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 <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60 #define BTUSB_WIDEBAND_SPEECH   0x400000
  61 #define BTUSB_VALID_LE_STATES   0x800000
  62
  63 static const struct usb_device_id btusb_table[] = {
  64         /* Generic Bluetooth USB device */
  65         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  66
  67         /* Generic Bluetooth AMP device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  69
  70         /* Generic Bluetooth USB interface */
  71         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  72
  73         /* Apple-specific (Broadcom) devices */
  74         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  75           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  76
  77         /* MediaTek MT76x0E */
  78         { USB_DEVICE(0x0e8d, 0x763f) },
  79
  80         /* Broadcom SoftSailing reporting vendor specific */
  81         { USB_DEVICE(0x0a5c, 0x21e1) },
  82
  83         /* Apple MacBookPro 7,1 */
  84         { USB_DEVICE(0x05ac, 0x8213) },
  85
  86         /* Apple iMac11,1 */
  87         { USB_DEVICE(0x05ac, 0x8215) },
  88
  89         /* Apple MacBookPro6,2 */
  90         { USB_DEVICE(0x05ac, 0x8218) },
  91
  92         /* Apple MacBookAir3,1, MacBookAir3,2 */
  93         { USB_DEVICE(0x05ac, 0x821b) },
  94
  95         /* Apple MacBookAir4,1 */
  96         { USB_DEVICE(0x05ac, 0x821f) },
  97
  98         /* Apple MacBookPro8,2 */
  99         { USB_DEVICE(0x05ac, 0x821a) },
 100
 101         /* Apple MacMini5,1 */
 102         { USB_DEVICE(0x05ac, 0x8281) },
 103
 104         /* AVM BlueFRITZ! USB v2.0 */
 105         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 106
 107         /* Bluetooth Ultraport Module from IBM */
 108         { USB_DEVICE(0x04bf, 0x030a) },
 109
 110         /* ALPS Modules with non-standard id */
 111         { USB_DEVICE(0x044e, 0x3001) },
 112         { USB_DEVICE(0x044e, 0x3002) },
 113
 114         /* Ericsson with non-standard id */
 115         { USB_DEVICE(0x0bdb, 0x1002) },
 116
 117         /* Canyon CN-BTU1 with HID interfaces */
 118         { USB_DEVICE(0x0c10, 0x0000) },
 119
 120         /* Broadcom BCM20702A0 */
 121         { USB_DEVICE(0x413c, 0x8197) },
 122
 123         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 124         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 125
 126         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 128           .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Broadcom BCM920703 (HTC Vive) */
 131         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 132           .driver_info = BTUSB_BCM_PATCHRAM },
 133
 134         /* Foxconn - Hon Hai */
 135         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 136           .driver_info = BTUSB_BCM_PATCHRAM },
 137
 138         /* Lite-On Technology - Broadcom based */
 139         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 140           .driver_info = BTUSB_BCM_PATCHRAM },
 141
 142         /* Broadcom devices with vendor specific id */
 143         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 144           .driver_info = BTUSB_BCM_PATCHRAM },
 145
 146         /* ASUSTek Computer - Broadcom based */
 147         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 148           .driver_info = BTUSB_BCM_PATCHRAM },
 149
 150         /* Belkin F8065bf - Broadcom based */
 151         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 152           .driver_info = BTUSB_BCM_PATCHRAM },
 153
 154         /* IMC Networks - Broadcom based */
 155         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 156           .driver_info = BTUSB_BCM_PATCHRAM },
 157
 158         /* Dell Computer - Broadcom based  */
 159         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 160           .driver_info = BTUSB_BCM_PATCHRAM },
 161
 162         /* Toshiba Corp - Broadcom based */
 163         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 164           .driver_info = BTUSB_BCM_PATCHRAM },
 165
 166         /* Intel Bluetooth USB Bootloader (RAM module) */
 167         { USB_DEVICE(0x8087, 0x0a5a),
 168           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 169
 170         { }     /* Terminating entry */
 171 };
 172
 173 MODULE_DEVICE_TABLE(usb, btusb_table);
 174
 175 static const struct usb_device_id blacklist_table[] = {
 176         /* CSR BlueCore devices */
 177         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 178
 179         /* Broadcom BCM2033 without firmware */
 180         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 181
 182         /* Broadcom BCM2045 devices */
 183         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 184
 185         /* Atheros 3011 with sflash firmware */
 186         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 193
 194         /* Atheros AR9285 Malbec with sflash firmware */
 195         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 196
 197         /* Atheros 3012 with sflash firmware */
 198         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 248
 249         /* Atheros AR5BBU12 with sflash firmware */
 250         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 251
 252         /* Atheros AR5BBU12 with sflash firmware */
 253         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 255
 256         /* QCA ROME chipset */
 257         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 275
 276         /* Broadcom BCM2035 */
 277         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 278         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 279         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* Broadcom BCM2045 */
 282         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 283         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* IBM/Lenovo ThinkPad with Broadcom chip */
 286         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 287         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* HP laptop with Broadcom chip */
 290         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Dell laptop with Broadcom chip */
 293         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 294
 295         /* Dell Wireless 370 and 410 devices */
 296         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 297         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Belkin F8T012 and F8T013 devices */
 300         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 301         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Asus WL-BTD202 device */
 304         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* Kensington Bluetooth USB adapter */
 307         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 308
 309         /* RTX Telecom based adapters with buggy SCO support */
 310         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 311         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 312
 313         /* CONWISE Technology based adapters with buggy SCO support */
 314         { USB_DEVICE(0x0e5e, 0x6622),
 315           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 316
 317         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 318         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 319
 320         /* Digianswer devices */
 321         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 322         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 323
 324         /* CSR BlueCore Bluetooth Sniffer */
 325         { USB_DEVICE(0x0a12, 0x0002),
 326           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 327
 328         /* Frontline ComProbe Bluetooth Sniffer */
 329         { USB_DEVICE(0x16d3, 0x0002),
 330           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 331
 332         /* Marvell Bluetooth devices */
 333         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 334         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 335         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 336
 337         /* Intel Bluetooth devices */
 338         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 339                                                      BTUSB_WIDEBAND_SPEECH |
 340                                                      BTUSB_VALID_LE_STATES },
 341         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 342                                                      BTUSB_WIDEBAND_SPEECH },
 343         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 344                                                      BTUSB_WIDEBAND_SPEECH },
 345         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEW |
 346                                                      BTUSB_WIDEBAND_SPEECH},
 347         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 348         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 349         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 350         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 351                                                      BTUSB_WIDEBAND_SPEECH },
 352         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 353                                                      BTUSB_WIDEBAND_SPEECH },
 354         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 355                                                      BTUSB_WIDEBAND_SPEECH |
 356                                                      BTUSB_VALID_LE_STATES },
 357
 358         /* Other Intel Bluetooth devices */
 359         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 360           .driver_info = BTUSB_IGNORE },
 361
 362         /* Realtek 8822CE Bluetooth devices */
 363         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 364                                                      BTUSB_WIDEBAND_SPEECH },
 365
 366         /* Realtek Bluetooth devices */
 367         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 368           .driver_info = BTUSB_REALTEK },
 369
 370         /* MediaTek Bluetooth devices */
 371         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 372           .driver_info = BTUSB_MEDIATEK },
 373
 374         /* Additional Realtek 8723AE Bluetooth devices */
 375         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 376         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 377
 378         /* Additional Realtek 8723BE Bluetooth devices */
 379         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 380         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 382         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 383         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 384         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 385
 386         /* Additional Realtek 8723BU Bluetooth devices */
 387         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 388
 389         /* Additional Realtek 8723DE Bluetooth devices */
 390         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 391         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 392
 393         /* Additional Realtek 8821AE Bluetooth devices */
 394         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 395         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 396         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 397         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 398         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 399
 400         /* Additional Realtek 8822BE Bluetooth devices */
 401         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 402         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 403
 404         /* Additional Realtek 8822CE Bluetooth devices */
 405         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 406         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 407
 408         /* Silicon Wave based devices */
 409         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 410
 411         { }     /* Terminating entry */
 412 };
 413
 414 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 415  * this is a problem with the platform (likely shutting off all power) not with
 416  * the module itself. So we use a DMI list to match known broken platforms.
 417  */
 418 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 419         {
 420                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 421                 .matches = {
 422                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 423                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 424                 },
 425         },
 426         {
 427                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 428                 .matches = {
 429                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 430                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 431                 },
 432         },
 433         {
 434                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 435                 .matches = {
 436                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 437                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 438                 },
 439         },
 440         {}
 441 };
 442
 443 #define BTUSB_MAX_ISOC_FRAMES   10
 444
 445 #define BTUSB_INTR_RUNNING      0
 446 #define BTUSB_BULK_RUNNING      1
 447 #define BTUSB_ISOC_RUNNING      2
 448 #define BTUSB_SUSPENDING        3
 449 #define BTUSB_DID_ISO_RESUME    4
 450 #define BTUSB_BOOTLOADER        5
 451 #define BTUSB_DOWNLOADING       6
 452 #define BTUSB_FIRMWARE_LOADED   7
 453 #define BTUSB_FIRMWARE_FAILED   8
 454 #define BTUSB_BOOTING           9
 455 #define BTUSB_DIAG_RUNNING      10
 456 #define BTUSB_OOB_WAKE_ENABLED  11
 457 #define BTUSB_HW_RESET_ACTIVE   12
 458 #define BTUSB_TX_WAIT_VND_EVT   13
 459 #define BTUSB_WAKEUP_DISABLE    14
 460 #define BTUSB_USE_ALT1_FOR_WBS  15
 461
 462 struct btusb_data {
 463         struct hci_dev       *hdev;
 464         struct usb_device    *udev;
 465         struct usb_interface *intf;
 466         struct usb_interface *isoc;
 467         struct usb_interface *diag;
 468         unsigned isoc_ifnum;
 469
 470         unsigned long flags;
 471
 472         struct work_struct work;
 473         struct work_struct waker;
 474
 475         struct usb_anchor deferred;
 476         struct usb_anchor tx_anchor;
 477         int tx_in_flight;
 478         spinlock_t txlock;
 479
 480         struct usb_anchor intr_anchor;
 481         struct usb_anchor bulk_anchor;
 482         struct usb_anchor isoc_anchor;
 483         struct usb_anchor diag_anchor;
 484         struct usb_anchor ctrl_anchor;
 485         spinlock_t rxlock;
 486
 487         struct sk_buff *evt_skb;
 488         struct sk_buff *acl_skb;
 489         struct sk_buff *sco_skb;
 490
 491         struct usb_endpoint_descriptor *intr_ep;
 492         struct usb_endpoint_descriptor *bulk_tx_ep;
 493         struct usb_endpoint_descriptor *bulk_rx_ep;
 494         struct usb_endpoint_descriptor *isoc_tx_ep;
 495         struct usb_endpoint_descriptor *isoc_rx_ep;
 496         struct usb_endpoint_descriptor *diag_tx_ep;
 497         struct usb_endpoint_descriptor *diag_rx_ep;
 498
 499         struct gpio_desc *reset_gpio;
 500
 501         __u8 cmdreq_type;
 502         __u8 cmdreq;
 503
 504         unsigned int sco_num;
 505         unsigned int air_mode;
 506         bool usb_alt6_packet_flow;
 507         int isoc_altsetting;
 508         int suspend_count;
 509
 510         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 511         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 512
 513         int (*setup_on_usb)(struct hci_dev *hdev);
 514
 515         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 516         unsigned cmd_timeout_cnt;
 517 };
 518
 519 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 520 {
 521         struct btusb_data *data = hci_get_drvdata(hdev);
 522         struct gpio_desc *reset_gpio = data->reset_gpio;
 523
 524         if (++data->cmd_timeout_cnt < 5)
 525                 return;
 526
 527         if (!reset_gpio) {
 528                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 529                 return;
 530         }
 531
 532         /*
 533          * Toggle the hard reset line if the platform provides one. The reset
 534          * is going to yank the device off the USB and then replug. So doing
 535          * once is enough. The cleanup is handled correctly on the way out
 536          * (standard USB disconnect), and the new device is detected cleanly
 537          * and bound to the driver again like it should be.
 538          */
 539         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 540                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 541                 return;
 542         }
 543
 544         bt_dev_err(hdev, "Initiating HW reset via gpio");
 545         gpiod_set_value_cansleep(reset_gpio, 1);
 546         msleep(100);
 547         gpiod_set_value_cansleep(reset_gpio, 0);
 548 }
 549
 550 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 551 {
 552         struct btusb_data *data = hci_get_drvdata(hdev);
 553         struct gpio_desc *reset_gpio = data->reset_gpio;
 554
 555         if (++data->cmd_timeout_cnt < 5)
 556                 return;
 557
 558         if (!reset_gpio) {
 559                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 560                 return;
 561         }
 562
 563         /* Toggle the hard reset line. The Realtek device is going to
 564          * yank itself off the USB and then replug. The cleanup is handled
 565          * correctly on the way out (standard USB disconnect), and the new
 566          * device is detected cleanly and bound to the driver again like
 567          * it should be.
