71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
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/*
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* Driver for the Synopsys DesignWare DMA Controller
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*
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* Copyright (C) 2013 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _DW_DMAC_INTERNAL_H
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#define _DW_DMAC_INTERNAL_H
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#include <linux/device.h>
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#include <linux/dw_dmac.h>
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#include "regs.h"
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/**
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* struct dw_dma_chip - representation of DesignWare DMA controller hardware
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* @dev: struct device of the DMA controller
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* @irq: irq line
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* @regs: memory mapped I/O space
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* @dw: struct dw_dma that is filed by dw_dma_probe()
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*/
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struct dw_dma_chip {
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struct device *dev;
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int irq;
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void __iomem *regs;
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struct dw_dma *dw;
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};
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/* Export to the platform drivers */
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int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata);
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int dw_dma_remove(struct dw_dma_chip *chip);
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void dw_dma_shutdown(struct dw_dma_chip *chip);
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#ifdef CONFIG_PM_SLEEP
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int dw_dma_suspend(struct dw_dma_chip *chip);
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int dw_dma_resume(struct dw_dma_chip *chip);
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#endif /* CONFIG_PM_SLEEP */
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/**
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* dwc_get_dms - get destination master
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* @slave: pointer to the custom slave configuration
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*
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* Returns destination master in the custom slave configuration if defined, or
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* default value otherwise.
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*/
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static inline unsigned int dwc_get_dms(struct dw_dma_slave *slave)
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{
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return slave ? slave->dst_master : 0;
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}
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/**
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* dwc_get_sms - get source master
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* @slave: pointer to the custom slave configuration
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*
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* Returns source master in the custom slave configuration if defined, or
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* default value otherwise.
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*/
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static inline unsigned int dwc_get_sms(struct dw_dma_slave *slave)
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{
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return slave ? slave->src_master : 1;
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}
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#endif /* _DW_DMAC_INTERNAL_H */
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