1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ 2 /* 3 * <linux/gpio.h> - userspace ABI for the GPIO character devices 4 * 5 * Copyright (C) 2016 Linus Walleij 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published by 9 * the Free Software Foundation. 10 */ 11 #ifndef _UAPI_GPIO_H_ 12 #define _UAPI_GPIO_H_ 13 14 #include <linux/const.h> 15 #include <linux/ioctl.h> 16 #include <linux/types.h> 17 18 /* 19 * The maximum size of name and label arrays. 20 * 21 * Must be a multiple of 8 to ensure 32/64-bit alignment of structs. 22 */ 23 #define GPIO_MAX_NAME_SIZE 32 24 25 /** 26 * struct gpiochip_info - Information about a certain GPIO chip 27 * @name: the Linux kernel name of this GPIO chip 28 * @label: a functional name for this GPIO chip, such as a product 29 * number, may be empty (i.e. label[0] == '\0') 30 * @lines: number of GPIO lines on this chip 31 */ 32 struct gpiochip_info { 33 char name[GPIO_MAX_NAME_SIZE]; 34 char label[GPIO_MAX_NAME_SIZE]; 35 __u32 lines; 36 }; 37 38 /* 39 * Maximum number of requested lines. 40 * 41 * Must be no greater than 64, as bitmaps are restricted here to 64-bits 42 * for simplicity, and a multiple of 2 to ensure 32/64-bit alignment of 43 * structs. 44 */ 45 #define GPIO_V2_LINES_MAX 64 46 47 /* 48 * The maximum number of configuration attributes associated with a line 49 * request. 50 */ 51 #define GPIO_V2_LINE_NUM_ATTRS_MAX 10 52 53 /** 54 * enum gpio_v2_line_flag - &struct gpio_v2_line_attribute.flags values 55 * @GPIO_V2_LINE_FLAG_USED: line is not available for request 56 * @GPIO_V2_LINE_FLAG_ACTIVE_LOW: line active state is physical low 57 * @GPIO_V2_LINE_FLAG_INPUT: line is an input 58 * @GPIO_V2_LINE_FLAG_OUTPUT: line is an output 59 * @GPIO_V2_LINE_FLAG_EDGE_RISING: line detects rising (inactive to active) 60 * edges 61 * @GPIO_V2_LINE_FLAG_EDGE_FALLING: line detects falling (active to 62 * inactive) edges 63 * @GPIO_V2_LINE_FLAG_OPEN_DRAIN: line is an open drain output 64 * @GPIO_V2_LINE_FLAG_OPEN_SOURCE: line is an open source output 65 * @GPIO_V2_LINE_FLAG_BIAS_PULL_UP: line has pull-up bias enabled 66 * @GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN: line has pull-down bias enabled 67 * @GPIO_V2_LINE_FLAG_BIAS_DISABLED: line has bias disabled 68 * @GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME: line events contain REALTIME timestamps 69 * @GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE: line events contain timestamps from 70 * hardware timestamp engine 71 */ 72 enum gpio_v2_line_flag { 73 GPIO_V2_LINE_FLAG_USED = _BITULL(0), 74 GPIO_V2_LINE_FLAG_ACTIVE_LOW = _BITULL(1), 75 GPIO_V2_LINE_FLAG_INPUT = _BITULL(2), 76 GPIO_V2_LINE_FLAG_OUTPUT = _BITULL(3), 77 GPIO_V2_LINE_FLAG_EDGE_RISING = _BITULL(4), 78 GPIO_V2_LINE_FLAG_EDGE_FALLING = _BITULL(5), 79 GPIO_V2_LINE_FLAG_OPEN_DRAIN = _BITULL(6), 80 GPIO_V2_LINE_FLAG_OPEN_SOURCE = _BITULL(7), 81 GPIO_V2_LINE_FLAG_BIAS_PULL_UP = _BITULL(8), 82 GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN = _BITULL(9), 83 GPIO_V2_LINE_FLAG_BIAS_DISABLED = _BITULL(10), 84 GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME = _BITULL(11), 85 GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE = _BITULL(12), 86 }; 87 88 /** 89 * struct gpio_v2_line_values - Values of GPIO lines 90 * @bits: a bitmap containing the value of the lines, set to 1 for active 91 * and 0 for inactive. 92 * @mask: a bitmap identifying the lines to get or set, with each bit 93 * number corresponding to the index into &struct 94 * gpio_v2_line_request.offsets. 