drivers/hid/hid-logitech-dj.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  HID driver for Logitech receivers
   4  *
   5  *  Copyright (c) 2011 Logitech
   6  */
   7
   8
   9
  10 #include <linux/device.h>
  11 #include <linux/hid.h>
  12 #include <linux/module.h>
  13 #include <linux/kfifo.h>
  14 #include <linux/delay.h>
  15 #include <linux/usb.h> /* For to_usb_interface for kvm extra intf check */
  16 #include <asm/unaligned.h>
  17 #include "hid-ids.h"
  18
  19 #define DJ_MAX_PAIRED_DEVICES                   7
  20 #define DJ_MAX_NUMBER_NOTIFS                    8
  21 #define DJ_RECEIVER_INDEX                       0
  22 #define DJ_DEVICE_INDEX_MIN                     1
  23 #define DJ_DEVICE_INDEX_MAX                     7
  24
  25 #define DJREPORT_SHORT_LENGTH                   15
  26 #define DJREPORT_LONG_LENGTH                    32
  27
  28 #define REPORT_ID_DJ_SHORT                      0x20
  29 #define REPORT_ID_DJ_LONG                       0x21
  30
  31 #define REPORT_ID_HIDPP_SHORT                   0x10
  32 #define REPORT_ID_HIDPP_LONG                    0x11
  33 #define REPORT_ID_HIDPP_VERY_LONG               0x12
  34
  35 #define HIDPP_REPORT_SHORT_LENGTH               7
  36 #define HIDPP_REPORT_LONG_LENGTH                20
  37
  38 #define HIDPP_RECEIVER_INDEX                    0xff
  39
  40 #define REPORT_TYPE_RFREPORT_FIRST              0x01
  41 #define REPORT_TYPE_RFREPORT_LAST               0x1F
  42
  43 /* Command Switch to DJ mode */
  44 #define REPORT_TYPE_CMD_SWITCH                  0x80
  45 #define CMD_SWITCH_PARAM_DEVBITFIELD            0x00
  46 #define CMD_SWITCH_PARAM_TIMEOUT_SECONDS        0x01
  47 #define TIMEOUT_NO_KEEPALIVE                    0x00
  48
  49 /* Command to Get the list of Paired devices */
  50 #define REPORT_TYPE_CMD_GET_PAIRED_DEVICES      0x81
  51
  52 /* Device Paired Notification */
  53 #define REPORT_TYPE_NOTIF_DEVICE_PAIRED         0x41
  54 #define SPFUNCTION_MORE_NOTIF_EXPECTED          0x01
  55 #define SPFUNCTION_DEVICE_LIST_EMPTY            0x02
  56 #define DEVICE_PAIRED_PARAM_SPFUNCTION          0x00
  57 #define DEVICE_PAIRED_PARAM_EQUAD_ID_LSB        0x01
  58 #define DEVICE_PAIRED_PARAM_EQUAD_ID_MSB        0x02
  59 #define DEVICE_PAIRED_RF_REPORT_TYPE            0x03
  60
  61 /* Device Un-Paired Notification */
  62 #define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED       0x40
  63
  64 /* Connection Status Notification */
  65 #define REPORT_TYPE_NOTIF_CONNECTION_STATUS     0x42
  66 #define CONNECTION_STATUS_PARAM_STATUS          0x00
  67 #define STATUS_LINKLOSS                         0x01
  68
  69 /* Error Notification */
  70 #define REPORT_TYPE_NOTIF_ERROR                 0x7F
  71 #define NOTIF_ERROR_PARAM_ETYPE                 0x00
  72 #define ETYPE_KEEPALIVE_TIMEOUT                 0x01
  73
  74 /* supported DJ HID && RF report types */
  75 #define REPORT_TYPE_KEYBOARD                    0x01
  76 #define REPORT_TYPE_MOUSE                       0x02
  77 #define REPORT_TYPE_CONSUMER_CONTROL            0x03
  78 #define REPORT_TYPE_SYSTEM_CONTROL              0x04
  79 #define REPORT_TYPE_MEDIA_CENTER                0x08
  80 #define REPORT_TYPE_LEDS                        0x0E
  81
  82 /* RF Report types bitfield */
  83 #define STD_KEYBOARD                            BIT(1)
  84 #define STD_MOUSE                               BIT(2)
  85 #define MULTIMEDIA                              BIT(3)
  86 #define POWER_KEYS                              BIT(4)
  87 #define KBD_MOUSE                               BIT(5)
  88 #define MEDIA_CENTER                            BIT(8)
  89 #define KBD_LEDS                                BIT(14)
  90 /* Fake (bitnr > NUMBER_OF_HID_REPORTS) bit to track HID++ capability */
  91 #define HIDPP                                   BIT_ULL(63)
  92
  93 /* HID++ Device Connected Notification */
  94 #define REPORT_TYPE_NOTIF_DEVICE_CONNECTED      0x41
  95 #define HIDPP_PARAM_PROTO_TYPE                  0x00
  96 #define HIDPP_PARAM_DEVICE_INFO                 0x01
  97 #define HIDPP_PARAM_EQUAD_LSB                   0x02
  98 #define HIDPP_PARAM_EQUAD_MSB                   0x03
  99 #define HIDPP_PARAM_27MHZ_DEVID                 0x03
 100 #define HIDPP_DEVICE_TYPE_MASK                  GENMASK(3, 0)
 101 #define HIDPP_LINK_STATUS_MASK                  BIT(6)
 102 #define HIDPP_MANUFACTURER_MASK                 BIT(7)
 103 #define HIDPP_27MHZ_SECURE_MASK                 BIT(7)
 104
 105 #define HIDPP_DEVICE_TYPE_KEYBOARD              1
 106 #define HIDPP_DEVICE_TYPE_MOUSE                 2
 107
 108 #define HIDPP_SET_REGISTER                      0x80
 109 #define HIDPP_GET_LONG_REGISTER                 0x83
 110 #define HIDPP_REG_CONNECTION_STATE              0x02
 111 #define HIDPP_REG_PAIRING_INFORMATION           0xB5
 112 #define HIDPP_PAIRING_INFORMATION               0x20
 113 #define HIDPP_FAKE_DEVICE_ARRIVAL               0x02
 114
 115 enum recvr_type {
 116         recvr_type_dj,
 117         recvr_type_hidpp,
 118         recvr_type_gaming_hidpp,
 119         recvr_type_mouse_only,
 120         recvr_type_27mhz,
 121         recvr_type_bluetooth,
 122         recvr_type_dinovo,
 123 };
 124
 125 struct dj_report {
 126         u8 report_id;
 127         u8 device_index;
 128         u8 report_type;
 129         u8 report_params[DJREPORT_SHORT_LENGTH - 3];
 130 };
 131
 132 struct hidpp_event {
 133         u8 report_id;
 134         u8 device_index;
 135         u8 sub_id;
 136         u8 params[HIDPP_REPORT_LONG_LENGTH - 3U];
 137 } __packed;
 138
 139 struct dj_receiver_dev {
 140         struct hid_device *mouse;
 141         struct hid_device *keyboard;
 142         struct hid_device *hidpp;
 143         struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES +
 144                                             DJ_DEVICE_INDEX_MIN];
 145         struct list_head list;
 146         struct kref kref;
 147         struct work_struct work;
 148         struct kfifo notif_fifo;
 149         unsigned long last_query; /* in jiffies */
 150         bool ready;
 151         enum recvr_type type;
 152         unsigned int unnumbered_application;
 153         spinlock_t lock;
 154 };
 155
 156 struct dj_device {
 157         struct hid_device *hdev;
 158         struct dj_receiver_dev *dj_receiver_dev;
 159         u64 reports_supported;
 160         u8 device_index;
 161 };
 162
 163 #define WORKITEM_TYPE_EMPTY     0
 164 #define WORKITEM_TYPE_PAIRED    1
 165 #define WORKITEM_TYPE_UNPAIRED  2
 166 #define WORKITEM_TYPE_UNKNOWN   255
 167
 168 struct dj_workitem {
 169         u8 type;                /* WORKITEM_TYPE_* */
 170         u8 device_index;
 171         u8 device_type;
 172         u8 quad_id_msb;
 173         u8 quad_id_lsb;
 174         u64 reports_supported;
 175 };
 176
 177 /* Keyboard descriptor (1) */
 178 static const char kbd_descriptor[] = {
 179         0x05, 0x01,             /* USAGE_PAGE (generic Desktop)     */
 180         0x09, 0x06,             /* USAGE (Keyboard)         */
 181         0xA1, 0x01,             /* COLLECTION (Application)     */
 182         0x85, 0x01,             /* REPORT_ID (1)            */
 183         0x95, 0x08,             /*   REPORT_COUNT (8)           */
 184         0x75, 0x01,             /*   REPORT_SIZE (1)            */
 185         0x15, 0x00,             /*   LOGICAL_MINIMUM (0)        */
 186         0x25, 0x01,             /*   LOGICAL_MAXIMUM (1)        */
 187         0x05, 0x07,             /*   USAGE_PAGE (Keyboard)      */
 188         0x19, 0xE0,             /*   USAGE_MINIMUM (Left Control)   */
 189         0x29, 0xE7,             /*   USAGE_MAXIMUM (Right GUI)      */
 190         0x81, 0x02,             /*   INPUT (Data,Var,Abs)       */
 191         0x95, 0x06,             /*   REPORT_COUNT (6)           */
 192         0x75, 0x08,             /*   REPORT_SIZE (8)            */
 193         0x15, 0x00,             /*   LOGICAL_MINIMUM (0)        */
 194         0x26, 0xFF, 0x00,       /*   LOGICAL_MAXIMUM (255)      */
 195         0x05, 0x07,             /*   USAGE_PAGE (Keyboard)      */
 196         0x19, 0x00,             /*   USAGE_MINIMUM (no event)       */
 197         0x2A, 0xFF, 0x00,       /*   USAGE_MAXIMUM (reserved)       */
 198         0x81, 0x00,             /*   INPUT (Data,Ary,Abs)       */
 199         0x85, 0x0e,             /* REPORT_ID (14)               */
 200         0x05, 0x08,             /*   USAGE PAGE (LED page)      */
 201         0x95, 0x05,             /*   REPORT COUNT (5)           */
 202         0x75, 0x01,             /*   REPORT SIZE (1)            */
 203         0x15, 0x00,             /*   LOGICAL_MINIMUM (0)        */
 204         0x25, 0x01,             /*   LOGICAL_MAXIMUM (1)        */
 205         0x19, 0x01,             /*   USAGE MINIMUM (1)          */
 206         0x29, 0x05,             /*   USAGE MAXIMUM (5)          */
 207         0x91, 0x02,             /*   OUTPUT (Data, Variable, Absolute)  */
 208         0x95, 0x01,             /*   REPORT COUNT (1)           */
 209         0x75, 0x03,             /*   REPORT SIZE (3)            */
 210         0x91, 0x01,             /*   OUTPUT (Constant)          */
 211         0xC0
 212 };
 213
 214 /* Mouse descriptor (2)     */
 215 static const char mse_descriptor[] = {
 216         0x05, 0x01,             /*  USAGE_PAGE (Generic Desktop)        */
 217         0x09, 0x02,             /*  USAGE (Mouse)                       */
 218         0xA1, 0x01,             /*  COLLECTION (Application)            */
 219         0x85, 0x02,             /*    REPORT_ID = 2                     */
 220         0x09, 0x01,             /*    USAGE (pointer)                   */
 221         0xA1, 0x00,             /*    COLLECTION (physical)             */
 222         0x05, 0x09,             /*      USAGE_PAGE (buttons)            */
 223         0x19, 0x01,             /*      USAGE_MIN (1)                   */
 224         0x29, 0x10,             /*      USAGE_MAX (16)                  */
 225         0x15, 0x00,             /*      LOGICAL_MIN (0)                 */
 226         0x25, 0x01,             /*      LOGICAL_MAX (1)                 */
 227         0x95, 0x10,             /*      REPORT_COUNT (16)               */
 228         0x75, 0x01,             /*      REPORT_SIZE (1)                 */
 229         0x81, 0x02,             /*      INPUT (data var abs)            */
 230         0x05, 0x01,             /*      USAGE_PAGE (generic desktop)    */
 231         0x16, 0x01, 0xF8,       /*      LOGICAL_MIN (-2047)             */
 232         0x26, 0xFF, 0x07,       /*      LOGICAL_MAX (2047)              */
 233         0x75, 0x0C,             /*      REPORT_SIZE (12)                */
 234         0x95, 0x02,             /*      REPORT_COUNT (2)                */
 235         0x09, 0x30,             /*      USAGE (X)                       */
 236         0x09, 0x31,             /*      USAGE (Y)                       */
 237         0x81, 0x06,             /*      INPUT                           */
 238         0x15, 0x81,             /*      LOGICAL_MIN (-127)              */
 239         0x25, 0x7F,             /*      LOGICAL_MAX (127)               */
 240         0x75, 0x08,             /*      REPORT_SIZE (8)                 */
 241         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 242         0x09, 0x38,             /*      USAGE (wheel)                   */
 243         0x81, 0x06,             /*      INPUT                           */