 568          */
 569         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 570                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 571                 return;
 572         }
 573
 574         bt_dev_err(hdev, "Reset Realtek device via gpio");
 575         gpiod_set_value_cansleep(reset_gpio, 1);
 576         msleep(200);
 577         gpiod_set_value_cansleep(reset_gpio, 0);
 578 }
 579
 580 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 581 {
 582         struct btusb_data *data = hci_get_drvdata(hdev);
 583         int err;
 584
 585         if (++data->cmd_timeout_cnt < 5)
 586                 return;
 587
 588         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 589         /* This is not an unbalanced PM reference since the device will reset */
 590         err = usb_autopm_get_interface(data->intf);
 591         if (!err)
 592                 usb_queue_reset_device(data->intf);
 593         else
 594                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 595 }
 596
 597 static inline void btusb_free_frags(struct btusb_data *data)
 598 {
 599         unsigned long flags;
 600
 601         spin_lock_irqsave(&data->rxlock, flags);
 602
 603         kfree_skb(data->evt_skb);
 604         data->evt_skb = NULL;
 605
 606         kfree_skb(data->acl_skb);
 607         data->acl_skb = NULL;
 608
 609         kfree_skb(data->sco_skb);
 610         data->sco_skb = NULL;
 611
 612         spin_unlock_irqrestore(&data->rxlock, flags);
 613 }
 614
 615 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 616 {
 617         struct sk_buff *skb;
 618         unsigned long flags;
 619         int err = 0;
 620
 621         spin_lock_irqsave(&data->rxlock, flags);
 622         skb = data->evt_skb;
 623
 624         while (count) {
 625                 int len;
 626
 627                 if (!skb) {
 628                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 629                         if (!skb) {
 630                                 err = -ENOMEM;
 631                                 break;
 632                         }
 633
 634                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 635                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 636                 }
 637
 638                 len = min_t(uint, hci_skb_expect(skb), count);
 639                 skb_put_data(skb, buffer, len);
 640
 641                 count -= len;
 642                 buffer += len;
 643                 hci_skb_expect(skb) -= len;
 644
 645                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 646                         /* Complete event header */
 647                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 648
 649                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 650                                 kfree_skb(skb);
 651                                 skb = NULL;
 652
 653                                 err = -EILSEQ;
 654                                 break;
 655                         }
 656                 }
 657
 658                 if (!hci_skb_expect(skb)) {
 659                         /* Complete frame */
 660                         data->recv_event(data->hdev, skb);
 661                         skb = NULL;
 662                 }
 663         }
 664
 665         data->evt_skb = skb;
 666         spin_unlock_irqrestore(&data->rxlock, flags);
 667
 668         return err;
 669 }
 670
 671 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 672 {
 673         struct sk_buff *skb;
 674         unsigned long flags;
 675         int err = 0;
 676
 677         spin_lock_irqsave(&data->rxlock, flags);
 678         skb = data->acl_skb;
 679
 680         while (count) {
 681                 int len;
 682
 683                 if (!skb) {
 684                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 685                         if (!skb) {
 686                                 err = -ENOMEM;
 687                                 break;
 688                         }
 689
 690                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 691                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 692                 }
 693
 694                 len = min_t(uint, hci_skb_expect(skb), count);
 695                 skb_put_data(skb, buffer, len);
 696
 697                 count -= len;
 698                 buffer += len;
 699                 hci_skb_expect(skb) -= len;
 700
 701                 if (skb->len == HCI_ACL_HDR_SIZE) {
 702                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 703
 704                         /* Complete ACL header */
 705                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 706
 707                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 708                                 kfree_skb(skb);
 709                                 skb = NULL;
 710
 711                                 err = -EILSEQ;
 712                                 break;
 713                         }
 714                 }
 715
 716                 if (!hci_skb_expect(skb)) {
 717                         /* Complete frame */
 718                         hci_recv_frame(data->hdev, skb);
 719                         skb = NULL;
 720                 }
 721         }
 722
 723         data->acl_skb = skb;
 724         spin_unlock_irqrestore(&data->rxlock, flags);
 725
 726         return err;
 727 }
 728
 729 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 730 {
 731         struct sk_buff *skb;
 732         unsigned long flags;
 733         int err = 0;
 734
 735         spin_lock_irqsave(&data->rxlock, flags);
 736         skb = data->sco_skb;
 737
 738         while (count) {
 739                 int len;
 740
 741                 if (!skb) {
 742                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 743                         if (!skb) {
 744                                 err = -ENOMEM;
 745                                 break;
 746                         }
 747
 748                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 749                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 750                 }
 751
 752                 len = min_t(uint, hci_skb_expect(skb), count);
 753                 skb_put_data(skb, buffer, len);
 754
 755                 count -= len;
 756                 buffer += len;
 757                 hci_skb_expect(skb) -= len;
 758
 759                 if (skb->len == HCI_SCO_HDR_SIZE) {
 760                         /* Complete SCO header */
 761                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 762
 763                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 764                                 kfree_skb(skb);
 765                                 skb = NULL;
 766
 767                                 err = -EILSEQ;
 768                                 break;
 769                         }
 770                 }
 771
 772                 if (!hci_skb_expect(skb)) {
 773                         /* Complete frame */
 774                         hci_recv_frame(data->hdev, skb);
 775                         skb = NULL;
 776                 }
 777         }
 778
 779         data->sco_skb = skb;
 780         spin_unlock_irqrestore(&data->rxlock, flags);
 781
 782         return err;
 783 }
 784
 785 static void btusb_intr_complete(struct urb *urb)
 786 {
 787         struct hci_dev *hdev = urb->context;
 788         struct btusb_data *data = hci_get_drvdata(hdev);
 789         int err;
 790
 791         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 792                urb->actual_length);
 793
 794         if (!test_bit(HCI_RUNNING, &hdev->flags))
 795                 return;
 796
 797         if (urb->status == 0) {
 798                 hdev->stat.byte_rx += urb->actual_length;
 799
 800                 if (btusb_recv_intr(data, urb->transfer_buffer,
 801                                     urb->actual_length) < 0) {
 802                         bt_dev_err(hdev, "corrupted event packet");
 803                         hdev->stat.err_rx++;
 804                 }
 805         } else if (urb->status == -ENOENT) {
 806                 /* Avoid suspend failed when usb_kill_urb */
 807                 return;
 808         }
 809
 810         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 811                 return;
 812
 813         usb_mark_last_busy(data->udev);
 814         usb_anchor_urb(urb, &data->intr_anchor);
 815
 816         err = usb_submit_urb(urb, GFP_ATOMIC);
 817         if (err < 0) {
 818                 /* -EPERM: urb is being killed;
 819                  * -ENODEV: device got disconnected
 820                  */
 821                 if (err != -EPERM && err != -ENODEV)
 822                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 823                                    urb, -err);
 824                 usb_unanchor_urb(urb);
 825         }
 826 }
 827
 828 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 829 {
 830         struct btusb_data *data = hci_get_drvdata(hdev);
 831         struct urb *urb;
 832         unsigned char *buf;
 833         unsigned int pipe;
 834         int err, size;
 835
 836         BT_DBG("%s", hdev->name);
 837
 838         if (!data->intr_ep)
 839                 return -ENODEV;
 840
 841         urb = usb_alloc_urb(0, mem_flags);
 842         if (!urb)
 843                 return -ENOMEM;
 844
 845         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 846
 847         buf = kmalloc(size, mem_flags);
 848         if (!buf) {
 849                 usb_free_urb(urb);
 850                 return -ENOMEM;
 851         }
 852
 853         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 854
 855         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 856                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 857
 858         urb->transfer_flags |= URB_FREE_BUFFER;
 859
 860         usb_anchor_urb(urb, &data->intr_anchor);
 861
 862         err = usb_submit_urb(urb, mem_flags);
 863         if (err < 0) {
 864                 if (err != -EPERM && err != -ENODEV)
 865                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 866                                    urb, -err);
 867                 usb_unanchor_urb(urb);
 868         }
 869
 870         usb_free_urb(urb);
 871
 872         return err;
 873 }
 874
 875 static void btusb_bulk_complete(struct urb *urb)
 876 {
 877         struct hci_dev *hdev = urb->context;
 878         struct btusb_data *data = hci_get_drvdata(hdev);
 879         int err;
 880
 881         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 882                urb->actual_length);
 883
 884         if (!test_bit(HCI_RUNNING, &hdev->flags))
 885                 return;
 886
 887         if (urb->status == 0) {
 888                 hdev->stat.byte_rx += urb->actual_length;
 889
 890                 if (data->recv_bulk(data, urb->transfer_buffer,
 891                                     urb->actual_length) < 0) {
 892                         bt_dev_err(hdev, "corrupted ACL packet");
 893                         hdev->stat.err_rx++;
 894                 }
 895         } else if (urb->status == -ENOENT) {
 896                 /* Avoid suspend failed when usb_kill_urb */
 897                 return;
 898         }
 899
 900         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 901                 return;
 902
 903         usb_anchor_urb(urb, &data->bulk_anchor);
 904         usb_mark_last_busy(data->udev);
 905
 906         err = usb_submit_urb(urb, GFP_ATOMIC);
 907         if (err < 0) {
 908                 /* -EPERM: urb is being killed;
 909                  * -ENODEV: device got disconnected
 910                  */
 911                 if (err != -EPERM && err != -ENODEV)
 912                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 913                                    urb, -err);
 914                 usb_unanchor_urb(urb);
 915         }
 916 }
 917
 918 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 919 {
 920         struct btusb_data *data = hci_get_drvdata(hdev);
 921         struct urb *urb;
 922         unsigned char *buf;
 923         unsigned int pipe;
 924         int err, size = HCI_MAX_FRAME_SIZE;
 925
 926         BT_DBG("%s", hdev->name);
 927
 928         if (!data->bulk_rx_ep)
 929                 return -ENODEV;
 930
 931         urb = usb_alloc_urb(0, mem_flags);
 932         if (!urb)
 933                 return -ENOMEM;
 934
 935         buf = kmalloc(size, mem_flags);
 936         if (!buf) {
 937                 usb_free_urb(urb);
 938                 return -ENOMEM;
 939         }
 940
 941         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 942
 943         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 944                           btusb_bulk_complete, hdev);
 945
 946         urb->transfer_flags |= URB_FREE_BUFFER;
 947
 948         usb_mark_last_busy(data->udev);
 949         usb_anchor_urb(urb, &data->bulk_anchor);
 950
 951         err = usb_submit_urb(urb, mem_flags);
 952         if (err < 0) {
 953                 if (err != -EPERM && err != -ENODEV)
 954                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 955                                    urb, -err);
 956                 usb_unanchor_urb(urb);
 957         }
 958
 959         usb_free_urb(urb);
 960
 961         return err;
 962 }
 963
 964 static void btusb_isoc_complete(struct urb *urb)
 965 {
 966         struct hci_dev *hdev = urb->context;
 967         struct btusb_data *data = hci_get_drvdata(hdev);
 968         int i, err;
 969
 970         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 971                urb->actual_length);
 972
 973         if (!test_bit(HCI_RUNNING, &hdev->flags))
 974                 return;
 975
 976         if (urb->status == 0) {
 977                 for (i = 0; i < urb->number_of_packets; i++) {
 978                         unsigned int offset = urb->iso_frame_desc[i].offset;
 979                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 980
 981                         if (urb->iso_frame_desc[i].status)
 982                                 continue;
 983
 984                         hdev->stat.byte_rx += length;
 985
 986                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 987                                             length) < 0) {
 988                                 bt_dev_err(hdev, "corrupted SCO packet");
 989                                 hdev->stat.err_rx++;
 990                         }
 991                 }
 992         } else if (urb->status == -ENOENT) {
 993                 /* Avoid suspend failed when usb_kill_urb */
 994                 return;
 995         }
 996
 997         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 998                 return;
 999
1000         usb_anchor_urb(urb, &data->isoc_anchor);
1001
1002         err = usb_submit_urb(urb, GFP_ATOMIC);
1003         if (err < 0) {
1004                 /* -EPERM: urb is being killed;
1005                  * -ENODEV: device got disconnected
1006                  */
1007                 if (err != -EPERM && err != -ENODEV)
1008                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1009                                    urb, -err);
1010                 usb_unanchor_urb(urb);
1011         }
1012 }
1013
1014 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1015                                                int mtu, struct btusb_data *data)
1016 {
1017         int i, offset = 0;
1018         unsigned int interval;
1019
1020         BT_DBG("len %d mtu %d", len, mtu);
1021
1022         /* For mSBC ALT 6 setting the host will send the packet at continuous
1023          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1024          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1025          * To maintain the rate we send 63bytes of usb packets alternatively for
1026          * 7ms and 8ms to maintain the rate as 7.5ms.
1027          */
1028         if (data->usb_alt6_packet_flow) {
1029                 interval = 7;
1030                 data->usb_alt6_packet_flow = false;
1031         } else {
1032                 interval = 6;
1033                 data->usb_alt6_packet_flow = true;
1034         }
1035
1036         for (i = 0; i < interval; i++) {
1037                 urb->iso_frame_desc[i].offset = offset;
1038                 urb->iso_frame_desc[i].length = offset;
1039         }
1040
1041         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1042                 urb->iso_frame_desc[i].offset = offset;
1043                 urb->iso_frame_desc[i].length = len;
1044                 i++;
1045         }
1046
1047         urb->number_of_packets = i;
1048 }
1049
1050 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1051 {
1052         int i, offset = 0;
1053
1054         BT_DBG("len %d mtu %d", len, mtu);
1055
1056         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1057                                         i++, offset += mtu, len -= mtu) {
1058                 urb->iso_frame_desc[i].offset = offset;
1059                 urb->iso_frame_desc[i].length = mtu;
1060         }
1061
1062         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1063                 urb->iso_frame_desc[i].offset = offset;
1064                 urb->iso_frame_desc[i].length = len;
1065                 i++;
1066         }
1067
1068         urb->number_of_packets = i;
1069 }
1070
1071 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1072 {
1073         struct btusb_data *data = hci_get_drvdata(hdev);
1074         struct urb *urb;
1075         unsigned char *buf;
1076         unsigned int pipe;
1077         int err, size;
1078
1079         BT_DBG("%s", hdev->name);
1080
1081         if (!data->isoc_rx_ep)
1082                 return -ENODEV;
1083
1084         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1085         if (!urb)
1086                 return -ENOMEM;
1087
1088         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1089                                                 BTUSB_MAX_ISOC_FRAMES;
1090
1091         buf = kmalloc(size, mem_flags);
1092         if (!buf) {
1093                 usb_free_urb(urb);
1094                 return -ENOMEM;
1095         }
1096
1097         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1098
1099         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1100                          hdev, data->isoc_rx_ep->bInterval);
1101
1102         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1103
1104         __fill_isoc_descriptor(urb, size,
1105                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1106
1107         usb_anchor_urb(urb, &data->isoc_anchor);
1108
1109         err = usb_submit_urb(urb, mem_flags);
1110         if (err < 0) {
1111                 if (err != -EPERM && err != -ENODEV)
1112                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1113                                    urb, -err);
1114                 usb_unanchor_urb(urb);
1115         }
1116
1117         usb_free_urb(urb);
1118
1119         return err;
1120 }
1121
1122 static void btusb_diag_complete(struct urb *urb)
1123 {
1124         struct hci_dev *hdev = urb->context;
1125         struct btusb_data *data = hci_get_drvdata(hdev);
1126         int err;
1127
1128         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1129                urb->actual_length);
1130
1131         if (urb->status == 0) {
1132                 struct sk_buff *skb;
1133
1134                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1135                 if (skb) {
1136                         skb_put_data(skb, urb->transfer_buffer,
1137                                      urb->actual_length);
1138                         hci_recv_diag(hdev, skb);
1139                 }
1140         } else if (urb->status == -ENOENT) {
1141                 /* Avoid suspend failed when usb_kill_urb */
1142                 return;
1143         }
1144
1145         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1146                 return;
1147
1148         usb_anchor_urb(urb, &data->diag_anchor);
1149         usb_mark_last_busy(data->udev);
1150
1151         err = usb_submit_urb(urb, GFP_ATOMIC);
1152         if (err < 0) {
1153                 /* -EPERM: urb is being killed;
1154                  * -ENODEV: device got disconnected
1155                  */
1156                 if (err != -EPERM && err != -ENODEV)
1157                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1158                                    urb, -err);
1159                 usb_unanchor_urb(urb);
1160         }
1161 }
1162
1163 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1164 {
1165         struct btusb_data *data = hci_get_drvdata(hdev);
1166         struct urb *urb;
1167         unsigned char *buf;
1168         unsigned int pipe;
1169         int err, size = HCI_MAX_FRAME_SIZE;
1170
1171         BT_DBG("%s", hdev->name);
1172
1173         if (!data->diag_rx_ep)
1174                 return -ENODEV;
1175
1176         urb = usb_alloc_urb(0, mem_flags);
1177         if (!urb)
1178                 return -ENOMEM;
1179
1180         buf = kmalloc(size, mem_flags);
1181         if (!buf) {
1182                 usb_free_urb(urb);
1183                 return -ENOMEM;
1184         }
1185
1186         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1187
1188         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1189                           btusb_diag_complete, hdev);
1190
1191         urb->transfer_flags |= URB_FREE_BUFFER;
1192
1193         usb_mark_last_busy(data->udev);
1194         usb_anchor_urb(urb, &data->diag_anchor);
1195
1196         err = usb_submit_urb(urb, mem_flags);
1197         if (err < 0) {
1198                 if (err != -EPERM && err != -ENODEV)
1199                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1200                                    urb, -err);
1201                 usb_unanchor_urb(urb);
1202         }
1203
1204         usb_free_urb(urb);
1205
1206         return err;
1207 }
1208
1209 static void btusb_tx_complete(struct urb *urb)
1210 {
1211         struct sk_buff *skb = urb->context;
1212         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1213         struct btusb_data *data = hci_get_drvdata(hdev);
1214         unsigned long flags;
1215
1216         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1217                urb->actual_length);
1218
1219         if (!test_bit(HCI_RUNNING, &hdev->flags))
1220                 goto done;
1221
1222         if (!urb->status)
1223                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1224         else
1225                 hdev->stat.err_tx++;
1226
1227 done:
1228         spin_lock_irqsave(&data->txlock, flags);
1229         data->tx_in_flight--;
1230         spin_unlock_irqrestore(&data->txlock, flags);
1231
1232         kfree(urb->setup_packet);
1233
1234         kfree_skb(skb);
1235 }
1236
1237 static void btusb_isoc_tx_complete(struct urb *urb)
1238 {
1239         struct sk_buff *skb = urb->context;
1240         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1241
1242         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1243                urb->actual_length);
1244
1245         if (!test_bit(HCI_RUNNING, &hdev->flags))
1246                 goto done;
1247
1248         if (!urb->status)
1249                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1250         else
1251                 hdev->stat.err_tx++;
1252
1253 done:
1254         kfree(urb->setup_packet);
1255
1256         kfree_skb(skb);
1257 }
1258
1259 static int btusb_open(struct hci_dev *hdev)
1260 {
1261         struct btusb_data *data = hci_get_drvdata(hdev);
1262         int err;
1263
1264         BT_DBG("%s", hdev->name);
1265
1266         err = usb_autopm_get_interface(data->intf);
1267         if (err < 0)
1268                 return err;
1269
1270         /* Patching USB firmware files prior to starting any URBs of HCI path
1271          * It is more safe to use USB bulk channel for downloading USB patch
1272          */
1273         if (data->setup_on_usb) {
1274                 err = data->setup_on_usb(hdev);
1275                 if (err < 0)
1276                         goto setup_fail;
1277         }
1278
1279         data->intf->needs_remote_wakeup = 1;
1280
1281         /* Disable device remote wakeup when host is suspended
1282          * For Realtek chips, global suspend without
1283          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1284          */
1285         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1286                 device_wakeup_disable(&data->udev->dev);
1287
1288         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1289                 goto done;
1290
1291         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1292         if (err < 0)
1293                 goto failed;
1294
1295         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1296         if (err < 0) {
1297                 usb_kill_anchored_urbs(&data->intr_anchor);
1298                 goto failed;
1299         }
1300
1301         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1302         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1303
1304         if (data->diag) {
1305                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1306                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1307         }
1308
1309 done:
1310         usb_autopm_put_interface(data->intf);
1311         return 0;
1312
1313 failed:
1314         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1315 setup_fail:
1316         usb_autopm_put_interface(data->intf);
1317         return err;
1318 }
1319
1320 static void btusb_stop_traffic(struct btusb_data *data)
1321 {
1322         usb_kill_anchored_urbs(&data->intr_anchor);
1323         usb_kill_anchored_urbs(&data->bulk_anchor);
1324         usb_kill_anchored_urbs(&data->isoc_anchor);
1325         usb_kill_anchored_urbs(&data->diag_anchor);
1326         usb_kill_anchored_urbs(&data->ctrl_anchor);
1327 }
1328
1329 static int btusb_close(struct hci_dev *hdev)
1330 {
1331         struct btusb_data *data = hci_get_drvdata(hdev);
1332         int err;
1333
1334         BT_DBG("%s", hdev->name);
1335
1336         cancel_work_sync(&data->work);
1337         cancel_work_sync(&data->waker);
1338
1339         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1340         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1341         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1342         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1343
1344         btusb_stop_traffic(data);
1345         btusb_free_frags(data);
1346
1347         err = usb_autopm_get_interface(data->intf);
1348         if (err < 0)
1349                 goto failed;
1350
1351         data->intf->needs_remote_wakeup = 0;
1352
1353         /* Enable remote wake up for auto-suspend */
1354         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1355                 data->intf->needs_remote_wakeup = 1;
1356
1357         usb_autopm_put_interface(data->intf);
1358
1359 failed:
1360         usb_scuttle_anchored_urbs(&data->deferred);
1361         return 0;
1362 }
1363
1364 static int btusb_flush(struct hci_dev *hdev)
1365 {
1366         struct btusb_data *data = hci_get_drvdata(hdev);
1367
1368         BT_DBG("%s", hdev->name);
1369
1370         usb_kill_anchored_urbs(&data->tx_anchor);
1371         btusb_free_frags(data);
1372
1373         return 0;
1374 }
1375
1376 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1377 {
1378         struct btusb_data *data = hci_get_drvdata(hdev);
1379         struct usb_ctrlrequest *dr;
1380         struct urb *urb;
1381         unsigned int pipe;
1382
1383         urb = usb_alloc_urb(0, GFP_KERNEL);
1384         if (!urb)
1385                 return ERR_PTR(-ENOMEM);
1386
1387         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1388         if (!dr) {
1389                 usb_free_urb(urb);
1390                 return ERR_PTR(-ENOMEM);
1391         }
1392
1393         dr->bRequestType = data->cmdreq_type;
1394         dr->bRequest     = data->cmdreq;
1395         dr->wIndex       = 0;
1396         dr->wValue       = 0;
1397         dr->wLength      = __cpu_to_le16(skb->len);
1398
1399         pipe = usb_sndctrlpipe(data->udev, 0x00);
1400
1401         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1402                              skb->data, skb->len, btusb_tx_complete, skb);
1403
1404         skb->dev = (void *)hdev;
1405
1406         return urb;
1407 }
1408
1409 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1410 {
1411         struct btusb_data *data = hci_get_drvdata(hdev);
1412         struct urb *urb;
1413         unsigned int pipe;
1414
1415         if (!data->bulk_tx_ep)
1416                 return ERR_PTR(-ENODEV);
1417
1418         urb = usb_alloc_urb(0, GFP_KERNEL);
1419         if (!urb)
1420                 return ERR_PTR(-ENOMEM);
1421
1422         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1423
1424         usb_fill_bulk_urb(urb, data->udev, pipe,
1425                           skb->data, skb->len, btusb_tx_complete, skb);
1426
1427         skb->dev = (void *)hdev;
1428
1429         return urb;
1430 }
1431
1432 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1433 {
1434         struct btusb_data *data = hci_get_drvdata(hdev);
1435         struct urb *urb;
1436         unsigned int pipe;
1437
1438         if (!data->isoc_tx_ep)
1439                 return ERR_PTR(-ENODEV);
1440
1441         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1442         if (!urb)
1443                 return ERR_PTR(-ENOMEM);
1444
1445         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1446
1447         usb_fill_int_urb(urb, data->udev, pipe,
1448                          skb->data, skb->len, btusb_isoc_tx_complete,
1449                          skb, data->isoc_tx_ep->bInterval);
1450
1451         urb->transfer_flags  = URB_ISO_ASAP;
1452
1453         if (data->isoc_altsetting == 6)
1454                 __fill_isoc_descriptor_msbc(urb, skb->len,
1455                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1456                                             data);
1457         else
1458                 __fill_isoc_descriptor(urb, skb->len,
1459                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1460         skb->dev = (void *)hdev;
1461
1462         return urb;
1463 }
1464
1465 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1466 {
1467         struct btusb_data *data = hci_get_drvdata(hdev);
1468         int err;
1469
1470         usb_anchor_urb(urb, &data->tx_anchor);
1471
1472         err = usb_submit_urb(urb, GFP_KERNEL);
1473         if (err < 0) {
1474                 if (err != -EPERM && err != -ENODEV)
1475                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1476                                    urb, -err);
1477                 kfree(urb->setup_packet);
1478                 usb_unanchor_urb(urb);
1479         } else {
1480                 usb_mark_last_busy(data->udev);
1481         }
1482
1483         usb_free_urb(urb);
1484         return err;
1485 }
1486
1487 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1488 {
1489         struct btusb_data *data = hci_get_drvdata(hdev);
1490         unsigned long flags;
1491         bool suspending;
1492
1493         spin_lock_irqsave(&data->txlock, flags);
1494         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1495         if (!suspending)
1496                 data->tx_in_flight++;
1497         spin_unlock_irqrestore(&data->txlock, flags);
1498
1499         if (!suspending)
1500                 return submit_tx_urb(hdev, urb);
1501
1502         usb_anchor_urb(urb, &data->deferred);
1503         schedule_work(&data->waker);
1504
1505         usb_free_urb(urb);
1506         return 0;
1507 }
1508
1509 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1510 {
1511         struct urb *urb;
1512
1513         BT_DBG("%s", hdev->name);
1514
1515         switch (hci_skb_pkt_type(skb)) {
1516         case HCI_COMMAND_PKT:
1517                 urb = alloc_ctrl_urb(hdev, skb);
1518                 if (IS_ERR(urb))
1519                         return PTR_ERR(urb);
1520
1521                 hdev->stat.cmd_tx++;
1522                 return submit_or_queue_tx_urb(hdev, urb);
1523
1524         case HCI_ACLDATA_PKT:
1525                 urb = alloc_bulk_urb(hdev, skb);
1526                 if (IS_ERR(urb))
1527                         return PTR_ERR(urb);
1528
1529                 hdev->stat.acl_tx++;
1530                 return submit_or_queue_tx_urb(hdev, urb);
1531
1532         case HCI_SCODATA_PKT:
1533                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1534                         return -ENODEV;
1535
1536                 urb = alloc_isoc_urb(hdev, skb);
1537                 if (IS_ERR(urb))
1538                         return PTR_ERR(urb);
1539
1540                 hdev->stat.sco_tx++;
1541                 return submit_tx_urb(hdev, urb);
1542         }
1543
1544         return -EILSEQ;
1545 }
1546
1547 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1548 {
1549         struct btusb_data *data = hci_get_drvdata(hdev);
1550
1551         BT_DBG("%s evt %d", hdev->name, evt);
1552
1553         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1554                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1555                 data->air_mode = evt;
1556                 schedule_work(&data->work);
1557         }
1558 }
1559
1560 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1561 {
1562         struct btusb_data *data = hci_get_drvdata(hdev);
1563         struct usb_interface *intf = data->isoc;
1564         struct usb_endpoint_descriptor *ep_desc;
1565         int i, err;
1566
1567         if (!data->isoc)
1568                 return -ENODEV;
1569
1570         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1571         if (err < 0) {
1572                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1573                 return err;
1574         }
1575
1576         data->isoc_altsetting = altsetting;
1577
1578         data->isoc_tx_ep = NULL;
1579         data->isoc_rx_ep = NULL;
1580
1581         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1582                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1583
1584                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1585                         data->isoc_tx_ep = ep_desc;
1586                         continue;
1587                 }
1588
1589                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1590                         data->isoc_rx_ep = ep_desc;
1591                         continue;
1592                 }
1593         }
1594
1595         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1596                 bt_dev_err(hdev, "invalid SCO descriptors");
1597                 return -ENODEV;
1598         }
1599
1600         return 0;
1601 }
1602
1603 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1604 {
1605         struct btusb_data *data = hci_get_drvdata(hdev);
1606         int err;
1607
1608         if (data->isoc_altsetting != new_alts) {
1609                 unsigned long flags;
1610
1611                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1612                 usb_kill_anchored_urbs(&data->isoc_anchor);
1613
1614                 /* When isochronous alternate setting needs to be
1615                  * changed, because SCO connection has been added
1616                  * or removed, a packet fragment may be left in the
1617                  * reassembling state. This could lead to wrongly
1618                  * assembled fragments.
1619                  *
1620                  * Clear outstanding fragment when selecting a new
1621                  * alternate setting.
1622                  */
1623                 spin_lock_irqsave(&data->rxlock, flags);
1624                 kfree_skb(data->sco_skb);
1625                 data->sco_skb = NULL;
1626                 spin_unlock_irqrestore(&data->rxlock, flags);
1627
1628                 err = __set_isoc_interface(hdev, new_alts);
1629                 if (err < 0)
1630                         return err;
1631         }
1632
1633         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1634                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1635                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1636                 else
1637                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1638         }
1639
1640         return 0;
1641 }
1642
1643 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1644                                                         int alt)
1645 {
1646         struct usb_interface *intf = data->isoc;
1647         int i;
1648
1649         BT_DBG("Looking for Alt no :%d", alt);
1650
1651         if (!intf)
1652                 return NULL;
1653
1654         for (i = 0; i < intf->num_altsetting; i++) {
1655                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1656                         return &intf->altsetting[i];
1657         }
1658
1659         return NULL;
1660 }
1661
1662 static void btusb_work(struct work_struct *work)
1663 {
1664         struct btusb_data *data = container_of(work, struct btusb_data, work);
1665         struct hci_dev *hdev = data->hdev;
1666         int new_alts = 0;
1667         int err;
1668
1669         if (data->sco_num > 0) {
1670                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1671                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1672                         if (err < 0) {
1673                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1674                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1675                                 return;
1676                         }
1677
1678                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1679                 }
1680
1681                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1682                         if (hdev->voice_setting & 0x0020) {
1683                                 static const int alts[3] = { 2, 4, 5 };
1684
1685                                 new_alts = alts[data->sco_num - 1];
1686                         } else {
1687                                 new_alts = data->sco_num;
1688                         }
1689                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1690                         /* Check if Alt 6 is supported for Transparent audio */
1691                         if (btusb_find_altsetting(data, 6)) {
1692                                 data->usb_alt6_packet_flow = true;
1693                                 new_alts = 6;
1694                         } else if (test_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags)) {
1695                                 new_alts = 1;
1696                         } else {
1697                                 bt_dev_err(hdev, "Device does not support ALT setting 6");
1698                         }
1699                 }
1700
1701                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1702                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1703         } else {
1704                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1705                 usb_kill_anchored_urbs(&data->isoc_anchor);
1706
1707                 __set_isoc_interface(hdev, 0);
1708                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1709                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1710         }
1711 }
1712
1713 static void btusb_waker(struct work_struct *work)
1714 {
1715         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1716         int err;
1717
1718         err = usb_autopm_get_interface(data->intf);
1719         if (err < 0)
1720                 return;
1721
1722         usb_autopm_put_interface(data->intf);
1723 }
1724
1725 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1726 {
1727         struct sk_buff *skb;
1728         u8 val = 0x00;
1729
1730         BT_DBG("%s", hdev->name);
1731
1732         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1733         if (IS_ERR(skb))
1734                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1735         else
1736                 kfree_skb(skb);
1737
1738         return 0;
1739 }
1740
1741 static int btusb_setup_csr(struct hci_dev *hdev)
1742 {
1743         struct hci_rp_read_local_version *rp;
1744         struct sk_buff *skb;
1745         bool is_fake = false;
1746
1747         BT_DBG("%s", hdev->name);
1748
1749         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1750                              HCI_INIT_TIMEOUT);
1751         if (IS_ERR(skb)) {
1752                 int err = PTR_ERR(skb);
1753                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1754                 return err;
1755         }
1756
1757         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1758                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1759                 kfree_skb(skb);
1760                 return -EIO;
1761         }
1762
1763         rp = (struct hci_rp_read_local_version *)skb->data;
1764
1765         /* Detect a wide host of Chinese controllers that aren't CSR.
