dmaengine: Add helper function to convert direction value to text

[mirror_ubuntu-jammy-kernel.git] / include / linux / dmaengine.h

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index b44b9c608709597ecfe84456f553da944868827a..62225d46908bdb2303a6e547795f47ea97b4c956 100644 (file)
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -1545,4 +1545,23 @@ static inline struct dma_chan
 
        return __dma_request_channel(mask, fn, fn_param, NULL);
 }
+
+static inline char *
+dmaengine_get_direction_text(enum dma_transfer_direction dir)
+{
+       switch (dir) {
+       case DMA_DEV_TO_MEM:
+               return "DEV_TO_MEM";
+       case DMA_MEM_TO_DEV:
+               return "MEM_TO_DEV";
+       case DMA_MEM_TO_MEM:
+               return "MEM_TO_MEM";
+       case DMA_DEV_TO_DEV:
+               return "DEV_TO_DEV";
+       default:
+               break;
+       }
+
+       return "invalid";
+}
 #endif /* DMAENGINE_H */