sys/dev/acpi_support/acpi_ibm.c

   1 /*-
   2  * Copyright (c) 2004 Takanori Watanabe
   3  * Copyright (c) 2005 Markus Brueffer <markus@FreeBSD.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 /*
  32  * Driver for extra ACPI-controlled gadgets found on IBM ThinkPad laptops.
  33  * Inspired by the ibm-acpi and tpb projects which implement these features
  34  * on Linux.
  35  *
  36  *   acpi-ibm: <http://ibm-acpi.sourceforge.net/>
  37  *        tpb: <http://www.nongnu.org/tpb/>
  38  */
  39
  40 #include "opt_acpi.h"
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/bus.h>
  45 #include <machine/cpufunc.h>
  46
  47 #include <contrib/dev/acpica/include/acpi.h>
  48 #include <contrib/dev/acpica/include/accommon.h>
  49
  50 #include "acpi_if.h"
  51 #include <sys/module.h>
  52 #include <dev/acpica/acpivar.h>
  53 #include <dev/led/led.h>
  54 #include <sys/power.h>
  55 #include <sys/sbuf.h>
  56 #include <sys/sysctl.h>
  57 #include <isa/rtc.h>
  58
  59 #define _COMPONENT      ACPI_OEM
  60 ACPI_MODULE_NAME("IBM")
  61
  62 /* Internal methods */
  63 #define ACPI_IBM_METHOD_EVENTS          1
  64 #define ACPI_IBM_METHOD_EVENTMASK       2
  65 #define ACPI_IBM_METHOD_HOTKEY          3
  66 #define ACPI_IBM_METHOD_BRIGHTNESS      4
  67 #define ACPI_IBM_METHOD_VOLUME          5
  68 #define ACPI_IBM_METHOD_MUTE            6
  69 #define ACPI_IBM_METHOD_THINKLIGHT      7
  70 #define ACPI_IBM_METHOD_BLUETOOTH       8
  71 #define ACPI_IBM_METHOD_WLAN            9
  72 #define ACPI_IBM_METHOD_FANSPEED        10
  73 #define ACPI_IBM_METHOD_FANLEVEL        11
  74 #define ACPI_IBM_METHOD_FANSTATUS       12
  75 #define ACPI_IBM_METHOD_THERMAL         13
  76 #define ACPI_IBM_METHOD_HANDLEREVENTS   14
  77 #define ACPI_IBM_METHOD_MIC_LED         15
  78
  79 /* Hotkeys/Buttons */
  80 #define IBM_RTC_HOTKEY1                 0x64
  81 #define   IBM_RTC_MASK_HOME             (1 << 0)
  82 #define   IBM_RTC_MASK_SEARCH           (1 << 1)
  83 #define   IBM_RTC_MASK_MAIL             (1 << 2)
  84 #define   IBM_RTC_MASK_WLAN             (1 << 5)
  85 #define IBM_RTC_HOTKEY2                 0x65
  86 #define   IBM_RTC_MASK_THINKPAD         (1 << 3)
  87 #define   IBM_RTC_MASK_ZOOM             (1 << 5)
  88 #define   IBM_RTC_MASK_VIDEO            (1 << 6)
  89 #define   IBM_RTC_MASK_HIBERNATE        (1 << 7)
  90 #define IBM_RTC_THINKLIGHT              0x66
  91 #define   IBM_RTC_MASK_THINKLIGHT       (1 << 4)
  92 #define IBM_RTC_SCREENEXPAND            0x67
  93 #define   IBM_RTC_MASK_SCREENEXPAND     (1 << 5)
  94 #define IBM_RTC_BRIGHTNESS              0x6c
  95 #define   IBM_RTC_MASK_BRIGHTNESS       (1 << 5)
  96 #define IBM_RTC_VOLUME                  0x6e
  97 #define   IBM_RTC_MASK_VOLUME           (1 << 7)
  98
  99 /* Embedded Controller registers */
 100 #define IBM_EC_BRIGHTNESS               0x31
 101 #define   IBM_EC_MASK_BRI               0x7
 102 #define IBM_EC_VOLUME                   0x30
 103 #define   IBM_EC_MASK_VOL               0xf
 104 #define   IBM_EC_MASK_MUTE              (1 << 6)
 105 #define IBM_EC_FANSTATUS                0x2F
 106 #define   IBM_EC_MASK_FANLEVEL          0x3f
 107 #define   IBM_EC_MASK_FANDISENGAGED     (1 << 6)
 108 #define   IBM_EC_MASK_FANSTATUS         (1 << 7)
 109 #define IBM_EC_FANSPEED                 0x84
 110
 111 /* CMOS Commands */
 112 #define IBM_CMOS_VOLUME_DOWN            0
 113 #define IBM_CMOS_VOLUME_UP              1
 114 #define IBM_CMOS_VOLUME_MUTE            2
 115 #define IBM_CMOS_BRIGHTNESS_UP          4
 116 #define IBM_CMOS_BRIGHTNESS_DOWN        5
 117
 118 /* ACPI methods */
 119 #define IBM_NAME_KEYLIGHT               "KBLT"
 120 #define IBM_NAME_WLAN_BT_GET            "GBDC"
 121 #define IBM_NAME_WLAN_BT_SET            "SBDC"
 122 #define   IBM_NAME_MASK_BT              (1 << 1)
 123 #define   IBM_NAME_MASK_WLAN            (1 << 2)
 124 #define IBM_NAME_THERMAL_GET            "TMP7"
 125 #define IBM_NAME_THERMAL_UPDT           "UPDT"
 126
 127 #define IBM_NAME_EVENTS_STATUS_GET      "DHKC"
 128 #define IBM_NAME_EVENTS_MASK_GET        "DHKN"
 129 #define IBM_NAME_EVENTS_STATUS_SET      "MHKC"
 130 #define IBM_NAME_EVENTS_MASK_SET        "MHKM"
 131 #define IBM_NAME_EVENTS_GET             "MHKP"
 132 #define IBM_NAME_EVENTS_AVAILMASK       "MHKA"
 133
 134 /* Event Code */
 135 #define IBM_EVENT_LCD_BACKLIGHT         0x03
 136 #define IBM_EVENT_SUSPEND_TO_RAM        0x04
 137 #define IBM_EVENT_BLUETOOTH             0x05
 138 #define IBM_EVENT_SCREEN_EXPAND         0x07
 139 #define IBM_EVENT_SUSPEND_TO_DISK       0x0c
 140 #define IBM_EVENT_BRIGHTNESS_UP         0x10
 141 #define IBM_EVENT_BRIGHTNESS_DOWN       0x11
 142 #define IBM_EVENT_THINKLIGHT            0x12
 143 #define IBM_EVENT_ZOOM                  0x14
