g42xxeb_mci.c revision 1.2.2.2
1 1.2.2.2 yamt /* $NetBSD: g42xxeb_mci.c,v 1.2.2.2 2010/08/11 22:51:51 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /*- 4 1.2.2.2 yamt * Copyright (c) 2009 Genetec Corporation. All rights reserved. 5 1.2.2.2 yamt * Written by Hiroyuki Bessho for Genetec Corporation. 6 1.2.2.2 yamt * 7 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 yamt * modification, are permitted provided that the following conditions 9 1.2.2.2 yamt * are met: 10 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above 13 1.2.2.2 yamt * copyright notice, this list of conditions and the following 14 1.2.2.2 yamt * disclaimer in the documentation and/or other materials provided 15 1.2.2.2 yamt * with the distribution. 16 1.2.2.2 yamt * 17 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' 18 1.2.2.2 yamt * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 20 1.2.2.2 yamt * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS 21 1.2.2.2 yamt * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 1.2.2.2 yamt * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 1.2.2.2 yamt * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 24 1.2.2.2 yamt * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 1.2.2.2 yamt * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 1.2.2.2 yamt * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 27 1.2.2.2 yamt * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 1.2.2.2 yamt * SUCH DAMAGE. 29 1.2.2.2 yamt */ 30 1.2.2.2 yamt 31 1.2.2.2 yamt /* derived from zaurus/dev/zmci.c */ 32 1.2.2.2 yamt 33 1.2.2.2 yamt /*- 34 1.2.2.2 yamt * Copyright (c) 2006-2008 NONAKA Kimihiro <nonaka (at) netbsd.org> 35 1.2.2.2 yamt * All rights reserved. 36 1.2.2.2 yamt * 37 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 38 1.2.2.2 yamt * modification, are permitted provided that the following conditions 39 1.2.2.2 yamt * are met: 40 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 41 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 42 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 43 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 44 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 45 1.2.2.2 yamt * 46 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' 47 1.2.2.2 yamt * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 48 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 49 1.2.2.2 yamt * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS 50 1.2.2.2 yamt * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51 1.2.2.2 yamt * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 52 1.2.2.2 yamt * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 53 1.2.2.2 yamt * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 54 1.2.2.2 yamt * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 55 1.2.2.2 yamt * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 56 1.2.2.2 yamt * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 1.2.2.2 yamt * SUCH DAMAGE. 58 1.2.2.2 yamt */ 59 1.2.2.2 yamt 60 1.2.2.2 yamt #include <sys/cdefs.h> 61 1.2.