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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
* Copyright (C) 2015 Texas Instruments Incorporated <www.ti.com>
* Written by Mugunthan V N <mugunthanvnm@ti.com>
*
*/
#ifndef _DMA_UCLASS_H
#define _DMA_UCLASS_H
/* See dma.h for background documentation. */
#include <dma.h>
/*
* struct dma_ops - Driver model DMA operations
*
* The uclass interface is implemented by all DMA devices which use
* driver model.
*/
struct dma_ops {
/**
* transfer() - Issue a DMA transfer. The implementation must
* wait until the transfer is done.
*
* @dev: The DMA device
* @direction: direction of data transfer (should be one from
* enum dma_direction)
* @dst: The destination pointer.
* @src: The source pointer.
* @len: Length of the data to be copied (number of bytes).
* @return zero on success, or -ve error code.
*/
int (*transfer)(struct udevice *dev, int direction, void *dst,
void *src, size_t len);
};
#endif /* _DMA_UCLASS_H */
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