/*

   *  HID driver for Sony / PS2 / PS3 / PS4 BD devices.

   *
   *  Copyright (c) 1999 Andreas Gal
   *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc

   *  Copyright (c) 2008 Jiri Slaby

   *  Copyright (c) 2012 David Dillow <dave@thedillows.org>
   *  Copyright (c) 2006-2013 Jiri Kosina

   *  Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com>

   *  Copyright (c) 2014 Frank Praznik <frank.praznik@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.
   */

  /*
   * NOTE: in order for the Sony PS3 BD Remote Control to be found by

   * a Bluetooth host, the key combination Start+Enter has to be kept pressed
   * for about 7 seconds with the Bluetooth Host Controller in discovering mode.
   *
   * There will be no PIN request from the device.
   */

  #include <linux/device.h>
  #include <linux/hid.h>
  #include <linux/module.h>

  #include <linux/slab.h>

  #include <linux/leds.h>

  #include <linux/power_supply.h>
  #include <linux/spinlock.h>

  #include <linux/list.h>

  #include <linux/idr.h>

  #include <linux/input/mt.h>

  
  #include "hid-ids.h"

  #define VAIO_RDESC_CONSTANT       BIT(0)
  #define SIXAXIS_CONTROLLER_USB    BIT(1)
  #define SIXAXIS_CONTROLLER_BT     BIT(2)
  #define BUZZ_CONTROLLER           BIT(3)
  #define PS3REMOTE                 BIT(4)

  #define DUALSHOCK4_CONTROLLER_USB BIT(5)
  #define DUALSHOCK4_CONTROLLER_BT  BIT(6)

  #define MOTION_CONTROLLER_USB     BIT(7)
  #define MOTION_CONTROLLER_BT      BIT(8)

  #define NAVIGATION_CONTROLLER_USB BIT(9)
  #define NAVIGATION_CONTROLLER_BT  BIT(10)

  #define SINO_LITE_CONTROLLER      BIT(11)

  #define SIXAXIS_CONTROLLER (SIXAXIS_CONTROLLER_USB | SIXAXIS_CONTROLLER_BT)

  #define MOTION_CONTROLLER (MOTION_CONTROLLER_USB | MOTION_CONTROLLER_BT)

  #define NAVIGATION_CONTROLLER (NAVIGATION_CONTROLLER_USB |\
  				NAVIGATION_CONTROLLER_BT)

  #define DUALSHOCK4_CONTROLLER (DUALSHOCK4_CONTROLLER_USB |\
  				DUALSHOCK4_CONTROLLER_BT)

  #define SONY_LED_SUPPORT (SIXAXIS_CONTROLLER | BUZZ_CONTROLLER |\

  				DUALSHOCK4_CONTROLLER | MOTION_CONTROLLER |\
  				NAVIGATION_CONTROLLER)

  #define SONY_BATTERY_SUPPORT (SIXAXIS_CONTROLLER | DUALSHOCK4_CONTROLLER |\

  				MOTION_CONTROLLER_BT | NAVIGATION_CONTROLLER)

  #define SONY_FF_SUPPORT (SIXAXIS_CONTROLLER | DUALSHOCK4_CONTROLLER |\
  				MOTION_CONTROLLER)

  
  #define MAX_LEDS 4

  /*
   * The Sixaxis reports both digital and analog values for each button on the
   * controller except for Start, Select and the PS button.  The controller ends
   * up reporting 27 axes which causes them to spill over into the multi-touch
   * axis values.  Additionally, the controller only has 20 actual, physical axes
   * so there are several unused axes in between the used ones.
   */

  static u8 sixaxis_rdesc[] = {

  	0x05, 0x01,         /*  Usage Page (Desktop),               */

  	0x09, 0x04,         /*  Usage (Joystick),                   */

  	0xA1, 0x01,         /*  Collection (Application),           */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x01,         /*          Report ID (1),              */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x01,         /*          Report Count (1),           */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x81, 0x03,         /*          Input (Constant, Variable), */
  	0x75, 0x01,         /*          Report Size (1),            */
  	0x95, 0x13,         /*          Report Count (19),          */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x25, 0x01,         /*          Logical Maximum (1),        */
  	0x35, 0x00,         /*          Physical Minimum (0),       */
  	0x45, 0x01,         /*          Physical Maximum (1),       */
  	0x05, 0x09,         /*          Usage Page (Button),        */
  	0x19, 0x01,         /*          Usage Minimum (01h),        */
  	0x29, 0x13,         /*          Usage Maximum (13h),        */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x75, 0x01,         /*          Report Size (1),            */
  	0x95, 0x0D,         /*          Report Count (13),          */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x81, 0x03,         /*          Input (Constant, Variable), */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xA1, 0x00,         /*          Collection (Physical),      */
  	0x75, 0x08,         /*              Report Size (8),        */
  	0x95, 0x04,         /*              Report Count (4),       */
  	0x35, 0x00,         /*              Physical Minimum (0),   */
  	0x46, 0xFF, 0x00,   /*              Physical Maximum (255), */
  	0x09, 0x30,         /*              Usage (X),              */
  	0x09, 0x31,         /*              Usage (Y),              */
  	0x09, 0x32,         /*              Usage (Z),              */
  	0x09, 0x35,         /*              Usage (Rz),             */
  	0x81, 0x02,         /*              Input (Variable),       */
  	0xC0,               /*          End Collection,             */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */
  	0x95, 0x13,         /*          Report Count (19),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x95, 0x0C,         /*          Report Count (12),          */
  	0x81, 0x01,         /*          Input (Constant),           */
  	0x75, 0x10,         /*          Report Size (16),           */
  	0x95, 0x04,         /*          Report Count (4),           */
  	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
  	0x46, 0xFF, 0x03,   /*          Physical Maximum (1023),    */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x02,         /*          Report ID (2),              */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEE,         /*          Report ID (238),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEF,         /*          Report ID (239),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xC0                /*  End Collection                      */

  };

  /* PS/3 Motion controller */

  static u8 motion_rdesc[] = {

  	0x05, 0x01,         /*  Usage Page (Desktop),               */
  	0x09, 0x04,         /*  Usage (Joystick),                   */
  	0xA1, 0x01,         /*  Collection (Application),           */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x01,         /*          Report ID (1),              */

  	0x75, 0x01,         /*          Report Size (1),            */

  	0x95, 0x15,         /*          Report Count (21),          */

  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x25, 0x01,         /*          Logical Maximum (1),        */
  	0x35, 0x00,         /*          Physical Minimum (0),       */
  	0x45, 0x01,         /*          Physical Maximum (1),       */
  	0x05, 0x09,         /*          Usage Page (Button),        */
  	0x19, 0x01,         /*          Usage Minimum (01h),        */

  	0x29, 0x15,         /*          Usage Maximum (15h),        */
  	0x81, 0x02,         /*          Input (Variable),           * Buttons */
  	0x95, 0x0B,         /*          Report Count (11),          */

  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */

  	0x81, 0x03,         /*          Input (Constant, Variable), * Padding */

  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */

  	0xA1, 0x00,         /*          Collection (Physical),      */
  	0x75, 0x08,         /*              Report Size (8),        */

  	0x95, 0x01,         /*              Report Count (1),       */

  	0x35, 0x00,         /*              Physical Minimum (0),   */
  	0x46, 0xFF, 0x00,   /*              Physical Maximum (255), */
  	0x09, 0x30,         /*              Usage (X),              */

  	0x81, 0x02,         /*              Input (Variable),       * Trigger */

  	0xC0,               /*          End Collection,             */

  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x07,         /*          Report Count (7),           * skip 7 bytes */

  	0x81, 0x02,         /*          Input (Variable),           */

  	0x05, 0x01,         /*          Usage Page (Desktop),       */

  	0x75, 0x10,         /*          Report Size (16),           */

  	0x46, 0xFF, 0xFF,   /*          Physical Maximum (65535),   */
  	0x27, 0xFF, 0xFF, 0x00, 0x00, /*      Logical Maximum (65535),    */
  	0x95, 0x03,         /*          Report Count (3),           * 3x Accels */
  	0x09, 0x33,         /*              Usage (rX),             */
  	0x09, 0x34,         /*              Usage (rY),             */
  	0x09, 0x35,         /*              Usage (rZ),             */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x95, 0x03,         /*          Report Count (3),           * Skip Accels 2nd frame */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */

  	0x09, 0x01,         /*          Usage (Pointer),            */

  	0x95, 0x03,         /*          Report Count (3),           * 3x Gyros */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x95, 0x03,         /*          Report Count (3),           * Skip Gyros 2nd frame */

  	0x81, 0x02,         /*          Input (Variable),           */

  	0x75, 0x0C,         /*          Report Size (12),           */
  	0x46, 0xFF, 0x0F,   /*          Physical Maximum (4095),    */
  	0x26, 0xFF, 0x0F,   /*          Logical Maximum (4095),     */
  	0x95, 0x04,         /*          Report Count (4),           * Skip Temp and Magnetometers */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x95, 0x06,         /*          Report Count (6),           * Skip Timestamp and Extension Bytes */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x91, 0x02,         /*          Output (Variable),          */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */

  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x02,         /*          Report ID (2),              */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEE,         /*          Report ID (238),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEF,         /*          Report ID (239),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xC0                /*  End Collection                      */
  };

  /* PS/3 Navigation controller */

  static u8 navigation_rdesc[] = {

  	0x05, 0x01,         /*  Usage Page (Desktop),               */

  	0x09, 0x04,         /*  Usage (Joystick),                   */

  	0xA1, 0x01,         /*  Collection (Application),           */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x01,         /*          Report ID (1),              */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x01,         /*          Report Count (1),           */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x81, 0x03,         /*          Input (Constant, Variable), */
  	0x75, 0x01,         /*          Report Size (1),            */
  	0x95, 0x13,         /*          Report Count (19),          */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x25, 0x01,         /*          Logical Maximum (1),        */
  	0x35, 0x00,         /*          Physical Minimum (0),       */
  	0x45, 0x01,         /*          Physical Maximum (1),       */
  	0x05, 0x09,         /*          Usage Page (Button),        */
  	0x19, 0x01,         /*          Usage Minimum (01h),        */
  	0x29, 0x13,         /*          Usage Maximum (13h),        */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x75, 0x01,         /*          Report Size (1),            */
  	0x95, 0x0D,         /*          Report Count (13),          */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x81, 0x03,         /*          Input (Constant, Variable), */
  	0x15, 0x00,         /*          Logical Minimum (0),        */
  	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xA1, 0x00,         /*          Collection (Physical),      */
  	0x75, 0x08,         /*              Report Size (8),        */
  	0x95, 0x02,         /*              Report Count (2),       */
  	0x35, 0x00,         /*              Physical Minimum (0),   */
  	0x46, 0xFF, 0x00,   /*              Physical Maximum (255), */
  	0x09, 0x30,         /*              Usage (X),              */
  	0x09, 0x31,         /*              Usage (Y),              */
  	0x81, 0x02,         /*              Input (Variable),       */
  	0xC0,               /*          End Collection,             */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x95, 0x06,         /*          Report Count (6),           */
  	0x81, 0x03,         /*          Input (Constant, Variable), */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x05,         /*          Report Count (5),           */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */

  	0x95, 0x01,         /*          Report Count (1),           */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x05, 0x01,         /*          Usage Page (Desktop),       */
  	0x95, 0x01,         /*          Report Count (1),           */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x81, 0x02,         /*          Input (Variable),           */
  	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
  	0x95, 0x1E,         /*          Report Count (24),          */

  	0x81, 0x02,         /*          Input (Variable),           */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0x91, 0x02,         /*          Output (Variable),          */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0x02,         /*          Report ID (2),              */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEE,         /*          Report ID (238),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xA1, 0x02,         /*      Collection (Logical),           */
  	0x85, 0xEF,         /*          Report ID (239),            */
  	0x75, 0x08,         /*          Report Size (8),            */
  	0x95, 0x30,         /*          Report Count (48),          */
  	0x09, 0x01,         /*          Usage (Pointer),            */
  	0xB1, 0x02,         /*          Feature (Variable),         */
  	0xC0,               /*      End Collection,                 */
  	0xC0                /*  End Collection                      */
  };

  /*
   * The default descriptor doesn't provide mapping for the accelerometers

   * or orientation sensors.  This fixed descriptor maps the accelerometers
   * to usage values 0x40, 0x41 and 0x42 and maps the orientation sensors
   * to usage values 0x43, 0x44 and 0x45.
   */

  static u8 dualshock4_usb_rdesc[] = {

  	0x05, 0x01,         /*  Usage Page (Desktop),               */
  	0x09, 0x05,         /*  Usage (Gamepad),                    */
  	0xA1, 0x01,         /*  Collection (Application),           */
  	0x85, 0x01,         /*      Report ID (1),                  */
  	0x09, 0x30,         /*      Usage (X),                      */
  	0x09, 0x31,         /*      Usage (Y),                      */
  	0x09, 0x32,         /*      Usage (Z),                      */
  	0x09, 0x35,         /*      Usage (Rz),                     */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x04,         /*      Report Count (4),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x39,         /*      Usage (Hat Switch),             */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x25, 0x07,         /*      Logical Maximum (7),            */
  	0x35, 0x00,         /*      Physical Minimum (0),           */
  	0x46, 0x3B, 0x01,   /*      Physical Maximum (315),         */
  	0x65, 0x14,         /*      Unit (Degrees),                 */
  	0x75, 0x04,         /*      Report Size (4),                */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0x81, 0x42,         /*      Input (Variable, Null State),   */
  	0x65, 0x00,         /*      Unit,                           */
  	0x05, 0x09,         /*      Usage Page (Button),            */
  	0x19, 0x01,         /*      Usage Minimum (01h),            */
  	0x29, 0x0E,         /*      Usage Maximum (0Eh),            */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x25, 0x01,         /*      Logical Maximum (1),            */
  	0x75, 0x01,         /*      Report Size (1),                */
  	0x95, 0x0E,         /*      Report Count (14),              */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x75, 0x06,         /*      Report Size (6),                */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0x15, 0x00,         /*      Logical Minimum (0),            */

  	0x25, 0x3F,         /*      Logical Maximum (63),           */

  	0x81, 0x02,         /*      Input (Variable),               */
  	0x05, 0x01,         /*      Usage Page (Desktop),           */
  	0x09, 0x33,         /*      Usage (Rx),                     */
  	0x09, 0x34,         /*      Usage (Ry),                     */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x05, 0x01,         /*      Usage Page (Desktop),           */
  	0x19, 0x40,         /*      Usage Minimum (40h),            */
  	0x29, 0x42,         /*      Usage Maximum (42h),            */
  	0x16, 0x00, 0x80,   /*      Logical Minimum (-32768),       */
  	0x26, 0x00, 0x7F,   /*      Logical Maximum (32767),        */
  	0x75, 0x10,         /*      Report Size (16),               */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x19, 0x43,         /*      Usage Minimum (43h),            */
  	0x29, 0x45,         /*      Usage Maximum (45h),            */

  	0x16, 0x00, 0xE0,   /*      Logical Minimum (-8192),        */
  	0x26, 0xFF, 0x1F,   /*      Logical Maximum (8191),         */

  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x15, 0x00,         /*      Logical Minimum (0),            */

  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */

  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x27,         /*      Report Count (39),              */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x85, 0x05,         /*      Report ID (5),                  */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x1F,         /*      Report Count (31),              */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x04,         /*      Report ID (4),                  */
  	0x09, 0x23,         /*      Usage (23h),                    */
  	0x95, 0x24,         /*      Report Count (36),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x02,         /*      Report ID (2),                  */
  	0x09, 0x24,         /*      Usage (24h),                    */
  	0x95, 0x24,         /*      Report Count (36),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x08,         /*      Report ID (8),                  */
  	0x09, 0x25,         /*      Usage (25h),                    */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x10,         /*      Report ID (16),                 */
  	0x09, 0x26,         /*      Usage (26h),                    */
  	0x95, 0x04,         /*      Report Count (4),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x11,         /*      Report ID (17),                 */
  	0x09, 0x27,         /*      Usage (27h),                    */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x12,         /*      Report ID (18),                 */
  	0x06, 0x02, 0xFF,   /*      Usage Page (FF02h),             */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x95, 0x0F,         /*      Report Count (15),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x13,         /*      Report ID (19),                 */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x16,         /*      Report Count (22),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x14,         /*      Report ID (20),                 */
  	0x06, 0x05, 0xFF,   /*      Usage Page (FF05h),             */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x95, 0x10,         /*      Report Count (16),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x15,         /*      Report ID (21),                 */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x95, 0x2C,         /*      Report Count (44),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x06, 0x80, 0xFF,   /*      Usage Page (FF80h),             */
  	0x85, 0x80,         /*      Report ID (128),                */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x95, 0x06,         /*      Report Count (6),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x81,         /*      Report ID (129),                */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x95, 0x06,         /*      Report Count (6),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x82,         /*      Report ID (130),                */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x05,         /*      Report Count (5),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x83,         /*      Report ID (131),                */
  	0x09, 0x23,         /*      Usage (23h),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x84,         /*      Report ID (132),                */
  	0x09, 0x24,         /*      Usage (24h),                    */
  	0x95, 0x04,         /*      Report Count (4),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x85,         /*      Report ID (133),                */
  	0x09, 0x25,         /*      Usage (25h),                    */
  	0x95, 0x06,         /*      Report Count (6),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x86,         /*      Report ID (134),                */
  	0x09, 0x26,         /*      Usage (26h),                    */
  	0x95, 0x06,         /*      Report Count (6),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x87,         /*      Report ID (135),                */
  	0x09, 0x27,         /*      Usage (27h),                    */
  	0x95, 0x23,         /*      Report Count (35),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x88,         /*      Report ID (136),                */
  	0x09, 0x28,         /*      Usage (28h),                    */
  	0x95, 0x22,         /*      Report Count (34),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x89,         /*      Report ID (137),                */
  	0x09, 0x29,         /*      Usage (29h),                    */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x90,         /*      Report ID (144),                */
  	0x09, 0x30,         /*      Usage (30h),                    */
  	0x95, 0x05,         /*      Report Count (5),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x91,         /*      Report ID (145),                */
  	0x09, 0x31,         /*      Usage (31h),                    */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x92,         /*      Report ID (146),                */
  	0x09, 0x32,         /*      Usage (32h),                    */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x93,         /*      Report ID (147),                */
  	0x09, 0x33,         /*      Usage (33h),                    */
  	0x95, 0x0C,         /*      Report Count (12),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA0,         /*      Report ID (160),                */
  	0x09, 0x40,         /*      Usage (40h),                    */
  	0x95, 0x06,         /*      Report Count (6),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA1,         /*      Report ID (161),                */
  	0x09, 0x41,         /*      Usage (41h),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA2,         /*      Report ID (162),                */
  	0x09, 0x42,         /*      Usage (42h),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA3,         /*      Report ID (163),                */
  	0x09, 0x43,         /*      Usage (43h),                    */
  	0x95, 0x30,         /*      Report Count (48),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA4,         /*      Report ID (164),                */
  	0x09, 0x44,         /*      Usage (44h),                    */
  	0x95, 0x0D,         /*      Report Count (13),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA5,         /*      Report ID (165),                */
  	0x09, 0x45,         /*      Usage (45h),                    */
  	0x95, 0x15,         /*      Report Count (21),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA6,         /*      Report ID (166),                */
  	0x09, 0x46,         /*      Usage (46h),                    */
  	0x95, 0x15,         /*      Report Count (21),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF0,         /*      Report ID (240),                */
  	0x09, 0x47,         /*      Usage (47h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF1,         /*      Report ID (241),                */
  	0x09, 0x48,         /*      Usage (48h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF2,         /*      Report ID (242),                */
  	0x09, 0x49,         /*      Usage (49h),                    */
  	0x95, 0x0F,         /*      Report Count (15),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA7,         /*      Report ID (167),                */
  	0x09, 0x4A,         /*      Usage (4Ah),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA8,         /*      Report ID (168),                */
  	0x09, 0x4B,         /*      Usage (4Bh),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA9,         /*      Report ID (169),                */
  	0x09, 0x4C,         /*      Usage (4Ch),                    */
  	0x95, 0x08,         /*      Report Count (8),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAA,         /*      Report ID (170),                */
  	0x09, 0x4E,         /*      Usage (4Eh),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAB,         /*      Report ID (171),                */
  	0x09, 0x4F,         /*      Usage (4Fh),                    */
  	0x95, 0x39,         /*      Report Count (57),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAC,         /*      Report ID (172),                */
  	0x09, 0x50,         /*      Usage (50h),                    */
  	0x95, 0x39,         /*      Report Count (57),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAD,         /*      Report ID (173),                */
  	0x09, 0x51,         /*      Usage (51h),                    */
  	0x95, 0x0B,         /*      Report Count (11),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAE,         /*      Report ID (174),                */
  	0x09, 0x52,         /*      Usage (52h),                    */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xAF,         /*      Report ID (175),                */
  	0x09, 0x53,         /*      Usage (53h),                    */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xB0,         /*      Report ID (176),                */
  	0x09, 0x54,         /*      Usage (54h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0xC0                /*  End Collection                      */

  };

  /*
   * The default behavior of the Dualshock 4 is to send reports using report

   * type 1 when running over Bluetooth. However, when feature report 2 is
   * requested during the controller initialization it starts sending input
   * reports in report 17.  Since report 17 is undefined in the default HID

   * descriptor the button and axis definitions must be moved to report 17 or

   * the HID layer won't process the received input.

