linux-stable/Documentation/leds/index.rst
Hans de Goede 5b916aa755 leds: cht-wcove: Add support for breathing mode use hw_pattern sysfs API
The hw-blinking of the LED controller in the Whiskey Cove PMIC can also
be used for a hw-breathing effect.

As discussed during review of v2 of the submission of the new
leds-cht-wcove driver, the LED subsystem already supports breathing mode
on several other LED controllers using the hw_pattern interface.

Implement a pattern_set callback to implement breathing mode modelled
after the breathing mode supported by the SC27xx breathing light and
Crane EL15203000 LED drivers. The Whiskey Cove PMIC's breathing mode
is closer to the EL15203000 one then to the SC27xx one since it does
not support staying high / low for a specific time, it only supports
rise and fall times.

As such the supported hw_pattern and the documentation for this is almost
a 1:1 copy of the pattern/docs for the EL15203000 breathing mode.

Suggested-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Link: https://lore.kernel.org/all/6beed61c-1fc6-6525-e873-a8978f5fbffb@gmail.com/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230430195952.862527-4-hdegoede@redhat.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-05-25 12:16:15 +01:00

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.. SPDX-License-Identifier: GPL-2.0
====
LEDs
====
.. toctree::
:maxdepth: 1
leds-class
leds-class-flash
leds-class-multicolor
ledtrig-oneshot
ledtrig-transient
ledtrig-usbport
uleds
leds-blinkm
leds-cht-wcove
leds-el15203000
leds-lm3556
leds-lp3944
leds-lp5521
leds-lp5523
leds-lp5562
leds-lp55xx
leds-mlxcpld
leds-mt6370-rgb
leds-sc27xx
leds-qcom-lpg