diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-11-15 21:38:56 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2010-11-15 21:38:56 +0100 |
| commit | ae51cd9bcd9ca841bf45c0ba33823c56ac1ce81e (patch) | |
| tree | bf08d6bc425c43cce063ecdb2e3e76bb776b1618 | |
| parent | 61ec2da506ec6544873f0aba026164e4bdd21751 (diff) | |
| download | kernel_samsung_tuna-ae51cd9bcd9ca841bf45c0ba33823c56ac1ce81e.zip kernel_samsung_tuna-ae51cd9bcd9ca841bf45c0ba33823c56ac1ce81e.tar.gz kernel_samsung_tuna-ae51cd9bcd9ca841bf45c0ba33823c56ac1ce81e.tar.bz2 | |
hwmon: (w83795) Fix fan control mode attributes
There were two bugs:
* Speed cruise mode was improperly reported for all fans but fan1.
* Fan control method (PWM vs. DC) was mixed with the control mode.
It will be added back as a separate attribute, as per the standard
sysfs interface.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
| -rw-r--r-- | drivers/hwmon/w83795.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c index 1d840aa..fd96e72 100644 --- a/drivers/hwmon/w83795.c +++ b/drivers/hwmon/w83795.c @@ -857,20 +857,20 @@ show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) int index = sensor_attr->index; u8 tmp; - if (1 == (data->pwm_fcms[0] & (1 << index))) { + /* Speed cruise mode */ + if (data->pwm_fcms[0] & (1 << index)) { tmp = 2; goto out; } + /* Thermal cruise or SmartFan IV mode */ for (tmp = 0; tmp < 6; tmp++) { if (data->pwm_tfmr[tmp] & (1 << index)) { tmp = 3; goto out; } } - if (data->pwm_fomc & (1 << index)) - tmp = 0; - else - tmp = 1; + /* Manual mode */ + tmp = 1; out: return sprintf(buf, "%u\n", tmp); @@ -890,23 +890,21 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr, if (strict_strtoul(buf, 10, &val) < 0) return -EINVAL; - if (val > 2) + if (val < 1 || val > 2) return -EINVAL; mutex_lock(&data->update_lock); switch (val) { - case 0: case 1: + /* Clear speed cruise mode bits */ data->pwm_fcms[0] &= ~(1 << index); w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); + /* Clear thermal cruise mode bits */ for (i = 0; i < 6; i++) { data->pwm_tfmr[i] &= ~(1 << index); w83795_write(client, W83795_REG_TFMR(i), data->pwm_tfmr[i]); } - data->pwm_fomc |= 1 << index; - data->pwm_fomc ^= val << index; - w83795_write(client, W83795_REG_FOMC, data->pwm_fomc); break; case 2: data->pwm_fcms[0] |= (1 << index); |