 244         0x05, 0x0C,             /*      USAGE_PAGE(consumer)            */
 245         0x0A, 0x38, 0x02,       /*      USAGE(AC Pan)                   */
 246         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 247         0x81, 0x06,             /*      INPUT                           */
 248         0xC0,                   /*    END_COLLECTION                    */
 249         0xC0,                   /*  END_COLLECTION                      */
 250 };
 251
 252 /* Mouse descriptor (2) for 27 MHz receiver, only 8 buttons */
 253 static const char mse_27mhz_descriptor[] = {
 254         0x05, 0x01,             /*  USAGE_PAGE (Generic Desktop)        */
 255         0x09, 0x02,             /*  USAGE (Mouse)                       */
 256         0xA1, 0x01,             /*  COLLECTION (Application)            */
 257         0x85, 0x02,             /*    REPORT_ID = 2                     */
 258         0x09, 0x01,             /*    USAGE (pointer)                   */
 259         0xA1, 0x00,             /*    COLLECTION (physical)             */
 260         0x05, 0x09,             /*      USAGE_PAGE (buttons)            */
 261         0x19, 0x01,             /*      USAGE_MIN (1)                   */
 262         0x29, 0x08,             /*      USAGE_MAX (8)                   */
 263         0x15, 0x00,             /*      LOGICAL_MIN (0)                 */
 264         0x25, 0x01,             /*      LOGICAL_MAX (1)                 */
 265         0x95, 0x08,             /*      REPORT_COUNT (8)                */
 266         0x75, 0x01,             /*      REPORT_SIZE (1)                 */
 267         0x81, 0x02,             /*      INPUT (data var abs)            */
 268         0x05, 0x01,             /*      USAGE_PAGE (generic desktop)    */
 269         0x16, 0x01, 0xF8,       /*      LOGICAL_MIN (-2047)             */
 270         0x26, 0xFF, 0x07,       /*      LOGICAL_MAX (2047)              */
 271         0x75, 0x0C,             /*      REPORT_SIZE (12)                */
 272         0x95, 0x02,             /*      REPORT_COUNT (2)                */
 273         0x09, 0x30,             /*      USAGE (X)                       */
 274         0x09, 0x31,             /*      USAGE (Y)                       */
 275         0x81, 0x06,             /*      INPUT                           */
 276         0x15, 0x81,             /*      LOGICAL_MIN (-127)              */
 277         0x25, 0x7F,             /*      LOGICAL_MAX (127)               */
 278         0x75, 0x08,             /*      REPORT_SIZE (8)                 */
 279         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 280         0x09, 0x38,             /*      USAGE (wheel)                   */
 281         0x81, 0x06,             /*      INPUT                           */
 282         0x05, 0x0C,             /*      USAGE_PAGE(consumer)            */
 283         0x0A, 0x38, 0x02,       /*      USAGE(AC Pan)                   */
 284         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 285         0x81, 0x06,             /*      INPUT                           */
 286         0xC0,                   /*    END_COLLECTION                    */
 287         0xC0,                   /*  END_COLLECTION                      */
 288 };
 289
 290 /* Mouse descriptor (2) for Bluetooth receiver, low-res hwheel, 12 buttons */
 291 static const char mse_bluetooth_descriptor[] = {
 292         0x05, 0x01,             /*  USAGE_PAGE (Generic Desktop)        */
 293         0x09, 0x02,             /*  USAGE (Mouse)                       */
 294         0xA1, 0x01,             /*  COLLECTION (Application)            */
 295         0x85, 0x02,             /*    REPORT_ID = 2                     */
 296         0x09, 0x01,             /*    USAGE (pointer)                   */
 297         0xA1, 0x00,             /*    COLLECTION (physical)             */
 298         0x05, 0x09,             /*      USAGE_PAGE (buttons)            */
 299         0x19, 0x01,             /*      USAGE_MIN (1)                   */
 300         0x29, 0x08,             /*      USAGE_MAX (8)                   */
 301         0x15, 0x00,             /*      LOGICAL_MIN (0)                 */
 302         0x25, 0x01,             /*      LOGICAL_MAX (1)                 */
 303         0x95, 0x08,             /*      REPORT_COUNT (8)                */
 304         0x75, 0x01,             /*      REPORT_SIZE (1)                 */
 305         0x81, 0x02,             /*      INPUT (data var abs)            */
 306         0x05, 0x01,             /*      USAGE_PAGE (generic desktop)    */
 307         0x16, 0x01, 0xF8,       /*      LOGICAL_MIN (-2047)             */
 308         0x26, 0xFF, 0x07,       /*      LOGICAL_MAX (2047)              */
 309         0x75, 0x0C,             /*      REPORT_SIZE (12)                */
 310         0x95, 0x02,             /*      REPORT_COUNT (2)                */
 311         0x09, 0x30,             /*      USAGE (X)                       */
 312         0x09, 0x31,             /*      USAGE (Y)                       */
 313         0x81, 0x06,             /*      INPUT                           */
 314         0x15, 0x81,             /*      LOGICAL_MIN (-127)              */
 315         0x25, 0x7F,             /*      LOGICAL_MAX (127)               */
 316         0x75, 0x08,             /*      REPORT_SIZE (8)                 */
 317         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 318         0x09, 0x38,             /*      USAGE (wheel)                   */
 319         0x81, 0x06,             /*      INPUT                           */
 320         0x05, 0x0C,             /*      USAGE_PAGE(consumer)            */
 321         0x0A, 0x38, 0x02,       /*      USAGE(AC Pan)                   */
 322         0x15, 0xF9,             /*      LOGICAL_MIN (-7)                */
 323         0x25, 0x07,             /*      LOGICAL_MAX (7)                 */
 324         0x75, 0x04,             /*      REPORT_SIZE (4)                 */
 325         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 326         0x81, 0x06,             /*      INPUT                           */
 327         0x05, 0x09,             /*      USAGE_PAGE (buttons)            */
 328         0x19, 0x09,             /*      USAGE_MIN (9)                   */
 329         0x29, 0x0C,             /*      USAGE_MAX (12)                  */
 330         0x15, 0x00,             /*      LOGICAL_MIN (0)                 */
 331         0x25, 0x01,             /*      LOGICAL_MAX (1)                 */
 332         0x75, 0x01,             /*      REPORT_SIZE (1)                 */
 333         0x95, 0x04,             /*      REPORT_COUNT (4)                */
 334         0x81, 0x02,             /*      INPUT (Data,Var,Abs)            */
 335         0xC0,                   /*    END_COLLECTION                    */
 336         0xC0,                   /*  END_COLLECTION                      */
 337 };
 338
 339 /* Mouse descriptor (5) for Bluetooth receiver, normal-res hwheel, 8 buttons */
 340 static const char mse5_bluetooth_descriptor[] = {
 341         0x05, 0x01,             /*  USAGE_PAGE (Generic Desktop)        */
 342         0x09, 0x02,             /*  Usage (Mouse)                       */
 343         0xa1, 0x01,             /*  Collection (Application)            */
 344         0x85, 0x05,             /*   Report ID (5)                      */
 345         0x09, 0x01,             /*   Usage (Pointer)                    */
 346         0xa1, 0x00,             /*   Collection (Physical)              */
 347         0x05, 0x09,             /*    Usage Page (Button)               */
 348         0x19, 0x01,             /*    Usage Minimum (1)                 */
 349         0x29, 0x08,             /*    Usage Maximum (8)                 */
 350         0x15, 0x00,             /*    Logical Minimum (0)               */
 351         0x25, 0x01,             /*    Logical Maximum (1)               */
 352         0x95, 0x08,             /*    Report Count (8)                  */
 353         0x75, 0x01,             /*    Report Size (1)                   */
 354         0x81, 0x02,             /*    Input (Data,Var,Abs)              */
 355         0x05, 0x01,             /*    Usage Page (Generic Desktop)      */
 356         0x16, 0x01, 0xf8,       /*    Logical Minimum (-2047)           */
 357         0x26, 0xff, 0x07,       /*    Logical Maximum (2047)            */
 358         0x75, 0x0c,             /*    Report Size (12)                  */
 359         0x95, 0x02,             /*    Report Count (2)                  */
 360         0x09, 0x30,             /*    Usage (X)                         */
 361         0x09, 0x31,             /*    Usage (Y)                         */
 362         0x81, 0x06,             /*    Input (Data,Var,Rel)              */
 363         0x15, 0x81,             /*    Logical Minimum (-127)            */
 364         0x25, 0x7f,             /*    Logical Maximum (127)             */
 365         0x75, 0x08,             /*    Report Size (8)                   */
 366         0x95, 0x01,             /*    Report Count (1)                  */
 367         0x09, 0x38,             /*    Usage (Wheel)                     */
 368         0x81, 0x06,             /*    Input (Data,Var,Rel)              */
 369         0x05, 0x0c,             /*    Usage Page (Consumer Devices)     */
 370         0x0a, 0x38, 0x02,       /*    Usage (AC Pan)                    */
 371         0x15, 0x81,             /*    Logical Minimum (-127)            */
 372         0x25, 0x7f,             /*    Logical Maximum (127)             */
 373         0x75, 0x08,             /*    Report Size (8)                   */
 374         0x95, 0x01,             /*    Report Count (1)                  */
 375         0x81, 0x06,             /*    Input (Data,Var,Rel)              */
 376         0xc0,                   /*   End Collection                     */
 377         0xc0,                   /*  End Collection                      */
 378 };
 379
 380 /* Gaming Mouse descriptor (2) */
 381 static const char mse_high_res_descriptor[] = {
 382         0x05, 0x01,             /*  USAGE_PAGE (Generic Desktop)        */
 383         0x09, 0x02,             /*  USAGE (Mouse)                       */
 384         0xA1, 0x01,             /*  COLLECTION (Application)            */
 385         0x85, 0x02,             /*    REPORT_ID = 2                     */
 386         0x09, 0x01,             /*    USAGE (pointer)                   */
 387         0xA1, 0x00,             /*    COLLECTION (physical)             */
 388         0x05, 0x09,             /*      USAGE_PAGE (buttons)            */
 389         0x19, 0x01,             /*      USAGE_MIN (1)                   */
 390         0x29, 0x10,             /*      USAGE_MAX (16)                  */
 391         0x15, 0x00,             /*      LOGICAL_MIN (0)                 */
 392         0x25, 0x01,             /*      LOGICAL_MAX (1)                 */
 393         0x95, 0x10,             /*      REPORT_COUNT (16)               */
 394         0x75, 0x01,             /*      REPORT_SIZE (1)                 */
 395         0x81, 0x02,             /*      INPUT (data var abs)            */
 396         0x05, 0x01,             /*      USAGE_PAGE (generic desktop)    */
 397         0x16, 0x01, 0x80,       /*      LOGICAL_MIN (-32767)            */
 398         0x26, 0xFF, 0x7F,       /*      LOGICAL_MAX (32767)             */
 399         0x75, 0x10,             /*      REPORT_SIZE (16)                */