 144 #define IBM_EVENT_VOLUME_UP             0x15
 145 #define IBM_EVENT_VOLUME_DOWN           0x16
 146 #define IBM_EVENT_MUTE                  0x17
 147 #define IBM_EVENT_ACCESS_IBM_BUTTON     0x18
 148
 149 #define ABS(x) (((x) < 0)? -(x) : (x))
 150
 151 struct acpi_ibm_softc {
 152         device_t        dev;
 153         ACPI_HANDLE     handle;
 154
 155         /* Embedded controller */
 156         device_t        ec_dev;
 157         ACPI_HANDLE     ec_handle;
 158
 159         /* CMOS */
 160         ACPI_HANDLE     cmos_handle;
 161
 162         /* Fan status */
 163         ACPI_HANDLE     fan_handle;
 164         int             fan_levels;
 165
 166         /* Keylight commands and states */
 167         ACPI_HANDLE     light_handle;
 168         int             light_cmd_on;
 169         int             light_cmd_off;
 170         int             light_val;
 171         int             light_get_supported;
 172         int             light_set_supported;
 173
 174         /* led(4) interface */
 175         struct cdev     *led_dev;
 176         int             led_busy;
 177         int             led_state;
 178
 179         /* Mic led handle */
 180         ACPI_HANDLE     mic_led_handle;
 181         int             mic_led_state;
 182
 183         int             wlan_bt_flags;
 184         int             thermal_updt_supported;
 185
 186         unsigned int    events_availmask;
 187         unsigned int    events_initialmask;
 188         int             events_mask_supported;
 189         int             events_enable;
 190
 191         unsigned int    handler_events;
 192
 193         struct sysctl_ctx_list  *sysctl_ctx;
 194         struct sysctl_oid       *sysctl_tree;
 195 };
 196
 197 static struct {
 198         char    *name;
 199         int     method;
 200         char    *description;
 201         int     flag_rdonly;
 202 } acpi_ibm_sysctls[] = {
 203         {
 204                 .name           = "events",
 205                 .method         = ACPI_IBM_METHOD_EVENTS,
 206                 .description    = "ACPI events enable",
 207         },
 208         {
 209                 .name           = "eventmask",
 210                 .method         = ACPI_IBM_METHOD_EVENTMASK,
 211                 .description    = "ACPI eventmask",
 212         },
 213         {
 214                 .name           = "hotkey",
 215                 .method         = ACPI_IBM_METHOD_HOTKEY,
 216                 .description    = "Key Status",
 217                 .flag_rdonly    = 1
 218         },
 219         {
 220                 .name           = "lcd_brightness",
 221                 .method         = ACPI_IBM_METHOD_BRIGHTNESS,
 222                 .description    = "LCD Brightness",
 223         },
 224         {
 225                 .name           = "volume",
 226                 .method         = ACPI_IBM_METHOD_VOLUME,
 227                 .description    = "Volume",
 228         },
 229         {
 230                 .name           = "mute",
 231                 .method         = ACPI_IBM_METHOD_MUTE,
 232                 .description    = "Mute",
 233         },
 234         {
 235                 .name           = "thinklight",
 236                 .method         = ACPI_IBM_METHOD_THINKLIGHT,
 237                 .description    = "Thinklight enable",
 238         },
 239         {
 240                 .name           = "bluetooth",
 241                 .method         = ACPI_IBM_METHOD_BLUETOOTH,
 242                 .description    = "Bluetooth enable",
 243         },
 244         {
 245                 .name           = "wlan",
 246                 .method         = ACPI_IBM_METHOD_WLAN,
 247                 .description    = "WLAN enable",
 248                 .flag_rdonly    = 1
 249         },
 250         {
 251                 .name           = "fan_speed",
 252                 .method         = ACPI_IBM_METHOD_FANSPEED,
 253                 .description    = "Fan speed",
 254                 .flag_rdonly    = 1
 255         },
 256         {
 257                 .name           = "fan_level",
 258                 .method         = ACPI_IBM_METHOD_FANLEVEL,
 259                 .description    = "Fan level",
 260         },
 261         {
 262                 .name           = "fan",
 263                 .method         = ACPI_IBM_METHOD_FANSTATUS,
 264                 .description    = "Fan enable",
 265         },
 266         {
 267                 .name           = "mic_led",
 268                 .method         = ACPI_IBM_METHOD_MIC_LED,
 269                 .description    = "Mic led",
 270         },
 271         { NULL, 0, NULL, 0 }
 272 };
 273
 274 /*
 275  * Per-model default list of event mask.
