gpio.h (20296B) - Raw
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 _GPIO_H_ 12 #define _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 * the hardware timestamping engine (HTE) subsystem 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: after a successful %GPIO_V2_GET_LINE_IOCTL operation, contains 193 * a valid anonymous file descriptor representing the request 194 */ 195 struct gpio_v2_line_request { 196 __u32 offsets[GPIO_V2_LINES_MAX]; 197 char consumer[GPIO_MAX_NAME_SIZE]; 198 struct gpio_v2_line_config config; 199 __u32 num_lines; 200 __u32 event_buffer_size; 201 /* Pad to fill implicit padding and reserve space for future use. */ 202 __u32 padding[5]; 203 __s32 fd; 204 }; 205 206 /** 207 * struct gpio_v2_line_info - Information about a certain GPIO line 208 * @name: the name of this GPIO line, such as the output pin of the line on 209 * the chip, a rail or a pin header name on a board, as specified by the 210 * GPIO chip, may be empty (i.e. name[0] == '\0') 211 * @consumer: a functional name for the consumer of this GPIO line as set 212 * by whatever is using it, will be empty if there is no current user but 213 * may also be empty if the consumer doesn't set this up 214 * @offset: the local offset on this GPIO chip, fill this in when 215 * requesting the line information from the kernel 216 * @num_attrs: the number of attributes in @attrs 217 * @flags: flags for this GPIO line, with values from &enum 218 * gpio_v2_line_flag, such as %GPIO_V2_LINE_FLAG_ACTIVE_LOW, 219 * %GPIO_V2_LINE_FLAG_OUTPUT etc, added together 220 * @attrs: the configuration attributes associated with the line 221 * @padding: reserved for future use 222 */ 223 struct gpio_v2_line_info { 224 char name[GPIO_MAX_NAME_SIZE]; 225 char consumer[GPIO_MAX_NAME_SIZE]; 226 __u32 offset; 227 __u32 num_attrs; 228 __aligned_u64 flags; 229 struct gpio_v2_line_attribute attrs[GPIO_V2_LINE_NUM_ATTRS_MAX]; 230 /* Space reserved for future use. */ 231 __u32 padding[4]; 232 }; 233 234 /** 235 * enum gpio_v2_line_changed_type - &struct gpio_v2_line_changed.event_type 236 * values 237 * @GPIO_V2_LINE_CHANGED_REQUESTED: line has been requested 238 * @GPIO_V2_LINE_CHANGED_RELEASED: line has been released 239 * @GPIO_V2_LINE_CHANGED_CONFIG: line has been reconfigured 240 */ 241 enum gpio_v2_line_changed_type { 242 GPIO_V2_LINE_CHANGED_REQUESTED = 1, 243 GPIO_V2_LINE_CHANGED_RELEASED = 2, 244 GPIO_V2_LINE_CHANGED_CONFIG = 3, 245 }; 246 247 /** 248 * struct gpio_v2_line_info_changed - Information about a change in status 249 * of a GPIO line 250 * @info: updated line information 251 * @timestamp_ns: estimate of time of status change occurrence, in nanoseconds 252 * @event_type: the type of change with a value from &enum 253 * gpio_v2_line_changed_type 254 * @padding: reserved for future use 255 */ 256 struct gpio_v2_line_info_changed { 257 struct gpio_v2_line_info info; 258 __aligned_u64 timestamp_ns; 259 __u32 event_type; 260 /* Pad struct to 64-bit boundary and reserve space for future use. */ 261 __u32 padding[5]; 262 }; 263 264 /** 265 * enum gpio_v2_line_event_id - &struct gpio_v2_line_event.id values 266 * @GPIO_V2_LINE_EVENT_RISING_EDGE: event triggered by a rising edge 267 * @GPIO_V2_LINE_EVENT_FALLING_EDGE: event triggered by a falling edge 268 */ 269 enum gpio_v2_line_event_id { 270 GPIO_V2_LINE_EVENT_RISING_EDGE = 1, 271 GPIO_V2_LINE_EVENT_FALLING_EDGE = 2, 272 }; 273 274 /** 275 * struct gpio_v2_line_event - The actual event being pushed to userspace 276 * @timestamp_ns: best estimate of time of event occurrence, in nanoseconds 277 * @id: event identifier with value from &enum gpio_v2_line_event_id 278 * @offset: the offset of the line that triggered the event 279 * @seqno: the sequence number for this event in the sequence of events for 280 * all the lines in this line request 281 * @line_seqno: the sequence number for this event in the sequence of 282 * events on this particular line 283 * @padding: reserved for future use 284 * 285 * By default the @timestamp_ns is read from %CLOCK_MONOTONIC and is 286 * intended to allow the accurate measurement of the time between events. 