b998..eedfec4 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -80,6 +80,8 @@
obj-$(CONFIG_SERIAL_LANTIQ) += lantiq.o
obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o
obj-$(CONFIG_SERIAL_SIRFSOC) += sirfsoc_uart.o
+obj-$(CONFIG_SERIAL_TEGRA) += serial-tegra.o
obj-$(CONFIG_SERIAL_AR933X) += ar933x_uart.o
obj-$(CONFIG_SERIAL_EFM32_UART) += efm32-uart.o
obj-$(CONFIG_SERIAL_ARC) += arc_uart.o
+obj-$(CONFIG_SERIAL_RP2) += rp2.o
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index 872f14a..84b90fd 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -139,7 +139,7 @@
uart_insert_char(port, 0, 0, ch, flag);
}
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(&port->state->port);
}
static void altera_jtaguart_tx_chars(struct altera_jtaguart *pp)
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index 684a080..e133c88 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -231,7 +231,7 @@
flag);
}
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(&port->state->port);
}
static void altera_uart_tx_chars(struct altera_uart *pp)
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 22317dd..c3684051 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -116,7 +116,6 @@
static void pl010_rx_chars(struct uart_amba_port *uap)
{
- struct tty_struct *tty = uap->port.state->port.tty;
unsigned int status, ch, flag, rsr, max_count = 256;
status = readb(uap->port.membase + UART01x_FR);
@@ -165,7 +164,7 @@
status = readb(uap->port.membase + UART01x_FR);
}
spin_unlock(&uap->port.lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&uap->port.state->port);
spin_lock(&uap->port.lock);
}
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 7fca402..3ea5408 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -698,7 +698,7 @@
u32 pending, bool use_buf_b,
bool readfifo)
{
- struct tty_struct *tty = uap->port.state->port.tty;
+ struct tty_port *port = &uap->port.state->port;
struct pl011_sgbuf *sgbuf = use_buf_b ?
&uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
struct device *dev = uap->dmarx.chan->device->dev;
@@ -715,8 +715,7 @@
* Note that tty_insert_flip_buf() tries to take as many chars
* as it can.
*/
- dma_count = tty_insert_flip_string(uap->port.state->port.tty,
- sgbuf->buf, pending);
+ dma_count = tty_insert_flip_string(port, sgbuf->buf, pending);
/* Return buffer to device */
dma_sync_sg_for_device(dev, &sgbuf->sg, 1, DMA_FROM_DEVICE);
@@ -754,7 +753,7 @@
dev_vdbg(uap->port.dev,
"Took %d chars from DMA buffer and %d chars from the FIFO\n",
dma_count, fifotaken);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
spin_lock(&uap->port.lock);
}
@@ -1076,12 +1075,10 @@
static void pl011_rx_chars(struct uart_amba_port *uap)
{
- struct tty_struct *tty = uap->port.state->port.tty;
-
pl011_fifo_to_tty(uap);
spin_unlock(&uap->port.lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&uap->port.state->port);
/*
* If we were temporarily out of DMA mode for a while,
* attempt to switch back to DMA mode again.
diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c
index 59ae2b5..6331464 100644
--- a/drivers/tty/serial/apbuart.c
+++ b/drivers/tty/serial/apbuart.c
@@ -78,7 +78,6 @@
static void apbuart_rx_chars(struct uart_port *port)
{
- struct tty_struct *tty = port->state->port.tty;
unsigned int status, ch, rsr, flag;
unsigned int max_chars = port->fifosize;
@@ -126,7 +125,7 @@
status = UART_GET_STATUS(port);
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
}
static void apbuart_tx_chars(struct uart_port *port)
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 505c490..27f20c5 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -297,10 +297,9 @@
static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
{
- struct tty_struct *tty;
+ struct tty_port *port = &up->port.state->port;
int max_count = 256;
- tty = tty_port_tty_get(&up->port.state->port);
do {
unsigned int rdata;
unsigned char ch;
@@ -313,11 +312,6 @@
ar933x_uart_write(up, AR933X_UART_DATA_REG,
AR933X_UART_DATA_RX_CSR);
- if (!tty) {
- /* discard the data if no tty available */
- continue;
- }
-
up->port.icount.rx++;
ch = rdata & AR933X_UART_DATA_TX_RX_MASK;
@@ -325,13 +319,10 @@
continue;
if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0)
- tty_insert_flip_char(tty, ch, TTY_NORMAL);
+ tty_insert_flip_char(port, ch, TTY_NORMAL);
} while (max_count-- > 0);
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(port);
}
static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 3e0b3fa..6f7eadc4 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -37,6 +37,8 @@
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
/*************************************
* ARC UART Hardware Specs
@@ -209,12 +211,8 @@
static void arc_serial_rx_chars(struct arc_uart_port *uart)
{
- struct tty_struct *tty = tty_port_tty_get(&uart->port.state->port);
unsigned int status, ch, flg = 0;
- if (!tty)
- return;
-
/*
* UART has 4 deep RX-FIFO. Driver's recongnition of this fact
* is very subtle. Here's how ...
@@ -250,10 +248,8 @@
uart_insert_char(&uart->port, status, RXOERR, ch, flg);
done:
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&uart->port.state->port);
}
-
- tty_kref_put(tty);
}
/*
@@ -526,18 +522,37 @@
};
static int
-arc_uart_init_one(struct platform_device *pdev, struct arc_uart_port *uart)
+arc_uart_init_one(struct platform_device *pdev, int dev_id)
{
struct resource *res, *res2;
unsigned long *plat_data;
-
- if (pdev->id < 0 || pdev->id >= CONFIG_SERIAL_ARC_NR_PORTS) {
- dev_err(&pdev->dev, "Wrong uart platform device id.\n");
- return -ENOENT;
- }
+ struct arc_uart_port *uart = &arc_uart_ports[dev_id];
plat_data = ((unsigned long *)(pdev->dev.platform_data));
- uart->baud = plat_data[0];
+ if (!plat_data)
+ return -ENODEV;
+
+ uart->is_emulated = !!plat_data[0]; /* workaround ISS bug */
+
+ if (is_early_platform_device(pdev)) {
+ uart->port.uartclk = plat_data[1];
+ uart->baud = plat_data[2];
+ } else {
+ struct device_node *np = pdev->dev.of_node;
+ u32 val;
+
+ if (of_property_read_u32(np, "clock-frequency", &val)) {
+ dev_err(&pdev->dev, "clock-frequency property NOTset\n");
+ return -EINVAL;
+ }
+ uart->port.uartclk = val;
+
+ if (of_property_read_u32(np, "baud", &val)) {
+ dev_err(&pdev->dev, "baud property NOT set\n");
+ return -EINVAL;
+ }
+ uart->baud = val;
+ }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
@@ -557,10 +572,9 @@
uart->port.dev = &pdev->dev;
uart->port.iotype = UPIO_MEM;
uart->port.flags = UPF_BOOT_AUTOCONF;
- uart->port.line = pdev->id;
+ uart->port.line = dev_id;
uart->port.ops = &arc_serial_pops;
- uart->port.uartclk = plat_data[1];
uart->port.fifosize = ARC_UART_TX_FIFO_SIZE;
/*
@@ -569,9 +583,6 @@
*/
uart->port.ignore_status_mask = 0;
- /* Real Hardware vs. emulated to work around a bug */
- uart->is_emulated = !!plat_data[2];
-
return 0;
}
@@ -648,45 +659,52 @@
}
}
-static struct __initdata console arc_early_serial_console = {
+static struct console arc_early_serial_console __initdata = {
.name = "early_ARCuart",
.write = early_serial_write,
.flags = CON_PRINTBUFFER | CON_BOOT,
.index = -1
};
-static int arc_serial_probe_earlyprintk(struct platform_device *pdev)
+static int __init arc_serial_probe_earlyprintk(struct platform_device *pdev)
{
- arc_early_serial_console.index = pdev->id;
+ int dev_id = pdev->id < 0 ? 0 : pdev->id;
+ int rc;
- arc_uart_init_one(pdev, &arc_uart_ports[pdev->id]);
+ arc_early_serial_console.index = dev_id;
+
+ rc = arc_uart_init_one(pdev, dev_id);
+ if (rc)
+ panic("early console init failed\n");
arc_serial_console_setup(&arc_early_serial_console, NULL);
register_console(&arc_early_serial_console);
return 0;
}
-#else
-static int arc_serial_probe_earlyprintk(struct platform_device *pdev)
-{
- return -ENODEV;
-}
#endif /* CONFIG_SERIAL_ARC_CONSOLE */
static int arc_serial_probe(struct platform_device *pdev)
{
- struct arc_uart_port *uart;
- int rc;
+ int rc, dev_id;
+ struct device_node *np = pdev->dev.of_node;
- if (is_early_platform_device(pdev))
- return arc_serial_probe_earlyprintk(pdev);
+ /* no device tree device */
+ if (!np)
+ return -ENODEV;
- uart = &arc_uart_ports[pdev->id];
- rc = arc_uart_init_one(pdev, uart);
+ dev_id = of_alias_get_id(np, "serial");
+ if (dev_id < 0) {
+ dev_err(&pdev->dev, "failed to get alias id: %d\n", dev_id);
+ return dev_id;
+ }
+
+ rc = arc_uart_init_one(pdev, dev_id);
if (rc)
return rc;
- return uart_add_one_port(&arc_uart_driver, &uart->port);
+ rc = uart_add_one_port(&arc_uart_driver, &arc_uart_ports[dev_id].port);
+ return rc;
}
static int arc_serial_remove(struct platform_device *pdev)
@@ -695,16 +713,32 @@
return 0;
}
+static const struct of_device_id arc_uart_dt_ids[] = {
+ { .compatible = "snps,arc-uart" },
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, arc_uart_dt_ids);
+
static struct platform_driver arc_platform_driver = {
.probe = arc_serial_probe,
.remove = arc_serial_remove,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
+ .of_match_table = arc_uart_dt_ids,
},
};
#ifdef CONFIG_SERIAL_ARC_CONSOLE
+
+static struct platform_driver early_arc_platform_driver __initdata = {
+ .probe = arc_serial_probe_earlyprintk,
+ .remove = arc_serial_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
/*
* Register an early platform driver of "earlyprintk" class.
* ARCH platform code installs the driver and probes the early devices
@@ -712,7 +746,7 @@
* or it could be done independently, for all "earlyprintk" class drivers.
* [see arch/arc/plat-arcfpga/platform.c]
*/
-early_platform_init("earlyprintk", &arc_platform_driver);
+early_platform_init("earlyprintk", &early_arc_platform_driver);
#endif /* CONFIG_SERIAL_ARC_CONSOLE */
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 922e85a..d4a7c24 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -774,14 +774,14 @@
* uart_start(), which takes the lock.
*/
spin_unlock(&port->lock);
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(&port->state->port);
spin_lock(&port->lock);
}
static void atmel_rx_from_dma(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct atmel_dma_buffer *pdc;
int rx_idx = atmel_port->pdc_rx_idx;
unsigned int head;
@@ -820,7 +820,8 @@
*/
count = head - tail;
- tty_insert_flip_string(tty, pdc->buf + pdc->ofs, count);
+ tty_insert_flip_string(tport, pdc->buf + pdc->ofs,
+ count);
dma_sync_single_for_device(port->dev, pdc->dma_addr,
pdc->dma_size, DMA_FROM_DEVICE);
@@ -848,7 +849,7 @@
* uart_start(), which takes the lock.
*/
spin_unlock(&port->lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
spin_lock(&port->lock);
UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index c76a2260..719594e 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -235,14 +235,13 @@
*/
static void bcm_uart_do_rx(struct uart_port *port)
{
- struct tty_struct *tty;
+ struct tty_port *port = &port->state->port;
unsigned int max_count;
/* limit number of char read in interrupt, should not be
* higher than fifo size anyway since we're much faster than
* serial port */
max_count = 32;
- tty = port->state->port.tty;
do {
unsigned int iestat, c, cstat;
char flag;
@@ -261,7 +260,7 @@
bcm_uart_writel(port, val, UART_CTL_REG);
port->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
}
if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY)))
@@ -300,11 +299,11 @@
if ((cstat & port->ignore_status_mask) == 0)
- tty_insert_flip_char(tty, c, flag);
+ tty_insert_flip_char(port, c, flag);
} while (--max_count);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
/*
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index f5d1173..487c173 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -149,7 +149,7 @@
static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
{
struct sport_uart_port *up = dev_id;
- struct tty_struct *tty = up->port.state->port.tty;
+ struct tty_port *port = &up->port.state->port;
unsigned int ch;
spin_lock(&up->port.lock);
@@ -159,9 +159,10 @@
up->port.icount.rx++;
if (!uart_handle_sysrq_char(&up->port, ch))
- tty_insert_flip_char(tty, ch, TTY_NORMAL);
+ tty_insert_flip_char(port, ch, TTY_NORMAL);
}
- tty_flip_buffer_push(tty);
+ /* XXX this won't deadlock with lowlat? */
+ tty_flip_buffer_push(port);
spin_unlock(&up->port.lock);
@@ -182,7 +183,6 @@
static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
{
struct sport_uart_port *up = dev_id;
- struct tty_struct *tty = up->port.state->port.tty;
unsigned int stat = SPORT_GET_STAT(up);
spin_lock(&up->port.lock);
@@ -190,7 +190,7 @@
/* Overflow in RX FIFO */
if (stat & ROVF) {
up->port.icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&up->port.state->port, 0, TTY_OVERRUN);
SPORT_PUT_STAT(up, ROVF); /* Clear ROVF bit */
}
/* These should not happen */
@@ -205,6 +205,8 @@
SSYNC();
spin_unlock(&up->port.lock);
+ /* XXX we don't push the overrun bit to TTY? */
+
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index 2e2b2c1..12dceda 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -223,7 +223,6 @@
#ifdef CONFIG_SERIAL_BFIN_PIO
static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
{
- struct tty_struct *tty = NULL;
unsigned int status, ch, flg;
static struct timeval anomaly_start = { .tv_sec = 0 };
@@ -242,11 +241,9 @@
return;
}
- if (!uart->port.state || !uart->port.state->port.tty)
+ if (!uart->port.state)
return;
#endif
- tty = uart->port.state->port.tty;
-
if (ANOMALY_05000363) {
/* The BF533 (and BF561) family of processors have a nice anomaly
* where they continuously generate characters for a "single" break.
@@ -325,7 +322,7 @@
uart_insert_char(&uart->port, status, OE, ch, flg);
ignore_char:
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&uart->port.state->port);
}
static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
@@ -426,7 +423,6 @@
static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
{
- struct tty_struct *tty = uart->port.state->port.tty;
int i, flg, status;
status = UART_GET_LSR(uart);
@@ -471,7 +467,7 @@
}
dma_ignore_char:
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&uart->port.state->port);
}
void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart)
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index 3fd2526..bfb1796 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -85,12 +85,8 @@
static irqreturn_t uart_clps711x_int_rx(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
unsigned int status, ch, flg;
- if (!tty)
- return IRQ_HANDLED;
-
for (;;) {
status = clps_readl(SYSFLG(port));
if (status & SYSFLG_URXFE)
@@ -130,9 +126,7 @@
uart_insert_char(port, status, UARTDR_OVERR, ch, flg);
}
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->state->port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index ad0caf17..97f4e18 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -245,7 +245,7 @@
int i;
unsigned char ch;
u8 *cp;
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port;
cbd_t __iomem *bdp;
u16 status;
@@ -276,7 +276,7 @@
/* If we have not enough room in tty flip buffer, then we try
* later, which will be the next rx-interrupt or a timeout
*/
- if(tty_buffer_request_room(tty, i) < i) {
+ if (tty_buffer_request_room(tport, i) < i) {
printk(KERN_WARNING "No room in flip buffer\n");
return;
}
@@ -302,7 +302,7 @@
}
#endif
error_return:
- tty_insert_flip_char(tty, ch, flg);
+ tty_insert_flip_char(tport, ch, flg);
} /* End while (i--) */
@@ -322,7 +322,7 @@
pinfo->rx_cur = bdp;
/* activate BH processing */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
return;
@@ -507,7 +507,7 @@
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
if (baud < HW_BUF_SPD_THRESHOLD ||
- (pinfo->port.state && pinfo->port.state->port.tty->low_latency))
+ (pinfo->port.state && pinfo->port.state->port.low_latency))
pinfo->rx_fifosize = 1;
else
pinfo->rx_fifosize = RX_BUF_SIZE;
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 35ee6a2..5f37c31 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -1760,8 +1760,7 @@
info->icount.rx++;
} else {
- struct tty_struct *tty = info->port.tty;
- tty_insert_flip_char(tty, data, flag);
+ tty_insert_flip_char(&info->port, data, flag);
info->icount.rx++;
}
@@ -2105,22 +2104,15 @@
static void flush_to_flip_buffer(struct e100_serial *info)
{
- struct tty_struct *tty;
struct etrax_recv_buffer *buffer;
unsigned long flags;
local_irq_save(flags);
- tty = info->port.tty;
-
- if (!tty) {
- local_irq_restore(flags);
- return;
- }
while ((buffer = info->first_recv_buffer) != NULL) {
unsigned int count = buffer->length;
- tty_insert_flip_string(tty, buffer->buffer, count);
+ tty_insert_flip_string(&info->port, buffer->buffer, count);
info->recv_cnt -= count;
if (count == buffer->length) {
@@ -2139,7 +2131,7 @@
local_irq_restore(flags);
/* This includes a check for low-latency */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&info->port);
}
static void check_flush_timeout(struct e100_serial *info)
@@ -2275,12 +2267,6 @@
struct e100_serial * handle_ser_rx_interrupt_no_dma(struct e100_serial *info)
{
unsigned long data_read;
- struct tty_struct *tty = info->port.tty;
-
- if (!tty) {
- printk("!NO TTY!\n");
- return info;
- }
/* Read data and status at the same time */
data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]);
@@ -2338,8 +2324,7 @@
data_in, data_read);
char flag = TTY_NORMAL;
if (info->errorcode == ERRCODE_INSERT_BREAK) {
- struct tty_struct *tty = info->port.tty;
- tty_insert_flip_char(tty, 0, flag);
+ tty_insert_flip_char(&info->port, 0, flag);
info->icount.rx++;
}
@@ -2353,7 +2338,7 @@
info->icount.frame++;
flag = TTY_FRAME;
}
- tty_insert_flip_char(tty, data, flag);
+ tty_insert_flip_char(&info->port, data, flag);
info->errorcode = 0;
}
info->break_detected_cnt = 0;
@@ -2369,7 +2354,7 @@
log_int(rdpc(), 0, 0);
}
);
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(&info->port,
IO_EXTRACT(R_SERIAL0_READ, data_in, data_read),
TTY_NORMAL);
} else {
@@ -2384,7 +2369,7 @@
goto more_data;
}
- tty_flip_buffer_push(info->port.tty);
+ tty_flip_buffer_push(&info->port);
return info;
}
@@ -3137,7 +3122,7 @@
/* first some sanity checks */
- if (!tty || !info->xmit.buf)
+ if (!info->xmit.buf)
return 0;
#ifdef SERIAL_DEBUG_DATA
@@ -3464,7 +3449,7 @@
info->type = new_serial.type;
info->close_delay = new_serial.close_delay;
info->closing_wait = new_serial.closing_wait;
- info->port.tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
check_and_exit:
if (info->flags & ASYNC_INITIALIZED) {
@@ -4108,7 +4093,7 @@
tty->driver_data = info;
info->port.tty = tty;
- tty->low_latency = !!(info->flags & ASYNC_LOW_LATENCY);
+ info->port.low_latency = !!(info->flags & ASYNC_LOW_LATENCY);
/*
* If the port is in the middle of closing, bail out now
diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c
index 6491b86..2f2b2e5 100644
--- a/drivers/tty/serial/dz.c
+++ b/drivers/tty/serial/dz.c
@@ -187,7 +187,6 @@
{
struct uart_port *uport;
struct dz_port *dport = &mux->dport[0];
- struct tty_struct *tty = NULL;
struct uart_icount *icount;
int lines_rx[DZ_NB_PORT] = { [0 ... DZ_NB_PORT - 1] = 0 };
unsigned char ch, flag;
@@ -197,7 +196,6 @@
while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) {
dport = &mux->dport[LINE(status)];
uport = &dport->port;
- tty = uport->state->port.tty; /* point to the proper dev */
ch = UCHAR(status); /* grab the char */
flag = TTY_NORMAL;
@@ -249,7 +247,7 @@
}
for (i = 0; i < DZ_NB_PORT; i++)
if (lines_rx[i])
- tty_flip_buffer_push(mux->dport[i].port.state->port.tty);
+ tty_flip_buffer_push(&mux->dport[i].port.state->port);
}
/*
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index a8cbb26..7d199c8 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -81,6 +81,7 @@
struct uart_port port;
unsigned int txirq;
struct clk *clk;
+ struct efm32_uart_pdata pdata;
};
#define to_efm_port(_port) container_of(_port, struct efm32_uart_port, port)
#define efm_debug(efm_port, format, arg...) \
@@ -194,8 +195,7 @@
/* not possible without fiddling with gpios */
}
-static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port,
- struct tty_struct *tty)
+static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port)
{
struct uart_port *port = &efm_port->port;
@@ -237,8 +237,8 @@
rxdata & UARTn_RXDATAX_RXDATA__MASK))
continue;
- if (tty && (rxdata & port->ignore_status_mask) == 0)
- tty_insert_flip_char(tty,
+ if ((rxdata & port->ignore_status_mask) == 0)
+ tty_insert_flip_char(&port->state->port,
rxdata & UARTn_RXDATAX_RXDATA__MASK, flag);
}
}
@@ -249,15 +249,13 @@
u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
int handled = IRQ_NONE;
struct uart_port *port = &efm_port->port;
- struct tty_struct *tty;
+ struct tty_port *tport = &port->state->port;
spin_lock(&port->lock);
- tty = tty_kref_get(port->state->port.tty);
-
if (irqflag & UARTn_IF_RXDATAV) {
efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC);
- efm32_uart_rx_chars(efm_port, tty);
+ efm32_uart_rx_chars(efm_port);
handled = IRQ_HANDLED;
}
@@ -265,16 +263,12 @@
if (irqflag & UARTn_IF_RXOF) {
efm32_uart_write32(efm_port, UARTn_IF_RXOF, UARTn_IFC);
port->icount.overrun++;
- if (tty)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
handled = IRQ_HANDLED;
}
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(tport);
spin_unlock(&port->lock);
@@ -300,13 +294,8 @@
static int efm32_uart_startup(struct uart_port *port)
{
struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 location = 0;
- struct efm32_uart_pdata *pdata = dev_get_platdata(port->dev);
int ret;
- if (pdata)
- location = UARTn_ROUTE_LOCATION(pdata->location);
-
ret = clk_enable(efm_port->clk);
if (ret) {
efm_debug(efm_port, "failed to enable clk\n");
@@ -315,7 +304,9 @@
port->uartclk = clk_get_rate(efm_port->clk);
/* Enable pins at configured location */
- efm32_uart_write32(efm_port, location | UARTn_ROUTE_RXPEN | UARTn_ROUTE_TXPEN,
+ efm32_uart_write32(efm_port,
+ UARTn_ROUTE_LOCATION(efm_port->pdata.location) |
+ UARTn_ROUTE_RXPEN | UARTn_ROUTE_TXPEN,
UARTn_ROUTE);
ret = request_irq(port->irq, efm32_uart_rxirq, 0,
@@ -674,11 +665,24 @@
struct efm32_uart_port *efm_port)
{
struct device_node *np = pdev->dev.of_node;
+ u32 location;
int ret;
if (!np)
return 1;
+ ret = of_property_read_u32(np, "location", &location);
+ if (!ret) {
+ if (location > 5) {
+ dev_err(&pdev->dev, "invalid location\n");
+ return -EINVAL;
+ }
+ efm_debug(efm_port, "using location %u\n", location);
+ efm_port->pdata.location = location;
+ } else {
+ efm_debug(efm_port, "fall back to location 0\n");
+ }
+
ret = of_alias_get_id(np, "serial");
if (ret < 0) {
dev_err(&pdev->dev, "failed to get alias id: %d\n", ret);
@@ -738,10 +742,16 @@
efm_port->port.flags = UPF_BOOT_AUTOCONF;
ret = efm32_uart_probe_dt(pdev, efm_port);
- if (ret > 0)
+ if (ret > 0) {
/* not created by device tree */
+ const struct efm32_uart_pdata *pdata = dev_get_platdata(&pdev->dev);
+
efm_port->port.line = pdev->id;
+ if (pdata)
+ efm_port->pdata = *pdata;
+ }
+
if (efm_port->port.line >= 0 &&
efm_port->port.line < ARRAY_SIZE(efm32_uart_ports))
efm32_uart_ports[efm_port->port.line] = efm_port;
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index 72b6334..bc9e6b01 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -734,7 +734,7 @@
static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
{
short int count, rcv_buff;
- struct tty_struct *tty = icom_port->uart_port.state->port.tty;
+ struct tty_port *port = &icom_port->uart_port.state->port;
unsigned short int status;
struct uart_icount *icount;
unsigned long offset;
@@ -761,7 +761,7 @@
/* Block copy all but the last byte as this may have status */
if (count > 0) {
first = icom_port->recv_buf[offset];
- tty_insert_flip_string(tty, icom_port->recv_buf + offset, count - 1);
+ tty_insert_flip_string(port, icom_port->recv_buf + offset, count - 1);
}
icount = &icom_port->uart_port.icount;
@@ -812,7 +812,7 @@
}
- tty_insert_flip_char(tty, *(icom_port->recv_buf + offset + count - 1), flag);
+ tty_insert_flip_char(port, *(icom_port->recv_buf + offset + count - 1), flag);
if (status & SA_FLAGS_OVERRUN)
/*
@@ -820,7 +820,7 @@
* reported immediately, and doesn't
* affect the current character
*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
ignore_char:
icom_port->statStg->rcv[rcv_buff].flags = 0;
icom_port->statStg->rcv[rcv_buff].leLength = 0;
@@ -834,7 +834,7 @@
status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
}
icom_port->next_rcv = rcv_buff;
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
static void process_interrupt(u16 port_int_reg,
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 8cb6d8d..68d7ce99 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -481,7 +481,6 @@
unsigned char *tx_buffer;
tx_buffer = ifx_dev->tx_buffer;
- memset(tx_buffer, 0, IFX_SPI_TRANSFER_SIZE);
/* make room for required SPI header */
tx_buffer += IFX_SPI_HEADER_OVERHEAD;
@@ -615,7 +614,7 @@
tty->driver_data = ifx_dev;
/* allows flip string push from int context */
- tty->low_latency = 1;
+ port->low_latency = 1;
/* set flag to allows data transfer */
set_bit(IFX_SPI_STATE_IO_AVAILABLE, &ifx_dev->flags);
@@ -670,12 +669,8 @@
static void ifx_spi_insert_flip_string(struct ifx_spi_device *ifx_dev,
unsigned char *chars, size_t size)
{
- struct tty_struct *tty = tty_port_tty_get(&ifx_dev->tty_port);
- if (!tty)
- return;
- tty_insert_flip_string(tty, chars, size);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&ifx_dev->tty_port, chars, size);
+ tty_flip_buffer_push(&ifx_dev->tty_port);
}
/**
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 5981912..a220f77 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -48,8 +48,8 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <asm/irq.h>
#include <linux/platform_data/serial-imx.h>
@@ -73,102 +73,102 @@
#define IMX21_UTS 0xb4 /* UART Test Register on all other i.mx*/
/* UART Control Register Bit Fields.*/
-#define URXD_CHARRDY (1<<15)
-#define URXD_ERR (1<<14)
-#define URXD_OVRRUN (1<<13)
-#define URXD_FRMERR (1<<12)
-#define URXD_BRK (1<<11)
-#define URXD_PRERR (1<<10)
-#define UCR1_ADEN (1<<15) /* Auto detect interrupt */
-#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
-#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
-#define UCR1_IDEN (1<<12) /* Idle condition interrupt */
-#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */
-#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */
-#define UCR1_IREN (1<<7) /* Infrared interface enable */
-#define UCR1_TXMPTYEN (1<<6) /* Transimitter empty interrupt enable */
-#define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */
-#define UCR1_SNDBRK (1<<4) /* Send break */
-#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */
-#define IMX1_UCR1_UARTCLKEN (1<<2) /* UART clock enabled, i.mx1 only */
-#define UCR1_DOZE (1<<1) /* Doze */
-#define UCR1_UARTEN (1<<0) /* UART enabled */
-#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */
-#define UCR2_IRTS (1<<14) /* Ignore RTS pin */
-#define UCR2_CTSC (1<<13) /* CTS pin control */
-#define UCR2_CTS (1<<12) /* Clear to send */
-#define UCR2_ESCEN (1<<11) /* Escape enable */
-#define UCR2_PREN (1<<8) /* Parity enable */
-#define UCR2_PROE (1<<7) /* Parity odd/even */
-#define UCR2_STPB (1<<6) /* Stop */
-#define UCR2_WS (1<<5) /* Word size */
-#define UCR2_RTSEN (1<<4) /* Request to send interrupt enable */
-#define UCR2_ATEN (1<<3) /* Aging Timer Enable */
-#define UCR2_TXEN (1<<2) /* Transmitter enabled */
-#define UCR2_RXEN (1<<1) /* Receiver enabled */
-#define UCR2_SRST (1<<0) /* SW reset */
-#define UCR3_DTREN (1<<13) /* DTR interrupt enable */
-#define UCR3_PARERREN (1<<12) /* Parity enable */
-#define UCR3_FRAERREN (1<<11) /* Frame error interrupt enable */
-#define UCR3_DSR (1<<10) /* Data set ready */
-#define UCR3_DCD (1<<9) /* Data carrier detect */
-#define UCR3_RI (1<<8) /* Ring indicator */
-#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */
-#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
-#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
-#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
-#define IMX21_UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select */
-#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */
-#define UCR3_BPEN (1<<0) /* Preset registers enable */
-#define UCR4_CTSTL_SHF 10 /* CTS trigger level shift */
-#define UCR4_CTSTL_MASK 0x3F /* CTS trigger is 6 bits wide */
-#define UCR4_INVR (1<<9) /* Inverted infrared reception */
-#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */
-#define UCR4_WKEN (1<<7) /* Wake interrupt enable */
-#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */
-#define UCR4_IRSC (1<<5) /* IR special case */
-#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */
-#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */
-#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */
-#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */
-#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */
-#define UFCR_DCEDTE (1<<6) /* DCE/DTE mode select */
-#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */
-#define UFCR_RFDIV_REG(x) (((x) < 7 ? 6 - (x) : 6) << 7)
-#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
-#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */
-#define USR1_RTSS (1<<14) /* RTS pin status */
-#define USR1_TRDY (1<<13) /* Transmitter ready interrupt/dma flag */
-#define USR1_RTSD (1<<12) /* RTS delta */
-#define USR1_ESCF (1<<11) /* Escape seq interrupt flag */
-#define USR1_FRAMERR (1<<10) /* Frame error interrupt flag */
-#define USR1_RRDY (1<<9) /* Receiver ready interrupt/dma flag */
-#define USR1_TIMEOUT (1<<7) /* Receive timeout interrupt status */
-#define USR1_RXDS (1<<6) /* Receiver idle interrupt flag */
-#define USR1_AIRINT (1<<5) /* Async IR wake interrupt flag */
-#define USR1_AWAKE (1<<4) /* Aysnc wake interrupt flag */
-#define USR2_ADET (1<<15) /* Auto baud rate detect complete */
-#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */
-#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */
-#define USR2_IDLE (1<<12) /* Idle condition */
-#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */
-#define USR2_WAKE (1<<7) /* Wake */
-#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */
-#define USR2_TXDC (1<<3) /* Transmitter complete */
-#define USR2_BRCD (1<<2) /* Break condition */
-#define USR2_ORE (1<<1) /* Overrun error */
-#define USR2_RDR (1<<0) /* Recv data ready */
-#define UTS_FRCPERR (1<<13) /* Force parity error */
-#define UTS_LOOP (1<<12) /* Loop tx and rx */
-#define UTS_TXEMPTY (1<<6) /* TxFIFO empty */
-#define UTS_RXEMPTY (1<<5) /* RxFIFO empty */
-#define UTS_TXFULL (1<<4) /* TxFIFO full */
-#define UTS_RXFULL (1<<3) /* RxFIFO full */
-#define UTS_SOFTRST (1<<0) /* Software reset */
+#define URXD_CHARRDY (1<<15)
+#define URXD_ERR (1<<14)
+#define URXD_OVRRUN (1<<13)
+#define URXD_FRMERR (1<<12)
+#define URXD_BRK (1<<11)
+#define URXD_PRERR (1<<10)
+#define UCR1_ADEN (1<<15) /* Auto detect interrupt */
+#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
+#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
+#define UCR1_IDEN (1<<12) /* Idle condition interrupt */
+#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */
+#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */
+#define UCR1_IREN (1<<7) /* Infrared interface enable */
+#define UCR1_TXMPTYEN (1<<6) /* Transimitter empty interrupt enable */
+#define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */
+#define UCR1_SNDBRK (1<<4) /* Send break */
+#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */
+#define IMX1_UCR1_UARTCLKEN (1<<2) /* UART clock enabled, i.mx1 only */
+#define UCR1_DOZE (1<<1) /* Doze */
+#define UCR1_UARTEN (1<<0) /* UART enabled */
+#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */
+#define UCR2_IRTS (1<<14) /* Ignore RTS pin */
+#define UCR2_CTSC (1<<13) /* CTS pin control */
+#define UCR2_CTS (1<<12) /* Clear to send */
+#define UCR2_ESCEN (1<<11) /* Escape enable */
+#define UCR2_PREN (1<<8) /* Parity enable */
+#define UCR2_PROE (1<<7) /* Parity odd/even */
+#define UCR2_STPB (1<<6) /* Stop */
+#define UCR2_WS (1<<5) /* Word size */
+#define UCR2_RTSEN (1<<4) /* Request to send interrupt enable */
+#define UCR2_ATEN (1<<3) /* Aging Timer Enable */
+#define UCR2_TXEN (1<<2) /* Transmitter enabled */
+#define UCR2_RXEN (1<<1) /* Receiver enabled */
+#define UCR2_SRST (1<<0) /* SW reset */
+#define UCR3_DTREN (1<<13) /* DTR interrupt enable */
+#define UCR3_PARERREN (1<<12) /* Parity enable */
+#define UCR3_FRAERREN (1<<11) /* Frame error interrupt enable */
+#define UCR3_DSR (1<<10) /* Data set ready */
+#define UCR3_DCD (1<<9) /* Data carrier detect */
+#define UCR3_RI (1<<8) /* Ring indicator */
+#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */
+#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
+#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
+#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
+#define IMX21_UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select */
+#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */
+#define UCR3_BPEN (1<<0) /* Preset registers enable */
+#define UCR4_CTSTL_SHF 10 /* CTS trigger level shift */
+#define UCR4_CTSTL_MASK 0x3F /* CTS trigger is 6 bits wide */
+#define UCR4_INVR (1<<9) /* Inverted infrared reception */
+#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */
+#define UCR4_WKEN (1<<7) /* Wake interrupt enable */
+#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */
+#define UCR4_IRSC (1<<5) /* IR special case */
+#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */
+#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */
+#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */
+#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */
+#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */
+#define UFCR_DCEDTE (1<<6) /* DCE/DTE mode select */
+#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */
+#define UFCR_RFDIV_REG(x) (((x) < 7 ? 6 - (x) : 6) << 7)
+#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
+#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */
+#define USR1_RTSS (1<<14) /* RTS pin status */
+#define USR1_TRDY (1<<13) /* Transmitter ready interrupt/dma flag */
+#define USR1_RTSD (1<<12) /* RTS delta */
+#define USR1_ESCF (1<<11) /* Escape seq interrupt flag */
+#define USR1_FRAMERR (1<<10) /* Frame error interrupt flag */
+#define USR1_RRDY (1<<9) /* Receiver ready interrupt/dma flag */
+#define USR1_TIMEOUT (1<<7) /* Receive timeout interrupt status */
+#define USR1_RXDS (1<<6) /* Receiver idle interrupt flag */
+#define USR1_AIRINT (1<<5) /* Async IR wake interrupt flag */
+#define USR1_AWAKE (1<<4) /* Aysnc wake interrupt flag */
+#define USR2_ADET (1<<15) /* Auto baud rate detect complete */
+#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */
+#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */
+#define USR2_IDLE (1<<12) /* Idle condition */
+#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */
+#define USR2_WAKE (1<<7) /* Wake */
+#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */
+#define USR2_TXDC (1<<3) /* Transmitter complete */
+#define USR2_BRCD (1<<2) /* Break condition */
+#define USR2_ORE (1<<1) /* Overrun error */
+#define USR2_RDR (1<<0) /* Recv data ready */
+#define UTS_FRCPERR (1<<13) /* Force parity error */
+#define UTS_LOOP (1<<12) /* Loop tx and rx */
+#define UTS_TXEMPTY (1<<6) /* TxFIFO empty */
+#define UTS_RXEMPTY (1<<5) /* RxFIFO empty */
+#define UTS_TXFULL (1<<4) /* TxFIFO full */
+#define UTS_RXFULL (1<<3) /* RxFIFO full */
+#define UTS_SOFTRST (1<<0) /* Software reset */
