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         kfree_skb(data->evt_skb);
 806         data->evt_skb = NULL;
 807
 808         kfree_skb(data->acl_skb);
 809         data->acl_skb = NULL;
 810
 811         kfree_skb(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         /* Detect a wide host of Chinese controllers that aren't CSR.
2060          *
2061          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2062          *
2063          * The main thing they have in common is that these are really popular low-cost
2064          * options that support newer Bluetooth versions but rely on heavy VID/PID
2065          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2066          *
2067          * We detect actual CSR devices by checking that the HCI manufacturer code
2068          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2069          * HCI rev values always match. As they both store the firmware number.
2070          */
2071         if (le16_to_cpu(rp->manufacturer) != 10 ||
2072             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2073                 is_fake = true;
2074
2075         /* Known legit CSR firmware build numbers and their supported BT versions:
2076          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2077          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2078          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2079          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2080          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2081          *
2082          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2083          *      support BT 1.1 only; so it's a dead giveaway when some
2084          *      third-party BT 4.0 dongle reuses it.
2085          */
2086         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2087                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
2088                 is_fake = true;
2089
2090         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2091                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
2092                 is_fake = true;
2093
2094         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2095                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
2096                 is_fake = true;
2097
2098         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2099                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
2100                 is_fake = true;
2101
2102         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2103                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
2104                 is_fake = true;
2105
2106         /* Other clones which beat all the above checks */
2107         else if (bcdDevice == 0x0134 &&
2108                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2109                  le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
2110                 is_fake = true;
2111
2112         if (is_fake) {
2113                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2114
2115                 /* Generally these clones have big discrepancies between
2116                  * advertised features and what's actually supported.
2117                  * Probably will need to be expanded in the future;
2118                  * without these the controller will lock up.
2119                  */
2120                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2121                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2122                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2123                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2124
2125                 /* Clear the reset quirk since this is not an actual
2126                  * early Bluetooth 1.1 device from CSR.
2127                  */
2128                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2129                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2130
2131                 /*
2132                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2133                  *
2134                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2135                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2136                  *
2137                  * These controllers are really messed-up.
2138                  *
2139                  * 1. Their bulk RX endpoint will never report any data unless
2140                  *    the device was suspended at least once (yes, really).
2141                  * 2. They will not wakeup when autosuspended and receiving data
2142                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2143                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2144                  *
2145                  * To fix 1. enable runtime-suspend, force-suspend the
2146                  * HCI and then wake-it up by disabling runtime-suspend.
2147                  *
2148                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2149                  * will still be autosuspended when it is not open.
2150                  *
2151                  * --
2152                  *
2153                  * Because these are widespread problems we prefer generic solutions; so
2154                  * apply this initialization quirk to every controller that gets here,
2155                  * it should be harmless. The alternative is to not work at all.
2156                  */
2157                 pm_runtime_allow(&data->udev->dev);
2158
2159                 ret = pm_runtime_suspend(&data->udev->dev);
2160                 if (ret >= 0)
2161                         msleep(200);
2162                 else
2163                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2164
2165                 pm_runtime_forbid(&data->udev->dev);
2166
2167                 device_set_wakeup_capable(&data->udev->dev, false);
2168
2169                 /* Re-enable autosuspend if this was requested */
2170                 if (enable_autosuspend)
2171                         usb_enable_autosuspend(data->udev);
2172         }
2173
2174         kfree_skb(skb);
2175
2176         return 0;
2177 }
2178
2179 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2180 {
2181         struct sk_buff *skb;
2182         struct hci_event_hdr *hdr;
2183         struct hci_ev_cmd_complete *evt;
2184
2185         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2186         if (!skb)
2187                 return -ENOMEM;
2188
2189         hdr = skb_put(skb, sizeof(*hdr));
2190         hdr->evt = HCI_EV_CMD_COMPLETE;
2191         hdr->plen = sizeof(*evt) + 1;
2192
2193         evt = skb_put(skb, sizeof(*evt));
2194         evt->ncmd = 0x01;
2195         evt->opcode = cpu_to_le16(opcode);
2196
2197         skb_put_u8(skb, 0x00);
2198
2199         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2200
2201         return hci_recv_frame(hdev, skb);
2202 }
2203
2204 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2205                                  int count)
2206 {
2207         struct hci_dev *hdev = data->hdev;
2208
2209         /* When the device is in bootloader mode, then it can send
2210          * events via the bulk endpoint. These events are treated the
2211          * same way as the ones received from the interrupt endpoint.
2212          */
2213         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2214                 return btusb_recv_intr(data, buffer, count);
2215
2216         return btusb_recv_bulk(data, buffer, count);
2217 }
2218
2219 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2220 {
2221         if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2222                 struct hci_event_hdr *hdr = (void *)skb->data;
2223
2224                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2225                     hdr->plen > 0) {
2226                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2227                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2228
2229                         switch (skb->data[2]) {
2230                         case 0x02:
2231                                 /* When switching to the operational firmware
2232                                  * the device sends a vendor specific event
2233                                  * indicating that the bootup completed.
2234                                  */
2235                                 btintel_bootup(hdev, ptr, len);
2236                                 break;
2237                         case 0x06:
2238                                 /* When the firmware loading completes the
2239                                  * device sends out a vendor specific event
2240                                  * indicating the result of the firmware
2241                                  * loading.
2242                                  */
2243                                 btintel_secure_send_result(hdev, ptr, len);
2244                                 break;
2245                         }
2246                 }
2247         }
2248
2249         return hci_recv_frame(hdev, skb);
2250 }
2251
2252 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2253 {
2254         struct urb *urb;
2255
2256         BT_DBG("%s", hdev->name);
2257
2258         switch (hci_skb_pkt_type(skb)) {
2259         case HCI_COMMAND_PKT:
2260                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2261                         struct hci_command_hdr *cmd = (void *)skb->data;
2262                         __u16 opcode = le16_to_cpu(cmd->opcode);
2263
2264                         /* When in bootloader mode and the command 0xfc09
2265                          * is received, it needs to be send down the
2266                          * bulk endpoint. So allocate a bulk URB instead.
2267                          */
2268                         if (opcode == 0xfc09)
2269                                 urb = alloc_bulk_urb(hdev, skb);
2270                         else
2271                                 urb = alloc_ctrl_urb(hdev, skb);
2272
2273                         /* When the 0xfc01 command is issued to boot into
2274                          * the operational firmware, it will actually not
2275                          * send a command complete event. To keep the flow
2276                          * control working inject that event here.
2277                          */
2278                         if (opcode == 0xfc01)
2279                                 inject_cmd_complete(hdev, opcode);
2280                 } else {
2281                         urb = alloc_ctrl_urb(hdev, skb);
2282                 }
2283                 if (IS_ERR(urb))
2284                         return PTR_ERR(urb);
2285
2286                 hdev->stat.cmd_tx++;
2287                 return submit_or_queue_tx_urb(hdev, urb);
2288
2289         case HCI_ACLDATA_PKT:
2290                 urb = alloc_bulk_urb(hdev, skb);
2291                 if (IS_ERR(urb))
2292                         return PTR_ERR(urb);
2293
2294                 hdev->stat.acl_tx++;
2295                 return submit_or_queue_tx_urb(hdev, urb);
2296
2297         case HCI_SCODATA_PKT:
2298                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2299                         return -ENODEV;
2300
2301                 urb = alloc_isoc_urb(hdev, skb);
2302                 if (IS_ERR(urb))
2303                         return PTR_ERR(urb);
2304
2305                 hdev->stat.sco_tx++;
2306                 return submit_tx_urb(hdev, urb);
2307
2308         case HCI_ISODATA_PKT:
2309                 urb = alloc_bulk_urb(hdev, skb);
2310                 if (IS_ERR(urb))
2311                         return PTR_ERR(urb);
2312
2313                 return submit_or_queue_tx_urb(hdev, urb);
2314         }
2315
2316         return -EILSEQ;
2317 }
2318
2319 /* UHW CR mapping */
2320 #define MTK_BT_MISC             0x70002510
2321 #define MTK_BT_SUBSYS_RST       0x70002610
2322 #define MTK_UDMA_INT_STA_BT     0x74000024
2323 #define MTK_UDMA_INT_STA_BT1    0x74000308
2324 #define MTK_BT_WDT_STATUS       0x740003A0
2325 #define MTK_EP_RST_OPT          0x74011890
2326 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2327 #define MTK_BT_RST_DONE         0x00000100
2328 #define MTK_BT_RESET_WAIT_MS    100
2329 #define MTK_BT_RESET_NUM_TRIES  10
2330
2331 static void btusb_mtk_wmt_recv(struct urb *urb)
2332 {
2333         struct hci_dev *hdev = urb->context;
2334         struct btusb_data *data = hci_get_drvdata(hdev);
2335         struct sk_buff *skb;
2336         int err;
2337
2338         if (urb->status == 0 && urb->actual_length > 0) {
2339                 hdev->stat.byte_rx += urb->actual_length;
2340
2341                 /* WMT event shouldn't be fragmented and the size should be
2342                  * less than HCI_WMT_MAX_EVENT_SIZE.
