/* 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);#elsestatic 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 */