diff options
Diffstat (limited to 'arch/arm/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 4fff837..9ce57c9 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -9,6 +9,9 @@ #include <asm-generic/dma-coherent.h> #include <asm/memory.h> +#ifdef CONFIG_DMA_CMA +#include <linux/dma-contiguous.h> +#endif #ifdef __arch_page_to_dma #error Please update to __arch_pfn_to_dma @@ -172,6 +175,21 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size, { } +#ifdef CONFIG_DMA_CMA +static inline int dma_prepare_alloc_coherent(struct device *dev, size_t size) +{ + int count = PAGE_ALIGN(size) >> PAGE_SHIFT; + int align = get_order(PAGE_ALIGN(size)); + + return dma_prepare_alloc_from_contiguous(dev, count, align); +} +#else +static inline int dma_prepare_alloc_coherent(struct device *dev, size_t size) +{ + return 0; +} +#endif + /** * dma_alloc_coherent - allocate consistent memory for DMA * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices |