fujbp_acpi.c revision 1.3
1 /* $NetBSD: fujbp_acpi.c,v 1.3 2012/06/02 21:36:43 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gregoire Sutre. 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 /* 33 * ACPI Fujitsu Driver. 34 * 35 * Together with fujhk(4), this driver provides support for the ACPI devices 36 * FUJ02B1 and FUJ02E3 that are commonly found in Fujitsu LifeBooks. The 37 * driver does not support all features of these devices, in particular 38 * volume control is not implemented. 39 * 40 * Information regarding the behavior of these devices was obtained from the 41 * source code of the Linux and FreeBSD drivers, as well as from experiments on 42 * a Fujitsu LifeBook P7120. 43 * 44 * The FUJ02B1 device is used to control the brightness level of the internal 45 * display, the state (on/off) of the internal pointer, and the volume level of 46 * the internal speakers or headphones. 47 * 48 * The FUJ02B1 device provides the following methods (or only a subset): 49 * 50 * GSIF supported hotkey status bits (bitmask for GHKS) 51 * GHKS active hotkeys (bit field) 52 * {G,S}BLL get/set the brightness level of the internal display 53 * {G,S}VOL get/set the volume level of the internal speakers 54 * {G,S}MOU get/set the switch state of the internal pointer 55 * RBLL brightness radix (number of brightness levels) 56 * RVOL volume radix (number of volume levels) 57 * 58 * Notifications are delivered to the FUJ02B1 device when functions hotkeys 59 * (brightness, pointer) are released. However, these notifications seem to be 60 * purely informative: the BIOS already made the hardware changes corresponding 61 * to the hotkey. 62 * 63 * Each bit in the value returned by GHKS remains set until the corresponding 64 * get method (GBLL, GMOU or GVOL) is called. 65 * 66 * The FUJ02E3 device manages the laptop hotkeys (such as the `Eco' button) and 67 * provides additional services (such as backlight on/off control) through the 68 * FUNC method. 69 * 70 * The FUJ02E3 device provides the following methods (or only a subset): 71 * 72 * GIRB get next hotkey code from buffer 73 * FUNC general-purpose method (four arguments) 74 * 75 * Notifications are delivered to the FUJ02E3 device when hotkeys are pressed 76 * and when they are released. The BIOS stores the corresponding codes in a 77 * FIFO buffer, that can be read with the GIRB method. 78 */ 79 80 #include <sys/cdefs.h> 81 __KERNEL_RCSID(0, "$NetBSD: fujbp_acpi.c,v 1.3 2012/06/02 21:36:43 dsl Exp $"); 82 83 #include <sys/param.h> 84 #include <sys/device.h> 85 #include <sys/module.h> 86 #include <sys/mutex.h> 87 #include <sys/sysctl.h> 88 89 #include <dev/acpi/acpireg.h> 90 #include <dev/acpi/acpivar.h> 91 92 #define _COMPONENT ACPI_RESOURCE_COMPONENT 93 ACPI_MODULE_NAME ("fujbp_acpi") 94 95 /* 96 * Notification value, bits returned by the GHKS method, and 97 * modification status bits (from GBLL, GMOU, GIRB), respectively. 98 */ 99 #define FUJITSU_BP_NOTIFY 0x80 100 #define FUJITSU_BP_HKS_BRIGHTNESS __BIT(0) 101 #define FUJITSU_BP_HKS_POINTER __BIT(3) 102 #define FUJITSU_BP_MODMASK 0xc0000000 103 104 /* 105 * ACPI Fujitsu brightness & pointer controller capabilities (methods). 