ion: Add reserve function to ion

Rather than requiring each platform call memblock_remove or reserve
from the board file, add this to ion

Change-Id: Ie418a692c13e9e0cfe93ecc83d253d3ce860fc83
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/ion.h b/include/linux/ion.h
index 9d196e2f9bb3..860b160ab5ed 100644
--- a/include/linux/ion.h
+++ b/include/linux/ion.h
@@ -87,6 +87,17 @@ struct ion_platform_data {
 };
 
 /**
+ * ion_reserve() - reserve memory for ion heaps if applicable
+ * @data:	platform data specifying starting physical address and
+ *		size
+ *
+ * Calls memblock reserve to set aside memory for heaps that are
+ * located at specific memory addresses or of specfic sizes not
+ * managed by the kernel
+ */
+void ion_reserve(struct ion_platform_data *data);
+
+/**
  * ion_client_create() -  allocate a client and returns it
  * @dev:	the global ion device
  * @heap_mask:	mask of heaps this client can allocate from