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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 11:35:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 11:35:33 -0700 |
| commit | 5223161dc0f5e44fbf3d5e42d23697b6796cdf4e (patch) | |
| tree | 10837ec58d96e751469d78d347f76c0d49238d72 /Documentation/leds/leds-lp5521.txt | |
| parent | e5d0c874391a500be7643d3eef9fb07171eee129 (diff) | |
| parent | 61abeba5222895d6900b13115f5d8eba7988d7d6 (diff) | |
| download | linux-5223161dc0f5e44fbf3d5e42d23697b6796cdf4e.tar.gz linux-5223161dc0f5e44fbf3d5e42d23697b6796cdf4e.tar.bz2 linux-5223161dc0f5e44fbf3d5e42d23697b6796cdf4e.zip | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull led updates from Bryan Wu:
"Sorry for the late pull request, since I'm just back from vacation.
LED subsystem updates for 3.12:
- pca9633 driver DT supporting and pca9634 chip supporting
- restore legacy device attributes for lp5521
- other fixing and updates"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (28 commits)
leds: wm831x-status: Request a REG resource
leds: trigger: ledtrig-backlight: Fix invalid memory access in fb_event notification callback
leds-pca963x: Fix device tree parsing
leds-pca9633: Rename to leds-pca963x
leds-pca9633: Add mutex to the ledout register
leds-pca9633: Unique naming of the LEDs
leds-pca9633: Add support for PCA9634
leds: lp5562: use LP55xx common macros for device attributes
Documentation: leds-lp5521,lp5523: update device attribute information
leds: lp5523: remove unnecessary writing commands
leds: lp5523: restore legacy device attributes
leds: lp5523: LED MUX configuration on initializing
leds: lp5523: make separate API for loading engine
leds: lp5521: remove unnecessary writing commands
leds: lp5521: restore legacy device attributes
leds: lp55xx: add common macros for device attributes
leds: lp55xx: add common data structure for program
Documentation: leds: Fix a typo
leds: ss4200: Fix incorrect placement of __initdata
leds: clevo-mail: Fix incorrect placement of __initdata
...
Diffstat (limited to 'Documentation/leds/leds-lp5521.txt')
| -rw-r--r-- | Documentation/leds/leds-lp5521.txt | 20 |
1 files changed, 19 insertions, 1 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 |