 400         0x95, 0x02,             /*      REPORT_COUNT (2)                */
 401         0x09, 0x30,             /*      USAGE (X)                       */
 402         0x09, 0x31,             /*      USAGE (Y)                       */
 403         0x81, 0x06,             /*      INPUT                           */
 404         0x15, 0x81,             /*      LOGICAL_MIN (-127)              */
 405         0x25, 0x7F,             /*      LOGICAL_MAX (127)               */
 406         0x75, 0x08,             /*      REPORT_SIZE (8)                 */
 407         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 408         0x09, 0x38,             /*      USAGE (wheel)                   */
 409         0x81, 0x06,             /*      INPUT                           */
 410         0x05, 0x0C,             /*      USAGE_PAGE(consumer)            */
 411         0x0A, 0x38, 0x02,       /*      USAGE(AC Pan)                   */
 412         0x95, 0x01,             /*      REPORT_COUNT (1)                */
 413         0x81, 0x06,             /*      INPUT                           */
 414         0xC0,                   /*    END_COLLECTION                    */
 415         0xC0,                   /*  END_COLLECTION                      */
 416 };
 417
 418 /* Consumer Control descriptor (3) */
 419 static const char consumer_descriptor[] = {
 420         0x05, 0x0C,             /* USAGE_PAGE (Consumer Devices)       */
 421         0x09, 0x01,             /* USAGE (Consumer Control)            */
 422         0xA1, 0x01,             /* COLLECTION (Application)            */
 423         0x85, 0x03,             /* REPORT_ID = 3                       */
 424         0x75, 0x10,             /* REPORT_SIZE (16)                    */
 425         0x95, 0x02,             /* REPORT_COUNT (2)                    */
 426         0x15, 0x01,             /* LOGICAL_MIN (1)                     */
 427         0x26, 0xFF, 0x02,       /* LOGICAL_MAX (767)                   */
 428         0x19, 0x01,             /* USAGE_MIN (1)                       */
 429         0x2A, 0xFF, 0x02,       /* USAGE_MAX (767)                     */
 430         0x81, 0x00,             /* INPUT (Data Ary Abs)                */
 431         0xC0,                   /* END_COLLECTION                      */
 432 };                              /*                                     */
 433
 434 /* System control descriptor (4) */
 435 static const char syscontrol_descriptor[] = {
 436         0x05, 0x01,             /*   USAGE_PAGE (Generic Desktop)      */
 437         0x09, 0x80,             /*   USAGE (System Control)            */
 438         0xA1, 0x01,             /*   COLLECTION (Application)          */
 439         0x85, 0x04,             /*   REPORT_ID = 4                     */
 440         0x75, 0x02,             /*   REPORT_SIZE (2)                   */
 441         0x95, 0x01,             /*   REPORT_COUNT (1)                  */
 442         0x15, 0x01,             /*   LOGICAL_MIN (1)                   */
 443         0x25, 0x03,             /*   LOGICAL_MAX (3)                   */
 444         0x09, 0x82,             /*   USAGE (System Sleep)              */
 445         0x09, 0x81,             /*   USAGE (System Power Down)         */
 446         0x09, 0x83,             /*   USAGE (System Wake Up)            */
 447         0x81, 0x60,             /*   INPUT (Data Ary Abs NPrf Null)    */
 448         0x75, 0x06,             /*   REPORT_SIZE (6)                   */
 449         0x81, 0x03,             /*   INPUT (Cnst Var Abs)              */
 450         0xC0,                   /*   END_COLLECTION                    */
 451 };
 452
 453 /* Media descriptor (8) */
 454 static const char media_descriptor[] = {
 455         0x06, 0xbc, 0xff,       /* Usage Page 0xffbc                   */
 456         0x09, 0x88,             /* Usage 0x0088                        */
 457         0xa1, 0x01,             /* BeginCollection                     */
 458         0x85, 0x08,             /*   Report ID 8                       */
 459         0x19, 0x01,             /*   Usage Min 0x0001                  */
 460         0x29, 0xff,             /*   Usage Max 0x00ff                  */
 461         0x15, 0x01,             /*   Logical Min 1                     */
 462         0x26, 0xff, 0x00,       /*   Logical Max 255                   */
 463         0x75, 0x08,             /*   Report Size 8                     */
 464         0x95, 0x01,             /*   Report Count 1                    */
 465         0x81, 0x00,             /*   Input                             */
 466         0xc0,                   /* EndCollection                       */
 467 };                              /*                                     */
 468
 469 /* HIDPP descriptor */
 470 static const char hidpp_descriptor[] = {
 471         0x06, 0x00, 0xff,       /* Usage Page (Vendor Defined Page 1)  */
 472         0x09, 0x01,             /* Usage (Vendor Usage 1)              */
 473         0xa1, 0x01,             /* Collection (Application)            */
 474         0x85, 0x10,             /*   Report ID (16)                    */
 475         0x75, 0x08,             /*   Report Size (8)                   */
 476         0x95, 0x06,             /*   Report Count (6)                  */
 477         0x15, 0x00,             /*   Logical Minimum (0)               */
 478         0x26, 0xff, 0x00,       /*   Logical Maximum (255)             */
 479         0x09, 0x01,             /*   Usage (Vendor Usage 1)            */
 480         0x81, 0x00,             /*   Input (Data,Arr,Abs)              */
 481         0x09, 0x01,             /*   Usage (Vendor Usage 1)            */
 482         0x91, 0x00,             /*   Output (Data,Arr,Abs)             */
 483         0xc0,                   /* End Collection                      */
 484         0x06, 0x00, 0xff,       /* Usage Page (Vendor Defined Page 1)  */
 485         0x09, 0x02,             /* Usage (Vendor Usage 2)              */
 486         0xa1, 0x01,             /* Collection (Application)            */
 487         0x85, 0x11,             /*   Report ID (17)                    */
 488         0x75, 0x08,             /*   Report Size (8)                   */
 489         0x95, 0x13,             /*   Report Count (19)                 */
 490         0x15, 0x00,             /*   Logical Minimum (0)               */
 491         0x26, 0xff, 0x00,       /*   Logical Maximum (255)             */
 492         0x09, 0x02,             /*   Usage (Vendor Usage 2)            */
 493         0x81, 0x00,             /*   Input (Data,Arr,Abs)              */
 494         0x09, 0x02,             /*   Usage (Vendor Usage 2)            */
 495         0x91, 0x00,             /*   Output (Data,Arr,Abs)             */
 496         0xc0,                   /* End Collection                      */
 497         0x06, 0x00, 0xff,       /* Usage Page (Vendor Defined Page 1)  */
 498         0x09, 0x04,             /* Usage (Vendor Usage 0x04)           */
 499         0xa1, 0x01,             /* Collection (Application)            */
 500         0x85, 0x20,             /*   Report ID (32)                    */
 501         0x75, 0x08,             /*   Report Size (8)                   */
 502         0x95, 0x0e,             /*   Report Count (14)                 */
 503         0x15, 0x00,             /*   Logical Minimum (0)               */
 504         0x26, 0xff, 0x00,       /*   Logical Maximum (255)             */
 505         0x09, 0x41,             /*   Usage (Vendor Usage 0x41)         */
 506         0x81, 0x00,             /*   Input (Data,Arr,Abs)              */
 507         0x09, 0x41,             /*   Usage (Vendor Usage 0x41)         */
 508         0x91, 0x00,             /*   Output (Data,Arr,Abs)             */
 509         0x85, 0x21,             /*   Report ID (33)                    */
 510         0x95, 0x1f,             /*   Report Count (31)                 */
 511         0x15, 0x00,             /*   Logical Minimum (0)               */
 512         0x26, 0xff, 0x00,       /*   Logical Maximum (255)             */
 513         0x09, 0x42,             /*   Usage (Vendor Usage 0x42)         */
 514         0x81, 0x00,             /*   Input (Data,Arr,Abs)              */
 515         0x09, 0x42,             /*   Usage (Vendor Usage 0x42)         */
 516         0x91, 0x00,             /*   Output (Data,Arr,Abs)             */
 517         0xc0,                   /* End Collection                      */
 518 };
 519
 520 /* Maximum size of all defined hid reports in bytes (including report id) */
 521 #define MAX_REPORT_SIZE 8
 522
 523 /* Make sure all descriptors are present here */
 524 #define MAX_RDESC_SIZE                          \
 525         (sizeof(kbd_descriptor) +               \
 526          sizeof(mse_bluetooth_descriptor) +     \
 527          sizeof(mse5_bluetooth_descriptor) +    \
 528          sizeof(consumer_descriptor) +          \
 529          sizeof(syscontrol_descriptor) +        \
 530          sizeof(media_descriptor) +     \
 531          sizeof(hidpp_descriptor))
 532
 533 /* Number of possible hid report types that can be created by this driver.
 534  *
 535  * Right now, RF report types have the same report types (or report id's)
 536  * than the hid report created from those RF reports. In the future
 537  * this doesnt have to be true.
 538  *
 539  * For instance, RF report type 0x01 which has a size of 8 bytes, corresponds
 540  * to hid report id 0x01, this is standard keyboard. Same thing applies to mice
 541  * reports and consumer control, etc. If a new RF report is created, it doesn't
 542  * has to have the same report id as its corresponding hid report, so an
 543  * translation may have to take place for future report types.
 544  */
 545 #define NUMBER_OF_HID_REPORTS 32
 546 static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = {
 547         [1] = 8,                /* Standard keyboard */
 548         [2] = 8,                /* Standard mouse */
 549         [3] = 5,                /* Consumer control */
 550         [4] = 2,                /* System control */
 551         [8] = 2,                /* Media Center */
 552 };
 553
 554
 555 #define LOGITECH_DJ_INTERFACE_NUMBER 0x02
 556
 557 static const struct hid_ll_driver logi_dj_ll_driver;
 558
 559 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
 560 static void delayedwork_callback(struct work_struct *work);
 561
 562 static LIST_HEAD(dj_hdev_list);
 563 static DEFINE_MUTEX(dj_hdev_list_lock);
 564
 565 static bool recvr_type_is_bluetooth(enum recvr_type type)
 566 {
 567         return type == recvr_type_bluetooth || type == recvr_type_dinovo;
 568 }
 569
 570 /*
 571  * dj/HID++ receivers are really a single logical entity, but for BIOS/Windows
 572  * compatibility they have multiple USB interfaces. On HID++ receivers we need
 573  * to listen for input reports on both interfaces. The functions below are used
 574  * to create a single struct dj_receiver_dev for all interfaces belonging to
 575  * a single USB-device / receiver.
 576  */
 577 static struct dj_receiver_dev *dj_find_receiver_dev(struct hid_device *hdev,
 578                                                     enum recvr_type type)
 579 {
 580         struct dj_receiver_dev *djrcv_dev;
 581         char sep;
 582
 583         /*
 584          * The bluetooth receiver contains a built-in hub and has separate
 585          * USB-devices for the keyboard and mouse interfaces.
