arch/sh/kernel/ioport.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/sh/kernel/ioport.c
   4  *
   5  * Copyright (C) 2000  Niibe Yutaka
   6  * Copyright (C) 2005 - 2007 Paul Mundt
   7  */
   8 #include <linux/module.h>
   9 #include <linux/io.h>
  10 #include <asm/io_trapped.h>
  11
  12 unsigned long sh_io_port_base __read_mostly = -1;
  13 EXPORT_SYMBOL(sh_io_port_base);
  14
  15 void __iomem *ioport_map(unsigned long port, unsigned int nr)
  16 {
  17         void __iomem *ret;
  18
  19         ret = __ioport_map_trapped(port, nr);
  20         if (ret)
  21                 return ret;
  22
  23         return (void __iomem *)(port + sh_io_port_base);
  24 }
  25 EXPORT_SYMBOL(ioport_map);
  26
  27 void ioport_unmap(void __iomem *addr)
  28 {
  29 }
  30 EXPORT_SYMBOL(ioport_unmap);