include/asm-generic/dma-contiguous.h

   1 #ifndef ASM_DMA_CONTIGUOUS_H
   2 #define ASM_DMA_CONTIGUOUS_H
   3
   4 #ifdef __KERNEL__
   5 #ifdef CONFIG_CMA
   6
   7 #include <linux/device.h>
   8 #include <linux/dma-contiguous.h>
   9
  10 static inline struct cma *dev_get_cma_area(struct device *dev)
  11 {
  12         if (dev && dev->cma_area)
  13                 return dev->cma_area;
  14         return dma_contiguous_default_area;
  15 }
  16
  17 static inline void dev_set_cma_area(struct device *dev, struct cma *cma)
  18 {
  19         if (dev)
  20                 dev->cma_area = cma;
  21         if (!dev || !dma_contiguous_default_area)
  22                 dma_contiguous_default_area = cma;
  23 }
  24
  25 #endif
  26 #endif
  27
  28 #endif