/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_DMA_DIRECTION_H #define _LINUX_DMA_DIRECTION_H enum dma_data_direction { DMA_BIDIRECTIONAL = 0, DMA_TO_DEVICE = 1, DMA_FROM_DEVICE = 2, DMA_NONE = 3, }; static inline int valid_dma_direction(enum dma_data_direction dir) { return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE || dir == DMA_FROM_DEVICE; } #endif /* _LINUX_DMA_DIRECTION_H */