drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <[email protected]>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/debugfs.h>
  20 #include <asm/unaligned.h>
  21
  22 #include <net/bluetooth/bluetooth.h>
  23 #include <net/bluetooth/hci_core.h>
  24
  25 #include "btintel.h"
  26 #include "btbcm.h"
  27 #include "btrtl.h"
  28 #include "btmtk.h"
  29
  30 #define VERSION "0.8"
  31
  32 static bool disable_scofix;
  33 static bool force_scofix;
  34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  35 static bool enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC);
  36 static bool reset = true;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE                    BIT(0)
  41 #define BTUSB_DIGIANSWER                BIT(1)
  42 #define BTUSB_CSR                       BIT(2)
  43 #define BTUSB_SNIFFER                   BIT(3)
  44 #define BTUSB_BCM92035                  BIT(4)
  45 #define BTUSB_BROKEN_ISOC               BIT(5)
  46 #define BTUSB_WRONG_SCO_MTU             BIT(6)
  47 #define BTUSB_ATH3012                   BIT(7)
  48 #define BTUSB_INTEL_COMBINED            BIT(8)
  49 #define BTUSB_INTEL_BOOT                BIT(9)
  50 #define BTUSB_BCM_PATCHRAM              BIT(10)
  51 #define BTUSB_MARVELL                   BIT(11)
  52 #define BTUSB_SWAVE                     BIT(12)
  53 #define BTUSB_AMP                       BIT(13)
  54 #define BTUSB_QCA_ROME                  BIT(14)
  55 #define BTUSB_BCM_APPLE                 BIT(15)
  56 #define BTUSB_REALTEK                   BIT(16)
  57 #define BTUSB_BCM2045                   BIT(17)
  58 #define BTUSB_IFNUM_2                   BIT(18)
  59 #define BTUSB_CW6622                    BIT(19)
  60 #define BTUSB_MEDIATEK                  BIT(20)
  61 #define BTUSB_WIDEBAND_SPEECH           BIT(21)
  62 #define BTUSB_VALID_LE_STATES           BIT(22)
  63 #define BTUSB_QCA_WCN6855               BIT(23)
  64 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
  65 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
  66 #define BTUSB_INTEL_NO_WBS_SUPPORT      BIT(26)
  67 #define BTUSB_ACTIONS_SEMI              BIT(27)
  68
  69 static const struct usb_device_id btusb_table[] = {
  70         /* Generic Bluetooth USB device */
  71         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  72
  73         /* Generic Bluetooth AMP device */
  74         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  75
  76         /* Generic Bluetooth USB interface */
  77         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  78
  79         /* Apple-specific (Broadcom) devices */
  80         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  81           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  82
  83         /* MediaTek MT76x0E */
  84         { USB_DEVICE(0x0e8d, 0x763f) },
  85
  86         /* Broadcom SoftSailing reporting vendor specific */
  87         { USB_DEVICE(0x0a5c, 0x21e1) },
  88
  89         /* Apple MacBookPro 7,1 */
  90         { USB_DEVICE(0x05ac, 0x8213) },
  91
  92         /* Apple iMac11,1 */
  93         { USB_DEVICE(0x05ac, 0x8215) },
  94
  95         /* Apple MacBookPro6,2 */
  96         { USB_DEVICE(0x05ac, 0x8218) },
  97
  98         /* Apple MacBookAir3,1, MacBookAir3,2 */
  99         { USB_DEVICE(0x05ac, 0x821b) },
 100
 101         /* Apple MacBookAir4,1 */
 102         { USB_DEVICE(0x05ac, 0x821f) },
 103
 104         /* Apple MacBookPro8,2 */
 105         { USB_DEVICE(0x05ac, 0x821a) },
 106
 107         /* Apple MacMini5,1 */
 108         { USB_DEVICE(0x05ac, 0x8281) },
 109
 110         /* AVM BlueFRITZ! USB v2.0 */
 111         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 112
 113         /* Bluetooth Ultraport Module from IBM */
 114         { USB_DEVICE(0x04bf, 0x030a) },
 115
 116         /* ALPS Modules with non-standard id */
 117         { USB_DEVICE(0x044e, 0x3001) },
 118         { USB_DEVICE(0x044e, 0x3002) },
 119
 120         /* Ericsson with non-standard id */
 121         { USB_DEVICE(0x0bdb, 0x1002) },
 122
 123         /* Canyon CN-BTU1 with HID interfaces */
 124         { USB_DEVICE(0x0c10, 0x0000) },
 125
 126         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 127         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Broadcom BCM920703 (HTC Vive) */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Foxconn - Hon Hai */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Lite-On Technology - Broadcom based */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* Broadcom devices with vendor specific id */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* ASUSTek Computer - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* Belkin F8065bf - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* IMC Networks - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Dell Computer - Broadcom based  */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* Toshiba Corp - Broadcom based */
 166         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 167           .driver_info = BTUSB_BCM_PATCHRAM },
 168
 169         /* Intel Bluetooth USB Bootloader (RAM module) */
 170         { USB_DEVICE(0x8087, 0x0a5a),
 171           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 172
 173         { }     /* Terminating entry */
 174 };
 175
 176 MODULE_DEVICE_TABLE(usb, btusb_table);
 177
 178 static const struct usb_device_id blacklist_table[] = {
 179         /* CSR BlueCore devices */
 180         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 181
 182         /* Broadcom BCM2033 without firmware */
 183         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 184
 185         /* Broadcom BCM2045 devices */
 186         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 187
 188         /* Atheros 3011 with sflash firmware */
 189         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 195         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 196
 197         /* Atheros AR9285 Malbec with sflash firmware */
 198         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 199
 200         /* Atheros 3012 with sflash firmware */
 201         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 251
 252         /* Atheros AR5BBU12 with sflash firmware */
 253         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 254
 255         /* Atheros AR5BBU12 with sflash firmware */
 256         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 258
 259         /* QCA ROME chipset */
 260         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 261                                                      BTUSB_WIDEBAND_SPEECH },
 262         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 263                                                      BTUSB_WIDEBAND_SPEECH },
 264         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 265                                                      BTUSB_WIDEBAND_SPEECH },
 266         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 267                                                      BTUSB_WIDEBAND_SPEECH },
 268         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 269                                                      BTUSB_WIDEBAND_SPEECH },
 270         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 271                                                      BTUSB_WIDEBAND_SPEECH },
 272         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 273                                                      BTUSB_WIDEBAND_SPEECH },
 274         { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
 275                                                      BTUSB_WIDEBAND_SPEECH },
 276         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 277                                                      BTUSB_WIDEBAND_SPEECH },
 278         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 279                                                      BTUSB_WIDEBAND_SPEECH },
 280         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 281                                                      BTUSB_WIDEBAND_SPEECH },
 282         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 283                                                      BTUSB_WIDEBAND_SPEECH },
 284         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 285                                                      BTUSB_WIDEBAND_SPEECH },
 286         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 287                                                      BTUSB_WIDEBAND_SPEECH },
 288         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 289                                                      BTUSB_WIDEBAND_SPEECH },
 290         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 291                                                      BTUSB_WIDEBAND_SPEECH },
 292         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 293                                                      BTUSB_WIDEBAND_SPEECH },
 294         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 295                                                      BTUSB_WIDEBAND_SPEECH },
 296         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 297                                                      BTUSB_WIDEBAND_SPEECH },
 298
 299         /* QCA WCN6855 chipset */
 300         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 301                                                      BTUSB_WIDEBAND_SPEECH |
 302                                                      BTUSB_VALID_LE_STATES },
 303         { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
 304                                                      BTUSB_WIDEBAND_SPEECH |
 305                                                      BTUSB_VALID_LE_STATES },
 306         { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
 307                                                      BTUSB_WIDEBAND_SPEECH |
 308                                                      BTUSB_VALID_LE_STATES },
 309         { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
 310                                                      BTUSB_WIDEBAND_SPEECH |
 311                                                      BTUSB_VALID_LE_STATES },
 312         { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
 313                                                      BTUSB_WIDEBAND_SPEECH |
 314                                                      BTUSB_VALID_LE_STATES },
 315         { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
 316                                                      BTUSB_WIDEBAND_SPEECH |
 317                                                      BTUSB_VALID_LE_STATES },
 318         { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
 319                                                      BTUSB_WIDEBAND_SPEECH |
 320                                                      BTUSB_VALID_LE_STATES },
 321         { USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 |
 322                                                      BTUSB_WIDEBAND_SPEECH |
 323                                                      BTUSB_VALID_LE_STATES },
 324         { USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 |
 325                                                      BTUSB_WIDEBAND_SPEECH |
 326                                                      BTUSB_VALID_LE_STATES },
 327         { USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 |
 328                                                      BTUSB_WIDEBAND_SPEECH |
 329                                                      BTUSB_VALID_LE_STATES },
 330         { USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 |
 331                                                      BTUSB_WIDEBAND_SPEECH |
 332                                                      BTUSB_VALID_LE_STATES },
 333         { USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 |
 334                                                      BTUSB_WIDEBAND_SPEECH |
 335                                                      BTUSB_VALID_LE_STATES },
 336         { USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 |
 337                                                      BTUSB_WIDEBAND_SPEECH |
 338                                                      BTUSB_VALID_LE_STATES },
 339         { USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 |
 340                                                      BTUSB_WIDEBAND_SPEECH |
 341                                                      BTUSB_VALID_LE_STATES },
 342         { USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 |
 343                                                      BTUSB_WIDEBAND_SPEECH |
 344                                                      BTUSB_VALID_LE_STATES },
 345         { USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 |
 346                                                      BTUSB_WIDEBAND_SPEECH |
 347                                                      BTUSB_VALID_LE_STATES },
 348         { USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 |
 349                                                      BTUSB_WIDEBAND_SPEECH |
 350                                                      BTUSB_VALID_LE_STATES },
 351         { USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 |
 352                                                      BTUSB_WIDEBAND_SPEECH |
 353                                                      BTUSB_VALID_LE_STATES },
 354         { USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 |
 355                                                      BTUSB_WIDEBAND_SPEECH |
 356                                                      BTUSB_VALID_LE_STATES },
 357         { USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 |
 358                                                      BTUSB_WIDEBAND_SPEECH |
 359                                                      BTUSB_VALID_LE_STATES },
 360         { USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 |
 361                                                      BTUSB_WIDEBAND_SPEECH |
 362                                                      BTUSB_VALID_LE_STATES },
 363         { USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 |
 364                                                      BTUSB_WIDEBAND_SPEECH |
 365                                                      BTUSB_VALID_LE_STATES },
 366         { USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 |
 367                                                      BTUSB_WIDEBAND_SPEECH |
 368                                                      BTUSB_VALID_LE_STATES },
 369         { USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 |
 370                                                      BTUSB_WIDEBAND_SPEECH |
 371                                                      BTUSB_VALID_LE_STATES },
 372         { USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 |
 373                                                      BTUSB_WIDEBAND_SPEECH |
 374                                                      BTUSB_VALID_LE_STATES },
 375         { USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 |
 376                                                      BTUSB_WIDEBAND_SPEECH |
 377                                                      BTUSB_VALID_LE_STATES },
 378         { USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 |
 379                                                      BTUSB_WIDEBAND_SPEECH |
 380                                                      BTUSB_VALID_LE_STATES },
 381         { USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 |
 382                                                      BTUSB_WIDEBAND_SPEECH |
 383                                                      BTUSB_VALID_LE_STATES },
 384         { USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 |
 385                                                      BTUSB_WIDEBAND_SPEECH |
 386                                                      BTUSB_VALID_LE_STATES },
 387         { USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 |
 388                                                      BTUSB_WIDEBAND_SPEECH |
 389                                                      BTUSB_VALID_LE_STATES },
 390         { USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 |
 391                                                      BTUSB_WIDEBAND_SPEECH |
 392                                                      BTUSB_VALID_LE_STATES },
 393         { USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 |
 394                                                      BTUSB_WIDEBAND_SPEECH |
 395                                                      BTUSB_VALID_LE_STATES },
 396         { USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 |
 397                                                      BTUSB_WIDEBAND_SPEECH |
 398                                                      BTUSB_VALID_LE_STATES },
 399         { USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 |
 400                                                      BTUSB_WIDEBAND_SPEECH |
 401                                                      BTUSB_VALID_LE_STATES },
 402         { USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 |
 403                                                      BTUSB_WIDEBAND_SPEECH |
 404                                                      BTUSB_VALID_LE_STATES },
 405
 406         /* QCA WCN785x chipset */
 407         { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
 408                                                      BTUSB_WIDEBAND_SPEECH |
 409                                                      BTUSB_VALID_LE_STATES },
 410
 411         /* Broadcom BCM2035 */
 412         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 413         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 414         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 415
 416         /* Broadcom BCM2045 */
 417         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 418         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 419
 420         /* IBM/Lenovo ThinkPad with Broadcom chip */
 421         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 422         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 423
 424         /* HP laptop with Broadcom chip */
 425         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 426
 427         /* Dell laptop with Broadcom chip */
 428         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 429
 430         /* Dell Wireless 370 and 410 devices */
 431         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 432         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 433
 434         /* Belkin F8T012 and F8T013 devices */
 435         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 436         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 437
 438         /* Asus WL-BTD202 device */
 439         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 440
 441         /* Kensington Bluetooth USB adapter */
 442         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 443
 444         /* RTX Telecom based adapters with buggy SCO support */
 445         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 446         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 447
 448         /* CONWISE Technology based adapters with buggy SCO support */
 449         { USB_DEVICE(0x0e5e, 0x6622),
 450           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 451
 452         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 453         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 454
 455         /* Digianswer devices */
 456         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 457         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 458
 459         /* CSR BlueCore Bluetooth Sniffer */
 460         { USB_DEVICE(0x0a12, 0x0002),
 461           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 462
 463         /* Frontline ComProbe Bluetooth Sniffer */
 464         { USB_DEVICE(0x16d3, 0x0002),
 465           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 466
 467         /* Marvell Bluetooth devices */
 468         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 469         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 470         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 471
 472         /* Intel Bluetooth devices */
 473         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
 474         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
 475         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
 476         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
 477         { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
 478         { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
 479         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 480         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
 481                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 482                                                      BTUSB_INTEL_BROKEN_INITIAL_NCMD |
 483                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 484         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
 485                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 486                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 487         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
 488         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
 489                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 490         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
 491
 492         /* Other Intel Bluetooth devices */
 493         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 494           .driver_info = BTUSB_IGNORE },
 495
 496         /* Realtek 8821CE Bluetooth devices */
 497         { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
 498                                                      BTUSB_WIDEBAND_SPEECH },
 499
 500         /* Realtek 8822CE Bluetooth devices */
 501         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 502                                                      BTUSB_WIDEBAND_SPEECH },
 503         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 504                                                      BTUSB_WIDEBAND_SPEECH },
 505
 506         /* Realtek 8822CU Bluetooth devices */
 507         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 508                                                      BTUSB_WIDEBAND_SPEECH },
 509
 510         /* Realtek 8852AE Bluetooth devices */
 511         { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
 512                                                      BTUSB_WIDEBAND_SPEECH },
 513         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 514                                                      BTUSB_WIDEBAND_SPEECH },
 515         { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
 516                                                      BTUSB_WIDEBAND_SPEECH },
 517         { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
 518                                                      BTUSB_WIDEBAND_SPEECH },
 519         { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
 520                                                      BTUSB_WIDEBAND_SPEECH },
 521         { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
 522                                                      BTUSB_WIDEBAND_SPEECH },
 523         { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
 524                                                      BTUSB_WIDEBAND_SPEECH },
 525
 526         /* Realtek 8852CE Bluetooth devices */
 527         { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
 528                                                      BTUSB_WIDEBAND_SPEECH },
 529         { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
 530                                                      BTUSB_WIDEBAND_SPEECH },
 531         { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
 532                                                      BTUSB_WIDEBAND_SPEECH },
 533         { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
 534                                                      BTUSB_WIDEBAND_SPEECH },
 535         { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
