/*      $NetBSD: adb_bt.c,v 1.10 2025/06/16 08:00:50 macallan Exp $ */

/*-
* Copyright (c) 2006 Michael Lorenz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: adb_bt.c,v 1.10 2025/06/16 08:00:50 macallan Exp $");

#include <sys/param.h>
#include <sys/device.h>

#include <machine/autoconf.h>

#include <dev/adb/adbvar.h>

#include "ioconf.h"

#include "opt_wsdisplay_compat.h"
#include "adbdebug.h"

#ifdef ADBBT_DEBUG
#define DPRINTF printf
#else
#define DPRINTF while (0) printf
#endif

#define BT_VOL_UP       0x06
#define BT_VOL_DOWN     0x07
#define BT_VOL_MUTE     0x08
#define BT_BRT_UP       0x09
#define BT_BRT_DOWN     0x0a
#define BT_EJECT        0x0b
#define BT_F7           0x0c
#define BT_NUMLOCK      0x7f

static int adbbt_match(device_t, cfdata_t, void *);
static void adbbt_attach(device_t, device_t, void *);

struct adbbt_softc {
       device_t sc_dev;
       struct adb_device *sc_adbdev;
       struct adb_bus_accessops *sc_ops;
       uint8_t sc_us;
};

/* Driver definition. */
CFATTACH_DECL_NEW(adbbt, sizeof(struct adbbt_softc),
   adbbt_match, adbbt_attach, NULL, NULL);

static void adbbt_handler(void *, int, uint8_t *);

static int
adbbt_match(device_t parent, cfdata_t cf, void *aux)
{
       struct adb_attach_args *aaa = aux;

       if ((aaa->dev->original_addr == ADBADDR_MISC) &&
           (aaa->dev->handler_id == 0x1f))
               return 100;
       else
               return 0;
}

static void
adbbt_attach(device_t parent, device_t self, void *aux)
{
       struct adbbt_softc *sc = device_private(self);
       struct adb_attach_args *aaa = aux;

       sc->sc_dev = self;
       sc->sc_ops = aaa->ops;
       sc->sc_adbdev = aaa->dev;
       sc->sc_adbdev->cookie = sc;
       sc->sc_adbdev->handler = adbbt_handler;
       sc->sc_us = ADBTALK(sc->sc_adbdev->current_addr, 0);

       printf(" addr %d: button device\n", sc->sc_adbdev->current_addr);
}

static void
adbbt_handler(void *cookie, int len, uint8_t *data)
{
       /* struct adbbt_softc *sc = cookie; */
       uint8_t k, scancode;

#ifdef ADBBT_DEBUG
       struct adbbt_softc *sc = cookie;
       int i;
       printf("%s: %02x - ", device_xname(sc->sc_dev), sc->sc_us);
       for (i = 0; i < len; i++) {
               printf(" %02x", data[i]);
       }
       printf("\n");
#endif
       k = data[2];
       scancode = ADBK_KEYVAL(k);
       if ((scancode < 6) || (scancode > 0x0c))
               return;

       if (ADBK_PRESS(k)) {

               switch (scancode) {
                       case BT_VOL_UP:
                               pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
                               break;
                       case BT_VOL_DOWN:
                               pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
                               break;
                       case BT_VOL_MUTE:
                               pmf_event_inject(NULL,
                                   PMFE_AUDIO_VOLUME_TOGGLE);
                               break;
                       case BT_BRT_UP:
                               pmf_event_inject(NULL,
                                   PMFE_DISPLAY_BRIGHTNESS_UP);
                               break;
                       case BT_BRT_DOWN:
                               pmf_event_inject(NULL,
                                   PMFE_DISPLAY_BRIGHTNESS_DOWN);
                               break;
               }
       }
}