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| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-07 11:27:30 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-07 11:27:30 -0800 |
| commit | a3b072cd180c12e8fe0ece9487b9065808327640 (patch) | |
| tree | 62b982041be84748852d77cdf6ca5639ef40858f /Documentation/leds/leds-lp55xx.txt | |
| parent | 75a1ba5b2c529db60ca49626bcaf0bddf4548438 (diff) | |
| parent | 081cd62a010f97b5bc1d2b0cd123c5abc692b68a (diff) | |
Merge tag 'efi-urgent' into x86/urgent
* Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'Documentation/leds/leds-lp55xx.txt')
| -rw-r--r-- | Documentation/leds/leds-lp55xx.txt | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/leds/leds-lp55xx.txt b/Documentation/leds/leds-lp55xx.txt index 82713ff92eb..bcea12a0c58 100644 --- a/Documentation/leds/leds-lp55xx.txt +++ b/Documentation/leds/leds-lp55xx.txt @@ -73,6 +73,10 @@ select_engine : Select which engine is used for running program run_engine : Start program which is loaded via the firmware interface firmware : Load program data +In case of LP5523, one more command is required, 'enginex_leds'. +It is used for selecting LED output(s) at each engine number. +In more details, please refer to 'leds-lp5523.txt'. + For example, run blinking pattern in engine #1 of LP5521 echo 1 > /sys/bus/i2c/devices/xxxx/select_engine echo 1 > /sys/class/firmware/lp5521/loading @@ -81,10 +85,12 @@ echo 0 > /sys/class/firmware/lp5521/loading echo 1 > /sys/bus/i2c/devices/xxxx/run_engine For example, run blinking pattern in engine #3 of LP55231 +Two LEDs are configured as pattern output channels. echo 3 > /sys/bus/i2c/devices/xxxx/select_engine echo 1 > /sys/class/firmware/lp55231/loading echo "9d0740ff7e0040007e00a0010000" > /sys/class/firmware/lp55231/data echo 0 > /sys/class/firmware/lp55231/loading +echo "000001100" > /sys/bus/i2c/devices/xxxx/engine3_leds echo 1 > /sys/bus/i2c/devices/xxxx/run_engine To start blinking patterns in engine #2 and #3 simultaneously, @@ -99,17 +105,19 @@ done echo 1 > /sys/class/leds/red/device/run_engine Here is another example for LP5523. +Full LED strings are selected by 'engine2_leds'. echo 2 > /sys/bus/i2c/devices/xxxx/select_engine echo 1 > /sys/class/firmware/lp5523/loading echo "9d80400004ff05ff437f0000" > /sys/class/firmware/lp5523/data echo 0 > /sys/class/firmware/lp5523/loading +echo "111111111" > /sys/bus/i2c/devices/xxxx/engine2_leds echo 1 > /sys/bus/i2c/devices/xxxx/run_engine 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. +The pattern sqeuence of LP8501 is similar to LP5523. However pattern data is specific. Ex 1) Engine 1 is used echo 1 > /sys/bus/i2c/devices/xxxx/select_engine |