nes-proj/drivers/dev/disk/mmc/mmc-arch.h

99 lines
3.4 KiB
C

/*
* Copyright (c) 2016, Benoît Thébaudeau <benoit@wsystem.com>
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/
/**
* \addtogroup mmc
* @{
*
* \defgroup mmc-arch SD/MMC architecture-specific definitions
*
* SD/MMC device driver architecture-specific definitions.
* @{
*
* \file
* Header file for the SD/MMC device driver architecture-specific definitions.
*/
#ifndef MMC_ARCH_H_
#define MMC_ARCH_H_
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
/** \brief Callback of the SD/MMC driver to call when the card-detection signal
* changes.
* \param dev Device
* \param cd Whether a card is detected
* \note Using this function is not mandatory. This only allows to detect a card
* replacement between two successive calls to the SD/MMC driver API.
*/
void mmc_arch_cd_changed_callback(uint8_t dev, bool cd);
/** \brief Gets the state of the card-detection signal.
* \param dev Device
* \return Whether a card is detected
*/
bool mmc_arch_get_cd(uint8_t dev);
/** \brief Gets the state of the write-protection signal.
* \param dev Device
* \return Whether the card is write-protected
*/
bool mmc_arch_get_wp(uint8_t dev);
/** \brief Sets the SPI /CS signal as indicated.
* \param dev Device
* \param sel Whether to assert /CS
*/
void mmc_arch_spi_select(uint8_t dev, bool sel);
/** \brief Sets the SPI clock frequency.
* \param dev Device
* \param freq Frequency (Hz)
*/
void mmc_arch_spi_set_clock_freq(uint8_t dev, uint32_t freq);
/** \brief Performs an SPI transfer.
* \param dev Device
* \param tx_buf Pointer to the transmission buffer, or \c NULL
* \param tx_cnt Number of bytes to transmit, or \c 0
* \param rx_buf Pointer to the reception buffer, or \c NULL
* \param rx_cnt Number of bytes to receive, or \c 0
*/
void mmc_arch_spi_xfer(uint8_t dev, const void *tx_buf, size_t tx_cnt,
void *rx_buf, size_t rx_cnt);
#endif /* MMC_ARCH_H_ */
/**
* @}
* @}
*/