2343                  */
2344                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2345                 if (!skb) {
2346                         hdev->stat.err_rx++;
2347                         kfree(urb->setup_packet);
2348                         return;
2349                 }
2350
2351                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2352                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2353
2354                 /* When someone waits for the WMT event, the skb is being cloned
2355                  * and being processed the events from there then.
2356                  */
2357                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2358                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2359                         if (!data->evt_skb) {
2360                                 kfree_skb(skb);
2361                                 kfree(urb->setup_packet);
2362                                 return;
2363                         }
2364                 }
2365
2366                 err = hci_recv_frame(hdev, skb);
2367                 if (err < 0) {
2368                         kfree_skb(data->evt_skb);
2369                         data->evt_skb = NULL;
2370                         kfree(urb->setup_packet);
2371                         return;
2372                 }
2373
2374                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2375                                        &data->flags)) {
2376                         /* Barrier to sync with other CPUs */
2377                         smp_mb__after_atomic();
2378                         wake_up_bit(&data->flags,
2379                                     BTUSB_TX_WAIT_VND_EVT);
2380                 }
2381                 kfree(urb->setup_packet);
2382                 return;
2383         } else if (urb->status == -ENOENT) {
2384                 /* Avoid suspend failed when usb_kill_urb */
2385                 return;
2386         }
2387
2388         usb_mark_last_busy(data->udev);
2389
2390         /* The URB complete handler is still called with urb->actual_length = 0
2391          * when the event is not available, so we should keep re-submitting
2392          * URB until WMT event returns, Also, It's necessary to wait some time
2393          * between the two consecutive control URBs to relax the target device
2394          * to generate the event. Otherwise, the WMT event cannot return from
2395          * the device successfully.
2396          */
2397         udelay(500);
2398
2399         usb_anchor_urb(urb, &data->ctrl_anchor);
2400         err = usb_submit_urb(urb, GFP_ATOMIC);
2401         if (err < 0) {
2402                 kfree(urb->setup_packet);
2403                 /* -EPERM: urb is being killed;
2404                  * -ENODEV: device got disconnected
2405                  */
2406                 if (err != -EPERM && err != -ENODEV)
2407                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2408                                    urb, -err);
2409                 usb_unanchor_urb(urb);
2410         }
2411 }
2412
2413 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2414 {
2415         struct btusb_data *data = hci_get_drvdata(hdev);
2416         struct usb_ctrlrequest *dr;
2417         unsigned char *buf;
2418         int err, size = 64;
2419         unsigned int pipe;
2420         struct urb *urb;
2421
2422         urb = usb_alloc_urb(0, GFP_KERNEL);
2423         if (!urb)
2424                 return -ENOMEM;
2425
2426         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2427         if (!dr) {
2428                 usb_free_urb(urb);
2429                 return -ENOMEM;
2430         }
2431
2432         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2433         dr->bRequest     = 1;
2434         dr->wIndex       = cpu_to_le16(0);
2435         dr->wValue       = cpu_to_le16(48);
2436         dr->wLength      = cpu_to_le16(size);
2437
2438         buf = kmalloc(size, GFP_KERNEL);
2439         if (!buf) {
2440                 kfree(dr);
2441                 usb_free_urb(urb);
2442                 return -ENOMEM;
2443         }
2444
2445         pipe = usb_rcvctrlpipe(data->udev, 0);
2446
2447         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2448                              buf, size, btusb_mtk_wmt_recv, hdev);
2449
2450         urb->transfer_flags |= URB_FREE_BUFFER;
2451
2452         usb_anchor_urb(urb, &data->ctrl_anchor);
2453         err = usb_submit_urb(urb, GFP_KERNEL);
2454         if (err < 0) {
2455                 if (err != -EPERM && err != -ENODEV)
2456                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2457                                    urb, -err);
2458                 usb_unanchor_urb(urb);
2459         }
2460
2461         usb_free_urb(urb);
2462
2463         return err;
2464 }
2465
2466 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2467                                   struct btmtk_hci_wmt_params *wmt_params)
2468 {
2469         struct btusb_data *data = hci_get_drvdata(hdev);
2470         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2471         u32 hlen, status = BTMTK_WMT_INVALID;
2472         struct btmtk_hci_wmt_evt *wmt_evt;
2473         struct btmtk_hci_wmt_cmd *wc;
2474         struct btmtk_wmt_hdr *hdr;
2475         int err;
2476
2477         /* Send the WMT command and wait until the WMT event returns */
2478         hlen = sizeof(*hdr) + wmt_params->dlen;
2479         if (hlen > 255)
2480                 return -EINVAL;
2481
2482         wc = kzalloc(hlen, GFP_KERNEL);
2483         if (!wc)
2484                 return -ENOMEM;
2485
2486         hdr = &wc->hdr;
2487         hdr->dir = 1;
2488         hdr->op = wmt_params->op;
2489         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2490         hdr->flag = wmt_params->flag;
2491         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2492
2493         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2494
2495         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2496          * it needs constantly polling control pipe until the host received the
2497          * WMT event, thus, we should require to specifically acquire PM counter
2498          * on the USB to prevent the interface from entering auto suspended
2499          * while WMT cmd/event in progress.
2500          */
2501         err = usb_autopm_get_interface(data->intf);
2502         if (err < 0)
2503                 goto err_free_wc;
2504
2505         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2506
2507         if (err < 0) {
2508                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2509                 usb_autopm_put_interface(data->intf);
2510                 goto err_free_wc;
2511         }
2512
2513         /* Submit control IN URB on demand to process the WMT event */
2514         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2515
2516         usb_autopm_put_interface(data->intf);
2517
2518         if (err < 0)
2519                 goto err_free_wc;
2520
2521         /* The vendor specific WMT commands are all answered by a vendor
2522          * specific event and will have the Command Status or Command
2523          * Complete as with usual HCI command flow control.
2524          *
2525          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2526          * state to be cleared. The driver specific event receive routine
2527          * will clear that state and with that indicate completion of the
2528          * WMT command.
