wzero3_mci.c revision 1.2.4.2
1 1.2.4.2 yamt /* $NetBSD: wzero3_mci.c,v 1.2.4.2 2010/08/11 22:52:05 yamt Exp $ */ 2 1.2.4.2 yamt 3 1.2.4.2 yamt /*- 4 1.2.4.2 yamt * Copyright (c) 2009 NONAKA Kimihiro <nonaka (at) netbsd.org> 5 1.2.4.2 yamt * All rights reserved. 6 1.2.4.2 yamt * 7 1.2.4.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.2.4.2 yamt * modification, are permitted provided that the following conditions 9 1.2.4.2 yamt * are met: 10 1.2.4.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.2.4.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.2.4.2 yamt * documentation and/or other materials provided with the distribution. 15 1.2.4.2 yamt * 16 1.2.4.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 1.2.4.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.2.4.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.2.4.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 1.2.4.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.2.4.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.2.4.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.2.4.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.2.4.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.4.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.4.2 yamt * SUCH DAMAGE. 27 1.2.4.2 yamt */ 28 1.2.4.2 yamt 29 1.2.4.2 yamt #include <sys/cdefs.h> 30 1.2.4.2 yamt __KERNEL_RCSID(0, "$NetBSD: wzero3_mci.c,v 1.2.4.2 2010/08/11 22:52:05 yamt Exp $"); 31 1.2.4.2 yamt 32 1.2.4.2 yamt #include <sys/param.h> 33 1.2.4.2 yamt #include <sys/device.h> 34 1.2.4.2 yamt #include <sys/systm.h> 35 1.2.4.2 yamt #include <sys/pmf.h> 36 1.2.4.2 yamt 37 1.2.4.2 yamt #include <machine/bus.h> 38 1.2.4.2 yamt #include <machine/bootinfo.h> 39 1.2.4.2 yamt #include <machine/platid.h> 40 1.2.4.2 yamt #include <machine/platid_mask.h> 41 1.2.4.2 yamt 42 1.2.4.2 yamt #include <arm/xscale/pxa2x0cpu.h> 43 1.2.4.2 yamt #include <arm/xscale/pxa2x0reg.h> 44 1.2.4.2 yamt #include <arm/xscale/pxa2x0var.h> 45 1.2.4.2 yamt #include <arm/xscale/pxa2x0_gpio.h> 46 1.2.4.2 yamt #include <arm/xscale/pxa2x0_mci.h> 47 1.2.4.2 yamt 48 1.2.4.2 yamt #include <dev/sdmmc/sdmmcreg.h> 49 1.2.4.2 yamt 50 1.2.4.2 yamt #include <hpcarm/dev/wzero3_reg.h> 51 1.2.4.2 yamt 52 1.2.4.2 yamt #if defined(PXAMCI_DEBUG) 53 1.2.4.2 yamt #define DPRINTF(s) do { printf s; } while (0) 54 1.2.4.2 yamt #else 55 1.2.4.2 yamt #define DPRINTF(s) do {} while (0) 56 1.2.4.2 yamt #endif 57 1.2.4.2 yamt 58 1.2.4.2 yamt struct wzero3mci_softc { 59 1.2.4.2 yamt struct pxamci_softc