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sys/dev/mmc/mmc_helpers.c
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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> | |||||
__FBSDID("$FreeBSD$"); | |||||
#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) | |||||
{ | |||||
uint64_t bus_width, max_freq; | |||||
bus_width = 0; | |||||
if (device_get_property(dev, "bus-width", &bus_width, sizeof(uint64_t)) <= 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 | |||||
*/ | |||||
max_freq = 0; | |||||
device_get_property(dev, "max-frequency", &max_freq, sizeof(uint64_t)); | |||||
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); | |||||
} |