287 * It does not provide the wall-clock time. 288 * 289 * If the %GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME flag is set then the 290 * @timestamp_ns is read from %CLOCK_REALTIME. 291 * 292 * If the %GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE flag is set then the 293 * @timestamp_ns is provided by the hardware timestamping engine (HTE) 294 * subsystem. 295 */ 296 struct gpio_v2_line_event { 297 __aligned_u64 timestamp_ns; 298 __u32 id; 299 __u32 offset; 300 __u32 seqno; 301 __u32 line_seqno; 302 /* Space reserved for future use. */ 303 __u32 padding[6]; 304 }; 305 306 /* 307 * ABI v1 308 * 309 * This version of the ABI is deprecated. 310 * Use the latest version of the ABI, defined above, instead. 311 */ 312 313 /* Informational flags */ 314 #define GPIOLINE_FLAG_KERNEL (1UL << 0) /* Line used by the kernel */ 315 #define GPIOLINE_FLAG_IS_OUT (1UL << 1) 316 #define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2) 317 #define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3) 318 #define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4) 319 #define GPIOLINE_FLAG_BIAS_PULL_UP (1UL << 5) 320 #define GPIOLINE_FLAG_BIAS_PULL_DOWN (1UL << 6) 321 #define GPIOLINE_FLAG_BIAS_DISABLE (1UL << 7) 322 323 /** 324 * struct gpioline_info - Information about a certain GPIO line 325 * @line_offset: the local offset on this GPIO device, fill this in when 326 * requesting the line information from the kernel 327 * @flags: various flags for this line 328 * @name: the name of this GPIO line, such as the output pin of the line on the 329 * chip, a rail or a pin header name on a board, as specified by the gpio 330 * chip, may be empty (i.e. name[0] == '\0') 331 * @consumer: a functional name for the consumer of this GPIO line as set by 332 * whatever is using it, will be empty if there is no current user but may 333 * also be empty if the consumer doesn't set this up 334 * 335 * Note: This struct is part of ABI v1 and is deprecated. 336 * Use ABI v2 and &struct gpio_v2_line_info instead. 337 */ 338 struct gpioline_info { 339 __u32 line_offset; 340 __u32 flags; 341 char name[GPIO_MAX_NAME_SIZE]; 342 char consumer[GPIO_MAX_NAME_SIZE]; 343 }; 344 345 /* Maximum number of requested handles */ 346 #define GPIOHANDLES_MAX 64 347 348 /* Possible line status change events */ 349 enum { 350 GPIOLINE_CHANGED_REQUESTED = 1, 351 GPIOLINE_CHANGED_RELEASED, 352 GPIOLINE_CHANGED_CONFIG, 353 }; 354 355 /** 356 * struct gpioline_info_changed - Information about a change in status 357 * of a GPIO line 358 * @info: updated line information 359 * @timestamp: estimate of time of status change occurrence, in nanoseconds 360 * @event_type: one of %GPIOLINE_CHANGED_REQUESTED, 361 * %GPIOLINE_CHANGED_RELEASED and %GPIOLINE_CHANGED_CONFIG 362 * @padding: reserved for future use 363 * 364 * The &struct gpioline_info embedded here has 32-bit alignment on its own, 365 * but it works fine with 64-bit alignment too. With its 72 byte size, we can 366 * guarantee there are no implicit holes between it and subsequent members. 367 * The 20-byte padding at the end makes sure we don't add any implicit padding 368 * at the end of the structure on 64-bit architectures. 