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Commit 9671a7f1 authored by Aishwarya Pant's avatar Aishwarya Pant Committed by Jonathan Corbet
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backlight: adp5520: document sysfs attributes 



Add documentation for sysfs interface of adp5520/adp5501 analog devices
backlight driver by reading code and looking through git commit logs.

Signed-off-by: default avatarAishwarya Pant <aishpant@gmail.com>
Acked-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Acked-by: default avatarDaniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 24f4c6c8

Documentation/ABI/testing/sysfs-class-backlight-adp5520

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sysfs interface for analog devices adp5520(01) backlight driver

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The backlight brightness control operates at three different levels for the

adp5520 and adp5501 devices: daylight (level 1), office (level 2) and dark

(level 3). By default the brightness operates at the daylight brightness level.



What:		/sys/class/backlight/<backlight>/daylight_max

What:		/sys/class/backlight/<backlight>/office_max

What:		/sys/class/backlight/<backlight>/dark_max

Date:		Sep, 2009

KernelVersion:	v2.6.32

Contact:	Michael Hennerich <michael.hennerich@analog.com>

Description:

		(RW) Maximum current setting for the backlight when brightness

		is at one of the three levels (daylight, office or dark). This

		is an input code between 0 and 127, which is transformed to a

		value between 0 mA and 30 mA using linear or non-linear

		algorithms.



What:		/sys/class/backlight/<backlight>/daylight_dim

What:		/sys/class/backlight/<backlight>/office_dim

What:		/sys/class/backlight/<backlight>/dark_dim

Date:		Sep, 2009

KernelVersion:	v2.6.32

Contact:	Michael Hennerich <michael.hennerich@analog.com>

Description:

		(RW) Dim current setting for the backlight when brightness is at

		one of the three levels (daylight, office or dark). This is an

		input code between 0 and 127, which is transformed to a value

		between 0 mA and 30 mA using linear or non-linear algorithms.