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 <marcel@holtmann.org>
   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         { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
 544                                                      BTUSB_WIDEBAND_SPEECH },
 545         { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
 546                                                      BTUSB_WIDEBAND_SPEECH },
 547
 548         /* Realtek Bluetooth devices */
 549         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 550           .driver_info = BTUSB_REALTEK },
 551
 552         /* MediaTek Bluetooth devices */
 553         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 554           .driver_info = BTUSB_MEDIATEK |
 555                          BTUSB_WIDEBAND_SPEECH |
 556                          BTUSB_VALID_LE_STATES },
 557
 558         /* Additional MediaTek MT7615E Bluetooth devices */
 559         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 560
 561         /* Additional MediaTek MT7663 Bluetooth devices */
 562         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 563                                                      BTUSB_WIDEBAND_SPEECH |
 564                                                      BTUSB_VALID_LE_STATES },
 565         { USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK |
 566                                                      BTUSB_WIDEBAND_SPEECH |
 567                                                      BTUSB_VALID_LE_STATES },
 568
 569         /* Additional MediaTek MT7668 Bluetooth devices */
 570         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 571                                                      BTUSB_WIDEBAND_SPEECH |
 572                                                      BTUSB_VALID_LE_STATES },
 573
 574         /* Additional MediaTek MT7921 Bluetooth devices */
 575         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 576                                                      BTUSB_WIDEBAND_SPEECH |
 577                                                      BTUSB_VALID_LE_STATES },
 578         { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
 579                                                      BTUSB_WIDEBAND_SPEECH |
 580                                                      BTUSB_VALID_LE_STATES },
 581         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 582                                                      BTUSB_WIDEBAND_SPEECH |
 583                                                      BTUSB_VALID_LE_STATES },
 584         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 585                                                      BTUSB_WIDEBAND_SPEECH |
 586                                                      BTUSB_VALID_LE_STATES },
 587         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 588                                                      BTUSB_WIDEBAND_SPEECH |
 589                                                      BTUSB_VALID_LE_STATES },
 590         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 591                                                      BTUSB_WIDEBAND_SPEECH |
 592                                                      BTUSB_VALID_LE_STATES },
 593         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 594                                                      BTUSB_WIDEBAND_SPEECH |
 595                                                      BTUSB_VALID_LE_STATES },
 596         { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
 597                                                      BTUSB_WIDEBAND_SPEECH |
 598                                                      BTUSB_VALID_LE_STATES },
 599         { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
 600                                                      BTUSB_WIDEBAND_SPEECH |
 601                                                      BTUSB_VALID_LE_STATES },
 602         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 603                                                      BTUSB_WIDEBAND_SPEECH |
 604                                                      BTUSB_VALID_LE_STATES },
 605         { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
 606                                                      BTUSB_WIDEBAND_SPEECH |
 607                                                      BTUSB_VALID_LE_STATES },
 608
 609         /* MediaTek MT7922A Bluetooth devices */
 610         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 611                                                      BTUSB_WIDEBAND_SPEECH |
 612                                                      BTUSB_VALID_LE_STATES },
 613         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 614                                                      BTUSB_WIDEBAND_SPEECH |
 615                                                      BTUSB_VALID_LE_STATES },
 616         { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
 617                                                      BTUSB_WIDEBAND_SPEECH |
 618                                                      BTUSB_VALID_LE_STATES },
 619         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 620                                                      BTUSB_WIDEBAND_SPEECH |
 621                                                      BTUSB_VALID_LE_STATES },
 622         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 623                                                      BTUSB_WIDEBAND_SPEECH |
 624                                                      BTUSB_VALID_LE_STATES },
 625         { USB_DEVICE(0x0489, 0xe0e4), .driver_info = BTUSB_MEDIATEK |
 626                                                      BTUSB_WIDEBAND_SPEECH |
 627                                                      BTUSB_VALID_LE_STATES },
 628         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 629                                                      BTUSB_WIDEBAND_SPEECH |
 630                                                      BTUSB_VALID_LE_STATES },
 631
 632         /* Additional Realtek 8723AE Bluetooth devices */
 633         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 634         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 635
 636         /* Additional Realtek 8723BE Bluetooth devices */
 637         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 638         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 639         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 640         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 641         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 642         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 643         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 644
 645         /* Additional Realtek 8723BU Bluetooth devices */
 646         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 647
 648         /* Additional Realtek 8723DE Bluetooth devices */
 649         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 650         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 651
 652         /* Additional Realtek 8761BUV Bluetooth devices */
 653         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 654                                                      BTUSB_WIDEBAND_SPEECH },
 655         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 656                                                      BTUSB_WIDEBAND_SPEECH },
 657         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 658                                                      BTUSB_WIDEBAND_SPEECH },
 659         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 660                                                      BTUSB_WIDEBAND_SPEECH },
 661         { USB_DEVICE(0x6655, 0x8771), .driver_info = BTUSB_REALTEK |
 662                                                      BTUSB_WIDEBAND_SPEECH },
 663         { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
 664                                                      BTUSB_WIDEBAND_SPEECH },
 665         { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 666                                                      BTUSB_WIDEBAND_SPEECH },
 667
 668         /* Additional Realtek 8821AE Bluetooth devices */
 669         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 670         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 671         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 672         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 673         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 674
 675         /* Additional Realtek 8822BE Bluetooth devices */
 676         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 677         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 678
 679         /* Additional Realtek 8822CE Bluetooth devices */
 680         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 681                                                      BTUSB_WIDEBAND_SPEECH },
 682         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 683                                                      BTUSB_WIDEBAND_SPEECH },
 684         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 685                                                      BTUSB_WIDEBAND_SPEECH },
 686         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 687                                                      BTUSB_WIDEBAND_SPEECH },
 688         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 689                                                      BTUSB_WIDEBAND_SPEECH },
 690         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 691                                                      BTUSB_WIDEBAND_SPEECH },
 692         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 693                                                      BTUSB_WIDEBAND_SPEECH },
 694         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 695                                                      BTUSB_WIDEBAND_SPEECH },
 696         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 697                                                      BTUSB_WIDEBAND_SPEECH },
 698         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 699                                                      BTUSB_WIDEBAND_SPEECH },
 700         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 701                                                      BTUSB_WIDEBAND_SPEECH },
 702
 703         /* Actions Semiconductor ATS2851 based devices */
 704         { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
 705
 706         /* Silicon Wave based devices */
 707         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 708
 709         { }     /* Terminating entry */
 710 };
 711
 712 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 713  * this is a problem with the platform (likely shutting off all power) not with
 714  * the module itself. So we use a DMI list to match known broken platforms.
 715  */
 716 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 717         {
 718                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 719                 .matches = {
 720                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 721                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 722                 },
 723         },
 724         {
 725                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 726                 .matches = {
 727                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 728                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 729                 },
 730         },
 731         {
 732                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 733                 .matches = {
 734                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 735                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 736                 },
 737         },
 738         {}
 739 };
 740
 741 struct qca_dump_info {
 742         /* fields for dump collection */
 743         u16 id_vendor;
 744         u16 id_product;
 745         u32 fw_version;
 746         u32 controller_id;
 747         u32 ram_dump_size;
 748         u16 ram_dump_seqno;
 749 };
 750
 751 #define BTUSB_MAX_ISOC_FRAMES   10
 752
 753 #define BTUSB_INTR_RUNNING      0
 754 #define BTUSB_BULK_RUNNING      1
 755 #define BTUSB_ISOC_RUNNING      2
 756 #define BTUSB_SUSPENDING        3
 757 #define BTUSB_DID_ISO_RESUME    4
 758 #define BTUSB_BOOTLOADER        5
 759 #define BTUSB_DOWNLOADING       6
 760 #define BTUSB_FIRMWARE_LOADED   7
 761 #define BTUSB_FIRMWARE_FAILED   8
 762 #define BTUSB_BOOTING           9
 763 #define BTUSB_DIAG_RUNNING      10
 764 #define BTUSB_OOB_WAKE_ENABLED  11
 765 #define BTUSB_HW_RESET_ACTIVE   12
 766 #define BTUSB_TX_WAIT_VND_EVT   13
 767 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 768 #define BTUSB_USE_ALT3_FOR_WBS  15
 769 #define BTUSB_ALT6_CONTINUOUS_TX        16
 770 #define BTUSB_HW_SSR_ACTIVE     17
 771
 772 struct btusb_data {
 773         struct hci_dev       *hdev;
 774         struct usb_device    *udev;
 775         struct usb_interface *intf;
 776         struct usb_interface *isoc;
 777         struct usb_interface *diag;
 778         unsigned isoc_ifnum;
 779
 780         unsigned long flags;
 781
 782         bool poll_sync;
 783         int intr_interval;
 784         struct work_struct  work;
 785         struct work_struct  waker;
 786         struct delayed_work rx_work;
 787
 788         struct sk_buff_head acl_q;
 789
 790         struct usb_anchor deferred;
 791         struct usb_anchor tx_anchor;
 792         int tx_in_flight;
 793         spinlock_t txlock;
 794
 795         struct usb_anchor intr_anchor;
 796         struct usb_anchor bulk_anchor;
 797         struct usb_anchor isoc_anchor;
 798         struct usb_anchor diag_anchor;
 799         struct usb_anchor ctrl_anchor;
 800         spinlock_t rxlock;
 801
 802         struct sk_buff *evt_skb;
 803         struct sk_buff *acl_skb;
 804         struct sk_buff *sco_skb;
 805
 806         struct usb_endpoint_descriptor *intr_ep;
 807         struct usb_endpoint_descriptor *bulk_tx_ep;
 808         struct usb_endpoint_descriptor *bulk_rx_ep;
 809         struct usb_endpoint_descriptor *isoc_tx_ep;
 810         struct usb_endpoint_descriptor *isoc_rx_ep;
 811         struct usb_endpoint_descriptor *diag_tx_ep;
 812         struct usb_endpoint_descriptor *diag_rx_ep;
 813
 814         struct gpio_desc *reset_gpio;
 815
 816         __u8 cmdreq_type;
 817         __u8 cmdreq;
 818
 819         unsigned int sco_num;
 820         unsigned int air_mode;
 821         bool usb_alt6_packet_flow;
 822         int isoc_altsetting;
 823         int suspend_count;
 824
 825         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 826         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 827         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 828
 829         int (*setup_on_usb)(struct hci_dev *hdev);
 830
 831         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 832         unsigned cmd_timeout_cnt;
 833
 834         struct qca_dump_info qca_dump;
 835 };
 836
 837 static void btusb_reset(struct hci_dev *hdev)
 838 {
 839         struct btusb_data *data;
 840         int err;
 841
 842         if (hdev->reset) {
 843                 hdev->reset(hdev);
 844                 return;
 845         }
 846
 847         data = hci_get_drvdata(hdev);
 848         /* This is not an unbalanced PM reference since the device will reset */
 849         err = usb_autopm_get_interface(data->intf);
 850         if (err) {
 851                 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
 852                 return;
 853         }
 854
 855         bt_dev_err(hdev, "Resetting usb device.");
 856         usb_queue_reset_device(data->intf);
 857 }
 858
 859 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 860 {
 861         struct btusb_data *data = hci_get_drvdata(hdev);
 862         struct gpio_desc *reset_gpio = data->reset_gpio;
 863
 864         if (++data->cmd_timeout_cnt < 5)
 865                 return;
 866
 867         if (!reset_gpio) {
 868                 btusb_reset(hdev);
 869                 return;
 870         }
 871
 872         /*
 873          * Toggle the hard reset line if the platform provides one. The reset
 874          * is going to yank the device off the USB and then replug. So doing
 875          * once is enough. The cleanup is handled correctly on the way out
 876          * (standard USB disconnect), and the new device is detected cleanly
 877          * and bound to the driver again like it should be.
 878          */
 879         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 880                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 881                 return;
 882         }
 883
 884         bt_dev_err(hdev, "Initiating HW reset via gpio");
 885         gpiod_set_value_cansleep(reset_gpio, 1);
 886         msleep(100);
 887         gpiod_set_value_cansleep(reset_gpio, 0);
 888 }
 889
 890 #define RTK_DEVCOREDUMP_CODE_MEMDUMP            0x01
 891 #define RTK_DEVCOREDUMP_CODE_HW_ERR             0x02
 892 #define RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT        0x03
 893
 894 #define RTK_SUB_EVENT_CODE_COREDUMP             0x34
 895
 896 struct rtk_dev_coredump_hdr {
 897         u8 type;
 898         u8 code;
 899         u8 reserved[2];
 900 } __packed;
 901
 902 static inline void btusb_rtl_alloc_devcoredump(struct hci_dev *hdev,
 903                 struct rtk_dev_coredump_hdr *hdr, u8 *buf, u32 len)
 904 {
 905         struct sk_buff *skb;
 906
 907         skb = alloc_skb(len + sizeof(*hdr), GFP_ATOMIC);
 908         if (!skb)
 909                 return;
 910
 911         skb_put_data(skb, hdr, sizeof(*hdr));
 912         if (len)
 913                 skb_put_data(skb, buf, len);
 914
 915         if (!hci_devcd_init(hdev, skb->len)) {
 916                 hci_devcd_append(hdev, skb);
 917                 hci_devcd_complete(hdev);
 918         } else {
 919                 bt_dev_err(hdev, "RTL: Failed to generate devcoredump");
 920                 kfree_skb(skb);
 921         }
 922 }
 923
 924 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 925 {
 926         struct btusb_data *data = hci_get_drvdata(hdev);
 927         struct gpio_desc *reset_gpio = data->reset_gpio;
 928         struct rtk_dev_coredump_hdr hdr = {
 929                 .type = RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT,
 930         };
 931
 932         btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
 933
 934         if (++data->cmd_timeout_cnt < 5)
 935                 return;
 936
 937         if (!reset_gpio) {
 938                 btusb_reset(hdev);
 939                 return;
 940         }
 941
 942         /* Toggle the hard reset line. The Realtek device is going to
 943          * yank itself off the USB and then replug. The cleanup is handled
 944          * correctly on the way out (standard USB disconnect), and the new
 945          * device is detected cleanly and bound to the driver again like
 946          * it should be.
 947          */
 948         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 949                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 950                 return;
 951         }
 952
 953         bt_dev_err(hdev, "Reset Realtek device via gpio");
 954         gpiod_set_value_cansleep(reset_gpio, 1);
 955         msleep(200);
 956         gpiod_set_value_cansleep(reset_gpio, 0);
 957 }
 958
 959 static void btusb_rtl_hw_error(struct hci_dev *hdev, u8 code)
 960 {
 961         struct rtk_dev_coredump_hdr hdr = {
 962                 .type = RTK_DEVCOREDUMP_CODE_HW_ERR,
 963                 .code = code,
 964         };
 965
 966         bt_dev_err(hdev, "RTL: hw err, trigger devcoredump (%d)", code);
 967
 968         btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
 969 }
 970
 971 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 972 {
 973         struct btusb_data *data = hci_get_drvdata(hdev);
 974         struct gpio_desc *reset_gpio = data->reset_gpio;
 975
 976         if (test_bit(BTUSB_HW_SSR_ACTIVE, &data->flags)) {
 977                 bt_dev_info(hdev, "Ramdump in progress, defer cmd_timeout");
 978                 return;
 979         }
 980
 981         if (++data->cmd_timeout_cnt < 5)
 982                 return;
 983
 984         if (reset_gpio) {
 985                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
 986
 987                 /* Toggle the hard reset line. The qca bt device is going to
 988                  * yank itself off the USB and then replug. The cleanup is handled
 989                  * correctly on the way out (standard USB disconnect), and the new
 990                  * device is detected cleanly and bound to the driver again like
 991                  * it should be.
