Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/iicbus/iichid.c
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1 /*- 2 * Copyright (c) 2018-2019 Marc Priggemeyer <marc.priggemeyer@gmail.com> 3 * Copyright (c) 2019-2020 Vladimir Kondratyev <wulf@FreeBSD.org> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * I2C HID transport backend. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include "opt_hid.h" 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/callout.h> 39 #include <sys/endian.h> 40 #include <sys/kernel.h> 41 #include <sys/lock.h> 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/rman.h> 45 #include <sys/sysctl.h> 46 #include <sys/systm.h> 47 #include <sys/taskqueue.h> 48 49 #include <machine/resource.h> 50 51 #include <contrib/dev/acpica/include/acpi.h> 52 #include <contrib/dev/acpica/include/accommon.h> 53 #include <dev/acpica/acpivar.h> 54 55 #include <dev/evdev/input.h> 56 57 #include <dev/hid/hid.h> 58 #include <dev/hid/hidquirk.h> 59 60 #include <dev/iicbus/iic.h> 61 #include <dev/iicbus/iicbus.h> 62 #include <dev/iicbus/iiconf.h> 63 64 #include "hid_if.h" 65 66 #ifdef IICHID_DEBUG 67 static int iichid_debug = 0; 68 69 static SYSCTL_NODE(_hw, OID_AUTO, iichid, CTLFLAG_RW, 0, "I2C HID"); 70 SYSCTL_INT(_hw_iichid, OID_AUTO, debug, CTLFLAG_RWTUN, 71 &iichid_debug, 1, "Debug level"); 72 73 #define DPRINTFN(sc, n, ...) do { \ 74 if (iichid_debug >= (n)) \ 75 device_printf((sc)->dev, __VA_ARGS__); \ 76 } while (0) 77 #define DPRINTF(sc, ...) DPRINTFN(sc, 1, __VA_ARGS__) 78 #else 79 #define DPRINTFN(...) do {} while (0) 80 #define DPRINTF(...) do {} while (0) 81 #endif 82 83 typedef hid_size_t iichid_size_t; 84 #define IICHID_SIZE_MAX (UINT16_MAX - 2) 85 86 /* 7.2 */ 87 enum { 88 I2C_HID_CMD_DESCR = 0x0, 89 I2C_HID_CMD_RESET = 0x1, 90 I2C_HID_CMD_GET_REPORT = 0x2, 91 I2C_HID_CMD_SET_REPORT = 0x3, 92 I2C_HID_CMD_GET_IDLE = 0x4, 93 I2C_HID_CMD_SET_IDLE = 0x5, 94 I2C_HID_CMD_GET_PROTO = 0x6, 95 I2C_HID_CMD_SET_PROTO = 0x7, 96 I2C_HID_CMD_SET_POWER = 0x8, 97 }; 98 99 #define I2C_HID_POWER_ON 0x0 100 #define I2C_HID_POWER_OFF 0x1 101 102 /* 103 * Since interrupt resource acquisition is not always possible (in case of GPIO 104 * interrupts) iichid now supports a sampling_mode. 105 * Set dev.iichid.<unit>.sampling_rate_slow to a value greater then 0 106 * to activate sampling. A value of 0 is possible but will not reset the 107 * callout and, thereby, disable further report requests. Do not set the 108 * sampling_rate_fast value too high as it may result in periodical lags of 109 * cursor motion. 110 */ 111 #define IICHID_SAMPLING_RATE_FAST 60 112 #define IICHID_SAMPLING_RATE_SLOW 10 113 #define IICHID_SAMPLING_HYSTERESIS 1 114 115 /* 5.1.1 - HID Descriptor Format */ 116 struct i2c_hid_desc { 117 uint16_t wHIDDescLength; 118 uint16_t bcdVersion; 119 uint16_t wReportDescLength; 120 uint16_t wReportDescRegister; 121 uint16_t wInputRegister; 122 uint16_t wMaxInputLength; 123 uint16_t wOutputRegister; 124 uint16_t wMaxOutputLength; 125 uint16_t wCommandRegister; 126 uint16_t wDataRegister; 127 uint16_t wVendorID; 128 uint16_t wProductID; 129 uint16_t wVersionID; 130 uint32_t reserved; 131 } __packed; 132 133 #define IICHID_REG_NONE -1 134 #define IICHID_REG_ACPI (UINT16_MAX + 1) 135 #define IICHID_REG_ELAN 0x0001 136 137 static const struct iichid_id { 138 char *id; 139 int reg; 140 } iichid_ids[] = { 141 { "ELAN0000", IICHID_REG_ELAN }, 142 { "PNP0C50", IICHID_REG_ACPI }, 143 { "ACPI0C50", IICHID_REG_ACPI }, 144 { NULL, 0 }, 145 }; 146 147 enum iichid_powerstate_how { 148 IICHID_PS_NULL, 149 IICHID_PS_ON, 150 IICHID_PS_OFF, 151 }; 152 153 /* 154 * Locking: no internal locks are used. To serialize access to shared members, 155 * external iicbus lock should be taken. That allows to make locking greatly 156 * simple at the cost of running front interrupt handlers with locked bus. 157 */ 158 struct iichid_softc { 159 device_t dev; 160 161 bool probe_done; 162 int probe_result; 163 164 struct hid_device_info hw; 165 uint16_t addr; /* Shifted left by 1 */ 166 struct i2c_hid_desc desc; 167 168 hid_intr_t *intr_handler; 169 void *intr_ctx; 170 uint8_t *intr_buf; 171 iichid_size_t intr_bufsize; 172 173 int irq_rid; 174 struct resource *irq_res; 175 void *irq_cookie; 176 177 #ifdef IICHID_SAMPLING 178 int sampling_rate_slow; /* iicbus lock */ 179 int sampling_rate_fast; 180 int sampling_hysteresis; 181 int missing_samples; /* iicbus lock */ 182 struct timeout_task periodic_task; /* iicbus lock */ 183 bool callout_setup; /* iicbus lock */ 184 struct taskqueue *taskqueue; 185 struct task event_task; 186 #endif 187 188 struct task suspend_task; 189 bool open; /* iicbus lock */ 190 