/*
* Driver for simulating a mouse on GPIO lines.
*
* Copyright (C) 2007 Atmel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/

#ifndef _GPIO_MOUSE_H
#define _GPIO_MOUSE_H

#define GPIO_MOUSE_POLARITY_ACT_HIGH 0x00
#define GPIO_MOUSE_POLARITY_ACT_LOW 0x01

#define GPIO_MOUSE_PIN_UP 0
#define GPIO_MOUSE_PIN_DOWN 1
#define GPIO_MOUSE_PIN_LEFT 2
#define GPIO_MOUSE_PIN_RIGHT 3
#define GPIO_MOUSE_PIN_BLEFT 4
#define GPIO_MOUSE_PIN_BMIDDLE 5
#define GPIO_MOUSE_PIN_BRIGHT 6
#define GPIO_MOUSE_PIN_MAX 7

/**
* struct gpio_mouse_platform_data
* @scan_ms: integer in ms specifying the scan periode.
* @polarity: Pin polarity, active high or low.
* @up: GPIO line for up value.
* @down: GPIO line for down value.
* @left: GPIO line for left value.
* @right: GPIO line for right value.
* @bleft: GPIO line for left button.
* @bmiddle: GPIO line for middle button.
* @bright: GPIO line for right button.
*
* This struct must be added to the platform_device in the board code.
* It is used by the gpio_mouse driver to setup GPIO lines and to
* calculate mouse movement.
*/
struct gpio_mouse_platform_data {
int scan_ms;
int polarity;

union {
struct {
int up;
int down;
int left;
int right;

int bleft;
int bmiddle;
int bright;
};
int pins[GPIO_MOUSE_PIN_MAX];
};
};

#endif /* _GPIO_MOUSE_H */