2 * <linux/gpio.h> - userspace ABI for the GPIO character devices
4 * Copyright (C) 2015 Linus Walleij
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
13 #include <linux/ioctl.h>
14 #include <linux/types.h>
17 * struct gpiochip_info - Information about a certain GPIO chip
18 * @name: the Linux kernel name of this GPIO chip
19 * @label: a functional name for this GPIO chip, such as a product
21 * @lines: number of GPIO lines on this chip
23 struct gpiochip_info {
29 /* Line is in use by the kernel */
30 #define GPIOLINE_FLAG_KERNEL (1UL << 0)
31 #define GPIOLINE_FLAG_IS_OUT (1UL << 1)
32 #define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2)
33 #define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3)
34 #define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4)
37 * struct gpioline_info - Information about a certain GPIO line
38 * @line_offset: the local offset on this GPIO device, fill this in when
39 * requesting the line information from the kernel
40 * @flags: various flags for this line
41 * @name: the name of this GPIO line, such as the output pin of the line on the
42 * chip, a rail or a pin header name on a board, as specified by the gpio
44 * @consumer: a functional name for the consumer of this GPIO line as set by
45 * whatever is using it, will be NULL if there is no current user but may
46 * also be NULL if the consumer doesn't set this up
48 struct gpioline_info {
55 #define GPIO_GET_CHIPINFO_IOCTL _IOR(0xB4, 0x01, struct gpiochip_info)
56 #define GPIO_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x02, struct gpioline_info)
58 #endif /* _UAPI_GPIO_H_ */