| Richard Röjfors | de5d445 | 2010-03-25 19:44:21 +0100 | [diff] [blame] | 1 | /* |
| 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 | */ |
| 37 | struct 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 | */ |
| 50 | struct timb_dma_platform_data { |
| 51 | unsigned nr_channels; |
| 52 | struct timb_dma_platform_data_channel channels[32]; |
| 53 | }; |
| 54 | |
| 55 | #endif |