bool suspend; /* iicbus lock */ 191 bool power_on; /* iicbus lock */ 192 }; 193 194 static device_probe_t iichid_probe; 195 static device_attach_t iichid_attach; 196 static device_detach_t iichid_detach; 197 static device_resume_t iichid_resume; 198 static device_suspend_t iichid_suspend; 199 200 static void iichid_suspend_task(void *, int); 201 202 #ifdef IICHID_SAMPLING 203 static int iichid_setup_callout(struct iichid_softc *); 204 static int iichid_reset_callout(struct iichid_softc *); 205 static void iichid_teardown_callout(struct iichid_softc *); 206 #endif 207 208 static inline int 209 acpi_is_iichid(ACPI_HANDLE handle) 210 { 211 const struct iichid_id *ids; 212 UINT32 sta; 213 int reg; 214 215 for (ids = iichid_ids; ids->id != NULL; ids++) { 216 if (acpi_MatchHid(handle, ids->id)) { 217 reg = ids->reg; 218 break; 219 } 220 } 221 if (ids->id == NULL) 222 return (IICHID_REG_NONE); 223 224 /* 225 * If no _STA method or if it failed, then assume that 226 * the device is present. 227 */ 228 if (ACPI_FAILURE(acpi_GetInteger(handle, "_STA", &sta)) || 229 ACPI_DEVICE_PRESENT(sta)) 230 return (reg); 231 232 return (IICHID_REG_NONE); 233 } 234 235 static ACPI_STATUS 236 iichid_get_config_reg(ACPI_HANDLE handle, uint16_t *config_reg) 237 { 238 ACPI_OBJECT *result; 239 ACPI_BUFFER acpi_buf; 240 ACPI_STATUS status; 241 242 /* 243 * function (_DSM) to be evaluated to retrieve the address of 244 * the configuration register of the HID device. 245 */ 246 /* 3cdff6f7-4267-4555-ad05-b30a3d8938de */ 247 static uint8_t dsm_guid[ACPI_UUID_LENGTH] = { 248 0xF7, 0xF6, 0xDF, 0x3C, 0x67, 0x42, 0x55, 0x45, 249 0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE, 250 }; 251 252 status = acpi_EvaluateDSMTyped(handle, dsm_guid, 1, 1, NULL, &acpi_buf, 253 ACPI_TYPE_INTEGER); 254 if (ACPI_FAILURE(status)) { 255 printf("%s: error evaluating _DSM\n", __func__); 256 return (status); 257 } 258 result = (ACPI_OBJECT *) acpi_buf.Pointer; 259 *config_reg = result->Integer.Value & 0xFFFF; 260 261 AcpiOsFree(result); 262 return (status); 263 } 264 265 static int 266 iichid_cmd_read(struct iichid_softc* sc, void *buf, iichid_size_t maxlen, 267 iichid_size_t *actual_len) 268 { 269 /* 270 * 6.1.3 - Retrieval of Input Reports 271 * DEVICE returns the length (2 Bytes) and the entire Input Report. 272 */ 273 uint8_t actbuf[2] = { 0, 0 }; 274 /* Read actual input report length. */ 275 struct iic_msg msgs[] = { 276 { sc->addr, IIC_M_RD | IIC_M_NOSTOP, sizeof(actbuf), actbuf }, 277 }; 278 uint16_t actlen; 279 int error; 280 281 error = iicbus_transfer(sc->dev, msgs, nitems(msgs)); 282 if (error != 0) 283 return (error); 284 285 actlen = actbuf[0] | actbuf[1] << 8; 286 if (actlen <= 2 || actlen == 0xFFFF || maxlen == 0) { 287 /* Read and discard 1 byte to send I2C STOP condition. */ 288 msgs[0] = (struct iic_msg) 289 { sc->addr, IIC_M_RD | IIC_M_NOSTART, 1, actbuf }; 290 actlen = 0; 291 } else { 292 actlen -= 2; 293 if (actlen > maxlen) { 294 DPRINTF(sc, "input report too big. requested=%d " 295 "received=%d\n", maxlen, actlen); 296 actlen = maxlen; 297 } 298 /* Read input report itself. */ 299 msgs[0] = (struct iic_msg) 300 { sc->addr, IIC_M_RD | IIC_M_NOSTART, actlen, buf }; 301 } 302 303 error = iicbus_transfer(sc->dev, msgs, 1); 304 if (error == 0 && actual_len != NULL) 305 *actual_len = actlen; 306 307 DPRINTFN(sc, 5, 308 "%*D - %*D\n", 2, actbuf, " ", msgs[0].len, msgs[0].buf, " "); 309 310 return (error); 311 } 312 313 static int 314 iichid_cmd_write(struct iichid_softc *sc, const void *buf, iichid_size_t len) 315 { 316 /* 6.2.3 - Sending Output Reports. */ 317 uint8_t *cmdreg = (uint8_t *)&sc->desc.wOutputRegister; 318 uint16_t replen = 2 + len; 319 uint8_t cmd[4] = { cmdreg[0], cmdreg[1], replen & 0xFF, replen >> 8 }; 320 struct iic_msg msgs[] = { 321 {sc->addr, IIC_M_WR | IIC_M_NOSTOP, sizeof(cmd), cmd}, 322 {sc->addr, IIC_M_WR | IIC_M_NOSTART, len, __DECONST(void *, buf)}, 323 }; 324 325 if (le16toh(sc->desc.wMaxOutputLength) == 0) 326 return (IIC_ENOTSUPP); 327 if (len < 2) 328 return (IIC_ENOTSUPP); 329 330 DPRINTF(sc, "HID command I2C_HID_CMD_WRITE (len %d): " 331 "%*D\n", len, len, buf, " "); 332 333 return (iicbus_transfer(sc->dev, msgs, nitems(msgs))); 334 } 335 336 static int 337 iichid_cmd_get_hid_desc(struct iichid_softc *sc, uint16_t config_reg, 338 struct i2c_hid_desc *hid_desc) 339 { 340 /* 341 * 5.2.2 - HID Descriptor Retrieval 342 * register is passed from the controller. 