linux-kernel - [PATCH 4/5] backlight: adp5520: document sysfs attributes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <fe0d47871d84f83a927e139928afaf754141b7fe.1516978005.git.aishpant@gmail.com>
Date:   Fri, 26 Jan 2018 20:24:50 +0530
From:   Aishwarya Pant <aishpant@...il.com>
To:     Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Greg KH <gregkh@...uxfoundation.org>,
        Michael Hennerich <michael.hennerich@...log.com>
Cc:     Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 4/5] 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: Aishwarya Pant <aishpant@...il.com>
---
 .../ABI/testing/sysfs-class-backlight-adp5520      | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-adp5520

diff --git a/Documentation/ABI/testing/sysfs-class-backlight-adp5520 b/Documentation/ABI/testing/sysfs-class-backlight-adp5520
new file mode 100644
index 000000000000..34b6ebafa210
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-backlight-adp5520
@@ -0,0 +1,31 @@
+sysfs interface for analog devices adp5520(01) backlight driver
+---------------------------------------------------------------
+
+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@...log.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@...log.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.
-- 
2.16.1