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82c29810 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
de5d4453 RR |
2 | /* |
3 | * timb_dma.h timberdale FPGA DMA driver defines | |
4 | * Copyright (c) 2010 Intel Corporation | |
de5d4453 RR |
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 |