| /* |
| * pc87427.c - hardware monitoring driver for the |
| * National Semiconductor PC87427 Super-I/O chip |
| * Copyright (C) 2006, 2008, 2010 Jean Delvare <[email protected]> |
| * |
| * 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. |
| * |
| * 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. |
| * |
| * Supports the following chips: |
| * |
| * Chip #vin #fan #pwm #temp devid |
| * PC87427 - 8 4 6 0xF2 |
| * |
| * This driver assumes that no more than one chip is present. |
| * Only fans are fully supported so far. Temperatures are in read-only |
| * mode, and voltages aren't supported at all. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/platform_device.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| #include <linux/sysfs.h> |
| #include <linux/ioport.h> |
| #include <linux/acpi.h> |
| #include <linux/io.h> |
| |
| static unsigned short force_id; |
| module_param(force_id, ushort, 0); |
| MODULE_PARM_DESC(force_id, "Override the detected device ID"); |
| |
| static struct platform_device *pdev; |
| |
| #define DRVNAME "pc87427" |
| |
| /* |
| * The lock mutex protects both the I/O accesses (needed because the |
| * device is using banked registers) and the register cache (needed to keep |
| * the data in the registers and the cache in sync at any time). |
| */ |
| struct pc87427_data { |
| struct device *hwmon_dev; |
| struct mutex lock; |
| int address[2]; |
| const char *name; |
| |
| unsigned long last_updated; /* in jiffies */ |
| u8 fan_enabled; /* bit vector */ |
| u16 fan[8]; /* register values */ |
| u16 fan_min[8]; /* register values */ |
| u8 fan_status[8]; /* register values */ |
| |
| u8 pwm_enabled; /* bit vector */ |
| u8 pwm_auto_ok; /* bit vector */ |
| u8 pwm_enable[4]; /* register values */ |
| u8 pwm[4]; /* register values */ |
| |
| u8 temp_enabled; /* bit vector */ |
| s16 temp[6]; /* register values */ |
| s8 temp_min[6]; /* register values */ |
| s8 temp_max[6]; /* register values */ |
| s8 temp_crit[6]; /* register values */ |
| u8 temp_status[6]; /* register values */ |
| u8 temp_type[6]; /* register values */ |
| }; |
| |
| struct pc87427_sio_data { |
| unsigned short address[2]; |
| u8 has_fanin; |
| u8 has_fanout; |
| }; |
| |
| /* |
| * Super-I/O registers and operations |
| */ |
| |
| #define SIOREG_LDSEL 0x07 /* Logical device select */ |
| #define SIOREG_DEVID 0x20 /* Device ID */ |
| #define SIOREG_CF2 0x22 /* Configuration 2 */ |
| #define SIOREG_CF3 0x23 /* Configuration 3 */ |
| #define SIOREG_CF4 0x24 /* Configuration 4 */ |
| #define SIOREG_CF5 0x25 /* Configuration 5 */ |
| #define SIOREG_CFB 0x2B /* Configuration B */ |
| #define SIOREG_CFC 0x2C /* Configuration C */ |
| #define SIOREG_CFD 0x2D /* Configuration D */ |
| #define SIOREG_ACT 0x30 /* Device activation */ |
| #define SIOREG_MAP 0x50 /* I/O or memory mapping */ |
| #define SIOREG_IOBASE 0x60 /* I/O base address */ |
| |
| static const u8 logdev[2] = { 0x09, 0x14 }; |
| static const char *logdev_str[2] = { DRVNAME " FMC", DRVNAME " HMC" }; |
| #define LD_FAN 0 |
| #define LD_IN 1 |
| #define LD_TEMP 1 |
| |
| static inline void superio_outb(int sioaddr, int reg, int val) |
| { |
| outb(reg, sioaddr); |
| outb(val, sioaddr + 1); |
| } |
| |
| static inline int superio_inb(int sioaddr, int reg) |
| { |
| outb(reg, sioaddr); |
| return inb(sioaddr + 1); |
| } |
| |
| static inline void superio_exit(int sioaddr) |
| { |
| outb(0x02, sioaddr); |
| outb(0x02, sioaddr + 1); |
| } |
| |
| /* |
| * Logical devices |
| */ |
| |
| #define REGION_LENGTH 32 |
| #define PC87427_REG_BANK 0x0f |
| #define BANK_FM(nr) (nr) |
| #define BANK_FT(nr) (0x08 + (nr)) |
| #define BANK_FC(nr) (0x10 + (nr) * 2) |
| #define BANK_TM(nr) (nr) |
| #define BANK_VM(nr) (0x08 + (nr)) |
| |
| /* |
| * I/O access functions |
| */ |
| |
| /* ldi is the logical device index */ |
| static inline int pc87427_read8(struct pc87427_data *data, u8 ldi, u8 reg) |
| { |
| return inb(data->address[ldi] + reg); |
| } |
| |
| /* Must be called with data->lock held, except during init */ |
| static inline int pc87427_read8_bank(struct pc87427_data *data, u8 ldi, |
| u8 bank, u8 reg) |
| { |
| outb(bank, data->address[ldi] + PC87427_REG_BANK); |
| return inb(data->address[ldi] + reg); |
| } |
| |
| /* Must be called with data->lock held, except during init */ |
| static inline void pc87427_write8_bank(struct pc87427_data *data, u8 ldi, |
| u8 bank, u8 reg, u8 value) |