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: g42xxeb_mci.c,v 1.2.2.2 2010/08/11 22:51:51 yamt Exp $"); 62 1.2.2.2 yamt 63 1.2.2.2 yamt #include <sys/param.h> 64 1.2.2.2 yamt #include <sys/device.h> 65 1.2.2.2 yamt #include <sys/systm.h> 66 1.2.2.2 yamt #include <sys/bus.h> 67 1.2.2.2 yamt #include <sys/pmf.h> 68 1.2.2.2 yamt 69 1.2.2.2 yamt #include <machine/intr.h> 70 1.2.2.2 yamt 71 1.2.2.2 yamt #include <arm/xscale/pxa2x0cpu.h> 72 1.2.2.2 yamt #include <arm/xscale/pxa2x0reg.h> 73 1.2.2.2 yamt #include <arm/xscale/pxa2x0var.h> 74 1.2.2.2 yamt #include <arm/xscale/pxa2x0_gpio.h> 75 1.2.2.2 yamt #include <arm/xscale/pxa2x0_mci.h> 76 1.2.2.2 yamt 77 1.2.2.2 yamt #include <dev/sdmmc/sdmmcreg.h> 78 1.2.2.2 yamt 79 1.2.2.2 yamt #include <arm/xscale/pxa2x0var.h> 80 1.2.2.2 yamt #include <evbarm/g42xxeb/g42xxeb_var.h> 81 1.2.2.2 yamt 82 1.2.2.2 yamt struct g42xxeb_mci_softc { 83 1.2.2.2 yamt struct pxamci_softc sc_mci; 84 1.2.2.2 yamt 85 1.2.2.2 yamt bus_space_tag_t sc_obio_iot; 86 1.2.2.2 yamt bus_space_handle_t sc_obio_ioh; 87 1.2.2.2 yamt 88 1.2.2.2 yamt void *sc_detect_ih; 89 1.2.2.2 yamt }; 90 1.2.2.2 yamt 91 1.2.2.2 yamt static int pxamci_match(device_t, cfdata_t, void *); 92 1.2.2.2 yamt static void pxamci_attach(device_t, device_t, void *); 93 1.2.2.2 yamt 94 1.2.2.2 yamt CFATTACH_DECL_NEW(pxamci_obio, sizeof(struct g42xxeb_mci_softc), 95 1.2.2.2 yamt pxamci_match, pxamci_attach, NULL, NULL); 96 1.2.2.2 yamt 97 1.2.2.2 yamt static int g42xxeb_mci_intr(void *arg); 98 1.2.2.2 yamt 99 1.2.2.2 yamt static uint32_t g42xxeb_mci_get_ocr(void *); 100 1.2.2.2 yamt static int g42xxeb_mci_set_power(void *, uint32_t); 101 1.2.2.2 yamt static int g42xxeb_mci_card_detect(void *); 102 1.2.2.2 yamt static int g42xxeb_mci_write_protect(void *); 103 1.2.2.2 yamt 104 1.2.2.2 yamt static int 105 1.2.2.2 yamt pxamci_match(device_t parent, cfdata_t cf, void *aux) 106 1.2.2.2 yamt { 107 1.2.2.2 yamt 108 1.2.2.2 yamt if (strcmp(cf->cf_name, "pxamci") == 0) 109 1.2.2.2 yamt return 1; 110 1.2.2.2 yamt return 0; 111 1.2.2.2 yamt } 112 1.2.2.2 yamt 113 1.2.2.2 yamt struct pxa2x0_gpioconf g42xxeb_pxamci_gpioconf[] = { 114 1.2.2.2 yamt { 6, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCLK */ 115 1.2.2.2 yamt { 8, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCS0 */ 116 1.2.2.2 yamt { 9, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCS1 */ 117 1.2.2.2 yamt { -1 } 118 1.2.2.2 yamt }; 119 1.2.2.2 yamt 120 1.2.2.2 yamt 121 1.2.2.2 yamt static void 122 1.2.2.2 yamt pxamci_attach(device_t parent, device_t self, void *aux) 123 1.2.2.2 yamt { 124 1.2.2.2 yamt struct g42xxeb_mci_softc *sc = device_private(self); 125 1.2.2.2 yamt struct obio_attach_args *oba = aux; 126 1.2.2.2 yamt struct obio_softc *osc = device_private(parent); 127 1.2.2.2 yamt struct pxaip_attach_args pxa; 128 1.2.2.2 yamt struct pxa2x0_gpioconf *gpioconf[] = { 129 1.2.2.2 yamt g42xxeb_pxamci_gpioconf, 130 1.2.2.2 yamt NULL 131 1.2.2.2 yamt }; 132 1.2.2.2 yamt 133 1.2.2.2 yamt bus_space_tag_t iot = oba->oba_iot; 134 1.2.2.2 yamt 135 1.2.2.2 yamt sc->sc_mci.sc_dev = self; 136 1.2.2.2 yamt 137 1.2.2.2 yamt pxa2x0_gpio_config(gpioconf); 138 1.2.2.2 yamt 139 1.2.2.2 yamt /* Establish card detect interrupt */ 140 1.2.2.2 yamt sc->sc_detect_ih = obio_intr_establish(osc, G42XXEB_INT_MMCSD, 141 1.2.2.2 yamt IPL_BIO, IST_EDGE_BOTH, g42xxeb_mci_intr, sc); 142 1.2.2.2 yamt if (sc->sc_detect_ih == NULL) { 143 1.2.2.2 yamt aprint_error_dev(self, 144 1.2.2.2 yamt "unable to establish SD detect interrupt\n"); 145 1.2.2.2 yamt return; 146 1.2.2.2 yamt } 147 1.2.2.2 yamt 148 1.2.2.2 yamt sc->sc_mci.sc_tag.cookie = sc; 149 1.2.2.2 yamt sc->sc_mci.sc_tag.get_ocr = g42xxeb_mci_get_ocr; 150 1.2.2.2 yamt sc->sc_mci.sc_tag.set_power = g42xxeb_mci_set_power; 