summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-samsung/include/plat/dma-ops.h
blob: 22eafc310bd7858a8fb10b39087fc6064e78e04c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
/* 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>

struct samsung_dma_prep_info {
	enum dma_transaction_type cap;
	enum dma_data_direction direction;
	dma_addr_t buf;
	unsigned long period;
	unsigned long len;
	void (*fp)(void *data);
	void *fp_param;
};

struct samsung_dma_info {
	enum dma_transaction_type cap;
	enum dma_data_direction direction;
	enum dma_slave_buswidth width;
	dma_addr_t fifo;
	struct s3c2410_dma_client *client;
	struct property *dt_dmach_prop;
};

struct samsung_dma_ops {
	unsigned (*request)(enum dma_ch ch, struct samsung_dma_info *info);
	int (*release)(unsigned ch, struct s3c2410_dma_client *client);
	int (*prepare)(unsigned ch, struct samsung_dma_prep_info *info);
	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_ */
OpenPOWER on IntegriCloud