/*      $NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $    */

/*-
* Copyright (c) 1995 Jean-Marc Zucconi
* All rights reserved.
*
* Ported to NetBSD by Matthieu Herrb <[email protected]>.  Additional
* modification by Jason R. Thorpe <[email protected]>.
*
* 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
*    in this position and unchanged.
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $");

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

#include <sys/bus.h>

#include <dev/isa/isavar.h>

#include <dev/ic/joyvar.h>

#define JOY_NPORTS    1

struct joy_isa_softc {
       struct joy_softc        sc_joy;
       kmutex_t                sc_lock;
};

static int      joy_isa_probe(device_t, cfdata_t, void *);
static void     joy_isa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(joy_isa, sizeof(struct joy_isa_softc),
   joy_isa_probe, joy_isa_attach, NULL, NULL);

static int
joy_isa_probe(device_t parent, cfdata_t match, void *aux)
{
       struct isa_attach_args *ia = aux;
       bus_space_tag_t iot = ia->ia_iot;
       bus_space_handle_t ioh;
       int rval = 0;

       if (ia->ia_nio < 1)
               return 0;

       if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
               return 0;

       if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh))
               return 0;

#ifdef WANT_JOYSTICK_CONNECTED
       bus_space_write_1(iot, ioh, 0, 0xff);
       DELAY(10000);           /* 10 ms delay */
       if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f)
               rval = 1;
#else
       rval = 1;
#endif

       bus_space_unmap(iot, ioh, JOY_NPORTS);

       if (rval) {
               ia->ia_nio = 1;
               ia->ia_io[0].ir_size = JOY_NPORTS;

               ia->ia_niomem = 0;
               ia->ia_nirq = 0;
               ia->ia_ndrq = 0;
       }
       return rval;
}

static void
joy_isa_attach(device_t parent, device_t self, void *aux)
{
       struct joy_isa_softc *isc = device_private(self);
       struct joy_softc *sc = &isc->sc_joy;
       struct isa_attach_args *ia = aux;

       aprint_normal("\n");

       sc->sc_iot = ia->ia_iot;
       sc->sc_dev = self;

       if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0,
           &sc->sc_ioh)) {
               aprint_error_dev(self, "can't map i/o space\n");
               return;
       }

       mutex_init(&isc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
       sc->sc_lock = &isc->sc_lock;

       joyattach(sc);
}