This makes it possible to create a set of LEDs for Mellanox systems:
"msx6710", "msx6720", "msb7700", "msn2700", "msx1410", "msn2410",
"msb7800", "msn2740", "msn2100".

Driver obtains LED devices according to system configuration, provided
through system DMI data, like mlxcpld:fan1:green, mlxcpld:fan1:red and
creates devices in form: "devicename:colour:function".

LED setting is controlled through on board CPLD Lattice device.
For setting particular LED off, solid, blink:
echo 0 > /sys/class/leds/mlxcpld\:status\:green/brightness
echo 1 > /sys/class/leds/mlxcpld\:status\:green/brightness
echo timer > /sys/class/leds/mlxcpld\:status\:green/trigger

On module probing all LEDs are set green, on removing - off.

Last setting overwrites previous, f.e. sequence for
changing LED from green - red - green:
echo 1 > /sys/class/leds/mlxcpld\:psu\:green/brightness
echo 1 > /sys/class/leds/mlxcpld\:psu\:red/brightness
echo 1 > /sys/class/leds/mlxcpld\:psu\:green/brightness
Note: LEDs cannot be turned on/off simultaneously.

The Kconfig currently controlling compilation of this code is:
drivers/leds/Kconfig:config LEDS_MLXCPLD

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

This adds a driver for the six PM8058 LEDs, three ordinary LEDs,
two "flash" LEDs and one "keypad" LED.

The "keypad" and "flash" LEDs are not really hard-wired to these
usecases: for example on the APQ8060 Dragonboard, the "keypad"
LED is instead used to drive an IR LED used for the proximity
sensor. The "flash" LEDs are just ordinary high-current LED
drivers.

Cc: linux-arm-msm@vger.kernel.org
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

This is a driver for the Integrated Silicon Solution Inc. LED driver
chips series IS31FL319x. They can drive 1, 3, 6  or up to 9
LEDs.

Each LED is individually controllable in brightness (through pwm)
in 256 steps so that RGB LEDs can show any of ca. 16 Mio colors.

The maximum current of the LEDs can be programmed and limited to
5 .. 40mA through a device tree property.

The chip is connected through I2C and can have one of 4 addresses
in the range 0x64 .. 0x67 depending on how the AD pin is connected. The
address is defined by the reg property as usual.

The chip also has a shutdown input which could be connected to a GPIO,
but this driver uses software shutdown if all LEDs are inactivated.

The chip also has breathing and audio features which are not fully
supported by this driver.

Tested-on: OMAP5 based Pyra handheld prototype.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Andrey Utkin <andrey_utkin@fastmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

The chip can drive 2 sets of RGB leds. Controller can
be controlled via PWM, I2C and audio synchronisation.
This driver uses I2C to communicate with the chip.

Datasheet: http://www.ti.com/lit/gpn/lp3952

Signed-off-by: Tony Makkiel <tony.makkiel@daqri.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

There is only one x86 hardware where the driver leds-ss4200 applies to.
Add kconfig dependency to x86 architecture, fix help text whitespace.

Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

Pull x86 platform driver updates from Darren Hart:
 "Significant refactoring of Dell laptop drivers, modularizing the
  smbios code.  Multiple new platforms added for ideapad, asus, dell,
  and alienware using existing quirks.  A few fixes and cleanups.

  hp-wmi:
   - Remove GPS rfkill support via pre-2009 interface
   - fix unregister order in hp_wmi_rfkill_setup() once again

  ideapad-laptop:
   - Add ideapad Y700 (15) to the no_hw_rfkill DMI list

  fujitsu-laptop:
   - Support radio toggle button

  intel-hid:
   - allocate correct amount of memory for private struct

  platform/x86:
   - Make intel_scu_ipc explicitly non-modular

  intel_pmc_ipc:
   - Avoid pending IPC1 command during legacy suspend
   - Fix GCR register base address and length

  asus-nb-wmi:
   - add wapf=4 quirk for ASUS X75VD

  intel_telemetry_pltdrv:
   - Change verbosity control bits

  dell-rbtn:
   - Add a comment about the XPS 13 9350

  dell-wmi, dell-laptop:
   - depends DMI

  dell-wmi:
   - support Dell Inspiron M5110
   - properly process Dell Instant Launch hotkey
   - enable receiving WMI events on Dell Vostro V131
   - Support new hotkeys on the XPS 13 9350 (Skylake)
   - Clean up hotkey table size check
   - Stop storing pointers to DMI tables

  dell-laptop:
   - move dell_smi_error() to dell-smbios
   - use dell_smbios_find_token() instead of find_token_location()
   - use dell_smbios_find_token() instead of find_token_id()
   - extract SMBIOS-related code to a separate module

  dell-smbios:
   - rename dell_smi_error() to dell_smbios_error()
   - make da_tokens static
   - remove find_token_{id,location}()
   - implement new function for finding DMI table 0xDA tokens
   - make the SMBIOS buffer static
   - return the SMBIOS buffer from dell_smbios_get_buffer()
   - don't return an SMBIOS buffer from dell_smbios_send_request()
   - don't pass an SMBIOS buffer to dell_smbios_send_request()
   - rename dell_send_request() to dell_smbios_send_request()
   - rename release_buffer() to dell_smbios_release_buffer()
   - rename clear_buffer() to dell_smbios_clear_buffer()
   - rename get_buffer() to dell_smbios_get_buffer()

  dell-led:
   - use dell_smbios_send_request() for performing SMBIOS calls
   - use dell_smbios_find_token() for finding mic DMI tokens

  toshiba_acpi:
   - Add a module parameter to disable hotkeys registration
   - Add sysfs entries for the Cooling Method feature
   - Add support for cooling method feature

