mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 2006 Kevin Lo. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <arm/xscale/ixp425/ixp425reg.h>
|
|
#include <arm/xscale/ixp425/ixp425var.h>
|
|
|
|
#include <dev/led/led.h>
|
|
|
|
#define GPIO_LED_STATUS 3
|
|
#define GPIO_LED_STATUS_BIT (1U << GPIO_LED_STATUS)
|
|
|
|
struct led_avila_softc {
|
|
device_t sc_dev;
|
|
bus_space_tag_t sc_iot;
|
|
bus_space_handle_t sc_gpio_ioh;
|
|
struct cdev *sc_led;
|
|
};
|
|
|
|
static void
|
|
led_func(void *arg, int onoff)
|
|
{
|
|
struct led_avila_softc *sc = arg;
|
|
uint32_t reg;
|
|
|
|
IXP4XX_GPIO_LOCK();
|
|
reg = GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOUTR);
|
|
if (onoff)
|
|
reg &= ~GPIO_LED_STATUS_BIT;
|
|
else
|
|
reg |= GPIO_LED_STATUS_BIT;
|
|
GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOUTR, reg);
|
|
IXP4XX_GPIO_UNLOCK();
|
|
}
|
|
|
|
static int
|
|
led_avila_probe(device_t dev)
|
|
{
|
|
device_set_desc(dev, "Gateworks Avila Front Panel LED");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
led_avila_attach(device_t dev)
|
|
{
|
|
struct led_avila_softc *sc = device_get_softc(dev);
|
|
struct ixp425_softc *sa = device_get_softc(device_get_parent(dev));
|
|
|
|
sc->sc_dev = dev;
|
|
sc->sc_iot = sa->sc_iot;
|
|
sc->sc_gpio_ioh = sa->sc_gpio_ioh;
|
|
|
|
/* Configure LED GPIO pin as output */
|
|
GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOER,
|
|
GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOER) &~ GPIO_LED_STATUS_BIT);
|
|
|
|
sc->sc_led = led_create(led_func, sc, "gpioled");
|
|
|
|
led_func(sc, 1); /* Turn on LED */
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
led_avila_detach(device_t dev)
|
|
{
|
|
struct led_avila_softc *sc = device_get_softc(dev);
|
|
|
|
if (sc->sc_led != NULL)
|
|
led_destroy(sc->sc_led);
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t led_avila_methods[] = {
|
|
DEVMETHOD(device_probe, led_avila_probe),
|
|
DEVMETHOD(device_attach, led_avila_attach),
|
|
DEVMETHOD(device_detach, led_avila_detach),
|
|
|
|
{0, 0},
|
|
};
|
|
|
|
static driver_t led_avila_driver = {
|
|
"led_avila",
|
|
led_avila_methods,
|
|
sizeof(struct led_avila_softc),
|
|
};
|
|
static devclass_t led_avila_devclass;
|
|
|
|
DRIVER_MODULE(led_avila, ixp, led_avila_driver, led_avila_devclass, 0, 0);
|