1766          *
1767          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1768          *
1769          * The main thing they have in common is that these are really popular low-cost
1770          * options that support newer Bluetooth versions but rely on heavy VID/PID
1771          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1772          *
1773          * We detect actual CSR devices by checking that the HCI manufacturer code
1774          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1775          * HCI rev values always match. As they both store the firmware number.
1776          */
1777         if (le16_to_cpu(rp->manufacturer) != 10 ||
1778             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1779                 is_fake = true;
1780
1781         /* Known legit CSR firmware build numbers and their supported BT versions:
1782          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1783          * - 1.2 (0x2) ->                 0x04d9, 0x0529
1784          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
1785          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1786          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
1787          *
1788          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1789          *      support BT 1.1 only; so it's a dead giveaway when some
1790          *      third-party BT 4.0 dongle reuses it.
1791          */
1792         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1793                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1794                 is_fake = true;
1795
1796         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1797                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1798                 is_fake = true;
1799
1800         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1801                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1802                 is_fake = true;
1803
1804         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1805                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1806                 is_fake = true;
1807
1808         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1809                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1810                 is_fake = true;
1811
1812         if (is_fake) {
1813                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1814
1815                 /* Generally these clones have big discrepancies between
1816                  * advertised features and what's actually supported.
1817                  * Probably will need to be expanded in the future;
1818                  * without these the controller will lock up.
1819                  */
1820                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1821                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1822
1823                 /* Clear the reset quirk since this is not an actual
1824                  * early Bluetooth 1.1 device from CSR.
1825                  */
1826                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1827                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1828         }
1829
1830         kfree_skb(skb);
1831
1832         return 0;
1833 }
1834
1835 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1836                                                        struct intel_version *ver)
1837 {
1838         const struct firmware *fw;
1839         char fwname[64];
1840         int ret;
1841
1842         snprintf(fwname, sizeof(fwname),
1843                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1844                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1845                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1846                  ver->fw_build_ww, ver->fw_build_yy);
1847
1848         ret = request_firmware(&fw, fwname, &hdev->dev);
1849         if (ret < 0) {
1850                 if (ret == -EINVAL) {
1851                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1852                                    ret);
1853                         return NULL;
1854                 }
1855
1856                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1857                            fwname, ret);
1858
1859                 /* If the correct firmware patch file is not found, use the
1860                  * default firmware patch file instead
1861                  */
1862                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1863                          ver->hw_platform, ver->hw_variant);
1864                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1865                         bt_dev_err(hdev, "failed to open default fw file: %s",
1866                                    fwname);
1867                         return NULL;
1868                 }
1869         }
1870
1871         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1872
1873         return fw;
1874 }
1875
1876 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1877                                       const struct firmware *fw,
1878                                       const u8 **fw_ptr, int *disable_patch)
1879 {
1880         struct sk_buff *skb;
1881         struct hci_command_hdr *cmd;
1882         const u8 *cmd_param;
1883         struct hci_event_hdr *evt = NULL;
1884         const u8 *evt_param = NULL;
1885         int remain = fw->size - (*fw_ptr - fw->data);
1886
1887         /* The first byte indicates the types of the patch command or event.
1888          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1889          * in the current firmware buffer doesn't start with 0x01 or
1890          * the size of remain buffer is smaller than HCI command header,
1891          * the firmware file is corrupted and it should stop the patching
1892          * process.
1893          */
1894         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1895                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1896                 return -EINVAL;
1897         }
1898         (*fw_ptr)++;
1899         remain--;
1900
1901         cmd = (struct hci_command_hdr *)(*fw_ptr);
1902         *fw_ptr += sizeof(*cmd);
1903         remain -= sizeof(*cmd);
1904
1905         /* Ensure that the remain firmware data is long enough than the length
1906          * of command parameter. If not, the firmware file is corrupted.
1907          */
1908         if (remain < cmd->plen) {
1909                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1910                 return -EFAULT;
1911         }
1912
1913         /* If there is a command that loads a patch in the firmware
1914          * file, then enable the patch upon success, otherwise just
1915          * disable the manufacturer mode, for example patch activation
1916          * is not required when the default firmware patch file is used
1917          * because there are no patch data to load.
1918          */
1919         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1920                 *disable_patch = 0;
1921
1922         cmd_param = *fw_ptr;
1923         *fw_ptr += cmd->plen;
1924         remain -= cmd->plen;
1925
1926         /* This reads the expected events when the above command is sent to the
1927          * device. Some vendor commands expects more than one events, for
1928          * example command status event followed by vendor specific event.
1929          * For this case, it only keeps the last expected event. so the command
1930          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1931          * last expected event.
1932          */
1933         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1934                 (*fw_ptr)++;
1935                 remain--;
1936
1937                 evt = (struct hci_event_hdr *)(*fw_ptr);
1938                 *fw_ptr += sizeof(*evt);
1939                 remain -= sizeof(*evt);
1940
1941                 if (remain < evt->plen) {
1942                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1943                         return -EFAULT;
1944                 }
1945
1946                 evt_param = *fw_ptr;
1947                 *fw_ptr += evt->plen;
1948                 remain -= evt->plen;
1949         }
1950
1951         /* Every HCI commands in the firmware file has its correspond event.
1952          * If event is not found or remain is smaller than zero, the firmware
1953          * file is corrupted.
1954          */
1955         if (!evt || !evt_param || remain < 0) {
1956                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1957                 return -EFAULT;
1958         }
1959
1960         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1961                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1962         if (IS_ERR(skb)) {
1963                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1964                            cmd->opcode, PTR_ERR(skb));
1965                 return PTR_ERR(skb);
1966         }
1967
1968         /* It ensures that the returned event matches the event data read from
1969          * the firmware file. At fist, it checks the length and then
1970          * the contents of the event.
1971          */
1972         if (skb->len != evt->plen) {
1973                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1974                            le16_to_cpu(cmd->opcode));
1975                 kfree_skb(skb);
1976                 return -EFAULT;
1977         }
1978
1979         if (memcmp(skb->data, evt_param, evt->plen)) {
1980                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1981                            le16_to_cpu(cmd->opcode));
1982                 kfree_skb(skb);
1983                 return -EFAULT;
1984         }
1985         kfree_skb(skb);
1986
1987         return 0;
1988 }
1989
1990 static int btusb_setup_intel(struct hci_dev *hdev)
1991 {
1992         struct sk_buff *skb;
1993         const struct firmware *fw;
1994         const u8 *fw_ptr;
1995         int disable_patch, err;
1996         struct intel_version ver;
1997
1998         BT_DBG("%s", hdev->name);
1999
2000         /* The controller has a bug with the first HCI command sent to it
2001          * returning number of completed commands as zero. This would stall the
2002          * command processing in the Bluetooth core.
2003          *
2004          * As a workaround, send HCI Reset command first which will reset the
2005          * number of completed commands and allow normal command processing
2006          * from now on.
2007          */
2008         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2009         if (IS_ERR(skb)) {
2010                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2011                            PTR_ERR(skb));
2012                 return PTR_ERR(skb);
2013         }
2014         kfree_skb(skb);
2015
2016         /* Read Intel specific controller version first to allow selection of
2017          * which firmware file to load.
2018          *
2019          * The returned information are hardware variant and revision plus
2020          * firmware variant, revision and build number.
2021          */
2022         err = btintel_read_version(hdev, &ver);
2023         if (err)
2024                 return err;
2025
2026         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2027                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
2028                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
2029                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2030
2031         /* fw_patch_num indicates the version of patch the device currently
2032          * have. If there is no patch data in the device, it is always 0x00.
2033          * So, if it is other than 0x00, no need to patch the device again.
2034          */
2035         if (ver.fw_patch_num) {
2036                 bt_dev_info(hdev, "Intel device is already patched. "
2037                             "patch num: %02x", ver.fw_patch_num);
2038                 goto complete;
2039         }
2040
2041         /* Opens the firmware patch file based on the firmware version read
2042          * from the controller. If it fails to open the matching firmware
2043          * patch file, it tries to open the default firmware patch file.
2044          * If no patch file is found, allow the device to operate without
2045          * a patch.
2046          */
2047         fw = btusb_setup_intel_get_fw(hdev, &ver);
2048         if (!fw)
2049                 goto complete;
2050         fw_ptr = fw->data;
2051
2052         /* Enable the manufacturer mode of the controller.
2053          * Only while this mode is enabled, the driver can download the
2054          * firmware patch data and configuration parameters.
2055          */
2056         err = btintel_enter_mfg(hdev);
2057         if (err) {
2058                 release_firmware(fw);
2059                 return err;
2060         }
2061
2062         disable_patch = 1;
2063
2064         /* The firmware data file consists of list of Intel specific HCI
2065          * commands and its expected events. The first byte indicates the
2066          * type of the message, either HCI command or HCI event.
2067          *
2068          * It reads the command and its expected event from the firmware file,
2069          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2070          * the returned event is compared with the event read from the firmware
2071          * file and it will continue until all the messages are downloaded to
2072          * the controller.
2073          *
2074          * Once the firmware patching is completed successfully,
2075          * the manufacturer mode is disabled with reset and activating the
2076          * downloaded patch.
2077          *
2078          * If the firmware patching fails, the manufacturer mode is
2079          * disabled with reset and deactivating the patch.
2080          *
2081          * If the default patch file is used, no reset is done when disabling
2082          * the manufacturer.
2083          */
2084         while (fw->size > fw_ptr - fw->data) {
2085                 int ret;
2086
2087                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2088                                                  &disable_patch);
2089                 if (ret < 0)
2090                         goto exit_mfg_deactivate;
2091         }
2092
2093         release_firmware(fw);
2094
2095         if (disable_patch)
2096                 goto exit_mfg_disable;
2097
2098         /* Patching completed successfully and disable the manufacturer mode
2099          * with reset and activate the downloaded firmware patches.
2100          */
2101         err = btintel_exit_mfg(hdev, true, true);
2102         if (err)
2103                 return err;
2104
2105         /* Need build number for downloaded fw patches in
2106          * every power-on boot
2107          */
2108        err = btintel_read_version(hdev, &ver);
2109        if (err)
2110                return err;
2111        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2112                    ver.fw_patch_num);
2113
2114         goto complete;
2115
2116 exit_mfg_disable:
2117         /* Disable the manufacturer mode without reset */
2118         err = btintel_exit_mfg(hdev, false, false);
2119         if (err)
2120                 return err;
2121
2122         bt_dev_info(hdev, "Intel firmware patch completed");
2123
2124         goto complete;
2125
2126 exit_mfg_deactivate:
2127         release_firmware(fw);
2128
2129         /* Patching failed. Disable the manufacturer mode with reset and
2130          * deactivate the downloaded firmware patches.
2131          */
2132         err = btintel_exit_mfg(hdev, true, false);
2133         if (err)
2134                 return err;
2135
2136         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2137
2138 complete:
2139         /* Set the event mask for Intel specific vendor events. This enables
2140          * a few extra events that are useful during general operation.
2141          */
2142         btintel_set_event_mask_mfg(hdev, false);
2143
2144         btintel_check_bdaddr(hdev);
2145         return 0;
2146 }
2147
2148 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2149 {
2150         struct sk_buff *skb;
2151         struct hci_event_hdr *hdr;
2152         struct hci_ev_cmd_complete *evt;
2153
2154         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2155         if (!skb)
2156                 return -ENOMEM;
2157
2158         hdr = skb_put(skb, sizeof(*hdr));
2159         hdr->evt = HCI_EV_CMD_COMPLETE;
2160         hdr->plen = sizeof(*evt) + 1;
2161
2162         evt = skb_put(skb, sizeof(*evt));
2163         evt->ncmd = 0x01;
2164         evt->opcode = cpu_to_le16(opcode);
2165
2166         skb_put_u8(skb, 0x00);
2167
2168         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2169
2170         return hci_recv_frame(hdev, skb);
2171 }
2172
2173 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2174                                  int count)
2175 {
2176         /* When the device is in bootloader mode, then it can send
2177          * events via the bulk endpoint. These events are treated the
2178          * same way as the ones received from the interrupt endpoint.
2179          */
2180         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2181                 return btusb_recv_intr(data, buffer, count);
2182
2183         return btusb_recv_bulk(data, buffer, count);
2184 }
2185
2186 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2187                                unsigned int len)
2188 {
2189         const struct intel_bootup *evt = ptr;
2190
2191         if (len != sizeof(*evt))
2192                 return;
2193
2194         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2195                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2196 }
2197
2198 static void btusb_intel_secure_send_result(struct btusb_data *data,
2199                                            const void *ptr, unsigned int len)
2200 {
2201         const struct intel_secure_send_result *evt = ptr;
2202
2203         if (len != sizeof(*evt))
2204                 return;
2205
2206         if (evt->result)
2207                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2208
2209         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2210             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2211                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2212 }
2213
2214 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2215 {
2216         struct btusb_data *data = hci_get_drvdata(hdev);
2217
2218         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2219                 struct hci_event_hdr *hdr = (void *)skb->data;
2220
2221                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2222                     hdr->plen > 0) {
2223                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2224                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2225
2226                         switch (skb->data[2]) {
2227                         case 0x02:
2228                                 /* When switching to the operational firmware
2229                                  * the device sends a vendor specific event
2230                                  * indicating that the bootup completed.
2231                                  */
2232                                 btusb_intel_bootup(data, ptr, len);
2233                                 break;
2234                         case 0x06:
2235                                 /* When the firmware loading completes the
2236                                  * device sends out a vendor specific event
2237                                  * indicating the result of the firmware
2238                                  * loading.
2239                                  */
2240                                 btusb_intel_secure_send_result(data, ptr, len);
2241                                 break;
2242                         }
2243                 }
2244         }
2245
2246         return hci_recv_frame(hdev, skb);
2247 }
2248
2249 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2250 {
2251         struct btusb_data *data = hci_get_drvdata(hdev);
2252         struct urb *urb;
2253
2254         BT_DBG("%s", hdev->name);
2255
2256         switch (hci_skb_pkt_type(skb)) {
2257         case HCI_COMMAND_PKT:
2258                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2259                         struct hci_command_hdr *cmd = (void *)skb->data;
2260                         __u16 opcode = le16_to_cpu(cmd->opcode);
2261
2262                         /* When in bootloader mode and the command 0xfc09
2263                          * is received, it needs to be send down the
2264                          * bulk endpoint. So allocate a bulk URB instead.
2265                          */
2266                         if (opcode == 0xfc09)
2267                                 urb = alloc_bulk_urb(hdev, skb);
2268                         else
2269                                 urb = alloc_ctrl_urb(hdev, skb);
2270
2271                         /* When the 0xfc01 command is issued to boot into
2272                          * the operational firmware, it will actually not
2273                          * send a command complete event. To keep the flow
2274                          * control working inject that event here.