 992                  */
 993                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 994                         bt_dev_err(hdev, "last reset failed? Not resetting again");
 995                         return;
 996                 }
 997
 998                 gpiod_set_value_cansleep(reset_gpio, 0);
 999                 msleep(200);
1000                 gpiod_set_value_cansleep(reset_gpio, 1);
1001
1002                 return;
1003         }
1004
1005         btusb_reset(hdev);
1006 }
1007
1008 static inline void btusb_free_frags(struct btusb_data *data)
1009 {
1010         unsigned long flags;
1011
1012         spin_lock_irqsave(&data->rxlock, flags);
1013
1014         dev_kfree_skb_irq(data->evt_skb);
1015         data->evt_skb = NULL;
1016
1017         dev_kfree_skb_irq(data->acl_skb);
1018         data->acl_skb = NULL;
1019
1020         dev_kfree_skb_irq(data->sco_skb);
1021         data->sco_skb = NULL;
1022
1023         spin_unlock_irqrestore(&data->rxlock, flags);
1024 }
1025
1026 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
1027 {
1028         if (data->intr_interval) {
1029                 /* Trigger dequeue immediatelly if an event is received */
1030                 schedule_delayed_work(&data->rx_work, 0);
1031         }
1032
1033         return data->recv_event(data->hdev, skb);
1034 }
1035
1036 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
1037 {
1038         struct sk_buff *skb;
1039         unsigned long flags;
1040         int err = 0;
1041
1042         spin_lock_irqsave(&data->rxlock, flags);
1043         skb = data->evt_skb;
1044
1045         while (count) {
1046                 int len;
1047
1048                 if (!skb) {
1049                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
1050                         if (!skb) {
1051                                 err = -ENOMEM;
1052                                 break;
1053                         }
1054
1055                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1056                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
1057                 }
1058
1059                 len = min_t(uint, hci_skb_expect(skb), count);
1060                 skb_put_data(skb, buffer, len);
1061
1062                 count -= len;
1063                 buffer += len;
1064                 hci_skb_expect(skb) -= len;
1065
1066                 if (skb->len == HCI_EVENT_HDR_SIZE) {
1067                         /* Complete event header */
1068                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
1069
1070                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1071                                 kfree_skb(skb);
1072                                 skb = NULL;
1073
1074                                 err = -EILSEQ;
1075                                 break;
1076                         }
1077                 }
1078
1079                 if (!hci_skb_expect(skb)) {
1080                         /* Complete frame */
1081                         btusb_recv_event(data, skb);
1082                         skb = NULL;
1083                 }
1084         }
1085
1086         data->evt_skb = skb;
1087         spin_unlock_irqrestore(&data->rxlock, flags);
1088
1089         return err;
1090 }
1091
1092 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1093 {
1094         /* Only queue ACL packet if intr_interval is set as it means
1095          * force_poll_sync has been enabled.
1096          */
1097         if (!data->intr_interval)
1098                 return data->recv_acl(data->hdev, skb);
1099
1100         skb_queue_tail(&data->acl_q, skb);
1101         schedule_delayed_work(&data->rx_work, data->intr_interval);
1102
1103         return 0;
1104 }
1105
1106 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1107 {
1108         struct sk_buff *skb;
1109         unsigned long flags;
1110         int err = 0;
1111
1112         spin_lock_irqsave(&data->rxlock, flags);
1113         skb = data->acl_skb;
1114
1115         while (count) {
1116                 int len;
1117
1118                 if (!skb) {
1119                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1120                         if (!skb) {
1121                                 err = -ENOMEM;
1122                                 break;
1123                         }
1124
1125                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1126                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1127                 }
1128
1129                 len = min_t(uint, hci_skb_expect(skb), count);
1130                 skb_put_data(skb, buffer, len);
1131
1132                 count -= len;
1133                 buffer += len;
1134                 hci_skb_expect(skb) -= len;
1135
1136                 if (skb->len == HCI_ACL_HDR_SIZE) {
1137                         __le16 dlen = hci_acl_hdr(skb)->dlen;
1138
1139                         /* Complete ACL header */
1140                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
1141
1142                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1143                                 kfree_skb(skb);
1144                                 skb = NULL;
1145
1146                                 err = -EILSEQ;
1147                                 break;
1148                         }
1149                 }
1150
1151                 if (!hci_skb_expect(skb)) {
1152                         /* Complete frame */
1153                         btusb_recv_acl(data, skb);
1154                         skb = NULL;
1155                 }
1156         }
1157
1158         data->acl_skb = skb;
1159         spin_unlock_irqrestore(&data->rxlock, flags);
1160
1161         return err;
1162 }
1163
1164 static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1165                                       struct hci_sco_hdr *hdr)
1166 {
1167         __u16 handle;
1168
1169         if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1170                 // Can't validate, userspace controls everything.
1171                 return true;
1172
1173         /*
1174          * USB isochronous transfers are not designed to be reliable and may
1175          * lose fragments.  When this happens, the next first fragment
1176          * encountered might actually be a continuation fragment.
1177          * Validate the handle to detect it and drop it, or else the upper
1178          * layer will get garbage for a while.
1179          */
1180
1181         handle = hci_handle(__le16_to_cpu(hdr->handle));
1182
1183         switch (hci_conn_lookup_type(hdev, handle)) {
1184         case SCO_LINK:
1185         case ESCO_LINK:
1186                 return true;
1187         default:
1188                 return false;
1189         }
1190 }
1191
1192 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1193 {
1194         struct sk_buff *skb;
1195         unsigned long flags;
1196         int err = 0;
1197
1198         spin_lock_irqsave(&data->rxlock, flags);
1199         skb = data->sco_skb;
1200
1201         while (count) {
1202                 int len;
1203
1204                 if (!skb) {
1205                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1206                         if (!skb) {
1207                                 err = -ENOMEM;
1208                                 break;
1209                         }
1210
1211                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1212                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1213                 }
1214
1215                 len = min_t(uint, hci_skb_expect(skb), count);
1216                 skb_put_data(skb, buffer, len);
1217
1218                 count -= len;
1219                 buffer += len;
1220                 hci_skb_expect(skb) -= len;
1221
1222                 if (skb->len == HCI_SCO_HDR_SIZE) {
1223                         /* Complete SCO header */
1224                         struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1225
1226                         hci_skb_expect(skb) = hdr->dlen;
1227
1228                         if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1229                             !btusb_validate_sco_handle(data->hdev, hdr)) {
1230                                 kfree_skb(skb);
1231                                 skb = NULL;
1232
1233                                 err = -EILSEQ;
1234                                 break;
1235                         }
1236                 }
1237
1238                 if (!hci_skb_expect(skb)) {
1239                         /* Complete frame */
1240                         hci_recv_frame(data->hdev, skb);
1241                         skb = NULL;
1242                 }
1243         }
1244
1245         data->sco_skb = skb;
1246         spin_unlock_irqrestore(&data->rxlock, flags);
1247
1248         return err;
1249 }
1250
1251 static void btusb_intr_complete(struct urb *urb)
1252 {
1253         struct hci_dev *hdev = urb->context;
1254         struct btusb_data *data = hci_get_drvdata(hdev);
1255         int err;
1256
1257         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1258                urb->actual_length);
1259
1260         if (!test_bit(HCI_RUNNING, &hdev->flags))
1261                 return;
1262
1263         if (urb->status == 0) {
1264                 hdev->stat.byte_rx += urb->actual_length;
1265
1266                 if (btusb_recv_intr(data, urb->transfer_buffer,
1267                                     urb->actual_length) < 0) {
1268                         bt_dev_err(hdev, "corrupted event packet");
1269                         hdev->stat.err_rx++;
1270                 }
1271         } else if (urb->status == -ENOENT) {
1272                 /* Avoid suspend failed when usb_kill_urb */
1273                 return;
1274         }
1275
1276         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1277                 return;
1278
1279         usb_mark_last_busy(data->udev);
1280         usb_anchor_urb(urb, &data->intr_anchor);
1281
1282         err = usb_submit_urb(urb, GFP_ATOMIC);
1283         if (err < 0) {
1284                 /* -EPERM: urb is being killed;
1285                  * -ENODEV: device got disconnected
1286                  */
1287                 if (err != -EPERM && err != -ENODEV)
1288                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1289                                    urb, -err);
1290                 if (err != -EPERM)
1291                         hci_cmd_sync_cancel(hdev, -err);
1292                 usb_unanchor_urb(urb);
1293         }
1294 }
1295
1296 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1297 {
1298         struct btusb_data *data = hci_get_drvdata(hdev);
1299         struct urb *urb;
1300         unsigned char *buf;
1301         unsigned int pipe;
1302         int err, size;
1303
1304         BT_DBG("%s", hdev->name);
1305
1306         if (!data->intr_ep)
1307                 return -ENODEV;
1308
1309         urb = usb_alloc_urb(0, mem_flags);
1310         if (!urb)
1311                 return -ENOMEM;
1312
1313         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1314
1315         buf = kmalloc(size, mem_flags);
1316         if (!buf) {
1317                 usb_free_urb(urb);
1318                 return -ENOMEM;
1319         }
1320
1321         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1322
1323         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1324                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1325
1326         urb->transfer_flags |= URB_FREE_BUFFER;
1327
1328         usb_anchor_urb(urb, &data->intr_anchor);
1329
1330         err = usb_submit_urb(urb, mem_flags);
1331         if (err < 0) {
1332                 if (err != -EPERM && err != -ENODEV)
1333                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1334                                    urb, -err);
1335                 if (err != -EPERM)
1336                         hci_cmd_sync_cancel(hdev, -err);
1337                 usb_unanchor_urb(urb);
1338         }
1339
1340         /* Only initialize intr_interval if URB poll sync is enabled */
1341         if (!data->poll_sync)
1342                 goto done;
1343
1344         /* The units are frames (milliseconds) for full and low speed devices,
1345          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1346          * devices.
1347          *
1348          * This is done once on open/resume so it shouldn't change even if
1349          * force_poll_sync changes.
1350          */
1351         switch (urb->dev->speed) {
1352         case USB_SPEED_SUPER_PLUS:
1353         case USB_SPEED_SUPER:   /* units are 125us */
1354                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1355                 break;
1356         default:
1357                 data->intr_interval = msecs_to_jiffies(urb->interval);
1358                 break;
1359         }
1360
1361 done:
1362         usb_free_urb(urb);
1363
1364         return err;
1365 }
1366
1367 static void btusb_bulk_complete(struct urb *urb)
1368 {
1369         struct hci_dev *hdev = urb->context;
1370         struct btusb_data *data = hci_get_drvdata(hdev);
1371         int err;
1372
1373         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1374                urb->actual_length);
1375
1376         if (!test_bit(HCI_RUNNING, &hdev->flags))
1377                 return;
1378
1379         if (urb->status == 0) {
1380                 hdev->stat.byte_rx += urb->actual_length;
1381
1382                 if (data->recv_bulk(data, urb->transfer_buffer,
1383                                     urb->actual_length) < 0) {
1384                         bt_dev_err(hdev, "corrupted ACL packet");
1385                         hdev->stat.err_rx++;
1386                 }
1387         } else if (urb->status == -ENOENT) {
1388                 /* Avoid suspend failed when usb_kill_urb */
1389                 return;
1390         }
1391
1392         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1393                 return;
1394
1395         usb_anchor_urb(urb, &data->bulk_anchor);
1396         usb_mark_last_busy(data->udev);
1397
1398         err = usb_submit_urb(urb, GFP_ATOMIC);
1399         if (err < 0) {
1400                 /* -EPERM: urb is being killed;
1401                  * -ENODEV: device got disconnected
1402                  */
1403                 if (err != -EPERM && err != -ENODEV)
1404                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1405                                    urb, -err);
1406                 usb_unanchor_urb(urb);
1407         }
1408 }
1409
1410 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1411 {
1412         struct btusb_data *data = hci_get_drvdata(hdev);
1413         struct urb *urb;
1414         unsigned char *buf;
1415         unsigned int pipe;
1416         int err, size = HCI_MAX_FRAME_SIZE;
1417
1418         BT_DBG("%s", hdev->name);
1419
1420         if (!data->bulk_rx_ep)
1421                 return -ENODEV;
1422
1423         urb = usb_alloc_urb(0, mem_flags);
1424         if (!urb)
1425                 return -ENOMEM;
1426
1427         buf = kmalloc(size, mem_flags);
1428         if (!buf) {
1429                 usb_free_urb(urb);
1430                 return -ENOMEM;
1431         }
1432
1433         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1434
1435         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1436                           btusb_bulk_complete, hdev);
1437
1438         urb->transfer_flags |= URB_FREE_BUFFER;
1439
1440         usb_mark_last_busy(data->udev);
1441         usb_anchor_urb(urb, &data->bulk_anchor);
1442
1443         err = usb_submit_urb(urb, mem_flags);
1444         if (err < 0) {
1445                 if (err != -EPERM && err != -ENODEV)
1446                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1447                                    urb, -err);
1448                 usb_unanchor_urb(urb);
1449         }
1450
1451         usb_free_urb(urb);
1452
1453         return err;
1454 }
1455
1456 static void btusb_isoc_complete(struct urb *urb)
1457 {
1458         struct hci_dev *hdev = urb->context;
1459         struct btusb_data *data = hci_get_drvdata(hdev);
1460         int i, err;
1461
1462         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1463                urb->actual_length);
1464
1465         if (!test_bit(HCI_RUNNING, &hdev->flags))
1466                 return;
1467
1468         if (urb->status == 0) {
1469                 for (i = 0; i < urb->number_of_packets; i++) {
1470                         unsigned int offset = urb->iso_frame_desc[i].offset;
1471                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1472
1473                         if (urb->iso_frame_desc[i].status)
1474                                 continue;
1475
1476                         hdev->stat.byte_rx += length;
1477
1478                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1479                                             length) < 0) {
1480                                 bt_dev_err(hdev, "corrupted SCO packet");
1481                                 hdev->stat.err_rx++;
1482                         }
1483                 }
1484         } else if (urb->status == -ENOENT) {
1485                 /* Avoid suspend failed when usb_kill_urb */
1486                 return;
1487         }
1488
1489         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1490                 return;
1491
1492         usb_anchor_urb(urb, &data->isoc_anchor);
1493
1494         err = usb_submit_urb(urb, GFP_ATOMIC);
1495         if (err < 0) {
1496                 /* -EPERM: urb is being killed;
1497                  * -ENODEV: device got disconnected
1498                  */
1499                 if (err != -EPERM && err != -ENODEV)
1500                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1501                                    urb, -err);
1502                 usb_unanchor_urb(urb);
1503         }
1504 }
1505
1506 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1507                                                int mtu, struct btusb_data *data)
1508 {
1509         int i = 0, offset = 0;
1510         unsigned int interval;
1511
1512         BT_DBG("len %d mtu %d", len, mtu);
1513
1514         /* For mSBC ALT 6 settings some chips need to transmit the data
1515          * continuously without the zero length of USB packets.
1516          */
1517         if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1518                 goto ignore_usb_alt6_packet_flow;
1519
1520         /* For mSBC ALT 6 setting the host will send the packet at continuous
1521          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1522          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1523          * To maintain the rate we send 63bytes of usb packets alternatively for
1524          * 7ms and 8ms to maintain the rate as 7.5ms.
