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The backlight and lcd subsystems can be notified by the framebuffer layer of blanking events. However, these subsystems, as a whole, can function independently from the framebuffer layer. But in order to enable to the lcd and backlight subsystems, the framebuffer has to be compiled also, effectively sucking in a huge amount of unneeded code. To prevent dependency problems, separate out the framebuffer notification mechanism from the framebuffer layer and permanently link it to the kernel. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
69 lines
1.9 KiB
Plaintext
69 lines
1.9 KiB
Plaintext
#
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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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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_DEVICE
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bool
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depends on BACKLIGHT_CLASS_DEVICE
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default y
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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_DEVICE
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bool
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depends on LCD_CLASS_DEVICE
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default y
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config BACKLIGHT_CORGI
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tristate "Sharp Corgi Backlight Driver (SL Series)"
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depends on BACKLIGHT_DEVICE && PXA_SHARPSL
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default y
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help
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If you have a Sharp Zaurus SL-C7xx, SL-Cxx00 or SL-6000x say y to enable the
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backlight driver.
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config BACKLIGHT_LOCOMO
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tristate "Sharp LOCOMO LCD/Backlight Driver"
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depends on BACKLIGHT_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_HP680
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tristate "HP Jornada 680 Backlight Driver"
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depends on BACKLIGHT_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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