summaryrefslogtreecommitdiff
path: root/include/uapi/linux/gpio.h
blob: 07865c60109949fc7fb5bbb40cc1f5d77a5894b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * <linux/gpio.h> - userspace ABI for the GPIO character devices
 *
 * Copyright (C) 2016 Linus Walleij
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */
#ifndef _UAPI_GPIO_H_
#define _UAPI_GPIO_H_

#include <linux/const.h>
#include <linux/ioctl.h>
#include <linux/types.h>

/*
 * The maximum size of name and label arrays.
 *
 * Must be a multiple of 8 to ensure 32/64-bit alignment of structs.
 */
#define GPIO_MAX_NAME_SIZE 32

/**
 * struct gpiochip_info - Information about a certain GPIO chip
 * @name: the Linux kernel name of this GPIO chip
 * @label: a functional name for this GPIO chip, such as a product
 * number, may be empty
 * @lines: number of GPIO lines on this chip
 */
struct gpiochip_info {
	char name[GPIO_MAX_NAME_SIZE];
	char label[GPIO_MAX_NAME_SIZE];
	__u32 lines;
};

/*
 * Maximum number of requested lines.
 *
 * Must be no greater than 64, as bitmaps are restricted here to 64-bits
 * for simplicity, and a multiple of 2 to ensure 32/64-bit alignment of
 * structs.
 */
#define GPIO_V2_LINES_MAX 64

/*
 * The maximum number of configuration attributes associated with a line
 * request.
 */
#define GPIO_V2_LINE_NUM_ATTRS_MAX 10

/**
 * enum gpio_v2_line_flag - &struct gpio_v2_line_attribute.flags values
 * @GPIO_V2_LINE_FLAG_USED: line is not available for request
 * @GPIO_V2_LINE_FLAG_ACTIVE_LOW: line active state is physical low
 * @GPIO_V2_LINE_FLAG_INPUT: line is an input
 * @GPIO_V2_LINE_FLAG_OUTPUT: line is an output
 * @GPIO_V2_LINE_FLAG_EDGE_RISING: line detects rising (inactive to active)
 * edges
 * @GPIO_V2_LINE_FLAG_EDGE_FALLING: line detects falling (active to
 * inactive) edges
 * @GPIO_V2_LINE_FLAG_OPEN_DRAIN: line is an open drain output
 * @GPIO_V2_LINE_FLAG_OPEN_SOURCE: line is an open source output
 * @GPIO_V2_LINE_FLAG_BIAS_PULL_UP: line has pull-up bias enabled
 * @GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN: line has pull-down bias enabled
 * @GPIO_V2_LINE_FLAG_BIAS_DISABLED: line has bias disabled
 */
enum gpio_v2_line_flag {
	GPIO_V2_LINE_FLAG_USED			= _BITULL(0),
	GPIO_V2_LINE_FLAG_ACTIVE_LOW		= _BITULL(1),
	GPIO_V2_LINE_FLAG_INPUT			= _BITULL(2),
	GPIO_V2_LINE_FLAG_OUTPUT		= _BITULL(3),
	GPIO_V2_LINE_FLAG_EDGE_RISING		= _BITULL(4),
	GPIO_V2_LINE_FLAG_EDGE_FALLING		= _BITULL(5),
	GPIO_V2_LINE_FLAG_OPEN_DRAIN		= _BITULL(6),
	GPIO_V2_LINE_FLAG_OPEN_SOURCE		= _BITULL(7),
	GPIO_V2_LINE_FLAG_BIAS_PULL_UP		= _BITULL(8),
	GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN	= _BITULL(9),
	GPIO_V2_LINE_FLAG_BIAS_DISABLED		= _BITULL(10),
};

/**
 * struct gpio_v2_line_values - Values of GPIO lines
 * @bits: a bitmap containing the value of the lines, set to 1 for active
 * and 0 for inactive.
 * @mask: a bitmap identifying the lines to get or set, with each bit
 * number corresponding to the index into &struct
 * gpio_v2_line_request.offsets.
 */
struct gpio_v2_line_values {
	__aligned_u64 bits;
	__aligned_u64 mask;
};

/**
 * enum gpio_v2_line_attr_id - &struct gpio_v2_line_attribute.id values
 * identifying which field of the attribute union is in use.
 * @GPIO_V2_LINE_ATTR_ID_FLAGS: flags field is in use
 * @GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES: values field is in use
 * @GPIO_V2_LINE_ATTR_ID_DEBOUNCE: debounce_period_us is in use
 */
enum gpio_v2_line_attr_id {
	GPIO_V2_LINE_ATTR_ID_FLAGS		= 1,
	GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES	= 2,
	GPIO_V2_LINE_ATTR_ID_DEBOUNCE		= 3,
};

/**
 * struct gpio_v2_line_attribute - a configurable attribute of a line
 * @id: attribute identifier with value from &enum gpio_v2_line_attr_id
 * @padding: reserved for future use and must be zero filled
 * @flags: if id is GPIO_V2_LINE_ATTR_ID_FLAGS, the flags for the GPIO
 * line, with values from enum gpio_v2_line_flag, such as
 * GPIO_V2_LINE_FLAG_ACTIVE_LOW, GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed
 * together.  This overrides the default flags contained in the &struct
 * gpio_v2_line_config for the associated line.
 * @values: if id is GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES, a bitmap
 * containing the values to which the lines will be set, with each bit
 * number corresponding to the index into &struct
 * gpio_v2_line_request.offsets.
 * @debounce_period_us: if id is GPIO_V2_LINE_ATTR_ID_DEBOUNCE, the desired
 * debounce period, in microseconds
 */
struct gpio_v2_line_attribute {
	__u32 id;
	__u32 padding;
	union {
		__aligned_u64 flags;
		__aligned_u64 values;
		__u32 debounce_period_us;
	};
};

/**
 * struct gpio_v2_line_config_attribute - a configuration attribute
 * associated with one or more of the requested lines.
 * @attr: the configurable attribute
 * @mask: a bitmap identifying the lines to which the attribute applies,
 * with each bit number corresponding to the index into &struct
 * gpio_v2_line_request.offsets.
 */
struct gpio_v2_line_config_attribute {
	struct gpio_v2_line_attribute attr;
	__aligned_u64 mask;
};

/**
 * struct gpio_v2_line_config - Configuration for GPIO lines
 * @flags: flags for the GPIO lines, with values from enum
 * gpio_v2_line_flag, such as GPIO_V2_LINE_FLAG_ACTIVE_LOW,
 * GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed together.  This is the default for
 * all requested lines but may be overridden for particular lines using
 * attrs.
 * @num_attrs: the number of attributes in attrs
 * @padding: reserved for future use and must be zero filled
 * @attrs: the configuration attributes associated with the requested
 * lines.  Any attribute should only be associated with a particular line
 * once.  If an attribute is associated with a line multiple times then the
 * first occurrence (i.e. lowest index) has precedence.
 */
struct gpio_v2_line_config {
	__aligned_u64 flags;
	__u32 num_attrs;
	/* Pad to fill implicit padding and reserve space for future use. */
	__u32 padding[5];
	struct gpio_v2_line_config_attribute attrs[GPIO_V2_LINE_NUM_ATTRS_MAX];
};

/**
 * struct gpio_v2_line_request - Information about a request for GPIO lines
 * @offsets: an array of desired lines, specified by offset index for the
 * associated GPIO chip
 * @consumer: a desired consumer label for the selected GPIO lines such as
 * "my-bitbanged-relay"
 * @config: requested configuration for the lines.
 * @num_lines: number of lines requested in this request, i.e. the number
 * of valid fields in the GPIO_V2_LINES_MAX sized arrays, set to 1 to
 * request a single line
 * @event_buffer_size: a suggested minimum number of line events that the
 * kernel should buffer.  This is only relevant if edge detection is
 * enabled in the configuration. Note that this is only a suggested value
 * and the kernel may allocate a larger buffer or cap the size of the
 * buffer. If this field is zero then the buffer size defaults to a minimum
 * of num_lines*16.
 * @padding: reserved for future use and must be zero filled
 * @fd: if successful this field will contain a valid anonymous file handle
 * after a GPIO_GET_LINE_IOCTL operation, zero or negative value means
 * error
 */
struct gpio_v2_line_request {
	__u32 offsets[GPIO_V2_LINES_MAX];
	char consumer[GPIO_MAX_NAME_SIZE];
	struct gpio_v2_line_config config;
	__u32 num_lines;
	__u32 event_buffer_size;
	/* Pad to fill implicit padding and reserve space for future use. */
	__u32 padding[5];
	__s32 fd;
};

/**
 * struct gpio_v2_line_info - Information about a certain GPIO line
 * @name: the name of this GPIO line, such as the output pin of the line on
 * the chip, a rail or a pin header name on a board, as specified by the
 * GPIO chip, may be empty
 * @consumer: a functional name for the consumer of this GPIO line as set
 * by whatever is using it, will be empty if there is no current user but
 * may also be empty if the consumer doesn't set this up
 * @flags: flags for the GPIO line, such as GPIO_V2_LINE_FLAG_ACTIVE_LOW,
 * GPIO_V2_LINE_FLAG_OUTPUT etc, OR:ed together
 * @offset: the local offset on this GPIO chip, fill this in when
 * requesting the line information from the kernel
 * @num_attrs: the number of attributes in attrs
 * @attrs: the configuration attributes associated with the line
 * @padding: reserved for future use
 */
struct gpio_v2_line_info {
	char name[GPIO_MAX_NAME_SIZE];
	char consumer[GPIO_MAX_NAME_SIZE];
	__u32 offset;
	__u32 num_attrs;
	__aligned_u64 flags;
	struct gpio_v2_line_attribute attrs[GPIO_V2_LINE_NUM_ATTRS_MAX];
	/* Space reserved for future use. */
	__u32 padding[4];
};

/**
 * enum gpio_v2_line_changed_type - &struct gpio_v2_line_changed.event_type
 * values
 * @GPIO_V2_LINE_CHANGED_REQUESTED: line has been requested
 * @GPIO_V2_LINE_CHANGED_RELEASED: line has been released
 * @GPIO_V2_LINE_CHANGED_CONFIG: line has been reconfigured
 */
enum gpio_v2_line_changed_type {
	GPIO_V2_LINE_CHANGED_REQUESTED	= 1,
	GPIO_V2_LINE_CHANGED_RELEASED	= 2,
	GPIO_V2_LINE_CHANGED_CONFIG	= 3,
};

/**
 * struct gpio_v2_line_info_changed - Information about a change in status
 * of a GPIO line
 * @info: updated line information
 * @timestamp_ns: estimate of time of status change occurrence, in nanoseconds
 * @event_type: the type of change with a value from enum
 * gpio_v2_line_changed_type
 * @padding: reserved for future use
 */
struct gpio_v2_line_info_changed {
	struct gpio_v2_line_info info;
	__aligned_u64 timestamp_ns;
	__u32 event_type;
	/* Pad struct to 64-bit boundary and reserve space for future use. */
	__u32 padding[5];
};

/**
 * enum gpio_v2_line_event_id - &struct gpio_v2_line_event.id values
 * @GPIO_V2_LINE_EVENT_RISING_EDGE: event triggered by a rising edge
 * @GPIO_V2_LINE_EVENT_FALLING_EDGE: event triggered by a falling edge
 */
enum gpio_v2_line_event_id {
	GPIO_V2_LINE_EVENT_RISING_EDGE	= 1,
	GPIO_V2_LINE_EVENT_FALLING_EDGE	= 2,
};

/**
 * struct gpio_v2_line_event - The actual event being pushed to userspace
 * @timestamp_ns: best estimate of time of event occurrence, in nanoseconds.
 * The timestamp_ns is read from CLOCK_MONOTONIC and is intended to allow the
 * accurate measurement of the time between events.  It does not provide
 * the wall-clock time.
 * @id: event identifier with value from enum gpio_v2_line_event_id
 * @offset: the offset of the line that triggered the event
 * @seqno: the sequence number for this event in the sequence of events for
 * all the lines in this line request
 * @line_seqno: the sequence number for this event in the sequence of
 * events on this particular line
 * @padding: reserved for future use
 */
struct gpio_v2_line_event {
	__aligned_u64 timestamp_ns;
	__u32 id;
	__u32 offset;
	__u32 seqno;
	__u32 line_seqno;
	/* Space reserved for future use. */
	__u32 padding[6];
};

/*
 *  ABI v1
 *
 * This version of the ABI is deprecated.
 * Use the latest version of the ABI, defined above, instead.
 */

/* Informational flags */
#define GPIOLINE_FLAG_KERNEL		(1UL << 0) /* Line used by the kernel */
#define GPIOLINE_FLAG_IS_OUT		(1UL << 1)
#define GPIOLINE_FLAG_ACTIVE_LOW	(1UL << 2)
#define GPIOLINE_FLAG_OPEN_DRAIN	(1UL << 3)
#define GPIOLINE_FLAG_OPEN_SOURCE	(1UL << 4)
#define GPIOLINE_FLAG_BIAS_PULL_UP	(1UL << 5)
#define GPIOLINE_FLAG_BIAS_PULL_DOWN	(1UL << 6)
#define GPIOLINE_FLAG_BIAS_DISABLE	(1UL << 7)

/**
 * struct gpioline_info - Information about a certain GPIO line
 * @line_offset: the local offset on this GPIO device, fill this in when
 * requesting the line information from the kernel
 * @flags: various flags for this line
 * @name: the name of this GPIO line, such as the output pin of the line on the
 * chip, a rail or a pin header name on a board, as specified by the gpio
 * chip, may be empty
 * @consumer: a functional name for the consumer of this GPIO line as set by
 * whatever is using it, will be empty if there is no current user but may
 * also be empty if the consumer doesn't set this up
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_info instead.
 */
struct gpioline_info {
	__u32 line_offset;
	__u32 flags;
	char name[GPIO_MAX_NAME_SIZE];
	char consumer[GPIO_MAX_NAME_SIZE];
};

/* Maximum number of requested handles */
#define GPIOHANDLES_MAX 64

/* Possible line status change events */
enum {
	GPIOLINE_CHANGED_REQUESTED = 1,
	GPIOLINE_CHANGED_RELEASED,
	GPIOLINE_CHANGED_CONFIG,
};

/**
 * struct gpioline_info_changed - Information about a change in status
 * of a GPIO line
 * @info: updated line information
 * @timestamp: estimate of time of status change occurrence, in nanoseconds
 * @event_type: one of GPIOLINE_CHANGED_REQUESTED, GPIOLINE_CHANGED_RELEASED
 * and GPIOLINE_CHANGED_CONFIG
 *
 * Note: struct gpioline_info embedded here has 32-bit alignment on its own,
 * but it works fine with 64-bit alignment too. With its 72 byte size, we can
 * guarantee there are no implicit holes between it and subsequent members.
 * The 20-byte padding at the end makes sure we don't add any implicit padding
 * at the end of the structure on 64-bit architectures.
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_info_changed instead.
 */
struct gpioline_info_changed {
	struct gpioline_info info;
	__u64 timestamp;
	__u32 event_type;
	__u32 padding[5]; /* for future use */
};

/* Linerequest flags */
#define GPIOHANDLE_REQUEST_INPUT	(1UL << 0)
#define GPIOHANDLE_REQUEST_OUTPUT	(1UL << 1)
#define GPIOHANDLE_REQUEST_ACTIVE_LOW	(1UL << 2)
#define GPIOHANDLE_REQUEST_OPEN_DRAIN	(1UL << 3)
#define GPIOHANDLE_REQUEST_OPEN_SOURCE	(1UL << 4)
#define GPIOHANDLE_REQUEST_BIAS_PULL_UP	(1UL << 5)
#define GPIOHANDLE_REQUEST_BIAS_PULL_DOWN	(1UL << 6)
#define GPIOHANDLE_REQUEST_BIAS_DISABLE	(1UL << 7)

/**
 * struct gpiohandle_request - Information about a GPIO handle request
 * @lineoffsets: an array of desired lines, specified by offset index for the
 * associated GPIO device
 * @flags: desired flags for the desired GPIO lines, such as
 * GPIOHANDLE_REQUEST_OUTPUT, GPIOHANDLE_REQUEST_ACTIVE_LOW etc, OR:ed
 * together. Note that even if multiple lines are requested, the same flags
 * must be applicable to all of them, if you want lines with individual
 * flags set, request them one by one. It is possible to select
 * a batch of input or output lines, but they must all have the same
 * characteristics, i.e. all inputs or all outputs, all active low etc
 * @default_values: if the GPIOHANDLE_REQUEST_OUTPUT is set for a requested
 * line, this specifies the default output value, should be 0 (low) or
 * 1 (high), anything else than 0 or 1 will be interpreted as 1 (high)
 * @consumer_label: a desired consumer label for the selected GPIO line(s)
 * such as "my-bitbanged-relay"
 * @lines: number of lines requested in this request, i.e. the number of
 * valid fields in the above arrays, set to 1 to request a single line
 * @fd: if successful this field will contain a valid anonymous file handle
 * after a GPIO_GET_LINEHANDLE_IOCTL operation, zero or negative value
 * means error
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_request instead.
 */
struct gpiohandle_request {
	__u32 lineoffsets[GPIOHANDLES_MAX];
	__u32 flags;
	__u8 default_values[GPIOHANDLES_MAX];
	char consumer_label[GPIO_MAX_NAME_SIZE];
	__u32 lines;
	int fd;
};

/**
 * struct gpiohandle_config - Configuration for a GPIO handle request
 * @flags: updated flags for the requested GPIO lines, such as
 * GPIOHANDLE_REQUEST_OUTPUT, GPIOHANDLE_REQUEST_ACTIVE_LOW etc, OR:ed
 * together
 * @default_values: if the GPIOHANDLE_REQUEST_OUTPUT is set in flags,
 * this specifies the default output value, should be 0 (low) or
 * 1 (high), anything else than 0 or 1 will be interpreted as 1 (high)
 * @padding: reserved for future use and should be zero filled
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_config instead.
 */
struct gpiohandle_config {
	__u32 flags;
	__u8 default_values[GPIOHANDLES_MAX];
	__u32 padding[4]; /* padding for future use */
};

/**
 * struct gpiohandle_data - Information of values on a GPIO handle
 * @values: when getting the state of lines this contains the current
 * state of a line, when setting the state of lines these should contain
 * the desired target state
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_values instead.
 */
struct gpiohandle_data {
	__u8 values[GPIOHANDLES_MAX];
};

/* Eventrequest flags */
#define GPIOEVENT_REQUEST_RISING_EDGE	(1UL << 0)
#define GPIOEVENT_REQUEST_FALLING_EDGE	(1UL << 1)
#define GPIOEVENT_REQUEST_BOTH_EDGES	((1UL << 0) | (1UL << 1))

/**
 * struct gpioevent_request - Information about a GPIO event request
 * @lineoffset: the desired line to subscribe to events from, specified by
 * offset index for the associated GPIO device
 * @handleflags: desired handle flags for the desired GPIO line, such as
 * GPIOHANDLE_REQUEST_ACTIVE_LOW or GPIOHANDLE_REQUEST_OPEN_DRAIN
 * @eventflags: desired flags for the desired GPIO event line, such as
 * GPIOEVENT_REQUEST_RISING_EDGE or GPIOEVENT_REQUEST_FALLING_EDGE
 * @consumer_label: a desired consumer label for the selected GPIO line(s)
 * such as "my-listener"
 * @fd: if successful this field will contain a valid anonymous file handle
 * after a GPIO_GET_LINEEVENT_IOCTL operation, zero or negative value
 * means error
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_request instead.
 */
struct gpioevent_request {
	__u32 lineoffset;
	__u32 handleflags;
	__u32 eventflags;
	char consumer_label[GPIO_MAX_NAME_SIZE];
	int fd;
};

/**
 * GPIO event types
 */
#define GPIOEVENT_EVENT_RISING_EDGE 0x01
#define GPIOEVENT_EVENT_FALLING_EDGE 0x02

/**
 * struct gpioevent_data - The actual event being pushed to userspace
 * @timestamp: best estimate of time of event occurrence, in nanoseconds
 * @id: event identifier
 *
 * This struct is part of ABI v1 and is deprecated.
 * Use struct gpio_v2_line_event instead.
 */
struct gpioevent_data {
	__u64 timestamp;
	__u32 id;
};

/*
 * v1 and v2 ioctl()s
 */
#define GPIO_GET_CHIPINFO_IOCTL _IOR(0xB4, 0x01, struct gpiochip_info)
#define GPIO_GET_LINEINFO_UNWATCH_IOCTL _IOWR(0xB4, 0x0C, __u32)

/*
 * v2 ioctl()s
 */
#define GPIO_V2_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x05, struct gpio_v2_line_info)
#define GPIO_V2_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x06, struct gpio_v2_line_info)
#define GPIO_V2_GET_LINE_IOCTL _IOWR(0xB4, 0x07, struct gpio_v2_line_request)
#define GPIO_V2_LINE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0D, struct gpio_v2_line_config)
#define GPIO_V2_LINE_GET_VALUES_IOCTL _IOWR(0xB4, 0x0E, struct gpio_v2_line_values)
#define GPIO_V2_LINE_SET_VALUES_IOCTL _IOWR(0xB4, 0x0F, struct gpio_v2_line_values)

/*
 * v1 ioctl()s
 *
 * These ioctl()s are deprecated.  Use the v2 equivalent instead.
 */
#define GPIO_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x02, struct gpioline_info)
#define GPIO_GET_LINEHANDLE_IOCTL _IOWR(0xB4, 0x03, struct gpiohandle_request)
#define GPIO_GET_LINEEVENT_IOCTL _IOWR(0xB4, 0x04, struct gpioevent_request)
#define GPIOHANDLE_GET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x08, struct gpiohandle_data)
#define GPIOHANDLE_SET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x09, struct gpiohandle_data)
#define GPIOHANDLE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0A, struct gpiohandle_config)
#define GPIO_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x0B, struct gpioline_info)

#endif /* _UAPI_GPIO_H_ */