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| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-02-13 23:01:25 -0800 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-03-14 22:39:16 -0700 |
| commit | b84bb5186297d181075d917e9049da3a3b78d10d (patch) | |
| tree | 26d63a64d9cfbd01de145c1705e0f0343e1db2ad /drivers/hwmon | |
| parent | 279af1a91a041070e17cb41900151cb724e1b32a (diff) | |
| download | kernel_samsung_smdk4412-b84bb5186297d181075d917e9049da3a3b78d10d.zip kernel_samsung_smdk4412-b84bb5186297d181075d917e9049da3a3b78d10d.tar.gz kernel_samsung_smdk4412-b84bb5186297d181075d917e9049da3a3b78d10d.tar.bz2 | |
hwmon: (w83627ehf) Permit enabling SmartFan IV mode if configured at startup
If SmartFan IV mode was configured at startup, it should be possible
to re-enable it later on.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/w83627ehf.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index 2420f1c..2f17f99 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -346,7 +346,10 @@ struct w83627ehf_data { 2->thermal cruise mode (also called SmartFan I) 3->fan speed cruise mode 4->variable thermal cruise (also called - SmartFan III) */ + SmartFan III) + 5->enhanced variable thermal cruise (also called + SmartFan IV) */ + u8 pwm_enable_orig[4]; /* original value of pwm_enable */ u8 pwm_num; /* number of pwm */ u8 pwm[4]; u8 target_temp[4]; @@ -1055,7 +1058,7 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr, if (err < 0) return err; - if (!val || (val > 4)) + if (!val || (val > 4 && val != data->pwm_enable_orig[nr])) return -EINVAL; mutex_lock(&data->update_lock); reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]); @@ -1617,6 +1620,11 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev) /* Read fan clock dividers immediately */ w83627ehf_update_fan_div(data); + /* Read pwm data to save original values */ + w83627ehf_update_pwm_common(dev, data); + for (i = 0; i < data->pwm_num; i++) + data->pwm_enable_orig[i] = data->pwm_enable[i]; + /* Register sysfs hooks */ for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) { err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr); |