qcomgpio.c revision 1.7
1 /* $NetBSD: qcomgpio.c,v 1.7 2024/12/17 22:04:57 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2024 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jared McNeill <jmcneill (at) invisible.ca>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: qcomgpio.c,v 1.7 2024/12/17 22:04:57 riastradh Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/types.h> 37 38 #include <sys/bus.h> 39 #include <sys/cpu.h> 40 #include <sys/device.h> 41 #include <sys/evcnt.h> 42 #include <sys/gpio.h> 43 #include <sys/kmem.h> 44 #include <sys/mutex.h> 45 #include <sys/queue.h> 46 47 #include <dev/acpi/acpi_event.h> 48 #include <dev/acpi/acpi_gpio.h> 49 #include <dev/acpi/acpi_intr.h> 50 #include <dev/acpi/acpireg.h> 51 #include <dev/acpi/acpivar.h> 52 #include <dev/acpi/qcomgpioreg.h> 53 54 #include <dev/gpio/gpiovar.h> 55 56 typedef enum { 57 QCOMGPIO_X1E, 58 } qcomgpio_type; 59 60 struct qcomgpio_reserved { 61 int start; 62 int count; 63 }; 64 65 struct qcomgpio_config { 66 struct qcomgpio_reserved *reserved; 67 u_int num_reserved; 68 u_int *pdc_filter; 69 u_int num_pdc_filter; 70 }; 71 72 struct qcomgpio_intr_handler { 73 int (*ih_func)(void *); 74 void *ih_arg; 75 int ih_pin; 76 int ih_type; 77 struct evcnt ih_evcnt; 78 char ih_name[16]; 79 LIST_ENTRY(qcomgpio_intr_handler) ih_list; 80 }; 81 82 struct qcomgpio_pdcmap { 83 int pm_pin; 84 u_int pm_irq; 85 }; 86 87 struct qcomgpio_softc { 88 device_t sc_dev; 89 device_t sc_gpiodev; 90 bus_space_handle_t sc_bsh; 91 bus_space_tag_t sc_bst; 92 const struct qcomgpio_config *sc_config; 93 struct gpio_chipset_tag sc_gc; 94 gpio_pin_t *sc_pins; 95 u_int sc_npins; 96 LIST_HEAD(, qcomgpio_intr_handler) sc_intrs; 97 kmutex_t sc_lock; 98 99 struct qcomgpio_pdcmap *sc_pdcmap; 100 u_int sc_npdcmap; 101 }; 102 103 #define RD4(sc, reg) \ 104 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 105 #define WR4(sc, reg, val) \ 106 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 107 108 static int qcomgpio_match(device_t, cfdata_t, void *); 109 static void qcomgpio_attach(device_t, device_t, void *); 110 111 static bool qcomgpio_pin_reserved(struct qcomgpio_softc *, int); 112 static int qcomgpio_pin_read(void *, int); 113 static void qcomgpio_pin_write(void *, int, int); 114 static void qcomgpio_pin_ctl(void *, int, int); 115 static void * qcomgpio_intr_establish(void *, int, int, int, 116 int (*)(void *), void *); 117 static void qcomgpio_intr_disestablish(void *, void *); 118 static bool qcomgpio_intr_str(void *, int, int, char *, size_t); 119 static void qcomgpio_intr_mask(void *, void *); 120 static void qcomgpio_intr_unmask(void *, void *); 121 122 static u_int qcomgpio_acpi_num_pins(device_t, ACPI_HANDLE); 