pwrsw_obio.c revision 1.1 
1/*	$NetBSD: pwrsw_obio.c,v 1.1 2006/09/01 21:26:18 uwe Exp $	*/
2
3/*-
4 * Copyright (c) 2005 NONAKA Kimihiro
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "btn_obio.h"
30
31#include <sys/cdefs.h>
32__KERNEL_RCSID(0, "$NetBSD: pwrsw_obio.c,v 1.1 2006/09/01 21:26:18 uwe Exp $");
33
34#include <sys/types.h>
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38#include <sys/malloc.h>
39#include <sys/conf.h>
40#include <sys/ioctl.h>
41
42#include <dev/sysmon/sysmonvar.h>
43#include <dev/sysmon/sysmon_taskq.h>
44
45#include <sh3/devreg.h>
46
47#include <landisk/landisk/landiskreg.h>
48#include <landisk/dev/obiovar.h>
49
50struct pwrsw_obio_softc {
51	struct device		sc_dev;
52	void			*sc_ih;
53
54	struct sysmon_pswitch	sc_smpsw; /* our sysmon glue */
55
56	int			sc_flags;
57#define	SYSMON_ATTACHED	1
58};
59
60static int pwrsw_obio_probe(struct device *, struct cfdata *, void *);
61static void pwrsw_obio_attach(struct device *, struct device *, void *);
62
63static int pwrsw_intr(void *aux);
64static void pwrsw_pressed_event(void *arg);
65
66CFATTACH_DECL(pwrsw_obio, sizeof(struct pwrsw_obio_softc),
67    pwrsw_obio_probe, pwrsw_obio_attach, NULL, NULL);
68
69static struct pwrsw_obio_softc *pwrsw_softc;
70
71static int
72pwrsw_obio_probe(struct device *parent, struct cfdata *cfp, void *aux)
73{
74	struct obio_attach_args *oa = aux;
75
76	if (pwrsw_softc)
77		return (0);
78
79	oa->oa_nio = 0;
80	oa->oa_niomem = 0;
81	oa->oa_nirq = 1;
82	oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW;
83
84	return (1);
85}
86
87static void
88pwrsw_obio_attach(struct device *parent, struct device *self, void *aux)
89{
90	struct pwrsw_obio_softc *sc = (void *)self;
91
92	printf(": Power Switch\n");
93
94	pwrsw_softc = sc;
95
96	sc->sc_smpsw.smpsw_name = sc->sc_dev.dv_xname;
97	sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER;
98
99	sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY,
100	    pwrsw_intr, sc);
101	if (sc->sc_ih == NULL) {
102		printf("%s: couldn't establish intr handler",
103		    sc->sc_dev.dv_xname);
104		panic("extintr_establish");
105	}
106
107	if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) {
108		printf("%s: unable to register with sysmon\n",
109		    sc->sc_dev.dv_xname);
110		return;
111	}
112	sc->sc_flags |= SYSMON_ATTACHED;
113}
114
115static int
116pwrsw_intr(void *arg)
117{
118	struct pwrsw_obio_softc *sc = (void *)arg;
119	int status;
120
121	status = (int8_t)_reg_read_1(LANDISK_BTNSTAT);
122	if (status == -1) {
123		return (0);
124	}
125
126	status = ~status;
127	if (status & BTN_POWER_BIT) {
128		if (sc->sc_flags & SYSMON_ATTACHED) {
129			sysmon_task_queue_sched(0, pwrsw_pressed_event, sc);
130			extintr_disable(sc->sc_ih);
131#if NBTN_OBIO > 0
132			extintr_disable_by_num(LANDISK_INTR_BTN);
133#endif
134		} else {
135			printf("%s: pressed\n", sc->sc_dev.dv_xname);
136		}
137		_reg_write_1(LANDISK_PWRSW_INTCLR, 1);
138		return (1);
139	}
140	return (0);
141}
142
143static void
144pwrsw_pressed_event(void *arg)
145{
146	struct pwrsw_obio_softc *sc = (void *)arg;
147
148	sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED);
149}
150