3e074058d7
This patch adds a platform driver using the ATMEL PWM driver to control a backlight which requires a PWM signal and optional GPIO signal for discrete on/off signal. It has been tested on Favr-32 board from EarthLCD. The driver is configurable by supplying a struct with the platform data. See the include/linux/atmel-pwm-bl.h for details. The board code for Favr-32 will be submitted to the AVR32 kernel list. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
157 lines
4.8 KiB
Text
157 lines
4.8 KiB
Text
#
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# Backlight & LCD drivers configuration
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#
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menuconfig BACKLIGHT_LCD_SUPPORT
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bool "Backlight & LCD device support"
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help
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Enable this to be able to choose the drivers for controlling the
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backlight and the LCD panel on some platforms, for example on PDAs.
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#
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# LCD
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#
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config LCD_CLASS_DEVICE
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tristate "Lowlevel LCD controls"
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depends on BACKLIGHT_LCD_SUPPORT
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default m
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help
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This framework adds support for low-level control of LCD.
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Some framebuffer devices connect to platform-specific LCD modules
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in order to have a platform-specific way to control the flat panel
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(contrast and applying power to the LCD (not to the backlight!)).
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To have support for your specific LCD panel you will have to
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select the proper drivers which depend on this option.
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config LCD_LTV350QV
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tristate "Samsung LTV350QV LCD Panel"
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depends on LCD_CLASS_DEVICE && SPI_MASTER
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default n
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help
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If you have a Samsung LTV350QV LCD panel, say y to include a
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power control driver for it. The panel starts up in power
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off state, so you need this driver in order to see any
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output.
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The LTV350QV panel is present on all ATSTK1000 boards.
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config LCD_ILI9320
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tristate
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depends on LCD_CLASS_DEVICE && BACKLIGHT_LCD_SUPPORT
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default n
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help
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If you have a panel based on the ILI9320 controller chip
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then say y to include a power driver for it.
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config LCD_VGG2432A4
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tristate "VGG2432A4 LCM device support"
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depends on BACKLIGHT_LCD_SUPPORT && LCD_CLASS_DEVICE && SPI_MASTER
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select LCD_ILI9320
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default n
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help
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If you have a VGG2432A4 panel based on the ILI9320 controller chip
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then say y to include a power driver for it.
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config LCD_PLATFORM
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tristate "Platform LCD controls"
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depends on LCD_CLASS_DEVICE
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help
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This driver provides a platform-device registered LCD power
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control interface.
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#
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# Backlight
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#
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config BACKLIGHT_CLASS_DEVICE
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tristate "Lowlevel Backlight controls"
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depends on BACKLIGHT_LCD_SUPPORT
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default m
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help
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This framework adds support for low-level control of the LCD
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backlight. This includes support for brightness and power.
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To have support for your specific LCD panel you will have to
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select the proper drivers which depend on this option.
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config BACKLIGHT_ATMEL_LCDC
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bool "Atmel LCDC Contrast-as-Backlight control"
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depends on BACKLIGHT_CLASS_DEVICE && FB_ATMEL
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default y if MACH_SAM9261EK || MACH_SAM9263EK
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help
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This provides a backlight control internal to the Atmel LCDC
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driver. If the LCD "contrast control" on your board is wired
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so it controls the backlight brightness, select this option to
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export this as a PWM-based backlight control.
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If in doubt, it's safe to enable this option; it doesn't kick
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in unless the board's description says it's wired that way.
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config BACKLIGHT_ATMEL_PWM
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tristate "Atmel PWM backlight control"
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depends on BACKLIGHT_CLASS_DEVICE && ATMEL_PWM
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default n
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help
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Say Y here if you want to use the PWM peripheral in Atmel AT91 and
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AVR32 devices. This driver will need additional platform data to know
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which PWM instance to use and how to configure it.
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To compile this driver as a module, choose M here: the module will be
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called atmel-pwm-bl.
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config BACKLIGHT_CORGI
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tristate "Generic (aka Sharp Corgi) Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE
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default n
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help
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Say y to enable the generic platform backlight driver previously
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known as the Corgi backlight driver. If you have a Sharp Zaurus
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SL-C7xx, SL-Cxx00 or SL-6000x say y. Most users can say n.
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config BACKLIGHT_LOCOMO
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tristate "Sharp LOCOMO LCD/Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && SHARP_LOCOMO
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default y
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help
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If you have a Sharp Zaurus SL-5500 (Collie) or SL-5600 (Poodle) say y to
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enable the LCD/backlight driver.
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config BACKLIGHT_OMAP1
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tristate "OMAP1 PWL-based LCD Backlight"
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depends on BACKLIGHT_CLASS_DEVICE && ARCH_OMAP1
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default y
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help
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This driver controls the LCD backlight level and power for
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the PWL module of OMAP1 processors. Say Y if your board
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uses this hardware.
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config BACKLIGHT_HP680
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tristate "HP Jornada 680 Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && SH_HP6XX
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default y
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help
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If you have a HP Jornada 680, say y to enable the
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backlight driver.
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config BACKLIGHT_PROGEAR
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tristate "Frontpath ProGear Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && PCI && X86
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default n
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help
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If you have a Frontpath ProGear say Y to enable the
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backlight driver.
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config BACKLIGHT_CARILLO_RANCH
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tristate "Intel Carillo Ranch Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && LCD_CLASS_DEVICE && PCI && X86 && FB_LE80578
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default n
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help
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If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
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backlight driver.
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config BACKLIGHT_PWM
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tristate "Generic PWM based Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && HAVE_PWM
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help
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If you have a LCD backlight adjustable by PWM, say Y to enable
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this driver.
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