110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/****************************************************************************
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* boards/arm/at32/at32f437-mini/src/at32_mmcsd.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/sdio.h>
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#include <nuttx/mmcsd.h>
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#include "at32_sdio.h"
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#include "at32f437-mini.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#define HAVE_MMCSD 1 /* Assume that we have SD support */
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#define AT32_MMCSDSLOTNO 0 /* There is only one slot */
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/* Can't support MMC/SD features if the SDIO peripheral is disabled */
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#ifndef CONFIG_AT32_SDIO
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# undef HAVE_MMCSD
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#endif
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/* Can't support MMC/SD features if mountpoints are disabled */
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#ifdef CONFIG_DISABLE_MOUNTPOINT
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# undef HAVE_MMCSD
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: at32_sdinitialize
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*
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* Description:
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* Initialize the SPI-based SD card. Requires CONFIG_DISABLE_MOUNTPOINT=n
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* and CONFIG_AT32_SDIO=y
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*
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****************************************************************************/
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int at32_sdinitialize(int minor)
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{
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#ifdef HAVE_MMCSD
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struct sdio_dev_s *sdio;
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int ret;
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/* First, get an instance of the SDIO interface */
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sdio = sdio_initialize(AT32_MMCSDSLOTNO);
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if (!sdio)
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{
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ferr("ERROR: Failed to initialize SDIO slot %d\n", AT32_MMCSDSLOTNO);
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return -ENODEV;
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}
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finfo("Initialized SDIO slot %d\n", AT32_MMCSDSLOTNO);
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/* Now bind the SDIO interface to the MMC/SD driver */
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ret = mmcsd_slotinitialize(minor, sdio);
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if (ret != OK)
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{
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ferr("ERROR:");
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ferr(" Failed to bind SDIO slot %d to the MMC/SD driver, minor=%d\n",
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AT32_MMCSDSLOTNO, minor);
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}
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finfo("Bound SDIO slot %d to the MMC/SD driver, minor=%d\n",
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AT32_MMCSDSLOTNO, minor);
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/* Then let's guess and say that there is a card in the slot.
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* I need to check to see if the M3 Wildfire board supports a GPIO to
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* detect if there is a card in the slot.
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*/
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sdio_mediachange(sdio, true);
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#endif
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return OK;
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}
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