| { |
| outb(bank, data->address[ldi] + PC87427_REG_BANK); |
| outb(value, data->address[ldi] + reg); |
| } |
| |
| /* |
| * Fan registers and conversions |
| */ |
| |
| /* fan data registers are 16-bit wide */ |
| #define PC87427_REG_FAN 0x12 |
| #define PC87427_REG_FAN_MIN 0x14 |
| #define PC87427_REG_FAN_STATUS 0x10 |
| |
| #define FAN_STATUS_STALL (1 << 3) |
| #define FAN_STATUS_LOSPD (1 << 1) |
| #define FAN_STATUS_MONEN (1 << 0) |
| |
| /* |
| * Dedicated function to read all registers related to a given fan input. |
| * This saves us quite a few locks and bank selections. |
| * Must be called with data->lock held. |
| * nr is from 0 to 7 |
| */ |
| static void pc87427_readall_fan(struct pc87427_data *data, u8 nr) |
| { |
| int iobase = data->address[LD_FAN]; |
| |
| outb(BANK_FM(nr), iobase + PC87427_REG_BANK); |
| data->fan[nr] = inw(iobase + PC87427_REG_FAN); |
| data->fan_min[nr] = inw(iobase + PC87427_REG_FAN_MIN); |
| data->fan_status[nr] = inb(iobase + PC87427_REG_FAN_STATUS); |
| /* Clear fan alarm bits */ |
| outb(data->fan_status[nr], iobase + PC87427_REG_FAN_STATUS); |
| } |
| |
| /* |
| * The 2 LSB of fan speed registers are used for something different. |
| * The actual 2 LSB of the measurements are not available. |
| */ |
| static inline unsigned long fan_from_reg(u16 reg) |
| { |
| reg &= 0xfffc; |
| if (reg == 0x0000 || reg == 0xfffc) |
| return 0; |
| return 5400000UL / reg; |
| } |
| |
| /* The 2 LSB of the fan speed limit registers are not significant. */ |
| static inline u16 fan_to_reg(unsigned long val) |
| { |
| if (val < 83UL) |
| return 0xffff; |
| if (val >= 1350000UL) |
| return 0x0004; |
| return ((1350000UL + val / 2) / val) << 2; |
| } |
| |
| /* |
| * PWM registers and conversions |
| */ |
| |
| #define PC87427_REG_PWM_ENABLE 0x10 |
| #define PC87427_REG_PWM_DUTY 0x12 |
| |
| #define PWM_ENABLE_MODE_MASK (7 << 4) |
| #define PWM_ENABLE_CTLEN (1 << 0) |
| |
| #define PWM_MODE_MANUAL (0 << 4) |
| #define PWM_MODE_AUTO (1 << 4) |
| #define PWM_MODE_OFF (2 << 4) |
| #define PWM_MODE_ON (7 << 4) |
| |
| /* |
| * Dedicated function to read all registers related to a given PWM output. |
| * This saves us quite a few locks and bank selections. |
| * Must be called with data->lock held. |
| * nr is from 0 to 3 |
| */ |
| static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr) |
| { |
| int iobase = data->address[LD_FAN]; |
| |
| outb(BANK_FC(nr), iobase + PC87427_REG_BANK); |
| data->pwm_enable[nr] = inb(iobase + PC87427_REG_PWM_ENABLE); |
| data->pwm[nr] = inb(iobase + PC87427_REG_PWM_DUTY); |
| } |
| |
| static inline int pwm_enable_from_reg(u8 reg) |
| { |
| switch (reg & PWM_ENABLE_MODE_MASK) { |
| case PWM_MODE_ON: |
| return 0; |
| case PWM_MODE_MANUAL: |
| case PWM_MODE_OFF: |
| return 1; |
| case PWM_MODE_AUTO: |
| return 2; |
| default: |
| return -EPROTO; |
| } |
| } |
| |
| static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval) |
| { |
| switch (val) { |
| default: |
| return PWM_MODE_ON; |
| case 1: |
| return pwmval ? PWM_MODE_MANUAL : PWM_MODE_OFF; |
| case 2: |
| return PWM_MODE_AUTO; |
| } |
| } |
| |
| /* |
| * Temperature registers and conversions |
| */ |
| |
| #define PC87427_REG_TEMP_STATUS 0x10 |
| #define PC87427_REG_TEMP 0x14 |
| #define PC87427_REG_TEMP_MAX 0x18 |
| #define PC87427_REG_TEMP_MIN 0x19 |
| #define PC87427_REG_TEMP_CRIT 0x1a |
| #define PC87427_REG_TEMP_TYPE 0x1d |
| |
| #define TEMP_STATUS_CHANEN (1 << 0) |
| #define TEMP_STATUS_LOWFLG (1 << 1) |
| #define TEMP_STATUS_HIGHFLG (1 << 2) |
| #define TEMP_STATUS_CRITFLG (1 << 3) |
| #define TEMP_STATUS_SENSERR (1 << 5) |
| #define TEMP_TYPE_MASK (3 << 5) |
| |
| #define TEMP_TYPE_THERMISTOR (1 << 5) |
| #define TEMP_TYPE_REMOTE_DIODE (2 << 5) |
| #define TEMP_TYPE_LOCAL_DIODE (3 << 5) |
| |
| /* |
| * Dedicated function to read all registers related to a given temperature |
| * input. This saves us quite a few locks and bank selections. |
| * Must be called with data->lock held. |
| * nr is from 0 to 5 |
| */ |
| static void pc87427_readall_temp(struct pc87427_data *data, u8 nr) |
| { |
| int iobase = data->address[LD_TEMP]; |
| |
| outb(BANK_TM(nr), iobase + PC87427_REG_BANK); |
| data->temp[nr] = le16_to_cpu(inw(iobase + PC87427_REG_TEMP)); |
| data->temp_max[nr] = inb(iobase + PC87427_REG_TEMP_MAX); |
| data->temp_min[nr] = inb(iobase + PC87427_REG_TEMP_MIN); |
| data->temp_crit[nr] = inb(iobase + PC87427_REG_TEMP_CRIT); |
