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/*
* timb_dma.h timberdale FPGA DMA driver defines
* Copyright (c) 2010 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Supports:
* Timberdale FPGA DMA engine
*/
#ifndef _LINUX_TIMB_DMA_H
#define _LINUX_TIMB_DMA_H
/**
* struct timb_dma_platform_data_channel - Description of each individual
* DMA channel for the timberdale DMA driver
* @rx: true if this channel handles data in the direction to
* the CPU.
* @bytes_per_line: Number of bytes per line, this is specific for channels
* handling video data. For other channels this shall be left to 0.
* @descriptors: Number of descriptors to allocate for this channel.
* @descriptor_elements: Number of elements in each descriptor.
*
*/
struct timb_dma_platform_data_channel {
bool rx;
unsigned int bytes_per_line;
unsigned int descriptors;
unsigned int descriptor_elements;
};
/**
* struct timb_dma_platform_data - Platform data of the timberdale DMA driver
* @nr_channels: Number of defined channels in the channels array.
* @channels: Definition of the each channel.
*
*/
struct timb_dma_platform_data {
unsigned nr_channels;
struct timb_dma_platform_data_channel channels[32];
};
#endif