343 */ 344 uint16_t cmd = htole16(config_reg); 345 struct iic_msg msgs[] = { 346 { sc->addr, IIC_M_WR | IIC_M_NOSTOP, 2, (uint8_t *)&cmd }, 347 { sc->addr, IIC_M_RD, sizeof(*hid_desc), (uint8_t *)hid_desc }, 348 }; 349 int error; 350 351 DPRINTF(sc, "HID command I2C_HID_CMD_DESCR at 0x%x\n", config_reg); 352 353 error = iicbus_transfer(sc->dev, msgs, nitems(msgs)); 354 if (error != 0) 355 return (error); 356 357 DPRINTF(sc, "HID descriptor: %*D\n", 358 (int)sizeof(struct i2c_hid_desc), hid_desc, " "); 359 360 return (0); 361 } 362 363 static int 364 iichid_set_power(struct iichid_softc *sc, uint8_t param) 365 { 366 uint8_t *cmdreg = (uint8_t *)&sc->desc.wCommandRegister; 367 uint8_t cmd[] = { cmdreg[0], cmdreg[1], param, I2C_HID_CMD_SET_POWER }; 368 struct iic_msg msgs[] = { 369 { sc->addr, IIC_M_WR, sizeof(cmd), cmd }, 370 }; 371 372 DPRINTF(sc, "HID command I2C_HID_CMD_SET_POWER(%d)\n", param); 373 374 return (iicbus_transfer(sc->dev, msgs, nitems(msgs))); 375 } 376 377 static int 378 iichid_reset(struct iichid_softc *sc) 379 { 380 uint8_t *cmdreg = (uint8_t *)&sc->desc.wCommandRegister; 381 uint8_t cmd[] = { cmdreg[0], cmdreg[1], 0, I2C_HID_CMD_RESET }; 382 struct iic_msg msgs[] = { 383 { sc->addr, IIC_M_WR, sizeof(cmd), cmd }, 384 }; 385 386 DPRINTF(sc, "HID command I2C_HID_CMD_RESET\n"); 387 388 return (iicbus_transfer(sc->dev, msgs, nitems(msgs))); 389 } 390 391 static int 392 iichid_cmd_get_report_desc(struct iichid_softc* sc, void *buf, 393 iichid_size_t len) 394 { 395 uint16_t cmd = sc->desc.wReportDescRegister; 396 struct iic_msg msgs[] = { 397 { sc->addr, IIC_M_WR | IIC_M_NOSTOP, 2, (uint8_t *)&cmd }, 398 { sc->addr, IIC_M_RD, len, buf }, 399 }; 400 int error; 401 402 DPRINTF(sc, "HID command I2C_HID_REPORT_DESCR at 0x%x with size %d\n", 403 le16toh(cmd), len); 404 405 error = iicbus_transfer(sc->dev, msgs, nitems(msgs)); 406 if (error != 0) 407 return (error); 408 409 DPRINTF(sc, "HID report descriptor: %*D\n", len, buf, " "); 410 411 return (0); 412 } 413 414 static int 415 iichid_cmd_get_report(struct iichid_softc* sc, void *buf, iichid_size_t maxlen, 416 iichid_size_t *actual_len, uint8_t type, uint8_t id) 417 { 418 /* 419 * 7.2.2.4 - "The protocol is optimized for Report < 15. If a 420 * report ID >= 15 is necessary, then the Report ID in the Low Byte 421 * must be set to 1111 and a Third Byte is appended to the protocol. 422 * This Third Byte contains the entire/actual report ID." 423 */ 424 uint8_t *dtareg = (uint8_t *)&sc->desc.wDataRegister; 425 uint8_t *cmdreg = (uint8_t *)&sc->desc.wCommandRegister; 426 uint8_t cmd[] = { /*________|______id>=15_____|______id<15______*/ 427 cmdreg[0] , 428 cmdreg[1] , 429 (id >= 15 ? 15 | (type << 4): id | (type << 4)), 430 I2C_HID_CMD_GET_REPORT , 431 (id >= 15 ? id : dtareg[0] ), 432 (id >= 15 ? dtareg[0] : dtareg[1] ), 433 (id >= 15 ? dtareg[1] : 0 ), 434 }; 435 int cmdlen = (id >= 15 ? 7 : 6 ); 436 uint8_t actbuf[2] = { 0, 0 }; 437 uint16_t actlen; 438 int d, error; 439 struct iic_msg msgs[] = { 440 { sc->addr, IIC_M_WR | IIC_M_NOSTOP, cmdlen, cmd }, 441 { sc->addr, IIC_M_RD | IIC_M_NOSTOP, 2, actbuf }, 442 { sc->addr, IIC_M_RD | IIC_M_NOSTART, maxlen, buf }, 443 }; 444 445 if (maxlen == 0) 446 return (EINVAL); 447 448 DPRINTF(sc, "HID command I2C_HID_CMD_GET_REPORT %d " 449 "(type %d, len %d)\n", id, type, maxlen); 450 451 /* 452 * 7.2.2.2 - Response will be a 2-byte length value, the report 453 * id (1 byte, if defined in Report Descriptor), and then the report. 454 */ 455 error = iicbus_transfer(sc->dev, msgs, nitems(msgs)); 456 if (error != 0) 457 return (error); 458 459 actlen = actbuf[0] | actbuf[1] << 8; 460 if (actlen != maxlen + 2) 461 DPRINTF(sc, "response size %d != expected length %d\n", 462 actlen, maxlen + 2); 463 464 if (actlen <= 2 || actlen == 0xFFFF) 465 return (ENOMSG); 466 467 d = id != 0 ? *(uint8_t *)buf : 0; 468 if (d != id) { 469 DPRINTF(sc, "response report id %d != %d\n", d, id); 470 return (EBADMSG); 471 } 472 473 actlen -= 2; 474 if (actlen > maxlen) 475 actlen = maxlen; 476 if (actual_len != NULL) 477 *actual_len = actlen; 478 479 DPRINTF(sc, "response: %*D %*D\n", 2, actbuf, " ", actlen, buf, " "); 480 481 return (0); 482 } 483 484 static int 485 iichid_cmd_set_report(struct iichid_softc* sc, const void *buf, 486 iichid_size_t len, uint8_t type, uint8_t id) 487 { 488 /* 489 * 7.2.2.4 - "The protocol is optimized for Report < 15. If a 490 * report ID >= 15 is necessary, then the Report ID in the Low Byte 491 * must be set to 1111 and a Third Byte is appended to the protocol. 492 * This Third Byte contains the entire/actual report ID." 493 */ 494 uint8_t *dtareg = (uint8_t *)&sc->desc.wDataRegister; 495 uint8_t *cmdreg = (uint8_t *)&sc->desc.wCommandRegister; 496 uint16_t replen = 2 + len; 497 uint8_t cmd[] = { /*________|______id>=15_____|______id<15______*/ 498 cmdreg[0] , 499 cmdreg[1] , 500 (id >= 15 ? 