123 static void qcomgpio_acpi_fill_pdcmap(struct qcomgpio_softc *, 124 ACPI_HANDLE); 125 static int qcomgpio_acpi_translate(void *, ACPI_RESOURCE_GPIO *, void **); 126 static void qcomgpio_register_event(void *, struct acpi_event *, 127 ACPI_RESOURCE_GPIO *); 128 static int qcomgpio_intr(void *); 129 130 CFATTACH_DECL_NEW(qcomgpio, sizeof(struct qcomgpio_softc), 131 qcomgpio_match, qcomgpio_attach, NULL, NULL); 132 133 static UINT8 qcomgpio_gpio_dsm_uuid[ACPI_UUID_LENGTH] = { 134 0xa4, 0xb2, 0xb9, 0x98, 0x63, 0x16, 0x5f, 0x4a, 135 0x82, 0xf2, 0xc6, 0xc9, 0x9a, 0x39, 0x47, 0x26 136 }; 137 #define QCOMGPIO_GPIO_DSM_REV 0 138 #define QCOMGPIO_GPIO_DSM_FUNC_NUM_PINS 2 139 140 static UINT8 qcomgpio_pdc_dsm_uuid[ACPI_UUID_LENGTH] = { 141 0xd4, 0x0f, 0x1b, 0x92, 0x7c, 0x56, 0xa0, 0x43, 142 0xbb, 0x14, 0x26, 0x48, 0xf7, 0xb2, 0xa1, 0x8c 143 }; 144 #define QCOMGPIO_PDC_DSM_REV 0 145 #define QCOMGPIO_PDC_DSM_FUNC_CIPR 2 146 147 static struct qcomgpio_reserved qcomgpio_x1e_reserved[] = { 148 { .start = 34, .count = 2 }, 149 { .start = 44, .count = 4 }, 150 { .start = 72, .count = 2 }, 151 { .start = 238, .count = 1 }, 152 }; 153 154 static int qcomgpio_x1e_pdc_filter[] = { 155 0x140, /* Interrupt storm due to missing SMI support. */ 156 }; 157 158 static struct qcomgpio_config qcomgpio_x1e_config = { 159 .reserved = qcomgpio_x1e_reserved, 160 .num_reserved = __arraycount(qcomgpio_x1e_reserved), 161 .pdc_filter = qcomgpio_x1e_pdc_filter, 162 .num_pdc_filter = __arraycount(qcomgpio_x1e_pdc_filter), 163 }; 164 165 static const struct device_compatible_entry compat_data[] = { 166 { .compat = "QCOM0C0C", .data = &qcomgpio_x1e_config }, 167 DEVICE_COMPAT_EOL 168 }; 169 170 static int 171 qcomgpio_match(device_t parent, cfdata_t cf, void *aux) 172 { 173 struct acpi_attach_args *aa = aux; 174 175 return acpi_compatible_match(aa, compat_data); 176 } 177 178 static void 179 qcomgpio_attach(device_t parent, device_t self, void *aux) 180 { 181 struct qcomgpio_softc * const sc = device_private(self); 182 struct acpi_attach_args *aa = aux; 183 struct gpiobus_attach_args gba; 184 ACPI_HANDLE hdl = aa->aa_node->ad_handle; 185 struct acpi_resources res; 186 struct acpi_mem *mem; 187 struct acpi_irq *irq; 188 ACPI_STATUS rv; 189 int error, pin, n; 190 void *ih; 191 192 sc->sc_dev = self; 193 sc->sc_config = acpi_compatible_lookup(aa, compat_data)->data; 194 sc->sc_bst = aa->aa_memt; 195 KASSERT(sc->sc_config != NULL); 196 LIST_INIT(&sc->sc_intrs); 197 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_VM); 198 199 rv = acpi_resource_parse(sc->sc_dev, hdl, "_CRS", 200 &res, &acpi_resource_parse_ops_default); 201 if (ACPI_FAILURE(rv)) { 202 return; 203 } 204 205 mem = acpi_res_mem(&res, 0); 206 if (mem == NULL) { 207 aprint_error_dev(self, "couldn't find mem resource\n"); 208 goto done; 209 } 210 211 irq = acpi_res_irq(&res, 0); 212 if (irq == NULL) { 213 aprint_error_dev(self, "couldn't find irq resource\n"); 214 goto done; 215 } 216 217 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 0, 218 &sc->sc_bsh); 219 if (error) { 220 aprint_error_dev(self, "couldn't map registers\n"); 221 goto done; 222 } 223 224 sc->sc_npdcmap = res.ar_nirq; 225 sc->sc_pdcmap = kmem_zalloc(sizeof(*sc->sc_pdcmap) * sc->sc_npdcmap, 226 KM_SLEEP); 227 for (n = 0; n < sc->sc_npdcmap; n++) { 228 sc->sc_pdcmap[n].pm_irq = acpi_res_irq(&res, n)->ar_irq; 229 sc->sc_pdcmap[n].pm_pin = -1; 230 aprint_debug_dev(self, "IRQ resource %u -> %#x\n", 231 n, sc->sc_pdcmap[n].pm_irq); 232 } 233 qcomgpio_acpi_fill_pdcmap(sc, hdl); 234 235 sc->sc_npins = qcomgpio_acpi_num_pins(self, hdl); 236 if (sc->sc_npins == 0) { 237 aprint_error_dev(self, "couldn't determine pin count!\n"); 238 goto done; 239 } 240 sc->sc_pins = kmem_zalloc(sizeof(*sc->sc_pins) * sc->sc_npins, 241 KM_SLEEP); 242 for (pin = 0; pin < sc->sc_npins; pin++) { 243 sc->sc_pins[pin].pin_caps = qcomgpio_pin_reserved(sc, pin) ? 244 0 : (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT); 245 sc->sc_pins[pin].pin_num = pin; 246 sc->sc_pins[pin].pin_intrcaps = 247 GPIO_INTR_POS_EDGE | GPIO_INTR_NEG_EDGE | 248 GPIO_INTR_DOUBLE_EDGE | GPIO_INTR_HIGH_LEVEL | 249 GPIO_INTR_LOW_LEVEL | GPIO_INTR_MPSAFE; 250 } 251 252 sc->sc_gc.gp_cookie = sc; 253 sc->sc_gc.gp_pin_read = qcomgpio_pin_read; 254 sc->sc_gc.gp_pin_write = qcomgpio_pin_write; 255 sc->sc_gc.gp_pin_ctl = qcomgpio_pin_ctl; 256 sc->sc_gc.gp_intr_establish = qcomgpio_intr_establish; 257 sc->sc_gc.gp_intr_disestablish = qcomgpio_intr_disestablish; 258 sc->sc_gc.gp_intr_str = qcomgpio_intr_str; 259 sc->sc_gc.gp_intr_mask = qcomgpio_intr_mask; 260 sc->sc_gc.gp_intr_unmask = qcomgpio_intr_unmask; 261 262 rv = acpi_event_create_gpio(self, hdl, qcomgpio_register_event, sc); 263 if (ACPI_FAILURE(rv)) { 264 if (rv != AE_NOT_FOUND) { 265 aprint_error_dev(self, "failed to create events: %s\n", 266 AcpiFormatException(rv)); 267 } 268 goto done; 269 } 270 271 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)hdl, 272 IPL_VM, false, qcomgpio_intr, sc, device_xname(self)); 273 if (ih == NULL) { 274 aprint_error_dev(self, "couldn't establish interrupt\n"); 275 goto done; 276 } 277 278 memset(&gba, 0, sizeof(gba)); 279 gba.gba_gc = &sc->sc_gc; 280 gba.gba_pins = sc->sc_pins; 281 gba.gba_npins = sc->sc_npins; 282 sc->sc_gpiodev = config_found(self, &gba, gpiobus_print, 283 CFARGS(.iattr = "gpiobus")); 284 if (sc->sc_gpiodev != NULL) { 285 