| data->temp_type[nr] = inb(iobase + PC87427_REG_TEMP_TYPE); |
| data->temp_status[nr] = inb(iobase + PC87427_REG_TEMP_STATUS); |
| /* Clear fan alarm bits */ |
| outb(data->temp_status[nr], iobase + PC87427_REG_TEMP_STATUS); |
| } |
| |
| static inline unsigned int temp_type_from_reg(u8 reg) |
| { |
| switch (reg & TEMP_TYPE_MASK) { |
| case TEMP_TYPE_THERMISTOR: |
| return 4; |
| case TEMP_TYPE_REMOTE_DIODE: |
| case TEMP_TYPE_LOCAL_DIODE: |
| return 3; |
| default: |
| return 0; |
| } |
| } |
| |
| /* |
| * We assume 8-bit thermal sensors; 9-bit thermal sensors are possible |
| * too, but I have no idea how to figure out when they are used. |
| */ |
| static inline long temp_from_reg(s16 reg) |
| { |
| return reg * 1000 / 256; |
| } |
| |
| static inline long temp_from_reg8(s8 reg) |
| { |
| return reg * 1000; |
| } |
| |
| /* |
| * Data interface |
| */ |
| |
| static struct pc87427_data *pc87427_update_device(struct device *dev) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int i; |
| |
| mutex_lock(&data->lock); |
| if (!time_after(jiffies, data->last_updated + HZ) |
| && data->last_updated) |
| goto done; |
| |
| /* Fans */ |
| for (i = 0; i < 8; i++) { |
| if (!(data->fan_enabled & (1 << i))) |
| continue; |
| pc87427_readall_fan(data, i); |
| } |
| |
| /* PWM outputs */ |
| for (i = 0; i < 4; i++) { |
| if (!(data->pwm_enabled & (1 << i))) |
| continue; |
| pc87427_readall_pwm(data, i); |
| } |
| |
| /* Temperature channels */ |
| for (i = 0; i < 6; i++) { |
| if (!(data->temp_enabled & (1 << i))) |
| continue; |
| pc87427_readall_temp(data, i); |
| } |
| |
| data->last_updated = jiffies; |
| |
| done: |
| mutex_unlock(&data->lock); |
| return data; |
| } |
| |
| static ssize_t show_fan_input(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%lu\n", fan_from_reg(data->fan[nr])); |
| } |
| |
| static ssize_t show_fan_min(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%lu\n", fan_from_reg(data->fan_min[nr])); |
| } |
| |
| static ssize_t show_fan_alarm(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->fan_status[nr] |
| & FAN_STATUS_LOSPD)); |
| } |
| |
| static ssize_t show_fan_fault(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->fan_status[nr] |
| & FAN_STATUS_STALL)); |
| } |
| |
| static ssize_t set_fan_min(struct device *dev, struct device_attribute |
| *devattr, const char *buf, size_t count) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| unsigned long val; |
| int iobase = data->address[LD_FAN]; |
| |
| if (kstrtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->lock); |
| outb(BANK_FM(nr), iobase + PC87427_REG_BANK); |
| /* |
| * The low speed limit registers are read-only while monitoring |
| * is enabled, so we have to disable monitoring, then change the |
| * limit, and finally enable monitoring again. |
| */ |
| outb(0, iobase + PC87427_REG_FAN_STATUS); |
| data->fan_min[nr] = fan_to_reg(val); |
| outw(data->fan_min[nr], iobase + PC87427_REG_FAN_MIN); |
| outb(FAN_STATUS_MONEN, iobase + PC87427_REG_FAN_STATUS); |
| mutex_unlock(&data->lock); |
| |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_input, NULL, 3); |
| static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_input, NULL, 4); |
| static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_input, NULL, 5); |
| static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_input, NULL, 6); |
| static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_input, NULL, 7); |
| |
| static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 0); |
| static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 1); |
| static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 2); |
| static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 3); |
| static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 4); |
| static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 5); |
| static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 6); |
| static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, |
| show_fan_min, set_fan_min, 7); |
| |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_fan_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_fan_alarm, NULL, 5); |
| static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_fan_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_fan_alarm, NULL, 7); |
| |
| static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); |
| static SENSOR_DEVICE_ATTR(fan5_fault, S_IRUGO, show_fan_fault, NULL, 4); |
| static SENSOR_DEVICE_ATTR(fan6_fault, S_IRUGO, show_fan_fault, NULL, 5); |
| static SENSOR_DEVICE_ATTR(fan7_fault, S_IRUGO, show_fan_fault, NULL, 6); |
| static SENSOR_DEVICE_ATTR(fan8_fault, S_IRUGO, show_fan_fault, NULL, 7); |
| |
| static struct attribute *pc87427_attributes_fan[8][5] = { |
| { |
| &sensor_dev_attr_fan1_input.dev_attr.attr, |
| &sensor_dev_attr_fan1_min.dev_attr.attr, |
| &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan1_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan2_input.dev_attr.attr, |
| &sensor_dev_attr_fan2_min.dev_attr.attr, |
| &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan2_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan3_input.dev_attr.attr, |
| &sensor_dev_attr_fan3_min.dev_attr.attr, |
| &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan3_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan4_input.dev_attr.attr, |
| &sensor_dev_attr_fan4_min.dev_attr.attr, |
| &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan4_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan5_input.dev_attr.attr, |
| &sensor_dev_attr_fan5_min.dev_attr.attr, |
| &sensor_dev_attr_fan5_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan5_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan6_input.dev_attr.attr, |
| &sensor_dev_attr_fan6_min.dev_attr.attr, |
| &sensor_dev_attr_fan6_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan6_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan7_input.dev_attr.attr, |
| &sensor_dev_attr_fan7_min.dev_attr.attr, |
| &sensor_dev_attr_fan7_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan7_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan8_input.dev_attr.attr, |
| &sensor_dev_attr_fan8_min.dev_attr.attr, |
| &sensor_dev_attr_fan8_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan8_fault.dev_attr.attr, |
| NULL |
| } |
| }; |
| |
| static const struct attribute_group pc87427_group_fan[8] = { |
| { .attrs = pc87427_attributes_fan[0] }, |
| { .attrs = pc87427_attributes_fan[1] }, |
| { .attrs = pc87427_attributes_fan[2] }, |
| { .attrs = pc87427_attributes_fan[3] }, |
| { .attrs = pc87427_attributes_fan[4] }, |
| { .attrs = pc87427_attributes_fan[5] }, |
| { .attrs = pc87427_attributes_fan[6] }, |
| { .attrs = pc87427_attributes_fan[7] }, |
| }; |
| |
| /* |
| * Must be called with data->lock held and pc87427_readall_pwm() freshly |
| * called |
| */ |
| static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode) |
| { |
| int iobase = data->address[LD_FAN]; |
| data->pwm_enable[nr] &= ~PWM_ENABLE_MODE_MASK; |
| data->pwm_enable[nr] |= mode; |
| outb(data->pwm_enable[nr], iobase + PC87427_REG_PWM_ENABLE); |
| } |
| |
| static ssize_t show_pwm_enable(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| int pwm_enable; |
| |
| pwm_enable = pwm_enable_from_reg(data->pwm_enable[nr]); |
| if (pwm_enable < 0) |
| return pwm_enable; |
| return sprintf(buf, "%d\n", pwm_enable); |
| } |
| |
| static ssize_t set_pwm_enable(struct device *dev, struct device_attribute |
| *devattr, const char *buf, size_t count) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| unsigned long val; |
| |
| if (kstrtoul(buf, 10, &val) < 0 || val > 2) |
| return -EINVAL; |
| /* Can't go to automatic mode if it isn't configured */ |
| if (val == 2 && !(data->pwm_auto_ok & (1 << nr))) |
| return -EINVAL; |
| |
| mutex_lock(&data->lock); |
| pc87427_readall_pwm(data, nr); |
| update_pwm_enable(data, nr, pwm_enable_to_reg(val, data->pwm[nr])); |
| mutex_unlock(&data->lock); |
| |
| return count; |
| } |
| |
| static ssize_t show_pwm(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", (int)data->pwm[nr]); |
| } |
| |
| static ssize_t set_pwm(struct device *dev, struct device_attribute |
| *devattr, const char *buf, size_t count) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| unsigned long val; |
| int iobase = data->address[LD_FAN]; |
| u8 mode; |
| |
| if (kstrtoul(buf, 10, &val) < 0 || val > 0xff) |
| return -EINVAL; |
| |
| mutex_lock(&data->lock); |
| pc87427_readall_pwm(data, nr); |
| mode = data->pwm_enable[nr] & PWM_ENABLE_MODE_MASK; |
| if (mode != PWM_MODE_MANUAL && mode != PWM_MODE_OFF) { |
| dev_notice(dev, |
| "Can't set PWM%d duty cycle while not in manual mode\n", |
| nr + 1); |
| mutex_unlock(&data->lock); |
| return -EPERM; |
| } |
| |
| /* We may have to change the mode */ |
| if (mode == PWM_MODE_MANUAL && val == 0) { |