1525          */
1526         if (data->usb_alt6_packet_flow) {
1527                 interval = 7;
1528                 data->usb_alt6_packet_flow = false;
1529         } else {
1530                 interval = 6;
1531                 data->usb_alt6_packet_flow = true;
1532         }
1533
1534         for (i = 0; i < interval; i++) {
1535                 urb->iso_frame_desc[i].offset = offset;
1536                 urb->iso_frame_desc[i].length = offset;
1537         }
1538
1539 ignore_usb_alt6_packet_flow:
1540         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1541                 urb->iso_frame_desc[i].offset = offset;
1542                 urb->iso_frame_desc[i].length = len;
1543                 i++;
1544         }
1545
1546         urb->number_of_packets = i;
1547 }
1548
1549 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1550 {
1551         int i, offset = 0;
1552
1553         BT_DBG("len %d mtu %d", len, mtu);
1554
1555         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1556                                         i++, offset += mtu, len -= mtu) {
1557                 urb->iso_frame_desc[i].offset = offset;
1558                 urb->iso_frame_desc[i].length = mtu;
1559         }
1560
1561         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1562                 urb->iso_frame_desc[i].offset = offset;
1563                 urb->iso_frame_desc[i].length = len;
1564                 i++;
1565         }
1566
1567         urb->number_of_packets = i;
1568 }
1569
1570 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1571 {
1572         struct btusb_data *data = hci_get_drvdata(hdev);
1573         struct urb *urb;
1574         unsigned char *buf;
1575         unsigned int pipe;
1576         int err, size;
1577
1578         BT_DBG("%s", hdev->name);
1579
1580         if (!data->isoc_rx_ep)
1581                 return -ENODEV;
1582
1583         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1584         if (!urb)
1585                 return -ENOMEM;
1586
1587         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1588                                                 BTUSB_MAX_ISOC_FRAMES;
1589
1590         buf = kmalloc(size, mem_flags);
1591         if (!buf) {
1592                 usb_free_urb(urb);
1593                 return -ENOMEM;
1594         }
1595
1596         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1597
1598         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1599                          hdev, data->isoc_rx_ep->bInterval);
1600
1601         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1602
1603         __fill_isoc_descriptor(urb, size,
1604                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1605
1606         usb_anchor_urb(urb, &data->isoc_anchor);
1607
1608         err = usb_submit_urb(urb, mem_flags);
1609         if (err < 0) {
1610                 if (err != -EPERM && err != -ENODEV)
1611                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1612                                    urb, -err);
1613                 usb_unanchor_urb(urb);
1614         }
1615
1616         usb_free_urb(urb);
1617
1618         return err;
1619 }
1620
1621 static void btusb_diag_complete(struct urb *urb)
1622 {
1623         struct hci_dev *hdev = urb->context;
1624         struct btusb_data *data = hci_get_drvdata(hdev);
1625         int err;
1626
1627         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1628                urb->actual_length);
1629
1630         if (urb->status == 0) {
1631                 struct sk_buff *skb;
1632
1633                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1634                 if (skb) {
1635                         skb_put_data(skb, urb->transfer_buffer,
1636                                      urb->actual_length);
1637                         hci_recv_diag(hdev, skb);
1638                 }
1639         } else if (urb->status == -ENOENT) {
1640                 /* Avoid suspend failed when usb_kill_urb */
1641                 return;
1642         }
1643
1644         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1645                 return;
1646
1647         usb_anchor_urb(urb, &data->diag_anchor);
1648         usb_mark_last_busy(data->udev);
1649
1650         err = usb_submit_urb(urb, GFP_ATOMIC);
1651         if (err < 0) {
1652                 /* -EPERM: urb is being killed;
1653                  * -ENODEV: device got disconnected
1654                  */
1655                 if (err != -EPERM && err != -ENODEV)
1656                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1657                                    urb, -err);
1658                 usb_unanchor_urb(urb);
1659         }
1660 }
1661
1662 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1663 {
1664         struct btusb_data *data = hci_get_drvdata(hdev);
1665         struct urb *urb;
1666         unsigned char *buf;
1667         unsigned int pipe;
1668         int err, size = HCI_MAX_FRAME_SIZE;
1669
1670         BT_DBG("%s", hdev->name);
1671
1672         if (!data->diag_rx_ep)
1673                 return -ENODEV;
1674
1675         urb = usb_alloc_urb(0, mem_flags);
1676         if (!urb)
1677                 return -ENOMEM;
1678
1679         buf = kmalloc(size, mem_flags);
1680         if (!buf) {
1681                 usb_free_urb(urb);
1682                 return -ENOMEM;
1683         }
1684
1685         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1686
1687         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1688                           btusb_diag_complete, hdev);
1689
1690         urb->transfer_flags |= URB_FREE_BUFFER;
1691
1692         usb_mark_last_busy(data->udev);
1693         usb_anchor_urb(urb, &data->diag_anchor);
1694
1695         err = usb_submit_urb(urb, mem_flags);
1696         if (err < 0) {
1697                 if (err != -EPERM && err != -ENODEV)
1698                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1699                                    urb, -err);
1700                 usb_unanchor_urb(urb);
1701         }
1702
1703         usb_free_urb(urb);
1704
1705         return err;
1706 }
1707
1708 static void btusb_tx_complete(struct urb *urb)
1709 {
1710         struct sk_buff *skb = urb->context;
1711         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1712         struct btusb_data *data = hci_get_drvdata(hdev);
1713         unsigned long flags;
1714
1715         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1716                urb->actual_length);
1717
1718         if (!test_bit(HCI_RUNNING, &hdev->flags))
1719                 goto done;
1720
1721         if (!urb->status) {
1722                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1723         } else {
1724                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1725                         hci_cmd_sync_cancel(hdev, -urb->status);
1726                 hdev->stat.err_tx++;
1727         }
1728
1729 done:
1730         spin_lock_irqsave(&data->txlock, flags);
1731         data->tx_in_flight--;
1732         spin_unlock_irqrestore(&data->txlock, flags);
1733
1734         kfree(urb->setup_packet);
1735
1736         kfree_skb(skb);
1737 }
1738
1739 static void btusb_isoc_tx_complete(struct urb *urb)
1740 {
1741         struct sk_buff *skb = urb->context;
1742         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1743
1744         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1745                urb->actual_length);
1746
1747         if (!test_bit(HCI_RUNNING, &hdev->flags))
1748                 goto done;
1749
1750         if (!urb->status)
1751                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1752         else
1753                 hdev->stat.err_tx++;
1754
1755 done:
1756         kfree(urb->setup_packet);
1757
1758         kfree_skb(skb);
1759 }
1760
1761 static int btusb_open(struct hci_dev *hdev)
1762 {
1763         struct btusb_data *data = hci_get_drvdata(hdev);
1764         int err;
1765
1766         BT_DBG("%s", hdev->name);
1767
1768         err = usb_autopm_get_interface(data->intf);
1769         if (err < 0)
1770                 return err;
1771
1772         /* Patching USB firmware files prior to starting any URBs of HCI path
1773          * It is more safe to use USB bulk channel for downloading USB patch
1774          */
1775         if (data->setup_on_usb) {
1776                 err = data->setup_on_usb(hdev);
1777                 if (err < 0)
1778                         goto setup_fail;
1779         }
1780
1781         data->intf->needs_remote_wakeup = 1;
1782
1783         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1784                 goto done;
1785
1786         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1787         if (err < 0)
1788                 goto failed;
1789
1790         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1791         if (err < 0) {
1792                 usb_kill_anchored_urbs(&data->intr_anchor);
1793                 goto failed;
1794         }
1795
1796         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1797         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1798
1799         if (data->diag) {
1800                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1801                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1802         }
1803
1804 done:
1805         usb_autopm_put_interface(data->intf);
1806         return 0;
1807
1808 failed:
1809         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1810 setup_fail:
1811         usb_autopm_put_interface(data->intf);
1812         return err;
1813 }
1814
1815 static void btusb_stop_traffic(struct btusb_data *data)
1816 {
1817         usb_kill_anchored_urbs(&data->intr_anchor);
1818         usb_kill_anchored_urbs(&data->bulk_anchor);
1819         usb_kill_anchored_urbs(&data->isoc_anchor);
1820         usb_kill_anchored_urbs(&data->diag_anchor);
1821         usb_kill_anchored_urbs(&data->ctrl_anchor);
1822 }
1823
1824 static int btusb_close(struct hci_dev *hdev)
1825 {
1826         struct btusb_data *data = hci_get_drvdata(hdev);
1827         int err;
1828
1829         BT_DBG("%s", hdev->name);
1830
1831         cancel_delayed_work(&data->rx_work);
1832         cancel_work_sync(&data->work);
1833         cancel_work_sync(&data->waker);
1834
1835         skb_queue_purge(&data->acl_q);
1836
1837         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1838         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1839         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1840         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1841
1842         btusb_stop_traffic(data);
1843         btusb_free_frags(data);
1844
1845         err = usb_autopm_get_interface(data->intf);
1846         if (err < 0)
1847                 goto failed;
1848
1849         data->intf->needs_remote_wakeup = 0;
1850
1851         /* Enable remote wake up for auto-suspend */
1852         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1853                 data->intf->needs_remote_wakeup = 1;
1854
1855         usb_autopm_put_interface(data->intf);
1856
1857 failed:
1858         usb_scuttle_anchored_urbs(&data->deferred);
1859         return 0;
1860 }
1861
1862 static int btusb_flush(struct hci_dev *hdev)
1863 {
1864         struct btusb_data *data = hci_get_drvdata(hdev);
1865
1866         BT_DBG("%s", hdev->name);
1867
1868         cancel_delayed_work(&data->rx_work);
1869
1870         skb_queue_purge(&data->acl_q);
1871
1872         usb_kill_anchored_urbs(&data->tx_anchor);
1873         btusb_free_frags(data);
1874
1875         return 0;
1876 }
1877
1878 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1879 {
1880         struct btusb_data *data = hci_get_drvdata(hdev);
1881         struct usb_ctrlrequest *dr;
1882         struct urb *urb;
1883         unsigned int pipe;
1884
1885         urb = usb_alloc_urb(0, GFP_KERNEL);
1886         if (!urb)
1887                 return ERR_PTR(-ENOMEM);
1888
1889         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1890         if (!dr) {
1891                 usb_free_urb(urb);
1892                 return ERR_PTR(-ENOMEM);
1893         }
1894
1895         dr->bRequestType = data->cmdreq_type;
1896         dr->bRequest     = data->cmdreq;
1897         dr->wIndex       = 0;
1898         dr->wValue       = 0;
1899         dr->wLength      = __cpu_to_le16(skb->len);
1900
1901         pipe = usb_sndctrlpipe(data->udev, 0x00);
1902
1903         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1904                              skb->data, skb->len, btusb_tx_complete, skb);
1905
1906         skb->dev = (void *)hdev;
1907
1908         return urb;
1909 }
1910
1911 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1912 {
1913         struct btusb_data *data = hci_get_drvdata(hdev);
1914         struct urb *urb;
1915         unsigned int pipe;
1916
1917         if (!data->bulk_tx_ep)
1918                 return ERR_PTR(-ENODEV);
1919
1920         urb = usb_alloc_urb(0, GFP_KERNEL);
1921         if (!urb)
1922                 return ERR_PTR(-ENOMEM);
1923
1924         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1925
1926         usb_fill_bulk_urb(urb, data->udev, pipe,
1927                           skb->data, skb->len, btusb_tx_complete, skb);
1928
1929         skb->dev = (void *)hdev;
1930
1931         return urb;
1932 }
1933
1934 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1935 {
1936         struct btusb_data *data = hci_get_drvdata(hdev);
1937         struct urb *urb;
1938         unsigned int pipe;
1939
1940         if (!data->isoc_tx_ep)
1941                 return ERR_PTR(-ENODEV);
1942
1943         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1944         if (!urb)
1945                 return ERR_PTR(-ENOMEM);
1946
1947         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1948
1949         usb_fill_int_urb(urb, data->udev, pipe,
1950                          skb->data, skb->len, btusb_isoc_tx_complete,
1951                          skb, data->isoc_tx_ep->bInterval);
1952
1953         urb->transfer_flags  = URB_ISO_ASAP;
1954
1955         if (data->isoc_altsetting == 6)
1956                 __fill_isoc_descriptor_msbc(urb, skb->len,
1957                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1958                                             data);
1959         else
1960                 __fill_isoc_descriptor(urb, skb->len,
1961                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1962         skb->dev = (void *)hdev;
1963
1964         return urb;
1965 }
1966
1967 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1968 {
1969         struct btusb_data *data = hci_get_drvdata(hdev);
1970         int err;
1971
1972         usb_anchor_urb(urb, &data->tx_anchor);
1973
1974         err = usb_submit_urb(urb, GFP_KERNEL);
1975         if (err < 0) {
1976                 if (err != -EPERM && err != -ENODEV)
1977                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1978                                    urb, -err);
1979                 kfree(urb->setup_packet);
1980                 usb_unanchor_urb(urb);
1981         } else {
1982                 usb_mark_last_busy(data->udev);
1983         }
1984
1985         usb_free_urb(urb);
1986         return err;
1987 }
1988
1989 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1990 {
1991         struct btusb_data *data = hci_get_drvdata(hdev);
1992         unsigned long flags;
1993         bool suspending;
1994
1995         spin_lock_irqsave(&data->txlock, flags);
1996         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1997         if (!suspending)
1998                 data->tx_in_flight++;
1999         spin_unlock_irqrestore(&data->txlock, flags);
2000
2001         if (!suspending)
2002                 return submit_tx_urb(hdev, urb);
2003
2004         usb_anchor_urb(urb, &data->deferred);
2005         schedule_work(&data->waker);
2006
2007         usb_free_urb(urb);
2008         return 0;
2009 }
2010
2011 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
2012 {
2013         struct urb *urb;
2014
2015         BT_DBG("%s", hdev->name);
2016
2017         switch (hci_skb_pkt_type(skb)) {
2018         case HCI_COMMAND_PKT:
2019                 urb = alloc_ctrl_urb(hdev, skb);
2020                 if (IS_ERR(urb))
2021                         return PTR_ERR(urb);
2022
2023                 hdev->stat.cmd_tx++;
2024                 return submit_or_queue_tx_urb(hdev, urb);
2025
2026         case HCI_ACLDATA_PKT:
2027                 urb = alloc_bulk_urb(hdev, skb);
2028                 if (IS_ERR(urb))
2029                         return PTR_ERR(urb);
2030
2031                 hdev->stat.acl_tx++;
2032                 return submit_or_queue_tx_urb(hdev, urb);
2033
2034         case HCI_SCODATA_PKT:
2035                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2036                         return -ENODEV;
2037
2038                 urb = alloc_isoc_urb(hdev, skb);
2039                 if (IS_ERR(urb))
2040                         return PTR_ERR(urb);
2041
2042                 hdev->stat.sco_tx++;
2043                 return submit_tx_urb(hdev, urb);
2044
2045         case HCI_ISODATA_PKT:
2046                 urb = alloc_bulk_urb(hdev, skb);
2047                 if (IS_ERR(urb))
2048                         return PTR_ERR(urb);
2049
2050                 return submit_or_queue_tx_urb(hdev, urb);
2051         }
2052
2053         return -EILSEQ;
2054 }
2055
2056 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
2057 {
2058         struct btusb_data *data = hci_get_drvdata(hdev);
2059
2060         BT_DBG("%s evt %d", hdev->name, evt);
2061
2062         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
2063                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
2064                 data->air_mode = evt;
2065                 schedule_work(&data->work);
2066         }
2067 }
2068
2069 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
2070 {
2071         struct btusb_data *data = hci_get_drvdata(hdev);
2072         struct usb_interface *intf = data->isoc;
2073         struct usb_endpoint_descriptor *ep_desc;
2074         int i, err;
2075
2076         if (!data->isoc)
2077                 return -ENODEV;
2078
2079         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
2080         if (err < 0) {
2081                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
2082                 return err;
2083         }
2084
2085         data->isoc_altsetting = altsetting;
2086
2087         data->isoc_tx_ep = NULL;
2088         data->isoc_rx_ep = NULL;
2089
2090         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2091                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2092
2093                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2094                         data->isoc_tx_ep = ep_desc;
2095                         continue;
2096                 }
2097
2098                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2099                         data->isoc_rx_ep = ep_desc;
2100                         continue;
2101                 }
2102         }
2103
2104         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2105                 bt_dev_err(hdev, "invalid SCO descriptors");
2106                 return -ENODEV;
2107         }
2108
2109         return 0;
2110 }
2111
2112 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2113 {
2114         struct btusb_data *data = hci_get_drvdata(hdev);
2115         int err;
2116
2117         if (data->isoc_altsetting != new_alts) {
2118                 unsigned long flags;
2119
2120                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2121                 usb_kill_anchored_urbs(&data->isoc_anchor);
2122
2123                 /* When isochronous alternate setting needs to be
2124                  * changed, because SCO connection has been added
2125                  * or removed, a packet fragment may be left in the
2126                  * reassembling state. This could lead to wrongly
2127                  * assembled fragments.
