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