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>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Shared library for Kinetic's ExpressWire protocol.
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* This protocol works by pulsing the ExpressWire IC's control GPIO.
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* ktd2692 and ktd2801 are known to use this protocol.
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*/
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#ifndef _LEDS_EXPRESSWIRE_H
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#define _LEDS_EXPRESSWIRE_H
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#include <linux/types.h>
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struct gpio_desc;
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struct expresswire_timing {
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unsigned long poweroff_us;
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unsigned long detect_delay_us;
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unsigned long detect_us;
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unsigned long data_start_us;
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unsigned long end_of_data_low_us;
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unsigned long end_of_data_high_us;
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unsigned long short_bitset_us;
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unsigned long long_bitset_us;
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};
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struct expresswire_common_props {
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struct gpio_desc *ctrl_gpio;
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struct expresswire_timing timing;
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};
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void expresswire_power_off(struct expresswire_common_props *props);
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void expresswire_enable(struct expresswire_common_props *props);
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void expresswire_start(struct expresswire_common_props *props);
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void expresswire_end(struct expresswire_common_props *props);
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void expresswire_set_bit(struct expresswire_common_props *props, bool bit);
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void expresswire_write_u8(struct expresswire_common_props *props, u8 val);
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#endif /* _LEDS_EXPRESSWIRE_H */
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