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Merge tag 'asm-generic-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd...
[J-linux.git] / include / linux / leds-expresswire.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Shared library for Kinetic's ExpressWire protocol.
4  * This protocol works by pulsing the ExpressWire IC's control GPIO.
5  * ktd2692 and ktd2801 are known to use this protocol.
6  */
7
8 #ifndef _LEDS_EXPRESSWIRE_H
9 #define _LEDS_EXPRESSWIRE_H
10
11 #include <linux/types.h>
12
13 struct gpio_desc;
14
15 struct expresswire_timing {
16         unsigned long poweroff_us;
17         unsigned long detect_delay_us;
18         unsigned long detect_us;
19         unsigned long data_start_us;
20         unsigned long end_of_data_low_us;
21         unsigned long end_of_data_high_us;
22         unsigned long short_bitset_us;
23         unsigned long long_bitset_us;
24 };
25
26 struct expresswire_common_props {
27         struct gpio_desc *ctrl_gpio;
28         struct expresswire_timing timing;
29 };
30
31 void expresswire_power_off(struct expresswire_common_props *props);
32 void expresswire_enable(struct expresswire_common_props *props);
33 void expresswire_start(struct expresswire_common_props *props);
34 void expresswire_end(struct expresswire_common_props *props);
35 void expresswire_set_bit(struct expresswire_common_props *props, bool bit);
36 void expresswire_write_u8(struct expresswire_common_props *props, u8 val);
37
38 #endif /* _LEDS_EXPRESSWIRE_H */
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