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3 Commits

Author SHA1 Message Date
Kamil Debski 48b9d5b4f4 hwmon: (pwm-fan) Fix suspend/resume behavior 
The state of a PWM output is not clearly defined after resume. Some PWM
drivers do not restore the duty cycle upon resume, thus it is necessary to
manually restore the correct value.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-11-11 10:39:45 -08:00
Axel Lin 4e8e75f6a4 hwmon: (pwm-fan) Remove duplicate dev_set_drvdata call 
The dev_set_drvdata() call is equivalent to the platform_set_drvdata() call in
next line.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-08-04 07:01:40 -07:00
Kamil Debski d82d57767c hwmon: Add pwm-fan driver 
The pwm-fan driver enables control of fans connected to PWM lines.
This driver uses the PWM framework, so it is compatible with all
PWM devices that provide drivers through the PWM framework.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
[Guenter Roeck: Last argument to devm_of_pwm_get is pointer, use NULL]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-08-04 07:01:38 -07:00