15 | (type << 4): id | (type << 4)), 501 I2C_HID_CMD_SET_REPORT , 502 (id >= 15 ? id : dtareg[0] ), 503 (id >= 15 ? dtareg[0] : dtareg[1] ), 504 (id >= 15 ? dtareg[1] : replen & 0xff ), 505 (id >= 15 ? replen & 0xff : replen >> 8 ), 506 (id >= 15 ? replen >> 8 : 0 ), 507 }; 508 int cmdlen = (id >= 15 ? 9 : 8 ); 509 struct iic_msg msgs[] = { 510 {sc->addr, IIC_M_WR | IIC_M_NOSTOP, cmdlen, cmd}, 511 {sc->addr, IIC_M_WR | IIC_M_NOSTART, len, __DECONST(void *, buf)}, 512 }; 513 514 DPRINTF(sc, "HID command I2C_HID_CMD_SET_REPORT %d (type %d, len %d): " 515 "%*D\n", id, type, len, len, buf, " "); 516 517 return (iicbus_transfer(sc->dev, msgs, nitems(msgs))); 518 } 519 520 #ifdef IICHID_SAMPLING 521 static void 522 iichid_event_task(void *context, int pending) 523 { 524 struct iichid_softc *sc; 525 device_t parent; 526 iichid_size_t actual; 527 bool bus_requested; 528 int error; 529 530 sc = context; 531 parent = device_get_parent(sc->dev); 532 533 bus_requested = false; 534 if (iicbus_request_bus(parent, sc->dev, IIC_WAIT) != 0) 535 goto rearm; 536 bus_requested = true; 537 538 if (!sc->power_on) 539 goto out; 540 541 error = iichid_cmd_read(sc, sc->intr_buf, sc->intr_bufsize, &actual); 542 if (error == 0) { 543 if (actual > 0) { 544 sc->intr_handler(sc->intr_ctx, sc->intr_buf, actual); 545 sc->missing_samples = 0; 546 } else 547 ++sc->missing_samples; 548 } else 549 DPRINTF(sc, "read error occurred: %d\n", error); 550 551 rearm: 552 if (sc->callout_setup && sc->sampling_rate_slow > 0) { 553 if (sc->missing_samples == sc->sampling_hysteresis) 554 sc->intr_handler(sc->intr_ctx, sc->intr_buf, 0); 555 taskqueue_enqueue_timeout(sc->taskqueue, &sc->periodic_task, 556 hz / MAX(sc->missing_samples >= sc->sampling_hysteresis ? 557 sc->sampling_rate_slow : sc->sampling_rate_fast, 1)); 558 } 559 out: 560 if (bus_requested) 561 iicbus_release_bus(parent, sc->dev); 562 } 563 #endif /* IICHID_SAMPLING */ 564 565 static void 566 iichid_intr(void *context) 567 { 568 struct iichid_softc *sc; 569 device_t parent; 570 iichid_size_t maxlen, actual; 571 int error; 572 573 sc = context; 574 parent = device_get_parent(sc->dev); 575 576 /* 577 * Designware(IG4) driver-specific hack. 578 * Requesting of an I2C bus with IIC_DONTWAIT parameter enables polled 579 * mode in the driver, making possible iicbus_transfer execution from 580 * interrupt handlers and callouts. 581 */ 582 if (iicbus_request_bus(parent, sc->dev, IIC_DONTWAIT) != 0) 583 return; 584 585 /* 586 * Reading of input reports of I2C devices residing in SLEEP state is 587 * not allowed and often returns a garbage. If a HOST needs to 588 * communicate with the DEVICE it MUST issue a SET POWER command 589 * (to ON) before any other command. As some hardware requires reads to 590 * acknowledge interrupts we fetch only length header and discard it. 591 */ 592 maxlen = sc->power_on ? sc->intr_bufsize : 0; 593 error = iichid_cmd_read(sc, sc->intr_buf, maxlen, &actual); 594 if (error == 0) { 595 if (sc->power_on) { 596 if (actual != 0) 597 sc->intr_handler(sc->intr_ctx, sc->intr_buf, 598 actual); 599 else 600 DPRINTF(sc, "no data received\n"); 601 } 602 } else 603 DPRINTF(sc, "read error occurred: %d\n", error); 604 605 iicbus_release_bus(parent, sc->dev); 606 } 607 608 static int 609 iichid_set_power_state(struct iichid_softc *sc, 610 enum iichid_powerstate_how how_open, 611 enum iichid_powerstate_how how_suspend) 612 { 613 device_t parent; 614 int error; 615 int how_request; 616 bool power_on; 617 618 /* 619 * Request iicbus early as sc->suspend and sc->power_on 620 * are protected by iicbus internal lock. 621 */ 622 parent = device_get_parent(sc->dev); 623 /* Allow to interrupt open()/close() handlers by SIGINT */ 624 how_request = how_open == IICHID_PS_NULL ? IIC_WAIT : IIC_INTRWAIT; 625 error = iicbus_request_bus(parent, sc->dev, how_request); 626 if (error != 0) 627 return (error); 628 629 switch (how_open) { 630 case IICHID_PS_ON: 631 sc->open = true; 632 break; 633 case IICHID_PS_OFF: 634 sc->open = false; 635 break; 636 case IICHID_PS_NULL: 637 default: 638 break; 639 } 640 641 switch (how_suspend) { 642 case IICHID_PS_ON: 643 sc->suspend = false; 644 break; 645 case IICHID_PS_OFF: 646 sc->suspend = true; 647 break; 648 case IICHID_PS_NULL: 649 default: 650 break; 651 } 652 653 power_on = sc->open & !sc->suspend; 654 655 if (power_on != sc->power_on) { 656 error = iichid_set_power(sc, 657 power_on ? I2C_HID_POWER_ON : I2C_HID_POWER_OFF); 658 659 sc->power_on = power_on; 660 #ifdef IICHID_SAMPLING 661 if (sc->sampling_rate_slow >= 0 && sc->intr_handler != NULL) { 662 if (power_on) { 663 iichid_setup_callout(sc); 664 iichid_reset_callout(sc); 665 } else 666 iichid_teardown_callout(sc); 