acpi_panasonic.c

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    1 /*-
    2  * Copyright (c) 2003 OGAWA Takaya <t-ogawa@triaez.kaisei.org>
    3  * Copyright (c) 2004 TAKAHASHI Yoshihiro <nyan@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 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/6.4/sys/dev/acpi_support/acpi_panasonic.c 159666 2006-06-16 14:05:13Z nyan $");
   31 
   32 #include "opt_acpi.h"
   33 #include <sys/param.h>
   34 #include <sys/kernel.h>
   35 #include <sys/malloc.h>
   36 #include <sys/module.h>
   37 #include <sys/bus.h>
   38 #include <sys/power.h>
   39 
   40 #include <contrib/dev/acpica/acpi.h>
   41 #include <dev/acpica/acpivar.h>
   42 
   43 #define _COMPONENT      ACPI_OEM
   44 ACPI_MODULE_NAME("Panasonic")
   45 
   46 /* Debug */
   47 #undef  ACPI_PANASONIC_DEBUG
   48 
   49 /* Operations */
   50 #define HKEY_SET        0
   51 #define HKEY_GET        1
   52 
   53 /* Functions */
   54 #define HKEY_REG_LCD_BRIGHTNESS_MAX_AC  0x02
   55 #define HKEY_REG_LCD_BRIGHTNESS_MIN_AC  0x03
   56 #define HKEY_REG_LCD_BRIGHTNESS_AC      0x04
   57 #define HKEY_REG_LCD_BRIGHTNESS_MAX_DC  0x05
   58 #define HKEY_REG_LCD_BRIGHTNESS_MIN_DC  0x06
   59 #define HKEY_REG_LCD_BRIGHTNESS_DC      0x07
   60 #define HKEY_REG_SOUND_MUTE             0x08
   61 
   62 /* Field definitions */
   63 #define HKEY_LCD_BRIGHTNESS_BITS        4
   64 #define HKEY_LCD_BRIGHTNESS_DIV         ((1 << HKEY_LCD_BRIGHTNESS_BITS) - 1)
   65 
   66 struct acpi_panasonic_softc {
   67         device_t        dev;
   68         ACPI_HANDLE     handle;
   69 
   70         struct sysctl_ctx_list  sysctl_ctx;
   71         struct sysctl_oid       *sysctl_tree;
   72 
   73         eventhandler_tag        power_evh;
   74 };
   75 
   76 /* Prototype for HKEY functions for getting/setting a value. */
   77 typedef int hkey_fn_t(ACPI_HANDLE, int, UINT32 *);
   78 
   79 static int      acpi_panasonic_probe(device_t dev);
   80 static int      acpi_panasonic_attach(device_t dev);
   81 static int      acpi_panasonic_detach(device_t dev);
   82 static int      acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS);
   83 static ACPI_INTEGER acpi_panasonic_sinf(ACPI_HANDLE h, ACPI_INTEGER index);
   84 static void     acpi_panasonic_sset(ACPI_HANDLE h, ACPI_INTEGER index,
   85                     ACPI_INTEGER val);
   86 static int      acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc,
   87                     ACPI_HANDLE h, UINT32 *arg);
   88 static void     acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc,
   89                     ACPI_HANDLE h, UINT32 key);
   90 static void     acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify,
   91                     void *context);
   92 static void     acpi_panasonic_power_profile(void *arg);
   93 
   94 static hkey_fn_t        hkey_lcd_brightness_max;
   95 static hkey_fn_t        hkey_lcd_brightness_min;
   96 static hkey_fn_t        hkey_lcd_brightness;
   97 static hkey_fn_t        hkey_sound_mute;
   98 ACPI_SERIAL_DECL(panasonic, "ACPI Panasonic extras");
   99 
  100 /* Table of sysctl names and HKEY functions to call. */
  101 static struct {
  102         char            *name;
  103         hkey_fn_t       *handler;
  104 } sysctl_table[] = {
  105         /* name,                handler */
  106         {"lcd_brightness_max",  hkey_lcd_brightness_max},
  107         {"lcd_brightness_min",  hkey_lcd_brightness_min},
  108         {"lcd_brightness",      hkey_lcd_brightness},
  109         {"sound_mute",          hkey_sound_mute},
  110         {NULL, NULL}
  111 };
  112 
  113 static device_method_t acpi_panasonic_methods[] = {
  114         DEVMETHOD(device_probe,         acpi_panasonic_probe),
  115         DEVMETHOD(device_attach,        acpi_panasonic_attach),
  116         DEVMETHOD(device_detach,        acpi_panasonic_detach),
  117 
  118         {0, 0}
  119 };
  120 
  121 static driver_t acpi_panasonic_driver = {
  122         "acpi_panasonic",
  123         acpi_panasonic_methods,
  124         sizeof(struct acpi_panasonic_softc),
  125 };
  126 
  127 static devclass_t acpi_panasonic_devclass;
  128 
  129 DRIVER_MODULE(acpi_panasonic, acpi, acpi_panasonic_driver,
  130     acpi_panasonic_devclass, 0, 0);
  131 MODULE_DEPEND(acpi_panasonic, acpi, 1, 1, 1);
  132 
  133 static int
  134 acpi_panasonic_probe(device_t dev)
  135 {
  136         static char *mat_ids[] = { "MAT0019", NULL };
  137 
  138         if (acpi_disabled("panasonic") ||
  139             ACPI_ID_PROBE(device_get_parent(dev), dev, mat_ids) == NULL ||
  140             device_get_unit(dev) != 0)
  141                 return (ENXIO);
  142 
  143         device_set_desc(dev, "Panasonic Notebook Hotkeys");
  144         return (0);
  145 }
  146 
  147 static int
  148 acpi_panasonic_attach(device_t dev)
  149 {
  150         struct acpi_panasonic_softc *sc;
  151         struct acpi_softc *acpi_sc;
  152         ACPI_STATUS status;
  153         int i;
  154 
  155         sc = device_get_softc(dev);
  156         sc->dev = dev;
  157         sc->handle = acpi_get_handle(dev);
  158 
  159         acpi_sc = acpi_device_get_parent_softc(dev);
  160 
  161         /* Build sysctl tree */
  162         sysctl_ctx_init(&sc->sysctl_ctx);
  163         sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
  164             SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
  165             "panasonic", CTLFLAG_RD, 0, "");
  166         for (i = 0; sysctl_table[i].name != NULL; i++) {
  167                 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
  168                     SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
  169                     sysctl_table[i].name,
  170                     CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY,
  171                     sc, i, acpi_panasonic_sysctl, "I", "");
  172         }
  173 
  174 #if 0
  175         /* Activate hotkeys */
  176         status = AcpiEvaluateObject(sc->handle, "", NULL, NULL);
  177         if (ACPI_FAILURE(status)) {
  178                 device_printf(dev, "enable FN keys failed\n");
  179                 sysctl_ctx_free(&sc->sysctl_ctx);
  180                 return (ENXIO);
  181         }
  182 #endif
  183 
  184         /* Handle notifies */
  185         status = AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
  186             acpi_panasonic_notify, sc);
  187         if (ACPI_FAILURE(status)) {
  188                 device_printf(dev, "couldn't install notify handler - %s\n",
  189                     AcpiFormatException(status));
  190                 sysctl_ctx_free(&sc->sysctl_ctx);
  191                 return (ENXIO);
  192         }
  193 
  194         /* Install power profile event handler */
  195         sc->power_evh = EVENTHANDLER_REGISTER(power_profile_change,
  196             acpi_panasonic_power_profile, sc->handle, 0);
  197 
  198         return (0);
  199 }
  200 
  201 static int
  202 acpi_panasonic_detach(device_t dev)
  203 {
  204         struct acpi_panasonic_softc *sc;
  205 
  206         sc = device_get_softc(dev);
  207 
  208         /* Remove power profile event handler */
  209         EVENTHANDLER_DEREGISTER(power_profile_change, sc->power_evh);
  210 
  211         /* Remove notify handler */
  212         AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
  213             acpi_panasonic_notify);
  214 
  215         /* Free sysctl tree */
  216         sysctl_ctx_free(&sc->sysctl_ctx);
  217 
  218         return (0);
  219 }
  220 
  221 static int
  222 acpi_panasonic_sysctl(SYSCTL_HANDLER_ARGS)
  223 {
  224         struct acpi_panasonic_softc *sc;
  225         UINT32 arg;
  226         int function, error;
  227         hkey_fn_t *handler;
  228 
  229         sc = (struct acpi_panasonic_softc *)oidp->oid_arg1;
  230         function = oidp->oid_arg2;
  231         handler = sysctl_table[function].handler;
  232 
  233         /* Get the current value from the appropriate function. */
  234         ACPI_SERIAL_BEGIN(panasonic);
  235         error = handler(sc->handle, HKEY_GET, &arg);
  236         if (error != 0)
  237                 goto out;
  238 
  239         /* Send the current value to the user and return if no new value. */
  240         error = sysctl_handle_int(oidp, &arg, 0, req);
  241         if (error != 0 || req->newptr == NULL)
  242                 goto out;
  243 
  244         /* Set the new value via the appropriate function. */
  245         error = handler(sc->handle, HKEY_SET, &arg);
  246 
  247 out:
  248         ACPI_SERIAL_END(panasonic);
  249         return (error);
  250 }
  251 
  252 static ACPI_INTEGER
