The NXP PCA9685 supports 16 channels/leds using a 12-bit PWM (4095
levels of brightness)
This driver supports configuration using platform_data.

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

Pull led updates from Bryan Wu:
 "Sorry for the late pull request, since I'm just back from vacation.

  LED subsystem updates for 3.12:
   - pca9633 driver DT supporting and pca9634 chip supporting
   - restore legacy device attributes for lp5521
   - other fixing and updates"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (28 commits)
  leds: wm831x-status: Request a REG resource
  leds: trigger: ledtrig-backlight: Fix invalid memory access in fb_event notification callback
  leds-pca963x: Fix device tree parsing
  leds-pca9633: Rename to leds-pca963x
  leds-pca9633: Add mutex to the ledout register
  leds-pca9633: Unique naming of the LEDs
  leds-pca9633: Add support for PCA9634
  leds: lp5562: use LP55xx common macros for device attributes
  Documentation: leds-lp5521,lp5523: update device attribute information
  leds: lp5523: remove unnecessary writing commands
  leds: lp5523: restore legacy device attributes
  leds: lp5523: LED MUX configuration on initializing
  leds: lp5523: make separate API for loading engine
  leds: lp5521: remove unnecessary writing commands
  leds: lp5521: restore legacy device attributes
  leds: lp55xx: add common macros for device attributes
  leds: lp55xx: add common data structure for program
  Documentation: leds: Fix a typo
  leds: ss4200: Fix incorrect placement of __initdata
  leds: clevo-mail: Fix incorrect placement of __initdata
  ...

The driver now supports the chips pca9633 and pca9634, therefore we
rename the files to more generic and meaningul names

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

Add support for PCA9634 chip, which belongs to the same family as the
9633 but with support for 8 outputs instead of 4.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

With the DT conversion, the board Kconfig symbols MACH_ are going to be
removed. In order to prepare this removal, this patch replaces alls the
machines dependencies for leds-netxbig by ARCH_KIRKWOOD.

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

With the DT conversion, the board Kconfig symbols MACH_ are going to be
removed. In order to prepare this removal, this patch replaces alls the
machines dependencies for leds-ns2 by ARCH_KIRKWOOD.

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

LP8501 can drive up to 9 channels like LP5523.
LEDs can be controlled directly via the I2C and programmable engines are
supported.

LP55xx common driver
 LP8501 is one of LP55xx family device, so LP55xx common code are used.
 Chip specific data is defined in the structure, 'lp55xx_device_config'.

Differences between LP8501 and LP5523
 Different register layout for LED output control and others.
 LP8501 specific feature for separate output power selection.
 LP8501 doesn't support external clock detection.
 Different programming engine data.

LP8501 specific feature - output power selection
 Output channels are selected by power selection - Vout or Vdd.
 Separate power for VDD1-6 and VDD7-9 are available.
 It is configurable in the platform data.
 To support this feature, LP55xx DT structure and header are changed.
 Device tree binding is updated as well.

LED pattern data
 Example pattern data is updated in the driver documentation.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

The driver is superseded by the generic pwm-renesas-tpu driver used with
leds-pwm.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Tested-by: Philippe Retornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

Pull removal of GENERIC_GPIO from Grant Likely:
 "GENERIC_GPIO now synonymous with GPIOLIB.  There are no longer any
  valid cases for enableing GENERIC_GPIO without GPIOLIB, even though it
  is possible to do so which has been causing confusion and breakage.
  This branch does the work to completely eliminate GENERIC_GPIO."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux:
  gpio: update gpio Chinese documentation
  Remove GENERIC_GPIO config option
  Convert selectors of GENERIC_GPIO to GPIOLIB
  blackfin: force use of gpiolib
  m68k: coldfire: use gpiolib
  mips: pnx833x: remove requirement for GENERIC_GPIO
  openrisc: default GENERIC_GPIO to false
  avr32: default GENERIC_GPIO to false
  xtensa: remove explicit selection of GENERIC_GPIO
  sh: replace CONFIG_GENERIC_GPIO by CONFIG_GPIOLIB
  powerpc: remove redundant GENERIC_GPIO selection
  unicore32: default GENERIC_GPIO to false
  unicore32: remove unneeded select GENERIC_GPIO
  arm: plat-orion: use GPIO driver on CONFIG_GPIOLIB
  arm: remove redundant GENERIC_GPIO selection
  mips: alchemy: require gpiolib
  mips: txx9: change GENERIC_GPIO to GPIOLIB
  mips: loongson: use GPIO driver on CONFIG_GPIOLIB
  mips: remove redundant GENERIC_GPIO select