/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
 * 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 as
 *    the first lines of this file unmodified.
 * 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 AUTHORS ``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 AUTHORS 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>
#include "opt_kbd.h"
#include "opt_evdev.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>

#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>

#include <sys/kbio.h>
#include <dev/kbd/kbdreg.h>
#include <dev/atkbdc/atkbdreg.h>
#include <dev/atkbdc/atkbdcreg.h>

typedef struct {
        struct resource *intr;
        void            *ih;
} atkbd_softc_t;

static void     atkbdidentify(driver_t *driver, device_t dev);
static int      atkbdprobe(device_t dev);
static int      atkbdattach(device_t dev);
static int      atkbdresume(device_t dev);
static void     atkbdintr(void *arg);

static device_method_t atkbd_methods[] = {
        DEVMETHOD(device_identify,      atkbdidentify),
        DEVMETHOD(device_probe,         atkbdprobe),
        DEVMETHOD(device_attach,        atkbdattach),
        DEVMETHOD(device_resume,        atkbdresume),
        DEVMETHOD_END
};

static driver_t atkbd_driver = {
        ATKBD_DRIVER_NAME,
        atkbd_methods,
        sizeof(atkbd_softc_t),
};

static void
atkbdidentify(driver_t *driver, device_t parent)
{

        /* always add at least one child */
        BUS_ADD_CHILD(parent, KBDC_RID_KBD, driver->name, device_get_unit(parent));
}

static int
atkbdprobe(device_t dev)
{
        struct resource *res;
        u_long irq;
        int flags;
        int rid;

        device_set_desc(dev, "AT Keyboard");

        /* obtain parameters */
        flags = device_get_flags(dev);

        /* see if IRQ is available */
        rid = KBDC_RID_KBD;
        res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
        if (res == NULL) {
                if (bootverbose)
                        device_printf(dev, "unable to allocate IRQ\n");
                return ENXIO;
        }
        irq = rman_get_start(res);
        bus_release_resource(dev, SYS_RES_IRQ, rid, res);

        /* probe the device */
        return atkbd_probe_unit(dev, irq, flags);
}

static int
atkbdattach(device_t dev)
{
        atkbd_softc_t *sc;
        keyboard_t *kbd;
        u_long irq;
        int flags;
        int rid;
        int error;

        sc = device_get_softc(dev);

        rid = KBDC_RID_KBD;
        irq = bus_get_resource_start(dev, SYS_RES_IRQ, rid);
        flags = device_get_flags(dev);
        error = atkbd_attach_unit(dev, &kbd, irq, flags);
        if (error)
                return error;

        /* declare our interrupt handler */
        sc->intr = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
        if (sc->intr == NULL)
                return ENXIO;
        error = bus_setup_intr(dev, sc->intr, INTR_TYPE_TTY, NULL, atkbdintr,
                               kbd, &sc->ih);
        if (error)
                bus_release_resource(dev, SYS_RES_IRQ, rid, sc->intr);

        return error;
}

static int
atkbdresume(device_t dev)
{
        atkbd_softc_t *sc;
        keyboard_t *kbd;
        int args[2];

        sc = device_get_softc(dev);
        kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
                                                 device_get_unit(dev)));
        if (kbd) {
                kbd->kb_flags &= ~KB_INITIALIZED;
                args[0] = device_get_unit(device_get_parent(dev));
                args[1] = rman_get_start(sc->intr);
                kbdd_init(kbd, device_get_unit(dev), &kbd, args,
                    device_get_flags(dev));
                kbdd_clear_state(kbd);
        }
        return 0;
}

static void
atkbdintr(void *arg)
{
        keyboard_t *kbd;

        kbd = (keyboard_t *)arg;
        kbdd_intr(kbd, NULL);
}

DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, 0, 0);
#ifdef EVDEV_SUPPORT
MODULE_DEPEND(atkbd, evdev, 1, 1, 1);
#endif