106 */ 107 #define FUJITSU_BP_CAP_GHKS __BIT(0) 108 #define FUJITSU_BP_CAP_RBLL __BIT(1) 109 #define FUJITSU_BP_CAP_GBLL __BIT(2) 110 #define FUJITSU_BP_CAP_SBLL __BIT(3) 111 #define FUJITSU_BP_CAP_GMOU __BIT(4) 112 #define FUJITSU_BP_CAP_SMOU __BIT(5) 113 114 /* 115 * fujitsu_bp_softc: 116 * 117 * Software state of an ACPI Fujitsu brightness & pointer controller. 118 * Valid brightness levels range from 0 to (sc_brightness_nlevels - 1). 119 */ 120 struct fujitsu_bp_softc { 121 device_t sc_dev; 122 struct acpi_devnode *sc_node; 123 struct sysctllog *sc_log; 124 kmutex_t sc_mtx; 125 uint16_t sc_caps; 126 uint8_t sc_brightness_nlevels; 127 }; 128 129 static const char * const fujitsu_bp_hid[] = { 130 "FUJ02B1", 131 NULL 132 }; 133 134 static int fujitsu_bp_match(device_t, cfdata_t, void *); 135 static void fujitsu_bp_attach(device_t, device_t, void *); 136 static int fujitsu_bp_detach(device_t, int); 137 static bool fujitsu_bp_suspend(device_t, const pmf_qual_t *); 138 static bool fujitsu_bp_resume(device_t, const pmf_qual_t *); 139 static void fujitsu_bp_brightness_up(device_t); 140 static void fujitsu_bp_brightness_down(device_t); 141 static uint16_t fujitsu_bp_capabilities(const struct acpi_devnode *); 142 static void fujitsu_bp_notify_handler(ACPI_HANDLE, uint32_t, void *); 143 static void fujitsu_bp_event_callback(void *); 144 static void fujitsu_bp_sysctl_setup(struct fujitsu_bp_softc *); 145 static int fujitsu_bp_sysctl_brightness(SYSCTLFN_PROTO); 146 static int fujitsu_bp_sysctl_pointer(SYSCTLFN_PROTO); 147 static int fujitsu_bp_get_hks(struct fujitsu_bp_softc *, uint32_t *); 148 static int fujitsu_bp_init_brightness(struct fujitsu_bp_softc *,uint8_t*); 149 static int fujitsu_bp_get_brightness(struct fujitsu_bp_softc *,uint8_t *); 150 static int fujitsu_bp_set_brightness(struct fujitsu_bp_softc *, uint8_t); 151 static int fujitsu_bp_get_pointer(struct fujitsu_bp_softc *, bool *); 152 static int fujitsu_bp_set_pointer(struct fujitsu_bp_softc *, bool); 153 static bool fujitsu_bp_cap(ACPI_HANDLE, const char *, ACPI_OBJECT_TYPE); 154 155 CFATTACH_DECL_NEW(fujbp, sizeof(struct fujitsu_bp_softc), 156 fujitsu_bp_match, fujitsu_bp_attach, fujitsu_bp_detach, NULL); 157 158 static int 159 fujitsu_bp_match(device_t parent, cfdata_t match, void *aux) 160 { 161 struct acpi_attach_args *aa = aux; 162 163 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 164 return 0; 165 166 return acpi_match_hid(aa->aa_node->ad_devinfo, fujitsu_bp_hid); 167 } 168 169 static void 170 fujitsu_bp_attach(device_t parent, device_t self, void *aux) 171 { 172 struct fujitsu_bp_softc *sc = device_private(self); 173 struct acpi_attach_args *aa = aux; 174 struct acpi_devnode *ad = aa->aa_node; 175 176 aprint_naive(": Fujitsu Brightness & Pointer\n"); 177 aprint_normal(": Fujitsu Brightness & Pointer\n"); 178 179 sc->sc_dev = self; 180 sc->sc_node = ad; 181 sc->sc_log = NULL; 182 sc->sc_caps = fujitsu_bp_capabilities(ad); 183 184 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 185 186 if (fujitsu_bp_init_brightness(sc, &sc->sc_brightness_nlevels)) 187 