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