1 /* $NetBSD: pxa2x0_udc.c,v 1.1 2006/12/17 16:03:33 peter 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 56 if (CPU_IS_PXA270) 57 return 1; 58 return 0; 59 } 60 61 static void 62 pxaudc_attach(struct device *parent, struct device *self, void *aux) 63 { 64 struct pxaudc_softc *sc = (struct pxaudc_softc *)self; 65 struct pxaip_attach_args *pxa = (struct pxaip_attach_args *)aux; 66 67 sc->sc_iot = pxa->pxa_iot; 68 sc->sc_size = 0; 69 sc->sc_powerhook = NULL; 70 71 if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA2X0_USBDC_SIZE, 0, 72 &sc->sc_ioh)) { 73 aprint_error(": couldn't map memory space\n"); 74 return; 75 } 76 sc->sc_size = PXA2X0_USBDC_SIZE; 77 78 printf(": PXA2x0 USB Device Controller\n"); 79 80 bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, sc->sc_size, 81 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 82 83 pxa2x0_gpio_set_function(35, GPIO_ALT_FN_2_IN); /* USB_P2_1 */ 84 pxa2x0_gpio_set_function(37, GPIO_ALT_FN_1_OUT); /* USB_P2_8 */ 85 pxa2x0_gpio_set_function(41, GPIO_ALT_FN_2_IN); /* USB_P2_7 */ 86 pxa2x0_gpio_set_function(89, GPIO_ALT_FN_2_OUT); /* USBHPEN<1> */ 87 pxa2x0_gpio_set_function(120, GPIO_ALT_FN_2_OUT); /* USBHPEN<2> */ 88 89 pxa2x0_clkman_config(CKEN_USBDC, 1); 90 91 pxaudc_enable(sc); 92 93 pxa2x0_gpio_set_bit(37); /* USB_P2_8 */ 94 95 sc->sc_powerhook = powerhook_establish(sc->sc_dev.dv_xname, 96 pxaudc_power, sc); 97 if (sc->sc_powerhook == NULL) { 98 aprint_error("%s: unable to establish powerhook.\n", 99 sc->sc_dev.dv_xname); 100 } 101 } 102 103 static int 104 pxaudc_detach(struct device *self, int flags) 105 { 106 struct pxaudc_softc *sc = (struct pxaudc_softc *)self; 107 108 if (sc->sc_powerhook) 109 powerhook_disestablish(sc->sc_powerhook); 110 111 if (sc->sc_size) { 112 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_size); 113 sc->sc_size = 0; 114 } 115 116 return 0; 117 } 118 119 static void 120 pxaudc_power(int why, void *arg) 121 { 122 struct pxaudc_softc *sc = (struct pxaudc_softc *)arg; 123 124 switch (why) { 125 case PWR_RESUME: 126 pxaudc_enable(sc); 127 break; 128 } 129 } 130 131 static void 132 pxaudc_enable(struct pxaudc_softc *sc) 133 { 134 uint32_t hr; 135 136 /* disable the controller */ 137 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR); 138 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCCR, 139 hr & ~USBDC_UDCCR_UDE); 140 141 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1); 142 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UDCICR1, 143 hr | USBDC_UDCICR1_IERS); 144 145 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 0); 146 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 147 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 148 hr | USBDC_UP2OCR_HXS); 149 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 150 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 151 hr | USBDC_UP2OCR_HXOE); 152 hr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR); 153 bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, 154 hr | USBDC_UP2OCR_DPPDE|USBDC_UP2OCR_DMPDE); 155 } 156