sc->sc_brightness_nlevels = 0; 188 189 (void)acpi_register_notify(sc->sc_node, fujitsu_bp_notify_handler); 190 (void)pmf_device_register(self, fujitsu_bp_suspend, fujitsu_bp_resume); 191 192 fujitsu_bp_sysctl_setup(sc); 193 194 (void)pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_UP, 195 fujitsu_bp_brightness_up, true); 196 197 (void)pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_DOWN, 198 fujitsu_bp_brightness_down, true); 199 } 200 201 static int 202 fujitsu_bp_detach(device_t self, int flags) 203 { 204 struct fujitsu_bp_softc *sc = device_private(self); 205 206 pmf_event_deregister(self, PMFE_DISPLAY_BRIGHTNESS_DOWN, 207 fujitsu_bp_brightness_down, true); 208 209 pmf_event_deregister(self, PMFE_DISPLAY_BRIGHTNESS_UP, 210 fujitsu_bp_brightness_up, true); 211 212 pmf_device_deregister(self); 213 214 if (sc->sc_log != NULL) 215 sysctl_teardown(&sc->sc_log); 216 217 acpi_deregister_notify(sc->sc_node); 218 mutex_destroy(&sc->sc_mtx); 219 220 return 0; 221 } 222 223 /* 224 * On some LifeBook models, a call to the SMOU method is required to make the 225 * internal pointer work after resume. On the P7120, the internal pointer is 226 * always enabled after resume. If it was disabled before suspend, the BIOS 227 * apparently believes that it is still disabled after resume. 228 * 229 * To prevent these problems, we disable the internal pointer on suspend and 230 * enable it on resume. 231 */ 232 static bool 233 fujitsu_bp_suspend(device_t self, const pmf_qual_t *qual) 234 { 235 struct fujitsu_bp_softc *sc = device_private(self); 236 237 mutex_enter(&sc->sc_mtx); 238 (void)fujitsu_bp_set_pointer(sc, false); 239 mutex_exit(&sc->sc_mtx); 240 241 return true; 242 } 243 244 static bool 245 fujitsu_bp_resume(device_t self, const pmf_qual_t *qual) 246 { 247 struct fujitsu_bp_softc *sc = device_private(self); 248 249 mutex_enter(&sc->sc_mtx); 250 (void)fujitsu_bp_set_pointer(sc, true); 251 mutex_exit(&sc->sc_mtx); 252 253 return true; 254 } 255 256 static void 257 fujitsu_bp_brightness_up(device_t self) 258 { 259 struct fujitsu_bp_softc *sc = device_private(self); 260 uint8_t level; 261 262 mutex_enter(&sc->sc_mtx); 263 264 if (fujitsu_bp_get_brightness(sc, &level) == 0 && 265 level < (uint8_t)(sc->sc_brightness_nlevels - 1)) 266 (void)fujitsu_bp_set_brightness(sc, level + 1); 267 268 mutex_exit(&sc->sc_mtx); 269 } 270 271 static void 272 fujitsu_bp_brightness_down(device_t self) 273 { 274 struct fujitsu_bp_softc *sc = device_private(self); 275 uint8_t level; 276 277 mutex_enter(&sc->sc_mtx); 278 279 if (fujitsu_bp_get_brightness(sc, &level) == 0 && level > 0) 280 (void)fujitsu_bp_set_brightness(sc, level - 1); 281 282 mutex_exit(&sc->sc_mtx); 283 } 284 285 static uint16_t 286 fujitsu_bp_capabilities(const struct acpi_devnode *ad) 287 { 288 uint16_t caps; 289 290 caps = 0; 291 292 if (fujitsu_bp_cap(ad->ad_handle, "GHKS", ACPI_TYPE_INTEGER)) 293 caps |= FUJITSU_BP_CAP_GHKS; 294 295 if (fujitsu_bp_cap(ad->ad_handle, "RBLL", ACPI_TYPE_INTEGER)) 296 caps |= FUJITSU_BP_CAP_RBLL; 297 298 if (fujitsu_bp_cap(ad->ad_handle, "GBLL", ACPI_TYPE_INTEGER)) 299 caps |= FUJITSU_BP_CAP_GBLL; 300 301 