diff options
| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2014-10-13 15:51:09 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-14 02:18:12 +0200 |
| commit | de9e14eebf33a60712a52a0bc6e08c043c0aba53 (patch) | |
| tree | 7b681bf9d5cb6a7909c8d9090aaa868d3e22ccf2 /include | |
| parent | drivers: dma-coherent: add initialization from device tree (diff) | |
| download | linux-dev-de9e14eebf33a60712a52a0bc6e08c043c0aba53.tar.xz linux-dev-de9e14eebf33a60712a52a0bc6e08c043c0aba53.zip | |
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')
| -rw-r--r-- | include/linux/cma.h | 3 |
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 |