xref: /netbsd-src/sys/arch/amiga/clockport/flipper.c (revision b57caf8fee905cb31c320f4cbb342019a08b9c8c)
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
flipper_probe(device_t parent,cfdata_t cf,void * aux)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
flipper_attach(device_t parent,device_t self,void * aux)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