mirror of https://gitee.com/openkylin/linux.git
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/* 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 property *dt_dmach_prop;
|
|
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);
|
|
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_ */
|