[PATCH v2 00/12] LED core improvements

[Jacek Anaszewski <j.anaszewski@samsung.com>]

This is a second version of the patch set preparing the
ground for removing work queues from LED class drivers.
Andrew and Sakari - thanks for a review.

================
Changes from v1:
================
- removed useless use of else in led_set_brightness()
- switched to removing error code instead of emitting
  warning from led_set_brightness_sync() in case software
  blink fallback is enabled
- moved __led_set_brightness() contents to set_brightness_delayed()
- removed description of internal led_set_brightness_nosleep() from
  led-class.txt documentation, and modified description of
  led_set_brightness() and led_set_brightness_sync()
- renamed LED_BLINK_CHANGE flag to more meaningful
  LED_BLINK_BRIGHTNESS_CHANGE
- Fixed stylistic issues in a few comments
- Adopted old brightness_set_sync() op description to
  a new brightness_set_blocking() op
- Fixed led_set_brightness_nosleep to avoid scheduling
  spurious set_brightness_work
- made LED core using EXPORT_SYMBOL_GPL consistently
- switched v4l2-flash-led-class wrapper to using
  led_set_brightness_sync API for setting torch brightness
- merged with patch set
  "LED flash: Set brightness in a sync way on demand"


======================
Original cover letter:
======================

This patch set prepares the ground for removing work queues
from LED class drivers, and is a follow up of the patch set [1].
LED core modifications have been reorganized to make them
more clear and easier to review. The patch set is reduced
in comparison to it its predecessor, to expose the modifications
indispensable for the LED core to gain the capability of handling
brightness_set_blocking ops, that is without work queues.

Thanks,
Jacek Anaszewski

[1] https://lkml.org/lkml/2015/8/20/426

Jacek Anaszewski (12):
  leds: core: Use EXPORT_SYMBOL_GPL consistently
  leds: core: Move LED core callbacks out of led-class.c
  leds: core: Add two new LED_BLINK_ flags
  leds: Rename brightness_set_sync op to brightness_set_blocking
  leds: core: Add an internal led_set_brightness_nosleep function
  leds: core: Use set_brightness_work for the blocking op
  leds: core: Drivers shouldn't enforce SYNC/ASYNC brightness setting
  Documentation: leds: Add description of brightness setting API
  leds: max77693: Remove work queue
  leds: aat1290: Remove work queue
  leds: ktd2692: Remove work queue
  media: flash: use led_set_brightness_sync for torch brightness

 Documentation/leds/leds-class.txt              |   13 ++
 drivers/leds/led-class-flash.c                 |    6 +-
 drivers/leds/led-class.c                       |   71 +---------
 drivers/leds/led-core.c                        |  166 +++++++++++++++++++++---
 drivers/leds/leds-aat1290.c                    |   50 ++-----
 drivers/leds/leds-ktd2692.c                    |   41 +-----
 drivers/leds/leds-max77693.c                   |   57 ++------
 drivers/leds/leds.h                            |   26 +---
 drivers/leds/trigger/ledtrig-backlight.c       |    8 +-
 drivers/leds/trigger/ledtrig-default-on.c      |    2 +-
 drivers/leds/trigger/ledtrig-gpio.c            |    6 +-
 drivers/leds/trigger/ledtrig-heartbeat.c       |    4 +-
 drivers/leds/trigger/ledtrig-oneshot.c         |    4 +-
 drivers/leds/trigger/ledtrig-transient.c       |    8 +-
 drivers/media/v4l2-core/v4l2-flash-led-class.c |    8 +-
 include/linux/leds.h                           |   27 +++-
 16 files changed, 233 insertions(+), 264 deletions(-)

-- 
1.7.9.5