[PATCH 00/10] pwm-backlight: Add GPIO and power supply support

[Thierry Reding]

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