/* $NetBSD: pxa2x0_udc.c,v 1.1 2006/12/17 16:03:33 peter Exp $ */ /* $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/pxa2x0cpu.h> #include <arm/xscale/pxa2x0reg.h> #include <arm/xscale/pxa2x0var.h> #include <arm/xscale/pxa2x0_gpio.h> 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; }; static int pxaudc_match(struct device *, struct cfdata *, void *); static void pxaudc_attach(struct device *, struct device *, void *); static int pxaudc_detach(struct device *, int); CFATTACH_DECL(pxaudc, sizeof(struct pxaudc_softc), pxaudc_match, pxaudc_attach, pxaudc_detach, NULL); static void pxaudc_power(int, void *); static void pxaudc_enable(struct pxaudc_softc *); static int pxaudc_match(struct device *parent, struct cfdata *cf, void *aux) { if (CPU_IS_PXA270) return 1; return 0; } static void pxaudc_attach(struct device *parent, struct device *self, void *aux) { struct pxaudc_softc *sc = (struct pxaudc_softc *)self; struct pxaip_attach_args *pxa = (struct pxaip_attach_args *)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)) { aprint_error(": couldn't map memory space\n"); return; } sc->sc_size = PXA2X0_USBDC_SIZE; printf(": PXA2x0 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, 1); pxaudc_enable(sc); pxa2x0_gpio_set_bit(37); /* USB_P2_8 */ sc->sc_powerhook = powerhook_establish(sc->sc_dev.dv_xname, pxaudc_power, sc); if (sc->sc_powerhook == NULL) { aprint_error("%s: unable to establish powerhook.\n", sc->sc_dev.dv_xname); } } static int pxaudc_detach(struct device *self, int flags) { struct pxaudc_softc *sc = (struct pxaudc_softc *)self; if (sc->sc_powerhook) 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; } static void pxaudc_power(int why, void *arg) { struct pxaudc_softc *sc = (struct pxaudc_softc *)arg; switch (why) { case PWR_RESUME: pxaudc_enable(sc); break; } } static void pxaudc_enable(struct pxaudc_softc *sc) { uint32_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); }