/* We've been assigned a range on the "Low-density serial ports" major */
-#define SERIAL_IMX_MAJOR 207
-#define MINOR_START 16
+#define SERIAL_IMX_MAJOR 207
+#define MINOR_START 16
#define DEV_NAME "ttymxc"
/*
@@ -199,7 +199,7 @@
struct uart_port port;
struct timer_list timer;
unsigned int old_status;
- int txirq,rxirq,rtsirq;
+ int txirq, rxirq, rtsirq;
unsigned int have_rtscts:1;
unsigned int use_irda:1;
unsigned int irda_inv_rx:1;
@@ -397,7 +397,7 @@
unsigned long temp;
temp = readl(sport->port.membase + UCR2);
- writel(temp &~ UCR2_RXEN, sport->port.membase + UCR2);
+ writel(temp & ~UCR2_RXEN, sport->port.membase + UCR2);
}
/*
@@ -490,9 +490,8 @@
struct circ_buf *xmit = &sport->port.state->xmit;
unsigned long flags;
- spin_lock_irqsave(&sport->port.lock,flags);
- if (sport->port.x_char)
- {
+ spin_lock_irqsave(&sport->port.lock, flags);
+ if (sport->port.x_char) {
/* Send next char */
writel(sport->port.x_char, sport->port.membase + URTX0);
goto out;
@@ -509,18 +508,18 @@
uart_write_wakeup(&sport->port);
out:
- spin_unlock_irqrestore(&sport->port.lock,flags);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t imx_rxint(int irq, void *dev_id)
{
struct imx_port *sport = dev_id;
- unsigned int rx,flg,ignored = 0;
- struct tty_struct *tty = sport->port.state->port.tty;
+ unsigned int rx, flg, ignored = 0;
+ struct tty_port *port = &sport->port.state->port;
unsigned long flags, temp;
- spin_lock_irqsave(&sport->port.lock,flags);
+ spin_lock_irqsave(&sport->port.lock, flags);
while (readl(sport->port.membase + USR2) & USR2_RDR) {
flg = TTY_NORMAL;
@@ -570,12 +569,12 @@
#endif
}
- tty_insert_flip_char(tty, rx, flg);
+ tty_insert_flip_char(port, rx, flg);
}
out:
- spin_unlock_irqrestore(&sport->port.lock,flags);
- tty_flip_buffer_push(tty);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+ tty_flip_buffer_push(port);
return IRQ_HANDLED;
}
@@ -654,7 +653,7 @@
temp = readl(sport->port.membase + UCR1) & ~UCR1_SNDBRK;
- if ( break_state != 0 )
+ if (break_state != 0)
temp |= UCR1_SNDBRK;
writel(temp, sport->port.membase + UCR1);
@@ -696,8 +695,8 @@
temp |= UCR4_IRSC;
/* set the trigger level for CTS */
- temp &= ~(UCR4_CTSTL_MASK<< UCR4_CTSTL_SHF);
- temp |= CTSTL<< UCR4_CTSTL_SHF;
+ temp &= ~(UCR4_CTSTL_MASK << UCR4_CTSTL_SHF);
+ temp |= CTSTL << UCR4_CTSTL_SHF;
writel(temp & ~UCR4_DREN, sport->port.membase + UCR4);
@@ -799,7 +798,7 @@
* Enable modem status interrupts
*/
imx_enable_ms(&sport->port);
- spin_unlock_irqrestore(&sport->port.lock,flags);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
if (USE_IRDA(sport)) {
struct imxuart_platform_data *pdata;
@@ -909,7 +908,7 @@
ucr2 = UCR2_SRST | UCR2_IRTS;
if (termios->c_cflag & CRTSCTS) {
- if( sport->have_rtscts ) {
+ if (sport->have_rtscts) {
ucr2 &= ~UCR2_IRTS;
ucr2 |= UCR2_CTSC;
} else {
@@ -969,12 +968,12 @@
writel(old_ucr1 & ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN),
sport->port.membase + UCR1);
- while ( !(readl(sport->port.membase + USR2) & USR2_TXDC))
+ while (!(readl(sport->port.membase + USR2) & USR2_TXDC))
barrier();
/* then, disable everything */
old_txrxen = readl(sport->port.membase + UCR2);
- writel(old_txrxen & ~( UCR2_TXEN | UCR2_RXEN),
+ writel(old_txrxen & ~(UCR2_TXEN | UCR2_RXEN),
sport->port.membase + UCR2);
old_txrxen &= (UCR2_TXEN | UCR2_RXEN);
@@ -1255,7 +1254,7 @@
if (readl(sport->port.membase + UCR1) & UCR1_UARTEN) {
/* ok, the port was enabled */
- unsigned int ucr2, ubir,ubmr, uartclk;
+ unsigned int ucr2, ubir, ubmr, uartclk;
unsigned int baud_raw;
unsigned int ucfr_rfdiv;
@@ -1301,8 +1300,8 @@
*baud = (baud_raw + 50) / 100 * 100;
}
- if(*baud != baud_raw)
- printk(KERN_INFO "Serial: Console IMX rounded baud rate from %d to %d\n",
+ if (*baud != baud_raw)
+ pr_info("Console IMX rounded baud rate from %d to %d\n",
baud_raw, *baud);
}
}
@@ -1324,7 +1323,7 @@
if (co->index == -1 || co->index >= ARRAY_SIZE(imx_ports))
co->index = 0;
sport = imx_ports[co->index];
- if(sport == NULL)
+ if (sport == NULL)
return -ENODEV;
if (options)
@@ -1462,7 +1461,7 @@
struct resource *res;
struct pinctrl *pinctrl;
- sport = kzalloc(sizeof(*sport), GFP_KERNEL);
+ sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL);
if (!sport)
return -ENOMEM;
@@ -1470,19 +1469,15 @@
if (ret > 0)
serial_imx_probe_pdata(sport, pdev);
else if (ret < 0)
- goto free;
+ return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- goto free;
- }
+ if (!res)
+ return -ENODEV;
- base = ioremap(res->start, PAGE_SIZE);
- if (!base) {
- ret = -ENOMEM;
- goto free;
- }
+ base = devm_ioremap(&pdev->dev, res->start, PAGE_SIZE);
+ if (!base)
+ return -ENOMEM;
sport->port.dev = &pdev->dev;
sport->port.mapbase = res->start;
@@ -1504,21 +1499,21 @@
if (IS_ERR(pinctrl)) {
ret = PTR_ERR(pinctrl);
dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
- goto unmap;
+ return ret;
}
sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(sport->clk_ipg)) {
ret = PTR_ERR(sport->clk_ipg);
dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
- goto unmap;
+ return ret;
}
sport->clk_per = devm_clk_get(&pdev->dev, "per");
if (IS_ERR(sport->clk_per)) {
ret = PTR_ERR(sport->clk_per);
dev_err(&pdev->dev, "failed to get per clk: %d\n", ret);
- goto unmap;
+ return ret;
}
clk_prepare_enable(sport->clk_per);
@@ -1547,11 +1542,6 @@
clkput:
clk_disable_unprepare(sport->clk_per);
clk_disable_unprepare(sport->clk_ipg);
-unmap:
- iounmap(sport->port.membase);
-free:
- kfree(sport);
-
return ret;
}
@@ -1572,9 +1562,6 @@
if (pdata && pdata->exit)
pdata->exit(pdev);
- iounmap(sport->port.membase);
- kfree(sport);
-
return 0;
}
@@ -1596,7 +1583,7 @@
{
int ret;
- printk(KERN_INFO "Serial: IMX driver\n");
+ pr_info("Serial: IMX driver\n");
ret = uart_register_driver(&imx_reg);
if (ret)
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index d8f1d1d..6e4c715 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1000,7 +1000,7 @@
the_port->ignore_status_mask = N_ALL_INPUT;
- state->port.tty->low_latency = 1;
+ state->port.low_latency = 1;
if (iflag & IGNPAR)
the_port->ignore_status_mask &= ~(N_PARITY_ERROR
@@ -1393,7 +1393,6 @@
*/
static int receive_chars(struct uart_port *the_port)
{
- struct tty_struct *tty;
unsigned char ch[MAX_CHARS];
int read_count = 0, read_room, flip = 0;
struct uart_state *state = the_port->state;
@@ -1403,25 +1402,23 @@
/* Make sure all the pointers are "good" ones */
if (!state)
return 0;
- if (!state->port.tty)
- return 0;
if (!(port->ip_flags & INPUT_ENABLE))
return 0;
spin_lock_irqsave(&the_port->lock, pflags);
- tty = state->port.tty;
read_count = do_read(the_port, ch, MAX_CHARS);
if (read_count > 0) {
flip = 1;
- read_room = tty_insert_flip_string(tty, ch, read_count);
+ read_room = tty_insert_flip_string(&state->port, ch,
+ read_count);
the_port->icount.rx += read_count;
}
spin_unlock_irqrestore(&the_port->lock, pflags);
if (flip)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&state->port);
return read_count;
}
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 3e7da10..e2520ab 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -1740,7 +1740,7 @@
the_port->ignore_status_mask = N_ALL_INPUT;
- state->port.tty->low_latency = 1;
+ state->port.low_latency = 1;
if (iflag & IGNPAR)
the_port->ignore_status_mask &= ~(N_PARITY_ERROR
@@ -2340,7 +2340,6 @@
*/
static void receive_chars(struct uart_port *the_port)
{
- struct tty_struct *tty;
unsigned char ch[IOC4_MAX_CHARS];
int read_count, request_count = IOC4_MAX_CHARS;
struct uart_icount *icount;
@@ -2350,26 +2349,23 @@
/* Make sure all the pointers are "good" ones */
if (!state)
return;
- if (!state->port.tty)
- return;
spin_lock_irqsave(&the_port->lock, pflags);
- tty = state->port.tty;
- request_count = tty_buffer_request_room(tty, IOC4_MAX_CHARS);
+ request_count = tty_buffer_request_room(&state->port, IOC4_MAX_CHARS);
if (request_count > 0) {
icount = &the_port->icount;
read_count = do_read(the_port, ch, request_count);
if (read_count > 0) {
- tty_insert_flip_string(tty, ch, read_count);
+ tty_insert_flip_string(&state->port, ch, read_count);
icount->rx += read_count;
}
}
spin_unlock_irqrestore(&the_port->lock, pflags);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&state->port);
}
/**
@@ -2883,6 +2879,7 @@
/* error exits that give back resources */
out5:
ioc4_serial_remove_one(idd);
+ return ret;
out4:
kfree(soft);
out3:
diff --git a/drivers/tty/serial/ip22zilog.c b/drivers/tty/serial/ip22zilog.c
index 7b1cda5..cb3c81e 100644
--- a/drivers/tty/serial/ip22zilog.c
+++ b/drivers/tty/serial/ip22zilog.c
@@ -248,17 +248,12 @@
#define Rx_BRK 0x0100 /* BREAK event software flag. */
#define Rx_SYS 0x0200 /* SysRq event software flag. */
-static struct tty_struct *ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
+static bool ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
struct zilog_channel *channel)
{
- struct tty_struct *tty;
unsigned char ch, flag;
unsigned int r1;
-
- tty = NULL;
- if (up->port.state != NULL &&
- up->port.state->port.tty != NULL)
- tty = up->port.state->port.tty;
+ bool push = up->port.state != NULL;
for (;;) {
ch = readb(&channel->control);
@@ -312,10 +307,10 @@
if (uart_handle_sysrq_char(&up->port, ch))
continue;
- if (tty)
+ if (push)
uart_insert_char(&up->port, r1, Rx_OVR, ch, flag);
}
- return tty;
+ return push;
}
static void ip22zilog_status_handle(struct uart_ip22zilog_port *up,
@@ -438,21 +433,20 @@
while (up) {
struct zilog_channel *channel
= ZILOG_CHANNEL_FROM_PORT(&up->port);
- struct tty_struct *tty;
unsigned char r3;
+ bool push = false;
spin_lock(&up->port.lock);
r3 = read_zsreg(channel, R3);
/* Channel A */
- tty = NULL;
if (r3 & (CHAEXT | CHATxIP | CHARxIP)) {
writeb(RES_H_IUS, &channel->control);
ZSDELAY();
ZS_WSYNC(channel);
if (r3 & CHARxIP)
- tty = ip22zilog_receive_chars(up, channel);
+ push = ip22zilog_receive_chars(up, channel);
if (r3 & CHAEXT)
ip22zilog_status_handle(up, channel);
if (r3 & CHATxIP)
@@ -460,22 +454,22 @@
}
spin_unlock(&up->port.lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&up->port.state->port);
/* Channel B */
up = up->next;
channel = ZILOG_CHANNEL_FROM_PORT(&up->port);
+ push = false;
spin_lock(&up->port.lock);
- tty = NULL;
if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) {
writeb(RES_H_IUS, &channel->control);
ZSDELAY();
ZS_WSYNC(channel);
if (r3 & CHBRxIP)
- tty = ip22zilog_receive_chars(up, channel);
+ push = ip22zilog_receive_chars(up, channel);
if (r3 & CHBEXT)
ip22zilog_status_handle(up, channel);
if (r3 & CHBTxIP)
@@ -483,8 +477,8 @@
}
spin_unlock(&up->port.lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&up->port.state->port);
up = up->next;
}
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 4c00c55..00f250a 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -521,6 +521,7 @@
{
struct jsm_board *bd;
struct tty_struct *tp;
+ struct tty_port *port;
u32 rmask;
u16 head;
u16 tail;
@@ -536,7 +537,8 @@
if (!ch)
return;
- tp = ch->uart_port.state->port.tty;
+ port = &ch->uart_port.state->port;
+ tp = port->tty;
bd = ch->ch_bd;
if(!bd)
@@ -600,7 +602,7 @@
return;
}
- len = tty_buffer_request_room(tp, data_len);
+ len = tty_buffer_request_room(port, data_len);
n = len;
/*
@@ -629,16 +631,16 @@
* format it likes.
*/
if (*(ch->ch_equeue +tail +i) & UART_LSR_BI)
- tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_BREAK);
+ tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_BREAK);
else if (*(ch->ch_equeue +tail +i) & UART_LSR_PE)
- tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_PARITY);
+ tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_PARITY);
else if (*(ch->ch_equeue +tail +i) & UART_LSR_FE)
- tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_FRAME);
+ tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_FRAME);
else
- tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
+ tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
}
} else {
- tty_insert_flip_string(tp, ch->ch_rqueue + tail, s) ;
+ tty_insert_flip_string(port, ch->ch_rqueue + tail, s);
}
tail += s;
n -= s;
@@ -652,7 +654,7 @@
spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
/* Tell the tty layer its okay to "eat" the data now */
- tty_flip_buffer_push(tp);
+ tty_flip_buffer_push(port);
jsm_dbg(IOCTL, &ch->ch_bd->pci_dev, "finish\n");
}
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index 6ac2b79..26a50b0 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -202,7 +202,6 @@
static void kgdb_nmi_tty_receiver(unsigned long data)
{
struct kgdb_nmi_tty_priv *priv = (void *)data;
- struct tty_struct *tty;
char ch;
tasklet_schedule(&priv->tlet);
@@ -210,16 +209,9 @@
if (likely(!kgdb_nmi_tty_enabled || !kfifo_len(&priv->fifo)))
return;
- /* Port is there, but tty might be hung up, check. */
- tty = tty_port_tty_get(kgdb_nmi_port);
- if (!tty)
- return;
-
while (kfifo_out(&priv->fifo, &ch, 1))
- tty_insert_flip_char(priv->port.tty, ch, TTY_NORMAL);
- tty_flip_buffer_push(priv->port.tty);
-
- tty_kref_put(tty);
+ tty_insert_flip_char(&priv->port, ch, TTY_NORMAL);
+ tty_flip_buffer_push(&priv->port);
}
static int kgdb_nmi_tty_activate(struct tty_port *port, struct tty_struct *tty)
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 02da071..15733da 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -162,21 +162,16 @@
static int
lqasc_rx_chars(struct uart_port *port)
{
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+ struct tty_port *tport = &port->state->port;
unsigned int ch = 0, rsr = 0, fifocnt;
- if (!tty) {
- dev_dbg(port->dev, "%s:tty is busy now", __func__);
- return -EBUSY;
- }
- fifocnt =
- ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+ fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
while (fifocnt--) {
u8 flag = TTY_NORMAL;
ch = ltq_r8(port->membase + LTQ_ASC_RBUF);
rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)
& ASCSTATE_ANY) | UART_DUMMY_UER_RX;
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
port->icount.rx++;
/*
@@ -208,7 +203,7 @@
}
if ((rsr & port->ignore_status_mask) == 0)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(tport, ch, flag);
if (rsr & ASCSTATE_ROE)
/*
@@ -216,11 +211,12 @@
* immediately, and doesn't affect the current
* character
*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
}
+
if (ch != 0)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(tport);
+
return 0;
}
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index 0e86bff..dffea6b 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -257,17 +257,8 @@
static void __serial_lpc32xx_rx(struct uart_port *port)
{
+ struct tty_port *tport = &port->state->port;
unsigned int tmp, flag;
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
-
- if (!tty) {
- /* Discard data: no tty available */
- while (!(readl(LPC32XX_HSUART_FIFO(port->membase)) &
- LPC32XX_HSU_RX_EMPTY))
- ;
-
- return;
- }
/* Read data from FIFO and push into terminal */
tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
@@ -281,15 +272,14 @@
LPC32XX_HSUART_IIR(port->membase));
port->icount.frame++;
flag = TTY_FRAME;
- tty_insert_flip_char(tty, 0, TTY_FRAME);
+ tty_insert_flip_char(tport, 0, TTY_FRAME);
}
- tty_insert_flip_char(tty, (tmp & 0xFF), flag);
+ tty_insert_flip_char(tport, (tmp & 0xFF), flag);
tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(tport);
}
static void __serial_lpc32xx_tx(struct uart_port *port)
@@ -332,7 +322,7 @@
static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+ struct tty_port *tport = &port->state->port;
u32 status;
spin_lock(&port->lock);
@@ -356,17 +346,14 @@
writel(LPC32XX_HSU_RX_OE_INT,
LPC32XX_HSUART_IIR(port->membase));
port->icount.overrun++;
- if (tty) {
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
+ tty_schedule_flip(tport);
}
/* Data received? */
if (status & (LPC32XX_HSU_RX_TIMEOUT_INT | LPC32XX_HSU_RX_TRIG_INT)) {
__serial_lpc32xx_rx(port);
- if (tty)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
}
/* Transmit data request? */
@@ -376,7 +363,6 @@
}
spin_unlock(&port->lock);
- tty_kref_put(tty);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index b13949a..bb1afa0 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -300,7 +300,7 @@
static void receive_chars(struct uart_sio_port *up, int *status)
{
- struct tty_struct *tty = up->port.state->port.tty;
+ struct tty_port *port = &up->port.state->port;
unsigned char ch;
unsigned char flag;
int max_count = 256;
@@ -355,7 +355,7 @@
if (uart_handle_sysrq_char(&up->port, ch))
goto ignore_char;
if ((*status & up->port.ignore_status_mask) == 0)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(port, ch, flag);
if (*status & UART_LSR_OE) {
/*
@@ -363,12 +363,12 @@
* immediately, and doesn't affect the current
* character.
*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
}
ignore_char:
*status = serial_in(up, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
}
static void transmit_chars(struct uart_sio_port *up)
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index 7ce3197..791e1df 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -311,8 +311,8 @@
}
}
- if (rxchars > 16 && s->port.state->port.tty != NULL) {
- tty_flip_buffer_push(s->port.state->port.tty);
+ if (rxchars > 16) {
+ tty_flip_buffer_push(&s->port.state->port);
rxchars = 0;
}
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
@@ -324,8 +324,8 @@
(!uart_circ_empty(xmit) &&
!uart_tx_stopped(&s->port))));
- if (rxchars > 0 && s->port.state->port.tty != NULL)
- tty_flip_buffer_push(s->port.state->port.tty);
+ if (rxchars > 0)
+ tty_flip_buffer_push(&s->port.state->port);
}
static irqreturn_t max3100_irq(int irqno, void *dev_id)
@@ -530,7 +530,7 @@
MAX3100_STATUS_OE;
/* we are sending char from a workqueue so enable */
- s->port.state->port.tty->low_latency = 1;
+ s->port.state->port.low_latency = 1;
if (s->poll_time > 0)
del_timer_sync(&s->timer);
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index a801f68..0c2422c 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -460,10 +460,6 @@
static void max310x_handle_rx(struct max310x_port *s, unsigned int rxlen)
{
unsigned int sts = 0, ch = 0, flag;
- struct tty_struct *tty = tty_port_tty_get(&s->port.state->port);
-
- if (!tty)
- return;
if (unlikely(rxlen >= MAX310X_FIFO_SIZE)) {
dev_warn(s->port.dev, "Possible RX FIFO overrun %d\n", rxlen);
@@ -516,9 +512,7 @@
ch, flag);
}
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_flip_buffer_push(&s->port.state->port);
}
static void max310x_handle_tx(struct max310x_port *s)
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index fcd56ab..e956377 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -23,6 +23,7 @@
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
@@ -55,6 +56,7 @@
struct uart_port port;
unsigned int sigs; /* Local copy of line sigs */
unsigned char imr; /* Local IMR mirror */
+ struct serial_rs485 rs485; /* RS485 settings */
};
/****************************************************************************/
@@ -101,6 +103,12 @@
{
struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
+ if (pp->rs485.flags & SER_RS485_ENABLED) {
+ /* Enable Transmitter */
+ writeb(MCFUART_UCR_TXENABLE, port->membase + MCFUART_UCR);
+ /* Manually assert RTS */
+ writeb(MCFUART_UOP_RTS, port->membase + MCFUART_UOP1);
+ }
pp->imr |= MCFUART_UIR_TXREADY;
writeb(pp->imr, port->membase + MCFUART_UIMR);
}
@@ -196,6 +204,7 @@
static void mcf_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
+ struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
unsigned long flags;
unsigned int baud, baudclk;
#if defined(CONFIG_M5272)
@@ -248,6 +257,11 @@
mr2 |= MCFUART_MR2_TXCTS;
}
+ if (pp->rs485.flags & SER_RS485_ENABLED) {
+ dev_dbg(port->dev, "Setting UART to RS485\n");
+ mr2 |= MCFUART_MR2_TXRTS;
+ }
+
spin_lock_irqsave(&port->lock, flags);
uart_update_timeout(port, termios->c_cflag, baud);
writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR);
@@ -310,7 +324,7 @@
uart_insert_char(port, status, MCFUART_USR_RXOVERRUN, ch, flag);
}
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(&port->state->port);
}
/****************************************************************************/
@@ -342,6 +356,10 @@
if (xmit->head == xmit->tail) {
pp->imr &= ~MCFUART_UIR_TXREADY;
writeb(pp->imr, port->membase + MCFUART_UIMR);
+ /* Disable TX to negate RTS automatically */
+ if (pp->rs485.flags & SER_RS485_ENABLED)
+ writeb(MCFUART_UCR_TXDISABLE,
+ port->membase + MCFUART_UCR);
}
}
@@ -418,6 +436,58 @@
/****************************************************************************/
+/* Enable or disable the RS485 support */
+static void mcf_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
+{
+ struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
+ unsigned long flags;
+ unsigned char mr1, mr2;
+
+ spin_lock_irqsave(&port->lock, flags);
+ /* Get mode registers */
+ mr1 = readb(port->membase + MCFUART_UMR);
+ mr2 = readb(port->membase + MCFUART_UMR);
+ if (rs485->flags & SER_RS485_ENABLED) {
+ dev_dbg(port->dev, "Setting UART to RS485\n");
+ /* Automatically negate RTS after TX completes */
+ mr2 |= MCFUART_MR2_TXRTS;
+ } else {
+ dev_dbg(port->dev, "Setting UART to RS232\n");
+ mr2 &= ~MCFUART_MR2_TXRTS;
+ }
+ writeb(mr1, port->membase + MCFUART_UMR);
+ writeb(mr2, port->membase + MCFUART_UMR);
+ pp->rs485 = *rs485;
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int mcf_ioctl(struct uart_port *port, unsigned int cmd,
+ unsigned long arg)
+{
+ switch (cmd) {
+ case TIOCSRS485: {
+ struct serial_rs485 rs485;
+ if (copy_from_user(&rs485, (struct serial_rs485 *)arg,
+ sizeof(struct serial_rs485)))
+ return -EFAULT;
+ mcf_config_rs485(port, &rs485);
+ break;
+ }
+ case TIOCGRS485: {
+ struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
+ if (copy_to_user((struct serial_rs485 *)arg, &pp->rs485,
+ sizeof(struct serial_rs485)))
+ return -EFAULT;
+ break;
+ }
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+/****************************************************************************/
+
/*
* Define the basic serial functions we support.
*/
@@ -438,6 +508,7 @@
.release_port = mcf_release_port,
.config_port = mcf_config_port,
.verify_port = mcf_verify_port,
+ .ioctl = mcf_ioctl,
};
static struct mcf_uart mcf_ports[4];
diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c
index 2c01344d..5f4765a 100644
--- a/drivers/tty/serial/mfd.c
+++ b/drivers/tty/serial/mfd.c
@@ -387,12 +387,9 @@
struct hsu_dma_buffer *dbuf = &up->rxbuf;
struct hsu_dma_chan *chan = up->rxc;
struct uart_port *port = &up->port;
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
int count;
- if (!tty)
- return;
-
/*
* First need to know how many is already transferred,
* then check if its a timeout DMA irq, and return
@@ -423,7 +420,7 @@
* explicitly set tail to 0. So head will
* always be greater than tail.
*/
- tty_insert_flip_string(tty, dbuf->buf, count);
+ tty_insert_flip_string(tport, dbuf->buf, count);
port->icount.rx += count;
dma_sync_single_for_device(up->port.dev, dbuf->dma_addr,
@@ -437,7 +434,7 @@
| (0x1 << 16)
| (0x1 << 24) /* timeout bit, see HSU Errata 1 */
);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
chan_writel(chan, HSU_CH_CR, 0x3);
@@ -460,13 +457,9 @@
static inline void receive_chars(struct uart_hsu_port *up, int *status)
{
- struct tty_struct *tty = up->port.state->port.tty;
unsigned int ch, flag;
unsigned int max_count = 256;
- if (!tty)
- return;
-
do {
ch = serial_in(up, UART_RX);
flag = TTY_NORMAL;
@@ -522,7 +515,7 @@
ignore_char:
*status = serial_in(up, UART_LSR);
} while ((*status & UART_LSR_DR) && max_count--);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&up->port.state->port);
}
static void transmit_chars(struct uart_hsu_port *up)
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 7c23c4f4..c0e1fad 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -941,7 +941,7 @@
static inline int
mpc52xx_uart_int_rx_chars(struct uart_port *port)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
unsigned char ch, flag;
unsigned short status;
@@ -986,20 +986,20 @@
out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
}
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(tport, ch, flag);
if (status & MPC52xx_PSC_SR_OE) {
/*
* Overrun is special, since it's
* reported immediately, and doesn't
* affect the current character
*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
port->icount.overrun++;
}
}
spin_unlock(&port->lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
spin_lock(&port->lock);
return psc_ops->raw_rx_rdy(port);
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 6a9c660..bc24f49 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -937,7 +937,7 @@
static int mpsc_rx_intr(struct mpsc_port_info *pi)
{
struct mpsc_rx_desc *rxre;
- struct tty_struct *tty = pi->port.state->port.tty;
+ struct tty_port *port = &pi->port.state->port;
u32 cmdstat, bytes_in, i;
int rc = 0;
u8 *bp;
@@ -968,10 +968,9 @@
}
#endif
/* Following use of tty struct directly is deprecated */
- if (unlikely(tty_buffer_request_room(tty, bytes_in)
- < bytes_in)) {
- if (tty->low_latency)
- tty_flip_buffer_push(tty);
+ if (tty_buffer_request_room(port, bytes_in) < bytes_in) {
+ if (port->low_latency)
+ tty_flip_buffer_push(port);
/*
* If this failed then we will throw away the bytes
* but must do so to clear interrupts.
@@ -1040,10 +1039,10 @@
| SDMA_DESC_CMDSTAT_FR
| SDMA_DESC_CMDSTAT_OR)))
&& !(cmdstat & pi->port.ignore_status_mask)) {
- tty_insert_flip_char(tty, *bp, flag);
+ tty_insert_flip_char(port, *bp, flag);
} else {
for (i=0; i<bytes_in; i++)
- tty_insert_flip_char(tty, *bp++, TTY_NORMAL);
+ tty_insert_flip_char(port, *bp++, TTY_NORMAL);
pi->port.icount.rx += bytes_in;
}
@@ -1081,7 +1080,7 @@
if ((readl(pi->sdma_base + SDMA_SDCM) & SDMA_SDCM_ERD) == 0)
mpsc_start_rx(pi);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
return rc;
}
diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c
index 58734d7e..f641c23 100644
--- a/drivers/tty/serial/mrst_max3110.c
+++ b/drivers/tty/serial/mrst_max3110.c
@@ -339,7 +339,7 @@
receive_chars(struct uart_max3110 *max, unsigned short *str, int len)
{
struct uart_port *port = &max->port;
- struct tty_struct *tty;
+ struct tty_port *tport;
char buf[M3110_RX_FIFO_DEPTH];
int r, w, usable;
@@ -347,9 +347,7 @@
if (!port->state)
return 0;
- tty = tty_port_tty_get(&port->state->port);
- if (!tty)
- return 0;
+ tport = &port->state->port;
for (r = 0, w = 0; r < len; r++) {
if (str[r] & MAX3110_BREAK &&
@@ -364,20 +362,17 @@
}
}
- if (!w) {
- tty_kref_put(tty);
+ if (!w)
return 0;
- }
for (r = 0; w; r += usable, w -= usable) {
- usable = tty_buffer_request_room(tty, w);
+ usable = tty_buffer_request_room(tport, w);
if (usable) {
- tty_insert_flip_string(tty, buf + r, usable);
+ tty_insert_flip_string(tport, buf + r, usable);
port->icount.rx += usable;
}
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(tport);
return r;
}
@@ -493,7 +488,7 @@
| WC_BAUD_DR2;
/* as we use thread to handle tx/rx, need set low latency */
- port->state->port.tty->low_latency = 1;
+ port->state->port.low_latency = 1;
if (max->irq) {
max->read_thread = NULL;
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 95fd39b..b11e997 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -91,14 +91,14 @@
static void handle_rx_dm(struct uart_port *port, unsigned int misr)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
unsigned int sr;
int count = 0;
struct msm_port *msm_port = UART_TO_MSM(port);
if ((msm_read(port, UART_SR) & UART_SR_OVERRUN)) {
port->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
msm_write(port, UART_CR_CMD_RESET_ERR, UART_CR);
}
@@ -132,12 +132,12 @@
port->icount.frame++;
/* TODO: handle sysrq */
- tty_insert_flip_string(tty, (char *) &c,
+ tty_insert_flip_string(tport, (char *)&c,
(count > 4) ? 4 : count);
count -= 4;
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
if (misr & (UART_IMR_RXSTALE))
msm_write(port, UART_CR_CMD_RESET_STALE_INT, UART_CR);
msm_write(port, 0xFFFFFF, UARTDM_DMRX);
@@ -146,7 +146,7 @@
static void handle_rx(struct uart_port *port)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
unsigned int sr;
/*
@@ -155,7 +155,7 @@
*/
if ((msm_read(port, UART_SR) & UART_SR_OVERRUN)) {
port->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
msm_write(port, UART_CR_CMD_RESET_ERR, UART_CR);
}
@@ -186,10 +186,10 @@
}
if (!uart_handle_sysrq_char(port, c))
- tty_insert_flip_char(tty, c, flag);
+ tty_insert_flip_char(tport, c, flag);
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
}
static void reset_dm_count(struct uart_port *port)
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
index 1fa9228..4a942c7 100644
--- a/drivers/tty/serial/msm_serial_hs.c
+++ b/drivers/tty/serial/msm_serial_hs.c
@@ -908,6 +908,7 @@
unsigned long flags;
unsigned int flush;
struct tty_struct *tty;
+ struct tty_port *port;
struct uart_port *uport;
struct msm_hs_port *msm_uport;
@@ -917,7 +918,8 @@
spin_lock_irqsave(&uport->lock, flags);
clk_enable(msm_uport->clk);
- tty = uport->state->port.tty;
+ port = &uport->state->port;
+ tty = port->tty;
msm_hs_write(uport, UARTDM_CR_ADDR, STALE_EVENT_DISABLE);
@@ -926,7 +928,7 @@
/* overflow is not connect to data in a FIFO */
if (unlikely((status & UARTDM_SR_OVERRUN_BMSK) &&
(uport->read_status_mask & CREAD))) {
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
uport->icount.buf_overrun++;
error_f = 1;
}
@@ -939,7 +941,7 @@
uport->icount.parity++;
error_f = 1;
if (uport->ignore_status_mask & IGNPAR)
- tty_insert_flip_char(tty, 0, TTY_PARITY);
+ tty_insert_flip_char(port, 0, TTY_PARITY);
}
if (error_f)
@@ -959,7 +961,7 @@
rx_count = msm_hs_read(uport, UARTDM_RX_TOTAL_SNAP_ADDR);
if (0 != (uport->read_status_mask & CREAD)) {
- retval = tty_insert_flip_string(tty, msm_uport->rx.buffer,
+ retval = tty_insert_flip_string(port, msm_uport->rx.buffer,
rx_count);
BUG_ON(retval != rx_count);
}
@@ -979,9 +981,8 @@
{
struct msm_hs_port *msm_uport =
container_of(work, struct msm_hs_port, rx.tty_work);
- struct tty_struct *tty = msm_uport->uport.state->port.tty;
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&msm_uport->uport.state->port);
}
/*
@@ -1344,7 +1345,6 @@
unsigned long flags;
struct msm_hs_port *msm_uport = dev;
struct uart_port *uport = &msm_uport->uport;
- struct tty_struct *tty = NULL;
spin_lock_irqsave(&uport->lock, flags);
if (msm_uport->clk_state == MSM_HS_CLK_OFF) {
@@ -1361,8 +1361,7 @@
* optionally inject char into tty rx */
msm_hs_request_clock_on_locked(uport);
if (msm_uport->rx_wakeup.inject_rx) {
- tty = uport->state->port.tty;
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(&uport->state->port,
msm_uport->rx_wakeup.rx_to_inject,
TTY_NORMAL);
queue_work(msm_hs_workqueue, &msm_uport->rx.tty_work);
@@ -1400,7 +1399,7 @@
/* do not let tty layer execute RX in global workqueue, use a
* dedicated workqueue managed by this driver */
- uport->state->port.tty->low_latency = 1;
+ uport->state->port.low_latency = 1;
/* turn on uart clk */
ret = msm_hs_init_clk_locked(uport);
diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c
index 925d1fa..e722ff1 100644
--- a/drivers/tty/serial/msm_smd_tty.c
+++ b/drivers/tty/serial/msm_smd_tty.c
@@ -70,7 +70,7 @@
if (avail == 0)
break;
- avail = tty_prepare_flip_string(tty, &ptr, avail);
+ avail = tty_prepare_flip_string(&info->port, &ptr, avail);
if (smd_read(info->ch, ptr, avail) != avail) {
/* shouldn't be possible since we're in interrupt
@@ -80,7 +80,7 @@
pr_err("OOPS - smd_tty_buffer mismatch?!");
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&info->port);
}
/* XXX only when writable and necessary */
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index e2775b6..7fd6aaa 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -242,8 +242,8 @@
*/
static void mux_read(struct uart_port *port)
{
+ struct tty_port *tport = &port->state->port;
int data;
- struct tty_struct *tty = port->state->port.tty;
__u32 start_count = port->icount.rx;
while(1) {
@@ -266,12 +266,11 @@
if (uart_handle_sysrq_char(port, data & 0xffu))
continue;
- tty_insert_flip_char(tty, data & 0xFF, TTY_NORMAL);
+ tty_insert_flip_char(tport, data & 0xFF, TTY_NORMAL);
}
- if (start_count != port->icount.rx) {
- tty_flip_buffer_push(tty);
- }
+ if (start_count != port->icount.rx)
+ tty_flip_buffer_push(tport);
}
/**
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index e55615e..d549fe1 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -364,7 +364,6 @@
static void mxs_auart_rx_chars(struct mxs_auart_port *s)
{
- struct tty_struct *tty = s->port.state->port.tty;
u32 stat = 0;
for (;;) {
@@ -375,7 +374,7 @@
}
writel(stat, s->port.membase + AUART_STAT);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&s->port.state->port);
}
static int mxs_auart_request_port(struct uart_port *u)
@@ -459,7 +458,7 @@
static void dma_rx_callback(void *arg)
{
struct mxs_auart_port *s = (struct mxs_auart_port *) arg;
- struct tty_struct *tty = s->port.state->port.tty;
+ struct tty_port *port = &s->port.state->port;
int count;
u32 stat;
@@ -470,10 +469,10 @@
AUART_STAT_PERR | AUART_STAT_FERR);
count = stat & AUART_STAT_RXCOUNT_MASK;
- tty_insert_flip_string(tty, s->rx_dma_buf, count);
+ tty_insert_flip_string(port, s->rx_dma_buf, count);
writel(stat, s->port.membase + AUART_STAT);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
/* start the next DMA for RX. */
mxs_auart_dma_prep_rx(s);
@@ -552,7 +551,7 @@
return 0;
/* We do not get the right DMA channels. */
- if (s->dma_channel_rx == -1 || s->dma_channel_rx == -1)
+ if (s->dma_channel_rx == -1 || s->dma_channel_tx == -1)
return -EINVAL;
/* init for RX */
diff --git a/drivers/tty/serial/netx-serial.c b/drivers/tty/serial/netx-serial.c
index d40da78..b9a40ed 100644
--- a/drivers/tty/serial/netx-serial.c
+++ b/drivers/tty/serial/netx-serial.c
@@ -199,7 +199,6 @@
static void netx_rxint(struct uart_port *port)
{
unsigned char rx, flg, status;
- struct tty_struct *tty = port->state->port.tty;
while (!(readl(port->membase + UART_FR) & FR_RXFE)) {
rx = readl(port->membase + UART_DR);
@@ -237,8 +236,7 @@
uart_insert_char(port, status, SR_OE, rx, flg);
}
- tty_flip_buffer_push(tty);
- return;
+ tty_flip_buffer_push(&port->state->port);
}
static irqreturn_t netx_int(int irq, void *dev_id)
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index dd4c31d..77287c5 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -128,7 +128,7 @@
static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
{
struct nwpserial_port *up = dev_id;
- struct tty_struct *tty = up->port.state->port.tty;
+ struct tty_port *port = &up->port.state->port;
irqreturn_t ret;
unsigned int iir;
unsigned char ch;
@@ -146,10 +146,10 @@
up->port.icount.rx++;
ch = dcr_read(up->dcr_host, UART_RX);
if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID)
- tty_insert_flip_char(tty, ch, TTY_NORMAL);
+ tty_insert_flip_char(port, ch, TTY_NORMAL);
} while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
ret = IRQ_HANDLED;
/* clear interrupt */
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 57d6b29..9915e4d 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -232,24 +232,42 @@
}
/*
+ * serial_omap_baud_is_mode16 - check if baud rate is MODE16X
+ * @port: uart port info
+ * @baud: baudrate for which mode needs to be determined
+ *
+ * Returns true if baud rate is MODE16X and false if MODE13X
+ * Original table in OMAP TRM named "UART Mode Baud Rates, Divisor Values,
+ * and Error Rates" determines modes not for all common baud rates.
+ * E.g. for 1000000 baud rate mode must be 16x, but according to that
+ * table it's determined as 13x.
