Annotation of sys/arch/landisk/dev/power.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: power.c,v 1.4 2007/06/15 18:17:25 miod Exp $ */
2:
3: /*
4: * Copyright (c) 2007 Martin Reindl.
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20: #include <sys/param.h>
21: #include <sys/systm.h>
22: #include <sys/kernel.h>
23: #include <sys/device.h>
24: #include <sys/conf.h>
25: #include <sys/proc.h>
26: #include <sys/signalvar.h>
27:
28: #include <machine/bus.h>
29: #include <machine/autoconf.h>
30:
31: #include <sh/include/devreg.h>
32:
33: #include <landisk/landisk/landiskreg.h>
34: #include <landisk/dev/obiovar.h>
35:
36: struct power_softc {
37: struct device sc_dev;
38: void *sc_ih;
39: };
40:
41: int power_match(struct device *, void *, void *);
42: void power_attach(struct device *, struct device *, void *);
43: int power_intr(void *aux);
44:
45: struct cfattach power_ca = {
46: sizeof(struct power_softc),
47: power_match,
48: power_attach
49: };
50:
51: struct cfdriver power_cd = {
52: NULL, "power", DV_DULL
53: };
54:
55: struct power_softc *power_softc;
56:
57: int
58: power_match(struct device *parent, void *match, void *aux)
59: {
60: struct obio_attach_args *oa = aux;
61: static struct obio_irq power_match_irq;
62:
63: oa->oa_nio = 0;
64: oa->oa_niomem = 0;
65: if (oa->oa_nirq == 0)
66: oa->oa_irq = &power_match_irq;
67: oa->oa_nirq = 1;
68: oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW;
69:
70: return (1);
71: }
72:
73: void
74: power_attach(struct device *parent, struct device *self, void *aux)
75: {
76: struct power_softc *sc = (void *)self;
77:
78: power_softc = sc;
79:
80: sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY,
81: power_intr, sc, sc->sc_dev.dv_xname);
82: if (sc->sc_ih == NULL) {
83: printf(": couldn't map interrupt\n");
84: return;
85: }
86:
87: printf("\n");
88: }
89:
90: int
91: power_intr(void *arg)
92: {
93: extern int kbd_reset;
94: int status;
95:
96: status = (int8_t)_reg_read_1(LANDISK_BTNSTAT);
97: if (status == -1) {
98: return (0);
99: }
100:
101: status = ~status;
102: if (status & BTN_POWER_BIT) {
103: #ifdef DEBUG
104: printf("%s switched\n", sc->sc_dev.dv_xname);
105: Debugger();
106: #endif
107: _reg_write_1(LANDISK_PWRSW_INTCLR, 1);
108: if (kbd_reset == 1) {
109: kbd_reset = 0;
110: psignal(initproc, SIGUSR1);
111: }
112: return (1);
113: }
114: return (0);
115: }
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