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kernel add
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#ifndef __MMC_ATMEL_MCI_H
#define __MMC_ATMEL_MCI_H
#include <linux/platform_data/dma-atmel.h>
#include <linux/platform_data/dma-dw.h>
/**
* struct mci_dma_data - DMA data for MCI interface
*/
struct mci_dma_data {
#ifdef CONFIG_ARM
struct at_dma_slave sdata;
#else
struct dw_dma_slave sdata;
#endif
};
/* accessor macros */
#define slave_data_ptr(s) (&(s)->sdata)
#define find_slave_dev(s) ((s)->sdata.dma_dev)
#endif /* __MMC_ATMEL_MCI_H */
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