| 1 | /* $NetBSD: fujhk_acpi.c,v 1.4 2015/04/23 23:23:00 pgoyette 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 | #include <sys/cdefs.h> |
| 33 | __KERNEL_RCSID(0, "$NetBSD: fujhk_acpi.c,v 1.4 2015/04/23 23:23:00 pgoyette Exp $" ); |
| 34 | |
| 35 | #include <sys/param.h> |
| 36 | #include <sys/device.h> |
| 37 | #include <sys/module.h> |
| 38 | #include <sys/mutex.h> |
| 39 | #include <sys/sysctl.h> |
| 40 | |
| 41 | #include <dev/sysmon/sysmonvar.h> |
| 42 | |
| 43 | #include <dev/acpi/acpireg.h> |
| 44 | #include <dev/acpi/acpivar.h> |
| 45 | |
| 46 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
| 47 | ACPI_MODULE_NAME ("fujhk_acpi" ) |
| 48 | |
| 49 | #define FUJITSU_HK_NOTIFY 0x80 |
| 50 | #define FUJITSU_HK_MODMASK 0xc0000000 |
| 51 | |
| 52 | /* Values returned by the GIRB method. */ |
| 53 | #define FUJITSU_HK_IRB_HOTKEY_RELEASE 0x0 |
| 54 | #define FUJITSU_HK_IRB_HOTKEY_PRESS(x) (0x410 | x) |
| 55 | |
| 56 | /* Hotkey index of a value returned by the GIRB method. */ |
| 57 | #define FUJITSU_HK_IRB_HOTKEY_INDEX(x) (x & 0x3) |
| 58 | |
| 59 | /* Values for the first argument of the FUNC method. */ |
| 60 | #define FUJITSU_FUNC_TARGET_BACKLIGHT 0x1004 |
| 61 | |
| 62 | /* Values for the second argument of the FUNC method. */ |
| 63 | #define FUJITSU_FUNC_COMMAND_SET 0x1 |
| 64 | #define FUJITSU_FUNC_COMMAND_GET 0x2 |
| 65 | |
| 66 | /* Backlight values for the FUNC method. */ |
| 67 | #define FUJITSU_FUNC_BACKLIGHT_ON 0x0 |
| 68 | #define FUJITSU_FUNC_BACKLIGHT_REDUCED 0x2 |
| 69 | #define FUJITSU_FUNC_BACKLIGHT_OFF 0x3 |
| 70 | |
| 71 | /* Value returned by FUNC on invalid arguments. */ |
| 72 | #define FUJITSU_FUNC_INVALID_ARGS 0x80000000 |
| 73 | |
| 74 | /* ACPI Fujitsu hotkeys controller capabilities (methods). */ |
| 75 | #define FUJITSU_HK_CAP_GIRB __BIT(0) |
| 76 | #define FUJITSU_HK_CAP_FUNC __BIT(1) |
| 77 | |
| 78 | struct fujitsu_hk_softc { |
| 79 | device_t sc_dev; |
| 80 | struct acpi_devnode *sc_node; |
| 81 | struct sysctllog *sc_log; |
| 82 | kmutex_t sc_mtx; |
| 83 | uint16_t sc_caps; |
| 84 | #define FUJITSU_HK_PSW_COUNT 4 |
| 85 | struct sysmon_pswitch sc_smpsw[FUJITSU_HK_PSW_COUNT]; |
| 86 | char sc_smpsw_name[FUJITSU_HK_PSW_COUNT][16]; |
| 87 | }; |
| 88 | |
| 89 | static const char * const fujitsu_hk_hid[] = { |
| 90 | "FUJ02E3" , |
| 91 | NULL |
| 92 | }; |
| 93 | |
| 94 | static int fujitsu_hk_match(device_t, cfdata_t, void *); |
| 95 | static void fujitsu_hk_attach(device_t, device_t, void *); |
| 96 | static int fujitsu_hk_detach(device_t, int); |
| 97 | static bool fujitsu_hk_suspend(device_t, const pmf_qual_t *); |
| 98 | static bool fujitsu_hk_resume(device_t, const pmf_qual_t *); |
| 99 | static uint16_t fujitsu_hk_capabilities(const struct acpi_devnode *); |
| 100 | static void fujitsu_hk_notify_handler(ACPI_HANDLE, uint32_t, void *); |
| 101 | static void fujitsu_hk_event_callback(void *); |
