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/* $OpenBSD: macgpio.c,v 1.6 2007/04/22 22:31:14 deraadt Exp $ */
/* $NetBSD: gpio.c,v 1.2 2001/02/27 05:16:33 matt Exp $ */
/*-
* Copyright (C) 1998 Internet Research Institute, Inc.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by
* Internet Research Institute, Inc.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <dev/ofw/openfirm.h>
#include <machine/autoconf.h>
#include <machine/pio.h>
#include "adb.h"
static void macgpio_attach (struct device *, struct device *, void *);
static int macgpio_match (struct device *, void *, void *);
static int macgpio_print (void *aux, const char *gpio);
static void macgpio_gpio_attach (struct device *, struct device *, void *);
static int macgpio_gpio_match (struct device *, void *, void *);
static int gpio_intr (void *);
struct gpio_softc {
struct device sc_dev;
u_int8_t *sc_port;
};
struct cfattach macgpio_ca = {
sizeof(struct gpio_softc), macgpio_match, macgpio_attach
};
struct cfattach macgpio_gpio_ca = {
sizeof(struct gpio_softc), macgpio_gpio_match, macgpio_gpio_attach
};
struct cfdriver macgpio_cd = {
NULL, "macgpio", DV_DULL
};
int
macgpio_match(struct device *parent, void *cf, void *aux)
{
struct confargs *ca = aux;
if (strcmp(ca->ca_name, "gpio") != 0)
return 0;
if (ca->ca_nreg < 8)
return 0;
return 1;
}
void
macgpio_attach(struct device *parent, struct device *self, void *aux)
{
struct gpio_softc *sc = (struct gpio_softc *)self;
struct confargs *ca = aux, ca2;
int child;
int namelen;
int intr[6];
u_int reg[20];
char name[32];
printf("\n");
sc->sc_port = mapiodev(ca->ca_baseaddr + ca->ca_reg[0], ca->ca_reg[1]);
ca2.ca_baseaddr = ca->ca_baseaddr;
for (child = OF_child(ca->ca_node); child; child = OF_peer(child)) {
namelen = OF_getprop(child, "name", name, sizeof(name));
if (namelen < 0)
continue;
if (namelen >= sizeof(name))
continue;
name[namelen] = 0;
ca2.ca_name = name;
ca2.ca_node = child;
ca2.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg));
ca2.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
sizeof(intr));
if (ca2.ca_nintr == -1)
ca2.ca_nintr = OF_getprop(child, "interrupts", intr,
sizeof(intr));
ca2.ca_reg = reg;
ca2.ca_intr = intr;
config_found(self, &ca2, macgpio_print);
}
}
int
macgpio_print(void *aux, const char *gpio)
{
struct confargs *ca = aux;
if (gpio)
printf("\"%s\" at %s", ca->ca_name, gpio);
if (ca->ca_nreg > 0)
printf(" offset 0x%x", ca->ca_reg[0]);
return UNCONF;
}
int
macgpio_gpio_match(struct device *parent, void *cf, void *aux)
{
struct confargs *ca = aux;
if (strcmp(ca->ca_name, "extint-gpio1") != 0)
return 0;
if (ca->ca_nintr < 4)
return 0;
return 1;
}
void
macgpio_gpio_attach(struct device *parent, struct device *self, void *aux)
{
struct gpio_softc *sc = (struct gpio_softc *)self;
struct confargs *ca = aux;
sc->sc_port = ((struct gpio_softc *) parent)->sc_port;
mac_intr_establish(parent, ca->ca_intr[0], IST_LEVEL, IPL_HIGH,
gpio_intr, sc, sc->sc_dev.dv_xname);
printf(" irq %d\n", ca->ca_intr[0]);
}
#if NADB > 0
extern int adb_intr (void *);
extern struct cfdriver adb_cd;
#endif
int
gpio_intr(void *arg)
{
int rv = 0;
#if NADB > 0
if (adb_cd.cd_devs[0] != NULL)
rv = adb_intr(adb_cd.cd_devs[0]);
#endif
return rv;
}
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