linux-kernel - [PATCH 12/14] staging: android: ion: Declare helpers for carveout and chunk heaps

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Date:   Fri, 11 Jan 2019 12:05:21 -0600
From:   "Andrew F. Davis" <afd@...com>
To:     Laura Abbott <labbott@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>
CC:     <devel@...verdev.osuosl.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, "Andrew F . Davis" <afd@...com>
Subject: [PATCH 12/14] staging: android: ion: Declare helpers for carveout and chunk heaps

When enabled the helpers functions for creating carveout and chunk heaps
should have declarations in the ION header.

Signed-off-by: Andrew F. Davis <afd@...com>
---
 drivers/staging/android/ion/ion.h | 33 +++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h
index e291299fd35f..97b2876b165a 100644
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -308,4 +308,37 @@ void ion_page_pool_free(struct ion_page_pool *pool, struct page *page);
 int ion_page_pool_shrink(struct ion_page_pool *pool, gfp_t gfp_mask,
 			 int nr_to_scan);
 
+#ifdef CONFIG_ION_CARVEOUT_HEAP
+/**
+ * ion_carveout_heap_create
+ * @base:		base address of carveout memory
+ * @size:		size of carveout memory region
+ *
+ * Creates a carveout ion_heap using the passed in data
+ */
+struct ion_heap *ion_carveout_heap_create(phys_addr_t base, size_t size);
+#else
+static inline struct ion_heap *ion_carveout_heap_create(phys_addr_t base, size_t size)
+{
+	return ERR_PTR(-ENODEV);
+}
+#endif
+
+#ifdef CONFIG_ION_CHUNK_HEAP
+/**
+ * ion_chunk_heap_create
+ * @base:		base address of carveout memory
+ * @size:		size of carveout memory region
+ * @chunk_size:		minimum allocation granularity
+ *
+ * Creates a chunk ion_heap using the passed in data
+ */
+struct ion_heap *ion_chunk_heap_create(phys_addr_t base, size_t size, size_t chunk_size);
+#else
+static inline struct ion_heap *ion_chunk_heap_create(phys_addr_t base, size_t size, size_t chunk_size)
+{
+	return ERR_PTR(-ENODEV);
+}
+#endif
+
 #endif /* _ION_H */
-- 
2.19.1