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