mirror of https://gitee.com/openkylin/linux.git
37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
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What: /sys/class/backlight/<backlight>/bl_power
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: Richard Purdie <rpurdie@rpsys.net>
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Description:
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Control BACKLIGHT power, values are FB_BLANK_* from fb.h
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- FB_BLANK_UNBLANK (0) : power on.
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- FB_BLANK_POWERDOWN (4) : power off
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Users: HAL
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What: /sys/class/backlight/<backlight>/brightness
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: Richard Purdie <rpurdie@rpsys.net>
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Description:
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Control the brightness for this <backlight>. Values
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are between 0 and max_brightness. This file will also
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show the brightness level stored in the driver, which
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may not be the actual brightness (see actual_brightness).
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Users: HAL
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What: /sys/class/backlight/<backlight>/actual_brightness
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Date: March 2006
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KernelVersion: 2.6.17
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Contact: Richard Purdie <rpurdie@rpsys.net>
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Description:
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Show the actual brightness by querying the hardware.
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Users: HAL
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What: /sys/class/backlight/<backlight>/max_brightness
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: Richard Purdie <rpurdie@rpsys.net>
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Description:
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Maximum brightness for <backlight>.
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Users: HAL
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