 276  */
 277 #define ACPI_IBM_HKEY_RFKILL_MASK               (1 << 4)
 278 #define ACPI_IBM_HKEY_DSWITCH_MASK              (1 << 6)
 279 #define ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK        (1 << 15)
 280 #define ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK      (1 << 16)
 281 #define ACPI_IBM_HKEY_SEARCH_MASK               (1 << 18)
 282 #define ACPI_IBM_HKEY_MICMUTE_MASK              (1 << 26)
 283 #define ACPI_IBM_HKEY_SETTINGS_MASK             (1 << 28)
 284 #define ACPI_IBM_HKEY_VIEWOPEN_MASK             (1 << 30)
 285 #define ACPI_IBM_HKEY_VIEWALL_MASK              (1 << 31)
 286
 287 struct acpi_ibm_models {
 288         const char *maker;
 289         const char *product;
 290         uint32_t eventmask;
 291 } acpi_ibm_models[] = {
 292         { "LENOVO", "20BSCTO1WW",
 293           ACPI_IBM_HKEY_RFKILL_MASK |
 294           ACPI_IBM_HKEY_DSWITCH_MASK |
 295           ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK |
 296           ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK |
 297           ACPI_IBM_HKEY_SEARCH_MASK |
 298           ACPI_IBM_HKEY_MICMUTE_MASK |
 299           ACPI_IBM_HKEY_SETTINGS_MASK |
 300           ACPI_IBM_HKEY_VIEWOPEN_MASK |
 301           ACPI_IBM_HKEY_VIEWALL_MASK
 302         }
 303 };
 304
 305 ACPI_SERIAL_DECL(ibm, "ACPI IBM extras");
 306
 307 static int      acpi_ibm_probe(device_t dev);
 308 static int      acpi_ibm_attach(device_t dev);
 309 static int      acpi_ibm_detach(device_t dev);
 310 static int      acpi_ibm_resume(device_t dev);
 311
 312 static void     ibm_led(void *softc, int onoff);
 313 static void     ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
 314
 315 static int      acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS);
 316 static int      acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method);
 317 static int      acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method);
 318 static int      acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int val);
 319
 320 static int      acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val);
 321 static int      acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS);
 322 static int      acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS);
 323 static void     acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context);
 324
 325 static int      acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg);
 326 static int      acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg);
 327 static int      acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg);
 328 static int      acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg);
 329 static int      acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg);
 330
 331 static device_method_t acpi_ibm_methods[] = {
 332         /* Device interface */
 333         DEVMETHOD(device_probe, acpi_ibm_probe),
 334         DEVMETHOD(device_attach, acpi_ibm_attach),
 335         DEVMETHOD(device_detach, acpi_ibm_detach),
 336         DEVMETHOD(device_resume, acpi_ibm_resume),
 337
 338         DEVMETHOD_END
 339 };
 340
 341 static driver_t acpi_ibm_driver = {
 342         "acpi_ibm",
 343         acpi_ibm_methods,
 344         sizeof(struct acpi_ibm_softc),
 345 };
 346
 347 static devclass_t acpi_ibm_devclass;
 348
 349 DRIVER_MODULE(acpi_ibm, acpi, acpi_ibm_driver, acpi_ibm_devclass,
 350               0, 0);
 351 MODULE_DEPEND(acpi_ibm, acpi, 1, 1, 1);
 352 static char    *ibm_ids[] = {"IBM0068", "LEN0068", NULL};
 353
 354 static void
 355 ibm_led(void *softc, int onoff)
 356 {
 357         struct acpi_ibm_softc* sc = (struct acpi_ibm_softc*) softc;
 358
 359         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 360
 361         if (sc->led_busy)
 362                 return;
 363
 364         sc->led_busy = 1;
 365         sc->led_state = onoff;
 366
 367         AcpiOsExecute(OSL_NOTIFY_HANDLER, (void *)ibm_led_task, sc);
 368 }
 369
 370 static void
 371 ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused)
 372 {
 373         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 374
 375         ACPI_SERIAL_BEGIN(ibm);
 376         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_THINKLIGHT, sc->led_state);
 377         ACPI_SERIAL_END(ibm);
 378
 379         sc->led_busy = 0;
 380 }
 381
 382 static int
 383 acpi_ibm_mic_led_set (struct acpi_ibm_softc *sc, int arg)
 384 {
 385         ACPI_OBJECT_LIST input;
 386         ACPI_OBJECT params[1];
 387         ACPI_STATUS status;
 388
 389         if (arg < 0 || arg > 1)
 390                 return (EINVAL);
 391
 392         if (sc->mic_led_handle) {
 393                 params[0].Type = ACPI_TYPE_INTEGER;
 394                 params[0].Integer.Value = 0;
 395                 /* mic led: 0 off, 2 on */
 396                 if (arg == 1)
 397                         params[0].Integer.Value = 2;
 398
 399                 input.Pointer = params;
 400                 input.Count = 1;
 401
 402                 status = AcpiEvaluateObject (sc->handle, "MMTS", &input, NULL);
 403                 if (ACPI_SUCCESS(status))
 404                         sc->mic_led_state = arg;
 405                 return(status);
 406         }
 407
 408         return (0);
 409 }
 410
 411 static int
 412 acpi_ibm_probe(device_t dev)
 413 {
 414         if (acpi_disabled("ibm") ||
 415             ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids) == NULL ||
 416             device_get_unit(dev) != 0)
 417                 return (ENXIO);
 418
 419         device_set_desc(dev, "IBM ThinkPad ACPI Extras");
 420
 421         return (0);
 422 }
 423
 424 static int
 425 acpi_ibm_attach(device_t dev)
 426 {
 427         int i;
 428         struct acpi_ibm_softc   *sc;
 429         char *maker, *product;
 430         devclass_t              ec_devclass;
 431
 432         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 433
 434         sc = device_get_softc(dev);
 435         sc->dev = dev;
 436         sc->handle = acpi_get_handle(dev);
 437
 438         /* Look for the first embedded controller */
 439         if (!(ec_devclass = devclass_find ("acpi_ec"))) {
 440                 if (bootverbose)
 441                         device_printf(dev, "Couldn't find acpi_ec devclass\n");
 442                 return (EINVAL);
 443         }
 444         if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
 445                 if (bootverbose)
 446                         device_printf(dev, "Couldn't find acpi_ec device\n");
 447                 return (EINVAL);
 448         }
 449         sc->ec_handle = acpi_get_handle(sc->ec_dev);
 450
 451         /* Get the sysctl tree */
 452         sc->sysctl_ctx = device_get_sysctl_ctx(dev);
 453         sc->sysctl_tree = device_get_sysctl_tree(dev);
 454
 455         /* Look for event mask and hook up the nodes */
 456         sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
 457             IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
 458
 459         if (sc->events_mask_supported) {
 460                 SYSCTL_ADD_UINT(sc->sysctl_ctx,
 461                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 462                     "initialmask", CTLFLAG_RD,
 463                     &sc->events_initialmask, 0, "Initial eventmask");
 464
 465                 /* The availmask is the bitmask of supported events */
 466                 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
 467                     IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
 468                         sc->events_availmask = 0xffffffff;
 469
 470                 SYSCTL_ADD_UINT(sc->sysctl_ctx,
 471                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 472                     "availmask", CTLFLAG_RD,