2275                          */
2276                         if (opcode == 0xfc01)
2277                                 inject_cmd_complete(hdev, opcode);
2278                 } else {
2279                         urb = alloc_ctrl_urb(hdev, skb);
2280                 }
2281                 if (IS_ERR(urb))
2282                         return PTR_ERR(urb);
2283
2284                 hdev->stat.cmd_tx++;
2285                 return submit_or_queue_tx_urb(hdev, urb);
2286
2287         case HCI_ACLDATA_PKT:
2288                 urb = alloc_bulk_urb(hdev, skb);
2289                 if (IS_ERR(urb))
2290                         return PTR_ERR(urb);
2291
2292                 hdev->stat.acl_tx++;
2293                 return submit_or_queue_tx_urb(hdev, urb);
2294
2295         case HCI_SCODATA_PKT:
2296                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2297                         return -ENODEV;
2298
2299                 urb = alloc_isoc_urb(hdev, skb);
2300                 if (IS_ERR(urb))
2301                         return PTR_ERR(urb);
2302
2303                 hdev->stat.sco_tx++;
2304                 return submit_tx_urb(hdev, urb);
2305         }
2306
2307         return -EILSEQ;
2308 }
2309
2310 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2311                                              struct intel_boot_params *params,
2312                                              char *fw_name, size_t len,
2313                                              const char *suffix)
2314 {
2315         switch (ver->hw_variant) {
2316         case 0x0b:      /* SfP */
2317         case 0x0c:      /* WsP */
2318                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2319                         le16_to_cpu(ver->hw_variant),
2320                         le16_to_cpu(params->dev_revid),
2321                         suffix);
2322                 break;
2323         case 0x11:      /* JfP */
2324         case 0x12:      /* ThP */
2325         case 0x13:      /* HrP */
2326         case 0x14:      /* CcP */
2327                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2328                         le16_to_cpu(ver->hw_variant),
2329                         le16_to_cpu(ver->hw_revision),
2330                         le16_to_cpu(ver->fw_revision),
2331                         suffix);
2332                 break;
2333         default:
2334                 return false;
2335         }
2336         return true;
2337 }
2338
2339 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2340                                          struct intel_version *ver,
2341                                          struct intel_boot_params *params)
2342 {
2343         const struct firmware *fw;
2344         u32 boot_param;
2345         char fwname[64];
2346         int err;
2347         struct btusb_data *data = hci_get_drvdata(hdev);
2348
2349         if (!ver || !params)
2350                 return -EINVAL;
2351
2352         /* The hardware platform number has a fixed value of 0x37 and
2353          * for now only accept this single value.
2354          */
2355         if (ver->hw_platform != 0x37) {
2356                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2357                            ver->hw_platform);
2358                 return -EINVAL;
2359         }
2360
2361         /* Check for supported iBT hardware variants of this firmware
2362          * loading method.
2363          *
2364          * This check has been put in place to ensure correct forward
2365          * compatibility options when newer hardware variants come along.
2366          */
2367         switch (ver->hw_variant) {
2368         case 0x0b:      /* SfP */
2369         case 0x0c:      /* WsP */
2370         case 0x11:      /* JfP */
2371         case 0x12:      /* ThP */
2372         case 0x13:      /* HrP */
2373         case 0x14:      /* CcP */
2374                 break;
2375         default:
2376                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2377                            ver->hw_variant);
2378                 return -EINVAL;
2379         }
2380
2381         btintel_version_info(hdev, ver);
2382
2383         /* The firmware variant determines if the device is in bootloader
2384          * mode or is running operational firmware. The value 0x06 identifies
2385          * the bootloader and the value 0x23 identifies the operational
2386          * firmware.
2387          *
2388          * When the operational firmware is already present, then only
2389          * the check for valid Bluetooth device address is needed. This
2390          * determines if the device will be added as configured or
2391          * unconfigured controller.
2392          *
2393          * It is not possible to use the Secure Boot Parameters in this
2394          * case since that command is only available in bootloader mode.
2395          */
2396         if (ver->fw_variant == 0x23) {
2397                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2398                 btintel_check_bdaddr(hdev);
2399                 return 0;
2400         }
2401
2402         /* If the device is not in bootloader mode, then the only possible
2403          * choice is to return an error and abort the device initialization.
2404          */
2405         if (ver->fw_variant != 0x06) {
2406                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2407                            ver->fw_variant);
2408                 return -ENODEV;
2409         }
2410
2411         /* Read the secure boot parameters to identify the operating
2412          * details of the bootloader.
2413          */
2414         err = btintel_read_boot_params(hdev, params);
2415         if (err)
2416                 return err;
2417
2418         /* It is required that every single firmware fragment is acknowledged
2419          * with a command complete event. If the boot parameters indicate
2420          * that this bootloader does not send them, then abort the setup.
2421          */
2422         if (params->limited_cce != 0x00) {
2423                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2424                            params->limited_cce);
2425                 return -EINVAL;
2426         }
2427
2428         /* If the OTP has no valid Bluetooth device address, then there will
2429          * also be no valid address for the operational firmware.
2430          */
2431         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2432                 bt_dev_info(hdev, "No device address configured");
2433                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2434         }
2435
2436         /* With this Intel bootloader only the hardware variant and device
2437          * revision information are used to select the right firmware for SfP
2438          * and WsP.
2439          *
2440          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2441          *
2442          * Currently the supported hardware variants are:
2443          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2444          *   12 (0x0c) for iBT3.5 (WsP)
2445          *
2446          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2447          * variant, HW revision and FW revision, as these are dependent on CNVi
2448          * and RF Combination.
2449          *
2450          *   17 (0x11) for iBT3.5 (JfP)
2451          *   18 (0x12) for iBT3.5 (ThP)
2452          *
2453          * The firmware file name for these will be
2454          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2455          *
2456          */
2457         err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2458                                                 sizeof(fwname), "sfi");
2459         if (!err) {
2460                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2461                 return -EINVAL;
2462         }
2463
2464         err = request_firmware(&fw, fwname, &hdev->dev);
2465         if (err < 0) {
2466                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2467                 return err;
2468         }
2469
2470         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2471
2472         if (fw->size < 644) {
2473                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2474                            fw->size);
2475                 err = -EBADF;
2476                 goto done;
2477         }
2478
2479         set_bit(BTUSB_DOWNLOADING, &data->flags);
2480
2481         /* Start firmware downloading and get boot parameter */
2482         err = btintel_download_firmware(hdev, fw, &boot_param);
2483         if (err < 0) {
2484                 /* When FW download fails, send Intel Reset to retry
2485                  * FW download.
2486                  */
2487                 btintel_reset_to_bootloader(hdev);
2488                 goto done;
2489         }
2490         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2491
2492         bt_dev_info(hdev, "Waiting for firmware download to complete");
2493
2494         /* Before switching the device into operational mode and with that
2495          * booting the loaded firmware, wait for the bootloader notification
2496          * that all fragments have been successfully received.
2497          *
2498          * When the event processing receives the notification, then the
2499          * BTUSB_DOWNLOADING flag will be cleared.
2500          *
2501          * The firmware loading should not take longer than 5 seconds
2502          * and thus just timeout if that happens and fail the setup
2503          * of this device.
2504          */
2505         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2506                                   TASK_INTERRUPTIBLE,
2507                                   msecs_to_jiffies(5000));
2508         if (err == -EINTR) {
2509                 bt_dev_err(hdev, "Firmware loading interrupted");
2510                 goto done;
2511         }
2512
2513         if (err) {
2514                 bt_dev_err(hdev, "Firmware loading timeout");
2515                 err = -ETIMEDOUT;
2516                 btintel_reset_to_bootloader(hdev);
2517                 goto done;
2518         }
2519
2520         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2521                 bt_dev_err(hdev, "Firmware loading failed");
2522                 err = -ENOEXEC;
2523                 goto done;
2524         }
2525
2526 done:
2527         release_firmware(fw);
2528         return err;
2529 }
2530
2531 static int btusb_setup_intel_new(struct hci_dev *hdev)
2532 {
2533         struct btusb_data *data = hci_get_drvdata(hdev);
2534         struct intel_version ver;
2535         struct intel_boot_params params;
2536         u32 boot_param;
2537         char ddcname[64];
2538         ktime_t calltime, delta, rettime;
2539         unsigned long long duration;
2540         int err;
2541         struct intel_debug_features features;
2542
2543         BT_DBG("%s", hdev->name);
2544
2545         /* Set the default boot parameter to 0x0 and it is updated to
2546          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2547          * command while downloading the firmware.
2548          */
2549         boot_param = 0x00000000;
2550
2551         calltime = ktime_get();
2552
2553         /* Read the Intel version information to determine if the device
2554          * is in bootloader mode or if it already has operational firmware
2555          * loaded.
2556          */
2557         err = btintel_read_version(hdev, &ver);
2558         if (err) {
2559                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2560                 btintel_reset_to_bootloader(hdev);
2561                 return err;
2562         }
2563
2564         err = btusb_intel_download_firmware(hdev, &ver, &params);
2565         if (err)
2566                 return err;
2567
2568         /* controller is already having an operational firmware */
2569         if (ver.fw_variant == 0x23)
2570                 goto finish;
2571
2572         rettime = ktime_get();
2573         delta = ktime_sub(rettime, calltime);
2574         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2575
2576         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2577
2578         calltime = ktime_get();
2579
2580         set_bit(BTUSB_BOOTING, &data->flags);
2581
2582         err = btintel_send_intel_reset(hdev, boot_param);
2583         if (err) {
2584                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2585                 btintel_reset_to_bootloader(hdev);
2586                 return err;
2587         }
2588
2589         /* The bootloader will not indicate when the device is ready. This
2590          * is done by the operational firmware sending bootup notification.
2591          *
2592          * Booting into operational firmware should not take longer than
2593          * 1 second. However if that happens, then just fail the setup
2594          * since something went wrong.
2595          */
2596         bt_dev_info(hdev, "Waiting for device to boot");
2597
2598         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2599                                   TASK_INTERRUPTIBLE,
2600                                   msecs_to_jiffies(1000));
2601
2602         if (err == -EINTR) {
2603                 bt_dev_err(hdev, "Device boot interrupted");
2604                 return -EINTR;
2605         }
2606
2607         if (err) {
2608                 bt_dev_err(hdev, "Device boot timeout");
2609                 btintel_reset_to_bootloader(hdev);
2610                 return -ETIMEDOUT;
2611         }
2612
2613         rettime = ktime_get();
2614         delta = ktime_sub(rettime, calltime);
2615         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2616
2617         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2618
2619         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2620
2621         err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2622                                                 sizeof(ddcname), "ddc");
2623
2624         if (!err) {
2625                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2626         } else {
2627                 /* Once the device is running in operational mode, it needs to
2628                  * apply the device configuration (DDC) parameters.
2629                  *
2630                  * The device can work without DDC parameters, so even if it
2631                  * fails to load the file, no need to fail the setup.
2632                  */
2633                 btintel_load_ddc_config(hdev, ddcname);
2634         }
2635
2636         /* Read the Intel supported features and if new exception formats
2637          * supported, need to load the additional DDC config to enable.
2638          */
2639         btintel_read_debug_features(hdev, &features);
2640
2641         /* Set DDC mask for available debug features */
2642         btintel_set_debug_features(hdev, &features);
2643
2644         /* Read the Intel version information after loading the FW  */
2645         err = btintel_read_version(hdev, &ver);
2646         if (err)
2647                 return err;
2648
2649         btintel_version_info(hdev, &ver);
2650
2651 finish:
2652         /* All Intel controllers that support the Microsoft vendor
2653          * extension are using 0xFC1E for VsMsftOpCode.
2654          */
2655         switch (ver.hw_variant) {
2656         case 0x12:      /* ThP */
2657                 hci_set_msft_opcode(hdev, 0xFC1E);
2658                 break;
2659         }
2660
2661         /* Set the event mask for Intel specific vendor events. This enables
2662          * a few extra events that are useful during general operation. It
2663          * does not enable any debugging related events.
2664          *
2665          * The device will function correctly without these events enabled
2666          * and thus no need to fail the setup.
2667          */
2668         btintel_set_event_mask(hdev, false);
2669
2670         return 0;
2671 }
2672
2673 static int btusb_shutdown_intel(struct hci_dev *hdev)
2674 {
2675         struct sk_buff *skb;
2676         long ret;
2677
2678         /* In the shutdown sequence where Bluetooth is turned off followed
2679          * by WiFi being turned off, turning WiFi back on causes issue with
2680          * the RF calibration.
2681          *
2682          * To ensure that any RF activity has been stopped, issue HCI Reset
2683          * command to clear all ongoing activity including advertising,
2684          * scanning etc.
2685          */
2686         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2687         if (IS_ERR(skb)) {
2688                 ret = PTR_ERR(skb);
2689                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2690                 return ret;
2691         }
2692         kfree_skb(skb);
2693
2694         /* Some platforms have an issue with BT LED when the interface is
2695          * down or BT radio is turned off, which takes 5 seconds to BT LED
2696          * goes off. This command turns off the BT LED immediately.
2697          */
2698         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2699         if (IS_ERR(skb)) {
2700                 ret = PTR_ERR(skb);
2701                 bt_dev_err(hdev, "turning off Intel device LED failed");
2702                 return ret;
2703         }
2704         kfree_skb(skb);
2705
2706         return 0;
2707 }
2708
2709 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2710 {
2711         struct sk_buff *skb;
2712
2713         /* Send HCI Reset to the controller to stop any BT activity which
2714          * were triggered. This will help to save power and maintain the
2715          * sync b/w Host and controller
2716          */
2717         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2718         if (IS_ERR(skb)) {
2719                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2720                 return PTR_ERR(skb);
2721         }
2722         kfree_skb(skb);
2723
2724         return 0;
2725 }
2726
2727 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2728 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2729
2730 #define HCI_WMT_MAX_EVENT_SIZE          64
2731
2732 enum {
2733         BTMTK_WMT_PATCH_DWNLD = 0x1,
2734         BTMTK_WMT_FUNC_CTRL = 0x6,
2735         BTMTK_WMT_RST = 0x7,
2736         BTMTK_WMT_SEMAPHORE = 0x17,
2737 };
2738
2739 enum {
2740         BTMTK_WMT_INVALID,
2741         BTMTK_WMT_PATCH_UNDONE,
2742         BTMTK_WMT_PATCH_DONE,
2743         BTMTK_WMT_ON_UNDONE,
2744         BTMTK_WMT_ON_DONE,
2745         BTMTK_WMT_ON_PROGRESS,
2746 };
2747
2748 struct btmtk_wmt_hdr {
2749         u8      dir;
2750         u8      op;
2751         __le16  dlen;
2752         u8      flag;
2753 } __packed;
2754
2755 struct btmtk_hci_wmt_cmd {
2756         struct btmtk_wmt_hdr hdr;
2757         u8 data[256];
2758 } __packed;
2759
2760 struct btmtk_hci_wmt_evt {
2761         struct hci_event_hdr hhdr;
2762         struct btmtk_wmt_hdr whdr;
2763 } __packed;
2764
2765 struct btmtk_hci_wmt_evt_funcc {
2766         struct btmtk_hci_wmt_evt hwhdr;
2767         __be16 status;
2768 } __packed;
2769
2770 struct btmtk_tci_sleep {
2771         u8 mode;
2772         __le16 duration;
2773         __le16 host_duration;
2774         u8 host_wakeup_pin;
2775         u8 time_compensation;
2776 } __packed;
2777
2778 struct btmtk_hci_wmt_params {
2779         u8 op;
2780         u8 flag;
2781         u16 dlen;
2782         const void *data;
2783         u32 *status;
2784 };
2785
2786 static void btusb_mtk_wmt_recv(struct urb *urb)
2787 {
2788         struct hci_dev *hdev = urb->context;
2789         struct btusb_data *data = hci_get_drvdata(hdev);
2790         struct hci_event_hdr *hdr;
2791         struct sk_buff *skb;
2792         int err;
2793
2794         if (urb->status == 0 && urb->actual_length > 0) {
2795                 hdev->stat.byte_rx += urb->actual_length;
2796
2797                 /* WMT event shouldn't be fragmented and the size should be
2798                  * less than HCI_WMT_MAX_EVENT_SIZE.