667 } 668 #endif 669 } 670 671 iicbus_release_bus(parent, sc->dev); 672 673 return (error); 674 } 675 676 static int 677 iichid_setup_interrupt(struct iichid_softc *sc) 678 { 679 sc->irq_cookie = 0; 680 681 int error = bus_setup_intr(sc->dev, sc->irq_res, 682 INTR_TYPE_TTY|INTR_MPSAFE, NULL, iichid_intr, sc, &sc->irq_cookie); 683 if (error != 0) 684 DPRINTF(sc, "Could not setup interrupt handler\n"); 685 else 686 DPRINTF(sc, "successfully setup interrupt\n"); 687 688 return (error); 689 } 690 691 static void 692 iichid_teardown_interrupt(struct iichid_softc *sc) 693 { 694 if (sc->irq_cookie) 695 bus_teardown_intr(sc->dev, sc->irq_res, sc->irq_cookie); 696 697 sc->irq_cookie = 0; 698 } 699 700 #ifdef IICHID_SAMPLING 701 static int 702 iichid_setup_callout(struct iichid_softc *sc) 703 { 704 705 if (sc->sampling_rate_slow < 0) { 706 DPRINTF(sc, "sampling_rate is below 0, can't setup callout\n"); 707 return (EINVAL); 708 } 709 710 sc->callout_setup = true; 711 DPRINTF(sc, "successfully setup callout\n"); 712 return (0); 713 } 714 715 static int 716 iichid_reset_callout(struct iichid_softc *sc) 717 { 718 719 if (sc->sampling_rate_slow <= 0) { 720 DPRINTF(sc, "sampling_rate is below or equal to 0, " 721 "can't reset callout\n"); 722 return (EINVAL); 723 } 724 725 if (!sc->callout_setup) 726 return (EINVAL); 727 728 /* Start with slow sampling. */ 729 sc->missing_samples = sc->sampling_hysteresis; 730 taskqueue_enqueue(sc->taskqueue, &sc->event_task); 731 732 return (0); 733 } 734 735 static void 736 iichid_teardown_callout(struct iichid_softc *sc) 737 { 738 739 sc->callout_setup = false; 740 taskqueue_cancel_timeout(sc->taskqueue, &sc->periodic_task, NULL); 741 DPRINTF(sc, "tore callout down\n"); 742 } 743 744 static int 745 iichid_sysctl_sampling_rate_handler(SYSCTL_HANDLER_ARGS) 746 { 747 struct iichid_softc *sc; 748 device_t parent; 749 int error, oldval, value; 750 751 sc = arg1; 752 753 value = sc->sampling_rate_slow; 754 error = sysctl_handle_int(oidp, &value, 0, req); 755 756 if (error != 0 || req->newptr == NULL || 757 value == sc->sampling_rate_slow) 758 return (error); 759 760 /* Can't switch to interrupt mode if it is not supported. */ 761 if (sc->irq_res == NULL && value < 0) 762 return (EINVAL); 763 764 parent = device_get_parent(sc->dev); 765 error = iicbus_request_bus(parent, sc->dev, IIC_WAIT); 766 if (error != 0) 767 return (iic2errno(error)); 768 769 oldval = sc->sampling_rate_slow; 770 sc->sampling_rate_slow = value; 771 772 if (oldval < 0 && value >= 0) { 773 iichid_teardown_interrupt(sc); 774 if (sc->power_on) 775 iichid_setup_callout(sc); 776 } else if (oldval >= 0 && value < 0) { 777 if (sc->power_on) 778 iichid_teardown_callout(sc); 779 iichid_setup_interrupt(sc); 780 } 781 782 if (sc->power_on && value > 0) 783 iichid_reset_callout(sc); 784 785 iicbus_release_bus(parent, sc->dev); 786 787 DPRINTF(sc, "new sampling_rate value: %d\n", value); 788 789 return (0); 790 } 791 #endif /* IICHID_SAMPLING */ 792 793 static void 794 iichid_intr_setup(device_t dev, hid_intr_t intr, void *context, 795 struct hid_rdesc_info *rdesc) 796 { 797 struct iichid_softc *sc; 798 799 if (intr == NULL) 800 return; 801 802 sc = device_get_softc(dev); 803 /* 804 * Do not rely on wMaxInputLength, as some devices may set it to 805 * a wrong length. Find the longest input report in report descriptor. 806 */ 807 rdesc->rdsize = rdesc->isize; 808 /* Write and get/set_report sizes are limited by I2C-HID protocol. */ 809 rdesc->grsize = rdesc->srsize = IICHID_SIZE_MAX; 810 rdesc->wrsize = IICHID_SIZE_MAX; 811 812 sc->intr_handler = intr; 813 sc->intr_ctx = context; 814 sc->intr_buf = malloc(rdesc->rdsize, M_DEVBUF, M_WAITOK | M_ZERO); 815 sc->intr_bufsize = rdesc->rdsize; 816 #ifdef IICHID_SAMPLING 817 taskqueue_start_threads(&sc->taskqueue, 1, PI_TTY, 818 "%s taskq", device_get_nameunit(sc->dev)); 819 #endif 820 } 821 822 static void 823 iichid_intr_unsetup(device_t dev) 824 { 825 struct iichid_softc *sc; 826 827 sc = device_get_softc(dev); 828 #ifdef IICHID_SAMPLING 829 taskqueue_drain_all(sc->taskqueue); 830 #endif 831 free(sc->intr_buf, M_DEVBUF); 832 } 833 834 static int 835 iichid_intr_start(device_t dev) 836 { 837 struct iichid_softc *sc; 838 839 sc = device_get_softc(dev); 840 DPRINTF(sc, "iichid device open\n"); 841 iichid_set_power_state(sc, IICHID_PS_ON, IICHID_PS_NULL); 842 843 return (0); 844 } 845 846 static int 847 iichid_intr_stop(device_t dev) 848 { 849 struct iichid_softc *sc; 850 851 sc = device_get_softc(dev); 852 DPRINTF(sc, "iichid device close\n"); 853 /* 854 * 8.2 - The HOST determines that there are no active applications 855 * that are currently using the specific HID DEVICE. The HOST 856 * is recommended to issue a HIPO command to the DEVICE to force 857 * the DEVICE in to a lower power state. 