1 /* $NetBSD: button.c,v 1.1 2018/04/09 20:07:22 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2009 Michael Lorenz
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: button.c,v 1.1 2018/04/09 20:07:22 christos Exp $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/device.h>
36 #include <sys/proc.h>
37 #include <sys/kthread.h>
38
39 #include <sys/bus.h>
40
41 #include <dev/sysmon/sysmonvar.h>
42 #include <dev/sysmon/sysmon_taskq.h>
43
44 #include <machine/autoconf.h>
45 #include <machine/machtype.h>
46
47 #include <sgimips/ioc/iocreg.h>
48 #include <sgimips/hpc/hpcvar.h>
49 #include <sgimips/hpc/hpcreg.h>
50
51 struct button_softc {
52 device_t sc_dev;
53 struct sysmon_pswitch sc_pbutton;
54 bus_space_tag_t sc_tag;
55 bus_space_handle_t sc_hreg;
56 int sc_last, sc_fired;
57 };
58
59 static int button_match(device_t, cfdata_t, void *);
60 static void button_attach(device_t, device_t, void *);
61
62 static int button_intr(void *);
63 static void button_powerbutton(void *);
64
65 CFATTACH_DECL_NEW(button, sizeof(struct button_softc),
66 button_match,
67 button_attach,
68 NULL,
69 NULL);
70
71 static int
button_match(device_t parent,cfdata_t match,void * aux)72 button_match(device_t parent, cfdata_t match, void *aux)
73 {
74 struct hpc_attach_args *ha = aux;
75
76 if (strcmp(ha->ha_name, match->cf_name) != 0)
77 return 0;
78
79 if (mach_type == MACH_SGI_IP22)
80 return 1;
81
82 return 0;
83 }
84
85 static void
button_attach(device_t parent,device_t self,void * aux)86 button_attach(device_t parent, device_t self, void *aux)
87 {
88 struct button_softc *sc;
89 struct hpc_attach_args *haa;
90
91 sc = device_private(self);
92 sc->sc_dev = self;
93 haa = aux;
94 sc->sc_tag = haa->ha_st;
95 sc->sc_fired = 0;
96
97 aprint_normal("\n");
98 if (bus_space_subregion(haa->ha_st, haa->ha_sh, haa->ha_devoff,
99 0x4, /* just a single register */
100 &sc->sc_hreg)) {
101 aprint_error(": unable to map button register\n");
102 return;
103 }
104
105 if ((cpu_intr_establish(haa->ha_irq, IPL_BIO,
106 button_intr, sc)) == NULL) {
107 printf(": unable to establish interrupt!\n");
108 return;
109 }
110
111 sc->sc_last = 0;
112
113 sysmon_task_queue_init();
114 memset(&sc->sc_pbutton, 0, sizeof(struct sysmon_pswitch));
115 sc->sc_pbutton.smpsw_name = device_xname(sc->sc_dev);
116 sc->sc_pbutton.smpsw_type = PSWITCH_TYPE_POWER;
117 if (sysmon_pswitch_register(&sc->sc_pbutton) != 0)
118 aprint_error_dev(sc->sc_dev,
119 "unable to register power button with sysmon\n");
120 pmf_device_register(self, NULL, NULL);
121 }
122
123 static int
button_intr(void * cookie)124 button_intr(void *cookie)
125 {
126 struct button_softc *sc = cookie;
127 uint8_t reg;
128
129 reg = bus_space_read_4(sc->sc_tag, sc->sc_hreg, 0);
130 bus_space_write_4(sc->sc_tag, sc->sc_hreg, 0,
131 IOC_PANEL_VDOWN_IRQ | IOC_PANEL_VUP_IRQ | IOC_PANEL_POWER_IRQ);
132 if ((reg & IOC_PANEL_POWER_IRQ) == 0) {
133 if (!sc->sc_fired)
134 sysmon_task_queue_sched(0, button_powerbutton, sc);
135 sc->sc_fired = 1;
136 }
137 if (time_second == sc->sc_last)
138 return 1;
139 sc->sc_last = time_second;
140 if ((reg & IOC_PANEL_VDOWN_HOLD) == 0)
141 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
142 if ((reg & IOC_PANEL_VUP_HOLD) == 0)
143 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
144
145 return 1;
146 }
147
148 static void
button_powerbutton(void * cookie)149 button_powerbutton(void *cookie)
150 {
151 struct button_softc *sc = cookie;
152
153 sysmon_pswitch_event(&sc->sc_pbutton, PSWITCH_EVENT_PRESSED);
154 }
155