 473                     &sc->events_availmask, 0, "Mask of supported events");
 474         }
 475
 476         /* Hook up proc nodes */
 477         for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
 478                 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
 479                         continue;
 480
 481                 if (acpi_ibm_sysctls[i].flag_rdonly != 0) {
 482                         SYSCTL_ADD_PROC(sc->sysctl_ctx,
 483                             SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 484                             acpi_ibm_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RD,
 485                             sc, i, acpi_ibm_sysctl, "I",
 486                             acpi_ibm_sysctls[i].description);
 487                 } else {
 488                         SYSCTL_ADD_PROC(sc->sysctl_ctx,
 489                             SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 490                             acpi_ibm_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RW,
 491                             sc, i, acpi_ibm_sysctl, "I",
 492                             acpi_ibm_sysctls[i].description);
 493                 }
 494         }
 495
 496         /* Hook up thermal node */
 497         if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
 498                 SYSCTL_ADD_PROC(sc->sysctl_ctx,
 499                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 500                     "thermal", CTLTYPE_INT | CTLFLAG_RD,
 501                     sc, 0, acpi_ibm_thermal_sysctl, "I",
 502                     "Thermal zones");
 503         }
 504
 505         /* Hook up handlerevents node */
 506         if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_HANDLEREVENTS)) {
 507                 SYSCTL_ADD_PROC(sc->sysctl_ctx,
 508                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 509                     "handlerevents", CTLTYPE_STRING | CTLFLAG_RW,
 510                     sc, 0, acpi_ibm_handlerevents_sysctl, "I",
 511                     "devd(8) events handled by acpi_ibm");
 512         }
 513
 514         /* Handle notifies */
 515         AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
 516             acpi_ibm_notify, dev);
 517
 518         /* Hook up light to led(4) */
 519         if (sc->light_set_supported)
 520                 sc->led_dev = led_create_state(ibm_led, sc, "thinklight",
 521                     (sc->light_val ? 1 : 0));
 522
 523         /* Enable per-model events. */
 524         maker = kern_getenv("smbios.system.maker");
 525         product = kern_getenv("smbios.system.product");
 526         if (maker == NULL || product == NULL)
 527                 goto nosmbios;
 528
 529         for (i = 0; i < nitems(acpi_ibm_models); i++) {
 530                 if (strcmp(maker, acpi_ibm_models[i].maker) == 0 &&
 531                     strcmp(product, acpi_ibm_models[i].product) == 0) {
 532                         ACPI_SERIAL_BEGIN(ibm);
 533                         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK,
 534                             acpi_ibm_models[i].eventmask);
 535                         ACPI_SERIAL_END(ibm);
 536                 }
 537         }
 538
 539 nosmbios:
 540         freeenv(maker);
 541         freeenv(product);
 542
 543         /* Enable events by default. */
 544         ACPI_SERIAL_BEGIN(ibm);
 545         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
 546         ACPI_SERIAL_END(ibm);
 547
 548
 549         return (0);
 550 }
 551
 552 static int
 553 acpi_ibm_detach(device_t dev)
 554 {
 555         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 556
 557         struct acpi_ibm_softc *sc = device_get_softc(dev);
 558
 559         /* Disable events and restore eventmask */
 560         ACPI_SERIAL_BEGIN(ibm);
 561         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
 562         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
 563         ACPI_SERIAL_END(ibm);
 564
 565         AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
 566
 567         if (sc->led_dev != NULL)
 568                 led_destroy(sc->led_dev);
 569
 570         return (0);
 571 }
 572
 573 static int
 574 acpi_ibm_resume(device_t dev)
 575 {
 576         struct acpi_ibm_softc *sc = device_get_softc(dev);
 577
 578         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 579
 580         ACPI_SERIAL_BEGIN(ibm);
 581         for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
 582                 int val;
 583
 584                 val = acpi_ibm_sysctl_get(sc, i);
 585
 586                 if (acpi_ibm_sysctls[i].flag_rdonly != 0)
 587                         continue;
 588
 589                 acpi_ibm_sysctl_set(sc, i, val);
 590         }
 591         ACPI_SERIAL_END(ibm);
 592
 593         /* The mic led does not turn back on when sysctl_set is called in the above loop */
 594         acpi_ibm_mic_led_set(sc, sc->mic_led_state);
 595
 596         return (0);
 597 }
 598
 599 static int
 600 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
 601 {
 602         ACPI_OBJECT             arg[2];
 603         ACPI_OBJECT_LIST        args;
 604         ACPI_STATUS             status;
 605
 606         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 607         ACPI_SERIAL_ASSERT(ibm);
 608
 609         args.Count = 2;
 610         args.Pointer = arg;
 611         arg[0].Type = ACPI_TYPE_INTEGER;
 612         arg[1].Type = ACPI_TYPE_INTEGER;
 613
 614         for (int i = 0; i < 32; ++i) {
 615                 arg[0].Integer.Value = i+1;
 616                 arg[1].Integer.Value = (((1 << i) & val) != 0);
 617                 status = AcpiEvaluateObject(sc->handle,
 618                     IBM_NAME_EVENTS_MASK_SET, &args, NULL);
 619
 620                 if (ACPI_FAILURE(status))
 621                         return (status);
 622         }
 623
 624         return (0);
 625 }
 626
 627 static int
 628 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
 629 {
 630         struct acpi_ibm_softc   *sc;
 631         int                     arg;
 632         int                     error = 0;
 633         int                     function;
 634         int                     method;
 635
 636         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 637
 638         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
 639         function = oidp->oid_arg2;
 640         method = acpi_ibm_sysctls[function].method;
 641
 642         ACPI_SERIAL_BEGIN(ibm);
 643         arg = acpi_ibm_sysctl_get(sc, method);
 644         error = sysctl_handle_int(oidp, &arg, 0, req);
 645
 646         /* Sanity check */
 647         if (error != 0 || req->newptr == NULL)
 648                 goto out;
 649
 650         /* Update */
 651         error = acpi_ibm_sysctl_set(sc, method, arg);
 652
 653 out:
 654         ACPI_SERIAL_END(ibm);
 655         return (error);
 656 }
 657
 658 static int
 659 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
 660 {
 661         UINT64          val_ec;
 662         int             val = 0, key;
 663
 664         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 665         ACPI_SERIAL_ASSERT(ibm);
 666
 667         switch (method) {
 668         case ACPI_IBM_METHOD_EVENTS:
 669                 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
 670                 break;
 671
 672         case ACPI_IBM_METHOD_EVENTMASK:
 673                 if (sc->events_mask_supported)
 674                         acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
 675                 break;
 676
 677         case ACPI_IBM_METHOD_HOTKEY:
 678                 /*
 679                  * Construct the hotkey as a bitmask as illustrated below.
