/* * Coldfire generic GPIO pinmux support. * * (C) Copyright 2009, Steven King <sfking@fdwdc.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef pinmux_h #define pinmux_h #define MCFPINMUX_NONE -1 extern int mcf_pinmux_request(unsigned, unsigned); extern void mcf_pinmux_release(unsigned, unsigned); static inline int mcf_pinmux_is_valid(unsigned pinmux) { return pinmux != MCFPINMUX_NONE; } #endif