ion: fix dma APIs

[deliverable/linux.git] / drivers / staging / android / ion / ion_priv.h

diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h
index f2635631e9befc7ab6e4a7f9113695babdc0bfe0..d1fa7719b2402fecd151916513e63462ea99badd 100644 (file)
--- a/drivers/staging/android/ion/ion_priv.h
+++ b/drivers/staging/android/ion/ion_priv.h
@@ -17,6 +17,7 @@
 #ifndef _ION_PRIV_H
 #define _ION_PRIV_H
 
+#include <linux/dma-direction.h>
 #include <linux/kref.h>
 #include <linux/mm_types.h>
 #include <linux/mutex.h>
@@ -357,4 +358,15 @@ void ion_page_pool_free(struct ion_page_pool *, struct page *);
 int ion_page_pool_shrink(struct ion_page_pool *pool, gfp_t gfp_mask,
                          int nr_to_scan);
 
+/**
+ * ion_pages_sync_for_device - cache flush pages for use with the specified
+ *                             device
+ * @dev:               the device the pages will be used with
+ * @page:              the first page to be flushed
+ * @size:              size in bytes of region to be flushed
+ * @dir:               direction of dma transfer
+ */
+void ion_pages_sync_for_device(struct device *dev, struct page *page,
+               size_t size, enum dma_data_direction dir);
+
 #endif /* _ION_PRIV_H */