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b1816b2238
Add usage for sysfs hw_pattern entry for leds-st1202 Signed-off-by: Vicentiu 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: Lee Jones <lee@kernel.org>
35 lines
1.1 KiB
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35 lines
1.1 KiB
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.. SPDX-License-Identifier: GPL-2.0
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============================================
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Kernel driver for STMicroelectronics LED1202
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============================================
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/sys/class/leds/<led>/hw_pattern
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--------------------------------
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Specify a hardware pattern for the ST1202 LED. The LED controller
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implements 12 low-side current generators with independent dimming
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control. Internal volatile memory allows the user to store up to 8
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different patterns. Each pattern is a particular output configuration
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in terms of PWM duty-cycle and duration (ms).
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To be compatible with the hardware pattern format, maximum 8 tuples of
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brightness (PWM) and duration must be written to hw_pattern.
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- Min pattern duration: 22 ms
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- Max pattern duration: 5660 ms
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The format of the hardware pattern values should be:
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"brightness duration brightness duration ..."
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/sys/class/leds/<led>/repeat
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----------------------------
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Specify a pattern repeat number, which is common for all channels.
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Default is 1; negative numbers and 0 are invalid.
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This file will always return the originally written repeat number.
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When the 255 value is written to it, all patterns will repeat
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indefinitely.
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