https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: bfa76d49576599a4b9f9b7a71f23d73d6dcff735 authored by Linus Torvalds on 09 February 2015, 02:54:22 UTC
Linux 3.19
Linux 3.19
Tip revision: bfa76d4
dw.h
/*
* Driver for the Synopsys DesignWare DMA Controller
*
* Copyright (C) 2007 Atmel Corporation
* Copyright (C) 2010-2011 ST Microelectronics
* Copyright (C) 2014 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 _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
* @irq: irq line
* @regs: memory mapped I/O space
* @clk: hclk clock
* @dw: struct dw_dma that is filed by dw_dma_probe()
*/
struct dw_dma_chip {
struct device *dev;
int irq;
void __iomem *regs;
struct clk *clk;
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);
/* DMA API extensions */
struct dw_desc;
struct dw_cyclic_desc {
struct dw_desc **desc;
unsigned long periods;
void (*period_callback)(void *param);
void *period_callback_param;
};
struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
dma_addr_t buf_addr, size_t buf_len, size_t period_len,
enum dma_transfer_direction direction);
void dw_dma_cyclic_free(struct dma_chan *chan);
int dw_dma_cyclic_start(struct dma_chan *chan);
void dw_dma_cyclic_stop(struct dma_chan *chan);
dma_addr_t dw_dma_get_src_addr(struct dma_chan *chan);
dma_addr_t dw_dma_get_dst_addr(struct dma_chan *chan);
#endif /* _DMA_DW_H */