Commit Graph

708 Commits

Author SHA1 Message Date
Jingoo Han e09bceac75 backlight: ld9040: Remove 'else' after a return
Fixed the following checkpatch warning.

  WARNING: else is not generally useful after a break or return

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:25:14 +01:00
Jingoo Han 547f60cee1 backlight: ili922x: Remove 'else' after a return
Fixed the following checkpatch warning.

  WARNING: else is not generally useful after a break or return

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:25:05 +01:00
Jingoo Han 7beeee469a backlight: cr_bllcd: Add blank line after declarations
Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:24:51 +01:00
Jingoo Han ff32c2fa81 backlight: corgi_lcd: Add blank line after declarations
Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:24:40 +01:00
Jingoo Han 5b0d6e1912 backlight: ams369fg06: Remove 'else' after a return
Fixed the following checkpatch warning.

  WARNING: else is not generally useful after a break or return

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:24:28 +01:00
Jingoo Han fe9a86235d backlight: adp8870: Add blank line after declarations
Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:24:16 +01:00
Jingoo Han 5e548f0f55 backlight: adp8860: Add blank line after declarations
Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:24:03 +01:00
Jingoo Han f9bda39d13 backlight: adp5520: Add blank line after declarations
Fixed the following checkpatch warning.

  WARNING: Missing a blank line after declarations

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-29 08:23:50 +01:00
Fabio Estevam 964a1c4e0e backlight: generic_bl: Remove unused function
genericbl_limit_intensity() is exported, but it is never
called anywhere else.

Fix the following sparse warning:

drivers/video/backlight/generic_bl.c:59:6:
  warning: symbol 'genericbl_limit_intensity' was not declared.
  Should it be static?

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-28 14:10:16 +01:00
Peter Griffin 6728f2b109 backlight: Remove .owner field for drivers using module_platform_driver
This patch removes the superflous .owner field for drivers which
use the module_platform_driver or platform_driver_register api,
as this is overriden in __platform_driver_register.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-28 14:09:48 +01:00
Lothar Waßmann 937222c4dd pwm-backlight: Fix bogus request for GPIO#0 when instantiated from DT
commit 257462dbf3 ("pwm-backlight: switch to gpiod interface")
introduced a regression leading to acquiring a bogus GPIO-0 when
configured from DT without an 'enable-gpios' property.
The driver will happily accept the 0 initialized 'enable_gpio' member
of the struct platform_pwm_backlight_data as valid gpio number, and
request this GPIO as enable pin. In case of multiple driver instances,
the second will fail to register with the error message:
pwm-backlight backlight1.23: failed to request GPIO#0: -16

Fix this by setting enable_gpio in the pdata struct to -EINVAL.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-20 13:23:00 +01:00
Linus Torvalds 10c8e05620 ARM: SoC driver changes for 3.17
A handful of driver-related changes. We've had a bunch of them going in through
 other branches as well, so it's only a part of what we really have this release.
 
 Larger pieces are:
 
 * Removal of a now unused PWM driver for atmel
   - This includes AVR32 changes that have been appropriately acked.
 * Performance counter support for the arm CCN interconnect
 * OMAP mailbox driver cleanups and consolidation
 * PCI and SATA PHY drivers for SPEAr 13xx platforms
 * Redefinition (with backwards compatibility!) of PCI DT bindings for Tegra to
   better model regulators/power.
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Merge tag 'drivers-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver changes from Olof Johansson:
 "A handful of driver-related changes.  We've had a bunch of them going
  in through other branches as well, so it's only a part of what we
  really have this release.

  Larger pieces are:

   - Removal of a now unused PWM driver for atmel
     [ This includes AVR32 changes that have been appropriately acked ]
   - Performance counter support for the arm CCN interconnect
   - OMAP mailbox driver cleanups and consolidation
   - PCI and SATA PHY drivers for SPEAr 13xx platforms
   - Redefinition (with backwards compatibility!) of PCI DT bindings for
     Tegra to better model regulators/power"

Note: this merge also fixes up the semantic conflict with the new
calling convention for devm_phy_create(), see commit f0ed817638 ("phy:
core: Let node ptr of PHY point to PHY and not of PHY provider") that
came in through Greg's USB tree.

Semantic merge patch by Stephen Rothwell <sfr@canb.auug.org.au> through
the next tree.