 680                  * Note that whenever a key was pressed, the respecting bit
 681                  * toggles and nothing else changes.
 682                  * +--+--+-+-+-+-+-+-+-+-+-+-+
 683                  * |11|10|9|8|7|6|5|4|3|2|1|0|
 684                  * +--+--+-+-+-+-+-+-+-+-+-+-+
 685                  *   |  | | | | | | | | | | |
 686                  *   |  | | | | | | | | | | +- Home Button
 687                  *   |  | | | | | | | | | +--- Search Button
 688                  *   |  | | | | | | | | +----- Mail Button
 689                  *   |  | | | | | | | +------- Thinkpad Button
 690                  *   |  | | | | | | +--------- Zoom (Fn + Space)
 691                  *   |  | | | | | +----------- WLAN Button
 692                  *   |  | | | | +------------- Video Button
 693                  *   |  | | | +--------------- Hibernate Button
 694                  *   |  | | +----------------- Thinklight Button
 695                  *   |  | +------------------- Screen expand (Fn + F8)
 696                  *   |  +--------------------- Brightness
 697                  *   +------------------------ Volume/Mute
 698                  */
 699                 key = rtcin(IBM_RTC_HOTKEY1);
 700                 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
 701                 key = rtcin(IBM_RTC_HOTKEY2);
 702                 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
 703                 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
 704                 key = rtcin(IBM_RTC_THINKLIGHT);
 705                 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
 706                 key = rtcin(IBM_RTC_SCREENEXPAND);
 707                 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
 708                 key = rtcin(IBM_RTC_BRIGHTNESS);
 709                 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
 710                 key = rtcin(IBM_RTC_VOLUME);
 711                 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
 712                 break;
 713
 714         case ACPI_IBM_METHOD_BRIGHTNESS:
 715                 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
 716                 val = val_ec & IBM_EC_MASK_BRI;
 717                 break;
 718
 719         case ACPI_IBM_METHOD_VOLUME:
 720                 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
 721                 val = val_ec & IBM_EC_MASK_VOL;
 722                 break;
 723
 724         case ACPI_IBM_METHOD_MUTE:
 725                 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
 726                 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
 727                 break;
 728
 729         case ACPI_IBM_METHOD_THINKLIGHT:
 730                 if (sc->light_get_supported)
 731                         acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
 732                 else
 733                         val = sc->light_val;
 734                 break;
 735
 736         case ACPI_IBM_METHOD_BLUETOOTH:
 737                 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
 738                 sc->wlan_bt_flags = val;
 739                 val = ((val & IBM_NAME_MASK_BT) != 0);
 740                 break;
 741
 742         case ACPI_IBM_METHOD_WLAN:
 743                 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
 744                 sc->wlan_bt_flags = val;
 745                 val = ((val & IBM_NAME_MASK_WLAN) != 0);
 746                 break;
 747
 748         case ACPI_IBM_METHOD_FANSPEED:
 749                 if (sc->fan_handle) {
 750                         if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
 751                                 val = -1;
 752                 }
 753                 else {
 754                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
 755                         val = val_ec;
 756                 }
 757                 break;
 758
 759         case ACPI_IBM_METHOD_FANLEVEL:
 760                 /*
 761                  * The IBM_EC_FANSTATUS register works as follows:
 762                  * Bit 0-5 indicate the level at which the fan operates. Only
 763                  *       values between 0 and 7 have an effect. Everything
 764                  *       above 7 is treated the same as level 7
 765                  * Bit 6 overrides the fan speed limit if set to 1
 766                  * Bit 7 indicates at which mode the fan operates:
 767                  *       manual (0) or automatic (1)
 768                  */
 769                 if (!sc->fan_handle) {
 770                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 771                         val = val_ec & IBM_EC_MASK_FANLEVEL;
 772                 }
 773                 break;
 774
 775         case ACPI_IBM_METHOD_FANSTATUS:
 776                 if (!sc->fan_handle) {
 777                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 778                         val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
 779                 }
 780                 else
 781                         val = -1;
 782                 break;
 783         case ACPI_IBM_METHOD_MIC_LED:
 784                 if (sc->mic_led_handle)
 785                         return sc->mic_led_state;
 786                 else
 787                         val = -1;
 788                 break;
 789         }
 790
 791         return (val);
 792 }
 793
 794 static int
 795 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
 796 {
 797         int                     val;
 798         UINT64                  val_ec;
 799         ACPI_STATUS             status;
 800
 801         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 802         ACPI_SERIAL_ASSERT(ibm);
 803
 804         switch (method) {
 805         case ACPI_IBM_METHOD_EVENTS:
 806                 if (arg < 0 || arg > 1)
 807                         return (EINVAL);
 808
 809                 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
 810                 if (ACPI_FAILURE(status))
 811                         return (status);
 812                 if (sc->events_mask_supported)
 813                         return acpi_ibm_eventmask_set(sc, sc->events_availmask);
 814                 break;
 815
 816         case ACPI_IBM_METHOD_EVENTMASK:
 817                 if (sc->events_mask_supported)
 818                         return acpi_ibm_eventmask_set(sc, arg);
 819                 break;
 820
 821         case ACPI_IBM_METHOD_BRIGHTNESS:
 822                 return acpi_ibm_brightness_set(sc, arg);
 823                 break;
 824
 825         case ACPI_IBM_METHOD_VOLUME:
 826                 return acpi_ibm_volume_set(sc, arg);
 827                 break;
 828
 829         case ACPI_IBM_METHOD_MUTE:
 830                 return acpi_ibm_mute_set(sc, arg);
 831                 break;
 832
 833         case ACPI_IBM_METHOD_MIC_LED:
 834                 return acpi_ibm_mic_led_set (sc, arg);