2799                  */
2800                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2801                 if (!skb) {
2802                         hdev->stat.err_rx++;
2803                         goto err_out;
2804                 }
2805
2806                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2807                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2808
2809                 hdr = (void *)skb->data;
2810                 /* Fix up the vendor event id with 0xff for vendor specific
2811                  * instead of 0xe4 so that event send via monitoring socket can
2812                  * be parsed properly.
2813                  */
2814                 hdr->evt = 0xff;
2815
2816                 /* When someone waits for the WMT event, the skb is being cloned
2817                  * and being processed the events from there then.
2818                  */
2819                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2820                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2821                         if (!data->evt_skb)
2822                                 goto err_out;
2823                 }
2824
2825                 err = hci_recv_frame(hdev, skb);
2826                 if (err < 0)
2827                         goto err_free_skb;
2828
2829                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2830                                        &data->flags)) {
2831                         /* Barrier to sync with other CPUs */
2832                         smp_mb__after_atomic();
2833                         wake_up_bit(&data->flags,
2834                                     BTUSB_TX_WAIT_VND_EVT);
2835                 }
2836 err_out:
2837                 return;
2838 err_free_skb:
2839                 kfree_skb(data->evt_skb);
2840                 data->evt_skb = NULL;
2841                 return;
2842         } else if (urb->status == -ENOENT) {
2843                 /* Avoid suspend failed when usb_kill_urb */
2844                 return;
2845         }
2846
2847         usb_mark_last_busy(data->udev);
2848
2849         /* The URB complete handler is still called with urb->actual_length = 0
2850          * when the event is not available, so we should keep re-submitting
2851          * URB until WMT event returns, Also, It's necessary to wait some time
2852          * between the two consecutive control URBs to relax the target device
2853          * to generate the event. Otherwise, the WMT event cannot return from
2854          * the device successfully.
2855          */
2856         udelay(100);
2857
2858         usb_anchor_urb(urb, &data->ctrl_anchor);
2859         err = usb_submit_urb(urb, GFP_ATOMIC);
2860         if (err < 0) {
2861                 /* -EPERM: urb is being killed;
2862                  * -ENODEV: device got disconnected
2863                  */
2864                 if (err != -EPERM && err != -ENODEV)
2865                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2866                                    urb, -err);
2867                 usb_unanchor_urb(urb);
2868         }
2869 }
2870
2871 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2872 {
2873         struct btusb_data *data = hci_get_drvdata(hdev);
2874         struct usb_ctrlrequest *dr;
2875         unsigned char *buf;
2876         int err, size = 64;
2877         unsigned int pipe;
2878         struct urb *urb;
2879
2880         urb = usb_alloc_urb(0, GFP_KERNEL);
2881         if (!urb)
2882                 return -ENOMEM;
2883
2884         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2885         if (!dr) {
2886                 usb_free_urb(urb);
2887                 return -ENOMEM;
2888         }
2889
2890         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2891         dr->bRequest     = 1;
2892         dr->wIndex       = cpu_to_le16(0);
2893         dr->wValue       = cpu_to_le16(48);
2894         dr->wLength      = cpu_to_le16(size);
2895
2896         buf = kmalloc(size, GFP_KERNEL);
2897         if (!buf) {
2898                 kfree(dr);
2899                 return -ENOMEM;
2900         }
2901
2902         pipe = usb_rcvctrlpipe(data->udev, 0);
2903
2904         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2905                              buf, size, btusb_mtk_wmt_recv, hdev);
2906
2907         urb->transfer_flags |= URB_FREE_BUFFER;
2908
2909         usb_anchor_urb(urb, &data->ctrl_anchor);
2910         err = usb_submit_urb(urb, GFP_KERNEL);
2911         if (err < 0) {
2912                 if (err != -EPERM && err != -ENODEV)
2913                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2914                                    urb, -err);
2915                 usb_unanchor_urb(urb);
2916         }
2917
2918         usb_free_urb(urb);
2919
2920         return err;
2921 }
2922
2923 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2924                                   struct btmtk_hci_wmt_params *wmt_params)
2925 {
2926         struct btusb_data *data = hci_get_drvdata(hdev);
2927         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2928         u32 hlen, status = BTMTK_WMT_INVALID;
2929         struct btmtk_hci_wmt_evt *wmt_evt;
2930         struct btmtk_hci_wmt_cmd wc;
2931         struct btmtk_wmt_hdr *hdr;
2932         int err;
2933
2934         /* Submit control IN URB on demand to process the WMT event */
2935         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2936         if (err < 0)
2937                 return err;
2938
2939         /* Send the WMT command and wait until the WMT event returns */
2940         hlen = sizeof(*hdr) + wmt_params->dlen;
2941         if (hlen > 255)
2942                 return -EINVAL;
2943
2944         hdr = (struct btmtk_wmt_hdr *)&wc;
2945         hdr->dir = 1;
2946         hdr->op = wmt_params->op;
2947         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2948         hdr->flag = wmt_params->flag;
2949         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2950
2951         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2952
2953         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2954
2955         if (err < 0) {
2956                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2957                 return err;
2958         }
2959
2960         /* The vendor specific WMT commands are all answered by a vendor
2961          * specific event and will have the Command Status or Command
2962          * Complete as with usual HCI command flow control.
2963          *
2964          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2965          * state to be cleared. The driver specific event receive routine
2966          * will clear that state and with that indicate completion of the
2967          * WMT command.
2968          */
2969         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2970                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2971         if (err == -EINTR) {
2972                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2973                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2974                 return err;
2975         }
2976
2977         if (err) {
2978                 bt_dev_err(hdev, "Execution of wmt command timed out");
2979                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2980                 return -ETIMEDOUT;
2981         }
2982
2983         /* Parse and handle the return WMT event */
2984         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2985         if (wmt_evt->whdr.op != hdr->op) {
2986                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2987                            wmt_evt->whdr.op, hdr->op);
2988                 err = -EIO;
2989                 goto err_free_skb;
2990         }
2991
2992         switch (wmt_evt->whdr.op) {
2993         case BTMTK_WMT_SEMAPHORE:
2994                 if (wmt_evt->whdr.flag == 2)
2995                         status = BTMTK_WMT_PATCH_UNDONE;
2996                 else
2997                         status = BTMTK_WMT_PATCH_DONE;
2998                 break;
2999         case BTMTK_WMT_FUNC_CTRL:
3000                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3001                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3002                         status = BTMTK_WMT_ON_DONE;
3003                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3004                         status = BTMTK_WMT_ON_PROGRESS;
3005                 else
3006                         status = BTMTK_WMT_ON_UNDONE;
3007                 break;
3008         }
3009
3010         if (wmt_params->status)
3011                 *wmt_params->status = status;
3012
3013 err_free_skb:
3014         kfree_skb(data->evt_skb);
3015         data->evt_skb = NULL;
3016
3017         return err;
3018 }
3019
3020 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3021 {
3022         struct btmtk_hci_wmt_params wmt_params;
3023         const struct firmware *fw;
3024         const u8 *fw_ptr;
3025         size_t fw_size;
3026         int err, dlen;
3027         u8 flag, param;
3028
3029         err = request_firmware(&fw, fwname, &hdev->dev);
3030         if (err < 0) {
3031                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3032                 return err;
3033         }
3034
3035         /* Power on data RAM the firmware relies on. */
3036         param = 1;
3037         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3038         wmt_params.flag = 3;
3039         wmt_params.dlen = sizeof(param);
3040         wmt_params.data = &param;
3041         wmt_params.status = NULL;
3042
3043         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3044         if (err < 0) {
3045                 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3046                 return err;
3047         }
3048
3049         fw_ptr = fw->data;
3050         fw_size = fw->size;
3051
3052         /* The size of patch header is 30 bytes, should be skip */
3053         if (fw_size < 30) {
3054                 err = -EINVAL;
3055                 goto err_release_fw;
3056         }
3057
3058         fw_size -= 30;
3059         fw_ptr += 30;
3060         flag = 1;
3061
3062         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3063         wmt_params.status = NULL;
3064
3065         while (fw_size > 0) {
3066                 dlen = min_t(int, 250, fw_size);
3067
3068                 /* Tell deivice the position in sequence */
3069                 if (fw_size - dlen <= 0)
3070                         flag = 3;
3071                 else if (fw_size < fw->size - 30)
3072                         flag = 2;
3073
3074                 wmt_params.flag = flag;
3075                 wmt_params.dlen = dlen;
3076                 wmt_params.data = fw_ptr;
3077
3078                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3079                 if (err < 0) {
3080                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3081                                    err);
3082                         goto err_release_fw;
3083                 }
3084
3085                 fw_size -= dlen;
3086                 fw_ptr += dlen;
3087         }
3088
3089         wmt_params.op = BTMTK_WMT_RST;
3090         wmt_params.flag = 4;
3091         wmt_params.dlen = 0;
3092         wmt_params.data = NULL;
3093         wmt_params.status = NULL;
3094
3095         /* Activate funciton the firmware providing to */
3096         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3097         if (err < 0) {
3098                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3099                 goto err_release_fw;
3100         }
3101
3102         /* Wait a few moments for firmware activation done */
3103         usleep_range(10000, 12000);
3104
3105 err_release_fw:
3106         release_firmware(fw);
3107
3108         return err;
3109 }
3110
3111 static int btusb_mtk_func_query(struct hci_dev *hdev)
3112 {
3113         struct btmtk_hci_wmt_params wmt_params;
3114         int status, err;
3115         u8 param = 0;
3116
3117         /* Query whether the function is enabled */
3118         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3119         wmt_params.flag = 4;
3120         wmt_params.dlen = sizeof(param);
3121         wmt_params.data = &param;
3122         wmt_params.status = &status;
3123
3124         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3125         if (err < 0) {
3126                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3127                 return err;
3128         }
3129
3130         return status;
3131 }
3132
3133 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3134 {
3135         int pipe, err, size = sizeof(u32);
3136         void *buf;
3137
3138         buf = kzalloc(size, GFP_KERNEL);
3139         if (!buf)
3140                 return -ENOMEM;
3141
3142         pipe = usb_rcvctrlpipe(data->udev, 0);
3143         err = usb_control_msg(data->udev, pipe, 0x63,
3144                               USB_TYPE_VENDOR | USB_DIR_IN,
3145                               reg >> 16, reg & 0xffff,
3146                               buf, size, USB_CTRL_SET_TIMEOUT);
3147         if (err < 0)
3148                 goto err_free_buf;
3149
3150         *val = get_unaligned_le32(buf);
3151
3152 err_free_buf:
3153         kfree(buf);
3154
3155         return err;
3156 }
3157
3158 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
3159 {
3160         return btusb_mtk_reg_read(data, 0x80000008, id);
3161 }
3162
3163 static int btusb_mtk_setup(struct hci_dev *hdev)
3164 {
3165         struct btusb_data *data = hci_get_drvdata(hdev);
3166         struct btmtk_hci_wmt_params wmt_params;
3167         ktime_t calltime, delta, rettime;
3168         struct btmtk_tci_sleep tci_sleep;
3169         unsigned long long duration;
3170         struct sk_buff *skb;
3171         const char *fwname;
3172         int err, status;
3173         u32 dev_id;
3174         u8 param;
3175
3176         calltime = ktime_get();
3177
3178         err = btusb_mtk_id_get(data, &dev_id);
3179         if (err < 0) {
3180                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3181                 return err;
3182         }
3183
3184         switch (dev_id) {
3185         case 0x7663:
3186                 fwname = FIRMWARE_MT7663;
3187                 break;
3188         case 0x7668:
3189                 fwname = FIRMWARE_MT7668;
3190                 break;
3191         default:
3192                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3193                            dev_id);
3194                 return -ENODEV;
3195         }
3196
3197         /* Query whether the firmware is already download */
3198         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3199         wmt_params.flag = 1;
3200         wmt_params.dlen = 0;
3201         wmt_params.data = NULL;
3202         wmt_params.status = &status;
3203
3204         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3205         if (err < 0) {
3206                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3207                 return err;
3208         }
3209
3210         if (status == BTMTK_WMT_PATCH_DONE) {
3211                 bt_dev_info(hdev, "firmware already downloaded");
3212                 goto ignore_setup_fw;
3213         }
3214
3215         /* Setup a firmware which the device definitely requires */
3216         err = btusb_mtk_setup_firmware(hdev, fwname);
3217         if (err < 0)
3218                 return err;
3219
3220 ignore_setup_fw:
3221         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3222                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3223                                  2000, 5000000);
3224         /* -ETIMEDOUT happens */
3225         if (err < 0)
3226                 return err;
3227
3228         /* The other errors happen in btusb_mtk_func_query */
3229         if (status < 0)
3230                 return status;
3231
3232         if (status == BTMTK_WMT_ON_DONE) {
3233                 bt_dev_info(hdev, "function already on");
3234                 goto ignore_func_on;
3235         }
3236
3237         /* Enable Bluetooth protocol */
3238         param = 1;
3239         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3240         wmt_params.flag = 0;
3241         wmt_params.dlen = sizeof(param);
3242         wmt_params.data = &param;
3243         wmt_params.status = NULL;
3244
3245         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3246         if (err < 0) {
3247                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3248                 return err;
3249         }
3250
3251 ignore_func_on:
3252         /* Apply the low power environment setup */
3253         tci_sleep.mode = 0x5;
3254         tci_sleep.duration = cpu_to_le16(0x640);
3255         tci_sleep.host_duration = cpu_to_le16(0x640);
3256         tci_sleep.host_wakeup_pin = 0;
3257         tci_sleep.time_compensation = 0;
3258
3259         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3260                              HCI_INIT_TIMEOUT);
3261         if (IS_ERR(skb)) {
3262                 err = PTR_ERR(skb);
3263                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3264                 return err;
3265         }
3266         kfree_skb(skb);
3267
3268         rettime = ktime_get();
3269         delta = ktime_sub(rettime, calltime);
3270         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3271
3272         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3273
3274         return 0;
3275 }
3276
3277 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3278 {
3279         struct btmtk_hci_wmt_params wmt_params;
3280         u8 param = 0;
3281         int err;
3282
3283         /* Disable the device */
3284         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3285         wmt_params.flag = 0;
3286         wmt_params.dlen = sizeof(param);
3287         wmt_params.data = &param;
3288         wmt_params.status = NULL;
3289
3290         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3291         if (err < 0) {
3292                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3293                 return err;
3294         }
3295
3296         return 0;
3297 }
3298
3299 MODULE_FIRMWARE(FIRMWARE_MT7663);
3300 MODULE_FIRMWARE(FIRMWARE_MT7668);
3301
3302 #ifdef CONFIG_PM
3303 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3304 static int marvell_config_oob_wake(struct hci_dev *hdev)
3305 {
3306         struct sk_buff *skb;
3307         struct btusb_data *data = hci_get_drvdata(hdev);
3308         struct device *dev = &data->udev->dev;
3309         u16 pin, gap, opcode;
3310         int ret;
3311         u8 cmd[5];
3312
3313         /* Move on if no wakeup pin specified */
3314         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3315             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3316                 return 0;
3317
3318         /* Vendor specific command to configure a GPIO as wake-up pin */
3319         opcode = hci_opcode_pack(0x3F, 0x59);
3320         cmd[0] = opcode & 0xFF;
3321         cmd[1] = opcode >> 8;
3322         cmd[2] = 2; /* length of parameters that follow */
3323         cmd[3] = pin;
3324         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3325
3326         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3327         if (!skb) {
3328                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3329                 return -ENOMEM;
3330         }
3331
3332         skb_put_data(skb, cmd, sizeof(cmd));
3333         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3334
3335         ret = btusb_send_frame(hdev, skb);
3336         if (ret) {
3337                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3338                 kfree_skb(skb);
3339                 return ret;
3340         }
3341
3342         return 0;
3343 }
3344 #endif
3345
3346 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3347                                     const bdaddr_t *bdaddr)
3348 {
3349         struct sk_buff *skb;
3350         u8 buf[8];
3351         long ret;
3352
3353         buf[0] = 0xfe;
3354         buf[1] = sizeof(bdaddr_t);
3355         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3356
3357         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3358         if (IS_ERR(skb)) {
3359                 ret = PTR_ERR(skb);
3360                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3361                            ret);
3362                 return ret;
3363         }
3364         kfree_skb(skb);
3365
3366         return 0;
3367 }
3368
3369 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3370                                     const bdaddr_t *bdaddr)
3371 {
3372         struct sk_buff *skb;
3373         u8 buf[10];
3374         long ret;
3375
3376         buf[0] = 0x01;
3377         buf[1] = 0x01;
3378         buf[2] = 0x00;
3379         buf[3] = sizeof(bdaddr_t);
3380         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3381
3382         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3383         if (IS_ERR(skb)) {
3384                 ret = PTR_ERR(skb);
3385                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3386                 return ret;
3387         }
3388         kfree_skb(skb);
3389
3390         return 0;
3391 }
3392
3393 #define QCA_DFU_PACKET_LEN      4096
3394
3395 #define QCA_GET_TARGET_VERSION  0x09
3396 #define QCA_CHECK_STATUS        0x05
3397 #define QCA_DFU_DOWNLOAD        0x01
3398
3399 #define QCA_SYSCFG_UPDATED      0x40
3400 #define QCA_PATCH_UPDATED       0x80
3401 #define QCA_DFU_TIMEOUT         3000
3402
3403 struct qca_version {
3404         __le32  rom_version;
3405         __le32  patch_version;
3406         __le32  ram_version;
3407         __le32  ref_clock;
3408         __u8    reserved[4];
3409 } __packed;
3410
3411 struct qca_rampatch_version {
3412         __le16  rom_version;
3413         __le16  patch_version;
3414 } __packed;
3415
3416 struct qca_device_info {
3417         u32     rom_version;
3418         u8      rampatch_hdr;   /* length of header in rampatch */
3419         u8      nvm_hdr;        /* length of header in NVM */
3420         u8      ver_offset;     /* offset of version structure in rampatch */
3421 };
3422
3423 static const struct qca_device_info qca_devices_table[] = {
3424         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3425         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3426         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3427         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3428         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3429         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3430 };
3431
3432 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3433                                      void *data, u16 size)
3434 {
3435         int pipe, err;
3436         u8 *buf;
3437
3438         buf = kmalloc(size, GFP_KERNEL);
3439         if (!buf)
3440                 return -ENOMEM;
3441
3442         /* Found some of USB hosts have IOT issues with ours so that we should
3443          * not wait until HCI layer is ready.
