| Server IP : 20.75.53.88 / Your IP : 216.73.217.72 [ Web Server : Apache System : Linux VMRALP-3 4.4.0-256-generic #290~14.04.1-Ubuntu SMP Thu Jun 20 09:24:50 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 5.5.9-1ubuntu4.29+esm15 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Domains : 3 Domains MySQL : ON | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-4.4.0-256/include/linux/dma/ |
Upload File : |
/*
* 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 */