path: root/Documentation/leds
diff options
authorKim, Milo <Milo.Kim@ti.com>2012-08-22 15:32:29 +0800
committerBryan Wu <bryan.wu@canonical.com>2012-09-11 18:32:41 +0800
commit94b43b677104e50b9f8dd75aacb3c69e16089a68 (patch)
tree991fa64dbabaa3eee5c0dd900a4bbe5ca0c0e3aa /Documentation/leds
parent127aedc8ecae2628511533ddeb239e99e4bed5e8 (diff)
leds-lp5523: add channel name in the platform data
The name of each led channel is configurable. If the name is NULL, just use the channel id for making the channel name Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Diffstat (limited to 'Documentation/leds')
1 files changed, 18 insertions, 3 deletions
diff --git a/Documentation/leds/leds-lp5523.txt b/Documentation/leds/leds-lp5523.txt
index fad2feb8b7c..c2743f59f9a 100644
--- a/Documentation/leds/leds-lp5523.txt
+++ b/Documentation/leds/leds-lp5523.txt
@@ -10,8 +10,22 @@ Contact: Samu Onkalo (samu.p.onkalo-at-nokia.com)
LP5523 can drive up to 9 channels. Leds can be controlled directly via
-the led class control interface. Channels have generic names:
-lp5523:channelx where x is 0...8
+the led class control interface.
+The name of each channel is configurable in the platform data - name and label.
+There are three options to make the channel name.
+a) Define the 'name' in the platform data
+To make specific channel name, then use 'name' platform data.
+/sys/class/leds/R1 (name: 'R1')
+/sys/class/leds/B1 (name: 'B1')
+b) Use the 'label' with no 'name' field
+For one device name with channel number, then use 'label'.
+/sys/class/leds/RGB:channelN (label: 'RGB', N: 0 ~ 8)
+c) Default
+If both fields are NULL, 'lp5523' is used by default.
+/sys/class/leds/lp5523:channelN (N: 0 ~ 8)
The chip provides 3 engines. Each engine can control channels without
interaction from the main CPU. Details of the micro engine code can be found
@@ -46,12 +60,13 @@ Note - chan_nr can have values between 0 and 8.
static struct lp5523_led_config lp5523_led_config[] = {
+ .name = "D1",
.chan_nr = 0,
.led_current = 50,
.max_current = 130,
- }, {
+ {
.chan_nr = 8,
.led_current = 50,
.max_current = 130,