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133 lines
4.9 KiB
C
133 lines
4.9 KiB
C
/*
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* Copyright 2019 Emmanuel Vadot <manu@freebsd.org>
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* Copyright (c) 2017 Ian Lepore <ian@freebsd.org> All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/gpio.h>
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#include <sys/taskqueue.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmc_helpers.h>
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static inline void
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mmc_parse_sd_speed(device_t dev, struct mmc_host *host)
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{
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bool no_18v = false;
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/*
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* Parse SD supported modes
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* All UHS-I modes requires 1.8V signaling.
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*/
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if (device_has_property(dev, "no-1-8-v"))
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no_18v = true;
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if (device_has_property(dev, "cap-sd-highspeed"))
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host->caps |= MMC_CAP_HSPEED;
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if (device_has_property(dev, "sd-uhs-sdr12") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr25") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR25 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr50") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR50 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr104") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-ddr50") && !no_18v)
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host->caps |= MMC_CAP_UHS_DDR50 | MMC_CAP_SIGNALING_180;
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}
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static inline void
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mmc_parse_mmc_speed(device_t dev, struct mmc_host *host)
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{
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/* Parse eMMC supported modes */
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if (device_has_property(dev, "cap-mmc-highspeed"))
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host->caps |= MMC_CAP_HSPEED;
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if (device_has_property(dev, "mmc-ddr-1_2v"))
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host->caps |= MMC_CAP_MMC_DDR52_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-ddr-1_8v"))
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host->caps |= MMC_CAP_MMC_DDR52_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-ddr-3_3v"))
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host->caps |= MMC_CAP_SIGNALING_330;
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if (device_has_property(dev, "mmc-hs200-1_2v"))
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host->caps |= MMC_CAP_MMC_HS200_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-hs200-1_8v"))
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host->caps |= MMC_CAP_MMC_HS200_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-hs400-1_2v"))
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host->caps |= MMC_CAP_MMC_HS400_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-hs400-1_8v"))
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host->caps |= MMC_CAP_MMC_HS400_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-hs400-enhanced-strobe"))
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host->caps |= MMC_CAP_MMC_ENH_STROBE;
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}
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int
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mmc_parse(device_t dev, struct mmc_helper *helper, struct mmc_host *host)
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{
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uint32_t bus_width, max_freq;
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bus_width = 0;
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if (device_get_property(dev, "bus-width", &bus_width,
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sizeof(bus_width), DEVICE_PROP_UINT32) <= 0)
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bus_width = 1;
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if (bus_width >= 4)
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host->caps |= MMC_CAP_4_BIT_DATA;
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if (bus_width >= 8)
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host->caps |= MMC_CAP_8_BIT_DATA;
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/*
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* max-frequency is optional, drivers should tweak this value
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* if it's not present based on the clock that the mmc controller
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* operates on
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*/
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if (device_get_property(dev, "max-frequency", &max_freq,
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sizeof(max_freq), DEVICE_PROP_UINT32) > 0)
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host->f_max = max_freq;
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if (device_has_property(dev, "broken-cd"))
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helper->props |= MMC_PROP_BROKEN_CD;
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if (device_has_property(dev, "non-removable"))
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helper->props |= MMC_PROP_NON_REMOVABLE;
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if (device_has_property(dev, "wp-inverted"))
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helper->props |= MMC_PROP_WP_INVERTED;
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if (device_has_property(dev, "cd-inverted"))
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helper->props |= MMC_PROP_CD_INVERTED;
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if (device_has_property(dev, "no-sdio"))
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helper->props |= MMC_PROP_NO_SDIO;
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if (device_has_property(dev, "no-sd"))
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helper->props |= MMC_PROP_NO_SD;
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if (device_has_property(dev, "no-mmc"))
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helper->props |= MMC_PROP_NO_MMC;
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if (!(helper->props & MMC_PROP_NO_SD))
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mmc_parse_sd_speed(dev, host);
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if (!(helper->props & MMC_PROP_NO_MMC))
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mmc_parse_mmc_speed(dev, host);
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return (0);
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}
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