diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2012-01-27 17:56:06 -0800 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-02-08 14:06:45 -0800 |
| commit | e3703d249a6f14ff3be78ae8324f9c2324ee3020 (patch) | |
| tree | 3a034e0717a728d4cd205640434cbd9894a9b0fa /drivers/hwmon | |
| parent | 0a640fcaa91dd17f552620aad7a5e301f5f373c9 (diff) | |
hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
commit ad77c3e1808f07fa70f707b1c92a683b7c7d3f85 upstream.
NCT6776F only supports pwm mode for pwm2 and pwm3. Return error if an attempt
is made to set those pwm channels to DC mode.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I9e7b7a7eec7c7da5a8102b31c305c2f0061101f3
Reviewed-on: http://git-master/r/79684
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/w83627ehf.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index 4b2fc50c84fe..628451572455 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -1295,6 +1295,7 @@ store_pwm_mode(struct device *dev, struct device_attribute *attr, { struct w83627ehf_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + struct w83627ehf_sio_data *sio_data = dev->platform_data; int nr = sensor_attr->index; unsigned long val; int err; @@ -1306,6 +1307,11 @@ store_pwm_mode(struct device *dev, struct device_attribute *attr, if (val > 1) return -EINVAL; + + /* On NCT67766F, DC mode is only supported for pwm1 */ + if (sio_data->kind == nct6776 && nr && val != 1) + return -EINVAL; + mutex_lock(&data->update_lock); reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]); data->pwm_mode[nr] = val; |