include/pca953x.h

   1 /*
   2  * Copyright 2008 Extreme Engineering Solutions, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * Version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  16  * MA 02111-1307 USA
  17  */
  18
  19 #ifndef __PCA953X_H_
  20 #define __PCA953X_H_
  21
  22 #define PCA953X_IN              0x00
  23 #define PCA953X_OUT             0x01
  24 #define PCA953X_POL             0x02
  25 #define PCA953X_CONF            0x03
  26
  27 #define PCA953X_OUT_LOW         0
  28 #define PCA953X_OUT_HIGH        1
  29 #define PCA953X_POL_NORMAL      0
  30 #define PCA953X_POL_INVERT      1
  31 #define PCA953X_DIR_OUT         0
  32 #define PCA953X_DIR_IN          1
  33
  34 int pca953x_set_val(u8 chip, uint mask, uint data);
  35 int pca953x_set_pol(u8 chip, uint mask, uint data);
  36 int pca953x_set_dir(u8 chip, uint mask, uint data);
  37 int pca953x_get_val(u8 chip);
  38
  39 #endif /* __PCA953X_H_ */