 536                                                      BTUSB_WIDEBAND_SPEECH },
 537         { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
 538                                                      BTUSB_WIDEBAND_SPEECH },
 539
 540         /* Realtek 8852BE Bluetooth devices */
 541         { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
 542                                                      BTUSB_WIDEBAND_SPEECH },
 543
 544         /* Realtek Bluetooth devices */
 545         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 546           .driver_info = BTUSB_REALTEK },
 547
 548         /* MediaTek Bluetooth devices */
 549         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 550           .driver_info = BTUSB_MEDIATEK |
 551                          BTUSB_WIDEBAND_SPEECH |
 552                          BTUSB_VALID_LE_STATES },
 553
 554         /* Additional MediaTek MT7615E Bluetooth devices */
 555         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 556
 557         /* Additional MediaTek MT7663 Bluetooth devices */
 558         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 559                                                      BTUSB_WIDEBAND_SPEECH |
 560                                                      BTUSB_VALID_LE_STATES },
 561
 562         /* Additional MediaTek MT7668 Bluetooth devices */
 563         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 564                                                      BTUSB_WIDEBAND_SPEECH |
 565                                                      BTUSB_VALID_LE_STATES },
 566
 567         /* Additional MediaTek MT7921 Bluetooth devices */
 568         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 569                                                      BTUSB_WIDEBAND_SPEECH |
 570                                                      BTUSB_VALID_LE_STATES },
 571         { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
 572                                                      BTUSB_WIDEBAND_SPEECH |
 573                                                      BTUSB_VALID_LE_STATES },
 574         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 575                                                      BTUSB_WIDEBAND_SPEECH |
 576                                                      BTUSB_VALID_LE_STATES },
 577         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 578                                                      BTUSB_WIDEBAND_SPEECH |
 579                                                      BTUSB_VALID_LE_STATES },
 580         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 581                                                      BTUSB_WIDEBAND_SPEECH |
 582                                                      BTUSB_VALID_LE_STATES },
 583         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 584                                                      BTUSB_WIDEBAND_SPEECH |
 585                                                      BTUSB_VALID_LE_STATES },
 586         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 587                                                      BTUSB_WIDEBAND_SPEECH |
 588                                                      BTUSB_VALID_LE_STATES },
 589         { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
 590                                                      BTUSB_WIDEBAND_SPEECH |
 591                                                      BTUSB_VALID_LE_STATES },
 592         { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
 593                                                      BTUSB_WIDEBAND_SPEECH |
 594                                                      BTUSB_VALID_LE_STATES },
 595         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 596                                                      BTUSB_WIDEBAND_SPEECH |
 597                                                      BTUSB_VALID_LE_STATES },
 598         { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
 599                                                      BTUSB_WIDEBAND_SPEECH |
 600                                                      BTUSB_VALID_LE_STATES },
 601
 602         /* MediaTek MT7922A Bluetooth devices */
 603         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 604                                                      BTUSB_WIDEBAND_SPEECH |
 605                                                      BTUSB_VALID_LE_STATES },
 606         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 607                                                      BTUSB_WIDEBAND_SPEECH |
 608                                                      BTUSB_VALID_LE_STATES },
 609         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 610                                                      BTUSB_WIDEBAND_SPEECH |
 611                                                      BTUSB_VALID_LE_STATES },
 612         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 613                                                      BTUSB_WIDEBAND_SPEECH |
 614                                                      BTUSB_VALID_LE_STATES },
 615         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 616                                                      BTUSB_WIDEBAND_SPEECH |
 617                                                      BTUSB_VALID_LE_STATES },
 618
 619         /* Additional Realtek 8723AE Bluetooth devices */
 620         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 621         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 622
 623         /* Additional Realtek 8723BE Bluetooth devices */
 624         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 625         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 626         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 627         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 628         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 629         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 630         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 631
 632         /* Additional Realtek 8723BU Bluetooth devices */
 633         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 634
 635         /* Additional Realtek 8723DE Bluetooth devices */
 636         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 637         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 638
 639         /* Additional Realtek 8761BUV Bluetooth devices */
 640         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 641                                                      BTUSB_WIDEBAND_SPEECH },
 642         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 643                                                      BTUSB_WIDEBAND_SPEECH },
 644         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 645                                                      BTUSB_WIDEBAND_SPEECH },
 646         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 647                                                      BTUSB_WIDEBAND_SPEECH },
 648         { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
 649                                                      BTUSB_WIDEBAND_SPEECH },
 650         { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 651                                                      BTUSB_WIDEBAND_SPEECH },
 652
 653         /* Additional Realtek 8821AE Bluetooth devices */
 654         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 655         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 656         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 657         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 658         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 659
 660         /* Additional Realtek 8822BE Bluetooth devices */
 661         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 662         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 663
 664         /* Additional Realtek 8822CE Bluetooth devices */
 665         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 666                                                      BTUSB_WIDEBAND_SPEECH },
 667         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 668                                                      BTUSB_WIDEBAND_SPEECH },
 669         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 670                                                      BTUSB_WIDEBAND_SPEECH },
 671         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 672                                                      BTUSB_WIDEBAND_SPEECH },
 673         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 674                                                      BTUSB_WIDEBAND_SPEECH },
 675         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 676                                                      BTUSB_WIDEBAND_SPEECH },
 677         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 678                                                      BTUSB_WIDEBAND_SPEECH },
 679         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 680                                                      BTUSB_WIDEBAND_SPEECH },
 681         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 682                                                      BTUSB_WIDEBAND_SPEECH },
 683         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 684                                                      BTUSB_WIDEBAND_SPEECH },
 685         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 686                                                      BTUSB_WIDEBAND_SPEECH },
 687
 688         /* Actions Semiconductor ATS2851 based devices */
 689         { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
 690
 691         /* Silicon Wave based devices */
 692         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 693
 694         { }     /* Terminating entry */
 695 };
 696
 697 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 698  * this is a problem with the platform (likely shutting off all power) not with
 699  * the module itself. So we use a DMI list to match known broken platforms.
 700  */
 701 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 702         {
 703                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 704                 .matches = {
 705                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 706                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 707                 },
 708         },
 709         {
 710                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 711                 .matches = {
 712                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 713                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 714                 },
 715         },
 716         {
 717                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 718                 .matches = {
 719                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 720                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 721                 },
 722         },
 723         {}
 724 };
 725
 726 #define BTUSB_MAX_ISOC_FRAMES   10
 727
 728 #define BTUSB_INTR_RUNNING      0
 729 #define BTUSB_BULK_RUNNING      1
 730 #define BTUSB_ISOC_RUNNING      2
 731 #define BTUSB_SUSPENDING        3
 732 #define BTUSB_DID_ISO_RESUME    4
 733 #define BTUSB_BOOTLOADER        5
 734 #define BTUSB_DOWNLOADING       6
 735 #define BTUSB_FIRMWARE_LOADED   7
 736 #define BTUSB_FIRMWARE_FAILED   8
 737 #define BTUSB_BOOTING           9
 738 #define BTUSB_DIAG_RUNNING      10
 739 #define BTUSB_OOB_WAKE_ENABLED  11
 740 #define BTUSB_HW_RESET_ACTIVE   12
 741 #define BTUSB_TX_WAIT_VND_EVT   13
 742 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 743 #define BTUSB_USE_ALT3_FOR_WBS  15
 744 #define BTUSB_ALT6_CONTINUOUS_TX        16
 745
 746 struct btusb_data {
 747         struct hci_dev       *hdev;
 748         struct usb_device    *udev;
 749         struct usb_interface *intf;
 750         struct usb_interface *isoc;
 751         struct usb_interface *diag;
 752         unsigned isoc_ifnum;
 753
 754         unsigned long flags;
 755
 756         bool poll_sync;
 757         int intr_interval;
 758         struct work_struct  work;
 759         struct work_struct  waker;
 760         struct delayed_work rx_work;
 761
 762         struct sk_buff_head acl_q;
 763
 764         struct usb_anchor deferred;
 765         struct usb_anchor tx_anchor;
 766         int tx_in_flight;
 767         spinlock_t txlock;
 768
 769         struct usb_anchor intr_anchor;
 770         struct usb_anchor bulk_anchor;
 771         struct usb_anchor isoc_anchor;
 772         struct usb_anchor diag_anchor;
 773         struct usb_anchor ctrl_anchor;
 774         spinlock_t rxlock;
 775
 776         struct sk_buff *evt_skb;
 777         struct sk_buff *acl_skb;
 778         struct sk_buff *sco_skb;
 779
 780         struct usb_endpoint_descriptor *intr_ep;
 781         struct usb_endpoint_descriptor *bulk_tx_ep;
 782         struct usb_endpoint_descriptor *bulk_rx_ep;
 783         struct usb_endpoint_descriptor *isoc_tx_ep;
 784         struct usb_endpoint_descriptor *isoc_rx_ep;
 785         struct usb_endpoint_descriptor *diag_tx_ep;
 786         struct usb_endpoint_descriptor *diag_rx_ep;
 787
 788         struct gpio_desc *reset_gpio;
 789
 790         __u8 cmdreq_type;
 791         __u8 cmdreq;
 792
 793         unsigned int sco_num;
 794         unsigned int air_mode;
 795         bool usb_alt6_packet_flow;
 796         int isoc_altsetting;
 797         int suspend_count;
 798
 799         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 800         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 801         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 802
 803         int (*setup_on_usb)(struct hci_dev *hdev);
 804
 805         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 806         unsigned cmd_timeout_cnt;
 807 };
 808
 809 static void btusb_reset(struct hci_dev *hdev)
 810 {
 811         struct btusb_data *data;
 812         int err;
 813
 814         if (hdev->reset) {
 815                 hdev->reset(hdev);
 816                 return;
 817         }
 818
 819         data = hci_get_drvdata(hdev);
 820         /* This is not an unbalanced PM reference since the device will reset */
 821         err = usb_autopm_get_interface(data->intf);
 822         if (err) {
 823                 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
 824                 return;
 825         }
 826
 827         bt_dev_err(hdev, "Resetting usb device.");
 828         usb_queue_reset_device(data->intf);
 829 }
 830
 831 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 832 {
 833         struct btusb_data *data = hci_get_drvdata(hdev);
 834         struct gpio_desc *reset_gpio = data->reset_gpio;
 835
 836         if (++data->cmd_timeout_cnt < 5)
 837                 return;
 838
 839         if (!reset_gpio) {
 840                 btusb_reset(hdev);
 841                 return;
 842         }
 843
 844         /*
 845          * Toggle the hard reset line if the platform provides one. The reset
 846          * is going to yank the device off the USB and then replug. So doing
 847          * once is enough. The cleanup is handled correctly on the way out
 848          * (standard USB disconnect), and the new device is detected cleanly
 849          * and bound to the driver again like it should be.
 850          */
 851         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 852                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 853                 return;
 854         }
 855
 856         bt_dev_err(hdev, "Initiating HW reset via gpio");
 857         gpiod_set_value_cansleep(reset_gpio, 1);
 858         msleep(100);
 859         gpiod_set_value_cansleep(reset_gpio, 0);
 860 }
 861
 862 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 863 {
 864         struct btusb_data *data = hci_get_drvdata(hdev);
 865         struct gpio_desc *reset_gpio = data->reset_gpio;
 866
 867         if (++data->cmd_timeout_cnt < 5)
 868                 return;
 869
 870         if (!reset_gpio) {
 871                 btusb_reset(hdev);
 872                 return;
 873         }
 874
 875         /* Toggle the hard reset line. The Realtek device is going to
 876          * yank itself off the USB and then replug. The cleanup is handled
 877          * correctly on the way out (standard USB disconnect), and the new
 878          * device is detected cleanly and bound to the driver again like
 879          * it should be.
 880          */
 881         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 882                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 883                 return;
 884         }
 885
 886         bt_dev_err(hdev, "Reset Realtek device via gpio");
 887         gpiod_set_value_cansleep(reset_gpio, 1);
 888         msleep(200);
 889         gpiod_set_value_cansleep(reset_gpio, 0);
 890 }
 891
 892 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 893 {
 894         struct btusb_data *data = hci_get_drvdata(hdev);
 895         struct gpio_desc *reset_gpio = data->reset_gpio;
 896
 897         if (++data->cmd_timeout_cnt < 5)
 898                 return;
 899
 900         if (reset_gpio) {
 901                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
 902
 903                 /* Toggle the hard reset line. The qca bt device is going to
 904                  * yank itself off the USB and then replug. The cleanup is handled
 905                  * correctly on the way out (standard USB disconnect), and the new
 906                  * device is detected cleanly and bound to the driver again like
 907                  * it should be.
 908                  */
 909                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 910                         bt_dev_err(hdev, "last reset failed? Not resetting again");
 911                         return;
 912                 }
 913
 914                 gpiod_set_value_cansleep(reset_gpio, 0);
 915                 msleep(200);
 916                 gpiod_set_value_cansleep(reset_gpio, 1);
 917
 918                 return;
 919         }
 920
 921         btusb_reset(hdev);
 922 }
 923
 924 static inline void btusb_free_frags(struct btusb_data *data)
 925 {
 926         unsigned long flags;
 927
 928         spin_lock_irqsave(&data->rxlock, flags);
 929
 930         dev_kfree_skb_irq(data->evt_skb);
 931         data->evt_skb = NULL;
 932
 933         dev_kfree_skb_irq(data->acl_skb);
 934         data->acl_skb = NULL;
 935
 936         dev_kfree_skb_irq(data->sco_skb);
 937         data->sco_skb = NULL;
 938
 939         spin_unlock_irqrestore(&data->rxlock, flags);
 940 }
 941
 942 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
 943 {
 944         if (data->intr_interval) {
 945                 /* Trigger dequeue immediatelly if an event is received */
 946                 schedule_delayed_work(&data->rx_work, 0);
 947         }
 948
 949         return data->recv_event(data->hdev, skb);
 950 }
 951
 952 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 953 {
 954         struct sk_buff *skb;
 955         unsigned long flags;
 956         int err = 0;
 957
 958         spin_lock_irqsave(&data->rxlock, flags);
 959         skb = data->evt_skb;
 960
 961         while (count) {
 962                 int len;
 963
 964                 if (!skb) {
 965                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 966                         if (!skb) {
 967                                 err = -ENOMEM;
 968                                 break;
 969                         }
 970
 971                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 972                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 973                 }
 974
 975                 len = min_t(uint, hci_skb_expect(skb), count);
 976                 skb_put_data(skb, buffer, len);
 977
 978                 count -= len;
 979                 buffer += len;
 980                 hci_skb_expect(skb) -= len;
 981
 982                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 983                         /* Complete event header */
 984                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 985
 986                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 987                                 kfree_skb(skb);
 988                                 skb = NULL;
 989
 990                                 err = -EILSEQ;
 991                                 break;
 992                         }
 993                 }
 994
 995                 if (!hci_skb_expect(skb)) {
 996                         /* Complete frame */
 997                         btusb_recv_event(data, skb);
 998                         skb = NULL;
 999                 }
1000         }
1001
1002         data->evt_skb = skb;
1003         spin_unlock_irqrestore(&data->rxlock, flags);
1004
1005         return err;
1006 }
1007
1008 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1009 {
1010         /* Only queue ACL packet if intr_interval is set as it means
1011          * force_poll_sync has been enabled.
1012          */
1013         if (!data->intr_interval)
1014                 return data->recv_acl(data->hdev, skb);
1015
1016         skb_queue_tail(&data->acl_q, skb);
1017         schedule_delayed_work(&data->rx_work, data->intr_interval);
1018
1019         return 0;
1020 }
1021
1022 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1023 {
1024         struct sk_buff *skb;
1025         unsigned long flags;
1026         int err = 0;
1027
1028         spin_lock_irqsave(&data->rxlock, flags);
1029         skb = data->acl_skb;
1030
1031         while (count) {
1032                 int len;
1033
1034                 if (!skb) {
1035                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1036                         if (!skb) {
1037                                 err = -ENOMEM;
1038                                 break;
1039                         }
1040
1041                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1042                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1043                 }
1044
1045                 len = min_t(uint, hci_skb_expect(skb), count);
1046                 skb_put_data(skb, buffer, len);
1047
1048                 count -= len;
1049                 buffer += len;
1050                 hci_skb_expect(skb) -= len;
1051
1052                 if (skb->len == HCI_ACL_HDR_SIZE) {
1053                         __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle);
1054                         __le16 dlen = hci_acl_hdr(skb)->dlen;
1055                         __u8 type;
1056
1057                         /* Complete ACL header */
1058                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
1059
1060                         /* Detect if ISO packet has been sent over bulk */
1061                         if (hci_conn_num(data->hdev, ISO_LINK)) {
1062                                 type = hci_conn_lookup_type(data->hdev,
1063                                                             hci_handle(handle));
1064                                 if (type == ISO_LINK)
1065                                         hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
1066                         }
1067
1068                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1069                                 kfree_skb(skb);
1070                                 skb = NULL;
1071
1072                                 err = -EILSEQ;
1073                                 break;
1074                         }
1075                 }
1076
1077                 if (!hci_skb_expect(skb)) {
1078                         /* Complete frame */
1079                         btusb_recv_acl(data, skb);
1080                         skb = NULL;
1081                 }
1082         }
1083
1084         data->acl_skb = skb;
1085         spin_unlock_irqrestore(&data->rxlock, flags);
1086
1087         return err;
1088 }
1089
1090 static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1091                                       struct hci_sco_hdr *hdr)
1092 {
1093         __u16 handle;
1094
1095         if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1096                 // Can't validate, userspace controls everything.
