kernel/linux.git/drivers/video/backlight/lp855x_bl.c, branch linux-4.4.y

backlight: lp855x: Make sure props struct is zeroed

2015-10-05T12:47:42+00:00

The driver occasionally got stuck in suspend mode or other strange states as those parts of the props struct were never initialized. Signed-off-by: Werner Johansson Signed-off-by: Bjorn Andersson Acked-by: Milo Kim Signed-off-by: Lee Jones

backlight: lp855x: Use private data for regulator control

2015-08-25T07:40:44+00:00

LP855x backlight device can be enabled by external VDD input. The 'supply' data is used for this purpose. It's kind of private data which runs internally, so there is no reason to expose to the platform data. And devm_regulator_get() is moved from _parse_dt() to _probe(). Regulator consumer(lp855x) can control regulator not only from DT but also from platform data configuration in a source file such like board-*.c. Signed-off-by: Milo Kim Acked-by: Sean Paul Acked-by: Jingoo Han Signed-off-by: Lee Jones

backlight: lp855x: Don't clear level on suspend/blank

2015-06-23T14:47:33+00:00

Don't clear the backlight level when we're going into suspend or blanking. Instead, just temporarily set the level to 0 so we retain the value when we resume. Reported-by: Benson Leung Signed-off-by: Sean Paul Tested-by: Stephen Barber Reviewed-by: Benson Leung Acked-by: Milo Kim Signed-off-by: Lee Jones

backlight: lp855x: Add supply regulator to lp855x

2014-12-09T09:24:45+00:00

This patch adds a supply regulator to the lp855x platform data to facilitate powering on/off the 3V rail attached to the controller. Cc: Stéphane Marchesin Cc: Aaron Durbin Signed-off-by: Sean Paul Acked-by: Milo Kim Acked-by: Bryan Wu Acked-by: Jingoo Han Signed-off-by: Lee Jones

backlight: lp855x: Refactor DT parsing code

2014-12-09T09:24:42+00:00

This patch refactors the dt parsing code to avoid setting platform_data, instead just setting lp->pdata directly. This facilitates easier probe deferral since the current scheme would require us to clear out dev->platform_data before deferring. Cc: Stéphane Marchesin Signed-off-by: Sean Paul Acked-by: Milo Kim Acked-by: Bryan Wu Signed-off-by: Lee Jones

backlight: lp855x: Add blank line after declarations

2014-08-29T07:25:44+00:00

Fixed the following checkpatch warning. WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han Signed-off-by: Lee Jones

backlight: Remove trivial get_brightness implementations

2014-06-23T12:24:22+00:00

Since backlight core returns props.brightness in case get_brightness is not implemented trivial implementations are not needed anymore. Acked-by: Jingoo Han Signed-off-by: Andrzej Hajda Signed-off-by: Lee Jones

backlight: lp855x: remove unnecessary parentheses

2014-01-24T00:36:57+00:00

Remove unnecessary parentheses in order to fix the following checkpatch error. ERROR: return is not a function, parentheses are not required Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: lp855x: use devm_backlight_device_register()

2013-11-13T03:09:18+00:00

Use devm_backlight_device_register() to make cleanup paths simpler. Also, unnecessary lp855x_backlight_unregister() is removed. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: use dev_get_platdata()

2013-11-13T03:09:16+00:00

Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds