zmci.c revision 1.1.2.2
1 1.1.2.2 skrll /* $NetBSD: zmci.c,v 1.1.2.2 2009/04/28 07:35:02 skrll Exp $ */ 2 1.1.2.2 skrll 3 1.1.2.2 skrll /*- 4 1.1.2.2 skrll * Copyright (c) 2006-2008 NONAKA Kimihiro <nonaka (at) netbsd.org> 5 1.1.2.2 skrll * All rights reserved. 6 1.1.2.2 skrll * 7 1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 skrll * modification, are permitted provided that the following conditions 9 1.1.2.2 skrll * are met: 10 1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.1.2.2 skrll * 16 1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 1.1.2.2 skrll * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1.2.2 skrll * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1.2.2 skrll * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 1.1.2.2 skrll * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.1.2.2 skrll * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.1.2.2 skrll * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.1.2.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.1.2.2 skrll * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 skrll * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 skrll * SUCH DAMAGE. 27 1.1.2.2 skrll */ 28 1.1.2.2 skrll 29 1.1.2.2 skrll #include <sys/cdefs.h> 30 1.1.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: zmci.c,v 1.1.2.2 2009/04/28 07:35:02 skrll Exp $"); 31 1.1.2.2 skrll 32 1.1.2.2 skrll #include <sys/param.h> 33 1.1.2.2 skrll #include <sys/device.h> 34 1.1.2.2 skrll #include <sys/systm.h> 35 1.1.2.2 skrll #include <sys/bus.h> 36 1.1.2.2 skrll #include <sys/pmf.h> 37 1.1.2.2 skrll 38 1.1.2.2 skrll #include <machine/intr.h> 39 1.1.2.2 skrll 40 1.1.2.2 skrll #include <arm/xscale/pxa2x0cpu.h> 41 1.1.2.2 skrll #include <arm/xscale/pxa2x0reg.h> 42 1.1.2.2 skrll #include <arm/xscale/pxa2x0var.h> 43 1.1.2.2 skrll #include <arm/xscale/pxa2x0_gpio.h> 44 1.1.2.2 skrll #include <arm/xscale/pxa2x0_mci.h> 45 1.1.2.2 skrll 46 1.1.2.2 skrll #include <dev/sdmmc/sdmmcreg.h> 47 1.1.2.2 skrll 48 1.1.2.2 skrll #include <zaurus/dev/scoopreg.h> 49 1.1.2.2 skrll #include <zaurus/dev/scoopvar.h> 50 1.1.2.2 skrll 51 1.1.2.2 skrll #include <zaurus/zaurus/zaurus_reg.h> 52 1.1.2.2 skrll #include <zaurus/zaurus/zaurus_var.h> 53 1.1.2.2 skrll 54 1.1.2.2 skrll #if defined(PXAMCI_DEBUG) 55 1.1.2.2 skrll #define DPRINTF(s) do { printf s; } while (0) 56 1.1.2.2 skrll #else 57 1.1.2.2 skrll #define DPRINTF(s) do {} while (0) 58 1.1.2.2 skrll #endif 59 1.1.2.2 skrll 60 1.1.2.2 skrll struct zmci_softc { 61 1.1.2.2 skrll struct pxamci_softc sc; 62 1.1.2.2 skrll 63 1.1.2.2 skrll void *sc_detect_ih; 64 1.1.2.2 skrll int sc_detect_pin; 65 1.1.2.2 skrll int sc_wp_pin; 66 