1097                 return true;
1098
1099         /*
1100          * USB isochronous transfers are not designed to be reliable and may
1101          * lose fragments.  When this happens, the next first fragment
1102          * encountered might actually be a continuation fragment.
1103          * Validate the handle to detect it and drop it, or else the upper
1104          * layer will get garbage for a while.
1105          */
1106
1107         handle = hci_handle(__le16_to_cpu(hdr->handle));
1108
1109         switch (hci_conn_lookup_type(hdev, handle)) {
1110         case SCO_LINK:
1111         case ESCO_LINK:
1112                 return true;
1113         default:
1114                 return false;
1115         }
1116 }
1117
1118 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1119 {
1120         struct sk_buff *skb;
1121         unsigned long flags;
1122         int err = 0;
1123
1124         spin_lock_irqsave(&data->rxlock, flags);
1125         skb = data->sco_skb;
1126
1127         while (count) {
1128                 int len;
1129
1130                 if (!skb) {
1131                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1132                         if (!skb) {
1133                                 err = -ENOMEM;
1134                                 break;
1135                         }
1136
1137                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1138                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1139                 }
1140
1141                 len = min_t(uint, hci_skb_expect(skb), count);
1142                 skb_put_data(skb, buffer, len);
1143
1144                 count -= len;
1145                 buffer += len;
1146                 hci_skb_expect(skb) -= len;
1147
1148                 if (skb->len == HCI_SCO_HDR_SIZE) {
1149                         /* Complete SCO header */
1150                         struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1151
1152                         hci_skb_expect(skb) = hdr->dlen;
1153
1154                         if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1155                             !btusb_validate_sco_handle(data->hdev, hdr)) {
1156                                 kfree_skb(skb);
1157                                 skb = NULL;
1158
1159                                 err = -EILSEQ;
1160                                 break;
1161                         }
1162                 }
1163
1164                 if (!hci_skb_expect(skb)) {
1165                         /* Complete frame */
1166                         hci_recv_frame(data->hdev, skb);
1167                         skb = NULL;
1168                 }
1169         }
1170
1171         data->sco_skb = skb;
1172         spin_unlock_irqrestore(&data->rxlock, flags);
1173
1174         return err;
1175 }
1176
1177 static void btusb_intr_complete(struct urb *urb)
1178 {
1179         struct hci_dev *hdev = urb->context;
1180         struct btusb_data *data = hci_get_drvdata(hdev);
1181         int err;
1182
1183         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1184                urb->actual_length);
1185
1186         if (!test_bit(HCI_RUNNING, &hdev->flags))
1187                 return;
1188
1189         if (urb->status == 0) {
1190                 hdev->stat.byte_rx += urb->actual_length;
1191
1192                 if (btusb_recv_intr(data, urb->transfer_buffer,
1193                                     urb->actual_length) < 0) {
1194                         bt_dev_err(hdev, "corrupted event packet");
1195                         hdev->stat.err_rx++;
1196                 }
1197         } else if (urb->status == -ENOENT) {
1198                 /* Avoid suspend failed when usb_kill_urb */
1199                 return;
1200         }
1201
1202         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1203                 return;
1204
1205         usb_mark_last_busy(data->udev);
1206         usb_anchor_urb(urb, &data->intr_anchor);
1207
1208         err = usb_submit_urb(urb, GFP_ATOMIC);
1209         if (err < 0) {
1210                 /* -EPERM: urb is being killed;
1211                  * -ENODEV: device got disconnected
1212                  */
1213                 if (err != -EPERM && err != -ENODEV)
1214                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1215                                    urb, -err);
1216                 if (err != -EPERM)
1217                         hci_cmd_sync_cancel(hdev, -err);
1218                 usb_unanchor_urb(urb);
1219         }
1220 }
1221
1222 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1223 {
1224         struct btusb_data *data = hci_get_drvdata(hdev);
1225         struct urb *urb;
1226         unsigned char *buf;
1227         unsigned int pipe;
1228         int err, size;
1229
1230         BT_DBG("%s", hdev->name);
1231
1232         if (!data->intr_ep)
1233                 return -ENODEV;
1234
1235         urb = usb_alloc_urb(0, mem_flags);
1236         if (!urb)
1237                 return -ENOMEM;
1238
1239         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1240
1241         buf = kmalloc(size, mem_flags);
1242         if (!buf) {
1243                 usb_free_urb(urb);
1244                 return -ENOMEM;
1245         }
1246
1247         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1248
1249         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1250                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1251
1252         urb->transfer_flags |= URB_FREE_BUFFER;
1253
1254         usb_anchor_urb(urb, &data->intr_anchor);
1255
1256         err = usb_submit_urb(urb, mem_flags);
1257         if (err < 0) {
1258                 if (err != -EPERM && err != -ENODEV)
1259                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1260                                    urb, -err);
1261                 if (err != -EPERM)
1262                         hci_cmd_sync_cancel(hdev, -err);
1263                 usb_unanchor_urb(urb);
1264         }
1265
1266         /* Only initialize intr_interval if URB poll sync is enabled */
1267         if (!data->poll_sync)
1268                 goto done;
1269
1270         /* The units are frames (milliseconds) for full and low speed devices,
1271          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1272          * devices.
1273          *
1274          * This is done once on open/resume so it shouldn't change even if
1275          * force_poll_sync changes.
1276          */
1277         switch (urb->dev->speed) {
1278         case USB_SPEED_SUPER_PLUS:
1279         case USB_SPEED_SUPER:   /* units are 125us */
1280                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1281                 break;
1282         default:
1283                 data->intr_interval = msecs_to_jiffies(urb->interval);
1284                 break;
1285         }
1286
1287 done:
1288         usb_free_urb(urb);
1289
1290         return err;
1291 }
1292
1293 static void btusb_bulk_complete(struct urb *urb)
1294 {
1295         struct hci_dev *hdev = urb->context;
1296         struct btusb_data *data = hci_get_drvdata(hdev);
1297         int err;
1298
1299         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1300                urb->actual_length);
1301
1302         if (!test_bit(HCI_RUNNING, &hdev->flags))
1303                 return;
1304
1305         if (urb->status == 0) {
1306                 hdev->stat.byte_rx += urb->actual_length;
1307
1308                 if (data->recv_bulk(data, urb->transfer_buffer,
1309                                     urb->actual_length) < 0) {
1310                         bt_dev_err(hdev, "corrupted ACL packet");
1311                         hdev->stat.err_rx++;
1312                 }
1313         } else if (urb->status == -ENOENT) {
1314                 /* Avoid suspend failed when usb_kill_urb */
1315                 return;
1316         }
1317
1318         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1319                 return;
1320
1321         usb_anchor_urb(urb, &data->bulk_anchor);
1322         usb_mark_last_busy(data->udev);
1323
1324         err = usb_submit_urb(urb, GFP_ATOMIC);
1325         if (err < 0) {
1326                 /* -EPERM: urb is being killed;
1327                  * -ENODEV: device got disconnected
1328                  */
1329                 if (err != -EPERM && err != -ENODEV)
1330                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1331                                    urb, -err);
1332                 usb_unanchor_urb(urb);
1333         }
1334 }
1335
1336 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1337 {
1338         struct btusb_data *data = hci_get_drvdata(hdev);
1339         struct urb *urb;
1340         unsigned char *buf;
1341         unsigned int pipe;
1342         int err, size = HCI_MAX_FRAME_SIZE;
1343
1344         BT_DBG("%s", hdev->name);
1345
1346         if (!data->bulk_rx_ep)
1347                 return -ENODEV;
1348
1349         urb = usb_alloc_urb(0, mem_flags);
1350         if (!urb)
1351                 return -ENOMEM;
1352
1353         buf = kmalloc(size, mem_flags);
1354         if (!buf) {
1355                 usb_free_urb(urb);
1356                 return -ENOMEM;
1357         }
1358
1359         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1360
1361         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1362                           btusb_bulk_complete, hdev);
1363
1364         urb->transfer_flags |= URB_FREE_BUFFER;
1365
1366         usb_mark_last_busy(data->udev);
1367         usb_anchor_urb(urb, &data->bulk_anchor);
1368
1369         err = usb_submit_urb(urb, mem_flags);
1370         if (err < 0) {
1371                 if (err != -EPERM && err != -ENODEV)
1372                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1373                                    urb, -err);
1374                 usb_unanchor_urb(urb);
1375         }
1376
1377         usb_free_urb(urb);
1378
1379         return err;
1380 }
1381
1382 static void btusb_isoc_complete(struct urb *urb)
1383 {
1384         struct hci_dev *hdev = urb->context;
1385         struct btusb_data *data = hci_get_drvdata(hdev);
1386         int i, err;
1387
1388         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1389                urb->actual_length);
1390
1391         if (!test_bit(HCI_RUNNING, &hdev->flags))
1392                 return;
1393
1394         if (urb->status == 0) {
1395                 for (i = 0; i < urb->number_of_packets; i++) {
1396                         unsigned int offset = urb->iso_frame_desc[i].offset;
1397                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1398
1399                         if (urb->iso_frame_desc[i].status)
1400                                 continue;
1401
1402                         hdev->stat.byte_rx += length;
1403
1404                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1405                                             length) < 0) {
1406                                 bt_dev_err(hdev, "corrupted SCO packet");
1407                                 hdev->stat.err_rx++;
1408                         }
1409                 }
1410         } else if (urb->status == -ENOENT) {
1411                 /* Avoid suspend failed when usb_kill_urb */
1412                 return;
1413         }
1414
1415         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1416                 return;
1417
1418         usb_anchor_urb(urb, &data->isoc_anchor);
1419
1420         err = usb_submit_urb(urb, GFP_ATOMIC);
1421         if (err < 0) {
1422                 /* -EPERM: urb is being killed;
1423                  * -ENODEV: device got disconnected
1424                  */
1425                 if (err != -EPERM && err != -ENODEV)
1426                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1427                                    urb, -err);
1428                 usb_unanchor_urb(urb);
1429         }
1430 }
1431
1432 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1433                                                int mtu, struct btusb_data *data)
1434 {
1435         int i = 0, offset = 0;
1436         unsigned int interval;
1437
1438         BT_DBG("len %d mtu %d", len, mtu);
1439
1440         /* For mSBC ALT 6 settings some chips need to transmit the data
1441          * continuously without the zero length of USB packets.
1442          */
1443         if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1444                 goto ignore_usb_alt6_packet_flow;
1445
1446         /* For mSBC ALT 6 setting the host will send the packet at continuous
1447          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1448          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1449          * To maintain the rate we send 63bytes of usb packets alternatively for
1450          * 7ms and 8ms to maintain the rate as 7.5ms.