   */
  static u8 dualshock4_bt_rdesc[] = {
  	0x05, 0x01,         /*  Usage Page (Desktop),               */
  	0x09, 0x05,         /*  Usage (Gamepad),                    */
  	0xA1, 0x01,         /*  Collection (Application),           */
  	0x85, 0x01,         /*      Report ID (1),                  */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x0A,         /*      Report Count (9),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x04, 0xFF,   /*      Usage Page (FF04h),             */
  	0x85, 0x02,         /*      Report ID (2),                  */
  	0x09, 0x24,         /*      Usage (24h),                    */
  	0x95, 0x24,         /*      Report Count (36),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA3,         /*      Report ID (163),                */
  	0x09, 0x25,         /*      Usage (25h),                    */
  	0x95, 0x30,         /*      Report Count (48),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x05,         /*      Report ID (5),                  */
  	0x09, 0x26,         /*      Usage (26h),                    */
  	0x95, 0x28,         /*      Report Count (40),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x06,         /*      Report ID (6),                  */
  	0x09, 0x27,         /*      Usage (27h),                    */
  	0x95, 0x34,         /*      Report Count (52),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x07,         /*      Report ID (7),                  */
  	0x09, 0x28,         /*      Usage (28h),                    */
  	0x95, 0x30,         /*      Report Count (48),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x08,         /*      Report ID (8),                  */
  	0x09, 0x29,         /*      Usage (29h),                    */
  	0x95, 0x2F,         /*      Report Count (47),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x06, 0x03, 0xFF,   /*      Usage Page (FF03h),             */
  	0x85, 0x03,         /*      Report ID (3),                  */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x95, 0x26,         /*      Report Count (38),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x04,         /*      Report ID (4),                  */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x2E,         /*      Report Count (46),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF0,         /*      Report ID (240),                */
  	0x09, 0x47,         /*      Usage (47h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF1,         /*      Report ID (241),                */
  	0x09, 0x48,         /*      Usage (48h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xF2,         /*      Report ID (242),                */
  	0x09, 0x49,         /*      Usage (49h),                    */
  	0x95, 0x0F,         /*      Report Count (15),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x11,         /*      Report ID (17),                 */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x05, 0x01,         /*      Usage Page (Desktop),           */
  	0x09, 0x30,         /*      Usage (X),                      */
  	0x09, 0x31,         /*      Usage (Y),                      */
  	0x09, 0x32,         /*      Usage (Z),                      */
  	0x09, 0x35,         /*      Usage (Rz),                     */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x04,         /*      Report Count (4),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x39,         /*      Usage (Hat Switch),             */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x25, 0x07,         /*      Logical Maximum (7),            */
  	0x75, 0x04,         /*      Report Size (4),                */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0x81, 0x42,         /*      Input (Variable, Null State),   */
  	0x05, 0x09,         /*      Usage Page (Button),            */
  	0x19, 0x01,         /*      Usage Minimum (01h),            */
  	0x29, 0x0E,         /*      Usage Maximum (0Eh),            */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x25, 0x01,         /*      Logical Maximum (1),            */
  	0x75, 0x01,         /*      Report Size (1),                */
  	0x95, 0x0E,         /*      Report Count (14),              */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x75, 0x06,         /*      Report Size (6),                */
  	0x95, 0x01,         /*      Report Count (1),               */
  	0x81, 0x01,         /*      Input (Constant),               */
  	0x05, 0x01,         /*      Usage Page (Desktop),           */
  	0x09, 0x33,         /*      Usage (Rx),                     */
  	0x09, 0x34,         /*      Usage (Ry),                     */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x02,         /*      Report Count (2),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x05, 0x01,         /*      Usage Page (Desktop),           */
  	0x19, 0x40,         /*      Usage Minimum (40h),            */
  	0x29, 0x42,         /*      Usage Maximum (42h),            */
  	0x16, 0x00, 0x80,   /*      Logical Minimum (-32768),       */
  	0x26, 0x00, 0x7F,   /*      Logical Maximum (32767),        */
  	0x75, 0x10,         /*      Report Size (16),               */
  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x19, 0x43,         /*      Usage Minimum (43h),            */
  	0x29, 0x45,         /*      Usage Maximum (45h),            */

  	0x16, 0x00, 0xE0,   /*      Logical Minimum (-8192),        */
  	0x26, 0xFF, 0x1F,   /*      Logical Maximum (8191),         */

  	0x95, 0x03,         /*      Report Count (3),               */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x06, 0x00, 0xFF,   /*      Usage Page (FF00h),             */
  	0x09, 0x20,         /*      Usage (20h),                    */
  	0x15, 0x00,         /*      Logical Minimum (0),            */
  	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x31,         /*      Report Count (51),              */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x21,         /*      Usage (21h),                    */
  	0x75, 0x08,         /*      Report Size (8),                */
  	0x95, 0x4D,         /*      Report Count (77),              */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x12,         /*      Report ID (18),                 */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x8D,         /*      Report Count (141),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x23,         /*      Usage (23h),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x13,         /*      Report ID (19),                 */
  	0x09, 0x24,         /*      Usage (24h),                    */
  	0x95, 0xCD,         /*      Report Count (205),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x25,         /*      Usage (25h),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x14,         /*      Report ID (20),                 */
  	0x09, 0x26,         /*      Usage (26h),                    */
  	0x96, 0x0D, 0x01,   /*      Report Count (269),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x27,         /*      Usage (27h),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x15,         /*      Report ID (21),                 */
  	0x09, 0x28,         /*      Usage (28h),                    */
  	0x96, 0x4D, 0x01,   /*      Report Count (333),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x29,         /*      Usage (29h),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x16,         /*      Report ID (22),                 */
  	0x09, 0x2A,         /*      Usage (2Ah),                    */
  	0x96, 0x8D, 0x01,   /*      Report Count (397),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x2B,         /*      Usage (2Bh),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x17,         /*      Report ID (23),                 */
  	0x09, 0x2C,         /*      Usage (2Ch),                    */
  	0x96, 0xCD, 0x01,   /*      Report Count (461),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x2D,         /*      Usage (2Dh),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x18,         /*      Report ID (24),                 */
  	0x09, 0x2E,         /*      Usage (2Eh),                    */
  	0x96, 0x0D, 0x02,   /*      Report Count (525),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x2F,         /*      Usage (2Fh),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x85, 0x19,         /*      Report ID (25),                 */
  	0x09, 0x30,         /*      Usage (30h),                    */
  	0x96, 0x22, 0x02,   /*      Report Count (546),             */
  	0x81, 0x02,         /*      Input (Variable),               */
  	0x09, 0x31,         /*      Usage (31h),                    */
  	0x91, 0x02,         /*      Output (Variable),              */
  	0x06, 0x80, 0xFF,   /*      Usage Page (FF80h),             */
  	0x85, 0x82,         /*      Report ID (130),                */
  	0x09, 0x22,         /*      Usage (22h),                    */
  	0x95, 0x3F,         /*      Report Count (63),              */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x83,         /*      Report ID (131),                */
  	0x09, 0x23,         /*      Usage (23h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x84,         /*      Report ID (132),                */
  	0x09, 0x24,         /*      Usage (24h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x90,         /*      Report ID (144),                */
  	0x09, 0x30,         /*      Usage (30h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x91,         /*      Report ID (145),                */
  	0x09, 0x31,         /*      Usage (31h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x92,         /*      Report ID (146),                */
  	0x09, 0x32,         /*      Usage (32h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0x93,         /*      Report ID (147),                */
  	0x09, 0x33,         /*      Usage (33h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA0,         /*      Report ID (160),                */
  	0x09, 0x40,         /*      Usage (40h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0x85, 0xA4,         /*      Report ID (164),                */
  	0x09, 0x44,         /*      Usage (44h),                    */
  	0xB1, 0x02,         /*      Feature (Variable),             */
  	0xC0                /*  End Collection                      */
  };

  static u8 ps3remote_rdesc[] = {

  	0x05, 0x01,          /* GUsagePage Generic Desktop */
  	0x09, 0x05,          /* LUsage 0x05 [Game Pad] */
  	0xA1, 0x01,          /* MCollection Application (mouse, keyboard) */
  
  	 /* Use collection 1 for joypad buttons */
  	 0xA1, 0x02,         /* MCollection Logical (interrelated data) */

  	  /*
  	   * Ignore the 1st byte, maybe it is used for a controller
  	   * number but it's not needed for correct operation
  	   */

  	  0x75, 0x08,        /* GReportSize 0x08 [8] */
  	  0x95, 0x01,        /* GReportCount 0x01 [1] */
  	  0x81, 0x01,        /* MInput 0x01 (Const[0] Arr[1] Abs[2]) */

  	  /*
  	   * Bytes from 2nd to 4th are a bitmap for joypad buttons, for these
  	   * buttons multiple keypresses are allowed
  	   */

  	  0x05, 0x09,        /* GUsagePage Button */
  	  0x19, 0x01,        /* LUsageMinimum 0x01 [Button 1 (primary/trigger)] */
  	  0x29, 0x18,        /* LUsageMaximum 0x18 [Button 24] */
  	  0x14,              /* GLogicalMinimum [0] */
  	  0x25, 0x01,        /* GLogicalMaximum 0x01 [1] */
  	  0x75, 0x01,        /* GReportSize 0x01 [1] */
  	  0x95, 0x18,        /* GReportCount 0x18 [24] */
  	  0x81, 0x02,        /* MInput 0x02 (Data[0] Var[1] Abs[2]) */
  
  	  0xC0,              /* MEndCollection */
  
  	 /* Use collection 2 for remote control buttons */
  	 0xA1, 0x02,         /* MCollection Logical (interrelated data) */
  
  	  /* 5th byte is used for remote control buttons */
  	  0x05, 0x09,        /* GUsagePage Button */
  	  0x18,              /* LUsageMinimum [No button pressed] */
  	  0x29, 0xFE,        /* LUsageMaximum 0xFE [Button 254] */
  	  0x14,              /* GLogicalMinimum [0] */
  	  0x26, 0xFE, 0x00,  /* GLogicalMaximum 0x00FE [254] */
  	  0x75, 0x08,        /* GReportSize 0x08 [8] */
  	  0x95, 0x01,        /* GReportCount 0x01 [1] */
  	  0x80,              /* MInput  */

  	  /*
  	   * Ignore bytes from 6th to 11th, 6th to 10th are always constant at
  	   * 0xff and 11th is for press indication
  	   */

  	  0x75, 0x08,        /* GReportSize 0x08 [8] */
  	  0x95, 0x06,        /* GReportCount 0x06 [6] */
  	  0x81, 0x01,        /* MInput 0x01 (Const[0] Arr[1] Abs[2]) */
  
  	  /* 12th byte is for battery strength */
  	  0x05, 0x06,        /* GUsagePage Generic Device Controls */
  	  0x09, 0x20,        /* LUsage 0x20 [Battery Strength] */
  	  0x14,              /* GLogicalMinimum [0] */
  	  0x25, 0x05,        /* GLogicalMaximum 0x05 [5] */
  	  0x75, 0x08,        /* GReportSize 0x08 [8] */
  	  0x95, 0x01,        /* GReportCount 0x01 [1] */
  	  0x81, 0x02,        /* MInput 0x02 (Data[0] Var[1] Abs[2]) */
  