95 */ 96 struct gpio_v2_line_values { 97 __aligned_u64 bits; 98 __aligned_u64 mask; 99 }; 100 101 /** 102 * enum gpio_v2_line_attr_id - &struct gpio_v2_line_attribute.id values 103 * identifying which field of the attribute union is in use. 104 * @GPIO_V2_LINE_ATTR_ID_FLAGS: flags field is in use 105 * @GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES: values field is in use 106 * @GPIO_V2_LINE_ATTR_ID_DEBOUNCE: debounce_period_us field is in use 107 */ 108 enum gpio_v2_line_attr_id { 109 GPIO_V2_LINE_ATTR_ID_FLAGS = 1, 110 GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES = 2, 111 GPIO_V2_LINE_ATTR_ID_DEBOUNCE = 3, 112 }; 113 114 /** 115 * struct gpio_v2_line_attribute - a configurable attribute of a line 116 * @id: attribute identifier with value from &enum gpio_v2_line_attr_id 117 * @padding: reserved for future use and must be zero filled 118 * @flags: if id is %GPIO_V2_LINE_ATTR_ID_FLAGS, the flags for the GPIO 119 * line, with values from &enum gpio_v2_line_flag, such as 120 * %GPIO_V2_LINE_FLAG_ACTIVE_LOW, %GPIO_V2_LINE_FLAG_OUTPUT etc, added 121 * together. This overrides the default flags contained in the &struct 122 * gpio_v2_line_config for the associated line. 123 * @values: if id is %GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES, a bitmap 124 * containing the values to which the lines will be set, with each bit 125 * number corresponding to the index into &struct 126 * gpio_v2_line_request.offsets. 127 * @debounce_period_us: if id is %GPIO_V2_LINE_ATTR_ID_DEBOUNCE, the 128 * desired debounce period, in microseconds 129 */ 130 struct gpio_v2_line_attribute { 131 __u32 id; 132 __u32 padding; 133 union { 134 __aligned_u64 flags; 135 __aligned_u64 values; 136 __u32 debounce_period_us; 137 }; 138 }; 139 140 /** 141 * struct gpio_v2_line_config_attribute - a configuration attribute 142 * associated with one or more of the requested lines. 143 * @attr: the configurable attribute 144 * @mask: a bitmap identifying the lines to which the attribute applies, 145 * with each bit number corresponding to the index into &struct 146 * gpio_v2_line_request.offsets. 147 */ 148 struct gpio_v2_line_config_attribute { 149 struct gpio_v2_line_attribute attr; 150 __aligned_u64 mask; 151 }; 152 153 /** 154 * struct gpio_v2_line_config - Configuration for GPIO lines 155 * @flags: flags for the GPIO lines, with values from &enum 156 * gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW, 157 * %GPIO_V2_LINE_FLAG_OUTPUT etc, added together. This is the default for 158 * all requested lines but may be overridden for particular lines using 159 * @attrs. 160 * @num_attrs: the number of attributes in @attrs 161 * @padding: reserved for future use and must be zero filled 162 * @attrs: the configuration attributes associated with the requested 163 * lines. Any attribute should only be associated with a particular line 164 * once. If an attribute is associated with a line multiple times then the 165 * first occurrence (i.e. lowest index) has precedence. 166 */ 167 struct gpio_v2_line_config { 168 __aligned_u64 flags; 169 __u32 num_attrs; 170 /* Pad to fill implicit padding and reserve space for future use. */ 171 __u32 padding[5]; 172 struct gpio_v2_line_config_attribute attrs[GPIO_V2_LINE_NUM_ATTRS_MAX]; 173 }; 174 175 /** 176 * struct gpio_v2_line_request - Information about a request for GPIO lines 177 * @offsets: an array of desired lines, specified by offset index for the 178 * associated GPIO chip 179 * @consumer: a desired consumer label for the selected GPIO lines such as 180 * "my-bitbanged-relay" 181 * @config: requested configuration for the lines. 