1451          */
1452         if (data->usb_alt6_packet_flow) {
1453                 interval = 7;
1454                 data->usb_alt6_packet_flow = false;
1455         } else {
1456                 interval = 6;
1457                 data->usb_alt6_packet_flow = true;
1458         }
1459
1460         for (i = 0; i < interval; i++) {
1461                 urb->iso_frame_desc[i].offset = offset;
1462                 urb->iso_frame_desc[i].length = offset;
1463         }
1464
1465 ignore_usb_alt6_packet_flow:
1466         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1467                 urb->iso_frame_desc[i].offset = offset;
1468                 urb->iso_frame_desc[i].length = len;
1469                 i++;
1470         }
1471
1472         urb->number_of_packets = i;
1473 }
1474
1475 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1476 {
1477         int i, offset = 0;
1478
1479         BT_DBG("len %d mtu %d", len, mtu);
1480
1481         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1482                                         i++, offset += mtu, len -= mtu) {
1483                 urb->iso_frame_desc[i].offset = offset;
1484                 urb->iso_frame_desc[i].length = mtu;
1485         }
1486
1487         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1488                 urb->iso_frame_desc[i].offset = offset;
1489                 urb->iso_frame_desc[i].length = len;
1490                 i++;
1491         }
1492
1493         urb->number_of_packets = i;
1494 }
1495
1496 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1497 {
1498         struct btusb_data *data = hci_get_drvdata(hdev);
1499         struct urb *urb;
1500         unsigned char *buf;
1501         unsigned int pipe;
1502         int err, size;
1503
1504         BT_DBG("%s", hdev->name);
1505
1506         if (!data->isoc_rx_ep)
1507                 return -ENODEV;
1508
1509         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1510         if (!urb)
1511                 return -ENOMEM;
1512
1513         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1514                                                 BTUSB_MAX_ISOC_FRAMES;
1515
1516         buf = kmalloc(size, mem_flags);
1517         if (!buf) {
1518                 usb_free_urb(urb);
1519                 return -ENOMEM;
1520         }
1521
1522         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1523
1524         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1525                          hdev, data->isoc_rx_ep->bInterval);
1526
1527         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1528
1529         __fill_isoc_descriptor(urb, size,
1530                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1531
1532         usb_anchor_urb(urb, &data->isoc_anchor);
1533
1534         err = usb_submit_urb(urb, mem_flags);
1535         if (err < 0) {
1536                 if (err != -EPERM && err != -ENODEV)
1537                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1538                                    urb, -err);
1539                 usb_unanchor_urb(urb);
1540         }
1541
1542         usb_free_urb(urb);
1543
1544         return err;
1545 }
1546
1547 static void btusb_diag_complete(struct urb *urb)
1548 {
1549         struct hci_dev *hdev = urb->context;
1550         struct btusb_data *data = hci_get_drvdata(hdev);
1551         int err;
1552
1553         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1554                urb->actual_length);
1555
1556         if (urb->status == 0) {
1557                 struct sk_buff *skb;
1558
1559                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1560                 if (skb) {
1561                         skb_put_data(skb, urb->transfer_buffer,
1562                                      urb->actual_length);
1563                         hci_recv_diag(hdev, skb);
1564                 }
1565         } else if (urb->status == -ENOENT) {
1566                 /* Avoid suspend failed when usb_kill_urb */
1567                 return;
1568         }
1569
1570         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1571                 return;
1572
1573         usb_anchor_urb(urb, &data->diag_anchor);
1574         usb_mark_last_busy(data->udev);
1575
1576         err = usb_submit_urb(urb, GFP_ATOMIC);
1577         if (err < 0) {
1578                 /* -EPERM: urb is being killed;
1579                  * -ENODEV: device got disconnected
1580                  */
1581                 if (err != -EPERM && err != -ENODEV)
1582                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1583                                    urb, -err);
1584                 usb_unanchor_urb(urb);
1585         }
1586 }
1587
1588 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1589 {
1590         struct btusb_data *data = hci_get_drvdata(hdev);
1591         struct urb *urb;
1592         unsigned char *buf;
1593         unsigned int pipe;
1594         int err, size = HCI_MAX_FRAME_SIZE;
1595
1596         BT_DBG("%s", hdev->name);
1597
1598         if (!data->diag_rx_ep)
1599                 return -ENODEV;
1600
1601         urb = usb_alloc_urb(0, mem_flags);
1602         if (!urb)
1603                 return -ENOMEM;
1604
1605         buf = kmalloc(size, mem_flags);
1606         if (!buf) {
1607                 usb_free_urb(urb);
1608                 return -ENOMEM;
1609         }
1610
1611         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1612
1613         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1614                           btusb_diag_complete, hdev);
1615
1616         urb->transfer_flags |= URB_FREE_BUFFER;
1617
1618         usb_mark_last_busy(data->udev);
1619         usb_anchor_urb(urb, &data->diag_anchor);
1620
1621         err = usb_submit_urb(urb, mem_flags);
1622         if (err < 0) {
1623                 if (err != -EPERM && err != -ENODEV)
1624                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1625                                    urb, -err);
1626                 usb_unanchor_urb(urb);
1627         }
1628
1629         usb_free_urb(urb);
1630
1631         return err;
1632 }
1633
1634 static void btusb_tx_complete(struct urb *urb)
1635 {
1636         struct sk_buff *skb = urb->context;
1637         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1638         struct btusb_data *data = hci_get_drvdata(hdev);
1639         unsigned long flags;
1640
1641         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1642                urb->actual_length);
1643
1644         if (!test_bit(HCI_RUNNING, &hdev->flags))
1645                 goto done;
1646
1647         if (!urb->status) {
1648                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1649         } else {
1650                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1651                         hci_cmd_sync_cancel(hdev, -urb->status);
1652                 hdev->stat.err_tx++;
1653         }
1654
1655 done:
1656         spin_lock_irqsave(&data->txlock, flags);
1657         data->tx_in_flight--;
1658         spin_unlock_irqrestore(&data->txlock, flags);
1659
1660         kfree(urb->setup_packet);
1661
1662         kfree_skb(skb);
1663 }
1664
1665 static void btusb_isoc_tx_complete(struct urb *urb)
1666 {
1667         struct sk_buff *skb = urb->context;
1668         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1669
1670         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1671                urb->actual_length);
1672
1673         if (!test_bit(HCI_RUNNING, &hdev->flags))
1674                 goto done;
1675
1676         if (!urb->status)
1677                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1678         else
1679                 hdev->stat.err_tx++;
1680
1681 done:
1682         kfree(urb->setup_packet);
1683
1684         kfree_skb(skb);
1685 }
1686
1687 static int btusb_open(struct hci_dev *hdev)
1688 {
1689         struct btusb_data *data = hci_get_drvdata(hdev);
1690         int err;
1691
1692         BT_DBG("%s", hdev->name);
1693
1694         err = usb_autopm_get_interface(data->intf);
1695         if (err < 0)
1696                 return err;
1697
1698         /* Patching USB firmware files prior to starting any URBs of HCI path
1699          * It is more safe to use USB bulk channel for downloading USB patch
1700          */
1701         if (data->setup_on_usb) {
1702                 err = data->setup_on_usb(hdev);
1703                 if (err < 0)
1704                         goto setup_fail;
1705         }
1706
1707         data->intf->needs_remote_wakeup = 1;
1708
1709         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1710                 goto done;
1711
1712         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1713         if (err < 0)
1714                 goto failed;
1715
1716         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1717         if (err < 0) {
1718                 usb_kill_anchored_urbs(&data->intr_anchor);
1719                 goto failed;
1720         }
1721
1722         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1723         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1724
1725         if (data->diag) {
1726                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1727                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1728         }
1729
1730 done:
1731         usb_autopm_put_interface(data->intf);
1732         return 0;
1733
1734 failed:
1735         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1736 setup_fail:
1737         usb_autopm_put_interface(data->intf);
1738         return err;
1739 }
1740
1741 static void btusb_stop_traffic(struct btusb_data *data)
1742 {
1743         usb_kill_anchored_urbs(&data->intr_anchor);
1744         usb_kill_anchored_urbs(&data->bulk_anchor);
1745         usb_kill_anchored_urbs(&data->isoc_anchor);
1746         usb_kill_anchored_urbs(&data->diag_anchor);
1747         usb_kill_anchored_urbs(&data->ctrl_anchor);
1748 }
1749
1750 static int btusb_close(struct hci_dev *hdev)
1751 {
1752         struct btusb_data *data = hci_get_drvdata(hdev);
1753         int err;
1754
1755         BT_DBG("%s", hdev->name);
1756
1757         cancel_delayed_work(&data->rx_work);
1758         cancel_work_sync(&data->work);
1759         cancel_work_sync(&data->waker);
1760
1761         skb_queue_purge(&data->acl_q);
1762
1763         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1764         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1765         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1766         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1767
1768         btusb_stop_traffic(data);
1769         btusb_free_frags(data);
1770
1771         err = usb_autopm_get_interface(data->intf);
1772         if (err < 0)
1773                 goto failed;
1774
1775         data->intf->needs_remote_wakeup = 0;
1776
1777         /* Enable remote wake up for auto-suspend */
1778         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1779                 data->intf->needs_remote_wakeup = 1;
1780
1781         usb_autopm_put_interface(data->intf);
1782
1783 failed:
1784         usb_scuttle_anchored_urbs(&data->deferred);
1785         return 0;
1786 }
1787
1788 static int btusb_flush(struct hci_dev *hdev)
1789 {
1790         struct btusb_data *data = hci_get_drvdata(hdev);
1791
1792         BT_DBG("%s", hdev->name);
1793
1794         cancel_delayed_work(&data->rx_work);
1795
1796         skb_queue_purge(&data->acl_q);
1797
1798         usb_kill_anchored_urbs(&data->tx_anchor);
1799         btusb_free_frags(data);
1800
1801         return 0;
1802 }
1803
1804 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1805 {
1806         struct btusb_data *data = hci_get_drvdata(hdev);
1807         struct usb_ctrlrequest *dr;
1808         struct urb *urb;
1809         unsigned int pipe;
1810
1811         urb = usb_alloc_urb(0, GFP_KERNEL);
1812         if (!urb)
1813                 return ERR_PTR(-ENOMEM);
1814
1815         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1816         if (!dr) {
1817                 usb_free_urb(urb);
1818                 return ERR_PTR(-ENOMEM);
1819         }
1820
1821         dr->bRequestType = data->cmdreq_type;
1822         dr->bRequest     = data->cmdreq;
1823         dr->wIndex       = 0;
1824         dr->wValue       = 0;
1825         dr->wLength      = __cpu_to_le16(skb->len);
1826
1827         pipe = usb_sndctrlpipe(data->udev, 0x00);
1828
1829         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1830                              skb->data, skb->len, btusb_tx_complete, skb);
1831
1832         skb->dev = (void *)hdev;
1833
1834         return urb;
1835 }
1836
1837 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1838 {
1839         struct btusb_data *data = hci_get_drvdata(hdev);
1840         struct urb *urb;
1841         unsigned int pipe;
1842
1843         if (!data->bulk_tx_ep)
1844                 return ERR_PTR(-ENODEV);
1845
1846         urb = usb_alloc_urb(0, GFP_KERNEL);
1847         if (!urb)
1848                 return ERR_PTR(-ENOMEM);
1849
1850         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1851
1852         usb_fill_bulk_urb(urb, data->udev, pipe,
1853                           skb->data, skb->len, btusb_tx_complete, skb);
1854
1855         skb->dev = (void *)hdev;
1856
1857         return urb;
1858 }
1859
1860 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1861 {
1862         struct btusb_data *data = hci_get_drvdata(hdev);
1863         struct urb *urb;
1864         unsigned int pipe;
1865
1866         if (!data->isoc_tx_ep)
1867                 return ERR_PTR(-ENODEV);
1868
1869         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1870         if (!urb)
1871                 return ERR_PTR(-ENOMEM);
1872
1873         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1874
1875         usb_fill_int_urb(urb, data->udev, pipe,
1876                          skb->data, skb->len, btusb_isoc_tx_complete,
1877                          skb, data->isoc_tx_ep->bInterval);
1878
1879         urb->transfer_flags  = URB_ISO_ASAP;
1880
1881         if (data->isoc_altsetting == 6)
1882                 __fill_isoc_descriptor_msbc(urb, skb->len,
1883                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1884                                             data);
1885         else
1886                 __fill_isoc_descriptor(urb, skb->len,
1887                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1888         skb->dev = (void *)hdev;
1889
1890         return urb;
1891 }
1892
1893 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1894 {
1895         struct btusb_data *data = hci_get_drvdata(hdev);
1896         int err;
1897
1898         usb_anchor_urb(urb, &data->tx_anchor);
1899
1900         err = usb_submit_urb(urb, GFP_KERNEL);
1901         if (err < 0) {
1902                 if (err != -EPERM && err != -ENODEV)
1903                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1904                                    urb, -err);
1905                 kfree(urb->setup_packet);
1906                 usb_unanchor_urb(urb);
1907         } else {
1908                 usb_mark_last_busy(data->udev);
1909         }
1910
1911         usb_free_urb(urb);
1912         return err;
1913 }
1914
1915 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1916 {
1917         struct btusb_data *data = hci_get_drvdata(hdev);
1918         unsigned long flags;
1919         bool suspending;
1920
1921         spin_lock_irqsave(&data->txlock, flags);
1922         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1923         if (!suspending)
1924                 data->tx_in_flight++;
1925         spin_unlock_irqrestore(&data->txlock, flags);
1926
1927         if (!suspending)
1928                 return submit_tx_urb(hdev, urb);
1929
1930         usb_anchor_urb(urb, &data->deferred);
1931         schedule_work(&data->waker);
1932
1933         usb_free_urb(urb);
1934         return 0;
1935 }
1936
1937 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1938 {
1939         struct urb *urb;
1940
1941         BT_DBG("%s", hdev->name);
1942
1943         switch (hci_skb_pkt_type(skb)) {
1944         case HCI_COMMAND_PKT:
1945                 urb = alloc_ctrl_urb(hdev, skb);
1946                 if (IS_ERR(urb))
1947                         return PTR_ERR(urb);
1948
1949                 hdev->stat.cmd_tx++;
1950                 return submit_or_queue_tx_urb(hdev, urb);
1951
1952         case HCI_ACLDATA_PKT:
1953                 urb = alloc_bulk_urb(hdev, skb);
1954                 if (IS_ERR(urb))
1955                         return PTR_ERR(urb);
1956
1957                 hdev->stat.acl_tx++;
1958                 return submit_or_queue_tx_urb(hdev, urb);
1959
1960         case HCI_SCODATA_PKT:
1961                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1962                         return -ENODEV;
1963
1964                 urb = alloc_isoc_urb(hdev, skb);
1965                 if (IS_ERR(urb))
1966                         return PTR_ERR(urb);
1967
1968                 hdev->stat.sco_tx++;
1969                 return submit_tx_urb(hdev, urb);
1970
1971         case HCI_ISODATA_PKT:
1972                 urb = alloc_bulk_urb(hdev, skb);
1973                 if (IS_ERR(urb))
1974                         return PTR_ERR(urb);
1975
1976                 return submit_or_queue_tx_urb(hdev, urb);
1977         }
1978
1979         return -EILSEQ;
1980 }
1981
1982 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1983 {
1984         struct btusb_data *data = hci_get_drvdata(hdev);
1985
1986         BT_DBG("%s evt %d", hdev->name, evt);
1987
1988         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1989                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1990                 data->air_mode = evt;
1991                 schedule_work(&data->work);
1992         }
1993 }
1994
1995 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1996 {
1997         struct btusb_data *data = hci_get_drvdata(hdev);
1998         struct usb_interface *intf = data->isoc;
1999         struct usb_endpoint_descriptor *ep_desc;
2000         int i, err;
2001
2002         if (!data->isoc)
2003                 return -ENODEV;
2004
2005         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
2006         if (err < 0) {
2007                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
2008                 return err;
2009         }
2010
2011         data->isoc_altsetting = altsetting;
2012
2013         data->isoc_tx_ep = NULL;
2014         data->isoc_rx_ep = NULL;
2015
2016         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2017                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2018
2019                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2020                         data->isoc_tx_ep = ep_desc;
2021                         continue;
2022                 }
2023
2024                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2025                         data->isoc_rx_ep = ep_desc;
2026                         continue;
2027                 }
2028         }
2029
2030         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2031                 bt_dev_err(hdev, "invalid SCO descriptors");
2032                 return -ENODEV;
2033         }
2034
2035         return 0;
2036 }
2037
2038 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2039 {
2040         struct btusb_data *data = hci_get_drvdata(hdev);
2041         int err;
2042
2043         if (data->isoc_altsetting != new_alts) {
2044                 unsigned long flags;
2045
2046                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2047                 usb_kill_anchored_urbs(&data->isoc_anchor);
2048
2049                 /* When isochronous alternate setting needs to be
2050                  * changed, because SCO connection has been added
2051                  * or removed, a packet fragment may be left in the
2052                  * reassembling state. This could lead to wrongly
2053                  * assembled fragments.
2054                  *
2055                  * Clear outstanding fragment when selecting a new
2056                  * alternate setting.
2057                  */
2058                 spin_lock_irqsave(&data->rxlock, flags);
2059                 kfree_skb(data->sco_skb);
2060                 data->sco_skb = NULL;
2061                 spin_unlock_irqrestore(&data->rxlock, flags);
2062
2063                 err = __set_isoc_interface(hdev, new_alts);
2064                 if (err < 0)
2065                         return err;
2066         }
2067
2068         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2069                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2070                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2071                 else
2072                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2073         }
2074
2075         return 0;
2076 }
2077
2078 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2079                                                         int alt)
2080 {
2081         struct usb_interface *intf = data->isoc;
2082         int i;
2083
2084         BT_DBG("Looking for Alt no :%d", alt);
2085
2086         if (!intf)
2087                 return NULL;
2088
2089         for (i = 0; i < intf->num_altsetting; i++) {
2090                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2091                         return &intf->altsetting[i];
2092         }
2093
2094         return NULL;
2095 }
2096
2097 static void btusb_work(struct work_struct *work)
2098 {
2099         struct btusb_data *data = container_of(work, struct btusb_data, work);
2100         struct hci_dev *hdev = data->hdev;
2101         int new_alts = 0;
2102         int err;
2103
2104         if (data->sco_num > 0) {
2105                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2106                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2107                         if (err < 0) {
2108                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2109                                 usb_kill_anchored_urbs(&data->isoc_anchor);
2110                                 return;
2111                         }
2112
2113                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2114                 }
2115
2116                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2117                         if (hdev->voice_setting & 0x0020) {
2118                                 static const int alts[3] = { 2, 4, 5 };
2119
2120                                 new_alts = alts[data->sco_num - 1];
2121                         } else {
2122                                 new_alts = data->sco_num;
2123                         }
2124                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2125                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2126                          * many adapters do not support it.  Alt 1 appears to
2127                          * work for all adapters that do not have alt 6, and
2128                          * which work with WBS at all.  Some devices prefer
2129                          * alt 3 (HCI payload >= 60 Bytes let air packet
2130                          * data satisfy 60 bytes), requiring
2131                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2132                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2133                          */
2134                         if (btusb_find_altsetting(data, 6))
2135                                 new_alts = 6;
2136                         else if (btusb_find_altsetting(data, 3) &&
2137                                  hdev->sco_mtu >= 72 &&
2138                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2139                                 new_alts = 3;
2140                         else
2141                                 new_alts = 1;
2142                 }
2143
2144                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2145                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2146         } else {
2147                 usb_kill_anchored_urbs(&data->isoc_anchor);
2148
2149                 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2150                         __set_isoc_interface(hdev, 0);
2151
2152                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2153                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2154         }
2155 }
2156
2157 static void btusb_waker(struct work_struct *work)
2158 {
2159         struct btusb_data *data = container_of(work, struct btusb_data, waker);
2160         int err;
2161
2162         err = usb_autopm_get_interface(data->intf);
2163         if (err < 0)
2164                 return;
2165
2166         usb_autopm_put_interface(data->intf);
2167 }
2168
2169 static void btusb_rx_work(struct work_struct *work)
2170 {
2171         struct btusb_data *data = container_of(work, struct btusb_data,
2172                                                rx_work.work);
2173         struct sk_buff *skb;
2174
2175         /* Dequeue ACL data received during the interval */
2176         while ((skb = skb_dequeue(&data->acl_q)))
2177                 data->recv_acl(data->hdev, skb);
2178 }
2179
2180 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2181 {
2182         struct sk_buff *skb;
2183         u8 val = 0x00;
2184
2185         BT_DBG("%s", hdev->name);
2186
2187         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2188         if (IS_ERR(skb))
2189                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2190         else
2191                 kfree_skb(skb);
2192
2193         return 0;
2194 }
2195
2196 static int btusb_setup_csr(struct hci_dev *hdev)
2197 {
2198         struct btusb_data *data = hci_get_drvdata(hdev);
2199         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2200         struct hci_rp_read_local_version *rp;
2201         struct sk_buff *skb;
2202         bool is_fake = false;
2203         int ret;
2204
2205         BT_DBG("%s", hdev->name);
2206
2207         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2208                              HCI_INIT_TIMEOUT);
2209         if (IS_ERR(skb)) {
2210                 int err = PTR_ERR(skb);
2211                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2212                 return err;
2213         }
2214
2215         rp = skb_pull_data(skb, sizeof(*rp));
2216         if (!rp) {
2217                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2218                 kfree_skb(skb);
2219                 return -EIO;
2220         }
2221
2222         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2223                     rp->hci_ver, le16_to_cpu(rp->hci_rev));
2224
2225         bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2226                     rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2227                     le16_to_cpu(rp->manufacturer));
2228
2229         /* Detect a wide host of Chinese controllers that aren't CSR.