 835                 break;
 836
 837         case ACPI_IBM_METHOD_THINKLIGHT:
 838                 return acpi_ibm_thinklight_set(sc, arg);
 839                 break;
 840
 841         case ACPI_IBM_METHOD_BLUETOOTH:
 842                 return acpi_ibm_bluetooth_set(sc, arg);
 843                 break;
 844
 845         case ACPI_IBM_METHOD_FANLEVEL:
 846                 if (arg < 0 || arg > 7)
 847                         return (EINVAL);
 848
 849                 if (!sc->fan_handle) {
 850                         /* Read the current fanstatus */
 851                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 852                         val = val_ec & (~IBM_EC_MASK_FANLEVEL);
 853
 854                         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val | arg, 1);
 855                 }
 856                 break;
 857
 858         case ACPI_IBM_METHOD_FANSTATUS:
 859                 if (arg < 0 || arg > 1)
 860                         return (EINVAL);
 861
 862                 if (!sc->fan_handle) {
 863                         /* Read the current fanstatus */
 864                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 865
 866                         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
 867                                 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
 868                 }
 869                 break;
 870         }
 871
 872         return (0);
 873 }
 874
 875 static int
 876 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
 877 {
 878         int                     dummy;
 879         ACPI_OBJECT_TYPE        cmos_t;
 880         ACPI_HANDLE             ledb_handle;
 881
 882         switch (method) {
 883         case ACPI_IBM_METHOD_EVENTS:
 884                 return (TRUE);
 885
 886         case ACPI_IBM_METHOD_EVENTMASK:
 887                 return (sc->events_mask_supported);
 888
 889         case ACPI_IBM_METHOD_HOTKEY:
 890         case ACPI_IBM_METHOD_BRIGHTNESS:
 891         case ACPI_IBM_METHOD_VOLUME:
 892         case ACPI_IBM_METHOD_MUTE:
 893                 /* EC is required here, which was already checked before */
 894                 return (TRUE);
 895
 896         case ACPI_IBM_METHOD_MIC_LED:
 897                 if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))
 898                 {
 899                         /* Turn off mic led by default */
 900                         acpi_ibm_mic_led_set (sc, 0);
 901                         return(TRUE);
 902                 }
 903                 else
 904                         sc->mic_led_handle = NULL;
 905                 return (FALSE);
 906
 907         case ACPI_IBM_METHOD_THINKLIGHT:
 908                 sc->cmos_handle = NULL;
 909                 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
 910                     sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
 911
 912                 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
 913                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
 914                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
 915                      ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
 916                      cmos_t == ACPI_TYPE_METHOD) {
 917                         sc->light_cmd_on = 0x0c;
 918                         sc->light_cmd_off = 0x0d;
 919                         sc->cmos_handle = sc->light_handle;
 920                 }
 921                 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
 922                         sc->light_cmd_on = 1;
 923                         sc->light_cmd_off = 0;
 924                 }
 925                 else
 926                         sc->light_handle = NULL;
 927
 928                 sc->light_set_supported = (sc->light_handle &&
 929                     ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
 930
 931                 if (sc->light_get_supported)
 932                         return (TRUE);
 933
 934                 if (sc->light_set_supported) {
 935                         sc->light_val = 0;
 936                         return (TRUE);
 937                 }
 938
 939                 return (FALSE);
 940
 941         case ACPI_IBM_METHOD_BLUETOOTH:
 942         case ACPI_IBM_METHOD_WLAN:
 943                 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
 944                         return (TRUE);
 945                 return (FALSE);
 946
 947         case ACPI_IBM_METHOD_FANSPEED:
 948                 /*
 949                  * Some models report the fan speed in levels from 0-7
 950                  * Newer models report it contiguously
 951                  */
 952                 sc->fan_levels =
 953                     (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
 954                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
 955                 return (TRUE);
 956
 957         case ACPI_IBM_METHOD_FANLEVEL:
 958         case ACPI_IBM_METHOD_FANSTATUS:
 959                 /*
 960                  * Fan status is only supported on those models,
 961                  * which report fan RPM contiguously, not in levels
 962                  */
 963                 if (sc->fan_levels)
 964                         return (FALSE);
 965                 return (TRUE);
 966
 967         case ACPI_IBM_METHOD_THERMAL:
 968                 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
 969                         sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
 970                         return (TRUE);
 971                 }
 972                 return (FALSE);
 973
 974         case ACPI_IBM_METHOD_HANDLEREVENTS:
 975                 return (TRUE);
 976         }
 977         return (FALSE);
 978 }
 979
 980 static int
 981 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
 982 {
 983         struct acpi_ibm_softc   *sc;
 984         int                     error = 0;
 985         char                    temp_cmd[] = "TMP0";
 986         int                     temp[8];
 987
 988         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 989
 990         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
 991
 992         ACPI_SERIAL_BEGIN(ibm);
 993
 994         for (int i = 0; i < 8; ++i) {
 995                 temp_cmd[3] = '0' + i;
 996
 997                 /*
 998                  * The TMPx methods seem to return +/- 128 or 0
 999                  * when the respecting sensor is not available
1000                  */
1001                 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
1002                     &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
1003                         temp[i] = -1;
1004                 else if (sc->thermal_updt_supported)
1005                         /* Temperature is reported in tenth of Kelvin */
1006                         temp[i] = (temp[i] - 2731 + 5) / 10;