+ */
+static bool
+serial_omap_baud_is_mode16(struct uart_port *port, unsigned int baud)
+{
+ unsigned int n13 = port->uartclk / (13 * baud);
+ unsigned int n16 = port->uartclk / (16 * baud);
+ int baudAbsDiff13 = baud - (port->uartclk / (13 * n13));
+ int baudAbsDiff16 = baud - (port->uartclk / (16 * n16));
+ if(baudAbsDiff13 < 0)
+ baudAbsDiff13 = -baudAbsDiff13;
+ if(baudAbsDiff16 < 0)
+ baudAbsDiff16 = -baudAbsDiff16;
+
+ return (baudAbsDiff13 > baudAbsDiff16);
+}
+
+/*
* serial_omap_get_divisor - calculate divisor value
* @port: uart port info
* @baud: baudrate for which divisor needs to be calculated.
- *
- * We have written our own function to get the divisor so as to support
- * 13x mode. 3Mbps Baudrate as an different divisor.
- * Reference OMAP TRM Chapter 17:
- * Table 17-1. UART Mode Baud Rates, Divisor Values, and Error Rates
- * referring to oversampling - divisor value
- * baudrate 460,800 to 3,686,400 all have divisor 13
- * except 3,000,000 which has divisor value 16
*/
static unsigned int
serial_omap_get_divisor(struct uart_port *port, unsigned int baud)
{
unsigned int divisor;
- if (baud > OMAP_MODE13X_SPEED && baud != 3000000)
+ if (!serial_omap_baud_is_mode16(port, baud))
divisor = 13;
else
divisor = 16;
@@ -483,7 +501,6 @@
static irqreturn_t serial_omap_irq(int irq, void *dev_id)
{
struct uart_omap_port *up = dev_id;
- struct tty_struct *tty = up->port.state->port.tty;
unsigned int iir, lsr;
unsigned int type;
irqreturn_t ret = IRQ_NONE;
@@ -530,7 +547,7 @@
spin_unlock(&up->port.lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&up->port.state->port);
pm_runtime_mark_last_busy(up->dev);
pm_runtime_put_autosuspend(up->dev);
@@ -776,6 +793,8 @@
cval |= UART_LCR_PARITY;
if (!(termios->c_cflag & PARODD))
cval |= UART_LCR_EPAR;
+ if (termios->c_cflag & CMSPAR)
+ cval |= UART_LCR_SPAR;
/*
* Ask the core to calculate the divisor for us.
@@ -915,7 +934,7 @@
serial_out(up, UART_EFR, up->efr);
serial_out(up, UART_LCR, cval);
- if (baud > 230400 && baud != 3000000)
+ if (!serial_omap_baud_is_mode16(port, baud))
up->mdr1 = UART_OMAP_MDR1_13X_MODE;
else
up->mdr1 = UART_OMAP_MDR1_16X_MODE;
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 8318925..7a6c989 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -14,18 +14,21 @@
*along with this program; if not, write to the Free Software
*Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
+#if defined(CONFIG_SERIAL_PCH_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
#include <linux/kernel.h>
#include <linux/serial_reg.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/console.h>
#include <linux/serial_core.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/dmi.h>
-#include <linux/console.h>
#include <linux/nmi.h>
#include <linux/delay.h>
@@ -553,12 +556,26 @@
{
int i;
u8 rbr, lsr;
+ struct uart_port *port = &priv->port;
lsr = ioread8(priv->membase + UART_LSR);
for (i = 0, lsr = ioread8(priv->membase + UART_LSR);
- i < rx_size && lsr & UART_LSR_DR;
+ i < rx_size && lsr & (UART_LSR_DR | UART_LSR_BI);
lsr = ioread8(priv->membase + UART_LSR)) {
rbr = ioread8(priv->membase + PCH_UART_RBR);
+
+ if (lsr & UART_LSR_BI) {
+ port->icount.brk++;
+ if (uart_handle_break(port))
+ continue;
+ }
+#ifdef SUPPORT_SYSRQ
+ if (port->sysrq) {
+ if (uart_handle_sysrq_char(port, rbr))
+ continue;
+ }
+#endif
+
buf[i++] = rbr;
}
return i;
@@ -591,19 +608,11 @@
static int push_rx(struct eg20t_port *priv, const unsigned char *buf,
int size)
{
- struct uart_port *port;
- struct tty_struct *tty;
+ struct uart_port *port = &priv->port;
+ struct tty_port *tport = &port->state->port;
- port = &priv->port;
- tty = tty_port_tty_get(&port->state->port);
- if (!tty) {
- dev_dbg(priv->port.dev, "%s:tty is busy now", __func__);
- return -EBUSY;
- }
-
- tty_insert_flip_string(tty, buf, size);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(tport, buf, size);
+ tty_flip_buffer_push(tport);
return 0;
}
@@ -629,15 +638,16 @@
struct tty_struct *tty;
int room;
struct uart_port *port = &priv->port;
+ struct tty_port *tport = &port->state->port;
port = &priv->port;
- tty = tty_port_tty_get(&port->state->port);
+ tty = tty_port_tty_get(tport);
if (!tty) {
dev_dbg(priv->port.dev, "%s:tty is busy now", __func__);
return 0;
}
- room = tty_buffer_request_room(tty, size);
+ room = tty_buffer_request_room(tport, size);
if (room < size)
dev_warn(port->dev, "Rx overrun: dropping %u bytes\n",
@@ -645,7 +655,7 @@
if (!room)
return room;
- tty_insert_flip_string(tty, sg_virt(&priv->sg_rx), size);
+ tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size);
port->icount.rx += room;
tty_kref_put(tty);
@@ -743,19 +753,12 @@
{
struct eg20t_port *priv = arg;
struct uart_port *port = &priv->port;
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
int count;
- if (!tty) {
- dev_dbg(priv->port.dev, "%s:tty is busy now", __func__);
- return;
- }
-
dma_sync_sg_for_cpu(port->dev, &priv->sg_rx, 1, DMA_FROM_DEVICE);
count = dma_push_rx(priv, priv->trigger_level);
if (count)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->state->port);
async_tx_ack(priv->desc_rx);
pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT |
PCH_UART_HAL_RX_ERR_INT);
@@ -1037,23 +1040,33 @@
static void pch_uart_err_ir(struct eg20t_port *priv, unsigned int lsr)
{
- u8 fcr = ioread8(priv->membase + UART_FCR);
-
- /* Reset FIFO */
- fcr |= UART_FCR_CLEAR_RCVR;
- iowrite8(fcr, priv->membase + UART_FCR);
+ struct uart_port *port = &priv->port;
+ struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+ char *error_msg[5] = {};
+ int i = 0;
if (lsr & PCH_UART_LSR_ERR)
- dev_err(&priv->pdev->dev, "Error data in FIFO\n");
+ error_msg[i++] = "Error data in FIFO\n";
- if (lsr & UART_LSR_FE)
- dev_err(&priv->pdev->dev, "Framing Error\n");
+ if (lsr & UART_LSR_FE) {
+ port->icount.frame++;
+ error_msg[i++] = " Framing Error\n";
+ }
- if (lsr & UART_LSR_PE)
- dev_err(&priv->pdev->dev, "Parity Error\n");
+ if (lsr & UART_LSR_PE) {
+ port->icount.parity++;
+ error_msg[i++] = " Parity Error\n";
+ }
- if (lsr & UART_LSR_OE)
- dev_err(&priv->pdev->dev, "Overrun Error\n");
+ if (lsr & UART_LSR_OE) {
+ port->icount.overrun++;
+ error_msg[i++] = " Overrun Error\n";
+ }
+
+ if (tty == NULL) {
+ for (i = 0; error_msg[i] != NULL; i++)
+ dev_err(&priv->pdev->dev, error_msg[i]);
+ }
}
static irqreturn_t pch_uart_interrupt(int irq, void *dev_id)
@@ -1564,7 +1577,8 @@
local_irq_save(flags);
if (priv->port.sysrq) {
- spin_lock(&priv->lock);
+ /* call to uart_handle_sysrq_char already took the priv lock */
+ priv_locked = 0;
/* serial8250_handle_port() already took the port lock */
port_locked = 0;
} else if (oops_in_progress) {
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 333c8d0..b1785f5 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -227,19 +227,19 @@
write_zsreg(uap, R1, uap->curregs[1]);
}
-static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap)
+static bool pmz_receive_chars(struct uart_pmac_port *uap)
{
- struct tty_struct *tty = NULL;
+ struct tty_port *port;
unsigned char ch, r1, drop, error, flag;
int loops = 0;
/* Sanity check, make sure the old bug is no longer happening */
- if (uap->port.state == NULL || uap->port.state->port.tty == NULL) {
+ if (uap->port.state == NULL) {
WARN_ON(1);
(void)read_zsdata(uap);
- return NULL;
+ return false;
}
- tty = uap->port.state->port.tty;
+ port = &uap->port.state->port;
while (1) {
error = 0;
@@ -309,10 +309,10 @@
if (uap->port.ignore_status_mask == 0xff ||
(r1 & uap->port.ignore_status_mask) == 0) {
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(port, ch, flag);
}
if (r1 & Rx_OVR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
next_char:
/* We can get stuck in an infinite loop getting char 0 when the
* line is in a wrong HW state, we break that here.
@@ -328,11 +328,11 @@
break;
}
- return tty;
+ return true;
flood:
pmz_interrupt_control(uap, 0);
pmz_error("pmz: rx irq flood !\n");
- return tty;
+ return true;
}
static void pmz_status_handle(struct uart_pmac_port *uap)
@@ -453,7 +453,7 @@
struct uart_pmac_port *uap_a;
struct uart_pmac_port *uap_b;
int rc = IRQ_NONE;
- struct tty_struct *tty;
+ bool push;
u8 r3;
uap_a = pmz_get_port_A(uap);
@@ -466,7 +466,7 @@
pmz_debug("irq, r3: %x\n", r3);
#endif
/* Channel A */
- tty = NULL;
+ push = false;
if (r3 & (CHAEXT | CHATxIP | CHARxIP)) {
if (!ZS_IS_OPEN(uap_a)) {
pmz_debug("ChanA interrupt while not open !\n");
@@ -477,21 +477,21 @@
if (r3 & CHAEXT)
pmz_status_handle(uap_a);
if (r3 & CHARxIP)
- tty = pmz_receive_chars(uap_a);
+ push = pmz_receive_chars(uap_a);
if (r3 & CHATxIP)
pmz_transmit_chars(uap_a);
rc = IRQ_HANDLED;
}
skip_a:
spin_unlock(&uap_a->port.lock);
- if (tty != NULL)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&uap->port.state->port);
if (!uap_b)
goto out;
spin_lock(&uap_b->port.lock);
- tty = NULL;
+ push = false;
if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) {
if (!ZS_IS_OPEN(uap_b)) {
pmz_debug("ChanB interrupt while not open !\n");
@@ -502,15 +502,15 @@
if (r3 & CHBEXT)
pmz_status_handle(uap_b);
if (r3 & CHBRxIP)
- tty = pmz_receive_chars(uap_b);
+ push = pmz_receive_chars(uap_b);
if (r3 & CHBTxIP)
pmz_transmit_chars(uap_b);
rc = IRQ_HANDLED;
}
skip_b:
spin_unlock(&uap_b->port.lock);
- if (tty != NULL)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&uap->port.state->port);
out:
return rc;
diff --git a/drivers/tty/serial/pnx8xxx_uart.c b/drivers/tty/serial/pnx8xxx_uart.c
index 0aa75a97..7e277a5 100644
--- a/drivers/tty/serial/pnx8xxx_uart.c
+++ b/drivers/tty/serial/pnx8xxx_uart.c
@@ -181,7 +181,6 @@
static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport)
{
- struct tty_struct *tty = sport->port.state->port.tty;
unsigned int status, ch, flg;
status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) |
@@ -238,7 +237,7 @@
status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) |
ISTAT_TO_SM(serial_in(sport, PNX8XXX_ISTAT));
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&sport->port.state->port);
}
static void pnx8xxx_tx_chars(struct pnx8xxx_port *sport)
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 2764828..05f504e 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -98,7 +98,6 @@
static inline void receive_chars(struct uart_pxa_port *up, int *status)
{
- struct tty_struct *tty = up->port.state->port.tty;
unsigned int ch, flag;
int max_count = 256;
@@ -168,7 +167,7 @@
ignore_char:
*status = serial_in(up, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&up->port.state->port);
/* work around Errata #20 according to
* Intel(R) PXA27x Processor Family
@@ -673,8 +672,7 @@
unsigned long flags;
int locked = 1;
- clk_prepare_enable(up->clk);
-
+ clk_enable(up->clk);
local_irq_save(flags);
if (up->port.sysrq)
locked = 0;
@@ -701,8 +699,8 @@
if (locked)
spin_unlock(&up->port.lock);
local_irq_restore(flags);
+ clk_disable(up->clk);
- clk_disable_unprepare(up->clk);
}
#ifdef CONFIG_CONSOLE_POLL
@@ -899,6 +897,12 @@
goto err_free;
}
+ ret = clk_prepare(sport->clk);
+ if (ret) {
+ clk_put(sport->clk);
+ goto err_free;
+ }
+
sport->port.type = PORT_PXA;
sport->port.iotype = UPIO_MEM;
sport->port.mapbase = mmres->start;
@@ -930,6 +934,7 @@
return 0;
err_clk:
+ clk_unprepare(sport->clk);
clk_put(sport->clk);
err_free:
kfree(sport);
@@ -943,6 +948,8 @@
platform_set_drvdata(dev, NULL);
uart_remove_one_port(&serial_pxa_reg, &sport->port);
+
+ clk_unprepare(sport->clk);
clk_put(sport->clk);
kfree(sport);
diff --git a/drivers/tty/serial/rp2.c b/drivers/tty/serial/rp2.c
new file mode 100644
index 0000000..a314a94
--- /dev/null
+++ b/drivers/tty/serial/rp2.c
@@ -0,0 +1,885 @@
+/*
+ * Driver for Comtrol RocketPort EXPRESS/INFINITY cards
+ *
+ * Copyright (C) 2012 Kevin Cernekee <[email protected]>
+ *
+ * Inspired by, and loosely based on:
+ *
+ * ar933x_uart.c
+ * Copyright (C) 2011 Gabor Juhos <[email protected]>
+ *
+ * rocketport_infinity_express-linux-1.20.tar.gz
+ * Copyright (C) 2004-2011 Comtrol, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/bitops.h>
+#include <linux/compiler.h>
+#include <linux/completion.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/slab.h>
+#include <linux/sysrq.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/types.h>
+
+#define DRV_NAME "rp2"
+
+#define RP2_FW_NAME "rp2.fw"
+#define RP2_UCODE_BYTES 0x3f
+
+#define PORTS_PER_ASIC 16
+#define ALL_PORTS_MASK (BIT(PORTS_PER_ASIC) - 1)
+
+#define UART_CLOCK 44236800
+#define DEFAULT_BAUD_DIV (UART_CLOCK / (9600 * 16))
+#define FIFO_SIZE 512
+
+/* BAR0 registers */
+#define RP2_FPGA_CTL0 0x110
+#define RP2_FPGA_CTL1 0x11c
+#define RP2_IRQ_MASK 0x1ec
+#define RP2_IRQ_MASK_EN_m BIT(0)
+#define RP2_IRQ_STATUS 0x1f0
+
+/* BAR1 registers */
+#define RP2_ASIC_SPACING 0x1000
+#define RP2_ASIC_OFFSET(i) ((i) << ilog2(RP2_ASIC_SPACING))
+
+#define RP2_PORT_BASE 0x000
+#define RP2_PORT_SPACING 0x040
+
+#define RP2_UCODE_BASE 0x400
+#define RP2_UCODE_SPACING 0x80
+
+#define RP2_CLK_PRESCALER 0xc00
+#define RP2_CH_IRQ_STAT 0xc04
+#define RP2_CH_IRQ_MASK 0xc08
+#define RP2_ASIC_IRQ 0xd00
+#define RP2_ASIC_IRQ_EN_m BIT(20)
+#define RP2_GLOBAL_CMD 0xd0c
+#define RP2_ASIC_CFG 0xd04
+
+/* port registers */
+#define RP2_DATA_DWORD 0x000
+
+#define RP2_DATA_BYTE 0x008
+#define RP2_DATA_BYTE_ERR_PARITY_m BIT(8)
+#define RP2_DATA_BYTE_ERR_OVERRUN_m BIT(9)
+#define RP2_DATA_BYTE_ERR_FRAMING_m BIT(10)
+#define RP2_DATA_BYTE_BREAK_m BIT(11)
+
+/* This lets uart_insert_char() drop bytes received on a !CREAD port */
+#define RP2_DUMMY_READ BIT(16)
+
+#define RP2_DATA_BYTE_EXCEPTION_MASK (RP2_DATA_BYTE_ERR_PARITY_m | \
+ RP2_DATA_BYTE_ERR_OVERRUN_m | \
+ RP2_DATA_BYTE_ERR_FRAMING_m | \
+ RP2_DATA_BYTE_BREAK_m)
+
+#define RP2_RX_FIFO_COUNT 0x00c
+#define RP2_TX_FIFO_COUNT 0x00e
+
+#define RP2_CHAN_STAT 0x010
+#define RP2_CHAN_STAT_RXDATA_m BIT(0)
+#define RP2_CHAN_STAT_DCD_m BIT(3)
+#define RP2_CHAN_STAT_DSR_m BIT(4)
+#define RP2_CHAN_STAT_CTS_m BIT(5)
+#define RP2_CHAN_STAT_RI_m BIT(6)
+#define RP2_CHAN_STAT_OVERRUN_m BIT(13)
+#define RP2_CHAN_STAT_DSR_CHANGED_m BIT(16)
+#define RP2_CHAN_STAT_CTS_CHANGED_m BIT(17)
+#define RP2_CHAN_STAT_CD_CHANGED_m BIT(18)
+#define RP2_CHAN_STAT_RI_CHANGED_m BIT(22)
+#define RP2_CHAN_STAT_TXEMPTY_m BIT(25)
+
+#define RP2_CHAN_STAT_MS_CHANGED_MASK (RP2_CHAN_STAT_DSR_CHANGED_m | \
+ RP2_CHAN_STAT_CTS_CHANGED_m | \
+ RP2_CHAN_STAT_CD_CHANGED_m | \
+ RP2_CHAN_STAT_RI_CHANGED_m)
+
+#define RP2_TXRX_CTL 0x014
+#define RP2_TXRX_CTL_MSRIRQ_m BIT(0)
+#define RP2_TXRX_CTL_RXIRQ_m BIT(2)
+#define RP2_TXRX_CTL_RX_TRIG_s 3
+#define RP2_TXRX_CTL_RX_TRIG_m (0x3 << RP2_TXRX_CTL_RX_TRIG_s)
+#define RP2_TXRX_CTL_RX_TRIG_1 (0x1 << RP2_TXRX_CTL_RX_TRIG_s)
+#define RP2_TXRX_CTL_RX_TRIG_256 (0x2 << RP2_TXRX_CTL_RX_TRIG_s)
+#define RP2_TXRX_CTL_RX_TRIG_448 (0x3 << RP2_TXRX_CTL_RX_TRIG_s)
+#define RP2_TXRX_CTL_RX_EN_m BIT(5)
+#define RP2_TXRX_CTL_RTSFLOW_m BIT(6)
+#define RP2_TXRX_CTL_DTRFLOW_m BIT(7)
+#define RP2_TXRX_CTL_TX_TRIG_s 16
+#define RP2_TXRX_CTL_TX_TRIG_m (0x3 << RP2_TXRX_CTL_RX_TRIG_s)
+#define RP2_TXRX_CTL_DSRFLOW_m BIT(18)
+#define RP2_TXRX_CTL_TXIRQ_m BIT(19)
+#define RP2_TXRX_CTL_CTSFLOW_m BIT(23)
+#define RP2_TXRX_CTL_TX_EN_m BIT(24)
+#define RP2_TXRX_CTL_RTS_m BIT(25)
+#define RP2_TXRX_CTL_DTR_m BIT(26)
+#define RP2_TXRX_CTL_LOOP_m BIT(27)
+#define RP2_TXRX_CTL_BREAK_m BIT(28)
+#define RP2_TXRX_CTL_CMSPAR_m BIT(29)
+#define RP2_TXRX_CTL_nPARODD_m BIT(30)
+#define RP2_TXRX_CTL_PARENB_m BIT(31)
+
+#define RP2_UART_CTL 0x018
+#define RP2_UART_CTL_MODE_s 0
+#define RP2_UART_CTL_MODE_m (0x7 << RP2_UART_CTL_MODE_s)
+#define RP2_UART_CTL_MODE_rs232 (0x1 << RP2_UART_CTL_MODE_s)
+#define RP2_UART_CTL_FLUSH_RX_m BIT(3)
+#define RP2_UART_CTL_FLUSH_TX_m BIT(4)
+#define RP2_UART_CTL_RESET_CH_m BIT(5)
+#define RP2_UART_CTL_XMIT_EN_m BIT(6)
+#define RP2_UART_CTL_DATABITS_s 8
+#define RP2_UART_CTL_DATABITS_m (0x3 << RP2_UART_CTL_DATABITS_s)
+#define RP2_UART_CTL_DATABITS_8 (0x3 << RP2_UART_CTL_DATABITS_s)
+#define RP2_UART_CTL_DATABITS_7 (0x2 << RP2_UART_CTL_DATABITS_s)
+#define RP2_UART_CTL_DATABITS_6 (0x1 << RP2_UART_CTL_DATABITS_s)
+#define RP2_UART_CTL_DATABITS_5 (0x0 << RP2_UART_CTL_DATABITS_s)
+#define RP2_UART_CTL_STOPBITS_m BIT(10)
+
+#define RP2_BAUD 0x01c
+
+/* ucode registers */
+#define RP2_TX_SWFLOW 0x02
+#define RP2_TX_SWFLOW_ena 0x81
+#define RP2_TX_SWFLOW_dis 0x9d
+
+#define RP2_RX_SWFLOW 0x0c
+#define RP2_RX_SWFLOW_ena 0x81
+#define RP2_RX_SWFLOW_dis 0x8d
+
+#define RP2_RX_FIFO 0x37
+#define RP2_RX_FIFO_ena 0x08
+#define RP2_RX_FIFO_dis 0x81
+
+static struct uart_driver rp2_uart_driver = {
+ .owner = THIS_MODULE,
+ .driver_name = DRV_NAME,
+ .dev_name = "ttyRP",
+ .nr = CONFIG_SERIAL_RP2_NR_UARTS,
+};
+
+struct rp2_card;
+
+struct rp2_uart_port {
+ struct uart_port port;
+ int idx;
+ int ignore_rx;
+ struct rp2_card *card;
+ void __iomem *asic_base;
+ void __iomem *base;
+ void __iomem *ucode;
+};
+
+struct rp2_card {
+ struct pci_dev *pdev;
+ struct rp2_uart_port *ports;
+ int n_ports;
+ int initialized_ports;
+ int minor_start;
+ int smpte;
+ void __iomem *bar0;
+ void __iomem *bar1;
+ spinlock_t card_lock;
+ struct completion fw_loaded;
+};
+
+#define RP_ID(prod) PCI_VDEVICE(RP, (prod))
+#define RP_CAP(ports, smpte) (((ports) << 8) | ((smpte) << 0))
+
+static inline void rp2_decode_cap(const struct pci_device_id *id,
+ int *ports, int *smpte)
+{
+ *ports = id->driver_data >> 8;
+ *smpte = id->driver_data & 0xff;
+}
+
+static DEFINE_SPINLOCK(rp2_minor_lock);
+static int rp2_minor_next;
+
+static int rp2_alloc_ports(int n_ports)
+{
+ int ret = -ENOSPC;
+
+ spin_lock(&rp2_minor_lock);
+ if (rp2_minor_next + n_ports <= CONFIG_SERIAL_RP2_NR_UARTS) {
+ /* sorry, no support for hot unplugging individual cards */
+ ret = rp2_minor_next;
+ rp2_minor_next += n_ports;
+ }
+ spin_unlock(&rp2_minor_lock);
+
+ return ret;
+}
+
+static inline struct rp2_uart_port *port_to_up(struct uart_port *port)
+{
+ return container_of(port, struct rp2_uart_port, port);
+}
+
+static void rp2_rmw(struct rp2_uart_port *up, int reg,
+ u32 clr_bits, u32 set_bits)
+{
+ u32 tmp = readl(up->base + reg);
+ tmp &= ~clr_bits;
+ tmp |= set_bits;
+ writel(tmp, up->base + reg);
+}
+
+static void rp2_rmw_clr(struct rp2_uart_port *up, int reg, u32 val)
+{
+ rp2_rmw(up, reg, val, 0);
+}
+
+static void rp2_rmw_set(struct rp2_uart_port *up, int reg, u32 val)
+{
+ rp2_rmw(up, reg, 0, val);
+}
+
+static void rp2_mask_ch_irq(struct rp2_uart_port *up, int ch_num,
+ int is_enabled)
+{
+ unsigned long flags, irq_mask;
+
+ spin_lock_irqsave(&up->card->card_lock, flags);
+
+ irq_mask = readl(up->asic_base + RP2_CH_IRQ_MASK);
+ if (is_enabled)
+ irq_mask &= ~BIT(ch_num);
+ else
+ irq_mask |= BIT(ch_num);
+ writel(irq_mask, up->asic_base + RP2_CH_IRQ_MASK);
+
+ spin_unlock_irqrestore(&up->card->card_lock, flags);
+}
+
+static unsigned int rp2_uart_tx_empty(struct uart_port *port)
+{
+ struct rp2_uart_port *up = port_to_up(port);
+ unsigned long tx_fifo_bytes, flags;
+
+ /*
+ * This should probably check the transmitter, not the FIFO.
+ * But the TXEMPTY bit doesn't seem to work unless the TX IRQ is
+ * enabled.
+ */
+ spin_lock_irqsave(&up->port.lock, flags);
+ tx_fifo_bytes = readw(up->base + RP2_TX_FIFO_COUNT);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ return tx_fifo_bytes ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int rp2_uart_get_mctrl(struct uart_port *port)
+{
+ struct rp2_uart_port *up = port_to_up(port);
+ u32 status;
+
+ status = readl(up->base + RP2_CHAN_STAT);
+ return ((status & RP2_CHAN_STAT_DCD_m) ? TIOCM_CAR : 0) |
+ ((status & RP2_CHAN_STAT_DSR_m) ? TIOCM_DSR : 0) |
+ ((status & RP2_CHAN_STAT_CTS_m) ? TIOCM_CTS : 0) |
+ ((status & RP2_CHAN_STAT_RI_m) ? TIOCM_RI : 0);
+}
+
+static void rp2_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ rp2_rmw(port_to_up(port), RP2_TXRX_CTL,
+ RP2_TXRX_CTL_DTR_m | RP2_TXRX_CTL_RTS_m | RP2_TXRX_CTL_LOOP_m,
+ ((mctrl & TIOCM_DTR) ? RP2_TXRX_CTL_DTR_m : 0) |
+ ((mctrl & TIOCM_RTS) ? RP2_TXRX_CTL_RTS_m : 0) |
+ ((mctrl & TIOCM_LOOP) ? RP2_TXRX_CTL_LOOP_m : 0));
+}
+
+static void rp2_uart_start_tx(struct uart_port *port)
+{
+ rp2_rmw_set(port_to_up(port), RP2_TXRX_CTL, RP2_TXRX_CTL_TXIRQ_m);
+}
+
+static void rp2_uart_stop_tx(struct uart_port *port)
+{
+ rp2_rmw_clr(port_to_up(port), RP2_TXRX_CTL, RP2_TXRX_CTL_TXIRQ_m);
+}
+
+static void rp2_uart_stop_rx(struct uart_port *port)
+{
+ rp2_rmw_clr(port_to_up(port), RP2_TXRX_CTL, RP2_TXRX_CTL_RXIRQ_m);
+}
+
+static void rp2_uart_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ rp2_rmw(port_to_up(port), RP2_TXRX_CTL, RP2_TXRX_CTL_BREAK_m,
+ break_state ? RP2_TXRX_CTL_BREAK_m : 0);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void rp2_uart_enable_ms(struct uart_port *port)
+{
+ rp2_rmw_set(port_to_up(port), RP2_TXRX_CTL, RP2_TXRX_CTL_MSRIRQ_m);
+}
+
+static void __rp2_uart_set_termios(struct rp2_uart_port *up,
+ unsigned long cfl,
+ unsigned long ifl,
+ unsigned int baud_div)
+{
+ /* baud rate divisor (calculated elsewhere). 0 = divide-by-1 */
+ writew(baud_div - 1, up->base + RP2_BAUD);
+
+ /* data bits and stop bits */
+ rp2_rmw(up, RP2_UART_CTL,
+ RP2_UART_CTL_STOPBITS_m | RP2_UART_CTL_DATABITS_m,
+ ((cfl & CSTOPB) ? RP2_UART_CTL_STOPBITS_m : 0) |
+ (((cfl & CSIZE) == CS8) ? RP2_UART_CTL_DATABITS_8 : 0) |
+ (((cfl & CSIZE) == CS7) ? RP2_UART_CTL_DATABITS_7 : 0) |
+ (((cfl & CSIZE) == CS6) ? RP2_UART_CTL_DATABITS_6 : 0) |
+ (((cfl & CSIZE) == CS5) ? RP2_UART_CTL_DATABITS_5 : 0));
+
+ /* parity and hardware flow control */
+ rp2_rmw(up, RP2_TXRX_CTL,
+ RP2_TXRX_CTL_PARENB_m | RP2_TXRX_CTL_nPARODD_m |
+ RP2_TXRX_CTL_CMSPAR_m | RP2_TXRX_CTL_DTRFLOW_m |
+ RP2_TXRX_CTL_DSRFLOW_m | RP2_TXRX_CTL_RTSFLOW_m |
+ RP2_TXRX_CTL_CTSFLOW_m,
+ ((cfl & PARENB) ? RP2_TXRX_CTL_PARENB_m : 0) |
+ ((cfl & PARODD) ? 0 : RP2_TXRX_CTL_nPARODD_m) |
+ ((cfl & CMSPAR) ? RP2_TXRX_CTL_CMSPAR_m : 0) |
+ ((cfl & CRTSCTS) ? (RP2_TXRX_CTL_RTSFLOW_m |
+ RP2_TXRX_CTL_CTSFLOW_m) : 0));
+
+ /* XON/XOFF software flow control */
+ writeb((ifl & IXON) ? RP2_TX_SWFLOW_ena : RP2_TX_SWFLOW_dis,
+ up->ucode + RP2_TX_SWFLOW);
+ writeb((ifl & IXOFF) ? RP2_RX_SWFLOW_ena : RP2_RX_SWFLOW_dis,
+ up->ucode + RP2_RX_SWFLOW);
+}
+
+static void rp2_uart_set_termios(struct uart_port *port,
+ struct ktermios *new,
+ struct ktermios *old)
+{
+ struct rp2_uart_port *up = port_to_up(port);
+ unsigned long flags;
+ unsigned int baud, baud_div;
+
+ baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
+ baud_div = uart_get_divisor(port, baud);
+
+ if (tty_termios_baud_rate(new))
+ tty_termios_encode_baud_rate(new, baud, baud);
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ /* ignore all characters if CREAD is not set */
+ port->ignore_status_mask = (new->c_cflag & CREAD) ? 0 : RP2_DUMMY_READ;
+
+ __rp2_uart_set_termios(up, new->c_cflag, new->c_iflag, baud_div);
+ uart_update_timeout(port, new->c_cflag, baud);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void rp2_rx_chars(struct rp2_uart_port *up)
+{
+ u16 bytes = readw(up->base + RP2_RX_FIFO_COUNT);
+ struct tty_port *port = &up->port.state->port;
+
+ for (; bytes != 0; bytes--) {
+ u32 byte = readw(up->base + RP2_DATA_BYTE) | RP2_DUMMY_READ;
+ char ch = byte & 0xff;
+
+ if (likely(!(byte & RP2_DATA_BYTE_EXCEPTION_MASK))) {
+ if (!uart_handle_sysrq_char(&up->port, ch))
+ uart_insert_char(&up->port, byte, 0, ch,
+ TTY_NORMAL);
+ } else {
+ char flag = TTY_NORMAL;
+
+ if (byte & RP2_DATA_BYTE_BREAK_m)
+ flag = TTY_BREAK;
+ else if (byte & RP2_DATA_BYTE_ERR_FRAMING_m)
+ flag = TTY_FRAME;
+ else if (byte & RP2_DATA_BYTE_ERR_PARITY_m)
+ flag = TTY_PARITY;
+ uart_insert_char(&up->port, byte,
+ RP2_DATA_BYTE_ERR_OVERRUN_m, ch, flag);
+ }
+ up->port.icount.rx++;
+ }
+
+ tty_flip_buffer_push(port);
+}
+
+static void rp2_tx_chars(struct rp2_uart_port *up)
+{
+ u16 max_tx = FIFO_SIZE - readw(up->base + RP2_TX_FIFO_COUNT);
+ struct circ_buf *xmit = &up->port.state->xmit;
+
+ if (uart_tx_stopped(&up->port)) {
+ rp2_uart_stop_tx(&up->port);
+ return;
+ }
+
+ for (; max_tx != 0; max_tx--) {
+ if (up->port.x_char) {
+ writeb(up->port.x_char, up->base + RP2_DATA_BYTE);
+ up->port.x_char = 0;
+ up->port.icount.tx++;
+ continue;
+ }
+ if (uart_circ_empty(xmit)) {
+ rp2_uart_stop_tx(&up->port);
+ break;
+ }
+ writeb(xmit->buf[xmit->tail], up->base + RP2_DATA_BYTE);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ up->port.icount.tx++;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&up->port);
+}
+
+static void rp2_ch_interrupt(struct rp2_uart_port *up)
+{
+ u32 status;
+
+ spin_lock(&up->port.lock);
+
+ /*
+ * The IRQ status bits are clear-on-write. Other status bits in
+ * this register aren't, so it's harmless to write to them.
