LXR linux/include/linux/timb

   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 */
  25struct 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 */
  38struct timb_dma_platform_data {
  39        unsigned nr_channels;
  40        struct timb_dma_platform_data_channel channels[32];
  41};
  42
  43#endif
  44