if (fujitsu_bp_cap(ad->ad_handle, "SBLL", ACPI_TYPE_METHOD)) 302 caps |= FUJITSU_BP_CAP_SBLL; 303 304 if (fujitsu_bp_cap(ad->ad_handle, "GMOU", ACPI_TYPE_INTEGER)) 305 caps |= FUJITSU_BP_CAP_GMOU; 306 307 if (fujitsu_bp_cap(ad->ad_handle, "SMOU", ACPI_TYPE_METHOD)) 308 caps |= FUJITSU_BP_CAP_SMOU; 309 310 return caps; 311 } 312 313 static void 314 fujitsu_bp_notify_handler(ACPI_HANDLE handle, uint32_t evt, void *context) 315 { 316 struct fujitsu_bp_softc *sc = device_private(context); 317 static const int handler = OSL_NOTIFY_HANDLER; 318 319 switch (evt) { 320 321 case FUJITSU_BP_NOTIFY: 322 (void)AcpiOsExecute(handler, fujitsu_bp_event_callback, sc); 323 break; 324 325 default: 326 aprint_debug_dev(sc->sc_dev, "unknown notify 0x%02X\n", evt); 327 } 328 } 329 330 static void 331 fujitsu_bp_event_callback(void *arg) 332 { 333 struct fujitsu_bp_softc *sc = arg; 334 int error; 335 uint32_t hks; 336 uint8_t level; 337 bool state; 338 339 if (fujitsu_bp_get_hks(sc, &hks)) 340 return; 341 342 if (hks & FUJITSU_BP_HKS_BRIGHTNESS) { 343 mutex_enter(&sc->sc_mtx); 344 error = fujitsu_bp_get_brightness(sc, &level); 345 mutex_exit(&sc->sc_mtx); 346 if (!error) 347 aprint_verbose_dev(sc->sc_dev, 348 "brightness level is now: %"PRIu8"\n", level); 349 } 350 351 if (hks & FUJITSU_BP_HKS_POINTER) { 352 mutex_enter(&sc->sc_mtx); 353 error = fujitsu_bp_get_pointer(sc, &state); 354 mutex_exit(&sc->sc_mtx); 355 if (!error) 356 aprint_verbose_dev(sc->sc_dev, 357 "internal pointer is now: %s\n", 358 state ? "enabled" : "disabled"); 359 } 360 } 361 362 static void 363 fujitsu_bp_sysctl_setup(struct fujitsu_bp_softc *sc) 364 { 365 const struct sysctlnode *rnode; 366 int access; 367 uint8_t dummy_level; 368 bool dummy_state; 369 bool brightness, pointer; 370 371 brightness = (fujitsu_bp_get_brightness(sc, &dummy_level) == 0); 372 pointer = (fujitsu_bp_get_pointer(sc, &dummy_state) == 0); 373 374 if (brightness || pointer) { 375 if ((sysctl_createv(&sc->sc_log, 0, NULL, &rnode, 376 0, CTLTYPE_NODE, "hw", NULL, 377 NULL, 0, NULL, 0, 378 CTL_HW, CTL_EOL)) != 0) 379 goto fail; 380 381 if ((sysctl_createv(&sc->sc_log, 0, &rnode, &rnode, 382 0, CTLTYPE_NODE, "acpi", NULL, 383 NULL, 0, NULL, 0, 384 CTL_CREATE, CTL_EOL)) != 0) 385 goto fail; 386 387 if ((sysctl_createv(&sc->sc_log, 0, &rnode, &rnode, 388 0, CTLTYPE_NODE, device_xname(sc->sc_dev), 389 SYSCTL_DESCR("Fujitsu brightness & pointer controls"), 390 NULL, 0, NULL, 0, 391 CTL_CREATE, CTL_EOL)) != 0) 392 goto fail; 393 } 394 395 if (brightness) { 396 if (sc->sc_caps & FUJITSU_BP_CAP_SBLL) 397 access = CTLFLAG_READWRITE; 398 else 399 access = CTLFLAG_READONLY; 400 401 (void)sysctl_createv(&sc->sc_log, 0, &rnode, NULL, 402 access, CTLTYPE_INT, "brightness", 403 SYSCTL_DESCR("Internal DFP brightness level"), 404 fujitsu_bp_sysctl_brightness, 0, (void *)sc, 0, 405 CTL_CREATE, CTL_EOL); 406 } 407 408 if (pointer) { 409 if (sc->sc_caps & FUJITSU_BP_CAP_SMOU) 410 access = CTLFLAG_READWRITE; 411 else 412 access = CTLFLAG_READONLY; 413 414 (void)sysctl_createv(&sc->sc_log, 0, &rnode, NULL, 415 access, CTLTYPE_BOOL, "pointer", 416 SYSCTL_DESCR("Internal pointer