include/linux/platform_data/amd_xdma.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2022, Advanced Micro Devices, Inc.
   4  */
   5
   6 #ifndef _PLATDATA_AMD_XDMA_H
   7 #define _PLATDATA_AMD_XDMA_H
   8
   9 #include <linux/dmaengine.h>
  10
  11 /**
  12  * struct xdma_chan_info - DMA channel information
  13  *      This information is used to match channel when request dma channel
  14  * @dir: Channel transfer direction
  15  */
  16 struct xdma_chan_info {
  17         enum dma_transfer_direction dir;
  18 };
  19
  20 #define XDMA_FILTER_PARAM(chan_info)    ((void *)(chan_info))
  21
  22 struct dma_slave_map;
  23
  24 /**
  25  * struct xdma_platdata - platform specific data for XDMA engine
  26  * @max_dma_channels: Maximum dma channels in each direction
  27  */
  28 struct xdma_platdata {
  29         u32 max_dma_channels;
  30         u32 device_map_cnt;
  31         struct dma_slave_map *device_map;
  32 };
  33
  34 #endif /* _PLATDATA_AMD_XDMA_H */