  Documentation/ABI:
   - Update sysfs-driver-toshiba_acpi file

  thinkpad_acpi:
   - Remove ambiguous logging for "Unsupported brightness interface"

  alienware-wmi:
   - whitespace improvements
   - Add support for two new systems: ASM200 and ASM201.
   - Add support for deep sleep control.
   - Add initial support for alienware graphics amplifier.
   - Add support for new platform: X51-R3
   - Clean up whitespace for ASM100 platform"

* tag 'platform-drivers-x86-v4.6-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (47 commits)
  hp-wmi: Remove GPS rfkill support via pre-2009 interface
  hp-wmi: fix unregister order in hp_wmi_rfkill_setup() once again
  dell-wmi: support Dell Inspiron M5110
  dell-wmi: properly process Dell Instant Launch hotkey
  dell-wmi: enable receiving WMI events on Dell Vostro V131
  dell-smbios: rename dell_smi_error() to dell_smbios_error()
  dell-laptop: move dell_smi_error() to dell-smbios
  ideapad-laptop: Add ideapad Y700 (15) to the no_hw_rfkill DMI list
  fujitsu-laptop: Support radio toggle button
  intel-hid: allocate correct amount of memory for private struct
  platform/x86: Make intel_scu_ipc explicitly non-modular
  intel_pmc_ipc: Avoid pending IPC1 command during legacy suspend
  intel_pmc_ipc: Fix GCR register base address and length
  asus-nb-wmi: add wapf=4 quirk for ASUS X75VD
  intel_telemetry_pltdrv: Change verbosity control bits
  dell-rbtn: Add a comment about the XPS 13 9350
  dell-wmi: Support new hotkeys on the XPS 13 9350 (Skylake)
  dell-wmi: Clean up hotkey table size check
  dell-wmi, dell-laptop: depends DMI
  dell-wmi: Stop storing pointers to DMI tables
  ...

With the advent of dell_smbios_find_token(), dell-led does not need to
perform any DMI walking on its own, but it can rather ask dell-smbios to
look up the DMI tokens it needs for changing the state of the microphone
LED.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

Si-En Technology was acquired by ISSI in 2011, and it appears that
the IS31FL3218/IS31FL3216 are just rebranded SN3218/SN3216 devices.

Add the "si-en,sn3218" and "si-en,sn3216" compatible strings into the
IS31FL32XX driver as aliases for the issi equivalents, and update
binding documentation.

Datasheets:
    IS31FL3218: http://www.issi.com/WW/pdf/31FL3218.pdf
    SN3218:     http://www.si-en.com/uploadpdf/s2011517171720.pdf

    IS31FL3216: http://www.issi.com/WW/pdf/31FL3216.pdf
    SN3216:     http://www.si-en.com/uploadpdf/SN3216201152410148.pdf

Signed-off-by: David Rivshin <drivshin@allworx.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

The IS31FL32xx family of LED controllers are I2C devices with multiple
constant-current channels, each with independent 256-level PWM control.

Datasheets: http://www.issi.com/US/product-analog-fxled-driver.shtml

This has been tested on the IS31FL3236 and IS31FL3216, on an ARM
(TI am335x) platform.

The programming paradigm of these devices is similar in the following
ways:
 - All registers are 8 bit
 - All LED control registers are write-only
 - Each LED channel has a PWM register (0-255)
 - PWM register writes are shadowed until an Update register is poked
 - All have a concept of Software Shutdown, which disables output

However, there are some differences in devices:
 - 3236/3235 have a separate Control register for each LED,
   (3218/3216 pack the enable bits into fewer registers)
 - 3236/3235 have a per-channel current divisor setting
 - 3236/3235 have a Global Control register that can turn off all LEDs
 - 3216 is unique in a number of ways
    - OUT9-OUT16 can be configured as GPIOs instead of LED controls
    - LEDs can be programmed with an 8-frame animation, with
      programmable delay between frames
    - LEDs can be modulated by an input audio signal
    - Max output current can be adjusted from 1/4 to 2x globally
    - Has a Configuration register instead of a Shutdown register

This driver currently only supports the base PWM control function
of these devices. The following features of these devices are not
implemented, although it should be possible to add them in the future:
 - All devices are capable of going into a lower-power "software
   shutdown" mode.
 - The is31fl3236 and is31fl3235 can reduce the max output current
   per-channel with a divisor of 1, 2, 3, or 4.
 - The is31fl3216 can use some LED channels as GPIOs instead.
 - The is31fl3216 can animate LEDs in hardware.
 - The is31fl3216 can modulate LEDs according to an audio input.
 - The is31fl3216 can reduce/increase max output current globally.

Signed-off-by: David Rivshin <drivshin@allworx.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

Ran into this on UML:

drivers/built-in.o: In function `bcm6328_leds_probe':
drivers/leds/leds-bcm6328.c:340: undefined reference to `devm_ioremap_resource'
drivers/built-in.o: In function `bcm6358_leds_probe':
drivers/leds/leds-bcm6358.c:173: undefined reference to `devm_ioremap_resource'
collect2: error: ld returned 1 exit status

devm_ioremap_resource() is defined only when HAS_IOMEM is selected.

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>