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authorMarek Szyprowski <m.szyprowski@samsung.com>2014-10-14 02:51:09 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-14 04:18:12 +0400
commitde9e14eebf33a60712a52a0bc6e08c043c0aba53 (patch)
tree7b681bf9d5cb6a7909c8d9090aaa868d3e22ccf2 /include/linux/cma.h
parent7bfa5ab6fa1b18f53fb94f922e107e6fbdc5e485 (diff)
downloadlinux-de9e14eebf33a60712a52a0bc6e08c043c0aba53.tar.xz
drivers: dma-contiguous: add initialization from device tree
Add a function to create CMA region from previously reserved memory and add support for handling 'shared-dma-pool' reserved-memory device tree nodes. Based on previous code provided by Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Laura Abbott <lauraa@codeaurora.org> Cc: Josh Cartwright <joshc@codeaurora.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/cma.h')
-rw-r--r--include/linux/cma.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/cma.h b/include/linux/cma.h
index 371b93042520..0430ed05d3b9 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -22,6 +22,9 @@ extern int __init cma_declare_contiguous(phys_addr_t size,
phys_addr_t base, phys_addr_t limit,
phys_addr_t alignment, unsigned int order_per_bit,
bool fixed, struct cma **res_cma);
+extern int cma_init_reserved_mem(phys_addr_t size,
+ phys_addr_t base, int order_per_bit,
+ struct cma **res_cma);
extern struct page *cma_alloc(struct cma *cma, int count, unsigned int align);
extern bool cma_release(struct cma *cma, struct page *pages, int count);
#endif