release/src-rt-6.x.4708/linux/linux-2.6.36/arch/m68k/include/asm/pinmux.h

   1 /*
   2  * Coldfire generic GPIO pinmux support.
   3  *
   4  * (C) Copyright 2009, Steven King <sfking@fdwdc.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #ifndef pinmux_h
  17 #define pinmux_h
  18
  19 #define MCFPINMUX_NONE          -1
  20
  21 extern int mcf_pinmux_request(unsigned, unsigned);
  22 extern void mcf_pinmux_release(unsigned, unsigned);
  23
  24 static inline int mcf_pinmux_is_valid(unsigned pinmux)
  25 {
  26         return pinmux != MCFPINMUX_NONE;
  27 }
  28
  29 #endif