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-rw-r--r--Documentation/leds/leds-lp55xx.txt30
1 files changed, 27 insertions, 3 deletions
diff --git a/Documentation/leds/leds-lp55xx.txt b/Documentation/leds/leds-lp55xx.txt
index eec8fa2ffe4e..82713ff92eb3 100644
--- a/Documentation/leds/leds-lp55xx.txt
+++ b/Documentation/leds/leds-lp55xx.txt
@@ -1,11 +1,11 @@
-LP5521/LP5523/LP55231 Common Driver
-===================================
+LP5521/LP5523/LP55231/LP5562/LP8501 Common Driver
+=================================================
Authors: Milo(Woogyom) Kim <milo.kim@ti.com>
Description
-----------
-LP5521, LP5523/55231 and LP5562 have common features as below.
+LP5521, LP5523/55231, LP5562 and LP8501 have common features as below.
Register access via the I2C
Device initialization/deinitialization
@@ -109,6 +109,30 @@ As soon as 'loading' is set to 0, registered callback is called.
Inside the callback, the selected engine is loaded and memory is updated.
To run programmed pattern, 'run_engine' attribute should be enabled.
+The pattern sqeuence of LP8501 is same as LP5523.
+However pattern data is specific.
+Ex 1) Engine 1 is used
+echo 1 > /sys/bus/i2c/devices/xxxx/select_engine
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
+
+Ex 2) Engine 2 and 3 are used at the same time
+echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
+sleep 1
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+sleep 1
+echo 3 > /sys/bus/i2c/devices/xxxx/select_engine
+sleep 1
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0340ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+sleep 1
+echo 1 > /sys/class/leds/d1/device/run_engine
+
( 'run_engine' and 'firmware_cb' )
The sequence of running the program data is common.
But each device has own specific register addresses for commands.