3444          */
3445         pipe = usb_rcvctrlpipe(udev, 0);
3446         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3447                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3448         if (err < 0) {
3449                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3450                 goto done;
3451         }
3452
3453         memcpy(data, buf, size);
3454
3455 done:
3456         kfree(buf);
3457
3458         return err;
3459 }
3460
3461 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3462                                        const struct firmware *firmware,
3463                                        size_t hdr_size)
3464 {
3465         struct btusb_data *btdata = hci_get_drvdata(hdev);
3466         struct usb_device *udev = btdata->udev;
3467         size_t count, size, sent = 0;
3468         int pipe, len, err;
3469         u8 *buf;
3470
3471         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3472         if (!buf)
3473                 return -ENOMEM;
3474
3475         count = firmware->size;
3476
3477         size = min_t(size_t, count, hdr_size);
3478         memcpy(buf, firmware->data, size);
3479
3480         /* USB patches should go down to controller through USB path
3481          * because binary format fits to go down through USB channel.
3482          * USB control path is for patching headers and USB bulk is for
3483          * patch body.
3484          */
3485         pipe = usb_sndctrlpipe(udev, 0);
3486         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3487                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3488         if (err < 0) {
3489                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3490                 goto done;
3491         }
3492
3493         sent += size;
3494         count -= size;
3495
3496         while (count) {
3497                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3498
3499                 memcpy(buf, firmware->data + sent, size);
3500
3501                 pipe = usb_sndbulkpipe(udev, 0x02);
3502                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3503                                    QCA_DFU_TIMEOUT);
3504                 if (err < 0) {
3505                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3506                                    sent, firmware->size, err);
3507                         break;
3508                 }
3509
3510                 if (size != len) {
3511                         bt_dev_err(hdev, "Failed to get bulk buffer");
3512                         err = -EILSEQ;
3513                         break;
3514                 }
3515
3516                 sent  += size;
3517                 count -= size;
3518         }
3519
3520 done:
3521         kfree(buf);
3522         return err;
3523 }
3524
3525 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3526                                          struct qca_version *ver,
3527                                          const struct qca_device_info *info)
3528 {
3529         struct qca_rampatch_version *rver;
3530         const struct firmware *fw;
3531         u32 ver_rom, ver_patch;
3532         u16 rver_rom, rver_patch;
3533         char fwname[64];
3534         int err;
3535
3536         ver_rom = le32_to_cpu(ver->rom_version);
3537         ver_patch = le32_to_cpu(ver->patch_version);
3538
3539         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3540
3541         err = request_firmware(&fw, fwname, &hdev->dev);
3542         if (err) {
3543                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3544                            fwname, err);
3545                 return err;
3546         }
3547
3548         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3549
3550         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3551         rver_rom = le16_to_cpu(rver->rom_version);
3552         rver_patch = le16_to_cpu(rver->patch_version);
3553
3554         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3555                     "firmware rome 0x%x build 0x%x",
3556                     rver_rom, rver_patch, ver_rom, ver_patch);
3557
3558         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3559                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3560                 err = -EINVAL;
3561                 goto done;
3562         }
3563
3564         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3565
3566 done:
3567         release_firmware(fw);
3568
3569         return err;
3570 }
3571
3572 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3573                                     struct qca_version *ver,
3574                                     const struct qca_device_info *info)
3575 {
3576         const struct firmware *fw;
3577         char fwname[64];
3578         int err;
3579
3580         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3581                  le32_to_cpu(ver->rom_version));
3582
3583         err = request_firmware(&fw, fwname, &hdev->dev);
3584         if (err) {
3585                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3586                            fwname, err);
3587                 return err;
3588         }
3589
3590         bt_dev_info(hdev, "using NVM file: %s", fwname);
3591
3592         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3593
3594         release_firmware(fw);
3595
3596         return err;
3597 }
3598
3599 /* identify the ROM version and check whether patches are needed */
3600 static bool btusb_qca_need_patch(struct usb_device *udev)
3601 {
3602         struct qca_version ver;
3603
3604         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3605                                       sizeof(ver)) < 0)
3606                 return false;
3607         /* only low ROM versions need patches */
3608         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3609 }
3610
3611 static int btusb_setup_qca(struct hci_dev *hdev)
3612 {
3613         struct btusb_data *btdata = hci_get_drvdata(hdev);
3614         struct usb_device *udev = btdata->udev;
3615         const struct qca_device_info *info = NULL;
3616         struct qca_version ver;
3617         u32 ver_rom;
3618         u8 status;
3619         int i, err;
3620
3621         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3622                                         sizeof(ver));
3623         if (err < 0)
3624                 return err;
3625
3626         ver_rom = le32_to_cpu(ver.rom_version);
3627         /* Don't care about high ROM versions */
3628         if (ver_rom & ~0xffffU)
3629                 return 0;
3630
3631         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3632                 if (ver_rom == qca_devices_table[i].rom_version)
3633                         info = &qca_devices_table[i];
3634         }
3635         if (!info) {
3636                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3637                 return -ENODEV;
3638         }
3639
3640         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3641                                         sizeof(status));
3642         if (err < 0)
3643                 return err;
3644
3645         if (!(status & QCA_PATCH_UPDATED)) {
3646                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3647                 if (err < 0)
3648                         return err;
3649         }
3650
3651         if (!(status & QCA_SYSCFG_UPDATED)) {
3652                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3653                 if (err < 0)
3654                         return err;
3655         }
3656
3657         return 0;
3658 }
3659
3660 static inline int __set_diag_interface(struct hci_dev *hdev)
3661 {
3662         struct btusb_data *data = hci_get_drvdata(hdev);
3663         struct usb_interface *intf = data->diag;
3664         int i;
3665
3666         if (!data->diag)
3667                 return -ENODEV;
3668
3669         data->diag_tx_ep = NULL;
3670         data->diag_rx_ep = NULL;
3671
3672         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3673                 struct usb_endpoint_descriptor *ep_desc;
3674
3675                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3676
3677                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3678                         data->diag_tx_ep = ep_desc;
3679                         continue;
3680                 }
3681
3682                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3683                         data->diag_rx_ep = ep_desc;
3684                         continue;
3685                 }
3686         }
3687
3688         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3689                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3690                 return -ENODEV;
3691         }
3692
3693         return 0;
3694 }
3695
3696 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3697 {
3698         struct btusb_data *data = hci_get_drvdata(hdev);
3699         struct sk_buff *skb;
3700         struct urb *urb;
3701         unsigned int pipe;
3702
3703         if (!data->diag_tx_ep)
3704                 return ERR_PTR(-ENODEV);
3705
3706         urb = usb_alloc_urb(0, GFP_KERNEL);
3707         if (!urb)
3708                 return ERR_PTR(-ENOMEM);
3709
3710         skb = bt_skb_alloc(2, GFP_KERNEL);
3711         if (!skb) {
3712                 usb_free_urb(urb);
3713                 return ERR_PTR(-ENOMEM);
3714         }
3715
3716         skb_put_u8(skb, 0xf0);
3717         skb_put_u8(skb, enable);
3718
3719         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3720
3721         usb_fill_bulk_urb(urb, data->udev, pipe,
3722                           skb->data, skb->len, btusb_tx_complete, skb);
3723
3724         skb->dev = (void *)hdev;
3725
3726         return urb;
3727 }
3728
3729 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3730 {
3731         struct btusb_data *data = hci_get_drvdata(hdev);
3732         struct urb *urb;
3733
3734         if (!data->diag)
3735                 return -ENODEV;
3736
3737         if (!test_bit(HCI_RUNNING, &hdev->flags))
3738                 return -ENETDOWN;
3739
3740         urb = alloc_diag_urb(hdev, enable);
3741         if (IS_ERR(urb))
3742                 return PTR_ERR(urb);
3743
3744         return submit_or_queue_tx_urb(hdev, urb);
3745 }
3746
3747 #ifdef CONFIG_PM
3748 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3749 {
3750         struct btusb_data *data = priv;
3751
3752         pm_wakeup_event(&data->udev->dev, 0);
3753         pm_system_wakeup();
3754
3755         /* Disable only if not already disabled (keep it balanced) */
3756         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3757                 disable_irq_nosync(irq);
3758                 disable_irq_wake(irq);
3759         }
3760         return IRQ_HANDLED;
3761 }
3762
3763 static const struct of_device_id btusb_match_table[] = {
3764         { .compatible = "usb1286,204e" },
3765         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3766         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3767         { }
3768 };
3769 MODULE_DEVICE_TABLE(of, btusb_match_table);
3770
3771 /* Use an oob wakeup pin? */
3772 static int btusb_config_oob_wake(struct hci_dev *hdev)
3773 {
3774         struct btusb_data *data = hci_get_drvdata(hdev);
3775         struct device *dev = &data->udev->dev;
3776         int irq, ret;
3777
3778         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3779
3780         if (!of_match_device(btusb_match_table, dev))
3781                 return 0;
3782
3783         /* Move on if no IRQ specified */
3784         irq = of_irq_get_byname(dev->of_node, "wakeup");
3785         if (irq <= 0) {
3786                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3787                 return 0;
3788         }
3789
3790         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3791         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3792                                0, "OOB Wake-on-BT", data);
3793         if (ret) {
3794                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3795                 return ret;
3796         }
3797
3798         ret = device_init_wakeup(dev, true);
3799         if (ret) {
3800                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3801                 return ret;
3802         }
3803
3804         data->oob_wake_irq = irq;
3805         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3806         return 0;
3807 }
3808 #endif
3809
3810 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3811 {
3812         if (dmi_check_system(btusb_needs_reset_resume_table))
3813                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3814 }
3815
3816 static bool btusb_prevent_wake(struct hci_dev *hdev)
3817 {
3818         struct btusb_data *data = hci_get_drvdata(hdev);
3819
3820         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
3821                 return true;
3822
3823         return !device_may_wakeup(&data->udev->dev);
3824 }
3825
3826 static int btusb_probe(struct usb_interface *intf,
3827                        const struct usb_device_id *id)
3828 {
3829         struct usb_endpoint_descriptor *ep_desc;
3830         struct gpio_desc *reset_gpio;
3831         struct btusb_data *data;
3832         struct hci_dev *hdev;
3833         unsigned ifnum_base;
3834         int i, err;
3835
3836         BT_DBG("intf %p id %p", intf, id);
3837
3838         /* interface numbers are hardcoded in the spec */
3839         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3840                 if (!(id->driver_info & BTUSB_IFNUM_2))
3841                         return -ENODEV;
3842                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3843                         return -ENODEV;
3844         }
3845
3846         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3847
3848         if (!id->driver_info) {
3849                 const struct usb_device_id *match;
3850
3851                 match = usb_match_id(intf, blacklist_table);
3852                 if (match)
3853                         id = match;
3854         }
3855
3856         if (id->driver_info == BTUSB_IGNORE)
3857                 return -ENODEV;
3858
3859         if (id->driver_info & BTUSB_ATH3012) {
3860                 struct usb_device *udev = interface_to_usbdev(intf);
3861
3862                 /* Old firmware would otherwise let ath3k driver load
3863                  * patch and sysconfig files
3864                  */
3865                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3866                     !btusb_qca_need_patch(udev))
3867                         return -ENODEV;
3868         }
3869
3870         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3871         if (!data)
3872                 return -ENOMEM;
3873
3874         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3875                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3876
3877                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3878                         data->intr_ep = ep_desc;
3879                         continue;
3880                 }
3881
3882                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3883                         data->bulk_tx_ep = ep_desc;
3884                         continue;
3885                 }
3886
3887                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3888                         data->bulk_rx_ep = ep_desc;
3889                         continue;
3890                 }
3891         }
3892
3893         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3894                 return -ENODEV;
3895
3896         if (id->driver_info & BTUSB_AMP) {
3897                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3898                 data->cmdreq = 0x2b;
3899         } else {
3900                 data->cmdreq_type = USB_TYPE_CLASS;
3901                 data->cmdreq = 0x00;
3902         }
3903
3904         data->udev = interface_to_usbdev(intf);
3905         data->intf = intf;
3906
3907         INIT_WORK(&data->work, btusb_work);
3908         INIT_WORK(&data->waker, btusb_waker);
3909         init_usb_anchor(&data->deferred);
3910         init_usb_anchor(&data->tx_anchor);
3911         spin_lock_init(&data->txlock);
3912
3913         init_usb_anchor(&data->intr_anchor);
3914         init_usb_anchor(&data->bulk_anchor);
3915         init_usb_anchor(&data->isoc_anchor);
3916         init_usb_anchor(&data->diag_anchor);
3917         init_usb_anchor(&data->ctrl_anchor);
3918         spin_lock_init(&data->rxlock);
3919
3920         if (id->driver_info & BTUSB_INTEL_NEW) {
3921                 data->recv_event = btusb_recv_event_intel;
3922                 data->recv_bulk = btusb_recv_bulk_intel;
3923                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3924         } else {
3925                 data->recv_event = hci_recv_frame;
3926                 data->recv_bulk = btusb_recv_bulk;
3927         }
3928
3929         hdev = hci_alloc_dev();
3930         if (!hdev)
3931                 return -ENOMEM;
3932
3933         hdev->bus = HCI_USB;
3934         hci_set_drvdata(hdev, data);
3935
3936         if (id->driver_info & BTUSB_AMP)
3937                 hdev->dev_type = HCI_AMP;
3938         else
3939                 hdev->dev_type = HCI_PRIMARY;
3940
3941         data->hdev = hdev;
3942
3943         SET_HCIDEV_DEV(hdev, &intf->dev);
3944
3945         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3946                                         GPIOD_OUT_LOW);
3947         if (IS_ERR(reset_gpio)) {
3948                 err = PTR_ERR(reset_gpio);
3949                 goto out_free_dev;
3950         } else if (reset_gpio) {
3951                 data->reset_gpio = reset_gpio;
3952         }
3953
3954         hdev->open   = btusb_open;