+ */
+ status = readl(up->base + RP2_CHAN_STAT);
+ writel(status, up->base + RP2_CHAN_STAT);
+
+ if (status & RP2_CHAN_STAT_RXDATA_m)
+ rp2_rx_chars(up);
+ if (status & RP2_CHAN_STAT_TXEMPTY_m)
+ rp2_tx_chars(up);
+ if (status & RP2_CHAN_STAT_MS_CHANGED_MASK)
+ wake_up_interruptible(&up->port.state->port.delta_msr_wait);
+
+ spin_unlock(&up->port.lock);
+}
+
+static int rp2_asic_interrupt(struct rp2_card *card, unsigned int asic_id)
+{
+ void __iomem *base = card->bar1 + RP2_ASIC_OFFSET(asic_id);
+ int ch, handled = 0;
+ unsigned long status = readl(base + RP2_CH_IRQ_STAT) &
+ ~readl(base + RP2_CH_IRQ_MASK);
+
+ for_each_set_bit(ch, &status, PORTS_PER_ASIC) {
+ rp2_ch_interrupt(&card->ports[ch]);
+ handled++;
+ }
+ return handled;
+}
+
+static irqreturn_t rp2_uart_interrupt(int irq, void *dev_id)
+{
+ struct rp2_card *card = dev_id;
+ int handled;
+
+ handled = rp2_asic_interrupt(card, 0);
+ if (card->n_ports >= PORTS_PER_ASIC)
+ handled += rp2_asic_interrupt(card, 1);
+
+ return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static inline void rp2_flush_fifos(struct rp2_uart_port *up)
+{
+ rp2_rmw_set(up, RP2_UART_CTL,
+ RP2_UART_CTL_FLUSH_RX_m | RP2_UART_CTL_FLUSH_TX_m);
+ readl(up->base + RP2_UART_CTL);
+ udelay(10);
+ rp2_rmw_clr(up, RP2_UART_CTL,
+ RP2_UART_CTL_FLUSH_RX_m | RP2_UART_CTL_FLUSH_TX_m);
+}
+
+static int rp2_uart_startup(struct uart_port *port)
+{
+ struct rp2_uart_port *up = port_to_up(port);
+
+ rp2_flush_fifos(up);
+ rp2_rmw(up, RP2_TXRX_CTL, RP2_TXRX_CTL_MSRIRQ_m, RP2_TXRX_CTL_RXIRQ_m);
+ rp2_rmw(up, RP2_TXRX_CTL, RP2_TXRX_CTL_RX_TRIG_m,
+ RP2_TXRX_CTL_RX_TRIG_1);
+ rp2_rmw(up, RP2_CHAN_STAT, 0, 0);
+ rp2_mask_ch_irq(up, up->idx, 1);
+
+ return 0;
+}
+
+static void rp2_uart_shutdown(struct uart_port *port)
+{
+ struct rp2_uart_port *up = port_to_up(port);
+ unsigned long flags;
+
+ rp2_uart_break_ctl(port, 0);
+
+ spin_lock_irqsave(&port->lock, flags);
+ rp2_mask_ch_irq(up, up->idx, 0);
+ rp2_rmw(up, RP2_CHAN_STAT, 0, 0);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *rp2_uart_type(struct uart_port *port)
+{
+ return (port->type == PORT_RP2) ? "RocketPort 2 UART" : NULL;
+}
+
+static void rp2_uart_release_port(struct uart_port *port)
+{
+ /* Nothing to release ... */
+}
+
+static int rp2_uart_request_port(struct uart_port *port)
+{
+ /* UARTs always present */
+ return 0;
+}
+
+static void rp2_uart_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE)
+ port->type = PORT_RP2;
+}
+
+static int rp2_uart_verify_port(struct uart_port *port,
+ struct serial_struct *ser)
+{
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_RP2)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct uart_ops rp2_uart_ops = {
+ .tx_empty = rp2_uart_tx_empty,
+ .set_mctrl = rp2_uart_set_mctrl,
+ .get_mctrl = rp2_uart_get_mctrl,
+ .stop_tx = rp2_uart_stop_tx,
+ .start_tx = rp2_uart_start_tx,
+ .stop_rx = rp2_uart_stop_rx,
+ .enable_ms = rp2_uart_enable_ms,
+ .break_ctl = rp2_uart_break_ctl,
+ .startup = rp2_uart_startup,
+ .shutdown = rp2_uart_shutdown,
+ .set_termios = rp2_uart_set_termios,
+ .type = rp2_uart_type,
+ .release_port = rp2_uart_release_port,
+ .request_port = rp2_uart_request_port,
+ .config_port = rp2_uart_config_port,
+ .verify_port = rp2_uart_verify_port,
+};
+
+static void rp2_reset_asic(struct rp2_card *card, unsigned int asic_id)
+{
+ void __iomem *base = card->bar1 + RP2_ASIC_OFFSET(asic_id);
+ u32 clk_cfg;
+
+ writew(1, base + RP2_GLOBAL_CMD);
+ readw(base + RP2_GLOBAL_CMD);
+ msleep(100);
+ writel(0, base + RP2_CLK_PRESCALER);
+
+ /* TDM clock configuration */
+ clk_cfg = readw(base + RP2_ASIC_CFG);
+ clk_cfg = (clk_cfg & ~BIT(8)) | BIT(9);
+ writew(clk_cfg, base + RP2_ASIC_CFG);
+
+ /* IRQ routing */
+ writel(ALL_PORTS_MASK, base + RP2_CH_IRQ_MASK);
+ writel(RP2_ASIC_IRQ_EN_m, base + RP2_ASIC_IRQ);
+}
+
+static void rp2_init_card(struct rp2_card *card)
+{
+ writel(4, card->bar0 + RP2_FPGA_CTL0);
+ writel(0, card->bar0 + RP2_FPGA_CTL1);
+
+ rp2_reset_asic(card, 0);
+ if (card->n_ports >= PORTS_PER_ASIC)
+ rp2_reset_asic(card, 1);
+
+ writel(RP2_IRQ_MASK_EN_m, card->bar0 + RP2_IRQ_MASK);
+}
+
+static void rp2_init_port(struct rp2_uart_port *up, const struct firmware *fw)
+{
+ int i;
+
+ writel(RP2_UART_CTL_RESET_CH_m, up->base + RP2_UART_CTL);
+ readl(up->base + RP2_UART_CTL);
+ udelay(1);
+
+ writel(0, up->base + RP2_TXRX_CTL);
+ writel(0, up->base + RP2_UART_CTL);
+ readl(up->base + RP2_UART_CTL);
+ udelay(1);
+
+ rp2_flush_fifos(up);
+
+ for (i = 0; i < min_t(int, fw->size, RP2_UCODE_BYTES); i++)
+ writeb(fw->data[i], up->ucode + i);
+
+ __rp2_uart_set_termios(up, CS8 | CREAD | CLOCAL, 0, DEFAULT_BAUD_DIV);
+ rp2_uart_set_mctrl(&up->port, 0);
+
+ writeb(RP2_RX_FIFO_ena, up->ucode + RP2_RX_FIFO);
+ rp2_rmw(up, RP2_UART_CTL, RP2_UART_CTL_MODE_m,
+ RP2_UART_CTL_XMIT_EN_m | RP2_UART_CTL_MODE_rs232);
+ rp2_rmw_set(up, RP2_TXRX_CTL,
+ RP2_TXRX_CTL_TX_EN_m | RP2_TXRX_CTL_RX_EN_m);
+}
+
+static void rp2_remove_ports(struct rp2_card *card)
+{
+ int i;
+
+ for (i = 0; i < card->initialized_ports; i++)
+ uart_remove_one_port(&rp2_uart_driver, &card->ports[i].port);
+ card->initialized_ports = 0;
+}
+
+static void rp2_fw_cb(const struct firmware *fw, void *context)
+{
+ struct rp2_card *card = context;
+ resource_size_t phys_base;
+ int i, rc = -ENOENT;
+
+ if (!fw) {
+ dev_err(&card->pdev->dev, "cannot find '%s' firmware image\n",
+ RP2_FW_NAME);
+ goto no_fw;
+ }
+
+ phys_base = pci_resource_start(card->pdev, 1);
+
+ for (i = 0; i < card->n_ports; i++) {
+ struct rp2_uart_port *rp = &card->ports[i];
+ struct uart_port *p;
+ int j = (unsigned)i % PORTS_PER_ASIC;
+
+ rp->asic_base = card->bar1;
+ rp->base = card->bar1 + RP2_PORT_BASE + j*RP2_PORT_SPACING;
+ rp->ucode = card->bar1 + RP2_UCODE_BASE + j*RP2_UCODE_SPACING;
+ rp->card = card;
+ rp->idx = j;
+
+ p = &rp->port;
+ p->line = card->minor_start + i;
+ p->dev = &card->pdev->dev;
+ p->type = PORT_RP2;
+ p->iotype = UPIO_MEM32;
+ p->uartclk = UART_CLOCK;
+ p->regshift = 2;
+ p->fifosize = FIFO_SIZE;
+ p->ops = &rp2_uart_ops;
+ p->irq = card->pdev->irq;
+ p->membase = rp->base;
+ p->mapbase = phys_base + RP2_PORT_BASE + j*RP2_PORT_SPACING;
+
+ if (i >= PORTS_PER_ASIC) {
+ rp->asic_base += RP2_ASIC_SPACING;
+ rp->base += RP2_ASIC_SPACING;
+ rp->ucode += RP2_ASIC_SPACING;
+ p->mapbase += RP2_ASIC_SPACING;
+ }
+
+ rp2_init_port(rp, fw);
+ rc = uart_add_one_port(&rp2_uart_driver, p);
+ if (rc) {
+ dev_err(&card->pdev->dev,
+ "error registering port %d: %d\n", i, rc);
+ rp2_remove_ports(card);
+ break;
+ }
+ card->initialized_ports++;
+ }
+
+ release_firmware(fw);
+no_fw:
+ /*
+ * rp2_fw_cb() is called from a workqueue long after rp2_probe()
+ * has already returned success. So if something failed here,
+ * we'll just leave the now-dormant device in place until somebody
+ * unbinds it.
+ */
+ if (rc)
+ dev_warn(&card->pdev->dev, "driver initialization failed\n");
+
+ complete(&card->fw_loaded);
+}
+
+static int rp2_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct rp2_card *card;
+ struct rp2_uart_port *ports;
+ void __iomem * const *bars;
+ int rc;
+
+ card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+ pci_set_drvdata(pdev, card);
+ spin_lock_init(&card->card_lock);
+ init_completion(&card->fw_loaded);
+
+ rc = pcim_enable_device(pdev);
+ if (rc)
+ return rc;
+
+ rc = pcim_iomap_regions_request_all(pdev, 0x03, DRV_NAME);
+ if (rc)
+ return rc;
+
+ bars = pcim_iomap_table(pdev);
+ card->bar0 = bars[0];
+ card->bar1 = bars[1];
+ card->pdev = pdev;
+
+ rp2_decode_cap(id, &card->n_ports, &card->smpte);
+ dev_info(&pdev->dev, "found new card with %d ports\n", card->n_ports);
+
+ card->minor_start = rp2_alloc_ports(card->n_ports);
+ if (card->minor_start < 0) {
+ dev_err(&pdev->dev,
+ "too many ports (try increasing CONFIG_SERIAL_RP2_NR_UARTS)\n");
+ return -EINVAL;
+ }
+
+ rp2_init_card(card);
+
+ ports = devm_kzalloc(&pdev->dev, sizeof(*ports) * card->n_ports,
+ GFP_KERNEL);
+ if (!ports)
+ return -ENOMEM;
+ card->ports = ports;
+
+ rc = devm_request_irq(&pdev->dev, pdev->irq, rp2_uart_interrupt,
+ IRQF_SHARED, DRV_NAME, card);
+ if (rc)
+ return rc;
+
+ /*
+ * Only catastrophic errors (e.g. ENOMEM) are reported here.
+ * If the FW image is missing, we'll find out in rp2_fw_cb()
+ * and print an error message.
+ */
+ rc = request_firmware_nowait(THIS_MODULE, 1, RP2_FW_NAME, &pdev->dev,
+ GFP_KERNEL, card, rp2_fw_cb);
+ if (rc)
+ return rc;
+ dev_dbg(&pdev->dev, "waiting for firmware blob...\n");
+
+ return 0;
+}
+
+static void rp2_remove(struct pci_dev *pdev)
+{
+ struct rp2_card *card = pci_get_drvdata(pdev);
+
+ wait_for_completion(&card->fw_loaded);
+ rp2_remove_ports(card);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(rp2_pci_tbl) = {
+
+ /* RocketPort INFINITY cards */
+
+ { RP_ID(0x0040), RP_CAP(8, 0) }, /* INF Octa, RJ45, selectable */
+ { RP_ID(0x0041), RP_CAP(32, 0) }, /* INF 32, ext interface */
+ { RP_ID(0x0042), RP_CAP(8, 0) }, /* INF Octa, ext interface */
+ { RP_ID(0x0043), RP_CAP(16, 0) }, /* INF 16, ext interface */
+ { RP_ID(0x0044), RP_CAP(4, 0) }, /* INF Quad, DB, selectable */
+ { RP_ID(0x0045), RP_CAP(8, 0) }, /* INF Octa, DB, selectable */
+ { RP_ID(0x0046), RP_CAP(4, 0) }, /* INF Quad, ext interface */
+ { RP_ID(0x0047), RP_CAP(4, 0) }, /* INF Quad, RJ45 */
+ { RP_ID(0x004a), RP_CAP(4, 0) }, /* INF Plus, Quad */
+ { RP_ID(0x004b), RP_CAP(8, 0) }, /* INF Plus, Octa */
+ { RP_ID(0x004c), RP_CAP(8, 0) }, /* INF III, Octa */
+ { RP_ID(0x004d), RP_CAP(4, 0) }, /* INF III, Quad */
+ { RP_ID(0x004e), RP_CAP(2, 0) }, /* INF Plus, 2, RS232 */
+ { RP_ID(0x004f), RP_CAP(2, 1) }, /* INF Plus, 2, SMPTE */
+ { RP_ID(0x0050), RP_CAP(4, 0) }, /* INF Plus, Quad, RJ45 */
+ { RP_ID(0x0051), RP_CAP(8, 0) }, /* INF Plus, Octa, RJ45 */
+ { RP_ID(0x0052), RP_CAP(8, 1) }, /* INF Octa, SMPTE */
+
+ /* RocketPort EXPRESS cards */
+
+ { RP_ID(0x0060), RP_CAP(8, 0) }, /* EXP Octa, RJ45, selectable */
+ { RP_ID(0x0061), RP_CAP(32, 0) }, /* EXP 32, ext interface */
+ { RP_ID(0x0062), RP_CAP(8, 0) }, /* EXP Octa, ext interface */
+ { RP_ID(0x0063), RP_CAP(16, 0) }, /* EXP 16, ext interface */
+ { RP_ID(0x0064), RP_CAP(4, 0) }, /* EXP Quad, DB, selectable */
+ { RP_ID(0x0065), RP_CAP(8, 0) }, /* EXP Octa, DB, selectable */
+ { RP_ID(0x0066), RP_CAP(4, 0) }, /* EXP Quad, ext interface */
+ { RP_ID(0x0067), RP_CAP(4, 0) }, /* EXP Quad, RJ45 */
+ { RP_ID(0x0068), RP_CAP(8, 0) }, /* EXP Octa, RJ11 */
+ { RP_ID(0x0072), RP_CAP(8, 1) }, /* EXP Octa, SMPTE */
+ { }
+};
+MODULE_DEVICE_TABLE(pci, rp2_pci_tbl);
+
+static struct pci_driver rp2_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = rp2_pci_tbl,
+ .probe = rp2_probe,
+ .remove = rp2_remove,
+};
+
+static int __init rp2_uart_init(void)
+{
+ int rc;
+
+ rc = uart_register_driver(&rp2_uart_driver);
+ if (rc)
+ return rc;
+
+ rc = pci_register_driver(&rp2_pci_driver);
+ if (rc) {
+ uart_unregister_driver(&rp2_uart_driver);
+ return rc;
+ }
+
+ return 0;
+}
+
+static void __exit rp2_uart_exit(void)
+{
+ pci_unregister_driver(&rp2_pci_driver);
+ uart_unregister_driver(&rp2_uart_driver);
+}
+
+module_init(rp2_uart_init);
+module_exit(rp2_uart_exit);
+
+MODULE_DESCRIPTION("Comtrol RocketPort EXPRESS/INFINITY driver");
+MODULE_AUTHOR("Kevin Cernekee <[email protected]>");
+MODULE_LICENSE("GPL v2");
+MODULE_FIRMWARE(RP2_FW_NAME);
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c
index 5d4b9b4..af6b3e3 100644
--- a/drivers/tty/serial/sa1100.c
+++ b/drivers/tty/serial/sa1100.c
@@ -188,7 +188,6 @@
static void
sa1100_rx_chars(struct sa1100_port *sport)
{
- struct tty_struct *tty = sport->port.state->port.tty;
unsigned int status, ch, flg;
status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
@@ -233,7 +232,7 @@
status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
UTSR0_TO_SM(UART_GET_UTSR0(sport));
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&sport->port.state->port);
}
static void sa1100_tx_chars(struct sa1100_port *sport)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index e514b3a4..2769a38 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -47,7 +47,6 @@
#include <asm/irq.h>
#include <mach/hardware.h>
-#include <mach/map.h>
#include <plat/regs-serial.h>
#include <plat/clock.h>
@@ -221,7 +220,6 @@
{
struct s3c24xx_uart_port *ourport = dev_id;
struct uart_port *port = &ourport->port;
- struct tty_struct *tty = port->state->port.tty;
unsigned int ufcon, ch, flag, ufstat, uerstat;
unsigned long flags;
int max_count = 64;
@@ -299,7 +297,7 @@
ignore_char:
continue;
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
out:
spin_unlock_irqrestore(&port->lock, flags);
@@ -1143,8 +1141,13 @@
dbg("resource %p (%lx..%lx)\n", res, res->start, res->end);
+ port->membase = devm_ioremap(port->dev, res->start, resource_size(res));
+ if (!port->membase) {
+ dev_err(port->dev, "failed to remap controller address\n");
+ return -EBUSY;
+ }
+
port->mapbase = res->start;
- port->membase = S3C_VA_UART + (res->start & 0xfffff);
ret = platform_get_irq(platdev, 0);
if (ret < 0)
port->irq = 0;
@@ -1724,8 +1727,6 @@
{},
};
MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
-#else
-#define s3c24xx_uart_dt_match NULL
#endif
static struct platform_driver samsung_serial_driver = {
@@ -1736,7 +1737,7 @@
.name = "samsung-uart",
.owner = THIS_MODULE,
.pm = SERIAL_SAMSUNG_PM_OPS,
- .of_match_table = s3c24xx_uart_dt_match,
+ .of_match_table = of_match_ptr(s3c24xx_uart_dt_match),
},
};
diff --git a/drivers/tty/serial/sb1250-duart.c b/drivers/tty/serial/sb1250-duart.c
index f76b1688..a7cdec29 100644
--- a/drivers/tty/serial/sb1250-duart.c
+++ b/drivers/tty/serial/sb1250-duart.c
@@ -384,7 +384,7 @@
uart_insert_char(uport, status, M_DUART_OVRUN_ERR, ch, flag);
}
- tty_flip_buffer_push(uport->state->port.tty);
+ tty_flip_buffer_push(&uport->state->port);
}
static void sbd_transmit_chars(struct sbd_port *sport)
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c
index aced1dd..c973568 100644
--- a/drivers/tty/serial/sc26xx.c
+++ b/drivers/tty/serial/sc26xx.c
@@ -136,16 +136,17 @@
WRITE_SC(port, IMR, up->imr);
}
-static struct tty_struct *receive_chars(struct uart_port *port)
+static bool receive_chars(struct uart_port *port)
{
- struct tty_struct *tty = NULL;
+ struct tty_port *tport = NULL;
int limit = 10000;
unsigned char ch;
char flag;
u8 status;
+ /* FIXME what is this trying to achieve? */
if (port->state != NULL) /* Unopened serial console */
- tty = port->state->port.tty;
+ tport = &port->state->port;
while (limit-- > 0) {
status = READ_SC_PORT(port, SR);
@@ -185,9 +186,9 @@
if (status & port->ignore_status_mask)
continue;
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(tport, ch, flag);
}
- return tty;
+ return !!tport;
}
static void transmit_chars(struct uart_port *port)
@@ -217,36 +218,36 @@
static irqreturn_t sc26xx_interrupt(int irq, void *dev_id)
{
struct uart_sc26xx_port *up = dev_id;
- struct tty_struct *tty;
unsigned long flags;
+ bool push;
u8 isr;
spin_lock_irqsave(&up->port[0].lock, flags);
- tty = NULL;
+ push = false;
isr = READ_SC(&up->port[0], ISR);
if (isr & ISR_TXRDYA)
transmit_chars(&up->port[0]);
if (isr & ISR_RXRDYA)
- tty = receive_chars(&up->port[0]);
+ push = receive_chars(&up->port[0]);
spin_unlock(&up->port[0].lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&up->port[0].state->port);
spin_lock(&up->port[1].lock);
- tty = NULL;
+ push = false;
if (isr & ISR_TXRDYB)
transmit_chars(&up->port[1]);
if (isr & ISR_RXRDYB)
- tty = receive_chars(&up->port[1]);
+ push = receive_chars(&up->port[1]);
spin_unlock_irqrestore(&up->port[1].lock, flags);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (push)
+ tty_flip_buffer_push(&up->port[1].state->port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index 418b495..caccbe8 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -23,8 +23,9 @@
#include <linux/io.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
+#include <linux/spinlock.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/sccnxp.h>
+#include <linux/platform_data/serial-sccnxp.h>
#define SCCNXP_NAME "uart-sccnxp"
#define SCCNXP_MAJOR 204
@@ -106,6 +107,7 @@
struct sccnxp_port {
struct uart_driver uart;
struct uart_port port[SCCNXP_MAX_UARTS];
+ bool opened[SCCNXP_MAX_UARTS];
const char *name;
int irq;
@@ -122,7 +124,10 @@
struct console console;
#endif
- struct mutex sccnxp_mutex;
+ spinlock_t lock;
+
+ bool poll;
+ struct timer_list timer;
struct sccnxp_pdata pdata;
};
@@ -174,14 +179,12 @@
return 1;
}
-struct baud_table {
+static const struct {
u8 csr;
u8 acr;
u8 mr0;
int baud;
-};
-
-const struct baud_table baud_std[] = {
+} baud_std[] = {
{ 0, ACR_BAUD0, MR0_BAUD_NORMAL, 50, },
{ 0, ACR_BAUD1, MR0_BAUD_NORMAL, 75, },
{ 1, ACR_BAUD0, MR0_BAUD_NORMAL, 110, },
@@ -285,10 +288,6 @@
{
u8 sr;
unsigned int ch, flag;
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
-
- if (!tty)
- return;
for (;;) {
sr = sccnxp_port_read(port, SCCNXP_SR_REG);
@@ -304,14 +303,19 @@
if (unlikely(sr)) {
if (sr & SR_BRK) {
port->icount.brk++;
+ sccnxp_port_write(port, SCCNXP_CR_REG,
+ CR_CMD_BREAK_RESET);
if (uart_handle_break(port))
continue;
} else if (sr & SR_PE)
port->icount.parity++;
else if (sr & SR_FE)
port->icount.frame++;
- else if (sr & SR_OVR)
+ else if (sr & SR_OVR) {
port->icount.overrun++;
+ sccnxp_port_write(port, SCCNXP_CR_REG,
+ CR_CMD_STATUS_RESET);
+ }
sr &= port->read_status_mask;
if (sr & SR_BRK)
@@ -333,9 +337,7 @@
uart_insert_char(port, sr, SR_OVR, ch, flag);
}
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->state->port);
}
static void sccnxp_handle_tx(struct uart_port *port)
@@ -377,31 +379,48 @@
uart_write_wakeup(port);
}
-static irqreturn_t sccnxp_ist(int irq, void *dev_id)
+static void sccnxp_handle_events(struct sccnxp_port *s)
{
int i;
u8 isr;
- struct sccnxp_port *s = (struct sccnxp_port *)dev_id;
- mutex_lock(&s->sccnxp_mutex);
-
- for (;;) {
+ do {
isr = sccnxp_read(&s->port[0], SCCNXP_ISR_REG);
isr &= s->imr;
if (!isr)
break;
- dev_dbg(s->port[0].dev, "IRQ status: 0x%02x\n", isr);
-
for (i = 0; i < s->uart.nr; i++) {
- if (isr & ISR_RXRDY(i))
+ if (s->opened[i] && (isr & ISR_RXRDY(i)))
sccnxp_handle_rx(&s->port[i]);
- if (isr & ISR_TXRDY(i))
+ if (s->opened[i] && (isr & ISR_TXRDY(i)))
sccnxp_handle_tx(&s->port[i]);
}
- }
+ } while (1);
+}
- mutex_unlock(&s->sccnxp_mutex);
+static void sccnxp_timer(unsigned long data)
+{
+ struct sccnxp_port *s = (struct sccnxp_port *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&s->lock, flags);
+ sccnxp_handle_events(s);
+ spin_unlock_irqrestore(&s->lock, flags);
+
+ if (!timer_pending(&s->timer))
+ mod_timer(&s->timer, jiffies +
+ usecs_to_jiffies(s->pdata.poll_time_us));
+}
+
+static irqreturn_t sccnxp_ist(int irq, void *dev_id)
+{
+ struct sccnxp_port *s = (struct sccnxp_port *)dev_id;
+ unsigned long flags;
+
+ spin_lock_irqsave(&s->lock, flags);
+ sccnxp_handle_events(s);
+ spin_unlock_irqrestore(&s->lock, flags);
return IRQ_HANDLED;
}
@@ -409,8 +428,9 @@
static void sccnxp_start_tx(struct uart_port *port)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
/* Set direction to output */
if (s->flags & SCCNXP_HAVE_IO)
@@ -418,7 +438,7 @@
sccnxp_enable_irq(port, IMR_TXRDY);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static void sccnxp_stop_tx(struct uart_port *port)
@@ -429,20 +449,22 @@
static void sccnxp_stop_rx(struct uart_port *port)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_DISABLE);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static unsigned int sccnxp_tx_empty(struct uart_port *port)
{
u8 val;
+ unsigned long flags;
struct sccnxp_port *s = dev_get_drvdata(port->dev);
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
val = sccnxp_port_read(port, SCCNXP_SR_REG);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
return (val & SR_TXEMT) ? TIOCSER_TEMT : 0;
}
@@ -455,28 +477,30 @@
static void sccnxp_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
if (!(s->flags & SCCNXP_HAVE_IO))
return;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
sccnxp_set_bit(port, DTR_OP, mctrl & TIOCM_DTR);
sccnxp_set_bit(port, RTS_OP, mctrl & TIOCM_RTS);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static unsigned int sccnxp_get_mctrl(struct uart_port *port)
{
u8 bitmask, ipr;
+ unsigned long flags;
struct sccnxp_port *s = dev_get_drvdata(port->dev);
unsigned int mctrl = TIOCM_DSR | TIOCM_CTS | TIOCM_CAR;
if (!(s->flags & SCCNXP_HAVE_IO))
return mctrl;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
ipr = ~sccnxp_read(port, SCCNXP_IPCR_REG);
@@ -505,7 +529,7 @@
mctrl |= (ipr & bitmask) ? TIOCM_RNG : 0;
}
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
return mctrl;
}
@@ -513,21 +537,23 @@
static void sccnxp_break_ctl(struct uart_port *port, int break_state)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
sccnxp_port_write(port, SCCNXP_CR_REG, break_state ?
CR_CMD_START_BREAK : CR_CMD_STOP_BREAK);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static void sccnxp_set_termios(struct uart_port *port,
struct ktermios *termios, struct ktermios *old)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
u8 mr1, mr2;
int baud;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
/* Mask termios capabilities we don't support */
termios->c_cflag &= ~CMSPAR;
@@ -594,20 +620,22 @@
/* Update timeout according to new baud rate */
uart_update_timeout(port, termios->c_cflag, baud);
+ /* Report actual baudrate back to core */
if (tty_termios_baud_rate(termios))
tty_termios_encode_baud_rate(termios, baud, baud);
/* Enable RX & TX */
sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_ENABLE | CR_TX_ENABLE);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static int sccnxp_startup(struct uart_port *port)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
if (s->flags & SCCNXP_HAVE_IO) {
/* Outputs are controlled manually */
@@ -626,7 +654,9 @@
/* Enable RX interrupt */
sccnxp_enable_irq(port, IMR_RXRDY);
- mutex_unlock(&s->sccnxp_mutex);
+ s->opened[port->line] = 1;
+
+ spin_unlock_irqrestore(&s->lock, flags);
return 0;
}
@@ -634,8 +664,11 @@
static void sccnxp_shutdown(struct uart_port *port)
{
struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
+
+ s->opened[port->line] = 0;
/* Disable interrupts */
sccnxp_disable_irq(port, IMR_TXRDY | IMR_RXRDY);
@@ -647,7 +680,7 @@
if (s->flags & SCCNXP_HAVE_IO)
sccnxp_set_bit(port, DIR_OP, 0);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static const char *sccnxp_type(struct uart_port *port)
@@ -721,10 +754,11 @@
{
struct sccnxp_port *s = (struct sccnxp_port *)co->data;
struct uart_port *port = &s->port[co->index];
+ unsigned long flags;
- mutex_lock(&s->sccnxp_mutex);
+ spin_lock_irqsave(&s->lock, flags);
uart_console_write(port, c, n, sccnxp_console_putchar);
- mutex_unlock(&s->sccnxp_mutex);
+ spin_unlock_irqrestore(&s->lock, flags);
}
static int sccnxp_console_setup(struct console *co, char *options)
@@ -763,7 +797,7 @@
}
platform_set_drvdata(pdev, s);
- mutex_init(&s->sccnxp_mutex);
+ spin_lock_init(&s->lock);
/* Individual chip settings */
switch (chiptype) {
@@ -860,11 +894,19 @@
} else
memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
- s->irq = platform_get_irq(pdev, 0);
- if (s->irq <= 0) {
- dev_err(&pdev->dev, "Missing irq resource data\n");
- ret = -ENXIO;
- goto err_out;
+ if (s->pdata.poll_time_us) {
+ dev_info(&pdev->dev, "Using poll mode, resolution %u usecs\n",
+ s->pdata.poll_time_us);
+ s->poll = 1;
+ }
+
+ if (!s->poll) {
+ s->irq = platform_get_irq(pdev, 0);
+ if (s->irq < 0) {
+ dev_err(&pdev->dev, "Missing irq resource data\n");
+ ret = -ENXIO;
+ goto err_out;
+ }
}
/* Check input frequency */
@@ -929,13 +971,23 @@
if (s->pdata.init)
s->pdata.init();
- ret = devm_request_threaded_irq(&pdev->dev, s->irq, NULL, sccnxp_ist,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- dev_name(&pdev->dev), s);
- if (!ret)
- return 0;
+ if (!s->poll) {
+ ret = devm_request_threaded_irq(&pdev->dev, s->irq, NULL,
+ sccnxp_ist,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ dev_name(&pdev->dev), s);
+ if (!ret)
+ return 0;
- dev_err(&pdev->dev, "Unable to reguest IRQ %i\n", s->irq);
+ dev_err(&pdev->dev, "Unable to reguest IRQ %i\n", s->irq);
+ } else {
+ init_timer(&s->timer);
+ setup_timer(&s->timer, sccnxp_timer, (unsigned long)s);
+ mod_timer(&s->timer, jiffies +
+ usecs_to_jiffies(s->pdata.poll_time_us));
+ return 0;
+ }
err_out:
platform_set_drvdata(pdev, NULL);
@@ -948,7 +1000,10 @@
int i;
struct sccnxp_port *s = platform_get_drvdata(pdev);
- devm_free_irq(&pdev->dev, s->irq, s);
+ if (!s->poll)
+ devm_free_irq(&pdev->dev, s->irq, s);
+ else
+ del_timer_sync(&s->timer);
for (i = 0; i < s->uart.nr; i++)
uart_remove_one_port(&s->uart, &s->port[i]);
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
new file mode 100644
index 0000000..4f5e629
--- /dev/null
+++ b/drivers/tty/serial/serial-tegra.c
@@ -0,0 +1,1402 @@
+/*
+ * serial_tegra.c
+ *
+ * High-speed serial driver for NVIDIA Tegra SoCs
+ *
+ * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author: Laxman Dewangan <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pagemap.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/termios.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+
+#include <linux/clk/tegra.h>
+
+#define TEGRA_UART_TYPE "TEGRA_UART"
+#define TX_EMPTY_STATUS (UART_LSR_TEMT | UART_LSR_THRE)
+#define BYTES_TO_ALIGN(x) ((unsigned long)(x) & 0x3)
+
+#define TEGRA_UART_RX_DMA_BUFFER_SIZE 4096
+#define TEGRA_UART_LSR_TXFIFO_FULL 0x100
+#define TEGRA_UART_IER_EORD 0x20
+#define TEGRA_UART_MCR_RTS_EN 0x40
+#define TEGRA_UART_MCR_CTS_EN 0x20
+#define TEGRA_UART_LSR_ANY (UART_LSR_OE | UART_LSR_BI | \
+ UART_LSR_PE | UART_LSR_FE)
+#define TEGRA_UART_IRDA_CSR 0x08
+#define TEGRA_UART_SIR_ENABLED 0x80
+
+#define TEGRA_UART_TX_PIO 1
+#define TEGRA_UART_TX_DMA 2
+#define TEGRA_UART_MIN_DMA 16
+#define TEGRA_UART_FIFO_SIZE 32
+
+/*
+ * Tx fifo trigger level setting in tegra uart is in
+ * reverse way then conventional uart.
+ */
+#define TEGRA_UART_TX_TRIG_16B 0x00
+#define TEGRA_UART_TX_TRIG_8B 0x10
+#define TEGRA_UART_TX_TRIG_4B 0x20
+#define TEGRA_UART_TX_TRIG_1B 0x30
+
+#define TEGRA_UART_MAXIMUM 5
+
+/* Default UART setting when started: 115200 no parity, stop, 8 data bits */
+#define TEGRA_UART_DEFAULT_BAUD 115200
+#define TEGRA_UART_DEFAULT_LSR UART_LCR_WLEN8
+
+/* Tx transfer mode */
+#define TEGRA_TX_PIO 1
+#define TEGRA_TX_DMA 2
+
+/**
+ * tegra_uart_chip_data: SOC specific data.
+ *
+ * @tx_fifo_full_status: Status flag available for checking tx fifo full.
+ * @allow_txfifo_reset_fifo_mode: allow_tx fifo reset with fifo mode or not.
+ * Tegra30 does not allow this.
+ * @support_clk_src_div: Clock source support the clock divider.
+ */
+struct tegra_uart_chip_data {
+ bool tx_fifo_full_status;
+ bool allow_txfifo_reset_fifo_mode;
+ bool support_clk_src_div;
+};
+
+struct tegra_uart_port {
+ struct uart_port uport;
+ const struct tegra_uart_chip_data *cdata;
+
+ struct clk *uart_clk;
+ unsigned int current_baud;
+
+ /* Register shadow */
+ unsigned long fcr_shadow;
+ unsigned long mcr_shadow;
+ unsigned long lcr_shadow;
+ unsigned long ier_shadow;
+ bool rts_active;
+
+ int tx_in_progress;
+ unsigned int tx_bytes;
+
+ bool enable_modem_interrupt;
+
+ bool rx_timeout;
+ int rx_in_progress;
+ int symb_bit;
+ int dma_req_sel;
+
+ struct dma_chan *rx_dma_chan;
+ struct dma_chan *tx_dma_chan;
+ dma_addr_t rx_dma_buf_phys;
+ dma_addr_t tx_dma_buf_phys;
+ unsigned char *rx_dma_buf_virt;
+ unsigned char *tx_dma_buf_virt;
+ struct dma_async_tx_descriptor *tx_dma_desc;
+ struct dma_async_tx_descriptor *rx_dma_desc;
+ dma_cookie_t tx_cookie;
+ dma_cookie_t rx_cookie;
+ int tx_bytes_requested;
+ int rx_bytes_requested;
+};
+
+static void tegra_uart_start_next_tx(struct tegra_uart_port *tup);
+static int tegra_uart_start_rx_dma(struct tegra_uart_port *tup);
+
+static inline unsigned long tegra_uart_read(struct tegra_uart_port *tup,
+ unsigned long reg)
+{
+ return readl(tup->uport.membase + (reg << tup->uport.regshift));
+}
+
+static inline void tegra_uart_write(struct tegra_uart_port *tup, unsigned val,
+ unsigned long reg)
+{
+ writel(val, tup->uport.membase + (reg << tup->uport.regshift));
+}
+
+static inline struct tegra_uart_port *to_tegra_uport(struct uart_port *u)
+{
+ return container_of(u, struct tegra_uart_port, uport);
+}
+
+static unsigned int tegra_uart_get_mctrl(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+
+ /*
+ * RI - Ring detector is active
+ * CD/DCD/CAR - Carrier detect is always active. For some reason
+ * linux has different names for carrier detect.
+ * DSR - Data Set ready is active as the hardware doesn't support it.
+ * Don't know if the linux support this yet?
+ * CTS - Clear to send. Always set to active, as the hardware handles
+ * CTS automatically.