* tag 'drivers-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
  bus: arm-ccn: Fix error handling at event allocation
  mailbox/omap: add a parent structure for every IP instance
  mailbox/omap: remove the private mailbox structure
  mailbox/omap: consolidate OMAP mailbox driver
  mailbox/omap: simplify the fifo assignment by using macros
  mailbox/omap: remove omap_mbox_type_t from mailbox ops
  mailbox/omap: remove OMAP1 mailbox driver
  mailbox/omap: use devm_* interfaces
  bus: ARM CCN: add PERF_EVENTS dependency
  bus: ARM CCN PMU driver
  PCI: spear: Remove spear13xx_pcie_remove()
  PCI: spear: Fix Section mismatch compilation warning for probe()
  ARM: tegra: Remove legacy PCIe power supply properties
  PCI: tegra: Remove deprecated power supply properties
  PCI: tegra: Implement accurate power supply scheme
  ARM: SPEAr13xx: Update defconfigs
  ARM: SPEAr13xx: Add pcie and miphy DT nodes
  ARM: SPEAr13xx: Add bindings and dt node for misc block
  ARM: SPEAr13xx: Fix static mapping table
  phy: Add drivers for PCIe and SATA phy on SPEAr13xx
  ...
2014-08-08 11:34:32 -07:00
Wei Yongjun 87464cdba2 backlight: ipaq_micro: Fix sparse non static symbol warning
Fixes the following sparse warnings:

drivers/video/backlight/ipaq_micro_bl.c:73:24: warning:
 symbol 'micro_backlight_device_driver' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-31 10:31:22 +01:00
Linus Walleij 2188a988bb backlight: Add driver for iPAQ micro backlight
This adds a driver for the backlight controlled by the microcontroller
on the Compaq iPAQ series of handheld computers: h3100, h3600
and h3700.

Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:16:36 +01:00
Alexandre Courbot ff9c5422d8 backlight: pwm-backlight: Use devm_gpiod_get_optional()
Make use of the new devm_gpiod_get_optional() to simplify the probe
code.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-18 08:40:06 +01:00
Lee Jones 1e3b097012 backlight: jornada720: Minimise code duplication and handle errors better
Rickard Strandqvi's ran a code analysis application which found that
jornada_lcd_get_contrast(() and jornada_lcd_set_contrast() contained
some code duplication (calling the same functions during various
code execution paths) and failed to return errors in a consistent
manner.  This patch aims to simplify the code, coercing it into
behaving at a level expected of a driver in the Linux kernel.

Suggested-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-18 08:39:42 +01:00
Alexandre Belloni ec38846ad5 backlight: atmel-pwm-bl: remove obsolete driver
The atmel-pwm-bl driver is now obsolete. It is not used by any mainlined boards
and is replaced by the generic pwm_bl with the pawm-atmel driver using the
generic PWM framework.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-07-09 15:13:34 +02:00
Andrzej Hajda b3de3402e5 backlight: Show brightness even if get_brightness is not implemented
Many implementations of get_brightness operation returns only value
of props.brightness field. This change makes such implementations
unnecessary.

Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-23 13:26:02 +01:00
Andrzej Hajda a5d8e2e73c backlight: Remove trivial get_brightness implementations
Since backlight core returns props.brightness in case get_brightness
is not implemented trivial implementations are not needed anymore.

Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-23 13:24:22 +01:00
Linus Torvalds af76004cf8 This pull-request merely contains some very basic build/run-time bug fixes.
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Merge tag 'backlight-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight fixes from Lee Jones:
 "This merely contains some very basic build/run-time bug fixes"

* tag 'backlight-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chip
  video/backlight: s6e63m0: Fix string type mismatch
  video/backlight: LP8788 needs PWM
  video/backlight: LP855X needs PWM
  video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICE
  video/backlight: LM3630A needs PWM
2014-06-12 12:45:50 -07:00
Linus Torvalds 7f33e7241d pwm: Changes for v3.16-rc1
The majority of these changes are cleanups and fixes across all drivers.
 Redundant error messages are removed and more PWM controllers set the
 .can_sleep flag to signal that they can't be used in atomic context.
 
 Support is added for the Broadcom Kona family of SoCs and the Intel LPSS
 driver can now probe PCI devices in addition to ACPI devices. Upon shut-
 down, the pwm-backlight driver will now power off the backlight. It also
 uses the new descriptor-based GPIO API for more concise GPIO handling.
 
 A large chunk of these changes also converts platforms to use the lookup
 mechanism rather than relying on the global number space to reference
 PWM devices. This is largely in preparation for more unification and
 cleanups in future patches. Eventually it will allow the legacy PWM API
 to be removed.
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Merge tag 'pwm/for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm changes from Thierry Reding:
 "The majority of these changes are cleanups and fixes across all
  drivers.  Redundant error messages are removed and more PWM
  controllers set the .can_sleep flag to signal that they can't be used
  in atomic context.

  Support is added for the Broadcom Kona family of SoCs and the Intel
  LPSS driver can now probe PCI devices in addition to ACPI devices.
  Upon shutdown, the pwm-backlight driver will now power off the
  backlight.  It also uses the new descriptor-based GPIO API for more
  concise GPIO handling.

