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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2018-2019 Synopsys, Inc. and/or its affiliates.
4 * Synopsys DesignWare eDMA core driver
5 *
6 * Author: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
7 */
8
9#ifndef _DW_EDMA_H
10#define _DW_EDMA_H
11
12#include <linux/device.h>
13#include <linux/dmaengine.h>
14
15struct dw_edma;
16
17/**
18 * struct dw_edma_chip - representation of DesignWare eDMA controller hardware
19 * @dev: struct device of the eDMA controller
20 * @id: instance ID
21 * @irq: irq line
22 * @dw: struct dw_edma that is filed by dw_edma_probe()
23 */
24struct dw_edma_chip {
25 struct device *dev;
26 int id;
27 int irq;
28 struct dw_edma *dw;
29};
30
31/* Export to the platform drivers */
32#if IS_ENABLED(CONFIG_DW_EDMA)
33int dw_edma_probe(struct dw_edma_chip *chip);
34int dw_edma_remove(struct dw_edma_chip *chip);
35#else
36static inline int dw_edma_probe(struct dw_edma_chip *chip)
37{
38 return -ENODEV;
39}
40
41static inline int dw_edma_remove(struct dw_edma_chip *chip)
42{
43 return 0;
44}
45#endif /* CONFIG_DW_EDMA */
46
47#endif /* _DW_EDMA_H */