| /* Transition from Manual to Off */ |
| update_pwm_enable(data, nr, PWM_MODE_OFF); |
| mode = PWM_MODE_OFF; |
| dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, |
| "manual", "off"); |
| } else if (mode == PWM_MODE_OFF && val != 0) { |
| /* Transition from Off to Manual */ |
| update_pwm_enable(data, nr, PWM_MODE_MANUAL); |
| mode = PWM_MODE_MANUAL; |
| dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, |
| "off", "manual"); |
| } |
| |
| data->pwm[nr] = val; |
| if (mode == PWM_MODE_MANUAL) |
| outb(val, iobase + PC87427_REG_PWM_DUTY); |
| mutex_unlock(&data->lock); |
| |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
| show_pwm_enable, set_pwm_enable, 0); |
| static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, |
| show_pwm_enable, set_pwm_enable, 1); |
| static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, |
| show_pwm_enable, set_pwm_enable, 2); |
| static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, |
| show_pwm_enable, set_pwm_enable, 3); |
| |
| static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); |
| static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); |
| static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2); |
| static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3); |
| |
| static struct attribute *pc87427_attributes_pwm[4][3] = { |
| { |
| &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm1.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm2.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm3.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm4_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm4.dev_attr.attr, |
| NULL |
| } |
| }; |
| |
| static const struct attribute_group pc87427_group_pwm[4] = { |
| { .attrs = pc87427_attributes_pwm[0] }, |
| { .attrs = pc87427_attributes_pwm[1] }, |
| { .attrs = pc87427_attributes_pwm[2] }, |
| { .attrs = pc87427_attributes_pwm[3] }, |
| }; |
| |
| static ssize_t show_temp_input(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr])); |
| } |
| |
| static ssize_t show_temp_min(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_min[nr])); |
| } |
| |
| static ssize_t show_temp_max(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_max[nr])); |
| } |
| |
| static ssize_t show_temp_crit(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_crit[nr])); |
| } |
| |
| static ssize_t show_temp_type(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%u\n", temp_type_from_reg(data->temp_type[nr])); |
| } |
| |
| static ssize_t show_temp_min_alarm(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->temp_status[nr] |
| & TEMP_STATUS_LOWFLG)); |
| } |
| |
| static ssize_t show_temp_max_alarm(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->temp_status[nr] |
| & TEMP_STATUS_HIGHFLG)); |
| } |
| |
| static ssize_t show_temp_crit_alarm(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->temp_status[nr] |
| & TEMP_STATUS_CRITFLG)); |
| } |
| |
| static ssize_t show_temp_fault(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = pc87427_update_device(dev); |
| int nr = to_sensor_dev_attr(devattr)->index; |
| |
| return sprintf(buf, "%d\n", !!(data->temp_status[nr] |
| & TEMP_STATUS_SENSERR)); |
| } |
| |
| static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_input, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_input, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp_min, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp_min, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp_min, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO, show_temp_min, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_min, S_IRUGO, show_temp_min, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_min, S_IRUGO, show_temp_min, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_type, S_IRUGO, show_temp_type, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_type, S_IRUGO, show_temp_type, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_type, S_IRUGO, show_temp_type, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_min_alarm, S_IRUGO, |
| show_temp_min_alarm, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_max_alarm, S_IRUGO, |
| show_temp_max_alarm, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_crit_alarm, S_IRUGO, |
| show_temp_crit_alarm, NULL, 5); |
| |
| static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); |
| |
| static struct attribute *pc87427_attributes_temp[6][10] = { |