858 */ 859 iichid_set_power_state(sc, IICHID_PS_OFF, IICHID_PS_NULL); 860 861 return (0); 862 } 863 864 static void 865 iichid_intr_poll(device_t dev) 866 { 867 struct iichid_softc *sc; 868 iichid_size_t actual; 869 int error; 870 871 sc = device_get_softc(dev); 872 error = iichid_cmd_read(sc, sc->intr_buf, sc->intr_bufsize, &actual); 873 if (error == 0 && actual != 0) 874 sc->intr_handler(sc->intr_ctx, sc->intr_buf, actual); 875 } 876 877 /* 878 * HID interface 879 */ 880 static int 881 iichid_get_rdesc(device_t dev, void *buf, hid_size_t len) 882 { 883 struct iichid_softc *sc; 884 int error; 885 886 sc = device_get_softc(dev); 887 error = iichid_cmd_get_report_desc(sc, buf, len); 888 if (error) 889 DPRINTF(sc, "failed to fetch report descriptor: %d\n", error); 890 891 return (iic2errno(error)); 892 } 893 894 static int 895 iichid_read(device_t dev, void *buf, hid_size_t maxlen, hid_size_t *actlen) 896 { 897 struct iichid_softc *sc; 898 device_t parent; 899 int error; 900 901 if (maxlen > IICHID_SIZE_MAX) 902 return (EMSGSIZE); 903 sc = device_get_softc(dev); 904 parent = device_get_parent(sc->dev); 905 error = iicbus_request_bus(parent, sc->dev, IIC_WAIT); 906 if (error == 0) { 907 error = iichid_cmd_read(sc, buf, maxlen, actlen); 908 iicbus_release_bus(parent, sc->dev); 909 } 910 return (iic2errno(error)); 911 } 912 913 static int 914 iichid_write(device_t dev, const void *buf, hid_size_t len) 915 { 916 struct iichid_softc *sc; 917 918 if (len > IICHID_SIZE_MAX) 919 return (EMSGSIZE); 920 sc = device_get_softc(dev); 921 return (iic2errno(iichid_cmd_write(sc, buf, len))); 922 } 923 924 static int 925 iichid_get_report(device_t dev, void *buf, hid_size_t maxlen, 926 hid_size_t *actlen, uint8_t type, uint8_t id) 927 { 928 struct iichid_softc *sc; 929 930 if (maxlen > IICHID_SIZE_MAX) 931 return (EMSGSIZE); 932 sc = device_get_softc(dev); 933 return (iic2errno( 934 iichid_cmd_get_report(sc, buf, maxlen, actlen, type, id))); 935 } 936 937 static int 938 iichid_set_report(device_t dev, const void *buf, hid_size_t len, uint8_t type, 939 uint8_t id) 940 { 941 struct iichid_softc *sc; 942 943 if (len > IICHID_SIZE_MAX) 944 return (EMSGSIZE); 945 sc = device_get_softc(dev); 946 return (iic2errno(iichid_cmd_set_report(sc, buf, len, type, id))); 947 } 948 949 static int 950 iichid_set_idle(device_t dev, uint16_t duration, uint8_t id) 951 { 952 return (ENOTSUP); 953 } 954 955 static int 956 iichid_set_protocol(device_t dev, uint16_t protocol) 957 { 958 return (ENOTSUP); 959 } 960 961 static int 962 iichid_ioctl(device_t dev, unsigned long cmd, uintptr_t data) 963 { 964 int error; 965 966 switch (cmd) { 967 case I2CRDWR: 968 error = iic2errno(iicbus_transfer(dev, 969 ((struct iic_rdwr_data *)data)->msgs, 970 ((struct iic_rdwr_data *)data)->nmsgs)); 971 break; 972 default: 973 error = EINVAL; 974 } 975 976 return (error); 977 } 978 979 static int 980 iichid_fill_device_info(struct i2c_hid_desc *desc, ACPI_HANDLE handle, 981 struct hid_device_info *hw) 982 { 983 ACPI_DEVICE_INFO *device_info; 984 985 hw->idBus = BUS_I2C; 986 hw->idVendor = le16toh(desc->wVendorID); 987 hw->idProduct = le16toh(desc->wProductID); 988 hw->idVersion = le16toh(desc->wVersionID); 989 990 /* get ACPI HID. It is a base part of the device name. */ 991 if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &device_info))) 992 return (ENXIO); 993 994 if (device_info->Valid & ACPI_VALID_HID) 995 strlcpy(hw->idPnP, device_info->HardwareId.String, 996 HID_PNP_ID_SIZE); 997 snprintf(hw->name, sizeof(hw->name), "%s:%02lX %04X:%04X", 998 (device_info->Valid & ACPI_VALID_HID) ? 999 device_info->HardwareId.String : "Unknown", 1000 (device_info->Valid & ACPI_VALID_UID) ? 1001 strtoul(device_info->UniqueId.String, NULL, 10) : 0UL, 1002 le16toh(desc->wVendorID), le16toh(desc->wProductID)); 1003 1004 AcpiOsFree(device_info); 1005 1006 strlcpy(hw->serial, "", sizeof(hw->serial)); 1007 hw->rdescsize = le16toh(desc->wReportDescLength); 1008 if (desc->wOutputRegister == 0 || desc->wMaxOutputLength == 0) 1009 hid_add_dynamic_quirk(hw, HQ_NOWRITE); 1010 1011 return (0); 1012 } 1013 1014 static int 1015 iichid_probe(device_t dev) 1016 { 1017 struct iichid_softc *sc; 1018 ACPI_HANDLE handle; 1019 char buf[80]; 1020 uint16_t config_reg; 1021 int error, reg; 1022 1023 sc = device_get_softc(dev); 1024 sc->dev = dev; 1025 if (sc->probe_done) 1026 goto done; 1027 1028 sc->probe_done = true; 1029 sc->probe_result = ENXIO; 1030 1031 if (acpi_disabled("iichid")) 1032 return (ENXIO); 1033 1034 sc->addr = iicbus_get_addr(dev) << 1; 1035 if (sc->addr == 0) 1036 return (ENXIO); 1037 1038 handle = acpi_get_handle(dev); 1039 if (handle == NULL) 1040 return (ENXIO); 1041 1042 reg = acpi_is_iichid(handle); 1043 if (reg == IICHID_REG_NONE) 1044 return (ENXIO); 1045 1046 if (reg == IICHID_REG_ACPI) { 1047 if (ACPI_FAILURE(iichid_get_config_reg(handle, &config_reg))) 1048 return (ENXIO); 1049 } else 1050 config_reg = (uint16_t)reg; 1051 1052 DPRINTF(sc, " IICbus addr : 0x%02X\n", sc->addr >> 1); 1053 DPRINTF(sc, " HID descriptor reg: 0x%02X\n", config_reg); 1054 1055 error = iichid_cmd_get_hid_desc(sc, config_reg, &sc->desc); 1056 if (error) { 1057 DPRINTF(sc, "could not retrieve HID descriptor from the " 1058 "device: %d\n", error); 1059 return (ENXIO); 1060 } 1061 1062 if (le16toh(sc->desc.wHIDDescLength) != 30 || 1063 le16toh(sc->desc.bcdVersion) != 0x100) { 1064 DPRINTF(sc, "HID descriptor is broken\n"); 1065 return (ENXIO); 1066 } 1067 1068 /* Setup hid_device_info so we can figure out quirks for the device. */ 1069 if (iichid_fill_device_info(&sc->desc, handle, &sc->hw) != 0) { 1070 DPRINTF(sc, "error evaluating AcpiGetObjectInfo\n"); 1071 return (ENXIO); 1072 } 1073 1074 if (hid_test_quirk(&sc->hw, HQ_HID_IGNORE)) 1075 return (ENXIO); 1076 1077 sc->probe_result = BUS_PROBE_DEFAULT; 1078 done: 1079 if (sc->probe_result <= BUS_PROBE_SPECIFIC) { 1080 snprintf(buf, sizeof(buf), "%s I2C HID device", sc->hw.name); 1081 device_set_desc_copy(dev, buf); 1082 } 1083 return (sc->probe_result); 1084 } 1085 1086 static int 1087 iichid_attach(device_t dev) 1088 { 1089 struct iichid_softc *sc; 1090 device_t child; 1091 int error; 1092 1093 sc = device_get_softc(dev); 1094 error = iichid_set_power(sc, I2C_HID_POWER_ON); 1095 if (error) { 1096 device_printf(dev, "failed to power on: %d\n", error); 1097 return (ENXIO); 1098 } 1099 /* 1100 * Windows driver sleeps for 1ms between the SET_POWER and RESET 1101 * commands. So we too as some devices may depend on this. 1102 */ 1103 pause("iichid", (hz + 999) / 1000); 1104 1105 error = iichid_reset(sc); 1106 if (error) { 1107 device_printf(dev, "failed to reset hardware: %d\n", error); 1108 error = ENXIO; 1109 goto done; 1110 } 1111 1112 sc->power_on = true; 1113 1114 TASK_INIT(&sc->suspend_task, 0, iichid_suspend_task, sc); 1115 #ifdef IICHID_SAMPLING 1116 TASK_INIT(&sc->event_task, 0, iichid_event_task, sc); 1117 /* taskqueue_create can't fail with M_WAITOK mflag passed. */ 1118 sc->taskqueue = taskqueue_create("iichid_tq", M_WAITOK | M_ZERO, 1119 taskqueue_thread_enqueue, &sc->taskqueue); 1120 TIMEOUT_TASK_INIT(sc->taskqueue, &sc->periodic_task, 0, 1121 iichid_event_task, sc); 1122 1123 sc->sampling_rate_slow = -1; 1124 sc->sampling_rate_fast = IICHID_SAMPLING_RATE_FAST; 1125 sc->sampling_hysteresis = IICHID_SAMPLING_HYSTERESIS; 1126 #endif 1127 1128 sc->irq_rid = 0; 1129 sc->irq_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ, 1130 &sc->irq_rid, RF_ACTIVE); 1131 1132 if (sc->irq_res != NULL) { 1133 DPRINTF(sc, "allocated irq at %p and rid %d\n", 1134 sc->irq_res, sc->irq_rid); 1135 error = iichid_setup_interrupt(sc); 1136 } 1137 1138 if (sc->irq_res == NULL || error != 0) { 1139 #ifdef IICHID_SAMPLING 1140 device_printf(sc->dev, 1141 "Interrupt setup failed. Fallback to sampling\n"); 1142 sc->sampling_rate_slow = IICHID_SAMPLING_RATE_SLOW; 1143 #else 1144 device_printf(sc->dev, "Interrupt setup failed\n"); 1145 if (sc->irq_res != NULL) 1146 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 1147 sc->irq_res); 1148 error = ENXIO; 1149 goto done; 1150 #endif 1151 } 1152 1153 #ifdef IICHID_SAMPLING 1154 SYSCTL_ADD_PROC(device_get_sysctl_ctx(sc->dev), 1155 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1156 OID_AUTO, "sampling_rate_slow", CTLTYPE_INT | CTLFLAG_RWTUN, 1157 sc, 0, iichid_sysctl_sampling_rate_handler, "I", 1158 "idle sampling rate in num/second"); 1159 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->dev), 1160 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1161 OID_AUTO, "sampling_rate_fast", CTLFLAG_RWTUN, 1162 &sc->sampling_rate_fast, 0, 1163 "active sampling rate in num/second"); 1164 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->dev), 1165 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1166 OID_AUTO, "sampling_hysteresis", CTLFLAG_RWTUN, 1167 &sc->sampling_hysteresis, 0, 1168 "number of missing samples before enabling of slow mode"); 1169 hid_add_dynamic_quirk(&sc->hw, HQ_IICHID_SAMPLING); 1170 1171 if (sc->sampling_rate_slow >= 0) { 1172 pause("iichid", (hz + 999) / 1000); 1173 (void)iichid_cmd_read(sc, NULL, 0, NULL); 1174 } 1175 #endif /* IICHID_SAMPLING */ 1176 1177 child = device_add_child(dev, "hidbus", -1); 1178 if (child == NULL) { 1179 