[PATCH v3 0/16] backlight updates

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v3:
 - Dropped video patch that was reviewd and thus applied
 - Updated kernel-doc so all fields now have a short intro
 - Improved readability in a lot of places, thanks to review
   feedback from Daniel - thanks!
 - Added better intro to backlight
 - Added acks

   Several other smaller changes documented in the
   patches.
   I left out patches to make functions static as
   there are dependencies to drm-misc-next for these.
   When this is landed I have a pile of follow-up patches waiting,
   mostly introducing backlight_is_blank() all over.

v2:
  - Dropped drm patches that was reviewed and thus applied (Thanks Tomi)
  - Updated backligth_is_blank() based on Daniel's feedback
  - Dropped EXPORT_SYMBOL that was no longer relevant
  - Reordered patches, so patches with no external
    dependencies comes first
  - Updated the description that follows.

This following series touches a lot of backlight things.

Starts with a small refactoring in backligth.c to remove some indents.
This increases the readability and no functional changes.

Then a new helper backlight_is_blank() is added.
This helper will simplify the implementation of update_status()
in almost all backlight drivers.

Then while surfing the code I missed some documentation.
So I got a bit carried away and updated the documentation
for the backlight core and added it to kernel-doc.
The documentation express my current understanding.
Everything from spelling errors to outright wrong content
shall be anticipated - so please review!
We are all best helped if the documentation is correct
and up-to-date and it is readable.

In this process I identified that the backlight_bl driver
was no longer in use - so drop it.

Everything builds, but so far no run-time testing.

	Sam

Sam Ravnborg (13):
      backlight: refactor fb_notifier_callback()
      backlight: add backlight_is_blank()
      backlight: improve backlight_ops documentation
      backlight: improve backlight_properties documentation
      backlight: improve backlight_device documentation
      backlight: document inline functions in backlight.h
      backlight: document enums in backlight.h
      backlight: remove the unused backlight_bl driver
      backlight: drop extern from prototypes
      backlight: add overview and update existing doc
      backlight: wire up kernel-doc documentation
      backlight: as3711_bl: introduce backlight_is_blank()
      backlight: use backlight_is_blank() in all backlight drivers

 Documentation/gpu/backlight.rst          |  12 +
 Documentation/gpu/index.rst              |   1 +
 drivers/video/backlight/88pm860x_bl.c    |   8 +-
 drivers/video/backlight/Kconfig          |   8 -
 drivers/video/backlight/Makefile         |   1 -
 drivers/video/backlight/adp5520_bl.c     |   5 +-
 drivers/video/backlight/adp8860_bl.c     |   5 +-
 drivers/video/backlight/adp8870_bl.c     |   5 +-
 drivers/video/backlight/as3711_bl.c      |   8 +-
 drivers/video/backlight/backlight.c      | 174 +++++++++-----
 drivers/video/backlight/bd6107.c         |   4 +-
 drivers/video/backlight/corgi_lcd.c      |   5 +-
 drivers/video/backlight/cr_bllcd.c       |  22 +-
 drivers/video/backlight/da903x_bl.c      |   8 +-
 drivers/video/backlight/ep93xx_bl.c      |   3 +-
 drivers/video/backlight/generic_bl.c     | 110 ---------
 drivers/video/backlight/gpio_backlight.c |   4 +-
 drivers/video/backlight/hp680_bl.c       |   4 +-
 drivers/video/backlight/jornada720_bl.c  |   2 +-
 drivers/video/backlight/kb3886_bl.c      |   4 +-
 drivers/video/backlight/led_bl.c         |   4 +-
 drivers/video/backlight/lm3533_bl.c      |   4 +-
 drivers/video/backlight/locomolcd.c      |   4 +-
 drivers/video/backlight/lv5207lp.c       |   4 +-
 drivers/video/backlight/max8925_bl.c     |   8 +-
 drivers/video/backlight/pwm_bl.c         |   4 +-
 drivers/video/backlight/qcom-wled.c      |   4 +-
 drivers/video/backlight/tps65217_bl.c    |   4 +-
 drivers/video/backlight/wm831x_bl.c      |   8 +-
 include/linux/backlight.h                | 374 +++++++++++++++++++++++++------
 30 files changed, 465 insertions(+), 346 deletions(-)


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