nuttx/boards/arm/lpc17xx_40xx/zkit-arm-1769/src/lpc17_40_usbmsc.c

/****************************************************************************
 * boards/zkit-arm-1769/src/lpc17_40_usbmsc.c
 *
 *   Copyright (C) 2013 Zilogic Systems. All rights reserved.
 *   Author: BabuSubashChandar <code@zilogic.com>
 *
 * Based on boards/lpcxpresso-lpc1768/src/lpc17_40_usbmsc.c
 *
 *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Configure and register the LPC17xx/LPC40xx MMC/SD SPI block driver.
 *
 * 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 <syslog.h>
#include <errno.h>

#include <nuttx/board.h>
#include <nuttx/mmcsd.h>
#include <nuttx/spi/spi.h>

#include "lpc17_40_spi.h"
#include "zkit-arm-1769.h"

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* Configuration ************************************************************/

#ifndef CONFIG_SYSTEM_USBMSC_DEVMINOR1
#  define CONFIG_SYSTEM_USBMSC_DEVMINOR1 0
#endif

/* PORT and SLOT number probably depend on the board configuration */

#ifdef CONFIG_ARCH_BOARD_ZKITARM
#  undef LPC17XX_40XX_MMCSDSPIPORTNO
#  define LPC17XX_40XX_MMCSDSPIPORTNO 0
#  undef LPC17XX_40XX_MMCSDSLOTNO
#  define LPC17XX_40XX_MMCSDSLOTNO 0
#else
   /* Add configuration for new LPC17xx/LPC40xx boards here */
#  error "Unrecognized LPC17xx/LPC40xx board"
#endif

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: board_usbmsc_initialize
 *
 * Description:
 *   Perform architecture specific initialization as needed to establish
 *   the mass storage device that will be exported by the USB MSC device.
 *
 ****************************************************************************/

int board_usbmsc_initialize(int port)
{
  FAR struct spi_dev_s *spi;
  int ret;

  /* Get the SPI port */

  syslog(LOG_INFO, "Initializing SPI port %d\n",
         LPC17XX_40XX_MMCSDSPIPORTNO);

  zkit_spidev_initialize();
  spi = lpc17_40_spibus_initialize(LPC17XX_40XX_MMCSDSPIPORTNO);
  if (!spi)
    {
      syslog(LOG_ERR, "ERROR: Failed to initialize SPI port %d\n",
             LPC17XX_40XX_MMCSDSPIPORTNO);
      return -ENODEV;
    }

  syslog(LOG_INFO, "Successfully initialized SPI port %d\n",
         LPC17XX_40XX_MMCSDSPIPORTNO);

  /* Bind the SPI port to the slot */

  syslog(LOG_INFO, "Binding SPI port %d to MMC/SD slot %d\n",
         LPC17XX_40XX_MMCSDSPIPORTNO, LPC17XX_40XX_MMCSDSLOTNO);

  ret = mmcsd_spislotinitialize(CONFIG_SYSTEM_USBMSC_DEVMINOR1,
                                LPC17XX_40XX_MMCSDSLOTNO, spi);
  if (ret < 0)
    {
      syslog(LOG_ERR,
             "ERROR: Failed to bind SPI port %d to MMC/SD slot %d: %d\n",
             LPC17XX_40XX_MMCSDSPIPORTNO, LPC17XX_40XX_MMCSDSLOTNO, ret);
      return ret;
    }

  syslog(LOG_INFO, "Successfully bound SPI port %d to MMC/SD slot %d\n",
         LPC17XX_40XX_MMCSDSPIPORTNO, LPC17XX_40XX_MMCSDSLOTNO);
  return OK;
}