/*      $OpenBSD: abtn.c,v 1.18 2022/03/13 12:33:01 mpi Exp $   */
/*      $NetBSD: abtn.c,v 1.1 1999/07/12 17:48:26 tsubai Exp $  */

/*-
 * Copyright (c) 2002, Miodrag Vallat.
 * Copyright (C) 1999 Tsubai Masanari.  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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/task.h>

#include <machine/bus.h>

#include <dev/ofw/openfirm.h>
#include <macppc/macppc/ofw_machdep.h>

#include <dev/adb/adb.h>

#include "audio.h"
#include "cd.h"
#include "wskbd.h"

#define ABTN_HANDLER_ID 31

struct abtn_softc {
        struct device sc_dev;

        int origaddr;           /* ADB device type */
        int adbaddr;            /* current ADB address */
        int handler_id;
};

int abtn_match(struct device *, void *, void *);
void abtn_attach(struct device *, struct device *, void *);
void abtn_adbcomplete(caddr_t, caddr_t, int);

#if NWSKBD > 0 
extern int cd_eject(void);
#if NAUDIO > 0
extern int wskbd_set_mixervolume(long, long);
#endif
#endif

const struct cfattach abtn_ca = {
        sizeof(struct abtn_softc), abtn_match, abtn_attach
};
struct cfdriver abtn_cd = {
        NULL, "abtn", DV_DULL
};

struct task eject_task =
    TASK_INITIALIZER((void (*)(void *))cd_eject, NULL);

int
abtn_match(struct device *parent, void *cf, void *aux)
{
        struct adb_attach_args *aa = aux;

        if (strcmp(aa->name, adb_device_name) != 0)
                return (0);

        if (aa->origaddr == ADBADDR_MISC &&
            aa->handler_id == ABTN_HANDLER_ID)
                return 1;

        return 0;
}

void
abtn_attach(struct device *parent, struct device *self, void *aux)
{
        struct abtn_softc *sc = (struct abtn_softc *)self;
        struct adb_attach_args *aa = aux;
        ADBSetInfoBlock adbinfo;

        printf(": brightness/volume/eject buttons\n");

        sc->origaddr = aa->origaddr;
        sc->adbaddr = aa->adbaddr;
        sc->handler_id = aa->handler_id;

        adbinfo.siServiceRtPtr = (Ptr)abtn_adbcomplete;
        adbinfo.siDataAreaAddr = (caddr_t)sc;

        set_adb_info(&adbinfo, sc->adbaddr);
}

void
abtn_adbcomplete(caddr_t buffer, caddr_t data, int adb_command)
{
        u_int cmd, brightness;

        cmd = buffer[1];

        switch (cmd) {
        case 0x0a:      /* decrease brightness */
                brightness = cons_brightness;
                if (brightness == MAX_BRIGHTNESS)
                        brightness++;           /* get round values */
                brightness -= STEP_BRIGHTNESS;
                of_setbrightness(brightness);
                break;

        case 0x09:      /* increase brightness */
                brightness = cons_brightness + STEP_BRIGHTNESS;
                of_setbrightness(brightness);
                break;

#if NAUDIO > 0 && NWSKBD > 0
        case 0x08:      /* mute */
        case 0x01:      /* mute, AV hardware */
                wskbd_set_mixervolume(0, 1);
                break;
        case 0x07:      /* decrease volume */
        case 0x02:      /* decrease volume, AV hardware */
                wskbd_set_mixervolume(-1, 1);
                break;
        case 0x06:      /* increase volume */
        case 0x03:      /* increase volume, AV hardware */
                wskbd_set_mixervolume(1, 1);
                break;
#endif
        case 0x0c:      /* mirror display key */
                /* Need callback to do something with this */
                break;
#if NWSKBD > 0 && NCD > 0
        case 0x0b:      /* eject tray */
                task_add(systq, &eject_task);
                break;
#endif
        case 0x7f:      /* numlock */
                /* Need callback to do something with this */
                break;

        default:
#ifdef DEBUG
                if ((cmd & ~0x7f) == 0)
                        printf("unknown ADB button 0x%x\n", cmd);
#endif
                break;
        }
}