summaryrefslogtreecommitdiffstats
path: root/drivers/video/backlight
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'backlight-for-linus-3.16' of ↵Linus Torvalds2014-06-123-6/+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
| * backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chipTony Lindgren2014-06-051-1/+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>
| * video/backlight: s6e63m0: Fix string type mismatchMasanari Iida2014-05-071-1/+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>
| * video/backlight: LP8788 needs PWMPeter Griffin2014-04-281-1/+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>
| * video/backlight: LP855X needs PWMArnd Bergmann2014-04-281-1/+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>
| * video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICEArnd Bergmann2014-04-281-1/+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>
| * video/backlight: LM3630A needs PWMPeter Griffin2014-04-281-1/+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>
* | Merge tag 'pwm/for-3.16-rc1' of ↵Linus Torvalds2014-06-111-43/+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 ...
| * | pwm-backlight: retrieve configured PWM periodAlexandre Belloni2014-05-211-3/+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>
| * | pwm-backlight: switch to gpiod interfaceAlexandre Courbot2014-05-071-40/+29Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | pwm-backlight: Disable backlight on shutdownThierry Reding2014-05-021-0/+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>
* / backlight: Add backlight device (un)registration notificationHans de Goede2014-05-271-0/+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>
* Merge tag 'backlight-for-linus-3.15' of ↵Linus Torvalds2014-04-103-18/+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
| * backlight: lm3639: Use devm_backlight_device_register()Daniel Jeong2014-04-081-10/+7Star
| | | | | | | | | | | | | | | | 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>
| * backlight: gpio-backlight: Add DT supportDenis Carikli2014-04-081-7/+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>
| * backlight: core: Replace kfree with put_deviceLevente Kurusa2014-04-081-1/+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>
* | backlight: tps65217_bl: remove unnecessary OOM messagesJingoo Han2014-04-041-4/+1Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: platform_lcd: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: lms283gf05: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: lm3533_bl: remove unnecessary OOM messagesJingoo Han2014-04-041-4/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: l4f00242t03: remove unnecessary OOM messagesJingoo Han2014-04-041-4/+1Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: ili9320: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: ili922x: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: hx8357: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: corgi_lcd: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: adp8870: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: adp8860: remove unnecessary OOM messagesJingoo Han2014-04-041-3/+1Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: aat2870: remove unnecessary OOM messagesJingoo Han2014-04-041-2/+0Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: update backlight status when necessaryLiu Ying2014-04-041-2/+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>
* | backlight: update bd state & fb_blank properties when necessaryLiu Ying2014-04-041-5/+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>
* drivers/video/backlight/lcd.c: call put_device if device_register failsLevente Kurusa2014-01-311-1/+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>
* Merge tag 'pwm/for-3.14-rc1' of ↵Linus Torvalds2014-01-271-1/+0Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * backlight: pwm_bl: Remove error message upon devm_kzalloc() failureFabio Estevam2013-12-171-1/+0Star
| | | | | | | | | | | | | | | | 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>
* | backlight: lp8788: remove unnecessary parenthesesJingoo Han2014-01-241-3/+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>
* | backlight: lp855x: remove unnecessary parenthesesJingoo Han2014-01-241-1/+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>
* | backlight: kb3886_bl: fix incorrect placement of __initdata markerJingoo Han2014-01-241-1/+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>
* | backlight: tosa: use devm_lcd_device_register()Jingoo Han2014-01-241-4/+2Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: l4f00242t03: use devm_lcd_device_register()Jingoo Han2014-01-241-4/+2Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: jornada720: use devm_lcd_device_register()Jingoo Han2014-01-241-11/+2Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: tosa: use devm_backlight_device_register()Jingoo Han2014-01-241-4/+3Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: ot200_bl: use devm_backlight_device_register()Jingoo Han2014-01-241-6/+3Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: omap1: use devm_backlight_device_register()Jingoo Han2014-01-241-12/+2Star
| | | | | | | | | | | | | | | | | | | | 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>
* | backlight: hp680_bl: use devm_backlight_device_register()Jingoo Han2014-01-241-4/+2Star
| | | | | | | | | | | | | | | | | | 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>
* | backlight: jornada720: use devm_backlight_device_register()Jingoo Han2014-01-241-12/+3Star
|/ | | | | | | | | | 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>
* Merge tag 'pwm/for-3.13-rc1' of ↵Linus Torvalds2013-11-161-36/+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 ...
| * pwm-backlight: Remove unused variableThierry Reding2013-10-221-1/+1
| | | | | | | | | | | | | | | | I forgot to remove this during earlier cleanup patches and only checked various builds for errors, not warnings. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * pwm_backlight: avoid short blank screen while doing hibernationHuayi Li2013-10-221-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use SIMPLE_DEV_PM_OPS macro will initialize the member "freeze" and "thaw" of pwm_backlight_pm_ops as below, .freeze = suspend_fn, .thaw = resume_fn, then during the process of making hibernation snapshot, screen will be blank at the moment of freezing, and then light at the moment of thawing. this is not the right user experience for suspending to disk. so this patch drops freeze and thaw callback, make the LCD is always lighting before the final shutdown. Signed-off-by: Huayi Li <huayi.li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * pwm-backlight: Fix brightness adjustmentThierry Reding2013-10-181-12/+18
| | | | | | | | | | | | | | | | | | Split adjustment of the brightness (by changing the PWM duty cycle) from the power on sequence. This fixes an issue where the brightness can no longer be updated once the backlight has been enabled. Reported-by: Marc Dietrich <marvin24@gmx.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
| * pwm-backlight: Allow for non-increasing brightness levelsMike Dunn2013-10-161-14/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently the driver assumes that the values specified in the brightness-levels device tree property increase as they are parsed from left to right. But boards that invert the signal between the PWM output and the backlight will need to specify decreasing brightness-levels. This patch removes the assumption that the last element of the array is the maximum value, and instead searches the array for the maximum value and uses that in the duty cycle calculation. Signed-off-by: Mike Dunn <mikedunn@newsguy.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| * pwm-backlight: Add power supply supportThierry Reding2013-10-161-0/+13
| | | | | | | | | | | | | | Backlights require a power supply to work properly. This commit adds a regulator to power up and power down the backlight. Signed-off-by: Thierry Reding <treding@nvidia.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-09-14 12:28:21 +0200