369 * 370 * Note: This struct is part of ABI v1 and is deprecated. 371 * Use ABI v2 and &struct gpio_v2_line_info_changed instead. 372 */ 373 struct gpioline_info_changed { 374 struct gpioline_info info; 375 __u64 timestamp; 376 __u32 event_type; 377 __u32 padding[5]; /* for future use */ 378 }; 379 380 /* Linerequest flags */ 381 #define GPIOHANDLE_REQUEST_INPUT (1UL << 0) 382 #define GPIOHANDLE_REQUEST_OUTPUT (1UL << 1) 383 #define GPIOHANDLE_REQUEST_ACTIVE_LOW (1UL << 2) 384 #define GPIOHANDLE_REQUEST_OPEN_DRAIN (1UL << 3) 385 #define GPIOHANDLE_REQUEST_OPEN_SOURCE (1UL << 4) 386 #define GPIOHANDLE_REQUEST_BIAS_PULL_UP (1UL << 5) 387 #define GPIOHANDLE_REQUEST_BIAS_PULL_DOWN (1UL << 6) 388 #define GPIOHANDLE_REQUEST_BIAS_DISABLE (1UL << 7) 389 390 /** 391 * struct gpiohandle_request - Information about a GPIO handle request 392 * @lineoffsets: an array of desired lines, specified by offset index for the 393 * associated GPIO device 394 * @flags: desired flags for the desired GPIO lines, such as 395 * %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added 396 * together. Note that even if multiple lines are requested, the same flags 397 * must be applicable to all of them, if you want lines with individual 398 * flags set, request them one by one. It is possible to select 399 * a batch of input or output lines, but they must all have the same 400 * characteristics, i.e. all inputs or all outputs, all active low etc 401 * @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set for a requested 402 * line, this specifies the default output value, should be 0 (inactive) or 403 * 1 (active). Anything other than 0 or 1 will be interpreted as active. 404 * @consumer_label: a desired consumer label for the selected GPIO line(s) 405 * such as "my-bitbanged-relay" 406 * @lines: number of lines requested in this request, i.e. the number of 407 * valid fields in the above arrays, set to 1 to request a single line 408 * @fd: after a successful %GPIO_GET_LINEHANDLE_IOCTL operation, contains 409 * a valid anonymous file descriptor representing the request 410 * 411 * Note: This struct is part of ABI v1 and is deprecated. 412 * Use ABI v2 and &struct gpio_v2_line_request instead. 413 */ 414 struct gpiohandle_request { 415 __u32 lineoffsets[GPIOHANDLES_MAX]; 416 __u32 flags; 417 __u8 default_values[GPIOHANDLES_MAX]; 418 char consumer_label[GPIO_MAX_NAME_SIZE]; 419 __u32 lines; 420 int fd; 421 }; 422 423 /** 424 * struct gpiohandle_config - Configuration for a GPIO handle request 425 * @flags: updated flags for the requested GPIO lines, such as 426 * %GPIOHANDLE_REQUEST_OUTPUT, %GPIOHANDLE_REQUEST_ACTIVE_LOW etc, added 427 * together 428 * @default_values: if the %GPIOHANDLE_REQUEST_OUTPUT is set in flags, 429 * this specifies the default output value, should be 0 (inactive) or 430 * 1 (active). Anything other than 0 or 1 will be interpreted as active. 431 * @padding: reserved for future use and should be zero filled 432 * 433 * Note: This struct is part of ABI v1 and is deprecated. 434 * Use ABI v2 and &struct gpio_v2_line_config instead. 435 */ 436 struct gpiohandle_config { 437 __u32 flags; 438 __u8 default_values[GPIOHANDLES_MAX]; 439 __u32 padding[4]; /* padding for future use */ 440 }; 441 442 /** 443 * struct gpiohandle_data - Information of values on a GPIO handle 444 * @values: when getting the state of lines this contains the current 445 * state of a line, when setting the state of lines these should contain 446 * the desired target state. States are 0 (inactive) or 1 (active). 447 * When setting, anything other than 0 or 1 will be interpreted as active. 448 * 449 * Note: This struct is part of ABI v1 and is deprecated. 450 * Use ABI v2 and &struct gpio_v2_line_values instead. 451 */ 452 struct gpiohandle_data { 453 __u8 values[GPIOHANDLES_MAX]; 454 }; 455 456 /* Eventrequest flags */ 457 #define GPIOEVENT_REQUEST_RISING_EDGE (1UL << 0) 458 #define GPIOEVENT_REQUEST_FALLING_EDGE (1UL << 1) 459 #define GPIOEVENT_REQUEST_BOTH_EDGES ((1UL << 0) | (1UL << 1)) 460 461 /** 462 * struct gpioevent_request - Information about a GPIO event request 463 * @lineoffset: the desired line to subscribe to events from, specified by 464 * offset index for the associated GPIO device 465 * @handleflags: desired handle flags for the desired GPIO line, such as 466 * %GPIOHANDLE_REQUEST_ACTIVE_LOW or %GPIOHANDLE_REQUEST_OPEN_DRAIN 467 * @eventflags: desired flags for the desired GPIO event line, such as 468 * %GPIOEVENT_REQUEST_RISING_EDGE or %GPIOEVENT_REQUEST_FALLING_EDGE 469 * @consumer_label: a desired consumer label for the selected GPIO line(s) 470 * such as "my-listener" 471 * @fd: after a successful %GPIO_GET_LINEEVENT_IOCTL operation, contains a 472 * valid anonymous file descriptor representing the request 473 * 474 * Note: This struct is part of ABI v1 and is deprecated. 475 * Use ABI v2 and &struct gpio_v2_line_request instead. 476 */ 477 struct gpioevent_request { 478 __u32 lineoffset; 479 __u32 handleflags; 480 __u32 eventflags; 481 char consumer_label[GPIO_MAX_NAME_SIZE]; 482 int fd; 483 }; 484 485 /* 486 * GPIO event types 487 */ 488 #define GPIOEVENT_EVENT_RISING_EDGE 0x01 489 #define GPIOEVENT_EVENT_FALLING_EDGE 0x02 490 491 /** 492 * struct gpioevent_data - The actual event being pushed to userspace 493 * @timestamp: best estimate of time of event occurrence, in nanoseconds 494 * @id: event identifier, one of %GPIOEVENT_EVENT_RISING_EDGE or 495 * %GPIOEVENT_EVENT_FALLING_EDGE 496 * 497 * Note: This struct is part of ABI v1 and is deprecated. 498 * Use ABI v2 and &struct gpio_v2_line_event instead. 499 */ 500 struct gpioevent_data { 501 __u64 timestamp; 502 __u32 id; 503 }; 504 505 /* 506 * v1 and v2 ioctl()s 507 */ 508 #define GPIO_GET_CHIPINFO_IOCTL _IOR(0xB4, 0x01, struct gpiochip_info) 509 #define GPIO_GET_LINEINFO_UNWATCH_IOCTL _IOWR(0xB4, 0x0C, __u32) 510 511 /* 512 * v2 ioctl()s 513 */ 514 #define GPIO_V2_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x05, struct gpio_v2_line_info) 515 #define GPIO_V2_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x06, struct gpio_v2_line_info) 516 #define GPIO_V2_GET_LINE_IOCTL _IOWR(0xB4, 0x07, struct gpio_v2_line_request) 517 #define GPIO_V2_LINE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0D, struct gpio_v2_line_config) 518 #define GPIO_V2_LINE_GET_VALUES_IOCTL _IOWR(0xB4, 0x0E, struct gpio_v2_line_values) 519 #define GPIO_V2_LINE_SET_VALUES_IOCTL _IOWR(0xB4, 0x0F, struct gpio_v2_line_values) 520 521 /* 522 * v1 ioctl()s 523 * 524 * These ioctl()s are deprecated. Use the v2 equivalent instead. 525 */ 526 #define GPIO_GET_LINEINFO_IOCTL _IOWR(0xB4, 0x02, struct gpioline_info) 527 #define GPIO_GET_LINEHANDLE_IOCTL _IOWR(0xB4, 0x03, struct gpiohandle_request) 528 #define GPIO_GET_LINEEVENT_IOCTL _IOWR(0xB4, 0x04, struct gpioevent_request) 529 #define GPIOHANDLE_GET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x08, struct gpiohandle_data) 530 #define GPIOHANDLE_SET_LINE_VALUES_IOCTL _IOWR(0xB4, 0x09, struct gpiohandle_data) 531 #define GPIOHANDLE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0A, struct gpiohandle_config) 532 #define GPIO_GET_LINEINFO_WATCH_IOCTL _IOWR(0xB4, 0x0B, struct gpioline_info) 533 534 #endif /* _GPIO_H_ */