 586          */
 587         sep = recvr_type_is_bluetooth(type) ? '.' : '/';
 588
 589         /* Try to find an already-probed interface from the same device */
 590         list_for_each_entry(djrcv_dev, &dj_hdev_list, list) {
 591                 if (djrcv_dev->mouse &&
 592                     hid_compare_device_paths(hdev, djrcv_dev->mouse, sep)) {
 593                         kref_get(&djrcv_dev->kref);
 594                         return djrcv_dev;
 595                 }
 596                 if (djrcv_dev->keyboard &&
 597                     hid_compare_device_paths(hdev, djrcv_dev->keyboard, sep)) {
 598                         kref_get(&djrcv_dev->kref);
 599                         return djrcv_dev;
 600                 }
 601                 if (djrcv_dev->hidpp &&
 602                     hid_compare_device_paths(hdev, djrcv_dev->hidpp, sep)) {
 603                         kref_get(&djrcv_dev->kref);
 604                         return djrcv_dev;
 605                 }
 606         }
 607
 608         return NULL;
 609 }
 610
 611 static void dj_release_receiver_dev(struct kref *kref)
 612 {
 613         struct dj_receiver_dev *djrcv_dev = container_of(kref, struct dj_receiver_dev, kref);
 614
 615         list_del(&djrcv_dev->list);
 616         kfifo_free(&djrcv_dev->notif_fifo);
 617         kfree(djrcv_dev);
 618 }
 619
 620 static void dj_put_receiver_dev(struct hid_device *hdev)
 621 {
 622         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
 623
 624         mutex_lock(&dj_hdev_list_lock);
 625
 626         if (djrcv_dev->mouse == hdev)
 627                 djrcv_dev->mouse = NULL;
 628         if (djrcv_dev->keyboard == hdev)
 629                 djrcv_dev->keyboard = NULL;
 630         if (djrcv_dev->hidpp == hdev)
 631                 djrcv_dev->hidpp = NULL;
 632
 633         kref_put(&djrcv_dev->kref, dj_release_receiver_dev);
 634
 635         mutex_unlock(&dj_hdev_list_lock);
 636 }
 637
 638 static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
 639                                                    enum recvr_type type,
 640                                                    unsigned int application,
 641                                                    bool is_hidpp)
 642 {
 643         struct dj_receiver_dev *djrcv_dev;
 644
 645         mutex_lock(&dj_hdev_list_lock);
 646
 647         djrcv_dev = dj_find_receiver_dev(hdev, type);
 648         if (!djrcv_dev) {
 649                 djrcv_dev = kzalloc(sizeof(*djrcv_dev), GFP_KERNEL);
 650                 if (!djrcv_dev)
 651                         goto out;
 652
 653                 INIT_WORK(&djrcv_dev->work, delayedwork_callback);
 654                 spin_lock_init(&djrcv_dev->lock);
 655                 if (kfifo_alloc(&djrcv_dev->notif_fifo,
 656                             DJ_MAX_NUMBER_NOTIFS * sizeof(struct dj_workitem),
 657                             GFP_KERNEL)) {
 658                         kfree(djrcv_dev);
 659                         djrcv_dev = NULL;
 660                         goto out;
 661                 }
 662                 kref_init(&djrcv_dev->kref);
 663                 list_add_tail(&djrcv_dev->list, &dj_hdev_list);
 664                 djrcv_dev->last_query = jiffies;
 665                 djrcv_dev->type = type;
 666         }
 667
 668         if (application == HID_GD_KEYBOARD)
 669                 djrcv_dev->keyboard = hdev;
 670         if (application == HID_GD_MOUSE)
 671                 djrcv_dev->mouse = hdev;
 672         if (is_hidpp)
 673                 djrcv_dev->hidpp = hdev;
 674
 675         hid_set_drvdata(hdev, djrcv_dev);
 676 out:
 677         mutex_unlock(&dj_hdev_list_lock);
 678         return djrcv_dev;
 679 }
 680
 681 static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
 682                                               struct dj_workitem *workitem)
 683 {
 684         /* Called in delayed work context */
 685         struct dj_device *dj_dev;
 686         unsigned long flags;
 687
 688         spin_lock_irqsave(&djrcv_dev->lock, flags);
 689         dj_dev = djrcv_dev->paired_dj_devices[workitem->device_index];
 690         djrcv_dev->paired_dj_devices[workitem->device_index] = NULL;
 691         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 692
 693         if (dj_dev != NULL) {
 694                 hid_destroy_device(dj_dev->hdev);
 695                 kfree(dj_dev);
 696         } else {
 697                 hid_err(djrcv_dev->hidpp, "%s: can't destroy a NULL device\n",
 698                         __func__);
 699         }
 700 }
 701
 702 static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
 703                                           struct dj_workitem *workitem)
 704 {
 705         /* Called in delayed work context */
 706         struct hid_device *djrcv_hdev = djrcv_dev->hidpp;
 707         struct hid_device *dj_hiddev;
 708         struct dj_device *dj_dev;
 709         u8 device_index = workitem->device_index;
 710         unsigned long flags;
 711
 712         /* Device index goes from 1 to 6, we need 3 bytes to store the
 713          * semicolon, the index, and a null terminator
 714          */
 715         unsigned char tmpstr[3];
 716
 717         /* We are the only one ever adding a device, no need to lock */
 718         if (djrcv_dev->paired_dj_devices[device_index]) {
 719                 /* The device is already known. No need to reallocate it. */
 720                 dbg_hid("%s: device is already known\n", __func__);
 721                 return;
 722         }
 723
 724         dj_hiddev = hid_allocate_device();
 725         if (IS_ERR(dj_hiddev)) {
 726                 hid_err(djrcv_hdev, "%s: hid_allocate_dev failed\n", __func__);
 727                 return;
 728         }
 729
 730         dj_hiddev->ll_driver = &logi_dj_ll_driver;
 731
 732         dj_hiddev->dev.parent = &djrcv_hdev->dev;
 733         dj_hiddev->bus = BUS_USB;
 734         dj_hiddev->vendor = djrcv_hdev->vendor;
 735         dj_hiddev->product = (workitem->quad_id_msb << 8) |
 736                               workitem->quad_id_lsb;
 737         if (workitem->device_type) {
 738                 const char *type_str = "Device";
 739
 740                 switch (workitem->device_type) {
 741                 case 0x01: type_str = "Keyboard";       break;
 742                 case 0x02: type_str = "Mouse";          break;
 743                 case 0x03: type_str = "Numpad";         break;
 744                 case 0x04: type_str = "Presenter";      break;
 745                 case 0x07: type_str = "Remote Control"; break;
 746                 case 0x08: type_str = "Trackball";      break;
 747                 case 0x09: type_str = "Touchpad";       break;
 748                 }
 749                 snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
 750                         "Logitech Wireless %s PID:%04x",
 751                         type_str, dj_hiddev->product);
 752         } else {
 753                 snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
 754                         "Logitech Wireless Device PID:%04x",
 755                         dj_hiddev->product);
 756         }
 757
 758         if (djrcv_dev->type == recvr_type_27mhz)
 759                 dj_hiddev->group = HID_GROUP_LOGITECH_27MHZ_DEVICE;
 760         else
 761                 dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE;
 762
 763         memcpy(dj_hiddev->phys, djrcv_hdev->phys, sizeof(djrcv_hdev->phys));
 764         snprintf(tmpstr, sizeof(tmpstr), ":%d", device_index);
 765         strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys));
 766
 767         dj_dev = kzalloc(sizeof(struct dj_device), GFP_KERNEL);
 768
 769         if (!dj_dev) {
 770                 hid_err(djrcv_hdev, "%s: failed allocating dj_dev\n", __func__);
 771                 goto dj_device_allocate_fail;
 772         }
 773
 774         dj_dev->reports_supported = workitem->reports_supported;
 775         dj_dev->hdev = dj_hiddev;
 776         dj_dev->dj_receiver_dev = djrcv_dev;
 777         dj_dev->device_index = device_index;
 778         dj_hiddev->driver_data = dj_dev;
 779
 780         spin_lock_irqsave(&djrcv_dev->lock, flags);
 781         djrcv_dev->paired_dj_devices[device_index] = dj_dev;
 782         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 783
 784         if (hid_add_device(dj_hiddev)) {
 785                 hid_err(djrcv_hdev, "%s: failed adding dj_device\n", __func__);
 786                 goto hid_add_device_fail;
 787         }
 788
 789         return;
 790
 791 hid_add_device_fail:
 792         spin_lock_irqsave(&djrcv_dev->lock, flags);
 793         djrcv_dev->paired_dj_devices[device_index] = NULL;
 794         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 795         kfree(dj_dev);
 796 dj_device_allocate_fail:
 797         hid_destroy_device(dj_hiddev);
 798 }
 799
 800 static void delayedwork_callback(struct work_struct *work)
 801 {
 802         struct dj_receiver_dev *djrcv_dev =
 803                 container_of(work, struct dj_receiver_dev, work);
 804
 805         struct dj_workitem workitem;
 806         unsigned long flags;
 807         int count;
 808         int retval;
 809
 810         dbg_hid("%s\n", __func__);
 811
 812         spin_lock_irqsave(&djrcv_dev->lock, flags);
 813
 814         /*
 815          * Since we attach to multiple interfaces, we may get scheduled before
 816          * we are bound to the HID++ interface, catch this.
 817          */
 818         if (!djrcv_dev->ready) {
 819                 pr_warn("%s: delayedwork queued before hidpp interface was enumerated\n",
 820                         __func__);
 821                 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 822                 return;
 823         }
 824
 825         count = kfifo_out(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
 826
 827         if (count != sizeof(workitem)) {
 828                 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 829                 return;
 830         }
 831
 832         if (!kfifo_is_empty(&djrcv_dev->notif_fifo))
 833                 schedule_work(&djrcv_dev->work);
 834
 835         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 836
 837         switch (workitem.type) {
 838         case WORKITEM_TYPE_PAIRED:
 839                 logi_dj_recv_add_djhid_device(djrcv_dev, &workitem);
 840                 break;
 841         case WORKITEM_TYPE_UNPAIRED:
 842                 logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem);
 843                 break;
 844         case WORKITEM_TYPE_UNKNOWN:
 845                 retval = logi_dj_recv_query_paired_devices(djrcv_dev);
 846                 if (retval) {
 847                         hid_err(djrcv_dev->hidpp, "%s: logi_dj_recv_query_paired_devices error: %d\n",
 848                                 __func__, retval);
 849                 }
 850                 break;
 851         case WORKITEM_TYPE_EMPTY:
 852                 dbg_hid("%s: device list is empty\n", __func__);
 853                 break;
 854         }
 855 }
 856
 857 /*
 858  * Sometimes we receive reports for which we do not have a paired dj_device
 859  * associated with the device_index or report-type to forward the report to.
 860  * This means that the original "device paired" notification corresponding
 861  * to the dj_device never arrived to this driver. Possible reasons for this are:
 862  * 1) hid-core discards all packets coming from a device during probe().
 863  * 2) if the receiver is plugged into a KVM switch then the pairing reports
 864  * are only forwarded to it if the focus is on this PC.
 865  * This function deals with this by re-asking the receiver for the list of
 866  * connected devices in the delayed work callback.
 867  * This function MUST be called with djrcv->lock held.