  A large chunk of these changes also converts platforms to use the
  lookup mechanism rather than relying on the global number space to
  reference PWM devices.  This is largely in preparation for more
  unification and cleanups in future patches.  Eventually it will allow
  the legacy PWM API to be removed"

* tag 'pwm/for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (38 commits)
  pwm: fsl-ftm: set pwm_chip can_sleep flag
  pwm: ab8500: Fix wrong value shift for disable/enable PWM
  pwm: samsung: do not set manual update bit in pwm_samsung_config
  pwm: lp3943: Set pwm_chip can_sleep flag
  pwm: atmel: set pwm_chip can_sleep flag
  pwm: mxs: set pwm_chip can_sleep flag
  pwm: tiehrpwm: inline accessor functions
  pwm: tiehrpwm: don't build PM related functions when not needed
  pwm-backlight: retrieve configured PWM period
  leds: leds-pwm: retrieve configured PWM period
  ARM: pxa: hx4700: use PWM_LOOKUP to initialize struct pwm_lookup
  ARM: shmobile: armadillo: use PWM_LOOKUP to initialize struct pwm_lookup
  ARM: OMAP3: Beagle: use PWM_LOOKUP to initialize struct pwm_lookup
  pwm: modify PWM_LOOKUP to initialize all struct pwm_lookup members
  ARM: pxa: hx4700: initialize all the struct pwm_lookup members
  ARM: OMAP3: Beagle: initialize all the struct pwm_lookup members
  pwm: renesas-tpu: remove unused struct tpu_pwm_platform_data
  ARM: shmobile: armadillo: initialize all struct pwm_lookup members
  pwm: add period and polarity to struct pwm_lookup
  pwm: twl: Really disable twl6030 PWMs
  ...
2014-06-11 14:06:55 -07:00
Tony Lindgren ab1e59b4dc backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chip
If the GPIO for the backlight is on an I2C chip, we currently
get nasty warnings like this during the boot:

WARNING: CPU: 0 PID: 6 at drivers/gpio/gpiolib.c:2364 gpiod_set_raw_value+0x40/0x4c()
Modules linked in:
CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 3.15.0-rc4-12393-gcde9f4e #400
Workqueue: deferwq deferred_probe_work_func
[<c0014cbc>] (unwind_backtrace) from [<c001191c>] (show_stack+0x10/0x14)
[<c001191c>] (show_stack) from [<c0566ae0>] (dump_stack+0x80/0x9c)
[<c0566ae0>] (dump_stack) from [<c003f61c>] (warn_slowpath_common+0x68/0x8c)
[<c003f61c>] (warn_slowpath_common) from [<c003f65c>] (warn_slowpath_null+0x1c/0x24)
[<c003f65c>] (warn_slowpath_null) from [<c02f7e10>] (gpiod_set_raw_value+0x40/0x4c)
[<c02f7e10>] (gpiod_set_raw_value) from [<c0308fbc>] (gpio_backlight_update_status+0x4c/0x74)
[<c0308fbc>] (gpio_backlight_update_status) from [<c030914c>] (gpio_backlight_probe+0x168/0x254)
[<c030914c>] (gpio_backlight_probe) from [<c0378fa8>] (platform_drv_probe+0x18/0x48)
[<c0378fa8>] (platform_drv_probe) from [<c0377c40>] (driver_probe_device+0x10c/0x238)
[<c0377c40>] (driver_probe_device) from [<c0376330>] (bus_for_each_drv+0x44/0x8c)
[<c0376330>] (bus_for_each_drv) from [<c0377afc>] (device_attach+0x74/0x8c)
[<c0377afc>] (device_attach) from [<c03771c4>] (bus_probe_device+0x88/0xb0)
[<c03771c4>] (bus_probe_device) from [<c03775c8>] (deferred_probe_work_func+0x64/0x94)
[<c03775c8>] (deferred_probe_work_func) from [<c00572e8>] (process_one_work+0x1b4/0x4bc)
[<c00572e8>] (process_one_work) from [<c00579d0>] (worker_thread+0x11c/0x398)
[<c00579d0>] (worker_thread) from [<c005dfd8>] (kthread+0xc8/0xe4)
[<c005dfd8>] (kthread) from [<c000e768>] (ret_from_fork+0x14/0x2c)

Fix this by using gpio_set_value_cansleep() as suggested in
drivers/gpio/gpiolib.c:2364. This is what the other backlight drivers
are also doing.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-05 10:00:53 +01:00
Hans de Goede 3cc6919bd6 backlight: Add backlight device (un)registration notification
Some firmware drivers, ie acpi-video want to get themselves out of the
way (in some cases) when their also is a raw backlight device available.