2230          *
2231          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2232          *
2233          * The main thing they have in common is that these are really popular low-cost
2234          * options that support newer Bluetooth versions but rely on heavy VID/PID
2235          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2236          *
2237          * We detect actual CSR devices by checking that the HCI manufacturer code
2238          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2239          * HCI rev values always match. As they both store the firmware number.
2240          */
2241         if (le16_to_cpu(rp->manufacturer) != 10 ||
2242             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2243                 is_fake = true;
2244
2245         /* Known legit CSR firmware build numbers and their supported BT versions:
2246          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2247          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2248          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2249          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2250          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2251          *
2252          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2253          *      support BT 1.1 only; so it's a dead giveaway when some
2254          *      third-party BT 4.0 dongle reuses it.
2255          */
2256         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2257                  rp->hci_ver > BLUETOOTH_VER_1_1)
2258                 is_fake = true;
2259
2260         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2261                  rp->hci_ver > BLUETOOTH_VER_1_2)
2262                 is_fake = true;
2263
2264         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2265                  rp->hci_ver > BLUETOOTH_VER_2_0)
2266                 is_fake = true;
2267
2268         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2269                  rp->hci_ver > BLUETOOTH_VER_2_1)
2270                 is_fake = true;
2271
2272         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2273                  rp->hci_ver > BLUETOOTH_VER_4_0)
2274                 is_fake = true;
2275
2276         /* Other clones which beat all the above checks */
2277         else if (bcdDevice == 0x0134 &&
2278                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2279                  rp->hci_ver == BLUETOOTH_VER_2_0)
2280                 is_fake = true;
2281
2282         if (is_fake) {
2283                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2284
2285                 /* Generally these clones have big discrepancies between
2286                  * advertised features and what's actually supported.
2287                  * Probably will need to be expanded in the future;
2288                  * without these the controller will lock up.
2289                  */
2290                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2291                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2292                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2293                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2294
2295                 /* Clear the reset quirk since this is not an actual
2296                  * early Bluetooth 1.1 device from CSR.
2297                  */
2298                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2299                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2300
2301                 /*
2302                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2303                  *
2304                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2305                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2306                  *
2307                  * These controllers are really messed-up.
2308                  *
2309                  * 1. Their bulk RX endpoint will never report any data unless
2310                  *    the device was suspended at least once (yes, really).
2311                  * 2. They will not wakeup when autosuspended and receiving data
2312                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2313                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2314                  *
2315                  * To fix 1. enable runtime-suspend, force-suspend the
2316                  * HCI and then wake-it up by disabling runtime-suspend.
2317                  *
2318                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2319                  * will still be autosuspended when it is not open.
2320                  *
2321                  * --
2322                  *
2323                  * Because these are widespread problems we prefer generic solutions; so
2324                  * apply this initialization quirk to every controller that gets here,
2325                  * it should be harmless. The alternative is to not work at all.
2326                  */
2327                 pm_runtime_allow(&data->udev->dev);
2328
2329                 ret = pm_runtime_suspend(&data->udev->dev);
2330                 if (ret >= 0)
2331                         msleep(200);
2332                 else
2333                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2334
2335                 pm_runtime_forbid(&data->udev->dev);
2336
2337                 device_set_wakeup_capable(&data->udev->dev, false);
2338
2339                 /* Re-enable autosuspend if this was requested */
2340                 if (enable_autosuspend)
2341                         usb_enable_autosuspend(data->udev);
2342         }
2343
2344         kfree_skb(skb);
2345
2346         return 0;
2347 }
2348
2349 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2350 {
2351         struct sk_buff *skb;
2352         struct hci_event_hdr *hdr;
2353         struct hci_ev_cmd_complete *evt;
2354
2355         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2356         if (!skb)
2357                 return -ENOMEM;
2358
2359         hdr = skb_put(skb, sizeof(*hdr));
2360         hdr->evt = HCI_EV_CMD_COMPLETE;
2361         hdr->plen = sizeof(*evt) + 1;
2362
2363         evt = skb_put(skb, sizeof(*evt));
2364         evt->ncmd = 0x01;
2365         evt->opcode = cpu_to_le16(opcode);
2366
2367         skb_put_u8(skb, 0x00);
2368
2369         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2370
2371         return hci_recv_frame(hdev, skb);
2372 }
2373
2374 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2375                                  int count)
2376 {
2377         struct hci_dev *hdev = data->hdev;
2378
2379         /* When the device is in bootloader mode, then it can send
2380          * events via the bulk endpoint. These events are treated the
2381          * same way as the ones received from the interrupt endpoint.
2382          */
2383         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2384                 return btusb_recv_intr(data, buffer, count);
2385
2386         return btusb_recv_bulk(data, buffer, count);
2387 }
2388
2389 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2390 {
2391         if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2392                 struct hci_event_hdr *hdr = (void *)skb->data;
2393
2394                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2395                     hdr->plen > 0) {
2396                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2397                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2398
2399                         switch (skb->data[2]) {
2400                         case 0x02:
2401                                 /* When switching to the operational firmware
2402                                  * the device sends a vendor specific event
2403                                  * indicating that the bootup completed.
2404                                  */
2405                                 btintel_bootup(hdev, ptr, len);
2406                                 break;
2407                         case 0x06:
2408                                 /* When the firmware loading completes the
2409                                  * device sends out a vendor specific event
2410                                  * indicating the result of the firmware
2411                                  * loading.
2412                                  */
2413                                 btintel_secure_send_result(hdev, ptr, len);
2414                                 break;
2415                         }
2416                 }
2417         }
2418
2419         return hci_recv_frame(hdev, skb);
2420 }
2421
2422 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2423 {
2424         struct urb *urb;
2425
2426         BT_DBG("%s", hdev->name);
2427
2428         switch (hci_skb_pkt_type(skb)) {
2429         case HCI_COMMAND_PKT:
2430                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2431                         struct hci_command_hdr *cmd = (void *)skb->data;
2432                         __u16 opcode = le16_to_cpu(cmd->opcode);
2433
2434                         /* When in bootloader mode and the command 0xfc09
2435                          * is received, it needs to be send down the
2436                          * bulk endpoint. So allocate a bulk URB instead.
2437                          */
2438                         if (opcode == 0xfc09)
2439                                 urb = alloc_bulk_urb(hdev, skb);
2440                         else
2441                                 urb = alloc_ctrl_urb(hdev, skb);
2442
2443                         /* When the 0xfc01 command is issued to boot into
2444                          * the operational firmware, it will actually not
2445                          * send a command complete event. To keep the flow
2446                          * control working inject that event here.
2447                          */
2448                         if (opcode == 0xfc01)
2449                                 inject_cmd_complete(hdev, opcode);
2450                 } else {
2451                         urb = alloc_ctrl_urb(hdev, skb);
2452                 }
2453                 if (IS_ERR(urb))
2454                         return PTR_ERR(urb);
2455
2456                 hdev->stat.cmd_tx++;
2457                 return submit_or_queue_tx_urb(hdev, urb);
2458
2459         case HCI_ACLDATA_PKT:
2460                 urb = alloc_bulk_urb(hdev, skb);
2461                 if (IS_ERR(urb))
2462                         return PTR_ERR(urb);
2463
2464                 hdev->stat.acl_tx++;
2465                 return submit_or_queue_tx_urb(hdev, urb);
2466
2467         case HCI_SCODATA_PKT:
2468                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2469                         return -ENODEV;
2470
2471                 urb = alloc_isoc_urb(hdev, skb);
2472                 if (IS_ERR(urb))
2473                         return PTR_ERR(urb);
2474
2475                 hdev->stat.sco_tx++;
2476                 return submit_tx_urb(hdev, urb);
2477
2478         case HCI_ISODATA_PKT:
2479                 urb = alloc_bulk_urb(hdev, skb);
2480                 if (IS_ERR(urb))
2481                         return PTR_ERR(urb);
2482
2483                 return submit_or_queue_tx_urb(hdev, urb);
2484         }
2485
2486         return -EILSEQ;
2487 }
2488
2489 static int btusb_setup_realtek(struct hci_dev *hdev)
2490 {
2491         struct btusb_data *data = hci_get_drvdata(hdev);
2492         int ret;
2493
2494         ret = btrtl_setup_realtek(hdev);
2495
2496         if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2497                 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2498
2499         return ret;
2500 }
2501
2502 /* UHW CR mapping */
2503 #define MTK_BT_MISC             0x70002510
2504 #define MTK_BT_SUBSYS_RST       0x70002610
2505 #define MTK_UDMA_INT_STA_BT     0x74000024
2506 #define MTK_UDMA_INT_STA_BT1    0x74000308
2507 #define MTK_BT_WDT_STATUS       0x740003A0
2508 #define MTK_EP_RST_OPT          0x74011890
2509 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2510 #define MTK_BT_RST_DONE         0x00000100
2511 #define MTK_BT_RESET_WAIT_MS    100
2512 #define MTK_BT_RESET_NUM_TRIES  10
2513
2514 static void btusb_mtk_wmt_recv(struct urb *urb)
2515 {
2516         struct hci_dev *hdev = urb->context;
2517         struct btusb_data *data = hci_get_drvdata(hdev);
2518         struct sk_buff *skb;
2519         int err;
2520
2521         if (urb->status == 0 && urb->actual_length > 0) {
2522                 hdev->stat.byte_rx += urb->actual_length;
2523
2524                 /* WMT event shouldn't be fragmented and the size should be
2525                  * less than HCI_WMT_MAX_EVENT_SIZE.
2526                  */
2527                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2528                 if (!skb) {
2529                         hdev->stat.err_rx++;
2530                         kfree(urb->setup_packet);
2531                         return;
2532                 }
2533
2534                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2535                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2536
2537                 /* When someone waits for the WMT event, the skb is being cloned
2538                  * and being processed the events from there then.
2539                  */
2540                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2541                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2542                         if (!data->evt_skb) {
2543                                 kfree_skb(skb);
2544                                 kfree(urb->setup_packet);
2545                                 return;
2546                         }
2547                 }
2548
2549                 err = hci_recv_frame(hdev, skb);
2550                 if (err < 0) {
2551                         kfree_skb(data->evt_skb);
2552                         data->evt_skb = NULL;
2553                         kfree(urb->setup_packet);
2554                         return;
2555                 }
2556
2557                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2558                                        &data->flags)) {
2559                         /* Barrier to sync with other CPUs */
2560                         smp_mb__after_atomic();
2561                         wake_up_bit(&data->flags,
2562                                     BTUSB_TX_WAIT_VND_EVT);
2563                 }
2564                 kfree(urb->setup_packet);
2565                 return;
2566         } else if (urb->status == -ENOENT) {
2567                 /* Avoid suspend failed when usb_kill_urb */
2568                 return;
2569         }
2570
2571         usb_mark_last_busy(data->udev);
2572
2573         /* The URB complete handler is still called with urb->actual_length = 0
2574          * when the event is not available, so we should keep re-submitting
2575          * URB until WMT event returns, Also, It's necessary to wait some time
2576          * between the two consecutive control URBs to relax the target device
2577          * to generate the event. Otherwise, the WMT event cannot return from
2578          * the device successfully.
2579          */
2580         udelay(500);
2581
2582         usb_anchor_urb(urb, &data->ctrl_anchor);
2583         err = usb_submit_urb(urb, GFP_ATOMIC);
2584         if (err < 0) {
2585                 kfree(urb->setup_packet);
2586                 /* -EPERM: urb is being killed;
2587                  * -ENODEV: device got disconnected
2588                  */
2589                 if (err != -EPERM && err != -ENODEV)
2590                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2591                                    urb, -err);
2592                 usb_unanchor_urb(urb);
2593         }
2594 }
2595
2596 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2597 {
2598         struct btusb_data *data = hci_get_drvdata(hdev);
2599         struct usb_ctrlrequest *dr;
2600         unsigned char *buf;
2601         int err, size = 64;
2602         unsigned int pipe;
2603         struct urb *urb;
2604
2605         urb = usb_alloc_urb(0, GFP_KERNEL);
2606         if (!urb)
2607                 return -ENOMEM;
2608
2609         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2610         if (!dr) {
2611                 usb_free_urb(urb);
2612                 return -ENOMEM;
2613         }
2614
2615         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2616         dr->bRequest     = 1;
2617         dr->wIndex       = cpu_to_le16(0);
2618         dr->wValue       = cpu_to_le16(48);
2619         dr->wLength      = cpu_to_le16(size);
2620
2621         buf = kmalloc(size, GFP_KERNEL);
2622         if (!buf) {
2623                 kfree(dr);
2624                 usb_free_urb(urb);
2625                 return -ENOMEM;
2626         }
2627
2628         pipe = usb_rcvctrlpipe(data->udev, 0);
2629
2630         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2631                              buf, size, btusb_mtk_wmt_recv, hdev);
2632
2633         urb->transfer_flags |= URB_FREE_BUFFER;
2634
2635         usb_anchor_urb(urb, &data->ctrl_anchor);
2636         err = usb_submit_urb(urb, GFP_KERNEL);
2637         if (err < 0) {
2638                 if (err != -EPERM && err != -ENODEV)
2639                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2640                                    urb, -err);
2641                 usb_unanchor_urb(urb);
2642         }
2643
2644         usb_free_urb(urb);
2645
2646         return err;
2647 }
2648
2649 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2650                                   struct btmtk_hci_wmt_params *wmt_params)
2651 {
2652         struct btusb_data *data = hci_get_drvdata(hdev);
2653         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2654         u32 hlen, status = BTMTK_WMT_INVALID;
2655         struct btmtk_hci_wmt_evt *wmt_evt;
2656         struct btmtk_hci_wmt_cmd *wc;
2657         struct btmtk_wmt_hdr *hdr;
2658         int err;
2659
2660         /* Send the WMT command and wait until the WMT event returns */
2661         hlen = sizeof(*hdr) + wmt_params->dlen;
2662         if (hlen > 255)
2663                 return -EINVAL;
2664
2665         wc = kzalloc(hlen, GFP_KERNEL);
2666         if (!wc)
2667                 return -ENOMEM;
2668
2669         hdr = &wc->hdr;
2670         hdr->dir = 1;
2671         hdr->op = wmt_params->op;
2672         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2673         hdr->flag = wmt_params->flag;
2674         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2675
2676         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2677
2678         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2679          * it needs constantly polling control pipe until the host received the
2680          * WMT event, thus, we should require to specifically acquire PM counter
2681          * on the USB to prevent the interface from entering auto suspended
2682          * while WMT cmd/event in progress.
2683          */
2684         err = usb_autopm_get_interface(data->intf);
2685         if (err < 0)
2686                 goto err_free_wc;
2687
2688         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2689
2690         if (err < 0) {
2691                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2692                 usb_autopm_put_interface(data->intf);
2693                 goto err_free_wc;
2694         }
2695
2696         /* Submit control IN URB on demand to process the WMT event */
2697         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2698
2699         usb_autopm_put_interface(data->intf);
2700
2701         if (err < 0)
2702                 goto err_free_wc;
2703
2704         /* The vendor specific WMT commands are all answered by a vendor
2705          * specific event and will have the Command Status or Command
2706          * Complete as with usual HCI command flow control.
