NetBSD-5.0.2/sys/arch/zaurus/dev/scoop.c
/* $NetBSD: scoop.c,v 1.5 2008/06/13 13:58:21 cegger Exp $ */
/* $OpenBSD: zaurus_scoop.c,v 1.12 2005/11/17 05:26:31 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: scoop.c,v 1.5 2008/06/13 13:58:21 cegger Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/gpio.h>
#include <machine/bus.h>
#include <arm/xscale/pxa2x0var.h>
#include <zaurus/zaurus/zaurus_reg.h>
#include <zaurus/zaurus/zaurus_var.h>
#include <zaurus/dev/scoopreg.h>
#include <zaurus/dev/scoopvar.h>
#include "ioconf.h"
struct scoop_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
uint16_t sc_gpwr; /* GPIO state before suspend */
};
static int scoopmatch(struct device *, struct cfdata *, void *);
static void scoopattach(struct device *, struct device *, void *);
CFATTACH_DECL(scoop, sizeof(struct scoop_softc),
scoopmatch, scoopattach, NULL, NULL);
#if 0
static int scoop_gpio_pin_read(struct scoop_softc *sc, int);
#endif
static void scoop_gpio_pin_write(struct scoop_softc *sc, int, int);
static void scoop_gpio_pin_ctl(struct scoop_softc *sc, int, int);
enum scoop_card {
SD_CARD,
CF_CARD /* socket 0 (external) */
};
static void scoop0_set_card_power(enum scoop_card card, int new_cpr);
static int
scoopmatch(struct device *parent, struct cfdata *cf, void *aux)
{
/*
* Only C3000-like models are known to have two SCOOPs.
*/
if (ZAURUS_ISC3000)
return (cf->cf_unit < 2);
return (cf->cf_unit == 0);
}
static void
scoopattach(struct device *parent, struct device *self, void *aux)
{
struct pxaip_attach_args *pxa = (struct pxaip_attach_args *)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 = C3000_SCOOP0_BASE;
else
addr = C3000_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;
}
if (ZAURUS_ISC3000 && sc->sc_dev.dv_unit == 1) {
scoop_gpio_pin_ctl(sc, SCOOP1_AKIN_PULLUP, GPIO_PIN_OUTPUT);
scoop_gpio_pin_write(sc, SCOOP1_AKIN_PULLUP, GPIO_PIN_LOW);
} else if (!ZAURUS_ISC3000) {
scoop_gpio_pin_ctl(sc, SCOOP0_AKIN_PULLUP, GPIO_PIN_OUTPUT);
scoop_gpio_pin_write(sc, SCOOP0_AKIN_PULLUP, GPIO_PIN_LOW);
}
printf(": PCMCIA/GPIO controller\n");
}
#if 0
static int
scoop_gpio_pin_read(struct scoop_softc *sc, int pin)
{
uint16_t bit = (1 << pin);
uint16_t rv;
rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
return (rv & bit) ? 1 : 0;
}
#endif
static void
scoop_gpio_pin_write(struct scoop_softc *sc, int pin, int level)
{
uint16_t bit = (1 << pin);
uint16_t rv;
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));
}
static void
scoop_gpio_pin_ctl(struct scoop_softc *sc, int pin, int flags)
{
uint16_t bit = (1 << pin);
uint16_t rv;
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);
}
/*
* Turn the LCD background light and contrast signal on or off.
*/
void
scoop_set_backlight(int on, int cont)
{
struct scoop_softc *sc;
#if 0
struct scoop_softc *sc0;
sc0 = device_lookup_private(&scoop_cd, 0);
#endif
sc = device_lookup_private(&scoop_cd, 1);
if (sc != NULL) {
/* C3000 */
scoop_gpio_pin_write(sc,
SCOOP1_BACKLIGHT_CONT, !cont);
scoop_gpio_pin_write(sc,
SCOOP1_BACKLIGHT_ON, on);
}
#if 0
else if (sc0 != NULL) {
scoop_gpio_pin_write(sc0,
SCOOP0_BACKLIGHT_CONT, cont);
}
#endif
}
/*
* Turn the infrared LED on or off (must be on while transmitting).
*/
void
scoop_set_irled(int on)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 1);
if (sc != NULL) {
/* IR_ON is inverted */
scoop_gpio_pin_write(sc,
SCOOP1_IR_ON, !on);
}
}
/*
* Turn the green and orange LEDs on or off. If the orange LED is on,
* then it is wired to indicate if A/C is connected. The green LED has
* no such predefined function.
*/
void
scoop_led_set(int led, int on)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 0);
if (sc != NULL) {
if ((led & SCOOP_LED_GREEN) != 0) {
scoop_gpio_pin_write(sc,
SCOOP0_LED_GREEN, on);
}
if (scoop_cd.cd_ndevs > 1 && (led & SCOOP_LED_ORANGE) != 0) {
scoop_gpio_pin_write(sc,
SCOOP0_LED_ORANGE_C3000, on);
}
}
}
/*
* Enable or disable the headphone output connection.
