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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtdevice.h>
#include <rtthread.h>
#include <dfs_fs.h>
#include "drv_sdcard.h"
#include "fsl_card.h"
static sd_card_t g_sd;
static sd_card_t *card = &g_sd;
static struct rt_device sdcard_device;
static struct dfs_partition part;
static rt_err_t vega_sdcard_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t vega_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t vega_sdcard_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_ssize_t vega_sdcard_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
status_t status;
status = SD_ReadBlocks(card, buffer, part.offset + pos, size);
if (status == kStatus_Success) return size;
rt_kprintf("read failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
}
static rt_ssize_t vega_sdcard_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
status_t status;
status = SD_WriteBlocks(card, buffer, part.offset + pos, size);
if (status == kStatus_Success) return size;
rt_kprintf("write failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
}
static rt_err_t vega_sdcard_control(rt_device_t dev, int cmd, void *args)
{
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
if (dev->user_data == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = card->blockSize;
geometry->block_size = card->blockSize;
geometry->sector_count = card->blockCount;
}
return RT_EOK;
}
int rt_hw_sdcard_init(void)
{
/* set SDHC0 clock source */
CLOCK_SetIpSrc(kCLOCK_Sdhc0, kCLOCK_IpSrcLpFllAsync);
/* Save host information. */
card->host.base = USDHC0;
card->host.sourceClock_Hz = CLOCK_GetIpFreq(kCLOCK_Sdhc0);
/* Init card. */
if (SD_Init(card))
{
rt_kprintf("SD card init failed.\r\n");
return -1;
}
else
{
bool status;
rt_uint8_t *sector;
/* get the first sector to read partition table */
sector = (rt_uint8_t *) rt_malloc(card->blockSize);
if (sector == RT_NULL)
{
rt_kprintf("allocate partition sector buffer failed\n");
return -1;
}
status = SD_ReadBlocks(card, sector, 0, 1);
if (status == true)
{
/* get the first partition */
if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
{
/* there is no partition */
part.offset = 0;
part.size = 0;
}
}
else
{
/* there is no partition table */
part.offset = 0;
part.size = 0;
}
/* release sector buffer */
rt_free(sector);
/* register sdcard device */
sdcard_device.type = RT_Device_Class_Block;
sdcard_device.init = vega_sdcard_init;
sdcard_device.open = vega_sdcard_open;
sdcard_device.close = vega_sdcard_close;
sdcard_device.read = vega_sdcard_read;
sdcard_device.write = vega_sdcard_write;
sdcard_device.control = vega_sdcard_control;
/* no private */
sdcard_device.user_data = (void*)card;
rt_device_register(&sdcard_device, "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
}
return 0;
}
INIT_DEVICE_EXPORT(rt_hw_sdcard_init);
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