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Richard Röjforsde5d4452010-03-25 19:44:21 +01001/*
2 * timb_dma.h timberdale FPGA DMA driver defines
3 * Copyright (c) 2010 Intel Corporation
4 *
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.
8 *
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.
13 *
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.
17 */
18
19/* Supports:
20 * Timberdale FPGA DMA engine
21 */
22
23#ifndef _LINUX_TIMB_DMA_H
24#define _LINUX_TIMB_DMA_H
25
26/**
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
30 * the CPU.
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.
35 *
36 */
37struct timb_dma_platform_data_channel {
38 bool rx;
39 unsigned int bytes_per_line;
40 unsigned int descriptors;
41 unsigned int descriptor_elements;
42};
43
44/**
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.
48 *
49 */
50struct timb_dma_platform_data {
51 unsigned nr_channels;
52 struct timb_dma_platform_data_channel channels[32];
53};
54
55#endif