sc; 60 1.2.4.2 yamt 61 1.2.4.2 yamt void *sc_detect_ih; 62 1.2.4.2 yamt int sc_detect_pin; 63 1.2.4.2 yamt int sc_power_pin; 64 1.2.4.2 yamt }; 65 1.2.4.2 yamt 66 1.2.4.2 yamt static int pxamci_match(device_t, cfdata_t, void *); 67 1.2.4.2 yamt static void pxamci_attach(device_t, device_t, void *); 68 1.2.4.2 yamt 69 1.2.4.2 yamt CFATTACH_DECL_NEW(wzero3mci, sizeof(struct wzero3mci_softc), 70 1.2.4.2 yamt pxamci_match, pxamci_attach, NULL, NULL); 71 1.2.4.2 yamt 72 1.2.4.2 yamt static int wzero3mci_intr(void *arg); 73 1.2.4.2 yamt 74 1.2.4.2 yamt static uint32_t wzero3mci_get_ocr(void *); 75 1.2.4.2 yamt static int wzero3mci_set_power(void *, uint32_t); 76 1.2.4.2 yamt static int wzero3mci_card_detect(void *); 77 1.2.4.2 yamt static int wzero3mci_write_protect(void *); 78 1.2.4.2 yamt 79 1.2.4.2 yamt struct wzero3mci_model { 80 1.2.4.2 yamt platid_mask_t *platid; 81 1.2.4.2 yamt int detect_pin; /* card detect pin# */ 82 1.2.4.2 yamt int power_pin; /* card power pin # */ 83 1.2.4.2 yamt } wzero3mci_table[] = { 84 1.2.4.2 yamt /* WS003SH */ 85 1.2.4.2 yamt { 86 1.2.4.2 yamt &platid_mask_MACH_SHARP_WZERO3_WS003SH, 87 1.2.4.2 yamt GPIO_WS003SH_SD_DETECT, 88 1.2.4.2 yamt GPIO_WS003SH_SD_POWER, 89 1.2.4.2 yamt }, 90 1.2.4.2 yamt /* WS004SH */ 91 1.2.4.2 yamt { 92 1.2.4.2 yamt &platid_mask_MACH_SHARP_WZERO3_WS004SH, 93 1.2.4.2 yamt GPIO_WS003SH_SD_DETECT, 94 1.2.4.2 yamt GPIO_WS003SH_SD_POWER, 95 1.2.4.2 yamt }, 96 1.2.4.2 yamt /* WS007SH */ 97 1.2.4.2 yamt { 98 1.2.4.2 yamt &platid_mask_MACH_SHARP_WZERO3_WS007SH, 99 1.2.4.2 yamt GPIO_WS007SH_SD_DETECT, 100 1.2.4.2 yamt GPIO_WS007SH_SD_POWER, 101 1.2.4.2 yamt }, 102 1.2.4.2 yamt /* WS011SH */ 103 1.2.4.2 yamt { 104 1.2.4.2 yamt &platid_mask_MACH_SHARP_WZERO3_WS011SH, 105 1.2.4.2 yamt GPIO_WS011SH_SD_DETECT, 106 1.2.4.2 yamt GPIO_WS011SH_SD_POWER, 107 1.2.4.2 yamt }, 108 1.2.4.2 yamt /* WS0020H */ 109 1.2.4.2 yamt { 110 1.2.4.2 yamt &platid_mask_MACH_SHARP_WZERO3_WS020SH, 111 1.2.4.2 yamt GPIO_WS020SH_SD_DETECT, 112 1.2.4.2 yamt GPIO_WS020SH_SD_POWER, 113 1.2.4.2 yamt }, 114 1.2.4.2 yamt 115 1.2.4.2 yamt { 116 1.2.4.2 yamt NULL, -1, -1 117 1.2.4.2 yamt }, 118 1.2.4.2 yamt }; 119 1.2.4.2 yamt 120 1.2.4.2 yamt 121 1.2.4.2 yamt static const struct wzero3mci_model * 122 1.2.4.2 yamt wzero3mci_lookup(void) 123 1.2.4.2 yamt { 124 1.2.4.2 yamt const struct wzero3mci_model *model; 125 1.2.4.2 yamt 126 1.2.4.2 yamt for (model = wzero3mci_table; model->platid != NULL; model++) { 127 1.2.4.2 yamt if (platid_match(&platid, model->platid)) { 128 1.2.4.2 yamt