131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/****************************************************************************
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* boards/arm/cxd56xx/common/src/cxd56_spisd.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 <debug.h>
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#include <nuttx/mmcsd.h>
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#include <nuttx/board.h>
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#include <nuttx/fs/fs.h>
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#include "cxd56_spi.h"
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#include "cxd56_gpio.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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#ifndef CONFIG_CXD56_SPISD_SLOT_NO
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# define CONFIG_CXD56_SPISD_SLOT_NO 0
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#endif
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/* Please configure the pin assignment for your board */
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#ifndef MMCSD_DETECT
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# define MMCSD_DETECT PIN_I2S0_DATA_OUT
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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: board_spisd_initialize
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*
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* Description:
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* Initialize the SPI-based SD card.
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*
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****************************************************************************/
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int board_spisd_initialize(int minor, int bus)
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{
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int ret;
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struct spi_dev_s *spi;
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/* Enable input of detect pin */
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cxd56_gpio_config(MMCSD_DETECT, true);
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/* Initialize spi device */
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spi = cxd56_spibus_initialize(bus);
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if (!spi)
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{
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ferr("ERROR: Failed to initialize spi%d.\n", bus);
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return -ENODEV;
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}
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/* Get the SPI driver instance for the SD chip select */
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finfo("Initializing SPI for the MMC/SD slot\n");
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ret = mmcsd_spislotinitialize(minor, CONFIG_CXD56_SPISD_SLOT_NO, spi);
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if (ret < 0)
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{
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ferr("ERROR: Failed to bind SPI device to MMC/SD slot %d: %d\n",
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CONFIG_CXD56_SPISD_SLOT_NO, ret);
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return ret;
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}
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/* Mount filesystem */
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ret = nx_mount("/dev/mmcsd0", "/mnt/sd0", "vfat", 0, NULL);
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if (ret < 0)
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{
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_err("ERROR: Failed to mount the SDCARD. %d\n", ret);
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}
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return OK;
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}
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/****************************************************************************
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* Name: board_spisd_status
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*
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* Description:
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* Get the status whether SD Card is present or not.
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* This function is called only from cxd56_spi.c.
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*
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* Returned Value:
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* Return SPI_STATUS_PRESENT if SD Card is present. Otherwise, return 0.
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*
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****************************************************************************/
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uint8_t board_spisd_status(struct spi_dev_s *dev, uint32_t devid)
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{
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uint8_t ret = 0;
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if (devid == SPIDEV_MMCSD(0))
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{
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/* MMCSD_DETECT is mapping to SD Card detect pin
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* MMCSD_DETECT = 0: Inserted
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* MMCSD_DETECT = 1: Removed
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*/
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ret = cxd56_gpio_read(MMCSD_DETECT) ? 0 : SPI_STATUS_PRESENT;
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}
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return ret;
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}
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