Commit b1816b22 authored by Vicentiu Galanopulo's avatar Vicentiu Galanopulo Committed by Lee Jones
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Documentation:leds: Add leds-st1202.rst 



Add usage for sysfs hw_pattern entry for leds-st1202

Signed-off-by: default avatarVicentiu Galanopulo <vicentiu.galanopulo@remote-tech.co.uk>
Link: https://lore.kernel.org/r/20241218182001.41476-2-vicentiu.galanopulo@remote-tech.co.uk


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent c2b148f3

Documentation/leds/index.rst

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@@ -28,4 +28,5 @@ LEDs 
   leds-mlxcpld

   leds-mt6370-rgb

   leds-sc27xx

   leds-st1202.rst

   leds-qcom-lpg

Documentation/leds/leds-st1202.rst

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.. SPDX-License-Identifier: GPL-2.0



============================================

Kernel driver for STMicroelectronics LED1202

============================================



/sys/class/leds/<led>/hw_pattern

--------------------------------



Specify a hardware pattern for the ST1202 LED. The LED controller

implements 12 low-side current generators with independent dimming

control. Internal volatile memory allows the user to store up to 8

different patterns. Each pattern is a particular output configuration

in terms of PWM duty-cycle and duration (ms).



To be compatible with the hardware pattern format, maximum 8 tuples of

brightness (PWM) and duration must be written to hw_pattern.



- Min pattern duration: 22 ms

- Max pattern duration: 5660 ms



The format of the hardware pattern values should be:

"brightness duration brightness duration ..."



/sys/class/leds/<led>/repeat

----------------------------



Specify a pattern repeat number, which is common for all channels.

Default is 1; negative numbers and 0 are invalid.



This file will always return the originally written repeat number.



When the 255 value is written to it, all patterns will repeat

indefinitely.