1.1.2.2 skrll }; 67 1.1.2.2 skrll 68 1.1.2.2 skrll static int pxamci_match(device_t, cfdata_t, void *); 69 1.1.2.2 skrll static void pxamci_attach(device_t, device_t, void *); 70 1.1.2.2 skrll 71 1.1.2.2 skrll CFATTACH_DECL_NEW(zmci, sizeof(struct zmci_softc), 72 1.1.2.2 skrll pxamci_match, pxamci_attach, NULL, NULL); 73 1.1.2.2 skrll 74 1.1.2.2 skrll static int zmci_intr(void *arg); 75 1.1.2.2 skrll 76 1.1.2.2 skrll static uint32_t zmci_get_ocr(void *); 77 1.1.2.2 skrll static int zmci_set_power(void *, uint32_t); 78 1.1.2.2 skrll static int zmci_card_detect(void *); 79 1.1.2.2 skrll static int zmci_write_protect(void *); 80 1.1.2.2 skrll 81 1.1.2.2 skrll static int 82 1.1.2.2 skrll pxamci_match(device_t parent, cfdata_t cf, void *aux) 83 1.1.2.2 skrll { 84 1.1.2.2 skrll 85 1.1.2.2 skrll if (!ZAURUS_ISC3000) 86 1.1.2.2 skrll return 0; 87 1.1.2.2 skrll return 1; 88 1.1.2.2 skrll } 89 1.1.2.2 skrll 90 1.1.2.2 skrll static void 91 1.1.2.2 skrll pxamci_attach(device_t parent, device_t self, void *aux) 92 1.1.2.2 skrll { 93 1.1.2.2 skrll struct zmci_softc *sc = device_private(self); 94 1.1.2.2 skrll struct pxaip_attach_args *pxa = aux; 95 1.1.2.2 skrll 96 1.1.2.2 skrll sc->sc.sc_dev = self; 97 1.1.2.2 skrll 98 1.1.2.2 skrll if (ZAURUS_ISC3000) { 99 1.1.2.2 skrll sc->sc_detect_pin = C3000_GPIO_SD_DETECT_PIN; 100 1.1.2.2 skrll sc->sc_wp_pin = C3000_GPIO_SD_WP_PIN; 101 1.1.2.2 skrll pxa2x0_gpio_set_function(sc->sc_detect_pin, GPIO_IN); 102 1.1.2.2 skrll pxa2x0_gpio_set_function(sc->sc_wp_pin, GPIO_IN); 103 1.1.2.2 skrll } else { 104 1.1.2.2 skrll /* XXX: C7x0/C8x0 */ 105 1.1.2.2 skrll return; 106 1.1.2.2 skrll } 107 1.1.2.2 skrll 108 1.1.2.2 skrll /* Establish SD detect interrupt */ 109 1.1.2.2 skrll sc->sc_detect_ih = pxa2x0_gpio_intr_establish(sc->sc_detect_pin, 110 1.1.2.2 skrll IST_EDGE_BOTH, IPL_BIO, zmci_intr, sc); 111 1.1.2.2 skrll if (sc->sc_detect_ih == NULL) { 112 1.1.2.2 skrll aprint_error_dev(self, 113 1.1.2.2 skrll "unable to establish nSD_DETECT interrupt\n"); 114 1.1.2.2 skrll return; 115 1.1.2.2 skrll } 116 1.1.2.2 skrll 117 1.1.2.2 skrll sc->sc.sc_tag.cookie = sc; 118 1.1.2.2 skrll sc->sc.sc_tag.get_ocr = zmci_get_ocr; 119 1.1.2.2 skrll sc->sc.sc_tag.set_power = zmci_set_power; 120 1.1.2.2 skrll sc->sc.sc_tag.card_detect = zmci_card_detect; 121 1.1.2.2 skrll sc->sc.sc_tag.write_protect = zmci_write_protect; 122 1.1.2.2 skrll sc->sc.sc_caps = 0; 123 1.1.2.2 skrll 124 1.1.2.2 skrll if (pxamci_attach_sub(self, pxa)) { 125 1.1.2.2 skrll aprint_error_dev(self, "unable to attach MMC controller\n"); 126 1.1.2.2 skrll goto free_intr; 127 1.1.2.2 skrll } 128 1.1.2.2 skrll 129 1.1.2.2 skrll if (!pmf_device_register(self, NULL, NULL)) { 