diff options
Diffstat (limited to 'include/linux/dma-direction.h')
-rw-r--r-- | include/linux/dma-direction.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/dma-direction.h b/include/linux/dma-direction.h new file mode 100644 index 000000000..a2fe4571b --- /dev/null +++ b/include/linux/dma-direction.h @@ -0,0 +1,18 @@ +/* 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 */ |