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path: root/drivers/video/backlight
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2018-11-20backlight: as3711_bl: Fix Device Tree node leaksJohan Hovold1-6/+6
commit d5318d302e7cf6583ec85a2a8bfbb3a3910ae372 upstream. Two framebuffer device-node names were looked up during probe, but were only used as flags to indicate the presence of two framebuffer device. Drop the unused framebuffer name along with a likewise unused device pointer from the driver data, and update the platform data to pass in booleans instead of the framebuffer strings. This allows us do drop the node references acquired during probe, which would otherwise leak. Note that there are no other in-kernel users of the modified platform-data fields. Fixes: 59eb2b5e57ea ("drivers/video/backlight/as3711_bl.c: add OF support") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2018-11-20backlight: tps65217_bl: Fix Device Tree node lookupJohan Hovold1-2/+2
commit 2b12dfa124dbadf391cb9a616aaa6b056823bf75 upstream. Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. This would only cause trouble if the child node is missing while there is an unrelated node named "backlight" elsewhere in the tree. Fixes: eebfdc17cc6c ("backlight: Add TPS65217 WLED driver") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2018-11-20backlight: max8925_bl: Fix Device Tree node lookupJohan Hovold1-1/+3
commit d1cc0ec3da23e44c23712579515494b374f111c9 upstream. Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent mfd node was also prematurely freed, while the child backlight node was leaked. Fixes: 47ec340cb8e2 ("mfd: max8925: Support dt for backlight") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2018-11-20backlight: as3711_bl: Fix Device Tree node lookupJohan Hovold1-10/+23
commit 4a9c8bb2aca5b5a2a15744333729745dd9903562 upstream. Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent mfd node was also prematurely freed. Fixes: 59eb2b5e57ea ("drivers/video/backlight/as3711_bl.c: add OF support") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2017-11-26backlight: lm3630a: Bump REG_MAX value to 0x50 instead of 0x1FBhushan Shah1-2/+3
commit 06168a64b1ae346816fcd0a0c3ea5276c778408b upstream. In the lm3630a_chip_init we try to write to 0x50 register, which is higher value then the max_register value, this resulted in regmap_write return -EIO. Fix this by bumping REG_MAX value to 0x50. This code was introduced with the chip revision in commit 28e64a68a2ef, however setting filter strength was failing silently because it used unsigned int for storing and comparing the return values. Bug related to signedness was fixed in 2a0c316bf3cc, which made it error out correctly instead of failing silently. I found this issue by using this driver on LGE Nexus 5 (hammerhead). After this commit lm3630a_chip_init succeeds instead of failing with -EIO. Fixes: 28e64a68a2ef ("backlight: lm3630: apply chip revision") Fixes: 2a0c316bf3cc ("drivers/video/backlight/lm3630a_bl.c: fix signedness bug in lm3630a_chip_init()") Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Bhushan Shah <bshah@kde.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2014-06-12Merge tag 'backlight-for-linus-3.16' of ↵Linus Torvalds3-6/+7
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
2014-06-12Merge tag 'pwm/for-3.16-rc1' of ↵Linus Torvalds1-43/+44
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 ...
2014-06-05backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chipTony Lindgren1-1/+2
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>
2014-05-27backlight: Add backlight device (un)registration notificationHans de Goede1-0/+40
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>
2014-05-21pwm-backlight: retrieve configured PWM periodAlexandre Belloni1-3/+6
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>
2014-05-07video/backlight: s6e63m0: Fix string type mismatchMasanari Iida1-1/+1
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>
2014-05-07pwm-backlight: switch to gpiod interfaceAlexandre Courbot1-40/+29
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>
2014-05-02pwm-backlight: Disable backlight on shutdownThierry Reding1-0/+9
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>
2014-04-28video/backlight: LP8788 needs PWMPeter Griffin1-1/+1
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>
2014-04-28video/backlight: LP855X needs PWMArnd Bergmann1-1/+1
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>
2014-04-28video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICEArnd Bergmann1-1/+1
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>
2014-04-28video/backlight: LM3630A needs PWMPeter Griffin1-1/+1
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>
2014-04-10Merge tag 'backlight-for-linus-3.15' of ↵Linus Torvalds3-18/+59
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
2014-04-08backlight: lm3639: Use devm_backlight_device_register()Daniel Jeong1-10/+7
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>
2014-04-08backlight: gpio-backlight: Add DT supportDenis Carikli1-7/+51
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>
2014-04-08backlight: core: Replace kfree with put_deviceLevente Kurusa1-1/+1
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>
2014-04-04backlight: tps65217_bl: remove unnecessary OOM messagesJingoo Han1-4/+1
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>
2014-04-04backlight: platform_lcd: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: lms283gf05: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: lm3533_bl: remove unnecessary OOM messagesJingoo Han1-4/+1
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>
2014-04-04backlight: l4f00242t03: remove unnecessary OOM messagesJingoo Han1-4/+1
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>
2014-04-04backlight: ili9320: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: ili922x: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: hx8357: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: corgi_lcd: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: adp8870: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: adp8860: remove unnecessary OOM messagesJingoo Han1-3/+1
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>
2014-04-04backlight: aat2870: remove unnecessary OOM messagesJingoo Han1-2/+0
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>
2014-04-04backlight: update backlight status when necessaryLiu Ying1-2/+3
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>
2014-04-04backlight: update bd state & fb_blank properties when necessaryLiu Ying1-5/+18
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>
2014-01-31drivers/video/backlight/lcd.c: call put_device if device_register failsLevente Kurusa1-1/+1
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>
2014-01-27Merge tag 'pwm/for-3.14-rc1' of ↵Linus Torvalds1-1/+0
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
2014-01-24backlight: lp8788: remove unnecessary parenthesesJingoo Han1-3/+3
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>
2014-01-24backlight: lp855x: remove unnecessary parenthesesJingoo Han1-1/+1
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>
2014-01-24backlight: kb3886_bl: fix incorrect placement of __initdata markerJingoo Han1-1/+1
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>
2014-01-24backlight: tosa: use devm_lcd_device_register()Jingoo Han1-4/+2
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>
2014-01-24backlight: l4f00242t03: use devm_lcd_device_register()Jingoo Han1-4/+2
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>
2014-01-24backlight: jornada720: use devm_lcd_device_register()Jingoo Han1-11/+2
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>
2014-01-24backlight: tosa: use devm_backlight_device_register()Jingoo Han1-4/+3
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>
2014-01-24backlight: ot200_bl: use devm_backlight_device_register()Jingoo Han1-6/+3
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>
2014-01-24backlight: omap1: use devm_backlight_device_register()Jingoo Han1-12/+2
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>
2014-01-24backlight: hp680_bl: use devm_backlight_device_register()Jingoo Han1-4/+2
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>
2014-01-24backlight: jornada720: use devm_backlight_device_register()Jingoo Han1-12/+3
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>
2013-12-17backlight: pwm_bl: Remove error message upon devm_kzalloc() failureFabio Estevam1-1/+0
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>
2013-11-17Merge tag 'pwm/for-3.13-rc1' of ↵Linus Torvalds1-36/+130
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 ...