130 1.1.2.2 skrll aprint_error_dev(self, "couldn't establish power handler\n"); 131 1.1.2.2 skrll } 132 1.1.2.2 skrll 133 1.1.2.2 skrll return; 134 1.1.2.2 skrll 135 1.1.2.2 skrll free_intr: 136 1.1.2.2 skrll pxa2x0_gpio_intr_disestablish(sc->sc_detect_ih); 137 1.1.2.2 skrll sc->sc_detect_ih = NULL; 138 1.1.2.2 skrll } 139 1.1.2.2 skrll 140 1.1.2.2 skrll static int 141 1.1.2.2 skrll zmci_intr(void *arg) 142 1.1.2.2 skrll { 143 1.1.2.2 skrll struct zmci_softc *sc = (struct zmci_softc *)arg; 144 1.1.2.2 skrll 145 1.1.2.2 skrll pxa2x0_gpio_clear_intr(sc->sc_detect_pin); 146 1.1.2.2 skrll 147 1.1.2.2 skrll pxamci_card_detect_event(&sc->sc); 148 1.1.2.2 skrll 149 1.1.2.2 skrll return 1; 150 1.1.2.2 skrll } 151 1.1.2.2 skrll 152 1.1.2.2 skrll static uint32_t 153 1.1.2.2 skrll zmci_get_ocr(void *arg) 154 1.1.2.2 skrll { 155 1.1.2.2 skrll 156 1.1.2.2 skrll return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V; 157 1.1.2.2 skrll } 158 1.1.2.2 skrll 159 1.1.2.2 skrll static int 160 1.1.2.2 skrll zmci_set_power(void *arg, uint32_t ocr) 161 1.1.2.2 skrll { 162 1.1.2.2 skrll struct zmci_softc *sc = (struct zmci_softc *)arg; 163 1.1.2.2 skrll 164 1.1.2.2 skrll if (ISSET(ocr, MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V)) { 165 1.1.2.2 skrll scoop_set_sdmmc_power(1); 166 1.1.2.2 skrll return 0; 167 1.1.2.2 skrll } 168 1.1.2.2 skrll 169 1.1.2.2 skrll if (ocr != 0) { 170 1.1.2.2 skrll printf("%s: zmci_set_power(): unsupported OCR (%#x)\n", 171 1.1.2.2 skrll device_xname(sc->sc.sc_dev), ocr); 172 1.1.2.2 skrll return EINVAL; 173 1.1.2.2 skrll } 174 1.1.2.2 skrll 175 1.1.2.2 skrll /* power off */ 176 1.1.2.2 skrll scoop_set_sdmmc_power(0); 177 1.1.2.2 skrll return 0; 178 1.1.2.2 skrll } 179 1.1.2.2 skrll 180 1.1.2.2 skrll /* 181 1.1.2.2 skrll * Return non-zero if the card is currently inserted. 182 1.1.2.2 skrll */ 183 1.1.2.2 skrll static int 184 1.1.2.2 skrll zmci_card_detect(void *arg) 185 1.1.2.2 skrll { 186 1.1.2.2 skrll struct zmci_softc *sc = (struct zmci_softc *)arg; 187 1.1.2.2 skrll 188 1.1.2.2 skrll if (!pxa2x0_gpio_get_bit(sc->sc_detect_pin)) 189 1.1.2.2 skrll return 1; 190 1.1.2.2 skrll return 0; 191 1.1.2.2 skrll } 192 1.1.2.2 skrll 193 1.1.2.2 skrll /* 194 1.1.2.2 skrll * Return non-zero if the card is currently write-protected. 195 1.1.2.2 skrll */ 196 1.1.2.2 skrll static int 197 1.1.2.2 skrll zmci_write_protect(void *arg) 198 1.1.2.2 skrll { 199 1.1.2.2 skrll struct zmci_softc *sc = (struct zmci_softc *)arg; 200 1.1.2.2 skrll 201 1.1.2.2 skrll if (pxa2x0_gpio_get_bit(sc->sc_wp_pin)) 202 1.1.2.2 skrll return 1; 203 1.1.2.2 skrll return 0; 204 1.1.2.2 skrll } 205
Indexes created Thu Oct 23 22:10:10 GMT 2025