device_printf(sc->dev, "Could not add I2C device\n"); 1180 iichid_detach(dev); 1181 error = ENOMEM; 1182 goto done; 1183 } 1184 1185 device_set_ivars(child, &sc->hw); 1186 error = bus_generic_attach(dev); 1187 if (error) { 1188 device_printf(dev, "failed to attach child: error %d\n", error); 1189 iichid_detach(dev); 1190 } 1191 done: 1192 (void)iichid_set_power(sc, I2C_HID_POWER_OFF); 1193 sc->power_on = false; 1194 return (error); 1195 } 1196 1197 static int 1198 iichid_detach(device_t dev) 1199 { 1200 struct iichid_softc *sc; 1201 int error; 1202 1203 sc = device_get_softc(dev); 1204 error = device_delete_children(dev); 1205 if (error) 1206 return (error); 1207 iichid_teardown_interrupt(sc); 1208 if (sc->irq_res != NULL) 1209 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 1210 sc->irq_res); 1211 #ifdef IICHID_SAMPLING 1212 if (sc->taskqueue != NULL) 1213 taskqueue_free(sc->taskqueue); 1214 sc->taskqueue = NULL; 1215 #endif 1216 return (0); 1217 } 1218 1219 static void 1220 iichid_suspend_task(void *context, int pending) 1221 { 1222 struct iichid_softc *sc = context; 1223 1224 iichid_teardown_interrupt(sc); 1225 } 1226 1227 static int 1228 iichid_suspend(device_t dev) 1229 { 1230 struct iichid_softc *sc; 1231 int error; 1232 1233 sc = device_get_softc(dev); 1234 (void)bus_generic_suspend(dev); 1235 /* 1236 * 8.2 - The HOST is going into a deep power optimized state and wishes 1237 * to put all the devices into a low power state also. The HOST 1238 * is recommended to issue a HIPO command to the DEVICE to force 1239 * the DEVICE in to a lower power state. 1240 */ 1241 DPRINTF(sc, "Suspend called, setting device to power_state 1\n"); 1242 error = iichid_set_power_state(sc, IICHID_PS_NULL, IICHID_PS_OFF); 1243 if (error != 0) 1244 DPRINTF(sc, "Could not set power_state, error: %d\n", error); 1245 else 1246 DPRINTF(sc, "Successfully set power_state\n"); 1247 1248 #ifdef IICHID_SAMPLING 1249 if (sc->sampling_rate_slow < 0) 1250 #endif 1251 { 1252 /* 1253 * bus_teardown_intr can not be executed right here as it wants 1254 * to run on certain CPU to interacts with LAPIC while suspend 1255 * thread is bound to CPU0. So run it from taskqueue context. 1256 */ 1257 #ifdef IICHID_SAMPLING 1258 #define suspend_thread sc->taskqueue 1259 #else 1260 #define suspend_thread taskqueue_thread 1261 #endif 1262 taskqueue_enqueue(suspend_thread, &sc->suspend_task); 1263 taskqueue_drain(suspend_thread, &sc->suspend_task); 1264 } 1265 1266 return (0); 1267 } 1268 1269 static int 1270 iichid_resume(device_t dev) 1271 { 1272 struct iichid_softc *sc; 1273 int error; 1274 1275 sc = device_get_softc(dev); 1276 #ifdef IICHID_SAMPLING 1277 if (sc->sampling_rate_slow < 0) 1278 #endif 1279 iichid_setup_interrupt(sc); 1280 1281 DPRINTF(sc, "Resume called, setting device to power_state 0\n"); 1282 error = iichid_set_power_state(sc, IICHID_PS_NULL, IICHID_PS_ON); 1283 if (error != 0) 1284 DPRINTF(sc, "Could not set power_state, error: %d\n", error); 1285 else 1286 DPRINTF(sc, "Successfully set power_state\n"); 1287 (void)bus_generic_resume(dev); 1288 1289 return (0); 1290 } 1291 1292 static device_method_t iichid_methods[] = { 1293 DEVMETHOD(device_probe, iichid_probe), 1294 DEVMETHOD(device_attach, iichid_attach), 1295 DEVMETHOD(device_detach, iichid_detach), 1296 DEVMETHOD(device_suspend, iichid_suspend), 1297 DEVMETHOD(device_resume, iichid_resume), 1298 1299 DEVMETHOD(hid_intr_setup, iichid_intr_setup), 1300 DEVMETHOD(hid_intr_unsetup, iichid_intr_unsetup), 1301 DEVMETHOD(hid_intr_start, iichid_intr_start), 1302 DEVMETHOD(hid_intr_stop, iichid_intr_stop), 1303 DEVMETHOD(hid_intr_poll, iichid_intr_poll), 1304 1305 /* HID interface */ 1306 DEVMETHOD(hid_get_rdesc, iichid_get_rdesc), 1307 DEVMETHOD(hid_read, iichid_read), 1308 DEVMETHOD(hid_write, iichid_write), 1309 DEVMETHOD(hid_get_report, iichid_get_report), 1310 DEVMETHOD(hid_set_report, iichid_set_report), 1311 DEVMETHOD(hid_set_idle, iichid_set_idle), 1312 DEVMETHOD(hid_set_protocol, iichid_set_protocol), 1313 DEVMETHOD(hid_ioctl, iichid_ioctl), 1314 1315 DEVMETHOD_END 1316 }; 1317 1318 static driver_t iichid_driver = { 1319 .name = "iichid", 1320 .methods = iichid_methods, 1321 .size = sizeof(struct iichid_softc), 1322 }; 1323 1324 DRIVER_MODULE(iichid, iicbus, iichid_driver, NULL, NULL); 1325 MODULE_DEPEND(iichid, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER); 1326 MODULE_DEPEND(iichid, acpi, 1, 1, 1); 1327 MODULE_DEPEND(iichid, hid, 1, 1, 1); 1328 MODULE_DEPEND(iichid, hidbus, 1, 1, 1); 1329 MODULE_VERSION(iichid, 1); 1330 IICBUS_ACPI_PNP_INFO(iichid_ids);
Cache object: c54a894996a6030a3f6b62a0e450a538
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