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", "LEN0268", 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         int rv;
 415
 416         if (acpi_disabled("ibm") ||
 417             device_get_unit(dev) != 0)
 418                 return (ENXIO);
 419         rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids, NULL);
 420
 421         if (rv <= 0)
 422                 device_set_desc(dev, "IBM ThinkPad ACPI Extras");
 423
 424         return (rv);
 425 }
 426
 427 static int
 428 acpi_ibm_attach(device_t dev)
 429 {
 430         int i;
 431         int hkey;
 432         struct acpi_ibm_softc   *sc;
 433         char *maker, *product;
 434         ACPI_OBJECT_LIST input;
 435         ACPI_OBJECT params[1];
 436         ACPI_OBJECT out_obj;
 437         ACPI_BUFFER result;
 438         devclass_t ec_devclass;
 439
 440         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 441
 442         sc = device_get_softc(dev);
 443         sc->dev = dev;
 444         sc->handle = acpi_get_handle(dev);
 445
 446         /* Look for the first embedded controller */
 447         if (!(ec_devclass = devclass_find ("acpi_ec"))) {
 448                 if (bootverbose)
 449                         device_printf(dev, "Couldn't find acpi_ec devclass\n");
 450                 return (EINVAL);
 451         }
 452         if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
 453                 if (bootverbose)
 454                         device_printf(dev, "Couldn't find acpi_ec device\n");
 455                 return (EINVAL);
 456         }
 457         sc->ec_handle = acpi_get_handle(sc->ec_dev);
 458
 459         /* Get the sysctl tree */
 460         sc->sysctl_ctx = device_get_sysctl_ctx(dev);
 461         sc->sysctl_tree = device_get_sysctl_tree(dev);
 462
 463         /* Look for event mask and hook up the nodes */
 464         sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
 465             IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
 466
 467         if (sc->events_mask_supported) {
 468                 SYSCTL_ADD_UINT(sc->sysctl_ctx,
 469                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 470                     "initialmask", CTLFLAG_RD,
 471                     &sc->events_initialmask, 0, "Initial eventmask");
 472
 473                 if (ACPI_SUCCESS (acpi_GetInteger(sc->handle, "MHKV", &hkey))) {
 474                         device_printf(dev, "Firmware version is 0x%X\n", hkey);
 475                         switch(hkey >> 8)
 476                         {
 477                         case 1:
 478                                 /* The availmask is the bitmask of supported events */
 479                                 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
 480                                     IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
 481                                         sc->events_availmask = 0xffffffff;
 482                                 break;
 483
 484                         case 2:
 485                                 result.Length = sizeof(out_obj);
 486                                 result.Pointer = &out_obj;
 487                                 params[0].Type = ACPI_TYPE_INTEGER;
 488                                 params[0].Integer.Value = 1;
 489                                 input.Pointer = params;
 490                                 input.Count = 1;
 491
 492                                 sc->events_availmask = 0xffffffff;
 493
 494                                 if (ACPI_SUCCESS(AcpiEvaluateObject (sc->handle,
 495                                     IBM_NAME_EVENTS_AVAILMASK, &input, &result)))
 496                                         sc->events_availmask = out_obj.Integer.Value;
 497                                 break;
 498                         default:
 499                                 device_printf(dev, "Unknown firmware version 0x%x\n", hkey);
 500                                 break;
 501                         }
 502                 } else
 503                         sc->events_availmask = 0xffffffff;
 504
 505                 SYSCTL_ADD_UINT(sc->sysctl_ctx,
 506                                 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 507                                 "availmask", CTLFLAG_RD,
 508                                 &sc->events_availmask, 0, "Mask of supported events");
 509         }
 510
 511         /* Hook up proc nodes */
 512         for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
 513                 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
 514                         continue;
 515
 516                 if (acpi_ibm_sysctls[i].flag_rdonly != 0) {
 517                         SYSCTL_ADD_PROC(sc->sysctl_ctx,
 518                             SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 519                             acpi_ibm_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RD,
