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56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
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/*
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* timb_dma.h timberdale FPGA DMA driver defines
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* Copyright (c) 2010 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* Supports:
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* Timberdale FPGA DMA engine
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*/
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#ifndef _LINUX_TIMB_DMA_H
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#define _LINUX_TIMB_DMA_H
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/**
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* struct timb_dma_platform_data_channel - Description of each individual
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* DMA channel for the timberdale DMA driver
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* @rx: true if this channel handles data in the direction to
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* the CPU.
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* @bytes_per_line: Number of bytes per line, this is specific for channels
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* handling video data. For other channels this shall be left to 0.
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* @descriptors: Number of descriptors to allocate for this channel.
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* @descriptor_elements: Number of elements in each descriptor.
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*
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*/
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struct timb_dma_platform_data_channel {
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bool rx;
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unsigned int bytes_per_line;
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unsigned int descriptors;
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unsigned int descriptor_elements;
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};
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/**
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* struct timb_dma_platform_data - Platform data of the timberdale DMA driver
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* @nr_channels: Number of defined channels in the channels array.
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* @channels: Definition of the each channel.
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*
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*/
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struct timb_dma_platform_data {
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unsigned nr_channels;
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struct timb_dma_platform_data_channel channels[32];
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};
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#endif
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