1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * Driver for the Synopsys DesignWare DMA Cont 2 * Driver for the Synopsys DesignWare DMA Controller
4 * 3 *
5 * Copyright (C) 2007 Atmel Corporation 4 * Copyright (C) 2007 Atmel Corporation
6 * Copyright (C) 2010-2011 ST Microelectronics 5 * Copyright (C) 2010-2011 ST Microelectronics
7 * Copyright (C) 2014 Intel Corporation 6 * Copyright (C) 2014 Intel Corporation
>> 7 *
>> 8 * This program is free software; you can redistribute it and/or modify
>> 9 * it under the terms of the GNU General Public License version 2 as
>> 10 * published by the Free Software Foundation.
8 */ 11 */
9 #ifndef _DMA_DW_H 12 #ifndef _DMA_DW_H
10 #define _DMA_DW_H 13 #define _DMA_DW_H
11 14
12 #include <linux/clk.h> 15 #include <linux/clk.h>
13 #include <linux/device.h> 16 #include <linux/device.h>
14 #include <linux/dmaengine.h> 17 #include <linux/dmaengine.h>
15 18
16 #include <linux/platform_data/dma-dw.h> 19 #include <linux/platform_data/dma-dw.h>
17 20
18 struct dw_dma; 21 struct dw_dma;
19 22
20 /** 23 /**
21 * struct dw_dma_chip - representation of Desi 24 * struct dw_dma_chip - representation of DesignWare DMA controller hardware
22 * @dev: struct device of the D 25 * @dev: struct device of the DMA controller
23 * @id: instance ID 26 * @id: instance ID
24 * @irq: irq line 27 * @irq: irq line
25 * @regs: memory mapped I/O spac 28 * @regs: memory mapped I/O space
26 * @clk: hclk clock 29 * @clk: hclk clock
27 * @dw: struct dw_dma that is 30 * @dw: struct dw_dma that is filed by dw_dma_probe()
28 * @pdata: pointer to platform da 31 * @pdata: pointer to platform data
29 */ 32 */
30 struct dw_dma_chip { 33 struct dw_dma_chip {
31 struct device *dev; 34 struct device *dev;
32 int id; 35 int id;
33 int irq; 36 int irq;
34 void __iomem *regs; 37 void __iomem *regs;
35 struct clk *clk; 38 struct clk *clk;
36 struct dw_dma *dw; 39 struct dw_dma *dw;
37 40
38 const struct dw_dma_platform_data 41 const struct dw_dma_platform_data *pdata;
39 }; 42 };
40 43
41 /* Export to the platform drivers */ 44 /* Export to the platform drivers */
42 #if IS_ENABLED(CONFIG_DW_DMAC_CORE) 45 #if IS_ENABLED(CONFIG_DW_DMAC_CORE)
43 int dw_dma_probe(struct dw_dma_chip *chip); 46 int dw_dma_probe(struct dw_dma_chip *chip);
44 int dw_dma_remove(struct dw_dma_chip *chip); 47 int dw_dma_remove(struct dw_dma_chip *chip);
45 int idma32_dma_probe(struct dw_dma_chip *chip) <<
46 int idma32_dma_remove(struct dw_dma_chip *chip <<
47 #else 48 #else
48 static inline int dw_dma_probe(struct dw_dma_c 49 static inline int dw_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; }
49 static inline int dw_dma_remove(struct dw_dma_ 50 static inline int dw_dma_remove(struct dw_dma_chip *chip) { return 0; }
50 static inline int idma32_dma_probe(struct dw_d <<
51 static inline int idma32_dma_remove(struct dw_ <<
52 #endif /* CONFIG_DW_DMAC_CORE */ 51 #endif /* CONFIG_DW_DMAC_CORE */
53 52
54 #endif /* _DMA_DW_H */ 53 #endif /* _DMA_DW_H */
55 54
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