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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455/* 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 */