| 1 | /* $NetBSD: fujbp_acpi.c,v 1.4 2014/02/25 18:30:09 pooka 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 1.4 2014/02/25 18:30:09 pooka 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, "acpi" , NULL, |
| 377 | NULL, 0, NULL, 0, |
| 378 | CTL_HW, CTL_CREATE, CTL_EOL)) != 0) |
| 379 | goto fail; |
| 380 | |
| 381 | if ((sysctl_createv(&sc->sc_log, 0, &rnode, &rnode, |
| 382 | 0, CTLTYPE_NODE, device_xname(sc->sc_dev), |
| 383 | SYSCTL_DESCR("Fujitsu brightness & pointer controls" ), |
| 384 | NULL, 0, NULL, 0, |
| 385 | CTL_CREATE, CTL_EOL)) != 0) |
| 386 | goto fail; |
| 387 | } |
| 388 | |
| 389 | if (brightness) { |
| 390 | if (sc->sc_caps & FUJITSU_BP_CAP_SBLL) |
| 391 | access = CTLFLAG_READWRITE; |
| 392 | else |
| 393 | access = CTLFLAG_READONLY; |
| 394 | |
| 395 | (void)sysctl_createv(&sc->sc_log, 0, &rnode, NULL, |
| 396 | access, CTLTYPE_INT, "brightness" , |
| 397 | SYSCTL_DESCR("Internal DFP brightness level" ), |
| 398 | fujitsu_bp_sysctl_brightness, 0, (void *)sc, 0, |
| 399 | CTL_CREATE, CTL_EOL); |
| 400 | } |
| 401 | |
| 402 | if (pointer) { |
| 403 | if (sc->sc_caps & FUJITSU_BP_CAP_SMOU) |
| 404 | access = CTLFLAG_READWRITE; |
| 405 | else |
| 406 | access = CTLFLAG_READONLY; |
| 407 | |
| 408 | (void)sysctl_createv(&sc->sc_log, 0, &rnode, NULL, |
| 409 | access, CTLTYPE_BOOL, "pointer" , |
| 410 | SYSCTL_DESCR("Internal pointer switch state" ), |
| 411 | fujitsu_bp_sysctl_pointer, 0, (void *)sc, 0, |
| 412 | CTL_CREATE, CTL_EOL); |
| 413 | } |
| 414 | |
| 415 | return; |
| 416 | |
| 417 | fail: |
| 418 | aprint_error_dev(sc->sc_dev, "couldn't add sysctl nodes\n" ); |
| 419 | } |
| 420 | |
| 421 | static int |
| 422 | fujitsu_bp_sysctl_brightness(SYSCTLFN_ARGS) |
| 423 | { |
| 424 | struct sysctlnode node; |
| 425 | struct fujitsu_bp_softc *sc; |
| 426 | int val, error; |
| 427 | uint8_t level; |
| 428 | |
| 429 | node = *rnode; |
| 430 | sc = node.sysctl_data; |
| 431 | |
| 432 | mutex_enter(&sc->sc_mtx); |
| 433 | error = fujitsu_bp_get_brightness(sc, &level); |
| 434 | mutex_exit(&sc->sc_mtx); |
| 435 | |
| 436 | if (error) |
| 437 | return error; |
| 438 | |
| 439 | val = (int)level; |
| 440 | node.sysctl_data = &val; |
| 441 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 442 | if (error || newp == NULL) |
| 443 | return error; |
| 444 | |
| 445 | if (val < 0 || val > (uint8_t)(sc->sc_brightness_nlevels - 1)) |
| 446 | return EINVAL; |
| 447 | |
| 448 | mutex_enter(&sc->sc_mtx); |
| 449 | error = fujitsu_bp_set_brightness(sc, (uint8_t)val); |
| 450 | mutex_exit(&sc->sc_mtx); |
| 451 | |
| 452 | return error; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | fujitsu_bp_sysctl_pointer(SYSCTLFN_ARGS) |
| 457 | { |
| 458 | struct sysctlnode node; |
| 459 | struct fujitsu_bp_softc *sc; |
| 460 | bool val; |
| 461 | int error; |
| 462 | |
| 463 | node = *rnode; |
| 464 | sc = node.sysctl_data; |
| 465 | |
| 466 | mutex_enter(&sc->sc_mtx); |
| 467 | error = fujitsu_bp_get_pointer(sc, &val); |
| 468 | mutex_exit(&sc->sc_mtx); |
| 469 | |
| 470 | if (error) |
| 471 | return error; |
