diff options
Diffstat (limited to 'drivers/hwmon/f75375s.c')
| -rw-r--r-- | drivers/hwmon/f75375s.c | 729 |
1 files changed, 729 insertions, 0 deletions
diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c new file mode 100644 index 0000000..1692de3 --- /dev/null +++ b/drivers/hwmon/f75375s.c @@ -0,0 +1,729 @@ +/* + * f75375s.c - driver for the Fintek F75375/SP and F75373 + * hardware monitoring features + * Copyright (C) 2006-2007 Riku Voipio <riku.voipio@movial.fi> + * + * Datasheets available at: + * + * f75375: + * http://www.fintek.com.tw/files/productfiles/2005111152950.pdf + * + * f75373: + * http://www.fintek.com.tw/files/productfiles/2005111153128.pdf + * + * 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. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/module.h> +#include <linux/jiffies.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/f75375s.h> + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD_2(f75373, f75375); + +/* Fintek F75375 registers */ +#define F75375_REG_CONFIG0 0x0 +#define F75375_REG_CONFIG1 0x1 +#define F75375_REG_CONFIG2 0x2 +#define F75375_REG_CONFIG3 0x3 +#define F75375_REG_ADDR 0x4 +#define F75375_REG_INTR 0x31 +#define F75375_CHIP_ID 0x5A +#define F75375_REG_VERSION 0x5C +#define F75375_REG_VENDOR 0x5D +#define F75375_REG_FAN_TIMER 0x60 + +#define F75375_REG_VOLT(nr) (0x10 + (nr)) +#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2) +#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2) + +#define F75375_REG_TEMP(nr) (0x14 + (nr)) +#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2) +#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2) + +#define F75375_REG_FAN(nr) (0x16 + (nr) * 2) +#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2) +#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10) +#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10) +#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10) + +#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10) +#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step)) +#define F75375_REG_FAN_B_SPEED(nr, step) \ + ((0xA5 + (nr) * 0x10) + (step) * 2) + +#define F75375_REG_PWM1_RAISE_DUTY 0x69 +#define F75375_REG_PWM2_RAISE_DUTY 0x6A +#define F75375_REG_PWM1_DROP_DUTY 0x6B +#define F75375_REG_PWM2_DROP_DUTY 0x6C + +#define FAN_CTRL_LINEAR(nr) (4 + nr) +#define FAN_CTRL_MODE(nr) (5 + ((nr) * 2)) + +/* + * Data structures and manipulation thereof + */ + +struct f75375_data { + unsigned short addr; + struct device *hwmon_dev; + + const char *name; + int kind; + struct mutex update_lock; /* protect register access */ + char valid; + unsigned long last_updated; /* In jiffies */ + unsigned long last_limits; /* In jiffies */ + + /* Register values */ + u8 in[4]; + u8 in_max[4]; + u8 in_min[4]; + u16 fan[2]; + u16 fan_min[2]; + u16 fan_full[2]; + u16 fan_exp[2]; + u8 fan_timer; + u8 pwm[2]; + u8 pwm_mode[2]; + u8 pwm_enable[2]; + s8 temp[2]; + s8 temp_high[2]; + s8 temp_max_hyst[2]; +}; + +static int f75375_detect(struct i2c_client *client, int kind, + struct i2c_board_info *info); +static int f75375_probe(struct i2c_client *client, + const struct i2c_device_id *id); +static int f75375_remove(struct i2c_client *client); + +static const struct i2c_device_id f75375_id[] = { + { "f75373", f75373 }, + { "f75375", f75375 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, f75375_id); + +static struct i2c_driver f75375_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "f75375", + }, + .probe = f75375_probe, + .remove = f75375_remove, + .id_table = f75375_id, + .detect = f75375_detect, + .address_data = &addr_data, +}; + +static inline int f75375_read8(struct i2c_client *client, u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +/* in most cases, should be called while holding update_lock */ +static inline u16 f75375_read16(struct i2c_client *client, u8 reg) +{ + return ((i2c_smbus_read_byte_data(client, reg) << 8) + | i2c_smbus_read_byte_data(client, reg + 1)); +} + +static inline void f75375_write8(struct i2c_client *client, u8 reg, + u8 value) +{ + i2c_smbus_write_byte_data(client, reg, value); +} + +static inline void f75375_write16(struct i2c_client *client, u8 reg, + u16 value) +{ + int err = i2c_smbus_write_byte_data(client, reg, (value << 8)); + if (err) + return; + i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF)); +} + +static struct f75375_data *f75375_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int nr; + + mutex_lock(&data->update_lock); + + /* Limit registers cache is refreshed after 60 seconds */ + if (time_after(jiffies, data->last_limits + 60 * HZ) + || !data->valid) { + for (nr = 0; nr < 2; nr++) { + data->temp_high[nr] = + f75375_read8(client, F75375_REG_TEMP_HIGH(nr)); + data->temp_max_hyst[nr] = + f75375_read8(client, F75375_REG_TEMP_HYST(nr)); + data->fan_full[nr] = + f75375_read16(client, F75375_REG_FAN_FULL(nr)); + data->fan_min[nr] = + f75375_read16(client, F75375_REG_FAN_MIN(nr)); + data->fan_exp[nr] = + f75375_read16(client, F75375_REG_FAN_EXP(nr)); + data->pwm[nr] = f75375_read8(client, + F75375_REG_FAN_PWM_DUTY(nr)); + + } + for (nr = 0; nr < 4; nr++) { + data->in_max[nr] = + f75375_read8(client, F75375_REG_VOLT_HIGH(nr)); + data->in_min[nr] = + f75375_read8(client, F75375_REG_VOLT_LOW(nr)); + } + data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER); + data->last_limits = jiffies; + } + + /* Measurement registers cache is refreshed after 2 second */ + if (time_after(jiffies, data->last_updated + 2 * HZ) + || !data->valid) { + for (nr = 0; nr < 2; nr++) { + data->temp[nr] = + f75375_read8(client, F75375_REG_TEMP(nr)); + data->fan[nr] = + f75375_read16(client, F75375_REG_FAN(nr)); + } + for (nr = 0; nr < 4; nr++) + data->in[nr] = + f75375_read8(client, F75375_REG_VOLT(nr)); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + return data; +} + +static inline u16 rpm_from_reg(u16 reg) +{ + if (reg == 0 || reg == 0xffff) + return 0; + return (1500000 / reg); +} + +static inline u16 rpm_to_reg(int rpm) +{ + if (rpm < 367 || rpm > 0xffff) + return 0xffff; + return (1500000 / rpm); +} + +static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->fan_min[nr] = rpm_to_reg(val); + f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->fan_exp[nr] = rpm_to_reg(val); + f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); + f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_pwm_enable(struct device *dev, struct device_attribute + *attr, char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", data->pwm_enable[nr]); +} + +static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) +{ + struct f75375_data *data = i2c_get_clientdata(client); + u8 fanmode; + + if (val < 0 || val > 4) + return -EINVAL; + + fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); + fanmode = ~(3 << FAN_CTRL_MODE(nr)); + + switch (val) { + case 0: /* Full speed */ + fanmode |= (3 << FAN_CTRL_MODE(nr)); + data->pwm[nr] = 255; + f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), + data->pwm[nr]); + break; + case 1: /* PWM */ + fanmode |= (3 << FAN_CTRL_MODE(nr)); + break; + case 2: /* AUTOMATIC*/ + fanmode |= (2 << FAN_CTRL_MODE(nr)); + break; + case 3: /* fan speed */ + break; + } + f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); + data->pwm_enable[nr] = val; + return 0; +} + +static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + int err = 0; + + mutex_lock(&data->update_lock); + err = set_pwm_enable_direct(client, nr, val); + mutex_unlock(&data->update_lock); + return err ? err : count; +} + +static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + u8 conf = 0; + + if (!(val == 0 || val == 1)) + return -EINVAL; + + mutex_lock(&data->update_lock); + conf = f75375_read8(client, F75375_REG_CONFIG1); + conf = ~(1 << FAN_CTRL_LINEAR(nr)); + + if (val == 0) + conf |= (1 << FAN_CTRL_LINEAR(nr)) ; + + f75375_write8(client, F75375_REG_CONFIG1, conf); + data->pwm_mode[nr] = val; + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_pwm(struct device *dev, struct device_attribute + *attr, char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", data->pwm[nr]); +} + +static ssize_t show_pwm_mode(struct device *dev, struct device_attribute + *attr, char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", data->pwm_mode[nr]); +} + +#define VOLT_FROM_REG(val) ((val) * 8) +#define VOLT_TO_REG(val) ((val) / 8) + +static ssize_t show_in(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); +} + +static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); +} + +static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); +} + +static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); + mutex_lock(&data->update_lock); + data->in_max[nr] = val; + f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtoul(buf, NULL, 10); + val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); + mutex_lock(&data->update_lock); + data->in_min[nr] = val; + f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); + mutex_unlock(&data->update_lock); + return count; +} +#define TEMP_FROM_REG(val) ((val) * 1000) +#define TEMP_TO_REG(val) ((val) / 1000) + +static ssize_t show_temp(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); +} + +static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); +} + +static ssize_t show_temp_max_hyst(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct f75375_data *data = f75375_update_device(dev); + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); +} + +static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtol(buf, NULL, 10); + val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); + mutex_lock(&data->update_lock); + data->temp_high[nr] = val; + f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t set_temp_max_hyst(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct f75375_data *data = i2c_get_clientdata(client); + int val = simple_strtol(buf, NULL, 10); + val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); + mutex_lock(&data->update_lock); + data->temp_max_hyst[nr] = val; + f75375_write8(client, F75375_REG_TEMP_HYST(nr), + data->temp_max_hyst[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +#define show_fan(thing) \ +static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ + char *buf)\ +{\ + int nr = to_sensor_dev_attr(attr)->index;\ + struct f75375_data *data = f75375_update_device(dev); \ + return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ +} + +show_fan(fan); +show_fan(fan_min); +show_fan(fan_full); +show_fan(fan_exp); + +static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); +static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, + show_in_max, set_in_max, 0); +static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, + show_in_min, set_in_min, 0); +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); +static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, + show_in_max, set_in_max, 1); +static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, + show_in_min, set_in_min, 1); +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); +static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, + show_in_max, set_in_max, 2); +static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, + show_in_min, set_in_min, 