 520                             sc, i, acpi_ibm_sysctl, "I",
 521                             acpi_ibm_sysctls[i].description);
 522                 } else {
 523                         SYSCTL_ADD_PROC(sc->sysctl_ctx,
 524                             SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 525                             acpi_ibm_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RW,
 526                             sc, i, acpi_ibm_sysctl, "I",
 527                             acpi_ibm_sysctls[i].description);
 528                 }
 529         }
 530
 531         /* Hook up thermal node */
 532         if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
 533                 SYSCTL_ADD_PROC(sc->sysctl_ctx,
 534                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 535                     "thermal", CTLTYPE_INT | CTLFLAG_RD,
 536                     sc, 0, acpi_ibm_thermal_sysctl, "I",
 537                     "Thermal zones");
 538         }
 539
 540         /* Hook up handlerevents node */
 541         if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_HANDLEREVENTS)) {
 542                 SYSCTL_ADD_PROC(sc->sysctl_ctx,
 543                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 544                     "handlerevents", CTLTYPE_STRING | CTLFLAG_RW,
 545                     sc, 0, acpi_ibm_handlerevents_sysctl, "I",
 546                     "devd(8) events handled by acpi_ibm");
 547         }
 548
 549         /* Handle notifies */
 550         AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
 551             acpi_ibm_notify, dev);
 552
 553         /* Hook up light to led(4) */
 554         if (sc->light_set_supported)
 555                 sc->led_dev = led_create_state(ibm_led, sc, "thinklight",
 556                     (sc->light_val ? 1 : 0));
 557
 558         /* Enable per-model events. */
 559         maker = kern_getenv("smbios.system.maker");
 560         product = kern_getenv("smbios.system.product");
 561         if (maker == NULL || product == NULL)
 562                 goto nosmbios;
 563
 564         for (i = 0; i < nitems(acpi_ibm_models); i++) {
 565                 if (strcmp(maker, acpi_ibm_models[i].maker) == 0 &&
 566                     strcmp(product, acpi_ibm_models[i].product) == 0) {
 567                         ACPI_SERIAL_BEGIN(ibm);
 568                         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK,
 569                             acpi_ibm_models[i].eventmask);
 570                         ACPI_SERIAL_END(ibm);
 571                 }
 572         }
 573
 574 nosmbios:
 575         freeenv(maker);
 576         freeenv(product);
 577
 578         /* Enable events by default. */
 579         ACPI_SERIAL_BEGIN(ibm);
 580         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
 581         ACPI_SERIAL_END(ibm);
 582
 583
 584         return (0);
 585 }
 586
 587 static int
 588 acpi_ibm_detach(device_t dev)
 589 {
 590         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 591
 592         struct acpi_ibm_softc *sc = device_get_softc(dev);
 593
 594         /* Disable events and restore eventmask */
 595         ACPI_SERIAL_BEGIN(ibm);
 596         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
 597         acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
 598         ACPI_SERIAL_END(ibm);
 599
 600         AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
 601
 602         if (sc->led_dev != NULL)
 603                 led_destroy(sc->led_dev);
 604
 605         return (0);
 606 }
 607
 608 static int
 609 acpi_ibm_resume(device_t dev)
 610 {
 611         struct acpi_ibm_softc *sc = device_get_softc(dev);
 612
 613         ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
 614
 615         ACPI_SERIAL_BEGIN(ibm);
 616         for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
 617                 int val;
 618
 619                 val = acpi_ibm_sysctl_get(sc, i);
 620
 621                 if (acpi_ibm_sysctls[i].flag_rdonly != 0)
 622                         continue;
 623
 624                 acpi_ibm_sysctl_set(sc, i, val);
 625         }
 626         ACPI_SERIAL_END(ibm);
 627
 628         /* The mic led does not turn back on when sysctl_set is called in the above loop */
 629         acpi_ibm_mic_led_set(sc, sc->mic_led_state);
 630
 631         return (0);
 632 }
 633
 634 static int
 635 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
 636 {
 637         ACPI_OBJECT             arg[2];
 638         ACPI_OBJECT_LIST        args;
 639         ACPI_STATUS             status;
 640
 641         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 642         ACPI_SERIAL_ASSERT(ibm);
 643
 644         args.Count = 2;
 645         args.Pointer = arg;
 646         arg[0].Type = ACPI_TYPE_INTEGER;
 647         arg[1].Type = ACPI_TYPE_INTEGER;
 648
 649         for (int i = 0; i < 32; ++i) {
 650                 arg[0].Integer.Value = i+1;