2128                  *
2129                  * Clear outstanding fragment when selecting a new
2130                  * alternate setting.
2131                  */
2132                 spin_lock_irqsave(&data->rxlock, flags);
2133                 kfree_skb(data->sco_skb);
2134                 data->sco_skb = NULL;
2135                 spin_unlock_irqrestore(&data->rxlock, flags);
2136
2137                 err = __set_isoc_interface(hdev, new_alts);
2138                 if (err < 0)
2139                         return err;
2140         }
2141
2142         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2143                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2144                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2145                 else
2146                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2147         }
2148
2149         return 0;
2150 }
2151
2152 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2153                                                         int alt)
2154 {
2155         struct usb_interface *intf = data->isoc;
2156         int i;
2157
2158         BT_DBG("Looking for Alt no :%d", alt);
2159
2160         if (!intf)
2161                 return NULL;
2162
2163         for (i = 0; i < intf->num_altsetting; i++) {
2164                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2165                         return &intf->altsetting[i];
2166         }
2167
2168         return NULL;
2169 }
2170
2171 static void btusb_work(struct work_struct *work)
2172 {
2173         struct btusb_data *data = container_of(work, struct btusb_data, work);
2174         struct hci_dev *hdev = data->hdev;
2175         int new_alts = 0;
2176         int err;
2177
2178         if (data->sco_num > 0) {
2179                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2180                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2181                         if (err < 0) {
2182                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2183                                 usb_kill_anchored_urbs(&data->isoc_anchor);
2184                                 return;
2185                         }
2186
2187                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2188                 }
2189
2190                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2191                         if (hdev->voice_setting & 0x0020) {
2192                                 static const int alts[3] = { 2, 4, 5 };
2193
2194                                 new_alts = alts[data->sco_num - 1];
2195                         } else {
2196                                 new_alts = data->sco_num;
2197                         }
2198                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2199                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2200                          * many adapters do not support it.  Alt 1 appears to
2201                          * work for all adapters that do not have alt 6, and
2202                          * which work with WBS at all.  Some devices prefer
2203                          * alt 3 (HCI payload >= 60 Bytes let air packet
2204                          * data satisfy 60 bytes), requiring
2205                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2206                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2207                          */
2208                         if (btusb_find_altsetting(data, 6))
2209                                 new_alts = 6;
2210                         else if (btusb_find_altsetting(data, 3) &&
2211                                  hdev->sco_mtu >= 72 &&
2212                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2213                                 new_alts = 3;
2214                         else
2215                                 new_alts = 1;
2216                 }
2217
2218                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2219                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2220         } else {
2221                 usb_kill_anchored_urbs(&data->isoc_anchor);
2222
2223                 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2224                         __set_isoc_interface(hdev, 0);
2225
2226                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2227                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2228         }
2229 }
2230
2231 static void btusb_waker(struct work_struct *work)
2232 {
2233         struct btusb_data *data = container_of(work, struct btusb_data, waker);
2234         int err;
2235
2236         err = usb_autopm_get_interface(data->intf);
2237         if (err < 0)
2238                 return;
2239
2240         usb_autopm_put_interface(data->intf);
2241 }
2242
2243 static void btusb_rx_work(struct work_struct *work)
2244 {
2245         struct btusb_data *data = container_of(work, struct btusb_data,
2246                                                rx_work.work);
2247         struct sk_buff *skb;
2248
2249         /* Dequeue ACL data received during the interval */
2250         while ((skb = skb_dequeue(&data->acl_q)))
2251                 data->recv_acl(data->hdev, skb);
2252 }
2253
2254 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2255 {
2256         struct sk_buff *skb;
2257         u8 val = 0x00;
2258
2259         BT_DBG("%s", hdev->name);
2260
2261         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2262         if (IS_ERR(skb))
2263                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2264         else
2265                 kfree_skb(skb);
2266
2267         return 0;
2268 }
2269
2270 static int btusb_setup_csr(struct hci_dev *hdev)
2271 {
2272         struct btusb_data *data = hci_get_drvdata(hdev);
2273         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2274         struct hci_rp_read_local_version *rp;
2275         struct sk_buff *skb;
2276         bool is_fake = false;
2277         int ret;
2278
2279         BT_DBG("%s", hdev->name);
2280
2281         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2282                              HCI_INIT_TIMEOUT);
2283         if (IS_ERR(skb)) {
2284                 int err = PTR_ERR(skb);
2285                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2286                 return err;
2287         }
2288
2289         rp = skb_pull_data(skb, sizeof(*rp));
2290         if (!rp) {
2291                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2292                 kfree_skb(skb);
2293                 return -EIO;
2294         }
2295
2296         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2297                     rp->hci_ver, le16_to_cpu(rp->hci_rev));
2298
2299         bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2300                     rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2301                     le16_to_cpu(rp->manufacturer));
2302
2303         /* Detect a wide host of Chinese controllers that aren't CSR.
2304          *
2305          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2306          *
2307          * The main thing they have in common is that these are really popular low-cost
2308          * options that support newer Bluetooth versions but rely on heavy VID/PID
2309          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2310          *
2311          * We detect actual CSR devices by checking that the HCI manufacturer code
2312          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2313          * HCI rev values always match. As they both store the firmware number.
2314          */
2315         if (le16_to_cpu(rp->manufacturer) != 10 ||
2316             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2317                 is_fake = true;
2318
2319         /* Known legit CSR firmware build numbers and their supported BT versions:
2320          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2321          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2322          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2323          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2324          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2325          *
2326          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2327          *      support BT 1.1 only; so it's a dead giveaway when some
2328          *      third-party BT 4.0 dongle reuses it.
2329          */
2330         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2331                  rp->hci_ver > BLUETOOTH_VER_1_1)
2332                 is_fake = true;
2333
2334         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2335                  rp->hci_ver > BLUETOOTH_VER_1_2)
2336                 is_fake = true;
2337
2338         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2339                  rp->hci_ver > BLUETOOTH_VER_2_0)
2340                 is_fake = true;
2341
2342         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2343                  rp->hci_ver > BLUETOOTH_VER_2_1)
2344                 is_fake = true;
2345
2346         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2347                  rp->hci_ver > BLUETOOTH_VER_4_0)
2348                 is_fake = true;
2349
2350         /* Other clones which beat all the above checks */
2351         else if (bcdDevice == 0x0134 &&
2352                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2353                  rp->hci_ver == BLUETOOTH_VER_2_0)
2354                 is_fake = true;
2355
2356         if (is_fake) {
2357                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2358
2359                 /* Generally these clones have big discrepancies between
2360                  * advertised features and what's actually supported.
2361                  * Probably will need to be expanded in the future;
2362                  * without these the controller will lock up.
2363                  */
2364                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2365                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2366                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2367                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2368
2369                 /* Clear the reset quirk since this is not an actual
2370                  * early Bluetooth 1.1 device from CSR.
2371                  */
2372                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2373                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2374
2375                 /*
2376                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2377                  *
2378                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2379                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2380                  *
2381                  * These controllers are really messed-up.
2382                  *
2383                  * 1. Their bulk RX endpoint will never report any data unless
2384                  *    the device was suspended at least once (yes, really).
2385                  * 2. They will not wakeup when autosuspended and receiving data
2386                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2387                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2388                  *
2389                  * To fix 1. enable runtime-suspend, force-suspend the
2390                  * HCI and then wake-it up by disabling runtime-suspend.
2391                  *
2392                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2393                  * will still be autosuspended when it is not open.
2394                  *
2395                  * --
2396                  *
2397                  * Because these are widespread problems we prefer generic solutions; so
2398                  * apply this initialization quirk to every controller that gets here,
2399                  * it should be harmless. The alternative is to not work at all.
2400                  */
2401                 pm_runtime_allow(&data->udev->dev);
2402
2403                 ret = pm_runtime_suspend(&data->udev->dev);
2404                 if (ret >= 0)
2405                         msleep(200);
2406                 else
2407                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2408
2409                 pm_runtime_forbid(&data->udev->dev);
2410
2411                 device_set_wakeup_capable(&data->udev->dev, false);
2412
2413                 /* Re-enable autosuspend if this was requested */
2414                 if (enable_autosuspend)
2415                         usb_enable_autosuspend(data->udev);
2416         }
2417
2418         kfree_skb(skb);
2419
2420         return 0;
2421 }
2422
2423 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2424 {
2425         struct sk_buff *skb;
2426         struct hci_event_hdr *hdr;
2427         struct hci_ev_cmd_complete *evt;
2428
2429         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2430         if (!skb)
2431                 return -ENOMEM;
2432
2433         hdr = skb_put(skb, sizeof(*hdr));
2434         hdr->evt = HCI_EV_CMD_COMPLETE;
2435         hdr->plen = sizeof(*evt) + 1;
2436
2437         evt = skb_put(skb, sizeof(*evt));
2438         evt->ncmd = 0x01;
2439         evt->opcode = cpu_to_le16(opcode);
2440
2441         skb_put_u8(skb, 0x00);
2442
2443         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2444
2445         return hci_recv_frame(hdev, skb);
2446 }
2447
2448 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2449                                  int count)
2450 {
2451         struct hci_dev *hdev = data->hdev;
2452
2453         /* When the device is in bootloader mode, then it can send
2454          * events via the bulk endpoint. These events are treated the
2455          * same way as the ones received from the interrupt endpoint.
2456          */
2457         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2458                 return btusb_recv_intr(data, buffer, count);
2459
2460         return btusb_recv_bulk(data, buffer, count);
2461 }
2462
2463 static int btusb_intel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb)
2464 {
2465         struct intel_tlv *tlv = (void *)&skb->data[5];
2466
2467         /* The first event is always an event type TLV */
2468         if (tlv->type != INTEL_TLV_TYPE_ID)
2469                 goto recv_frame;
2470
2471         switch (tlv->val[0]) {
2472         case INTEL_TLV_SYSTEM_EXCEPTION:
2473         case INTEL_TLV_FATAL_EXCEPTION:
2474         case INTEL_TLV_DEBUG_EXCEPTION:
2475         case INTEL_TLV_TEST_EXCEPTION:
2476                 /* Generate devcoredump from exception */
2477                 if (!hci_devcd_init(hdev, skb->len)) {
2478                         hci_devcd_append(hdev, skb);
2479                         hci_devcd_complete(hdev);
2480                 } else {
2481                         bt_dev_err(hdev, "Failed to generate devcoredump");
2482                         kfree_skb(skb);
2483                 }
2484                 return 0;
2485         default:
2486                 bt_dev_err(hdev, "Invalid exception type %02X", tlv->val[0]);
2487         }
2488
2489 recv_frame:
2490         return hci_recv_frame(hdev, skb);
2491 }
2492
2493 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2494 {
2495         struct hci_event_hdr *hdr = (void *)skb->data;
2496         const char diagnostics_hdr[] = { 0x87, 0x80, 0x03 };
2497
2498         if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2499             hdr->plen > 0) {
2500                 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2501                 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2502
2503                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2504                         switch (skb->data[2]) {
2505                         case 0x02:
2506                                 /* When switching to the operational firmware
2507                                  * the device sends a vendor specific event
2508                                  * indicating that the bootup completed.
2509                                  */
2510                                 btintel_bootup(hdev, ptr, len);
2511                                 break;
2512                         case 0x06:
2513                                 /* When the firmware loading completes the
2514                                  * device sends out a vendor specific event
2515                                  * indicating the result of the firmware
2516                                  * loading.
2517                                  */
2518                                 btintel_secure_send_result(hdev, ptr, len);
2519                                 break;
2520                         }
2521                 }
2522
2523                 /* Handle all diagnostics events separately. May still call
2524                  * hci_recv_frame.
2525                  */
2526                 if (len >= sizeof(diagnostics_hdr) &&
2527                     memcmp(&skb->data[2], diagnostics_hdr,
2528                            sizeof(diagnostics_hdr)) == 0) {
2529                         return btusb_intel_diagnostics(hdev, skb);
2530                 }
2531         }
2532
2533         return hci_recv_frame(hdev, skb);
2534 }
2535
2536 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2537 {
2538         struct urb *urb;
2539
2540         BT_DBG("%s", hdev->name);
2541
2542         switch (hci_skb_pkt_type(skb)) {
2543         case HCI_COMMAND_PKT:
2544                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2545                         struct hci_command_hdr *cmd = (void *)skb->data;
2546                         __u16 opcode = le16_to_cpu(cmd->opcode);
2547
2548                         /* When in bootloader mode and the command 0xfc09
2549                          * is received, it needs to be send down the
2550                          * bulk endpoint. So allocate a bulk URB instead.
2551                          */
2552                         if (opcode == 0xfc09)
2553                                 urb = alloc_bulk_urb(hdev, skb);
2554                         else
2555                                 urb = alloc_ctrl_urb(hdev, skb);
2556
2557                         /* When the 0xfc01 command is issued to boot into
2558                          * the operational firmware, it will actually not
2559                          * send a command complete event. To keep the flow
2560                          * control working inject that event here.
2561                          */
2562                         if (opcode == 0xfc01)
2563                                 inject_cmd_complete(hdev, opcode);
2564                 } else {
2565                         urb = alloc_ctrl_urb(hdev, skb);
2566                 }
2567                 if (IS_ERR(urb))
2568                         return PTR_ERR(urb);
2569
2570                 hdev->stat.cmd_tx++;
2571                 return submit_or_queue_tx_urb(hdev, urb);
2572
2573         case HCI_ACLDATA_PKT:
2574                 urb = alloc_bulk_urb(hdev, skb);
2575                 if (IS_ERR(urb))
2576                         return PTR_ERR(urb);
2577
2578                 hdev->stat.acl_tx++;
2579                 return submit_or_queue_tx_urb(hdev, urb);
2580
2581         case HCI_SCODATA_PKT:
2582                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2583                         return -ENODEV;
2584
2585                 urb = alloc_isoc_urb(hdev, skb);
2586                 if (IS_ERR(urb))
2587                         return PTR_ERR(urb);
2588
2589                 hdev->stat.sco_tx++;
2590                 return submit_tx_urb(hdev, urb);
2591
2592         case HCI_ISODATA_PKT:
2593                 urb = alloc_bulk_urb(hdev, skb);
2594                 if (IS_ERR(urb))
2595                         return PTR_ERR(urb);
2596
2597                 return submit_or_queue_tx_urb(hdev, urb);
2598         }
2599
2600         return -EILSEQ;
2601 }
2602
2603 static int btusb_setup_realtek(struct hci_dev *hdev)
2604 {
2605         struct btusb_data *data = hci_get_drvdata(hdev);
2606         int ret;
2607
2608         ret = btrtl_setup_realtek(hdev);
2609
2610         if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2611                 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2612
2613         return ret;
2614 }
2615
2616 static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
2617 {
2618         if (skb->data[0] == HCI_VENDOR_PKT && skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) {
2619                 struct rtk_dev_coredump_hdr hdr = {
2620                         .code = RTK_DEVCOREDUMP_CODE_MEMDUMP,
2621                 };
2622
2623                 bt_dev_dbg(hdev, "RTL: received coredump vendor evt, len %u",
2624                         skb->len);
2625
2626                 btusb_rtl_alloc_devcoredump(hdev, &hdr, skb->data, skb->len);
2627                 kfree_skb(skb);
2628
2629                 return 0;
2630         }
2631
2632         return hci_recv_frame(hdev, skb);
2633 }
2634
2635 /* UHW CR mapping */
2636 #define MTK_BT_MISC             0x70002510
2637 #define MTK_BT_SUBSYS_RST       0x70002610
2638 #define MTK_UDMA_INT_STA_BT     0x74000024
2639 #define MTK_UDMA_INT_STA_BT1    0x74000308
2640 #define MTK_BT_WDT_STATUS       0x740003A0
2641 #define MTK_EP_RST_OPT          0x74011890
2642 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2643 #define MTK_BT_RST_DONE         0x00000100
2644 #define MTK_BT_RESET_WAIT_MS    100
2645 #define MTK_BT_RESET_NUM_TRIES  10
2646
2647 static void btusb_mtk_wmt_recv(struct urb *urb)
2648 {
2649         struct hci_dev *hdev = urb->context;
2650         struct btusb_data *data = hci_get_drvdata(hdev);
2651         struct sk_buff *skb;
2652         int err;
2653
2654         if (urb->status == 0 && urb->actual_length > 0) {
2655                 hdev->stat.byte_rx += urb->actual_length;
2656
2657                 /* WMT event shouldn't be fragmented and the size should be
2658                  * less than HCI_WMT_MAX_EVENT_SIZE.
