Add generic touchscreen driver which allows calibration (apps/ layer will follow later).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20055 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 48 insertions, 0 deletions

diff --git a/firmware/export/touchscreen.h b/firmware/export/touchscreen.h
new file mode 100755
index 0000000..0d8233a
--- /dev/null
+++ b/firmware/export/touchscreen.h
@@ -0,0 +1,48 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __TOUCHSCREEN_INCLUDE_H_
+#define __TOUCHSCREEN_INCLUDE_H_
+
+struct touchscreen_calibration
+{
+    int   x[3];
+    int xfb[3];
+    int   y[3];
+    int yfb[3];
+};
+
+enum touchscreen_mode
+{
+    TOUCHSCREEN_POINT = 0, /* touchscreen returns pixel co-ords */
+    TOUCHSCREEN_BUTTON,    /* touchscreen returns BUTTON_* area codes
+                              actual pixel value will still be accessible
+                              from button_get_data */
+};
+
+int touchscreen_calibrate(struct touchscreen_calibration *cal);
+int touchscreen_to_pixels(int x, int y, int *data);
+void touchscreen_set_mode(enum touchscreen_mode mode);
+enum touchscreen_mode touchscreen_get_mode(void);
+void touchscreen_disable_mapping(void);
+void touchscreen_reset_mapping(void);
+
+#endif /* __TOUCHSCREEN_INCLUDE_H_ */