182 * @num_lines: number of lines requested in this request, i.e. the number 183 * of valid fields in the %GPIO_V2_LINES_MAX sized arrays, set to 1 to 184 * request a single line 185 * @event_buffer_size: a suggested minimum number of line events that the 186 * kernel should buffer. This is only relevant if edge detection is 187 * enabled in the configuration. Note that this is only a suggested value 188 * and the kernel may allocate a larger buffer or cap the size of the 189 * buffer. If this field is zero then the buffer size defaults to a minimum 190 * of @num_lines * 16. 191 * @padding: reserved for future use and must be zero filled 192 * @fd: if successful this field will contain a valid anonymous file handle 193 * after a %GPIO_GET_LINE_IOCTL operation, zero or negative value means 194 * error 195 */ 196 struct gpio_v2_line_request { 197 __u32 offsets[GPIO_V2_LINES_MAX]; 198 char consumer[GPIO_MAX_NAME_SIZE]; 199 struct gpio_v2_line_config config; 200 __u32 num_lines; 201 __u32 event_buffer_size; 202 /* Pad to fill implicit padding and reserve space for future use. */ 203 __u32 padding[5]; 204 __s32 fd; 205 }; 206 207 /** 208 * struct gpio_v2_line_info - Information about a certain GPIO line 209 * @name: the name of this GPIO line, such as the output pin of the line on 210 * the chip, a rail or a pin header name on a board, as specified by the 211 * GPIO chip, may be empty (i.e. name[0] == '\0') 212 * @consumer: a functional name for the consumer of this GPIO line as set 213 * by whatever is using it, will be empty if there is no current user but 214 * may also be empty if the consumer doesn't set this up 215 * @offset: the local offset on this GPIO chip, fill this in when 216 * requesting the line information from the kernel 217 * @num_attrs: the number of attributes in @attrs 218 * @flags: flags for this GPIO line, with values from &enum 219 * gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW, 220 * %GPIO_V2_LINE_FLAG_OUTPUT etc, added together. 221 * @attrs: the configuration attributes associated with the line 222 * @padding: reserved for future use 223 */ 224 struct gpio_v2_line_info { 225 char name[GPIO_MAX_NAME_SIZE]; 226 char consumer[GPIO_MAX_NAME_SIZE]; 227 __u32 offset; 228 __u32 num_attrs; 229 __aligned_u64 flags; 230 struct gpio_v2_line_attribute attrs[GPIO_V2_LINE_NUM_ATTRS_MAX]; 231 /* Space reserved for future use. */ 232 __u32 padding[4]; 233 }; 234 235 /** 236 * enum gpio_v2_line_changed_type - &struct gpio_v2_line_changed.event_type 237 * values 238 * @GPIO_V2_LINE_CHANGED_REQUESTED: line has been requested 239 * @GPIO_V2_LINE_CHANGED_RELEASED: line has been released 240 * @GPIO_V2_LINE_CHANGED_CONFIG: line has been reconfigured 241 */ 242 enum gpio_v2_line_changed_type { 243 GPIO_V2_LINE_CHANGED_REQUESTED = 1, 244 GPIO_V2_LINE_CHANGED_RELEASED = 2, 245 GPIO_V2_LINE_CHANGED_CONFIG = 3, 246 }; 247 248 /** 249 * struct gpio_v2_line_info_changed - Information about a change in status 250 * of a GPIO line 251 * @info: updated line information 252 * @timestamp_ns: estimate of time of status change occurrence, in nanoseconds 253 * @event_type: the type of change with a value from &enum 254 * gpio_v2_line_changed_type 255 * @padding: reserved for future use 256 */ 257 struct gpio_v2_line_info_changed { 258 struct gpio_v2_line_info info; 259 __aligned_u64 timestamp_ns; 260 __u32 event_type; 261 /* Pad struct to 64-bit boundary and reserve space for future use. */ 262 __u32 padding[5]; 263 }; 264 265 /** 266 * enum gpio_v2_line_event_id - &struct gpio_v2_line_event.id values 267 * @GPIO_V2_LINE_EVENT_RISING_EDGE: event triggered by a rising edge 268 * @GPIO_V2_LINE_EVENT_FALLING_EDGE: event triggered by a falling edge 269 */ 270 enum gpio_v2_line_event_id { 271 GPIO_V2_LINE_EVENT_RISING_EDGE = 1, 272 GPIO_V2_LINE_EVENT_FALLING_EDGE = 2, 273 }; 274 275 /** 276 * struct gpio_v2_line_event - The actual event being pushed to userspace 277 * @timestamp_ns: best estimate of time of event occurrence, in nanoseconds. 278 * @id: event identifier with value from &enum gpio_v2_line_event_id 279 * @offset: the offset of the line that triggered the event 280 * @seqno: the sequence number for this event in the sequence of events for 281 * all the lines in this line request 282 * @line_seqno: the sequence number for this event in the sequence of 283 * events on this particular line 284 * @padding: reserved for future use 285 * 286 * By default the @timestamp_ns is read from %CLOCK_MONOTONIC and is 287 * intended to allow the accurate measurement of the time between events. 288 * It does not provide the wall-clock time. 289 * 290 * If the %GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME flag is set then the 291 * @timestamp_ns is read from %CLOCK_REALTIME. 292 */ 293 struct gpio_v2_line_event { 294 __aligned_u64 timestamp_ns; 295 __u32 id; 296 __u32 offset; 297 __u32 seqno; 298 __u32 line_seqno; 299 /* Space reserved for future use. */ 300 __u32 padding[6]; 301 }; 302 303 /* 304 * ABI v1 305 * 306 * This version of the ABI is deprecated. 307 * Use the latest version of the ABI, defined above, instead. 308 */ 309 310 /* Informational flags */ 311 #define GPIOLINE_FLAG_KERNEL (1UL << 0) /* Line used by the kernel */ 312 #define GPIOLINE_FLAG_IS_OUT (1UL << 1) 313 #define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2) 314 #define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3) 315 #define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4) 316 #define GPIOLINE_FLAG_BIAS_PULL_UP (1UL << 5) 317 #define GPIOLINE_FLAG_BIAS_PULL_DOWN (1UL << 6) 318 #define GPIOLINE_FLAG_BIAS_DISABLE (1UL << 7) 319 320 /** 321 * struct gpioline_info - Information about a certain GPIO line 322 * @line_offset: the local offset on this GPIO device, fill this in when 323 * requesting the line information from the kernel 324 * @flags: various flags for this line 325 * @name: the name of this GPIO line, such as the output pin of the line on the 326 * chip, a rail or a pin header name on a board, as specified by the gpio 327 * chip, may be empty (i.e. name[0] == '\0') 328 * @consumer: a functional name for the consumer of this GPIO line as set by 329 * whatever is using it, will be empty if there is no current user but may 330 * also be empty if the consumer doesn't set this up 331 * 332 * Note: This struct is part of ABI v1 and is deprecated. 333 * Use &struct gpio_v2_line_info instead. 334 */ 335 struct gpioline_info { 336 __u32 line_offset; 337 __u32 flags; 338 char name[GPIO_MAX_NAME_SIZE]; 339 char consumer[GPIO_MAX_NAME_SIZE]; 340 }; 341 342 /* Maximum number of requested handles */ 343 #define GPIOHANDLES_MAX 64 344 345 /* Possible line status change events */ 346 enum { 347 GPIOLINE_CHANGED_REQUESTED = 1, 348 GPIOLINE_CHANGED_RELEASED, 349 GPIOLINE_CHANGED_CONFIG, 350 }; 351 352 /** 353 * struct gpioline_info_changed - Information about a change in status 354 * of a GPIO line 355 * @info: updated line information 356 * @timestamp: estimate of time of status change occurrence, in nanoseconds 357 * @event_type: one of %GPIOLINE_CHANGED_REQUESTED, 358 * %GPIOLINE_CHANGED_RELEASED and %GPIOLINE_CHANGED_CONFIG 359 * @padding: reserved for future use 360 * 361 * The &struct gpioline_info embedded here has 32-bit alignment on its own, 362 * but it works fine with 64-bit alignment too. With its 72 byte size, we can 363 * guarantee there are no implicit holes between it and subsequent members. 364 * The 20-byte padding at the end makes sure we don't add any implicit padding 365 * at the end of the structure on 64-bit architectures. 366 * 367 * Note: This struct is part of ABI v1 and is deprecated. 368 * Use &struct gpio_v2_line_info_changed instead. 369 */ 370 struct gpioline_info_changed { 371 struct gpioline_info info; 372 __u64 timestamp; 373 __u32 event_type; 374 __u32 padding[5]; /* for future use */ 375 }; 376 377 /* Linerequest flags */ 378 #define GPIOHANDLE_REQUEST_INPUT (1UL << 0) 379 #define GPIOHANDLE_REQUEST_OUTPUT (1UL << 1) 380 #define GPIOHANDLE_REQUEST_ACTIVE_LOW (1UL << 2) 381 #define GPIOHANDLE_REQUEST_OPEN_DRAIN (1UL << 3) 382 #define GPIOHANDLE_REQUEST_OPEN_SOURCE (1UL << 4) 383 #define GPIOHANDLE_REQUEST_BIAS_PULL_UP (1UL << 5) 384 #define GPIOHANDLE_REQUEST_BIAS_PULL_DOWN (1UL << 6) 385 #define GPIOHANDLE_REQUEST_BIAS_DISABLE (1UL << 7) 386 387 /** 388 * struct gpiohandle_request - Information about a GPIO handle request 389 * @lineoffsets: an array of desired lines, specified by offset index for the 390 * associated GPIO device 391 * @flags: desired flags for the desired GPIO lines, such as 392 * %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added 393 * together. Note that even if multiple lines are requested, the same flags 394 * must be applicable to all of them, if you want lines with individual 395 * flags set, request them one by one. It is possible to select 396 * a batch of input or output lines, but they must all have the same 397 * characteristics, i.e. all inputs or all outputs, all active low etc 398 * @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set for a requested 399 * line, this specifies the default output value, should be 0 (low) or 400 * 1 (high), anything else than 0 or 1 will be interpreted as 1 (high) 401 * @consumer_label: a desired consumer label for the selected GPIO line(s) 402 * such as "my-bitbanged-relay" 403 * @lines: number of lines requested in this request, i.e. the number of 404 * valid fields in the above arrays, set to 1 to request a single line 405 * @fd: if successful this field will contain a valid anonymous file handle 406 * after a %GPIO_GET_LINEHANDLE_IOCTL operation, zero or negative value 407 * means error 408 * 409 * Note: This struct is part of ABI v1 and is deprecated. 410 * Use &struct gpio_v2_line_request instead. 411 */ 412 struct gpiohandle_request { 413 __u32 lineoffsets[GPIOHANDLES_MAX]; 414 __u32 flags; 415 __u8 default_values[GPIOHANDLES_MAX]; 416 char consumer_label[GPIO_MAX_NAME_SIZE]; 417 __u32 lines; 418 int fd; 419 }; 420 421 /** 422 * struct gpiohandle_config - Configuration for a GPIO handle request 423 * @flags: updated flags for the requested GPIO lines, such as 424 * %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added 425 * together 426 * @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set in flags, 427 * this specifies the default output value, should be 0 (low) or 428 * 1 (high), anything else than 0 or 1 will be interpreted as 1 (high) 429 * @padding: reserved for future use and should be zero filled 430 * 431 * Note: This struct is part of ABI v1 and is deprecated. 432 * Use &struct gpio_v2_line_config instead. 433 */ 434 struct gpiohandle_config { 435 __u32 flags; 436 __u8 default_values[GPIOHANDLES_MAX]; 437 __u32 padding[4]; /* padding for future use */ 438 }; 439 440 /** 441 * struct gpiohandle_data - Information of values on a GPIO handle 442 * @values: when getting the state of lines this contains the current 443 * state of a line, when setting the state of lines these should contain 444 * the desired target state 445 * 446 * Note: This struct is part of ABI v1 and is deprecated. 