1/*
2 * Driver for the High Speed UART DMA
3 *
4 * Copyright (C) 2015 Intel Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef _DMA_HSU_H
12#define _DMA_HSU_H
13
14#include <linux/device.h>
15#include <linux/interrupt.h>
16
17#include <linux/platform_data/dma-hsu.h>
18
19struct hsu_dma;
20
21/**
22 * struct hsu_dma_chip - representation of HSU DMA hardware
23 * @dev:		 struct device of the DMA controller
24 * @irq:		 irq line
25 * @regs:		 memory mapped I/O space
26 * @length:		 I/O space length
27 * @offset:		 offset of the I/O space where registers are located
28 * @hsu:		 struct hsu_dma that is filed by ->probe()
29 * @pdata:		 platform data for the DMA controller if provided
30 */
31struct hsu_dma_chip {
32	struct device			*dev;
33	int				irq;
34	void __iomem			*regs;
35	unsigned int			length;
36	unsigned int			offset;
37	struct hsu_dma			*hsu;
38	struct hsu_dma_platform_data	*pdata;
39};
40
41/* Export to the internal users */
42irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr);
43
44/* Export to the platform drivers */
45int hsu_dma_probe(struct hsu_dma_chip *chip);
46int hsu_dma_remove(struct hsu_dma_chip *chip);
47
48#endif /* _DMA_HSU_H */
49