From: Jianqun xu <jay.xu@rock-chips.com>
Date: Mon, 30 Nov 2015 12:09:03 +0000 (+0800)
Subject: staging: ion: export ion map/ummap iommu APIs
X-Git-Tag: firefly_0821_release~3572
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f0a6ed49af3196e420b19acabea0b96a99ec3892;p=firefly-linux-kernel-4.4.55.git

staging: ion: export ion map/ummap iommu APIs

Add these two functions to ion.h:
- ion_map_iommu
- ion_unmap_iommu

Change-Id: Ide5aec58cdf43862b1f135fd2cd224d044375793
Signed-off-by: Jianqun xu <jay.xu@rock-chips.com>
---

diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h
index 86575525db34..bd35c9c259d4 100644
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -202,6 +202,30 @@ int ion_share_dma_buf_fd(struct ion_client *client, struct ion_handle *handle);
  */
 struct ion_handle *ion_import_dma_buf(struct ion_client *client, int fd);
 
+struct device;
+
+#ifdef CONFIG_RK_IOMMU
+int ion_map_iommu(struct device *iommu_dev, struct ion_client *client,
+		  struct ion_handle *handle, unsigned long *iova,
+		  unsigned long *size);
+
+void ion_unmap_iommu(struct device *iommu_dev, struct ion_client *client,
+		     struct ion_handle *handle);
+
+#else
+static inline int ion_map_iommu(struct device *iommu_dev, struct ion_client *client,
+		  struct ion_handle *handle, unsigned long *iova,
+		  unsigned long *size)
+{
+	return 0;
+}
+
+static inline void ion_unmap_iommu(struct device *iommu_dev, struct ion_client *client,
+		     struct ion_handle *handle)
+{
+}
+#endif
+
 void ion_handle_get(struct ion_handle *handle);
 
 int ion_handle_put(struct ion_handle *handle);