1 /* $NetBSD: nbppm.c,v 1.1 2011/08/06 03:53:40 kiyohara Exp $ */
2 /*
3 * Copyright (c) 2011 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: nbppm.c,v 1.1 2011/08/06 03:53:40 kiyohara Exp $");
29
30 #include <sys/param.h>
31 #include <sys/device.h>
32 #include <sys/errno.h>
33
34 #include <machine/config_hook.h>
35
36 #include <arm/xscale/pxa2x0_gpio.h>
37
38 #include <hpcarm/dev/nbppconvar.h>
39
40 #include "locators.h"
41
42 struct nbppm_softc {
43 device_t sc_dev;
44 device_t sc_parent;
45 int sc_tag;
46 };
47
48 static int nbppm_match(device_t, cfdata_t, void *);
49 static void nbppm_attach(device_t, device_t, void *);
50
51 static int nbppm_critical_intr(void *);
52 static int nbppm_suspend_intr(void *);
53
54 CFATTACH_DECL_NEW(nbppm, sizeof(struct nbppm_softc),
55 nbppm_match, nbppm_attach, NULL, NULL);
56
57
58 /* ARGSUSED */
59 static int
nbppm_match(device_t parent,cfdata_t match,void * aux)60 nbppm_match(device_t parent, cfdata_t match, void *aux)
61 {
62 struct nbppcon_attach_args *pcon = aux;
63
64 if (strcmp(pcon->aa_name, match->cf_name) ||
65 pcon->aa_tag == NBPPCONCF_TAG_DEFAULT)
66 return 0;
67
68 return 1;
69 }
70
71 static void
nbppm_attach(device_t parent,device_t self,void * aux)72 nbppm_attach(device_t parent, device_t self, void *aux)
73 {
74 struct nbppm_softc *sc = device_private(self);
75 struct nbppcon_attach_args *pcon = aux;
76
77 aprint_naive("\n");
78 aprint_normal("\n");
79
80 sc->sc_dev = self;
81 sc->sc_parent = parent;
82 sc->sc_tag = pcon->aa_tag;
83
84 /* GPIO 0 is Critical Suspend */
85 pxa2x0_gpio_set_function(0, GPIO_IN);
86 if (pxa2x0_gpio_intr_establish(0, IST_EDGE_RISING, IPL_HIGH,
87 nbppm_critical_intr, sc) == NULL)
88 aprint_error_dev(self,
89 "unable to establish critical interrupt\n");
90
91 /* GPIO 1 is Suspend */
92 pxa2x0_gpio_set_function(1, GPIO_IN);
93 if (pxa2x0_gpio_intr_establish(1, IST_EDGE_BOTH, IPL_HIGH,
94 nbppm_suspend_intr, sc) == NULL)
95 aprint_error_dev(self,
96 "unable to establish suspend interrupt\n");
97
98 return;
99 }
100
101 static int
nbppm_critical_intr(void * arg)102 nbppm_critical_intr(void *arg)
103 {
104 struct nbppm_softc *sc = arg;
105
106 aprint_normal_dev(sc->sc_dev, "Battery Low\n");
107 return 0;
108 }
109
110 static int
nbppm_suspend_intr(void * arg)111 nbppm_suspend_intr(void *arg)
112 {
113 struct nbppm_softc *sc = arg;
114
115 aprint_verbose_dev(sc->sc_dev, "lid closed\n");
116
117 return 0;
118 }
119