1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/kernel.h> 32 #include <sys/types.h> 33 #include <sys/taskqueue.h> 34 #include <sys/module.h> 35 36 #include <machine/bus.h> 37 38 #include <dev/ofw/ofw_bus.h> 39 #include <dev/ofw/ofw_bus_subr.h> 40 41 #include <dev/mmc/bridge.h> 42 #include <dev/mmc/mmcbrvar.h> 43 #include <dev/mmc/mmcreg.h> 44 45 #include <dev/fdt/fdt_common.h> 46 #include <dev/mmc/mmc_fdt_helpers.h> 47 48 #include <dev/sdhci/sdhci.h> 49 #include <dev/sdhci/sdhci_fdt_gpio.h> 50 #include <dev/sdhci/sdhci_xenon.h> 51 52 #include "mmcbr_if.h" 53 #include "sdhci_if.h" 54 55 #include "opt_mmccam.h" 56 #include "opt_soc.h" 57 58 static struct ofw_compat_data compat_data[] = { 59 { "marvell,armada-3700-sdhci", 1 }, 60 #ifdef SOC_MARVELL_8K 61 { "marvell,armada-cp110-sdhci", 1 }, 62 { "marvell,armada-ap806-sdhci", 1 }, 63 { "marvell,armada-ap807-sdhci", 1 }, 64 #endif 65 { NULL, 0 } 66 }; 67 68 static bool 69 sdhci_xenon_fdt_get_card_present(device_t dev, struct sdhci_slot *slot) 70 { 71 struct sdhci_xenon_softc *sc; 72 73 sc = device_get_softc(dev); 74 75 return (sdhci_fdt_gpio_get_present(sc->gpio)); 76 } 77 78 static int 79 sdhci_xenon_fdt_probe(device_t dev) 80 { 81 if (!ofw_bus_status_okay(dev)) 82 return (ENXIO); 83 84 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 85 return (ENXIO); 86 87 device_set_desc(dev, "Armada Xenon SDHCI controller"); 88 89 return (BUS_PROBE_SPECIFIC); 90 } 91 92 static void 93 sdhci_xenon_fdt_parse(device_t dev, struct sdhci_slot *slot) 94 { 95 struct sdhci_xenon_softc *sc; 96 struct mmc_helper mmc_helper; 97 98 sc = device_get_softc(dev); 99 memset(&mmc_helper, 0, sizeof(mmc_helper)); 100 101 /* MMC helper for parsing FDT */ 102 mmc_fdt_parse(dev, 0, &mmc_helper, &slot->host); 103 104 sc->skip_regulators = false; 105 sc->vmmc_supply = mmc_helper.vmmc_supply; 106 sc->vqmmc_supply = mmc_helper.vqmmc_supply; 107 sc->wp_inverted = mmc_helper.props & MMC_PROP_WP_INVERTED; 108 109 /* Check if the device is flagged as non-removable. */ 110 if (mmc_helper.props & MMC_PROP_NON_REMOVABLE) { 111 slot->opt |= SDHCI_NON_REMOVABLE; 112 if (bootverbose) 113 device_printf(dev, "Non-removable media\n"); 114 } 115 } 116 117 static int 118 sdhci_xenon_fdt_attach(device_t dev) 119 { 120 struct sdhci_xenon_softc *sc; 121 struct sdhci_slot *slot; 122 123 sc = device_get_softc(dev); 124 slot = malloc(sizeof(*slot), M_DEVBUF, M_ZERO | M_WAITOK); 125 126 sdhci_xenon_fdt_parse(dev, slot); 127 128 /* 129 * Set up any gpio pin handling described in the FDT data. This cannot 130 * fail; see comments in sdhci_fdt_gpio.h for details. 131 */ 132 sc->gpio = sdhci_fdt_gpio_setup(dev, slot); 133 sc->slot = slot; 134 135 return (sdhci_xenon_attach(dev)); 136 } 137 138 static int 139 sdhci_xenon_fdt_detach(device_t dev) 140 { 141 struct sdhci_xenon_softc *sc; 142 143 sc = device_get_softc(dev); 144 if (sc->gpio != NULL) 145 sdhci_fdt_gpio_teardown(sc->gpio); 146 147 return (sdhci_xenon_detach(dev)); 148 } 149 150 static device_method_t sdhci_xenon_fdt_methods[] = { 151 /* device_if */ 152 DEVMETHOD(device_probe, sdhci_xenon_fdt_probe), 153 DEVMETHOD(device_attach, sdhci_xenon_fdt_attach), 154 DEVMETHOD(device_detach, sdhci_xenon_fdt_detach), 155 156 DEVMETHOD(sdhci_get_card_present, sdhci_xenon_fdt_get_card_present), 157 158 DEVMETHOD_END 159 }; 160 161 DEFINE_CLASS_1(sdhci_xenon, sdhci_xenon_fdt_driver, sdhci_xenon_fdt_methods, 162 sizeof(struct sdhci_xenon_softc), sdhci_xenon_driver); 163 164 DRIVER_MODULE(sdhci_xenon, simplebus, sdhci_xenon_fdt_driver, NULL, NULL); 165 166 #ifndef MMCCAM 167 MMC_DECLARE_BRIDGE(sdhci_xenon_fdt); 168 #endif 169