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How to configure the Linux kernel/drivers/video/backlight

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Howto configure the Linux kernel / drivers / video / backlight


Backlight & LCD drivers configuration

BACKLIGHT_LCD_SUPPORT

    • (on/off) Backlight & LCD device support
      Enable this to be able to choose the drivers for controlling the backlight and the LCD panel on some platforms, for example on PDAs.


  • Option: BACKLIGHT_CLASS_DEVICE
    • Kernel Versions: 2.6.15.6 ... tristate Lowlevel Backlight controls
    • depends on BACKLIGHT_LCD_SUPPORT
    • default m
      This framework adds support for low-level control of the LCD backlight. This includes support for brightness and power.
      To have support for your specific LCD panel you will have to select the proper drivers which depend on this option.


  • Option: BACKLIGHT_DEVICE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on BACKLIGHT_CLASS_DEVICE
    • default y


  • Option: LCD_CLASS_DEVICE
    • Kernel Versions: 2.6.15.6 ... tristate Lowlevel LCD controls
    • depends on BACKLIGHT_LCD_SUPPORT
    • default m
      This framework adds support for low-level control of LCD. Some framebuffer devices connect to platform-specific LCD modules in order to have a platform-specific way to control the flat panel (contrast and applying power to the LCD (not to the backlight!)).
      To have support for your specific LCD panel you will have to select the proper drivers which depend on this option.


  • Option: LCD_DEVICE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on LCD_CLASS_DEVICE
    • default y


  • Option: BACKLIGHT_CORGI
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) Sharp Corgi Backlight Driver (SL-C7xx Series)
    • depends on BACKLIGHT_DEVICE && PXA_SHARPSL
    • default y
      If you have a Sharp Zaurus SL-C7xx, say y to enable the backlight driver.


Linux Kernel Configuration

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