From de9e14eebf33a60712a52a0bc6e08c043c0aba53 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 13 Oct 2014 15:51:09 -0700 Subject: 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 Signed-off-by: Marek Szyprowski Cc: Arnd Bergmann Cc: Michal Nazarewicz Cc: Grant Likely Cc: Laura Abbott Cc: Josh Cartwright Cc: Joonsoo Kim Cc: Kyungmin Park Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cma.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') 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 -- cgit v1.2.3-58-ga151