  	  0xC0,              /* MEndCollection */
  
  	 0xC0                /* MEndCollection [Game Pad] */
  };
  
  static const unsigned int ps3remote_keymap_joypad_buttons[] = {
  	[0x01] = KEY_SELECT,
  	[0x02] = BTN_THUMBL,		/* L3 */
  	[0x03] = BTN_THUMBR,		/* R3 */
  	[0x04] = BTN_START,
  	[0x05] = KEY_UP,
  	[0x06] = KEY_RIGHT,
  	[0x07] = KEY_DOWN,
  	[0x08] = KEY_LEFT,
  	[0x09] = BTN_TL2,		/* L2 */
  	[0x0a] = BTN_TR2,		/* R2 */
  	[0x0b] = BTN_TL,		/* L1 */
  	[0x0c] = BTN_TR,		/* R1 */
  	[0x0d] = KEY_OPTION,		/* options/triangle */
  	[0x0e] = KEY_BACK,		/* back/circle */
  	[0x0f] = BTN_0,			/* cross */
  	[0x10] = KEY_SCREEN,		/* view/square */
  	[0x11] = KEY_HOMEPAGE,		/* PS button */
  	[0x14] = KEY_ENTER,
  };
  static const unsigned int ps3remote_keymap_remote_buttons[] = {
  	[0x00] = KEY_1,
  	[0x01] = KEY_2,
  	[0x02] = KEY_3,
  	[0x03] = KEY_4,
  	[0x04] = KEY_5,
  	[0x05] = KEY_6,
  	[0x06] = KEY_7,
  	[0x07] = KEY_8,
  	[0x08] = KEY_9,
  	[0x09] = KEY_0,
  	[0x0e] = KEY_ESC,		/* return */
  	[0x0f] = KEY_CLEAR,
  	[0x16] = KEY_EJECTCD,
  	[0x1a] = KEY_MENU,		/* top menu */
  	[0x28] = KEY_TIME,
  	[0x30] = KEY_PREVIOUS,
  	[0x31] = KEY_NEXT,
  	[0x32] = KEY_PLAY,
  	[0x33] = KEY_REWIND,		/* scan back */
  	[0x34] = KEY_FORWARD,		/* scan forward */
  	[0x38] = KEY_STOP,
  	[0x39] = KEY_PAUSE,
  	[0x40] = KEY_CONTEXT_MENU,	/* pop up/menu */
  	[0x60] = KEY_FRAMEBACK,		/* slow/step back */
  	[0x61] = KEY_FRAMEFORWARD,	/* slow/step forward */
  	[0x63] = KEY_SUBTITLE,
  	[0x64] = KEY_AUDIO,
  	[0x65] = KEY_ANGLE,
  	[0x70] = KEY_INFO,		/* display */
  	[0x80] = KEY_BLUE,
  	[0x81] = KEY_RED,
  	[0x82] = KEY_GREEN,
  	[0x83] = KEY_YELLOW,
  };

  static const unsigned int buzz_keymap[] = {

  	/*
  	 * The controller has 4 remote buzzers, each with one LED and 5

  	 * buttons.

  	 *

  	 * We use the mapping chosen by the controller, which is:
  	 *
  	 * Key          Offset
  	 * -------------------
  	 * Buzz              1
  	 * Blue              5
  	 * Orange            4
  	 * Green             3
  	 * Yellow            2
  	 *
  	 * So, for example, the orange button on the third buzzer is mapped to
  	 * BTN_TRIGGER_HAPPY14
  	 */

  	 [1] = BTN_TRIGGER_HAPPY1,
  	 [2] = BTN_TRIGGER_HAPPY2,
  	 [3] = BTN_TRIGGER_HAPPY3,
  	 [4] = BTN_TRIGGER_HAPPY4,
  	 [5] = BTN_TRIGGER_HAPPY5,
  	 [6] = BTN_TRIGGER_HAPPY6,
  	 [7] = BTN_TRIGGER_HAPPY7,
  	 [8] = BTN_TRIGGER_HAPPY8,
  	 [9] = BTN_TRIGGER_HAPPY9,

  	[10] = BTN_TRIGGER_HAPPY10,
  	[11] = BTN_TRIGGER_HAPPY11,
  	[12] = BTN_TRIGGER_HAPPY12,
  	[13] = BTN_TRIGGER_HAPPY13,
  	[14] = BTN_TRIGGER_HAPPY14,
  	[15] = BTN_TRIGGER_HAPPY15,
  	[16] = BTN_TRIGGER_HAPPY16,
  	[17] = BTN_TRIGGER_HAPPY17,
  	[18] = BTN_TRIGGER_HAPPY18,
  	[19] = BTN_TRIGGER_HAPPY19,
  	[20] = BTN_TRIGGER_HAPPY20,
  };

  static enum power_supply_property sony_battery_props[] = {
  	POWER_SUPPLY_PROP_PRESENT,
  	POWER_SUPPLY_PROP_CAPACITY,
  	POWER_SUPPLY_PROP_SCOPE,
  	POWER_SUPPLY_PROP_STATUS,
  };

  struct sixaxis_led {

  	u8 time_enabled; /* the total time the led is active (0xff means forever) */
  	u8 duty_length;  /* how long a cycle is in deciseconds (0 means "really fast") */
  	u8 enabled;
  	u8 duty_off; /* % of duty_length the led is off (0xff means 100%) */
  	u8 duty_on;  /* % of duty_length the led is on (0xff mean 100%) */

  } __packed;
  
  struct sixaxis_rumble {

  	u8 padding;
  	u8 right_duration; /* Right motor duration (0xff means forever) */
  	u8 right_motor_on; /* Right (small) motor on/off, only supports values of 0 or 1 (off/on) */
  	u8 left_duration;    /* Left motor duration (0xff means forever) */
  	u8 left_motor_force; /* left (large) motor, supports force values from 0 to 255 */

  } __packed;
  
  struct sixaxis_output_report {

  	u8 report_id;

  	struct sixaxis_rumble rumble;

  	u8 padding[4];
  	u8 leds_bitmap; /* bitmap of enabled LEDs: LED_1 = 0x02, LED_2 = 0x04, ... */

  	struct sixaxis_led led[4];    /* LEDx at (4 - x) */
  	struct sixaxis_led _reserved; /* LED5, not actually soldered */
  } __packed;
  
  union sixaxis_output_report_01 {
  	struct sixaxis_output_report data;

  	u8 buf[36];

  };

  struct motion_output_report_02 {
  	u8 type, zero;
  	u8 r, g, b;
  	u8 zero2;
  	u8 rumble;
  };

  #define DS4_REPORT_0x02_SIZE 37
  #define DS4_REPORT_0x05_SIZE 32
  #define DS4_REPORT_0x11_SIZE 78
  #define DS4_REPORT_0x81_SIZE 7

  #define SIXAXIS_REPORT_0xF2_SIZE 17

  #define SIXAXIS_REPORT_0xF5_SIZE 8

  #define MOTION_REPORT_0x02_SIZE 49

  static DEFINE_SPINLOCK(sony_dev_list_lock);

  static LIST_HEAD(sony_device_list);

  static DEFINE_IDA(sony_device_id_allocator);

  struct sony_sc {

  	spinlock_t lock;

  	struct list_head list_node;

  	struct hid_device *hdev;

  	struct led_classdev *leds[MAX_LEDS];

  	unsigned long quirks;

  	struct work_struct state_worker;

  	void (*send_output_report)(struct sony_sc *);

  	struct power_supply *battery;
  	struct power_supply_desc battery_desc;

  	int device_id;

  	u8 *output_report_dmabuf;

  #ifdef CONFIG_SONY_FF

  	u8 left;
  	u8 right;

  #endif

  	u8 mac_address[6];
  	u8 worker_initialized;
  	u8 cable_state;
  	u8 battery_charging;
  	u8 battery_capacity;
  	u8 led_state[MAX_LEDS];
  	u8 resume_led_state[MAX_LEDS];
  	u8 led_delay_on[MAX_LEDS];
  	u8 led_delay_off[MAX_LEDS];
  	u8 led_count;

  };

  static u8 *sixaxis_fixup(struct hid_device *hdev, u8 *rdesc,

  			     unsigned int *rsize)
  {
  	*rsize = sizeof(sixaxis_rdesc);
  	return sixaxis_rdesc;
  }

  static u8 *motion_fixup(struct hid_device *hdev, u8 *rdesc,
  			     unsigned int *rsize)
  {
  	*rsize = sizeof(motion_rdesc);
  	return motion_rdesc;
  }

  static u8 *navigation_fixup(struct hid_device *hdev, u8 *rdesc,
  			     unsigned int *rsize)
  {
  	*rsize = sizeof(navigation_rdesc);
  	return navigation_rdesc;
  }

  static u8 *ps3remote_fixup(struct hid_device *hdev, u8 *rdesc,

  			     unsigned int *rsize)
  {
  	*rsize = sizeof(ps3remote_rdesc);
  	return ps3remote_rdesc;
  }
  
  static int ps3remote_mapping(struct hid_device *hdev, struct hid_input *hi,
  			     struct hid_field *field, struct hid_usage *usage,
  			     unsigned long **bit, int *max)
  {
  	unsigned int key = usage->hid & HID_USAGE;
  
  	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON)
  		return -1;
  
  	switch (usage->collection_index) {
  	case 1:
  		if (key >= ARRAY_SIZE(ps3remote_keymap_joypad_buttons))
  			return -1;
  
  		key = ps3remote_keymap_joypad_buttons[key];
  		if (!key)
  			return -1;
  		break;
  	case 2:
  		if (key >= ARRAY_SIZE(ps3remote_keymap_remote_buttons))
  			return -1;
  
  		key = ps3remote_keymap_remote_buttons[key];
  		if (!key)
  			return -1;
  		break;
  	default:
  		return -1;
  	}
  
  	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
  	return 1;
  }

  static u8 *sony_report_fixup(struct hid_device *hdev, u8 *rdesc,

  		unsigned int *rsize)

  {
  	struct sony_sc *sc = hid_get_drvdata(hdev);

  	if (sc->quirks & SINO_LITE_CONTROLLER)
  		return rdesc;

  	/*
  	 * Some Sony RF receivers wrongly declare the mouse pointer as a
  	 * a constant non-data variable.
  	 */
  	if ((sc->quirks & VAIO_RDESC_CONSTANT) && *rsize >= 56 &&
  	    /* usage page: generic desktop controls */
  	    /* rdesc[0] == 0x05 && rdesc[1] == 0x01 && */
  	    /* usage: mouse */
  	    rdesc[2] == 0x09 && rdesc[3] == 0x02 &&
  	    /* input (usage page for x,y axes): constant, variable, relative */
  	    rdesc[54] == 0x81 && rdesc[55] == 0x07) {

  		hid_info(hdev, "Fixing up Sony RF Receiver report descriptor
  ");