 868  */
 869 static void logi_dj_recv_queue_unknown_work(struct dj_receiver_dev *djrcv_dev)
 870 {
 871         struct dj_workitem workitem = { .type = WORKITEM_TYPE_UNKNOWN };
 872
 873         /* Rate limit queries done because of unhandled reports to 2/sec */
 874         if (time_before(jiffies, djrcv_dev->last_query + HZ / 2))
 875                 return;
 876
 877         kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
 878         schedule_work(&djrcv_dev->work);
 879 }
 880
 881 static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
 882                                            struct dj_report *dj_report)
 883 {
 884         /* We are called from atomic context (tasklet && djrcv->lock held) */
 885         struct dj_workitem workitem = {
 886                 .device_index = dj_report->device_index,
 887         };
 888
 889         switch (dj_report->report_type) {
 890         case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
 891                 workitem.type = WORKITEM_TYPE_PAIRED;
 892                 if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
 893                     SPFUNCTION_DEVICE_LIST_EMPTY) {
 894                         workitem.type = WORKITEM_TYPE_EMPTY;
 895                         break;
 896                 }
 897                 fallthrough;
 898         case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
 899                 workitem.quad_id_msb =
 900                         dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB];
 901                 workitem.quad_id_lsb =
 902                         dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB];
 903                 workitem.reports_supported = get_unaligned_le32(
 904                                                 dj_report->report_params +
 905                                                 DEVICE_PAIRED_RF_REPORT_TYPE);
 906                 workitem.reports_supported |= HIDPP;
 907                 if (dj_report->report_type == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED)
 908                         workitem.type = WORKITEM_TYPE_UNPAIRED;
 909                 break;
 910         default:
 911                 logi_dj_recv_queue_unknown_work(djrcv_dev);
 912                 return;
 913         }
 914
 915         kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
 916         schedule_work(&djrcv_dev->work);
 917 }
 918
 919 /*
 920  * Some quad/bluetooth keyboards have a builtin touchpad in this case we see
 921  * only 1 paired device with a device_type of REPORT_TYPE_KEYBOARD. For the
 922  * touchpad to work we must also forward mouse input reports to the dj_hiddev
 923  * created for the keyboard (instead of forwarding them to a second paired
 924  * device with a device_type of REPORT_TYPE_MOUSE as we normally would).
 925  *
 926  * On Dinovo receivers the keyboard's touchpad and an optional paired actual
 927  * mouse send separate input reports, INPUT(2) aka STD_MOUSE for the mouse
 928  * and INPUT(5) aka KBD_MOUSE for the keyboard's touchpad.
 929  *
 930  * On MX5x00 receivers (which can also be paired with a Dinovo keyboard)
 931  * INPUT(2) is used for both an optional paired actual mouse and for the
 932  * keyboard's touchpad.
 933  */
 934 static const u16 kbd_builtin_touchpad_ids[] = {
 935         0xb309, /* Dinovo Edge */
 936         0xb30c, /* Dinovo Mini */
 937 };
 938
 939 static void logi_hidpp_dev_conn_notif_equad(struct hid_device *hdev,
 940                                             struct hidpp_event *hidpp_report,
 941                                             struct dj_workitem *workitem)
 942 {
 943         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
 944         int i, id;
 945
 946         workitem->type = WORKITEM_TYPE_PAIRED;
 947         workitem->device_type = hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
 948                                 HIDPP_DEVICE_TYPE_MASK;
 949         workitem->quad_id_msb = hidpp_report->params[HIDPP_PARAM_EQUAD_MSB];
 950         workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_EQUAD_LSB];
 951         switch (workitem->device_type) {
 952         case REPORT_TYPE_KEYBOARD:
 953                 workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
 954                                                POWER_KEYS | MEDIA_CENTER |
 955                                                HIDPP;
 956                 id = (workitem->quad_id_msb << 8) | workitem->quad_id_lsb;
 957                 for (i = 0; i < ARRAY_SIZE(kbd_builtin_touchpad_ids); i++) {
 958                         if (id == kbd_builtin_touchpad_ids[i]) {
 959                                 if (djrcv_dev->type == recvr_type_dinovo)
 960                                         workitem->reports_supported |= KBD_MOUSE;
 961                                 else
 962                                         workitem->reports_supported |= STD_MOUSE;
 963                                 break;
 964                         }
 965                 }
 966                 break;
 967         case REPORT_TYPE_MOUSE:
 968                 workitem->reports_supported |= STD_MOUSE | HIDPP;
 969                 if (djrcv_dev->type == recvr_type_mouse_only)
 970                         workitem->reports_supported |= MULTIMEDIA;
 971                 break;
 972         }
 973 }
 974
 975 static void logi_hidpp_dev_conn_notif_27mhz(struct hid_device *hdev,
 976                                             struct hidpp_event *hidpp_report,
 977                                             struct dj_workitem *workitem)
 978 {
 979         workitem->type = WORKITEM_TYPE_PAIRED;
 980         workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID];
 981         switch (hidpp_report->device_index) {
 982         case 1: /* Index 1 is always a mouse */
 983         case 2: /* Index 2 is always a mouse */
 984                 workitem->device_type = HIDPP_DEVICE_TYPE_MOUSE;
 985                 workitem->reports_supported |= STD_MOUSE | HIDPP;
 986                 break;
 987         case 3: /* Index 3 is always the keyboard */
 988                 if (hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] & HIDPP_27MHZ_SECURE_MASK) {
 989                         hid_info(hdev, "Keyboard connection is encrypted\n");
 990                 } else {
 991                         hid_warn(hdev, "Keyboard events are send over the air in plain-text / unencrypted\n");
 992                         hid_warn(hdev, "See: https://gitlab.freedesktop.org/jwrdegoede/logitech-27mhz-keyboard-encryption-setup/\n");
 993                 }
 994                 fallthrough;
 995         case 4: /* Index 4 is used for an optional separate numpad */
 996                 workitem->device_type = HIDPP_DEVICE_TYPE_KEYBOARD;
 997                 workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
 998                                                POWER_KEYS | HIDPP;
 999                 break;
1000         default:
1001                 hid_warn(hdev, "%s: unexpected device-index %d", __func__,
1002                          hidpp_report->device_index);
1003         }
1004 }
1005
1006 static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
1007                                         struct hidpp_event *hidpp_report)
1008 {
1009         /* We are called from atomic context (tasklet && djrcv->lock held) */
1010         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1011         const char *device_type = "UNKNOWN";
1012         struct dj_workitem workitem = {
1013                 .type = WORKITEM_TYPE_EMPTY,
1014                 .device_index = hidpp_report->device_index,
1015         };
1016
1017         switch (hidpp_report->params[HIDPP_PARAM_PROTO_TYPE]) {
1018         case 0x01:
1019                 device_type = "Bluetooth";
1020                 /* Bluetooth connect packet contents is the same as (e)QUAD */
1021                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1022                 if (!(hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
1023                                                 HIDPP_MANUFACTURER_MASK)) {
1024                         hid_info(hdev, "Non Logitech device connected on slot %d\n",
1025                                  hidpp_report->device_index);
1026                         workitem.reports_supported &= ~HIDPP;
1027                 }
1028                 break;
1029         case 0x02:
1030                 device_type = "27 Mhz";
1031                 logi_hidpp_dev_conn_notif_27mhz(hdev, hidpp_report, &workitem);
1032                 break;
1033         case 0x03:
1034                 device_type = "QUAD or eQUAD";
1035                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1036                 break;
1037         case 0x04:
1038                 device_type = "eQUAD step 4 DJ";
1039                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1040                 break;
1041         case 0x05:
1042                 device_type = "DFU Lite";
1043                 break;
1044         case 0x06:
1045                 device_type = "eQUAD step 4 Lite";
1046                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1047                 break;
1048         case 0x07:
1049                 device_type = "eQUAD step 4 Gaming";
1050                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1051                 workitem.reports_supported |= STD_KEYBOARD;
1052                 break;
1053         case 0x08:
1054                 device_type = "eQUAD step 4 for gamepads";
1055                 break;
1056         case 0x0a:
1057                 device_type = "eQUAD nano Lite";
1058                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1059                 break;
1060         case 0x0c:
1061                 device_type = "eQUAD Lightspeed 1";
1062                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1063                 workitem.reports_supported |= STD_KEYBOARD;
1064                 break;
1065         case 0x0d:
1066                 device_type = "eQUAD Lightspeed 1.1";
1067                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1068                 workitem.reports_supported |= STD_KEYBOARD;
1069                 break;
1070         case 0x0f:
1071         case 0x11:
1072                 device_type = "eQUAD Lightspeed 1.2";
1073                 logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
1074                 workitem.reports_supported |= STD_KEYBOARD;
1075                 break;
1076         }
1077
1078         /* custom receiver device (eg. powerplay) */
1079         if (hidpp_report->device_index == 7) {
1080                 workitem.reports_supported |= HIDPP;
1081         }
1082
1083         if (workitem.type == WORKITEM_TYPE_EMPTY) {
1084                 hid_warn(hdev,
1085                          "unusable device of type %s (0x%02x) connected on slot %d",
1086                          device_type,
1087                          hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
1088                          hidpp_report->device_index);
1089                 return;
1090         }
1091
1092         hid_info(hdev, "device of type %s (0x%02x) connected on slot %d",
1093                  device_type, hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
1094                  hidpp_report->device_index);
1095
1096         kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1097         schedule_work(&djrcv_dev->work);
1098 }
1099
1100 static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
1101                                              struct dj_report *dj_report)
1102 {
1103         /* We are called from atomic context (tasklet && djrcv->lock held) */
1104         unsigned int i;
1105         u8 reportbuffer[MAX_REPORT_SIZE];
1106         struct dj_device *djdev;
1107
1108         djdev = djrcv_dev->paired_dj_devices[dj_report->device_index];
1109
1110         memset(reportbuffer, 0, sizeof(reportbuffer));
1111
1112         for (i = 0; i < NUMBER_OF_HID_REPORTS; i++) {
1113                 if (djdev->reports_supported & (1 << i)) {
1114                         reportbuffer[0] = i;
1115                         if (hid_input_report(djdev->hdev,
1116                                              HID_INPUT_REPORT,
1117                                              reportbuffer,
1118                                              hid_reportid_size_map[i], 1)) {
1119                                 dbg_hid("hid_input_report error sending null "
1120                                         "report\n");
1121                         }
1122                 }
1123         }
1124 }
1125
1126 static void logi_dj_recv_forward_dj(struct dj_receiver_dev *djrcv_dev,
1127                                     struct dj_report *dj_report)
1128 {
1129         /* We are called from atomic context (tasklet && djrcv->lock held) */
1130         struct dj_device *dj_device;
1131
1132         dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index];
1133
1134         if ((dj_report->report_type > ARRAY_SIZE(hid_reportid_size_map) - 1) ||
1135             (hid_reportid_size_map[dj_report->report_type] == 0)) {
1136                 dbg_hid("invalid report type:%x\n", dj_report->report_type);
1137                 return;
1138         }
1139
1140         if (hid_input_report(dj_device->hdev,
1141                         HID_INPUT_REPORT, &dj_report->report_type,
1142                         hid_reportid_size_map[dj_report->report_type], 1)) {
1143                 dbg_hid("hid_input_report error\n");
1144         }
1145 }
1146
1147 static void logi_dj_recv_forward_report(struct dj_device *dj_dev, u8 *data,
1148                                         int size)
1149 {
1150         /* We are called from atomic context (tasklet && djrcv->lock held) */
1151         if (hid_input_report(dj_dev->hdev, HID_INPUT_REPORT, data, size, 1))
1152                 dbg_hid("hid_input_report error\n");
1153 }
1154
1155 static void logi_dj_recv_forward_input_report(struct hid_device *hdev,
1156                                               u8 *data, int size)
1157 {
1158         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1159         struct dj_device *dj_dev;
1160         unsigned long flags;
1161         u8 report = data[0];
1162         int i;
1163
1164         if (report > REPORT_TYPE_RFREPORT_LAST) {
1165                 hid_err(hdev, "Unexpected input report number %d\n", report);
1166                 return;
1167         }
1168
1169         spin_lock_irqsave(&djrcv_dev->lock, flags);
1170         for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
1171                 dj_dev = djrcv_dev->paired_dj_devices[i];
1172                 if (dj_dev && (dj_dev->reports_supported & BIT(report))) {
1173                         logi_dj_recv_forward_report(dj_dev, data, size);