| 102 | static void fujitsu_hk_sysctl_setup(struct fujitsu_hk_softc *); |
| 103 | static int fujitsu_hk_sysctl_backlight(SYSCTLFN_PROTO); |
| 104 | static int fujitsu_hk_get_irb(struct fujitsu_hk_softc *, uint32_t *); |
| 105 | static int fujitsu_hk_get_backlight(struct fujitsu_hk_softc *, bool *); |
| 106 | static int fujitsu_hk_set_backlight(struct fujitsu_hk_softc *, bool); |
| 107 | static bool fujitsu_hk_cap(ACPI_HANDLE, const char *, ACPI_OBJECT_TYPE); |
| 108 | static ACPI_STATUS fujitsu_hk_eval_nary_integer(ACPI_HANDLE, |
| 109 | const char *, const |
| 110 | ACPI_INTEGER *, uint8_t, ACPI_INTEGER *); |
| 111 | |
| 112 | CFATTACH_DECL_NEW(fujhk, sizeof(struct fujitsu_hk_softc), |
| 113 | fujitsu_hk_match, fujitsu_hk_attach, fujitsu_hk_detach, NULL); |
| 114 | |
| 115 | static int |
| 116 | fujitsu_hk_match(device_t parent, cfdata_t match, void *aux) |
| 117 | { |
| 118 | struct acpi_attach_args *aa = aux; |
| 119 | |
| 120 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
| 121 | return 0; |
| 122 | |
| 123 | return acpi_match_hid(aa->aa_node->ad_devinfo, fujitsu_hk_hid); |
| 124 | } |
| 125 | |
| 126 | static void |
| 127 | fujitsu_hk_attach(device_t parent, device_t self, void *aux) |
| 128 | { |
| 129 | struct fujitsu_hk_softc *sc = device_private(self); |
| 130 | struct acpi_attach_args *aa = aux; |
| 131 | struct acpi_devnode *ad = aa->aa_node; |
| 132 | int i; |
| 133 | |
| 134 | aprint_naive(": Fujitsu Hotkeys\n" ); |
| 135 | aprint_normal(": Fujitsu Hotkeys\n" ); |
| 136 | |
| 137 | sc->sc_dev = self; |
| 138 | sc->sc_node = ad; |
| 139 | sc->sc_log = NULL; |
| 140 | sc->sc_caps = fujitsu_hk_capabilities(ad); |
| 141 | |
| 142 | mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); |
| 143 | |
| 144 | for (i = 0; i < FUJITSU_HK_PSW_COUNT; i++) { |
| 145 | (void)snprintf(sc->sc_smpsw_name[i], |
| 146 | sizeof(sc->sc_smpsw_name[i]), "%s-%d" , |
| 147 | device_xname(self), i); |
| 148 | sc->sc_smpsw[i].smpsw_name = sc->sc_smpsw_name[i]; |
| 149 | sc->sc_smpsw[i].smpsw_type = PSWITCH_TYPE_HOTKEY; |
| 150 | (void)sysmon_pswitch_register(&sc->sc_smpsw[i]); |
| 151 | } |
| 152 | |
| 153 | fujitsu_hk_sysctl_setup(sc); |
| 154 | |
| 155 | (void)pmf_device_register(self, fujitsu_hk_suspend, fujitsu_hk_resume); |
| 156 | (void)acpi_register_notify(sc->sc_node, fujitsu_hk_notify_handler); |
| 157 | } |
| 158 | |
| 159 | static int |
| 160 | fujitsu_hk_detach(device_t self, int flags) |
| 161 | { |
| 162 | struct fujitsu_hk_softc *sc = device_private(self); |
| 163 | int i; |
| 164 | |
| 165 | pmf_device_deregister(self); |
| 166 | |
| 167 | if (sc->sc_log != NULL) |
| 168 | sysctl_teardown(&sc->sc_log); |
| 169 | |
| 170 | acpi_deregister_notify(sc->sc_node); |
| 171 | |
| 172 | for (i = 0; i < FUJITSU_HK_PSW_COUNT; i++) |
| 173 | sysmon_pswitch_unregister(&sc->sc_smpsw[i]); |
| 174 | |
