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avila_led.c (164508) avila_led.c (186352)
1/*-
2 * Copyright (c) 2006 Kevin Lo. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 9 unchanged lines hidden (view full) ---

18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2006 Kevin Lo. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 9 unchanged lines hidden (view full) ---

18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: head/sys/arm/xscale/ixp425/avila_led.c 164508 2006-11-22 12:57:17Z kevlo $");
26__FBSDID("$FreeBSD: head/sys/arm/xscale/ixp425/avila_led.c 186352 2008-12-20 03:26:09Z sam $");
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/kernel.h>
31#include <sys/module.h>
32#include <sys/bus.h>
33
34#include <arm/xscale/ixp425/ixp425reg.h>
35#include <arm/xscale/ixp425/ixp425var.h>
36
37#include <dev/led/led.h>
38
39#define GPIO_LED_STATUS 3
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/kernel.h>
31#include <sys/module.h>
32#include <sys/bus.h>
33
34#include <arm/xscale/ixp425/ixp425reg.h>
35#include <arm/xscale/ixp425/ixp425var.h>
36
37#include <dev/led/led.h>
38
39#define GPIO_LED_STATUS 3
40#define GPIO_LED_STATUS_BIT (1U << GPIO_LED_STATUS)
40#define GPIO_LED_STATUS_BIT (1U << GPIO_LED_STATUS)
41
41
42static struct cdev *gpioled;
43
44struct led_avila_softc {
45 device_t sc_dev;
46 bus_space_tag_t sc_iot;
47 bus_space_handle_t sc_gpio_ioh;
42struct led_avila_softc {
43 device_t sc_dev;
44 bus_space_tag_t sc_iot;
45 bus_space_handle_t sc_gpio_ioh;
46 struct cdev *sc_led;
48};
49
47};
48
50static struct led_avila_softc *led_avila_sc = NULL;
51
52static void
49static void
53led_func(void *unused, int onoff)
50led_func(void *arg, int onoff)
54{
51{
55 struct led_avila_softc *sc = led_avila_sc;
52 struct led_avila_softc *sc = arg;
56 uint32_t reg;
57
58 reg = GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOUTR);
59 if (onoff)
60 reg &= ~GPIO_LED_STATUS_BIT;
61 else
62 reg |= GPIO_LED_STATUS_BIT;
63 GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOUTR, reg);
64}
65
66static int
67led_avila_probe(device_t dev)
68{
53 uint32_t reg;
54
55 reg = GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOUTR);
56 if (onoff)
57 reg &= ~GPIO_LED_STATUS_BIT;
58 else
59 reg |= GPIO_LED_STATUS_BIT;
60 GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOUTR, reg);
61}
62
63static int
64led_avila_probe(device_t dev)
65{
69 device_set_desc(dev, "Gateworks Avila GPIO connected LED");
66 device_set_desc(dev, "Gateworks Avila Front Panel LED");
70 return (0);
71}
72
73static int
74led_avila_attach(device_t dev)
75{
76 struct led_avila_softc *sc = device_get_softc(dev);
77 struct ixp425_softc *sa = device_get_softc(device_get_parent(dev));
67 return (0);
68}
69
70static int
71led_avila_attach(device_t dev)
72{
73 struct led_avila_softc *sc = device_get_softc(dev);
74 struct ixp425_softc *sa = device_get_softc(device_get_parent(dev));
78 void *led = NULL;
79 uint32_t reg;
80
75
81 led_avila_sc = sc;
82
83 sc->sc_dev = dev;
84 sc->sc_iot = sa->sc_iot;
85 sc->sc_gpio_ioh = sa->sc_gpio_ioh;
86
87 /* Configure LED GPIO pin as output */
76 sc->sc_dev = dev;
77 sc->sc_iot = sa->sc_iot;
78 sc->sc_gpio_ioh = sa->sc_gpio_ioh;
79
80 /* Configure LED GPIO pin as output */
88 reg = GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOER);
89 reg &= ~GPIO_LED_STATUS_BIT;
90 GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOER, reg);
81 GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOER,
82 GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOER) &~ GPIO_LED_STATUS_BIT);
91
83
92 gpioled = led_create(led_func, led, "gpioled");
84 sc->sc_led = led_create(led_func, sc, "gpioled");
93
85
94 /* Turn on LED */
95 led_func(led, 1);
86 led_func(sc, 1); /* Turn on LED */
96
97 return (0);
98}
99
87
88 return (0);
89}
90
91static void
92led_avila_detach(device_t dev)
93{
94 struct led_avila_softc *sc = device_get_softc(dev);
95
96 if (sc->sc_led != NULL)
97 led_destroy(sc->sc_led);
98}
99
100static device_method_t led_avila_methods[] = {
101 DEVMETHOD(device_probe, led_avila_probe),
102 DEVMETHOD(device_attach, led_avila_attach),
100static device_method_t led_avila_methods[] = {
101 DEVMETHOD(device_probe, led_avila_probe),
102 DEVMETHOD(device_attach, led_avila_attach),
103 DEVMETHOD(device_detach, led_avila_detach),
103
104 {0, 0},
105};
106
107static driver_t led_avila_driver = {
108 "led_avila",
109 led_avila_methods,
110 sizeof(struct led_avila_softc),
111};
112static devclass_t led_avila_devclass;
113
114DRIVER_MODULE(led_avila, ixp, led_avila_driver, led_avila_devclass, 0, 0);
104
105 {0, 0},
106};
107
108static driver_t led_avila_driver = {
109 "led_avila",
110 led_avila_methods,
111 sizeof(struct led_avila_softc),
112};
113static devclass_t led_avila_devclass;
114
115DRIVER_MODULE(led_avila, ixp, led_avila_driver, led_avila_devclass, 0, 0);