+ */
+ if (tup->enable_modem_interrupt)
+ return TIOCM_RI | TIOCM_CD | TIOCM_DSR | TIOCM_CTS;
+ return TIOCM_CTS;
+}
+
+static void set_rts(struct tegra_uart_port *tup, bool active)
+{
+ unsigned long mcr;
+
+ mcr = tup->mcr_shadow;
+ if (active)
+ mcr |= TEGRA_UART_MCR_RTS_EN;
+ else
+ mcr &= ~TEGRA_UART_MCR_RTS_EN;
+ if (mcr != tup->mcr_shadow) {
+ tegra_uart_write(tup, mcr, UART_MCR);
+ tup->mcr_shadow = mcr;
+ }
+ return;
+}
+
+static void set_dtr(struct tegra_uart_port *tup, bool active)
+{
+ unsigned long mcr;
+
+ mcr = tup->mcr_shadow;
+ if (active)
+ mcr |= UART_MCR_DTR;
+ else
+ mcr &= ~UART_MCR_DTR;
+ if (mcr != tup->mcr_shadow) {
+ tegra_uart_write(tup, mcr, UART_MCR);
+ tup->mcr_shadow = mcr;
+ }
+ return;
+}
+
+static void tegra_uart_set_mctrl(struct uart_port *u, unsigned int mctrl)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ unsigned long mcr;
+ int dtr_enable;
+
+ mcr = tup->mcr_shadow;
+ tup->rts_active = !!(mctrl & TIOCM_RTS);
+ set_rts(tup, tup->rts_active);
+
+ dtr_enable = !!(mctrl & TIOCM_DTR);
+ set_dtr(tup, dtr_enable);
+ return;
+}
+
+static void tegra_uart_break_ctl(struct uart_port *u, int break_ctl)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ unsigned long lcr;
+
+ lcr = tup->lcr_shadow;
+ if (break_ctl)
+ lcr |= UART_LCR_SBC;
+ else
+ lcr &= ~UART_LCR_SBC;
+ tegra_uart_write(tup, lcr, UART_LCR);
+ tup->lcr_shadow = lcr;
+}
+
+/* Wait for a symbol-time. */
+static void tegra_uart_wait_sym_time(struct tegra_uart_port *tup,
+ unsigned int syms)
+{
+ if (tup->current_baud)
+ udelay(DIV_ROUND_UP(syms * tup->symb_bit * 1000000,
+ tup->current_baud));
+}
+
+static void tegra_uart_fifo_reset(struct tegra_uart_port *tup, u8 fcr_bits)
+{
+ unsigned long fcr = tup->fcr_shadow;
+
+ if (tup->cdata->allow_txfifo_reset_fifo_mode) {
+ fcr |= fcr_bits & (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
+ tegra_uart_write(tup, fcr, UART_FCR);
+ } else {
+ fcr &= ~UART_FCR_ENABLE_FIFO;
+ tegra_uart_write(tup, fcr, UART_FCR);
+ udelay(60);
+ fcr |= fcr_bits & (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
+ tegra_uart_write(tup, fcr, UART_FCR);
+ fcr |= UART_FCR_ENABLE_FIFO;
+ tegra_uart_write(tup, fcr, UART_FCR);
+ }
+
+ /* Dummy read to ensure the write is posted */
+ tegra_uart_read(tup, UART_SCR);
+
+ /* Wait for the flush to propagate. */
+ tegra_uart_wait_sym_time(tup, 1);
+}
+
+static int tegra_set_baudrate(struct tegra_uart_port *tup, unsigned int baud)
+{
+ unsigned long rate;
+ unsigned int divisor;
+ unsigned long lcr;
+ int ret;
+
+ if (tup->current_baud == baud)
+ return 0;
+
+ if (tup->cdata->support_clk_src_div) {
+ rate = baud * 16;
+ ret = clk_set_rate(tup->uart_clk, rate);
+ if (ret < 0) {
+ dev_err(tup->uport.dev,
+ "clk_set_rate() failed for rate %lu\n", rate);
+ return ret;
+ }
+ divisor = 1;
+ } else {
+ rate = clk_get_rate(tup->uart_clk);
+ divisor = DIV_ROUND_CLOSEST(rate, baud * 16);
+ }
+
+ lcr = tup->lcr_shadow;
+ lcr |= UART_LCR_DLAB;
+ tegra_uart_write(tup, lcr, UART_LCR);
+
+ tegra_uart_write(tup, divisor & 0xFF, UART_TX);
+ tegra_uart_write(tup, ((divisor >> 8) & 0xFF), UART_IER);
+
+ lcr &= ~UART_LCR_DLAB;
+ tegra_uart_write(tup, lcr, UART_LCR);
+
+ /* Dummy read to ensure the write is posted */
+ tegra_uart_read(tup, UART_SCR);
+
+ tup->current_baud = baud;
+
+ /* wait two character intervals at new rate */
+ tegra_uart_wait_sym_time(tup, 2);
+ return 0;
+}
+
+static char tegra_uart_decode_rx_error(struct tegra_uart_port *tup,
+ unsigned long lsr)
+{
+ char flag = TTY_NORMAL;
+
+ if (unlikely(lsr & TEGRA_UART_LSR_ANY)) {
+ if (lsr & UART_LSR_OE) {
+ /* Overrrun error */
+ flag |= TTY_OVERRUN;
+ tup->uport.icount.overrun++;
+ dev_err(tup->uport.dev, "Got overrun errors\n");
+ } else if (lsr & UART_LSR_PE) {
+ /* Parity error */
+ flag |= TTY_PARITY;
+ tup->uport.icount.parity++;
+ dev_err(tup->uport.dev, "Got Parity errors\n");
+ } else if (lsr & UART_LSR_FE) {
+ flag |= TTY_FRAME;
+ tup->uport.icount.frame++;
+ dev_err(tup->uport.dev, "Got frame errors\n");
+ } else if (lsr & UART_LSR_BI) {
+ dev_err(tup->uport.dev, "Got Break\n");
+ tup->uport.icount.brk++;
+ /* If FIFO read error without any data, reset Rx FIFO */
+ if (!(lsr & UART_LSR_DR) && (lsr & UART_LSR_FIFOE))
+ tegra_uart_fifo_reset(tup, UART_FCR_CLEAR_RCVR);
+ }
+ }
+ return flag;
+}
+
+static int tegra_uart_request_port(struct uart_port *u)
+{
+ return 0;
+}
+
+static void tegra_uart_release_port(struct uart_port *u)
+{
+ /* Nothing to do here */
+}
+
+static void tegra_uart_fill_tx_fifo(struct tegra_uart_port *tup, int max_bytes)
+{
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+ int i;
+
+ for (i = 0; i < max_bytes; i++) {
+ BUG_ON(uart_circ_empty(xmit));
+ if (tup->cdata->tx_fifo_full_status) {
+ unsigned long lsr = tegra_uart_read(tup, UART_LSR);
+ if ((lsr & TEGRA_UART_LSR_TXFIFO_FULL))
+ break;
+ }
+ tegra_uart_write(tup, xmit->buf[xmit->tail], UART_TX);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ tup->uport.icount.tx++;
+ }
+}
+
+static void tegra_uart_start_pio_tx(struct tegra_uart_port *tup,
+ unsigned int bytes)
+{
+ if (bytes > TEGRA_UART_MIN_DMA)
+ bytes = TEGRA_UART_MIN_DMA;
+
+ tup->tx_in_progress = TEGRA_UART_TX_PIO;
+ tup->tx_bytes = bytes;
+ tup->ier_shadow |= UART_IER_THRI;
+ tegra_uart_write(tup, tup->ier_shadow, UART_IER);
+}
+
+static void tegra_uart_tx_dma_complete(void *args)
+{
+ struct tegra_uart_port *tup = args;
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+ struct dma_tx_state state;
+ unsigned long flags;
+ int count;
+
+ dmaengine_tx_status(tup->tx_dma_chan, tup->rx_cookie, &state);
+ count = tup->tx_bytes_requested - state.residue;
+ async_tx_ack(tup->tx_dma_desc);
+ spin_lock_irqsave(&tup->uport.lock, flags);
+ xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
+ tup->tx_in_progress = 0;
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&tup->uport);
+ tegra_uart_start_next_tx(tup);
+ spin_unlock_irqrestore(&tup->uport.lock, flags);
+}
+
+static int tegra_uart_start_tx_dma(struct tegra_uart_port *tup,
+ unsigned long count)
+{
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+ dma_addr_t tx_phys_addr;
+
+ dma_sync_single_for_device(tup->uport.dev, tup->tx_dma_buf_phys,
+ UART_XMIT_SIZE, DMA_TO_DEVICE);
+
+ tup->tx_bytes = count & ~(0xF);
+ tx_phys_addr = tup->tx_dma_buf_phys + xmit->tail;
+ tup->tx_dma_desc = dmaengine_prep_slave_single(tup->tx_dma_chan,
+ tx_phys_addr, tup->tx_bytes, DMA_MEM_TO_DEV,
+ DMA_PREP_INTERRUPT);
+ if (!tup->tx_dma_desc) {
+ dev_err(tup->uport.dev, "Not able to get desc for Tx\n");
+ return -EIO;
+ }
+
+ tup->tx_dma_desc->callback = tegra_uart_tx_dma_complete;
+ tup->tx_dma_desc->callback_param = tup;
+ tup->tx_in_progress = TEGRA_UART_TX_DMA;
+ tup->tx_bytes_requested = tup->tx_bytes;
+ tup->tx_cookie = dmaengine_submit(tup->tx_dma_desc);
+ dma_async_issue_pending(tup->tx_dma_chan);
+ return 0;
+}
+
+static void tegra_uart_start_next_tx(struct tegra_uart_port *tup)
+{
+ unsigned long tail;
+ unsigned long count;
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+
+ tail = (unsigned long)&xmit->buf[xmit->tail];
+ count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
+ if (!count)
+ return;
+
+ if (count < TEGRA_UART_MIN_DMA)
+ tegra_uart_start_pio_tx(tup, count);
+ else if (BYTES_TO_ALIGN(tail) > 0)
+ tegra_uart_start_pio_tx(tup, BYTES_TO_ALIGN(tail));
+ else
+ tegra_uart_start_tx_dma(tup, count);
+}
+
+/* Called by serial core driver with u->lock taken. */
+static void tegra_uart_start_tx(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ struct circ_buf *xmit = &u->state->xmit;
+
+ if (!uart_circ_empty(xmit) && !tup->tx_in_progress)
+ tegra_uart_start_next_tx(tup);
+}
+
+static unsigned int tegra_uart_tx_empty(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ unsigned int ret = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&u->lock, flags);
+ if (!tup->tx_in_progress) {
+ unsigned long lsr = tegra_uart_read(tup, UART_LSR);
+ if ((lsr & TX_EMPTY_STATUS) == TX_EMPTY_STATUS)
+ ret = TIOCSER_TEMT;
+ }
+ spin_unlock_irqrestore(&u->lock, flags);
+ return ret;
+}
+
+static void tegra_uart_stop_tx(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+ struct dma_tx_state state;
+ int count;
+
+ dmaengine_terminate_all(tup->tx_dma_chan);
+ dmaengine_tx_status(tup->tx_dma_chan, tup->tx_cookie, &state);
+ count = tup->tx_bytes_requested - state.residue;
+ async_tx_ack(tup->tx_dma_desc);
+ xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
+ tup->tx_in_progress = 0;
+ return;
+}
+
+static void tegra_uart_handle_tx_pio(struct tegra_uart_port *tup)
+{
+ struct circ_buf *xmit = &tup->uport.state->xmit;
+
+ tegra_uart_fill_tx_fifo(tup, tup->tx_bytes);
+ tup->tx_in_progress = 0;
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&tup->uport);
+ tegra_uart_start_next_tx(tup);
+ return;
+}
+
+static void tegra_uart_handle_rx_pio(struct tegra_uart_port *tup,
+ struct tty_port *tty)
+{
+ do {
+ char flag = TTY_NORMAL;
+ unsigned long lsr = 0;
+ unsigned char ch;
+
+ lsr = tegra_uart_read(tup, UART_LSR);
+ if (!(lsr & UART_LSR_DR))
+ break;
+
+ flag = tegra_uart_decode_rx_error(tup, lsr);
+ ch = (unsigned char) tegra_uart_read(tup, UART_RX);
+ tup->uport.icount.rx++;
+
+ if (!uart_handle_sysrq_char(&tup->uport, ch) && tty)
+ tty_insert_flip_char(tty, ch, flag);
+ } while (1);
+
+ return;
+}
+
+static void tegra_uart_copy_rx_to_tty(struct tegra_uart_port *tup,
+ struct tty_port *tty, int count)
+{
+ int copied;
+
+ tup->uport.icount.rx += count;
+ if (!tty) {
+ dev_err(tup->uport.dev, "No tty port\n");
+ return;
+ }
+ dma_sync_single_for_cpu(tup->uport.dev, tup->rx_dma_buf_phys,
+ TEGRA_UART_RX_DMA_BUFFER_SIZE, DMA_FROM_DEVICE);
+ copied = tty_insert_flip_string(tty,
+ ((unsigned char *)(tup->rx_dma_buf_virt)), count);
+ if (copied != count) {
+ WARN_ON(1);
+ dev_err(tup->uport.dev, "RxData copy to tty layer failed\n");
+ }
+ dma_sync_single_for_device(tup->uport.dev, tup->rx_dma_buf_phys,
+ TEGRA_UART_RX_DMA_BUFFER_SIZE, DMA_TO_DEVICE);
+}
+
+static void tegra_uart_rx_dma_complete(void *args)
+{
+ struct tegra_uart_port *tup = args;
+ struct uart_port *u = &tup->uport;
+ int count = tup->rx_bytes_requested;
+ struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
+ struct tty_port *port = &u->state->port;
+ unsigned long flags;
+
+ async_tx_ack(tup->rx_dma_desc);
+ spin_lock_irqsave(&u->lock, flags);
+
+ /* Deactivate flow control to stop sender */
+ if (tup->rts_active)
+ set_rts(tup, false);
+
+ /* If we are here, DMA is stopped */
+ if (count)
+ tegra_uart_copy_rx_to_tty(tup, port, count);
+
+ tegra_uart_handle_rx_pio(tup, port);
+ if (tty) {
+ tty_flip_buffer_push(port);
+ tty_kref_put(tty);
+ }
+ tegra_uart_start_rx_dma(tup);
+
+ /* Activate flow control to start transfer */
+ if (tup->rts_active)
+ set_rts(tup, true);
+
+ spin_unlock_irqrestore(&u->lock, flags);
+}
+
+static void tegra_uart_handle_rx_dma(struct tegra_uart_port *tup)
+{
+ struct dma_tx_state state;
+ struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
+ struct tty_port *port = &tup->uport.state->port;
+ int count;
+
+ /* Deactivate flow control to stop sender */
+ if (tup->rts_active)
+ set_rts(tup, false);
+
+ dmaengine_terminate_all(tup->rx_dma_chan);
+ dmaengine_tx_status(tup->rx_dma_chan, tup->rx_cookie, &state);
+ count = tup->rx_bytes_requested - state.residue;
+
+ /* If we are here, DMA is stopped */
+ if (count)
+ tegra_uart_copy_rx_to_tty(tup, port, count);
+
+ tegra_uart_handle_rx_pio(tup, port);
+ if (tty) {
+ tty_flip_buffer_push(port);
+ tty_kref_put(tty);
+ }
+ tegra_uart_start_rx_dma(tup);
+
+ if (tup->rts_active)
+ set_rts(tup, true);
+}
+
+static int tegra_uart_start_rx_dma(struct tegra_uart_port *tup)
+{
+ unsigned int count = TEGRA_UART_RX_DMA_BUFFER_SIZE;
+
+ tup->rx_dma_desc = dmaengine_prep_slave_single(tup->rx_dma_chan,
+ tup->rx_dma_buf_phys, count, DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT);
+ if (!tup->rx_dma_desc) {
+ dev_err(tup->uport.dev, "Not able to get desc for Rx\n");
+ return -EIO;
+ }
+
+ tup->rx_dma_desc->callback = tegra_uart_rx_dma_complete;
+ tup->rx_dma_desc->callback_param = tup;
+ dma_sync_single_for_device(tup->uport.dev, tup->rx_dma_buf_phys,
+ count, DMA_TO_DEVICE);
+ tup->rx_bytes_requested = count;
+ tup->rx_cookie = dmaengine_submit(tup->rx_dma_desc);
+ dma_async_issue_pending(tup->rx_dma_chan);
+ return 0;
+}
+
+static void tegra_uart_handle_modem_signal_change(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ unsigned long msr;
+
+ msr = tegra_uart_read(tup, UART_MSR);
+ if (!(msr & UART_MSR_ANY_DELTA))
+ return;
+
+ if (msr & UART_MSR_TERI)
+ tup->uport.icount.rng++;
+ if (msr & UART_MSR_DDSR)
+ tup->uport.icount.dsr++;
+ /* We may only get DDCD when HW init and reset */
+ if (msr & UART_MSR_DDCD)
+ uart_handle_dcd_change(&tup->uport, msr & UART_MSR_DCD);
+ /* Will start/stop_tx accordingly */
+ if (msr & UART_MSR_DCTS)
+ uart_handle_cts_change(&tup->uport, msr & UART_MSR_CTS);
+ return;
+}
+
+static irqreturn_t tegra_uart_isr(int irq, void *data)
+{
+ struct tegra_uart_port *tup = data;
+ struct uart_port *u = &tup->uport;
+ unsigned long iir;
+ unsigned long ier;
+ bool is_rx_int = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&u->lock, flags);
+ while (1) {
+ iir = tegra_uart_read(tup, UART_IIR);
+ if (iir & UART_IIR_NO_INT) {
+ if (is_rx_int) {
+ tegra_uart_handle_rx_dma(tup);
+ if (tup->rx_in_progress) {
+ ier = tup->ier_shadow;
+ ier |= (UART_IER_RLSI | UART_IER_RTOIE |
+ TEGRA_UART_IER_EORD);
+ tup->ier_shadow = ier;
+ tegra_uart_write(tup, ier, UART_IER);
+ }
+ }
+ spin_unlock_irqrestore(&u->lock, flags);
+ return IRQ_HANDLED;
+ }
+
+ switch ((iir >> 1) & 0x7) {
+ case 0: /* Modem signal change interrupt */
+ tegra_uart_handle_modem_signal_change(u);
+ break;
+
+ case 1: /* Transmit interrupt only triggered when using PIO */
+ tup->ier_shadow &= ~UART_IER_THRI;
+ tegra_uart_write(tup, tup->ier_shadow, UART_IER);
+ tegra_uart_handle_tx_pio(tup);
+ break;
+
+ case 4: /* End of data */
+ case 6: /* Rx timeout */
+ case 2: /* Receive */
+ if (!is_rx_int) {
+ is_rx_int = true;
+ /* Disable Rx interrupts */
+ ier = tup->ier_shadow;
+ ier |= UART_IER_RDI;
+ tegra_uart_write(tup, ier, UART_IER);
+ ier &= ~(UART_IER_RDI | UART_IER_RLSI |
+ UART_IER_RTOIE | TEGRA_UART_IER_EORD);
+ tup->ier_shadow = ier;
+ tegra_uart_write(tup, ier, UART_IER);
+ }
+ break;
+
+ case 3: /* Receive error */
+ tegra_uart_decode_rx_error(tup,
+ tegra_uart_read(tup, UART_LSR));
+ break;
+
+ case 5: /* break nothing to handle */
+ case 7: /* break nothing to handle */
+ break;
+ }
+ }
+}
+
+static void tegra_uart_stop_rx(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
+ struct tty_port *port = &u->state->port;
+ struct dma_tx_state state;
+ unsigned long ier;
+ int count;
+
+ if (tup->rts_active)
+ set_rts(tup, false);
+
+ if (!tup->rx_in_progress)
+ return;
+
+ tegra_uart_wait_sym_time(tup, 1); /* wait a character interval */
+
+ ier = tup->ier_shadow;
+ ier &= ~(UART_IER_RDI | UART_IER_RLSI | UART_IER_RTOIE |
+ TEGRA_UART_IER_EORD);
+ tup->ier_shadow = ier;
+ tegra_uart_write(tup, ier, UART_IER);
+ tup->rx_in_progress = 0;
+ if (tup->rx_dma_chan) {
+ dmaengine_terminate_all(tup->rx_dma_chan);
+ dmaengine_tx_status(tup->rx_dma_chan, tup->rx_cookie, &state);
+ async_tx_ack(tup->rx_dma_desc);
+ count = tup->rx_bytes_requested - state.residue;
+ tegra_uart_copy_rx_to_tty(tup, port, count);
+ tegra_uart_handle_rx_pio(tup, port);
+ } else {
+ tegra_uart_handle_rx_pio(tup, port);
+ }
+ if (tty) {
+ tty_flip_buffer_push(port);
+ tty_kref_put(tty);
+ }
+ return;
+}
+
+static void tegra_uart_hw_deinit(struct tegra_uart_port *tup)
+{
+ unsigned long flags;
+ unsigned long char_time = DIV_ROUND_UP(10000000, tup->current_baud);
+ unsigned long fifo_empty_time = tup->uport.fifosize * char_time;
+ unsigned long wait_time;
+ unsigned long lsr;
+ unsigned long msr;
+ unsigned long mcr;
+
+ /* Disable interrupts */
+ tegra_uart_write(tup, 0, UART_IER);
+
+ lsr = tegra_uart_read(tup, UART_LSR);
+ if ((lsr & UART_LSR_TEMT) != UART_LSR_TEMT) {
+ msr = tegra_uart_read(tup, UART_MSR);
+ mcr = tegra_uart_read(tup, UART_MCR);
+ if ((mcr & TEGRA_UART_MCR_CTS_EN) && (msr & UART_MSR_CTS))
+ dev_err(tup->uport.dev,
+ "Tx Fifo not empty, CTS disabled, waiting\n");
+
+ /* Wait for Tx fifo to be empty */
+ while ((lsr & UART_LSR_TEMT) != UART_LSR_TEMT) {
+ wait_time = min(fifo_empty_time, 100lu);
+ udelay(wait_time);
+ fifo_empty_time -= wait_time;
+ if (!fifo_empty_time) {
+ msr = tegra_uart_read(tup, UART_MSR);
+ mcr = tegra_uart_read(tup, UART_MCR);
+ if ((mcr & TEGRA_UART_MCR_CTS_EN) &&
+ (msr & UART_MSR_CTS))
+ dev_err(tup->uport.dev,
+ "Slave not ready\n");
+ break;
+ }
+ lsr = tegra_uart_read(tup, UART_LSR);
+ }
+ }
+
+ spin_lock_irqsave(&tup->uport.lock, flags);
+ /* Reset the Rx and Tx FIFOs */
+ tegra_uart_fifo_reset(tup, UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR);
+ tup->current_baud = 0;
+ spin_unlock_irqrestore(&tup->uport.lock, flags);
+
+ clk_disable_unprepare(tup->uart_clk);
+}
+
+static int tegra_uart_hw_init(struct tegra_uart_port *tup)
+{
+ int ret;
+
+ tup->fcr_shadow = 0;
+ tup->mcr_shadow = 0;
+ tup->lcr_shadow = 0;
+ tup->ier_shadow = 0;
+ tup->current_baud = 0;
+
+ clk_prepare_enable(tup->uart_clk);
+
+ /* Reset the UART controller to clear all previous status.*/
+ tegra_periph_reset_assert(tup->uart_clk);
+ udelay(10);
+ tegra_periph_reset_deassert(tup->uart_clk);
+
+ tup->rx_in_progress = 0;
+ tup->tx_in_progress = 0;
+
+ /*
+ * Set the trigger level
+ *
+ * For PIO mode:
+ *
+ * For receive, this will interrupt the CPU after that many number of
+ * bytes are received, for the remaining bytes the receive timeout
+ * interrupt is received. Rx high watermark is set to 4.
+ *
+ * For transmit, if the trasnmit interrupt is enabled, this will
+ * interrupt the CPU when the number of entries in the FIFO reaches the
+ * low watermark. Tx low watermark is set to 16 bytes.
+ *
+ * For DMA mode:
+ *
+ * Set the Tx trigger to 16. This should match the DMA burst size that
+ * programmed in the DMA registers.
+ */
+ tup->fcr_shadow = UART_FCR_ENABLE_FIFO;
+ tup->fcr_shadow |= UART_FCR_R_TRIG_01;
+ tup->fcr_shadow |= TEGRA_UART_TX_TRIG_16B;
+ tegra_uart_write(tup, tup->fcr_shadow, UART_FCR);
+
+ /*
+ * Initialize the UART with default configuration
+ * (115200, N, 8, 1) so that the receive DMA buffer may be
+ * enqueued
+ */
+ tup->lcr_shadow = TEGRA_UART_DEFAULT_LSR;
+ tegra_set_baudrate(tup, TEGRA_UART_DEFAULT_BAUD);
+ tup->fcr_shadow |= UART_FCR_DMA_SELECT;
+ tegra_uart_write(tup, tup->fcr_shadow, UART_FCR);
+
+ ret = tegra_uart_start_rx_dma(tup);
+ if (ret < 0) {
+ dev_err(tup->uport.dev, "Not able to start Rx DMA\n");
+ return ret;
+ }
+ tup->rx_in_progress = 1;
+
+ /*
+ * Enable IE_RXS for the receive status interrupts like line errros.
+ * Enable IE_RX_TIMEOUT to get the bytes which cannot be DMA'd.
+ *
+ * If using DMA mode, enable EORD instead of receive interrupt which
+ * will interrupt after the UART is done with the receive instead of
+ * the interrupt when the FIFO "threshold" is reached.
+ *
+ * EORD is different interrupt than RX_TIMEOUT - RX_TIMEOUT occurs when
+ * the DATA is sitting in the FIFO and couldn't be transferred to the
+ * DMA as the DMA size alignment(4 bytes) is not met. EORD will be
+ * triggered when there is a pause of the incomming data stream for 4
+ * characters long.
+ *
+ * For pauses in the data which is not aligned to 4 bytes, we get
+ * both the EORD as well as RX_TIMEOUT - SW sees RX_TIMEOUT first
+ * then the EORD.
+ */
+ tup->ier_shadow = UART_IER_RLSI | UART_IER_RTOIE | TEGRA_UART_IER_EORD;
+ tegra_uart_write(tup, tup->ier_shadow, UART_IER);
+ return 0;
+}
+
+static int tegra_uart_dma_channel_allocate(struct tegra_uart_port *tup,
+ bool dma_to_memory)
+{
+ struct dma_chan *dma_chan;
+ unsigned char *dma_buf;
+ dma_addr_t dma_phys;
+ int ret;
+ struct dma_slave_config dma_sconfig;
+ dma_cap_mask_t mask;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+ dma_chan = dma_request_channel(mask, NULL, NULL);
+ if (!dma_chan) {
+ dev_err(tup->uport.dev,
+ "Dma channel is not available, will try later\n");
+ return -EPROBE_DEFER;
+ }
+
+ if (dma_to_memory) {
+ dma_buf = dma_alloc_coherent(tup->uport.dev,
+ TEGRA_UART_RX_DMA_BUFFER_SIZE,
+ &dma_phys, GFP_KERNEL);
+ if (!dma_buf) {
+ dev_err(tup->uport.dev,
+ "Not able to allocate the dma buffer\n");
+ dma_release_channel(dma_chan);
+ return -ENOMEM;
+ }
+ } else {
+ dma_phys = dma_map_single(tup->uport.dev,
+ tup->uport.state->xmit.buf, UART_XMIT_SIZE,
+ DMA_TO_DEVICE);
+ dma_buf = tup->uport.state->xmit.buf;
+ }
+
+ dma_sconfig.slave_id = tup->dma_req_sel;
+ if (dma_to_memory) {
+ dma_sconfig.src_addr = tup->uport.mapbase;
+ dma_sconfig.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ dma_sconfig.src_maxburst = 4;
+ } else {
+ dma_sconfig.dst_addr = tup->uport.mapbase;
+ dma_sconfig.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ dma_sconfig.dst_maxburst = 16;
+ }
+
+ ret = dmaengine_slave_config(dma_chan, &dma_sconfig);
+ if (ret < 0) {
+ dev_err(tup->uport.dev,
+ "Dma slave config failed, err = %d\n", ret);
+ goto scrub;
+ }
+
+ if (dma_to_memory) {
+ tup->rx_dma_chan = dma_chan;
+ tup->rx_dma_buf_virt = dma_buf;
+ tup->rx_dma_buf_phys = dma_phys;
+ } else {
+ tup->tx_dma_chan = dma_chan;
+ tup->tx_dma_buf_virt = dma_buf;
+ tup->tx_dma_buf_phys = dma_phys;
+ }
+ return 0;
+
+scrub:
+ dma_release_channel(dma_chan);
+ return ret;
+}
+
+static void tegra_uart_dma_channel_free(struct tegra_uart_port *tup,
+ bool dma_to_memory)
+{
+ struct dma_chan *dma_chan;
+
+ if (dma_to_memory) {
+ dma_free_coherent(tup->uport.dev, TEGRA_UART_RX_DMA_BUFFER_SIZE,
+ tup->rx_dma_buf_virt, tup->rx_dma_buf_phys);
+ dma_chan = tup->rx_dma_chan;
+ tup->rx_dma_chan = NULL;
+ tup->rx_dma_buf_phys = 0;
+ tup->rx_dma_buf_virt = NULL;
+ } else {
+ dma_unmap_single(tup->uport.dev, tup->tx_dma_buf_phys,
+ UART_XMIT_SIZE, DMA_TO_DEVICE);
+ dma_chan = tup->tx_dma_chan;
+ tup->tx_dma_chan = NULL;
+ tup->tx_dma_buf_phys = 0;
+ tup->tx_dma_buf_virt = NULL;
+ }
+ dma_release_channel(dma_chan);
+}
+
+static int tegra_uart_startup(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ int ret;
+
+ ret = tegra_uart_dma_channel_allocate(tup, false);
+ if (ret < 0) {
+ dev_err(u->dev, "Tx Dma allocation failed, err = %d\n", ret);
+ return ret;
+ }
+
+ ret = tegra_uart_dma_channel_allocate(tup, true);
+ if (ret < 0) {
+ dev_err(u->dev, "Rx Dma allocation failed, err = %d\n", ret);
+ goto fail_rx_dma;
+ }
+
+ ret = tegra_uart_hw_init(tup);
+ if (ret < 0) {
+ dev_err(u->dev, "Uart HW init failed, err = %d\n", ret);
+ goto fail_hw_init;
+ }
+
+ ret = request_irq(u->irq, tegra_uart_isr, IRQF_DISABLED,
+ dev_name(u->dev), tup);
+ if (ret < 0) {
+ dev_err(u->dev, "Failed to register ISR for IRQ %d\n", u->irq);
+ goto fail_hw_init;
+ }
+ return 0;
+
+fail_hw_init:
+ tegra_uart_dma_channel_free(tup, true);
+fail_rx_dma:
+ tegra_uart_dma_channel_free(tup, false);
+ return ret;
+}
+
+static void tegra_uart_shutdown(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+
+ tegra_uart_hw_deinit(tup);
+
+ tup->rx_in_progress = 0;
+ tup->tx_in_progress = 0;
+
+ tegra_uart_dma_channel_free(tup, true);
+ tegra_uart_dma_channel_free(tup, false);
+ free_irq(u->irq, tup);
+}
+
+static void tegra_uart_enable_ms(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+
+ if (tup->enable_modem_interrupt) {
+ tup->ier_shadow |= UART_IER_MSI;
+ tegra_uart_write(tup, tup->ier_shadow, UART_IER);
+ }
+}
+
+static void tegra_uart_set_termios(struct uart_port *u,
+ struct ktermios *termios, struct ktermios *oldtermios)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+ unsigned int baud;
+ unsigned long flags;
+ unsigned int lcr;
+ int symb_bit = 1;
+ struct clk *parent_clk = clk_get_parent(tup->uart_clk);
+ unsigned long parent_clk_rate = clk_get_rate(parent_clk);
+ int max_divider = (tup->cdata->support_clk_src_div) ? 0x7FFF : 0xFFFF;
+
+ max_divider *= 16;
+ spin_lock_irqsave(&u->lock, flags);
+
+ /* Changing configuration, it is safe to stop any rx now */
+ if (tup->rts_active)
+ set_rts(tup, false);
+
+ /* Clear all interrupts as configuration is going to be change */
+ tegra_uart_write(tup, tup->ier_shadow | UART_IER_RDI, UART_IER);
+ tegra_uart_read(tup, UART_IER);
+ tegra_uart_write(tup, 0, UART_IER);
+ tegra_uart_read(tup, UART_IER);
+
+ /* Parity */
+ lcr = tup->lcr_shadow;
+ lcr &= ~UART_LCR_PARITY;
+
+ /* CMSPAR isn't supported by this driver */
+ termios->c_cflag &= ~CMSPAR;
+
+ if ((termios->c_cflag & PARENB) == PARENB) {
+ symb_bit++;
+ if (termios->c_cflag & PARODD) {
+ lcr |= UART_LCR_PARITY;
+ lcr &= ~UART_LCR_EPAR;
+ lcr &= ~UART_LCR_SPAR;
+ } else {
+ lcr |= UART_LCR_PARITY;
+ lcr |= UART_LCR_EPAR;
+ lcr &= ~UART_LCR_SPAR;
+ }
+ }
+
+ lcr &= ~UART_LCR_WLEN8;
+ switch (termios->c_cflag & CSIZE) {
+ case CS5:
+ lcr |= UART_LCR_WLEN5;
+ symb_bit += 5;
+ break;
+ case CS6:
+ lcr |= UART_LCR_WLEN6;
+ symb_bit += 6;
+ break;
+ case CS7:
+ lcr |= UART_LCR_WLEN7;
+ symb_bit += 7;
+ break;
+ default:
+ lcr |= UART_LCR_WLEN8;
+ symb_bit += 8;
+ break;
+ }
+
+ /* Stop bits */
+ if (termios->c_cflag & CSTOPB) {
+ lcr |= UART_LCR_STOP;
+ symb_bit += 2;
+ } else {
+ lcr &= ~UART_LCR_STOP;
+ symb_bit++;
+ }
+
+ tegra_uart_write(tup, lcr, UART_LCR);
+ tup->lcr_shadow = lcr;
+ tup->symb_bit = symb_bit;
+
+ /* Baud rate. */
+ baud = uart_get_baud_rate(u, termios, oldtermios,
+ parent_clk_rate/max_divider,
+ parent_clk_rate/16);
+ spin_unlock_irqrestore(&u->lock, flags);
+ tegra_set_baudrate(tup, baud);
+ if (tty_termios_baud_rate(termios))
+ tty_termios_encode_baud_rate(termios, baud, baud);
+ spin_lock_irqsave(&u->lock, flags);
+
+ /* Flow control */
+ if (termios->c_cflag & CRTSCTS) {
+ tup->mcr_shadow |= TEGRA_UART_MCR_CTS_EN;
+ tup->mcr_shadow &= ~TEGRA_UART_MCR_RTS_EN;
+ tegra_uart_write(tup, tup->mcr_shadow, UART_MCR);
+ /* if top layer has asked to set rts active then do so here */
+ if (tup->rts_active)
+ set_rts(tup, true);
+ } else {
+ tup->mcr_shadow &= ~TEGRA_UART_MCR_CTS_EN;
+ tup->mcr_shadow &= ~TEGRA_UART_MCR_RTS_EN;
+ tegra_uart_write(tup, tup->mcr_shadow, UART_MCR);
+ }
+
+ /* update the port timeout based on new settings */
+ uart_update_timeout(u, termios->c_cflag, baud);
+
+ /* Make sure all write has completed */
+ tegra_uart_read(tup, UART_IER);
+
+ /* Reenable interrupt */
+ tegra_uart_write(tup, tup->ier_shadow, UART_IER);
+ tegra_uart_read(tup, UART_IER);
+
+ spin_unlock_irqrestore(&u->lock, flags);
+ return;
+}
+
+/*
+ * Flush any TX data submitted for DMA and PIO. Called when the
+ * TX circular buffer is reset.
+ */
+static void tegra_uart_flush_buffer(struct uart_port *u)
+{
+ struct tegra_uart_port *tup = to_tegra_uport(u);
+
+ tup->tx_bytes = 0;
+ if (tup->tx_dma_chan)
+ dmaengine_terminate_all(tup->tx_dma_chan);
+ return;
+}
+
+static const char *tegra_uart_type(struct uart_port *u)
+{
+ return TEGRA_UART_TYPE;
+}
+
+static struct uart_ops tegra_uart_ops = {
+ .tx_empty = tegra_uart_tx_empty,
+ .set_mctrl = tegra_uart_set_mctrl,
+ .get_mctrl = tegra_uart_get_mctrl,
+ .stop_tx = tegra_uart_stop_tx,
+ .start_tx = tegra_uart_start_tx,
+ .stop_rx = tegra_uart_stop_rx,
+ .flush_buffer = tegra_uart_flush_buffer,
+ .enable_ms = tegra_uart_enable_ms,
+ .break_ctl = tegra_uart_break_ctl,
+ .startup = tegra_uart_startup,
+ .shutdown = tegra_uart_shutdown,
+ .set_termios = tegra_uart_set_termios,
+ .type = tegra_uart_type,
+ .request_port = tegra_uart_request_port,
+ .release_port = tegra_uart_release_port,
+};
+
+static struct uart_driver tegra_uart_driver = {
+ .owner = THIS_MODULE,
+ .driver_name = "tegra_hsuart",
+ .dev_name = "ttyTHS",
+ .cons = 0,
+ .nr = TEGRA_UART_MAXIMUM,
+};
+
+static int tegra_uart_parse_dt(struct platform_device *pdev,
+ struct tegra_uart_port *tup)
+{
+ struct device_node *np = pdev->dev.of_node;
+ u32 of_dma[2];
+ int port;
+
+ if (of_property_read_u32_array(np, "nvidia,dma-request-selector",
+ of_dma, 2) >= 0) {
+ tup->dma_req_sel = of_dma[1];
+ } else {
+ dev_err(&pdev->dev, "missing dma requestor in device tree\n");
+ return -EINVAL;
+ }
+
+ port = of_alias_get_id(np, "serial");
+ if (port < 0) {
+ dev_err(&pdev->dev, "failed to get alias id, errno %d\n", port);
+ return port;
+ }
+ tup->uport.line = port;
+
+ tup->enable_modem_interrupt = of_property_read_bool(np,
+ "nvidia,enable-modem-interrupt");
+ return 0;
+}
+
+struct tegra_uart_chip_data tegra20_uart_chip_data = {
+ .tx_fifo_full_status = false,
+ .allow_txfifo_reset_fifo_mode = true,
+ .support_clk_src_div = false,
+};
+
+struct tegra_uart_chip_data tegra30_uart_chip_data = {
+ .tx_fifo_full_status = true,
+ .allow_txfifo_reset_fifo_mode = false,
+ .support_clk_src_div = true,
+};
+
+static struct of_device_id tegra_uart_of_match[] = {
+ {
+ .compatible = "nvidia,tegra30-hsuart",
+ .data = &tegra30_uart_chip_data,
+ }, {
+ .compatible = "nvidia,tegra20-hsuart",
+ .data = &tegra20_uart_chip_data,
+ }, {
+ },
+};
+MODULE_DEVICE_TABLE(of, tegra_uart_of_match);
+
+static int tegra_uart_probe(struct platform_device *pdev)
+{
+ struct tegra_uart_port *tup;
+ struct uart_port *u;
+ struct resource *resource;
+ int ret;
+ const struct tegra_uart_chip_data *cdata;
+ const struct of_device_id *match;
+
+ match = of_match_device(of_match_ptr(tegra_uart_of_match),
+ &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "Error: No device match found\n");
+ return -ENODEV;
+ }
+ cdata = match->data;
+
+ tup = devm_kzalloc(&pdev->dev, sizeof(*tup), GFP_KERNEL);
+ if (!tup) {
+ dev_err(&pdev->dev, "Failed to allocate memory for tup\n");
+ return -ENOMEM;
+ }
+
+ ret = tegra_uart_parse_dt(pdev, tup);
+ if (ret < 0)
+ return ret;
+
+ u = &tup->uport;
+ u->dev = &pdev->dev;
+ u->ops = &tegra_uart_ops;
+ u->type = PORT_TEGRA;
+ u->fifosize = 32;
+ tup->cdata = cdata;
+
+ platform_set_drvdata(pdev, tup);
+ resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!resource) {
+ dev_err(&pdev->dev, "No IO memory resource\n");
+ return -ENODEV;
+ }
+
+ u->mapbase = resource->start;
+ u->membase = devm_request_and_ioremap(&pdev->dev, resource);
+ if (!u->membase) {
+ dev_err(&pdev->dev, "memregion/iomap address req failed\n");
+ return -EADDRNOTAVAIL;
+ }
+
+ tup->uart_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(tup->uart_clk)) {
+ dev_err(&pdev->dev, "Couldn't get the clock\n");
+ return PTR_ERR(tup->uart_clk);
+ }
+
+ u->iotype = UPIO_MEM32;
+ u->irq = platform_get_irq(pdev, 0);
+ u->regshift = 2;
+ ret = uart_add_one_port(&tegra_uart_driver, u);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to add uart port, err %d\n", ret);
+ return ret;
+ }
+ return ret;
+}
+
+static int tegra_uart_remove(struct platform_device *pdev)
+{
+ struct tegra_uart_port *tup = platform_get_drvdata(pdev);
+ struct uart_port *u = &tup->uport;
+
+ uart_remove_one_port(&tegra_uart_driver, u);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int tegra_uart_suspend(struct device *dev)
+{
+ struct tegra_uart_port *tup = dev_get_drvdata(dev);
+ struct uart_port *u = &tup->uport;
+
+ return uart_suspend_port(&tegra_uart_driver, u);
+}
+
+static int tegra_uart_resume(struct device *dev)
+{
+ struct tegra_uart_port *tup = dev_get_drvdata(dev);
+ struct uart_port *u = &tup->uport;
+
+ return uart_resume_port(&tegra_uart_driver, u);
+}
+#endif
+
+static const struct dev_pm_ops tegra_uart_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(tegra_uart_suspend, tegra_uart_resume)
+};
+
+static struct platform_driver tegra_uart_platform_driver = {
+ .probe = tegra_uart_probe,
+ .remove = tegra_uart_remove,
+ .driver = {
+ .name = "serial-tegra",
+ .of_match_table = of_match_ptr(tegra_uart_of_match),
+ .pm = &tegra_uart_pm_ops,
+ },
+};
+
+static int __init tegra_uart_init(void)
+{
+ int ret;
+
+ ret = uart_register_driver(&tegra_uart_driver);
+ if (ret < 0) {
+ pr_err("Could not register %s driver\n",
+ tegra_uart_driver.driver_name);
+ return ret;
+ }
+
+ ret = platform_driver_register(&tegra_uart_platform_driver);
+ if (ret < 0) {
+ pr_err("Uart platfrom driver register failed, e = %d\n", ret);
+ uart_unregister_driver(&tegra_uart_driver);
+ return ret;
+ }
+ return 0;
+}
+
+static void __exit tegra_uart_exit(void)
+{
+ pr_info("Unloading tegra uart driver\n");
+ platform_driver_unregister(&tegra_uart_platform_driver);
+ uart_unregister_driver(&tegra_uart_driver);
+}
+
+module_init(tegra_uart_init);
+module_exit(tegra_uart_exit);
+
+MODULE_ALIAS("platform:serial-tegra");
+MODULE_DESCRIPTION("High speed UART driver for tegra chipset");
+MODULE_AUTHOR("Laxman Dewangan <[email protected]>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 2c7230a..ca98a3f 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -59,7 +59,8 @@
static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
struct ktermios *old_termios);
static void uart_wait_until_sent(struct tty_struct *tty, int timeout);
-static void uart_change_pm(struct uart_state *state, int pm_state);
+static void uart_change_pm(struct uart_state *state,
+ enum uart_pm_state pm_state);
static void uart_port_shutdown(struct tty_port *port);
@@ -866,9 +867,7 @@
port->closing_wait = closing_wait;
if (new_info->xmit_fifo_size)
uport->fifosize = new_info->xmit_fifo_size;
- if (port->tty)
- port->tty->low_latency =
- (uport->flags & UPF_LOW_LATENCY) ? 1 : 0;
+ port->low_latency = (uport->flags & UPF_LOW_LATENCY) ? 1 : 0;
check_and_exit:
retval = 0;
@@ -1308,9 +1307,10 @@
}
/*
- * In 2.4.5, calls to this will be serialized via the BKL in
- * linux/drivers/char/tty_io.c:tty_release()
- * linux/drivers/char/tty_io.c:do_tty_handup()
+ * Calls to uart_close() are serialised via the tty_lock in
+ * drivers/tty/tty_io.c:tty_release()
+ * drivers/tty/tty_io.c:do_tty_hangup()
+ * This runs from a workqueue and can sleep for a _short_ time only.