 651                 arg[1].Integer.Value = (((1 << i) & val) != 0);
 652                 status = AcpiEvaluateObject(sc->handle,
 653                     IBM_NAME_EVENTS_MASK_SET, &args, NULL);
 654
 655                 if (ACPI_FAILURE(status))
 656                         return (status);
 657         }
 658
 659         return (0);
 660 }
 661
 662 static int
 663 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
 664 {
 665         struct acpi_ibm_softc   *sc;
 666         int                     arg;
 667         int                     error = 0;
 668         int                     function;
 669         int                     method;
 670
 671         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 672
 673         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
 674         function = oidp->oid_arg2;
 675         method = acpi_ibm_sysctls[function].method;
 676
 677         ACPI_SERIAL_BEGIN(ibm);
 678         arg = acpi_ibm_sysctl_get(sc, method);
 679         error = sysctl_handle_int(oidp, &arg, 0, req);
 680
 681         /* Sanity check */
 682         if (error != 0 || req->newptr == NULL)
 683                 goto out;
 684
 685         /* Update */
 686         error = acpi_ibm_sysctl_set(sc, method, arg);
 687
 688 out:
 689         ACPI_SERIAL_END(ibm);
 690         return (error);
 691 }
 692
 693 static int
 694 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
 695 {
 696         UINT64          val_ec;
 697         int             val = 0, key;
 698
 699         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 700         ACPI_SERIAL_ASSERT(ibm);
 701
 702         switch (method) {
 703         case ACPI_IBM_METHOD_EVENTS:
 704                 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
 705                 break;
 706
 707         case ACPI_IBM_METHOD_EVENTMASK:
 708                 if (sc->events_mask_supported)
 709                         acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
 710                 break;
 711
 712         case ACPI_IBM_METHOD_HOTKEY:
 713                 /*
 714                  * Construct the hotkey as a bitmask as illustrated below.
 715                  * Note that whenever a key was pressed, the respecting bit
 716                  * toggles and nothing else changes.
 717                  * +--+--+-+-+-+-+-+-+-+-+-+-+
 718                  * |11|10|9|8|7|6|5|4|3|2|1|0|
 719                  * +--+--+-+-+-+-+-+-+-+-+-+-+
 720                  *   |  | | | | | | | | | | |
 721                  *   |  | | | | | | | | | | +- Home Button
 722                  *   |  | | | | | | | | | +--- Search Button
 723                  *   |  | | | | | | | | +----- Mail Button
 724                  *   |  | | | | | | | +------- Thinkpad Button
 725                  *   |  | | | | | | +--------- Zoom (Fn + Space)
 726                  *   |  | | | | | +----------- WLAN Button
 727                  *   |  | | | | +------------- Video Button
 728                  *   |  | | | +--------------- Hibernate Button
 729                  *   |  | | +----------------- Thinklight Button
 730                  *   |  | +------------------- Screen expand (Fn + F8)
 731                  *   |  +--------------------- Brightness
 732                  *   +------------------------ Volume/Mute
 733                  */
 734                 key = rtcin(IBM_RTC_HOTKEY1);
 735                 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
 736                 key = rtcin(IBM_RTC_HOTKEY2);
 737                 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
 738                 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
 739                 key = rtcin(IBM_RTC_THINKLIGHT);
 740                 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
 741                 key = rtcin(IBM_RTC_SCREENEXPAND);
 742                 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
 743                 key = rtcin(IBM_RTC_BRIGHTNESS);
 744                 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
 745                 key = rtcin(IBM_RTC_VOLUME);
 746                 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
 747                 break;
 748
 749         case ACPI_IBM_METHOD_BRIGHTNESS:
 750                 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
 751                 val = val_ec & IBM_EC_MASK_BRI;
 752                 break;
 753
 754         case ACPI_IBM_METHOD_VOLUME:
 755                 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
 756                 val = val_ec & IBM_EC_MASK_VOL;
 757                 break;
 758
 759         case ACPI_IBM_METHOD_MUTE:
 760                 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
 761                 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
 762                 break;
 763
 764         case ACPI_IBM_METHOD_THINKLIGHT:
 765                 if (sc->light_get_supported)
 766                         acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
 767                 else
 768                         val = sc->light_val;
 769                 break;
 770
 771         case ACPI_IBM_METHOD_BLUETOOTH:
 772                 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
 773                 sc->wlan_bt_flags = val;
 774                 val = ((val & IBM_NAME_MASK_BT) != 0);
 775                 break;
 776
 777         case ACPI_IBM_METHOD_WLAN:
 778                 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
 779                 sc->wlan_bt_flags = val;
 780                 val = ((val & IBM_NAME_MASK_WLAN) != 0);
 781                 break;
 782
 783         case ACPI_IBM_METHOD_FANSPEED:
 784                 if (sc->fan_handle) {
 785                         if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
 786                                 val = -1;
 787                 }
 788                 else {
 789                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
 790                         val = val_ec;
 791                 }
 792                 break;
 793
 794         case ACPI_IBM_METHOD_FANLEVEL:
 795                 /*
 796                  * The IBM_EC_FANSTATUS register works as follows:
 797                  * Bit 0-5 indicate the level at which the fan operates. Only
 798                  *       values between 0 and 7 have an effect. Everything
 799                  *       above 7 is treated the same as level 7
 800                  * Bit 6 overrides the fan speed limit if set to 1
 801                  * Bit 7 indicates at which mode the fan operates:
 802                  *       manual (0) or automatic (1)
 803                  */
 804                 if (!sc->fan_handle) {
 805                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 806                         val = val_ec & IBM_EC_MASK_FANLEVEL;
 807                 }
 808                 break;
 809
 810         case ACPI_IBM_METHOD_FANSTATUS:
 811                 if (!sc->fan_handle) {
 812                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 813                         val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
 814                 }
 815                 else
 816                         val = -1;
 817                 break;
 818         case ACPI_IBM_METHOD_MIC_LED:
 819                 if (sc->mic_led_handle)
 820                         return sc->mic_led_state;
 821                 else
 822                         val = -1;
 823                 break;
 824         }
 825
 826         return (val);
 827 }
 828
 829 static int
 830 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
 831 {
 832         int                     val;
 833         UINT64                  val_ec;
 834         ACPI_STATUS             status;
 835
 836         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 837         ACPI_SERIAL_ASSERT(ibm);
 838
 839         switch (method) {
 840         case ACPI_IBM_METHOD_EVENTS:
 841                 if (arg < 0 || arg > 1)
 842                         return (EINVAL);
 843
 844                 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
 845                 if (ACPI_FAILURE(status))
 846                         return (status);
 847                 if (sc->events_mask_supported)
 848                         return acpi_ibm_eventmask_set(sc, sc->events_availmask);
 849                 break;
 850
 851         case ACPI_IBM_METHOD_EVENTMASK:
 852                 if (sc->events_mask_supported)
 853                         return acpi_ibm_eventmask_set(sc, arg);
 854                 break;
 855
 856         case ACPI_IBM_METHOD_BRIGHTNESS:
 857                 return acpi_ibm_brightness_set(sc, arg);
 858                 break;
 859
 860         case ACPI_IBM_METHOD_VOLUME:
 861                 return acpi_ibm_volume_set(sc, arg);
 862                 break;
 863
 864         case ACPI_IBM_METHOD_MUTE:
 865                 return acpi_ibm_mute_set(sc, arg);
 866                 break;
 867
 868         case ACPI_IBM_METHOD_MIC_LED:
 869                 return acpi_ibm_mic_led_set (sc, arg);
 870                 break;
 871
 872         case ACPI_IBM_METHOD_THINKLIGHT:
 873                 return acpi_ibm_thinklight_set(sc, arg);
 874                 break;
 875
 876         case ACPI_IBM_METHOD_BLUETOOTH:
 877                 return acpi_ibm_bluetooth_set(sc, arg);
 878                 break;
 879
 880         case ACPI_IBM_METHOD_FANLEVEL:
 881                 if (arg < 0 || arg > 7)
 882                         return (EINVAL);
 883
 884                 if (!sc->fan_handle) {
 885                         /* Read the current fanstatus */
 886                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 887                         val = val_ec & (~IBM_EC_MASK_FANLEVEL);
 888
 889                         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val | arg, 1);
 890                 }
 891                 break;
 892