1007         }
1008
1009         error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
1010
1011         ACPI_SERIAL_END(ibm);
1012         return (error);
1013 }
1014
1015 static int
1016 acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)
1017 {
1018         struct acpi_ibm_softc   *sc;
1019         int                     error = 0;
1020         struct sbuf             sb;
1021         char                    *cp, *ep;
1022         int                     l, val;
1023         unsigned int            handler_events;
1024         char                    temp[128];
1025
1026         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1027
1028         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1029
1030         if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
1031                 return (ENOMEM);
1032
1033         ACPI_SERIAL_BEGIN(ibm);
1034
1035         /* Get old values if this is a get request. */
1036         if (req->newptr == NULL) {
1037                 for (int i = 0; i < 8 * sizeof(sc->handler_events); i++)
1038                         if (sc->handler_events & (1 << i))
1039                                 sbuf_printf(&sb, "0x%02x ", i + 1);
1040                 if (sbuf_len(&sb) == 0)
1041                         sbuf_printf(&sb, "NONE");
1042         }
1043
1044         sbuf_trim(&sb);
1045         sbuf_finish(&sb);
1046         strlcpy(temp, sbuf_data(&sb), sizeof(temp));
1047         sbuf_delete(&sb);
1048
1049         error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
1050
1051         /* Check for error or no change */
1052         if (error != 0 || req->newptr == NULL)
1053                 goto out;
1054
1055         /* If the user is setting a string, parse it. */
1056         handler_events = 0;
1057         cp = temp;
1058         while (*cp) {
1059                 if (isspace(*cp)) {
1060                         cp++;
1061                         continue;
1062                 }
1063
1064                 ep = cp;
1065
1066                 while (*ep && !isspace(*ep))
1067                         ep++;
1068
1069                 l = ep - cp;
1070                 if (l == 0)
1071                         break;
1072
1073                 if (strncmp(cp, "NONE", 4) == 0) {
1074                         cp = ep;
1075                         continue;
1076                 }
1077
1078                 if (l >= 3 && cp[0] == '0' && (cp[1] == 'X' || cp[1] == 'x'))
1079                         val = strtoul(cp, &ep, 16);
1080                 else
1081                         val = strtoul(cp, &ep, 10);
1082
1083                 if (val == 0 || ep == cp || val >= 8 * sizeof(handler_events)) {
1084                         cp[l] = '\0';
1085                         device_printf(sc->dev, "invalid event code: %s\n", cp);
1086                         error = EINVAL;
1087                         goto out;
1088                 }
1089
1090                 handler_events |= 1 << (val - 1);
1091
1092                 cp = ep;
1093         }
1094
1095         sc->handler_events = handler_events;
1096 out:
1097         ACPI_SERIAL_END(ibm);
1098         return (error);
1099 }
1100
1101 static int
1102 acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg)
1103 {
1104         int                     val, step;
1105         UINT64                  val_ec;
1106         ACPI_OBJECT             Arg;
1107         ACPI_OBJECT_LIST        Args;
1108         ACPI_STATUS             status;
1109
1110         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1111         ACPI_SERIAL_ASSERT(ibm);
1112
1113         if (arg < 0 || arg > 7)
1114                 return (EINVAL);
1115
1116         /* Read the current brightness */
1117         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
1118         if (ACPI_FAILURE(status))
1119                 return (status);
1120
1121         if (sc->cmos_handle) {
1122                 val = val_ec & IBM_EC_MASK_BRI;
1123
1124                 Args.Count = 1;
1125                 Args.Pointer = &Arg;
1126                 Arg.Type = ACPI_TYPE_INTEGER;
1127                 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP :
1128                                                   IBM_CMOS_BRIGHTNESS_DOWN;
1129
1130                 step = (arg > val) ? 1 : -1;
1131                 for (int i = val; i != arg; i += step) {
1132                         status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1133                                                     &Args, NULL);
1134                         if (ACPI_FAILURE(status)) {
1135                                 /* Record the last value */
1136                                 if (i != val) {
1137                                         ACPI_EC_WRITE(sc->ec_dev,
1138                                             IBM_EC_BRIGHTNESS, i - step, 1);
1139                                 }
1140                                 return (status);
1141                         }
1142                 }
1143         }
1144
1145         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
1146 }
1147
1148 static int
1149 acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg)
1150 {
1151         int                     val;
1152
1153         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1154         ACPI_SERIAL_ASSERT(ibm);
1155
1156         if (arg < 0 || arg > 1)
1157                 return (EINVAL);
1158
1159         val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT :
1160                            sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
1161         return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
1162 }
1163
1164 static int
1165 acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg)
1166 {
1167         ACPI_OBJECT             Arg;
1168         ACPI_OBJECT_LIST        Args;
1169         ACPI_STATUS             status;
1170
1171         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1172         ACPI_SERIAL_ASSERT(ibm);
1173
1174         if (arg < 0 || arg > 1)
1175                 return (EINVAL);
1176
1177         if (sc->light_set_supported) {
1178                 Args.Count = 1;
1179                 Args.Pointer = &Arg;
1180                 Arg.Type = ACPI_TYPE_INTEGER;
1181                 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
1182
1183                 status = AcpiEvaluateObject(sc->light_handle, NULL,
1184                                             &Args, NULL);
1185                 if (ACPI_SUCCESS(status))
1186                         sc->light_val = arg;
1187                 return (status);
1188         }
1189
1190         return (0);
1191 }
1192
1193 static int
1194 acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
1195 {
1196         int                     val, step;
1197         UINT64                  val_ec;
1198         ACPI_OBJECT             Arg;
1199         ACPI_OBJECT_LIST        Args;
