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