2707          *
2708          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2709          * state to be cleared. The driver specific event receive routine
2710          * will clear that state and with that indicate completion of the
2711          * WMT command.
2712          */
2713         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2714                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2715         if (err == -EINTR) {
2716                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2717                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2718                 goto err_free_wc;
2719         }
2720
2721         if (err) {
2722                 bt_dev_err(hdev, "Execution of wmt command timed out");
2723                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2724                 err = -ETIMEDOUT;
2725                 goto err_free_wc;
2726         }
2727
2728         /* Parse and handle the return WMT event */
2729         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2730         if (wmt_evt->whdr.op != hdr->op) {
2731                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2732                            wmt_evt->whdr.op, hdr->op);
2733                 err = -EIO;
2734                 goto err_free_skb;
2735         }
2736
2737         switch (wmt_evt->whdr.op) {
2738         case BTMTK_WMT_SEMAPHORE:
2739                 if (wmt_evt->whdr.flag == 2)
2740                         status = BTMTK_WMT_PATCH_UNDONE;
2741                 else
2742                         status = BTMTK_WMT_PATCH_DONE;
2743                 break;
2744         case BTMTK_WMT_FUNC_CTRL:
2745                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2746                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2747                         status = BTMTK_WMT_ON_DONE;
2748                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2749                         status = BTMTK_WMT_ON_PROGRESS;
2750                 else
2751                         status = BTMTK_WMT_ON_UNDONE;
2752                 break;
2753         case BTMTK_WMT_PATCH_DWNLD:
2754                 if (wmt_evt->whdr.flag == 2)
2755                         status = BTMTK_WMT_PATCH_DONE;
2756                 else if (wmt_evt->whdr.flag == 1)
2757                         status = BTMTK_WMT_PATCH_PROGRESS;
2758                 else
2759                         status = BTMTK_WMT_PATCH_UNDONE;
2760                 break;
2761         }
2762
2763         if (wmt_params->status)
2764                 *wmt_params->status = status;
2765
2766 err_free_skb:
2767         kfree_skb(data->evt_skb);
2768         data->evt_skb = NULL;
2769 err_free_wc:
2770         kfree(wc);
2771         return err;
2772 }
2773
2774 static int btusb_mtk_func_query(struct hci_dev *hdev)
2775 {
2776         struct btmtk_hci_wmt_params wmt_params;
2777         int status, err;
2778         u8 param = 0;
2779
2780         /* Query whether the function is enabled */
2781         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2782         wmt_params.flag = 4;
2783         wmt_params.dlen = sizeof(param);
2784         wmt_params.data = &param;
2785         wmt_params.status = &status;
2786
2787         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2788         if (err < 0) {
2789                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2790                 return err;
2791         }
2792
2793         return status;
2794 }
2795
2796 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2797 {
2798         struct hci_dev *hdev = data->hdev;
2799         int pipe, err;
2800         void *buf;
2801
2802         buf = kzalloc(4, GFP_KERNEL);
2803         if (!buf)
2804                 return -ENOMEM;
2805
2806         put_unaligned_le32(val, buf);
2807
2808         pipe = usb_sndctrlpipe(data->udev, 0);
2809         err = usb_control_msg(data->udev, pipe, 0x02,
2810                               0x5E,
2811                               reg >> 16, reg & 0xffff,
2812                               buf, 4, USB_CTRL_SET_TIMEOUT);
2813         if (err < 0) {
2814                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2815                 goto err_free_buf;
2816         }
2817
2818 err_free_buf:
2819         kfree(buf);
2820
2821         return err;
2822 }
2823
2824 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2825 {
2826         struct hci_dev *hdev = data->hdev;
2827         int pipe, err;
2828         void *buf;
2829
2830         buf = kzalloc(4, GFP_KERNEL);
2831         if (!buf)
2832                 return -ENOMEM;
2833
2834         pipe = usb_rcvctrlpipe(data->udev, 0);
2835         err = usb_control_msg(data->udev, pipe, 0x01,
2836                               0xDE,
2837                               reg >> 16, reg & 0xffff,
2838                               buf, 4, USB_CTRL_SET_TIMEOUT);
2839         if (err < 0) {
2840                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2841                 goto err_free_buf;
2842         }
2843
2844         *val = get_unaligned_le32(buf);
2845         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2846
2847 err_free_buf:
2848         kfree(buf);
2849
2850         return err;
2851 }
2852
2853 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2854 {
2855         int pipe, err, size = sizeof(u32);
2856         void *buf;
2857
2858         buf = kzalloc(size, GFP_KERNEL);
2859         if (!buf)
2860                 return -ENOMEM;
2861
2862         pipe = usb_rcvctrlpipe(data->udev, 0);
2863         err = usb_control_msg(data->udev, pipe, 0x63,
2864                               USB_TYPE_VENDOR | USB_DIR_IN,
2865                               reg >> 16, reg & 0xffff,
2866                               buf, size, USB_CTRL_SET_TIMEOUT);
2867         if (err < 0)
2868                 goto err_free_buf;
2869
2870         *val = get_unaligned_le32(buf);
2871
2872 err_free_buf:
2873         kfree(buf);
2874
2875         return err;
2876 }
2877
2878 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2879 {
2880         return btusb_mtk_reg_read(data, reg, id);
2881 }
2882
2883 static int btusb_mtk_setup(struct hci_dev *hdev)
2884 {
2885         struct btusb_data *data = hci_get_drvdata(hdev);
2886         struct btmtk_hci_wmt_params wmt_params;
2887         ktime_t calltime, delta, rettime;
2888         struct btmtk_tci_sleep tci_sleep;
2889         unsigned long long duration;
2890         struct sk_buff *skb;
2891         const char *fwname;
2892         int err, status;
2893         u32 dev_id;
2894         char fw_bin_name[64];
2895         u32 fw_version = 0;
2896         u8 param;
2897
2898         calltime = ktime_get();
2899
2900         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2901         if (err < 0) {
2902                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2903                 return err;
2904         }
2905
2906         if (!dev_id) {
2907                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2908                 if (err < 0) {
2909                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
2910                         return err;
2911                 }
2912                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2913                 if (err < 0) {
2914                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2915                         return err;
2916                 }
2917         }
2918
2919         switch (dev_id) {
2920         case 0x7663:
2921                 fwname = FIRMWARE_MT7663;
2922                 break;
2923         case 0x7668:
2924                 fwname = FIRMWARE_MT7668;
2925                 break;
2926         case 0x7922:
2927         case 0x7961:
2928                 snprintf(fw_bin_name, sizeof(fw_bin_name),
2929                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2930                          dev_id & 0xffff, (fw_version & 0xff) + 1);
2931                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2932                                                 btusb_mtk_hci_wmt_sync);
2933                 if (err < 0) {
2934                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2935                         return err;
2936                 }
2937
2938                 /* It's Device EndPoint Reset Option Register */
2939                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2940
2941                 /* Enable Bluetooth protocol */
2942                 param = 1;
2943                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2944                 wmt_params.flag = 0;
2945                 wmt_params.dlen = sizeof(param);
2946                 wmt_params.data = &param;
2947                 wmt_params.status = NULL;
2948
2949                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2950                 if (err < 0) {
2951                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2952                         return err;
2953                 }
2954
2955                 hci_set_msft_opcode(hdev, 0xFD30);
2956                 hci_set_aosp_capable(hdev);
2957                 goto done;
2958         default:
2959                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2960                            dev_id);
2961                 return -ENODEV;
2962         }
2963
2964         /* Query whether the firmware is already download */
2965         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2966         wmt_params.flag = 1;
2967         wmt_params.dlen = 0;
2968         wmt_params.data = NULL;
2969         wmt_params.status = &status;
2970
2971         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2972         if (err < 0) {
2973                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2974                 return err;
2975         }
2976
2977         if (status == BTMTK_WMT_PATCH_DONE) {
2978                 bt_dev_info(hdev, "firmware already downloaded");
2979                 goto ignore_setup_fw;
2980         }
2981
2982         /* Setup a firmware which the device definitely requires */
2983         err = btmtk_setup_firmware(hdev, fwname,
2984                                    btusb_mtk_hci_wmt_sync);
2985         if (err < 0)
2986                 return err;
2987
2988 ignore_setup_fw:
2989         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2990                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2991                                  2000, 5000000);
2992         /* -ETIMEDOUT happens */
2993         if (err < 0)
2994                 return err;
2995
2996         /* The other errors happen in btusb_mtk_func_query */
2997         if (status < 0)
2998                 return status;
2999
3000         if (status == BTMTK_WMT_ON_DONE) {
3001                 bt_dev_info(hdev, "function already on");
3002                 goto ignore_func_on;
3003         }
3004
3005         /* Enable Bluetooth protocol */
3006         param = 1;
3007         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3008         wmt_params.flag = 0;
3009         wmt_params.dlen = sizeof(param);
3010         wmt_params.data = &param;
3011         wmt_params.status = NULL;
3012
3013         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3014         if (err < 0) {
3015                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3016                 return err;
3017         }
3018
3019 ignore_func_on:
3020         /* Apply the low power environment setup */
3021         tci_sleep.mode = 0x5;
3022         tci_sleep.duration = cpu_to_le16(0x640);
3023         tci_sleep.host_duration = cpu_to_le16(0x640);
3024         tci_sleep.host_wakeup_pin = 0;
3025         tci_sleep.time_compensation = 0;
3026
3027         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3028                              HCI_INIT_TIMEOUT);
3029         if (IS_ERR(skb)) {
3030                 err = PTR_ERR(skb);
3031                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3032                 return err;
3033         }
3034         kfree_skb(skb);
3035
3036 done:
3037         rettime = ktime_get();
3038         delta = ktime_sub(rettime, calltime);
3039         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3040
3041         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3042
3043         return 0;
3044 }
3045
3046 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3047 {
3048         struct btmtk_hci_wmt_params wmt_params;
3049         u8 param = 0;
3050         int err;
3051
3052         /* Disable the device */
3053         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3054         wmt_params.flag = 0;
3055         wmt_params.dlen = sizeof(param);
3056         wmt_params.data = &param;
3057         wmt_params.status = NULL;
3058
3059         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3060         if (err < 0) {
3061                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3062                 return err;
3063         }
3064
3065         return 0;
3066 }
3067
3068 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3069 {
3070         struct btusb_data *data = hci_get_drvdata(hdev);
3071         u32 val;
3072         int err, retry = 0;
3073
3074         /* It's MediaTek specific bluetooth reset mechanism via USB */
3075         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3076                 bt_dev_err(hdev, "last reset failed? Not resetting again");
3077                 return;
3078         }
3079
3080         err = usb_autopm_get_interface(data->intf);
3081         if (err < 0)
3082                 return;
3083
3084         btusb_stop_traffic(data);
3085         usb_kill_anchored_urbs(&data->tx_anchor);
3086
3087         /* It's Device EndPoint Reset Option Register */
3088         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3089         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3090         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3091
3092         /* Reset the bluetooth chip via USB interface. */
3093         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3094         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3095         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3096         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3097         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3098         /* MT7921 need to delay 20ms between toggle reset bit */
3099         msleep(20);
3100         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3101         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3102
3103         /* Poll the register until reset is completed */
3104         do {
3105                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3106                 if (val & MTK_BT_RST_DONE) {
3107                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3108                         break;
3109                 }
3110
3111                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3112                 retry++;
3113                 msleep(MTK_BT_RESET_WAIT_MS);
3114         } while (retry < MTK_BT_RESET_NUM_TRIES);
3115
3116         btusb_mtk_id_get(data, 0x70010200, &val);
3117         if (!val)
3118                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3119
3120         usb_queue_reset_device(data->intf);
3121
3122         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3123 }
3124
3125 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3126 {
3127         struct btusb_data *data = hci_get_drvdata(hdev);
3128         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3129
3130         switch (handle) {
3131         case 0xfc6f:            /* Firmware dump from device */
3132                 /* When the firmware hangs, the device can no longer
3133                  * suspend and thus disable auto-suspend.
3134                  */
3135                 usb_disable_autosuspend(data->udev);
3136                 fallthrough;
3137         case 0x05ff:            /* Firmware debug logging 1 */
3138         case 0x05fe:            /* Firmware debug logging 2 */
3139                 return hci_recv_diag(hdev, skb);
3140         }
3141
3142         return hci_recv_frame(hdev, skb);
3143 }
3144
3145 #ifdef CONFIG_PM
3146 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3147 static int marvell_config_oob_wake(struct hci_dev *hdev)
3148 {
3149         struct sk_buff *skb;
3150         struct btusb_data *data = hci_get_drvdata(hdev);
3151         struct device *dev = &data->udev->dev;
3152         u16 pin, gap, opcode;
3153         int ret;
3154         u8 cmd[5];
3155
3156         /* Move on if no wakeup pin specified */
3157         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3158             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3159                 return 0;
3160
3161         /* Vendor specific command to configure a GPIO as wake-up pin */
3162         opcode = hci_opcode_pack(0x3F, 0x59);
3163         cmd[0] = opcode & 0xFF;
3164         cmd[1] = opcode >> 8;
3165         cmd[2] = 2; /* length of parameters that follow */
3166         cmd[3] = pin;
3167         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3168
3169         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3170         if (!skb) {
3171                 bt_dev_err(hdev, "%s: No memory", __func__);
3172                 return -ENOMEM;
3173         }
3174
3175         skb_put_data(skb, cmd, sizeof(cmd));
3176         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3177
3178         ret = btusb_send_frame(hdev, skb);
3179         if (ret) {
3180                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3181                 kfree_skb(skb);
3182                 return ret;
3183         }
3184
3185         return 0;
3186 }
3187 #endif
3188
3189 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3190                                     const bdaddr_t *bdaddr)
3191 {
3192         struct sk_buff *skb;
3193         u8 buf[8];
3194         long ret;
3195
3196         buf[0] = 0xfe;
3197         buf[1] = sizeof(bdaddr_t);
3198         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3199
3200         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3201         if (IS_ERR(skb)) {
3202                 ret = PTR_ERR(skb);
3203                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3204                            ret);
3205                 return ret;
3206         }
3207         kfree_skb(skb);
3208
3209         return 0;
3210 }
3211
3212 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3213                                     const bdaddr_t *bdaddr)
3214 {
3215         struct sk_buff *skb;
3216         u8 buf[10];
3217         long ret;
3218
3219         buf[0] = 0x01;
3220         buf[1] = 0x01;
3221         buf[2] = 0x00;
3222         buf[3] = sizeof(bdaddr_t);
3223         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3224
3225         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3226         if (IS_ERR(skb)) {
3227                 ret = PTR_ERR(skb);
3228                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3229                 return ret;
3230         }
3231         kfree_skb(skb);
3232
3233         return 0;
3234 }
3235
3236 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3237                                 const bdaddr_t *bdaddr)
3238 {
3239         struct sk_buff *skb;
3240         u8 buf[6];
3241         long ret;
3242
3243         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3244
3245         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3246                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3247         if (IS_ERR(skb)) {
3248                 ret = PTR_ERR(skb);
3249                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3250                 return ret;
3251         }
3252         kfree_skb(skb);
3253
3254         return 0;
3255 }
3256
3257 #define QCA_DFU_PACKET_LEN      4096
3258
3259 #define QCA_GET_TARGET_VERSION  0x09
3260 #define QCA_CHECK_STATUS        0x05
3261 #define QCA_DFU_DOWNLOAD        0x01
3262
3263 #define QCA_SYSCFG_UPDATED      0x40
3264 #define QCA_PATCH_UPDATED       0x80
3265 #define QCA_DFU_TIMEOUT         3000
3266 #define QCA_FLAG_MULTI_NVM      0x80
3267 #define QCA_BT_RESET_WAIT_MS    100
3268
3269 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3270 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3271
3272 struct qca_version {
3273         __le32  rom_version;
3274         __le32  patch_version;
3275         __le32  ram_version;
3276         __u8    chip_id;
3277         __u8    platform_id;
3278         __le16  flag;
3279         __u8    reserved[4];
3280 } __packed;
3281
3282 struct qca_rampatch_version {
3283         __le16  rom_version_high;
3284         __le16  rom_version_low;
3285         __le16  patch_version;
3286 } __packed;
3287
3288 struct qca_device_info {
3289         u32     rom_version;
3290         u8      rampatch_hdr;   /* length of header in rampatch */
3291         u8      nvm_hdr;        /* length of header in NVM */
3292         u8      ver_offset;     /* offset of version structure in rampatch */
3293 };
3294
3295 static const struct qca_device_info qca_devices_table[] = {
3296         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3297         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3298         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3299         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3300         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3301         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3302         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3303         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3304         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3305         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3306 };
3307
3308 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3309                                      void *data, u16 size)
3310 {
3311         int pipe, err;
3312         u8 *buf;
3313
3314         buf = kmalloc(size, GFP_KERNEL);
3315         if (!buf)
3316                 return -ENOMEM;
3317
3318         /* Found some of USB hosts have IOT issues with ours so that we should
3319          * not wait until HCI layer is ready.
