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0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _LINUX_DMA_DIRECTION_H
0003 #define _LINUX_DMA_DIRECTION_H
0004 
0005 enum dma_data_direction {
0006     DMA_BIDIRECTIONAL = 0,
0007     DMA_TO_DEVICE = 1,
0008     DMA_FROM_DEVICE = 2,
0009     DMA_NONE = 3,
0010 };
0011 
0012 static inline int valid_dma_direction(enum dma_data_direction dir)
0013 {
0014     return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE ||
0015         dir == DMA_FROM_DEVICE;
0016 }
0017 
0018 #endif /* _LINUX_DMA_DIRECTION_H */