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path: root/include/linux/platform_data/lp855x.h
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2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-5/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Enrico Weigelt <[email protected]> Reviewed-by: Kate Stewart <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2015-08-25backlight: lp855x: Use private data for regulator controlMilo Kim1-2/+0
LP855x backlight device can be enabled by external VDD input. The 'supply' data is used for this purpose. It's kind of private data which runs internally, so there is no reason to expose to the platform data. And devm_regulator_get() is moved from _parse_dt() to _probe(). Regulator consumer(lp855x) can control regulator not only from DT but also from platform data configuration in a source file such like board-*.c. Signed-off-by: Milo Kim <[email protected]> Acked-by: Sean Paul <[email protected]> Acked-by: Jingoo Han <[email protected]> Signed-off-by: Lee Jones <[email protected]>
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 <[email protected]> Cc: Aaron Durbin <[email protected]> Signed-off-by: Sean Paul <[email protected]> Acked-by: Milo Kim <[email protected]> Acked-by: Bryan Wu <[email protected]> Acked-by: Jingoo Han <[email protected]> Signed-off-by: Lee Jones <[email protected]>
2013-11-13backlight: lp855x_bl: support new LP8555 deviceMilo Kim1-0/+19
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 <[email protected]> Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29backlight: lp855x: remove duplicate platform dataKim, Milo1-4/+0
The 'load_new_rom_data' was used for checking whether new ROM data should be updated or not. However, we can decide it with 'size_program' data. If the size is greater than 0, it means updating ROM area is required. Otherwise, the default ROM data will be used. Therefore, this duplicate platform data can be removed. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29backlight: lp855x: fix initial brightness typeKim, Milo1-1/+1
Valid range of the brightness is from 0 to 255, so initial brightness is changed from integer to u8. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29backlight: lp855x: move backlight mode platform dataKim, Milo1-7/+0
The brightness of LP855x devices is controlled by I2C register or PWM input . This mode was selected through the platform data, but it can be chosen by the driver internally without platform data configuration. How to decide the control mode: If the PWM period has specific value, the mode is PWM input. On the other hand, the mode is register-based. This mode selection is done on the _probe(). Move 'mode' from a header file to the driver private data structure, 'lp855 x'. And correlated code was replaced. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29backlight: lp855x: convert a type of device nameKim, Milo1-1/+1
Configurable data, backlight device name is set to constant character type. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-21backlight: lp855x_bl: support new LP8557 deviceKim, Milo1-0/+19
LP8557 is one of LP855x family device, but it has different register map and initialization process. To support this device, device specific configuration is done through the lp855x_device_config structure. Few register definitions are fixed for better readability. BRIGHTNESS_CTRL -> LP855X_BRIGHTNESS_CTRL DEVICE_CTRL -> LP855X_DEVICE_CTRL EEPROM_START -> LP855X_EEPROM_START EEPROM_END -> LP855X_EEPROM_END EPROM_START -> LP8556_EPROM_START EPROM_END -> LP8556_EPROM_END And LP8557 register definitions are added. New register function, lp855x_update_bit() is added. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Acked-by: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-12-17drivers/video/backlight/lp855x_bl.c: use generic PWM functionsKim, Milo1-7/+2
The LP855x family devices support the PWM input for the backlight control. Period of the PWM is configurable in the platform side. Platform specific functions are unnecessary anymore because generic PWM functions are used inside the driver. (PWM input mode) To set the brightness, new lp855x_pwm_ctrl() is used. If a PWM device is not allocated, devm_pwm_get() is called. The PWM consumer name is from the chip name such as 'lp8550' and 'lp8556'. To get the brightness value, no additional handling is required. Just the value of 'props.brightness' is returned. If the PWM driver is not ready while initializing the LP855x driver, it's OK. The PWM device can be retrieved later, when the brightness value is changed. Documentation is updated with an example. [[email protected]: coding-style simplification, per Thierry] Signed-off-by: Milo(Woogyom) Kim <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Bryan Wu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-10-06backlight: lp855x: add FAST bit description for LP8556Kim, Milo1-0/+2
LP8556 backlight driver supports fast refresh mode when exiting the low power mode. This bit can be configurable in the platform side. Signed-off-by: Milo(Woogyom) Kim <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Bryan Wu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-07-30backlight: move lp855x header into platform_data directoryKim, Milo1-0/+125
The lp855x header is used only in the platform side, so it can be moved into platform_data directory Signed-off-by: Milo(Woogyom) Kim <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Bryan Wu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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