1 /* $NetBSD: pxa2x0_udc.c,v 1.3 2009/08/09 06:24:03 kiyohara Exp $ */ 2 /* $OpenBSD: pxa27x_udc.c,v 1.5 2005/03/30 14:24:39 dlg Exp $ */ 3 4 /* 5 * Copyright (c) 2005 David Gwynne <dlg@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/param.h> 21 #include <sys/systm.h> 22 #include <sys/device.h> 23 #include <sys/kernel.h> 24 25 #include <machine/intr.h> 26 #include <machine/bus.h> 27 28 #include <arm/xscale/pxa2x0cpu.h> 29 #include <arm/xscale/pxa2x0reg.h> 30 #include <arm/xscale/pxa2x0var.h> 31 #include <arm/xscale/pxa2x0_gpio.h> 32 33 struct pxaudc_softc { 34 struct device sc_dev; 35 bus_space_tag_t sc_iot; 36 bus_space_handle_t sc_ioh; 37 bus_size_t sc_size; 38 39 void *sc_powerhook; 40 }; 41 42 static int pxaudc_match(struct device *, struct cfdata *, void *); 43 static void pxaudc_attach(struct device *, struct device *, void *); 44 static int pxaudc_detach(struct device *, int); 45 46 CFATTACH_DECL(pxaudc, sizeof(struct pxaudc_softc), 47 pxaudc_match, pxaudc_attach, pxaudc_detach, NULL); 48 49 static void pxaudc_power(int, void *); 50 static void pxaudc_enable(struct pxaudc_softc *); 51 52 static int 53 pxaudc_match(struct device *parent, struct cfdata *cf, void *aux) 54 { 55 struct pxaip_attach_args *pxa = aux; 56 57 if (CPU_IS_PXA270 && strcmp(pxa->pxa_name, cf->cf_name) == 0) { 58 pxa->pxa_size = PXA270_USBDC_SIZE; 59 return 1; 60 } 61 return 0; 62 } 63 64 static void 65 pxaudc_attach(struct device *parent, struct device *self, void *aux) 66 { 67 struct pxaudc_softc *sc = (struct pxaudc_softc *)self; 68 struct pxaip_attach_args *pxa = (struct pxaip_attach_args *)aux; 69 70 sc->sc_iot = pxa->pxa_iot; 71 sc->sc_size = 0; 72 sc->sc_powerhook = NULL; 73 74 if (bus_space_map(sc->sc_iot, pxa->pxa_addr, pxa->pxa_size, 0, 75 &sc->sc_ioh)) { 76 aprint_error(": couldn't map memory space\n"); 77 return; 78 } 79 sc->sc_size = pxa->pxa_size; 80 81 printf(": PXA2x0 USB Device Controller\n"); 82 83 bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, sc->sc_size, 84 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 85 86 pxa2x0_clkman_config(CKEN_USBDC, 1); 87 88 pxaudc_enable(sc); 89 90 sc->sc_powerhook = powerhook_establish(sc->sc_dev.dv_xname, 91 pxaudc_power, sc); 92 if (sc->sc_powerhook == NULL) { 93 aprint_error("%s: unable to establish powerhook.\n", 94 sc->sc_dev.dv_xname); 95 } 96 } 97 98 static int 99 pxaudc_detach(struct device *self, int flags) 100 { 101 struct pxaudc_softc *sc = (struct pxaudc_softc *)self; 102 103 if (sc->sc_powerhook) 104 powerhook_disestablish(sc->sc_powerhook); 105 106 if (sc->sc_size) { 107 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size); 108 sc->sc_size = 0; 109 } 110 111 return 0; 112 } 113 114 static void 115 pxaudc_power(int why, void *arg) 116 { 117 struct pxaudc_softc *sc = (struct pxaudc_softc *)arg; 118 119 switch (why) { 120 case PWR_RESUME: 121 pxaudc_enable(sc); 122 break; 123 } 124 } 125 126 static void 127 pxaudc_enable(struct pxaudc_softc *sc) 128 { 129 uint32_t hr; 130 131 /* disable the controller */ 132 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR); 133 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR, 134 hr & ~USBDC_UDCCR_UDE); 135 136 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1); 137 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1, 138 hr | USBDC_UDCICR1_IERS); 139 140 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 0); 141 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 142 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 143 hr | USBDC_UP2OCR_HXS); 144 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 145 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 146 hr | USBDC_UP2OCR_HXOE); 147 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 148 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 149 hr | USBDC_UP2OCR_DPPDE|USBDC_UP2OCR_DMPDE); 150 } 151