Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / include / linux / dma / hsu.h
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
19 struct 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  */
31 struct 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 */
42 irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr);
43
44 /* Export to the platform drivers */
45 int hsu_dma_probe(struct hsu_dma_chip *chip);
46 int hsu_dma_remove(struct hsu_dma_chip *chip);
47
48 #endif /* _DMA_HSU_H */