drivers/of/address.c

   1
   2 #include <linux/io.h>
   3 #include <linux/ioport.h>
   4 #include <linux/of_address.h>
   5
   6 /**
   7  * of_iomap - Maps the memory mapped IO for a given device_node
   8  * @device:     the device whose io range will be mapped
   9  * @index:      index of the io range
  10  *
  11  * Returns a pointer to the mapped memory
  12  */
  13 void __iomem *of_iomap(struct device_node *np, int index)
  14 {
  15         struct resource res;
  16
  17         if (of_address_to_resource(np, index, &res))
  18                 return NULL;
  19
  20         return ioremap(res.start, 1 + res.end - res.start);
  21 }
  22 EXPORT_SYMBOL(of_iomap);