dma-ops.h

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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 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_ */