2659                  */
2660                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2661                 if (!skb) {
2662                         hdev->stat.err_rx++;
2663                         kfree(urb->setup_packet);
2664                         return;
2665                 }
2666
2667                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2668                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2669
2670                 /* When someone waits for the WMT event, the skb is being cloned
2671                  * and being processed the events from there then.
2672                  */
2673                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2674                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2675                         if (!data->evt_skb) {
2676                                 kfree_skb(skb);
2677                                 kfree(urb->setup_packet);
2678                                 return;
2679                         }
2680                 }
2681
2682                 err = hci_recv_frame(hdev, skb);
2683                 if (err < 0) {
2684                         kfree_skb(data->evt_skb);
2685                         data->evt_skb = NULL;
2686                         kfree(urb->setup_packet);
2687                         return;
2688                 }
2689
2690                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2691                                        &data->flags)) {
2692                         /* Barrier to sync with other CPUs */
2693                         smp_mb__after_atomic();
2694                         wake_up_bit(&data->flags,
2695                                     BTUSB_TX_WAIT_VND_EVT);
2696                 }
2697                 kfree(urb->setup_packet);
2698                 return;
2699         } else if (urb->status == -ENOENT) {
2700                 /* Avoid suspend failed when usb_kill_urb */
2701                 return;
2702         }
2703
2704         usb_mark_last_busy(data->udev);
2705
2706         /* The URB complete handler is still called with urb->actual_length = 0
2707          * when the event is not available, so we should keep re-submitting
2708          * URB until WMT event returns, Also, It's necessary to wait some time
2709          * between the two consecutive control URBs to relax the target device
2710          * to generate the event. Otherwise, the WMT event cannot return from
2711          * the device successfully.
2712          */
2713         udelay(500);
2714
2715         usb_anchor_urb(urb, &data->ctrl_anchor);
2716         err = usb_submit_urb(urb, GFP_ATOMIC);
2717         if (err < 0) {
2718                 kfree(urb->setup_packet);
2719                 /* -EPERM: urb is being killed;
2720                  * -ENODEV: device got disconnected
2721                  */
2722                 if (err != -EPERM && err != -ENODEV)
2723                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2724                                    urb, -err);
2725                 usb_unanchor_urb(urb);
2726         }
2727 }
2728
2729 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2730 {
2731         struct btusb_data *data = hci_get_drvdata(hdev);
2732         struct usb_ctrlrequest *dr;
2733         unsigned char *buf;
2734         int err, size = 64;
2735         unsigned int pipe;
2736         struct urb *urb;
2737
2738         urb = usb_alloc_urb(0, GFP_KERNEL);
2739         if (!urb)
2740                 return -ENOMEM;
2741
2742         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2743         if (!dr) {
2744                 usb_free_urb(urb);
2745                 return -ENOMEM;
2746         }
2747
2748         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2749         dr->bRequest     = 1;
2750         dr->wIndex       = cpu_to_le16(0);
2751         dr->wValue       = cpu_to_le16(48);
2752         dr->wLength      = cpu_to_le16(size);
2753
2754         buf = kmalloc(size, GFP_KERNEL);
2755         if (!buf) {
2756                 kfree(dr);
2757                 usb_free_urb(urb);
2758                 return -ENOMEM;
2759         }
2760
2761         pipe = usb_rcvctrlpipe(data->udev, 0);
2762
2763         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2764                              buf, size, btusb_mtk_wmt_recv, hdev);
2765
2766         urb->transfer_flags |= URB_FREE_BUFFER;
2767
2768         usb_anchor_urb(urb, &data->ctrl_anchor);
2769         err = usb_submit_urb(urb, GFP_KERNEL);
2770         if (err < 0) {
2771                 if (err != -EPERM && err != -ENODEV)
2772                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2773                                    urb, -err);
2774                 usb_unanchor_urb(urb);
2775         }
2776
2777         usb_free_urb(urb);
2778
2779         return err;
2780 }
2781
2782 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2783                                   struct btmtk_hci_wmt_params *wmt_params)
2784 {
2785         struct btusb_data *data = hci_get_drvdata(hdev);
2786         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2787         u32 hlen, status = BTMTK_WMT_INVALID;
2788         struct btmtk_hci_wmt_evt *wmt_evt;
2789         struct btmtk_hci_wmt_cmd *wc;
2790         struct btmtk_wmt_hdr *hdr;
2791         int err;
2792
2793         /* Send the WMT command and wait until the WMT event returns */
2794         hlen = sizeof(*hdr) + wmt_params->dlen;
2795         if (hlen > 255)
2796                 return -EINVAL;
2797
2798         wc = kzalloc(hlen, GFP_KERNEL);
2799         if (!wc)
2800                 return -ENOMEM;
2801
2802         hdr = &wc->hdr;
2803         hdr->dir = 1;
2804         hdr->op = wmt_params->op;
2805         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2806         hdr->flag = wmt_params->flag;
2807         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2808
2809         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2810
2811         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2812          * it needs constantly polling control pipe until the host received the
2813          * WMT event, thus, we should require to specifically acquire PM counter
2814          * on the USB to prevent the interface from entering auto suspended
2815          * while WMT cmd/event in progress.
2816          */
2817         err = usb_autopm_get_interface(data->intf);
2818         if (err < 0)
2819                 goto err_free_wc;
2820
2821         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2822
2823         if (err < 0) {
2824                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2825                 usb_autopm_put_interface(data->intf);
2826                 goto err_free_wc;
2827         }
2828
2829         /* Submit control IN URB on demand to process the WMT event */
2830         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2831
2832         usb_autopm_put_interface(data->intf);
2833
2834         if (err < 0)
2835                 goto err_free_wc;
2836
2837         /* The vendor specific WMT commands are all answered by a vendor
2838          * specific event and will have the Command Status or Command
2839          * Complete as with usual HCI command flow control.
2840          *
2841          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2842          * state to be cleared. The driver specific event receive routine
2843          * will clear that state and with that indicate completion of the
2844          * WMT command.
2845          */
2846         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2847                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2848         if (err == -EINTR) {
2849                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2850                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2851                 goto err_free_wc;
2852         }
2853
2854         if (err) {
2855                 bt_dev_err(hdev, "Execution of wmt command timed out");
2856                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2857                 err = -ETIMEDOUT;
2858                 goto err_free_wc;
2859         }
2860
2861         /* Parse and handle the return WMT event */
2862         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2863         if (wmt_evt->whdr.op != hdr->op) {
2864                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2865                            wmt_evt->whdr.op, hdr->op);
2866                 err = -EIO;
2867                 goto err_free_skb;
2868         }
2869
2870         switch (wmt_evt->whdr.op) {
2871         case BTMTK_WMT_SEMAPHORE:
2872                 if (wmt_evt->whdr.flag == 2)
2873                         status = BTMTK_WMT_PATCH_UNDONE;
2874                 else
2875                         status = BTMTK_WMT_PATCH_DONE;
2876                 break;
2877         case BTMTK_WMT_FUNC_CTRL:
2878                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2879                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2880                         status = BTMTK_WMT_ON_DONE;
2881                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2882                         status = BTMTK_WMT_ON_PROGRESS;
2883                 else
2884                         status = BTMTK_WMT_ON_UNDONE;
2885                 break;
2886         case BTMTK_WMT_PATCH_DWNLD:
2887                 if (wmt_evt->whdr.flag == 2)
2888                         status = BTMTK_WMT_PATCH_DONE;
2889                 else if (wmt_evt->whdr.flag == 1)
2890                         status = BTMTK_WMT_PATCH_PROGRESS;
2891                 else
2892                         status = BTMTK_WMT_PATCH_UNDONE;
2893                 break;
2894         }
2895
2896         if (wmt_params->status)
2897                 *wmt_params->status = status;
2898
2899 err_free_skb:
2900         kfree_skb(data->evt_skb);
2901         data->evt_skb = NULL;
2902 err_free_wc:
2903         kfree(wc);
2904         return err;
2905 }
2906
2907 static int btusb_mtk_func_query(struct hci_dev *hdev)
2908 {
2909         struct btmtk_hci_wmt_params wmt_params;
2910         int status, err;
2911         u8 param = 0;
2912
2913         /* Query whether the function is enabled */
2914         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2915         wmt_params.flag = 4;
2916         wmt_params.dlen = sizeof(param);
2917         wmt_params.data = &param;
2918         wmt_params.status = &status;
2919
2920         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2921         if (err < 0) {
2922                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2923                 return err;
2924         }
2925
2926         return status;
2927 }
2928
2929 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2930 {
2931         struct hci_dev *hdev = data->hdev;
2932         int pipe, err;
2933         void *buf;
2934
2935         buf = kzalloc(4, GFP_KERNEL);
2936         if (!buf)
2937                 return -ENOMEM;
2938
2939         put_unaligned_le32(val, buf);
2940
2941         pipe = usb_sndctrlpipe(data->udev, 0);
2942         err = usb_control_msg(data->udev, pipe, 0x02,
2943                               0x5E,
2944                               reg >> 16, reg & 0xffff,
2945                               buf, 4, USB_CTRL_SET_TIMEOUT);
2946         if (err < 0) {
2947                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2948                 goto err_free_buf;
2949         }
2950
2951 err_free_buf:
2952         kfree(buf);
2953
2954         return err;
2955 }
2956
2957 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2958 {
2959         struct hci_dev *hdev = data->hdev;
2960         int pipe, err;
2961         void *buf;
2962
2963         buf = kzalloc(4, GFP_KERNEL);
2964         if (!buf)
2965                 return -ENOMEM;
2966
2967         pipe = usb_rcvctrlpipe(data->udev, 0);
2968         err = usb_control_msg(data->udev, pipe, 0x01,
2969                               0xDE,
2970                               reg >> 16, reg & 0xffff,
2971                               buf, 4, USB_CTRL_SET_TIMEOUT);
2972         if (err < 0) {
2973                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2974                 goto err_free_buf;
2975         }
2976
2977         *val = get_unaligned_le32(buf);
2978         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2979
2980 err_free_buf:
2981         kfree(buf);
2982
2983         return err;
2984 }
2985
2986 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2987 {
2988         int pipe, err, size = sizeof(u32);
2989         void *buf;
2990
2991         buf = kzalloc(size, GFP_KERNEL);
2992         if (!buf)
2993                 return -ENOMEM;
2994
2995         pipe = usb_rcvctrlpipe(data->udev, 0);
2996         err = usb_control_msg(data->udev, pipe, 0x63,
2997                               USB_TYPE_VENDOR | USB_DIR_IN,
2998                               reg >> 16, reg & 0xffff,
2999                               buf, size, USB_CTRL_SET_TIMEOUT);
3000         if (err < 0)
3001                 goto err_free_buf;
3002
3003         *val = get_unaligned_le32(buf);
3004
3005 err_free_buf:
3006         kfree(buf);
3007
3008         return err;
3009 }
3010
3011 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3012 {
3013         return btusb_mtk_reg_read(data, reg, id);
3014 }
3015
3016 static int btusb_mtk_setup(struct hci_dev *hdev)
3017 {
3018         struct btusb_data *data = hci_get_drvdata(hdev);
3019         struct btmtk_hci_wmt_params wmt_params;
3020         ktime_t calltime, delta, rettime;
3021         struct btmtk_tci_sleep tci_sleep;
3022         unsigned long long duration;
3023         struct sk_buff *skb;
3024         const char *fwname;
3025         int err, status;
3026         u32 dev_id;
3027         char fw_bin_name[64];
3028         u32 fw_version = 0;
3029         u8 param;
3030
3031         calltime = ktime_get();
3032
3033         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3034         if (err < 0) {
3035                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3036                 return err;
3037         }
3038
3039         if (!dev_id) {
3040                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
3041                 if (err < 0) {
3042                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
3043                         return err;
3044                 }
3045                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
3046                 if (err < 0) {
3047                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
3048                         return err;
3049                 }
3050         }
3051
3052         switch (dev_id) {
3053         case 0x7663:
3054                 fwname = FIRMWARE_MT7663;
3055                 break;
3056         case 0x7668:
3057                 fwname = FIRMWARE_MT7668;
3058                 break;
3059         case 0x7922:
3060         case 0x7961:
3061                 snprintf(fw_bin_name, sizeof(fw_bin_name),
3062                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3063                          dev_id & 0xffff, (fw_version & 0xff) + 1);
3064                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
3065                                                 btusb_mtk_hci_wmt_sync);
3066                 if (err < 0) {
3067                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
3068                         return err;
3069                 }
3070
3071                 /* It's Device EndPoint Reset Option Register */
3072                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3073
3074                 /* Enable Bluetooth protocol */
3075                 param = 1;
3076                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3077                 wmt_params.flag = 0;
3078                 wmt_params.dlen = sizeof(param);
3079                 wmt_params.data = &param;
3080                 wmt_params.status = NULL;
3081
3082                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3083                 if (err < 0) {
3084                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3085                         return err;
3086                 }
3087
3088                 hci_set_msft_opcode(hdev, 0xFD30);
3089                 hci_set_aosp_capable(hdev);
3090                 goto done;
3091         default:
3092                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
3093                            dev_id);
3094                 return -ENODEV;
3095         }
3096
3097         /* Query whether the firmware is already download */
3098         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3099         wmt_params.flag = 1;
3100         wmt_params.dlen = 0;
3101         wmt_params.data = NULL;
3102         wmt_params.status = &status;
3103
3104         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3105         if (err < 0) {
3106                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3107                 return err;
3108         }
3109
3110         if (status == BTMTK_WMT_PATCH_DONE) {
3111                 bt_dev_info(hdev, "firmware already downloaded");
3112                 goto ignore_setup_fw;
3113         }
3114
3115         /* Setup a firmware which the device definitely requires */
3116         err = btmtk_setup_firmware(hdev, fwname,
3117                                    btusb_mtk_hci_wmt_sync);
3118         if (err < 0)
3119                 return err;
3120
3121 ignore_setup_fw:
3122         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3123                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3124                                  2000, 5000000);
3125         /* -ETIMEDOUT happens */
3126         if (err < 0)
3127                 return err;
3128
3129         /* The other errors happen in btusb_mtk_func_query */
3130         if (status < 0)
3131                 return status;
3132
3133         if (status == BTMTK_WMT_ON_DONE) {
3134                 bt_dev_info(hdev, "function already on");
3135                 goto ignore_func_on;
3136         }
3137
3138         /* Enable Bluetooth protocol */
3139         param = 1;
3140         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3141         wmt_params.flag = 0;
3142         wmt_params.dlen = sizeof(param);
3143         wmt_params.data = &param;
3144         wmt_params.status = NULL;
3145
3146         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3147         if (err < 0) {
3148                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3149                 return err;
3150         }
3151
3152 ignore_func_on:
3153         /* Apply the low power environment setup */
3154         tci_sleep.mode = 0x5;
3155         tci_sleep.duration = cpu_to_le16(0x640);
3156         tci_sleep.host_duration = cpu_to_le16(0x640);
3157         tci_sleep.host_wakeup_pin = 0;
3158         tci_sleep.time_compensation = 0;
3159
3160         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3161                              HCI_INIT_TIMEOUT);
3162         if (IS_ERR(skb)) {
3163                 err = PTR_ERR(skb);
3164                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3165                 return err;
3166         }
3167         kfree_skb(skb);
3168
3169 done:
3170         rettime = ktime_get();
3171         delta = ktime_sub(rettime, calltime);
3172         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3173
3174         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3175
3176         return 0;
3177 }
3178
3179 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3180 {
3181         struct btmtk_hci_wmt_params wmt_params;
3182         u8 param = 0;
3183         int err;
3184
3185         /* Disable the device */
3186         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3187         wmt_params.flag = 0;
3188         wmt_params.dlen = sizeof(param);
3189         wmt_params.data = &param;
3190         wmt_params.status = NULL;
3191
3192         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3193         if (err < 0) {
3194                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3195                 return err;
3196         }
3197
3198         return 0;
3199 }
3200
3201 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3202 {
3203         struct btusb_data *data = hci_get_drvdata(hdev);
3204         u32 val;
3205         int err, retry = 0;
3206
3207         /* It's MediaTek specific bluetooth reset mechanism via USB */
3208         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3209                 bt_dev_err(hdev, "last reset failed? Not resetting again");
3210                 return;
3211         }
3212
3213         err = usb_autopm_get_interface(data->intf);
3214         if (err < 0)
3215                 return;
3216
3217         btusb_stop_traffic(data);
3218         usb_kill_anchored_urbs(&data->tx_anchor);
3219
3220         /* It's Device EndPoint Reset Option Register */
3221         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3222         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3223         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3224
3225         /* Reset the bluetooth chip via USB interface. */
3226         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3227         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3228         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3229         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3230         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3231         /* MT7921 need to delay 20ms between toggle reset bit */
3232         msleep(20);
3233         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3234         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3235
3236         /* Poll the register until reset is completed */
3237         do {
3238                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3239                 if (val & MTK_BT_RST_DONE) {
3240                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3241                         break;
3242                 }
3243
3244                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3245                 retry++;
3246                 msleep(MTK_BT_RESET_WAIT_MS);
3247         } while (retry < MTK_BT_RESET_NUM_TRIES);
3248
3249         btusb_mtk_id_get(data, 0x70010200, &val);
3250         if (!val)
3251                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3252
3253         usb_queue_reset_device(data->intf);
3254
3255         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3256 }
3257
3258 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3259 {
3260         struct btusb_data *data = hci_get_drvdata(hdev);
3261         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3262
3263         switch (handle) {
3264         case 0xfc6f:            /* Firmware dump from device */
3265                 /* When the firmware hangs, the device can no longer
3266                  * suspend and thus disable auto-suspend.
3267                  */
3268                 usb_disable_autosuspend(data->udev);
3269                 fallthrough;
3270         case 0x05ff:            /* Firmware debug logging 1 */
3271         case 0x05fe:            /* Firmware debug logging 2 */
3272                 return hci_recv_diag(hdev, skb);
3273         }
3274
3275         return hci_recv_frame(hdev, skb);
3276 }
3277
3278 #ifdef CONFIG_PM
3279 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3280 static int marvell_config_oob_wake(struct hci_dev *hdev)
3281 {
3282         struct sk_buff *skb;
3283         struct btusb_data *data = hci_get_drvdata(hdev);
3284         struct device *dev = &data->udev->dev;
3285         u16 pin, gap, opcode;
3286         int ret;
3287         u8 cmd[5];
3288
3289         /* Move on if no wakeup pin specified */
3290         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3291             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3292                 return 0;
3293
3294         /* Vendor specific command to configure a GPIO as wake-up pin */
3295         opcode = hci_opcode_pack(0x3F, 0x59);
3296         cmd[0] = opcode & 0xFF;
3297         cmd[1] = opcode >> 8;
3298         cmd[2] = 2; /* length of parameters that follow */
3299         cmd[3] = pin;
3300         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3301
3302         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3303         if (!skb) {
3304                 bt_dev_err(hdev, "%s: No memory", __func__);
3305                 return -ENOMEM;
3306         }
3307
3308         skb_put_data(skb, cmd, sizeof(cmd));
3309         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3310
3311         ret = btusb_send_frame(hdev, skb);
3312         if (ret) {
3313                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3314                 kfree_skb(skb);
3315                 return ret;
3316         }
3317
3318         return 0;
3319 }
3320 #endif
3321
3322 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3323                                     const bdaddr_t *bdaddr)
3324 {
3325         struct sk_buff *skb;
3326         u8 buf[8];
3327         long ret;
3328
3329         buf[0] = 0xfe;
3330         buf[1] = sizeof(bdaddr_t);
3331         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3332
3333         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3334         if (IS_ERR(skb)) {
3335                 ret = PTR_ERR(skb);
3336                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3337                            ret);
3338                 return ret;
3339         }
3340         kfree_skb(skb);
3341
3342         return 0;
3343 }
3344
3345 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3346                                     const bdaddr_t *bdaddr)
3347 {
3348         struct sk_buff *skb;
3349         u8 buf[10];
3350         long ret;
3351
3352         buf[0] = 0x01;
3353         buf[1] = 0x01;
3354         buf[2] = 0x00;
3355         buf[3] = sizeof(bdaddr_t);
3356         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3357
3358         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3359         if (IS_ERR(skb)) {
3360                 ret = PTR_ERR(skb);
3361                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3362                 return ret;
3363         }
3364         kfree_skb(skb);
3365
3366         return 0;
3367 }
3368
3369 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3370                                 const bdaddr_t *bdaddr)
3371 {
3372         struct sk_buff *skb;
3373         u8 buf[6];
3374         long ret;
3375
3376         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3377
3378         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3379                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3380         if (IS_ERR(skb)) {
3381                 ret = PTR_ERR(skb);
3382                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3383                 return ret;
3384         }
3385         kfree_skb(skb);
3386
3387         return 0;
3388 }
3389
3390 #define QCA_MEMDUMP_ACL_HANDLE 0x2EDD
3391 #define QCA_MEMDUMP_SIZE_MAX  0x100000
3392 #define QCA_MEMDUMP_VSE_CLASS 0x01
3393 #define QCA_MEMDUMP_MSG_TYPE 0x08
3394 #define QCA_MEMDUMP_PKT_SIZE 248
3395 #define QCA_LAST_SEQUENCE_NUM 0xffff
3396
3397 struct qca_dump_hdr {
3398         u8 vse_class;
3399         u8 msg_type;
3400         __le16 seqno;
3401         u8 reserved;
3402         union {
3403                 u8 data[0];
3404                 struct {
3405                         __le32 ram_dump_size;
3406                         u8 data0[0];
3407                 } __packed;
3408         };
3409 } __packed;
3410
3411
3412 static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb)
3413 {
3414         char buf[128];
3415         struct btusb_data *btdata = hci_get_drvdata(hdev);
3416
3417         snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n",
3418                         btdata->qca_dump.controller_id);
3419         skb_put_data(skb, buf, strlen(buf));
3420
3421         snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n",
3422                         btdata->qca_dump.fw_version);
3423         skb_put_data(skb, buf, strlen(buf));
3424
3425         snprintf(buf, sizeof(buf), "Driver: %s\nVendor: qca\n",
3426                         btusb_driver.name);
3427         skb_put_data(skb, buf, strlen(buf));
3428
3429         snprintf(buf, sizeof(buf), "VID: 0x%x\nPID:0x%x\n",
3430                         btdata->qca_dump.id_vendor, btdata->qca_dump.id_product);
3431         skb_put_data(skb, buf, strlen(buf));
3432
3433         snprintf(buf, sizeof(buf), "Lmp Subversion: 0x%x\n",
3434                         hdev->lmp_subver);
3435         skb_put_data(skb, buf, strlen(buf));
3436 }
3437
3438 static void btusb_coredump_qca(struct hci_dev *hdev)
3439 {
3440         static const u8 param[] = { 0x26 };
3441         struct sk_buff *skb;
3442
3443         skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT);
3444         if (IS_ERR(skb))
3445                 bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb));
3446         kfree_skb(skb);
3447 }
3448
3449 /*
3450  * ==0: not a dump pkt.
3451  * < 0: fails to handle a dump pkt
3452  * > 0: otherwise.
3453  */
3454 static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3455 {
3456         int ret = 1;
3457         u8 pkt_type;
3458         u8 *sk_ptr;
3459         unsigned int sk_len;
3460         u16 seqno;
3461         u32 dump_size;
3462
3463         struct hci_event_hdr *event_hdr;
3464         struct hci_acl_hdr *acl_hdr;
3465         struct qca_dump_hdr *dump_hdr;
3466         struct btusb_data *btdata = hci_get_drvdata(hdev);
3467         struct usb_device *udev = btdata->udev;
3468
3469         pkt_type = hci_skb_pkt_type(skb);
3470         sk_ptr = skb->data;
3471         sk_len = skb->len;
3472
3473         if (pkt_type == HCI_ACLDATA_PKT) {
3474                 acl_hdr = hci_acl_hdr(skb);
3475                 if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE)
3476                         return 0;
3477                 sk_ptr += HCI_ACL_HDR_SIZE;
3478                 sk_len -= HCI_ACL_HDR_SIZE;
3479                 event_hdr = (struct hci_event_hdr *)sk_ptr;
3480         } else {
3481                 event_hdr = hci_event_hdr(skb);
3482         }
3483
3484         if ((event_hdr->evt != HCI_VENDOR_PKT)
3485                 || (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
3486                 return 0;
3487
3488         sk_ptr += HCI_EVENT_HDR_SIZE;
3489         sk_len -= HCI_EVENT_HDR_SIZE;
3490
3491         dump_hdr = (struct qca_dump_hdr *)sk_ptr;
3492         if ((sk_len < offsetof(struct qca_dump_hdr, data))
3493                 || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS)
3494             || (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
3495                 return 0;
3496
3497         /*it is dump pkt now*/
3498         seqno = le16_to_cpu(dump_hdr->seqno);
3499         if (seqno == 0) {
3500                 set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3501                 dump_size = le32_to_cpu(dump_hdr->ram_dump_size);
3502                 if (!dump_size || (dump_size > QCA_MEMDUMP_SIZE_MAX)) {
3503                         ret = -EILSEQ;
3504                         bt_dev_err(hdev, "Invalid memdump size(%u)",
3505                                    dump_size);
3506                         goto out;
3507                 }
3508
3509                 ret = hci_devcd_init(hdev, dump_size);
3510                 if (ret < 0) {
3511                         bt_dev_err(hdev, "memdump init error(%d)", ret);
3512                         goto out;
3513                 }
3514
3515                 btdata->qca_dump.ram_dump_size = dump_size;
3516                 btdata->qca_dump.ram_dump_seqno = 0;
3517                 sk_ptr += offsetof(struct qca_dump_hdr, data0);
3518                 sk_len -= offsetof(struct qca_dump_hdr, data0);
3519
3520                 usb_disable_autosuspend(udev);
3521                 bt_dev_info(hdev, "%s memdump size(%u)\n",
3522                             (pkt_type == HCI_ACLDATA_PKT) ? "ACL" : "event",
3523                             dump_size);
3524         } else {
3525                 sk_ptr += offsetof(struct qca_dump_hdr, data);
3526                 sk_len -= offsetof(struct qca_dump_hdr, data);
3527         }
3528
3529         if (!btdata->qca_dump.ram_dump_size) {
3530                 ret = -EINVAL;
3531                 bt_dev_err(hdev, "memdump is not active");
3532                 goto out;
3533         }
3534
3535         if ((seqno > btdata->qca_dump.ram_dump_seqno + 1) && (seqno != QCA_LAST_SEQUENCE_NUM)) {
3536                 dump_size = QCA_MEMDUMP_PKT_SIZE * (seqno - btdata->qca_dump.ram_dump_seqno - 1);
3537                 hci_devcd_append_pattern(hdev, 0x0, dump_size);
3538                 bt_dev_err(hdev,
3539                            "expected memdump seqno(%u) is not received(%u)\n",
3540                            btdata->qca_dump.ram_dump_seqno, seqno);
3541                 btdata->qca_dump.ram_dump_seqno = seqno;
3542                 kfree_skb(skb);
3543                 return ret;
3544         }
3545
3546         skb_pull(skb, skb->len - sk_len);
3547         hci_devcd_append(hdev, skb);
3548         btdata->qca_dump.ram_dump_seqno++;
3549         if (seqno == QCA_LAST_SEQUENCE_NUM) {
3550                 bt_dev_info(hdev,
3551                                 "memdump done: pkts(%u), total(%u)\n",
3552                                 btdata->qca_dump.ram_dump_seqno, btdata->qca_dump.ram_dump_size);
3553
3554                 hci_devcd_complete(hdev);
3555                 goto out;
3556         }
3557         return ret;
3558
3559 out:
3560         if (btdata->qca_dump.ram_dump_size)
3561                 usb_enable_autosuspend(udev);
3562         btdata->qca_dump.ram_dump_size = 0;
3563         btdata->qca_dump.ram_dump_seqno = 0;
3564         clear_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3565
3566         if (ret < 0)
3567                 kfree_skb(skb);
3568         return ret;
3569 }
3570
3571 static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb)
3572 {
3573         if (handle_dump_pkt_qca(hdev, skb))
3574                 return 0;
3575         return hci_recv_frame(hdev, skb);
3576 }
3577
3578 static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3579 {
3580         if (handle_dump_pkt_qca(hdev, skb))
3581                 return 0;
3582         return hci_recv_frame(hdev, skb);
3583 }
3584
3585
3586 #define QCA_DFU_PACKET_LEN      4096
3587
3588 #define QCA_GET_TARGET_VERSION  0x09
3589 #define QCA_CHECK_STATUS        0x05
3590 #define QCA_DFU_DOWNLOAD        0x01
3591
3592 #define QCA_SYSCFG_UPDATED      0x40
3593 #define QCA_PATCH_UPDATED       0x80
3594 #define QCA_DFU_TIMEOUT         3000
3595 #define QCA_FLAG_MULTI_NVM      0x80
3596 #define QCA_BT_RESET_WAIT_MS    100
3597
3598 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3599 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3600
3601 struct qca_version {
3602         __le32  rom_version;
3603         __le32  patch_version;
3604         __le32  ram_version;
3605         __u8    chip_id;
3606         __u8    platform_id;
3607         __le16  flag;
3608         __u8    reserved[4];
3609 } __packed;
3610
3611 struct qca_rampatch_version {
3612         __le16  rom_version_high;
3613         __le16  rom_version_low;
3614         __le16  patch_version;
3615 } __packed;
3616
3617 struct qca_device_info {
3618         u32     rom_version;
3619         u8      rampatch_hdr;   /* length of header in rampatch */
3620         u8      nvm_hdr;        /* length of header in NVM */
3621         u8      ver_offset;     /* offset of version structure in rampatch */
3622 };
3623
3624 static const struct qca_device_info qca_devices_table[] = {
3625         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3626         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3627         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3628         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3629         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3630         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3631         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3632         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3633         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3634         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3635 };
3636
3637 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3638                                      void *data, u16 size)
3639 {
3640         int pipe, err;
3641         u8 *buf;
3642
3643         buf = kmalloc(size, GFP_KERNEL);
3644         if (!buf)
3645                 return -ENOMEM;
3646
3647         /* Found some of USB hosts have IOT issues with ours so that we should
3648          * not wait until HCI layer is ready.
3649          */
3650         pipe = usb_rcvctrlpipe(udev, 0);
3651         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3652                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3653         if (err < 0) {
3654                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3655                 goto done;
3656         }
3657
3658         memcpy(data, buf, size);
3659
3660 done:
3661         kfree(buf);
3662
3663         return err;
3664 }
3665
3666 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3667                                        const struct firmware *firmware,
3668                                        size_t hdr_size)
3669 {
3670         struct btusb_data *btdata = hci_get_drvdata(hdev);
3671         struct usb_device *udev = btdata->udev;
3672         size_t count, size, sent = 0;
3673         int pipe, len, err;
3674         u8 *buf;
3675
3676         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3677         if (!buf)
3678                 return -ENOMEM;
3679
3680         count = firmware->size;
3681
3682         size = min_t(size_t, count, hdr_size);
3683         memcpy(buf, firmware->data, size);
3684
3685         /* USB patches should go down to controller through USB path
3686          * because binary format fits to go down through USB channel.
