[PATCH 2/5] backlight: lp855x: document sysfs attributes

[Aishwarya Pant]

Add documentation for sysfs interface of Texas Instruments lp855x
backlight driver by reading code and looking through git commit logs.

Signed-off-by: Aishwarya Pant <aishpant@xxxxxxxxx>
---
 .../ABI/testing/sysfs-class-backlight-lp855x          | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-lp855x

diff --git a/Documentation/ABI/testing/sysfs-class-backlight-lp855x b/Documentation/ABI/testing/sysfs-class-backlight-lp855x
new file mode 100644
index 000000000000..5b9d38958875
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-backlight-lp855x
@@ -0,0 +1,19 @@
+sysfs interface for Texas Instruments lp855x backlight driver
+------------------------------------------------------------
+
+What:		/sys/class/backlight/<backlight>/chip_id
+Date:		Mar, 2012
+KernelVersion:	v3.10
+Contact:	Milo Kim <milo.kim@xxxxxx>
+Description:
+		(RO) Displays the lp8755x chip id. Possible values are:
+		lp8550, lp8551, lp8552, lp8553, lp8555, lp8556 or lp8557.
+
+
+What:		/sys/class/backlight/<backlight>/bl_ctl_mode
+Date:		Mar, 2012
+KernelVersion:	v3.10
+Contact:	Linux kernel mailing list <linux-kernel@xxxxxxxxxxxxxxx>
+Description:
+		(RO) Displays whether the brightness is controlled by the pwm
+		input("pwm based) or the i2c register("register based").
-- 
2.16.1