[PATCH v2 0/4] leds: Add driver for the ISSI IS31FL32xx family of LED controllers

[David Rivshin (Allworx)]

From: David Rivshin <drivshin@xxxxxxxxxxx>

This series adds support for the ISSI IS31FL32xx family of I2C LED
controllers. Since the IS31FL3218/3216 are actually the same devices as
the SN3218/3216, adds their compatible strings as aliases.

As requested, this series is based on the current linux-leds/for-next, minus
patch 2 and 3 of the standalone sn3218 driver. As such, it will not directly
apply to the current linux-next without minor merges in the leds Kconfig
and Makefile. This will apply cleanly to v4.5-rc7, albeit with a compiler
warning in patch 3 (which is fixed elsewhere in linux-next).

Changes from v1 [1]:
 - swapped node name and label in binding example
 - removed line stating filename from file header comment of is31fl32xx.c
 - dropped #includes for err.h and of_platform.h
 - added #includes for device.h, of.h, and of_device.h
 - patch 4 no longer removes leds-sn3218, as that will be done separately
 - patch 4 commit log no longer references leds-sn3218 driver
 - added Rob's acks for patches 1, 2, and 4
 - added Tested-By from Stefan (for SN3218)

Changes from RFC [2]:
 - Removed max-brightness DT property.
 - Added #address-cells and #size-cells properties to the example DT.
 - Refer to these devices as "LED controllers" in Kconfig.
 - Removed redundant last sentence from Kconfig entry
 - Removed unnecessary debug code.
 - Do not set led_classdev.brightness to 0 explicitly, as it is
   already initialized to 0 by devm_kzalloc().
 - Used of_property_read_string() instead of of_get_property().
 - Fail immediately on DT parsing error in a child node, rather than
   continuing on with the non-faulty ones.
 - Added additional comments for some things that might be non-obvious.
 - Added constants for the location of the SSD bit in the SHUTDOWN
   register, and the 3216's CONFIG register.
 - Added special sw_shutdown_func for the 3216 device, as that bit
   is in a different register, at a different position, and has reverse
   polarity compared to all the other devices.
 - Refactored is31fl32xx_init_regs() to separate out some logic into
   is31fl32xx_reset_regs() and is31fl32xx_software_shutdown().
 - Added 4th patch to replace the now-redundant leds-sn3218.

[1] https://lkml.org/lkml/2016/3/2/1004
[2] http://www.spinics.net/lists/linux-leds/msg05564.html

David Rivshin (4):
  DT: Add vendor prefix for Integrated Silicon Solutions Inc.
  DT: leds: Add binding for the ISSI IS31FL32xx family of LED
    controllers
  leds: Add driver for the ISSI IS31FL32xx family of LED controllers
  leds: Add SN3218 and SN3216 support to the IS31FL32XX driver

 .../devicetree/bindings/leds/leds-is31fl32xx.txt   |  52 +++
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 drivers/leds/Kconfig                               |   8 +
 drivers/leds/Makefile                              |   1 +
 drivers/leds/leds-is31fl32xx.c                     | 508 +++++++++++++++++++++
 5 files changed, 570 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-is31fl32xx.txt
 create mode 100644 drivers/leds/leds-is31fl32xx.c

-- 
2.5.0