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authorMilo Kim <milo.kim@ti.com>2013-08-08 14:11:29 +0900
committerBryan Wu <cooloney@gmail.com>2013-08-26 17:22:13 -0700
commit863724a696e1a96b07c1bd0eb03cf08f10a714ba (patch)
tree0a4ad79c55d9262b9937e2aaa544bd02302a3e26 /Documentation/leds
parent2f733cad3699c6fd1cc3350ab43c9f684b976e73 (diff)
downloadkernel-863724a696e1a96b07c1bd0eb03cf08f10a714ba.tar.gz
Documentation: leds-lp5521,lp5523: update device attribute information
Now, all legacy application interfaces are restored. Each driver documentation is updated. Cc: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'Documentation/leds')
-rw-r--r--Documentation/leds/leds-lp5521.txt20
-rw-r--r--Documentation/leds/leds-lp5523.txt21
2 files changed, 39 insertions, 2 deletions
diff --git a/Documentation/leds/leds-lp5521.txt b/Documentation/leds/leds-lp5521.txt
index 79e4c2e6e5e8..d08d8c179f85 100644
--- a/Documentation/leds/leds-lp5521.txt
+++ b/Documentation/leds/leds-lp5521.txt
@@ -18,7 +18,25 @@ All three channels can be also controlled using the engine micro programs.
More details of the instructions can be found from the public data sheet.
LP5521 has the internal program memory for running various LED patterns.
-For the details, please refer to 'firmware' section in leds-lp55xx.txt
+There are two ways to run LED patterns.
+
+1) Legacy interface - enginex_mode and enginex_load
+ Control interface for the engines:
+ x is 1 .. 3
+ enginex_mode : disabled, load, run
+ enginex_load : store program (visible only in engine load mode)
+
+ Example (start to blink the channel 2 led):
+ cd /sys/class/leds/lp5521:channel2/device
+ echo "load" > engine3_mode
+ echo "037f4d0003ff6000" > engine3_load
+ echo "run" > engine3_mode
+
+ To stop the engine:
+ echo "disabled" > engine3_mode
+
+2) Firmware interface - LP55xx common interface
+ For the details, please refer to 'firmware' section in leds-lp55xx.txt
sysfs contains a selftest entry.
The test communicates with the chip and checks that
diff --git a/Documentation/leds/leds-lp5523.txt b/Documentation/leds/leds-lp5523.txt
index 899fdad509fe..5b3e91d4ac59 100644
--- a/Documentation/leds/leds-lp5523.txt
+++ b/Documentation/leds/leds-lp5523.txt
@@ -28,7 +28,26 @@ If both fields are NULL, 'lp5523' is used by default.
/sys/class/leds/lp5523:channelN (N: 0 ~ 8)
LP5523 has the internal program memory for running various LED patterns.
-For the details, please refer to 'firmware' section in leds-lp55xx.txt
+There are two ways to run LED patterns.
+
+1) Legacy interface - enginex_mode, enginex_load and enginex_leds
+ Control interface for the engines:
+ x is 1 .. 3
+ enginex_mode : disabled, load, run
+ enginex_load : microcode load (visible only in load mode)
+ enginex_leds : led mux control (visible only in load mode)
+
+ cd /sys/class/leds/lp5523:channel2/device
+ echo "load" > engine3_mode
+ echo "9d80400004ff05ff437f0000" > engine3_load
+ echo "111111111" > engine3_leds
+ echo "run" > engine3_mode
+
+ To stop the engine:
+ echo "disabled" > engine3_mode
+
+2) Firmware interface - LP55xx common interface
+ For the details, please refer to 'firmware' section in leds-lp55xx.txt
Selftest uses always the current from the platform data.