switch state"), 417 fujitsu_bp_sysctl_pointer, 0, (void *)sc, 0, 418 CTL_CREATE, CTL_EOL); 419 } 420 421 return; 422 423 fail: 424 aprint_error_dev(sc->sc_dev, "couldn't add sysctl nodes\n"); 425 } 426 427 static int 428 fujitsu_bp_sysctl_brightness(SYSCTLFN_ARGS) 429 { 430 struct sysctlnode node; 431 struct fujitsu_bp_softc *sc; 432 int val, error; 433 uint8_t level; 434 435 node = *rnode; 436 sc = node.sysctl_data; 437 438 mutex_enter(&sc->sc_mtx); 439 error = fujitsu_bp_get_brightness(sc, &level); 440 mutex_exit(&sc->sc_mtx); 441 442 if (error) 443 return error; 444 445 val = (int)level; 446 node.sysctl_data = &val; 447 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 448 if (error || newp == NULL) 449 return error; 450 451 if (val < 0 || val > (uint8_t)(sc->sc_brightness_nlevels - 1)) 452 return EINVAL; 453 454 mutex_enter(&sc->sc_mtx); 455 error = fujitsu_bp_set_brightness(sc, (uint8_t)val); 456 mutex_exit(&sc->sc_mtx); 457 458 return error; 459 } 460 461 static int 462 fujitsu_bp_sysctl_pointer(SYSCTLFN_ARGS) 463 { 464 struct sysctlnode node; 465 struct fujitsu_bp_softc *sc; 466 bool val; 467 int error; 468 469 node = *rnode; 470 sc = node.sysctl_data; 471 472 mutex_enter(&sc->sc_mtx); 473 error = fujitsu_bp_get_pointer(sc, &val); 474 mutex_exit(&sc->sc_mtx); 475 476 if (error) 477 return error; 478 479 node.sysctl_data = &val; 480 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 481 if (error || newp == NULL) 482 return error; 483 484 mutex_enter(&sc->sc_mtx); 485 error = fujitsu_bp_set_pointer(sc, val); 486 mutex_exit(&sc->sc_mtx); 487 488 return error; 489 } 490 491 static int 492 fujitsu_bp_get_hks(struct fujitsu_bp_softc *sc, uint32_t *valuep) 493 { 494 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 495 ACPI_INTEGER val; 496 ACPI_STATUS rv; 497 498 if (!(sc->sc_caps & FUJITSU_BP_CAP_GHKS)) 499 return ENODEV; 500 501 rv = acpi_eval_integer(hdl, "GHKS", &val); 502 if (ACPI_FAILURE(rv)) { 503 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 504 acpi_name(hdl), "GHKS", AcpiFormatException(rv)); 505 return EIO; 506 } 507 508 *valuep = (uint32_t)val; 509 510 return 0; 511 } 512 513 static int 514 fujitsu_bp_init_brightness(struct fujitsu_bp_softc *sc, uint8_t *valuep) 515 { 516 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 517 ACPI_INTEGER val; 518 ACPI_STATUS rv; 519 520 if (!(sc->sc_caps & FUJITSU_BP_CAP_RBLL)) 521 return ENODEV; 522 523 rv = acpi_eval_integer(hdl, "RBLL", &val); 524 if (ACPI_FAILURE(rv)) { 525 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 526 acpi_name(hdl), "RBLL", AcpiFormatException(rv)); 527 return EIO; 528 } 529 530 if (val > UINT8_MAX) 531 return ERANGE; 532 533 *valuep = (uint8_t)val; 534 535 return 0; 536 } 537 538 static int 539 fujitsu_bp_get_brightness(struct fujitsu_bp_softc *sc, uint8_t *valuep) 540 { 541 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 542 ACPI_INTEGER val; 543 ACPI_STATUS rv; 544 545 if (!