2529          */
2530         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2531                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2532         if (err == -EINTR) {
2533                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2534                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2535                 goto err_free_wc;
2536         }
2537
2538         if (err) {
2539                 bt_dev_err(hdev, "Execution of wmt command timed out");
2540                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2541                 err = -ETIMEDOUT;
2542                 goto err_free_wc;
2543         }
2544
2545         /* Parse and handle the return WMT event */
2546         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2547         if (wmt_evt->whdr.op != hdr->op) {
2548                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2549                            wmt_evt->whdr.op, hdr->op);
2550                 err = -EIO;
2551                 goto err_free_skb;
2552         }
2553
2554         switch (wmt_evt->whdr.op) {
2555         case BTMTK_WMT_SEMAPHORE:
2556                 if (wmt_evt->whdr.flag == 2)
2557                         status = BTMTK_WMT_PATCH_UNDONE;
2558                 else
2559                         status = BTMTK_WMT_PATCH_DONE;
2560                 break;
2561         case BTMTK_WMT_FUNC_CTRL:
2562                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2563                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2564                         status = BTMTK_WMT_ON_DONE;
2565                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2566                         status = BTMTK_WMT_ON_PROGRESS;
2567                 else
2568                         status = BTMTK_WMT_ON_UNDONE;
2569                 break;
2570         case BTMTK_WMT_PATCH_DWNLD:
2571                 if (wmt_evt->whdr.flag == 2)
2572                         status = BTMTK_WMT_PATCH_DONE;
2573                 else if (wmt_evt->whdr.flag == 1)
2574                         status = BTMTK_WMT_PATCH_PROGRESS;
2575                 else
2576                         status = BTMTK_WMT_PATCH_UNDONE;
2577                 break;
2578         }
2579
2580         if (wmt_params->status)
2581                 *wmt_params->status = status;
2582
2583 err_free_skb:
2584         kfree_skb(data->evt_skb);
2585         data->evt_skb = NULL;
2586 err_free_wc:
2587         kfree(wc);
2588         return err;
2589 }
2590
2591 static int btusb_mtk_func_query(struct hci_dev *hdev)
2592 {
2593         struct btmtk_hci_wmt_params wmt_params;
2594         int status, err;
2595         u8 param = 0;
2596
2597         /* Query whether the function is enabled */
2598         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2599         wmt_params.flag = 4;
2600         wmt_params.dlen = sizeof(param);
2601         wmt_params.data = &param;
2602         wmt_params.status = &status;
2603
2604         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2605         if (err < 0) {
2606                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2607                 return err;
2608         }
2609
2610         return status;
2611 }
2612
2613 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2614 {
2615         struct hci_dev *hdev = data->hdev;
2616         int pipe, err;
2617         void *buf;
2618
2619         buf = kzalloc(4, GFP_KERNEL);
2620         if (!buf)
2621                 return -ENOMEM;
2622
2623         put_unaligned_le32(val, buf);
2624
2625         pipe = usb_sndctrlpipe(data->udev, 0);
2626         err = usb_control_msg(data->udev, pipe, 0x02,
2627                               0x5E,
2628                               reg >> 16, reg & 0xffff,
2629                               buf, 4, USB_CTRL_SET_TIMEOUT);
2630         if (err < 0) {
2631                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2632                 goto err_free_buf;
2633         }
2634
2635 err_free_buf:
2636         kfree(buf);
2637
2638         return err;
2639 }
2640
2641 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2642 {
2643         struct hci_dev *hdev = data->hdev;
2644         int pipe, err;
2645         void *buf;
2646
2647         buf = kzalloc(4, GFP_KERNEL);
2648         if (!buf)
2649                 return -ENOMEM;
2650
2651         pipe = usb_rcvctrlpipe(data->udev, 0);
2652         err = usb_control_msg(data->udev, pipe, 0x01,
2653                               0xDE,
2654                               reg >> 16, reg & 0xffff,
2655                               buf, 4, USB_CTRL_SET_TIMEOUT);
2656         if (err < 0) {
2657                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2658                 goto err_free_buf;
2659         }
2660
2661         *val = get_unaligned_le32(buf);
2662         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2663
2664 err_free_buf:
2665         kfree(buf);
2666
2667         return err;
2668 }
2669
2670 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2671 {
2672         int pipe, err, size = sizeof(u32);
2673         void *buf;
2674
2675         buf = kzalloc(size, GFP_KERNEL);
2676         if (!buf)
2677                 return -ENOMEM;
2678
2679         pipe = usb_rcvctrlpipe(data->udev, 0);
2680         err = usb_control_msg(data->udev, pipe, 0x63,
2681                               USB_TYPE_VENDOR | USB_DIR_IN,
2682                               reg >> 16, reg & 0xffff,
2683                               buf, size, USB_CTRL_SET_TIMEOUT);
2684         if (err < 0)
2685                 goto err_free_buf;
2686
2687         *val = get_unaligned_le32(buf);
2688
2689 err_free_buf:
2690         kfree(buf);
2691
2692         return err;
2693 }
2694
2695 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2696 {
2697         return btusb_mtk_reg_read(data, reg, id);
2698 }
2699
2700 static int btusb_mtk_setup(struct hci_dev *hdev)
2701 {
2702         struct btusb_data *data = hci_get_drvdata(hdev);
2703         struct btmtk_hci_wmt_params wmt_params;
2704         ktime_t calltime, delta, rettime;
2705         struct btmtk_tci_sleep tci_sleep;
2706         unsigned long long duration;
2707         struct sk_buff *skb;
2708         const char *fwname;
2709         int err, status;
2710         u32 dev_id;
2711         char fw_bin_name[64];
2712         u32 fw_version = 0;
2713         u8 param;
2714
2715         calltime = ktime_get();
2716
2717         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2718         if (err < 0) {
2719                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2720                 return err;
2721         }
2722
2723         if (!dev_id) {
2724                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2725                 if (err < 0) {
2726                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
2727                         return err;
2728                 }
2729                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2730                 if (err < 0) {
2731                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2732                         return err;
2733                 }
2734         }
2735
2736         switch (dev_id) {
2737         case 0x7663:
2738                 fwname = FIRMWARE_MT7663;
2739                 break;
2740         case 0x7668:
2741                 fwname = FIRMWARE_MT7668;
2742                 break;
2743         case 0x7922:
2744         case 0x7961:
2745                 snprintf(fw_bin_name, sizeof(fw_bin_name),
2746                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2747                          dev_id & 0xffff, (fw_version & 0xff) + 1);
2748                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2749                                                 btusb_mtk_hci_wmt_sync);
2750                 if (err < 0) {
2751                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2752                         return err;
2753                 }
2754
2755                 /* It's Device EndPoint Reset Option Register */
2756                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2757
2758                 /* Enable Bluetooth protocol */
2759                 param = 1;
2760                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2761                 wmt_params.flag = 0;
2762                 wmt_params.dlen = sizeof(param);
2763                 wmt_params.data = &param;
2764                 wmt_params.status = NULL;
2765
2766                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2767                 if (err < 0) {
2768                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2769                         return err;
2770                 }
2771
2772                 hci_set_msft_opcode(hdev, 0xFD30);
2773                 hci_set_aosp_capable(hdev);
2774                 goto done;
2775         default:
2776                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2777                            dev_id);
2778                 return -ENODEV;
2779         }
2780
2781         /* Query whether the firmware is already download */
2782         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2783         wmt_params.flag = 1;
2784         wmt_params.dlen = 0;
2785         wmt_params.data = NULL;
2786         wmt_params.status = &status;
2787
2788         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2789         if (err < 0) {
2790                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2791                 return err;
2792         }
2793
2794         if (status == BTMTK_WMT_PATCH_DONE) {
2795                 bt_dev_info(hdev, "firmware already downloaded");
2796                 goto ignore_setup_fw;
2797         }
2798
2799         /* Setup a firmware which the device definitely requires */
2800         err = btmtk_setup_firmware(hdev, fwname,
2801                                    btusb_mtk_hci_wmt_sync);
2802         if (err < 0)
2803                 return err;
2804
2805 ignore_setup_fw:
2806         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2807                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2808                                  2000, 5000000);
2809         /* -ETIMEDOUT happens */
2810         if (err < 0)
2811                 return err;
2812
2813         /* The other errors happen in btusb_mtk_func_query */
2814         if (status < 0)
2815                 return status;
2816
2817         if (status == BTMTK_WMT_ON_DONE) {
2818                 bt_dev_info(hdev, "function already on");
2819                 goto ignore_func_on;
2820         }
2821
2822         /* Enable Bluetooth protocol */
2823         param = 1;
2824         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2825         wmt_params.flag = 0;
2826         wmt_params.dlen = sizeof(param);
2827         wmt_params.data = &param;
2828         wmt_params.status = NULL;
2829
2830         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2831         if (err < 0) {
2832                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2833                 return err;
2834         }
2835
2836 ignore_func_on:
2837         /* Apply the low power environment setup */
2838         tci_sleep.mode = 0x5;
2839         tci_sleep.duration = cpu_to_le16(0x640);
2840         tci_sleep.host_duration = cpu_to_le16(0x640);
2841         tci_sleep.host_wakeup_pin = 0;
2842         tci_sleep.time_compensation = 0;
2843
2844         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
2845                              HCI_INIT_TIMEOUT);
2846         if (IS_ERR(skb)) {
2847                 err = PTR_ERR(skb);
2848                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
2849                 return err;
2850         }
2851         kfree_skb(skb);
2852
2853 done:
2854         rettime = ktime_get();
2855         delta = ktime_sub(rettime, calltime);
2856         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2857
2858         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
2859
2860         return 0;
2861 }
2862
2863 static int btusb_mtk_shutdown(struct hci_dev *hdev)
2864 {
2865         struct btmtk_hci_wmt_params wmt_params;
2866         u8 param = 0;
2867         int err;
2868
2869         /* Disable the device */
2870         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2871         wmt_params.flag = 0;
2872         wmt_params.dlen = sizeof(param);
2873         wmt_params.data = &param;
2874         wmt_params.status = NULL;
2875
2876         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2877         if (err < 0) {
2878                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2879                 return err;
2880         }
2881
2882         return 0;
2883 }
2884
2885 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
2886 {
2887         struct btusb_data *data = hci_get_drvdata(hdev);
2888         u32 val;
2889         int err, retry = 0;
2890
2891         /* It's MediaTek specific bluetooth reset mechanism via USB */
2892         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
2893                 bt_dev_err(hdev, "last reset failed? Not resetting again");
2894                 return;
2895         }
2896
2897         err = usb_autopm_get_interface(data->intf);
2898         if (err < 0)
2899                 return;
2900
2901         btusb_stop_traffic(data);
2902         usb_kill_anchored_urbs(&data->tx_anchor);
2903
2904         /* It's Device EndPoint Reset Option Register */
2905         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
2906         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2907         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
2908
2909         /* Reset the bluetooth chip via USB interface. */
2910         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
2911         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
2912         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
2913         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
2914         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
2915         /* MT7921 need to delay 20ms between toggle reset bit */
2916         msleep(20);
2917         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
2918         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
2919
2920         /* Poll the register until reset is completed */
2921         do {
2922                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
2923                 if (val & MTK_BT_RST_DONE) {
2924                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
2925                         break;
2926                 }
2927
2928                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
2929                 retry++;
2930                 msleep(MTK_BT_RESET_WAIT_MS);
2931         } while (retry < MTK_BT_RESET_NUM_TRIES);
2932
2933         btusb_mtk_id_get(data, 0x70010200, &val);
2934         if (!val)
2935                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
2936
2937         usb_queue_reset_device(data->intf);
2938
2939         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
2940 }
2941
2942 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
2943 {
2944         struct btusb_data *data = hci_get_drvdata(hdev);
2945         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
2946
2947         switch (handle) {
2948         case 0xfc6f:            /* Firmware dump from device */
2949                 /* When the firmware hangs, the device can no longer
2950                  * suspend and thus disable auto-suspend.
2951                  */
2952                 usb_disable_autosuspend(data->udev);
2953                 fallthrough;
2954         case 0x05ff:            /* Firmware debug logging 1 */
2955         case 0x05fe:            /* Firmware debug logging 2 */
2956                 return hci_recv_diag(hdev, skb);
2957         }
2958
2959         return hci_recv_frame(hdev, skb);
2960 }
2961
2962 #ifdef CONFIG_PM
2963 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2964 static int marvell_config_oob_wake(struct hci_dev *hdev)
2965 {
2966         struct sk_buff *skb;
2967         struct btusb_data *data = hci_get_drvdata(hdev);
2968         struct device *dev = &data->udev->dev;
2969         u16 pin, gap, opcode;
2970         int ret;
2971         u8 cmd[5];
2972
2973         /* Move on if no wakeup pin specified */
2974         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2975             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2976                 return 0;
2977
2978         /* Vendor specific command to configure a GPIO as wake-up pin */
2979         opcode = hci_opcode_pack(0x3F, 0x59);
2980         cmd[0] = opcode & 0xFF;
2981         cmd[1] = opcode >> 8;
2982         cmd[2] = 2; /* length of parameters that follow */
2983         cmd[3] = pin;
2984         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2985
2986         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2987         if (!skb) {
2988                 bt_dev_err(hdev, "%s: No memory", __func__);
2989                 return -ENOMEM;
2990         }
2991
2992         skb_put_data(skb, cmd, sizeof(cmd));
2993         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2994
2995         ret = btusb_send_frame(hdev, skb);
2996         if (ret) {
2997                 bt_dev_err(hdev, "%s: configuration failed", __func__);
2998                 kfree_skb(skb);
2999                 return ret;
3000         }
3001
3002         return 0;
3003 }
3004 #endif
3005
3006 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3007                                     const bdaddr_t *bdaddr)
3008 {
3009         struct sk_buff *skb;
3010         u8 buf[8];
3011         long ret;
3012
3013         buf[0] = 0xfe;
3014         buf[1] = sizeof(bdaddr_t);
3015         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3016
3017         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3018         if (IS_ERR(skb)) {
3019                 ret = PTR_ERR(skb);
3020                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3021                            ret);
3022                 return ret;
3023         }
3024         kfree_skb(skb);
3025
3026         return 0;
3027 }
3028
3029 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3030                                     const bdaddr_t *bdaddr)
3031 {
3032         struct sk_buff *skb;
3033         u8 buf[10];
3034         long ret;
3035
3036         buf[0] = 0x01;
3037         buf[1] = 0x01;
3038         buf[2] = 0x00;
3039         buf[3] = sizeof(bdaddr_t);
3040         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3041
3042         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3043         if (IS_ERR(skb)) {
3044                 ret = PTR_ERR(skb);
3045                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3046                 return ret;
3047         }
3048         kfree_skb(skb);
3049
3050         return 0;
3051 }
3052
3053 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3054                                 const bdaddr_t *bdaddr)
3055 {
3056         struct sk_buff *skb;
3057         u8 buf[6];
3058         long ret;
3059
3060         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3061
3062         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3063                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3064         if (IS_ERR(skb)) {
3065                 ret = PTR_ERR(skb);
3066                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3067                 return ret;
3068         }
3069         kfree_skb(skb);
3070
3071         return 0;
3072 }
3073
3074 #define QCA_DFU_PACKET_LEN      4096
3075
3076 #define QCA_GET_TARGET_VERSION  0x09
3077 #define QCA_CHECK_STATUS        0x05
3078 #define QCA_DFU_DOWNLOAD        0x01
3079
3080 #define QCA_SYSCFG_UPDATED      0x40
3081 #define QCA_PATCH_UPDATED       0x80
3082 #define QCA_DFU_TIMEOUT         3000
3083 #define QCA_FLAG_MULTI_NVM      0x80
3084 #define QCA_BT_RESET_WAIT_MS    100
3085
3086 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3087 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3088
3089 struct qca_version {
3090         __le32  rom_version;
3091         __le32  patch_version;
3092         __le32  ram_version;
3093         __u8    chip_id;
3094         __u8    platform_id;
3095         __le16  flag;
3096         __u8    reserved[4];
3097 } __packed;
3098
3099 struct qca_rampatch_version {
3100         __le16  rom_version_high;
3101         __le16  rom_version_low;
3102         __le16  patch_version;
3103 } __packed;
3104
3105 struct qca_device_info {
3106         u32     rom_version;
3107         u8      rampatch_hdr;   /* length of header in rampatch */
3108         u8      nvm_hdr;        /* length of header in NVM */
3109         u8      ver_offset;     /* offset of version structure in rampatch */
3110 };
3111
3112 static const struct qca_device_info qca_devices_table[] = {
3113         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3114         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3115         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3116         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3117         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3118         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3119         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3120         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3121         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3122         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3123 };
3124
3125 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3126                                      void *data, u16 size)
3127 {
3128         int pipe, err;
3129         u8 *buf;
3130
3131         buf = kmalloc(size, GFP_KERNEL);
3132         if (!buf)
3133                 return -ENOMEM;
3134
3135         /* Found some of USB hosts have IOT issues with ours so that we should
3136          * not wait until HCI layer is ready.
