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+/*
+Copyright 2011 Jun Wako <wakojun@gmail.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, either version 2 of the License, or
+(at your option) any later version.
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef PS2_MOUSE_H
+#define PS2_MOUSE_H
+
+#include <stdbool.h>
+
+#define PS2_MOUSE_READ_DATA 0xEB
+
+/*
+ * Data format:
+ * byte|7 6 5 4 3 2 1 0
+ * ----+--------------------------------------------------------------
+ * 0|Yovflw Xovflw Ysign Xsign 1 Middle Right Left
+ * 1| X movement(0-255)
+ * 2| Y movement(0-255)
+ */
+#define PS2_MOUSE_BTN_MASK 0x07
+#define PS2_MOUSE_BTN_LEFT 0
+#define PS2_MOUSE_BTN_RIGHT 1
+#define PS2_MOUSE_BTN_MIDDLE 2
+#define PS2_MOUSE_X_SIGN 4
+#define PS2_MOUSE_Y_SIGN 5
+#define PS2_MOUSE_X_OVFLW 6
+#define PS2_MOUSE_Y_OVFLW 7
+
+
+/*
+ * Scroll by mouse move with pressing button
+ */
+/* mouse button to start scrolling; set 0 to disable scroll */
+#ifndef PS2_MOUSE_SCROLL_BTN_MASK
+#define PS2_MOUSE_SCROLL_BTN_MASK (1<<PS2_MOUSE_BTN_MIDDLE)
+#endif
+/* send button event when button is released within this value(ms); set 0 to disable */
+#ifndef PS2_MOUSE_SCROLL_BTN_SEND
+#define PS2_MOUSE_SCROLL_BTN_SEND 300
+#endif
+/* divide virtical and horizontal mouse move by this to convert to scroll move */
+#ifndef PS2_MOUSE_SCROLL_DIVISOR_V
+#define PS2_MOUSE_SCROLL_DIVISOR_V 2
+#endif
+#ifndef PS2_MOUSE_SCROLL_DIVISOR_H
+#define PS2_MOUSE_SCROLL_DIVISOR_H 2
+#endif
+
+
+uint8_t ps2_mouse_init(void);
+void ps2_mouse_task(void);
+
+#endif