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/* arch/arm/plat-samsung/include/plat/dma-ops.h
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung DMA support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __SAMSUNG_DMA_OPS_H_
#define __SAMSUNG_DMA_OPS_H_ __FILE__
#include <linux/dmaengine.h>
#include <mach/dma.h>
struct samsung_dma_req {
enum dma_transaction_type cap;
struct s3c2410_dma_client *client;
};
struct samsung_dma_prep {
enum dma_transaction_type cap;
enum dma_transfer_direction direction;
dma_addr_t buf;
unsigned long period;
unsigned long len;
void (*fp)(void *data);
void *fp_param;
};
struct samsung_dma_config {
enum dma_transfer_direction direction;
enum dma_slave_buswidth width;
dma_addr_t fifo;
};
struct samsung_dma_ops {
unsigned (*request)(enum dma_ch ch, struct samsung_dma_req *param,
struct device *dev, char *ch_name);
int (*release)(unsigned ch, void *param);
int (*config)(unsigned ch, struct samsung_dma_config *param);
int (*prepare)(unsigned ch, struct samsung_dma_prep *param);
int (*trigger)(unsigned ch);
int (*started)(unsigned ch);
int (*flush)(unsigned ch);
int (*stop)(unsigned ch);
};
extern void *samsung_dmadev_get_ops(void);
extern void *s3c_dma_get_ops(void);
static inline void *__samsung_dma_get_ops(void)
{
if (samsung_dma_is_dmadev())
return samsung_dmadev_get_ops();
else
return s3c_dma_get_ops();
}
/*
* samsung_dma_get_ops
* get the set of samsung dma operations
*/
#define samsung_dma_get_ops() __samsung_dma_get_ops()
#endif /* __SAMSUNG_DMA_OPS_H_ */