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