56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
|
/*
|
||
|
|
* 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
|