| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Driver for the Synopsys DesignWare DMA Controller |
| * |
| * Copyright (C) 2007 Atmel Corporation |
| * Copyright (C) 2010-2011 ST Microelectronics |
| * Copyright (C) 2014 Intel Corporation |
| */ |
| #ifndef _DMA_DW_H |
| #define _DMA_DW_H |
| |
| #include <linux/clk.h> |
| #include <linux/device.h> |
| #include <linux/dmaengine.h> |
| |
| #include <linux/platform_data/dma-dw.h> |
| |
| struct dw_dma; |
| |
| /** |
| * struct dw_dma_chip - representation of DesignWare DMA controller hardware |
| * @dev: struct device of the DMA controller |
| * @id: instance ID |
| * @irq: irq line |
| * @regs: memory mapped I/O space |
| * @clk: hclk clock |
| * @dw: struct dw_dma that is filed by dw_dma_probe() |
| * @pdata: pointer to platform data |
| */ |
| struct dw_dma_chip { |
| struct device *dev; |
| int id; |
| int irq; |
| void __iomem *regs; |
| struct clk *clk; |
| struct dw_dma *dw; |
| |
| const struct dw_dma_platform_data *pdata; |
| }; |
| |
| /* Export to the platform drivers */ |
| #if IS_ENABLED(CONFIG_DW_DMAC_CORE) |
| int dw_dma_probe(struct dw_dma_chip *chip); |
| int dw_dma_remove(struct dw_dma_chip *chip); |
| int idma32_dma_probe(struct dw_dma_chip *chip); |
| int idma32_dma_remove(struct dw_dma_chip *chip); |
| #else |
| static inline int dw_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; } |
| static inline int dw_dma_remove(struct dw_dma_chip *chip) { return 0; } |
| static inline int idma32_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; } |
| static inline int idma32_dma_remove(struct dw_dma_chip *chip) { return 0; } |
| #endif /* CONFIG_DW_DMAC_CORE */ |
| |
| #endif /* _DMA_DW_H */ |