*/
static void uart_close(struct tty_struct *tty, struct file *filp)
{
@@ -1365,7 +1365,7 @@
spin_lock_irqsave(&port->lock, flags);
} else if (!uart_console(uport)) {
spin_unlock_irqrestore(&port->lock, flags);
- uart_change_pm(state, 3);
+ uart_change_pm(state, UART_PM_STATE_OFF);
spin_lock_irqsave(&port->lock, flags);
}
@@ -1437,10 +1437,9 @@
}
/*
- * This is called with the BKL held in
- * linux/drivers/char/tty_io.c:do_tty_hangup()
- * We're called from the eventd thread, so we can sleep for
- * a _short_ time only.
+ * Calls to uart_hangup() are serialised by the tty_lock in
+ * drivers/tty/tty_io.c:do_tty_hangup()
+ * This runs from a workqueue and can sleep for a _short_ time only.
*/
static void uart_hangup(struct tty_struct *tty)
{
@@ -1521,8 +1520,8 @@
}
/*
- * calls to uart_open are serialised by the BKL in
- * fs/char_dev.c:chrdev_open()
+ * Calls to uart_open are serialised by the tty_lock in
+ * drivers/tty/tty_io.c:tty_open()
* Note that if this fails, then uart_close() _will_ be called.
*
* In time, we want to scrap the "opening nonpresent ports"
@@ -1564,7 +1563,8 @@
*/
tty->driver_data = state;
state->uart_port->state = state;
- tty->low_latency = (state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0;
+ state->port.low_latency =
+ (state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0;
tty_port_tty_set(port, tty);
/*
@@ -1579,7 +1579,7 @@
* Make sure the device is in D0 state.
*/
if (port->count == 1)
- uart_change_pm(state, 0);
+ uart_change_pm(state, UART_PM_STATE_ON);
/*
* Start up the serial port.
@@ -1620,7 +1620,7 @@
{
struct uart_state *state = drv->state + i;
struct tty_port *port = &state->port;
- int pm_state;
+ enum uart_pm_state pm_state;
struct uart_port *uport = state->uart_port;
char stat_buf[32];
unsigned int status;
@@ -1645,12 +1645,12 @@
if (capable(CAP_SYS_ADMIN)) {
mutex_lock(&port->mutex);
pm_state = state->pm_state;
- if (pm_state)
- uart_change_pm(state, 0);
+ if (pm_state != UART_PM_STATE_ON)
+ uart_change_pm(state, UART_PM_STATE_ON);
spin_lock_irq(&uport->lock);
status = uport->ops->get_mctrl(uport);
spin_unlock_irq(&uport->lock);
- if (pm_state)
+ if (pm_state != UART_PM_STATE_ON)
uart_change_pm(state, pm_state);
mutex_unlock(&port->mutex);
@@ -1897,7 +1897,8 @@
*
* Locking: port->mutex has to be held
*/
-static void uart_change_pm(struct uart_state *state, int pm_state)
+static void uart_change_pm(struct uart_state *state,
+ enum uart_pm_state pm_state)
{
struct uart_port *port = state->uart_port;
@@ -1982,7 +1983,7 @@
console_stop(uport->cons);
if (console_suspend_enabled || !uart_console(uport))
- uart_change_pm(state, 3);
+ uart_change_pm(state, UART_PM_STATE_OFF);
mutex_unlock(&port->mutex);
@@ -2027,7 +2028,7 @@
termios = port->tty->termios;
if (console_suspend_enabled)
- uart_change_pm(state, 0);
+ uart_change_pm(state, UART_PM_STATE_ON);
uport->ops->set_termios(uport, &termios, NULL);
if (console_suspend_enabled)
console_start(uport->cons);
@@ -2037,7 +2038,7 @@
const struct uart_ops *ops = uport->ops;
int ret;
- uart_change_pm(state, 0);
+ uart_change_pm(state, UART_PM_STATE_ON);
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, 0);
spin_unlock_irq(&uport->lock);
@@ -2137,7 +2138,7 @@
uart_report_port(drv, port);
/* Power up port for set_mctrl() */
- uart_change_pm(state, 0);
+ uart_change_pm(state, UART_PM_STATE_ON);
/*
* Ensure that the modem control lines are de-activated.
@@ -2161,7 +2162,7 @@
* console if we have one.
*/
if (!uart_console(port))
- uart_change_pm(state, 3);
+ uart_change_pm(state, UART_PM_STATE_OFF);
}
}
@@ -2588,7 +2589,7 @@
}
state->uart_port = uport;
- state->pm_state = -1;
+ state->pm_state = UART_PM_STATE_UNDEFINED;
uport->cons = drv->cons;
uport->state = state;
@@ -2642,6 +2643,7 @@
{
struct uart_state *state = drv->state + uport->line;
struct tty_port *port = &state->port;
+ int ret = 0;
BUG_ON(in_interrupt());
@@ -2656,6 +2658,11 @@
* succeeding while we shut down the port.
*/
mutex_lock(&port->mutex);
+ if (!state->uart_port) {
+ mutex_unlock(&port->mutex);
+ ret = -EINVAL;
+ goto out;
+ }
uport->flags |= UPF_DEAD;
mutex_unlock(&port->mutex);
@@ -2679,9 +2686,10 @@
uport->type = PORT_UNKNOWN;
state->uart_port = NULL;
+out:
mutex_unlock(&port_mutex);
- return 0;
+ return ret;
}
/*
@@ -2790,10 +2798,10 @@
void uart_insert_char(struct uart_port *port, unsigned int status,
unsigned int overrun, unsigned int ch, unsigned int flag)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
if ((status & port->ignore_status_mask & ~overrun) == 0)
- if (tty_insert_flip_char(tty, ch, flag) == 0)
+ if (tty_insert_flip_char(tport, ch, flag) == 0)
++port->icount.buf_overrun;
/*
@@ -2801,7 +2809,7 @@
* it doesn't affect the current character.
*/
if (status & ~port->ignore_status_mask & overrun)
- if (tty_insert_flip_char(tty, 0, TTY_OVERRUN) == 0)
+ if (tty_insert_flip_char(tport, 0, TTY_OVERRUN) == 0)
++port->icount.buf_overrun;
}
EXPORT_SYMBOL_GPL(uart_insert_char);
diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c
index 9bd004f..e1caa99 100644
--- a/drivers/tty/serial/serial_ks8695.c
+++ b/drivers/tty/serial/serial_ks8695.c
@@ -153,7 +153,6 @@
static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty = port->state->port.tty;
unsigned int status, ch, lsr, flg, max_count = 256;
status = UART_GET_LSR(port); /* clears pending LSR interrupts */
@@ -200,7 +199,7 @@
ignore_char:
status = UART_GET_LSR(port);
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index b52b21a..fe48a0c 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -277,7 +277,6 @@
static inline void
receive_chars(struct uart_txx9_port *up, unsigned int *status)
{
- struct tty_struct *tty = up->port.state->port.tty;
unsigned char ch;
unsigned int disr = *status;
int max_count = 256;
@@ -346,7 +345,7 @@
disr = sio_in(up, TXX9_SIDISR);
} while (!(disr & TXX9_SIDISR_UVALID) && (max_count-- > 0));
spin_unlock(&up->port.lock);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&up->port.state->port);
spin_lock(&up->port.lock);
*status = disr;
}
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 6147756..1564186 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -596,7 +596,7 @@
static void sci_receive_chars(struct uart_port *port)
{
struct sci_port *sci_port = to_sci_port(port);
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
int i, count, copied = 0;
unsigned short status;
unsigned char flag;
@@ -607,7 +607,7 @@
while (1) {
/* Don't copy more bytes than there is room for in the buffer */
- count = tty_buffer_request_room(tty, sci_rxfill(port));
+ count = tty_buffer_request_room(tport, sci_rxfill(port));
/* If for any reason we can't copy more data, we're done! */
if (count == 0)
@@ -619,7 +619,7 @@
sci_port->break_flag)
count = 0;
else
- tty_insert_flip_char(tty, c, TTY_NORMAL);
+ tty_insert_flip_char(tport, c, TTY_NORMAL);
} else {
for (i = 0; i < count; i++) {
char c = serial_port_in(port, SCxRDR);
@@ -661,7 +661,7 @@
} else
flag = TTY_NORMAL;
- tty_insert_flip_char(tty, c, flag);
+ tty_insert_flip_char(tport, c, flag);
}
}
@@ -674,7 +674,7 @@
if (copied) {
/* Tell the rest of the system the news. New characters! */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
} else {
serial_port_in(port, SCxSR); /* dummy read */
serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
@@ -720,7 +720,7 @@
{
int copied = 0;
unsigned short status = serial_port_in(port, SCxSR);
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct sci_port *s = to_sci_port(port);
/*
@@ -731,7 +731,7 @@
port->icount.overrun++;
/* overrun error */
- if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
+ if (tty_insert_flip_char(tport, 0, TTY_OVERRUN))
copied++;
dev_notice(port->dev, "overrun error");
@@ -755,7 +755,7 @@
dev_dbg(port->dev, "BREAK detected\n");
- if (tty_insert_flip_char(tty, 0, TTY_BREAK))
+ if (tty_insert_flip_char(tport, 0, TTY_BREAK))
copied++;
}
@@ -763,7 +763,7 @@
/* frame error */
port->icount.frame++;
- if (tty_insert_flip_char(tty, 0, TTY_FRAME))
+ if (tty_insert_flip_char(tport, 0, TTY_FRAME))
copied++;
dev_notice(port->dev, "frame error\n");
@@ -774,21 +774,21 @@
/* parity error */
port->icount.parity++;
- if (tty_insert_flip_char(tty, 0, TTY_PARITY))
+ if (tty_insert_flip_char(tport, 0, TTY_PARITY))
copied++;
dev_notice(port->dev, "parity error");
}
if (copied)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
return copied;
}
static int sci_handle_fifo_overrun(struct uart_port *port)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct sci_port *s = to_sci_port(port);
struct plat_sci_reg *reg;
int copied = 0;
@@ -802,8 +802,8 @@
port->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
+ tty_flip_buffer_push(tport);
dev_notice(port->dev, "overrun error\n");
copied++;
@@ -816,7 +816,7 @@
{
int copied = 0;
unsigned short status = serial_port_in(port, SCxSR);
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct sci_port *s = to_sci_port(port);
if (uart_handle_break(port))
@@ -831,14 +831,14 @@
port->icount.brk++;
/* Notify of BREAK */
- if (tty_insert_flip_char(tty, 0, TTY_BREAK))
+ if (tty_insert_flip_char(tport, 0, TTY_BREAK))
copied++;
dev_dbg(port->dev, "BREAK detected\n");
}
if (copied)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
copied += sci_handle_fifo_overrun(port);
@@ -1259,13 +1259,13 @@
}
/* Locking: called with port lock held */
-static int sci_dma_rx_push(struct sci_port *s, struct tty_struct *tty,
- size_t count)
+static int sci_dma_rx_push(struct sci_port *s, size_t count)
{
struct uart_port *port = &s->port;
+ struct tty_port *tport = &port->state->port;
int i, active, room;
- room = tty_buffer_request_room(tty, count);
+ room = tty_buffer_request_room(tport, count);
if (s->active_rx == s->cookie_rx[0]) {
active = 0;
@@ -1283,7 +1283,7 @@
return room;
for (i = 0; i < room; i++)
- tty_insert_flip_char(tty, ((u8 *)sg_virt(&s->sg_rx[active]))[i],
+ tty_insert_flip_char(tport, ((u8 *)sg_virt(&s->sg_rx[active]))[i],
TTY_NORMAL);
port->icount.rx += room;
@@ -1295,7 +1295,6 @@
{
struct sci_port *s = arg;
struct uart_port *port = &s->port;
- struct tty_struct *tty = port->state->port.tty;
unsigned long flags;
int count;
@@ -1303,14 +1302,14 @@
spin_lock_irqsave(&port->lock, flags);
- count = sci_dma_rx_push(s, tty, s->buf_len_rx);
+ count = sci_dma_rx_push(s, s->buf_len_rx);
mod_timer(&s->rx_timer, jiffies + s->rx_timeout);
spin_unlock_irqrestore(&port->lock, flags);
if (count)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
schedule_work(&s->work_rx);
}
@@ -1404,7 +1403,6 @@
if (dma_async_is_tx_complete(s->chan_rx, s->active_rx, NULL, NULL) !=
DMA_SUCCESS) {
/* Handle incomplete DMA receive */
- struct tty_struct *tty = port->state->port.tty;
struct dma_chan *chan = s->chan_rx;
struct shdma_desc *sh_desc = container_of(desc,
struct shdma_desc, async_tx);
@@ -1416,11 +1414,11 @@
sh_desc->partial, sh_desc->cookie);
spin_lock_irqsave(&port->lock, flags);
- count = sci_dma_rx_push(s, tty, sh_desc->partial);
+ count = sci_dma_rx_push(s, sh_desc->partial);
spin_unlock_irqrestore(&port->lock, flags);
if (count)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
sci_submit_rx(s);
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 5da5cb9..6bbfe99 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -75,6 +75,20 @@
.line = 2,
},
},
+ [3] = {
+ .port = {
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF,
+ .line = 3,
+ },
+ },
+ [4] = {
+ .port = {
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF,
+ .line = 4,
+ },
+ },
};
static inline struct sirfsoc_uart_port *to_sirfport(struct uart_port *port)
@@ -192,11 +206,6 @@
sirfsoc_uart_pio_rx_chars(struct uart_port *port, unsigned int max_rx_count)
{
unsigned int ch, rx_count = 0;
- struct tty_struct *tty;
-
- tty = tty_port_tty_get(&port->state->port);
- if (!tty)
- return -ENODEV;
while (!(rd_regl(port, SIRFUART_RX_FIFO_STATUS) &
SIRFUART_FIFOEMPTY_MASK(port))) {
@@ -210,8 +219,7 @@
}
port->icount.rx += rx_count;
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->state->port);
return rx_count;
}
@@ -245,6 +253,7 @@
struct uart_port *port = &sirfport->port;
struct uart_state *state = port->state;
struct circ_buf *xmit = &port->state->xmit;
+ spin_lock(&port->lock);
intr_status = rd_regl(port, SIRFUART_INT_STATUS);
wr_regl(port, SIRFUART_INT_STATUS, intr_status);
intr_status &= rd_regl(port, SIRFUART_INT_EN);
@@ -254,6 +263,7 @@
goto recv_char;
uart_insert_char(port, intr_status,
SIRFUART_RX_OFLOW, 0, TTY_BREAK);
+ spin_unlock(&port->lock);
return IRQ_HANDLED;
}
if (intr_status & SIRFUART_RX_OFLOW)
@@ -286,6 +296,7 @@
sirfsoc_uart_pio_rx_chars(port, SIRFSOC_UART_IO_RX_MAX_CNT);
if (intr_status & SIRFUART_TX_INT_EN) {
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ spin_unlock(&port->lock);
return IRQ_HANDLED;
} else {
sirfsoc_uart_pio_tx_chars(sirfport,
@@ -296,6 +307,7 @@
sirfsoc_uart_stop_tx(port);
}
}
+ spin_unlock(&port->lock);
return IRQ_HANDLED;
}
@@ -345,7 +357,6 @@
struct ktermios *old)
{
struct sirfsoc_uart_port *sirfport = to_sirfport(port);
- unsigned long ioclk_rate;
unsigned long config_reg = 0;
unsigned long baud_rate;
unsigned long setted_baud;
@@ -357,7 +368,6 @@
int threshold_div;
int temp;
- ioclk_rate = 150000000;
switch (termios->c_cflag & CSIZE) {
default:
case CS8:
@@ -413,14 +423,17 @@
sirfsoc_uart_disable_ms(port);
}
- /* common rate: fast calculation */
- for (ic = 0; ic < SIRF_BAUD_RATE_SUPPORT_NR; ic++)
- if (baud_rate == baudrate_to_regv[ic].baud_rate)
- clk_div_reg = baudrate_to_regv[ic].reg_val;
+ if (port->uartclk == 150000000) {
+ /* common rate: fast calculation */
+ for (ic = 0; ic < SIRF_BAUD_RATE_SUPPORT_NR; ic++)
+ if (baud_rate == baudrate_to_regv[ic].baud_rate)
+ clk_div_reg = baudrate_to_regv[ic].reg_val;
+ }
+
setted_baud = baud_rate;
/* arbitary rate setting */
if (unlikely(clk_div_reg == 0))
- clk_div_reg = sirfsoc_calc_sample_div(baud_rate, ioclk_rate,
+ clk_div_reg = sirfsoc_calc_sample_div(baud_rate, port->uartclk,
&setted_baud);
wr_regl(port, SIRFUART_DIVISOR, clk_div_reg);
@@ -679,6 +692,14 @@
goto err;
}
+ sirfport->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(sirfport->clk)) {
+ ret = PTR_ERR(sirfport->clk);
+ goto clk_err;
+ }
+ clk_prepare_enable(sirfport->clk);
+ port->uartclk = clk_get_rate(sirfport->clk);
+
port->ops = &sirfsoc_uart_ops;
spin_lock_init(&port->lock);
@@ -692,6 +713,9 @@
return 0;
port_err:
+ clk_disable_unprepare(sirfport->clk);
+ clk_put(sirfport->clk);
+clk_err:
platform_set_drvdata(pdev, NULL);
if (sirfport->hw_flow_ctrl)
pinctrl_put(sirfport->p);
@@ -706,6 +730,8 @@
platform_set_drvdata(pdev, NULL);
if (sirfport->hw_flow_ctrl)
pinctrl_put(sirfport->p);
+ clk_disable_unprepare(sirfport->clk);
+ clk_put(sirfport->clk);
uart_remove_one_port(&sirfsoc_uart_drv, port);
return 0;
}
@@ -729,6 +755,7 @@
static struct of_device_id sirfsoc_uart_ids[] = {
{ .compatible = "sirf,prima2-uart", },
+ { .compatible = "sirf,marco-uart", },
{}
};
MODULE_DEVICE_TABLE(of, sirfsoc_serial_of_match);
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
index 6e207fd..85328ba 100644
--- a/drivers/tty/serial/sirfsoc_uart.h
+++ b/drivers/tty/serial/sirfsoc_uart.h
@@ -139,7 +139,7 @@
#define SIRFSOC_UART_MINOR 0
#define SIRFUART_PORT_NAME "sirfsoc-uart"
#define SIRFUART_MAP_SIZE 0x200
-#define SIRFSOC_UART_NR 3
+#define SIRFSOC_UART_NR 5
#define SIRFSOC_PORT_TYPE 0xa5
/* Baud Rate Calculation */
@@ -163,6 +163,7 @@
struct uart_port port;
struct pinctrl *p;
+ struct clk *clk;
};
/* Hardware Flow Control */
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
index 1c6de9f..f51ffdc 100644
--- a/drivers/tty/serial/sn_console.c
+++ b/drivers/tty/serial/sn_console.c
@@ -457,8 +457,8 @@
static void
sn_receive_chars(struct sn_cons_port *port, unsigned long flags)
{
+ struct tty_port *tport = NULL;
int ch;
- struct tty_struct *tty;
if (!port) {
printk(KERN_ERR "sn_receive_chars - port NULL so can't receive\n");
@@ -472,11 +472,7 @@
if (port->sc_port.state) {
/* The serial_core stuffs are initialized, use them */
- tty = port->sc_port.state->port.tty;
- }
- else {
- /* Not registered yet - can't pass to tty layer. */
- tty = NULL;
+ tport = &port->sc_port.state->port;
}
while (port->sc_ops->sal_input_pending()) {
@@ -516,15 +512,15 @@
#endif /* CONFIG_MAGIC_SYSRQ */
/* record the character to pass up to the tty layer */
- if (tty) {
- if(tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+ if (tport) {
+ if (tty_insert_flip_char(tport, ch, TTY_NORMAL) == 0)
break;
}
port->sc_port.icount.rx++;
}
- if (tty)
- tty_flip_buffer_push(tty);
+ if (tport)
+ tty_flip_buffer_push(tport);
}
/**
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index b9bf9c5..ba60708 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -72,7 +72,7 @@
}
}
-static int receive_chars_getchar(struct uart_port *port, struct tty_struct *tty)
+static int receive_chars_getchar(struct uart_port *port)
{
int saw_console_brk = 0;
int limit = 10000;
@@ -99,7 +99,7 @@
uart_handle_dcd_change(port, 1);
}
- if (tty == NULL) {
+ if (port->state == NULL) {
uart_handle_sysrq_char(port, c);
continue;
}
@@ -109,13 +109,13 @@
if (uart_handle_sysrq_char(port, c))
continue;
- tty_insert_flip_char(tty, c, TTY_NORMAL);
+ tty_insert_flip_char(&port->state->port, c, TTY_NORMAL);
}
return saw_console_brk;
}
-static int receive_chars_read(struct uart_port *port, struct tty_struct *tty)
+static int receive_chars_read(struct uart_port *port)
{
int saw_console_brk = 0;
int limit = 10000;
@@ -152,12 +152,13 @@
for (i = 0; i < bytes_read; i++)
uart_handle_sysrq_char(port, con_read_page[i]);
- if (tty == NULL)
+ if (port->state == NULL)
continue;
port->icount.rx += bytes_read;
- tty_insert_flip_string(tty, con_read_page, bytes_read);
+ tty_insert_flip_string(&port->state->port, con_read_page,
+ bytes_read);
}
return saw_console_brk;
@@ -165,7 +166,7 @@
struct sunhv_ops {
void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit);
- int (*receive_chars)(struct uart_port *port, struct tty_struct *tty);
+ int (*receive_chars)(struct uart_port *port);
};
static struct sunhv_ops bychar_ops = {
@@ -180,17 +181,17 @@
static struct sunhv_ops *sunhv_ops = &bychar_ops;
-static struct tty_struct *receive_chars(struct uart_port *port)
+static struct tty_port *receive_chars(struct uart_port *port)
{
- struct tty_struct *tty = NULL;
+ struct tty_port *tport = NULL;
if (port->state != NULL) /* Unopened serial console */
- tty = port->state->port.tty;
+ tport = &port->state->port;
- if (sunhv_ops->receive_chars(port, tty))
+ if (sunhv_ops->receive_chars(port))
sun_do_break();
- return tty;
+ return tport;
}
static void transmit_chars(struct uart_port *port)
@@ -213,16 +214,16 @@
static irqreturn_t sunhv_interrupt(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty;
+ struct tty_port *tport;
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
- tty = receive_chars(port);
+ tport = receive_chars(port);
transmit_chars(port);
spin_unlock_irqrestore(&port->lock, flags);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (tport)
+ tty_flip_buffer_push(tport);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index bd8b3b6..8de2213 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -107,11 +107,11 @@
udelay(1);
}
-static struct tty_struct *
+static struct tty_port *
receive_chars(struct uart_sunsab_port *up,
union sab82532_irq_status *stat)
{
- struct tty_struct *tty = NULL;
+ struct tty_port *port = NULL;
unsigned char buf[32];
int saw_console_brk = 0;
int free_fifo = 0;
@@ -119,7 +119,7 @@
int i;
if (up->port.state != NULL) /* Unopened serial console */
- tty = up->port.state->port.tty;
+ port = &up->port.state->port;
/* Read number of BYTES (Character + Status) available. */
if (stat->sreg.isr0 & SAB82532_ISR0_RPF) {
@@ -136,7 +136,7 @@
if (stat->sreg.isr0 & SAB82532_ISR0_TIME) {
sunsab_cec_wait(up);
writeb(SAB82532_CMDR_RFRD, &up->regs->w.cmdr);
- return tty;
+ return port;
}
if (stat->sreg.isr0 & SAB82532_ISR0_RFO)
@@ -160,11 +160,6 @@
for (i = 0; i < count; i++) {
unsigned char ch = buf[i], flag;
- if (tty == NULL) {
- uart_handle_sysrq_char(&up->port, ch);
- continue;
- }
-
flag = TTY_NORMAL;
up->port.icount.rx++;
@@ -213,15 +208,15 @@
if ((stat->sreg.isr0 & (up->port.ignore_status_mask & 0xff)) == 0 &&
(stat->sreg.isr1 & ((up->port.ignore_status_mask >> 8) & 0xff)) == 0)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(port, ch, flag);
if (stat->sreg.isr0 & SAB82532_ISR0_RFO)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
}
if (saw_console_brk)
sun_do_break();
- return tty;
+ return port;
}
static void sunsab_stop_tx(struct uart_port *);
@@ -304,7 +299,7 @@
static irqreturn_t sunsab_interrupt(int irq, void *dev_id)
{
struct uart_sunsab_port *up = dev_id;
- struct tty_struct *tty;
+ struct tty_port *port = NULL;
union sab82532_irq_status status;
unsigned long flags;
unsigned char gis;
@@ -318,12 +313,11 @@
if (gis & 2)
status.sreg.isr1 = readb(&up->regs->r.isr1);
- tty = NULL;
if (status.stat) {
if ((status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
SAB82532_ISR0_RFO | SAB82532_ISR0_RPF)) ||
(status.sreg.isr1 & SAB82532_ISR1_BRK))
- tty = receive_chars(up, &status);
+ port = receive_chars(up, &status);
if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
(status.sreg.isr1 & SAB82532_ISR1_CSC))
check_status(up, &status);
@@ -333,8 +327,8 @@
spin_unlock_irqrestore(&up->port.lock, flags);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (port)
+ tty_flip_buffer_push(port);
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 220da3f..e343d66 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -315,10 +315,10 @@
spin_unlock_irqrestore(&up->port.lock, flags);
}
-static struct tty_struct *
+static void
receive_chars(struct uart_sunsu_port *up, unsigned char *status)
{
- struct tty_struct *tty = up->port.state->port.tty;
+ struct tty_port *port = &up->port.state->port;
unsigned char ch, flag;
int max_count = 256;
int saw_console_brk = 0;
@@ -376,22 +376,20 @@
if (uart_handle_sysrq_char(&up->port, ch))
goto ignore_char;
if ((*status & up->port.ignore_status_mask) == 0)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(port, ch, flag);
if (*status & UART_LSR_OE)
/*
* Overrun is special, since it's reported
* immediately, and doesn't affect the current
* character.
*/
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
ignore_char:
*status = serial_inp(up, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
if (saw_console_brk)
sun_do_break();
-
- return tty;
}
static void transmit_chars(struct uart_sunsu_port *up)
@@ -460,20 +458,16 @@
spin_lock_irqsave(&up->port.lock, flags);
do {
- struct tty_struct *tty;
-
status = serial_inp(up, UART_LSR);
- tty = NULL;
if (status & UART_LSR_DR)
- tty = receive_chars(up, &status);
+ receive_chars(up, &status);
check_modem_status(up);
if (status & UART_LSR_THRE)
transmit_chars(up);
spin_unlock_irqrestore(&up->port.lock, flags);
- if (tty)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&up->port.state->port);
spin_lock_irqsave(&up->port.lock, flags);
diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index aef4fab..27669ff 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -323,17 +323,15 @@
}
}
-static struct tty_struct *
+static struct tty_port *
sunzilog_receive_chars(struct uart_sunzilog_port *up,
struct zilog_channel __iomem *channel)
{
- struct tty_struct *tty;
+ struct tty_port *port = NULL;
unsigned char ch, r1, flag;
- tty = NULL;
- if (up->port.state != NULL && /* Unopened serial console */
- up->port.state->port.tty != NULL) /* Keyboard || mouse */
- tty = up->port.state->port.tty;
+ if (up->port.state != NULL) /* Unopened serial console */
+ port = &up->port.state->port;
for (;;) {
@@ -366,11 +364,6 @@
continue;
}
- if (tty == NULL) {
- uart_handle_sysrq_char(&up->port, ch);
- continue;
- }
-
/* A real serial line, record the character and status. */
flag = TTY_NORMAL;
up->port.icount.rx++;
@@ -400,13 +393,13 @@
if (up->port.ignore_status_mask == 0xff ||
(r1 & up->port.ignore_status_mask) == 0) {
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(port, ch, flag);
}
if (r1 & Rx_OVR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(port, 0, TTY_OVERRUN);
}
- return tty;
+ return port;
}
static void sunzilog_status_handle(struct uart_sunzilog_port *up,
@@ -539,21 +532,21 @@
while (up) {
struct zilog_channel __iomem *channel
= ZILOG_CHANNEL_FROM_PORT(&up->port);
- struct tty_struct *tty;
+ struct tty_port *port;
unsigned char r3;
spin_lock(&up->port.lock);
r3 = read_zsreg(channel, R3);
/* Channel A */
- tty = NULL;
+ port = NULL;
if (r3 & (CHAEXT | CHATxIP | CHARxIP)) {
writeb(RES_H_IUS, &channel->control);
ZSDELAY();
ZS_WSYNC(channel);
if (r3 & CHARxIP)
- tty = sunzilog_receive_chars(up, channel);
+ port = sunzilog_receive_chars(up, channel);
if (r3 & CHAEXT)
sunzilog_status_handle(up, channel);
if (r3 & CHATxIP)
@@ -561,22 +554,22 @@
}
spin_unlock(&up->port.lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (port)
+ tty_flip_buffer_push(port);
/* Channel B */
up = up->next;
channel = ZILOG_CHANNEL_FROM_PORT(&up->port);
spin_lock(&up->port.lock);
- tty = NULL;
+ port = NULL;
if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) {
writeb(RES_H_IUS, &channel->control);
ZSDELAY();
ZS_WSYNC(channel);
if (r3 & CHBRxIP)
- tty = sunzilog_receive_chars(up, channel);
+ port = sunzilog_receive_chars(up, channel);
if (r3 & CHBEXT)
sunzilog_status_handle(up, channel);
if (r3 & CHBTxIP)
@@ -584,8 +577,8 @@
}
spin_unlock(&up->port.lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (port)
+ tty_flip_buffer_push(port);
up = up->next;
}
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index 5be0d68..6818410 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -91,16 +91,16 @@
static void timbuart_rx_chars(struct uart_port *port)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
while (ioread32(port->membase + TIMBUART_ISR) & RXDP) {
u8 ch = ioread8(port->membase + TIMBUART_RXFIFO);
port->icount.rx++;
- tty_insert_flip_char(tty, ch, TTY_NORMAL);
+ tty_insert_flip_char(tport, ch, TTY_NORMAL);
}
spin_unlock(&port->lock);
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(tport);
spin_lock(&port->lock);
dev_dbg(port->dev, "%s - total read %d bytes\n",
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 89eee43..5486505 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -66,7 +66,7 @@
static int ulite_receive(struct uart_port *port, int stat)
{
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
unsigned char ch = 0;
char flag = TTY_NORMAL;
@@ -103,13 +103,13 @@
stat &= ~port->ignore_status_mask;
if (stat & ULITE_STATUS_RXVALID)
- tty_insert_flip_char(tty, ch, flag);
+ tty_insert_flip_char(tport, ch, flag);
if (stat & ULITE_STATUS_FRAME)
- tty_insert_flip_char(tty, 0, TTY_FRAME);
+ tty_insert_flip_char(tport, 0, TTY_FRAME);
if (stat & ULITE_STATUS_OVERRUN)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
return 1;
}
@@ -156,7 +156,7 @@
/* work done? */
if (n > 1) {
- tty_flip_buffer_push(port->state->port.tty);
+ tty_flip_buffer_push(&port->state->port);
return IRQ_HANDLED;
} else {
return IRQ_NONE;
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index f99b0c9..7355303 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -469,7 +469,7 @@
int i;
unsigned char ch, *cp;
struct uart_port *port = &qe_port->port;
- struct tty_struct *tty = port->state->port.tty;
+ struct tty_port *tport = &port->state->port;
struct qe_bd *bdp;
u16 status;
unsigned int flg;
@@ -491,7 +491,7 @@
/* If we don't have enough room in RX buffer for the entire BD,
* then we try later, which will be the next RX interrupt.