 893         case ACPI_IBM_METHOD_FANSTATUS:
 894                 if (arg < 0 || arg > 1)
 895                         return (EINVAL);
 896
 897                 if (!sc->fan_handle) {
 898                         /* Read the current fanstatus */
 899                         ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
 900
 901                         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
 902                                 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
 903                 }
 904                 break;
 905         }
 906
 907         return (0);
 908 }
 909
 910 static int
 911 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
 912 {
 913         int                     dummy;
 914         ACPI_OBJECT_TYPE        cmos_t;
 915         ACPI_HANDLE             ledb_handle;
 916
 917         switch (method) {
 918         case ACPI_IBM_METHOD_EVENTS:
 919                 return (TRUE);
 920
 921         case ACPI_IBM_METHOD_EVENTMASK:
 922                 return (sc->events_mask_supported);
 923
 924         case ACPI_IBM_METHOD_HOTKEY:
 925         case ACPI_IBM_METHOD_BRIGHTNESS:
 926         case ACPI_IBM_METHOD_VOLUME:
 927         case ACPI_IBM_METHOD_MUTE:
 928                 /* EC is required here, which was already checked before */
 929                 return (TRUE);
 930
 931         case ACPI_IBM_METHOD_MIC_LED:
 932                 if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))
 933                 {
 934                         /* Turn off mic led by default */
 935                         acpi_ibm_mic_led_set (sc, 0);
 936                         return(TRUE);
 937                 }
 938                 else
 939                         sc->mic_led_handle = NULL;
 940                 return (FALSE);
 941
 942         case ACPI_IBM_METHOD_THINKLIGHT:
 943                 sc->cmos_handle = NULL;
 944                 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
 945                     sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
 946
 947                 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
 948                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
 949                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
 950                      ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
 951                      cmos_t == ACPI_TYPE_METHOD) {
 952                         sc->light_cmd_on = 0x0c;
 953                         sc->light_cmd_off = 0x0d;
 954                         sc->cmos_handle = sc->light_handle;
 955                 }
 956                 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
 957                         sc->light_cmd_on = 1;
 958                         sc->light_cmd_off = 0;
 959                 }
 960                 else
 961                         sc->light_handle = NULL;
 962
 963                 sc->light_set_supported = (sc->light_handle &&
 964                     ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
 965
 966                 if (sc->light_get_supported)
 967                         return (TRUE);
 968
 969                 if (sc->light_set_supported) {
 970                         sc->light_val = 0;
 971                         return (TRUE);
 972                 }
 973
 974                 return (FALSE);
 975
 976         case ACPI_IBM_METHOD_BLUETOOTH:
 977         case ACPI_IBM_METHOD_WLAN:
 978                 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
 979                         return (TRUE);
 980                 return (FALSE);
 981
 982         case ACPI_IBM_METHOD_FANSPEED:
 983                 /*
 984                  * Some models report the fan speed in levels from 0-7
 985                  * Newer models report it contiguously
 986                  */
 987                 sc->fan_levels =
 988                     (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
 989                      ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
 990                 return (TRUE);
 991
 992         case ACPI_IBM_METHOD_FANLEVEL:
 993         case ACPI_IBM_METHOD_FANSTATUS:
 994                 /*
 995                  * Fan status is only supported on those models,
 996                  * which report fan RPM contiguously, not in levels
 997                  */
 998                 if (sc->fan_levels)
 999                         return (FALSE);
1000                 return (TRUE);
1001
1002         case ACPI_IBM_METHOD_THERMAL:
1003                 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
1004                         sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
1005                         return (TRUE);
1006                 }
1007                 return (FALSE);
1008
1009         case ACPI_IBM_METHOD_HANDLEREVENTS:
1010                 return (TRUE);
1011         }
1012         return (FALSE);
1013 }
1014
1015 static int
1016 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
