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/* $OpenBSD: zaurus_scoop.c,v 1.7 2005/03/08 23:29:06 uwe Exp $ */
/*
* Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/gpio.h>
#include <machine/bus.h>
#include <arm/xscale/pxa2x0var.h>
#include <zaurus/dev/zaurus_scoopreg.h>
#include <zaurus/dev/zaurus_scoopvar.h>
struct scoop_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
u_int16_t sc_gpwr; /* GPIO state before suspend */
};
int scoopmatch(struct device *, void *, void *);
void scoopattach(struct device *, struct device *, void *);
struct cfattach scoop_pxaip_ca = {
sizeof (struct scoop_softc), scoopmatch, scoopattach
};
struct cfdriver scoop_cd = {
NULL, "scoop", DV_DULL
};
int scoop_gpio_pin_read(struct scoop_softc *sc, int);
void scoop_gpio_pin_write(struct scoop_softc *sc, int, int);
void scoop_gpio_pin_ctl(struct scoop_softc *sc, int, int);
int
scoopmatch(struct device *parent, void *match, void *aux)
{
struct cfdata *cf = match;
/*
* Only the C3000 models (pxa270) are known to have two SCOOPs,
* on other models we only find the first one.
*/
if ((cputype & ~CPU_ID_XSCALE_COREREV_MASK) == CPU_ID_PXA27X)
return (cf->cf_unit < 2);
return (cf->cf_unit == 0);
}
void
scoopattach(struct device *parent, struct device *self, void *aux)
{
struct pxaip_attach_args *pxa = aux;
struct scoop_softc *sc = (struct scoop_softc *)self;
bus_addr_t addr;
bus_size_t size;
sc->sc_iot = pxa->pxa_iot;
if (pxa->pxa_addr != -1)
addr = pxa->pxa_addr;
else if (sc->sc_dev.dv_unit == 0)
addr = SCOOP0_BASE;
else
addr = SCOOP1_BASE;
size = pxa->pxa_size < SCOOP_SIZE ? SCOOP_SIZE : pxa->pxa_size;
if (bus_space_map(sc->sc_iot, addr, size, 0, &sc->sc_ioh) != 0) {
printf(": failed to map %s\n", sc->sc_dev.dv_xname);
return;
}
printf(": Onboard Peripheral Controller\n");
}
int
scoop_gpio_pin_read(struct scoop_softc *sc, int pin)
{
u_int16_t rv;
u_int16_t bit = (1 << pin);
rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
return (rv & bit) != 0 ? 1 : 0;
}
void
scoop_gpio_pin_write(struct scoop_softc *sc, int pin, int level)
{
u_int16_t rv;
u_int16_t bit = (1 << pin);
rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
level == GPIO_PIN_LOW ? (rv & ~bit) : (rv | bit));
}
void
scoop_gpio_pin_ctl(struct scoop_softc *sc, int pin, int flags)
{
u_int16_t rv;
u_int16_t bit = (1 << pin);
rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPCR);
switch (flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) {
case GPIO_PIN_INPUT:
rv &= ~bit;
break;
case GPIO_PIN_OUTPUT:
rv |= bit;
break;
}
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPCR, rv);
}
void
scoop_set_backlight(int on, int cont)
{
if (scoop_cd.cd_ndevs > 1 && scoop_cd.cd_devs[1] != NULL) {
/* C3000 */
scoop_gpio_pin_write(scoop_cd.cd_devs[1],
SCOOP1_BACKLIGHT_CONT, !cont);
scoop_gpio_pin_write(scoop_cd.cd_devs[1],
SCOOP1_BACKLIGHT_ON, on);
}
#if 0
else if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL) {
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_BACKLIGHT_CONT, cont);
}
#endif
}
void
scoop_led_set(int led, int on)
{
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL) {
if ((led & SCOOP_LED_GREEN) != 0)
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_LED_GREEN, on);
if (scoop_cd.cd_ndevs > 1 && (led & SCOOP_LED_ORANGE) != 0)
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_LED_ORANGE_C3000, on);
}
}
void
scoop_battery_temp_adc(int enable)
{
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL)
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_ADC_TEMP_ON_C3000, enable);
}
void
scoop_charge_battery(int enable, int voltage_high)
{
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL) {
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_JK_B_C3000, voltage_high);
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_CHARGE_OFF_C3000, !enable);
}
}
void
scoop_discharge_battery(int enable)
{
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL)
scoop_gpio_pin_write(scoop_cd.cd_devs[0],
SCOOP0_JK_A_C3000, enable);
}
/* XXX */
void scoop_check_mcr(void);
void
scoop_check_mcr(void)
{
struct scoop_softc *sc;
/* C3000 */
if (scoop_cd.cd_ndevs > 1 && scoop_cd.cd_devs[1] != NULL) {
sc = scoop_cd.cd_devs[0];
if ((bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR) &
0x100) == 0)
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
0x0101);
sc = scoop_cd.cd_devs[1];
if ((bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR) &
0x100) == 0)
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
0x0101);
}
}
void
scoop_suspend(void)
{
struct scoop_softc *sc;
u_int32_t rv;
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL) {
sc = scoop_cd.cd_devs[0];
sc->sc_gpwr = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
SCOOP_GPWR);
/* C3000 */
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr & ~((1<<SCOOP0_MUTE_L) | (1<<SCOOP0_MUTE_R) |
(1<<SCOOP0_JK_A_C3000) | (1<<SCOOP0_ADC_TEMP_ON_C3000) |
(1<<SCOOP0_LED_GREEN)));
}
/* C3000 */
if (scoop_cd.cd_ndevs > 1 && scoop_cd.cd_devs[1] != NULL) {
sc = scoop_cd.cd_devs[1];
sc->sc_gpwr = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
SCOOP_GPWR);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr & ~((1<<SCOOP1_RESERVED_4) |
(1<<SCOOP1_RESERVED_5) | (1<<SCOOP1_RESERVED_6) |
(1<<SCOOP1_BACKLIGHT_CONT) | (1<<SCOOP1_BACKLIGHT_ON) |
(1<<SCOOP1_MIC_BIAS)));
rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
rv | ((1<<SCOOP1_IR_ON) | (1<<SCOOP1_RESERVED_3)));
}
}
void
scoop_resume(void)
{
struct scoop_softc *sc;
if (scoop_cd.cd_ndevs > 0 && scoop_cd.cd_devs[0] != NULL) {
sc = scoop_cd.cd_devs[0];
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr);
}
if (scoop_cd.cd_ndevs > 1 && scoop_cd.cd_devs[1] != NULL) {
sc = scoop_cd.cd_devs[1];
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr);
}
}
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