1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2021 Semihalf 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/kernel.h> 34 #include <sys/types.h> 35 #include <sys/taskqueue.h> 36 #include <sys/module.h> 37 38 #include <machine/bus.h> 39 40 #include <dev/ofw/ofw_bus.h> 41 #include <dev/ofw/ofw_bus_subr.h> 42 43 #include <dev/mmc/bridge.h> 44 #include <dev/mmc/mmcbrvar.h> 45 #include <dev/mmc/mmcreg.h> 46 47 #include <dev/fdt/fdt_common.h> 48 #include <dev/mmc/mmc_fdt_helpers.h> 49 50 #include <dev/sdhci/sdhci.h> 51 #include <dev/sdhci/sdhci_fdt_gpio.h> 52 #include <dev/sdhci/sdhci_xenon.h> 53 54 #include "mmcbr_if.h" 55 #include "sdhci_if.h" 56 57 #include "opt_mmccam.h" 58 #include "opt_soc.h" 59 60 static struct ofw_compat_data compat_data[] = { 61 { "marvell,armada-3700-sdhci", 1 }, 62 #ifdef SOC_MARVELL_8K 63 { "marvell,armada-cp110-sdhci", 1 }, 64 { "marvell,armada-ap806-sdhci", 1 }, 65 { "marvell,armada-ap807-sdhci", 1 }, 66 #endif 67 { NULL, 0 } 68 }; 69 70 static bool 71 sdhci_xenon_fdt_get_card_present(device_t dev, struct sdhci_slot *slot) 72 { 73 struct sdhci_xenon_softc *sc; 74 75 sc = device_get_softc(dev); 76 77 return (sdhci_fdt_gpio_get_present(sc->gpio)); 78 } 79 80 static int 81 sdhci_xenon_fdt_probe(device_t dev) 82 { 83 if (!ofw_bus_status_okay(dev)) 84 return (ENXIO); 85 86 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 87 return (ENXIO); 88 89 device_set_desc(dev, "Armada Xenon SDHCI controller"); 90 91 return (BUS_PROBE_SPECIFIC); 92 } 93 94 static void 95 sdhci_xenon_fdt_parse(device_t dev, struct sdhci_slot *slot) 96 { 97 struct sdhci_xenon_softc *sc; 98 struct mmc_helper mmc_helper; 99 100 sc = device_get_softc(dev); 101 memset(&mmc_helper, 0, sizeof(mmc_helper)); 102 103 /* MMC helper for parsing FDT */ 104 mmc_fdt_parse(dev, 0, &mmc_helper, &slot->host); 105 106 sc->skip_regulators = false; 107 sc->vmmc_supply = mmc_helper.vmmc_supply; 108 sc->vqmmc_supply = mmc_helper.vqmmc_supply; 109 sc->wp_inverted = mmc_helper.props & MMC_PROP_WP_INVERTED; 110 111 /* Check if the device is flagged as non-removable. */ 112 if (mmc_helper.props & MMC_PROP_NON_REMOVABLE) { 113 slot->opt |= SDHCI_NON_REMOVABLE; 114 if (bootverbose) 115 device_printf(dev, "Non-removable media\n"); 116 } 117 } 118 119 static int 120 sdhci_xenon_fdt_attach(device_t dev) 121 { 122 struct sdhci_xenon_softc *sc; 123 struct sdhci_slot *slot; 124 125 sc = device_get_softc(dev); 126 slot = malloc(sizeof(*slot), M_DEVBUF, M_ZERO | M_WAITOK); 127 128 sdhci_xenon_fdt_parse(dev, slot); 129 130 /* 131 * Set up any gpio pin handling described in the FDT data. This cannot 132 * fail; see comments in sdhci_fdt_gpio.h for details. 133 */ 134 sc->gpio = sdhci_fdt_gpio_setup(dev, slot); 135 sc->slot = slot; 136 137 return (sdhci_xenon_attach(dev)); 138 } 139 140 static int 141 sdhci_xenon_fdt_detach(device_t dev) 142 { 143 struct sdhci_xenon_softc *sc; 144 145 sc = device_get_softc(dev); 146 if (sc->gpio != NULL) 147 sdhci_fdt_gpio_teardown(sc->gpio); 148 149 return (sdhci_xenon_detach(dev)); 150 } 151 152 static device_method_t sdhci_xenon_fdt_methods[] = { 153 /* device_if */ 154 DEVMETHOD(device_probe, sdhci_xenon_fdt_probe), 155 DEVMETHOD(device_attach, sdhci_xenon_fdt_attach), 156 DEVMETHOD(device_detach, sdhci_xenon_fdt_detach), 157 158 DEVMETHOD(sdhci_get_card_present, sdhci_xenon_fdt_get_card_present), 159 160 DEVMETHOD_END 161 }; 162 163 DEFINE_CLASS_1(sdhci_xenon, sdhci_xenon_fdt_driver, sdhci_xenon_fdt_methods, 164 sizeof(struct sdhci_xenon_softc), sdhci_xenon_driver); 165 166 static devclass_t sdhci_xenon_fdt_devclass; 167 168 DRIVER_MODULE(sdhci_xenon, simplebus, sdhci_xenon_fdt_driver, 169 sdhci_xenon_fdt_devclass, NULL, NULL); 170 171 #ifndef MMCCAM 172 MMC_DECLARE_BRIDGE(sdhci_xenon_fdt); 173 #endif 174