| 175 | mutex_destroy(&sc->sc_mtx); |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | /* |
| 181 | * On the P7120, the backlight needs to be enabled after resume, since the |
| 182 | * laptop wakes up with the backlight off (even if it was on before suspend). |
| 183 | */ |
| 184 | static bool |
| 185 | fujitsu_hk_suspend(device_t self, const pmf_qual_t *qual) |
| 186 | { |
| 187 | struct fujitsu_hk_softc *sc = device_private(self); |
| 188 | |
| 189 | mutex_enter(&sc->sc_mtx); |
| 190 | (void)fujitsu_hk_set_backlight(sc, false); |
| 191 | mutex_exit(&sc->sc_mtx); |
| 192 | |
| 193 | return true; |
| 194 | } |
| 195 | |
| 196 | static bool |
| 197 | fujitsu_hk_resume(device_t self, const pmf_qual_t *qual) |
| 198 | { |
| 199 | struct fujitsu_hk_softc *sc = device_private(self); |
| 200 | |
| 201 | mutex_enter(&sc->sc_mtx); |
| 202 | (void)fujitsu_hk_set_backlight(sc, true); |
| 203 | mutex_exit(&sc->sc_mtx); |
| 204 | |
| 205 | return true; |
| 206 | } |
| 207 | |
| 208 | static uint16_t |
| 209 | fujitsu_hk_capabilities(const struct acpi_devnode *ad) |
| 210 | { |
| 211 | uint16_t caps; |
| 212 | |
| 213 | caps = 0; |
| 214 | |
| 215 | if (fujitsu_hk_cap(ad->ad_handle, "GIRB" , ACPI_TYPE_INTEGER)) |
| 216 | caps |= FUJITSU_HK_CAP_GIRB; |
| 217 | |
| 218 | if (fujitsu_hk_cap(ad->ad_handle, "FUNC" , ACPI_TYPE_METHOD)) |
| 219 | caps |= FUJITSU_HK_CAP_FUNC; |
| 220 | |
| 221 | return caps; |
| 222 | } |
| 223 | |
| 224 | static void |
| 225 | fujitsu_hk_notify_handler(ACPI_HANDLE handle, uint32_t evt, void *context) |
| 226 | { |
| 227 | struct fujitsu_hk_softc *sc = device_private(context); |
| 228 | static const int handler = OSL_NOTIFY_HANDLER; |
| 229 | |
| 230 | switch (evt) { |
| 231 | |
| 232 | case FUJITSU_HK_NOTIFY: |
| 233 | (void)AcpiOsExecute(handler, fujitsu_hk_event_callback, sc); |
| 234 | break; |
| 235 | |
| 236 | default: |
| 237 | aprint_debug_dev(sc->sc_dev, "unknown notify 0x%02X\n" , evt); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | static void |
| 242 | fujitsu_hk_event_callback(void *arg) |
| 243 | { |
| 244 | struct fujitsu_hk_softc *sc = arg; |
| 245 | const int max_irb_buffer_size = 100; |
| 246 | uint32_t irb; |
| 247 | int i, index; |
| 248 | |
| 249 | for (i = 0; i < max_irb_buffer_size; i++) { |
| 250 | if (fujitsu_hk_get_irb(sc, &irb) || irb == 0) |
| 251 | return; |
| 252 | |
| 253 | switch (irb & ~FUJITSU_HK_MODMASK) { |
| 254 | case FUJITSU_HK_IRB_HOTKEY_RELEASE: |
| 255 | /* Hotkey button release event (nothing to do). */ |
| 256 | break; |
| 257 | case FUJITSU_HK_IRB_HOTKEY_PRESS(0): |
| 258 | case FUJITSU_HK_IRB_HOTKEY_PRESS(1): |
| 259 | case FUJITSU_HK_IRB_HOTKEY_PRESS(2): |
| 260 | case FUJITSU_HK_IRB_HOTKEY_PRESS(3): |
| 261 | /* Hotkey button press event. */ |
| 262 | index = FUJITSU_HK_IRB_HOTKEY_INDEX(irb); |
| 263 | sysmon_pswitch_event(&sc->sc_smpsw[index], |
| 264 | PSWITCH_EVENT_PRESSED); |
