1/*-
2 * Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
| 1/*-
2 * Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
|
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
| 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
|
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bio.h>
32#include <sys/bus.h>
33#include <sys/conf.h>
34#include <sys/kernel.h>
35#include <sys/kthread.h>
36#include <sys/lock.h>
37#include <sys/malloc.h>
38#include <sys/module.h>
39#include <sys/mutex.h>
40
41#include <dev/led/led.h>
42#include <sys/gpio.h>
43#include "gpiobus_if.h"
44
45/*
46 * Only one pin for led
47 */
48#define GPIOLED_PIN 0
49
50#define GPIOLED_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
51#define GPIOLED_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
52#define GPIOLED_LOCK_INIT(_sc) \
53 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
54 "gpioled", MTX_DEF)
55#define GPIOLED_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
56
57struct gpioled_softc
58{
59 device_t sc_dev;
60 device_t sc_busdev;
61 struct mtx sc_mtx;
62 struct cdev *sc_leddev;
63};
64
65static void gpioled_control(void *, int);
66static int gpioled_probe(device_t);
67static int gpioled_attach(device_t);
68static int gpioled_detach(device_t);
69
70static void
71gpioled_control(void *priv, int onoff)
72{
73 struct gpioled_softc *sc = priv;
74 GPIOLED_LOCK(sc);
75 GPIOBUS_LOCK_BUS(sc->sc_busdev);
76 GPIOBUS_ACQUIRE_BUS(sc->sc_busdev, sc->sc_dev);
77 GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, GPIOLED_PIN,
78 onoff ? GPIO_PIN_HIGH : GPIO_PIN_LOW);
79 GPIOBUS_RELEASE_BUS(sc->sc_busdev, sc->sc_dev);
80 GPIOBUS_UNLOCK_BUS(sc->sc_busdev);
81 GPIOLED_UNLOCK(sc);
82}
83
84static int
85gpioled_probe(device_t dev)
86{
87 device_set_desc(dev, "GPIO led");
88 return (0);
89}
90
91static int
92gpioled_attach(device_t dev)
93{
94 struct gpioled_softc *sc;
95 const char *name;
96
97 sc = device_get_softc(dev);
98 sc->sc_dev = dev;
99 sc->sc_busdev = device_get_parent(dev);
100 GPIOLED_LOCK_INIT(sc);
101 if (resource_string_value(device_get_name(dev),
102 device_get_unit(dev), "name", &name))
103 name = NULL;
104
105 sc->sc_leddev = led_create(gpioled_control, sc, name ? name :
106 device_get_nameunit(dev));
107
108 return (0);
109}
110
111static int
112gpioled_detach(device_t dev)
113{
114 struct gpioled_softc *sc;
115
116 sc = device_get_softc(dev);
117 if (sc->sc_leddev) {
118 led_destroy(sc->sc_leddev);
119 sc->sc_leddev = NULL;
120 }
121 GPIOLED_LOCK_DESTROY(sc);
122 return (0);
123}
124
125static devclass_t gpioled_devclass;
126
127static device_method_t gpioled_methods[] = {
128 /* Device interface */
129 DEVMETHOD(device_probe, gpioled_probe),
130 DEVMETHOD(device_attach, gpioled_attach),
131 DEVMETHOD(device_detach, gpioled_detach),
132
133 { 0, 0 }
134};
135
136static driver_t gpioled_driver = {
137 "gpioled",
138 gpioled_methods,
139 sizeof(struct gpioled_softc),
140};
141
142DRIVER_MODULE(gpioled, gpiobus, gpioled_driver, gpioled_devclass, 0, 0);
| 29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bio.h>
33#include <sys/bus.h>
34#include <sys/conf.h>
35#include <sys/kernel.h>
36#include <sys/kthread.h>
37#include <sys/lock.h>
38#include <sys/malloc.h>
39#include <sys/module.h>
40#include <sys/mutex.h>
41
42#include <dev/led/led.h>
43#include <sys/gpio.h>
44#include "gpiobus_if.h"
45
46/*
47 * Only one pin for led
48 */
49#define GPIOLED_PIN 0
50
51#define GPIOLED_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
52#define GPIOLED_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
53#define GPIOLED_LOCK_INIT(_sc) \
54 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
55 "gpioled", MTX_DEF)
56#define GPIOLED_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
57
58struct gpioled_softc
59{
60 device_t sc_dev;
61 device_t sc_busdev;
62 struct mtx sc_mtx;
63 struct cdev *sc_leddev;
64};
65
66static void gpioled_control(void *, int);
67static int gpioled_probe(device_t);
68static int gpioled_attach(device_t);
69static int gpioled_detach(device_t);
70
71static void
72gpioled_control(void *priv, int onoff)
73{
74 struct gpioled_softc *sc = priv;
75 GPIOLED_LOCK(sc);
76 GPIOBUS_LOCK_BUS(sc->sc_busdev);
77 GPIOBUS_ACQUIRE_BUS(sc->sc_busdev, sc->sc_dev);
78 GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, GPIOLED_PIN,
79 onoff ? GPIO_PIN_HIGH : GPIO_PIN_LOW);
80 GPIOBUS_RELEASE_BUS(sc->sc_busdev, sc->sc_dev);
81 GPIOBUS_UNLOCK_BUS(sc->sc_busdev);
82 GPIOLED_UNLOCK(sc);
83}
84
85static int
86gpioled_probe(device_t dev)
87{
88 device_set_desc(dev, "GPIO led");
89 return (0);
90}
91
92static int
93gpioled_attach(device_t dev)
94{
95 struct gpioled_softc *sc;
96 const char *name;
97
98 sc = device_get_softc(dev);
99 sc->sc_dev = dev;
100 sc->sc_busdev = device_get_parent(dev);
101 GPIOLED_LOCK_INIT(sc);
102 if (resource_string_value(device_get_name(dev),
103 device_get_unit(dev), "name", &name))
104 name = NULL;
105
106 sc->sc_leddev = led_create(gpioled_control, sc, name ? name :
107 device_get_nameunit(dev));
108
109 return (0);
110}
111
112static int
113gpioled_detach(device_t dev)
114{
115 struct gpioled_softc *sc;
116
117 sc = device_get_softc(dev);
118 if (sc->sc_leddev) {
119 led_destroy(sc->sc_leddev);
120 sc->sc_leddev = NULL;
121 }
122 GPIOLED_LOCK_DESTROY(sc);
123 return (0);
124}
125
126static devclass_t gpioled_devclass;
127
128static device_method_t gpioled_methods[] = {
129 /* Device interface */
130 DEVMETHOD(device_probe, gpioled_probe),
131 DEVMETHOD(device_attach, gpioled_attach),
132 DEVMETHOD(device_detach, gpioled_detach),
133
134 { 0, 0 }
135};
136
137static driver_t gpioled_driver = {
138 "gpioled",
139 gpioled_methods,
140 sizeof(struct gpioled_softc),
141};
142
143DRIVER_MODULE(gpioled, gpiobus, gpioled_driver, gpioled_devclass, 0, 0);
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