| { |
| &sensor_dev_attr_temp1_input.dev_attr.attr, |
| &sensor_dev_attr_temp1_min.dev_attr.attr, |
| &sensor_dev_attr_temp1_max.dev_attr.attr, |
| &sensor_dev_attr_temp1_crit.dev_attr.attr, |
| &sensor_dev_attr_temp1_type.dev_attr.attr, |
| &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp1_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp2_input.dev_attr.attr, |
| &sensor_dev_attr_temp2_min.dev_attr.attr, |
| &sensor_dev_attr_temp2_max.dev_attr.attr, |
| &sensor_dev_attr_temp2_crit.dev_attr.attr, |
| &sensor_dev_attr_temp2_type.dev_attr.attr, |
| &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp2_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp3_input.dev_attr.attr, |
| &sensor_dev_attr_temp3_min.dev_attr.attr, |
| &sensor_dev_attr_temp3_max.dev_attr.attr, |
| &sensor_dev_attr_temp3_crit.dev_attr.attr, |
| &sensor_dev_attr_temp3_type.dev_attr.attr, |
| &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp3_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp4_input.dev_attr.attr, |
| &sensor_dev_attr_temp4_min.dev_attr.attr, |
| &sensor_dev_attr_temp4_max.dev_attr.attr, |
| &sensor_dev_attr_temp4_crit.dev_attr.attr, |
| &sensor_dev_attr_temp4_type.dev_attr.attr, |
| &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp4_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp5_input.dev_attr.attr, |
| &sensor_dev_attr_temp5_min.dev_attr.attr, |
| &sensor_dev_attr_temp5_max.dev_attr.attr, |
| &sensor_dev_attr_temp5_crit.dev_attr.attr, |
| &sensor_dev_attr_temp5_type.dev_attr.attr, |
| &sensor_dev_attr_temp5_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp5_fault.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp6_input.dev_attr.attr, |
| &sensor_dev_attr_temp6_min.dev_attr.attr, |
| &sensor_dev_attr_temp6_max.dev_attr.attr, |
| &sensor_dev_attr_temp6_crit.dev_attr.attr, |
| &sensor_dev_attr_temp6_type.dev_attr.attr, |
| &sensor_dev_attr_temp6_min_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp6_max_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp6_crit_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp6_fault.dev_attr.attr, |
| NULL |
| } |
| }; |
| |
| static const struct attribute_group pc87427_group_temp[6] = { |
| { .attrs = pc87427_attributes_temp[0] }, |
| { .attrs = pc87427_attributes_temp[1] }, |
| { .attrs = pc87427_attributes_temp[2] }, |
| { .attrs = pc87427_attributes_temp[3] }, |
| { .attrs = pc87427_attributes_temp[4] }, |
| { .attrs = pc87427_attributes_temp[5] }, |
| }; |
| |
| static ssize_t show_name(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| |
| return sprintf(buf, "%s\n", data->name); |
| } |
| static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| |
| |
| /* |
| * Device detection, attach and detach |
| */ |
| |
| static int pc87427_request_regions(struct platform_device *pdev, |
| int count) |
| { |
| struct resource *res; |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| res = platform_get_resource(pdev, IORESOURCE_IO, i); |
| if (!res) { |
| dev_err(&pdev->dev, "Missing resource #%d\n", i); |
| return -ENOENT; |
| } |
| if (!devm_request_region(&pdev->dev, res->start, |
| resource_size(res), DRVNAME)) { |
| dev_err(&pdev->dev, |
| "Failed to request region 0x%lx-0x%lx\n", |
| (unsigned long)res->start, |
| (unsigned long)res->end); |
| return -EBUSY; |
| } |
| } |
| return 0; |
| } |
| |
| static void pc87427_init_device(struct device *dev) |
| { |
| struct pc87427_sio_data *sio_data = dev_get_platdata(dev); |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int i; |
| u8 reg; |
| |
| /* The FMC module should be ready */ |
| reg = pc87427_read8(data, LD_FAN, PC87427_REG_BANK); |
| if (!(reg & 0x80)) |
| dev_warn(dev, "%s module not ready!\n", "FMC"); |
| |
| /* Check which fans are enabled */ |
| for (i = 0; i < 8; i++) { |
| if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ |
| continue; |
| reg = pc87427_read8_bank(data, LD_FAN, BANK_FM(i), |
| PC87427_REG_FAN_STATUS); |
| if (reg & FAN_STATUS_MONEN) |
| data->fan_enabled |= (1 << i); |
| } |
| |
| if (!data->fan_enabled) { |
| dev_dbg(dev, "Enabling monitoring of all fans\n"); |
| for (i = 0; i < 8; i++) { |
| if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ |
| continue; |
| pc87427_write8_bank(data, LD_FAN, BANK_FM(i), |
| PC87427_REG_FAN_STATUS, |
| FAN_STATUS_MONEN); |
| } |
| data->fan_enabled = sio_data->has_fanin; |
| } |
| |
| /* Check which PWM outputs are enabled */ |
