Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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989 B
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28 lines
989 B
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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver for Spreadtrum SC27XX
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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 SC27XX LED. For the SC27XX
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LED controller, it only supports 4 stages to make a single
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hardware pattern, which is used to configure the rise time,
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high time, fall time and low time for the breathing mode.
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For the breathing mode, the SC27XX LED only expects one brightness
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for the high stage. To be compatible with the hardware pattern
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format, we should set brightness as 0 for rise stage, fall
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stage and low stage.
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- Min stage duration: 125 ms
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- Max stage duration: 31875 ms
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Since the stage duration step is 125 ms, the duration should be
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a multiplier of 125, like 125ms, 250ms, 375ms, 500ms ... 31875ms.
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Thus the format of the hardware pattern values should be:
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"0 rise_duration brightness high_duration 0 fall_duration 0 low_duration".
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