(sc->sc_caps & FUJITSU_BP_CAP_GBLL)) 546 return ENODEV; 547 548 rv = acpi_eval_integer(hdl, "GBLL", &val); 549 if (ACPI_FAILURE(rv)) { 550 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 551 acpi_name(hdl), "GBLL", AcpiFormatException(rv)); 552 return EIO; 553 } 554 555 /* Clear modification bits. */ 556 val &= ~FUJITSU_BP_MODMASK; 557 558 if (val > UINT8_MAX) 559 return ERANGE; 560 561 *valuep = (uint8_t)val; 562 563 return 0; 564 } 565 566 static int 567 fujitsu_bp_set_brightness(struct fujitsu_bp_softc *sc, uint8_t val) 568 { 569 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 570 ACPI_STATUS rv; 571 572 if (!(sc->sc_caps & FUJITSU_BP_CAP_SBLL)) 573 return ENODEV; 574 575 rv = acpi_eval_set_integer(hdl, "SBLL", val); 576 577 if (ACPI_FAILURE(rv)) { 578 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 579 acpi_name(hdl), "SBLL", AcpiFormatException(rv)); 580 return EIO; 581 } 582 583 return 0; 584 } 585 586 static int 587 fujitsu_bp_get_pointer(struct fujitsu_bp_softc *sc, bool *valuep) 588 { 589 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 590 ACPI_INTEGER val; 591 ACPI_STATUS rv; 592 593 if (!(sc->sc_caps & FUJITSU_BP_CAP_GMOU)) 594 return ENODEV; 595 596 rv = acpi_eval_integer(hdl, "GMOU", &val); 597 if (ACPI_FAILURE(rv)) { 598 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 599 acpi_name(hdl), "GMOU", AcpiFormatException(rv)); 600 return EIO; 601 } 602 603 /* Clear modification bits. */ 604 val &= ~FUJITSU_BP_MODMASK; 605 606 if (val > 1) 607 return ERANGE; 608 609 *valuep = (bool)val; 610 611 return 0; 612 } 613 614 static int 615 fujitsu_bp_set_pointer(struct fujitsu_bp_softc *sc, bool val) 616 { 617 ACPI_HANDLE hdl = sc->sc_node->ad_handle; 618 ACPI_STATUS rv; 619 620 if (!(sc->sc_caps & FUJITSU_BP_CAP_SMOU)) 621 return ENODEV; 622 623 rv = acpi_eval_set_integer(hdl, "SMOU", val); 624 625 if (ACPI_FAILURE(rv)) { 626 aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n", 627 acpi_name(hdl), "SMOU", AcpiFormatException(rv)); 628 return EIO; 629 } 630 631 return 0; 632 } 633 634 /* 635 * fujitusu_bp_cap: 636 * 637 * Returns true if and only if (a) the object handle.path exists and 638 * (b) this object is a method or has the given type. 639 */ 640 static bool 641 fujitsu_bp_cap(ACPI_HANDLE handle, const char *path, ACPI_OBJECT_TYPE type) 642 { 643 ACPI_HANDLE hdl; 644 ACPI_OBJECT_TYPE typ; 645 646 KASSERT(handle != NULL); 647 648 if (ACPI_FAILURE(AcpiGetHandle(handle, path, &hdl))) 649 return false; 650 651 if (ACPI_FAILURE(AcpiGetType(hdl, &typ))) 652 return false; 653 654 if (typ != ACPI_TYPE_METHOD && typ != type) 655 return false; 656 657 return true; 658 } 659 660 MODULE(MODULE_CLASS_DRIVER, fujbp, NULL); 661 662 #ifdef _MODULE 663 #include "ioconf.c" 664 #endif 665 666 static int 667 fujbp_modcmd(modcmd_t cmd, void *aux) 668 { 669 int rv = 0; 670 671 switch (cmd) { 672 673 case MODULE_CMD_INIT: 674 675 #ifdef _MODULE 676 rv = config_init_component(cfdriver_ioconf_fujbp, 677 cfattach_ioconf_fujbp, cfdata_ioconf_fujbp); 678 #endif 679 break; 680 681 case MODULE_CMD_FINI: 682 683 #ifdef _MODULE 684 rv = config_fini_component(cfdriver_ioconf_fujbp, 685 cfattach_ioconf_fujbp, cfdata_ioconf_fujbp); 686 #endif 687 break; 688 689 default: 690 rv = ENOTTY; 691 } 692 693 return rv; 694 } 695
Indexes created Sat Sep 27 14:09:57 GMT 2025