*/
void
scoop_set_headphone(int on)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 0);
if (sc == NULL)
return;
scoop_gpio_pin_ctl(sc, SCOOP0_MUTE_L,
GPIO_PIN_OUTPUT);
scoop_gpio_pin_ctl(sc, SCOOP0_MUTE_R,
GPIO_PIN_OUTPUT);
if (on) {
scoop_gpio_pin_write(sc, SCOOP0_MUTE_L,
GPIO_PIN_HIGH);
scoop_gpio_pin_write(sc, SCOOP0_MUTE_R,
GPIO_PIN_HIGH);
} else {
scoop_gpio_pin_write(sc, SCOOP0_MUTE_L,
GPIO_PIN_LOW);
scoop_gpio_pin_write(sc, SCOOP0_MUTE_R,
GPIO_PIN_LOW);
}
}
/*
* Turn on pullup resistor while not reading the remote control.
*/
void
scoop_akin_pullup(int enable)
{
struct scoop_softc *sc0;
struct scoop_softc *sc1;
sc0 = device_lookup_private(&scoop_cd, 0);
sc1 = device_lookup_private(&scoop_cd, 1);
if (sc1 != NULL) {
scoop_gpio_pin_write(sc1,
SCOOP1_AKIN_PULLUP, enable);
} else if (sc0 != NULL) {
scoop_gpio_pin_write(sc0,
SCOOP0_AKIN_PULLUP, enable);
}
}
void
scoop_battery_temp_adc(int enable)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 0);
if (sc != NULL) {
scoop_gpio_pin_write(sc,
SCOOP0_ADC_TEMP_ON_C3000, enable);
}
}
void
scoop_charge_battery(int enable, int voltage_high)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 0);
if (sc != NULL) {
scoop_gpio_pin_write(sc,
SCOOP0_JK_B_C3000, voltage_high);
scoop_gpio_pin_write(sc,
SCOOP0_CHARGE_OFF_C3000, !enable);
}
}
void
scoop_discharge_battery(int enable)
{
struct scoop_softc *sc;
sc = device_lookup_private(&scoop_cd, 0);
if (sc != NULL) {
scoop_gpio_pin_write(sc,
SCOOP0_JK_A_C3000, enable);
}
}
/*
* Enable or disable 3.3V power to the SD/MMC card slot.
*/
void
scoop_set_sdmmc_power(int on)
{
scoop0_set_card_power(SD_CARD, on ? SCP_CPR_SD_3V : SCP_CPR_OFF);
}
/*
* The Card Power Register of the first SCOOP unit controls the power
* for the first CompactFlash slot and the SD/MMC card slot as well.
*/
void
scoop0_set_card_power(enum scoop_card card, int new_cpr)
{
struct scoop_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint16_t cpr;
sc = device_lookup_private(&scoop_cd, 0);
if (sc == NULL)
return;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
cpr = bus_space_read_2(iot, ioh, SCOOP_CPR);
if (new_cpr & SCP_CPR_VOLTAGE_MSK) {
if (card == CF_CARD)
cpr |= SCP_CPR_5V;
else if (card == SD_CARD)
cpr |= SCP_CPR_SD_3V;
scoop_gpio_pin_write(sc, SCOOP0_CF_POWER_C3000, 1);
if (!ISSET(cpr, SCP_CPR_5V) && !ISSET(cpr, SCP_CPR_SD_3V))
delay(5000);
bus_space_write_2(iot, ioh, SCOOP_CPR, cpr | new_cpr);
} else {
if (card == CF_CARD)
cpr &= ~SCP_CPR_5V;
else if (card == SD_CARD)
cpr &= ~SCP_CPR_SD_3V;
if (!ISSET(cpr, SCP_CPR_5V) && !ISSET(cpr, SCP_CPR_SD_3V)) {
bus_space_write_2(iot, ioh, SCOOP_CPR, SCP_CPR_OFF);
delay(1000);
scoop_gpio_pin_write(sc, SCOOP0_CF_POWER_C3000, 0);
} else
bus_space_write_2(iot, ioh, SCOOP_CPR, cpr | new_cpr);
}
}
void
scoop_check_mcr(void)
{
struct scoop_softc *sc0, *sc1, *sc;
uint16_t v;
sc0 = device_lookup_private(&scoop_cd, 0);
sc1 = device_lookup_private(&scoop_cd, 1);
/* C3000 */
if (sc1 != NULL) {
sc = sc0;
v = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR);
if ((v & 0x100) == 0) {
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
0x0101);
}
sc = sc1;
v = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR);
if ((v & 0x100) == 0) {
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
0x0101);
}
}
}
void
scoop_suspend(void)
{
struct scoop_softc *sc, *sc0, *sc1;
uint32_t rv;
sc0 = device_lookup_private(&scoop_cd, 0);
sc1 = device_lookup_private(&scoop_cd, 1);
if (sc0 != NULL) {
sc = sc0;
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 (sc1 != NULL) {
sc = sc1;
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, *sc0, *sc1;
sc0 = device_lookup_private(&scoop_cd, 0);
sc1 = device_lookup_private(&scoop_cd, 1);
if (sc0 != NULL) {
sc = sc0;
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr);
}
if (sc1 != NULL) {
sc = sc1;
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
sc->sc_gpwr);
}
}