*/
- if (tty_buffer_request_room(tty, i) < i) {
+ if (tty_buffer_request_room(tport, i) < i) {
dev_dbg(port->dev, "ucc-uart: no room in RX buffer\n");
return;
}
@@ -512,7 +512,7 @@
continue;
error_return:
- tty_insert_flip_char(tty, ch, flg);
+ tty_insert_flip_char(tport, ch, flg);
}
@@ -530,7 +530,7 @@
qe_port->rx_cur = bdp;
/* Activate BH processing */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(tport);
return;
@@ -560,7 +560,7 @@
/* Overrun does not affect the current character ! */
if (status & BD_SC_OV)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
#ifdef SUPPORT_SYSRQ
port->sysrq = 0;
#endif
diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c
index 62ee016..f655997f 100644
--- a/drivers/tty/serial/vr41xx_siu.c
+++ b/drivers/tty/serial/vr41xx_siu.c
@@ -313,12 +313,10 @@
static inline void receive_chars(struct uart_port *port, uint8_t *status)
{
- struct tty_struct *tty;
uint8_t lsr, ch;
char flag;
int max_count = RX_MAX_COUNT;
- tty = port->state->port.tty;
lsr = *status;
do {
@@ -365,7 +363,7 @@
lsr = siu_read(port, UART_LSR);
} while ((lsr & UART_LSR_DR) && (max_count-- > 0));
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
*status = lsr;
}
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index d5ed9f6..a3f9dd5 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -136,22 +136,14 @@
static void handle_rx(struct uart_port *port)
{
- struct tty_struct *tty = tty_port_tty_get(&port->state->port);
- if (!tty) {
- /* Discard data: no tty available */
- int count = (vt8500_read(port, VT8500_URFIDX) & 0x1f00) >> 8;
- u16 ch;
- while (count--)
- ch = readw(port->membase + VT8500_RXFIFO);
- return;
- }
+ struct tty_port *tport = &port->state->port;
/*
* Handle overrun
*/
if ((vt8500_read(port, VT8500_URISR) & RXOVER)) {
port->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(tport, 0, TTY_OVERRUN);
}
/* and now the main RX loop */
@@ -174,11 +166,10 @@
port->icount.rx++;
if (!uart_handle_sysrq_char(port, c))
- tty_insert_flip_char(tty, c, flag);
+ tty_insert_flip_char(tport, c, flag);
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(tport);
}
static void handle_tx(struct uart_port *port)
@@ -569,7 +560,7 @@
if (np)
port = of_alias_get_id(np, "serial");
- if (port > VT8500_MAX_PORTS)
+ if (port >= VT8500_MAX_PORTS)
port = -1;
else
port = -1;
@@ -580,7 +571,7 @@
sizeof(vt8500_ports_in_use));
}
- if (port > VT8500_MAX_PORTS)
+ if (port >= VT8500_MAX_PORTS)
return -ENODEV;
/* reserve the port id */
@@ -589,10 +580,27 @@
return -EBUSY;
}
- vt8500_port = kzalloc(sizeof(struct vt8500_port), GFP_KERNEL);
+ vt8500_port = devm_kzalloc(&pdev->dev, sizeof(struct vt8500_port),
+ GFP_KERNEL);
if (!vt8500_port)
return -ENOMEM;
+ vt8500_port->uart.membase = devm_request_and_ioremap(&pdev->dev, mmres);
+ if (!vt8500_port->uart.membase)
+ return -EADDRNOTAVAIL;
+
+ vt8500_port->clk = of_clk_get(pdev->dev.of_node, 0);
+ if (IS_ERR(vt8500_port->clk)) {
+ dev_err(&pdev->dev, "failed to get clock\n");
+ return -EINVAL;
+ }
+
+ ret = clk_prepare_enable(vt8500_port->clk);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable clock\n");
+ return ret;
+ }
+
vt8500_port->uart.type = PORT_VT8500;
vt8500_port->uart.iotype = UPIO_MEM;
vt8500_port->uart.mapbase = mmres->start;
@@ -615,12 +623,6 @@
snprintf(vt8500_port->name, sizeof(vt8500_port->name),
"VT8500 UART%d", pdev->id);
- vt8500_port->uart.membase = ioremap(mmres->start, resource_size(mmres));
- if (!vt8500_port->uart.membase) {
- ret = -ENOMEM;
- goto err;
- }
-
vt8500_uart_ports[port] = vt8500_port;
uart_add_one_port(&vt8500_uart_driver, &vt8500_port->uart);
@@ -628,10 +630,6 @@
platform_set_drvdata(pdev, vt8500_port);
return 0;
-
-err:
- kfree(vt8500_port);
- return ret;
}
static int vt8500_serial_remove(struct platform_device *pdev)
@@ -639,8 +637,8 @@
struct vt8500_port *vt8500_port = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
+ clk_disable_unprepare(vt8500_port->clk);
uart_remove_one_port(&vt8500_uart_driver, &vt8500_port->uart);
- kfree(vt8500_port);
return 0;
}
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 9ab9103..ba451c7 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -17,6 +17,7 @@
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/console.h>
+#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/of.h>
@@ -147,15 +148,11 @@
static irqreturn_t xuartps_isr(int irq, void *dev_id)
{
struct uart_port *port = (struct uart_port *)dev_id;
- struct tty_struct *tty;
unsigned long flags;
unsigned int isrstatus, numbytes;
unsigned int data;
char status = TTY_NORMAL;
- /* Get the tty which could be NULL so don't assume it's valid */
- tty = tty_port_tty_get(&port->state->port);
-
spin_lock_irqsave(&port->lock, flags);
/* Read the interrupt status register to determine which
@@ -187,14 +184,11 @@
} else if (isrstatus & XUARTPS_IXR_OVERRUN)
port->icount.overrun++;
- if (tty)
- uart_insert_char(port, isrstatus,
- XUARTPS_IXR_OVERRUN, data,
- status);
+ uart_insert_char(port, isrstatus, XUARTPS_IXR_OVERRUN,
+ data, status);
}
spin_unlock(&port->lock);
- if (tty)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->state->port);
spin_lock(&port->lock);
}
@@ -237,7 +231,6 @@
/* be sure to release the lock and tty before leaving */
spin_unlock_irqrestore(&port->lock, flags);
- tty_kref_put(tty);
return IRQ_HANDLED;
}
@@ -944,16 +937,18 @@
int rc;
struct uart_port *port;
struct resource *res, *res2;
- int clk = 0;
+ struct clk *clk;
- const unsigned int *prop;
-
- prop = of_get_property(pdev->dev.of_node, "clock", NULL);
- if (prop)
- clk = be32_to_cpup(prop);
- if (!clk) {
+ clk = of_clk_get(pdev->dev.of_node, 0);
+ if (IS_ERR(clk)) {
dev_err(&pdev->dev, "no clock specified\n");
- return -ENODEV;
+ return PTR_ERR(clk);
+ }
+
+ rc = clk_prepare_enable(clk);
+ if (rc) {
+ dev_err(&pdev->dev, "could not enable clock\n");
+ return -EBUSY;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -978,7 +973,8 @@
port->mapbase = res->start;
port->irq = res2->start;
port->dev = &pdev->dev;
- port->uartclk = clk;
+ port->uartclk = clk_get_rate(clk);
+ port->private_data = clk;
dev_set_drvdata(&pdev->dev, port);
rc = uart_add_one_port(&xuartps_uart_driver, port);
if (rc) {
@@ -1000,14 +996,14 @@
static int xuartps_remove(struct platform_device *pdev)
{
struct uart_port *port = dev_get_drvdata(&pdev->dev);
- int rc = 0;
+ struct clk *clk = port->private_data;
+ int rc;
/* Remove the xuartps port from the serial core */
- if (port) {
- rc = uart_remove_one_port(&xuartps_uart_driver, port);
- dev_set_drvdata(&pdev->dev, NULL);
- port->mapbase = 0;
- }
+ rc = uart_remove_one_port(&xuartps_uart_driver, port);
+ dev_set_drvdata(&pdev->dev, NULL);
+ port->mapbase = 0;
+ clk_disable_unprepare(clk);
return rc;
}
@@ -1048,7 +1044,7 @@
static struct platform_driver xuartps_platform_driver = {
.probe = xuartps_probe, /* Probe method */
- .remove = __exit_p(xuartps_remove), /* Detach method */
+ .remove = xuartps_remove, /* Detach method */
.suspend = xuartps_suspend, /* Suspend */
.resume = xuartps_resume, /* Resume after a suspend */
.driver = {
diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index 92c00b2..6a16987 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -603,7 +603,7 @@
uart_insert_char(uport, status, Rx_OVR, ch, flag);
}
- tty_flip_buffer_push(uport->state->port.tty);
+ tty_flip_buffer_push(&uport->state->port);
}
static void zs_raw_transmit_chars(struct zs_port *zport)
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index 9e071f6..555fdc0 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -291,8 +291,7 @@
bool lcr_mem_requested;
u32 misc_ctrl_value;
- char flag_buf[MAX_ASYNC_BUFFER_SIZE];
- char char_buf[MAX_ASYNC_BUFFER_SIZE];
+ char *flag_buf;
bool drop_rts_on_tx_done;
bool loopmode_insert_requested;
@@ -1440,7 +1439,6 @@
u16 status;
int work = 0;
unsigned char DataByte;
- struct tty_struct *tty = info->port.tty;
struct mgsl_icount *icount = &info->icount;
if ( debug_level >= DEBUG_LEVEL_ISR )
@@ -1502,19 +1500,19 @@
if (status & RXSTATUS_BREAK_RECEIVED) {
flag = TTY_BREAK;
if (info->port.flags & ASYNC_SAK)
- do_SAK(tty);
+ do_SAK(info->port.tty);
} else if (status & RXSTATUS_PARITY_ERROR)
flag = TTY_PARITY;
else if (status & RXSTATUS_FRAMING_ERROR)
flag = TTY_FRAME;
} /* end of if (error) */
- tty_insert_flip_char(tty, DataByte, flag);
+ tty_insert_flip_char(&info->port, DataByte, flag);
if (status & RXSTATUS_OVERRUN) {
/* Overrun is special, since it's
* reported immediately, and doesn't
* affect the current character
*/
- work += tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ work += tty_insert_flip_char(&info->port, 0, TTY_OVERRUN);
}
}
@@ -1525,7 +1523,7 @@
}
if(work)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&info->port);
}
/* mgsl_isr_misc()
@@ -3416,7 +3414,7 @@
goto cleanup;
}
- info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -3898,7 +3896,13 @@
info->intermediate_rxbuffer = kmalloc(info->max_frame_size, GFP_KERNEL | GFP_DMA);
if ( info->intermediate_rxbuffer == NULL )
return -ENOMEM;
-
+ /* unused flag buffer to satisfy receive_buf calling interface */
+ info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL);
+ if (!info->flag_buf) {
+ kfree(info->intermediate_rxbuffer);
+ info->intermediate_rxbuffer = NULL;
+ return -ENOMEM;
+ }
return 0;
} /* end of mgsl_alloc_intermediate_rxbuffer_memory() */
@@ -3917,6 +3921,8 @@
{
kfree(info->intermediate_rxbuffer);
info->intermediate_rxbuffer = NULL;
+ kfree(info->flag_buf);
+ info->flag_buf = NULL;
} /* end of mgsl_free_intermediate_rxbuffer_memory() */
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index aba1e59..ac8599a 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -317,8 +317,7 @@
unsigned char *tx_buf;
int tx_count;
- char flag_buf[MAX_ASYNC_BUFFER_SIZE];
- char char_buf[MAX_ASYNC_BUFFER_SIZE];
+ char *flag_buf;
bool drop_rts_on_tx_done;
struct _input_signal_events input_signal_events;
@@ -683,7 +682,7 @@
}
mutex_lock(&info->port.mutex);
- info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -1855,7 +1854,6 @@
*/
static void rx_async(struct slgt_info *info)
{
- struct tty_struct *tty = info->port.tty;
struct mgsl_icount *icount = &info->icount;
unsigned int start, end;
unsigned char *p;
@@ -1894,10 +1892,8 @@
else if (status & BIT0)
stat = TTY_FRAME;
}
- if (tty) {
- tty_insert_flip_char(tty, ch, stat);
- chars++;
- }
+ tty_insert_flip_char(&info->port, ch, stat);
+ chars++;
}
if (i < count) {
@@ -1918,8 +1914,8 @@
break;
}
- if (tty && chars)
- tty_flip_buffer_push(tty);
+ if (chars)
+ tty_flip_buffer_push(&info->port);
}
/*
@@ -1961,8 +1957,6 @@
struct slgt_info *info = container_of(work, struct slgt_info, task);
int action;
- if (!info)
- return;
info->bh_running = true;
while((action = bh_action(info))) {
@@ -2183,7 +2177,7 @@
if (info->port.tty) {
if (!(status & info->ignore_status_mask)) {
if (info->read_status_mask & MASK_BREAK) {
- tty_insert_flip_char(info->port.tty, 0, TTY_BREAK);
+ tty_insert_flip_char(&info->port, 0, TTY_BREAK);
if (info->port.flags & ASYNC_SAK)
do_SAK(info->port.tty);
}
@@ -3355,11 +3349,24 @@
return retval;
}
+/*
+ * allocate buffers used for calling line discipline receive_buf
+ * directly in synchronous mode
+ * note: add 5 bytes to max frame size to allow appending
+ * 32-bit CRC and status byte when configured to do so
+ */
static int alloc_tmp_rbuf(struct slgt_info *info)
{
info->tmp_rbuf = kmalloc(info->max_frame_size + 5, GFP_KERNEL);
if (info->tmp_rbuf == NULL)
return -ENOMEM;
+ /* unused flag buffer to satisfy receive_buf calling interface */
+ info->flag_buf = kzalloc(info->max_frame_size + 5, GFP_KERNEL);
+ if (!info->flag_buf) {
+ kfree(info->tmp_rbuf);
+ info->tmp_rbuf = NULL;
+ return -ENOMEM;
+ }
return 0;
}
@@ -3367,6 +3374,8 @@
{
kfree(info->tmp_rbuf);
info->tmp_rbuf = NULL;
+ kfree(info->flag_buf);
+ info->flag_buf = NULL;
}
/*
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index fd43fb6..5454025 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -262,8 +262,7 @@
bool sca_statctrl_requested;
u32 misc_ctrl_value;
- char flag_buf[MAX_ASYNC_BUFFER_SIZE];
- char char_buf[MAX_ASYNC_BUFFER_SIZE];
+ char *flag_buf;
bool drop_rts_on_tx_done;
struct _input_signal_events input_signal_events;
@@ -762,7 +761,7 @@
goto cleanup;
}
- info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -2008,9 +2007,6 @@
SLMP_INFO *info = container_of(work, SLMP_INFO, task);
int action;
- if (!info)
- return;
-
if ( debug_level >= DEBUG_LEVEL_BH )
printk( "%s(%d):%s bh_handler() entry\n",
__FILE__,__LINE__,info->device_name);
@@ -2132,13 +2128,11 @@
/* process break detection if tty control
* is not set to ignore it
*/
- if ( tty ) {
- if (!(status & info->ignore_status_mask1)) {
- if (info->read_status_mask1 & BRKD) {
- tty_insert_flip_char(tty, 0, TTY_BREAK);
- if (info->port.flags & ASYNC_SAK)
- do_SAK(tty);
- }
+ if (!(status & info->ignore_status_mask1)) {
+ if (info->read_status_mask1 & BRKD) {
+ tty_insert_flip_char(&info->port, 0, TTY_BREAK);
+ if (tty && (info->port.flags & ASYNC_SAK))
+ do_SAK(tty);
}
}
}
@@ -2170,7 +2164,6 @@
{
u16 status;
unsigned char DataByte;
- struct tty_struct *tty = info->port.tty;
struct mgsl_icount *icount = &info->icount;
if ( debug_level >= DEBUG_LEVEL_ISR )
@@ -2203,26 +2196,22 @@
status &= info->read_status_mask2;
- if ( tty ) {
- if (status & PE)
- flag = TTY_PARITY;
- else if (status & FRME)
- flag = TTY_FRAME;
- if (status & OVRN) {
- /* Overrun is special, since it's
- * reported immediately, and doesn't
- * affect the current character
- */
- over = true;
- }
+ if (status & PE)
+ flag = TTY_PARITY;
+ else if (status & FRME)
+ flag = TTY_FRAME;
+ if (status & OVRN) {
+ /* Overrun is special, since it's
+ * reported immediately, and doesn't
+ * affect the current character
+ */
+ over = true;
}
} /* end of if (error) */
- if ( tty ) {
- tty_insert_flip_char(tty, DataByte, flag);
- if (over)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
+ tty_insert_flip_char(&info->port, DataByte, flag);
+ if (over)
+ tty_insert_flip_char(&info->port, 0, TTY_OVERRUN);
}
if ( debug_level >= DEBUG_LEVEL_ISR ) {
@@ -2232,8 +2221,7 @@
icount->frame,icount->overrun);
}
- if ( tty )
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&info->port);
}
static void isr_txeom(SLMP_INFO * info, unsigned char status)
@@ -3553,6 +3541,13 @@
info->tmp_rx_buf = kmalloc(info->max_frame_size, GFP_KERNEL);
if (info->tmp_rx_buf == NULL)
return -ENOMEM;
+ /* unused flag buffer to satisfy receive_buf calling interface */
+ info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL);
+ if (!info->flag_buf) {
+ kfree(info->tmp_rx_buf);
+ info->tmp_rx_buf = NULL;
+ return -ENOMEM;
+ }
return 0;
}
@@ -3560,6 +3555,8 @@
{
kfree(info->tmp_rx_buf);
info->tmp_rx_buf = NULL;
+ kfree(info->flag_buf);
+ info->flag_buf = NULL;
}
static int claim_resources(SLMP_INFO *info)
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 45d9161..61ec4dd 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -119,11 +119,14 @@
struct tty_bufhead *buf = &port->buf;
struct tty_buffer *thead;
- while ((thead = buf->head) != NULL) {
- buf->head = thead->next;
- tty_buffer_free(port, thead);
+ if (unlikely(buf->head == NULL))
+ return;
+ while ((thead = buf->head->next) != NULL) {
+ tty_buffer_free(port, buf->head);
+ buf->head = thead;
}
- buf->tail = NULL;
+ WARN_ON(buf->head != buf->tail);
+ buf->head->read = buf->head->commit;
}
/**
@@ -194,19 +197,22 @@
have queued and recycle that ? */
}
/**
- * __tty_buffer_request_room - grow tty buffer if needed
+ * tty_buffer_request_room - grow tty buffer if needed
* @tty: tty structure
* @size: size desired
*
* Make at least size bytes of linear space available for the tty
* buffer. If we fail return the size we managed to find.
- * Locking: Caller must hold port->buf.lock
+ *
+ * Locking: Takes port->buf.lock
*/
-static int __tty_buffer_request_room(struct tty_port *port, size_t size)
+int tty_buffer_request_room(struct tty_port *port, size_t size)
{
struct tty_bufhead *buf = &port->buf;
struct tty_buffer *b, *n;
int left;
+ unsigned long flags;
+ spin_lock_irqsave(&buf->lock, flags);
/* OPTIMISATION: We could keep a per tty "zero" sized buffer to
remove this conditional if its worth it. This would be invisible
to the callers */
@@ -228,37 +234,14 @@
} else
size = left;
}
-
+ spin_unlock_irqrestore(&buf->lock, flags);
return size;
}
-
-
-/**
- * tty_buffer_request_room - grow tty buffer if needed
- * @tty: tty structure
- * @size: size desired
- *
- * Make at least size bytes of linear space available for the tty
- * buffer. If we fail return the size we managed to find.
- *
- * Locking: Takes port->buf.lock
- */
-int tty_buffer_request_room(struct tty_struct *tty, size_t size)
-{
- struct tty_port *port = tty->port;
- unsigned long flags;
- int length;
-
- spin_lock_irqsave(&port->buf.lock, flags);
- length = __tty_buffer_request_room(port, size);
- spin_unlock_irqrestore(&port->buf.lock, flags);
- return length;
-}
EXPORT_SYMBOL_GPL(tty_buffer_request_room);
/**
* tty_insert_flip_string_fixed_flag - Add characters to the tty buffer
- * @tty: tty structure
+ * @port: tty port
* @chars: characters
* @flag: flag value for each character
* @size: size
@@ -269,29 +252,21 @@
* Locking: Called functions may take port->buf.lock
*/
-int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
+int tty_insert_flip_string_fixed_flag(struct tty_port *port,
const unsigned char *chars, char flag, size_t size)
{
- struct tty_bufhead *buf = &tty->port->buf;
int copied = 0;
do {
int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
- int space;
- unsigned long flags;
- struct tty_buffer *tb;
-
- spin_lock_irqsave(&buf->lock, flags);
- space = __tty_buffer_request_room(tty->port, goal);
- tb = buf->tail;
+ int space = tty_buffer_request_room(port, goal);
+ struct tty_buffer *tb = port->buf.tail;
/* If there is no space then tb may be NULL */
if (unlikely(space == 0)) {
- spin_unlock_irqrestore(&buf->lock, flags);
break;
}
memcpy(tb->char_buf_ptr + tb->used, chars, space);
memset(tb->flag_buf_ptr + tb->used, flag, space);
tb->used += space;
- spin_unlock_irqrestore(&buf->lock, flags);
copied += space;
chars += space;
/* There is a small chance that we need to split the data over
@@ -303,7 +278,7 @@
/**
* tty_insert_flip_string_flags - Add characters to the tty buffer
- * @tty: tty structure
+ * @port: tty port
* @chars: characters
* @flags: flag bytes
* @size: size
@@ -315,29 +290,21 @@
* Locking: Called functions may take port->buf.lock
*/
-int tty_insert_flip_string_flags(struct tty_struct *tty,
+int tty_insert_flip_string_flags(struct tty_port *port,
const unsigned char *chars, const char *flags, size_t size)
{
- struct tty_bufhead *buf = &tty->port->buf;
int copied = 0;
do {
int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
- int space;
- unsigned long __flags;
- struct tty_buffer *tb;
-
- spin_lock_irqsave(&buf->lock, __flags);
- space = __tty_buffer_request_room(tty->port, goal);
- tb = buf->tail;
+ int space = tty_buffer_request_room(port, goal);
+ struct tty_buffer *tb = port->buf.tail;
/* If there is no space then tb may be NULL */
if (unlikely(space == 0)) {
- spin_unlock_irqrestore(&buf->lock, __flags);
break;
}
memcpy(tb->char_buf_ptr + tb->used, chars, space);
memcpy(tb->flag_buf_ptr + tb->used, flags, space);
tb->used += space;
- spin_unlock_irqrestore(&buf->lock, __flags);
copied += space;
chars += space;
flags += space;
@@ -350,7 +317,7 @@
/**
* tty_schedule_flip - push characters to ldisc
- * @tty: tty to push from
+ * @port: tty port to push from
*
* Takes any pending buffers and transfers their ownership to the
* ldisc side of the queue. It then schedules those characters for
@@ -361,11 +328,11 @@
* Locking: Takes port->buf.lock
*/
-void tty_schedule_flip(struct tty_struct *tty)
+void tty_schedule_flip(struct tty_port *port)
{
- struct tty_bufhead *buf = &tty->port->buf;
+ struct tty_bufhead *buf = &port->buf;
unsigned long flags;
- WARN_ON(tty->low_latency);
+ WARN_ON(port->low_latency);
spin_lock_irqsave(&buf->lock, flags);
if (buf->tail != NULL)
@@ -377,7 +344,7 @@
/**
* tty_prepare_flip_string - make room for characters
- * @tty: tty
+ * @port: tty port
* @chars: return pointer for character write area
* @size: desired size
*
@@ -390,31 +357,23 @@
* Locking: May call functions taking port->buf.lock
*/
-int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars,
+int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
size_t size)
{
- struct tty_bufhead *buf = &tty->port->buf;
- int space;
- unsigned long flags;
- struct tty_buffer *tb;
-
- spin_lock_irqsave(&buf->lock, flags);
- space = __tty_buffer_request_room(tty->port, size);
-
- tb = buf->tail;
+ int space = tty_buffer_request_room(port, size);
if (likely(space)) {
+ struct tty_buffer *tb = port->buf.tail;
*chars = tb->char_buf_ptr + tb->used;
memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space);
tb->used += space;
}
- spin_unlock_irqrestore(&buf->lock, flags);
return space;
}
EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
/**
* tty_prepare_flip_string_flags - make room for characters
- * @tty: tty
+ * @port: tty port
* @chars: return pointer for character write area
* @flags: return pointer for status flag write area
* @size: desired size
@@ -428,24 +387,16 @@
* Locking: May call functions taking port->buf.lock
*/
-int tty_prepare_flip_string_flags(struct tty_struct *tty,
+int tty_prepare_flip_string_flags(struct tty_port *port,
unsigned char **chars, char **flags, size_t size)
{
- struct tty_bufhead *buf = &tty->port->buf;
- int space;
- unsigned long __flags;
- struct tty_buffer *tb;
-
- spin_lock_irqsave(&buf->lock, __flags);
- space = __tty_buffer_request_room(tty->port, size);
-
- tb = buf->tail;
+ int space = tty_buffer_request_room(port, size);
if (likely(space)) {
+ struct tty_buffer *tb = port->buf.tail;
*chars = tb->char_buf_ptr + tb->used;
*flags = tb->flag_buf_ptr + tb->used;
tb->used += space;
}
- spin_unlock_irqrestore(&buf->lock, __flags);
return space;
}
EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags);
@@ -539,16 +490,17 @@
*/
void tty_flush_to_ldisc(struct tty_struct *tty)
{
- if (!tty->low_latency)
+ if (!tty->port->low_latency)
flush_work(&tty->port->buf.work);
}
/**
* tty_flip_buffer_push - terminal
- * @tty: tty to push
+ * @port: tty port to push
*
* Queue a push of the terminal flip buffers to the line discipline. This
- * function must not be called from IRQ context if tty->low_latency is set.
+ * function must not be called from IRQ context if port->low_latency is
+ * set.
*
* In the event of the queue being busy for flipping the work will be
* held off and retried later.
@@ -556,9 +508,9 @@
* Locking: tty buffer lock. Driver locks in low latency mode.
*/
-void tty_flip_buffer_push(struct tty_struct *tty)
+void tty_flip_buffer_push(struct tty_port *port)
{
- struct tty_bufhead *buf = &tty->port->buf;
+ struct tty_bufhead *buf = &port->buf;
unsigned long flags;
spin_lock_irqsave(&buf->lock, flags);
@@ -566,7 +518,7 @@
buf->tail->commit = buf->tail->used;
spin_unlock_irqrestore(&buf->lock, flags);
- if (tty->low_latency)
+ if (port->low_latency)
flush_to_ldisc(&buf->work);
else
schedule_work(&buf->work);
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index da9fde8..54a254a 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -536,7 +536,7 @@
* __tty_hangup - actual handler for hangup events
* @work: tty device
*
- * This can be called by the "eventd" kernel thread. That is process
+ * This can be called by a "kworker" kernel thread. That is process
* synchronous but doesn't hold any locks, so we need to make sure we
* have the appropriate locks for what we're doing.
*
diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index 8481b29d..cc0fc52 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -1096,12 +1096,16 @@
ld = tty_ldisc_ref_wait(tty);
switch (arg) {
case TCIFLUSH:
- if (ld && ld->ops->flush_buffer)
+ if (ld && ld->ops->flush_buffer) {
ld->ops->flush_buffer(tty);
+ tty_unthrottle(tty);
+ }
break;
case TCIOFLUSH:
- if (ld && ld->ops->flush_buffer)
+ if (ld && ld->ops->flush_buffer) {
ld->ops->flush_buffer(tty);
+ tty_unthrottle(tty);
+ }
/* fall through */
case TCOFLUSH:
tty_driver_flush_buffer(tty);
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index c578229..d794087 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -64,7 +64,9 @@
return;
}
raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- wake_up(&ld->wq_idle);
+
+ if (waitqueue_active(&ld->wq_idle))
+ wake_up(&ld->wq_idle);
}
/**
@@ -934,17 +936,17 @@
* race with the set_ldisc code path.
*/
- tty_lock_pair(tty, o_tty);
tty_ldisc_halt(tty);
- tty_ldisc_flush_works(tty);
- if (o_tty) {
+ if (o_tty)
tty_ldisc_halt(o_tty);
- tty_ldisc_flush_works(o_tty);
- }
+ tty_ldisc_flush_works(tty);
+ if (o_tty)
+ tty_ldisc_flush_works(o_tty);
+
+ tty_lock_pair(tty, o_tty);
/* This will need doing differently if we need to lock */
tty_ldisc_kill(tty);
-
if (o_tty)
tty_ldisc_kill(o_tty);
diff --git a/drivers/tty/vt/Makefile b/drivers/tty/vt/Makefile
index 14a51c9..17ae94c 100644
--- a/drivers/tty/vt/Makefile
+++ b/drivers/tty/vt/Makefile
@@ -27,8 +27,6 @@
ifdef GENERATE_KEYMAP
$(obj)/defkeymap.c: $(obj)/%.c: $(src)/%.map
- loadkeys --mktable $< > [email protected]
- sed -e 's/^static *//' [email protected] > $@
- rm [email protected]
+ loadkeys --mktable $< > $@
endif
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 681765b..a9af1b9a 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -307,26 +307,17 @@
*/
static void put_queue(struct vc_data *vc, int ch)
{
- struct tty_struct *tty = vc->port.tty;
-
- if (tty) {
- tty_insert_flip_char(tty, ch, 0);
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(&vc->port, ch, 0);
+ tty_schedule_flip(&vc->port);
}
static void puts_queue(struct vc_data *vc, char *cp)
{
- struct tty_struct *tty = vc->port.tty;
-
- if (!tty)
- return;
-
while (*cp) {
- tty_insert_flip_char(tty, *cp, 0);
+ tty_insert_flip_char(&vc->port, *cp, 0);
cp++;
}
- tty_schedule_flip(tty);
+ tty_schedule_flip(&vc->port);
}
static void applkey(struct vc_data *vc, int key, char mode)
@@ -582,12 +573,8 @@
static void fn_send_intr(struct vc_data *vc)
{
- struct tty_struct *tty = vc->port.tty;
-
- if (!tty)
- return;
- tty_insert_flip_char(tty, 0, TTY_BREAK);
- tty_schedule_flip(tty);
+ tty_insert_flip_char(&vc->port, 0, TTY_BREAK);
+ tty_schedule_flip(&vc->port);
}
static void fn_scroll_forw(struct vc_data *vc)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 8fd8968..1a27280 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1333,13 +1333,13 @@
update_attr(vc);
}
-static void respond_string(const char *p, struct tty_struct *tty)
+static void respond_string(const char *p, struct tty_port *port)
{
while (*p) {
- tty_insert_flip_char(tty, *p, 0);
+ tty_insert_flip_char(port, *p, 0);
p++;
}
- tty_schedule_flip(tty);
+ tty_schedule_flip(port);
}
static void cursor_report(struct vc_data *vc, struct tty_struct *tty)
@@ -1347,17 +1347,17 @@
char buf[40];
sprintf(buf, "\033[%d;%dR", vc->vc_y + (vc->vc_decom ? vc->vc_top + 1 : 1), vc->vc_x + 1);
- respond_string(buf, tty);
+ respond_string(buf, tty->port);
}
static inline void status_report(struct tty_struct *tty)
{
- respond_string("\033[0n", tty); /* Terminal ok */
+ respond_string("\033[0n", tty->port); /* Terminal ok */
}
-static inline void respond_ID(struct tty_struct * tty)
+static inline void respond_ID(struct tty_struct *tty)
{
- respond_string(VT102ID, tty);
+ respond_string(VT102ID, tty->port);
}
void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry)
@@ -1366,7 +1366,7 @@
sprintf(buf, "\033[M%c%c%c", (char)(' ' + butt), (char)('!' + mrx),
(char)('!' + mry));
- respond_string(buf, tty);
+ respond_string(buf, tty->port);
}
/* invoked via ioctl(TIOCLINUX) and through set_selection */
diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
index 2519e32..316aac8 100644
--- a/drivers/usb/class/Kconfig
+++ b/drivers/usb/class/Kconfig
@@ -6,7 +6,7 @@
config USB_ACM
tristate "USB Modem (CDC ACM) support"
- depends on USB
+ depends on USB && TTY
---help---
This driver supports USB modems and ISDN adapters which support the
Communication Device Class Abstract Control Model interface.
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 2d92cce..8ac25ad 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -410,19 +410,12 @@
static void acm_process_read_urb(struct acm *acm, struct urb *urb)
{
- struct tty_struct *tty;
-
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&acm->port);
- if (!tty)
- return;
-
- tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
- tty_flip_buffer_push(tty);
-
- tty_kref_put(tty);
+ tty_insert_flip_string(&acm->port, urb->transfer_buffer,
+ urb->actual_length);
+ tty_flip_buffer_push(&acm->port);
}
static void acm_read_bulk_callback(struct urb *urb)
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 14625fd..a1bd951 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -750,6 +750,7 @@
config USB_G_SERIAL
tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
+ depends on TTY
select USB_LIBCOMPOSITE
help
The Serial Gadget talks to the Linux-USB generic serial driver.
@@ -799,6 +800,8 @@
For more information, see Documentation/usb/gadget_printer.txt
which includes sample code for accessing the device file.
+if TTY
+
config USB_CDC_COMPOSITE
tristate "CDC Composite Device (Ethernet and ACM)"
depends on NET
@@ -879,6 +882,8 @@
If unsure, say "y".
