1 /****************************************************************************
2  ****************************************************************************
3  ***
4  ***   This header was automatically generated from a Linux kernel header
5  ***   of the same name, to make information necessary for userspace to
6  ***   call into the kernel available to libc.  It contains only constants,
7  ***   structures, and macros generated from the original header, and thus,
8  ***   contains no copyrightable information.
9  ***
10  ***   To edit the content of this header, modify the corresponding
11  ***   source file (e.g. under external/kernel-headers/original/) then
12  ***   run bionic/libc/kernel/tools/update_all.py
13  ***
14  ***   Any manual change here will be lost the next time this script will
15  ***   be run. You've been warned!
16  ***
17  ****************************************************************************
18  ****************************************************************************/
19 #ifndef _UAPI_GPIO_H_
20 #define _UAPI_GPIO_H_
21 #include <linux/ioctl.h>
22 #include <linux/types.h>
23 struct gpiochip_info {
24   char name[32];
25   char label[32];
26   __u32 lines;
27 };
28 #define GPIOLINE_FLAG_KERNEL (1UL << 0)
29 #define GPIOLINE_FLAG_IS_OUT (1UL << 1)
30 #define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2)
31 #define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3)
32 #define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4)
33 #define GPIOLINE_FLAG_BIAS_PULL_UP (1UL << 5)
34 #define GPIOLINE_FLAG_BIAS_PULL_DOWN (1UL << 6)
35 #define GPIOLINE_FLAG_BIAS_DISABLE (1UL << 7)
36 struct gpioline_info {
37   __u32 line_offset;
38   __u32 flags;
39   char name[32];
40   char consumer[32];
41 };
42 #define GPIOHANDLES_MAX 64
43 enum {
44   GPIOLINE_CHANGED_REQUESTED = 1,
45   GPIOLINE_CHANGED_RELEASED,
46   GPIOLINE_CHANGED_CONFIG,
47 };
48 struct gpioline_info_changed {
49   struct gpioline_info info;
50   __u64 timestamp;
51   __u32 event_type;
52   __u32 padding[5];
53 };
54 #define GPIOHANDLE_REQUEST_INPUT (1UL << 0)
55 #define GPIOHANDLE_REQUEST_OUTPUT (1UL << 1)
56 #define GPIOHANDLE_REQUEST_ACTIVE_LOW (1UL << 2)
57 #define GPIOHANDLE_REQUEST_OPEN_DRAIN (1UL << 3)
58 #define GPIOHANDLE_REQUEST_OPEN_SOURCE (1UL << 4)
59 #define GPIOHANDLE_REQUEST_BIAS_PULL_UP (1UL << 5)
60 #define GPIOHANDLE_REQUEST_BIAS_PULL_DOWN (1UL << 6)
61 #define GPIOHANDLE_REQUEST_BIAS_DISABLE (1UL << 7)
62 struct gpiohandle_request {
63   __u32 lineoffsets[GPIOHANDLES_MAX];
64   __u32 flags;
65   __u8 default_values[GPIOHANDLES_MAX];
66   char consumer_label[32];
67   __u32 lines;
68   int fd;
69 };
70 struct gpiohandle_config {
71   __u32 flags;
72   __u8 default_values[GPIOHANDLES_MAX];
73   __u32 padding[4];
74 };
75 #define GPIOHANDLE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0a, struct gpiohandle_config)
76 struct gpiohandle_data {
77   __u8 values[GPIOHANDLES_MAX];
78 };
79 #define GPIOHANDLE_GET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x08, struct gpiohandle_data)
80 #define GPIOHANDLE_SET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x09, struct gpiohandle_data)
81 #define GPIOEVENT_REQUEST_RISING_EDGE (1UL << 0)
82 #define GPIOEVENT_REQUEST_FALLING_EDGE (1UL << 1)
83 #define GPIOEVENT_REQUEST_BOTH_EDGES ((1UL << 0) | (1UL << 1))
84 struct gpioevent_request {
85   __u32 lineoffset;
86   __u32 handleflags;
87   __u32 eventflags;
88   char consumer_label[32];
89   int fd;
90 };
91 #define GPIOEVENT_EVENT_RISING_EDGE 0x01
92 #define GPIOEVENT_EVENT_FALLING_EDGE 0x02
93 struct gpioevent_data {
94   __u64 timestamp;
95   __u32 id;
96 };
97 #define GPIO_GET_CHIPINFO_IOCTL _IOR(0xB4, 0x01, struct gpiochip_info)
98 #define GPIO_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x02, struct gpioline_info)
99 #define GPIO_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x0b, struct gpioline_info)
100 #define GPIO_GET_LINEINFO_UNWATCH_IOCTL _IOWR(0xB4, 0x0c, __u32)
101 #define GPIO_GET_LINEHANDLE_IOCTL _IOWR(0xB4, 0x03, struct gpiohandle_request)
102 #define GPIO_GET_LINEEVENT_IOCTL _IOWR(0xB4, 0x04, struct gpioevent_request)
103 #endif
104