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/* $OpenBSD: pxa27x_udc.c,v 1.5 2005/03/30 14:24:39 dlg Exp $ */
/*
* Copyright (c) 2005 David Gwynne <dlg@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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0_gpio.h>
#include <arm/xscale/pxa27x_udcreg.h>
int pxaudc_match(struct device *, void *, void *);
void pxaudc_attach(struct device *, struct device *, void *);
int pxaudc_detach(struct device *, int);
void pxaudc_power(int, void *);
struct pxaudc_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_size_t sc_size;
void *sc_powerhook;
};
void pxaudc_enable(struct pxaudc_softc *);
struct cfattach pxaudc_ca = {
sizeof(struct pxaudc_softc), pxaudc_match, pxaudc_attach,
pxaudc_detach
};
struct cfdriver pxaudc_cd = {
NULL, "pxaudc", DV_DULL
};
int
pxaudc_match(struct device *parent, void *match, void *aux)
{
if ((cputype & ~CPU_ID_XSCALE_COREREV_MASK) != CPU_ID_PXA27X)
return (0);
return (1);
}
void
pxaudc_attach(struct device *parent, struct device *self, void *aux)
{
struct pxaudc_softc *sc = (struct pxaudc_softc *)self;
struct pxaip_attach_args *pxa = aux;
sc->sc_iot = pxa->pxa_iot;
sc->sc_size = 0;
sc->sc_powerhook = NULL;
if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA2X0_USBDC_SIZE, 0,
&sc->sc_ioh)) {
printf(": cannot map mem space\n");
return;
}
sc->sc_size = PXA2X0_USBDC_SIZE;
printf(": USB Device Controller\n");
bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, sc->sc_size,
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
pxa2x0_gpio_set_function(35, GPIO_ALT_FN_2_IN); /* USB_P2_1 */
pxa2x0_gpio_set_function(37, GPIO_ALT_FN_1_OUT); /* USB_P2_8 */
pxa2x0_gpio_set_function(41, GPIO_ALT_FN_2_IN); /* USB_P2_7 */
pxa2x0_gpio_set_function(89, GPIO_ALT_FN_2_OUT); /* USBHPEN<1> */
pxa2x0_gpio_set_function(120, GPIO_ALT_FN_2_OUT); /* USBHPEN<2> */
pxa2x0_clkman_config(CKEN_USBDC, 0);
pxaudc_enable(sc);
pxa2x0_gpio_set_bit(37); /* USB_P2_8 */
sc->sc_powerhook = powerhook_establish(pxaudc_power, sc);
}
int
pxaudc_detach(struct device *self, int flags)
{
struct pxaudc_softc *sc = (struct pxaudc_softc *)self;
if (sc->sc_powerhook != NULL)
powerhook_disestablish(sc->sc_powerhook);
if (sc->sc_size) {
bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
sc->sc_size = 0;
}
return (0);
}
void
pxaudc_power(int why, void *arg)
{
struct pxaudc_softc *sc = (struct pxaudc_softc *)arg;
if (why == PWR_RESUME)
pxaudc_enable(sc);
}
void
pxaudc_enable(struct pxaudc_softc *sc)
{
u_int32_t hr;
/* disable the controller */
hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR,
hr & ~USBDC_UDCCR_UDE);
hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1,
hr | USBDC_UDCICR1_IERS);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 0);
hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
hr | USBDC_UP2OCR_HXS);
hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
hr | USBDC_UP2OCR_HXOE);
hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
hr | USBDC_UP2OCR_DPPDE|USBDC_UP2OCR_DMPDE);
}
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