forked from Archive/PX4-Autopilot
178 lines
5.3 KiB
C
178 lines
5.3 KiB
C
/****************************************************************************
|
|
*
|
|
* Copyright (C) 2014, 2016 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 <board_config.h>
|
|
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <debug.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/sdio.h>
|
|
#include <nuttx/mmcsd.h>
|
|
|
|
#include "chip.h"
|
|
#include "board_config.h"
|
|
#include "stm32_gpio.h"
|
|
#include "stm32_sdmmc.h"
|
|
|
|
#ifdef CONFIG_MMCSD
|
|
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* Card detections requires card support and a card detection GPIO */
|
|
|
|
#define HAVE_NCD 1
|
|
#if !defined(GPIO_SDMMC1_NCD)
|
|
# undef HAVE_NCD
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
static FAR struct sdio_dev_s *sdio_dev;
|
|
#ifdef HAVE_NCD
|
|
static bool g_sd_inserted = 0xff; /* Impossible value */
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_ncd_interrupt
|
|
*
|
|
* Description:
|
|
* Card detect interrupt handler.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_NCD
|
|
static int stm32_ncd_interrupt(int irq, FAR void *context)
|
|
{
|
|
bool present;
|
|
|
|
present = !stm32_gpioread(GPIO_SDMMC1_NCD);
|
|
|
|
if (sdio_dev && present != g_sd_inserted) {
|
|
sdio_mediachange(sdio_dev, present);
|
|
g_sd_inserted = present;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_sdio_initialize
|
|
*
|
|
* Description:
|
|
* Initialize SDIO-based MMC/SD card support
|
|
*
|
|
****************************************************************************/
|
|
|
|
int stm32_sdio_initialize(void)
|
|
{
|
|
int ret;
|
|
|
|
#ifdef HAVE_NCD
|
|
/* Card detect */
|
|
|
|
bool cd_status;
|
|
|
|
/* Configure the card detect GPIO */
|
|
|
|
stm32_configgpio(GPIO_SDMMC1_NCD);
|
|
|
|
/* Register an interrupt handler for the card detect pin */
|
|
|
|
stm32_gpiosetevent(GPIO_SDMMC1_NCD, true, true, true, stm32_ncd_interrupt);
|
|
#endif
|
|
|
|
/* Mount the SDIO-based MMC/SD block driver */
|
|
/* First, get an instance of the SDIO interface */
|
|
|
|
finfo("Initializing SDIO slot %d\n", SDIO_SLOTNO);
|
|
|
|
sdio_dev = sdio_initialize(SDIO_SLOTNO);
|
|
|
|
if (!sdio_dev) {
|
|
syslog(LOG_ERR, "[boot] Failed to initialize SDIO slot %d\n", SDIO_SLOTNO);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Now bind the SDIO interface to the MMC/SD driver */
|
|
|
|
finfo("Bind SDIO to the MMC/SD driver, minor=%d\n", SDIO_MINOR);
|
|
|
|
ret = mmcsd_slotinitialize(SDIO_MINOR, sdio_dev);
|
|
|
|
if (ret != OK) {
|
|
syslog(LOG_ERR, "[boot] Failed to bind SDIO to the MMC/SD driver: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
finfo("Successfully bound SDIO to the MMC/SD driver\n");
|
|
|
|
#ifdef HAVE_NCD
|
|
/* Use SD card detect pin to check if a card is g_sd_inserted */
|
|
|
|
cd_status = !stm32_gpioread(GPIO_SDMMC1_NCD);
|
|
finfo("Card detect : %d\n", cd_status);
|
|
|
|
sdio_mediachange(sdio_dev, cd_status);
|
|
#else
|
|
/* Assume that the SD card is inserted. What choice do we have? */
|
|
|
|
sdio_mediachange(sdio_dev, true);
|
|
#endif
|
|
|
|
return OK;
|
|
}
|
|
|
|
#endif /* CONFIG_MMCSD */
|