diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2015-04-05 13:16:54 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-04-19 06:32:37 -0700 |
| commit | f1bbe618604a4aa833a4af0b1ecdfb47a25455c6 (patch) | |
| tree | d09f10fc0e7c6dd7b6bdf43a329dbedfaf2003d2 /drivers/hwmon | |
| parent | c962024e306ed598600853854a067b521bf5b530 (diff) | |
| download | talos-obmc-linux-f1bbe618604a4aa833a4af0b1ecdfb47a25455c6.tar.gz talos-obmc-linux-f1bbe618604a4aa833a4af0b1ecdfb47a25455c6.zip | |
hwmon: (it87) Support disabling fan control for all pwm control and chips
On/Off mode is only supported for pwm controls 0-2, and not supported at all for
IT8603E/IT8623E. For pwm controls 3-6 and for IT8603E/IT8623E, SmartGuardian mode
is always enabled. Use it and set the pwm value to the maximum if fan control
is disabled.
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/it87.c | 52 |
1 files changed, 31 insertions, 21 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 515c5cd1890b..f40d81a0a9fc 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -1030,18 +1030,19 @@ static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type, static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type, set_temp_type, 2); -/* 3 Fans */ +/* 6 Fans */ static int pwm_mode(const struct it87_data *data, int nr) { - int ctrl = data->fan_main_ctrl & BIT(nr); + if (data->type != it8603 && nr < 3 && !(data->fan_main_ctrl & BIT(nr))) + return 0; /* Full speed */ + if (data->pwm_ctrl[nr] & 0x80) + return 2; /* Automatic mode */ + if ((data->type == it8603 || nr >= 3) && + data->pwm_duty[nr] == pwm_to_reg(data, 0xff)) + return 0; /* Full speed */ - if (ctrl == 0 && data->type != it8603) /* Full speed */ - return 0; - if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ - return 2; - else /* Manual mode */ - return 1; + return 1; /* Manual mode */ } static ssize_t show_fan(struct device *dev, struct device_attribute *attr, @@ -1242,21 +1243,30 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, return -EINVAL; } - /* IT8603E does not have on/off mode */ - if (val == 0 && data->type == it8603) - return -EINVAL; - mutex_lock(&data->update_lock); if (val == 0) { - int tmp; - /* make sure the fan is on when in on/off mode */ - tmp = it87_read_value(data, IT87_REG_FAN_CTL); - it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr)); - /* set on/off mode */ - data->fan_main_ctrl &= ~BIT(nr); - it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, - data->fan_main_ctrl); + if (nr < 3 && data->type != it8603) { + int tmp; + /* make sure the fan is on when in on/off mode */ + tmp = it87_read_value(data, IT87_REG_FAN_CTL); + it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr)); + /* set on/off mode */ + data->fan_main_ctrl &= ~BIT(nr); + it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, + data->fan_main_ctrl); + } else { + /* No on/off mode, set maximum pwm value */ + data->pwm_duty[nr] = pwm_to_reg(data, 0xff); + it87_write_value(data, IT87_REG_PWM_DUTY[nr], + data->pwm_duty[nr]); + /* and set manual mode */ + data->pwm_ctrl[nr] = has_newer_autopwm(data) ? + data->pwm_temp_map[nr] : + data->pwm_duty[nr]; + it87_write_value(data, IT87_REG_PWM[nr], + data->pwm_ctrl[nr]); + } } else { if (val == 1) /* Manual mode */ data->pwm_ctrl[nr] = has_newer_autopwm(data) ? @@ -1266,7 +1276,7 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]); - if (data->type != it8603) { + if (data->type != it8603 && nr < 3) { /* set SmartGuardian mode */ data->fan_main_ctrl |= BIT(nr); it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, |