| 472 | |
| 473 | node.sysctl_data = &val; |
| 474 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 475 | if (error || newp == NULL) |
| 476 | return error; |
| 477 | |
| 478 | mutex_enter(&sc->sc_mtx); |
| 479 | error = fujitsu_bp_set_pointer(sc, val); |
| 480 | mutex_exit(&sc->sc_mtx); |
| 481 | |
| 482 | return error; |
| 483 | } |
| 484 | |
| 485 | static int |
| 486 | fujitsu_bp_get_hks(struct fujitsu_bp_softc *sc, uint32_t *valuep) |
| 487 | { |
| 488 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 489 | ACPI_INTEGER val; |
| 490 | ACPI_STATUS rv; |
| 491 | |
| 492 | if (!(sc->sc_caps & FUJITSU_BP_CAP_GHKS)) |
| 493 | return ENODEV; |
| 494 | |
| 495 | rv = acpi_eval_integer(hdl, "GHKS" , &val); |
| 496 | if (ACPI_FAILURE(rv)) { |
| 497 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 498 | acpi_name(hdl), "GHKS" , AcpiFormatException(rv)); |
| 499 | return EIO; |
| 500 | } |
| 501 | |
| 502 | *valuep = (uint32_t)val; |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static int |
| 508 | fujitsu_bp_init_brightness(struct fujitsu_bp_softc *sc, uint8_t *valuep) |
| 509 | { |
| 510 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 511 | ACPI_INTEGER val; |
| 512 | ACPI_STATUS rv; |
| 513 | |
| 514 | if (!(sc->sc_caps & FUJITSU_BP_CAP_RBLL)) |
| 515 | return ENODEV; |
| 516 | |
| 517 | rv = acpi_eval_integer(hdl, "RBLL" , &val); |
| 518 | if (ACPI_FAILURE(rv)) { |
| 519 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 520 | acpi_name(hdl), "RBLL" , AcpiFormatException(rv)); |
| 521 | return EIO; |
| 522 | } |
| 523 | |
| 524 | if (val > UINT8_MAX) |
| 525 | return ERANGE; |
| 526 | |
| 527 | *valuep = (uint8_t)val; |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static int |
| 533 | fujitsu_bp_get_brightness(struct fujitsu_bp_softc *sc, uint8_t *valuep) |
| 534 | { |
| 535 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 536 | ACPI_INTEGER val; |
| 537 | ACPI_STATUS rv; |
| 538 | |
| 539 | if (!(sc->sc_caps & FUJITSU_BP_CAP_GBLL)) |
| 540 | return ENODEV; |
| 541 | |
| 542 | rv = acpi_eval_integer(hdl, "GBLL" , &val); |
| 543 | if (ACPI_FAILURE(rv)) { |
| 544 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 545 | acpi_name(hdl), "GBLL" , AcpiFormatException(rv)); |
| 546 | return EIO; |
| 547 | } |
| 548 | |
| 549 | /* Clear modification bits. */ |
| 550 | val &= ~FUJITSU_BP_MODMASK; |
| 551 | |
| 552 | if (val > UINT8_MAX) |
| 553 | return ERANGE; |
| 554 | |
| 555 | *valuep = (uint8_t)val; |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | static int |
| 561 | fujitsu_bp_set_brightness(struct fujitsu_bp_softc *sc, uint8_t val) |
| 562 | { |
| 563 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 564 | ACPI_STATUS rv; |
| 565 | |
| 566 | if (!(sc->sc_caps & FUJITSU_BP_CAP_SBLL)) |
| 567 | return ENODEV; |
| 568 | |
| 569 | rv = acpi_eval_set_integer(hdl, "SBLL" , val); |
| 570 | |
| 571 | if (ACPI_FAILURE(rv)) { |
| 572 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 573 | acpi_name(hdl), "SBLL" , AcpiFormatException(rv)); |
| 574 | return EIO; |