3137          */
3138         pipe = usb_rcvctrlpipe(udev, 0);
3139         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3140                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3141         if (err < 0) {
3142                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3143                 goto done;
3144         }
3145
3146         memcpy(data, buf, size);
3147
3148 done:
3149         kfree(buf);
3150
3151         return err;
3152 }
3153
3154 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3155                                        const struct firmware *firmware,
3156                                        size_t hdr_size)
3157 {
3158         struct btusb_data *btdata = hci_get_drvdata(hdev);
3159         struct usb_device *udev = btdata->udev;
3160         size_t count, size, sent = 0;
3161         int pipe, len, err;
3162         u8 *buf;
3163
3164         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3165         if (!buf)
3166                 return -ENOMEM;
3167
3168         count = firmware->size;
3169
3170         size = min_t(size_t, count, hdr_size);
3171         memcpy(buf, firmware->data, size);
3172
3173         /* USB patches should go down to controller through USB path
3174          * because binary format fits to go down through USB channel.
3175          * USB control path is for patching headers and USB bulk is for
3176          * patch body.
3177          */
3178         pipe = usb_sndctrlpipe(udev, 0);
3179         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3180                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3181         if (err < 0) {
3182                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3183                 goto done;
3184         }
3185
3186         sent += size;
3187         count -= size;
3188
3189         /* ep2 need time to switch from function acl to function dfu,
3190          * so we add 20ms delay here.
3191          */
3192         msleep(20);
3193
3194         while (count) {
3195                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3196
3197                 memcpy(buf, firmware->data + sent, size);
3198
3199                 pipe = usb_sndbulkpipe(udev, 0x02);
3200                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3201                                    QCA_DFU_TIMEOUT);
3202                 if (err < 0) {
3203                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3204                                    sent, firmware->size, err);
3205                         break;
3206                 }
3207
3208                 if (size != len) {
3209                         bt_dev_err(hdev, "Failed to get bulk buffer");
3210                         err = -EILSEQ;
3211                         break;
3212                 }
3213
3214                 sent  += size;
3215                 count -= size;
3216         }
3217
3218 done:
3219         kfree(buf);
3220         return err;
3221 }
3222
3223 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3224                                          struct qca_version *ver,
3225                                          const struct qca_device_info *info)
3226 {
3227         struct qca_rampatch_version *rver;
3228         const struct firmware *fw;
3229         u32 ver_rom, ver_patch, rver_rom;
3230         u16 rver_rom_low, rver_rom_high, rver_patch;
3231         char fwname[64];
3232         int err;
3233
3234         ver_rom = le32_to_cpu(ver->rom_version);
3235         ver_patch = le32_to_cpu(ver->patch_version);
3236
3237         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3238
3239         err = request_firmware(&fw, fwname, &hdev->dev);
3240         if (err) {
3241                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3242                            fwname, err);
3243                 return err;
3244         }
3245
3246         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3247
3248         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3249         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3250         rver_patch = le16_to_cpu(rver->patch_version);
3251
3252         if (ver_rom & ~0xffffU) {
3253                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3254                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3255         } else {
3256                 rver_rom = rver_rom_low;
3257         }
3258
3259         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3260                     "firmware rome 0x%x build 0x%x",
3261                     rver_rom, rver_patch, ver_rom, ver_patch);
3262
3263         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3264                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3265                 err = -EINVAL;
3266                 goto done;
3267         }
3268
3269         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3270
3271 done:
3272         release_firmware(fw);
3273
3274         return err;
3275 }
3276
3277 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3278                                         const struct qca_version *ver)
3279 {
3280         u32 rom_version = le32_to_cpu(ver->rom_version);
3281         u16 flag = le16_to_cpu(ver->flag);
3282
3283         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3284                 /* The board_id should be split into two bytes
3285                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3286                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3287                  * we have several platforms, and platform IDs are continuously added
3288                  * Platform ID:
3289                  * 0x00 is for Mobile
3290                  * 0x01 is for X86
3291                  * 0x02 is for Automotive
3292                  * 0x03 is for Consumer electronic
3293                  */
3294                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3295                 const char *variant;
3296
3297                 switch (le32_to_cpu(ver->ram_version)) {
3298                 case WCN6855_2_0_RAM_VERSION_GF:
3299                 case WCN6855_2_1_RAM_VERSION_GF:
3300                         variant = "_gf";
3301                         break;
3302                 default:
3303                         variant = "";
3304                         break;
3305                 }
3306
3307                 if (board_id == 0) {
3308                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3309                                 rom_version, variant);
3310                 } else {
3311                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3312                                 rom_version, variant, board_id);
3313                 }
3314         } else {
3315                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3316                         rom_version);
3317         }
3318
3319 }
3320
3321 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3322                                     struct qca_version *ver,
3323                                     const struct qca_device_info *info)
3324 {
3325         const struct firmware *fw;
3326         char fwname[64];
3327         int err;
3328
3329         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3330
3331         err = request_firmware(&fw, fwname, &hdev->dev);
3332         if (err) {
3333                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3334                            fwname, err);
3335                 return err;
3336         }
3337
3338         bt_dev_info(hdev, "using NVM file: %s", fwname);
3339
3340         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3341
3342         release_firmware(fw);
3343
3344         return err;
3345 }
3346
3347 /* identify the ROM version and check whether patches are needed */
3348 static bool btusb_qca_need_patch(struct usb_device *udev)
3349 {
3350         struct qca_version ver;
3351
3352         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3353                                       sizeof(ver)) < 0)
3354                 return false;
3355         /* only low ROM versions need patches */
3356         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3357 }
3358
3359 static int btusb_setup_qca(struct hci_dev *hdev)
3360 {
3361         struct btusb_data *btdata = hci_get_drvdata(hdev);
3362         struct usb_device *udev = btdata->udev;
3363         const struct qca_device_info *info = NULL;
3364         struct qca_version ver;
3365         u32 ver_rom;
3366         u8 status;
3367         int i, err;
3368
3369         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3370                                         sizeof(ver));
3371         if (err < 0)
3372                 return err;
3373
3374         ver_rom = le32_to_cpu(ver.rom_version);
3375
3376         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3377                 if (ver_rom == qca_devices_table[i].rom_version)
3378                         info = &qca_devices_table[i];
3379         }
3380         if (!info) {
3381                 /* If the rom_version is not matched in the qca_devices_table
3382                  * and the high ROM version is not zero, we assume this chip no
3383                  * need to load the rampatch and nvm.
3384                  */
3385                 if (ver_rom & ~0xffffU)
3386                         return 0;
3387
3388                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3389                 return -ENODEV;
3390         }
3391
3392         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3393                                         sizeof(status));
3394         if (err < 0)
3395                 return err;
3396
3397         if (!(status & QCA_PATCH_UPDATED)) {
3398                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3399                 if (err < 0)
3400                         return err;
3401         }
3402
3403         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3404                                         sizeof(ver));
3405         if (err < 0)
3406                 return err;
3407
3408         if (!(status & QCA_SYSCFG_UPDATED)) {
3409                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3410                 if (err < 0)
3411                         return err;
3412
3413                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3414                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3415                  * cause potential enable failure.
3416                  */
3417                 if (info->rom_version >= 0x00130201)
3418                         msleep(QCA_BT_RESET_WAIT_MS);
3419         }
3420
3421         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3422          * work with the likes of HSP/HFP mSBC.