  		/* input: data, variable, relative */

  		rdesc[55] = 0x06;
  	}

  	/*
  	 * The default Dualshock 4 USB descriptor doesn't assign
  	 * the gyroscope values to corresponding axes so we need a
  	 * modified one.
  	 */

  	if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {

  		hid_info(hdev, "Using modified Dualshock 4 report descriptor with gyroscope axes
  ");
  		rdesc = dualshock4_usb_rdesc;
  		*rsize = sizeof(dualshock4_usb_rdesc);

  	} else if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {

  		hid_info(hdev, "Using modified Dualshock 4 Bluetooth report descriptor
  ");
  		rdesc = dualshock4_bt_rdesc;
  		*rsize = sizeof(dualshock4_bt_rdesc);

  	}

  	if (sc->quirks & SIXAXIS_CONTROLLER)
  		return sixaxis_fixup(hdev, rdesc, rsize);

  	if (sc->quirks & MOTION_CONTROLLER)
  		return motion_fixup(hdev, rdesc, rsize);

  	if (sc->quirks & NAVIGATION_CONTROLLER)

  		return navigation_fixup(hdev, rdesc, rsize);

  	if (sc->quirks & PS3REMOTE)
  		return ps3remote_fixup(hdev, rdesc, rsize);

  	return rdesc;

  }

  static void sixaxis_parse_report(struct sony_sc *sc, u8 *rd, int size)

  {

  	static const u8 sixaxis_battery_capacity[] = { 0, 1, 25, 50, 75, 100 };

  	unsigned long flags;

  	int offset;

  	u8 cable_state, battery_capacity, battery_charging;

  	/*
  	 * The sixaxis is charging if the battery value is 0xee

  	 * and it is fully charged if the value is 0xef.
  	 * It does not report the actual level while charging so it
  	 * is set to 100% while charging is in progress.
  	 */

  	offset = (sc->quirks & MOTION_CONTROLLER) ? 12 : 30;
  
  	if (rd[offset] >= 0xee) {

  		battery_capacity = 100;

  		battery_charging = !(rd[offset] & 0x01);

  		cable_state = 1;

  	} else {

  		u8 index = rd[offset] <= 5 ? rd[offset] : 5;

  		battery_capacity = sixaxis_battery_capacity[index];

  		battery_charging = 0;

  		cable_state = 0;

  	}

  
  	spin_lock_irqsave(&sc->lock, flags);
  	sc->cable_state = cable_state;
  	sc->battery_capacity = battery_capacity;
  	sc->battery_charging = battery_charging;
  	spin_unlock_irqrestore(&sc->lock, flags);
  }

  static void dualshock4_parse_report(struct sony_sc *sc, u8 *rd, int size)

  {

  	struct hid_input *hidinput = list_entry(sc->hdev->inputs.next,
  						struct hid_input, list);
  	struct input_dev *input_dev = hidinput->input;

  	unsigned long flags;

  	int n, offset;

  	u8 cable_state, battery_capacity, battery_charging;

  	/*
  	 * Battery and touchpad data starts at byte 30 in the USB report and

  	 * 32 in Bluetooth report.
  	 */
  	offset = (sc->quirks & DUALSHOCK4_CONTROLLER_USB) ? 30 : 32;

  	/*
  	 * The lower 4 bits of byte 30 contain the battery level

  	 * and the 5th bit contains the USB cable state.
  	 */

  	cable_state = (rd[offset] >> 4) & 0x01;
  	battery_capacity = rd[offset] & 0x0F;

  	/*
  	 * When a USB power source is connected the battery level ranges from

  	 * 0 to 10, and when running on battery power it ranges from 0 to 9.
  	 * A battery level above 10 when plugged in means charge completed.

  	 */

  	if (!cable_state || battery_capacity > 10)

  		battery_charging = 0;
  	else
  		battery_charging = 1;

  	if (!cable_state)
  		battery_capacity++;

  	if (battery_capacity > 10)

  		battery_capacity = 10;

  	battery_capacity *= 10;
  
  	spin_lock_irqsave(&sc->lock, flags);
  	sc->cable_state = cable_state;
  	sc->battery_capacity = battery_capacity;
  	sc->battery_charging = battery_charging;
  	spin_unlock_irqrestore(&sc->lock, flags);

  	offset += 5;

  	/*
  	 * The Dualshock 4 multi-touch trackpad data starts at offset 35 on USB

  	 * and 37 on Bluetooth.

  	 * The first 7 bits of the first byte is a counter and bit 8 is a touch
  	 * indicator that is 0 when pressed and 1 when not pressed.
  	 * The next 3 bytes are two 12 bit touch coordinates, X and Y.
  	 * The data for the second touch is in the same format and immediatly
  	 * follows the data for the first.
  	 */
  	for (n = 0; n < 2; n++) {

  		u16 x, y;

  
  		x = rd[offset+1] | ((rd[offset+2] & 0xF) << 8);
  		y = ((rd[offset+2] & 0xF0) >> 4) | (rd[offset+3] << 4);
  
  		input_mt_slot(input_dev, n);
  		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER,
  					!(rd[offset] >> 7));
  		input_report_abs(input_dev, ABS_MT_POSITION_X, x);
  		input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
  
  		offset += 4;
  	}

  }

  static int sony_raw_event(struct hid_device *hdev, struct hid_report *report,

  		u8 *rd, int size)

  {
  	struct sony_sc *sc = hid_get_drvdata(hdev);

  	/*
  	 * Sixaxis HID report has acclerometers/gyro with MSByte first, this

  	 * has to be BYTE_SWAPPED before passing up to joystick interface
  	 */

  	if ((sc->quirks & SIXAXIS_CONTROLLER) && rd[0] == 0x01 && size == 49) {

  		/*
  		 * When connected via Bluetooth the Sixaxis occasionally sends
  		 * a report with the second byte 0xff and the rest zeroed.
  		 *
  		 * This report does not reflect the actual state of the
  		 * controller must be ignored to avoid generating false input
  		 * events.
  		 */
  		if (rd[1] == 0xff)
  			return -EINVAL;

  		swap(rd[41], rd[42]);
  		swap(rd[43], rd[44]);
  		swap(rd[45], rd[46]);
  		swap(rd[47], rd[48]);

  
  		sixaxis_parse_report(sc, rd, size);

  	} else if ((sc->quirks & MOTION_CONTROLLER_BT) && rd[0] == 0x01 && size == 49) {
  		sixaxis_parse_report(sc, rd, size);

  	} else if ((sc->quirks & NAVIGATION_CONTROLLER) && rd[0] == 0x01 &&
  			size == 49) {
  		sixaxis_parse_report(sc, rd, size);

  	} else if (((sc->quirks & DUALSHOCK4_CONTROLLER_USB) && rd[0] == 0x01 &&
  			size == 64) || ((sc->quirks & DUALSHOCK4_CONTROLLER_BT)
  			&& rd[0] == 0x11 && size == 78)) {

  		dualshock4_parse_report(sc, rd, size);

  	}
  
  	return 0;
  }

  static int sony_mapping(struct hid_device *hdev, struct hid_input *hi,
  			struct hid_field *field, struct hid_usage *usage,
  			unsigned long **bit, int *max)
  {
  	struct sony_sc *sc = hid_get_drvdata(hdev);
  
  	if (sc->quirks & BUZZ_CONTROLLER) {
  		unsigned int key = usage->hid & HID_USAGE;
  
  		if ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON)
  			return -1;
  
  		switch (usage->collection_index) {
  		case 1:
  			if (key >= ARRAY_SIZE(buzz_keymap))
  				return -1;
  
  			key = buzz_keymap[key];
  			if (!key)
  				return -1;
  			break;
  		default:
  			return -1;
  		}
  
  		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
  		return 1;
  	}

  	if (sc->quirks & PS3REMOTE)
  		return ps3remote_mapping(hdev, hi, field, usage, bit, max);

  	/* Let hid-core decide for the others */
  	return 0;

  }

  static int sony_register_touchpad(struct hid_input *hi, int touch_count,
  					int w, int h)
  {
  	struct input_dev *input_dev = hi->input;
  	int ret;
  
  	ret = input_mt_init_slots(input_dev, touch_count, 0);
  	if (ret < 0)
  		return ret;
  
  	input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, w, 0, 0);
  	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, h, 0, 0);
  
  	return 0;
  }

  static int sony_input_configured(struct hid_device *hdev,

  					struct hid_input *hidinput)
  {
  	struct sony_sc *sc = hid_get_drvdata(hdev);

  	int ret;

  
  	/*
  	 * The Dualshock 4 touchpad supports 2 touches and has a

  	 * resolution of 1920x942 (44.86 dots/mm).

  	 */
  	if (sc->quirks & DUALSHOCK4_CONTROLLER) {

  		ret = sony_register_touchpad(hidinput, 2, 1920, 942);
  		if (ret) {

  			hid_err(sc->hdev,

  				"Unable to initialize multi-touch slots: %d
  ",
  				ret);
  			return ret;
  		}

  	}

  
  	return 0;

  }

  /*

   * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
   * to "operational".  Without this, the ps3 controller will not report any
   * events.
   */

  static int sixaxis_set_operational_usb(struct hid_device *hdev)

  {

  	const int buf_size =
  		max(SIXAXIS_REPORT_0xF2_SIZE, SIXAXIS_REPORT_0xF5_SIZE);

  	u8 *buf;

  	int ret;

  	buf = kmalloc(buf_size, GFP_KERNEL);

  	if (!buf)
  		return -ENOMEM;

  	ret = hid_hw_raw_request(hdev, 0xf2, buf, SIXAXIS_REPORT_0xF2_SIZE,
  				 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);

  	if (ret < 0) {
  		hid_err(hdev, "can't set operational mode: step 1
  ");
  		goto out;
  	}

  	/*
  	 * Some compatible controllers like the Speedlink Strike FX and
  	 * Gasia need another query plus an USB interrupt to get operational.
  	 */

  	ret = hid_hw_raw_request(hdev, 0xf5, buf, SIXAXIS_REPORT_0xF5_SIZE,
  				 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);

  	if (ret < 0) {
  		hid_err(hdev, "can't set operational mode: step 2
  ");
  		goto out;
  	}

  	ret = hid_hw_output_report(hdev, buf, 1);

  	if (ret < 0) {
  		hid_info(hdev, "can't set operational mode: step 3, ignoring
  ");
  		ret = 0;
  	}

  out:

  	kfree(buf);
  
  	return ret;
  }

  static int sixaxis_set_operational_bt(struct hid_device *hdev)

  {

  	static const u8 report[] = { 0xf4, 0x42, 0x03, 0x00, 0x00 };
  	u8 *buf;

  	int ret;
  
  	buf = kmemdup(report, sizeof(report), GFP_KERNEL);
  	if (!buf)
  		return -ENOMEM;
  
  	ret = hid_hw_raw_request(hdev, buf[0], buf, sizeof(report),

  				  HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

  
  	kfree(buf);
  
  	return ret;

  }

  /*
   * Requesting feature report 0x02 in Bluetooth mode changes the state of the

