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/*

 * 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 */