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author | Marc Hulsman <m.hulsman@tudelft.nl> | 2008-10-17 17:51:17 +0200 |
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committer | Jean Delvare <khali@mahadeva.delvare> | 2008-10-17 17:51:17 +0200 |
commit | a5a4598cd2e7cae456a7f2a100bf0e5c3c7811c7 (patch) | |
tree | d2a5da96eae842f33bea66101a92abf88612aa9f /drivers/hwmon/w83791d.c | |
parent | b5938f8c4a530b2fad18f2293ffaf79ac9f5a148 (diff) | |
download | kernel_samsung_tuna-a5a4598cd2e7cae456a7f2a100bf0e5c3c7811c7.zip kernel_samsung_tuna-a5a4598cd2e7cae456a7f2a100bf0e5c3c7811c7.tar.gz kernel_samsung_tuna-a5a4598cd2e7cae456a7f2a100bf0e5c3c7811c7.tar.bz2 |
hwmon: (w83791d) add support for thermal cruise mode
Add support to set target temperature and tolerance for thermal
cruise mode.
Signed-off-by: Marc Hulsman <m.hulsman@tudelft.nl>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/w83791d.c')
-rw-r--r-- | drivers/hwmon/w83791d.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c index a4d2b02..5768def 100644 --- a/drivers/hwmon/w83791d.c +++ b/drivers/hwmon/w83791d.c @@ -125,6 +125,17 @@ static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = { 0xA1, /* PWM 5 duty cycle register in DataSheet */ }; +static const u8 W83791D_REG_TEMP_TARGET[3] = { + 0x85, /* PWM 1 target temperature for temp 1 */ + 0x86, /* PWM 2 target temperature for temp 2 */ + 0x96, /* PWM 3 target temperature for temp 3 */ +}; + +static const u8 W83791D_REG_TEMP_TOL[2] = { + 0x87, /* PWM 1/2 temperature tolerance */ + 0x97, /* PWM 3 temperature tolerance */ +}; + static const u8 W83791D_REG_FAN_CFG[2] = { 0x84, /* FAN 1/2 configuration */ 0x95, /* FAN 3 configuration */ @@ -234,6 +245,15 @@ static u8 fan_to_reg(long rpm, int div) (val) < 0 ? ((val) - 250) / 500 * 128 : \ ((val) + 250) / 500 * 128) +/* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */ +#define TARGET_TEMP_TO_REG(val) ((val) < 0 ? 0 : \ + (val) >= 127000 ? 127 : \ + ((val) + 500) / 1000) + +/* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */ +#define TOL_TEMP_TO_REG(val) ((val) < 0 ? 0 : \ + (val) >= 15000 ? 15 : \ + ((val) + 500) / 1000) #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff) #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff) @@ -290,6 +310,9 @@ struct w83791d_data { u8 pwm_enable[3]; /* pwm enable status for fan 1-3 (fan 4-5 only support manual mode) */ + u8 temp_target[3]; /* pwm 1-3 target temperature */ + u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */ + /* Misc */ u32 alarms; /* realtime status register encoding,combined */ u8 beep_enable; /* Global beep enable */ @@ -774,6 +797,110 @@ static struct sensor_device_attribute sda_pwmenable[] = { show_pwmenable, store_pwmenable, 2), }; +/* For Smart Fan I / Thermal Cruise */ +static ssize_t show_temp_target(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + struct w83791d_data *data = w83791d_update_device(dev); + int nr = sensor_attr->index; + return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr])); +} + +static ssize_t store_temp_target(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + struct i2c_client *client = to_i2c_client(dev); + struct w83791d_data *data = i2c_get_clientdata(client); + int nr = sensor_attr->index; + unsigned long val; + u8 target_mask; + + if (strict_strtoul(buf, 10, &val)) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->temp_target[nr] = TARGET_TEMP_TO_REG(val); + target_mask = w83791d_read(client, + W83791D_REG_TEMP_TARGET[nr]) & 0x80; + w83791d_write(client, W83791D_REG_TEMP_TARGET[nr], + data->temp_target[nr] | target_mask); + mutex_unlock(&data->update_lock); + return count; +} + +static struct sensor_device_attribute sda_temp_target[] = { + SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO, + show_temp_target, store_temp_target, 0), + SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO, + show_temp_target, store_temp_target, 1), + SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO, + show_temp_target, store_temp_target, 2), +}; + +static ssize_t show_temp_tolerance(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + struct w83791d_data *data = w83791d_update_device(dev); + int nr = sensor_attr->index; + return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr])); +} + +static ssize_t store_temp_tolerance(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + struct i2c_client *client = to_i2c_client(dev); + struct w83791d_data *data = i2c_get_clientdata(client); + int nr = sensor_attr->index; + unsigned long val; + u8 target_mask; + u8 reg_idx = 0; + u8 val_shift = 0; + u8 keep_mask = 0; + + if (strict_strtoul(buf, 10, &val)) + return -EINVAL; + + switch (nr) { + case 0: + reg_idx = 0; + val_shift = 0; + keep_mask = 0xf0; + break; + case 1: + reg_idx = 0; + val_shift = 4; + keep_mask = 0x0f; + break; + case 2: + reg_idx = 1; + val_shift = 0; + keep_mask = 0xf0; + break; + } + + mutex_lock(&data->update_lock); + data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val); + target_mask = w83791d_read(client, + W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask; + w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx], + (data->temp_tolerance[nr] << val_shift) | target_mask); + mutex_unlock(&data->update_lock); + return count; +} + +static struct sensor_device_attribute sda_temp_tolerance[] = { + SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO, + show_temp_tolerance, store_temp_tolerance, 0), + SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO, + show_temp_tolerance, store_temp_tolerance, 1), + SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO, + show_temp_tolerance, store_temp_tolerance, 2), +}; + /* read/write the temperature1, includes measured value and limits */ static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr, char *buf) @@ -1044,6 +1171,12 @@ static struct attribute *w83791d_attributes[] = { &sda_pwmenable[0].dev_attr.attr, &sda_pwmenable[1].dev_attr.attr, &sda_pwmenable[2].dev_attr.attr, + &sda_temp_target[0].dev_attr.attr, + &sda_temp_target[1].dev_attr.attr, + &sda_temp_target[2].dev_attr.attr, + &sda_temp_tolerance[0].dev_attr.attr, + &sda_temp_tolerance[1].dev_attr.attr, + &sda_temp_tolerance[2].dev_attr.attr, NULL }; @@ -1404,6 +1537,21 @@ static struct w83791d_data *w83791d_update_device(struct device *dev) data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03; data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03; + /* Update PWM target temperature */ + for (i = 0; i < 3; i++) { + data->temp_target[i] = w83791d_read(client, + W83791D_REG_TEMP_TARGET[i]) & 0x7f; + } + + /* Update PWM temperature tolerance */ + for (i = 0; i < 2; i++) { + reg_array_tmp[i] = w83791d_read(client, + W83791D_REG_TEMP_TOL[i]); + } + data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f; + data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f; + data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f; + /* Update the first temperature sensor */ for (i = 0; i < 3; i++) { data->temp1[i] = w83791d_read(client, |