/* 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_write_u8(struct expresswire_common_props *props, u8 val); #endif /* _LEDS_EXPRESSWIRE_H */