1174                         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1175                         return;
1176                 }
1177         }
1178
1179         logi_dj_recv_queue_unknown_work(djrcv_dev);
1180         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1181
1182         dbg_hid("No dj-devs handling input report number %d\n", report);
1183 }
1184
1185 static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
1186                                     struct dj_report *dj_report)
1187 {
1188         struct hid_device *hdev = djrcv_dev->hidpp;
1189         struct hid_report *report;
1190         struct hid_report_enum *output_report_enum;
1191         u8 *data = (u8 *)(&dj_report->device_index);
1192         unsigned int i;
1193
1194         output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
1195         report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
1196
1197         if (!report) {
1198                 hid_err(hdev, "%s: unable to find dj report\n", __func__);
1199                 return -ENODEV;
1200         }
1201
1202         for (i = 0; i < DJREPORT_SHORT_LENGTH - 1; i++)
1203                 report->field[0]->value[i] = data[i];
1204
1205         hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
1206
1207         return 0;
1208 }
1209
1210 static int logi_dj_recv_query_hidpp_devices(struct dj_receiver_dev *djrcv_dev)
1211 {
1212         static const u8 template[] = {
1213                 REPORT_ID_HIDPP_SHORT,
1214                 HIDPP_RECEIVER_INDEX,
1215                 HIDPP_SET_REGISTER,
1216                 HIDPP_REG_CONNECTION_STATE,
1217                 HIDPP_FAKE_DEVICE_ARRIVAL,
1218                 0x00, 0x00
1219         };
1220         u8 *hidpp_report;
1221         int retval;
1222
1223         hidpp_report = kmemdup(template, sizeof(template), GFP_KERNEL);
1224         if (!hidpp_report)
1225                 return -ENOMEM;
1226
1227         retval = hid_hw_raw_request(djrcv_dev->hidpp,
1228                                     REPORT_ID_HIDPP_SHORT,
1229                                     hidpp_report, sizeof(template),
1230                                     HID_OUTPUT_REPORT,
1231                                     HID_REQ_SET_REPORT);
1232
1233         kfree(hidpp_report);
1234         return (retval < 0) ? retval : 0;
1235 }
1236
1237 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
1238 {
1239         struct dj_report *dj_report;
1240         int retval;
1241
1242         djrcv_dev->last_query = jiffies;
1243
1244         if (djrcv_dev->type != recvr_type_dj)
1245                 return logi_dj_recv_query_hidpp_devices(djrcv_dev);
1246
1247         dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
1248         if (!dj_report)
1249                 return -ENOMEM;
1250         dj_report->report_id = REPORT_ID_DJ_SHORT;
1251         dj_report->device_index = HIDPP_RECEIVER_INDEX;
1252         dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES;
1253         retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
1254         kfree(dj_report);
1255         return retval;
1256 }
1257
1258
1259 static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
1260                                           unsigned timeout)
1261 {
1262         struct hid_device *hdev = djrcv_dev->hidpp;
1263         struct dj_report *dj_report;
1264         u8 *buf;
1265         int retval = 0;
1266
1267         dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
1268         if (!dj_report)
1269                 return -ENOMEM;
1270
1271         if (djrcv_dev->type == recvr_type_dj) {
1272                 dj_report->report_id = REPORT_ID_DJ_SHORT;
1273                 dj_report->device_index = HIDPP_RECEIVER_INDEX;
1274                 dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
1275                 dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
1276                 dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] =
1277                                                                 (u8)timeout;
1278
1279                 retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
1280
1281                 /*
1282                  * Ugly sleep to work around a USB 3.0 bug when the receiver is
1283                  * still processing the "switch-to-dj" command while we send an
1284                  * other command.
1285                  * 50 msec should gives enough time to the receiver to be ready.
1286                  */
1287                 msleep(50);
1288
1289                 if (retval)
1290                         return retval;
1291         }
1292
1293         /*
1294          * Magical bits to set up hidpp notifications when the dj devices
1295          * are connected/disconnected.
1296          *
1297          * We can reuse dj_report because HIDPP_REPORT_SHORT_LENGTH is smaller
1298          * than DJREPORT_SHORT_LENGTH.
1299          */
1300         buf = (u8 *)dj_report;
1301
1302         memset(buf, 0, HIDPP_REPORT_SHORT_LENGTH);
1303
1304         buf[0] = REPORT_ID_HIDPP_SHORT;
1305         buf[1] = HIDPP_RECEIVER_INDEX;
1306         buf[2] = 0x80;
1307         buf[3] = 0x00;
1308         buf[4] = 0x00;
1309         buf[5] = 0x09;
1310         buf[6] = 0x00;
1311
1312         retval = hid_hw_raw_request(hdev, REPORT_ID_HIDPP_SHORT, buf,
1313                         HIDPP_REPORT_SHORT_LENGTH, HID_OUTPUT_REPORT,
1314                         HID_REQ_SET_REPORT);
1315
1316         kfree(dj_report);
1317         return retval;
1318 }
1319
1320
1321 static int logi_dj_ll_open(struct hid_device *hid)
1322 {
1323         dbg_hid("%s: %s\n", __func__, hid->phys);
1324         return 0;
1325
1326 }
1327
1328 static void logi_dj_ll_close(struct hid_device *hid)
1329 {
1330         dbg_hid("%s: %s\n", __func__, hid->phys);
1331 }
1332
1333 /*
1334  * Register 0xB5 is "pairing information". It is solely intended for the
1335  * receiver, so do not overwrite the device index.
1336  */
1337 static u8 unifying_pairing_query[]  = { REPORT_ID_HIDPP_SHORT,
1338                                         HIDPP_RECEIVER_INDEX,
1339                                         HIDPP_GET_LONG_REGISTER,
1340                                         HIDPP_REG_PAIRING_INFORMATION };
1341 static u8 unifying_pairing_answer[] = { REPORT_ID_HIDPP_LONG,
1342                                         HIDPP_RECEIVER_INDEX,
1343                                         HIDPP_GET_LONG_REGISTER,
1344                                         HIDPP_REG_PAIRING_INFORMATION };
1345
1346 static int logi_dj_ll_raw_request(struct hid_device *hid,
1347                                   unsigned char reportnum, __u8 *buf,
1348                                   size_t count, unsigned char report_type,
1349                                   int reqtype)
1350 {
1351         struct dj_device *djdev = hid->driver_data;
1352         struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;
1353         u8 *out_buf;
1354         int ret;
1355
1356         if ((buf[0] == REPORT_ID_HIDPP_SHORT) ||
1357             (buf[0] == REPORT_ID_HIDPP_LONG) ||
1358             (buf[0] == REPORT_ID_HIDPP_VERY_LONG)) {
1359                 if (count < 2)
1360                         return -EINVAL;
1361
1362                 /* special case where we should not overwrite
1363                  * the device_index */
1364                 if (count == 7 && !memcmp(buf, unifying_pairing_query,
1365                                           sizeof(unifying_pairing_query)))
1366                         buf[4] = (buf[4] & 0xf0) | (djdev->device_index - 1);
1367                 else
1368                         buf[1] = djdev->device_index;
1369                 return hid_hw_raw_request(djrcv_dev->hidpp, reportnum, buf,
1370                                 count, report_type, reqtype);
1371         }
1372
1373         if (buf[0] != REPORT_TYPE_LEDS)
1374                 return -EINVAL;
1375
1376         if (djrcv_dev->type != recvr_type_dj && count >= 2) {
1377                 if (!djrcv_dev->keyboard) {
1378                         hid_warn(hid, "Received REPORT_TYPE_LEDS request before the keyboard interface was enumerated\n");
1379                         return 0;
1380                 }
1381                 /* usbhid overrides the report ID and ignores the first byte */
1382                 return hid_hw_raw_request(djrcv_dev->keyboard, 0, buf, count,
1383                                           report_type, reqtype);
1384         }
1385
1386         out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC);
1387         if (!out_buf)
1388                 return -ENOMEM;
1389
1390         if (count > DJREPORT_SHORT_LENGTH - 2)
1391                 count = DJREPORT_SHORT_LENGTH - 2;
1392
1393         out_buf[0] = REPORT_ID_DJ_SHORT;
1394         out_buf[1] = djdev->device_index;
1395         memcpy(out_buf + 2, buf, count);
1396
1397         ret = hid_hw_raw_request(djrcv_dev->hidpp, out_buf[0], out_buf,
1398                 DJREPORT_SHORT_LENGTH, report_type, reqtype);
1399
1400         kfree(out_buf);
1401         return ret;
1402 }
1403
1404 static void rdcat(char *rdesc, unsigned int *rsize, const char *data, unsigned int size)
1405 {
1406         memcpy(rdesc + *rsize, data, size);
1407         *rsize += size;
1408 }
1409
1410 static int logi_dj_ll_parse(struct hid_device *hid)
1411 {
1412         struct dj_device *djdev = hid->driver_data;
1413         unsigned int rsize = 0;
1414         char *rdesc;
1415         int retval;
1416
1417         dbg_hid("%s\n", __func__);
1418
1419         djdev->hdev->version = 0x0111;
1420         djdev->hdev->country = 0x00;
1421
1422         rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL);
1423         if (!rdesc)
1424                 return -ENOMEM;
1425
1426         if (djdev->reports_supported & STD_KEYBOARD) {
1427                 dbg_hid("%s: sending a kbd descriptor, reports_supported: %llx\n",
1428                         __func__, djdev->reports_supported);
1429                 rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
1430         }
1431
1432         if (djdev->reports_supported & STD_MOUSE) {
1433                 dbg_hid("%s: sending a mouse descriptor, reports_supported: %llx\n",
1434                         __func__, djdev->reports_supported);
1435                 if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp ||
1436                     djdev->dj_receiver_dev->type == recvr_type_mouse_only)
1437                         rdcat(rdesc, &rsize, mse_high_res_descriptor,
1438                               sizeof(mse_high_res_descriptor));
1439                 else if (djdev->dj_receiver_dev->type == recvr_type_27mhz)
1440                         rdcat(rdesc, &rsize, mse_27mhz_descriptor,
1441                               sizeof(mse_27mhz_descriptor));
1442                 else if (recvr_type_is_bluetooth(djdev->dj_receiver_dev->type))
1443                         rdcat(rdesc, &rsize, mse_bluetooth_descriptor,
1444                               sizeof(mse_bluetooth_descriptor));
1445                 else
1446                         rdcat(rdesc, &rsize, mse_descriptor,
1447                               sizeof(mse_descriptor));
1448         }
1449
1450         if (djdev->reports_supported & KBD_MOUSE) {
1451                 dbg_hid("%s: sending a kbd-mouse descriptor, reports_supported: %llx\n",
1452                         __func__, djdev->reports_supported);
1453                 rdcat(rdesc, &rsize, mse5_bluetooth_descriptor,
1454                       sizeof(mse5_bluetooth_descriptor));
1455         }
1456
1457         if (djdev->reports_supported & MULTIMEDIA) {
1458                 dbg_hid("%s: sending a multimedia report descriptor: %llx\n",
1459                         __func__, djdev->reports_supported);
1460                 rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
1461         }
1462
1463         if (djdev->reports_supported & POWER_KEYS) {
1464                 dbg_hid("%s: sending a power keys report descriptor: %llx\n",
1465                         __func__, djdev->reports_supported);
1466                 rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
1467         }
1468
1469         if (djdev->reports_supported & MEDIA_CENTER) {
1470                 dbg_hid("%s: sending a media center report descriptor: %llx\n",
1471                         __func__, djdev->reports_supported);
1472                 rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
1473         }
1474
1475         if (djdev->reports_supported & KBD_LEDS) {
1476                 dbg_hid("%s: need to send kbd leds report descriptor: %llx\n",
1477                         __func__, djdev->reports_supported);
1478         }
1479
1480         if (djdev->reports_supported & HIDPP) {
1481                 dbg_hid("%s: sending a HID++ descriptor, reports_supported: %llx\n",
1482                         __func__, djdev->reports_supported);
1483                 rdcat(rdesc, &rsize, hidpp_descriptor,
1484                       sizeof(hidpp_descriptor));
1485         }
1486
1487         retval = hid_parse_report(hid, rdesc, rsize);
1488         kfree(rdesc);
1489
1490         return retval;
1491 }
1492
1493 static int logi_dj_ll_start(struct hid_device *hid)
1494 {
1495         dbg_hid("%s\n", __func__);
1496         return 0;
1497 }
1498
1499 static void logi_dj_ll_stop(struct hid_device *hid)
1500 {
1501         dbg_hid("%s\n", __func__);
1502 }
1503
1504 static bool logi_dj_ll_may_wakeup(struct hid_device *hid)
1505 {
1506         struct dj_device *djdev = hid->driver_data;
1507         struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;
1508
1509         return hid_hw_may_wakeup(djrcv_dev->hidpp);
1510 }
1511
1512 static const struct hid_ll_driver logi_dj_ll_driver = {
1513         .parse = logi_dj_ll_parse,
1514         .start = logi_dj_ll_start,
1515         .stop = logi_dj_ll_stop,
1516         .open = logi_dj_ll_open,
1517         .close = logi_dj_ll_close,
1518         .raw_request = logi_dj_ll_raw_request,
1519         .may_wakeup = logi_dj_ll_may_wakeup,
1520 };
1521
1522 static int logi_dj_dj_event(struct hid_device *hdev,
1523                              struct hid_report *report, u8 *data,
1524                              int size)
1525 {
1526         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1527         struct dj_report *dj_report = (struct dj_report *) data;
1528         unsigned long flags;
1529
1530         /*
1531          * Here we receive all data coming from iface 2, there are 3 cases:
1532          *
1533          * 1) Data is intended for this driver i. e. data contains arrival,
1534          * departure, etc notifications, in which case we queue them for delayed
1535          * processing by the work queue. We return 1 to hid-core as no further
1536          * processing is required from it.
