03d4e8bb65
This helper can be used to enable/disable the regulator and starting the power sequence of sd/sdio/eMMC cards. Sponsored by: Diablotin Systems Differential Revision: https://reviews.freebsd.org/D30291
80 lines
2.8 KiB
C
80 lines
2.8 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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device_t mmc_pwrseq;
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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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void mmc_fdt_set_power(struct mmc_fdt_helper *helper, enum mmc_power_mode power_mode);
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#endif
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