| 265 | break; |
| 266 | default: |
| 267 | aprint_error_dev(sc->sc_dev, |
| 268 | "unknown GIRB result: 0x%" PRIx32"\n" , irb); |
| 269 | break; |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | static void |
| 275 | fujitsu_hk_sysctl_setup(struct fujitsu_hk_softc *sc) |
| 276 | { |
| 277 | const struct sysctlnode *rnode; |
| 278 | bool dummy_state; |
| 279 | |
| 280 | if (fujitsu_hk_get_backlight(sc, &dummy_state) == 0) { |
| 281 | if ((sysctl_createv(&sc->sc_log, 0, NULL, &rnode, |
| 282 | 0, CTLTYPE_NODE, "acpi" , NULL, |
| 283 | NULL, 0, NULL, 0, |
| 284 | CTL_HW, CTL_CREATE, CTL_EOL)) != 0) |
| 285 | goto fail; |
| 286 | |
| 287 | if ((sysctl_createv(&sc->sc_log, 0, &rnode, &rnode, |
| 288 | 0, CTLTYPE_NODE, device_xname(sc->sc_dev), |
| 289 | SYSCTL_DESCR("Fujitsu hotkeys controls" ), |
| 290 | NULL, 0, NULL, 0, |
| 291 | CTL_CREATE, CTL_EOL)) != 0) |
| 292 | goto fail; |
| 293 | |
| 294 | (void)sysctl_createv(&sc->sc_log, 0, &rnode, NULL, |
| 295 | CTLFLAG_READWRITE, CTLTYPE_BOOL, "backlight" , |
| 296 | SYSCTL_DESCR("Internal DFP backlight switch state" ), |
| 297 | fujitsu_hk_sysctl_backlight, 0, (void *)sc, 0, |
| 298 | CTL_CREATE, CTL_EOL); |
| 299 | } |
| 300 | |
| 301 | return; |
| 302 | |
| 303 | fail: |
| 304 | aprint_error_dev(sc->sc_dev, "couldn't add sysctl nodes\n" ); |
| 305 | } |
| 306 | |
| 307 | static int |
| 308 | fujitsu_hk_sysctl_backlight(SYSCTLFN_ARGS) |
| 309 | { |
| 310 | struct sysctlnode node; |
| 311 | struct fujitsu_hk_softc *sc; |
| 312 | bool val; |
| 313 | int error; |
| 314 | |
| 315 | node = *rnode; |
| 316 | sc = node.sysctl_data; |
| 317 | |
| 318 | mutex_enter(&sc->sc_mtx); |
| 319 | error = fujitsu_hk_get_backlight(sc, &val); |
| 320 | mutex_exit(&sc->sc_mtx); |
| 321 | |
| 322 | if (error) |
| 323 | return error; |
| 324 | |
| 325 | node.sysctl_data = &val; |
| 326 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 327 | if (error || newp == NULL) |
| 328 | return error; |
| 329 | |
| 330 | mutex_enter(&sc->sc_mtx); |
| 331 | error = fujitsu_hk_set_backlight(sc, val); |
| 332 | mutex_exit(&sc->sc_mtx); |
| 333 | |
| 334 | return error; |
| 335 | } |
| 336 | |
| 337 | static int |
| 338 | fujitsu_hk_get_irb(struct fujitsu_hk_softc *sc, uint32_t *valuep) |
| 339 | { |
| 340 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 341 | ACPI_INTEGER val; |
| 342 | ACPI_STATUS rv; |
| 343 | |
| 344 | if (!(sc->sc_caps & FUJITSU_HK_CAP_GIRB)) |
| 345 | return ENODEV; |
| 346 | |
| 347 | rv = acpi_eval_integer(hdl, "GIRB" , &val); |
| 348 | if (ACPI_FAILURE(rv)) { |
| 349 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 350 | acpi_name(hdl), "GIRB" , AcpiFormatException(rv)); |
| 351 | return EIO; |
| 352 | } |
| 353 | |
| 354 | *valuep = (uint32_t)val; |
| 355 | |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static int |
| 360 | fujitsu_hk_get_backlight(struct fujitsu_hk_softc *sc, bool *valuep) |
