/* 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([31mCONFIG_DW_DMAC_CORE[0m) 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 */ |