media: lirc: implement scancode sending
This introduces a new lirc mode: scancode. Any device which can send raw IR
can now also send scancodes.
int main()
{
int mode, fd = open("/dev/lirc0", O_RDWR);
mode = LIRC_MODE_SCANCODE;
if (ioctl(fd, LIRC_SET_SEND_MODE, &mode)) {
// kernel too old or lirc does not support transmit
}
struct lirc_scancode scancode = {
.scancode = 0x1e3d,
.rc_proto = RC_PROTO_RC5,
};
write(fd, &scancode, sizeof(scancode));
close(fd);
}
The other fields of lirc_scancode must be set to 0.
Note that toggle (rc5, rc6) and repeats (nec) are not implemented. Nor is
there a method for holding down a key for a period.
Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 72197cb..7046734 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -10,59 +10,7 @@
*/
#include <linux/input.h>
-
-/**
- * enum rc_proto - the Remote Controller protocol
- *
- * @RC_PROTO_UNKNOWN: Protocol not known
- * @RC_PROTO_OTHER: Protocol known but proprietary
- * @RC_PROTO_RC5: Philips RC5 protocol
- * @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
- * @RC_PROTO_RC5_SZ: StreamZap variant of RC5
- * @RC_PROTO_JVC: JVC protocol
- * @RC_PROTO_SONY12: Sony 12 bit protocol
- * @RC_PROTO_SONY15: Sony 15 bit protocol
- * @RC_PROTO_SONY20: Sony 20 bit protocol
- * @RC_PROTO_NEC: NEC protocol
- * @RC_PROTO_NECX: Extended NEC protocol
- * @RC_PROTO_NEC32: NEC 32 bit protocol
- * @RC_PROTO_SANYO: Sanyo protocol
- * @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
- * @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
- * @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
- * @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
- * @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
- * @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
- * @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
- * @RC_PROTO_SHARP: Sharp protocol
- * @RC_PROTO_XMP: XMP protocol
- * @RC_PROTO_CEC: CEC protocol
- */
-enum rc_proto {
- RC_PROTO_UNKNOWN = 0,
- RC_PROTO_OTHER = 1,
- RC_PROTO_RC5 = 2,
- RC_PROTO_RC5X_20 = 3,
- RC_PROTO_RC5_SZ = 4,
- RC_PROTO_JVC = 5,
- RC_PROTO_SONY12 = 6,
- RC_PROTO_SONY15 = 7,
- RC_PROTO_SONY20 = 8,
- RC_PROTO_NEC = 9,
- RC_PROTO_NECX = 10,
- RC_PROTO_NEC32 = 11,
- RC_PROTO_SANYO = 12,
- RC_PROTO_MCIR2_KBD = 13,
- RC_PROTO_MCIR2_MSE = 14,
- RC_PROTO_RC6_0 = 15,
- RC_PROTO_RC6_6A_20 = 16,
- RC_PROTO_RC6_6A_24 = 17,
- RC_PROTO_RC6_6A_32 = 18,
- RC_PROTO_RC6_MCE = 19,
- RC_PROTO_SHARP = 20,
- RC_PROTO_XMP = 21,
- RC_PROTO_CEC = 22,
-};
+#include <uapi/linux/lirc.h>
#define RC_PROTO_BIT_NONE 0ULL
#define RC_PROTO_BIT_UNKNOWN BIT_ULL(RC_PROTO_UNKNOWN)
diff --git a/include/uapi/linux/lirc.h b/include/uapi/linux/lirc.h
index c3aef431..4fe580d 100644
--- a/include/uapi/linux/lirc.h
+++ b/include/uapi/linux/lirc.h
@@ -47,12 +47,14 @@
#define LIRC_MODE_RAW 0x00000001
#define LIRC_MODE_PULSE 0x00000002
#define LIRC_MODE_MODE2 0x00000004
+#define LIRC_MODE_SCANCODE 0x00000008
#define LIRC_MODE_LIRCCODE 0x00000010
#define LIRC_CAN_SEND_RAW LIRC_MODE2SEND(LIRC_MODE_RAW)
#define LIRC_CAN_SEND_PULSE LIRC_MODE2SEND(LIRC_MODE_PULSE)
#define LIRC_CAN_SEND_MODE2 LIRC_MODE2SEND(LIRC_MODE_MODE2)
+#define LIRC_CAN_SEND_SCANCODE LIRC_MODE2SEND(LIRC_MODE_SCANCODE)
#define LIRC_CAN_SEND_LIRCCODE LIRC_MODE2SEND(LIRC_MODE_LIRCCODE)
#define LIRC_CAN_SEND_MASK 0x0000003f
@@ -64,6 +66,7 @@
#define LIRC_CAN_REC_RAW LIRC_MODE2REC(LIRC_MODE_RAW)
#define LIRC_CAN_REC_PULSE LIRC_MODE2REC(LIRC_MODE_PULSE)
#define LIRC_CAN_REC_MODE2 LIRC_MODE2REC(LIRC_MODE_MODE2)
+#define LIRC_CAN_REC_SCANCODE LIRC_MODE2REC(LIRC_MODE_SCANCODE)
#define LIRC_CAN_REC_LIRCCODE LIRC_MODE2REC(LIRC_MODE_LIRCCODE)
#define LIRC_CAN_REC_MASK LIRC_MODE2REC(LIRC_CAN_SEND_MASK)
@@ -131,4 +134,83 @@
#define LIRC_SET_WIDEBAND_RECEIVER _IOW('i', 0x00000023, __u32)
+/*
+ * struct lirc_scancode - decoded scancode with protocol for use with
+ * LIRC_MODE_SCANCODE
+ *
+ * @timestamp: Timestamp in nanoseconds using CLOCK_MONOTONIC when IR
+ * was decoded.