3423          */
3424         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3425
3426         return 0;
3427 }
3428
3429 static inline int __set_diag_interface(struct hci_dev *hdev)
3430 {
3431         struct btusb_data *data = hci_get_drvdata(hdev);
3432         struct usb_interface *intf = data->diag;
3433         int i;
3434
3435         if (!data->diag)
3436                 return -ENODEV;
3437
3438         data->diag_tx_ep = NULL;
3439         data->diag_rx_ep = NULL;
3440
3441         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3442                 struct usb_endpoint_descriptor *ep_desc;
3443
3444                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3445
3446                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3447                         data->diag_tx_ep = ep_desc;
3448                         continue;
3449                 }
3450
3451                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3452                         data->diag_rx_ep = ep_desc;
3453                         continue;
3454                 }
3455         }
3456
3457         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3458                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3459                 return -ENODEV;
3460         }
3461
3462         return 0;
3463 }
3464
3465 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3466 {
3467         struct btusb_data *data = hci_get_drvdata(hdev);
3468         struct sk_buff *skb;
3469         struct urb *urb;
3470         unsigned int pipe;
3471
3472         if (!data->diag_tx_ep)
3473                 return ERR_PTR(-ENODEV);
3474
3475         urb = usb_alloc_urb(0, GFP_KERNEL);
3476         if (!urb)
3477                 return ERR_PTR(-ENOMEM);
3478
3479         skb = bt_skb_alloc(2, GFP_KERNEL);
3480         if (!skb) {
3481                 usb_free_urb(urb);
3482                 return ERR_PTR(-ENOMEM);
3483         }
3484
3485         skb_put_u8(skb, 0xf0);
3486         skb_put_u8(skb, enable);
3487
3488         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3489
3490         usb_fill_bulk_urb(urb, data->udev, pipe,
3491                           skb->data, skb->len, btusb_tx_complete, skb);
3492
3493         skb->dev = (void *)hdev;
3494
3495         return urb;
3496 }
3497
3498 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3499 {
3500         struct btusb_data *data = hci_get_drvdata(hdev);
3501         struct urb *urb;
3502
3503         if (!data->diag)
3504                 return -ENODEV;
3505
3506         if (!test_bit(HCI_RUNNING, &hdev->flags))
3507                 return -ENETDOWN;
3508
3509         urb = alloc_diag_urb(hdev, enable);
3510         if (IS_ERR(urb))
3511                 return PTR_ERR(urb);
3512
3513         return submit_or_queue_tx_urb(hdev, urb);
3514 }
3515
3516 #ifdef CONFIG_PM
3517 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3518 {
3519         struct btusb_data *data = priv;
3520
3521         pm_wakeup_event(&data->udev->dev, 0);
3522         pm_system_wakeup();
3523
3524         /* Disable only if not already disabled (keep it balanced) */
3525         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3526                 disable_irq_nosync(irq);
3527                 disable_irq_wake(irq);
3528         }
3529         return IRQ_HANDLED;
3530 }
3531
3532 static const struct of_device_id btusb_match_table[] = {
3533         { .compatible = "usb1286,204e" },
3534         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3535         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3536         { }
3537 };
3538 MODULE_DEVICE_TABLE(of, btusb_match_table);
3539
3540 /* Use an oob wakeup pin? */
3541 static int btusb_config_oob_wake(struct hci_dev *hdev)
3542 {
3543         struct btusb_data *data = hci_get_drvdata(hdev);
3544         struct device *dev = &data->udev->dev;
3545         int irq, ret;
3546
3547         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3548
3549         if (!of_match_device(btusb_match_table, dev))
3550                 return 0;
3551
3552         /* Move on if no IRQ specified */
3553         irq = of_irq_get_byname(dev->of_node, "wakeup");
3554         if (irq <= 0) {
3555                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3556                 return 0;
3557         }
3558
3559         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3560         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3561                                0, "OOB Wake-on-BT", data);
3562         if (ret) {
3563                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3564                 return ret;
3565         }
3566
3567         ret = device_init_wakeup(dev, true);
3568         if (ret) {
3569                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3570                 return ret;
3571         }
3572
3573         data->oob_wake_irq = irq;
3574         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3575         return 0;
3576 }
3577 #endif
3578
3579 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3580 {
3581         if (dmi_check_system(btusb_needs_reset_resume_table))
3582                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3583 }
3584
3585 static bool btusb_wakeup(struct hci_dev *hdev)
3586 {
3587         struct btusb_data *data = hci_get_drvdata(hdev);
3588
3589         return device_may_wakeup(&data->udev->dev);
3590 }
3591
3592 static int btusb_shutdown_qca(struct hci_dev *hdev)
3593 {
3594         struct sk_buff *skb;
3595
3596         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3597         if (IS_ERR(skb)) {
3598                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3599                 return PTR_ERR(skb);
3600         }
3601         kfree_skb(skb);
3602
3603         return 0;
3604 }
3605
3606 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3607                                     size_t count, loff_t *ppos)
3608 {
3609         struct btusb_data *data = file->private_data;
3610         char buf[3];
3611
3612         buf[0] = data->poll_sync ? 'Y' : 'N';
3613         buf[1] = '\n';
3614         buf[2] = '\0';
3615         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3616 }
3617
3618 static ssize_t force_poll_sync_write(struct file *file,
3619                                      const char __user *user_buf,
3620                                      size_t count, loff_t *ppos)
3621 {
3622         struct btusb_data *data = file->private_data;
3623         bool enable;
3624         int err;
3625
3626         err = kstrtobool_from_user(user_buf, count, &enable);
3627         if (err)
3628                 return err;
3629
3630         /* Only allow changes while the adapter is down */
3631         if (test_bit(HCI_UP, &data->hdev->flags))
3632                 return -EPERM;
3633
3634         if (data->poll_sync == enable)
3635                 return -EALREADY;
3636
3637         data->poll_sync = enable;
3638
3639         return count;
3640 }
3641
3642 static const struct file_operations force_poll_sync_fops = {
3643         .open           = simple_open,
3644         .read           = force_poll_sync_read,
3645         .write          = force_poll_sync_write,
3646         .llseek         = default_llseek,
3647 };
3648
3649 static int btusb_probe(struct usb_interface *intf,
3650                        const struct usb_device_id *id)
3651 {
3652         struct usb_endpoint_descriptor *ep_desc;
3653         struct gpio_desc *reset_gpio;
3654         struct btusb_data *data;
3655         struct hci_dev *hdev;
3656         unsigned ifnum_base;
3657         int i, err, priv_size;
3658
3659         BT_DBG("intf %p id %p", intf, id);
3660
3661         /* interface numbers are hardcoded in the spec */
3662         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3663                 if (!(id->driver_info & BTUSB_IFNUM_2))
3664                         return -ENODEV;
3665                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3666                         return -ENODEV;
3667         }
3668
3669         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3670
3671         if (!id->driver_info) {
3672                 const struct usb_device_id *match;
3673
3674                 match = usb_match_id(intf, blacklist_table);
3675                 if (match)
3676                         id = match;
3677         }
3678
3679         if (id->driver_info == BTUSB_IGNORE)
3680                 return -ENODEV;
3681
3682         if (id->driver_info & BTUSB_ATH3012) {
3683                 struct usb_device *udev = interface_to_usbdev(intf);
3684
3685                 /* Old firmware would otherwise let ath3k driver load
3686                  * patch and sysconfig files
3687                  */
3688                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3689                     !btusb_qca_need_patch(udev))
3690                         return -ENODEV;
3691         }
3692
3693         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3694         if (!data)
3695                 return -ENOMEM;
3696
3697         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3698                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3699
3700                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3701                         data->intr_ep = ep_desc;
3702                         continue;
3703                 }
3704
3705                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3706                         data->bulk_tx_ep = ep_desc;
3707                         continue;
3708                 }
3709
3710                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3711                         data->bulk_rx_ep = ep_desc;
3712                         continue;
3713                 }
3714         }
3715
3716         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3717                 return -ENODEV;
3718
3719         if (id->driver_info & BTUSB_AMP) {
3720                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3721                 data->cmdreq = 0x2b;
3722         } else {
3723                 data->cmdreq_type = USB_TYPE_CLASS;
3724                 data->cmdreq = 0x00;
3725         }
3726
3727         data->udev = interface_to_usbdev(intf);
3728         data->intf = intf;
3729
3730         INIT_WORK(&data->work, btusb_work);
3731         INIT_WORK(&data->waker, btusb_waker);
3732         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3733