2); +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); +static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, + show_in_max, set_in_max, 3); +static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, + show_in_min, set_in_min, 3); +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); +static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, + show_temp_max_hyst, set_temp_max_hyst, 0); +static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, + show_temp_max, set_temp_max, 0); +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); +static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, + show_temp_max_hyst, set_temp_max_hyst, 1); +static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, + show_temp_max, set_temp_max, 1); +static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); +static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0); +static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, + show_fan_min, set_fan_min, 0); +static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR, + show_fan_exp, set_fan_exp, 0); +static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); +static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1); +static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, + show_fan_min, set_fan_min, 1); +static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR, + show_fan_exp, set_fan_exp, 1); +static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, + show_pwm, set_pwm, 0); +static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, + show_pwm_enable, set_pwm_enable, 0); +static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, + show_pwm_mode, set_pwm_mode, 0); +static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, + show_pwm, set_pwm, 1); +static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, + show_pwm_enable, set_pwm_enable, 1); +static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, + show_pwm_mode, set_pwm_mode, 1); + +static struct attribute *f75375_attributes[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_full.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan1_exp.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_full.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan2_exp.dev_attr.attr, + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm1_mode.dev_attr.attr, + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_pwm2_enable.dev_attr.attr, + &sensor_dev_attr_pwm2_mode.dev_attr.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + NULL +}; + +static const struct attribute_group f75375_group = { + .attrs = f75375_attributes, +}; + +static void f75375_init(struct i2c_client *client, struct f75375_data *data, + struct f75375s_platform_data *f75375s_pdata) +{ + int nr; + set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); + set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); + for (nr = 0; nr < 2; nr++) { + data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); + f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), + data->pwm[nr]); + } + +} + +static int f75375_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct f75375_data *data = i2c_get_clientdata(client); + struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; + int err; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL))) + return -ENOMEM; + + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + data->kind = id->driver_data; + + if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group))) + goto exit_free; + + if (data->kind == f75375) { + err = sysfs_chmod_file(&client->dev.kobj, + &sensor_dev_attr_pwm1_mode.dev_attr.attr, + S_IRUGO | S_IWUSR); + if (err) + goto exit_remove; + err = sysfs_chmod_file(&client->dev.kobj, + &sensor_dev_attr_pwm2_mode.dev_attr.attr, + S_IRUGO | S_IWUSR); + if (err) + goto exit_remove; + } + + data->hwmon_dev = hwmon_device_register(&client->dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto exit_remove; + } + + if (f75375s_pdata != NULL) + f75375_init(client, data, f75375s_pdata); + + return 0; + +exit_remove: + sysfs_remove_group(&client->dev.kobj, &f75375_group); +exit_free: + kfree(data); + i2c_set_clientdata(client, NULL); + return err; +} + +static int f75375_remove(struct i2c_client *client) +{ + struct f75375_data *data = i2c_get_clientdata(client); + hwmon_device_unregister(data->hwmon_dev); + sysfs_remove_group(&client->dev.kobj, &f75375_group); + kfree(data); + i2c_set_clientdata(client, NULL); + return 0; +} + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int f75375_detect(struct i2c_client *client, int kind, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + u8 version = 0; + const char *name = ""; + + if (kind < 0) { + u16 vendid = f75375_read16(client, F75375_REG_VENDOR); + u16 chipid = f75375_read16(client, F75375_CHIP_ID); + version = f75375_read8(client, F75375_REG_VERSION); + if (chipid == 0x0306 && vendid == 0x1934) { + kind = f75375; + } else if (chipid == 0x0204 && vendid == 0x1934) { + kind = f75373; + } else { + dev_err(&adapter->dev, + "failed,%02X,%02X,%02X\n", + chipid, version, vendid); + return -ENODEV; + } + } + + if (kind == f75375) { + name = "f75375"; + } else if (kind == f75373) { + name = "f75373"; + } + dev_info(&adapter->dev, "found %s version: %02X\n", name, version); + strlcpy(info->type, name, I2C_NAME_SIZE); + + return 0; +} + +static int __init sensors_f75375_init(void) +{ + return i2c_add_driver(&f75375_driver); +} + +static void __exit sensors_f75375_exit(void) +{ + i2c_del_driver(&f75375_driver); +} + +MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver"); + +module_init(sensors_f75375_init); +module_exit(sensors_f75375_exit); |
