firmware/export/touchscreen.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Maurus Cuelenaere
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #ifndef __TOUCHSCREEN_INCLUDE_H_
  23 #define __TOUCHSCREEN_INCLUDE_H_
  24
  25 struct touchscreen_calibration
  26 {
  27     int x[3][2];
  28     int y[3][2];
  29 };
  30
  31 struct touchscreen_parameter
  32 {
  33     int A, B, C, D, E, F;
  34     int divider;
  35 };
  36
  37 enum touchscreen_mode
  38 {
  39     TOUCHSCREEN_POINT = 0, /* touchscreen returns pixel co-ords */
  40     TOUCHSCREEN_BUTTON,    /* touchscreen returns BUTTON_* area codes
  41                               actual pixel value will still be accessible
  42                               from button_get_data */
  43 };
  44
  45 extern struct touchscreen_parameter calibration_parameters;
  46 extern const struct touchscreen_parameter default_calibration_parameters;
  47 int touchscreen_calibrate(struct touchscreen_calibration *cal);
  48 int touchscreen_to_pixels(int x, int y, int *data);
  49 void touchscreen_set_mode(enum touchscreen_mode mode);
  50 enum touchscreen_mode touchscreen_get_mode(void);
  51 void touchscreen_disable_mapping(void);
  52 void touchscreen_reset_mapping(void);
  53
  54 #endif /* __TOUCHSCREEN_INCLUDE_H_ */