3734         skb_queue_head_init(&data->acl_q);
3735
3736         init_usb_anchor(&data->deferred);
3737         init_usb_anchor(&data->tx_anchor);
3738         spin_lock_init(&data->txlock);
3739
3740         init_usb_anchor(&data->intr_anchor);
3741         init_usb_anchor(&data->bulk_anchor);
3742         init_usb_anchor(&data->isoc_anchor);
3743         init_usb_anchor(&data->diag_anchor);
3744         init_usb_anchor(&data->ctrl_anchor);
3745         spin_lock_init(&data->rxlock);
3746
3747         priv_size = 0;
3748
3749         data->recv_event = hci_recv_frame;
3750         data->recv_bulk = btusb_recv_bulk;
3751
3752         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3753                 /* Allocate extra space for Intel device */
3754                 priv_size += sizeof(struct btintel_data);
3755
3756                 /* Override the rx handlers */
3757                 data->recv_event = btusb_recv_event_intel;
3758                 data->recv_bulk = btusb_recv_bulk_intel;
3759         }
3760
3761         data->recv_acl = hci_recv_frame;
3762
3763         hdev = hci_alloc_dev_priv(priv_size);
3764         if (!hdev)
3765                 return -ENOMEM;
3766
3767         hdev->bus = HCI_USB;
3768         hci_set_drvdata(hdev, data);
3769
3770         if (id->driver_info & BTUSB_AMP)
3771                 hdev->dev_type = HCI_AMP;
3772         else
3773                 hdev->dev_type = HCI_PRIMARY;
3774
3775         data->hdev = hdev;
3776
3777         SET_HCIDEV_DEV(hdev, &intf->dev);
3778
3779         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3780                                         GPIOD_OUT_LOW);
3781         if (IS_ERR(reset_gpio)) {
3782                 err = PTR_ERR(reset_gpio);
3783                 goto out_free_dev;
3784         } else if (reset_gpio) {
3785                 data->reset_gpio = reset_gpio;
3786         }
3787
3788         hdev->open   = btusb_open;
3789         hdev->close  = btusb_close;
3790         hdev->flush  = btusb_flush;
3791         hdev->send   = btusb_send_frame;
3792         hdev->notify = btusb_notify;
3793         hdev->wakeup = btusb_wakeup;
3794
3795 #ifdef CONFIG_PM
3796         err = btusb_config_oob_wake(hdev);
3797         if (err)
3798                 goto out_free_dev;
3799
3800         /* Marvell devices may need a specific chip configuration */
3801         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3802                 err = marvell_config_oob_wake(hdev);
3803                 if (err)
3804                         goto out_free_dev;
3805         }
3806 #endif
3807         if (id->driver_info & BTUSB_CW6622)
3808                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3809
3810         if (id->driver_info & BTUSB_BCM2045)
3811                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3812
3813         if (id->driver_info & BTUSB_BCM92035)
3814                 hdev->setup = btusb_setup_bcm92035;
3815
3816         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3817             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3818                 hdev->manufacturer = 15;
3819                 hdev->setup = btbcm_setup_patchram;
3820                 hdev->set_diag = btusb_bcm_set_diag;
3821                 hdev->set_bdaddr = btbcm_set_bdaddr;
3822
3823                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3824                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3825         }
3826
3827         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3828             (id->driver_info & BTUSB_BCM_APPLE)) {
3829                 hdev->manufacturer = 15;
3830                 hdev->setup = btbcm_setup_apple;
3831                 hdev->set_diag = btusb_bcm_set_diag;
3832
3833                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3834                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3835         }
3836
3837         /* Combined Intel Device setup to support multiple setup routine */
3838         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3839                 err = btintel_configure_setup(hdev);
3840                 if (err)
3841                         goto out_free_dev;
3842
3843                 /* Transport specific configuration */
3844                 hdev->send = btusb_send_frame_intel;
3845                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3846
3847                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
3848                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
3849
3850                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
3851                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
3852
3853                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
3854                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
3855         }
3856
3857         if (id->driver_info & BTUSB_MARVELL)
3858                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3859
3860         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3861             (id->driver_info & BTUSB_MEDIATEK)) {
3862                 hdev->setup = btusb_mtk_setup;
3863                 hdev->shutdown = btusb_mtk_shutdown;
3864                 hdev->manufacturer = 70;
3865                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
3866                 hdev->set_bdaddr = btmtk_set_bdaddr;
3867                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3868                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3869                 data->recv_acl = btusb_recv_acl_mtk;
3870         }
3871
3872         if (id->driver_info & BTUSB_SWAVE) {
3873                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3874                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3875         }
3876
3877         if (id->driver_info & BTUSB_INTEL_BOOT) {
3878                 hdev->manufacturer = 2;
3879                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3880         }
3881
3882         if (id->driver_info & BTUSB_ATH3012) {
3883                 data->setup_on_usb = btusb_setup_qca;
3884                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3885                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3886                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3887         }
3888
3889         if (id->driver_info & BTUSB_QCA_ROME) {
3890                 data->setup_on_usb = btusb_setup_qca;
3891                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3892                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3893                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3894                 btusb_check_needs_reset_resume(intf);
3895         }
3896
3897         if (id->driver_info & BTUSB_QCA_WCN6855) {
3898                 data->setup_on_usb = btusb_setup_qca;
3899                 hdev->shutdown = btusb_shutdown_qca;
3900                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
3901                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3902                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3903                 hci_set_msft_opcode(hdev, 0xFD70);
3904         }
3905
3906         if (id->driver_info & BTUSB_AMP) {
3907                 /* AMP controllers do not support SCO packets */
3908                 data->isoc = NULL;
3909         } else {
3910                 /* Interface orders are hardcoded in the specification */
3911                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3912                 data->isoc_ifnum = ifnum_base + 1;
3913         }
3914
3915         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3916             (id->driver_info & BTUSB_REALTEK)) {
3917                 hdev->setup = btrtl_setup_realtek;
3918                 hdev->shutdown = btrtl_shutdown_realtek;
3919                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3920
3921                 /* Realtek devices need to set remote wakeup on auto-suspend */
3922                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
3923                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
3924         }
3925
3926         if (!reset)
3927                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3928
3929         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3930                 if (!disable_scofix)
3931                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3932         }
3933
3934         if (id->driver_info & BTUSB_BROKEN_ISOC)
3935                 data->isoc = NULL;
3936
3937         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3938                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3939
3940         if (id->driver_info & BTUSB_VALID_LE_STATES)
3941                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
3942
3943         if (id->driver_info & BTUSB_DIGIANSWER) {
3944                 data->cmdreq_type = USB_TYPE_VENDOR;
3945                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3946         }
3947
3948         if (id->driver_info & BTUSB_CSR) {
3949                 struct usb_device *udev = data->udev;
3950                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3951
3952                 /* Old firmware would otherwise execute USB reset */
3953                 if (bcdDevice < 0x117)
3954                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3955
3956                 /* This must be set first in case we disable it for fakes */
3957                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3958
3959                 /* Fake CSR devices with broken commands */
3960                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
3961                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
3962                         hdev->setup = btusb_setup_csr;
3963         }
3964
3965         if (id->driver_info & BTUSB_SNIFFER) {
3966                 struct usb_device *udev = data->udev;
3967
3968                 /* New sniffer firmware has crippled HCI interface */
3969                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3970                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3971         }
3972
3973         if (id->driver_info & BTUSB_INTEL_BOOT) {
3974                 /* A bug in the bootloader causes that interrupt interface is
3975                  * only enabled after receiving SetInterface(0, AltSetting=0).
