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dma: move dma_ops to dma-uclass.h

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Move dma_ops to a separate header file, following other uclass
implementations. While doing so, this patch also improves dma_ops
documentation.

Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
This commit is contained in:
Álvaro Fernández Rojas 2018-11-28 19:17:49 +01:00 committed by Tom Rini
parent 205b010caf
commit 10b4dc5208
4 changed files with 41 additions and 24 deletions
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2
drivers/dma/dma-uclass.c
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@ -9,10 +9,10 @@
*/
#include <common.h>
#include <dma.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
#include <dma-uclass.h>
#include <errno.h>
int dma_get_device(u32 transfer_type, struct udevice **devp)

2
drivers/dma/ti-edma3.c
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@ -11,7 +11,7 @@
#include <asm/io.h>
#include <common.h>
#include <dm.h>
#include <dma.h>
#include <dma-uclass.h>
#include <asm/omap_common.h>
#include <asm/ti-common/ti-edma3.h>

39
include/dma-uclass.h Normal file
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@ -0,0 +1,39 @@
/* 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 */

22
include/dma.h
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@ -26,28 +26,6 @@ enum dma_direction {
#define DMA_SUPPORTS_DEV_TO_MEM BIT(2)
#define DMA_SUPPORTS_DEV_TO_DEV BIT(3)
/*
* struct dma_ops - Driver model DMA operations
*
* The uclass interface is implemented by all DMA devices which use
* driver model.
*/
struct dma_ops {
/*
* Get the current timer count
*
* @dev: The DMA device
* @direction: direction of data transfer should be one from
enum dma_direction
* @dst: Destination pointer
* @src: Source pointer
* @len: Length of the data to be copied.
* @return: 0 if OK, -ve on error
*/
int (*transfer)(struct udevice *dev, int direction, void *dst,
void *src, size_t len);
};
/*
* struct dma_dev_priv - information about a device used by the uclass
*