path: root/Documentation/devicetree/bindings/leds
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authorRussell King <rmk+kernel@arm.linux.org.uk>2014-04-06 15:20:18 -0700
committerBryan Wu <cooloney@gmail.com>2014-05-08 14:28:07 +0800
commitd19a8a7078a9a8e254c030bcdb6732d26cbd6c16 (patch)
tree3951de02ae3cbb710876d0436f0b24f6e26d3ed8 /Documentation/devicetree/bindings/leds
parentb795e6d94f2193d5e9087f05c445b069a7aa0dcd (diff)
leds: leds-pwm: implement PWM inversion
Some PWM outputs are wired such that the LED they're controlling is connected to supply rather than ground. These PWMs may not support output inversion, or when they do, disabling the PWM may set the PWM output low, causing a "brightness" value of zero to turn the LED fully on. The platform data for this driver already indicates that this was thought about, and we have the "active_low" property there already. However, the implementation for this is missing. Add the trivial implementation for this feature. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
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