dma: import linux/dma-direction.h to consolidate enum dma_data_direction
Import include/linux/dma-direction.h from Linux 4.13-rc7 and delete
duplicated definitions of enum dma_data_direction.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/include/linux/dma-direction.h b/include/linux/dma-direction.h
new file mode 100644
index 0000000..95b6a82
--- /dev/null
+++ b/include/linux/dma-direction.h
@@ -0,0 +1,13 @@
+#ifndef _LINUX_DMA_DIRECTION_H
+#define _LINUX_DMA_DIRECTION_H
+/*
+ * These definitions mirror those in pci.h, so they can be used
+ * interchangeably with their PCI_ counterparts.
+ */
+enum dma_data_direction {
+ DMA_BIDIRECTIONAL = 0,
+ DMA_TO_DEVICE = 1,
+ DMA_FROM_DEVICE = 2,
+ DMA_NONE = 3,
+};
+#endif