131 lines
4.4 KiB
C
131 lines
4.4 KiB
C
/****************************************************************************
|
|
* config/shenzhou/src/up_mmcsd.c
|
|
* arch/arm/src/board/up_mmcsd.c
|
|
*
|
|
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 NuttX 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 OWNER 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <debug.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/spi/spi.h>
|
|
#include <nuttx/mmcsd.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-Processor Definitions
|
|
****************************************************************************/
|
|
/* Configuration ************************************************************/
|
|
/* SPI1 connects to the SD CARD (and to the SPI FLASH) */
|
|
|
|
#define HAVE_MMCSD 1 /* Assume that we have SD support */
|
|
#define STM32_MMCSDSPIPORTNO 1 /* Port is SPI1 */
|
|
#define STM32_MMCSDSLOTNO 0 /* There is only one slot */
|
|
|
|
#ifndef CONFIG_STM32_SPI1
|
|
# undef HAVE_MMCSD
|
|
#else
|
|
# ifdef CONFIG_SPI_OWNBUS
|
|
# warning "SPI1 is shared with SD and FLASH but CONFIG_SPI_OWNBUS is defined"
|
|
# endif
|
|
#endif
|
|
|
|
/* Can't support MMC/SD features if MMC/SD driver support is not selected */
|
|
|
|
#ifndef CONFIG_MMCSD
|
|
# undef HAVE_MMCSD
|
|
#endif
|
|
|
|
/* Can't support MMC/SD features if mountpoints are disabled */
|
|
|
|
#ifdef CONFIG_DISABLE_MOUNTPOINT
|
|
# undef HAVE_MMCSD
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_sdinitialize
|
|
*
|
|
* Description:
|
|
* Initialize the SPI-based SD card. Requires CONFIG_DISABLE_MOUNTPOINT=n
|
|
* and CONFIG_STM32_SPI1=y
|
|
*
|
|
****************************************************************************/
|
|
|
|
int stm32_sdinitialize(int minor)
|
|
{
|
|
#ifdef HAVE_MMCSD
|
|
FAR struct spi_dev_s *spi;
|
|
int ret;
|
|
|
|
/* Get the SPI port */
|
|
|
|
fvdbg("Initializing SPI port %d\n", STM32_MMCSDSPIPORTNO);
|
|
|
|
spi = up_spiinitialize(STM32_MMCSDSPIPORTNO);
|
|
if (!spi)
|
|
{
|
|
fdbg("Failed to initialize SPI port %d\n", STM32_MMCSDSPIPORTNO);
|
|
return -ENODEV;
|
|
}
|
|
|
|
fvdbg("Successfully initialized SPI port %d\n", STM32_MMCSDSPIPORTNO);
|
|
|
|
/* Bind the SPI port to the slot */
|
|
|
|
fvdbg("Binding SPI port %d to MMC/SD slot %d\n",
|
|
STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO);
|
|
|
|
ret = mmcsd_spislotinitialize(minor, STM32_MMCSDSLOTNO, spi);
|
|
if (ret < 0)
|
|
{
|
|
fdbg("Failed to bind SPI port %d to MMC/SD slot %d: %d\n",
|
|
STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO, ret);
|
|
return ret;
|
|
}
|
|
|
|
fvdbg("Successfuly bound SPI port %d to MMC/SD slot %d\n",
|
|
STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO);
|
|
#endif
|
|
return OK;
|
|
}
|
|
|