| for (i = 0; i < 4; i++) { |
| if (!(sio_data->has_fanout & (1 << i))) /* Not wired */ |
| continue; |
| reg = pc87427_read8_bank(data, LD_FAN, BANK_FC(i), |
| PC87427_REG_PWM_ENABLE); |
| if (reg & PWM_ENABLE_CTLEN) |
| data->pwm_enabled |= (1 << i); |
| |
| /* |
| * We don't expose an interface to reconfigure the automatic |
| * fan control mode, so only allow to return to this mode if |
| * it was originally set. |
| */ |
| if ((reg & PWM_ENABLE_MODE_MASK) == PWM_MODE_AUTO) { |
| dev_dbg(dev, "PWM%d is in automatic control mode\n", |
| i + 1); |
| data->pwm_auto_ok |= (1 << i); |
| } |
| } |
| |
| /* The HMC module should be ready */ |
| reg = pc87427_read8(data, LD_TEMP, PC87427_REG_BANK); |
| if (!(reg & 0x80)) |
| dev_warn(dev, "%s module not ready!\n", "HMC"); |
| |
| /* Check which temperature channels are enabled */ |
| for (i = 0; i < 6; i++) { |
| reg = pc87427_read8_bank(data, LD_TEMP, BANK_TM(i), |
| PC87427_REG_TEMP_STATUS); |
| if (reg & TEMP_STATUS_CHANEN) |
| data->temp_enabled |= (1 << i); |
| } |
| } |
| |
| static void pc87427_remove_files(struct device *dev) |
| { |
| struct pc87427_data *data = dev_get_drvdata(dev); |
| int i; |
| |
| device_remove_file(dev, &dev_attr_name); |
| for (i = 0; i < 8; i++) { |
| if (!(data->fan_enabled & (1 << i))) |
| continue; |
| sysfs_remove_group(&dev->kobj, &pc87427_group_fan[i]); |
| } |
| for (i = 0; i < 4; i++) { |
| if (!(data->pwm_enabled & (1 << i))) |
| continue; |
| sysfs_remove_group(&dev->kobj, &pc87427_group_pwm[i]); |
| } |
| for (i = 0; i < 6; i++) { |
| if (!(data->temp_enabled & (1 << i))) |
| continue; |
| sysfs_remove_group(&dev->kobj, &pc87427_group_temp[i]); |
| } |
| } |
| |
| static int pc87427_probe(struct platform_device *pdev) |
| { |
| struct pc87427_sio_data *sio_data = dev_get_platdata(&pdev->dev); |
| struct pc87427_data *data; |
| int i, err, res_count; |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(struct pc87427_data), |
| GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| data->address[0] = sio_data->address[0]; |
| data->address[1] = sio_data->address[1]; |
| res_count = (data->address[0] != 0) + (data->address[1] != 0); |
| |
| err = pc87427_request_regions(pdev, res_count); |
| if (err) |
| return err; |
| |
| mutex_init(&data->lock); |
| data->name = "pc87427"; |
| platform_set_drvdata(pdev, data); |
| pc87427_init_device(&pdev->dev); |
| |
| /* Register sysfs hooks */ |
| err = device_create_file(&pdev->dev, &dev_attr_name); |
| if (err) |
| return err; |
| for (i = 0; i < 8; i++) { |
| if (!(data->fan_enabled & (1 << i))) |
| continue; |
| err = sysfs_create_group(&pdev->dev.kobj, |
| &pc87427_group_fan[i]); |
| if (err) |
| goto exit_remove_files; |
| } |
| for (i = 0; i < 4; i++) { |
| if (!(data->pwm_enabled & (1 << i))) |
| continue; |
| err = sysfs_create_group(&pdev->dev.kobj, |
| &pc87427_group_pwm[i]); |
| if (err) |
| goto exit_remove_files; |
| } |
| for (i = 0; i < 6; i++) { |
| if (!(data->temp_enabled & (1 << i))) |
| continue; |
| err = sysfs_create_group(&pdev->dev.kobj, |
| &pc87427_group_temp[i]); |
| if (err) |
| goto exit_remove_files; |
| } |
| |
| data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| dev_err(&pdev->dev, "Class registration failed (%d)\n", err); |
| goto exit_remove_files; |
| } |
| |
| return 0; |
| |
| exit_remove_files: |
| pc87427_remove_files(&pdev->dev); |
| return err; |
| } |
| |
| static int pc87427_remove(struct platform_device *pdev) |
| { |
| struct pc87427_data *data = platform_get_drvdata(pdev); |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| pc87427_remove_files(&pdev->dev); |
| |
| return 0; |
| } |
| |
| |
| static struct platform_driver pc87427_driver = { |
| .driver = { |
| .name = DRVNAME, |
| }, |
| .probe = pc87427_probe, |
| .remove = pc87427_remove, |
| }; |
| |
| static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data) |
| { |
| struct resource res[2] = { |
| { .flags = IORESOURCE_IO }, |
| { .flags = IORESOURCE_IO }, |
| }; |
| int err, i, res_count; |
| |
| res_count = 0; |
| for (i = 0; i < 2; i++) { |
| if (!sio_data->address[i]) |
| continue; |
| res[res_count].start = sio_data->address[i]; |
| res[res_count].end = sio_data->address[i] + REGION_LENGTH - 1; |
| res[res_count].name = logdev_str[i]; |
| |
| err = acpi_check_resource_conflict(&res[res_count]); |
| if (err) |
| goto exit; |
| |
| res_count++; |
| } |
| |