3955         hdev->close  = btusb_close;
3956         hdev->flush  = btusb_flush;
3957         hdev->send   = btusb_send_frame;
3958         hdev->notify = btusb_notify;
3959         hdev->prevent_wake = btusb_prevent_wake;
3960
3961 #ifdef CONFIG_PM
3962         err = btusb_config_oob_wake(hdev);
3963         if (err)
3964                 goto out_free_dev;
3965
3966         /* Marvell devices may need a specific chip configuration */
3967         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3968                 err = marvell_config_oob_wake(hdev);
3969                 if (err)
3970                         goto out_free_dev;
3971         }
3972 #endif
3973         if (id->driver_info & BTUSB_CW6622)
3974                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3975
3976         if (id->driver_info & BTUSB_BCM2045)
3977                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3978
3979         if (id->driver_info & BTUSB_BCM92035)
3980                 hdev->setup = btusb_setup_bcm92035;
3981
3982         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3983             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3984                 hdev->manufacturer = 15;
3985                 hdev->setup = btbcm_setup_patchram;
3986                 hdev->set_diag = btusb_bcm_set_diag;
3987                 hdev->set_bdaddr = btbcm_set_bdaddr;
3988
3989                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3990                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3991         }
3992
3993         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3994             (id->driver_info & BTUSB_BCM_APPLE)) {
3995                 hdev->manufacturer = 15;
3996                 hdev->setup = btbcm_setup_apple;
3997                 hdev->set_diag = btusb_bcm_set_diag;
3998
3999                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4000                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4001         }
4002
4003         if (id->driver_info & BTUSB_INTEL) {
4004                 hdev->manufacturer = 2;
4005                 hdev->setup = btusb_setup_intel;
4006                 hdev->shutdown = btusb_shutdown_intel;
4007                 hdev->set_diag = btintel_set_diag_mfg;
4008                 hdev->set_bdaddr = btintel_set_bdaddr;
4009                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4010                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4011                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4012                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4013         }
4014
4015         if (id->driver_info & BTUSB_INTEL_NEW) {
4016                 hdev->manufacturer = 2;
4017                 hdev->send = btusb_send_frame_intel;
4018                 hdev->setup = btusb_setup_intel_new;
4019                 hdev->shutdown = btusb_shutdown_intel_new;
4020                 hdev->hw_error = btintel_hw_error;
4021                 hdev->set_diag = btintel_set_diag;
4022                 hdev->set_bdaddr = btintel_set_bdaddr;
4023                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4024                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4025                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4026                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4027         }
4028
4029         if (id->driver_info & BTUSB_MARVELL)
4030                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4031
4032         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4033             (id->driver_info & BTUSB_MEDIATEK)) {
4034                 hdev->setup = btusb_mtk_setup;
4035                 hdev->shutdown = btusb_mtk_shutdown;
4036                 hdev->manufacturer = 70;
4037                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4038         }
4039
4040         if (id->driver_info & BTUSB_SWAVE) {
4041                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4042                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4043         }
4044
4045         if (id->driver_info & BTUSB_INTEL_BOOT) {
4046                 hdev->manufacturer = 2;
4047                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4048         }
4049
4050         if (id->driver_info & BTUSB_ATH3012) {
4051                 data->setup_on_usb = btusb_setup_qca;
4052                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4053                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4054                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4055         }
4056
4057         if (id->driver_info & BTUSB_QCA_ROME) {
4058                 data->setup_on_usb = btusb_setup_qca;
4059                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4060                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4061                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4062                 btusb_check_needs_reset_resume(intf);
4063         }
4064
4065         if (id->driver_info & BTUSB_AMP) {
4066                 /* AMP controllers do not support SCO packets */
4067                 data->isoc = NULL;
4068         } else {
4069                 /* Interface orders are hardcoded in the specification */
4070                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4071                 data->isoc_ifnum = ifnum_base + 1;
4072         }
4073
4074         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4075             (id->driver_info & BTUSB_REALTEK)) {
4076                 hdev->setup = btrtl_setup_realtek;
4077                 hdev->shutdown = btrtl_shutdown_realtek;
4078                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4079
4080                 /* Realtek devices lose their updated firmware over global
4081                  * suspend that means host doesn't send SET_FEATURE
4082                  * (DEVICE_REMOTE_WAKEUP)
4083                  */
4084                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4085                 if (btusb_find_altsetting(data, 1))
4086                         set_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags);
4087                 else
4088                         bt_dev_err(hdev, "Device does not support ALT setting 1");
4089         }
4090
4091         if (!reset)
4092                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4093
4094         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4095                 if (!disable_scofix)
4096                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4097         }
4098
4099         if (id->driver_info & BTUSB_BROKEN_ISOC)
4100                 data->isoc = NULL;
4101
4102         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4103                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4104
4105         if (id->driver_info & BTUSB_VALID_LE_STATES)
4106                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4107
4108         if (id->driver_info & BTUSB_DIGIANSWER) {
4109                 data->cmdreq_type = USB_TYPE_VENDOR;
4110                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4111         }
4112
4113         if (id->driver_info & BTUSB_CSR) {
4114                 struct usb_device *udev = data->udev;
4115                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4116
4117                 /* Old firmware would otherwise execute USB reset */
4118                 if (bcdDevice < 0x117)
4119                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4120
4121                 /* This must be set first in case we disable it for fakes */
4122                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4123
4124                 /* Fake CSR devices with broken commands */
4125                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4126                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4127                         hdev->setup = btusb_setup_csr;
4128         }
4129
4130         if (id->driver_info & BTUSB_SNIFFER) {
4131                 struct usb_device *udev = data->udev;
4132
4133                 /* New sniffer firmware has crippled HCI interface */
4134                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4135                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4136         }
4137
4138         if (id->driver_info & BTUSB_INTEL_BOOT) {
4139                 /* A bug in the bootloader causes that interrupt interface is
4140                  * only enabled after receiving SetInterface(0, AltSetting=0).
4141                  */
4142                 err = usb_set_interface(data->udev, 0, 0);
4143                 if (err < 0) {
4144                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4145                         goto out_free_dev;
4146                 }
4147         }
4148
4149         if (data->isoc) {
4150                 err = usb_driver_claim_interface(&btusb_driver,
4151                                                  data->isoc, data);
4152                 if (err < 0)
4153                         goto out_free_dev;
4154         }
4155
4156         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4157                 if (!usb_driver_claim_interface(&btusb_driver,
4158                                                 data->diag, data))
4159                         __set_diag_interface(hdev);
4160                 else
4161                         data->diag = NULL;
4162         }
4163
4164         if (enable_autosuspend)
4165                 usb_enable_autosuspend(data->udev);
4166
4167         err = hci_register_dev(hdev);
4168         if (err < 0)
4169                 goto out_free_dev;
4170
4171         usb_set_intfdata(intf, data);
4172
4173         return 0;
4174
4175 out_free_dev:
4176         if (data->reset_gpio)
4177                 gpiod_put(data->reset_gpio);
4178         hci_free_dev(hdev);
4179         return err;
4180 }
4181
4182 static void btusb_disconnect(struct usb_interface *intf)
4183 {
4184         struct btusb_data *data = usb_get_intfdata(intf);
4185         struct hci_dev *hdev;
4186
4187         BT_DBG("intf %p", intf);
4188
4189         if (!data)
4190                 return;
4191
4192         hdev = data->hdev;
4193         usb_set_intfdata(data->intf, NULL);
4194
4195         if (data->isoc)
4196                 usb_set_intfdata(data->isoc, NULL);
4197
4198         if (data->diag)
4199                 usb_set_intfdata(data->diag, NULL);
4200
4201         hci_unregister_dev(hdev);
4202
4203         if (intf == data->intf) {
4204                 if (data->isoc)
4205                         usb_driver_release_interface(&btusb_driver, data->isoc);
4206                 if (data->diag)
4207                         usb_driver_release_interface(&btusb_driver, data->diag);
4208         } else if (intf == data->isoc) {
4209                 if (data->diag)
4210                         usb_driver_release_interface(&btusb_driver, data->diag);
4211                 usb_driver_release_interface(&btusb_driver, data->intf);
4212         } else if (intf == data->diag) {
4213                 usb_driver_release_interface(&btusb_driver, data->intf);
4214                 if (data->isoc)
4215                         usb_driver_release_interface(&btusb_driver, data->isoc);
4216         }
4217
4218         if (data->oob_wake_irq)
4219                 device_init_wakeup(&data->udev->dev, false);
4220
4221         if (data->reset_gpio)
4222                 gpiod_put(data->reset_gpio);
4223
4224         hci_free_dev(hdev);
4225 }
4226
4227 #ifdef CONFIG_PM
4228 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4229 {
4230         struct btusb_data *data = usb_get_intfdata(intf);
4231
4232         BT_DBG("intf %p", intf);
4233
4234         if (data->suspend_count++)
4235                 return 0;
4236
4237         spin_lock_irq(&data->txlock);
4238         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4239                 set_bit(BTUSB_SUSPENDING, &data->flags);
4240                 spin_unlock_irq(&data->txlock);
4241         } else {
4242                 spin_unlock_irq(&data->txlock);
4243                 data->suspend_count--;
4244                 return -EBUSY;
4245         }
4246
4247         cancel_work_sync(&data->work);
4248
4249         btusb_stop_traffic(data);
4250         usb_kill_anchored_urbs(&data->tx_anchor);
4251
4252         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4253                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4254                 enable_irq_wake(data->oob_wake_irq);
4255                 enable_irq(data->oob_wake_irq);
4256         }
4257
4258         /* For global suspend, Realtek devices lose the loaded fw
4259          * in them. But for autosuspend, firmware should remain.
4260          * Actually, it depends on whether the usb host sends
4261          * set feature (enable wakeup) or not.
4262          */
4263         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4264                 if (PMSG_IS_AUTO(message) &&
4265                     device_can_wakeup(&data->udev->dev))
4266                         data->udev->do_remote_wakeup = 1;
4267                 else if (!PMSG_IS_AUTO(message))
4268                         data->udev->reset_resume = 1;
4269         }
4270
4271         return 0;
4272 }
4273
4274 static void play_deferred(struct btusb_data *data)
4275 {
4276         struct urb *urb;
4277         int err;
4278
4279         while ((urb = usb_get_from_anchor(&data->deferred))) {
4280                 usb_anchor_urb(urb, &data->tx_anchor);
4281
4282                 err = usb_submit_urb(urb, GFP_ATOMIC);
4283                 if (err < 0) {
4284                         if (err != -EPERM && err != -ENODEV)
4285                                 BT_ERR("%s urb %p submission failed (%d)",
4286                                        data->hdev->name, urb, -err);
4287                         kfree(urb->setup_packet);
4288                         usb_unanchor_urb(urb);
4289                         usb_free_urb(urb);
4290                         break;
4291                 }
4292
4293                 data->tx_in_flight++;
4294                 usb_free_urb(urb);
4295         }
4296
4297         /* Cleanup the rest deferred urbs. */
4298         while ((urb = usb_get_from_anchor(&data->deferred))) {
4299                 kfree(urb->setup_packet);
4300                 usb_free_urb(urb);
4301         }
4302 }
4303
4304 static int btusb_resume(struct usb_interface *intf)
4305 {
4306         struct btusb_data *data = usb_get_intfdata(intf);
4307         struct hci_dev *hdev = data->hdev;
4308         int err = 0;
4309
4310         BT_DBG("intf %p", intf);
4311
4312         if (--data->suspend_count)
4313                 return 0;
4314
4315         /* Disable only if not already disabled (keep it balanced) */
4316         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4317                 disable_irq(data->oob_wake_irq);
4318                 disable_irq_wake(data->oob_wake_irq);
4319         }
4320
4321         if (!test_bit(HCI_RUNNING, &hdev->flags))
4322                 goto done;
4323
4324         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4325                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4326                 if (err < 0) {
4327                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4328                         goto failed;
4329                 }
4330         }
4331
4332         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4333                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4334                 if (err < 0) {
4335                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4336                         goto failed;
4337                 }
4338
4339                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4340         }
4341
4342         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4343                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4344                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4345                 else
4346                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4347         }
4348
4349         spin_lock_irq(&data->txlock);
4350         play_deferred(data);
4351         clear_bit(BTUSB_SUSPENDING, &data->flags);
4352         spin_unlock_irq(&data->txlock);
4353         schedule_work(&data->work);
4354
4355         return 0;
4356
4357 failed:
4358         usb_scuttle_anchored_urbs(&data->deferred);
4359 done:
4360         spin_lock_irq(&data->txlock);
4361         clear_bit(BTUSB_SUSPENDING, &data->flags);
4362         spin_unlock_irq(&data->txlock);
4363
4364         return err;
4365 }
4366 #endif
4367
4368 static struct usb_driver btusb_driver = {
4369         .name           = "btusb",
4370         .probe          = btusb_probe,
4371         .disconnect     = btusb_disconnect,
4372 #ifdef CONFIG_PM
4373         .suspend        = btusb_suspend,
4374         .resume         = btusb_resume,
4375 #endif
4376         .id_table       = btusb_table,
4377         .supports_autosuspend = 1,
4378         .disable_hub_initiated_lpm = 1,
4379 };
4380
4381 module_usb_driver(btusb_driver);
4382
4383 module_param(disable_scofix, bool, 0644);
4384 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4385
4386 module_param(force_scofix, bool, 0644);
4387 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4388
4389 module_param(enable_autosuspend, bool, 0644);
4390 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4391
4392 module_param(reset, bool, 0644);
4393 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4394
4395 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4396 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4397 MODULE_VERSION(VERSION);
4398 MODULE_LICENSE("GPL");