1/* $NetBSD: gxmci.c,v 1.3 2011/07/01 20:39:34 dyoung 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: gxmci.c,v 1.3 2011/07/01 20:39:34 dyoung Exp $"); 30 31#include <sys/param.h> 32#include <sys/device.h> 33#include <sys/systm.h> 34 35#include <sys/bus.h> 36#include <machine/intr.h> 37 38#include <arm/xscale/pxa2x0cpu.h> 39#include <arm/xscale/pxa2x0reg.h> 40#include <arm/xscale/pxa2x0var.h> 41#include <arm/xscale/pxa2x0_gpio.h> 42#include <arm/xscale/pxa2x0_mci.h> 43 44#include <dev/sdmmc/sdmmcreg.h> 45 46#if defined(PXAMCI_DEBUG) 47#define DPRINTF(s) printf s 48#else 49#define DPRINTF(s) 50#endif 51 52struct gxmci_softc { 53 struct pxamci_softc sc; 54}; 55 56static int pxamci_match(device_t, cfdata_t, void *); 57static void pxamci_attach(device_t, device_t, void *); 58 59CFATTACH_DECL_NEW(gxmci, sizeof(struct gxmci_softc), 60 pxamci_match, pxamci_attach, NULL, NULL); 61 62static uint32_t gxmci_get_ocr(void *); 63static int gxmci_set_power(void *, uint32_t); 64static int gxmci_card_detect(void *); 65static int gxmci_write_protect(void *); 66 67static int 68pxamci_match(device_t parent, cfdata_t match, void *aux) 69{ 70 struct pxaip_attach_args *pxa = aux; 71 static struct pxa2x0_gpioconf pxa25x_gxmci_gpioconf[] = { 72 { 8, GPIO_ALT_FN_1_OUT }, /* MMCCS0 */ 73 { 53, GPIO_ALT_FN_1_OUT }, /* MMCLK */ 74 { -1 } 75 }; 76 struct pxa2x0_gpioconf *gpioconf; 77 u_int reg; 78 int i; 79 80 if (strcmp(pxa->pxa_name, match->cf_name) != 0) 81 return 0; 82 83 /* 84 * Check GPIO configuration. If you use these, it is sure already 85 * to have been set by gxio. 86 */ 87 gpioconf = 88 CPU_IS_PXA250 ? pxa25x_gxmci_gpioconf : pxa27x_pxamci_gpioconf; 89 for (i = 0; gpioconf[i].pin != -1; i++) { 90 reg = pxa2x0_gpio_get_function(gpioconf[i].pin); 91 if (GPIO_FN(reg) != GPIO_FN(gpioconf[i].value) || 92 GPIO_FN_IS_OUT(reg) != GPIO_FN_IS_OUT(gpioconf[i].value)) 93 return 0; 94 } 95 pxa->pxa_size = PXA2X0_MMC_SIZE; 96 97 return 1; 98} 99 100static void 101pxamci_attach(device_t parent, device_t self, void *aux) 102{ 103 struct gxmci_softc *sc = device_private(self); 104 struct pxaip_attach_args *pxa = aux; 105 106 sc->sc.sc_tag.cookie = sc; 107 sc->sc.sc_tag.get_ocr = gxmci_get_ocr; 108 sc->sc.sc_tag.set_power = gxmci_set_power; 109 sc->sc.sc_tag.card_detect = gxmci_card_detect; 110 sc->sc.sc_tag.write_protect = gxmci_write_protect; 111 sc->sc.sc_caps = 0; 112 113 if (pxamci_attach_sub(self, pxa)) { 114 aprint_error_dev(self, "unable to attach MMC controller\n"); 115 } 116 117 if (!pmf_device_register(self, NULL, NULL)) { 118 aprint_error_dev(self, "couldn't establish power handler\n"); 119 } 120} 121 122static uint32_t 123gxmci_get_ocr(void *arg) 124{ 125 126 return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V; 127} 128 129static int 130gxmci_set_power(void *arg, uint32_t ocr) 131{ 132 133 return 0; 134} 135 136/* 137 * Return non-zero if the card is currently inserted. 138 */ 139static int 140gxmci_card_detect(void *arg) 141{ 142 143 return 1; 144} 145 146/* 147 * Return non-zero if the card is currently write-protected. 148 */ 149static int 150gxmci_write_protect(void *arg) 151{ 152 153 return 0; 154} 155