1 /* $NetBSD: nbpmci.c,v 1.2 2012/01/21 19:44:29 nonaka Exp $ */ 2 3 /*- 4 * Copyright (C) 2007 NONAKA Kimihiro <nonaka@netbsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: nbpmci.c,v 1.2 2012/01/21 19:44:29 nonaka Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 34 #include <machine/platid.h> 35 #include <machine/platid_mask.h> 36 37 #include <arm/xscale/pxa2x0var.h> 38 #include <arm/xscale/pxa2x0_gpio.h> 39 #include <arm/xscale/pxa2x0_mci.h> 40 41 #include <dev/sdmmc/sdmmcreg.h> 42 43 44 static int pxamci_match(device_t, cfdata_t, void *); 45 static void pxamci_attach(device_t, device_t, void *); 46 47 static int nbpmci_intr(void *); 48 49 static uint32_t nbpmci_get_ocr(void *); 50 static int nbpmci_set_power(void *, uint32_t); 51 static int nbpmci_card_detect(void *); 52 static int nbpmci_write_protect(void *); 53 54 CFATTACH_DECL_NEW(nbpmci, sizeof(struct pxamci_softc), 55 pxamci_match, pxamci_attach, NULL, NULL); 56 57 /* ARGSUSED */ 58 static int 59 pxamci_match(device_t parent, cfdata_t match, void *aux) 60 { 61 struct pxaip_attach_args *pxa = aux; 62 63 if (strcmp(pxa->pxa_name, match->cf_name) != 0 || 64 !platid_match(&platid, &platid_mask_MACH_PSIONTEKLOGIX_NETBOOK_PRO)) 65 return 0; 66 67 pxa->pxa_size = PXA2X0_MMC_SIZE; 68 69 return 1; 70 } 71 72 /* ARGSUSED */ 73 static void 74 pxamci_attach(device_t parent, device_t self, void *aux) 75 { 76 struct pxamci_softc *sc = device_private(self); 77 struct pxaip_attach_args *pxa = aux; 78 void *ih; 79 80 pxa2x0_gpio_set_function(9, GPIO_IN); 81 ih = pxa2x0_gpio_intr_establish(9, IST_EDGE_BOTH, IPL_BIO, 82 nbpmci_intr, sc); 83 if (ih == NULL) { 84 aprint_error_dev(self, 85 "unable to establish card detect interrupt\n"); 86 return; 87 } 88 89 sc->sc_tag.cookie = sc; 90 sc->sc_tag.get_ocr = nbpmci_get_ocr; 91 sc->sc_tag.set_power = nbpmci_set_power; 92 sc->sc_tag.card_detect = nbpmci_card_detect; 93 sc->sc_tag.write_protect = nbpmci_write_protect; 94 sc->sc_caps = 0; 95 96 if (pxamci_attach_sub(self, pxa)) 97 aprint_error_dev(self, "unable to attach MMC controller\n"); 98 99 if (!pmf_device_register(self, NULL, NULL)) 100 aprint_error_dev(self, "couldn't establish power handler\n"); 101 } 102 103 static int 104 nbpmci_intr(void *arg) 105 { 106 struct pxamci_softc *sc = (struct pxamci_softc *)arg; 107 108 pxa2x0_gpio_clear_intr(9); 109 110 pxamci_card_detect_event(sc); 111 112 return 1; 113 } 114 115 /* ARGSUSED */ 116 static uint32_t 117 nbpmci_get_ocr(void *arg) 118 { 119 120 return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V; 121 } 122 123 /* ARGSUSED */ 124 static int 125 nbpmci_set_power(void *arg, uint32_t ocr) 126 { 127 128 // nbp_pcon_command(I2C_SETMMCPOWER, vdd_bits ? 1 : 0, 0, NULL); 129 return 0; 130 } 131 132 /* 133 * Return non-zero if the card is currently inserted. 134 */ 135 /* ARGSUSED */ 136 static int 137 nbpmci_card_detect(void *arg) 138 { 139 140 if (pxa2x0_gpio_get_bit(9)) 141 return 0; 142 return 1; 143 } 144 145 /* 146 * Return non-zero if the card is currently write-protected. 147 */ 148 /* ARGSUSED */ 149 static int 150 nbpmci_write_protect(void *arg) 151 { 152 153 return 0; 154 } 155