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Diffstat (limited to 'include/linux/timb_dma.h')
| -rw-r--r-- | include/linux/timb_dma.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/timb_dma.h b/include/linux/timb_dma.h new file mode 100644 index 000000000..33ad3b0ab --- /dev/null +++ b/include/linux/timb_dma.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * timb_dma.h timberdale FPGA DMA driver defines + * Copyright (c) 2010 Intel Corporation + */ + +/* Supports: + * Timberdale FPGA DMA engine + */ + +#ifndef _LINUX_TIMB_DMA_H +#define _LINUX_TIMB_DMA_H + +/** + * struct timb_dma_platform_data_channel - Description of each individual + * DMA channel for the timberdale DMA driver + * @rx: true if this channel handles data in the direction to + * the CPU. + * @bytes_per_line: Number of bytes per line, this is specific for channels + * handling video data. For other channels this shall be left to 0. + * @descriptors: Number of descriptors to allocate for this channel. + * @descriptor_elements: Number of elements in each descriptor. + * + */ +struct timb_dma_platform_data_channel { + bool rx; + unsigned int bytes_per_line; + unsigned int descriptors; + unsigned int descriptor_elements; +}; + +/** + * struct timb_dma_platform_data - Platform data of the timberdale DMA driver + * @nr_channels: Number of defined channels in the channels array. + * @channels: Definition of the each channel. + * + */ +struct timb_dma_platform_data { + unsigned nr_channels; + struct timb_dma_platform_data_channel channels[32]; +}; + +#endif |