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      1 /*      $NetBSD: flipper.c,v 1.1 2012/11/08 18:30:21 rkujawa Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /* Driver for Individual Computers Delfina Flipper / Petsoff Delfina 1200.
     33  *
     34  * TODO:
     35  * - linux-style /dev/dsp56k interface
     36  * - audio
     37  * - firmware
     38  * - interrupts: caa->cp_intr_establish(dspintr, sc);
     39  */
     40 
     41 #include <sys/cdefs.h>
     42 
     43 #include <sys/param.h>
     44 #include <sys/device.h>
     45 
     46 #include <sys/bus.h>
     47 
     48 #include <amiga/clockport/clockportvar.h>
     49 
     50 #include <amiga/clockport/flipperreg.h>
     51 #include <amiga/clockport/flippervar.h>
     52 
     53 #define FLIPPER_DEBUG 1
     54 
     55 static int flipper_probe(device_t, cfdata_t , void *);
     56 static void flipper_attach(device_t, device_t, void *);
     57 
     58 CFATTACH_DECL_NEW(flipper, sizeof(struct flipper_softc),
     59     flipper_probe, flipper_attach, NULL, NULL);
     60 
     61 static int
     62 flipper_probe(device_t parent, cfdata_t cf, void *aux)
     63 {
     64 	struct clockport_attach_args *caa = aux;
     65 	uint8_t delfinaver;
     66 	bus_space_handle_t ioh;
     67 
     68 	bus_space_map(caa->cp_iot, 0, FLIPPER_REGSIZE, 0, &ioh);
     69 
     70 	delfinaver = bus_space_read_1(caa->cp_iot, ioh, FLIPPER_HOSTCTL);
     71 #ifdef FLIPPER_DEBUG
     72 	aprint_normal("flipper: hostctl probe read %x\n", delfinaver);
     73 #endif /* FLIPPER_DEBUG */
     74 
     75 	bus_space_unmap(caa->cp_iot, ioh, FLIPPER_REGSIZE);
     76 
     77 	if ((delfinaver == 0xB5) || (delfinaver == 0xB6))
     78 		return 1;
     79 
     80 	return 0;
     81 }
     82 
     83 static void
     84 flipper_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	struct flipper_softc *sc = device_private(self);
     87 	struct clockport_attach_args *caa = aux;
     88 	sc->sc_dev = self;
     89 	sc->sc_iot = caa->cp_iot;
     90 
     91 	if (bus_space_map(sc->sc_iot, 0, FLIPPER_REGSIZE, 0, &sc->sc_ioh)) {
     92 		aprint_normal("can't map the bus space\n");
     93 		return;
     94 	}
     95 
     96 	sc->sc_delfinaver = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
     97 	    FLIPPER_HOSTCTL);
     98 
     99 	switch (sc->sc_delfinaver) {
    100 	case DELFINA_FLIPPER:
    101 		aprint_normal(": Individual Computers Delfina Flipper\n");
    102 		break;
    103 	case DELFINA_1200:
    104 		aprint_normal(": Petsoff Delfina 1200\n");
    105 		break;
    106 	default:
    107 		aprint_normal(": unknown model\n");
    108 		return;
    109 	}
    110 
    111 	/* reset the board */
    112 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
    113 	    FLIPPER_HOSTCTL_RESET | FLIPPER_HOSTCTL_IRQDIS);
    114 	delay(10000);
    115 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
    116 	    FLIPPER_HOSTCTL_IRQDIS); /* leave interrupts disabled for now */
    117 
    118 	/* attach dsp56k, audio, etc. */
    119 }
    120 
    121