151 1.2.2.2 yamt sc->sc_mci.sc_tag.card_detect = g42xxeb_mci_card_detect; 152 1.2.2.2 yamt sc->sc_mci.sc_tag.write_protect = g42xxeb_mci_write_protect; 153 1.2.2.2 yamt sc->sc_mci.sc_caps = 0; 154 1.2.2.2 yamt 155 1.2.2.2 yamt pxa.pxa_iot = iot; /* actually, here we want I/O tag for 156 1.2.2.2 yamt pxaip, not for obio. */ 157 1.2.2.2 yamt 158 1.2.2.2 yamt #if 0 159 1.2.2.2 yamt /* pxamci_attach_sub() ignores following values and uses 160 1.2.2.2 yamt * constants. */ 161 1.2.2.2 yamt pxa.pxa_addr = PXA2X0_MMC_BASE; 162 1.2.2.2 yamt pxa.pxa_size = PXA2X0_MMC_SIZE; 163 1.2.2.2 yamt pxa.pxa_intr = PXA2X0_INT_MMC; 164 1.2.2.2 yamt #endif 165 1.2.2.2 yamt 166 1.2.2.2 yamt /* disable DMA for sdmmc for now. */ 167 1.2.2.2 yamt SET(sc->sc_mci.sc_caps, PMC_CAPS_NO_DMA); 168 1.2.2.2 yamt 169 1.2.2.2 yamt if (pxamci_attach_sub(self, &pxa)) { 170 1.2.2.2 yamt aprint_error_dev(self, 171 1.2.2.2 yamt "unable to attach MMC controller\n"); 172 1.2.2.2 yamt goto free_intr; 173 1.2.2.2 yamt } 174 1.2.2.2 yamt 175 1.2.2.2 yamt if (!pmf_device_register(self, NULL, NULL)) { 176 1.2.2.2 yamt aprint_error_dev(self, 177 1.2.2.2 yamt "couldn't establish power handler\n"); 178 1.2.2.2 yamt } 179 1.2.2.2 yamt 180 1.2.2.2 yamt sc->sc_obio_iot = iot; 181 1.2.2.2 yamt sc->sc_obio_ioh = osc->sc_obioreg_ioh; 182 1.2.2.2 yamt 183 1.2.2.2 yamt return; 184 1.2.2.2 yamt 185 1.2.2.2 yamt free_intr: 186 1.2.2.2 yamt obio_intr_disestablish(osc, G42XXEB_INT_MMCSD, sc->sc_detect_ih); 187 1.2.2.2 yamt sc->sc_detect_ih = NULL; 188 1.2.2.2 yamt } 189 1.2.2.2 yamt 190 1.2.2.2 yamt static int 191 1.2.2.2 yamt g42xxeb_mci_intr(void *arg) 192 1.2.2.2 yamt { 193 1.2.2.2 yamt struct g42xxeb_mci_softc *sc = (struct g42xxeb_mci_softc *)arg; 194 1.2.2.2 yamt 195 1.2.2.2 yamt pxamci_card_detect_event(&sc->sc_mci); 196 1.2.2.2 yamt 197 1.2.2.2 yamt return 1; 198 1.2.2.2 yamt } 199 1.2.2.2 yamt 200 1.2.2.2 yamt static uint32_t 201 1.2.2.2 yamt g42xxeb_mci_get_ocr(void *arg) 202 1.2.2.2 yamt { 203 1.2.2.2 yamt 204 1.2.2.2 yamt return MMC_OCR_3_2V_3_3V; 205 1.2.2.2 yamt } 206 1.2.2.2 yamt 207 1.2.2.2 yamt static int 208 1.2.2.2 yamt g42xxeb_mci_set_power(void *arg, uint32_t ocr) 209 1.2.2.2 yamt { 210 1.2.2.2 yamt /* nothing to do */ 211 1.2.2.2 yamt return 0; 212 1.2.2.2 yamt } 213 1.2.2.2 yamt 214 1.2.2.2 yamt /* 215 1.2.2.2 yamt * Return non-zero if the card is currently inserted. 216 1.2.2.2 yamt */ 217 1.2.2.2 yamt static int 218 1.2.2.2 yamt g42xxeb_mci_card_detect(void *arg) 219 1.2.2.2 yamt { 220 1.2.2.2 yamt struct g42xxeb_mci_softc *sc = (struct g42xxeb_mci_softc *)arg; 221 1.2.2.2 yamt uint16_t reg; 222 1.2.2.2 yamt 223 1.2.2.2 yamt reg = bus_space_read_2(sc->sc_obio_iot, sc->sc_obio_ioh, 224 1.2.2.2 yamt G42XXEB_INTSTS2); 225 1.2.2.2 yamt 226 1.2.2.2 yamt return !(reg & (1<<G42XXEB_INT_MMCSD)); 227 1.2.2.2 yamt } 228 1.2.2.2 yamt 229 1.2.2.2 yamt /* 230 1.2.2.2 yamt * Return non-zero if the card is currently write-protected. 231 1.2.2.2 yamt */ 232 1.2.2.2 yamt static int 233 1.2.2.2 yamt g42xxeb_mci_write_protect(void *arg) 234 1.2.2.2 yamt { 235 1.2.2.2 yamt struct g42xxeb_mci_softc *sc = (struct g42xxeb_mci_softc *)arg; 236 1.2.2.2 yamt uint16_t reg; 237 1.2.2.2 yamt 238 1.2.2.2 yamt reg = bus_space_read_2(sc->sc_obio_iot, sc->sc_obio_ioh, 239 1.2.2.2 yamt G42XXEB_WP); 240 1.2.2.2 yamt 241 1.2.2.2 yamt return reg & 1; 242 1.2.2.2 yamt } 243
Indexes created Mon Oct 27 17:09:47 GMT 2025