acpi_gpio_register(aa->aa_node, self, 286 qcomgpio_acpi_translate, sc); 287 } 288 289 done: 290 acpi_resource_cleanup(&res); 291 } 292 293 static u_int 294 qcomgpio_acpi_num_pins(device_t dev, ACPI_HANDLE hdl) 295 { 296 ACPI_STATUS rv; 297 ACPI_INTEGER npins; 298 299 rv = acpi_dsm_integer(hdl, qcomgpio_gpio_dsm_uuid, 300 QCOMGPIO_GPIO_DSM_REV, QCOMGPIO_GPIO_DSM_FUNC_NUM_PINS, 301 NULL, &npins); 302 if (ACPI_FAILURE(rv)) { 303 aprint_error_dev(dev, "GPIO _DSM failed: %s\n", 304 AcpiFormatException(rv)); 305 return 0; 306 } 307 308 aprint_debug_dev(dev, "GPIO pin count: %u\n", (u_int)npins); 309 310 return (u_int)npins; 311 } 312 313 static void 314 qcomgpio_acpi_fill_pdcmap(struct qcomgpio_softc *sc, 315 ACPI_HANDLE hdl) 316 { 317 ACPI_STATUS rv; 318 ACPI_OBJECT *obj; 319 u_int n, filt; 320 321 rv = acpi_dsm_typed(hdl, qcomgpio_pdc_dsm_uuid, 322 QCOMGPIO_PDC_DSM_REV, QCOMGPIO_PDC_DSM_FUNC_CIPR, 323 NULL, ACPI_TYPE_PACKAGE, &obj); 324 if (ACPI_FAILURE(rv)) { 325 aprint_error_dev(sc->sc_dev, "PDC _DSM failed: %s\n", 326 AcpiFormatException(rv)); 327 return; 328 } 329 330 for (n = 0; n < obj->Package.Count; n++) { 331 ACPI_OBJECT *map = &obj->Package.Elements[n]; 332 bool filter = false; 333 u_int irq, pdc; 334 int pin; 335 336 if (map->Type != ACPI_TYPE_PACKAGE || 337 map->Package.Count < 3 || 338 map->Package.Elements[0].Type != ACPI_TYPE_INTEGER || 339 map->Package.Elements[1].Type != ACPI_TYPE_INTEGER || 340 map->Package.Elements[2].Type != ACPI_TYPE_INTEGER) { 341 continue; 342 } 343 344 irq = (u_int)map->Package.Elements[2].Integer.Value; 345 pin = (int)map->Package.Elements[1].Integer.Value; 346 for (pdc = 0; pdc < sc->sc_npdcmap; pdc++) { 347 if (sc->sc_pdcmap[pdc].pm_irq == irq) { 348 for (filt = 0; 349 filt < sc->sc_config->num_pdc_filter; 350 filt++) { 351 if (sc->sc_config->pdc_filter[filt] == 352 pdc * 64) { 353 filter = true; 354 break; 355 } 356 } 357 358 if (!filter) { 359 sc->sc_pdcmap[pdc].pm_pin = pin; 360 } 361 break; 362 } 363 } 364 365 aprint_debug_dev(sc->sc_dev, 366 "PDC irq %#x -> pin %d%s%s\n", irq, pin, 367 filter ? " (filtered)" : "", 368 pdc == sc->sc_npdcmap ? " (unused)" : ""); 369 } 370 371 ACPI_FREE(obj); 372 } 373 374 static int 375 qcomgpio_acpi_translate(void *priv, ACPI_RESOURCE_GPIO *gpio, void **gpiop) 376 { 377 struct qcomgpio_softc * const sc = priv; 378 const ACPI_INTEGER vpin = gpio->PinTable[0]; 379 int pin = -1; 380 381 if (vpin < sc->sc_npins) { 382 /* Virtual pin number is 1:1 mapping with hardware. */ 383 pin = vpin; 384 } else if (vpin / 64 < sc->sc_npdcmap) { 385 /* Translate the virtual pin number to a hardware pin. */ 386 pin = sc->sc_pdcmap[vpin / 64].pm_pin; 387 } 388 389 aprint_debug_dev(sc->sc_dev, "translate %#lx -> %u\n", vpin, pin); 390 391 if (gpiop != NULL) { 392 if (sc->sc_gpiodev != NULL) { 393 *gpiop = device_private(sc->sc_gpiodev); 394 } else { 395 device_printf(sc->sc_dev, 396 "no gpiodev for pin %#lx -> %u\n", vpin, pin); 397 pin = -1; 398 } 399 } 400 401 return pin; 402 } 403 404 static int 405 qcomgpio_acpi_event(void *priv) 406 { 407 struct acpi_event * const ev = priv; 408 409 acpi_event_notify(ev); 410 411 return 1; 412 } 413 414 static void 415 qcomgpio_register_event(void *priv, struct acpi_event *ev, 416 ACPI_RESOURCE_GPIO *gpio) 417 { 418 struct qcomgpio_softc * const sc = priv; 419 int irqmode; 420 void *ih; 421 422 const int pin = qcomgpio_acpi_translate(sc, gpio, NULL); 423 424 if (pin < 0) { 425 aprint_error_dev(sc->sc_dev, 426 "ignoring event for pin %#x (out of range)\n", 427 gpio->PinTable[0]); 428 return; 429 } 430 431 if (gpio->Triggering == ACPI_LEVEL_SENSITIVE) { 432 irqmode = gpio->Polarity == ACPI_ACTIVE_HIGH ? 433 GPIO_INTR_HIGH_LEVEL : GPIO_INTR_LOW_LEVEL; 434 } else { 435 KASSERT(gpio->Triggering == ACPI_EDGE_SENSITIVE); 436 if (gpio->Polarity == ACPI_ACTIVE_LOW) { 437 irqmode = GPIO_INTR_NEG_EDGE; 438 } else if (gpio->Polarity == ACPI_ACTIVE_HIGH) { 439 irqmode = GPIO_INTR_POS_EDGE; 440 } else { 441 KASSERT(gpio->Polarity == ACPI_ACTIVE_BOTH); 442 irqmode = GPIO_INTR_DOUBLE_EDGE; 443 } 444 } 445 446 ih = qcomgpio_intr_establish(sc, pin, IPL_VM, irqmode, 447 qcomgpio_acpi_event, ev); 448 if (ih == NULL) { 449 aprint_error_dev(sc->sc_dev, 450 "couldn't register event for pin %#x\n", 451 gpio->PinTable[0]); 452 return; 453 } 454 if (gpio->Triggering == ACPI_LEVEL_SENSITIVE) { 455 acpi_event_set_intrcookie(ev, ih); 456 } 457 } 458 459 static bool 460 qcomgpio_pin_reserved(struct qcomgpio_softc *sc, int pin) 461 { 462 u_int n; 463 464 for (n = 0; n < sc->sc_config->num_reserved; n++) { 465 if (pin >= sc->sc_config->reserved[n].start && 466 pin < sc->sc_config->reserved[n].start + 467 sc->sc_config->reserved[n].count) { 468 return true; 469 } 470 } 471 472 return false; 473 } 474 475 static int 476 qcomgpio_pin_read(void *priv, int pin) 477 { 478 struct qcomgpio_softc * const sc = priv; 479 uint32_t val; 480 481 if (pin < 0 || pin >= sc->sc_npins) { 482 return 0; 483 } 484 if ((sc->sc_pins[pin].pin_caps & GPIO_PIN_INPUT) == 0) { 485 return 0; 486 } 487 488 val = RD4(sc, TLMM_GPIO_IN_OUT(pin)); 489 return (val & TLMM_GPIO_IN_OUT_GPIO_IN) != 0; 490 } 491 492 static void 493 qcomgpio_pin_write(void *priv, int pin, int pinval) 494 { 495 struct qcomgpio_softc * const sc = priv; 496 uint32_t val; 497 498 if (pin < 0 || pin >= sc->sc_npins) { 499 return; 500 } 501 if ((sc->sc_pins[pin].pin_caps & GPIO_PIN_OUTPUT) == 0) { 502 return; 