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3 commits

Author SHA1 Message Date
Simon Glass
7cf208d73b dm: video: Update pwm_backlight to support livetree 
Update this driver to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
 2017-07-11 10:08:20 -06:00
Simon Glass
e160f7d430 dm: core: Replace of_offset with accessor 
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2017-02-08 06:12:14 -07:00
Simon Glass
65fba5927c dm: backlight: Add a driver for a PWM backlight 
Many backlights need to use a PWM to control the brightness. Add a driver
for this. It understands the standard device tree binding.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2016-01-21 20:42:36 -07:00