1537          *
1538          * 2) Data informs a connection change, if the change means rf link
1539          * loss, then we must send a null report to the upper layer to discard
1540          * potentially pressed keys that may be repeated forever by the input
1541          * layer. Return 1 to hid-core as no further processing is required.
1542          *
1543          * 3) Data is an actual input event from a paired DJ device in which
1544          * case we forward it to the correct hid device (via hid_input_report()
1545          * ) and return 1 so hid-core does not anything else with it.
1546          */
1547
1548         if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
1549             (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
1550                 /*
1551                  * Device index is wrong, bail out.
1552                  * This driver can ignore safely the receiver notifications,
1553                  * so ignore those reports too.
1554                  */
1555                 if (dj_report->device_index != DJ_RECEIVER_INDEX)
1556                         hid_err(hdev, "%s: invalid device index:%d\n",
1557                                 __func__, dj_report->device_index);
1558                 return false;
1559         }
1560
1561         spin_lock_irqsave(&djrcv_dev->lock, flags);
1562
1563         if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) {
1564                 /* received an event for an unknown device, bail out */
1565                 logi_dj_recv_queue_notification(djrcv_dev, dj_report);
1566                 goto out;
1567         }
1568
1569         switch (dj_report->report_type) {
1570         case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
1571                 /* pairing notifications are handled above the switch */
1572                 break;
1573         case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
1574                 logi_dj_recv_queue_notification(djrcv_dev, dj_report);
1575                 break;
1576         case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
1577                 if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
1578                     STATUS_LINKLOSS) {
1579                         logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
1580                 }
1581                 break;
1582         default:
1583                 logi_dj_recv_forward_dj(djrcv_dev, dj_report);
1584         }
1585
1586 out:
1587         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1588
1589         return true;
1590 }
1591
1592 static int logi_dj_hidpp_event(struct hid_device *hdev,
1593                              struct hid_report *report, u8 *data,
1594                              int size)
1595 {
1596         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1597         struct hidpp_event *hidpp_report = (struct hidpp_event *) data;
1598         struct dj_device *dj_dev;
1599         unsigned long flags;
1600         u8 device_index = hidpp_report->device_index;
1601
1602         if (device_index == HIDPP_RECEIVER_INDEX) {
1603                 /* special case were the device wants to know its unifying
1604                  * name */
1605                 if (size == HIDPP_REPORT_LONG_LENGTH &&
1606                     !memcmp(data, unifying_pairing_answer,
1607                             sizeof(unifying_pairing_answer)))
1608                         device_index = (data[4] & 0x0F) + 1;
1609                 else
1610                         return false;
1611         }
1612
1613         /*
1614          * Data is from the HID++ collection, in this case, we forward the
1615          * data to the corresponding child dj device and return 0 to hid-core
1616          * so he data also goes to the hidraw device of the receiver. This
1617          * allows a user space application to implement the full HID++ routing
1618          * via the receiver.
1619          */
1620
1621         if ((device_index < DJ_DEVICE_INDEX_MIN) ||
1622             (device_index > DJ_DEVICE_INDEX_MAX)) {
1623                 /*
1624                  * Device index is wrong, bail out.
1625                  * This driver can ignore safely the receiver notifications,
1626                  * so ignore those reports too.
1627                  */
1628                 hid_err(hdev, "%s: invalid device index:%d\n", __func__,
1629                         hidpp_report->device_index);
1630                 return false;
1631         }
1632
1633         spin_lock_irqsave(&djrcv_dev->lock, flags);
1634
1635         dj_dev = djrcv_dev->paired_dj_devices[device_index];
1636
1637         /*
1638          * With 27 MHz receivers, we do not get an explicit unpair event,
1639          * remove the old device if the user has paired a *different* device.
1640          */
1641         if (djrcv_dev->type == recvr_type_27mhz && dj_dev &&
1642             hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED &&
1643             hidpp_report->params[HIDPP_PARAM_PROTO_TYPE] == 0x02 &&
1644             hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID] !=
1645                                                 dj_dev->hdev->product) {
1646                 struct dj_workitem workitem = {
1647                         .device_index = hidpp_report->device_index,
1648                         .type = WORKITEM_TYPE_UNPAIRED,
1649                 };
1650                 kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
1651                 /* logi_hidpp_recv_queue_notif will queue the work */
1652                 dj_dev = NULL;
1653         }
1654
1655         if (dj_dev) {
1656                 logi_dj_recv_forward_report(dj_dev, data, size);
1657         } else {
1658                 if (hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED)
1659                         logi_hidpp_recv_queue_notif(hdev, hidpp_report);
1660                 else
1661                         logi_dj_recv_queue_unknown_work(djrcv_dev);
1662         }
1663
1664         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1665
1666         return false;
1667 }
1668
1669 static int logi_dj_raw_event(struct hid_device *hdev,
1670                              struct hid_report *report, u8 *data,
1671                              int size)
1672 {
1673         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1674         dbg_hid("%s, size:%d\n", __func__, size);
1675
1676         if (!djrcv_dev)
1677                 return 0;
1678
1679         if (!hdev->report_enum[HID_INPUT_REPORT].numbered) {
1680
1681                 if (djrcv_dev->unnumbered_application == HID_GD_KEYBOARD) {
1682                         /*
1683                          * For the keyboard, we can reuse the same report by
1684                          * using the second byte which is constant in the USB
1685                          * HID report descriptor.
1686                          */
1687                         data[1] = data[0];
1688                         data[0] = REPORT_TYPE_KEYBOARD;
1689
1690                         logi_dj_recv_forward_input_report(hdev, data, size);
1691
1692                         /* restore previous state */
1693                         data[0] = data[1];
1694                         data[1] = 0;
1695                 }
1696                 /*
1697                  * Mouse-only receivers send unnumbered mouse data. The 27 MHz
1698                  * receiver uses 6 byte packets, the nano receiver 8 bytes.
1699                  */
1700                 if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&
1701                     size <= 8) {
1702                         u8 mouse_report[9];
1703
1704                         /* Prepend report id */
1705                         mouse_report[0] = REPORT_TYPE_MOUSE;
1706                         memcpy(mouse_report + 1, data, size);
1707                         logi_dj_recv_forward_input_report(hdev, mouse_report,
1708                                                           size + 1);
1709                 }
1710
1711                 return false;
1712         }
1713
1714         switch (data[0]) {
1715         case REPORT_ID_DJ_SHORT:
1716                 if (size != DJREPORT_SHORT_LENGTH) {
1717                         hid_err(hdev, "Short DJ report bad size (%d)", size);
1718                         return false;
1719                 }
1720                 return logi_dj_dj_event(hdev, report, data, size);
1721         case REPORT_ID_DJ_LONG:
1722                 if (size != DJREPORT_LONG_LENGTH) {
1723                         hid_err(hdev, "Long DJ report bad size (%d)", size);
1724                         return false;
1725                 }
1726                 return logi_dj_dj_event(hdev, report, data, size);
1727         case REPORT_ID_HIDPP_SHORT:
1728                 if (size != HIDPP_REPORT_SHORT_LENGTH) {
1729                         hid_err(hdev, "Short HID++ report bad size (%d)", size);
1730                         return false;
1731                 }
1732                 return logi_dj_hidpp_event(hdev, report, data, size);
1733         case REPORT_ID_HIDPP_LONG:
1734                 if (size != HIDPP_REPORT_LONG_LENGTH) {
1735                         hid_err(hdev, "Long HID++ report bad size (%d)", size);
1736                         return false;
1737                 }
1738                 return logi_dj_hidpp_event(hdev, report, data, size);
1739         }
1740
1741         logi_dj_recv_forward_input_report(hdev, data, size);
1742
1743         return false;
1744 }
1745
1746 static int logi_dj_probe(struct hid_device *hdev,
1747                          const struct hid_device_id *id)
1748 {
1749         struct hid_report_enum *rep_enum;
1750         struct hid_report *rep;
1751         struct dj_receiver_dev *djrcv_dev;
1752         struct usb_interface *intf;
1753         unsigned int no_dj_interfaces = 0;
1754         bool has_hidpp = false;
1755         unsigned long flags;
1756         int retval;
1757
1758         /*
1759          * Call to usbhid to fetch the HID descriptors of the current
1760          * interface subsequently call to the hid/hid-core to parse the
1761          * fetched descriptors.
1762          */
1763         retval = hid_parse(hdev);
1764         if (retval) {
1765                 hid_err(hdev, "%s: parse failed\n", __func__);
1766                 return retval;
1767         }
1768
1769         /*
1770          * Some KVMs add an extra interface for e.g. mouse emulation. If we
1771          * treat these as logitech-dj interfaces then this causes input events
1772          * reported through this extra interface to not be reported correctly.
1773          * To avoid this, we treat these as generic-hid devices.
