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/*-
* 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)
static struct cdev *gpioled;
struct led_avila_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_gpio_ioh;
};
static struct led_avila_softc *led_avila_sc = NULL;
static void
led_func(void *unused, int onoff)
{
struct led_avila_softc *sc = led_avila_sc;
uint32_t reg;
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);
}
static int
led_avila_probe(device_t dev)
{
device_set_desc(dev, "Gateworks Avila GPIO connected 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));
void *led = NULL;
uint32_t reg;
led_avila_sc = sc;
sc->sc_dev = dev;
sc->sc_iot = sa->sc_iot;
sc->sc_gpio_ioh = sa->sc_gpio_ioh;
/* Configure LED GPIO pin as output */
reg = GPIO_CONF_READ_4(sc, IXP425_GPIO_GPOER);
reg &= ~GPIO_LED_STATUS_BIT;
GPIO_CONF_WRITE_4(sc, IXP425_GPIO_GPOER, reg);
gpioled = led_create(led_func, led, "gpioled");
/* Turn on LED */
led_func(led, 1);
return (0);
}
static device_method_t led_avila_methods[] = {
DEVMETHOD(device_probe, led_avila_probe),
DEVMETHOD(device_attach, led_avila_attach),
{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);
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