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Subject[PATCH 00/10] pwm-backlight: Add GPIO and power supply support
Date
This series adds the ability to specify a GPIO and a power supply to
enable a backlight.

Patch 1 refactors the power on and power off sequences into separate
functions in preparation for subsequent patches.

Patch 2 adds an optional GPIO to enable a backlight. This patch only
includes the field within the platform data so that it can be properly
setup before actually being put to use.

Patches 3 to 7 convert all users of the pwm-backlight driver to use the
new field. For most of them, this just initializes the field to -1,
marking the field as unused.

Patch 8 uses the new field within the pwm-backlight driver and at the
same time allows it to be parsed from device tree.

Patch 9 implements support for an optional power supply. This relies on
the regulator core to return a dummy regulator when no supply has been
otherwise setup so the driver doesn't have to handle that specially nor
require all users to be updated.

Patch 10 adds a way to keep a backlight turned off at boot. This is
useful when hooking up a backlight with a subsystem such as DRM which
has more explicit semantics as to when a backlight should be turned on.

Due to the dependencies within the series, I propose to take all these
patches through the PWM tree, so I'll need acks from OMAP, PXA, Samsung,
shmobile and Unicore32 maintainers.

Thierry

Thierry Reding (10):
pwm-backlight: Refactor backlight power on/off
pwm-backlight: Add optional enable GPIO
ARM: OMAP: Initialize PWM backlight enable_gpio field
ARM: pxa: Initialize PWM backlight enable_gpio field
ARM: SAMSUNG: Initialize PWM backlight enable_gpio field
ARM: shmobile: Initialize PWM backlight enable_gpio field
unicore32: Initialize PWM backlight enable_gpio field
pwm-backlight: Use new enable_gpio field
pwm-backlight: Use an optional power supply
pwm-backlight: Allow backlight to remain disabled on boot

.../bindings/video/backlight/pwm-backlight.txt | 6 +
arch/arm/mach-omap2/board-zoom-peripherals.c | 1 +
arch/arm/mach-pxa/cm-x300.c | 1 +
arch/arm/mach-pxa/colibri-pxa270-income.c | 1 +
arch/arm/mach-pxa/ezx.c | 1 +
arch/arm/mach-pxa/hx4700.c | 1 +
arch/arm/mach-pxa/lpd270.c | 1 +
arch/arm/mach-pxa/magician.c | 1 +
arch/arm/mach-pxa/mainstone.c | 1 +
arch/arm/mach-pxa/mioa701.c | 1 +
arch/arm/mach-pxa/palm27x.c | 1 +
arch/arm/mach-pxa/palmtc.c | 35 +----
arch/arm/mach-pxa/palmte2.c | 1 +
arch/arm/mach-pxa/pcm990-baseboard.c | 1 +
arch/arm/mach-pxa/raumfeld.c | 1 +
arch/arm/mach-pxa/tavorevb.c | 2 +
arch/arm/mach-pxa/viper.c | 1 +
arch/arm/mach-pxa/z2.c | 2 +
arch/arm/mach-pxa/zylonite.c | 1 +
arch/arm/mach-s3c24xx/mach-h1940.c | 1 +
arch/arm/mach-s3c24xx/mach-rx1950.c | 1 +
arch/arm/mach-s3c64xx/mach-crag6410.c | 1 +
arch/arm/mach-s3c64xx/mach-hmt.c | 1 +
arch/arm/mach-s3c64xx/mach-smartq.c | 1 +
arch/arm/mach-s3c64xx/mach-smdk6410.c | 1 +
arch/arm/mach-s5p64x0/mach-smdk6440.c | 1 +
arch/arm/mach-s5p64x0/mach-smdk6450.c | 1 +
arch/arm/mach-s5pc100/mach-smdkc100.c | 1 +
arch/arm/mach-s5pv210/mach-smdkv210.c | 1 +
arch/arm/mach-shmobile/board-armadillo800eva.c | 1 +
arch/arm/plat-samsung/dev-backlight.c | 5 +
arch/unicore32/kernel/puv3-nb0916.c | 1 +
drivers/video/backlight/pwm_bl.c | 142 ++++++++++++++++-----
include/linux/pwm_backlight.h | 7 +
34 files changed, 162 insertions(+), 64 deletions(-)

--
1.8.4



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