include/pca953x.h

   1 /*
   2  * Copyright 2008 Extreme Engineering Solutions, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0
   5  */
   6
   7 #ifndef __PCA953X_H_
   8 #define __PCA953X_H_
   9
  10 #define PCA953X_IN              0x00
  11 #define PCA953X_OUT             0x01
  12 #define PCA953X_POL             0x02
  13 #define PCA953X_CONF            0x03
  14
  15 #define PCA953X_OUT_LOW         0
  16 #define PCA953X_OUT_HIGH        1
  17 #define PCA953X_POL_NORMAL      0
  18 #define PCA953X_POL_INVERT      1
  19 #define PCA953X_DIR_OUT         0
  20 #define PCA953X_DIR_IN          1
  21
  22 int pca953x_set_val(u8 chip, uint mask, uint data);
  23 int pca953x_set_pol(u8 chip, uint mask, uint data);
  24 int pca953x_set_dir(u8 chip, uint mask, uint data);
  25 int pca953x_get_val(u8 chip);
  26
  27 #endif /* __PCA953X_H_ */