| 575 | } |
| 576 | |
| 577 | return 0; |
| 578 | } |
| 579 | |
| 580 | static int |
| 581 | fujitsu_bp_get_pointer(struct fujitsu_bp_softc *sc, bool *valuep) |
| 582 | { |
| 583 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 584 | ACPI_INTEGER val; |
| 585 | ACPI_STATUS rv; |
| 586 | |
| 587 | if (!(sc->sc_caps & FUJITSU_BP_CAP_GMOU)) |
| 588 | return ENODEV; |
| 589 | |
| 590 | rv = acpi_eval_integer(hdl, "GMOU" , &val); |
| 591 | if (ACPI_FAILURE(rv)) { |
| 592 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 593 | acpi_name(hdl), "GMOU" , AcpiFormatException(rv)); |
| 594 | return EIO; |
| 595 | } |
| 596 | |
| 597 | /* Clear modification bits. */ |
| 598 | val &= ~FUJITSU_BP_MODMASK; |
| 599 | |
| 600 | if (val > 1) |
| 601 | return ERANGE; |
| 602 | |
| 603 | *valuep = (bool)val; |
| 604 | |
| 605 | return 0; |
| 606 | } |
| 607 | |
| 608 | static int |
| 609 | fujitsu_bp_set_pointer(struct fujitsu_bp_softc *sc, bool val) |
| 610 | { |
| 611 | ACPI_HANDLE hdl = sc->sc_node->ad_handle; |
| 612 | ACPI_STATUS rv; |
| 613 | |
| 614 | if (!(sc->sc_caps & FUJITSU_BP_CAP_SMOU)) |
| 615 | return ENODEV; |
| 616 | |
| 617 | rv = acpi_eval_set_integer(hdl, "SMOU" , val); |
| 618 | |
| 619 | if (ACPI_FAILURE(rv)) { |
| 620 | aprint_error_dev(sc->sc_dev, "failed to evaluate %s.%s: %s\n" , |
| 621 | acpi_name(hdl), "SMOU" , AcpiFormatException(rv)); |
| 622 | return EIO; |
| 623 | } |
| 624 | |
| 625 | return 0; |
| 626 | } |
| 627 | |
| 628 | /* |
| 629 | * fujitusu_bp_cap: |
| 630 | * |
| 631 | * Returns true if and only if (a) the object handle.path exists and |
| 632 | * (b) this object is a method or has the given type. |
| 633 | */ |
| 634 | static bool |
| 635 | fujitsu_bp_cap(ACPI_HANDLE handle, const char *path, ACPI_OBJECT_TYPE type) |
| 636 | { |
| 637 | ACPI_HANDLE hdl; |
| 638 | ACPI_OBJECT_TYPE typ; |
| 639 | |
| 640 | KASSERT(handle != NULL); |
| 641 | |
| 642 | if (ACPI_FAILURE(AcpiGetHandle(handle, path, &hdl))) |
| 643 | return false; |
| 644 | |
| 645 | if (ACPI_FAILURE(AcpiGetType(hdl, &typ))) |
| 646 | return false; |
| 647 | |
| 648 | if (typ != ACPI_TYPE_METHOD && typ != type) |
| 649 | return false; |
| 650 | |
| 651 | return true; |
| 652 | } |
| 653 | |
| 654 | MODULE(MODULE_CLASS_DRIVER, fujbp, NULL); |
| 655 | |
| 656 | #ifdef _MODULE |
| 657 | #include "ioconf.c" |
| 658 | #endif |
| 659 | |
| 660 | static int |
| 661 | fujbp_modcmd(modcmd_t cmd, void *aux) |
| 662 | { |
| 663 | int rv = 0; |
| 664 | |
| 665 | switch (cmd) { |
| 666 | |
| 667 | case MODULE_CMD_INIT: |
| 668 | |
| 669 | #ifdef _MODULE |
| 670 | rv = config_init_component(cfdriver_ioconf_fujbp, |
| 671 | cfattach_ioconf_fujbp, cfdata_ioconf_fujbp); |
| 672 | #endif |
| 673 | break; |
| 674 | |
| 675 | case MODULE_CMD_FINI: |
| 676 | |
| 677 | #ifdef _MODULE |
| 678 | rv = config_fini_component(cfdriver_ioconf_fujbp, |
| 679 | cfattach_ioconf_fujbp, cfdata_ioconf_fujbp); |
| 680 | #endif |
| 681 | break; |
| 682 | |
| 683 | default: |
| 684 | rv = ENOTTY; |
| 685 | } |
| 686 | |
| 687 | return rv; |
| 688 | } |
| 689 | |