linux-stable/drivers/video
Stefan Agner 2f4647a149 backlight: gpio-backlight: Use default-on on GPIO request
There are situations where the backlight should be on at boot time
(e.g. if the boot loader already turned the display on). The DT
bindings specify the "default-on" property for that purpose.
Currently, the initial state of the GPIO at request time is always
set to logical off (high or low depending on whether it is an
active high or low GPIO). Since the GPIO is requested as an output,
the GPIO will be driven low for a short period of time, which leads
to a flickering display in the above use-case.

Initialize the GPIO depending on the default-on property to be
logical on or off.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-01-11 07:58:35 +00:00
..
backlight backlight: gpio-backlight: Use default-on on GPIO request 2016-01-11 07:58:35 +00:00
console fbcon: initialize blink interval before calling fb_set_par 2015-10-17 22:00:39 -07:00
fbdev fbdev changes for 4.4 2015-11-10 10:00:09 -08:00
logo video/logo: prevent use of logos after they have been freed 2014-12-29 10:06:55 +02:00
display_timing.c
hdmi.c [media] hdmi: rename HDMI_AUDIO_CODING_TYPE_EXT_STREAM to _EXT_CT 2015-01-27 10:19:12 -02:00
Kconfig drm: Remove two-level menu in Kconfig 2015-08-07 19:06:37 +02:00
Makefile video: move fbdev to drivers/video/fbdev 2014-04-17 08:10:19 +03:00
of_display_timing.c video: of: fix memory leak 2015-10-07 14:13:59 +03:00
of_videomode.c video: Fix possible leak in of_get_videomode() 2015-08-10 15:11:12 +03:00
vgastate.c fbdev: vgastate: remove trailing whitespaces 2015-01-13 12:53:25 +02:00
videomode.c