acpi_toshiba.c

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    1 /*-
    2  * Copyright (c) 2003 Hiroyuki Aizu <aizu@navi.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 #include "opt_acpi.h"
   32 #include <sys/param.h>
   33 #include <sys/kernel.h>
   34 #include <sys/module.h>
   35 #include <sys/bus.h>
   36 
   37 #include <contrib/dev/acpica/include/acpi.h>
   38 
   39 #include <dev/acpica/acpivar.h>
   40 
   41 #define _COMPONENT      ACPI_OEM
   42 ACPI_MODULE_NAME("Toshiba")
   43 
   44 /*
   45  * Toshiba HCI interface definitions
   46  *
   47  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
   48  * be uniform across all their models.  Ideally we would just call
   49  * dedicated ACPI methods instead of using this primitive interface.
   50  * However, the ACPI methods seem to be incomplete in some areas (for
   51  * example they allow setting, but not reading, the LCD brightness
   52  * value), so this is still useful.
   53  */
   54 
   55 #define METHOD_HCI              "GHCI"
   56 #define METHOD_HCI_ENABLE       "ENAB"
   57 #define METHOD_VIDEO            "DSSX"
   58 
   59 /* Operations */
   60 #define HCI_SET                         0xFF00
   61 #define HCI_GET                         0xFE00
   62 
   63 /* Return codes */
   64 #define HCI_SUCCESS                     0x0000
   65 #define HCI_FAILURE                     0x1000
   66 #define HCI_NOT_SUPPORTED               0x8000
   67 #define HCI_EMPTY                       0x8C00
   68 
   69 /* Functions */
   70 #define HCI_REG_LCD_BACKLIGHT           0x0002
   71 #define HCI_REG_FAN                     0x0004
   72 #define HCI_REG_SYSTEM_EVENT            0x0016
   73 #define HCI_REG_VIDEO_OUTPUT            0x001C
   74 #define HCI_REG_HOTKEY_EVENT            0x001E
   75 #define HCI_REG_LCD_BRIGHTNESS          0x002A
   76 #define HCI_REG_CPU_SPEED               0x0032
   77 
   78 /* Field definitions */
   79 #define HCI_FAN_SHIFT                   7
   80 #define HCI_LCD_BRIGHTNESS_BITS         3
   81 #define HCI_LCD_BRIGHTNESS_SHIFT        (16 - HCI_LCD_BRIGHTNESS_BITS)
   82 #define HCI_LCD_BRIGHTNESS_MAX          ((1 << HCI_LCD_BRIGHTNESS_BITS) - 1)
   83 #define HCI_VIDEO_OUTPUT_FLAG           0x0100
   84 #define HCI_VIDEO_OUTPUT_LCD            0x1
   85 #define HCI_VIDEO_OUTPUT_CRT            0x2
   86 #define HCI_VIDEO_OUTPUT_TV             0x4
   87 #define HCI_CPU_SPEED_BITS              3
   88 #define HCI_CPU_SPEED_SHIFT             (16 - HCI_CPU_SPEED_BITS)
   89 #define HCI_CPU_SPEED_MAX               ((1 << HCI_CPU_SPEED_BITS) - 1)
   90 
   91 /* Key press/release events. */
   92 #define FN_F1_PRESS     0x013B
   93 #define FN_F1_RELEASE   0x01BB
   94 #define FN_F2_PRESS     0x013C
   95 #define FN_F2_RELEASE   0x01BC
   96 #define FN_F3_PRESS     0x013D
   97 #define FN_F3_RELEASE   0x01BD
   98 #define FN_F4_PRESS     0x013E
   99 #define FN_F4_RELEASE   0x01BE
  100 #define FN_F5_PRESS     0x013F
  101 #define FN_F5_RELEASE   0x01BF
  102 #define FN_F6_PRESS     0x0140
  103 #define FN_F6_RELEASE   0x01C0
  104 #define FN_F7_PRESS     0x0141
  105 #define FN_F7_RELEASE   0x01C1
  106 #define FN_F8_PRESS     0x0142
  107 #define FN_F8_RELEASE   0x01C2
  108 #define FN_F9_PRESS     0x0143
  109 #define FN_F9_RELEASE   0x01C3
  110 #define FN_BS_PRESS     0x010E
  111 #define FN_BS_RELEASE   0x018E
  112 #define FN_ESC_PRESS    0x0101
  113 #define FN_ESC_RELEASE  0x0181
  114 #define FN_KNJ_PRESS    0x0129
  115 #define FN_KNJ_RELEASE  0x01A9
  116 
  117 /* HCI register definitions. */
  118 #define HCI_WORDS       6               /* Number of registers */
  119 #define HCI_REG_AX      0               /* Operation, then return value */
  120 #define HCI_REG_BX      1               /* Function */
  121 #define HCI_REG_CX      2               /* Argument (in or out) */
  122 #define HCI_REG_DX      3               /* Unused? */
  123 #define HCI_REG_SI      4               /* Unused? */
  124 #define HCI_REG_DI      5               /* Unused? */
  125 
  126 struct acpi_toshiba_softc {
  127         device_t        dev;
  128         ACPI_HANDLE     handle;
  129         ACPI_HANDLE     video_handle;
  130         struct          sysctl_ctx_list sysctl_ctx;
  131         struct          sysctl_oid *sysctl_tree;
  132 };
  133 
  134 /* Prototype for HCI functions for getting/setting a value. */
  135 typedef int     hci_fn_t(ACPI_HANDLE, int, UINT32 *);
  136 
  137 static int      acpi_toshiba_probe(device_t dev);
  138 static int      acpi_toshiba_attach(device_t dev);
  139 static int      acpi_toshiba_detach(device_t dev);
  140 static int      acpi_toshiba_sysctl(SYSCTL_HANDLER_ARGS);
  141 static hci_fn_t hci_force_fan;
  142 static hci_fn_t hci_video_output;
  143 static hci_fn_t hci_lcd_brightness;
  144 static hci_fn_t hci_lcd_backlight;
  145 static hci_fn_t hci_cpu_speed;
  146 static int      hci_call(ACPI_HANDLE h, int op, int function, UINT32 *arg);
  147 static void     hci_key_action(struct acpi_toshiba_softc *sc, ACPI_HANDLE h,
  148                     UINT32 key);
  149 static void     acpi_toshiba_notify(ACPI_HANDLE h, UINT32 notify,
  150                     void *context);
  151 static int      acpi_toshiba_video_probe(device_t dev);
  152 static int      acpi_toshiba_video_attach(device_t dev);
  153 
  154 ACPI_SERIAL_DECL(toshiba, "ACPI Toshiba Extras");
  155 
  156 /* Table of sysctl names and HCI functions to call. */
  157 static struct {
  158         char            *name;
  159         hci_fn_t        *handler;
  160 } sysctl_table[] = {
  161         /* name,                handler */
  162         {"force_fan",           hci_force_fan},
  163         {"video_output",        hci_video_output},
  164         {"lcd_brightness",      hci_lcd_brightness},
  165         {"lcd_backlight",       hci_lcd_backlight},
  166         {"cpu_speed",           hci_cpu_speed},
  167         {NULL, NULL}
  168 };
  169 
  170 static device_method_t acpi_toshiba_methods[] = {
  171         DEVMETHOD(device_probe,         acpi_toshiba_probe),
  172         DEVMETHOD(device_attach,        acpi_toshiba_attach),
  173         DEVMETHOD(device_detach,        acpi_toshiba_detach),
  174 
  175         DEVMETHOD_END
  176 };
  177 
  178 static driver_t acpi_toshiba_driver = {
  179         "acpi_toshiba",
  180         acpi_toshiba_methods,
  181         sizeof(struct acpi_toshiba_softc),
  182 };
  183 
  184 DRIVER_MODULE(acpi_toshiba, acpi, acpi_toshiba_driver, 0, 0);
  185 MODULE_DEPEND(acpi_toshiba, acpi, 1, 1, 1);
  186 
  187 static device_method_t acpi_toshiba_video_methods[] = {
  188         DEVMETHOD(device_probe,         acpi_toshiba_video_probe),
  189         DEVMETHOD(device_attach,        acpi_toshiba_video_attach),
  190 
  191         DEVMETHOD_END
  192 };
  193 
  194 static driver_t acpi_toshiba_video_driver = {
  195         "acpi_toshiba_video",
  196         acpi_toshiba_video_methods,
  197         0,
  198 };
  199 
  200 DRIVER_MODULE(acpi_toshiba_video, acpi, acpi_toshiba_video_driver, 0, 0);
  201 MODULE_DEPEND(acpi_toshiba_video, acpi, 1, 1, 1);
  202 
  203 static int      enable_fn_keys = 1;
  204 TUNABLE_INT("hw.acpi.toshiba.enable_fn_keys", &enable_fn_keys);
  205 
  206 /*
  207  * HID      Model
  208  * -------------------------------------
  209  * TOS6200  Libretto L Series
  210  *          Dynabook Satellite 2455
  211  *          Dynabook SS 3500
  212  * TOS6207  Dynabook SS2110 Series
  213  * TOS6208  SPA40
  214  */
  215 static int
  216 acpi_toshiba_probe(device_t dev)
  217 {
  218         static char *tosh_ids[] = { "TOS6200", "TOS6207", "TOS6208", NULL };
  219         int rv;
  220 
  221         if (acpi_disabled("toshiba") ||
  222             device_get_unit(dev) != 0)
  223                 return (ENXIO);
  224         rv = ACPI_ID_PROBE(device_get_parent(dev), dev, tosh_ids, NULL);
  225         if (rv <= 0)
  226                 device_set_desc(dev, "Toshiba HCI Extras");
  227         return (rv);
  228 }
  229 
  230 static int
  231 acpi_toshiba_attach(device_t dev)
  232 {
  233         struct          acpi_toshiba_softc *sc;
  234         struct          acpi_softc *acpi_sc;
  235         ACPI_STATUS     status;
  236         int             i;
  237 
  238         sc = device_get_softc(dev);
  239         sc->dev = dev;
  240         sc->handle = acpi_get_handle(dev);
  241 
  242         acpi_sc = acpi_device_get_parent_softc(dev);
  243         sysctl_ctx_init(&sc->sysctl_ctx);
  244         sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
  245             SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
  246             "toshiba", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
  247 
  248         for (i = 0; sysctl_table[i].name != NULL; i++) {
  249                 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
  250                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
  251                     sysctl_table[i].name,
  252                     CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY |
  253                     CTLFLAG_MPSAFE, sc, i, acpi_toshiba_sysctl, "I", "");
  254         }
  255 
  256         if (enable_fn_keys != 0) {
  257                 status = AcpiEvaluateObject(sc->handle, METHOD_HCI_ENABLE,
  258                                             NULL, NULL);
  259                 if (ACPI_FAILURE(status)) {
  260                         device_printf(dev, "enable FN keys failed\n");
  261                         sysctl_ctx_free(&sc->sysctl_ctx);
  262                         return (ENXIO);
  263                 }
  264                 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
  265                                          acpi_toshiba_notify, sc);
  266         }
  267 
  268         return (0);
  269 }
  270 
  271 static int
  272 acpi_toshiba_detach(device_t dev)
  273 {
  274         struct          acpi_toshiba_softc *sc;
  275 
  276         sc = device_get_softc(dev);
  277         if (enable_fn_keys != 0) {
  278                 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
  279                                         acpi_toshiba_notify);
  280         }
  281         sysctl_ctx_free(&sc->sysctl_ctx);
  282 
  283         return (0);
  284 }
  285 
  286 static int
  287 acpi_toshiba_sysctl(SYSCTL_HANDLER_ARGS)
  288 {
  289         struct          acpi_toshiba_softc *sc;
  290         UINT32          arg;
  291         int             function, error = 0;
  292         hci_fn_t        *handler;
  293 
  294         sc = (struct acpi_toshiba_softc *)oidp->oid_arg1;
  295         function = oidp->oid_arg2;
  296         handler = sysctl_table[function].handler;
  297 
  298         /* Get the current value from the appropriate function. */
  299         ACPI_SERIAL_BEGIN(toshiba);
  300         error = handler(sc->handle, HCI_GET, &arg);
  301         if (error != 0)
  302                 goto out;
  303 
  304         /* Send the current value to the user and return if no new value. */
  305         error = sysctl_handle_int(oidp, &arg, 0, req);
  306         if (error != 0 || req->newptr == NULL)
  307                 goto out;
  308 
  309         /* Set the new value via the appropriate function. */
  310         error = handler(sc->handle, HCI_SET, &arg);
  311 
  312 out:
  313         ACPI_SERIAL_END(toshiba);
  314         return (error);
  315 }
  316 
  317 static int
  318 hci_force_fan(ACPI_HANDLE h, int op, UINT32 *state)
  319 {
  320         int             ret;
  321 
  322         ACPI_SERIAL_ASSERT(toshiba);
  323         if (op == HCI_SET) {
  324                 if (*state > 1)
  325                         return (EINVAL);
  326                 *state <<= HCI_FAN_SHIFT;
  327         }
  328         ret = hci_call(h, op, HCI_REG_FAN, state);
  329         if (ret == 0 && op == HCI_GET)
  330                 *state >>= HCI_FAN_SHIFT;
  331         return (ret);
  332 }
  333 
  334 static int
  335 hci_video_output(ACPI_HANDLE h, int op, UINT32 *video_output)
  336 {
  337         int             ret;
  338         ACPI_STATUS     status;
  339 
  340         ACPI_SERIAL_ASSERT(toshiba);
  341         if (op == HCI_SET) {
  342                 if (*video_output < 1 || *video_output > 7)
  343                         return (EINVAL);
  344                 if (h == NULL)
  345                         return (ENXIO);
  346                 *video_output |= HCI_VIDEO_OUTPUT_FLAG;
  347                 status = acpi_SetInteger(h, METHOD_VIDEO, *video_output);
  348                 if (ACPI_SUCCESS(status))
  349                         ret = 0;
  350                 else
  351                         ret = ENXIO;
  352         } else {
  353                 ret = hci_call(h, op, HCI_REG_VIDEO_OUTPUT, video_output);
  354                 if (ret == 0)
  355                         *video_output &= 0xff;
  356         }
  357 
  358         return (ret);
  359 }
  360 
  361 static int
  362 hci_lcd_brightness(ACPI_HANDLE h, int op, UINT32 *brightness)
  363 {
  364         int             ret;
  365 
  366         ACPI_SERIAL_ASSERT(toshiba);
  367         if (op == HCI_SET) {
  368                 if (*brightness > HCI_LCD_BRIGHTNESS_MAX)
  369                         return (EINVAL);
  370                 *brightness <<= HCI_LCD_BRIGHTNESS_SHIFT;
  371         }
  372         ret = hci_call(h, op, HCI_REG_LCD_BRIGHTNESS, brightness);
  373         if (ret == 0 && op == HCI_GET)
  374                 *brightness >>= HCI_LCD_BRIGHTNESS_SHIFT;
  375         return (ret);
  376 }
  377 
  378 static int
  379 hci_lcd_backlight(ACPI_HANDLE h, int op, UINT32 *backlight)
  380 {
  381 
  382         ACPI_SERIAL_ASSERT(toshiba);
  383         if (op == HCI_SET) {
  384                 if (*backlight > 1)
  385                         return (EINVAL);
  386         }
  387         return (hci_call(h, op, HCI_REG_LCD_BACKLIGHT, backlight));
  388 }
  389 
  390 static int
  391 hci_cpu_speed(ACPI_HANDLE h, int op, UINT32 *speed)
  392 {
  393         int             ret;
  394 
  395         ACPI_SERIAL_ASSERT(toshiba);
  396         if (op == HCI_SET) {
  397                 if (*speed > HCI_CPU_SPEED_MAX)
  398                         return (EINVAL);
  399                 *speed <<= HCI_CPU_SPEED_SHIFT;
  400         }
  401         ret = hci_call(h, op, HCI_REG_CPU_SPEED, speed);
  402         if (ret == 0 && op == HCI_GET)
  403                 *speed >>= HCI_CPU_SPEED_SHIFT;
  404         return (ret);
  405 }
  406 
  407 static int
  408 hci_call(ACPI_HANDLE h, int op, int function, UINT32 *arg)
  409 {
  410         ACPI_OBJECT_LIST args;
  411         ACPI_BUFFER     results;
  412         ACPI_OBJECT     obj[HCI_WORDS];
  413         ACPI_OBJECT     *res;
  414         int             status, i, ret;
  415 
  416         ACPI_SERIAL_ASSERT(toshiba);
  417         status = ENXIO;
  418 
  419         for (i = 0; i < HCI_WORDS; i++) {
  420                 obj[i].Type = ACPI_TYPE_INTEGER;
  421                 obj[i].Integer.Value = 0;
  422         }
  423         obj[HCI_REG_AX].Integer.Value = op;
  424         obj[HCI_REG_BX].Integer.Value = function;
  425         if (op == HCI_SET)
  426                 obj[HCI_REG_CX].Integer.Value = *arg;
  427 
  428         args.Count = HCI_WORDS;
  429         args.Pointer = obj;
  430         results.Pointer = NULL;
  431         results.Length = ACPI_ALLOCATE_BUFFER;
  432         if (ACPI_FAILURE(AcpiEvaluateObject(h, METHOD_HCI, &args, &results)))
  433                 goto end;
  434         res = (ACPI_OBJECT *)results.Pointer;
  435         if (!ACPI_PKG_VALID(res, HCI_WORDS)) {
  436                 printf("toshiba: invalid package!\n");
  437                 return (ENXIO);
  438         }
  439 
  440         acpi_PkgInt32(res, HCI_REG_AX, &ret);
  441         if (ret == HCI_SUCCESS) {
  442                 if (op == HCI_GET)
  443                         acpi_PkgInt32(res, HCI_REG_CX, arg);
  444                 status = 0;
  445         } else if (function == HCI_REG_SYSTEM_EVENT && op == HCI_GET &&
  446             ret == HCI_NOT_SUPPORTED) {
  447                 /*
  448                  * Sometimes system events are disabled without us requesting
  449                  * it.  This workaround attempts to re-enable them.