503 } 504 505 val = RD4(sc, TLMM_GPIO_IN_OUT(pin)); 506 if (pinval) { 507 val |= TLMM_GPIO_IN_OUT_GPIO_OUT; 508 } else { 509 val &= ~TLMM_GPIO_IN_OUT_GPIO_OUT; 510 } 511 WR4(sc, TLMM_GPIO_IN_OUT(pin), val); 512 } 513 514 static void 515 qcomgpio_pin_ctl(void *priv, int pin, int flags) 516 { 517 /* Nothing to do here, as firmware has already configured pins. */ 518 } 519 520 static void * 521 qcomgpio_intr_establish(void *priv, int pin, int ipl, int irqmode, 522 int (*func)(void *), void *arg) 523 { 524 struct qcomgpio_softc * const sc = priv; 525 struct qcomgpio_intr_handler *qih, *qihp; 526 uint32_t dect, pol; 527 uint32_t val; 528 529 if (pin < 0 || pin >= sc->sc_npins) { 530 return NULL; 531 } 532 if (ipl != IPL_VM) { 533 device_printf(sc->sc_dev, "%s: only IPL_VM supported\n", 534 __func__); 535 return NULL; 536 } 537 538 qih = kmem_alloc(sizeof(*qih), KM_SLEEP); 539 qih->ih_func = func; 540 qih->ih_arg = arg; 541 qih->ih_pin = pin; 542 qih->ih_type = (irqmode & GPIO_INTR_LEVEL_MASK) != 0 ? 543 IST_LEVEL : IST_EDGE; 544 snprintf(qih->ih_name, sizeof(qih->ih_name), "pin %d", pin); 545 546 mutex_enter(&sc->sc_lock); 547 548 LIST_FOREACH(qihp, &sc->sc_intrs, ih_list) { 549 if (qihp->ih_pin == qih->ih_pin) { 550 mutex_exit(&sc->sc_lock); 551 kmem_free(qih, sizeof(*qih)); 552 device_printf(sc->sc_dev, 553 "%s: pin %d already establish\n", __func__, pin); 554 return NULL; 555 } 556 } 557 558 LIST_INSERT_HEAD(&sc->sc_intrs, qih, ih_list); 559 560 if ((irqmode & GPIO_INTR_LEVEL_MASK) != 0) { 561 dect = TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_LEVEL; 562 pol = (irqmode & GPIO_INTR_HIGH_LEVEL) != 0 ? 563 TLMM_GPIO_INTR_CFG_INTR_POL_CTL : 0; 564 } else { 565 KASSERT((irqmode & GPIO_INTR_EDGE_MASK) != 0); 566 if ((irqmode & GPIO_INTR_NEG_EDGE) != 0) { 567 dect = TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_EDGE_NEG; 568 pol = TLMM_GPIO_INTR_CFG_INTR_POL_CTL; 569 } else if ((irqmode & GPIO_INTR_POS_EDGE) != 0) { 570 dect = TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_EDGE_POS; 571 pol = TLMM_GPIO_INTR_CFG_INTR_POL_CTL; 572 } else { 573 KASSERT((irqmode & GPIO_INTR_DOUBLE_EDGE) != 0); 574 dect = TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_EDGE_BOTH; 575 pol = 0; 576 } 577 } 578 579 val = RD4(sc, TLMM_GPIO_INTR_CFG(pin)); 580 val &= ~TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_MASK; 581 val |= __SHIFTIN(dect, TLMM_GPIO_INTR_CFG_INTR_DECT_CTL_MASK); 582 val &= ~TLMM_GPIO_INTR_CFG_INTR_POL_CTL; 583 val |= pol; 584 val &= ~TLMM_GPIO_INTR_CFG_TARGET_PROC_MASK; 585 val |= __SHIFTIN(TLMM_GPIO_INTR_CFG_TARGET_PROC_RPM, 586 TLMM_GPIO_INTR_CFG_TARGET_PROC_MASK); 587 val |= TLMM_GPIO_INTR_CFG_INTR_RAW_STATUS_EN; 588 val |= TLMM_GPIO_INTR_CFG_INTR_ENABLE; 589 WR4(sc, TLMM_GPIO_INTR_CFG(pin), val); 590 591 mutex_exit(&sc->sc_lock); 592 593 evcnt_attach_dynamic(&qih->ih_evcnt, EVCNT_TYPE_INTR, 594 NULL, device_xname(sc->sc_dev), qih->ih_name); 595 596 return qih; 597 } 598 599 static void 600 qcomgpio_intr_disestablish(void *priv, void *ih) 601 { 602 struct qcomgpio_softc * const sc = priv; 603 struct qcomgpio_intr_handler *qih = ih; 604 uint32_t val; 605 606 evcnt_detach(&qih->ih_evcnt); 607 608 mutex_enter(&sc->sc_lock); 609 610 LIST_REMOVE(qih, ih_list); 611 612 val = RD4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin)); 613 val &= ~TLMM_GPIO_INTR_CFG_INTR_ENABLE; 614 WR4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin), val); 615 616 mutex_exit(&sc->sc_lock); 617 618 kmem_free(qih, sizeof(*qih)); 619 } 620 621 static bool 622 qcomgpio_intr_str(void *priv, int pin, int irqmode, char *buf, size_t buflen) 623 { 624 struct qcomgpio_softc * const sc = priv; 625 int rv; 626 627 rv = snprintf(buf, buflen, "%s pin %d", device_xname(sc->sc_dev), pin); 628 629 return rv < buflen; 630 } 631 632 static void 633 qcomgpio_intr_mask(void *priv, void *ih) 634 { 635 struct qcomgpio_softc * const sc = priv; 636 struct qcomgpio_intr_handler *qih = ih; 637 uint32_t val; 638 639 val = RD4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin)); 640 if (qih->ih_type == IST_LEVEL) { 641 val &= ~TLMM_GPIO_INTR_CFG_INTR_RAW_STATUS_EN; 642 } 643 val &= ~TLMM_GPIO_INTR_CFG_INTR_ENABLE; 644 WR4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin), val); 645 } 646 647 static void 648 qcomgpio_intr_unmask(void *priv, void *ih) 649 { 650 struct qcomgpio_softc * const sc = priv; 651 struct qcomgpio_intr_handler *qih = ih; 652 uint32_t val; 653 654 val = RD4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin)); 655 if (qih->ih_type == IST_LEVEL) { 656 val |= TLMM_GPIO_INTR_CFG_INTR_RAW_STATUS_EN; 657 } 658 val |= TLMM_GPIO_INTR_CFG_INTR_ENABLE; 659 WR4(sc, TLMM_GPIO_INTR_CFG(qih->ih_pin), val); 660 } 661 662 static int 663 qcomgpio_intr(void *priv) 664 { 665 struct qcomgpio_softc * const sc = priv; 666 struct qcomgpio_intr_handler *qih; 667 int rv = 0; 668 669 mutex_enter(&sc->sc_lock); 670 671 LIST_FOREACH(qih, &sc->sc_intrs, ih_list) { 672 const int pin = qih->ih_pin; 673 uint32_t val; 674 675 val = RD4(sc, TLMM_GPIO_INTR_STATUS(pin)); 676 if ((val & TLMM_GPIO_INTR_STATUS_INTR_STATUS) != 0) { 677 qih->ih_evcnt.ev_count++; 678 679 rv |= qih->ih_func(qih->ih_arg); 680 681 val &= ~TLMM_GPIO_INTR_STATUS_INTR_STATUS; 682 WR4(sc, TLMM_GPIO_INTR_STATUS(pin), val); 683 } 684 } 685 686 mutex_exit(&sc->sc_lock); 687 688 return rv; 689 } 690
Indexes created Mon Sep 22 21:09:42 GMT 2025