   * controller so that it sends full input reports of type 0x11.
   */
  static int dualshock4_set_operational_bt(struct hid_device *hdev)
  {

  	u8 *buf;

  	int ret;

  	buf = kmalloc(DS4_REPORT_0x02_SIZE, GFP_KERNEL);
  	if (!buf)
  		return -ENOMEM;
  
  	ret = hid_hw_raw_request(hdev, 0x02, buf, DS4_REPORT_0x02_SIZE,

  				HID_FEATURE_REPORT, HID_REQ_GET_REPORT);

  
  	kfree(buf);
  
  	return ret;

  }

  static void sixaxis_set_leds_from_id(struct sony_sc *sc)

  {

  	static const u8 sixaxis_leds[10][4] = {

  				{ 0x01, 0x00, 0x00, 0x00 },
  				{ 0x00, 0x01, 0x00, 0x00 },
  				{ 0x00, 0x00, 0x01, 0x00 },
  				{ 0x00, 0x00, 0x00, 0x01 },
  				{ 0x01, 0x00, 0x00, 0x01 },
  				{ 0x00, 0x01, 0x00, 0x01 },
  				{ 0x00, 0x00, 0x01, 0x01 },
  				{ 0x01, 0x00, 0x01, 0x01 },
  				{ 0x00, 0x01, 0x01, 0x01 },
  				{ 0x01, 0x01, 0x01, 0x01 }
  	};

  	int id = sc->device_id;
  
  	BUILD_BUG_ON(MAX_LEDS < ARRAY_SIZE(sixaxis_leds[0]));

  
  	if (id < 0)
  		return;
  
  	id %= 10;

  	memcpy(sc->led_state, sixaxis_leds[id], sizeof(sixaxis_leds[id]));

  }

  static void dualshock4_set_leds_from_id(struct sony_sc *sc)

  {
  	/* The first 4 color/index entries match what the PS4 assigns */

  	static const u8 color_code[7][3] = {

  			/* Blue   */	{ 0x00, 0x00, 0x01 },
  			/* Red	  */	{ 0x01, 0x00, 0x00 },
  			/* Green  */	{ 0x00, 0x01, 0x00 },
  			/* Pink   */	{ 0x02, 0x00, 0x01 },
  			/* Orange */	{ 0x02, 0x01, 0x00 },
  			/* Teal   */	{ 0x00, 0x01, 0x01 },
  			/* White  */	{ 0x01, 0x01, 0x01 }
  	};

  	int id = sc->device_id;
  
  	BUILD_BUG_ON(MAX_LEDS < ARRAY_SIZE(color_code[0]));

  
  	if (id < 0)
  		return;
  
  	id %= 7;

  	memcpy(sc->led_state, color_code[id], sizeof(color_code[id]));

  }

  static void buzz_set_leds(struct sony_sc *sc)

  {

  	struct hid_device *hdev = sc->hdev;

  	struct list_head *report_list =
  		&hdev->report_enum[HID_OUTPUT_REPORT].report_list;
  	struct hid_report *report = list_entry(report_list->next,
  		struct hid_report, list);

  	s32 *value = report->field[0]->value;

  	BUILD_BUG_ON(MAX_LEDS < 4);

  	value[0] = 0x00;

  	value[1] = sc->led_state[0] ? 0xff : 0x00;
  	value[2] = sc->led_state[1] ? 0xff : 0x00;
  	value[3] = sc->led_state[2] ? 0xff : 0x00;
  	value[4] = sc->led_state[3] ? 0xff : 0x00;

  	value[5] = 0x00;
  	value[6] = 0x00;
  	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
  }

  static void sony_set_leds(struct sony_sc *sc)

  {

  	if (!(sc->quirks & BUZZ_CONTROLLER))

  		schedule_work(&sc->state_worker);

  	else
  		buzz_set_leds(sc);

  }

  static void sony_led_set_brightness(struct led_classdev *led,

  				    enum led_brightness value)
  {
  	struct device *dev = led->dev->parent;

  	struct hid_device *hdev = to_hid_device(dev);

  	struct sony_sc *drv_data;

  
  	int n;

  	int force_update;

  
  	drv_data = hid_get_drvdata(hdev);

  	if (!drv_data) {

  		hid_err(hdev, "No device data
  ");
  		return;
  	}

  	/*
  	 * The Sixaxis on USB will override any LED settings sent to it
  	 * and keep flashing all of the LEDs until the PS button is pressed.
  	 * Updates, even if redundant, must be always be sent to the
  	 * controller to avoid having to toggle the state of an LED just to
  	 * stop the flashing later on.
  	 */
  	force_update = !!(drv_data->quirks & SIXAXIS_CONTROLLER_USB);

  	for (n = 0; n < drv_data->led_count; n++) {

  		if (led == drv_data->leds[n] && (force_update ||
  			(value != drv_data->led_state[n] ||
  			drv_data->led_delay_on[n] ||
  			drv_data->led_delay_off[n]))) {
  
  			drv_data->led_state[n] = value;
  
  			/* Setting the brightness stops the blinking */
  			drv_data->led_delay_on[n] = 0;
  			drv_data->led_delay_off[n] = 0;

  			sony_set_leds(drv_data);

  			break;
  		}
  	}
  }

  static enum led_brightness sony_led_get_brightness(struct led_classdev *led)

  {
  	struct device *dev = led->dev->parent;

  	struct hid_device *hdev = to_hid_device(dev);

  	struct sony_sc *drv_data;

  
  	int n;

  
  	drv_data = hid_get_drvdata(hdev);

  	if (!drv_data) {

  		hid_err(hdev, "No device data
  ");
  		return LED_OFF;
  	}

  	for (n = 0; n < drv_data->led_count; n++) {

  		if (led == drv_data->leds[n])
  			return drv_data->led_state[n];

  	}

  	return LED_OFF;

  }

  static int sony_led_blink_set(struct led_classdev *led, unsigned long *delay_on,
  				unsigned long *delay_off)
  {
  	struct device *dev = led->dev->parent;

  	struct hid_device *hdev = to_hid_device(dev);

  	struct sony_sc *drv_data = hid_get_drvdata(hdev);
  	int n;

  	u8 new_on, new_off;

  
  	if (!drv_data) {
  		hid_err(hdev, "No device data
  ");
  		return -EINVAL;
  	}
  
  	/* Max delay is 255 deciseconds or 2550 milliseconds */
  	if (*delay_on > 2550)
  		*delay_on = 2550;
  	if (*delay_off > 2550)
  		*delay_off = 2550;
  
  	/* Blink at 1 Hz if both values are zero */
  	if (!*delay_on && !*delay_off)
  		*delay_on = *delay_off = 500;
  
  	new_on = *delay_on / 10;
  	new_off = *delay_off / 10;
  
  	for (n = 0; n < drv_data->led_count; n++) {
  		if (led == drv_data->leds[n])
  			break;
  	}
  
  	/* This LED is not registered on this device */
  	if (n >= drv_data->led_count)
  		return -EINVAL;
  
  	/* Don't schedule work if the values didn't change */
  	if (new_on != drv_data->led_delay_on[n] ||
  		new_off != drv_data->led_delay_off[n]) {
  		drv_data->led_delay_on[n] = new_on;
  		drv_data->led_delay_off[n] = new_off;
  		schedule_work(&drv_data->state_worker);
  	}
  
  	return 0;
  }

  static void sony_leds_remove(struct sony_sc *sc)

  {

  	struct led_classdev *led;
  	int n;

  	BUG_ON(!(sc->quirks & SONY_LED_SUPPORT));

  	for (n = 0; n < sc->led_count; n++) {
  		led = sc->leds[n];
  		sc->leds[n] = NULL;

  		if (!led)
  			continue;
  		led_classdev_unregister(led);
  		kfree(led);
  	}

  	sc->led_count = 0;

  }

  static int sony_leds_init(struct sony_sc *sc)

  {

  	struct hid_device *hdev = sc->hdev;

  	int n, ret = 0;

  	int use_ds4_names;

  	struct led_classdev *led;
  	size_t name_sz;
  	char *name;

  	size_t name_len;
  	const char *name_fmt;

  	static const char * const ds4_name_str[] = { "red", "green", "blue",
  						  "global" };

  	u8 max_brightness[MAX_LEDS] = { [0 ... (MAX_LEDS - 1)] = 1 };
  	u8 use_hw_blink[MAX_LEDS] = { 0 };

  	BUG_ON(!(sc->quirks & SONY_LED_SUPPORT));

  	if (sc->quirks & BUZZ_CONTROLLER) {
  		sc->led_count = 4;

  		use_ds4_names = 0;

  		name_len = strlen("::buzz#");
  		name_fmt = "%s::buzz%d";
  		/* Validate expected report characteristics. */
  		if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 7))
  			return -ENODEV;

  	} else if (sc->quirks & DUALSHOCK4_CONTROLLER) {

  		dualshock4_set_leds_from_id(sc);
  		sc->led_state[3] = 1;

  		sc->led_count = 4;
  		memset(max_brightness, 255, 3);
  		use_hw_blink[3] = 1;
  		use_ds4_names = 1;

  		name_len = 0;
  		name_fmt = "%s:%s";

  	} else if (sc->quirks & MOTION_CONTROLLER) {
  		sc->led_count = 3;
  		memset(max_brightness, 255, 3);
  		use_ds4_names = 1;
  		name_len = 0;
  		name_fmt = "%s:%s";

  	} else if (sc->quirks & NAVIGATION_CONTROLLER) {

  		static const u8 navigation_leds[4] = {0x01, 0x00, 0x00, 0x00};

  
  		memcpy(sc->led_state, navigation_leds, sizeof(navigation_leds));
  		sc->led_count = 1;
  		memset(use_hw_blink, 1, 4);
  		use_ds4_names = 0;
  		name_len = strlen("::sony#");
  		name_fmt = "%s::sony%d";

  	} else {

  		sixaxis_set_leds_from_id(sc);

  		sc->led_count = 4;

  		memset(use_hw_blink, 1, 4);
  		use_ds4_names = 0;

  		name_len = strlen("::sony#");
  		name_fmt = "%s::sony%d";

  	}

  	/*
  	 * Clear LEDs as we have no way of reading their initial state. This is

  	 * only relevant if the driver is loaded after somebody actively set the

  	 * LEDs to on
  	 */

  	sony_set_leds(sc);

  	name_sz = strlen(dev_name(&hdev->dev)) + name_len + 1;

  	for (n = 0; n < sc->led_count; n++) {

  		if (use_ds4_names)
  			name_sz = strlen(dev_name(&hdev->dev)) + strlen(ds4_name_str[n]) + 2;

  		led = kzalloc(sizeof(struct led_classdev) + name_sz, GFP_KERNEL);
  		if (!led) {
  			hid_err(hdev, "Couldn't allocate memory for LED %d
  ", n);

  			ret = -ENOMEM;

  			goto error_leds;
  		}

  		name = (void *)(&led[1]);

  		if (use_ds4_names)
  			snprintf(name, name_sz, name_fmt, dev_name(&hdev->dev),
  			ds4_name_str[n]);

  		else
  			snprintf(name, name_sz, name_fmt, dev_name(&hdev->dev), n + 1);

  		led->name = name;

  		led->brightness = sc->led_state[n];

  		led->max_brightness = max_brightness[n];

  		led->brightness_get = sony_led_get_brightness;
  		led->brightness_set = sony_led_set_brightness;

  		if (use_hw_blink[n])
  			led->blink_set = sony_led_blink_set;

  		sc->leds[n] = led;

  		ret = led_classdev_register(&hdev->dev, led);
  		if (ret) {

  			hid_err(hdev, "Failed to register LED %d
  ", n);

  			sc->leds[n] = NULL;

  			kfree(led);
  			goto error_leds;

