linux-imx

/*

 *  HIDPP protocol for Logitech Unifying receivers

 *

 *  Copyright (c) 2011 Logitech (c)

 *  Copyright (c) 2012-2013 Google (c)

 *  Copyright (c) 2013-2014 Red Hat Inc.

 */

​

/*

 * 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; version 2 of the License.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/device.h>

#include <linux/input.h>

#include <linux/usb.h>

#include <linux/hid.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/sched.h>

#include <linux/sched/clock.h>

#include <linux/kfifo.h>

#include <linux/input/mt.h>

#include <linux/workqueue.h>

#include <linux/atomic.h>

#include <linux/fixp-arith.h>

#include <asm/unaligned.h>

#include "usbhid/usbhid.h"

#include "hid-ids.h"

​

MODULE_LICENSE("GPL");

MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");

MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>");

​

static bool disable_raw_mode;

module_param(disable_raw_mode, bool, 0644);

MODULE_PARM_DESC(disable_raw_mode,

    "Disable Raw mode reporting for touchpads and keep firmware gestures.");

​

static bool disable_tap_to_click;

module_param(disable_tap_to_click, bool, 0644);

MODULE_PARM_DESC(disable_tap_to_click,

    "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently).");

​

#define REPORT_ID_HIDPP_SHORT           0x10

#define REPORT_ID_HIDPP_LONG            0x11

#define REPORT_ID_HIDPP_VERY_LONG       0x12

​

#define HIDPP_REPORT_SHORT_LENGTH       7

#define HIDPP_REPORT_LONG_LENGTH        20

#define HIDPP_REPORT_VERY_LONG_LENGTH       64

​

#define HIDPP_QUIRK_CLASS_WTP           BIT(0)

#define HIDPP_QUIRK_CLASS_M560          BIT(1)

#define HIDPP_QUIRK_CLASS_K400          BIT(2)

#define HIDPP_QUIRK_CLASS_G920          BIT(3)

#define HIDPP_QUIRK_CLASS_K750          BIT(4)

​

/* bits 2..20 are reserved for classes */

/* #define HIDPP_QUIRK_CONNECT_EVENTS       BIT(21) disabled */