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2014-12-09backlight: lp855x: Add supply regulator to lp855xSean Paul1-0/+2
This patch adds a supply regulator to the lp855x platform data to facilitate powering on/off the 3V rail attached to the controller. Cc: Stéphane Marchesin <marcheu@chromium.org> Cc: Aaron Durbin <adurbin@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Acked-by: Milo Kim <milo.kim@ti.com> Acked-by: Bryan Wu <cooloney@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 Carikli1-0/+16
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>
2013-11-16Merge tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwmLinus Torvalds1-0/+7
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 ...
2013-11-13backlight: lp855x_bl: support new LP8555 deviceMilo Kim1-1/+28
LP8555 is one of the LP855x family devices. This device needs pre_init_device() and post_init_device() driver structure. It's same as LP8557, so the device configuration code is shared with LP8557. Backlight outputs are generated from dual DC-DC boost converters. It's configurable EPROM settings which are defined in the platform data. Driver documentation and device tree bindings are updated. Signed-off-by: Milo Kim <milo.kim@ti.com> 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>
2013-10-16pwm-backlight: Add power supply supportThierry Reding1-0/+2
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>
2013-10-16pwm-backlight: Use new enable_gpio fieldThierry Reding1-0/+5
Make use of the new enable_gpio field and allow it to be set from DT as well. Now that all legacy users of platform data have been converted to initialize this field to an invalid value, it is safe to use the field from the driver. Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-04-29drivers/video/backlight/tps65217_bl.c add default brightness value optionMatus Ujhelyi1-0/+3
Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29Documentation: add missing documentation for tps65217-bl device tree bindingMatus Ujhelyi1-0/+24
Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29backlight: lp855x: add a device tree structureKim, Milo1-0/+41
Enable supporting the DT structure of LP855x family devices. If the platform data is NULL, the driver tries to parse a DT structure. Then, the platform data is copied from the DT. Documentation is added as well. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-14Documentation: Add docs for max8925 dtQing Xu1-0/+10
add docs for dt of max8925-mfd, max8925-backlight, and max8925-battery Signed-off-by: Qing Xu <qingx@marvell.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-10-02mfd: 88pm860x: Device tree supportHaojian Zhuang1-0/+15
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-23pwm-backlight: Add rudimentary device tree supportThierry Reding1-0/+28
This commit adds very basic support for device tree probing. Currently, only a PWM and a list of distinct brightness levels can be specified. Enabling or disabling backlight power via GPIOs is not yet supported. Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
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