| 361 | { |
| 362 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 363 | ACPI_INTEGER args[] = { |
| 364 | FUJITSU_FUNC_TARGET_BACKLIGHT, |
| 365 | FUJITSU_FUNC_COMMAND_GET, |
| 366 | 0x4, |
| 367 | 0x0 |
| 368 | }; |
| 369 | ACPI_INTEGER val; |
| 370 | ACPI_STATUS rv; |
| 371 | |
| 372 | if (!(sc->sc_caps & FUJITSU_HK_CAP_FUNC)) |
| 373 | return ENODEV; |
| 374 | |
| 375 | rv = fujitsu_hk_eval_nary_integer(hdl, "FUNC" , args, 4, &val); |
| 376 | if (ACPI_FAILURE(rv)) { |
| 377 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 378 | acpi_name(hdl), "FUNC" , AcpiFormatException(rv)); |
| 379 | return EIO; |
| 380 | } |
| 381 | |
| 382 | if (val == FUJITSU_FUNC_INVALID_ARGS) |
| 383 | return ENODEV; |
| 384 | |
| 385 | if (val == FUJITSU_FUNC_BACKLIGHT_ON) |
| 386 | *valuep = true; |
| 387 | else if (val == FUJITSU_FUNC_BACKLIGHT_OFF) |
| 388 | *valuep = false; |
| 389 | else |
| 390 | return ERANGE; |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static int |
| 396 | fujitsu_hk_set_backlight(struct fujitsu_hk_softc *sc, bool value) |
| 397 | { |
| 398 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 399 | ACPI_INTEGER args[] = { |
| 400 | FUJITSU_FUNC_TARGET_BACKLIGHT, |
| 401 | FUJITSU_FUNC_COMMAND_SET, |
| 402 | 0x4, |
| 403 | 0x0 |
| 404 | }; |
| 405 | ACPI_INTEGER val; |
| 406 | ACPI_STATUS rv; |
| 407 | |
| 408 | if (!(sc->sc_caps & FUJITSU_HK_CAP_FUNC)) |
| 409 | return ENODEV; |
| 410 | |
| 411 | if (value) |
| 412 | args[3] = FUJITSU_FUNC_BACKLIGHT_ON; |
| 413 | else |
| 414 | args[3] = FUJITSU_FUNC_BACKLIGHT_OFF; |
| 415 | |
| 416 | rv = fujitsu_hk_eval_nary_integer(hdl, "FUNC" , args, 4, &val); |
| 417 | if (ACPI_FAILURE(rv)) { |
| 418 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 419 | acpi_name(hdl), "FUNC" , AcpiFormatException(rv)); |
| 420 | return EIO; |
| 421 | } |
| 422 | |
| 423 | if (val == FUJITSU_FUNC_INVALID_ARGS) |
| 424 | return ENODEV; |
| 425 | |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * fujitsu_hk_cap: |
| 431 | * |
| 432 | * Returns true if and only if (a) the object handle.path exists and |
| 433 | * (b) this object is a method or has the given type. |
| 434 | */ |
| 435 | static bool |
| 436 | fujitsu_hk_cap(ACPI_HANDLE handle, const char *path, ACPI_OBJECT_TYPE type) |
| 437 | { |
| 438 | ACPI_HANDLE hdl; |
| 439 | ACPI_OBJECT_TYPE typ; |
| 440 | |
| 441 | KASSERT(handle != NULL); |
| 442 | |
| 443 | if (ACPI_FAILURE(AcpiGetHandle(handle, path, &hdl))) |
| 444 | return false; |
| 445 | |
| 446 | if (ACPI_FAILURE(AcpiGetType(hdl, &typ))) |
| 447 | return false; |
| 448 | |
| 449 | if (typ != ACPI_TYPE_METHOD && typ != type) |
| 450 | return false; |
| 451 | |
| 452 | return true; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * fujitsu_hk_eval_nary_integer: |
| 457 | * |
| 458 | * Evaluate an object that takes as input an arbitrary (possible null) |
