rt-thread/bsp/mini4020/drivers/sdcard.h

/*
 * File      : sdcard.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2009 - 2012, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 */

#ifndef __SDCARD_H
#define __SDCARD_H

#include <rtthread.h>

#ifdef RT_USING_DFS
 
#include  <sep4020.h>

#define INICLK	300000
#define SDCLK	24000000	//PCLK=49.392MHz
#define MMCCLK	15000000	//PCLK=49.392MHz

/*struct of the SDC*/
struct 	sd_c
{
	__IO rt_uint32_t	clk_ctl;
	__IO rt_uint32_t	soft_rst;
	__IO rt_uint32_t	arg;
	__IO rt_uint32_t	cmd;
	__IO rt_uint32_t	blk_sz;
	__IO rt_uint32_t	blk_cnt;
	__IO rt_uint32_t	trans_mode;
	__O  rt_uint32_t	response0;
	__O  rt_uint32_t	response1;
	__O  rt_uint32_t	response2;
	__O  rt_uint32_t	response3;
	__IO rt_uint32_t	rd_to_ctl;
	__IO rt_uint32_t	int_stat;
	__IO rt_uint32_t	int_stat_mask;
	__O  rt_uint32_t	rx_fifo;
	__I  rt_uint32_t	tx_fifo;                
};

/*sdcard driver structure*/
struct	sd_device
{
	struct rt_device		*device; 	/*rt_device*/
	struct sd_c			*sdc;	 	/*SDCARD register*/
	struct dfs_partition	*part;		/*dfs partitions*/
	rt_uint8_t		*sec_buf;	/*sdcard buffer*/
	rt_uint32_t		part_num;	/*partiont numbers*/
	rt_uint32_t		buf_size;	/*buffer size*/
};

#endif
#endif