152 lines
4.1 KiB
C
152 lines
4.1 KiB
C
/* $NetBSD: pxa2x0_udc.c,v 1.5 2011/07/01 20:32:51 dyoung Exp $ */
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/* $OpenBSD: pxa27x_udc.c,v 1.5 2005/03/30 14:24:39 dlg Exp $ */
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/*
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* Copyright (c) 2005 David Gwynne <dlg@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <machine/intr.h>
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#include <sys/bus.h>
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#include <arm/xscale/pxa2x0cpu.h>
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#include <arm/xscale/pxa2x0reg.h>
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#include <arm/xscale/pxa2x0var.h>
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#include <arm/xscale/pxa2x0_gpio.h>
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struct pxaudc_softc {
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device_t sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_size_t sc_size;
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void *sc_powerhook;
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};
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static int pxaudc_match(device_t, cfdata_t, void *);
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static void pxaudc_attach(device_t, device_t, void *);
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static int pxaudc_detach(device_t, int);
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CFATTACH_DECL_NEW(pxaudc, sizeof(struct pxaudc_softc),
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pxaudc_match, pxaudc_attach, pxaudc_detach, NULL);
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static void pxaudc_power(int, void *);
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static void pxaudc_enable(struct pxaudc_softc *);
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static int
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pxaudc_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct pxaip_attach_args *pxa = aux;
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if (CPU_IS_PXA270 && strcmp(pxa->pxa_name, cf->cf_name) == 0) {
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pxa->pxa_size = PXA270_USBDC_SIZE;
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return 1;
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}
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return 0;
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}
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static void
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pxaudc_attach(device_t parent, device_t self, void *aux)
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{
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struct pxaudc_softc *sc = device_private(self);
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struct pxaip_attach_args *pxa = (struct pxaip_attach_args *)aux;
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sc->sc_dev = self;
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sc->sc_iot = pxa->pxa_iot;
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sc->sc_size = 0;
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sc->sc_powerhook = NULL;
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aprint_normal(": USB Device Controller\n");
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aprint_naive("\n");
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if (bus_space_map(sc->sc_iot, pxa->pxa_addr, pxa->pxa_size, 0,
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&sc->sc_ioh)) {
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aprint_error_dev(self, "couldn't map memory space\n");
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return;
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}
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sc->sc_size = pxa->pxa_size;
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bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, sc->sc_size,
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BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
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pxa2x0_clkman_config(CKEN_USBDC, 1);
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pxaudc_enable(sc);
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sc->sc_powerhook = powerhook_establish(device_xname(self),
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pxaudc_power, sc);
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if (sc->sc_powerhook == NULL) {
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aprint_error_dev(self, "unable to establish powerhook.\n");
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}
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}
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static int
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pxaudc_detach(device_t self, int flags)
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{
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struct pxaudc_softc *sc = device_private(self);
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if (sc->sc_powerhook)
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powerhook_disestablish(sc->sc_powerhook);
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if (sc->sc_size) {
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size);
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sc->sc_size = 0;
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}
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return 0;
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}
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static void
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pxaudc_power(int why, void *arg)
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{
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struct pxaudc_softc *sc = (struct pxaudc_softc *)arg;
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switch (why) {
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case PWR_RESUME:
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pxaudc_enable(sc);
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break;
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}
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}
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static void
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pxaudc_enable(struct pxaudc_softc *sc)
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{
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uint32_t hr;
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/* disable the controller */
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hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR,
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hr & ~USBDC_UDCCR_UDE);
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hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1,
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hr | USBDC_UDCICR1_IERS);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 0);
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hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
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hr | USBDC_UP2OCR_HXS);
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hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
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hr | USBDC_UP2OCR_HXOE);
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hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
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hr | USBDC_UP2OCR_DPPDE|USBDC_UP2OCR_DMPDE);
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}
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