| 459 | * number of integer parameters. If res is not NULL, then *res is filled |
| 460 | * with the result of the evaluation, and AE_NULL_OBJECT is returned if |
| 461 | * the evaluation produced no result. |
| 462 | */ |
| 463 | static ACPI_STATUS |
| 464 | fujitsu_hk_eval_nary_integer(ACPI_HANDLE handle, const char *path, const |
| 465 | ACPI_INTEGER *args, uint8_t count, ACPI_INTEGER *res) |
| 466 | { |
| 467 | ACPI_OBJECT_LIST paramlist; |
| 468 | ACPI_OBJECT retobj, objpool[4], *argobjs; |
| 469 | ACPI_BUFFER buf; |
| 470 | ACPI_STATUS rv; |
| 471 | uint8_t i; |
| 472 | |
| 473 | /* Require that (args == NULL) if and only if (count == 0). */ |
| 474 | KASSERT((args != NULL || count == 0) && (args == NULL || count != 0)); |
| 475 | |
| 476 | /* The object pool should be large enough for our callers. */ |
| 477 | KASSERT(count <= __arraycount(objpool)); |
| 478 | |
| 479 | if (handle == NULL) |
| 480 | handle = ACPI_ROOT_OBJECT; |
| 481 | |
| 482 | /* Convert the given array args into an array of ACPI objects. */ |
| 483 | argobjs = objpool; |
| 484 | for (i = 0; i < count; i++) { |
| 485 | argobjs[i].Type = ACPI_TYPE_INTEGER; |
| 486 | argobjs[i].Integer.Value = args[i]; |
| 487 | } |
| 488 | |
| 489 | paramlist.Count = count; |
| 490 | paramlist.Pointer = argobjs; |
| 491 | |
| 492 | (void)memset(&retobj, 0, sizeof(retobj)); |
| 493 | buf.Pointer = &retobj; |
| 494 | buf.Length = sizeof(retobj); |
| 495 | |
| 496 | rv = AcpiEvaluateObject(handle, path, ¶mlist, &buf); |
| 497 | |
| 498 | if (ACPI_FAILURE(rv)) |
| 499 | return rv; |
| 500 | |
| 501 | /* |
| 502 | * If a return value is expected and desired (i.e. res != NULL), |
| 503 | * then copy the result into *res. |
| 504 | */ |
| 505 | if (res != NULL) { |
| 506 | if (buf.Length == 0) |
| 507 | return AE_NULL_OBJECT; |
| 508 | |
| 509 | if (retobj.Type != ACPI_TYPE_INTEGER) |
| 510 | return AE_TYPE; |
| 511 | |
| 512 | *res = retobj.Integer.Value; |
| 513 | } |
| 514 | |
| 515 | return AE_OK; |
| 516 | } |
| 517 | |
| 518 | MODULE(MODULE_CLASS_DRIVER, fujhk, "sysmon_power" ); |
| 519 | |
| 520 | #ifdef _MODULE |
| 521 | #include "ioconf.c" |
| 522 | #endif |
| 523 | |
| 524 | static int |
| 525 | fujhk_modcmd(modcmd_t cmd, void *aux) |
| 526 | { |
| 527 | int rv = 0; |
| 528 | |
| 529 | switch (cmd) { |
| 530 | |
| 531 | case MODULE_CMD_INIT: |
| 532 | |
| 533 | #ifdef _MODULE |
| 534 | rv = config_init_component(cfdriver_ioconf_fujhk, |
| 535 | cfattach_ioconf_fujhk, cfdata_ioconf_fujhk); |
| 536 | #endif |
| 537 | break; |
| 538 | |
| 539 | case MODULE_CMD_FINI: |
| 540 | |
| 541 | #ifdef _MODULE |
| 542 | rv = config_fini_component(cfdriver_ioconf_fujhk, |
| 543 | cfattach_ioconf_fujhk, cfdata_ioconf_fujhk); |
| 544 | #endif |
| 545 | break; |
| 546 | |
| 547 | default: |
| 548 | rv = ENOTTY; |
| 549 | } |
| 550 | |
| 551 | return rv; |
| 552 | } |
| 553 | |