include/linux/dma-direction.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_DMA_DIRECTION_H
   3 #define _LINUX_DMA_DIRECTION_H
   4
   5 enum dma_data_direction {
   6         DMA_BIDIRECTIONAL = 0,
   7         DMA_TO_DEVICE = 1,
   8         DMA_FROM_DEVICE = 2,
   9         DMA_NONE = 3,
  10 };
  11
  12 static inline int valid_dma_direction(enum dma_data_direction dir)
  13 {
  14         return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE ||
  15                 dir == DMA_FROM_DEVICE;
  16 }
  17
  18 #endif /* _LINUX_DMA_DIRECTION_H */