return model; 129 1.2.4.2 yamt } 130 1.2.4.2 yamt } 131 1.2.4.2 yamt return NULL; 132 1.2.4.2 yamt } 133 1.2.4.2 yamt 134 1.2.4.2 yamt static int 135 1.2.4.2 yamt pxamci_match(device_t parent, cfdata_t cf, void *aux) 136 1.2.4.2 yamt { 137 1.2.4.2 yamt 138 1.2.4.2 yamt if (strcmp(cf->cf_name, "pxamci") != 0) 139 1.2.4.2 yamt return 0; 140 1.2.4.2 yamt if (wzero3mci_lookup() == NULL) 141 1.2.4.2 yamt return 0; 142 1.2.4.2 yamt return 1; 143 1.2.4.2 yamt } 144 1.2.4.2 yamt 145 1.2.4.2 yamt static void 146 1.2.4.2 yamt pxamci_attach(device_t parent, device_t self, void *aux) 147 1.2.4.2 yamt { 148 1.2.4.2 yamt struct wzero3mci_softc *sc = device_private(self); 149 1.2.4.2 yamt struct pxaip_attach_args *pxa = aux; 150 1.2.4.2 yamt const struct wzero3mci_model *model; 151 1.2.4.2 yamt 152 1.2.4.2 yamt sc->sc.sc_dev = self; 153 1.2.4.2 yamt 154 1.2.4.2 yamt model = wzero3mci_lookup(); 155 1.2.4.2 yamt if (model == NULL) { 156 1.2.4.2 yamt aprint_error(": Unknown model."); 157 1.2.4.2 yamt return; 158 1.2.4.2 yamt } 159 1.2.4.2 yamt 160 1.2.4.2 yamt sc->sc_detect_pin = model->detect_pin; 161 1.2.4.2 yamt sc->sc_power_pin = model->power_pin; 162 1.2.4.2 yamt 163 1.2.4.2 yamt /* Establish SD detect interrupt */ 164 1.2.4.2 yamt if (sc->sc_detect_pin >= 0) { 165 1.2.4.2 yamt pxa2x0_gpio_set_function(sc->sc_detect_pin, GPIO_IN); 166 1.2.4.2 yamt sc->sc_detect_ih = pxa2x0_gpio_intr_establish(sc->sc_detect_pin, 167 1.2.4.2 yamt IST_EDGE_BOTH, IPL_BIO, wzero3mci_intr, sc); 168 1.2.4.2 yamt if (sc->sc_detect_ih == NULL) { 169 1.2.4.2 yamt aprint_error_dev(self, 170 1.2.4.2 yamt "unable to establish card detect interrupt\n"); 171 1.2.4.2 yamt return; 172 1.2.4.2 yamt } 173 1.2.4.2 yamt } 174 1.2.4.2 yamt 175 1.2.4.2 yamt sc->sc.sc_tag.cookie = sc; 176 1.2.4.2 yamt sc->sc.sc_tag.get_ocr = wzero3mci_get_ocr; 177 1.2.4.2 yamt sc->sc.sc_tag.set_power = wzero3mci_set_power; 178 1.2.4.2 yamt sc->sc.sc_tag.card_detect = wzero3mci_card_detect; 179 1.2.4.2 yamt sc->sc.sc_tag.write_protect = wzero3mci_write_protect; 180 1.2.4.2 yamt sc->sc.sc_caps = PMC_CAPS_4BIT; 181 1.2.4.2 yamt 182 1.2.4.2 yamt if (pxamci_attach_sub(self, pxa)) { 183 1.2.4.2 yamt aprint_error_dev(self, "unable to attach MMC controller\n"); 184 1.2.4.2 yamt goto free_intr; 185 1.2.4.2 yamt } 186 1.2.4.2 yamt 187 1.2.4.2 yamt if (!pmf_device_register(self, NULL, NULL)) { 188 1.2.4.2 yamt aprint_error_dev(self, "couldn't establish power handler\n"); 189 1.2.4.2 yamt } 190 1.2.4.2 yamt 191 1.2.4.2 yamt return; 192 1.2.4.2 yamt 193 1.2.4.2 yamt