1017 {
1018         struct acpi_ibm_softc   *sc;
1019         int                     error = 0;
1020         char                    temp_cmd[] = "TMP0";
1021         int                     temp[8];
1022
1023         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1024
1025         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1026
1027         ACPI_SERIAL_BEGIN(ibm);
1028
1029         for (int i = 0; i < 8; ++i) {
1030                 temp_cmd[3] = '0' + i;
1031
1032                 /*
1033                  * The TMPx methods seem to return +/- 128 or 0
1034                  * when the respecting sensor is not available
1035                  */
1036                 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
1037                     &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
1038                         temp[i] = -1;
1039                 else if (sc->thermal_updt_supported)
1040                         /* Temperature is reported in tenth of Kelvin */
1041                         temp[i] = (temp[i] - 2731 + 5) / 10;
1042         }
1043
1044         error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
1045
1046         ACPI_SERIAL_END(ibm);
1047         return (error);
1048 }
1049
1050 static int
1051 acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)
1052 {
1053         struct acpi_ibm_softc   *sc;
1054         int                     error = 0;
1055         struct sbuf             sb;
1056         char                    *cp, *ep;
1057         int                     l, val;
1058         unsigned int            handler_events;
1059         char                    temp[128];
1060
1061         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1062
1063         sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1064
1065         if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
1066                 return (ENOMEM);
1067
1068         ACPI_SERIAL_BEGIN(ibm);
1069
1070         /* Get old values if this is a get request. */
1071         if (req->newptr == NULL) {
1072                 for (int i = 0; i < 8 * sizeof(sc->handler_events); i++)
1073                         if (sc->handler_events & (1 << i))
1074                                 sbuf_printf(&sb, "0x%02x ", i + 1);
1075                 if (sbuf_len(&sb) == 0)
1076                         sbuf_printf(&sb, "NONE");
1077         }
1078
1079         sbuf_trim(&sb);
1080         sbuf_finish(&sb);
1081         strlcpy(temp, sbuf_data(&sb), sizeof(temp));
1082         sbuf_delete(&sb);
1083
1084         error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
1085
1086         /* Check for error or no change */
1087         if (error != 0 || req->newptr == NULL)
1088                 goto out;
1089
1090         /* If the user is setting a string, parse it. */
1091         handler_events = 0;
1092         cp = temp;
1093         while (*cp) {
1094                 if (isspace(*cp)) {
1095                         cp++;
1096                         continue;
1097                 }
1098
1099                 ep = cp;
1100
1101                 while (*ep && !isspace(*ep))
1102                         ep++;
1103
1104                 l = ep - cp;
1105                 if (l == 0)
1106                         break;
1107
1108                 if (strncmp(cp, "NONE", 4) == 0) {
1109                         cp = ep;
1110                         continue;
1111                 }
1112
1113                 if (l >= 3 && cp[0] == '0' && (cp[1] == 'X' || cp[1] == 'x'))
1114                         val = strtoul(cp, &ep, 16);
1115                 else
1116                         val = strtoul(cp, &ep, 10);
1117
1118                 if (val == 0 || ep == cp || val >= 8 * sizeof(handler_events)) {
1119                         cp[l] = '\0';
1120                         device_printf(sc->dev, "invalid event code: %s\n", cp);
1121                         error = EINVAL;
1122                         goto out;
1123                 }
1124
1125                 handler_events |= 1 << (val - 1);
1126
1127                 cp = ep;
1128         }
1129
1130         sc->handler_events = handler_events;
1131 out:
1132         ACPI_SERIAL_END(ibm);
1133         return (error);
1134 }
1135
1136 static int
1137 acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg)
1138 {
1139         int                     val, step;
1140         UINT64                  val_ec;
1141         ACPI_OBJECT             Arg;
1142         ACPI_OBJECT_LIST        Args;
1143         ACPI_STATUS             status;
1144
1145         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1146         ACPI_SERIAL_ASSERT(ibm);
1147
1148         if (arg < 0 || arg > 7)
1149                 return (EINVAL);
1150
1151         /* Read the current brightness */
1152         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
1153         if (ACPI_FAILURE(status))
1154                 return (status);
1155
1156         if (sc->cmos_handle) {