Due to module loading ordering being unknown, acpi-video cannot be certain
that the backlight_device_registered(BACKLIGHT_RAW) it does for this is
the final verdict wrt there being a BACKLIGHT_RAW device.

By adding notification acpi-video can listen for backlight devices showing
up after it has loaded, and unregister its backlight device if desired.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 01:29:01 +02:00
Alexandre Belloni 16fc3352ea pwm-backlight: retrieve configured PWM period
The PWM core is now able to initialize the PWM period from a lookup
table defined by board files. Use it if available and fallback to the
value supplied in pwm_period_ns.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2014-05-21 11:19:45 +02:00
Masanari Iida 39a6ec28bd video/backlight: s6e63m0: Fix string type mismatch
Fix string type mismatch in s6e63m0_sysfs_show_gamma_table().
gamma_table_count is defined as unsigned int.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-05-07 11:12:51 +01:00
Alexandre Courbot 257462dbf3 pwm-backlight: switch to gpiod interface
Switch to the new gpiod interface, which allows to handle GPIO
properties such as active low transparently and removes a whole bunch of
code.

There are still a couple of users of this driver that rely on passing
the enable GPIO number through platform data, so a fallback mechanism
using a GPIO number is still available to avoid breaking them. It will
be removed once current users have switched to the GPIO lookup tables
provided by the gpiod interface.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2014-05-07 10:15:31 +02:00
Thierry Reding 5f33b89624 pwm-backlight: Disable backlight on shutdown
When a device is shut down, make sure to disable the backlight. If it
stays lit, it gives the impression that the device hasn't turned off.
Furthermore keeping the backlight on may consume power, which is not
what users expect when they shut down a device.

Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-05-02 13:25:59 +02:00
Peter Griffin 513199368a video/backlight: LP8788 needs PWM
The LP8788 driver cannot be successfully built if we don't
enable the PWM subsystem. This patch makes that dependency
explicit in Kconfig and prevents broken randconfig builds.

Based on Arnd Bergmann patch but split out into seperate
commits per driver based on feedback.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Acked-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-28 11:22:01 +01:00
Arnd Bergmann 91a57dc134 video/backlight: LP855X needs PWM
The LP855X driver cannot be successfully built if we don't
enable the PWM subsystem. This patch makes that dependency
explicit in Kconfig and prevents broken randconfig builds.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Acked-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-28 11:21:25 +01:00
Arnd Bergmann e6162f3ece video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICE
This fixes a randconfig build error when BACKLIGHT_CLASS_DEVICE
is disabled, by describing the dependency in Kconfig,
as we do for the other drivers in this directory.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-28 11:21:03 +01:00
Peter Griffin 05c4cc0f95 video/backlight: LM3630A needs PWM
The LM3630A driver cannot be successfully built if we don't
enable the PWM subsystem. This patch makes that dependency
explicit in Kconfig and prevents broken randconfig builds.

Based on Arnd Bergmann patch but split out into seperate
commits per driver based on feedback.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-28 11:19:52 +01:00
Linus Torvalds edf2377c47 - Call put_device() instead of kfree() - core
- Add DT support - gpio-backlight
  - Use managed resources - lm3639_bl
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Merge tag 'backlight-for-linus-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight changes from Lee Jones:
 - core: call put_device() instead of kfree()
 - gpio-backlight: add DT support
 - lm3639_bl driver: use managed resources

* tag 'backlight-for-linus-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: lm3639: Use devm_backlight_device_register()
  backlight: gpio-backlight: Add DT support
  backlight: core: Replace kfree with put_device
2014-04-10 08:52:35 -07:00
Daniel Jeong f1740e4cff backlight: lm3639: Use devm_backlight_device_register()
Change to use devm_backlight_device_register() for simple cleanup.

Signed-off-by: Daniel Jeong <gshark.jeong@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-08 13:20:41 +01:00
Denis Carikli 9a6adb339e backlight: gpio-backlight: Add DT support
Signed-off-by: Denis Carikli <denis@eukrea.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-08 13:20:40 +01:00
Levente Kurusa 35762a47c0 backlight: core: Replace kfree with put_device
As per the comments on device_register, we shouldn't call kfree()
right after a device_register() failure. Instead call put_device(),
which in turn will call bl_device_release resulting in a kfree to the
full structure.

Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-08 13:20:39 +01:00
Jingoo Han 3d8e4b401c backlight: tps65217_bl: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:11 -07:00
Jingoo Han c6915be435 backlight: platform_lcd: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:11 -07:00
Jingoo Han e1094f9f74 backlight: lms283gf05: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:11 -07:00
Jingoo Han 44d516f99b backlight: lm3533_bl: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:11 -07:00
Jingoo Han 1bd04820b9 backlight: l4f00242t03: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:11 -07:00
Jingoo Han a82bdcfb3b backlight: ili9320: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han 619e1b491b backlight: ili922x: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han aff70f9ab1 backlight: hx8357: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han 3b20b894d4 backlight: corgi_lcd: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han 0167a95698 backlight: adp8870: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han ba464d0c88 backlight: adp8860: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:10 -07:00
Jingoo Han 78b35cf81e backlight: aat2870: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they duplicate
the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Jinyoung Park <jinyoungp@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:09 -07:00
Liu Ying 8c16f3303c backlight: update backlight status when necessary
We don't have to update a backlight status every time a blanking or
unblanking event comes because the backlight status may have already
been what we want.  Another thought is that one backlight device may be
shared by multiple framebuffers.  We don't hope blanking one of the
framebuffers may turn the backlight off for all the other framebuffers,
since they are likely being active to display something.

This patch makes the backlight status be updated only when the relevant
backlight device's use count changes from zero to one or from one to
zero.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:09 -07:00
Liu Ying a55944ca82 backlight: update bd state & fb_blank properties when necessary
We don't have to update the state and fb_blank properties of a backlight
device every time a blanking or unblanking event comes because they may
have already been what we want.  Another thought is that one backlight
device may be shared by multiple framebuffers.  The backlight driver
should take the backlight device as a resource shared by all the
associated framebuffers.

This patch adds some logic to record each framebuffer's backlight usage
to determine the backlight device use count and whether the two
properties should be updated or not.  To be more specific, only one
unblank operation on a certain blanked framebuffer may increase the
backlight device's use count by one, while one blank operation on a
certain unblanked framebuffer may decrease the use count by one, because
the userspace is likely to unblank an unblanked framebuffer or blank a
blanked framebuffer.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:09 -07:00
Levente Kurusa 54f5968db9 drivers/video/backlight/lcd.c: call put_device if device_register fails
Currently we kfree the container of the device which failed to register.
This is wrong as the last reference is not given up with a put_device
call.  Also, now that we have put_device() callen, we no longer need the
kfree as the new_ld->dev.release function will take care of kfreeing the
associated memory.

Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-30 16:56:54 -08:00
Linus Torvalds 398b60a8de pwm: Changes for v3.14-rc1
The patches for this release cycle include various enhancements (device
 tree support, better compile coverage, ...) for existing drivers. There
 is a new driver for Atmel SoCs.
 
 Various drivers as well as the sysfs support received minor fixes and
 cleanups.
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Merge tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm changes from Thierry Reding:
 "The patches for this release cycle include various enhancements
  (device tree support, better compile coverage, ...) for existing
  drivers.  There is a new driver for Atmel SoCs.

  Various drivers as well as the sysfs support received minor fixes and
  cleanups"

* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: tiecap: Remove duplicate put_sync call
  pwm: tiehrpwm: use dev_err() instead of pr_err()
  pwm: pxa: remove unnecessary space before tabs
  pwm: ep93xx: split module author names
  pwm: use seq_puts() instead of seq_printf()
  pwm: atmel-pwm: Do not unprepare clock after successful registration
  of: Add Atmel PWM controller device tree binding
  pwm: atmel-pwm: Add Atmel PWM controller driver
  backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
  pwm: pca9685: depends on I2C rather than REGMAP_I2C
  pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
  pwm: jz4740: Use devm_clk_get()
  pwm: jz4740: Pass device to clk_get()
  pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
  pwm: pxa: Add device tree support
2014-01-27 08:15:51 -08:00
Jingoo Han 68585c41c9 backlight: lp8788: remove unnecessary parentheses
Remove unnecessary parentheses in order to fix the following checkpatch
error.

  ERROR: return is not a function, parentheses are not required

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:57 -08:00
Jingoo Han 2ce2386072 backlight: lp855x: remove unnecessary parentheses
Remove unnecessary parentheses in order to fix the following checkpatch
error.

  ERROR: return is not a function, parentheses are not required

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:57 -08:00
Jingoo Han 81f5cdc1b2 backlight: kb3886_bl: fix incorrect placement of __initdata marker
The __initdata marker can be virtually anywhere on the line, EXCEPT right
after "struct".  The preferred location is before the "=" sign if there is
one, or before the trailing ";" otherwise.  It also fixes the following
chechpatch warning.

  WARNING: __initdata should be placed after kb3886bl_device_table[]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:57 -08:00
Jingoo Han 0f53449d69 backlight: tosa: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:57 -08:00
Jingoo Han 7dd7807736 backlight: l4f00242t03: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han 964598f239 backlight: jornada720: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler,
and remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han ffb1f6c83b backlight: tosa: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han 443956fdd5 backlight: ot200_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han c76d1022b4 backlight: omap1: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler,
and remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han 0561c1794a backlight: hp680_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Jingoo Han 0ec585d320 backlight: jornada720: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler,
and remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:56 -08:00
Fabio Estevam ca7a97add4 backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
No need to have a specific OOM message, since there is generic MM out of memory
message in place.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-12-17 10:18:25 +01:00
Linus Torvalds 0bde7294e2 pwm: Changes for v3.13-rc1
Mostly bug fixes and clean up. There is a new driver, which is actually
 moving a custom PWM driver from drivers/misc.
 
 The majority of the patches are enhancements to the device tree support
 in the pwm-backlight driver. Backlights can now additionally be powered
 using a regulator and enabled using a GPIO in addition to just the PWM
 input.
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Merge tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm changes from Thierry Reding:
 "Mostly bug fixes and clean up.  There is a new driver, which is
  actually moving a custom PWM driver from drivers/misc.

  The majority of the patches are enhancements to the device tree
  support in the pwm-backlight driver.  Backlights can now additionally
  be powered using a regulator and enabled using a GPIO in addition to
  just the PWM input"

* tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (30 commits)
  Documentation/pwm: Update supported SoC name for pwm-samsung
  pwm: samsung: Fix kernel warning while unexporting a channel
  MAINTAINERS: Move PWM subsystem tree to kernel.org
  Documentation/pwm: Fix trivial typos
  pwm-backlight: Remove unused variable
  pwm_backlight: avoid short blank screen while doing hibernation
  pwm-backlight: Fix brightness adjustment
  pwm: add ep93xx PWM support
  pwm-backlight: Allow for non-increasing brightness levels
  pwm-backlight: Add power supply support
  pwm-backlight: Use new enable_gpio field
  unicore32: Initialize PWM backlight enable_gpio field
  ARM: shmobile: Initialize PWM backlight enable_gpio field
  ARM: SAMSUNG: Initialize PWM backlight enable_gpio field
  ARM: pxa: Initialize PWM backlight enable_gpio field
  ARM: OMAP: Initialize PWM backlight enable_gpio field
  pwm-backlight: Add optional enable GPIO
  pwm-backlight: Track enable state
  pwm-backlight: Refactor backlight power on/off
  pwm-backlight: Improve readability
  ...
2013-11-16 12:21:40 -08:00
Linus Torvalds f0d55cc1a6 fbdev changes for 3.13
Nothing particularly stands out in this pull request. The biggest part of the
 changes are cleanups.
 
 Maybe one fix to mention is the "fb: reorder the lock sequence to fix potential
 dead lock" which hopefully fixes the fb locking issues reported by multiple
 persons.
 
 There are also a few commits that have changes to arch/arm/mach-at91 and
 arch/avr32, which have been acked by the maintainers.
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Merge tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux

Pull fbdev changes from Tomi Valkeinen:
 "Nothing particularly stands out in this pull request.  The biggest
  part of the changes are cleanups.

  Maybe one fix to mention is the "fb: reorder the lock sequence to fix
  potential dead lock" which hopefully fixes the fb locking issues
  reported by multiple persons.

  There are also a few commits that have changes to arch/arm/mach-at91
  and arch/avr32, which have been acked by the maintainers"

* tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (143 commits)
  fb: reorder the lock sequence to fix potential dead lock
  fbdev: shmobile-lcdcfb: Convert to clk_prepare/unprepare
  fbdev: shmobile-hdmi: Convert to clk_prepare/unprepare
  omapdss: Add new panel driver for Topolly td028ttec1 LCD.
  video: exynos_mipi_dsi: Unlock the mutex before returning
  video: da8xx-fb: remove unwanted define
  video: Remove unnecessary semicolons
  simplefb: use write-combined remapping
  simplefb: fix unmapping fb during destruction
  OMAPDSS: connector-dvi: fix releasing i2c_adapter
  OMAPDSS: DSI: fix perf measuring ifdefs
  framebuffer: Use fb_<level>
  framebuffer: Add fb_<level> convenience logging macros
  efifb: prevent null-deref when iterating dmi_list
  fbdev: fix error return code in metronomefb_probe()
  video: xilinxfb: Fix for "Use standard variable name convention"
  OMAPDSS: Fix de_level in videomode_to_omap_video_timings()
  video: xilinxfb: Simplify error path
  video: xilinxfb: Use devm_kzalloc instead of kzalloc
  video: xilinxfb: Use standard variable name convention
  ...
2013-11-14 14:44:20 +09:00
Linus Torvalds f9300eaaac ACPI and power management updates for 3.13-rc1
- New power capping framework and the the Intel Running Average Power
    Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
 
  - Addition of the in-kernel switching feature to the arm_big_little
    cpufreq driver from Viresh Kumar and Nicolas Pitre.
 
  - cpufreq support for iMac G5 from Aaro Koskinen.
 