1774          */
1775         switch (id->driver_data) {
1776         case recvr_type_dj:             no_dj_interfaces = 3; break;
1777         case recvr_type_hidpp:          no_dj_interfaces = 2; break;
1778         case recvr_type_gaming_hidpp:   no_dj_interfaces = 3; break;
1779         case recvr_type_mouse_only:     no_dj_interfaces = 2; break;
1780         case recvr_type_27mhz:          no_dj_interfaces = 2; break;
1781         case recvr_type_bluetooth:      no_dj_interfaces = 2; break;
1782         case recvr_type_dinovo:         no_dj_interfaces = 2; break;
1783         }
1784         if (hid_is_usb(hdev)) {
1785                 intf = to_usb_interface(hdev->dev.parent);
1786                 if (intf && intf->altsetting->desc.bInterfaceNumber >=
1787                                                         no_dj_interfaces) {
1788                         hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1789                         return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1790                 }
1791         }
1792
1793         rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
1794
1795         /* no input reports, bail out */
1796         if (list_empty(&rep_enum->report_list))
1797                 return -ENODEV;
1798
1799         /*
1800          * Check for the HID++ application.
1801          * Note: we should theoretically check for HID++ and DJ
1802          * collections, but this will do.
1803          */
1804         list_for_each_entry(rep, &rep_enum->report_list, list) {
1805                 if (rep->application == 0xff000001)
1806                         has_hidpp = true;
1807         }
1808
1809         /*
1810          * Ignore interfaces without DJ/HID++ collection, they will not carry
1811          * any data, dont create any hid_device for them.
1812          */
1813         if (!has_hidpp && id->driver_data == recvr_type_dj)
1814                 return -ENODEV;
1815
1816         /* get the current application attached to the node */
1817         rep = list_first_entry(&rep_enum->report_list, struct hid_report, list);
1818         djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,
1819                                         rep->application, has_hidpp);
1820         if (!djrcv_dev) {
1821                 hid_err(hdev, "%s: dj_get_receiver_dev failed\n", __func__);
1822                 return -ENOMEM;
1823         }
1824
1825         if (!rep_enum->numbered)
1826                 djrcv_dev->unnumbered_application = rep->application;
1827
1828         /* Starts the usb device and connects to upper interfaces hiddev and
1829          * hidraw */
1830         retval = hid_hw_start(hdev, HID_CONNECT_HIDRAW|HID_CONNECT_HIDDEV);
1831         if (retval) {
1832                 hid_err(hdev, "%s: hid_hw_start returned error\n", __func__);
1833                 goto hid_hw_start_fail;
1834         }
1835
1836         if (has_hidpp) {
1837                 retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
1838                 if (retval < 0) {
1839                         hid_err(hdev, "%s: logi_dj_recv_switch_to_dj_mode returned error:%d\n",
1840                                 __func__, retval);
1841                         goto switch_to_dj_mode_fail;
1842                 }
1843         }
1844
1845         /* This is enabling the polling urb on the IN endpoint */
1846         retval = hid_hw_open(hdev);
1847         if (retval < 0) {
1848                 hid_err(hdev, "%s: hid_hw_open returned error:%d\n",
1849                         __func__, retval);
1850                 goto llopen_failed;
1851         }
1852
1853         /* Allow incoming packets to arrive: */
1854         hid_device_io_start(hdev);
1855
1856         if (has_hidpp) {
1857                 spin_lock_irqsave(&djrcv_dev->lock, flags);
1858                 djrcv_dev->ready = true;
1859                 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1860                 retval = logi_dj_recv_query_paired_devices(djrcv_dev);
1861                 if (retval < 0) {
1862                         hid_err(hdev, "%s: logi_dj_recv_query_paired_devices error:%d\n",
1863                                 __func__, retval);
1864                         /*
1865                          * This can happen with a KVM, let the probe succeed,
1866                          * logi_dj_recv_queue_unknown_work will retry later.
1867                          */
1868                 }
1869         }
1870
1871         return 0;
1872
1873 llopen_failed:
1874 switch_to_dj_mode_fail:
1875         hid_hw_stop(hdev);
1876
1877 hid_hw_start_fail:
1878         dj_put_receiver_dev(hdev);
1879         return retval;
1880 }
1881
1882 #ifdef CONFIG_PM
1883 static int logi_dj_reset_resume(struct hid_device *hdev)
1884 {
1885         int retval;
1886         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1887
1888         if (!djrcv_dev || djrcv_dev->hidpp != hdev)
1889                 return 0;
1890
1891         retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
1892         if (retval < 0) {
1893                 hid_err(hdev, "%s: logi_dj_recv_switch_to_dj_mode returned error:%d\n",
1894                         __func__, retval);
1895         }
1896
1897         return 0;
1898 }
1899 #endif
1900
1901 static void logi_dj_remove(struct hid_device *hdev)
1902 {
1903         struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
1904         struct dj_device *dj_dev;
1905         unsigned long flags;
1906         int i;
1907
1908         dbg_hid("%s\n", __func__);
1909
1910         if (!djrcv_dev)
1911                 return hid_hw_stop(hdev);
1912
1913         /*
1914          * This ensures that if the work gets requeued from another
1915          * interface of the same receiver it will be a no-op.
1916          */
1917         spin_lock_irqsave(&djrcv_dev->lock, flags);
1918         djrcv_dev->ready = false;
1919         spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1920
1921         cancel_work_sync(&djrcv_dev->work);
1922
1923         hid_hw_close(hdev);
1924         hid_hw_stop(hdev);
1925
1926         /*
1927          * For proper operation we need access to all interfaces, so we destroy
1928          * the paired devices when we're unbound from any interface.
1929          *
1930          * Note we may still be bound to other interfaces, sharing the same
1931          * djrcv_dev, so we need locking here.
1932          */
1933         for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
1934                 spin_lock_irqsave(&djrcv_dev->lock, flags);
1935                 dj_dev = djrcv_dev->paired_dj_devices[i];
1936                 djrcv_dev->paired_dj_devices[i] = NULL;
1937                 spin_unlock_irqrestore(&djrcv_dev->lock, flags);
1938                 if (dj_dev != NULL) {
1939                         hid_destroy_device(dj_dev->hdev);
1940                         kfree(dj_dev);
1941                 }
1942         }
1943
1944         dj_put_receiver_dev(hdev);
1945 }
1946
1947 static const struct hid_device_id logi_dj_receivers[] = {
1948         { /* Logitech unifying receiver (0xc52b) */
1949           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1950                 USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER),
1951          .driver_data = recvr_type_dj},
1952         { /* Logitech unifying receiver (0xc532) */
1953           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1954                 USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2),
1955          .driver_data = recvr_type_dj},
1956
1957         { /* Logitech Nano mouse only receiver (0xc52f) */
1958           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1959                          USB_DEVICE_ID_LOGITECH_NANO_RECEIVER),
1960          .driver_data = recvr_type_mouse_only},
1961         { /* Logitech Nano (non DJ) receiver (0xc534) */
1962           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1963                          USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2),
1964          .driver_data = recvr_type_hidpp},
1965
1966         { /* Logitech G700(s) receiver (0xc531) */
1967           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1968                          USB_DEVICE_ID_LOGITECH_G700_RECEIVER),
1969          .driver_data = recvr_type_gaming_hidpp},
1970         { /* Logitech G602 receiver (0xc537) */
1971           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1972                 0xc537),
1973          .driver_data = recvr_type_gaming_hidpp},
1974         { /* Logitech lightspeed receiver (0xc539) */
1975           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1976                 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1),
1977          .driver_data = recvr_type_gaming_hidpp},
1978         { /* Logitech powerplay receiver (0xc53a) */
1979           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1980                 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_POWERPLAY),
1981          .driver_data = recvr_type_gaming_hidpp},
1982         { /* Logitech lightspeed receiver (0xc53f) */
1983           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1984                 USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_1),
1985          .driver_data = recvr_type_gaming_hidpp},
1986
1987         { /* Logitech 27 MHz HID++ 1.0 receiver (0xc513) */
1988           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER),
1989          .driver_data = recvr_type_27mhz},
1990         { /* Logitech 27 MHz HID++ 1.0 receiver (0xc517) */
1991           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1992                 USB_DEVICE_ID_S510_RECEIVER_2),
1993          .driver_data = recvr_type_27mhz},
1994         { /* Logitech 27 MHz HID++ 1.0 mouse-only receiver (0xc51b) */
1995           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
1996                 USB_DEVICE_ID_LOGITECH_27MHZ_MOUSE_RECEIVER),
1997          .driver_data = recvr_type_27mhz},
1998
1999         { /* Logitech MX5000 HID++ / bluetooth receiver keyboard intf. (0xc70e) */
2000           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2001                 USB_DEVICE_ID_MX5000_RECEIVER_KBD_DEV),
2002          .driver_data = recvr_type_bluetooth},
2003         { /* Logitech MX5000 HID++ / bluetooth receiver mouse intf. (0xc70a) */
2004           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2005                 USB_DEVICE_ID_MX5000_RECEIVER_MOUSE_DEV),
2006          .driver_data = recvr_type_bluetooth},
2007         { /* Logitech MX5500 HID++ / bluetooth receiver keyboard intf. (0xc71b) */
2008           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2009                 USB_DEVICE_ID_MX5500_RECEIVER_KBD_DEV),
2010          .driver_data = recvr_type_bluetooth},
2011         { /* Logitech MX5500 HID++ / bluetooth receiver mouse intf. (0xc71c) */
2012           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2013                 USB_DEVICE_ID_MX5500_RECEIVER_MOUSE_DEV),
2014          .driver_data = recvr_type_bluetooth},
2015
2016         { /* Logitech Dinovo Edge HID++ / bluetooth receiver keyboard intf. (0xc713) */
2017           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2018                 USB_DEVICE_ID_DINOVO_EDGE_RECEIVER_KBD_DEV),
2019          .driver_data = recvr_type_dinovo},
2020         { /* Logitech Dinovo Edge HID++ / bluetooth receiver mouse intf. (0xc714) */
2021           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2022                 USB_DEVICE_ID_DINOVO_EDGE_RECEIVER_MOUSE_DEV),
2023          .driver_data = recvr_type_dinovo},
2024         { /* Logitech DiNovo Mini HID++ / bluetooth receiver mouse intf. (0xc71e) */
2025           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2026                 USB_DEVICE_ID_DINOVO_MINI_RECEIVER_KBD_DEV),
2027          .driver_data = recvr_type_dinovo},
2028         { /* Logitech DiNovo Mini HID++ / bluetooth receiver keyboard intf. (0xc71f) */
2029           HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
2030                 USB_DEVICE_ID_DINOVO_MINI_RECEIVER_MOUSE_DEV),
2031          .driver_data = recvr_type_dinovo},
2032         {}
2033 };
2034
2035 MODULE_DEVICE_TABLE(hid, logi_dj_receivers);
2036
2037 static struct hid_driver logi_djreceiver_driver = {
2038         .name = "logitech-djreceiver",
2039         .id_table = logi_dj_receivers,
2040         .probe = logi_dj_probe,
2041         .remove = logi_dj_remove,
2042         .raw_event = logi_dj_raw_event,
2043 #ifdef CONFIG_PM
2044         .reset_resume = logi_dj_reset_resume,
2045 #endif
2046 };
2047
2048 module_hid_driver(logi_djreceiver_driver);
2049
2050 MODULE_LICENSE("GPL");
2051 MODULE_AUTHOR("Logitech");
2052 MODULE_AUTHOR("Nestor Lopez Casado");
2053 MODULE_AUTHOR("nlopezcasad@logitech.com");