3976                  */
3977                 err = usb_set_interface(data->udev, 0, 0);
3978                 if (err < 0) {
3979                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3980                         goto out_free_dev;
3981                 }
3982         }
3983
3984         if (data->isoc) {
3985                 err = usb_driver_claim_interface(&btusb_driver,
3986                                                  data->isoc, data);
3987                 if (err < 0)
3988                         goto out_free_dev;
3989         }
3990
3991         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3992                 if (!usb_driver_claim_interface(&btusb_driver,
3993                                                 data->diag, data))
3994                         __set_diag_interface(hdev);
3995                 else
3996                         data->diag = NULL;
3997         }
3998
3999         if (enable_autosuspend)
4000                 usb_enable_autosuspend(data->udev);
4001
4002         err = hci_register_dev(hdev);
4003         if (err < 0)
4004                 goto out_free_dev;
4005
4006         usb_set_intfdata(intf, data);
4007
4008         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4009                             &force_poll_sync_fops);
4010
4011         return 0;
4012
4013 out_free_dev:
4014         if (data->reset_gpio)
4015                 gpiod_put(data->reset_gpio);
4016         hci_free_dev(hdev);
4017         return err;
4018 }
4019
4020 static void btusb_disconnect(struct usb_interface *intf)
4021 {
4022         struct btusb_data *data = usb_get_intfdata(intf);
4023         struct hci_dev *hdev;
4024
4025         BT_DBG("intf %p", intf);
4026
4027         if (!data)
4028                 return;
4029
4030         hdev = data->hdev;
4031         usb_set_intfdata(data->intf, NULL);
4032
4033         if (data->isoc)
4034                 usb_set_intfdata(data->isoc, NULL);
4035
4036         if (data->diag)
4037                 usb_set_intfdata(data->diag, NULL);
4038
4039         hci_unregister_dev(hdev);
4040
4041         if (intf == data->intf) {
4042                 if (data->isoc)
4043                         usb_driver_release_interface(&btusb_driver, data->isoc);
4044                 if (data->diag)
4045                         usb_driver_release_interface(&btusb_driver, data->diag);
4046         } else if (intf == data->isoc) {
4047                 if (data->diag)
4048                         usb_driver_release_interface(&btusb_driver, data->diag);
4049                 usb_driver_release_interface(&btusb_driver, data->intf);
4050         } else if (intf == data->diag) {
4051                 usb_driver_release_interface(&btusb_driver, data->intf);
4052                 if (data->isoc)
4053                         usb_driver_release_interface(&btusb_driver, data->isoc);
4054         }
4055
4056         if (data->oob_wake_irq)
4057                 device_init_wakeup(&data->udev->dev, false);
4058
4059         if (data->reset_gpio)
4060                 gpiod_put(data->reset_gpio);
4061
4062         hci_free_dev(hdev);
4063 }
4064
4065 #ifdef CONFIG_PM
4066 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4067 {
4068         struct btusb_data *data = usb_get_intfdata(intf);
4069
4070         BT_DBG("intf %p", intf);
4071
4072         if (data->suspend_count++)
4073                 return 0;
4074
4075         spin_lock_irq(&data->txlock);
4076         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4077                 set_bit(BTUSB_SUSPENDING, &data->flags);
4078                 spin_unlock_irq(&data->txlock);
4079         } else {
4080                 spin_unlock_irq(&data->txlock);
4081                 data->suspend_count--;
4082                 return -EBUSY;
4083         }
4084
4085         cancel_work_sync(&data->work);
4086
4087         btusb_stop_traffic(data);
4088         usb_kill_anchored_urbs(&data->tx_anchor);
4089
4090         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4091                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4092                 enable_irq_wake(data->oob_wake_irq);
4093                 enable_irq(data->oob_wake_irq);
4094         }
4095
4096         /* For global suspend, Realtek devices lose the loaded fw
4097          * in them. But for autosuspend, firmware should remain.
4098          * Actually, it depends on whether the usb host sends
4099          * set feature (enable wakeup) or not.
4100          */
4101         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4102                 if (PMSG_IS_AUTO(message) &&
4103                     device_can_wakeup(&data->udev->dev))
4104                         data->udev->do_remote_wakeup = 1;
4105                 else if (!PMSG_IS_AUTO(message) &&
4106                          !device_may_wakeup(&data->udev->dev)) {
4107                         data->udev->do_remote_wakeup = 0;
4108                         data->udev->reset_resume = 1;
4109                 }
4110         }
4111
4112         return 0;
4113 }
4114
4115 static void play_deferred(struct btusb_data *data)
4116 {
4117         struct urb *urb;
4118         int err;
4119
4120         while ((urb = usb_get_from_anchor(&data->deferred))) {
4121                 usb_anchor_urb(urb, &data->tx_anchor);
4122
4123                 err = usb_submit_urb(urb, GFP_ATOMIC);
4124                 if (err < 0) {
4125                         if (err != -EPERM && err != -ENODEV)
4126                                 BT_ERR("%s urb %p submission failed (%d)",
4127                                        data->hdev->name, urb, -err);
4128                         kfree(urb->setup_packet);
4129                         usb_unanchor_urb(urb);
4130                         usb_free_urb(urb);
4131                         break;
4132                 }
4133
4134                 data->tx_in_flight++;
4135                 usb_free_urb(urb);
4136         }
4137
4138         /* Cleanup the rest deferred urbs. */
4139         while ((urb = usb_get_from_anchor(&data->deferred))) {
4140                 kfree(urb->setup_packet);
4141                 usb_free_urb(urb);
4142         }
4143 }
4144
4145 static int btusb_resume(struct usb_interface *intf)
4146 {
4147         struct btusb_data *data = usb_get_intfdata(intf);
4148         struct hci_dev *hdev = data->hdev;
4149         int err = 0;
4150
4151         BT_DBG("intf %p", intf);
4152
4153         if (--data->suspend_count)
4154                 return 0;
4155
4156         /* Disable only if not already disabled (keep it balanced) */
4157         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4158                 disable_irq(data->oob_wake_irq);
4159                 disable_irq_wake(data->oob_wake_irq);
4160         }
4161
4162         if (!test_bit(HCI_RUNNING, &hdev->flags))
4163                 goto done;
4164
4165         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4166                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4167                 if (err < 0) {
4168                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4169                         goto failed;
4170                 }
4171         }
4172
4173         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4174                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4175                 if (err < 0) {
4176                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4177                         goto failed;
4178                 }
4179
4180                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4181         }
4182
4183         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4184                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4185                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4186                 else
4187                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4188         }
4189
4190         spin_lock_irq(&data->txlock);
4191         play_deferred(data);
4192         clear_bit(BTUSB_SUSPENDING, &data->flags);
4193         spin_unlock_irq(&data->txlock);
4194         schedule_work(&data->work);
4195
4196         return 0;
4197
4198 failed:
4199         usb_scuttle_anchored_urbs(&data->deferred);
4200 done:
4201         spin_lock_irq(&data->txlock);
4202         clear_bit(BTUSB_SUSPENDING, &data->flags);
4203         spin_unlock_irq(&data->txlock);
4204
4205         return err;
4206 }
4207 #endif
4208
4209 static struct usb_driver btusb_driver = {
4210         .name           = "btusb",
4211         .probe          = btusb_probe,
4212         .disconnect     = btusb_disconnect,
4213 #ifdef CONFIG_PM
4214         .suspend        = btusb_suspend,
4215         .resume         = btusb_resume,
4216 #endif
4217         .id_table       = btusb_table,
4218         .supports_autosuspend = 1,
4219         .disable_hub_initiated_lpm = 1,
4220 };
4221
4222 module_usb_driver(btusb_driver);
4223
4224 module_param(disable_scofix, bool, 0644);
4225 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4226
4227 module_param(force_scofix, bool, 0644);
4228 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4229
4230 module_param(enable_autosuspend, bool, 0644);
4231 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4232
4233 module_param(reset, bool, 0644);
4234 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4235
4236 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4237 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4238 MODULE_VERSION(VERSION);
4239 MODULE_LICENSE("GPL");