1 /* 2 * Copyright 2019 Emmanuel Vadot <manu@freebsd.org> 3 * Copyright (c) 2017 Ian Lepore <ian@freebsd.org> All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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/gpio.h> 33 #include <sys/taskqueue.h> 34 35 #include <dev/mmc/bridge.h> 36 #include <dev/mmc/mmc_helpers.h> 37 38 static inline void 39 mmc_parse_sd_speed(device_t dev, struct mmc_host *host) 40 { 41 bool no_18v = false; 42 43 /* 44 * Parse SD supported modes 45 * All UHS-I modes requires 1.8V signaling. 46 */ 47 if (device_has_property(dev, "no-1-8-v")) 48 no_18v = true; 49 if (device_has_property(dev, "cap-sd-highspeed")) 50 host->caps |= MMC_CAP_HSPEED; 51 if (device_has_property(dev, "sd-uhs-sdr12") && !no_18v) 52 host->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_SIGNALING_180; 53 if (device_has_property(dev, "sd-uhs-sdr25") && !no_18v) 54 host->caps |= MMC_CAP_UHS_SDR25 | MMC_CAP_SIGNALING_180; 55 if (device_has_property(dev, "sd-uhs-sdr50") && !no_18v) 56 host->caps |= MMC_CAP_UHS_SDR50 | MMC_CAP_SIGNALING_180; 57 if (device_has_property(dev, "sd-uhs-sdr104") && !no_18v) 58 host->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_SIGNALING_180; 59 if (device_has_property(dev, "sd-uhs-ddr50") && !no_18v) 60 host->caps |= MMC_CAP_UHS_DDR50 | MMC_CAP_SIGNALING_180; 61 } 62 63 static inline void 64 mmc_parse_mmc_speed(device_t dev, struct mmc_host *host) 65 { 66 /* Parse eMMC supported modes */ 67 if (device_has_property(dev, "cap-mmc-highspeed")) 68 host->caps |= MMC_CAP_HSPEED; 69 if (device_has_property(dev, "mmc-ddr-1_2v")) 70 host->caps |= MMC_CAP_MMC_DDR52_120 | MMC_CAP_SIGNALING_120; 71 if (device_has_property(dev, "mmc-ddr-1_8v")) 72 host->caps |= MMC_CAP_MMC_DDR52_180 | MMC_CAP_SIGNALING_180; 73 if (device_has_property(dev, "mmc-ddr-3_3v")) 74 host->caps |= MMC_CAP_SIGNALING_330; 75 if (device_has_property(dev, "mmc-hs200-1_2v")) 76 host->caps |= MMC_CAP_MMC_HS200_120 | MMC_CAP_SIGNALING_120; 77 if (device_has_property(dev, "mmc-hs200-1_8v")) 78 host->caps |= MMC_CAP_MMC_HS200_180 | MMC_CAP_SIGNALING_180; 79 if (device_has_property(dev, "mmc-hs400-1_2v")) 80 host->caps |= MMC_CAP_MMC_HS400_120 | MMC_CAP_SIGNALING_120; 81 if (device_has_property(dev, "mmc-hs400-1_8v")) 82 host->caps |= MMC_CAP_MMC_HS400_180 | MMC_CAP_SIGNALING_180; 83 if (device_has_property(dev, "mmc-hs400-enhanced-strobe")) 84 host->caps |= MMC_CAP_MMC_ENH_STROBE; 85 } 86 87 int 88 mmc_parse(device_t dev, struct mmc_helper *helper, struct mmc_host *host) 89 { 90 uint32_t bus_width, max_freq; 91 92 bus_width = 0; 93 if (device_get_property(dev, "bus-width", &bus_width, 94 sizeof(bus_width), DEVICE_PROP_UINT32) <= 0) 95 bus_width = 1; 96 97 if (bus_width >= 4) 98 host->caps |= MMC_CAP_4_BIT_DATA; 99 if (bus_width >= 8) 100 host->caps |= MMC_CAP_8_BIT_DATA; 101 102 /* 103 * max-frequency is optional, drivers should tweak this value 104 * if it's not present based on the clock that the mmc controller 105 * operates on 106 */ 107 if (device_get_property(dev, "max-frequency", &max_freq, 108 sizeof(max_freq), DEVICE_PROP_UINT32) > 0) 109 host->f_max = max_freq; 110 111 if (device_has_property(dev, "broken-cd")) 112 helper->props |= MMC_PROP_BROKEN_CD; 113 if (device_has_property(dev, "non-removable")) 114 helper->props |= MMC_PROP_NON_REMOVABLE; 115 if (device_has_property(dev, "wp-inverted")) 116 helper->props |= MMC_PROP_WP_INVERTED; 117 if (device_has_property(dev, "cd-inverted")) 118 helper->props |= MMC_PROP_CD_INVERTED; 119 if (device_has_property(dev, "no-sdio")) 120 helper->props |= MMC_PROP_NO_SDIO; 121 if (device_has_property(dev, "no-sd")) 122 helper->props |= MMC_PROP_NO_SD; 123 if (device_has_property(dev, "no-mmc")) 124 helper->props |= MMC_PROP_NO_MMC; 125 126 if (!(helper->props & MMC_PROP_NO_SD)) 127 mmc_parse_sd_speed(dev, host); 128 129 if (!(helper->props & MMC_PROP_NO_MMC)) 130 mmc_parse_mmc_speed(dev, host); 131 132 return (0); 133 } 134