3320          */
3321         pipe = usb_rcvctrlpipe(udev, 0);
3322         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3323                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3324         if (err < 0) {
3325                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3326                 goto done;
3327         }
3328
3329         memcpy(data, buf, size);
3330
3331 done:
3332         kfree(buf);
3333
3334         return err;
3335 }
3336
3337 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3338                                        const struct firmware *firmware,
3339                                        size_t hdr_size)
3340 {
3341         struct btusb_data *btdata = hci_get_drvdata(hdev);
3342         struct usb_device *udev = btdata->udev;
3343         size_t count, size, sent = 0;
3344         int pipe, len, err;
3345         u8 *buf;
3346
3347         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3348         if (!buf)
3349                 return -ENOMEM;
3350
3351         count = firmware->size;
3352
3353         size = min_t(size_t, count, hdr_size);
3354         memcpy(buf, firmware->data, size);
3355
3356         /* USB patches should go down to controller through USB path
3357          * because binary format fits to go down through USB channel.
3358          * USB control path is for patching headers and USB bulk is for
3359          * patch body.
3360          */
3361         pipe = usb_sndctrlpipe(udev, 0);
3362         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3363                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3364         if (err < 0) {
3365                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3366                 goto done;
3367         }
3368
3369         sent += size;
3370         count -= size;
3371
3372         /* ep2 need time to switch from function acl to function dfu,
3373          * so we add 20ms delay here.
3374          */
3375         msleep(20);
3376
3377         while (count) {
3378                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3379
3380                 memcpy(buf, firmware->data + sent, size);
3381
3382                 pipe = usb_sndbulkpipe(udev, 0x02);
3383                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3384                                    QCA_DFU_TIMEOUT);
3385                 if (err < 0) {
3386                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3387                                    sent, firmware->size, err);
3388                         break;
3389                 }
3390
3391                 if (size != len) {
3392                         bt_dev_err(hdev, "Failed to get bulk buffer");
3393                         err = -EILSEQ;
3394                         break;
3395                 }
3396
3397                 sent  += size;
3398                 count -= size;
3399         }
3400
3401 done:
3402         kfree(buf);
3403         return err;
3404 }
3405
3406 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3407                                          struct qca_version *ver,
3408                                          const struct qca_device_info *info)
3409 {
3410         struct qca_rampatch_version *rver;
3411         const struct firmware *fw;
3412         u32 ver_rom, ver_patch, rver_rom;
3413         u16 rver_rom_low, rver_rom_high, rver_patch;
3414         char fwname[64];
3415         int err;
3416
3417         ver_rom = le32_to_cpu(ver->rom_version);
3418         ver_patch = le32_to_cpu(ver->patch_version);
3419
3420         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3421
3422         err = request_firmware(&fw, fwname, &hdev->dev);
3423         if (err) {
3424                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3425                            fwname, err);
3426                 return err;
3427         }
3428
3429         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3430
3431         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3432         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3433         rver_patch = le16_to_cpu(rver->patch_version);
3434
3435         if (ver_rom & ~0xffffU) {
3436                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3437                 rver_rom = rver_rom_high << 16 | rver_rom_low;
3438         } else {
3439                 rver_rom = rver_rom_low;
3440         }
3441
3442         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3443                     "firmware rome 0x%x build 0x%x",
3444                     rver_rom, rver_patch, ver_rom, ver_patch);
3445
3446         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3447                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3448                 err = -EINVAL;
3449                 goto done;
3450         }
3451
3452         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3453
3454 done:
3455         release_firmware(fw);
3456
3457         return err;
3458 }
3459
3460 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3461                                         const struct qca_version *ver)
3462 {
3463         u32 rom_version = le32_to_cpu(ver->rom_version);
3464         u16 flag = le16_to_cpu(ver->flag);
3465
3466         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3467                 /* The board_id should be split into two bytes
3468                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3469                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3470                  * we have several platforms, and platform IDs are continuously added
3471                  * Platform ID:
3472                  * 0x00 is for Mobile
3473                  * 0x01 is for X86
3474                  * 0x02 is for Automotive
3475                  * 0x03 is for Consumer electronic
3476                  */
3477                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3478                 const char *variant;
3479
3480                 switch (le32_to_cpu(ver->ram_version)) {
3481                 case WCN6855_2_0_RAM_VERSION_GF:
3482                 case WCN6855_2_1_RAM_VERSION_GF:
3483                         variant = "_gf";
3484                         break;
3485                 default:
3486                         variant = "";
3487                         break;
3488                 }
3489
3490                 if (board_id == 0) {
3491                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3492                                 rom_version, variant);
3493                 } else {
3494                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3495                                 rom_version, variant, board_id);
3496                 }
3497         } else {
3498                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3499                         rom_version);
3500         }
3501
3502 }
3503
3504 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3505                                     struct qca_version *ver,
3506                                     const struct qca_device_info *info)
3507 {
3508         const struct firmware *fw;
3509         char fwname[64];
3510         int err;
3511
3512         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3513
3514         err = request_firmware(&fw, fwname, &hdev->dev);
3515         if (err) {
3516                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3517                            fwname, err);
3518                 return err;
3519         }
3520
3521         bt_dev_info(hdev, "using NVM file: %s", fwname);
3522
3523         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3524
3525         release_firmware(fw);
3526
3527         return err;
3528 }
3529
3530 /* identify the ROM version and check whether patches are needed */
3531 static bool btusb_qca_need_patch(struct usb_device *udev)
3532 {
3533         struct qca_version ver;
3534
3535         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3536                                       sizeof(ver)) < 0)
3537                 return false;
3538         /* only low ROM versions need patches */
3539         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3540 }
3541
3542 static int btusb_setup_qca(struct hci_dev *hdev)
3543 {
3544         struct btusb_data *btdata = hci_get_drvdata(hdev);
3545         struct usb_device *udev = btdata->udev;
3546         const struct qca_device_info *info = NULL;
3547         struct qca_version ver;
3548         u32 ver_rom;
3549         u8 status;
3550         int i, err;
3551
3552         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3553                                         sizeof(ver));
3554         if (err < 0)
3555                 return err;
3556
3557         ver_rom = le32_to_cpu(ver.rom_version);
3558
3559         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3560                 if (ver_rom == qca_devices_table[i].rom_version)
3561                         info = &qca_devices_table[i];
3562         }
3563         if (!info) {
3564                 /* If the rom_version is not matched in the qca_devices_table
3565                  * and the high ROM version is not zero, we assume this chip no
3566                  * need to load the rampatch and nvm.
3567                  */
3568                 if (ver_rom & ~0xffffU)
3569                         return 0;
3570
3571                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3572                 return -ENODEV;
3573         }
3574
3575         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3576                                         sizeof(status));
3577         if (err < 0)
3578                 return err;
3579
3580         if (!(status & QCA_PATCH_UPDATED)) {
3581                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3582                 if (err < 0)
3583                         return err;
3584         }
3585
3586         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3587                                         sizeof(ver));
3588         if (err < 0)
3589                 return err;
3590
3591         if (!(status & QCA_SYSCFG_UPDATED)) {
3592                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3593                 if (err < 0)
3594                         return err;
3595
3596                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3597                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3598                  * cause potential enable failure.
3599                  */
3600                 if (info->rom_version >= 0x00130201)
3601                         msleep(QCA_BT_RESET_WAIT_MS);
3602         }
3603
3604         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3605          * work with the likes of HSP/HFP mSBC.
3606          */
3607         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3608
3609         return 0;
3610 }
3611
3612 static inline int __set_diag_interface(struct hci_dev *hdev)
3613 {
3614         struct btusb_data *data = hci_get_drvdata(hdev);
3615         struct usb_interface *intf = data->diag;
3616         int i;
3617
3618         if (!data->diag)
3619                 return -ENODEV;
3620
3621         data->diag_tx_ep = NULL;
3622         data->diag_rx_ep = NULL;
3623
3624         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3625                 struct usb_endpoint_descriptor *ep_desc;
3626
3627                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3628
3629                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3630                         data->diag_tx_ep = ep_desc;
3631                         continue;
3632                 }
3633
3634                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3635                         data->diag_rx_ep = ep_desc;
3636                         continue;
3637                 }
3638         }
3639
3640         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3641                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3642                 return -ENODEV;
3643         }
3644
3645         return 0;
3646 }
3647
3648 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3649 {
3650         struct btusb_data *data = hci_get_drvdata(hdev);
3651         struct sk_buff *skb;
3652         struct urb *urb;
3653         unsigned int pipe;
3654
3655         if (!data->diag_tx_ep)
3656                 return ERR_PTR(-ENODEV);
3657
3658         urb = usb_alloc_urb(0, GFP_KERNEL);
3659         if (!urb)
3660                 return ERR_PTR(-ENOMEM);
3661
3662         skb = bt_skb_alloc(2, GFP_KERNEL);
3663         if (!skb) {
3664                 usb_free_urb(urb);
3665                 return ERR_PTR(-ENOMEM);
3666         }
3667
3668         skb_put_u8(skb, 0xf0);
3669         skb_put_u8(skb, enable);
3670
3671         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3672
3673         usb_fill_bulk_urb(urb, data->udev, pipe,
3674                           skb->data, skb->len, btusb_tx_complete, skb);
3675
3676         skb->dev = (void *)hdev;
3677
3678         return urb;
3679 }
3680
3681 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3682 {
3683         struct btusb_data *data = hci_get_drvdata(hdev);
3684         struct urb *urb;
3685
3686         if (!data->diag)
3687                 return -ENODEV;
3688
3689         if (!test_bit(HCI_RUNNING, &hdev->flags))
3690                 return -ENETDOWN;
3691
3692         urb = alloc_diag_urb(hdev, enable);
3693         if (IS_ERR(urb))
3694                 return PTR_ERR(urb);
3695
3696         return submit_or_queue_tx_urb(hdev, urb);
3697 }
3698
3699 #ifdef CONFIG_PM
3700 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3701 {
3702         struct btusb_data *data = priv;
3703
3704         pm_wakeup_event(&data->udev->dev, 0);
3705         pm_system_wakeup();
3706
3707         /* Disable only if not already disabled (keep it balanced) */
3708         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3709                 disable_irq_nosync(irq);
3710                 disable_irq_wake(irq);
3711         }
3712         return IRQ_HANDLED;
3713 }
3714
3715 static const struct of_device_id btusb_match_table[] = {
3716         { .compatible = "usb1286,204e" },
3717         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3718         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3719         { }
3720 };
3721 MODULE_DEVICE_TABLE(of, btusb_match_table);
3722
3723 /* Use an oob wakeup pin? */
3724 static int btusb_config_oob_wake(struct hci_dev *hdev)
3725 {
3726         struct btusb_data *data = hci_get_drvdata(hdev);
3727         struct device *dev = &data->udev->dev;
3728         int irq, ret;
3729
3730         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3731
3732         if (!of_match_device(btusb_match_table, dev))
3733                 return 0;
3734
3735         /* Move on if no IRQ specified */
3736         irq = of_irq_get_byname(dev->of_node, "wakeup");
3737         if (irq <= 0) {
3738                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3739                 return 0;
3740         }
3741
3742         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3743         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3744                                0, "OOB Wake-on-BT", data);
3745         if (ret) {
3746                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3747                 return ret;
3748         }
3749
3750         ret = device_init_wakeup(dev, true);
3751         if (ret) {
3752                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3753                 return ret;
3754         }
3755
3756         data->oob_wake_irq = irq;
3757         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3758         return 0;
3759 }
3760 #endif
3761
3762 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3763 {
3764         if (dmi_check_system(btusb_needs_reset_resume_table))
3765                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3766 }
3767
3768 static bool btusb_wakeup(struct hci_dev *hdev)
3769 {
3770         struct btusb_data *data = hci_get_drvdata(hdev);
3771
3772         return device_may_wakeup(&data->udev->dev);
3773 }
3774
3775 static int btusb_shutdown_qca(struct hci_dev *hdev)
3776 {
3777         struct sk_buff *skb;
3778
3779         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3780         if (IS_ERR(skb)) {
3781                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3782                 return PTR_ERR(skb);
3783         }
3784         kfree_skb(skb);
3785
3786         return 0;
3787 }
3788
3789 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3790                                     size_t count, loff_t *ppos)
3791 {
3792         struct btusb_data *data = file->private_data;
3793         char buf[3];
3794
3795         buf[0] = data->poll_sync ? 'Y' : 'N';
3796         buf[1] = '\n';
3797         buf[2] = '\0';
3798         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3799 }
3800
3801 static ssize_t force_poll_sync_write(struct file *file,
3802                                      const char __user *user_buf,
3803                                      size_t count, loff_t *ppos)
3804 {
3805         struct btusb_data *data = file->private_data;
3806         bool enable;
3807         int err;
3808
3809         err = kstrtobool_from_user(user_buf, count, &enable);
3810         if (err)
3811                 return err;
3812
3813         /* Only allow changes while the adapter is down */
3814         if (test_bit(HCI_UP, &data->hdev->flags))
3815                 return -EPERM;
3816
3817         if (data->poll_sync == enable)
3818                 return -EALREADY;
3819
3820         data->poll_sync = enable;
3821
3822         return count;
3823 }
3824
3825 static const struct file_operations force_poll_sync_fops = {
3826         .open           = simple_open,
3827         .read           = force_poll_sync_read,
3828         .write          = force_poll_sync_write,
3829         .llseek         = default_llseek,
3830 };
3831
3832 static int btusb_probe(struct usb_interface *intf,
3833                        const struct usb_device_id *id)
3834 {
3835         struct usb_endpoint_descriptor *ep_desc;
3836         struct gpio_desc *reset_gpio;
3837         struct btusb_data *data;
3838         struct hci_dev *hdev;
3839         unsigned ifnum_base;
3840         int i, err, priv_size;
3841
3842         BT_DBG("intf %p id %p", intf, id);
3843
3844         /* interface numbers are hardcoded in the spec */
3845         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3846                 if (!(id->driver_info & BTUSB_IFNUM_2))
3847                         return -ENODEV;
3848                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3849                         return -ENODEV;
3850         }
3851
3852         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3853
3854         if (!id->driver_info) {
3855                 const struct usb_device_id *match;
3856
3857                 match = usb_match_id(intf, blacklist_table);
3858                 if (match)
3859                         id = match;
3860         }
3861
3862         if (id->driver_info == BTUSB_IGNORE)
3863                 return -ENODEV;
3864
3865         if (id->driver_info & BTUSB_ATH3012) {
3866                 struct usb_device *udev = interface_to_usbdev(intf);
3867
3868                 /* Old firmware would otherwise let ath3k driver load
3869                  * patch and sysconfig files
3870                  */
3871                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3872                     !btusb_qca_need_patch(udev))
3873                         return -ENODEV;
3874         }
3875
3876         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3877         if (!data)
3878                 return -ENOMEM;
3879
3880         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3881                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3882
3883                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3884                         data->intr_ep = ep_desc;
3885                         continue;
3886                 }
3887
3888                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3889                         data->bulk_tx_ep = ep_desc;
3890                         continue;
3891                 }
3892
3893                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3894                         data->bulk_rx_ep = ep_desc;
3895                         continue;
3896                 }
3897         }
3898
3899         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3900                 return -ENODEV;
3901
3902         if (id->driver_info & BTUSB_AMP) {
3903                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3904                 data->cmdreq = 0x2b;
