e63fbd7bb7
the dts to find the supported speeds and the regulators. Not all DTS have every settings properly defined so host controller will still have to add some caps themselves. It also add a mmc_fdt_gpio_setup function which will read the cd-gpios property and register it as the CD pin. If the pin support interrupts one will be registered and the cd_helper function will be called. If the pin doesn't support interrupts the internal taskqueue will poll for change and call the same cd_helper function. mmc_fdt_gpio_setup will also parse the wp-gpio property and MMC drivers can know the write-protect pin value by calling the mmc_fdt_gpio_get_readonly function. MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D23267
77 lines
2.7 KiB
C
77 lines
2.7 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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* $FreeBSD$
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*/
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#ifndef _MMC_FDT_HELPERS_H_
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#define _MMC_FDT_HELPERS_H_
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#include <dev/gpio/gpiobusvar.h>
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#include <dev/ofw/ofw_bus.h>
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#ifdef EXT_RESOURCES
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#include <dev/extres/regulator/regulator.h>
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#endif
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struct mmc_fdt_helper {
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device_t dev;
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gpio_pin_t wp_pin;
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gpio_pin_t cd_pin;
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void * cd_ihandler;
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struct resource * cd_ires;
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int cd_irid;
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void (*cd_handler)(device_t, bool);
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struct timeout_task cd_delayed_task;
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bool cd_disabled;
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bool wp_disabled;
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bool cd_present;
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uint32_t props;
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#define MMC_PROP_BROKEN_CD (1 << 0)
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#define MMC_PROP_NON_REMOVABLE (1 << 1)
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#define MMC_PROP_WP_INVERTED (1 << 2)
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#define MMC_PROP_CD_INVERTED (1 << 3)
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#define MMC_PROP_DISABLE_WP (1 << 4)
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#define MMC_PROP_NO_SDIO (1 << 5)
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#define MMC_PROP_NO_SD (1 << 6)
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#define MMC_PROP_NO_MMC (1 << 7)
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#ifdef EXT_RESOURCES
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regulator_t vmmc_supply;
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regulator_t vqmmc_supply;
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#endif
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};
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typedef void (*mmc_fdt_cd_handler)(device_t dev, bool present);
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int mmc_fdt_parse(device_t dev, phandle_t node, struct mmc_fdt_helper *helper, struct mmc_host *host);
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int mmc_fdt_gpio_setup(device_t dev, phandle_t node, struct mmc_fdt_helper *helper, mmc_fdt_cd_handler handler);
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void mmc_fdt_gpio_teardown(struct mmc_fdt_helper *helper);
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bool mmc_fdt_gpio_get_present(struct mmc_fdt_helper *helper);
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bool mmc_fdt_gpio_get_readonly(struct mmc_fdt_helper *helper);
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#endif
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