  253 acpi_panasonic_sinf(ACPI_HANDLE h, ACPI_INTEGER index)
  254 {
  255         ACPI_BUFFER buf;
  256         ACPI_OBJECT *res;
  257         ACPI_INTEGER ret;
  258 
  259         ACPI_SERIAL_ASSERT(panasonic);
  260         ret = -1;
  261         buf.Length = ACPI_ALLOCATE_BUFFER;
  262         buf.Pointer = NULL;
  263         AcpiEvaluateObject(h, "SINF", NULL, &buf);
  264         res = (ACPI_OBJECT *)buf.Pointer;
  265         if (res->Type == ACPI_TYPE_PACKAGE)
  266                 ret = res->Package.Elements[index].Integer.Value;
  267         AcpiOsFree(buf.Pointer);
  268 
  269         return (ret);
  270 }
  271 
  272 static void
  273 acpi_panasonic_sset(ACPI_HANDLE h, ACPI_INTEGER index, ACPI_INTEGER val)
  274 {
  275         ACPI_OBJECT_LIST args;
  276         ACPI_OBJECT obj[2];
  277 
  278         ACPI_SERIAL_ASSERT(panasonic);
  279         obj[0].Type = ACPI_TYPE_INTEGER;
  280         obj[0].Integer.Value = index;
  281         obj[1].Type = ACPI_TYPE_INTEGER;
  282         obj[1].Integer.Value = val;
  283         args.Count = 2;
  284         args.Pointer = obj;
  285         AcpiEvaluateObject(h, "SSET", &args, NULL);
  286 }
  287 
  288 static int
  289 hkey_lcd_brightness_max(ACPI_HANDLE h, int op, UINT32 *val)
  290 {
  291         int reg;
  292 
  293         ACPI_SERIAL_ASSERT(panasonic);
  294         reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
  295             HKEY_REG_LCD_BRIGHTNESS_MAX_AC : HKEY_REG_LCD_BRIGHTNESS_MAX_DC;
  296 
  297         switch (op) {
  298         case HKEY_SET:
  299                 return (EPERM);
  300                 break;
  301         case HKEY_GET:
  302                 *val = acpi_panasonic_sinf(h, reg);
  303                 break;
  304         }
  305 
  306         return (0);
  307 }
  308 
  309 static int
  310 hkey_lcd_brightness_min(ACPI_HANDLE h, int op, UINT32 *val)
  311 {
  312         int reg;
  313 
  314         ACPI_SERIAL_ASSERT(panasonic);
  315         reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
  316             HKEY_REG_LCD_BRIGHTNESS_MIN_AC : HKEY_REG_LCD_BRIGHTNESS_MIN_DC;
  317 
  318         switch (op) {
  319         case HKEY_SET:
  320                 return (EPERM);
  321                 break;
  322         case HKEY_GET:
  323                 *val = acpi_panasonic_sinf(h, reg);
  324                 break;
  325         }
  326 
  327         return (0);
  328 }
  329 
  330 static int
  331 hkey_lcd_brightness(ACPI_HANDLE h, int op, UINT32 *val)
  332 {
  333         int reg;
  334         UINT32 max, min;
  335 
  336         reg = (power_profile_get_state() == POWER_PROFILE_PERFORMANCE) ?
  337             HKEY_REG_LCD_BRIGHTNESS_AC : HKEY_REG_LCD_BRIGHTNESS_DC;
  338 
  339         ACPI_SERIAL_ASSERT(panasonic);
  340         switch (op) {
  341         case HKEY_SET:
  342                 hkey_lcd_brightness_max(h, HKEY_GET, &max);
  343                 hkey_lcd_brightness_min(h, HKEY_GET, &min);
  344                 if (*val < min || *val > max)
  345                         return (EINVAL);
  346                 acpi_panasonic_sset(h, reg, *val);
  347                 break;
  348         case HKEY_GET:
  349                 *val = acpi_panasonic_sinf(h, reg);
  350                 break;
  351         }
  352 
  353         return (0);
  354 }
  355 
  356 static int
  357 hkey_sound_mute(ACPI_HANDLE h, int op, UINT32 *val)
  358 {
  359 
  360         ACPI_SERIAL_ASSERT(panasonic);
  361         switch (op) {
  362         case HKEY_SET:
  363                 if (*val != 0 && *val != 1)
  364                         return (EINVAL);
  365                 acpi_panasonic_sset(h, HKEY_REG_SOUND_MUTE, *val);
  366                 break;
  367         case HKEY_GET:
  368                 *val = acpi_panasonic_sinf(h, HKEY_REG_SOUND_MUTE);
  369                 break;
  370         }
  371 
  372         return (0);
  373 }
  374 
  375 static int
  376 acpi_panasonic_hkey_event(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
  377     UINT32 *arg)
  378 {
  379         ACPI_BUFFER buf;
  380         ACPI_OBJECT *res;
  381         ACPI_INTEGER val;
  382         int status;
  383 
  384         ACPI_SERIAL_ASSERT(panasonic);
  385         status = ENXIO;
  386 
  387         buf.Length = ACPI_ALLOCATE_BUFFER;
  388         buf.Pointer = NULL;
