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/* $OpenBSD: palm_mmc.c,v 1.2 2009/09/09 11:34:02 marex Exp $ */
/*
* Copyright (c) 2009 Marek Vasut <marex@openbsd.org>
* Copyright (c) 2007 Uwe Stuehler <uwe@openbsd.org>
*
* 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.
*/
/* Attachment driver for pxammc(4) on Palm */
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/sdmmc/sdmmcreg.h>
#include <machine/machine_reg.h>
#include <machine/palm_var.h>
#include <arch/arm/xscale/pxa2x0_gpio.h>
#include <arch/arm/xscale/pxammcvar.h>
int palm_mmc_match(struct device *, void *, void *);
void palm_mmc_attach(struct device *, struct device *, void *);
struct cfattach pxammc_palm_ca = {
sizeof(struct pxammc_softc),
palm_mmc_match,
palm_mmc_attach
};
u_int32_t palm_mmc_get_ocr(void *);
int palm_mmc_set_power(void *, u_int32_t);
int
palm_mmc_match(struct device *parent, void *match, void *aux)
{
return pxammc_match();
}
void
palm_mmc_attach(struct device *parent, struct device *self, void *aux)
{
struct pxammc_softc *sc = (struct pxammc_softc *)self;
sc->tag.cookie = (void *)sc;
sc->tag.get_ocr = palm_mmc_get_ocr;
sc->tag.set_power = palm_mmc_set_power;
/*
* Configure the GPIO pins. In SD/MMC mode, all pins except
* MMCLK are bidirectional and the direction is controlled in
* hardware without our assistence.
*/
if (mach_is_palmtc) {
pxa2x0_gpio_set_function(6, GPIO_ALT_FN_1_OUT);
pxa2x0_gpio_set_function(8, GPIO_ALT_FN_1_OUT);
sc->sc_gpio_detect = GPIO12_TC_MMC_DETECT;
} else {
pxa2x0_gpio_set_function(32, GPIO_ALT_FN_2_OUT);
pxa2x0_gpio_set_function(112, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(92, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(109, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(110, GPIO_ALT_FN_1_IN);
pxa2x0_gpio_set_function(111, GPIO_ALT_FN_1_IN);
sc->sc_gpio_detect = GPIO14_MMC_DETECT;
}
pxammc_attach(sc, aux);
}
u_int32_t
palm_mmc_get_ocr(void *cookie)
{
return MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V;
}
int
palm_mmc_set_power(void *cookie, u_int32_t ocr)
{
if (ISSET(ocr, MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V)) {
if (mach_is_palmz72)
pxa2x0_gpio_clear_bit(GPIO98_PALMZ72_MMC_POWER);
else if (mach_is_palmtc)
pxa2x0_gpio_set_bit(GPIO32_PALMTC_MMC_POWER);
else
pxa2x0_gpio_set_bit(GPIO114_MMC_POWER);
return 0;
} else if (ocr != 0) {
printf("palm_mmc_set_power: unsupported OCR (%#x)\n", ocr);
return EINVAL;
} else {
if (mach_is_palmz72)
pxa2x0_gpio_set_bit(GPIO98_PALMZ72_MMC_POWER);
else if (mach_is_palmtc)
pxa2x0_gpio_clear_bit(GPIO32_PALMTC_MMC_POWER);
else
pxa2x0_gpio_clear_bit(GPIO114_MMC_POWER);
return 0;
}
}
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