3905         } else {
3906                 data->cmdreq_type = USB_TYPE_CLASS;
3907                 data->cmdreq = 0x00;
3908         }
3909
3910         data->udev = interface_to_usbdev(intf);
3911         data->intf = intf;
3912
3913         INIT_WORK(&data->work, btusb_work);
3914         INIT_WORK(&data->waker, btusb_waker);
3915         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3916
3917         skb_queue_head_init(&data->acl_q);
3918
3919         init_usb_anchor(&data->deferred);
3920         init_usb_anchor(&data->tx_anchor);
3921         spin_lock_init(&data->txlock);
3922
3923         init_usb_anchor(&data->intr_anchor);
3924         init_usb_anchor(&data->bulk_anchor);
3925         init_usb_anchor(&data->isoc_anchor);
3926         init_usb_anchor(&data->diag_anchor);
3927         init_usb_anchor(&data->ctrl_anchor);
3928         spin_lock_init(&data->rxlock);
3929
3930         priv_size = 0;
3931
3932         data->recv_event = hci_recv_frame;
3933         data->recv_bulk = btusb_recv_bulk;
3934
3935         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3936                 /* Allocate extra space for Intel device */
3937                 priv_size += sizeof(struct btintel_data);
3938
3939                 /* Override the rx handlers */
3940                 data->recv_event = btusb_recv_event_intel;
3941                 data->recv_bulk = btusb_recv_bulk_intel;
3942         } else if (id->driver_info & BTUSB_REALTEK) {
3943                 /* Allocate extra space for Realtek device */
3944                 priv_size += sizeof(struct btrealtek_data);
3945         }
3946
3947         data->recv_acl = hci_recv_frame;
3948
3949         hdev = hci_alloc_dev_priv(priv_size);
3950         if (!hdev)
3951                 return -ENOMEM;
3952
3953         hdev->bus = HCI_USB;
3954         hci_set_drvdata(hdev, data);
3955
3956         if (id->driver_info & BTUSB_AMP)
3957                 hdev->dev_type = HCI_AMP;
3958         else
3959                 hdev->dev_type = HCI_PRIMARY;
3960
3961         data->hdev = hdev;
3962
3963         SET_HCIDEV_DEV(hdev, &intf->dev);
3964
3965         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3966                                         GPIOD_OUT_LOW);
3967         if (IS_ERR(reset_gpio)) {
3968                 err = PTR_ERR(reset_gpio);
3969                 goto out_free_dev;
3970         } else if (reset_gpio) {
3971                 data->reset_gpio = reset_gpio;
3972         }
3973
3974         hdev->open   = btusb_open;
3975         hdev->close  = btusb_close;
3976         hdev->flush  = btusb_flush;
3977         hdev->send   = btusb_send_frame;
3978         hdev->notify = btusb_notify;
3979         hdev->wakeup = btusb_wakeup;
3980
3981 #ifdef CONFIG_PM
3982         err = btusb_config_oob_wake(hdev);
3983         if (err)
3984                 goto out_free_dev;
3985
3986         /* Marvell devices may need a specific chip configuration */
3987         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3988                 err = marvell_config_oob_wake(hdev);
3989                 if (err)
3990                         goto out_free_dev;
3991         }
3992 #endif
3993         if (id->driver_info & BTUSB_CW6622)
3994                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3995
3996         if (id->driver_info & BTUSB_BCM2045)
3997                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3998
3999         if (id->driver_info & BTUSB_BCM92035)
4000                 hdev->setup = btusb_setup_bcm92035;
4001
4002         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4003             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4004                 hdev->manufacturer = 15;
4005                 hdev->setup = btbcm_setup_patchram;
4006                 hdev->set_diag = btusb_bcm_set_diag;
4007                 hdev->set_bdaddr = btbcm_set_bdaddr;
4008
4009                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4010                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4011         }
4012
4013         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4014             (id->driver_info & BTUSB_BCM_APPLE)) {
4015                 hdev->manufacturer = 15;
4016                 hdev->setup = btbcm_setup_apple;
4017                 hdev->set_diag = btusb_bcm_set_diag;
4018
4019                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4020                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4021         }
4022
4023         /* Combined Intel Device setup to support multiple setup routine */
4024         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4025                 err = btintel_configure_setup(hdev);
4026                 if (err)
4027                         goto out_free_dev;
4028
4029                 /* Transport specific configuration */
4030                 hdev->send = btusb_send_frame_intel;
4031                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4032
4033                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4034                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4035
4036                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4037                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4038
4039                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4040                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4041         }
4042
4043         if (id->driver_info & BTUSB_MARVELL)
4044                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4045
4046         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4047             (id->driver_info & BTUSB_MEDIATEK)) {
4048                 hdev->setup = btusb_mtk_setup;
4049                 hdev->shutdown = btusb_mtk_shutdown;
4050                 hdev->manufacturer = 70;
4051                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4052                 hdev->set_bdaddr = btmtk_set_bdaddr;
4053                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4054                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4055                 data->recv_acl = btusb_recv_acl_mtk;
4056         }
4057
4058         if (id->driver_info & BTUSB_SWAVE) {
4059                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4060                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4061         }
4062
4063         if (id->driver_info & BTUSB_INTEL_BOOT) {
4064                 hdev->manufacturer = 2;
4065                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4066         }
4067
4068         if (id->driver_info & BTUSB_ATH3012) {
4069                 data->setup_on_usb = btusb_setup_qca;
4070                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4071                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4072                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4073         }
4074
4075         if (id->driver_info & BTUSB_QCA_ROME) {
4076                 data->setup_on_usb = btusb_setup_qca;
4077                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4078                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4079                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4080                 btusb_check_needs_reset_resume(intf);
4081         }
4082
4083         if (id->driver_info & BTUSB_QCA_WCN6855) {
4084                 data->setup_on_usb = btusb_setup_qca;
4085                 hdev->shutdown = btusb_shutdown_qca;
4086                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4087                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4088                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4089                 hci_set_msft_opcode(hdev, 0xFD70);
4090         }
4091
4092         if (id->driver_info & BTUSB_AMP) {
4093                 /* AMP controllers do not support SCO packets */
4094                 data->isoc = NULL;
4095         } else {
4096                 /* Interface orders are hardcoded in the specification */
4097                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4098                 data->isoc_ifnum = ifnum_base + 1;
4099         }
4100
4101         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4102             (id->driver_info & BTUSB_REALTEK)) {
4103                 hdev->setup = btusb_setup_realtek;
4104                 hdev->shutdown = btrtl_shutdown_realtek;
4105                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4106
4107                 /* Realtek devices need to set remote wakeup on auto-suspend */
4108                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4109                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4110         }
4111
4112         if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4113                 /* Support is advertised, but not implemented */
4114                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4115         }
4116
4117         if (!reset)
4118                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4119
4120         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4121                 if (!disable_scofix)
4122                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4123         }
4124
4125         if (id->driver_info & BTUSB_BROKEN_ISOC)
4126                 data->isoc = NULL;
4127
4128         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4129                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4130
4131         if (id->driver_info & BTUSB_VALID_LE_STATES)
4132                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4133
4134         if (id->driver_info & BTUSB_DIGIANSWER) {
4135                 data->cmdreq_type = USB_TYPE_VENDOR;
4136                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4137         }
4138
4139         if (id->driver_info & BTUSB_CSR) {
4140                 struct usb_device *udev = data->udev;
4141                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4142
4143                 /* Old firmware would otherwise execute USB reset */
4144                 if (bcdDevice < 0x117)
4145                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4146
4147                 /* This must be set first in case we disable it for fakes */
4148                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4149
4150                 /* Fake CSR devices with broken commands */
4151                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4152                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4153                         hdev->setup = btusb_setup_csr;
4154         }
4155
4156         if (id->driver_info & BTUSB_SNIFFER) {
4157                 struct usb_device *udev = data->udev;
4158
4159                 /* New sniffer firmware has crippled HCI interface */
4160                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4161                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4162         }
4163
4164         if (id->driver_info & BTUSB_INTEL_BOOT) {
4165                 /* A bug in the bootloader causes that interrupt interface is
4166                  * only enabled after receiving SetInterface(0, AltSetting=0).
4167                  */
4168                 err = usb_set_interface(data->udev, 0, 0);
4169                 if (err < 0) {
4170                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4171                         goto out_free_dev;
4172                 }
4173         }
4174
4175         if (data->isoc) {
4176                 err = usb_driver_claim_interface(&btusb_driver,
4177                                                  data->isoc, data);
4178                 if (err < 0)
4179                         goto out_free_dev;
4180         }
4181
4182         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4183                 if (!usb_driver_claim_interface(&btusb_driver,
4184                                                 data->diag, data))
4185                         __set_diag_interface(hdev);
4186                 else
4187                         data->diag = NULL;
4188         }
4189
4190         if (enable_autosuspend)
4191                 usb_enable_autosuspend(data->udev);
4192
4193         data->poll_sync = enable_poll_sync;
4194
4195         err = hci_register_dev(hdev);
4196         if (err < 0)
4197                 goto out_free_dev;
4198
4199         usb_set_intfdata(intf, data);
4200
4201         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4202                             &force_poll_sync_fops);
4203
4204         return 0;
4205
4206 out_free_dev:
4207         if (data->reset_gpio)
4208                 gpiod_put(data->reset_gpio);
4209         hci_free_dev(hdev);
4210         return err;
4211 }
4212
4213 static void btusb_disconnect(struct usb_interface *intf)
4214 {
4215         struct btusb_data *data = usb_get_intfdata(intf);
4216         struct hci_dev *hdev;
4217
4218         BT_DBG("intf %p", intf);
4219
4220         if (!data)
4221                 return;
4222
4223         hdev = data->hdev;
4224         usb_set_intfdata(data->intf, NULL);
4225
4226         if (data->isoc)
4227                 usb_set_intfdata(data->isoc, NULL);
4228
4229         if (data->diag)
4230                 usb_set_intfdata(data->diag, NULL);
4231
4232         hci_unregister_dev(hdev);
4233
4234         if (intf == data->intf) {
4235                 if (data->isoc)
4236                         usb_driver_release_interface(&btusb_driver, data->isoc);
4237                 if (data->diag)
4238                         usb_driver_release_interface(&btusb_driver, data->diag);
4239         } else if (intf == data->isoc) {
4240                 if (data->diag)
4241                         usb_driver_release_interface(&btusb_driver, data->diag);
4242                 usb_driver_release_interface(&btusb_driver, data->intf);
4243         } else if (intf == data->diag) {
4244                 usb_driver_release_interface(&btusb_driver, data->intf);
4245                 if (data->isoc)
4246                         usb_driver_release_interface(&btusb_driver, data->isoc);
4247         }
4248
4249         if (data->oob_wake_irq)
4250                 device_init_wakeup(&data->udev->dev, false);
4251
4252         if (data->reset_gpio)
4253                 gpiod_put(data->reset_gpio);
4254
4255         hci_free_dev(hdev);
4256 }
4257
4258 #ifdef CONFIG_PM
4259 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4260 {
4261         struct btusb_data *data = usb_get_intfdata(intf);
4262
4263         BT_DBG("intf %p", intf);
4264
4265         if (data->suspend_count++)
4266                 return 0;
4267
4268         spin_lock_irq(&data->txlock);
4269         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4270                 set_bit(BTUSB_SUSPENDING, &data->flags);
4271                 spin_unlock_irq(&data->txlock);
4272         } else {
4273                 spin_unlock_irq(&data->txlock);
4274                 data->suspend_count--;
4275                 return -EBUSY;
4276         }
4277
4278         cancel_work_sync(&data->work);
4279
4280         btusb_stop_traffic(data);
4281         usb_kill_anchored_urbs(&data->tx_anchor);
4282
4283         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4284                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4285                 enable_irq_wake(data->oob_wake_irq);
4286                 enable_irq(data->oob_wake_irq);
4287         }
4288
4289         /* For global suspend, Realtek devices lose the loaded fw
4290          * in them. But for autosuspend, firmware should remain.
4291          * Actually, it depends on whether the usb host sends
4292          * set feature (enable wakeup) or not.
4293          */
4294         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4295                 if (PMSG_IS_AUTO(message) &&
4296                     device_can_wakeup(&data->udev->dev))
4297                         data->udev->do_remote_wakeup = 1;
4298                 else if (!PMSG_IS_AUTO(message) &&
4299                          !device_may_wakeup(&data->udev->dev)) {
4300                         data->udev->do_remote_wakeup = 0;
4301                         data->udev->reset_resume = 1;
4302                 }
4303         }
4304
4305         return 0;
4306 }
4307
4308 static void play_deferred(struct btusb_data *data)
4309 {
4310         struct urb *urb;
4311         int err;
4312
4313         while ((urb = usb_get_from_anchor(&data->deferred))) {
4314                 usb_anchor_urb(urb, &data->tx_anchor);
4315
4316                 err = usb_submit_urb(urb, GFP_ATOMIC);
4317                 if (err < 0) {
4318                         if (err != -EPERM && err != -ENODEV)
4319                                 BT_ERR("%s urb %p submission failed (%d)",
4320                                        data->hdev->name, urb, -err);
4321                         kfree(urb->setup_packet);
4322                         usb_unanchor_urb(urb);
4323                         usb_free_urb(urb);
4324                         break;
4325                 }
4326
4327                 data->tx_in_flight++;
4328                 usb_free_urb(urb);
4329         }
4330
4331         /* Cleanup the rest deferred urbs. */
4332         while ((urb = usb_get_from_anchor(&data->deferred))) {
4333                 kfree(urb->setup_packet);
4334                 usb_free_urb(urb);
4335         }
4336 }
4337
4338 static int btusb_resume(struct usb_interface *intf)
4339 {
4340         struct btusb_data *data = usb_get_intfdata(intf);
4341         struct hci_dev *hdev = data->hdev;
4342         int err = 0;
4343
4344         BT_DBG("intf %p", intf);
4345
4346         if (--data->suspend_count)
4347                 return 0;
4348
4349         /* Disable only if not already disabled (keep it balanced) */
4350         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4351                 disable_irq(data->oob_wake_irq);
4352                 disable_irq_wake(data->oob_wake_irq);
4353         }
4354
4355         if (!test_bit(HCI_RUNNING, &hdev->flags))
4356                 goto done;
4357
4358         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4359                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4360                 if (err < 0) {
4361                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4362                         goto failed;
4363                 }
4364         }
4365
4366         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4367                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4368                 if (err < 0) {
4369                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4370                         goto failed;
4371                 }
4372
4373                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4374         }
4375
4376         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4377                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4378                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4379                 else
4380                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4381         }
4382
4383         spin_lock_irq(&data->txlock);
4384         play_deferred(data);
4385         clear_bit(BTUSB_SUSPENDING, &data->flags);
4386         spin_unlock_irq(&data->txlock);
4387         schedule_work(&data->work);
4388
4389         return 0;
4390
4391 failed:
4392         usb_scuttle_anchored_urbs(&data->deferred);
4393 done:
4394         spin_lock_irq(&data->txlock);
4395         clear_bit(BTUSB_SUSPENDING, &data->flags);
4396         spin_unlock_irq(&data->txlock);
4397
4398         return err;
4399 }
4400 #endif
4401
4402 static struct usb_driver btusb_driver = {
4403         .name           = "btusb",
4404         .probe          = btusb_probe,
4405         .disconnect     = btusb_disconnect,
4406 #ifdef CONFIG_PM
4407         .suspend        = btusb_suspend,
4408         .resume         = btusb_resume,
4409 #endif
4410         .id_table       = btusb_table,
4411         .supports_autosuspend = 1,
4412         .disable_hub_initiated_lpm = 1,
4413 };
4414
4415 module_usb_driver(btusb_driver);
4416
4417 module_param(disable_scofix, bool, 0644);
4418 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4419
4420 module_param(force_scofix, bool, 0644);
4421 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4422
4423 module_param(enable_autosuspend, bool, 0644);
4424 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4425
4426 module_param(reset, bool, 0644);
4427 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4428
4429 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
4430 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4431 MODULE_VERSION(VERSION);
4432 MODULE_LICENSE("GPL");