  389         AcpiEvaluateObject(h, "HINF", NULL, &buf);
  390         res = (ACPI_OBJECT *)buf.Pointer;
  391         if (res->Type != ACPI_TYPE_INTEGER) {
  392                 device_printf(sc->dev, "HINF returned non-integer\n");
  393                 goto end;
  394         }
  395         val = res->Integer.Value;
  396 #ifdef ACPI_PANASONIC_DEBUG
  397         device_printf(sc->dev, "%s button Fn+F%d\n",
  398                       (val & 0x80) ? "Pressed" : "Released",
  399                       (int)(val & 0x7f));
  400 #endif
  401         if ((val & 0x7f) > 0 && (val & 0x7f) < 11) {
  402                 *arg = val;
  403                 status = 0;
  404         }
  405 end:
  406         if (buf.Pointer)
  407                 AcpiOsFree(buf.Pointer);
  408 
  409         return (status);
  410 }
  411 
  412 static void
  413 acpi_panasonic_hkey_action(struct acpi_panasonic_softc *sc, ACPI_HANDLE h,
  414     UINT32 key)
  415 {
  416         struct acpi_softc *acpi_sc;
  417         int arg, max, min;
  418 
  419         acpi_sc = acpi_device_get_parent_softc(sc->dev);
  420 
  421         ACPI_SERIAL_ASSERT(panasonic);
  422         switch (key) {
  423         case 1:
  424                 /* Decrease LCD brightness. */
  425                 hkey_lcd_brightness_max(h, HKEY_GET, &max);
  426                 hkey_lcd_brightness_min(h, HKEY_GET, &min);
  427                 hkey_lcd_brightness(h, HKEY_GET, &arg);
  428                 arg -= max / HKEY_LCD_BRIGHTNESS_DIV;
  429                 if (arg < min)
  430                         arg = min;
  431                 else if (arg > max)
  432                         arg = max;
  433                 hkey_lcd_brightness(h, HKEY_SET, &arg);
  434                 break;
  435         case 2:
  436                 /* Increase LCD brightness. */
  437                 hkey_lcd_brightness_max(h, HKEY_GET, &max);
  438                 hkey_lcd_brightness_min(h, HKEY_GET, &min);
  439                 hkey_lcd_brightness(h, HKEY_GET, &arg);
  440                 arg += max / HKEY_LCD_BRIGHTNESS_DIV;
  441                 if (arg < min)
  442                         arg = min;
  443                 else if (arg > max)
  444                         arg = max;
  445                 hkey_lcd_brightness(h, HKEY_SET, &arg);
  446                 break;
  447         case 4:
  448                 /* Toggle sound mute. */
  449                 hkey_sound_mute(h, HKEY_GET, &arg);
  450                 if (arg)
  451                         arg = 0;
  452                 else
  453                         arg = 1;
  454                 hkey_sound_mute(h, HKEY_SET, &arg);
  455                 break;
  456         case 7:
  457                 /* Suspend. */
  458                 acpi_event_sleep_button_sleep(acpi_sc);
  459                 break;
  460         }
  461 }
  462 
  463 static void
  464 acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify, void *context)
  465 {
  466         struct acpi_panasonic_softc *sc;
  467         UINT32 key;
  468 
  469         sc = (struct acpi_panasonic_softc *)context;
  470 
  471         switch (notify) {
  472         case 0x80:
  473                 ACPI_SERIAL_BEGIN(panasonic);
  474                 if (acpi_panasonic_hkey_event(sc, h, &key) == 0) {
  475                         acpi_panasonic_hkey_action(sc, h, key);
  476                         acpi_UserNotify("Panasonic", h, (uint8_t)key);
  477                 }
  478                 ACPI_SERIAL_END(panasonic);
  479                 break;
  480         default:
  481                 device_printf(sc->dev, "unknown notify: %#x\n", notify);
  482                 break;
  483         }
  484 }
  485 
  486 static void
  487 acpi_panasonic_power_profile(void *arg)
  488 {
  489         ACPI_HANDLE handle;
  490         UINT32 brightness;
  491 
  492         handle = (ACPI_HANDLE)arg;
  493 
  494         /* Reset current brightness according to new power state. */
  495         ACPI_SERIAL_BEGIN(panasonic);
  496         hkey_lcd_brightness(handle, HKEY_GET, &brightness);
  497         hkey_lcd_brightness(handle, HKEY_SET, &brightness);
  498         ACPI_SERIAL_END(panasonic);
  499 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/acpi_support/acpi_panasonic.c

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