  		}
  	}

  
  	return ret;

  error_leds:

  	sony_leds_remove(sc);

  	return ret;

  }

  static void sixaxis_send_output_report(struct sony_sc *sc)

  {

  	static const union sixaxis_output_report_01 default_report = {

  		.buf = {
  			0x01,

  			0x01, 0xff, 0x00, 0xff, 0x00,

  			0x00, 0x00, 0x00, 0x00, 0x00,
  			0xff, 0x27, 0x10, 0x00, 0x32,
  			0xff, 0x27, 0x10, 0x00, 0x32,
  			0xff, 0x27, 0x10, 0x00, 0x32,
  			0xff, 0x27, 0x10, 0x00, 0x32,
  			0x00, 0x00, 0x00, 0x00, 0x00
  		}

  	};

  	struct sixaxis_output_report *report =
  		(struct sixaxis_output_report *)sc->output_report_dmabuf;
  	int n;
  
  	/* Initialize the report with default values */
  	memcpy(report, &default_report, sizeof(struct sixaxis_output_report));

  #ifdef CONFIG_SONY_FF

  	report->rumble.right_motor_on = sc->right ? 1 : 0;
  	report->rumble.left_motor_force = sc->left;

  #endif

  	report->leds_bitmap |= sc->led_state[0] << 1;
  	report->leds_bitmap |= sc->led_state[1] << 2;
  	report->leds_bitmap |= sc->led_state[2] << 3;
  	report->leds_bitmap |= sc->led_state[3] << 4;

  	/* Set flag for all leds off, required for 3rd party INTEC controller */

  	if ((report->leds_bitmap & 0x1E) == 0)
  		report->leds_bitmap |= 0x20;

  	/*
  	 * The LEDs in the report are indexed in reverse order to their
  	 * corresponding light on the controller.
  	 * Index 0 = LED 4, index 1 = LED 3, etc...
  	 *
  	 * In the case of both delay values being zero (blinking disabled) the
  	 * default report values should be used or the controller LED will be
  	 * always off.
  	 */
  	for (n = 0; n < 4; n++) {
  		if (sc->led_delay_on[n] || sc->led_delay_off[n]) {

  			report->led[3 - n].duty_off = sc->led_delay_off[n];
  			report->led[3 - n].duty_on = sc->led_delay_on[n];

  		}
  	}

  	hid_hw_raw_request(sc->hdev, report->report_id, (u8 *)report,

  			sizeof(struct sixaxis_output_report),
  			HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);

  }

  static void dualshock4_send_output_report(struct sony_sc *sc)

  {

  	struct hid_device *hdev = sc->hdev;

  	u8 *buf = sc->output_report_dmabuf;

  	int offset;

  	if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {

  		memset(buf, 0, DS4_REPORT_0x05_SIZE);

  		buf[0] = 0x05;

  		buf[1] = 0xFF;

  		offset = 4;
  	} else {

  		memset(buf, 0, DS4_REPORT_0x11_SIZE);

  		buf[0] = 0x11;

  		buf[1] = 0x80;

  		buf[3] = 0x0F;
  		offset = 6;
  	}

  
  #ifdef CONFIG_SONY_FF

  	buf[offset++] = sc->right;
  	buf[offset++] = sc->left;
  #else
  	offset += 2;

  #endif

  	/* LED 3 is the global control */
  	if (sc->led_state[3]) {
  		buf[offset++] = sc->led_state[0];
  		buf[offset++] = sc->led_state[1];
  		buf[offset++] = sc->led_state[2];
  	} else {
  		offset += 3;
  	}
  
  	/* If both delay values are zero the DualShock 4 disables blinking. */
  	buf[offset++] = sc->led_delay_on[3];
  	buf[offset++] = sc->led_delay_off[3];

  	if (sc->quirks & DUALSHOCK4_CONTROLLER_USB)

  		hid_hw_output_report(hdev, buf, DS4_REPORT_0x05_SIZE);

  	else

  		hid_hw_raw_request(hdev, 0x11, buf, DS4_REPORT_0x11_SIZE,

  				HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);

  }

  static void motion_send_output_report(struct sony_sc *sc)

  {

  	struct hid_device *hdev = sc->hdev;
  	struct motion_output_report_02 *report =
  		(struct motion_output_report_02 *)sc->output_report_dmabuf;

  	memset(report, 0, MOTION_REPORT_0x02_SIZE);

  
  	report->type = 0x02; /* set leds */
  	report->r = sc->led_state[0];
  	report->g = sc->led_state[1];
  	report->b = sc->led_state[2];
  
  #ifdef CONFIG_SONY_FF
  	report->rumble = max(sc->right, sc->left);
  #endif

  	hid_hw_output_report(hdev, (u8 *)report, MOTION_REPORT_0x02_SIZE);

  }

  static inline void sony_send_output_report(struct sony_sc *sc)
  {
  	if (sc->send_output_report)
  		sc->send_output_report(sc);
  }

  static void sony_state_worker(struct work_struct *work)
  {
  	struct sony_sc *sc = container_of(work, struct sony_sc, state_worker);

  	sc->send_output_report(sc);
  }

  static int sony_allocate_output_report(struct sony_sc *sc)
  {

  	if ((sc->quirks & SIXAXIS_CONTROLLER) ||
  			(sc->quirks & NAVIGATION_CONTROLLER))

  		sc->output_report_dmabuf =
  			kmalloc(sizeof(union sixaxis_output_report_01),
  				GFP_KERNEL);
  	else if (sc->quirks & DUALSHOCK4_CONTROLLER_BT)
  		sc->output_report_dmabuf = kmalloc(DS4_REPORT_0x11_SIZE,
  						GFP_KERNEL);
  	else if (sc->quirks & DUALSHOCK4_CONTROLLER_USB)
  		sc->output_report_dmabuf = kmalloc(DS4_REPORT_0x05_SIZE,
  						GFP_KERNEL);

  	else if (sc->quirks & MOTION_CONTROLLER)

  		sc->output_report_dmabuf = kmalloc(MOTION_REPORT_0x02_SIZE,
  						GFP_KERNEL);

  	else
  		return 0;
  
  	if (!sc->output_report_dmabuf)
  		return -ENOMEM;
  
  	return 0;
  }

  #ifdef CONFIG_SONY_FF

  static int sony_play_effect(struct input_dev *dev, void *data,
  			    struct ff_effect *effect)
  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	struct sony_sc *sc = hid_get_drvdata(hid);

  
  	if (effect->type != FF_RUMBLE)
  		return 0;

  	sc->left = effect->u.rumble.strong_magnitude / 256;

  	sc->right = effect->u.rumble.weak_magnitude / 256;

  	schedule_work(&sc->state_worker);

  	return 0;

  }

  static int sony_init_ff(struct sony_sc *sc)

  {

  	struct hid_input *hidinput = list_entry(sc->hdev->inputs.next,

  						struct hid_input, list);
  	struct input_dev *input_dev = hidinput->input;
  
  	input_set_capability(input_dev, EV_FF, FF_RUMBLE);
  	return input_ff_create_memless(input_dev, NULL, sony_play_effect);
  }
  
  #else

  static int sony_init_ff(struct sony_sc *sc)

  {
  	return 0;
  }

  #endif

  static int sony_battery_get_property(struct power_supply *psy,
  				     enum power_supply_property psp,
  				     union power_supply_propval *val)
  {

  	struct sony_sc *sc = power_supply_get_drvdata(psy);

  	unsigned long flags;
  	int ret = 0;
  	u8 battery_charging, battery_capacity, cable_state;
  
  	spin_lock_irqsave(&sc->lock, flags);
  	battery_charging = sc->battery_charging;
  	battery_capacity = sc->battery_capacity;
  	cable_state = sc->cable_state;
  	spin_unlock_irqrestore(&sc->lock, flags);
  
  	switch (psp) {
  	case POWER_SUPPLY_PROP_PRESENT:
  		val->intval = 1;
  		break;
  	case POWER_SUPPLY_PROP_SCOPE:
  		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
  		break;
  	case POWER_SUPPLY_PROP_CAPACITY:
  		val->intval = battery_capacity;
  		break;
  	case POWER_SUPPLY_PROP_STATUS:
  		if (battery_charging)
  			val->intval = POWER_SUPPLY_STATUS_CHARGING;
  		else
  			if (battery_capacity == 100 && cable_state)
  				val->intval = POWER_SUPPLY_STATUS_FULL;
  			else
  				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
  		break;
  	default:
  		ret = -EINVAL;
  		break;
  	}
  	return ret;

  }

  static int sony_battery_probe(struct sony_sc *sc)

  {

  	struct power_supply_config psy_cfg = { .drv_data = sc, };

  	struct hid_device *hdev = sc->hdev;

  	int ret;

  	/*
  	 * Set the default battery level to 100% to avoid low battery warnings

  	 * if the battery is polled before the first device report is received.
  	 */
  	sc->battery_capacity = 100;

  	sc->battery_desc.properties = sony_battery_props;
  	sc->battery_desc.num_properties = ARRAY_SIZE(sony_battery_props);
  	sc->battery_desc.get_property = sony_battery_get_property;
  	sc->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
  	sc->battery_desc.use_for_apm = 0;
  	sc->battery_desc.name = kasprintf(GFP_KERNEL,
  					  "sony_controller_battery_%pMR",
  					  sc->mac_address);
  	if (!sc->battery_desc.name)

  		return -ENOMEM;

  	sc->battery = power_supply_register(&hdev->dev, &sc->battery_desc,
  					    &psy_cfg);
  	if (IS_ERR(sc->battery)) {
  		ret = PTR_ERR(sc->battery);

  		hid_err(hdev, "Unable to register battery device
  ");
  		goto err_free;
  	}

  	power_supply_powers(sc->battery, &hdev->dev);

  	return 0;

  
  err_free:

  	kfree(sc->battery_desc.name);
  	sc->battery_desc.name = NULL;

  	return ret;

  }

  static void sony_battery_remove(struct sony_sc *sc)

  {

  	if (!sc->battery_desc.name)

  		return;

  	power_supply_unregister(sc->battery);
  	kfree(sc->battery_desc.name);
  	sc->battery_desc.name = NULL;

