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