3687          * USB control path is for patching headers and USB bulk is for
3688          * patch body.
3689          */
3690         pipe = usb_sndctrlpipe(udev, 0);
3691         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3692                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3693         if (err < 0) {
3694                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3695                 goto done;
3696         }
3697
3698         sent += size;
3699         count -= size;
3700
3701         /* ep2 need time to switch from function acl to function dfu,
3702          * so we add 20ms delay here.
3703          */
3704         msleep(20);
3705
3706         while (count) {
3707                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3708
3709                 memcpy(buf, firmware->data + sent, size);
3710
3711                 pipe = usb_sndbulkpipe(udev, 0x02);
3712                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3713                                    QCA_DFU_TIMEOUT);
3714                 if (err < 0) {
3715                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3716                                    sent, firmware->size, err);
3717                         break;
3718                 }
3719
3720                 if (size != len) {
3721                         bt_dev_err(hdev, "Failed to get bulk buffer");
3722                         err = -EILSEQ;
3723                         break;
3724                 }
3725
3726                 sent  += size;
3727                 count -= size;
3728         }
3729
3730 done:
3731         kfree(buf);
3732         return err;
3733 }
3734
3735 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3736                                          struct qca_version *ver,
3737                                          const struct qca_device_info *info)
3738 {
3739         struct qca_rampatch_version *rver;
3740         const struct firmware *fw;
3741         u32 ver_rom, ver_patch, rver_rom;
3742         u16 rver_rom_low, rver_rom_high, rver_patch;
3743         char fwname[64];
3744         int err;
3745
3746         ver_rom = le32_to_cpu(ver->rom_version);
3747         ver_patch = le32_to_cpu(ver->patch_version);
3748
3749         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3750
3751         err = request_firmware(&fw, fwname, &hdev->dev);
3752         if (err) {
3753                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3754                            fwname, err);
3755                 return err;
3756         }
3757
3758         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3759
3760         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3761         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3762         rver_patch = le16_to_cpu(rver->patch_version);
3763
3764         if (ver_rom & ~0xffffU) {
3765                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3766                 rver_rom = rver_rom_high << 16 | rver_rom_low;
3767         } else {
3768                 rver_rom = rver_rom_low;
3769         }
3770
3771         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3772                     "firmware rome 0x%x build 0x%x",
3773                     rver_rom, rver_patch, ver_rom, ver_patch);
3774
3775         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3776                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3777                 err = -EINVAL;
3778                 goto done;
3779         }
3780
3781         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3782
3783 done:
3784         release_firmware(fw);
3785
3786         return err;
3787 }
3788
3789 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3790                                         const struct qca_version *ver)
3791 {
3792         u32 rom_version = le32_to_cpu(ver->rom_version);
3793         u16 flag = le16_to_cpu(ver->flag);
3794
3795         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3796                 /* The board_id should be split into two bytes
3797                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3798                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3799                  * we have several platforms, and platform IDs are continuously added
3800                  * Platform ID:
3801                  * 0x00 is for Mobile
3802                  * 0x01 is for X86
3803                  * 0x02 is for Automotive
3804                  * 0x03 is for Consumer electronic
3805                  */
3806                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3807                 const char *variant;
3808
3809                 switch (le32_to_cpu(ver->ram_version)) {
3810                 case WCN6855_2_0_RAM_VERSION_GF:
3811                 case WCN6855_2_1_RAM_VERSION_GF:
3812                         variant = "_gf";
3813                         break;
3814                 default:
3815                         variant = "";
3816                         break;
3817                 }
3818
3819                 if (board_id == 0) {
3820                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3821                                 rom_version, variant);
3822                 } else {
3823                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3824                                 rom_version, variant, board_id);
3825                 }
3826         } else {
3827                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3828                         rom_version);
3829         }
3830
3831 }
3832
3833 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3834                                     struct qca_version *ver,
3835                                     const struct qca_device_info *info)
3836 {
3837         const struct firmware *fw;
3838         char fwname[64];
3839         int err;
3840
3841         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3842
3843         err = request_firmware(&fw, fwname, &hdev->dev);
3844         if (err) {
3845                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3846                            fwname, err);
3847                 return err;
3848         }
3849
3850         bt_dev_info(hdev, "using NVM file: %s", fwname);
3851
3852         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3853
3854         release_firmware(fw);
3855
3856         return err;
3857 }
3858
3859 /* identify the ROM version and check whether patches are needed */
3860 static bool btusb_qca_need_patch(struct usb_device *udev)
3861 {
3862         struct qca_version ver;
3863
3864         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3865                                       sizeof(ver)) < 0)
3866                 return false;
3867         /* only low ROM versions need patches */
3868         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3869 }
3870
3871 static int btusb_setup_qca(struct hci_dev *hdev)
3872 {
3873         struct btusb_data *btdata = hci_get_drvdata(hdev);
3874         struct usb_device *udev = btdata->udev;
3875         const struct qca_device_info *info = NULL;
3876         struct qca_version ver;
3877         u32 ver_rom;
3878         u8 status;
3879         int i, err;
3880
3881         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3882                                         sizeof(ver));
3883         if (err < 0)
3884                 return err;
3885
3886         ver_rom = le32_to_cpu(ver.rom_version);
3887
3888         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3889                 if (ver_rom == qca_devices_table[i].rom_version)
3890                         info = &qca_devices_table[i];
3891         }
3892         if (!info) {
3893                 /* If the rom_version is not matched in the qca_devices_table
3894                  * and the high ROM version is not zero, we assume this chip no
3895                  * need to load the rampatch and nvm.
3896                  */
3897                 if (ver_rom & ~0xffffU)
3898                         return 0;
3899
3900                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3901                 return -ENODEV;
3902         }
3903
3904         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3905                                         sizeof(status));
3906         if (err < 0)
3907                 return err;
3908
3909         if (!(status & QCA_PATCH_UPDATED)) {
3910                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3911                 if (err < 0)
3912                         return err;
3913         }
3914
3915         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3916                                         sizeof(ver));
3917         if (err < 0)
3918                 return err;
3919
3920         btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version);
3921         btdata->qca_dump.controller_id = le32_to_cpu(ver.rom_version);
3922
3923         if (!(status & QCA_SYSCFG_UPDATED)) {
3924                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3925                 if (err < 0)
3926                         return err;
3927
3928                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3929                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3930                  * cause potential enable failure.
3931                  */
3932                 if (info->rom_version >= 0x00130201)
3933                         msleep(QCA_BT_RESET_WAIT_MS);
3934         }
3935
3936         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3937          * work with the likes of HSP/HFP mSBC.
3938          */
3939         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3940
3941         return 0;
3942 }
3943
3944 static inline int __set_diag_interface(struct hci_dev *hdev)
3945 {
3946         struct btusb_data *data = hci_get_drvdata(hdev);
3947         struct usb_interface *intf = data->diag;
3948         int i;
3949
3950         if (!data->diag)
3951                 return -ENODEV;
3952
3953         data->diag_tx_ep = NULL;
3954         data->diag_rx_ep = NULL;
3955
3956         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3957                 struct usb_endpoint_descriptor *ep_desc;
3958
3959                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3960
3961                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3962                         data->diag_tx_ep = ep_desc;
3963                         continue;
3964                 }
3965
3966                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3967                         data->diag_rx_ep = ep_desc;
3968                         continue;
3969                 }
3970         }
3971
3972         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3973                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3974                 return -ENODEV;
3975         }
3976
3977         return 0;
3978 }
3979
3980 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3981 {
3982         struct btusb_data *data = hci_get_drvdata(hdev);
3983         struct sk_buff *skb;
3984         struct urb *urb;
3985         unsigned int pipe;
3986
3987         if (!data->diag_tx_ep)
3988                 return ERR_PTR(-ENODEV);
3989
3990         urb = usb_alloc_urb(0, GFP_KERNEL);
3991         if (!urb)
3992                 return ERR_PTR(-ENOMEM);
3993
3994         skb = bt_skb_alloc(2, GFP_KERNEL);
3995         if (!skb) {
3996                 usb_free_urb(urb);
3997                 return ERR_PTR(-ENOMEM);
3998         }
3999
4000         skb_put_u8(skb, 0xf0);
4001         skb_put_u8(skb, enable);
4002
4003         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4004
4005         usb_fill_bulk_urb(urb, data->udev, pipe,
4006                           skb->data, skb->len, btusb_tx_complete, skb);
4007
4008         skb->dev = (void *)hdev;
4009
4010         return urb;
4011 }
4012
4013 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4014 {
4015         struct btusb_data *data = hci_get_drvdata(hdev);
4016         struct urb *urb;
4017
4018         if (!data->diag)
4019                 return -ENODEV;
4020
4021         if (!test_bit(HCI_RUNNING, &hdev->flags))
4022                 return -ENETDOWN;
4023
4024         urb = alloc_diag_urb(hdev, enable);
4025         if (IS_ERR(urb))
4026                 return PTR_ERR(urb);
4027
4028         return submit_or_queue_tx_urb(hdev, urb);
4029 }
4030
4031 #ifdef CONFIG_PM
4032 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4033 {
4034         struct btusb_data *data = priv;
4035
4036         pm_wakeup_event(&data->udev->dev, 0);
4037         pm_system_wakeup();
4038
4039         /* Disable only if not already disabled (keep it balanced) */
4040         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4041                 disable_irq_nosync(irq);
4042                 disable_irq_wake(irq);
4043         }
4044         return IRQ_HANDLED;
4045 }
4046
4047 static const struct of_device_id btusb_match_table[] = {
4048         { .compatible = "usb1286,204e" },
4049         { .compatible = "usbcf3,e300" }, /* QCA6174A */
4050         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4051         { }
4052 };
4053 MODULE_DEVICE_TABLE(of, btusb_match_table);
4054
4055 /* Use an oob wakeup pin? */
4056 static int btusb_config_oob_wake(struct hci_dev *hdev)
4057 {
4058         struct btusb_data *data = hci_get_drvdata(hdev);
4059         struct device *dev = &data->udev->dev;
4060         int irq, ret;
4061
4062         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4063
4064         if (!of_match_device(btusb_match_table, dev))
4065                 return 0;
4066
4067         /* Move on if no IRQ specified */
4068         irq = of_irq_get_byname(dev->of_node, "wakeup");
4069         if (irq <= 0) {
4070                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4071                 return 0;
4072         }
4073
4074         irq_set_status_flags(irq, IRQ_NOAUTOEN);
4075         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4076                                0, "OOB Wake-on-BT", data);
4077         if (ret) {
4078                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4079                 return ret;
4080         }
4081
4082         ret = device_init_wakeup(dev, true);
4083         if (ret) {
4084                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4085                 return ret;
4086         }
4087
4088         data->oob_wake_irq = irq;
4089         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4090         return 0;
4091 }
4092 #endif
4093
4094 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4095 {
4096         if (dmi_check_system(btusb_needs_reset_resume_table))
4097                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4098 }
4099
4100 static bool btusb_wakeup(struct hci_dev *hdev)
4101 {
4102         struct btusb_data *data = hci_get_drvdata(hdev);
4103
4104         return device_may_wakeup(&data->udev->dev);
4105 }
4106
4107 static int btusb_shutdown_qca(struct hci_dev *hdev)
4108 {
4109         struct sk_buff *skb;
4110
4111         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4112         if (IS_ERR(skb)) {
4113                 bt_dev_err(hdev, "HCI reset during shutdown failed");
4114                 return PTR_ERR(skb);
4115         }
4116         kfree_skb(skb);
4117
4118         return 0;
4119 }
4120
4121 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
4122                                     size_t count, loff_t *ppos)
4123 {
4124         struct btusb_data *data = file->private_data;
4125         char buf[3];
4126
4127         buf[0] = data->poll_sync ? 'Y' : 'N';
4128         buf[1] = '\n';
4129         buf[2] = '\0';
4130         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
4131 }
4132
4133 static ssize_t force_poll_sync_write(struct file *file,
4134                                      const char __user *user_buf,
4135                                      size_t count, loff_t *ppos)
4136 {
4137         struct btusb_data *data = file->private_data;
4138         bool enable;
4139         int err;
4140
4141         err = kstrtobool_from_user(user_buf, count, &enable);
4142         if (err)
4143                 return err;
4144
4145         /* Only allow changes while the adapter is down */
4146         if (test_bit(HCI_UP, &data->hdev->flags))
4147                 return -EPERM;
4148
4149         if (data->poll_sync == enable)
4150                 return -EALREADY;
4151
4152         data->poll_sync = enable;
4153
4154         return count;
4155 }
4156
4157 static const struct file_operations force_poll_sync_fops = {
4158         .open           = simple_open,
4159         .read           = force_poll_sync_read,
4160         .write          = force_poll_sync_write,
4161         .llseek         = default_llseek,
4162 };
4163
4164 static int btusb_probe(struct usb_interface *intf,
4165                        const struct usb_device_id *id)
4166 {
4167         struct usb_endpoint_descriptor *ep_desc;
4168         struct gpio_desc *reset_gpio;
4169         struct btusb_data *data;
4170         struct hci_dev *hdev;
4171         unsigned ifnum_base;
4172         int i, err, priv_size;
4173
4174         BT_DBG("intf %p id %p", intf, id);
4175
4176         if ((id->driver_info & BTUSB_IFNUM_2) &&
4177             (intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
4178             (intf->cur_altsetting->desc.bInterfaceNumber != 2))
4179                 return -ENODEV;
4180
4181         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4182
4183         if (!id->driver_info) {
4184                 const struct usb_device_id *match;
4185
4186                 match = usb_match_id(intf, blacklist_table);
4187                 if (match)
4188                         id = match;
4189         }
4190
4191         if (id->driver_info == BTUSB_IGNORE)
4192                 return -ENODEV;
4193
4194         if (id->driver_info & BTUSB_ATH3012) {
4195                 struct usb_device *udev = interface_to_usbdev(intf);
4196
4197                 /* Old firmware would otherwise let ath3k driver load
4198                  * patch and sysconfig files
4199                  */
4200                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4201                     !btusb_qca_need_patch(udev))
4202                         return -ENODEV;
4203         }
4204
4205         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4206         if (!data)
4207                 return -ENOMEM;
4208
4209         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4210                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4211
4212                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4213                         data->intr_ep = ep_desc;
4214                         continue;
4215                 }
4216
4217                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4218                         data->bulk_tx_ep = ep_desc;
4219                         continue;
4220                 }
4221
4222                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4223                         data->bulk_rx_ep = ep_desc;
4224                         continue;
4225                 }
4226         }
4227
4228         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4229                 return -ENODEV;
4230
4231         if (id->driver_info & BTUSB_AMP) {
4232                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4233                 data->cmdreq = 0x2b;
4234         } else {
4235                 data->cmdreq_type = USB_TYPE_CLASS;
4236                 data->cmdreq = 0x00;
4237         }
4238
4239         data->udev = interface_to_usbdev(intf);
4240         data->intf = intf;
4241
4242         INIT_WORK(&data->work, btusb_work);
4243         INIT_WORK(&data->waker, btusb_waker);
4244         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
4245
4246         skb_queue_head_init(&data->acl_q);
4247
4248         init_usb_anchor(&data->deferred);
4249         init_usb_anchor(&data->tx_anchor);
4250         spin_lock_init(&data->txlock);
4251
4252         init_usb_anchor(&data->intr_anchor);
4253         init_usb_anchor(&data->bulk_anchor);
4254         init_usb_anchor(&data->isoc_anchor);
4255         init_usb_anchor(&data->diag_anchor);
4256         init_usb_anchor(&data->ctrl_anchor);
4257         spin_lock_init(&data->rxlock);
4258
4259         priv_size = 0;
4260
4261         data->recv_event = hci_recv_frame;
4262         data->recv_bulk = btusb_recv_bulk;
4263
4264         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4265                 /* Allocate extra space for Intel device */
4266                 priv_size += sizeof(struct btintel_data);
4267
4268                 /* Override the rx handlers */
