include/linux/of_iommu.h

   1 #ifndef __OF_IOMMU_H
   2 #define __OF_IOMMU_H
   3
   4 #ifdef CONFIG_OF_IOMMU
   5
   6 extern int of_get_dma_window(struct device_node *dn, const char *prefix,
   7                              int index, unsigned long *busno, dma_addr_t *addr,
   8                              size_t *size);
   9
  10 #else
  11
  12 static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
  13                             int index, unsigned long *busno, dma_addr_t *addr,
  14                             size_t *size)
  15 {
  16         return -EINVAL;
  17 }
  18
  19 #endif  /* CONFIG_OF_IOMMU */
  20
  21 #endif /* __OF_IOMMU_H */