1/* $NetBSD: imx51_esdhc.c,v 1.4 2018/06/06 01:49:07 maya Exp $ */ 2 3/*- 4 * Copyright (c) 2012 Genetec Corporation. All rights reserved. 5 * Written by Hiroyuki Bessho for Genetec Corporation. 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 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials provided 15 * with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 20 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS 21 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 27 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: imx51_esdhc.c,v 1.4 2018/06/06 01:49:07 maya Exp $"); 34 35#include "opt_imx.h" 36 37#include <sys/param.h> 38#include <sys/device.h> 39#include <sys/systm.h> 40#include <sys/bus.h> 41#include <sys/pmf.h> 42 43#include <machine/intr.h> 44 45#include <dev/sdmmc/sdhcvar.h> 46#include <dev/sdmmc/sdmmcvar.h> 47 48#include <arm/imx/imx51reg.h> 49#include <arm/imx/imx51var.h> 50#include <arm/imx/imx51_ccmvar.h> 51 52struct sdhc_axi_softc { 53 struct sdhc_softc sc_sdhc; 54 /* we have only one slot */ 55 struct sdhc_host *sc_hosts[1]; 56 57 void *sc_ih; 58}; 59 60static int sdhc_match(device_t, cfdata_t, void *); 61static void sdhc_attach(device_t, device_t, void *); 62 63CFATTACH_DECL_NEW(sdhc_axi, sizeof(struct sdhc_axi_softc), 64 sdhc_match, sdhc_attach, NULL, NULL); 65 66static int 67sdhc_match(device_t parent, cfdata_t cf, void *aux) 68{ 69 70 struct axi_attach_args *aa = aux; 71 72 switch (aa->aa_addr) { 73 case ESDHC1_BASE: 74 case ESDHC2_BASE: 75 case ESDHC3_BASE: 76 case ESDHC4_BASE: 77 return 1; 78 } 79 80 return 0; 81} 82 83static void 84sdhc_attach(device_t parent, device_t self, void *aux) 85{ 86 struct sdhc_axi_softc *sc = device_private(self); 87 struct axi_attach_args *aa = aux; 88 bus_space_tag_t iot = aa->aa_iot; 89 bus_space_handle_t ioh; 90 u_int perclk = 0; 91 92 sc->sc_sdhc.sc_dev = self; 93 94 sc->sc_sdhc.sc_dmat = aa->aa_dmat; 95 96 if (bus_space_map(iot, aa->aa_addr, ESDHC_SIZE, 0, &ioh)) { 97 aprint_error_dev(self, "can't map\n"); 98 return; 99 } 100 101 aprint_normal(": SD/MMC host controller\n"); 102 aprint_naive("\n"); 103 sc->sc_sdhc.sc_host = sc->sc_hosts; 104 /* base clock frequency in kHz */ 105 switch (aa->aa_addr) { 106 case ESDHC1_BASE: 107 perclk = imx51_get_clock(IMX51CLK_ESDHC1_CLK_ROOT); 108 break; 109 case ESDHC2_BASE: 110 perclk = imx51_get_clock(IMX51CLK_ESDHC2_CLK_ROOT); 111 break; 112 case ESDHC3_BASE: 113 perclk = imx51_get_clock(IMX51CLK_ESDHC3_CLK_ROOT); 114 break; 115 case ESDHC4_BASE: 116 perclk = imx51_get_clock(IMX51CLK_ESDHC4_CLK_ROOT); 117 break; 118 } 119 sc->sc_sdhc.sc_clkbase = perclk / 1000; 120 sc->sc_sdhc.sc_flags |= SDHC_FLAG_USE_DMA; 121 sc->sc_sdhc.sc_flags |= SDHC_FLAG_HAVE_DVS | 122 SDHC_FLAG_NO_PWR0 | 123 SDHC_FLAG_32BIT_ACCESS | 124 SDHC_FLAG_ENHANCED; 125 126 sc->sc_ih = intr_establish(aa->aa_irq, IPL_SDMMC, IST_LEVEL, 127 sdhc_intr, &sc->sc_sdhc); 128 129 if (sc->sc_ih == NULL) { 130 aprint_error_dev(self, "can't establish interrupt\n"); 131 return; 132 } 133 134 if (sdhc_host_found(&sc->sc_sdhc, iot, ioh, ESDHC_SIZE)) { 135 aprint_error_dev(self, "can't initialize host\n"); 136 return; 137 } 138 139 if (!pmf_device_register1(self, sdhc_suspend, sdhc_resume, 140 sdhc_shutdown)) { 141 aprint_error_dev(self, 142 "can't establish power hook\n"); 143 } 144} 145