1200         ACPI_STATUS             status;
1201
1202         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1203         ACPI_SERIAL_ASSERT(ibm);
1204
1205         if (arg < 0 || arg > 14)
1206                 return (EINVAL);
1207
1208         /* Read the current volume */
1209         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1210         if (ACPI_FAILURE(status))
1211                 return (status);
1212
1213         if (sc->cmos_handle) {
1214                 val = val_ec & IBM_EC_MASK_VOL;
1215
1216                 Args.Count = 1;
1217                 Args.Pointer = &Arg;
1218                 Arg.Type = ACPI_TYPE_INTEGER;
1219                 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP :
1220                                                   IBM_CMOS_VOLUME_DOWN;
1221
1222                 step = (arg > val) ? 1 : -1;
1223                 for (int i = val; i != arg; i += step) {
1224                         status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1225                                                     &Args, NULL);
1226                         if (ACPI_FAILURE(status)) {
1227                                 /* Record the last value */
1228                                 if (i != val) {
1229                                         val_ec = i - step +
1230                                                  (val_ec & (~IBM_EC_MASK_VOL));
1231                                         ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME,
1232                                                       val_ec, 1);
1233                                 }
1234                                 return (status);
1235                         }
1236                 }
1237         }
1238
1239         val_ec = arg + (val_ec & (~IBM_EC_MASK_VOL));
1240         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1241 }
1242
1243 static int
1244 acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg)
1245 {
1246         UINT64                  val_ec;
1247         ACPI_OBJECT             Arg;
1248         ACPI_OBJECT_LIST        Args;
1249         ACPI_STATUS             status;
1250
1251         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1252         ACPI_SERIAL_ASSERT(ibm);
1253
1254         if (arg < 0 || arg > 1)
1255                 return (EINVAL);
1256
1257         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1258         if (ACPI_FAILURE(status))
1259                 return (status);
1260
1261         if (sc->cmos_handle) {
1262                 Args.Count = 1;
1263                 Args.Pointer = &Arg;
1264                 Arg.Type = ACPI_TYPE_INTEGER;
1265                 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
1266
1267                 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
1268                 if (ACPI_FAILURE(status))
1269                         return (status);
1270         }
1271
1272         val_ec = (arg == 1) ? val_ec | IBM_EC_MASK_MUTE :
1273                               val_ec & (~IBM_EC_MASK_MUTE);
1274         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1275 }
1276
1277 static void
1278 acpi_ibm_eventhandler(struct acpi_ibm_softc *sc, int arg)
1279 {
1280         int                     val;
1281         UINT64                  val_ec;
1282         ACPI_STATUS             status;
1283
1284         ACPI_SERIAL_BEGIN(ibm);
1285         switch (arg) {
1286         case IBM_EVENT_SUSPEND_TO_RAM:
1287                 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
1288                 break;
1289
1290         case IBM_EVENT_BLUETOOTH:
1291                 acpi_ibm_bluetooth_set(sc, (sc->wlan_bt_flags == 0));
1292                 break;
1293
1294         case IBM_EVENT_BRIGHTNESS_UP:
1295         case IBM_EVENT_BRIGHTNESS_DOWN:
1296                 /* Read the current brightness */
1297                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS,
1298                                       &val_ec, 1);
1299                 if (ACPI_FAILURE(status))
1300                         return;
1301
1302                 val = val_ec & IBM_EC_MASK_BRI;
1303                 val = (arg == IBM_EVENT_BRIGHTNESS_UP) ? val + 1 : val - 1;
1304                 acpi_ibm_brightness_set(sc, val);
1305                 break;
1306
1307         case IBM_EVENT_THINKLIGHT:
1308                 acpi_ibm_thinklight_set(sc, (sc->light_val == 0));
1309                 break;
1310
1311         case IBM_EVENT_VOLUME_UP:
1312         case IBM_EVENT_VOLUME_DOWN:
1313                 /* Read the current volume */
1314                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1315                 if (ACPI_FAILURE(status))
1316                         return;
1317
1318                 val = val_ec & IBM_EC_MASK_VOL;
1319                 val = (arg == IBM_EVENT_VOLUME_UP) ? val + 1 : val - 1;
1320                 acpi_ibm_volume_set(sc, val);
1321                 break;
1322
1323         case IBM_EVENT_MUTE:
1324                 /* Read the current value */
1325                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1326                 if (ACPI_FAILURE(status))
1327                         return;
1328
1329                 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
1330                 acpi_ibm_mute_set(sc, (val == 0));
1331                 break;
1332
1333         default:
1334                 break;
1335         }
1336         ACPI_SERIAL_END(ibm);
1337 }
1338
1339 static void
1340 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
1341 {
1342         int             event, arg, type;
1343         device_t        dev = context;
1344         struct acpi_ibm_softc *sc = device_get_softc(dev);
1345
1346         ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
1347
1348         if (notify != 0x80)
1349                 device_printf(dev, "Unknown notify\n");
1350
1351         for (;;) {
1352                 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
1353                 if (event == 0)
1354                         break;
1355
1356
1357                 type = (event >> 12) & 0xf;
1358                 arg = event & 0xfff;
1359                 switch (type) {
1360                 case 1:
1361                         if (!(sc->events_availmask & (1 << (arg - 1)))) {
1362                                 device_printf(dev, "Unknown key %d\n", arg);
1363                                 break;
1364                         }
1365
1366                         /* Execute event handler */
1367                         if (sc->handler_events & (1 << (arg - 1)))
1368                                 acpi_ibm_eventhandler(sc, (arg & 0xff));
1369
1370                         /* Notify devd(8) */
1371                         acpi_UserNotify("IBM", h, (arg & 0xff));
1372                         break;
1373                 default:
1374                         break;
1375                 }
1376         }
1377 }