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| author | Dan Murphy <dmurphy@ti.com> | 2020-07-16 20:19:56 +0200 |
|---|---|---|
| committer | Pavel Machek <pavel@ucw.cz> | 2020-07-22 14:41:29 +0200 |
| commit | 55d5d3b46b08a4dc0b05343d24640744e7430ed7 (patch) | |
| tree | f201e4248416a591ea17c23cc2110e75efcab153 /Documentation/ABI | |
| parent | leds: Add multicolor ID to the color ID list (diff) | |
| download | linux-55d5d3b46b08a4dc0b05343d24640744e7430ed7.tar.xz linux-55d5d3b46b08a4dc0b05343d24640744e7430ed7.zip | |
leds: multicolor: Introduce a multicolor class definition
Introduce a multicolor class that groups colored LEDs
within a LED node.
The multicolor class groups monochrome LEDs and allows controlling two
aspects of the final combined color: hue and lightness. The former is
controlled via the intensity file and the latter is controlled
via brightness file.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
[squashed leds: multicolor: Fix camel case in documentation in]
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-led-multicolor | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-led-multicolor b/Documentation/ABI/testing/sysfs-class-led-multicolor new file mode 100644 index 000000000000..eeeddcbdbbe3 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-led-multicolor @@ -0,0 +1,35 @@ +What: /sys/class/leds/<led>/brightness +Date: March 2020 +KernelVersion: 5.9 +Contact: Dan Murphy <dmurphy@ti.com> +Description: read/write + Writing to this file will update all LEDs within the group to a + calculated percentage of what each color LED intensity is set + to. The percentage is calculated for each grouped LED via the + equation below: + + led_brightness = brightness * multi_intensity/max_brightness + + For additional details please refer to + Documentation/leds/leds-class-multicolor.rst. + + The value of the LED is from 0 to + /sys/class/leds/<led>/max_brightness. + +What: /sys/class/leds/<led>/multi_index +Date: March 2020 +KernelVersion: 5.9 +Contact: Dan Murphy <dmurphy@ti.com> +Description: read + The multi_index array, when read, will output the LED colors + as an array of strings as they are indexed in the + multi_intensity file. + +What: /sys/class/leds/<led>/multi_intensity +Date: March 2020 +KernelVersion: 5.9 +Contact: Dan Murphy <dmurphy@ti.com> +Description: read/write + This file contains array of integers. Order of components is + described by the multi_index array. The maximum intensity should + not exceed /sys/class/leds/<led>/max_brightness. |