+ * @flags: should be 0 for transmit. When receiving scancodes,
+ * LIRC_SCANCODE_FLAG_TOGGLE or LIRC_SCANCODE_FLAG_REPEAT can be set
+ * depending on the protocol
+ * @rc_proto: see enum rc_proto
+ * @keycode: the translated keycode. Set to 0 for transmit.
+ * @scancode: the scancode received or to be sent
+ */
+struct lirc_scancode {
+ __u64 timestamp;
+ __u16 flags;
+ __u16 rc_proto;
+ __u32 keycode;
+ __u64 scancode;
+};
+
+/* Set if the toggle bit of rc-5 or rc-6 is enabled */
+#define LIRC_SCANCODE_FLAG_TOGGLE 1
+/* Set if this is a nec or sanyo repeat */
+#define LIRC_SCANCODE_FLAG_REPEAT 2
+
+/**
+ * enum rc_proto - the Remote Controller protocol
+ *
+ * @RC_PROTO_UNKNOWN: Protocol not known
+ * @RC_PROTO_OTHER: Protocol known but proprietary
+ * @RC_PROTO_RC5: Philips RC5 protocol
+ * @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
+ * @RC_PROTO_RC5_SZ: StreamZap variant of RC5
+ * @RC_PROTO_JVC: JVC protocol
+ * @RC_PROTO_SONY12: Sony 12 bit protocol
+ * @RC_PROTO_SONY15: Sony 15 bit protocol
+ * @RC_PROTO_SONY20: Sony 20 bit protocol
+ * @RC_PROTO_NEC: NEC protocol
+ * @RC_PROTO_NECX: Extended NEC protocol
+ * @RC_PROTO_NEC32: NEC 32 bit protocol
+ * @RC_PROTO_SANYO: Sanyo protocol
+ * @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
+ * @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
+ * @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
+ * @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
+ * @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
+ * @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
+ * @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
+ * @RC_PROTO_SHARP: Sharp protocol
+ * @RC_PROTO_XMP: XMP protocol
+ * @RC_PROTO_CEC: CEC protocol
+ */
+enum rc_proto {
+ RC_PROTO_UNKNOWN = 0,
+ RC_PROTO_OTHER = 1,
+ RC_PROTO_RC5 = 2,
+ RC_PROTO_RC5X_20 = 3,
+ RC_PROTO_RC5_SZ = 4,
+ RC_PROTO_JVC = 5,
+ RC_PROTO_SONY12 = 6,
+ RC_PROTO_SONY15 = 7,
+ RC_PROTO_SONY20 = 8,
+ RC_PROTO_NEC = 9,
+ RC_PROTO_NECX = 10,
+ RC_PROTO_NEC32 = 11,
+ RC_PROTO_SANYO = 12,
+ RC_PROTO_MCIR2_KBD = 13,
+ RC_PROTO_MCIR2_MSE = 14,
+ RC_PROTO_RC6_0 = 15,
+ RC_PROTO_RC6_6A_20 = 16,
+ RC_PROTO_RC6_6A_24 = 17,
+ RC_PROTO_RC6_6A_32 = 18,
+ RC_PROTO_RC6_MCE = 19,
+ RC_PROTO_SHARP = 20,
+ RC_PROTO_XMP = 21,
+ RC_PROTO_CEC = 22,
+};
+
#endif