  450                  *
  451                  * XXX This call probably shouldn't be recursive.  Queueing
  452                  * a task via AcpiOsQueueForExecution() might be better.
  453                  */
  454                  i = 1;
  455                  hci_call(h, HCI_SET, HCI_REG_SYSTEM_EVENT, &i);
  456         }
  457 
  458 end:
  459         if (results.Pointer != NULL)
  460                 AcpiOsFree(results.Pointer);
  461 
  462         return (status);
  463 }
  464 
  465 /*
  466  * Perform a few actions based on the keypress.  Users can extend this
  467  * functionality by reading the keystrokes we send to devd(8).
  468  */
  469 static void
  470 hci_key_action(struct acpi_toshiba_softc *sc, ACPI_HANDLE h, UINT32 key)
  471 {
  472         UINT32          arg;
  473 
  474         ACPI_SERIAL_ASSERT(toshiba);
  475         switch (key) {
  476         case FN_F6_RELEASE:
  477                 /* Decrease LCD brightness. */
  478                 hci_lcd_brightness(h, HCI_GET, &arg);
  479                 if (arg-- == 0)
  480                         arg = 0;
  481                 else
  482                         hci_lcd_brightness(h, HCI_SET, &arg);
  483                 break;
  484         case FN_F7_RELEASE:
  485                 /* Increase LCD brightness. */
  486                 hci_lcd_brightness(h, HCI_GET, &arg);
  487                 if (arg++ == 7)
  488                         arg = 7;
  489                 else
  490                         hci_lcd_brightness(h, HCI_SET, &arg);
  491                 break;
  492         case FN_F5_RELEASE:
  493                 /* Cycle through video outputs. */
  494                 hci_video_output(h, HCI_GET, &arg);
  495                 arg = (arg + 1) % 7;
  496                 hci_video_output(sc->video_handle, HCI_SET, &arg);
  497                 break;
  498         case FN_F8_RELEASE:
  499                 /* Toggle LCD backlight. */
  500                 hci_lcd_backlight(h, HCI_GET, &arg);
  501                 arg = (arg != 0) ? 0 : 1;
  502                 hci_lcd_backlight(h, HCI_SET, &arg);
  503                 break;
  504         case FN_ESC_RELEASE:
  505                 /* Toggle forcing fan on. */
  506                 hci_force_fan(h, HCI_GET, &arg);
  507                 arg = (arg != 0) ? 0 : 1;
  508                 hci_force_fan(h, HCI_SET, &arg);
  509                 break;
  510         }
  511 }
  512 
  513 static void
  514 acpi_toshiba_notify(ACPI_HANDLE h, UINT32 notify, void *context)
  515 {
  516         struct          acpi_toshiba_softc *sc;
  517         UINT32          key;
  518 
  519         sc = (struct acpi_toshiba_softc *)context;
  520 
  521         if (notify == 0x80) {
  522                 ACPI_SERIAL_BEGIN(toshiba);
  523                 while (hci_call(h, HCI_GET, HCI_REG_SYSTEM_EVENT, &key) == 0) {
  524                         hci_key_action(sc, h, key);
  525                         acpi_UserNotify("TOSHIBA", h, (uint8_t)key);
  526                 }
  527                 ACPI_SERIAL_END(toshiba);
  528         } else
  529                 device_printf(sc->dev, "unknown notify: 0x%x\n", notify);
  530 }
  531 
  532 /*
  533  * Toshiba video pseudo-device to provide the DSSX method.
  534  *
  535  * HID      Model
  536  * -------------------------------------
  537  * TOS6201  Libretto L Series
  538  */
  539 static int
  540 acpi_toshiba_video_probe(device_t dev)
  541 {
  542         static char *vid_ids[] = { "TOS6201", NULL };
  543         int rv;
  544 
  545         if (acpi_disabled("toshiba") ||
  546             device_get_unit(dev) != 0)
  547                 return (ENXIO);
  548 
  549         device_quiet(dev);
  550         rv = ACPI_ID_PROBE(device_get_parent(dev), dev, vid_ids, NULL);
  551         if (rv <= 0)
  552                 device_set_desc(dev, "Toshiba Video");
  553         return (rv);
  554 }
  555 
  556 static int
  557 acpi_toshiba_video_attach(device_t dev)
  558 {
  559         struct          acpi_toshiba_softc *sc;
  560 
  561         sc = device_get_softc(dev);
  562         sc->video_handle = acpi_get_handle(dev);
  563         return (0);
  564 }
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This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/acpi_support/acpi_toshiba.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/acpi_support/acpi_toshiba.c
