1 /* $NetBSD: pwrsw_obio.c,v 1.4 2023/12/20 15:00:08 thorpej Exp $ */
2
3 /*-
4 * Copyright (C) 2005 NONAKA Kimihiro <nonaka@netbsd.org>
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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "btn_obio.h"
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: pwrsw_obio.c,v 1.4 2023/12/20 15:00:08 thorpej Exp $");
32
33 #include <sys/types.h>
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/device.h>
37 #include <sys/conf.h>
38 #include <sys/ioctl.h>
39
40 #include <dev/sysmon/sysmonvar.h>
41 #include <dev/sysmon/sysmon_taskq.h>
42
43 #include <sh3/devreg.h>
44
45 #include <landisk/landisk/landiskreg.h>
46 #include <landisk/dev/obiovar.h>
47
48 struct pwrsw_obio_softc {
49 device_t sc_dev;
50 void *sc_ih;
51
52 struct sysmon_pswitch sc_smpsw; /* our sysmon glue */
53
54 int sc_flags;
55 #define SYSMON_ATTACHED 1
56 };
57
58 static int pwrsw_obio_probe(device_t, cfdata_t, void *);
59 static void pwrsw_obio_attach(device_t, device_t, void *);
60
61 static int pwrsw_intr(void *aux);
62 static void pwrsw_pressed_event(void *arg);
63
64 CFATTACH_DECL_NEW(pwrsw_obio, sizeof(struct pwrsw_obio_softc),
65 pwrsw_obio_probe, pwrsw_obio_attach, NULL, NULL);
66
67 static struct pwrsw_obio_softc *pwrsw_softc;
68
69 static int
pwrsw_obio_probe(device_t parent,cfdata_t cfp,void * aux)70 pwrsw_obio_probe(device_t parent, cfdata_t cfp, void *aux)
71 {
72 struct obio_attach_args *oa = aux;
73
74 if (pwrsw_softc)
75 return (0);
76
77 oa->oa_nio = 0;
78 oa->oa_niomem = 0;
79 oa->oa_nirq = 1;
80 oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW;
81
82 return (1);
83 }
84
85 static void
pwrsw_obio_attach(device_t parent,device_t self,void * aux)86 pwrsw_obio_attach(device_t parent, device_t self, void *aux)
87 {
88 struct pwrsw_obio_softc *sc;
89
90 aprint_naive("\n");
91 aprint_normal(": Power Switch\n");
92
93 sc = device_private(self);
94 sc->sc_dev = self;
95
96 pwrsw_softc = sc;
97
98 sc->sc_smpsw.smpsw_name = device_xname(self);
99 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER;
100
101 sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY,
102 pwrsw_intr, sc);
103 if (sc->sc_ih == NULL) {
104 aprint_error_dev(self, "unable to establish interrupt");
105 panic("extintr_establish");
106 }
107
108 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) {
109 aprint_error_dev(self, "unable to register with sysmon\n");
110 return;
111 }
112 sc->sc_flags |= SYSMON_ATTACHED;
113 }
114
115 static int
pwrsw_intr(void * arg)116 pwrsw_intr(void *arg)
117 {
118 struct pwrsw_obio_softc *sc = 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 aprint_normal_dev(sc->sc_dev, "pressed\n");
136 }
137 _reg_write_1(LANDISK_PWRSW_INTCLR, 1);
138 return (1);
139 }
140 return (0);
141 }
142
143 static void
pwrsw_pressed_event(void * arg)144 pwrsw_pressed_event(void *arg)
145 {
146 struct pwrsw_obio_softc *sc = arg;
147
148 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED);
149 }
150