+endif # TTY
+
config USB_G_HID
tristate "HID Gadget"
select USB_LIBCOMPOSITE
@@ -895,6 +900,7 @@
# Standalone / single function gadgets
config USB_G_DBGP
tristate "EHCI Debug Device Gadget"
+ depends on TTY
select USB_LIBCOMPOSITE
help
This gadget emulates an EHCI Debug device. This is useful when you want
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 598dcc1..46b1cc7 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -495,12 +495,8 @@
req = list_first_entry(queue, struct usb_request, list);
- /* discard data if tty was closed */
- if (!tty)
- goto recycle;
-
/* leave data queued if tty was rx throttled */
- if (test_bit(TTY_THROTTLED, &tty->flags))
+ if (tty && test_bit(TTY_THROTTLED, &tty->flags))
break;
switch (req->status) {
@@ -533,7 +529,8 @@
size -= n;
}
- count = tty_insert_flip_string(tty, packet, size);
+ count = tty_insert_flip_string(&port->port, packet,
+ size);
if (count)
do_push = true;
if (count != size) {
@@ -546,7 +543,7 @@
}
port->n_read = 0;
}
-recycle:
+
list_move(&req->list, &port->read_pool);
port->read_started--;
}
@@ -554,8 +551,8 @@
/* Push from tty to ldisc; without low_latency set this is handled by
* a workqueue, so we won't get callbacks and can hold port_lock
*/
- if (tty && do_push)
- tty_flip_buffer_push(tty);
+ if (do_push)
+ tty_flip_buffer_push(&port->port);
/* We want our data queue to become empty ASAP, keeping data
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 76f4622..d8e35fe 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -4,7 +4,7 @@
menuconfig USB_SERIAL
tristate "USB Serial Converter support"
- depends on USB
+ depends on USB && TTY
---help---
Say Y here if you have a USB device that provides normal serial
ports, or acts like a serial device, and you want to connect it to
diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index 6d110a3..6e320ce 100644
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -119,9 +119,8 @@
return 0;
}
-static int aircable_process_packet(struct tty_struct *tty,
- struct usb_serial_port *port, int has_headers,
- char *packet, int len)
+static int aircable_process_packet(struct usb_serial_port *port,
+ int has_headers, char *packet, int len)
{
if (has_headers) {
len -= HCI_HEADER_LENGTH;
@@ -132,7 +131,7 @@
return 0;
}
- tty_insert_flip_string(tty, packet, len);
+ tty_insert_flip_string(&port->port, packet, len);
return len;
}
@@ -141,28 +140,22 @@
{
struct usb_serial_port *port = urb->context;
char *data = (char *)urb->transfer_buffer;
- struct tty_struct *tty;
int has_headers;
int count;
int len;
int i;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
has_headers = (urb->actual_length > 2 && data[0] == RX_HEADER_0);
count = 0;
for (i = 0; i < urb->actual_length; i += HCI_COMPLETE_FRAME) {
len = min_t(int, urb->actual_length - i, HCI_COMPLETE_FRAME);
- count += aircable_process_packet(tty, port, has_headers,
+ count += aircable_process_packet(port, has_headers,
&data[i], len);
}
if (count)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static struct usb_serial_driver aircable_device = {
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index a88882c..cbd904b 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -674,7 +674,6 @@
{
struct usb_serial_port *port = urb->context;
struct ark3116_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
unsigned long flags;
@@ -689,10 +688,6 @@
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
if (lsr & UART_LSR_BRK_ERROR_BITS) {
if (lsr & UART_LSR_BI)
tty_flag = TTY_BREAK;
@@ -703,12 +698,11 @@
/* overrun is special, not associated with a char */
if (lsr & UART_LSR_OE)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
}
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static struct usb_serial_driver ark3116_device = {
diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
index b72a4c1..84217e78 100644
--- a/drivers/usb/serial/belkin_sa.c
+++ b/drivers/usb/serial/belkin_sa.c
@@ -242,7 +242,6 @@
{
struct usb_serial_port *port = urb->context;
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
unsigned char status;
@@ -259,10 +258,6 @@
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
if (status & BELKIN_SA_LSR_ERR) {
/* Break takes precedence over parity, which takes precedence
* over framing errors. */
@@ -276,13 +271,12 @@
/* Overrun is special, not associated with a char. */
if (status & BELKIN_SA_LSR_OE)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
}
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static void belkin_sa_set_termios(struct tty_struct *tty,
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index 69a4fa1..629bd289 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -324,7 +324,6 @@
struct usb_serial_port *port = urb->context;
struct cyberjack_private *priv = usb_get_serial_port_data(port);
struct device *dev = &port->dev;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
short todo;
int result;
@@ -337,16 +336,10 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (!tty) {
- dev_dbg(dev, "%s - ignoring since device not open\n", __func__);
- return;
- }
if (urb->actual_length) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
spin_lock(&priv->lock);
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index fd8c35f..8efa19d 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1214,10 +1214,10 @@
spin_unlock_irqrestore(&priv->lock, flags);
/* process read if there is data other than line status */
- if (tty && bytes > i) {
- tty_insert_flip_string_fixed_flag(tty, data + i,
+ if (bytes > i) {
+ tty_insert_flip_string_fixed_flag(&port->port, data + i,
tty_flag, bytes - i);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
spin_lock_irqsave(&priv->lock, flags);
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index 45d4af62..ebe45fa 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -1399,9 +1399,7 @@
static int digi_read_inb_callback(struct urb *urb)
{
-
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
struct digi_port *priv = usb_get_serial_port_data(port);
int opcode = ((unsigned char *)urb->transfer_buffer)[0];
int len = ((unsigned char *)urb->transfer_buffer)[1];
@@ -1425,7 +1423,6 @@
return -1;
}
- tty = tty_port_tty_get(&port->port);
spin_lock(&priv->dp_port_lock);
/* check for throttle; if set, do not resubmit read urb */
@@ -1435,13 +1432,13 @@
priv->dp_throttle_restart = 1;
/* receive data */
- if (tty && opcode == DIGI_CMD_RECEIVE_DATA) {
+ if (opcode == DIGI_CMD_RECEIVE_DATA) {
/* get flag from port_status */
flag = 0;
/* overrun is special, not associated with a char */
if (port_status & DIGI_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
@@ -1455,13 +1452,12 @@
/* data length is len-1 (one byte of len is port_status) */
--len;
if (len > 0) {
- tty_insert_flip_string_fixed_flag(tty, data, flag,
- len);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string_fixed_flag(&port->port, data,
+ flag, len);
+ tty_flip_buffer_push(&port->port);
}
}
spin_unlock(&priv->dp_port_lock);
- tty_kref_put(tty);
if (opcode == DIGI_CMD_RECEIVE_DISABLE)
dev_dbg(&port->dev, "%s: got RECEIVE_DISABLE\n", __func__);
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 6e4eb57..b1b2dc64 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -100,7 +100,6 @@
{
struct usb_serial_port *port = urb->context;
struct f81232_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
unsigned long flags;
@@ -117,10 +116,6 @@
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
@@ -133,19 +128,19 @@
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
if (port->port.console && port->sysrq) {
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(port, data[i]))
- tty_insert_flip_char(tty, data[i], tty_flag);
+ tty_insert_flip_char(&port->port, data[i],
+ tty_flag);
} else {
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static int set_control_lines(struct usb_device *dev, u8 value)
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index ba68835..eaa038d 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1960,9 +1960,8 @@
#define FTDI_RS_ERR_MASK (FTDI_RS_BI | FTDI_RS_PE | FTDI_RS_FE | FTDI_RS_OE)
-static int ftdi_process_packet(struct tty_struct *tty,
- struct usb_serial_port *port, struct ftdi_private *priv,
- char *packet, int len)
+static int ftdi_process_packet(struct usb_serial_port *port,
+ struct ftdi_private *priv, char *packet, int len)
{
int i;
char status;
@@ -2012,7 +2011,7 @@
/* Overrun is special, not associated with a char */
if (packet[1] & FTDI_RS_OE) {
priv->icount.overrun++;
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
}
}
@@ -2031,10 +2030,10 @@
if (port->port.console && port->sysrq) {
for (i = 0; i < len; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
- tty_insert_flip_char(tty, *ch, flag);
+ tty_insert_flip_char(&port->port, *ch, flag);
}
} else {
- tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
+ tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len);
}
return len;
@@ -2043,25 +2042,19 @@
static void ftdi_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
struct ftdi_private *priv = usb_get_serial_port_data(port);
char *data = (char *)urb->transfer_buffer;
int i;
int len;
int count = 0;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
len = min_t(int, urb->actual_length - i, priv->max_packet_size);
- count += ftdi_process_packet(tty, port, priv, &data[i], len);
+ count += ftdi_process_packet(port, priv, &data[i], len);
}
if (count)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 203358d..1a07b12 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -252,14 +252,11 @@
static void send_to_tty(struct usb_serial_port *port,
char *data, unsigned int actual_length)
{
- struct tty_struct *tty = tty_port_tty_get(&port->port);
-
- if (tty && actual_length) {
+ if (actual_length) {
usb_serial_debug_data(&port->dev, __func__, actual_length, data);
- tty_insert_flip_string(tty, data, actual_length);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&port->port, data, actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
}
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 2ea70a6..4c5c23f 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -313,30 +313,24 @@
void usb_serial_generic_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
char *ch = (char *)urb->transfer_buffer;
int i;
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
/* The per character mucking around with sysrq path it too slow for
stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases
where the USB serial is not a console anyway */
if (!port->port.console || !port->sysrq)
- tty_insert_flip_string(tty, ch, urb->actual_length);
+ tty_insert_flip_string(&port->port, ch, urb->actual_length);
else {
for (i = 0; i < urb->actual_length; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
- tty_insert_flip_char(tty, *ch, TTY_NORMAL);
+ tty_insert_flip_char(&port->port, *ch, TTY_NORMAL);
}
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
EXPORT_SYMBOL_GPL(usb_serial_generic_process_read_urb);
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 7b770c7..b00e5cb 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -232,8 +232,8 @@
unsigned char *buffer, __u16 bufferLength);
static void process_rcvd_status(struct edgeport_serial *edge_serial,
__u8 byte2, __u8 byte3);
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length);
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length);
static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
__u8 lsr, __u8 data);
@@ -1752,7 +1752,6 @@
struct device *dev = &edge_serial->serial->dev->dev;
struct usb_serial_port *port;
struct edgeport_port *edge_port;
- struct tty_struct *tty;
__u16 lastBufferLength;
__u16 rxLen;
@@ -1860,14 +1859,11 @@
edge_serial->rxPort];
edge_port = usb_get_serial_port_data(port);
if (edge_port->open) {
- tty = tty_port_tty_get(
- &edge_port->port->port);
- if (tty) {
- dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
- __func__, rxLen, edge_serial->rxPort);
- edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
- tty_kref_put(tty);
- }
+ dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
+ __func__, rxLen,
+ edge_serial->rxPort);
+ edge_tty_recv(edge_port->port, buffer,
+ rxLen);
edge_port->icount.rx += rxLen;
}
buffer += rxLen;
@@ -2017,20 +2013,20 @@
* edge_tty_recv
* this function passes data on to the tty flip buffer
*****************************************************************************/
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length)
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length)
{
int cnt;
- cnt = tty_insert_flip_string(tty, data, length);
+ cnt = tty_insert_flip_string(&port->port, data, length);
if (cnt < length) {
- dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
__func__, length - cnt);
}
data += cnt;
length -= cnt;
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
@@ -2086,14 +2082,9 @@
}
/* Place LSR data byte into Rx buffer */
- if (lsrData) {
- struct tty_struct *tty =
- tty_port_tty_get(&edge_port->port->port);
- if (tty) {
- edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
- tty_kref_put(tty);
- }
- }
+ if (lsrData)
+ edge_tty_recv(edge_port->port, &data, 1);
+
/* update input line counters */
icount = &edge_port->icount;
if (newLsr & LSR_BREAK)
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 82afc4d..b5ab0a5 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -201,8 +201,8 @@
static bool ignore_cpu_rev;
static int default_uart_mode; /* RS232 */
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length);
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length);
static void stop_read(struct edgeport_port *edge_port);
static int restart_read(struct edgeport_port *edge_port);
@@ -1543,7 +1543,6 @@
struct async_icount *icount;
__u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
LSR_FRM_ERR | LSR_BREAK));
- struct tty_struct *tty;
dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
@@ -1557,13 +1556,8 @@
new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
/* Place LSR data byte into Rx buffer */
- if (lsr_data) {
- tty = tty_port_tty_get(&edge_port->port->port);
- if (tty) {
- edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
- tty_kref_put(tty);
- }
- }
+ if (lsr_data)
+ edge_tty_recv(edge_port->port, &data, 1);
/* update input line counters */
icount = &edge_port->icount;
@@ -1679,7 +1673,6 @@
struct edgeport_port *edge_port = urb->context;
struct device *dev = &edge_port->port->dev;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
int retval = 0;
int port_number;
int status = urb->status;
@@ -1718,17 +1711,16 @@
++data;
}
- tty = tty_port_tty_get(&edge_port->port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
usb_serial_debug_data(dev, __func__, urb->actual_length, data);
if (edge_port->close_pending)
dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
__func__);
else
- edge_tty_recv(dev, tty, data, urb->actual_length);
+ edge_tty_recv(edge_port->port, data,
+ urb->actual_length);
edge_port->icount.rx += urb->actual_length;
}
- tty_kref_put(tty);
exit:
/* continue read unless stopped */
@@ -1743,16 +1735,16 @@
dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
}
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length)
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length)
{
int queued;
- queued = tty_insert_flip_string(tty, data, length);
+ queued = tty_insert_flip_string(&port->port, data, length);
if (queued < length)
- dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
__func__, length - queued);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
static void edge_bulk_out_callback(struct urb *urb)
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c
index e24e2d4..716930a 100644
--- a/drivers/usb/serial/ir-usb.c
+++ b/drivers/usb/serial/ir-usb.c
@@ -287,7 +287,6 @@
{
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
if (!urb->actual_length)
return;
@@ -302,12 +301,8 @@
if (urb->actual_length == 1)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
- tty_insert_flip_string(tty, data + 1, urb->actual_length - 1);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&port->port, data + 1, urb->actual_length - 1);
+ tty_flip_buffer_push(&port->port);
}
static void ir_set_termios_callback(struct urb *urb)
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index 1e1fbed..ff77027 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -581,7 +581,6 @@
{
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
int status = urb->status;
if (status) {
@@ -592,14 +591,12 @@
}
dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
- tty = tty_port_tty_get(&port->port);
if (data == NULL)
dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
- if (tty && urb->actual_length && data) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ if (urb->actual_length && data) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
iuu_led_activity_on(urb);
}
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 97bc49f..f6d7f68 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -291,7 +291,6 @@
int i, err;
int endpoint;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -304,8 +303,7 @@
}
port = urb->context;
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no errors on individual bytes, only
@@ -315,7 +313,7 @@
else
err = 0;
for (i = 1; i < urb->actual_length ; ++i)
- tty_insert_flip_char(tty, data[i], err);
+ tty_insert_flip_char(&port->port, data[i], err);
} else {
/* some bytes had errors, every byte has status */
dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
@@ -328,12 +326,12 @@
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
- tty_insert_flip_char(tty, data[i+1], flag);
+ tty_insert_flip_char(&port->port, data[i+1],
+ flag);
}
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
@@ -446,7 +444,6 @@
{
int err;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data;
struct keyspan_port_private *p_priv;
int status = urb->status;
@@ -469,12 +466,11 @@
p_priv = usb_get_serial_port_data(port);
data = urb->transfer_buffer;
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
@@ -669,7 +665,6 @@
int i, err;
int endpoint;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -682,12 +677,11 @@
}
port = urb->context;
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no error on any byte */
- tty_insert_flip_string(tty, data + 1,
+ tty_insert_flip_string(&port->port, data + 1,
urb->actual_length - 1);
} else {
/* some bytes had errors, every byte has status */
@@ -700,12 +694,12 @@
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
- tty_insert_flip_char(tty, data[i+1], flag);
+ tty_insert_flip_char(&port->port, data[i+1],
+ flag);
}
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
@@ -718,7 +712,6 @@
int i, len, x, err;
struct usb_serial *serial;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -743,7 +736,6 @@
return;
}
port = serial->port[data[i++]];
- tty = tty_port_tty_get(&port->port);
len = data[i++];
/* 0x80 bit is error flag */
@@ -751,7 +743,8 @@
/* no error on any byte */
i++;
for (x = 1; x < len ; ++x)
- tty_insert_flip_char(tty, data[i++], 0);
+ tty_insert_flip_char(&port->port,
+ data[i++], 0);
} else {
/*
* some bytes had errors, every byte has status
@@ -765,13 +758,12 @@
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
- tty_insert_flip_char(tty,
+ tty_insert_flip_char(&port->port,
data[i+1], flag);
i += 2;
}
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
}
@@ -792,7 +784,6 @@
int endpoint;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -808,12 +799,12 @@
p_priv = usb_get_serial_port_data(port);
if (urb->actual_length) {
- tty = tty_port_tty_get(&port->port);
/* if current mode is DMA, looks like usa28 format
otherwise looks like usa26 data format */
if (p_priv->baud > 57600)
- tty_insert_flip_string(tty, data, urb->actual_length);
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
else {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
@@ -824,8 +815,8 @@
else
err = 0;
for (i = 1; i < urb->actual_length ; ++i)
- tty_insert_flip_char(tty, data[i],
- err);
+ tty_insert_flip_char(&port->port,
+ data[i], err);
} else {
/* some bytes had errors, every byte has status */
dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
@@ -838,13 +829,12 @@
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
- tty_insert_flip_char(tty, data[i+1],
- flag);
+ tty_insert_flip_char(&port->port,
+ data[i+1], flag);
}
}
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 41b0109..3b17d5d 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -138,7 +138,6 @@
static void keyspan_pda_rx_interrupt(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int retval;
int status = urb->status;
@@ -163,14 +162,12 @@
/* see if the message is data or a status interrupt */
switch (data[0]) {
case 0:
- tty = tty_port_tty_get(&port->port);
/* rest of message is rx data */
- if (tty && urb->actual_length) {
- tty_insert_flip_string(tty, data + 1,
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data + 1,
urb->actual_length - 1);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
break;
case 1:
/* status interrupt */
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index fc9e14a..769d910 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -389,7 +389,6 @@
{
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
unsigned len;
/* empty urbs seem to happen, we ignore them */
@@ -401,19 +400,14 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
len = get_unaligned_le16(data);
if (len > urb->actual_length - KLSI_HDR_LEN) {
dev_dbg(&port->dev, "%s - packet length mismatch\n", __func__);
len = urb->actual_length - KLSI_HDR_LEN;
}
- tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&port->port, data + KLSI_HDR_LEN, len);
+ tty_flip_buffer_push(&port->port);
}
static void klsi_105_set_termios(struct tty_struct *tty,
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index b747ba6..903d938 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -324,7 +324,6 @@
{
int result;
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -333,8 +332,7 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
/* BEGIN DEBUG */
/*
@@ -353,10 +351,9 @@
*/
/* END DEBUG */
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index b691175..f42528e 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -531,7 +531,6 @@
{
struct usb_serial_port *port = urb->context;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int retval;
int status = urb->status;
@@ -561,13 +560,9 @@
*/
if (urb->transfer_buffer_length > 2) {
if (urb->actual_length) {
- tty = tty_port_tty_get(&port->port);
- if (tty) {
- tty_insert_flip_string(tty, data,
- urb->actual_length);
- tty_flip_buffer_push(tty);
- }
- tty_kref_put(tty);
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
goto exit;
}
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index 3d25844..bf3c7a2 100644
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -95,7 +95,6 @@
{
struct usb_serial_port *port = urb->context;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int throttled = 0;
int result = 0;
@@ -124,15 +123,13 @@
/* Set the data read from the usb port into the serial port buffer. */
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
/* Loop through the data copying each byte to the tty layer. */
- tty_insert_flip_string(tty, data, urb->actual_length);
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
/* Force the data to the tty layer. */
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
/* Set any port variables. */
spin_lock_irqsave(&metro_priv->lock, flags);
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index f57a6b1..e0ebec3 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -899,7 +899,6 @@
int retval;
unsigned char *data ;
struct usb_serial_port *port;
- struct tty_struct *tty;
int status = urb->status;
if (status) {
@@ -913,12 +912,10 @@
data = urb->transfer_buffer;
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
if (port->read_urb->status != -EINPROGRESS) {
retval = usb_submit_urb(port->read_urb, GFP_ATOMIC);
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 66d9e08..809fb32 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -744,7 +744,6 @@
struct usb_serial *serial;
struct usb_serial_port *port;
struct moschip_port *mos7840_port;
- struct tty_struct *tty;
int status = urb->status;
mos7840_port = urb->context;
@@ -773,12 +772,9 @@
usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
if (urb->actual_length) {
- tty = tty_port_tty_get(&mos7840_port->port->port);
- if (tty) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ struct tty_port *tport = &mos7840_port->port->port;
+ tty_insert_flip_string(tport, data, urb->actual_length);
+ tty_flip_buffer_push(tport);
mos7840_port->icount.rx += urb->actual_length;
smp_wmb();
dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx);
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
index 1566f8f..38725fc 100644
--- a/drivers/usb/serial/navman.c
+++ b/drivers/usb/serial/navman.c
@@ -32,7 +32,6 @@
{
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
int status = urb->status;
int result;
@@ -55,12 +54,10 @@
usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
- tty = tty_port_tty_get(&port->port);
- if (tty && urb->actual_length) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
exit:
result = usb_submit_urb(urb, GFP_ATOMIC);
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 7818af9..1e1cafe 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -174,13 +174,9 @@
}
if (urb->actual_length && header->oh_len) {
- struct tty_struct *tty = tty_port_tty_get(&port->port);
- if (tty) {
- tty_insert_flip_string(tty, data + OMNINET_DATAOFFSET,
- header->oh_len);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_insert_flip_string(&port->port, data + OMNINET_DATAOFFSET,
+ header->oh_len);
+ tty_flip_buffer_push(&port->port);
}
/* Continue trying to always read */
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index c6bfb83..e13e1a4d 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -51,15 +51,8 @@
static void opticon_process_data_packet(struct usb_serial_port *port,
const unsigned char *buf, size_t len)
{
- struct tty_struct *tty;
-
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
- tty_insert_flip_string(tty, buf, len);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&port->port, buf, len);
+ tty_flip_buffer_push(&port->port);
}
static void opticon_process_status_packet(struct usb_serial_port *port,
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
index d217fd6..a958fd4 100644
--- a/drivers/usb/serial/oti6858.c
+++ b/drivers/usb/serial/oti6858.c
@@ -820,7 +820,6 @@
{
struct usb_serial_port *port = urb->context;
struct oti6858_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
int status = urb->status;
@@ -835,12 +834,10 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (tty != NULL && urb->actual_length > 0) {
- tty_insert_flip_string(tty, data, urb->actual_length);
- tty_flip_buffer_push(tty);
+ if (urb->actual_length > 0) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
/* schedule the interrupt urb */
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 6002419..54adc91 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -772,7 +772,6 @@
{
struct usb_serial_port *port = urb->context;
struct pl2303_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
unsigned long flags;
@@ -789,10 +788,6 @@
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
@@ -805,19 +800,19 @@
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
if (port->port.console && port->sysrq) {
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(port, data[i]))
- tty_insert_flip_char(tty, data[i], tty_flag);
+ tty_insert_flip_char(&port->port, data[i],
+ tty_flag);
} else {
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
/* All of the device info needed for the PL2303 SIO serial converter */
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index d152be9..6850745 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -609,7 +609,6 @@
struct qt2_serial_private *serial_priv;
struct usb_serial_port *port;
struct qt2_port_private *port_priv;
- struct tty_struct *tty;
bool escapeflag;
unsigned char *ch;
int i;
@@ -620,15 +619,11 @@
return;
ch = urb->transfer_buffer;
- tty = NULL;
serial = urb->context;
serial_priv = usb_get_serial_data(serial);
port = serial->port[serial_priv->current_port];
port_priv = usb_get_serial_port_data(port);
- if (port_priv->is_open)
- tty = tty_port_tty_get(&port->port);
-
for (i = 0; i < urb->actual_length; i++) {
ch = (unsigned char *)urb->transfer_buffer + i;
if ((i <= (len - 3)) &&
@@ -666,10 +661,7 @@
__func__);
break;
}
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(&port->port);
newport = *(ch + 3);
@@ -683,10 +675,6 @@
serial_priv->current_port = newport;
port = serial->port[serial_priv->current_port];
port_priv = usb_get_serial_port_data(port);
- if (port_priv->is_open)
- tty = tty_port_tty_get(&port->port);
- else
- tty = NULL;
i += 3;
escapeflag = true;
break;
@@ -697,8 +685,8 @@
escapeflag = true;
break;
case QT2_CONTROL_ESCAPE:
- tty_buffer_request_room(tty, 2);
- tty_insert_flip_string(tty, ch, 2);
+ tty_buffer_request_room(&port->port, 2);
+ tty_insert_flip_string(&port->port, ch, 2);
i += 2;
escapeflag = true;
break;
@@ -712,16 +700,11 @@
continue;
}
- if (tty) {
- tty_buffer_request_room(tty, 1);
- tty_insert_flip_string(tty, ch, 1);
- }
+ tty_buffer_request_room(&port->port, 1);
+ tty_insert_flip_string(&port->port, ch, 1);
}
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(&port->port);
}
static void qt2_write_bulk_callback(struct urb *urb)
diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c
index c949ce6..21cd7bf 100644
--- a/drivers/usb/serial/safe_serial.c
+++ b/drivers/usb/serial/safe_serial.c
@@ -207,38 +207,31 @@
unsigned char *data = urb->transfer_buffer;
unsigned char length = urb->actual_length;
int actual_length;
- struct tty_struct *tty;
__u16 fcs;
if (!length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
if (!safe)
goto out;
fcs = fcs_compute10(data, length, CRC10_INITFCS);
if (fcs) {
dev_err(&port->dev, "%s - bad CRC %x\n", __func__, fcs);
- goto err;
+ return;
}
actual_length = data[length - 2] >> 2;
if (actual_length > (length - 2)) {
dev_err(&port->dev, "%s - inconsistent lengths %d:%d\n",
__func__, actual_length, length);
- goto err;
+ return;
}
dev_info(&urb->dev->dev, "%s - actual: %d\n", __func__, actual_length);
length = actual_length;
out:
- tty_insert_flip_string(tty, data, length);
- tty_flip_buffer_push(tty);
-err:
- tty_kref_put(tty);
+ tty_insert_flip_string(&port->port, data, length);
+ tty_flip_buffer_push(&port->port);
}
static int safe_prepare_write_buffer(struct usb_serial_port *port,
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index af06f2f..70aee8d 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -569,7 +569,6 @@
int err;
int endpoint;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -581,16 +580,12 @@
" endpoint %02x\n", __func__, status, endpoint);
} else {
if (urb->actual_length) {
- tty = tty_port_tty_get(&port->port);
- if (tty) {
- tty_insert_flip_string(tty, data,
- urb->actual_length);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
+ tty_flip_buffer_push(&port->port);
- tty_kref_put(tty);
- usb_serial_debug_data(&port->dev, __func__,
- urb->actual_length, data);
- }
+ usb_serial_debug_data(&port->dev, __func__,
+ urb->actual_length, data);
} else {
dev_dbg(&port->dev, "%s: empty read urb"
" received\n", __func__);
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
index a42536a..91ff8e3 100644
--- a/drivers/usb/serial/spcp8x5.c
+++ b/drivers/usb/serial/spcp8x5.c
@@ -462,7 +462,6 @@
{
struct usb_serial_port *port = urb->context;
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
u8 status;
@@ -481,9 +480,6 @@
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
if (status & UART_STATE_TRANSIENT_MASK) {
/* break takes precedence over parity, which takes precedence
@@ -498,17 +494,21 @@
/* overrun is special, not associated with a char */
if (status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
- if (status & UART_DCD)
- usb_serial_handle_dcd_change(port, tty,
- priv->line_status & MSR_STATUS_LINE_DCD);
+ if (status & UART_DCD) {
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ usb_serial_handle_dcd_change(port, tty,
+ priv->line_status & MSR_STATUS_LINE_DCD);
+ tty_kref_put(tty);
+ }
+ }
}
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 4543ea3..58bc7e7 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -582,8 +582,7 @@
}
-static int ssu100_process_packet(struct urb *urb,
- struct tty_struct *tty)
+static void ssu100_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
char *packet = (char *)urb->transfer_buffer;
@@ -598,7 +597,8 @@
if (packet[2] == 0x00) {
ssu100_update_lsr(port, packet[3], &flag);
if (flag == TTY_OVERRUN)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0,
+ TTY_OVERRUN);
}
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);
@@ -609,34 +609,17 @@
ch = packet;
if (!len)
- return 0; /* status only */
+ return; /* status only */
if (port->port.console && port->sysrq) {
for (i = 0; i < len; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
- tty_insert_flip_char(tty, *ch, flag);
+ tty_insert_flip_char(&port->port, *ch, flag);
}
} else
- tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
+ tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len);
- return len;
-}
-
-static void ssu100_process_read_urb(struct urb *urb)
-{
- struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
- int count;
-
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
- count = ssu100_process_packet(urb, tty);
-
- if (count)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static struct usb_serial_driver ssu100_device = {
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index 701fffa8..be05e6c 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -48,7 +48,6 @@
unsigned char *data = urb->transfer_buffer;
struct usb_serial_port *port = priv->port;
int status = urb->status;
- struct tty_struct *tty;
int result;
int data_length;
@@ -82,12 +81,8 @@
* we pretty much just ignore the size and send everything
* else to the tty layer.
*/
- tty = tty_port_tty_get(&port->port);
- if (tty) {
- tty_insert_flip_string(tty, &data[1], data_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_insert_flip_string(&port->port, &data[1], data_length);
+ tty_flip_buffer_push(&port->port);
} else {
dev_dbg(&priv->udev->dev,
"Improper amount of data received from the device, "
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index f2530d2..39cb9b8 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -121,8 +121,8 @@
static void ti_bulk_in_callback(struct urb *urb);
static void ti_bulk_out_callback(struct urb *urb);
-static void ti_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length);
+static void ti_recv(struct usb_serial_port *port, unsigned char *data,
+ int length);
static void ti_send(struct ti_port *tport);
static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
static int ti_get_lsr(struct ti_port *tport);
@@ -1118,7 +1118,6 @@
struct device *dev = &urb->dev->dev;
int status = urb->status;
int retval = 0;
- struct tty_struct *tty;
switch (status) {
case 0:
@@ -1145,24 +1144,18 @@
return;
}
- tty = tty_port_tty_get(&port->port);
- if (tty) {
- if (urb->actual_length) {
- usb_serial_debug_data(dev, __func__, urb->actual_length,
- urb->transfer_buffer);
+ if (urb->actual_length) {
+ usb_serial_debug_data(dev, __func__, urb->actual_length,
+ urb->transfer_buffer);
- if (!tport->tp_is_open)
- dev_dbg(dev, "%s - port closed, dropping data\n",
- __func__);
- else
- ti_recv(&urb->dev->dev, tty,
- urb->transfer_buffer,
- urb->actual_length);
- spin_lock(&tport->tp_lock);
- tport->tp_icount.rx += urb->actual_length;
- spin_unlock(&tport->tp_lock);
- }
- tty_kref_put(tty);
+ if (!tport->tp_is_open)
+ dev_dbg(dev, "%s - port closed, dropping data\n",
+ __func__);
+ else
+ ti_recv(port, urb->transfer_buffer, urb->actual_length);
+ spin_lock(&tport->tp_lock);
+ tport->tp_icount.rx += urb->actual_length;
+ spin_unlock(&tport->tp_lock);
}
exit:
@@ -1210,24 +1203,23 @@
}
-static void ti_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length)
+static void ti_recv(struct usb_serial_port *port, unsigned char *data,
+ int length)
{
int cnt;
do {
- cnt = tty_insert_flip_string(tty, data, length);
+ cnt = tty_insert_flip_string(&port->port, data, length);
if (cnt < length) {
- dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
__func__, length - cnt);
if (cnt == 0)
break;
}
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
data += cnt;
length -= cnt;
} while (length > 0);
-
}
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 01c94aa..a547c91 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -275,7 +275,6 @@
int err;
int endpoint;
struct usb_serial_port *port;
- struct tty_struct *tty;
struct device *dev;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@@ -288,16 +287,12 @@
dev_dbg(dev, "%s: nonzero status: %d on endpoint %02x.\n",
__func__, status, endpoint);
} else {
- tty = tty_port_tty_get(&port->port);
- if (tty) {
- if (urb->actual_length) {
- tty_insert_flip_string(tty, data,
- urb->actual_length);
- tty_flip_buffer_push(tty);
- } else
- dev_dbg(dev, "%s: empty read urb received\n", __func__);
- tty_kref_put(tty);
- }
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
+ tty_flip_buffer_push(&port->port);
+ } else
+ dev_dbg(dev, "%s: empty read urb received\n", __func__);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index 981b056..712f24db 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -8,7 +8,8 @@
proc-$(CONFIG_MMU) := mmu.o task_mmu.o
proc-y += inode.o root.o base.o generic.o array.o \
- proc_tty.o fd.o
+ fd.o
+proc-$(CONFIG_TTY) += proc_tty.o
proc-y += cmdline.o
proc-y += consoles.o
proc-y += cpuinfo.o
diff --git a/include/linux/console.h b/include/linux/console.h
index dedb082..3b709da 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -157,7 +157,12 @@
extern int braille_register_console(struct console *, int index,
char *console_options, char *braille_options);
extern int braille_unregister_console(struct console *);
+#ifdef CONFIG_TTY
extern void console_sysfs_notify(void);
+#else
+static inline void console_sysfs_notify(void)
+{ }
+#endif
extern bool console_suspend_enabled;
/* Suspend and resume console messages over PM events */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 0eb6579..19e8d7a 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1868,8 +1868,23 @@
#define PCI_VENDOR_ID_QUATECH 0x135C
#define PCI_DEVICE_ID_QUATECH_QSC100 0x0010
#define PCI_DEVICE_ID_QUATECH_DSC100 0x0020
+#define PCI_DEVICE_ID_QUATECH_DSC200 0x0030
+#define PCI_DEVICE_ID_QUATECH_QSC200 0x0040
#define PCI_DEVICE_ID_QUATECH_ESC100D 0x0050
#define PCI_DEVICE_ID_QUATECH_ESC100M 0x0060
+#define PCI_DEVICE_ID_QUATECH_QSCP100 0x0120
+#define PCI_DEVICE_ID_QUATECH_DSCP100 0x0130
+#define PCI_DEVICE_ID_QUATECH_QSCP200 0x0140
+#define PCI_DEVICE_ID_QUATECH_DSCP200 0x0150
+#define PCI_DEVICE_ID_QUATECH_QSCLP100 0x0170
+#define PCI_DEVICE_ID_QUATECH_DSCLP100 0x0180
+#define PCI_DEVICE_ID_QUATECH_DSC100E 0x0181
+#define PCI_DEVICE_ID_QUATECH_SSCLP100 0x0190
+#define PCI_DEVICE_ID_QUATECH_QSCLP200 0x01A0
+#define PCI_DEVICE_ID_QUATECH_DSCLP200 0x01B0
+#define PCI_DEVICE_ID_QUATECH_DSC200E 0x01B1
+#define PCI_DEVICE_ID_QUATECH_SSCLP200 0x01C0
+#define PCI_DEVICE_ID_QUATECH_ESCLP100 0x01E0
#define PCI_DEVICE_ID_QUATECH_SPPXP_100 0x0278
#define PCI_VENDOR_ID_SEALEVEL 0x135e
diff --git a/include/linux/platform_data/sccnxp.h b/include/linux/platform_data/serial-sccnxp.h
similarity index 93%
rename from include/linux/platform_data/sccnxp.h
rename to include/linux/platform_data/serial-sccnxp.h
index 7311ccd..215574d 100644
--- a/include/linux/platform_data/sccnxp.h
+++ b/include/linux/platform_data/serial-sccnxp.h
@@ -11,8 +11,8 @@
* (at your option) any later version.
*/
-#ifndef __SCCNXP_H
-#define __SCCNXP_H
+#ifndef _PLATFORM_DATA_SERIAL_SCCNXP_H_
+#define _PLATFORM_DATA_SERIAL_SCCNXP_H_
#define SCCNXP_MAX_UARTS 2
@@ -84,6 +84,8 @@
const u8 reg_shift;
/* Modem control lines configuration */
const u32 mctrl_cfg[SCCNXP_MAX_UARTS];
+ /* Timer value for polling mode (usecs) */
+ const unsigned int poll_time_us;
/* Called during startup */
void (*init)(void);
/* Called before finish */
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 32676b3..3c22538 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -127,7 +127,12 @@
* proc_tty.c
*/
struct tty_driver;
+#ifdef CONFIG_TTY
extern void proc_tty_init(void);
+#else
+static inline void proc_tty_init(void)
+{ }
+#endif
extern void proc_tty_register_driver(struct tty_driver *driver);
extern void proc_tty_unregister_driver(struct tty_driver *driver);
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index c490d20..af47a8a 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -59,6 +59,8 @@
PLAT8250_DEV_SM501,
};
+struct uart_8250_dma;
+
/*
* This should be used by drivers which want to register
* their own 8250 ports without registering their own
@@ -91,6 +93,8 @@
#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
unsigned char msr_saved_flags;
+ struct uart_8250_dma *dma;
+
/* 8250 specific callbacks */
int (*dl_read)(struct uart_8250_port *);
void (*dl_write)(struct uart_8250_port *, int);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index c6690a2..82aebc8 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -37,8 +37,8 @@
struct device;
/*
- * This structure describes all the operations that can be
- * done on the physical hardware.
+ * This structure describes all the operations that can be done on the
+ * physical hardware. See Documentation/serial/driver for details.
*/
struct uart_ops {
unsigned int (*tx_empty)(struct uart_port *);
@@ -65,7 +65,7 @@
/*
* Return a string describing the type of the port
*/
- const char *(*type)(struct uart_port *);
+ const char *(*type)(struct uart_port *);
/*
* Release IO and memory resources used by the port.
@@ -83,7 +83,7 @@
int (*ioctl)(struct uart_port *, unsigned int, unsigned long);
#ifdef CONFIG_CONSOLE_POLL
int (*poll_init)(struct uart_port *);
- void (*poll_put_char)(struct uart_port *, unsigned char);
+ void (*poll_put_char)(struct uart_port *, unsigned char);
int (*poll_get_char)(struct uart_port *);
#endif
};
@@ -136,7 +136,6 @@
#define UPIO_MEM32 (3)
#define UPIO_AU (4) /* Au1x00 type IO */
#define UPIO_TSI (5) /* Tsi108/109 type IO */
-#define UPIO_RM9000 (6) /* RM9000 type IO */
unsigned int read_status_mask; /* driver specific */
unsigned int ignore_status_mask; /* driver specific */
@@ -208,13 +207,25 @@
up->serial_out(up, offset, value);
}
+/**
+ * enum uart_pm_state - power states for UARTs
+ * @UART_PM_STATE_ON: UART is powered, up and operational
+ * @UART_PM_STATE_OFF: UART is powered off
+ * @UART_PM_STATE_UNDEFINED: sentinel
+ */
+enum uart_pm_state {
+ UART_PM_STATE_ON = 0,
+ UART_PM_STATE_OFF = 3, /* number taken from ACPI */
+ UART_PM_STATE_UNDEFINED,
+};
+
/*
* This is the state information which is persistent across opens.
*/
struct uart_state {
struct tty_port port;
- int pm_state;
+ enum uart_pm_state pm_state;
struct circ_buf xmit;
struct uart_port *uart_port;
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 8db1b56..c75d886 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -202,7 +202,8 @@
unsigned long iflags; /* TTYP_ internal flags */
#define TTYP_FLUSHING 1 /* Flushing to ldisc in progress */
#define TTYP_FLUSHPENDING 2 /* Queued buffer flush pending */
- unsigned char console:1; /* port is a console */
+ unsigned char console:1, /* port is a console */
+ low_latency:1; /* direct buffer flush */
struct mutex mutex; /* Locking */
struct mutex buf_mutex; /* Buffer alloc lock */
unsigned char *xmit_buf; /* Optional buffer */
@@ -254,7 +255,7 @@
int count;
struct winsize winsize; /* termios mutex */
unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1;
- unsigned char low_latency:1, warned:1;
+ unsigned char warned:1;
unsigned char ctrl_status; /* ctrl_lock */
unsigned int receive_room; /* Bytes free for queue */
@@ -317,11 +318,43 @@
#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
+#ifdef CONFIG_TTY
+extern void console_init(void);
+extern void tty_kref_put(struct tty_struct *tty);
+extern struct pid *tty_get_pgrp(struct tty_struct *tty);
+extern void tty_vhangup_self(void);
+extern void disassociate_ctty(int priv);
+extern dev_t tty_devnum(struct tty_struct *tty);
+extern void proc_clear_tty(struct task_struct *p);
+extern struct tty_struct *get_current_tty(void);
+/* tty_io.c */
+extern int __init tty_init(void);
+#else
+static inline void console_init(void)
+{ }
+static inline void tty_kref_put(struct tty_struct *tty)
+{ }
+static inline struct pid *tty_get_pgrp(struct tty_struct *tty)
+{ return NULL; }
+static inline void tty_vhangup_self(void)
+{ }
+static inline void disassociate_ctty(int priv)
+{ }
+static inline dev_t tty_devnum(struct tty_struct *tty)
+{ return 0; }
+static inline void proc_clear_tty(struct task_struct *p)
+{ }
+static inline struct tty_struct *get_current_tty(void)
+{ return NULL; }
+/* tty_io.c */
+static inline int __init tty_init(void)
+{ return 0; }
+#endif
+
extern void tty_write_flush(struct tty_struct *);
extern struct ktermios tty_std_termios;
-extern void console_init(void);
extern int vcs_init(void);
extern struct class *tty_class;
@@ -341,7 +374,6 @@
kref_get(&tty->kref);
return tty;
}
-extern void tty_kref_put(struct tty_struct *tty);
extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
const char *routine);
@@ -373,20 +405,16 @@
struct tty_struct *tty);
extern void tty_free_termios(struct tty_struct *tty);
extern int is_current_pgrp_orphaned(void);
-extern struct pid *tty_get_pgrp(struct tty_struct *tty);
extern int is_ignored(int sig);
extern int tty_signal(int sig, struct tty_struct *tty);
extern void tty_hangup(struct tty_struct *tty);
extern void tty_vhangup(struct tty_struct *tty);
extern void tty_vhangup_locked(struct tty_struct *tty);
-extern void tty_vhangup_self(void);
extern void tty_unhangup(struct file *filp);
extern int tty_hung_up_p(struct file *filp);
extern void do_SAK(struct tty_struct *tty);
extern void __do_SAK(struct tty_struct *tty);
-extern void disassociate_ctty(int priv);
extern void no_tty(void);
-extern void tty_flip_buffer_push(struct tty_struct *tty);
extern void tty_flush_to_ldisc(struct tty_struct *tty);
extern void tty_buffer_free_all(struct tty_port *port);
extern void tty_buffer_flush(struct tty_struct *tty);
@@ -415,9 +443,6 @@
extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
-extern dev_t tty_devnum(struct tty_struct *tty);
-extern void proc_clear_tty(struct task_struct *p);
-extern struct tty_struct *get_current_tty(void);
extern void tty_default_fops(struct file_operations *fops);
extern struct tty_struct *alloc_tty_struct(void);
extern int tty_alloc_file(struct file *file);
@@ -543,9 +568,6 @@
}
#endif
-/* tty_io.c */
-extern int __init tty_init(void);
-
/* tty_ioctl.c */
extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 2002344..e0f2526 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -1,28 +1,34 @@
#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H
-extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
-extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
-extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
-extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
-extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
-void tty_schedule_flip(struct tty_struct *tty);
+extern int tty_buffer_request_room(struct tty_port *port, size_t size);
+extern int tty_insert_flip_string_flags(struct tty_port *port,
+ const unsigned char *chars, const char *flags, size_t size);
+extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
+ const unsigned char *chars, char flag, size_t size);
+extern int tty_prepare_flip_string(struct tty_port *port,
+ unsigned char **chars, size_t size);
+extern int tty_prepare_flip_string_flags(struct tty_port *port,
+ unsigned char **chars, char **flags, size_t size);
+extern void tty_flip_buffer_push(struct tty_port *port);
+void tty_schedule_flip(struct tty_port *port);
-static inline int tty_insert_flip_char(struct tty_struct *tty,
+static inline int tty_insert_flip_char(struct tty_port *port,
unsigned char ch, char flag)
{
- struct tty_buffer *tb = tty->port->buf.tail;
+ struct tty_buffer *tb = port->buf.tail;
if (tb && tb->used < tb->size) {
tb->flag_buf_ptr[tb->used] = flag;
tb->char_buf_ptr[tb->used++] = ch;
return 1;
}
- return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
+ return tty_insert_flip_string_flags(port, &ch, &flag, 1);
}
-static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
+static inline int tty_insert_flip_string(struct tty_port *port,
+ const unsigned char *chars, size_t size)
{
- return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
+ return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
}
#endif /* _LINUX_TTY_FLIP_H */
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index 2c6c85f..08464ef 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -220,4 +220,7 @@
/* ARC (Synopsys) on-chip UART */
#define PORT_ARC 101
+/* Rocketport EXPRESS/INFINITY */
+#define PORT_RP2 102
+
#endif /* _UAPILINUX_SERIAL_CORE_H */
diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb
index 43cb93f..30894fa 100644
--- a/lib/Kconfig.kgdb
+++ b/lib/Kconfig.kgdb
@@ -22,6 +22,7 @@
tristate "KGDB: use kgdb over the serial console"
select CONSOLE_POLL
select MAGIC_SYSRQ
+ depends on TTY
default y
help
Share a serial console with kgdb. Sysrq-g must be used
diff --git a/net/bluetooth/rfcomm/Kconfig b/net/bluetooth/rfcomm/Kconfig
index 22e718b..18d352e 100644
--- a/net/bluetooth/rfcomm/Kconfig
+++ b/net/bluetooth/rfcomm/Kconfig
@@ -12,6 +12,7 @@
config BT_RFCOMM_TTY
bool "RFCOMM TTY support"
depends on BT_RFCOMM
+ depends on TTY
help
This option enables TTY emulation support for RFCOMM channels.
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index bd6fd0f..b6e44ad 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -541,23 +541,21 @@
static void rfcomm_dev_data_ready(struct rfcomm_dlc *dlc, struct sk_buff *skb)
{
struct rfcomm_dev *dev = dlc->owner;
- struct tty_struct *tty;
if (!dev) {
kfree_skb(skb);
return;
}
- tty = dev->port.tty;
- if (!tty || !skb_queue_empty(&dev->pending)) {
+ if (!skb_queue_empty(&dev->pending)) {
skb_queue_tail(&dev->pending, skb);
return;
}
- BT_DBG("dlc %p tty %p len %d", dlc, tty, skb->len);
+ BT_DBG("dlc %p len %d", dlc, skb->len);
- tty_insert_flip_string(tty, skb->data, skb->len);
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&dev->port, skb->data, skb->len);
+ tty_flip_buffer_push(&dev->port);
kfree_skb(skb);
}
@@ -621,26 +619,23 @@
/* ---- TTY functions ---- */
static void rfcomm_tty_copy_pending(struct rfcomm_dev *dev)
{
- struct tty_struct *tty = dev->port.tty;
struct sk_buff *skb;
int inserted = 0;
- if (!tty)
- return;
-
- BT_DBG("dev %p tty %p", dev, tty);
+ BT_DBG("dev %p", dev);
rfcomm_dlc_lock(dev->dlc);
while ((skb = skb_dequeue(&dev->pending))) {
- inserted += tty_insert_flip_string(tty, skb->data, skb->len);
+ inserted += tty_insert_flip_string(&dev->port, skb->data,
+ skb->len);
kfree_skb(skb);
}
rfcomm_dlc_unlock(dev->dlc);
if (inserted > 0)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&dev->port);
}
static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
diff --git a/net/irda/ircomm/Kconfig b/net/irda/ircomm/Kconfig
index 2d4c6b4..19492c1 100644
--- a/net/irda/ircomm/Kconfig
+++ b/net/irda/ircomm/Kconfig
@@ -1,6 +1,6 @@
config IRCOMM
tristate "IrCOMM protocol"
- depends on IRDA
+ depends on IRDA && TTY
help
Say Y here if you want to build support for the IrCOMM protocol.
To compile it as modules, choose M here: the modules will be
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index a68c88c..9a5fd3c 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -452,7 +452,7 @@
self->line, self->port.count);
/* Not really used by us, but lets do it anyway */
- tty->low_latency = (self->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ self->port.low_latency = (self->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
/*
* If the port is the middle of closing, bail out now
@@ -1136,14 +1136,14 @@
ircomm_tty_send_initial_parameters(self);
ircomm_tty_link_established(self);
}
+ tty_kref_put(tty);
/*
* Use flip buffer functions since the code may be called from interrupt
* context
*/
- tty_insert_flip_string(tty, skb->data, skb->len);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_insert_flip_string(&self->port, skb->data, skb->len);
+ tty_flip_buffer_push(&self->port);
/* No need to kfree_skb - see ircomm_ttp_data_indication() */
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 3a84782..298822c 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -34,7 +34,7 @@
select SND_SOC_CS42L73 if I2C
select SND_SOC_CS4270 if I2C
select SND_SOC_CS4271 if SND_SOC_I2C_AND_SPI
- select SND_SOC_CX20442
+ select SND_SOC_CX20442 if TTY
select SND_SOC_DA7210 if I2C
select SND_SOC_DA732X if I2C
select SND_SOC_DA9055 if I2C
@@ -236,6 +236,7 @@
config SND_SOC_CX20442
tristate
+ depends on TTY
config SND_SOC_JZ4740_CODEC
select REGMAP_MMIO
