1 files changed, 28 insertions, 0 deletions

diff --git a/include/asm-generic/dma-contiguous.h b/include/asm-generic/dma-contiguous.h
new file mode 100644
index 000000000000..c544356b374b
--- /dev/null
+++ b/include/asm-generic/dma-contiguous.h
@@ -0,0 +1,28 @@
+#ifndef ASM_DMA_CONTIGUOUS_H
+#define ASM_DMA_CONTIGUOUS_H
+
+#ifdef __KERNEL__
+#ifdef CONFIG_CMA
+
+#include <linux/device.h>
+#include <linux/dma-contiguous.h>
+
+static inline struct cma *dev_get_cma_area(struct device *dev)
+{
+        if (dev && dev->cma_area)
+                return dev->cma_area;
+        return dma_contiguous_default_area;
+}
+
+static inline void dev_set_cma_area(struct device *dev, struct cma *cma)
+{
+        if (dev)
+                dev->cma_area = cma;
+        if (!dev || !dma_contiguous_default_area)
+                dma_contiguous_default_area = cma;
+}
+
+#endif
+#endif
+
+#endif