2 * timb_dma.h timberdale FPGA DMA driver defines
3 * Copyright (c) 2010 Intel Corporation
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * Timberdale FPGA DMA engine
23 #ifndef _LINUX_TIMB_DMA_H
24 #define _LINUX_TIMB_DMA_H
27 * struct timb_dma_platform_data_channel - Description of each individual
28 * DMA channel for the timberdale DMA driver
29 * @rx: true if this channel handles data in the direction to
31 * @bytes_per_line: Number of bytes per line, this is specific for channels
32 * handling video data. For other channels this shall be left to 0.
33 * @descriptors: Number of descriptors to allocate for this channel.
34 * @descriptor_elements: Number of elements in each descriptor.
37 struct timb_dma_platform_data_channel {
39 unsigned int bytes_per_line;
40 unsigned int descriptors;
41 unsigned int descriptor_elements;
45 * struct timb_dma_platform_data - Platform data of the timberdale DMA driver
46 * @nr_channels: Number of defined channels in the channels array.
47 * @channels: Definition of the each channel.
50 struct timb_dma_platform_data {
52 struct timb_dma_platform_data_channel channels[32];