| pdev = platform_device_alloc(DRVNAME, res[0].start); |
| if (!pdev) { |
| err = -ENOMEM; |
| pr_err("Device allocation failed\n"); |
| goto exit; |
| } |
| |
| err = platform_device_add_resources(pdev, res, res_count); |
| if (err) { |
| pr_err("Device resource addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add_data(pdev, sio_data, |
| sizeof(struct pc87427_sio_data)); |
| if (err) { |
| pr_err("Platform data allocation failed\n"); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add(pdev); |
| if (err) { |
| pr_err("Device addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| return 0; |
| |
| exit_device_put: |
| platform_device_put(pdev); |
| exit: |
| return err; |
| } |
| |
| static int __init pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data) |
| { |
| u16 val; |
| u8 cfg, cfg_b; |
| int i, err = 0; |
| |
| /* Identify device */ |
| val = force_id ? force_id : superio_inb(sioaddr, SIOREG_DEVID); |
| if (val != 0xf2) { /* PC87427 */ |
| err = -ENODEV; |
| goto exit; |
| } |
| |
| for (i = 0; i < 2; i++) { |
| sio_data->address[i] = 0; |
| /* Select logical device */ |
| superio_outb(sioaddr, SIOREG_LDSEL, logdev[i]); |
| |
| val = superio_inb(sioaddr, SIOREG_ACT); |
| if (!(val & 0x01)) { |
| pr_info("Logical device 0x%02x not activated\n", |
| logdev[i]); |
| continue; |
| } |
| |
| val = superio_inb(sioaddr, SIOREG_MAP); |
| if (val & 0x01) { |
| pr_warn("Logical device 0x%02x is memory-mapped, can't use\n", |
| logdev[i]); |
| continue; |
| } |
| |
| val = (superio_inb(sioaddr, SIOREG_IOBASE) << 8) |
| | superio_inb(sioaddr, SIOREG_IOBASE + 1); |
| if (!val) { |
| pr_info("I/O base address not set for logical device 0x%02x\n", |
| logdev[i]); |
| continue; |
| } |
| sio_data->address[i] = val; |
| } |
| |
| /* No point in loading the driver if everything is disabled */ |
| if (!sio_data->address[0] && !sio_data->address[1]) { |
| err = -ENODEV; |
| goto exit; |
| } |
| |
| /* Check which fan inputs are wired */ |
| sio_data->has_fanin = (1 << 2) | (1 << 3); /* FANIN2, FANIN3 */ |
| |
| cfg = superio_inb(sioaddr, SIOREG_CF2); |
| if (!(cfg & (1 << 3))) |
| sio_data->has_fanin |= (1 << 0); /* FANIN0 */ |
| if (!(cfg & (1 << 2))) |
| sio_data->has_fanin |= (1 << 4); /* FANIN4 */ |
| |
| cfg = superio_inb(sioaddr, SIOREG_CFD); |
| if (!(cfg & (1 << 0))) |
| sio_data->has_fanin |= (1 << 1); /* FANIN1 */ |
| |
| cfg = superio_inb(sioaddr, SIOREG_CF4); |
| if (!(cfg & (1 << 0))) |
| sio_data->has_fanin |= (1 << 7); /* FANIN7 */ |
| cfg_b = superio_inb(sioaddr, SIOREG_CFB); |
| if (!(cfg & (1 << 1)) && (cfg_b & (1 << 3))) |
| sio_data->has_fanin |= (1 << 5); /* FANIN5 */ |
| cfg = superio_inb(sioaddr, SIOREG_CF3); |
| if ((cfg & (1 << 3)) && !(cfg_b & (1 << 5))) |
| sio_data->has_fanin |= (1 << 6); /* FANIN6 */ |
| |
| /* Check which fan outputs are wired */ |
| sio_data->has_fanout = (1 << 0); /* FANOUT0 */ |
| if (cfg_b & (1 << 0)) |
| sio_data->has_fanout |= (1 << 3); /* FANOUT3 */ |
| |
| cfg = superio_inb(sioaddr, SIOREG_CFC); |
| if (!(cfg & (1 << 4))) { |
| if (cfg_b & (1 << 1)) |
| sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ |
| if (cfg_b & (1 << 2)) |
| sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ |
| } |
| |
| /* FANOUT1 and FANOUT2 can each be routed to 2 different pins */ |
| cfg = superio_inb(sioaddr, SIOREG_CF5); |
| if (cfg & (1 << 6)) |
| sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ |
| if (cfg & (1 << 5)) |
| sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ |
| |
| exit: |
| superio_exit(sioaddr); |
| return err; |
| } |
| |
| static int __init pc87427_init(void) |
| { |
| int err; |
| struct pc87427_sio_data sio_data; |
| |
| if (pc87427_find(0x2e, &sio_data) |
| && pc87427_find(0x4e, &sio_data)) |
| return -ENODEV; |
| |
| err = platform_driver_register(&pc87427_driver); |
| if (err) |
| goto exit; |
| |
| /* Sets global pdev as a side effect */ |
| err = pc87427_device_add(&sio_data); |
| if (err) |
| goto exit_driver; |
| |
| return 0; |
| |
| exit_driver: |
| platform_driver_unregister(&pc87427_driver); |
| exit: |
| return err; |
| } |
| |
| static void __exit pc87427_exit(void) |
| { |
| platform_device_unregister(pdev); |
| platform_driver_unregister(&pc87427_driver); |
| } |
| |
| MODULE_AUTHOR("Jean Delvare <[email protected]>"); |
| MODULE_DESCRIPTION("PC87427 hardware monitoring driver"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(pc87427_init); |
| module_exit(pc87427_exit); |