4269                 data->recv_event = btusb_recv_event_intel;
4270                 data->recv_bulk = btusb_recv_bulk_intel;
4271         } else if (id->driver_info & BTUSB_REALTEK) {
4272                 /* Allocate extra space for Realtek device */
4273                 priv_size += sizeof(struct btrealtek_data);
4274
4275                 data->recv_event = btusb_recv_event_realtek;
4276         }
4277
4278         data->recv_acl = hci_recv_frame;
4279
4280         hdev = hci_alloc_dev_priv(priv_size);
4281         if (!hdev)
4282                 return -ENOMEM;
4283
4284         hdev->bus = HCI_USB;
4285         hci_set_drvdata(hdev, data);
4286
4287         if (id->driver_info & BTUSB_AMP)
4288                 hdev->dev_type = HCI_AMP;
4289         else
4290                 hdev->dev_type = HCI_PRIMARY;
4291
4292         data->hdev = hdev;
4293
4294         SET_HCIDEV_DEV(hdev, &intf->dev);
4295
4296         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4297                                         GPIOD_OUT_LOW);
4298         if (IS_ERR(reset_gpio)) {
4299                 err = PTR_ERR(reset_gpio);
4300                 goto out_free_dev;
4301         } else if (reset_gpio) {
4302                 data->reset_gpio = reset_gpio;
4303         }
4304
4305         hdev->open   = btusb_open;
4306         hdev->close  = btusb_close;
4307         hdev->flush  = btusb_flush;
4308         hdev->send   = btusb_send_frame;
4309         hdev->notify = btusb_notify;
4310         hdev->wakeup = btusb_wakeup;
4311
4312 #ifdef CONFIG_PM
4313         err = btusb_config_oob_wake(hdev);
4314         if (err)
4315                 goto out_free_dev;
4316
4317         /* Marvell devices may need a specific chip configuration */
4318         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4319                 err = marvell_config_oob_wake(hdev);
4320                 if (err)
4321                         goto out_free_dev;
4322         }
4323 #endif
4324         if (id->driver_info & BTUSB_CW6622)
4325                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4326
4327         if (id->driver_info & BTUSB_BCM2045)
4328                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4329
4330         if (id->driver_info & BTUSB_BCM92035)
4331                 hdev->setup = btusb_setup_bcm92035;
4332
4333         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4334             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4335                 hdev->manufacturer = 15;
4336                 hdev->setup = btbcm_setup_patchram;
4337                 hdev->set_diag = btusb_bcm_set_diag;
4338                 hdev->set_bdaddr = btbcm_set_bdaddr;
4339
4340                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4341                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4342         }
4343
4344         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4345             (id->driver_info & BTUSB_BCM_APPLE)) {
4346                 hdev->manufacturer = 15;
4347                 hdev->setup = btbcm_setup_apple;
4348                 hdev->set_diag = btusb_bcm_set_diag;
4349
4350                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4351                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4352         }
4353
4354         /* Combined Intel Device setup to support multiple setup routine */
4355         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4356                 err = btintel_configure_setup(hdev, btusb_driver.name);
4357                 if (err)
4358                         goto out_free_dev;
4359
4360                 /* Transport specific configuration */
4361                 hdev->send = btusb_send_frame_intel;
4362                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4363
4364                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4365                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4366
4367                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4368                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4369
4370                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4371                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4372         }
4373
4374         if (id->driver_info & BTUSB_MARVELL)
4375                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4376
4377         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4378             (id->driver_info & BTUSB_MEDIATEK)) {
4379                 hdev->setup = btusb_mtk_setup;
4380                 hdev->shutdown = btusb_mtk_shutdown;
4381                 hdev->manufacturer = 70;
4382                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4383                 hdev->set_bdaddr = btmtk_set_bdaddr;
4384                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4385                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4386                 data->recv_acl = btusb_recv_acl_mtk;
4387         }
4388
4389         if (id->driver_info & BTUSB_SWAVE) {
4390                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4391                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4392         }
4393
4394         if (id->driver_info & BTUSB_INTEL_BOOT) {
4395                 hdev->manufacturer = 2;
4396                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4397         }
4398
4399         if (id->driver_info & BTUSB_ATH3012) {
4400                 data->setup_on_usb = btusb_setup_qca;
4401                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4402                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4403                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4404         }
4405
4406         if (id->driver_info & BTUSB_QCA_ROME) {
4407                 data->setup_on_usb = btusb_setup_qca;
4408                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4409                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4410                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4411                 btusb_check_needs_reset_resume(intf);
4412         }
4413
4414         if (id->driver_info & BTUSB_QCA_WCN6855) {
4415                 data->qca_dump.id_vendor = id->idVendor;
4416                 data->qca_dump.id_product = id->idProduct;
4417                 data->recv_event = btusb_recv_evt_qca;
4418                 data->recv_acl = btusb_recv_acl_qca;
4419                 hci_devcd_register(hdev, btusb_coredump_qca, btusb_dump_hdr_qca, NULL);
4420                 data->setup_on_usb = btusb_setup_qca;
4421                 hdev->shutdown = btusb_shutdown_qca;
4422                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4423                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4424                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4425                 hci_set_msft_opcode(hdev, 0xFD70);
4426         }
4427
4428         if (id->driver_info & BTUSB_AMP) {
4429                 /* AMP controllers do not support SCO packets */
4430                 data->isoc = NULL;
4431         } else {
4432                 /* Interface orders are hardcoded in the specification */
4433                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4434                 data->isoc_ifnum = ifnum_base + 1;
4435         }
4436
4437         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4438             (id->driver_info & BTUSB_REALTEK)) {
4439                 btrtl_set_driver_name(hdev, btusb_driver.name);
4440                 hdev->setup = btusb_setup_realtek;
4441                 hdev->shutdown = btrtl_shutdown_realtek;
4442                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4443                 hdev->hw_error = btusb_rtl_hw_error;
4444
4445                 /* Realtek devices need to set remote wakeup on auto-suspend */
4446                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4447                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4448         }
4449
4450         if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4451                 /* Support is advertised, but not implemented */
4452                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4453                 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
4454                 set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
4455                 set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
4456         }
4457
4458         if (!reset)
4459                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4460
4461         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4462                 if (!disable_scofix)
4463                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4464         }
4465
4466         if (id->driver_info & BTUSB_BROKEN_ISOC)
4467                 data->isoc = NULL;
4468
4469         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4470                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4471
4472         if (id->driver_info & BTUSB_VALID_LE_STATES)
4473                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4474
4475         if (id->driver_info & BTUSB_DIGIANSWER) {
4476                 data->cmdreq_type = USB_TYPE_VENDOR;
4477                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4478         }
4479
4480         if (id->driver_info & BTUSB_CSR) {
4481                 struct usb_device *udev = data->udev;
4482                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4483
4484                 /* Old firmware would otherwise execute USB reset */
4485                 if (bcdDevice < 0x117)
4486                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4487
4488                 /* This must be set first in case we disable it for fakes */
4489                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4490
4491                 /* Fake CSR devices with broken commands */
4492                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4493                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4494                         hdev->setup = btusb_setup_csr;
4495         }
4496
4497         if (id->driver_info & BTUSB_SNIFFER) {
4498                 struct usb_device *udev = data->udev;
4499
4500                 /* New sniffer firmware has crippled HCI interface */
4501                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4502                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4503         }
4504
4505         if (id->driver_info & BTUSB_INTEL_BOOT) {
4506                 /* A bug in the bootloader causes that interrupt interface is
4507                  * only enabled after receiving SetInterface(0, AltSetting=0).
4508                  */
4509                 err = usb_set_interface(data->udev, 0, 0);
4510                 if (err < 0) {
4511                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4512                         goto out_free_dev;
4513                 }
4514         }
4515
4516         if (data->isoc) {
4517                 err = usb_driver_claim_interface(&btusb_driver,
4518                                                  data->isoc, data);
4519                 if (err < 0)
4520                         goto out_free_dev;
4521         }
4522
4523         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4524                 if (!usb_driver_claim_interface(&btusb_driver,
4525                                                 data->diag, data))
4526                         __set_diag_interface(hdev);
4527                 else
4528                         data->diag = NULL;
4529         }
4530
4531         if (enable_autosuspend)
4532                 usb_enable_autosuspend(data->udev);
4533
4534         data->poll_sync = enable_poll_sync;
4535
4536         err = hci_register_dev(hdev);
4537         if (err < 0)
4538                 goto out_free_dev;
4539
4540         usb_set_intfdata(intf, data);
4541
4542         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4543                             &force_poll_sync_fops);
4544
4545         return 0;
4546
4547 out_free_dev:
4548         if (data->reset_gpio)
4549                 gpiod_put(data->reset_gpio);
4550         hci_free_dev(hdev);
4551         return err;
4552 }
4553
4554 static void btusb_disconnect(struct usb_interface *intf)
4555 {
4556         struct btusb_data *data = usb_get_intfdata(intf);
4557         struct hci_dev *hdev;
4558
4559         BT_DBG("intf %p", intf);
4560
4561         if (!data)
4562                 return;
4563
4564         hdev = data->hdev;
4565         usb_set_intfdata(data->intf, NULL);
4566
4567         if (data->isoc)
4568                 usb_set_intfdata(data->isoc, NULL);
4569
4570         if (data->diag)
4571                 usb_set_intfdata(data->diag, NULL);
4572
4573         hci_unregister_dev(hdev);
4574
4575         if (intf == data->intf) {
4576                 if (data->isoc)
4577                         usb_driver_release_interface(&btusb_driver, data->isoc);
4578                 if (data->diag)
4579                         usb_driver_release_interface(&btusb_driver, data->diag);
4580         } else if (intf == data->isoc) {
4581                 if (data->diag)
4582                         usb_driver_release_interface(&btusb_driver, data->diag);
4583                 usb_driver_release_interface(&btusb_driver, data->intf);
4584         } else if (intf == data->diag) {
4585                 usb_driver_release_interface(&btusb_driver, data->intf);
4586                 if (data->isoc)
4587                         usb_driver_release_interface(&btusb_driver, data->isoc);
4588         }
4589
4590         if (data->oob_wake_irq)
4591                 device_init_wakeup(&data->udev->dev, false);
4592
4593         if (data->reset_gpio)
4594                 gpiod_put(data->reset_gpio);
4595
4596         hci_free_dev(hdev);
4597 }
4598
4599 #ifdef CONFIG_PM
4600 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4601 {
4602         struct btusb_data *data = usb_get_intfdata(intf);
4603
4604         BT_DBG("intf %p", intf);
4605
4606         if (data->suspend_count++)
4607                 return 0;
4608
4609         spin_lock_irq(&data->txlock);
4610         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4611                 set_bit(BTUSB_SUSPENDING, &data->flags);
4612                 spin_unlock_irq(&data->txlock);
4613         } else {
4614                 spin_unlock_irq(&data->txlock);
4615                 data->suspend_count--;
4616                 return -EBUSY;
4617         }
4618
4619         cancel_work_sync(&data->work);
4620
4621         btusb_stop_traffic(data);
4622         usb_kill_anchored_urbs(&data->tx_anchor);
4623
4624         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4625                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4626                 enable_irq_wake(data->oob_wake_irq);
4627                 enable_irq(data->oob_wake_irq);
4628         }
4629
4630         /* For global suspend, Realtek devices lose the loaded fw
4631          * in them. But for autosuspend, firmware should remain.
4632          * Actually, it depends on whether the usb host sends
4633          * set feature (enable wakeup) or not.
4634          */
4635         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4636                 if (PMSG_IS_AUTO(message) &&
4637                     device_can_wakeup(&data->udev->dev))
4638                         data->udev->do_remote_wakeup = 1;
4639                 else if (!PMSG_IS_AUTO(message) &&
4640                          !device_may_wakeup(&data->udev->dev)) {
4641                         data->udev->do_remote_wakeup = 0;
4642                         data->udev->reset_resume = 1;
4643                 }
4644         }
4645
4646         return 0;
4647 }
4648
4649 static void play_deferred(struct btusb_data *data)
4650 {
4651         struct urb *urb;
4652         int err;
4653
4654         while ((urb = usb_get_from_anchor(&data->deferred))) {
4655                 usb_anchor_urb(urb, &data->tx_anchor);
4656
4657                 err = usb_submit_urb(urb, GFP_ATOMIC);
4658                 if (err < 0) {
4659                         if (err != -EPERM && err != -ENODEV)
4660                                 BT_ERR("%s urb %p submission failed (%d)",
4661                                        data->hdev->name, urb, -err);
4662                         kfree(urb->setup_packet);
4663                         usb_unanchor_urb(urb);
4664                         usb_free_urb(urb);
4665                         break;
4666                 }
4667
4668                 data->tx_in_flight++;
4669                 usb_free_urb(urb);
4670         }
4671
4672         /* Cleanup the rest deferred urbs. */
4673         while ((urb = usb_get_from_anchor(&data->deferred))) {
4674                 kfree(urb->setup_packet);
4675                 usb_free_urb(urb);
4676         }
4677 }
4678
4679 static int btusb_resume(struct usb_interface *intf)
4680 {
4681         struct btusb_data *data = usb_get_intfdata(intf);
4682         struct hci_dev *hdev = data->hdev;
4683         int err = 0;
4684
4685         BT_DBG("intf %p", intf);
4686
4687         if (--data->suspend_count)
4688                 return 0;
4689
4690         /* Disable only if not already disabled (keep it balanced) */
4691         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4692                 disable_irq(data->oob_wake_irq);
4693                 disable_irq_wake(data->oob_wake_irq);
4694         }
4695
4696         if (!test_bit(HCI_RUNNING, &hdev->flags))
4697                 goto done;
4698
4699         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4700                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4701                 if (err < 0) {
4702                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4703                         goto failed;
4704                 }
4705         }
4706
4707         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4708                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4709                 if (err < 0) {
4710                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4711                         goto failed;
4712                 }
4713
4714                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4715         }
4716
4717         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4718                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4719                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4720                 else
4721                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4722         }
4723
4724         spin_lock_irq(&data->txlock);
4725         play_deferred(data);
4726         clear_bit(BTUSB_SUSPENDING, &data->flags);
4727         spin_unlock_irq(&data->txlock);
4728         schedule_work(&data->work);
4729
4730         return 0;
4731
4732 failed:
4733         usb_scuttle_anchored_urbs(&data->deferred);
4734 done:
4735         spin_lock_irq(&data->txlock);
4736         clear_bit(BTUSB_SUSPENDING, &data->flags);
4737         spin_unlock_irq(&data->txlock);
4738
4739         return err;
4740 }
4741 #endif
4742
4743 #ifdef CONFIG_DEV_COREDUMP
4744 static void btusb_coredump(struct device *dev)
4745 {
4746         struct btusb_data *data = dev_get_drvdata(dev);
4747         struct hci_dev *hdev = data->hdev;
4748
4749         if (hdev->dump.coredump)
4750                 hdev->dump.coredump(hdev);
4751 }
4752 #endif
4753
4754 static struct usb_driver btusb_driver = {
4755         .name           = "btusb",
4756         .probe          = btusb_probe,
4757         .disconnect     = btusb_disconnect,
4758 #ifdef CONFIG_PM
4759         .suspend        = btusb_suspend,
4760         .resume         = btusb_resume,
4761 #endif
4762         .id_table       = btusb_table,
4763         .supports_autosuspend = 1,
4764         .disable_hub_initiated_lpm = 1,
4765
4766 #ifdef CONFIG_DEV_COREDUMP
4767         .drvwrap = {
4768                 .driver = {
4769                         .coredump = btusb_coredump,
4770                 },
4771         },
4772 #endif
4773 };
4774
4775 module_usb_driver(btusb_driver);
4776
4777 module_param(disable_scofix, bool, 0644);
4778 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4779
4780 module_param(force_scofix, bool, 0644);
4781 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4782
4783 module_param(enable_autosuspend, bool, 0644);
4784 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4785
4786 module_param(reset, bool, 0644);
4787 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4788
4789 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4790 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4791 MODULE_VERSION(VERSION);
4792 MODULE_LICENSE("GPL");