1157                 val = val_ec & IBM_EC_MASK_BRI;
1158
1159                 Args.Count = 1;
1160                 Args.Pointer = &Arg;
1161                 Arg.Type = ACPI_TYPE_INTEGER;
1162                 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP :
1163                                                   IBM_CMOS_BRIGHTNESS_DOWN;
1164
1165                 step = (arg > val) ? 1 : -1;
1166                 for (int i = val; i != arg; i += step) {
1167                         status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1168                                                     &Args, NULL);
1169                         if (ACPI_FAILURE(status)) {
1170                                 /* Record the last value */
1171                                 if (i != val) {
1172                                         ACPI_EC_WRITE(sc->ec_dev,
1173                                             IBM_EC_BRIGHTNESS, i - step, 1);
1174                                 }
1175                                 return (status);
1176                         }
1177                 }
1178         }
1179
1180         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
1181 }
1182
1183 static int
1184 acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg)
1185 {
1186         int                     val;
1187
1188         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1189         ACPI_SERIAL_ASSERT(ibm);
1190
1191         if (arg < 0 || arg > 1)
1192                 return (EINVAL);
1193
1194         val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT :
1195                            sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
1196         return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
1197 }
1198
1199 static int
1200 acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg)
1201 {
1202         ACPI_OBJECT             Arg;
1203         ACPI_OBJECT_LIST        Args;
1204         ACPI_STATUS             status;
1205
1206         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1207         ACPI_SERIAL_ASSERT(ibm);
1208
1209         if (arg < 0 || arg > 1)
1210                 return (EINVAL);
1211
1212         if (sc->light_set_supported) {
1213                 Args.Count = 1;
1214                 Args.Pointer = &Arg;
1215                 Arg.Type = ACPI_TYPE_INTEGER;
1216                 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
1217
1218                 status = AcpiEvaluateObject(sc->light_handle, NULL,
1219                                             &Args, NULL);
1220                 if (ACPI_SUCCESS(status))
1221                         sc->light_val = arg;
1222                 return (status);
1223         }
1224
1225         return (0);
1226 }
1227
1228 static int
1229 acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
1230 {
1231         int                     val, step;
1232         UINT64                  val_ec;
1233         ACPI_OBJECT             Arg;
1234         ACPI_OBJECT_LIST        Args;
1235         ACPI_STATUS             status;
1236
1237         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1238         ACPI_SERIAL_ASSERT(ibm);
1239
1240         if (arg < 0 || arg > 14)
1241                 return (EINVAL);
1242
1243         /* Read the current volume */
1244         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1245         if (ACPI_FAILURE(status))
1246                 return (status);
1247
1248         if (sc->cmos_handle) {
1249                 val = val_ec & IBM_EC_MASK_VOL;
1250
1251                 Args.Count = 1;
1252                 Args.Pointer = &Arg;
1253                 Arg.Type = ACPI_TYPE_INTEGER;
1254                 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP :
1255                                                   IBM_CMOS_VOLUME_DOWN;
1256
1257                 step = (arg > val) ? 1 : -1;
1258                 for (int i = val; i != arg; i += step) {
1259                         status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1260                                                     &Args, NULL);
1261                         if (ACPI_FAILURE(status)) {
1262                                 /* Record the last value */
1263                                 if (i != val) {
1264                                         val_ec = i - step +
1265                                                  (val_ec & (~IBM_EC_MASK_VOL));
1266                                         ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME,
1267                                                       val_ec, 1);
1268                                 }
1269                                 return (status);
1270                         }
1271                 }
1272         }
1273
1274         val_ec = arg + (val_ec & (~IBM_EC_MASK_VOL));
1275         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1276 }
1277
1278 static int
1279 acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg)
1280 {
1281         UINT64                  val_ec;
1282         ACPI_OBJECT             Arg;
1283         ACPI_OBJECT_LIST        Args;
1284         ACPI_STATUS             status;
1285
1286         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1287         ACPI_SERIAL_ASSERT(ibm);
1288
1289         if (arg < 0 || arg > 1)
1290                 return (EINVAL);
1291
1292         status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1293         if (ACPI_FAILURE(status))
1294                 return (status);
1295
1296         if (sc->cmos_handle) {
1297                 Args.Count = 1;
1298                 Args.Pointer = &Arg;
1299                 Arg.Type = ACPI_TYPE_INTEGER;
1300                 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
1301
1302                 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
1303                 if (ACPI_FAILURE(status))
1304                         return (status);
1305         }
1306
1307         val_ec = (arg == 1) ? val_ec | IBM_EC_MASK_MUTE :
1308                               val_ec & (~IBM_EC_MASK_MUTE);
1309         return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1310 }
1311
1312 static void
1313 acpi_ibm_eventhandler(struct acpi_ibm_softc *sc, int arg)
1314 {
1315         int                     val;
1316         UINT64                  val_ec;
1317         ACPI_STATUS             status;
1318
1319         ACPI_SERIAL_BEGIN(ibm);
1320         switch (arg) {
1321         case IBM_EVENT_SUSPEND_TO_RAM:
1322                 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
1323                 break;
1324
1325         case IBM_EVENT_BLUETOOTH:
1326                 acpi_ibm_bluetooth_set(sc, (sc->wlan_bt_flags == 0));
1327                 break;
1328
1329         case IBM_EVENT_BRIGHTNESS_UP:
1330         case IBM_EVENT_BRIGHTNESS_DOWN:
1331                 /* Read the current brightness */
1332                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS,
1333                                       &val_ec, 1);
1334                 if (ACPI_FAILURE(status))
1335                         return;
1336
1337                 val = val_ec & IBM_EC_MASK_BRI;
1338                 val = (arg == IBM_EVENT_BRIGHTNESS_UP) ? val + 1 : val - 1;
1339                 acpi_ibm_brightness_set(sc, val);
1340                 break;
1341
1342         case IBM_EVENT_THINKLIGHT:
1343                 acpi_ibm_thinklight_set(sc, (sc->light_val == 0));
1344                 break;
1345
1346         case IBM_EVENT_VOLUME_UP:
1347         case IBM_EVENT_VOLUME_DOWN:
1348                 /* Read the current volume */
1349                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1350                 if (ACPI_FAILURE(status))
1351                         return;
1352
1353                 val = val_ec & IBM_EC_MASK_VOL;
1354                 val = (arg == IBM_EVENT_VOLUME_UP) ? val + 1 : val - 1;
1355                 acpi_ibm_volume_set(sc, val);
1356                 break;
1357
1358         case IBM_EVENT_MUTE:
1359                 /* Read the current value */
1360                 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1361                 if (ACPI_FAILURE(status))
1362                         return;
1363
1364                 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
1365                 acpi_ibm_mute_set(sc, (val == 0));
1366                 break;
1367
1368         default:
1369                 break;
1370         }
1371         ACPI_SERIAL_END(ibm);
1372 }
1373
1374 static void
1375 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
1376 {
1377         int             event, arg, type;
1378         device_t        dev = context;
1379         struct acpi_ibm_softc *sc = device_get_softc(dev);
1380
1381         ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
1382
1383         if (notify != 0x80)
1384                 device_printf(dev, "Unknown notify\n");
1385
1386         for (;;) {
1387                 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
1388                 if (event == 0)
1389                         break;
1390
1391
1392                 type = (event >> 12) & 0xf;
1393                 arg = event & 0xfff;
1394                 switch (type) {
1395                 case 1:
1396                         if (!(sc->events_availmask & (1 << (arg - 1)))) {
1397                                 device_printf(dev, "Unknown key %d\n", arg);
1398                                 break;
1399                         }
1400
1401                         /* Execute event handler */
1402                         if (sc->handler_events & (1 << (arg - 1)))
1403                                 acpi_ibm_eventhandler(sc, (arg & 0xff));
1404
1405                         /* Notify devd(8) */
1406                         acpi_UserNotify("IBM", h, (arg & 0xff));
1407                         break;
1408                 default:
1409                         break;
1410                 }
1411         }
1412 }