free_intr: 194 1.2.4.2 yamt pxa2x0_gpio_intr_disestablish(sc->sc_detect_ih); 195 1.2.4.2 yamt sc->sc_detect_ih = NULL; 196 1.2.4.2 yamt } 197 1.2.4.2 yamt 198 1.2.4.2 yamt static int 199 1.2.4.2 yamt wzero3mci_intr(void *arg) 200 1.2.4.2 yamt { 201 1.2.4.2 yamt struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg; 202 1.2.4.2 yamt 203 1.2.4.2 yamt pxa2x0_gpio_clear_intr(sc->sc_detect_pin); 204 1.2.4.2 yamt 205 1.2.4.2 yamt pxamci_card_detect_event(&sc->sc); 206 1.2.4.2 yamt 207 1.2.4.2 yamt return 1; 208 1.2.4.2 yamt } 209 1.2.4.2 yamt 210 1.2.4.2 yamt /*ARGSUSED*/ 211 1.2.4.2 yamt static uint32_t 212 1.2.4.2 yamt wzero3mci_get_ocr(void *arg) 213 1.2.4.2 yamt { 214 1.2.4.2 yamt 215 1.2.4.2 yamt return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V; 216 1.2.4.2 yamt } 217 1.2.4.2 yamt 218 1.2.4.2 yamt static int 219 1.2.4.2 yamt wzero3mci_set_power(void *arg, uint32_t ocr) 220 1.2.4.2 yamt { 221 1.2.4.2 yamt struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg; 222 1.2.4.2 yamt int error = 0; 223 1.2.4.2 yamt 224 1.2.4.2 yamt if (sc->sc_power_pin >= 0) { 225 1.2.4.2 yamt if (ISSET(ocr, MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V)) { 226 1.2.4.2 yamt /* power on */ 227 1.2.4.2 yamt pxa2x0_gpio_set_bit(sc->sc_power_pin); 228 1.2.4.2 yamt } else if (ocr == 0) { 229 1.2.4.2 yamt /* power off */ 230 1.2.4.2 yamt pxa2x0_gpio_clear_bit(sc->sc_power_pin); 231 1.2.4.2 yamt } else { 232 1.2.4.2 yamt aprint_error_dev(sc->sc.sc_dev, 233 1.2.4.2 yamt "unsupported OCR (%#x)\n", ocr); 234 1.2.4.2 yamt error = EINVAL; 235 1.2.4.2 yamt } 236 1.2.4.2 yamt } 237 1.2.4.2 yamt return error; 238 1.2.4.2 yamt } 239 1.2.4.2 yamt 240 1.2.4.2 yamt /* 241 1.2.4.2 yamt * Return non-zero if the card is currently inserted. 242 1.2.4.2 yamt */ 243 1.2.4.2 yamt static int 244 1.2.4.2 yamt wzero3mci_card_detect(void *arg) 245 1.2.4.2 yamt { 246 1.2.4.2 yamt struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg; 247 1.2.4.2 yamt 248 1.2.4.2 yamt if (sc->sc_detect_pin >= 0) { 249 1.2.4.2 yamt if (pxa2x0_gpio_get_bit(sc->sc_detect_pin)) 250 1.2.4.2 yamt return 0; 251 1.2.4.2 yamt } 252 1.2.4.2 yamt return 1; 253 1.2.4.2 yamt } 254 1.2.4.2 yamt 255 1.2.4.2 yamt /* 256 1.2.4.2 yamt * Return non-zero if the card is currently write-protected. 257 1.2.4.2 yamt */ 258 1.2.4.2 yamt /*ARGSUSED*/ 259 1.2.4.2 yamt static int 260 1.2.4.2 yamt wzero3mci_write_protect(void *arg) 261 1.2.4.2 yamt { 262 1.2.4.2 yamt 263 1.2.4.2 yamt return 0; 264 1.2.4.2 yamt } 265
Indexes created Fri Sep 26 20:09:58 GMT 2025