1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * timb_dma.h timberdale FPGA DMA driver defines |
4 | * Copyright (c) 2010 Intel Corporation |
5 | */ |
6 | |
7 | /* Supports: |
8 | * Timberdale FPGA DMA engine |
9 | */ |
10 | |
11 | #ifndef _LINUX_TIMB_DMA_H |
12 | #define _LINUX_TIMB_DMA_H |
13 | |
14 | /** |
15 | * struct timb_dma_platform_data_channel - Description of each individual |
16 | * DMA channel for the timberdale DMA driver |
17 | * @rx: true if this channel handles data in the direction to |
18 | * the CPU. |
19 | * @bytes_per_line: Number of bytes per line, this is specific for channels |
20 | * handling video data. For other channels this shall be left to 0. |
21 | * @descriptors: Number of descriptors to allocate for this channel. |
22 | * @descriptor_elements: Number of elements in each descriptor. |
23 | * |
24 | */ |
25 | struct timb_dma_platform_data_channel { |
26 | bool rx; |
27 | unsigned int bytes_per_line; |
28 | unsigned int descriptors; |
29 | unsigned int descriptor_elements; |
30 | }; |
31 | |
32 | /** |
33 | * struct timb_dma_platform_data - Platform data of the timberdale DMA driver |
34 | * @nr_channels: Number of defined channels in the channels array. |
35 | * @channels: Definition of the each channel. |
36 | * |
37 | */ |
38 | struct timb_dma_platform_data { |
39 | unsigned nr_channels; |
40 | struct timb_dma_platform_data_channel channels[32]; |
41 | }; |
42 | |
43 | #endif |
44 | |