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