nappi_nr.c revision 1.5 
1/* $NetBSD: nappi_nr.c,v 1.5 2003/03/25 06:53:16 igy Exp $ */
2
3/*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Ichiro FUKUHARA and Naoto Shimazaki.
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 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: nappi_nr.c,v 1.5 2003/03/25 06:53:16 igy Exp $");
41
42/*
43 * LED support for NAPPI.
44 */
45
46#include <sys/param.h>
47#include <sys/types.h>
48#include <sys/callout.h>
49#include <sys/device.h>
50#include <sys/kernel.h>
51#include <sys/systm.h>
52
53#include <machine/bus.h>
54
55#include <arm/ixp12x0/ixpsipvar.h>
56
57static int	nappinr_match(struct device *, struct cfdata *, void *);
58static void	nappinr_attach(struct device *, struct device *, void *);
59#if 0
60static int	nappinr_activate(struct device *, enum devact);
61#endif
62static void	nappinr_callout(void *);
63
64struct nappinr_softc {
65	struct device		sc_dev;
66	bus_space_tag_t		sc_iot;
67	bus_space_handle_t	sc_ioh;
68	bus_addr_t		sc_baseaddr;
69	bus_space_handle_t	sc_pos;
70	struct callout		sc_co;
71};
72
73CFATTACH_DECL(nappinr, sizeof(struct nappinr_softc),
74    nappinr_match, nappinr_attach, NULL, NULL);
75
76static int
77nappinr_match(struct device *parent, struct cfdata *match, void *aux)
78{
79	return (1);
80}
81
82static void
83nappinr_attach(struct device *parent, struct device *self, void *aux)
84{
85	struct nappinr_softc*		sc = (struct nappinr_softc*) self;
86	struct ixpsip_attach_args*	sa = aux;
87
88	printf("\n");
89
90  	sc->sc_iot = sa->sa_iot;
91  	sc->sc_baseaddr = sa->sa_addr;
92
93	if(bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0,
94			 &sc->sc_ioh)) {
95		printf("%s: unable to map registers\n", self->dv_xname);
96		return;
97	}
98
99	callout_init(&sc->sc_co);
100	callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
101}
102
103#if 0
104static int
105nappinr_activate(struct device *self, enum devact act)
106{
107	printf("nappinr_activate act=%d\n", act);
108	return 0;
109}
110#endif
111
112static void
113nappinr_callout(void *arg)
114{
115	static const int	ptn[] = { 1, 2, 4, 8, 4, 2 };
116	struct nappinr_softc*	sc = arg;
117
118	bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0,
119			  ptn[sc->sc_pos++ % 6] | ptn[sc->sc_pos++ % 6]<< 4);
120	callout_reset(&sc->sc_co, hz / 10, nappinr_callout, sc);
121}
122