447 * Use &struct gpio_v2_line_values instead. 448 */ 449 struct gpiohandle_data { 450 __u8 values[GPIOHANDLES_MAX]; 451 }; 452 453 /* Eventrequest flags */ 454 #define GPIOEVENT_REQUEST_RISING_EDGE (1UL << 0) 455 #define GPIOEVENT_REQUEST_FALLING_EDGE (1UL << 1) 456 #define GPIOEVENT_REQUEST_BOTH_EDGES ((1UL << 0) | (1UL << 1)) 457 458 /** 459 * struct gpioevent_request - Information about a GPIO event request 460 * @lineoffset: the desired line to subscribe to events from, specified by 461 * offset index for the associated GPIO device 462 * @handleflags: desired handle flags for the desired GPIO line, such as 463 * %GPIOHANDLE_REQUEST_ACTIVE_LOW or %GPIOHANDLE_REQUEST_OPEN_DRAIN 464 * @eventflags: desired flags for the desired GPIO event line, such as 465 * %GPIOEVENT_REQUEST_RISING_EDGE or %GPIOEVENT_REQUEST_FALLING_EDGE 466 * @consumer_label: a desired consumer label for the selected GPIO line(s) 467 * such as "my-listener" 468 * @fd: if successful this field will contain a valid anonymous file handle 469 * after a %GPIO_GET_LINEEVENT_IOCTL operation, zero or negative value 470 * means error 471 * 472 * Note: This struct is part of ABI v1 and is deprecated. 473 * Use &struct gpio_v2_line_request instead. 474 */ 475 struct gpioevent_request { 476 __u32 lineoffset; 477 __u32 handleflags; 478 __u32 eventflags; 479 char consumer_label[GPIO_MAX_NAME_SIZE]; 480 int fd; 481 }; 482 483 /* 484 * GPIO event types 485 */ 486 #define GPIOEVENT_EVENT_RISING_EDGE 0x01 487 #define GPIOEVENT_EVENT_FALLING_EDGE 0x02 488 489 /** 490 * struct gpioevent_data - The actual event being pushed to userspace 491 * @timestamp: best estimate of time of event occurrence, in nanoseconds 492 * @id: event identifier 493 * 494 * Note: This struct is part of ABI v1 and is deprecated. 495 * Use &struct gpio_v2_line_event instead. 496 */ 497 struct gpioevent_data { 498 __u64 timestamp; 499 __u32 id; 500 }; 501 502 /* 503 * v1 and v2 ioctl()s 504 */ 505 #define GPIO_GET_CHIPINFO_IOCTL _IOR(0xB4, 0x01, struct gpiochip_info) 506 #define GPIO_GET_LINEINFO_UNWATCH_IOCTL _IOWR(0xB4, 0x0C, __u32) 507 508 /* 509 * v2 ioctl()s 510 */ 511 #define GPIO_V2_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x05, struct gpio_v2_line_info) 512 #define GPIO_V2_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x06, struct gpio_v2_line_info) 513 #define GPIO_V2_GET_LINE_IOCTL _IOWR(0xB4, 0x07, struct gpio_v2_line_request) 514 #define GPIO_V2_LINE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0D, struct gpio_v2_line_config) 515 #define GPIO_V2_LINE_GET_VALUES_IOCTL _IOWR(0xB4, 0x0E, struct gpio_v2_line_values) 516 #define GPIO_V2_LINE_SET_VALUES_IOCTL _IOWR(0xB4, 0x0F, struct gpio_v2_line_values) 517 518 /* 519 * v1 ioctl()s 520 * 521 * These ioctl()s are deprecated. Use the v2 equivalent instead. 522 */ 523 #define GPIO_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x02, struct gpioline_info) 524 #define GPIO_GET_LINEHANDLE_IOCTL _IOWR(0xB4, 0x03, struct gpiohandle_request) 525 #define GPIO_GET_LINEEVENT_IOCTL _IOWR(0xB4, 0x04, struct gpioevent_request) 526 #define GPIOHANDLE_GET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x08, struct gpiohandle_data) 527 #define GPIOHANDLE_SET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x09, struct gpiohandle_data) 528 #define GPIOHANDLE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0A, struct gpiohandle_config) 529 #define GPIO_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x0B, struct gpioline_info) 530 531 #endif /* _UAPI_GPIO_H_ */ 532