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/* $OpenBSD: ppm.c,v 1.1 2006/06/02 04:46:01 jason Exp $ */
/*
* Copyright (c) 2006 Jason L. Wright (jason@thought.net)
* 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/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
#define BBC_GPIOBANK_INDEX 0x0
#define BBC_GPIOBANK_DATA 0x1
#define BBC_GPIO_PORT1_DATA 0x0
#define BBC_GPIO_PORT2_DATA 0x4
#define GPIO_P2D_LED 0x2
struct ppm_softc {
struct device sc_dv;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_estarh;
bus_space_handle_t sc_rioh;
bus_space_handle_t sc_gpiobankh;
bus_space_handle_t sc_gpioh;
struct blink_led sc_blink;
};
int ppm_match(struct device *, void *, void *);
void ppm_attach(struct device *, struct device *, void *);
struct cfattach ppm_ca = {
sizeof(struct ppm_softc), ppm_match, ppm_attach
};
struct cfdriver ppm_cd = {
NULL, "ppm", DV_DULL
};
void ppm_led_blink(void *, int);
int
ppm_match(struct device *parent, void *match, void *aux)
{
struct ebus_attach_args *ea = aux;
if (strcmp(ea->ea_name, "ppm"))
return (0);
return (1);
}
void
ppm_attach(struct device *parent, struct device *self, void *aux)
{
struct ppm_softc *sc = (void *)self;
struct ebus_attach_args *ea = aux;
u_int8_t reg;
sc->sc_iot = ea->ea_memtag;
if (ea->ea_nregs < 4) {
printf(": need %d regs\n", 4);
return;
}
#if 0
if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
0, 0, &sc->sc_estarh)) {
printf(": failed to map estar\n");
return;
}
#endif
#if 0
if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[1]), ea->ea_regs[1].size,
0, 0, &sc->sc_rioh)) {
printf(": failed to map riohr\n");
return;
}
#endif
if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[2]), ea->ea_regs[2].size,
0, 0, &sc->sc_gpiobankh)) {
printf(": failed to map gpiobank\n");
return;
}
if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[3]), ea->ea_regs[3].size,
0, 0, &sc->sc_gpioh)) {
printf(": failed to map gpio\n");
return;
}
bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,
BBC_GPIOBANK_INDEX, 0x22);
bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
reg = bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_DATA);
reg &= 0x7f;
bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,BBC_GPIOBANK_INDEX, reg);
bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
sc->sc_blink.bl_func = ppm_led_blink;
sc->sc_blink.bl_arg = sc;
blink_led_register(&sc->sc_blink);
printf("\n");
}
void
ppm_led_blink(void *vsc, int on)
{
struct ppm_softc *sc = vsc;
u_int8_t r;
r = bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
if (on)
r |= GPIO_P2D_LED;
else
r &= ~GPIO_P2D_LED;
bus_space_write_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA, r);
bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
}
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