1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * timb_dma.h timberdale FPGA DMA driver defines 4*4882a593Smuzhiyun * Copyright (c) 2010 Intel Corporation 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* Supports: 8*4882a593Smuzhiyun * Timberdale FPGA DMA engine 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #ifndef _LINUX_TIMB_DMA_H 12*4882a593Smuzhiyun #define _LINUX_TIMB_DMA_H 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /** 15*4882a593Smuzhiyun * struct timb_dma_platform_data_channel - Description of each individual 16*4882a593Smuzhiyun * DMA channel for the timberdale DMA driver 17*4882a593Smuzhiyun * @rx: true if this channel handles data in the direction to 18*4882a593Smuzhiyun * the CPU. 19*4882a593Smuzhiyun * @bytes_per_line: Number of bytes per line, this is specific for channels 20*4882a593Smuzhiyun * handling video data. For other channels this shall be left to 0. 21*4882a593Smuzhiyun * @descriptors: Number of descriptors to allocate for this channel. 22*4882a593Smuzhiyun * @descriptor_elements: Number of elements in each descriptor. 23*4882a593Smuzhiyun * 24*4882a593Smuzhiyun */ 25*4882a593Smuzhiyun struct timb_dma_platform_data_channel { 26*4882a593Smuzhiyun bool rx; 27*4882a593Smuzhiyun unsigned int bytes_per_line; 28*4882a593Smuzhiyun unsigned int descriptors; 29*4882a593Smuzhiyun unsigned int descriptor_elements; 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /** 33*4882a593Smuzhiyun * struct timb_dma_platform_data - Platform data of the timberdale DMA driver 34*4882a593Smuzhiyun * @nr_channels: Number of defined channels in the channels array. 35*4882a593Smuzhiyun * @channels: Definition of the each channel. 36*4882a593Smuzhiyun * 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun struct timb_dma_platform_data { 39*4882a593Smuzhiyun unsigned nr_channels; 40*4882a593Smuzhiyun struct timb_dma_platform_data_channel channels[32]; 41*4882a593Smuzhiyun }; 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #endif 44