  - Baytrail processors support for intel_pstate from Dirk Brandewie.
 
  - cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
 
  - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
 
  - ACPI power management support for the I2C and SPI bus types from
    Mika Westerberg and Lv Zheng.
 
  - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
    Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
 
  - cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar,
    Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski,
    Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
 
  - intel_pstate updates from Dirk Brandewie and Adrian Huang.
 
  - ACPICA update to version 20130927 includig fixes and cleanups and
    some reduction of divergences between the ACPICA code in the kernel
    and ACPICA upstream in order to improve the automatic ACPICA patch
    generation process.  From Bob Moore, Lv Zheng, Tomasz Nowicki,
    Naresh Bhat, Bjorn Helgaas, David E Box.
 
  - ACPI IPMI driver fixes and cleanups from Lv Zheng.
 
  - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani,
    Zhang Yanfei, Rafael J Wysocki.
 
  - Conversion of the ACPI AC driver to the platform bus type and
    multiple driver fixes and cleanups related to ACPI from Zhang Rui.
 
  - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
    Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
 
  - Fixes and cleanups and new blacklist entries related to the ACPI
    video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
    Kirill Tkhai.
 
  - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
 
  - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
    Bartlomiej Zolnierkiewicz, Prarit Bhargava.
 
  - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
 
  - Operation Performance Points (OPP) core updates from Nishanth Menon.
 
  - Runtime power management core fix from Rafael J Wysocki and update
    from Ulf Hansson.
 
  - Hibernation fixes from Aaron Lu and Rafael J Wysocki.
 
  - Device suspend/resume lockup detection mechanism from Benoit Goby.
 
  - Removal of unused proc directories created for various ACPI drivers
    from Lan Tianyu.
 
  - ACPI LPSS driver fix and new device IDs for the ACPI platform scan
    handler from Heikki Krogerus and Jarkko Nikula.
 
  - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
 
  - Assorted fixes and cleanups related to ACPI from Andy Shevchenko,
    Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
    Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
    Liu Chuansheng.
 
  - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
    Jean-Christophe Plagniol-Villard.
 
 /
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Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael J Wysocki:

 - New power capping framework and the the Intel Running Average Power
   Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.

 - Addition of the in-kernel switching feature to the arm_big_little
   cpufreq driver from Viresh Kumar and Nicolas Pitre.

 - cpufreq support for iMac G5 from Aaro Koskinen.

 - Baytrail processors support for intel_pstate from Dirk Brandewie.

 - cpufreq support for Midway/ECX-2000 from Mark Langsdorf.

 - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.

 - ACPI power management support for the I2C and SPI bus types from Mika
   Westerberg and Lv Zheng.

 - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
   Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.

 - cpufreq drivers updates (mostly fixes and cleanups) from Viresh
   Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
   Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.

 - intel_pstate updates from Dirk Brandewie and Adrian Huang.

 - ACPICA update to version 20130927 includig fixes and cleanups and
   some reduction of divergences between the ACPICA code in the kernel
   and ACPICA upstream in order to improve the automatic ACPICA patch
   generation process.  From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
   Bhat, Bjorn Helgaas, David E Box.

 - ACPI IPMI driver fixes and cleanups from Lv Zheng.

 - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
   Yanfei, Rafael J Wysocki.

 - Conversion of the ACPI AC driver to the platform bus type and
   multiple driver fixes and cleanups related to ACPI from Zhang Rui.

 - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
   Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.

 - Fixes and cleanups and new blacklist entries related to the ACPI
   video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
   Kirill Tkhai.

 - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.

 - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
   Bartlomiej Zolnierkiewicz, Prarit Bhargava.

 - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.

 - Operation Performance Points (OPP) core updates from Nishanth Menon.

 - Runtime power management core fix from Rafael J Wysocki and update
   from Ulf Hansson.

 - Hibernation fixes from Aaron Lu and Rafael J Wysocki.

 - Device suspend/resume lockup detection mechanism from Benoit Goby.

 - Removal of unused proc directories created for various ACPI drivers
   from Lan Tianyu.

 - ACPI LPSS driver fix and new device IDs for the ACPI platform scan
   handler from Heikki Krogerus and Jarkko Nikula.

 - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.

 - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
   Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
   Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
   Liu Chuansheng.

 - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
   Jean-Christophe Plagniol-Villard.

* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
  cpufreq: conservative: fix requested_freq reduction issue
  ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
  PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
  ACPI / event: remove unneeded NULL pointer check
  Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
  ACPI / video: Quirk initial backlight level 0
  ACPI / video: Fix initial level validity test
  intel_pstate: skip the driver if ACPI has power mgmt option
  PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
  ACPI / hotplug: Do not execute "insert in progress" _OST
  ACPI / hotplug: Carry out PCI root eject directly
  ACPI / hotplug: Merge device hot-removal routines
  ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
  ACPI / hotplug: Simplify device ejection routines
  ACPI / hotplug: Fix handle_root_bridge_removal()
  ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
  ACPI / scan: Start matching drivers after trying scan handlers
  ACPI: Remove acpi_pci_slot_init() headers from internal.h
  ACPI / blacklist: fix name of ThinkPad Edge E530
  PowerCap: Fix build error with option -Werror=format-security
  ...

Conflicts:
	arch/arm/mach-omap2/opp.c
	drivers/Kconfig
	drivers/spi/spi.c
2013-11-14 13:41:48 +09:00
Sachin Kamat c962f7b95c drivers/video/backlight/hx8357.c: remove redundant of_match_ptr
'hx8357_dt_ids' is always compiled in.  Hence of_match_ptr is not needed.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:22 +09:00
Johan Hovold 9b3521ee8f backlight: atmel-pwm-bl: use gpio_request_one
Use devm_gpio_request_one rather than requesting and setting direction
in two calls.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:22 +09:00
Johan Hovold 81b62db56d backlight: atmel-pwm-bl: refactor gpio_on handling
Add helper function to control the gpio_on signal.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold 5ada4550e8 backlight: atmel-pwm-bl: use gpio_is_valid
Use gpio_is_valid rather than open coding the more restrictive != -1
test.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold 7bb8abe6ed backlight: atmel-pwm-bl: remove unused include
Remove unused include of clk.h.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold 9a26a84e3f backlight: atmel-pwm-bl: clean up get_intensity
Clean up get_intensity to increase readability.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold ce726c9738 backlight: atmel-pwm-bl: clean up probe error handling
Clean up probe error handling by checking parameters before any
allocations and removing an obsolete error label.  Also remove unnecessary
reset of private gpio number.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold 5c057e5570 backlight: atmel-pwm-bl: fix module autoload
Add missing module alias which is needed for module autoloading.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold ad5066d4c2 backlight: atmel-pwm-bl: fix gpio polarity in remove
Make sure to honour gpio polarity also at remove so that the backlight is
actually disabled on boards with active-low enable pin.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:21 +09:00
Johan Hovold 185d914425 backlight: atmel-pwm-bl: fix reported brightness
The driver supports 16-bit brightness values, but the value returned
from get_brightness was truncated to eight bits.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Wei Yongjun bcd5b41656 drivers/video/backlight/lm3630a_bl.c: add missing destroy_workqueue() on error in lm3630a_intr_config()
Add the missing destroy_workqueue() before return from
lm3630a_intr_config() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han a18863f5e8 backlight: s6e63m0: use devm_{backlight,lcd}_device_register()
Use devm_backlight_device_register() and devm_lcd_device_register() to
make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han 289a65e46b backlight: cr_bllcd: use devm_{backlight,lcd}_device_register()
Use devm_backlight_device_register() and devm_lcd_device_register() to
make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han 10645a1d18 backlight: corgi_lcd: use devm_{backlight,lcd}_device_register()
Use devm_backlight_device_register() and devm_lcd_device_register() to
make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han 7a78e1b24b backlight: ld9040: use devm_{backlight,lcd}_device_register()
Use devm_backlight_device_register() and devm_lcd_device_register() to
make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han ebc41e43b2 backlight: ams369fg06: use devm_{backlight,lcd}_device_register()
Use devm_backlight_device_register() and devm_lcd_device_register() to
make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han 0524fc5194 backlight: tdo24m: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:20 +09:00
Jingoo Han 1f9ca1eee8 backlight: platform_lcd: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler, and remove
unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han e8796d9f4f backlight: ltv350qv: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han 8358741ab7 backlight: lms501kf03: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han 0a1c55d021 backlight: lms283gf05: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler, and remove
unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han 5690378efa backlight: ili9320: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han a7e9e3ffd7 backlight: ili922x: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han ea5092c890 backlight: hx8357: use devm_lcd_device_register()
Use devm_lcd_device_register() to make cleanup paths simpler, and remove
unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:19 +09:00
Jingoo Han f369e66449 backlight: wm831x_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han 626d09089f backlight: tps65217_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han c423a77121 backlight: pcf50633: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han 75d4baec9b backlight: pandora_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han 18d9dbce46 backlight: max8925_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han e924c2aadf backlight: lv5207lp: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han 6255e8e984 backlight: lp855x: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.  Also,
unnecessary lp855x_backlight_unregister() is removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han e86c709894 backlight: lm3533_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:18 +09:00
Jingoo Han da6537850e backlight: kb3886_bl: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:17 +09:00
Jingoo Han ff47201582 backlight: gpio_backlight: use devm_backlight_device_register()
Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:17 +09:00