  }

  /*
   * If a controller is plugged in via USB while already connected via Bluetooth
   * it will show up as two devices. A global list of connected controllers and
   * their MAC addresses is maintained to ensure that a device is only connected
   * once.
   */
  static int sony_check_add_dev_list(struct sony_sc *sc)
  {
  	struct sony_sc *entry;
  	unsigned long flags;
  	int ret;
  
  	spin_lock_irqsave(&sony_dev_list_lock, flags);
  
  	list_for_each_entry(entry, &sony_device_list, list_node) {
  		ret = memcmp(sc->mac_address, entry->mac_address,
  				sizeof(sc->mac_address));
  		if (!ret) {
  			ret = -EEXIST;
  			hid_info(sc->hdev, "controller with MAC address %pMR already connected
  ",
  				sc->mac_address);
  			goto unlock;

  		}
  	}

  	ret = 0;
  	list_add(&(sc->list_node), &sony_device_list);

  unlock:
  	spin_unlock_irqrestore(&sony_dev_list_lock, flags);
  	return ret;
  }
  
  static void sony_remove_dev_list(struct sony_sc *sc)
  {
  	unsigned long flags;

  	if (sc->list_node.next) {
  		spin_lock_irqsave(&sony_dev_list_lock, flags);
  		list_del(&(sc->list_node));
  		spin_unlock_irqrestore(&sony_dev_list_lock, flags);
  	}

  }

  static int sony_get_bt_devaddr(struct sony_sc *sc)
  {
  	int ret;
  
  	/* HIDP stores the device MAC address as a string in the uniq field. */
  	ret = strlen(sc->hdev->uniq);
  	if (ret != 17)
  		return -EINVAL;
  
  	ret = sscanf(sc->hdev->uniq,
  		"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
  		&sc->mac_address[5], &sc->mac_address[4], &sc->mac_address[3],
  		&sc->mac_address[2], &sc->mac_address[1], &sc->mac_address[0]);
  
  	if (ret != 6)
  		return -EINVAL;
  
  	return 0;
  }
  
  static int sony_check_add(struct sony_sc *sc)
  {

  	u8 *buf = NULL;

  	int n, ret;
  
  	if ((sc->quirks & DUALSHOCK4_CONTROLLER_BT) ||

  	    (sc->quirks & MOTION_CONTROLLER_BT) ||

  	    (sc->quirks & NAVIGATION_CONTROLLER_BT) ||

  	    (sc->quirks & SIXAXIS_CONTROLLER_BT)) {
  		/*
  		 * sony_get_bt_devaddr() attempts to parse the Bluetooth MAC
  		 * address from the uniq string where HIDP stores it.
  		 * As uniq cannot be guaranteed to be a MAC address in all cases
  		 * a failure of this function should not prevent the connection.
  		 */
  		if (sony_get_bt_devaddr(sc) < 0) {
  			hid_warn(sc->hdev, "UNIQ does not contain a MAC address; duplicate check skipped
  ");
  			return 0;
  		}
  	} else if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {

  		buf = kmalloc(DS4_REPORT_0x81_SIZE, GFP_KERNEL);
  		if (!buf)
  			return -ENOMEM;

  
  		/*
  		 * The MAC address of a DS4 controller connected via USB can be
  		 * retrieved with feature report 0x81. The address begins at
  		 * offset 1.
  		 */

  		ret = hid_hw_raw_request(sc->hdev, 0x81, buf,
  				DS4_REPORT_0x81_SIZE, HID_FEATURE_REPORT,
  				HID_REQ_GET_REPORT);

  		if (ret != DS4_REPORT_0x81_SIZE) {

  			hid_err(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address
  ");

  			ret = ret < 0 ? ret : -EINVAL;
  			goto out_free;

  		}
  
  		memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));

  	} else if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
  			(sc->quirks & NAVIGATION_CONTROLLER_USB)) {

  		buf = kmalloc(SIXAXIS_REPORT_0xF2_SIZE, GFP_KERNEL);
  		if (!buf)
  			return -ENOMEM;

  
  		/*
  		 * The MAC address of a Sixaxis controller connected via USB can
  		 * be retrieved with feature report 0xf2. The address begins at
  		 * offset 4.
  		 */

  		ret = hid_hw_raw_request(sc->hdev, 0xf2, buf,
  				SIXAXIS_REPORT_0xF2_SIZE, HID_FEATURE_REPORT,
  				HID_REQ_GET_REPORT);

  		if (ret != SIXAXIS_REPORT_0xF2_SIZE) {

  			hid_err(sc->hdev, "failed to retrieve feature report 0xf2 with the Sixaxis MAC address
  ");

  			ret = ret < 0 ? ret : -EINVAL;
  			goto out_free;

  		}
  
  		/*
  		 * The Sixaxis device MAC in the report is big-endian and must
  		 * be byte-swapped.
  		 */
  		for (n = 0; n < 6; n++)
  			sc->mac_address[5-n] = buf[4+n];
  	} else {
  		return 0;
  	}

  	ret = sony_check_add_dev_list(sc);
  
  out_free:
  
  	kfree(buf);
  
  	return ret;

  }

  static int sony_set_device_id(struct sony_sc *sc)
  {
  	int ret;
  
  	/*
  	 * Only DualShock 4 or Sixaxis controllers get an id.
  	 * All others are set to -1.
  	 */
  	if ((sc->quirks & SIXAXIS_CONTROLLER) ||
  	    (sc->quirks & DUALSHOCK4_CONTROLLER)) {
  		ret = ida_simple_get(&sony_device_id_allocator, 0, 0,
  					GFP_KERNEL);
  		if (ret < 0) {
  			sc->device_id = -1;
  			return ret;
  		}
  		sc->device_id = ret;
  	} else {
  		sc->device_id = -1;
  	}
  
  	return 0;
  }
  
  static void sony_release_device_id(struct sony_sc *sc)
  {
  	if (sc->device_id >= 0) {
  		ida_simple_remove(&sony_device_id_allocator, sc->device_id);
  		sc->device_id = -1;
  	}
  }

  static inline void sony_init_output_report(struct sony_sc *sc,

  				void (*send_output_report)(struct sony_sc *))

  {

  	sc->send_output_report = send_output_report;

  	if (!sc->worker_initialized)

  		INIT_WORK(&sc->state_worker, sony_state_worker);

  
  	sc->worker_initialized = 1;
  }
  
  static inline void sony_cancel_work_sync(struct sony_sc *sc)
  {
  	if (sc->worker_initialized)
  		cancel_work_sync(&sc->state_worker);
  }

  static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
  {
  	int ret;

  	unsigned long quirks = id->driver_data;
  	struct sony_sc *sc;

  	unsigned int connect_mask = HID_CONNECT_DEFAULT;

  	sc = devm_kzalloc(&hdev->dev, sizeof(*sc), GFP_KERNEL);

  	if (sc == NULL) {

  		hid_err(hdev, "can't alloc sony descriptor
  ");

  		return -ENOMEM;
  	}

  	spin_lock_init(&sc->lock);

  	sc->quirks = quirks;
  	hid_set_drvdata(hdev, sc);

  	sc->hdev = hdev;

  	ret = hid_parse(hdev);
  	if (ret) {

  		hid_err(hdev, "parse failed
  ");

  		return ret;

  	}

  	if (sc->quirks & VAIO_RDESC_CONSTANT)
  		connect_mask |= HID_CONNECT_HIDDEV_FORCE;

  	else if (sc->quirks & SIXAXIS_CONTROLLER)

  		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
  
  	ret = hid_hw_start(hdev, connect_mask);

  	if (ret) {

  		hid_err(hdev, "hw start failed
  ");

  		return ret;

  	}

  	ret = sony_set_device_id(sc);

  	if (ret < 0) {

  		hid_err(hdev, "failed to allocate the device id
  ");

  		goto err_stop;
  	}

  	ret = sony_allocate_output_report(sc);

  	if (ret < 0) {

  		hid_err(hdev, "failed to allocate the output report buffer
  ");

  		goto err_stop;
  	}

  	if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
  			(sc->quirks & NAVIGATION_CONTROLLER_USB)) {

  		/*
  		 * The Sony Sixaxis does not handle HID Output Reports on the
  		 * Interrupt EP like it could, so we need to force HID Output
  		 * Reports to use HID_REQ_SET_REPORT on the Control EP.
  		 *
  		 * There is also another issue about HID Output Reports via USB,
  		 * the Sixaxis does not want the report_id as part of the data
  		 * packet, so we have to discard buf[0] when sending the actual
  		 * control message, even for numbered reports, humpf!
  		 */
  		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
  		hdev->quirks |= HID_QUIRK_SKIP_OUTPUT_REPORT_ID;

  		ret = sixaxis_set_operational_usb(hdev);

  		sony_init_output_report(sc, sixaxis_send_output_report);

  	} else if ((sc->quirks & SIXAXIS_CONTROLLER_BT) ||
  			(sc->quirks & NAVIGATION_CONTROLLER_BT)) {

  		/*
  		 * The Sixaxis wants output reports sent on the ctrl endpoint
  		 * when connected via Bluetooth.
  		 */
  		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;

  		ret = sixaxis_set_operational_bt(hdev);

  		sony_init_output_report(sc, sixaxis_send_output_report);

  	} else if (sc->quirks & DUALSHOCK4_CONTROLLER) {

  		if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {

  			/*
  			 * The DualShock 4 wants output reports sent on the ctrl
  			 * endpoint when connected via Bluetooth.
  			 */
  			hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;

  			ret = dualshock4_set_operational_bt(hdev);
  			if (ret < 0) {
  				hid_err(hdev, "failed to set the Dualshock 4 operational mode
  ");
  				goto err_stop;
  			}
  		}

  		sony_init_output_report(sc, dualshock4_send_output_report);

  	} else if (sc->quirks & MOTION_CONTROLLER) {

  		sony_init_output_report(sc, motion_send_output_report);

  	} else {
  		ret = 0;
  	}

  	if (ret < 0)

  		goto err_stop;

  	ret = sony_check_add(sc);
  	if (ret < 0)
  		goto err_stop;

  	if (sc->quirks & SONY_LED_SUPPORT) {

  		ret = sony_leds_init(sc);

  		if (ret < 0)
  			goto err_stop;
  	}

  	if (sc->quirks & SONY_BATTERY_SUPPORT) {
  		ret = sony_battery_probe(sc);
  		if (ret < 0)
  			goto err_stop;
  
  		/* Open the device to receive reports with battery info */
  		ret = hid_hw_open(hdev);
  		if (ret < 0) {
  			hid_err(hdev, "hw open failed
  ");
  			goto err_stop;
  		}
  	}

  	if (sc->quirks & SONY_FF_SUPPORT) {

  		ret = sony_init_ff(sc);

  		if (ret < 0)
  			goto err_close;

  	}

  	return 0;

  err_close:
  	hid_hw_close(hdev);

  err_stop:

  	if (sc->quirks & SONY_LED_SUPPORT)

  		sony_leds_remove(sc);

  	if (sc->quirks & SONY_BATTERY_SUPPORT)
  		sony_battery_remove(sc);

  	sony_cancel_work_sync(sc);