mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-17 09:43:59 +08:00
9cade1a46c
To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* 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 */
|