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

Aishwarya Pant
2018-01-26T14:53:10Z

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@gmail.com>
---
.../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@ti.com>
+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@vger.kernel.org>
+Description:
+ (RO) Displays whether the brightness is controlled by the pwm
+ input("pwm based) or the i2c register("register based").
--
2.16.1