linux-imx

/*

 *   Apple "Magic" Wireless Mouse driver

 *

 *   Copyright (c) 2010 Michael Poole <mdpoole@troilus.org>

 *   Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.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.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/device.h>

#include <linux/hid.h>

#include <linux/input/mt.h>

#include <linux/module.h>

#include <linux/slab.h>

​

#include "hid-ids.h"

​

static bool emulate_3button = true;

module_param(emulate_3button, bool, 0644);

MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");

​

static int middle_button_start = -350;

static int middle_button_stop = +350;

​

static bool emulate_scroll_wheel = true;

module_param(emulate_scroll_wheel, bool, 0644);

MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");

​

static unsigned int scroll_speed = 32;

static int param_set_scroll_speed(const char *val,

                  const struct kernel_param *kp) {

    unsigned long speed;

    if (!val || kstrtoul(val, 0, &speed) || speed > 63)

        return -EINVAL;

    scroll_speed = speed;

    return 0;

}

module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);

MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");

​

static bool scroll_acceleration = false;

module_param(scroll_acceleration, bool, 0644);

MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");

​

static bool report_undeciphered;

module_param(report_undeciphered, bool, 0644);

MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");

​

#define TRACKPAD_REPORT_ID 0x28

#define TRACKPAD2_USB_REPORT_ID 0x02

#define TRACKPAD2_BT_REPORT_ID 0x31

#define MOUSE_REPORT_ID    0x29

#define DOUBLE_REPORT_ID   0xf7

/* These definitions are not precise, but they're close enough.  (Bits

 * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem

 * to be some kind of bit mask -- 0x20 may be a near-field reading,