/*      $NetBSD: flipper.c,v 1.1 2012/11/08 18:30:21 rkujawa Exp $ */

/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Radoslaw Kujawa.
*
* 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.
*/

/* Driver for Individual Computers Delfina Flipper / Petsoff Delfina 1200.
*
* TODO:
* - linux-style /dev/dsp56k interface
* - audio
* - firmware
* - interrupts: caa->cp_intr_establish(dspintr, sc);
*/

#include <sys/cdefs.h>

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

#include <sys/bus.h>

#include <amiga/clockport/clockportvar.h>

#include <amiga/clockport/flipperreg.h>
#include <amiga/clockport/flippervar.h>

#define FLIPPER_DEBUG 1

static int flipper_probe(device_t, cfdata_t , void *);
static void flipper_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(flipper, sizeof(struct flipper_softc),
   flipper_probe, flipper_attach, NULL, NULL);

static int
flipper_probe(device_t parent, cfdata_t cf, void *aux)
{
       struct clockport_attach_args *caa = aux;
       uint8_t delfinaver;
       bus_space_handle_t ioh;

       bus_space_map(caa->cp_iot, 0, FLIPPER_REGSIZE, 0, &ioh);

       delfinaver = bus_space_read_1(caa->cp_iot, ioh, FLIPPER_HOSTCTL);
#ifdef FLIPPER_DEBUG
       aprint_normal("flipper: hostctl probe read %x\n", delfinaver);
#endif /* FLIPPER_DEBUG */

       bus_space_unmap(caa->cp_iot, ioh, FLIPPER_REGSIZE);

       if ((delfinaver == 0xB5) || (delfinaver == 0xB6))
               return 1;

       return 0;
}

static void
flipper_attach(device_t parent, device_t self, void *aux)
{
       struct flipper_softc *sc = device_private(self);
       struct clockport_attach_args *caa = aux;
       sc->sc_dev = self;
       sc->sc_iot = caa->cp_iot;

       if (bus_space_map(sc->sc_iot, 0, FLIPPER_REGSIZE, 0, &sc->sc_ioh)) {
               aprint_normal("can't map the bus space\n");
               return;
       }

       sc->sc_delfinaver = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
           FLIPPER_HOSTCTL);

       switch (sc->sc_delfinaver) {
       case DELFINA_FLIPPER:
               aprint_normal(": Individual Computers Delfina Flipper\n");
               break;
       case DELFINA_1200:
               aprint_normal(": Petsoff Delfina 1200\n");
               break;
       default:
               aprint_normal(": unknown model\n");
               return;
       }

       /* reset the board */
       bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
           FLIPPER_HOSTCTL_RESET | FLIPPER_HOSTCTL_IRQDIS);
       delay(10000);
       bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
           FLIPPER_HOSTCTL_IRQDIS); /* leave interrupts disabled for now */

       /* attach dsp56k, audio, etc. */
}