flipper.c revision 1.1 
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
55static int flipper_probe(device_t, cfdata_t , void *);
56static void flipper_attach(device_t, device_t, void *);
57
58CFATTACH_DECL_NEW(flipper, sizeof(struct flipper_softc),
59    flipper_probe, flipper_attach, NULL, NULL);
60
61static int
62flipper_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
83static void
84flipper_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