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Both adp8860 and adp8870 define some extensions to the backlight class. This causes warnings: Warning: /sys/class/backlight/<backlight>/ambient_light_level is defined 2 times: /sys/class/backlight/<backlight>/ambient_light_level:8 /sys/class/backlight/<backlight>/ambient_light_level:30 Warning: /sys/class/backlight/<backlight>/ambient_light_zone is defined 2 times: /sys/class/backlight/<backlight>/ambient_light_zone:18 /sys/class/backlight/<backlight>/ambient_light_zone:40 As ABI definitions shouldn't be duplicated. Unfortunately, the ABI is dependent on the specific device features. As such, ambient_light_level range is somewhat different among the supported devices. The ambient_light_zone is even worse: the meanings of each preset are different, and there's no ABI to retrieve the supported types nor their meanins. Unfortunately, it is too late to fix it without causing regressions, as this has been used since Kernel v2.6.35. Rewrite those ABI documentation using the current documentation as a reference, and double-checking at the datasheets: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP8870.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/ADP8860.pdf in order to properly document the differences between those two drivers. Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/342195ad5a819d9bcfcebc133c77ab69b4211672.1604042072.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
32 lines
1.4 KiB
Text
32 lines
1.4 KiB
Text
See also /sys/class/backlight/<backlight>/ambient_light_level and
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/sys/class/backlight/<backlight>/ambient_light_zone.
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What: /sys/class/backlight/<backlight>/<ambient light zone>_max
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What: /sys/class/backlight/<backlight>/l1_daylight_max
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What: /sys/class/backlight/<backlight>/l2_bright_max
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What: /sys/class/backlight/<backlight>/l3_office_max
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What: /sys/class/backlight/<backlight>/l4_indoor_max
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What: /sys/class/backlight/<backlight>/l5_dark_max
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Date: May 2011
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KernelVersion: 3.0
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Contact: device-drivers-devel@blackfin.uclinux.org
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Description:
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Control the maximum brightness for <ambient light zone>
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on this <backlight>. Values are between 0 and 127. This file
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will also show the brightness level stored for this
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<ambient light zone>.
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What: /sys/class/backlight/<backlight>/<ambient light zone>_dim
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What: /sys/class/backlight/<backlight>/l2_bright_dim
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What: /sys/class/backlight/<backlight>/l3_office_dim
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What: /sys/class/backlight/<backlight>/l4_indoor_dim
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What: /sys/class/backlight/<backlight>/l5_dark_dim
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Date: May 2011
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KernelVersion: 3.0
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Contact: device-drivers-devel@blackfin.uclinux.org
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Description:
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Control the dim brightness for <ambient light zone>
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on this <backlight>. Values are between 0 and 127, typically
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set to 0. Full off when the backlight is disabled.
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This file will also show the dim brightness level stored for
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this <ambient light zone>.
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