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
  62 static const struct usb_device_id btusb_table[] = {
  63         /* Generic Bluetooth USB device */
  64         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  65
  66         /* Generic Bluetooth AMP device */
  67         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  68
  69         /* Generic Bluetooth USB interface */
  70         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  71
  72         /* Apple-specific (Broadcom) devices */
  73         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  74           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  75
  76         /* MediaTek MT76x0E */
  77         { USB_DEVICE(0x0e8d, 0x763f) },
  78
  79         /* Broadcom SoftSailing reporting vendor specific */
  80         { USB_DEVICE(0x0a5c, 0x21e1) },
  81
  82         /* Apple MacBookPro 7,1 */
  83         { USB_DEVICE(0x05ac, 0x8213) },
  84
  85         /* Apple iMac11,1 */
  86         { USB_DEVICE(0x05ac, 0x8215) },
  87
  88         /* Apple MacBookPro6,2 */
  89         { USB_DEVICE(0x05ac, 0x8218) },
  90
  91         /* Apple MacBookAir3,1, MacBookAir3,2 */
  92         { USB_DEVICE(0x05ac, 0x821b) },
  93
  94         /* Apple MacBookAir4,1 */
  95         { USB_DEVICE(0x05ac, 0x821f) },
  96
  97         /* Apple MacBookPro8,2 */
  98         { USB_DEVICE(0x05ac, 0x821a) },
  99
 100         /* Apple MacMini5,1 */
 101         { USB_DEVICE(0x05ac, 0x8281) },
 102
 103         /* AVM BlueFRITZ! USB v2.0 */
 104         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 105
 106         /* Bluetooth Ultraport Module from IBM */
 107         { USB_DEVICE(0x04bf, 0x030a) },
 108
 109         /* ALPS Modules with non-standard id */
 110         { USB_DEVICE(0x044e, 0x3001) },
 111         { USB_DEVICE(0x044e, 0x3002) },
 112
 113         /* Ericsson with non-standard id */
 114         { USB_DEVICE(0x0bdb, 0x1002) },
 115
 116         /* Canyon CN-BTU1 with HID interfaces */
 117         { USB_DEVICE(0x0c10, 0x0000) },
 118
 119         /* Broadcom BCM20702A0 */
 120         { USB_DEVICE(0x413c, 0x8197) },
 121
 122         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 123         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 124
 125         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 127           .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM920703 (HTC Vive) */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Foxconn - Hon Hai */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Lite-On Technology - Broadcom based */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Broadcom devices with vendor specific id */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* ASUSTek Computer - Broadcom based */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Belkin F8065bf - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* IMC Networks - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* Dell Computer - Broadcom based  */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Toshiba Corp - Broadcom based */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* Intel Bluetooth USB Bootloader (RAM module) */
 166         { USB_DEVICE(0x8087, 0x0a5a),
 167           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 168
 169         { }     /* Terminating entry */
 170 };
 171
 172 MODULE_DEVICE_TABLE(usb, btusb_table);
 173
 174 static const struct usb_device_id blacklist_table[] = {
 175         /* CSR BlueCore devices */
 176         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 177
 178         /* Broadcom BCM2033 without firmware */
 179         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 180
 181         /* Broadcom BCM2045 devices */
 182         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 183
 184         /* Atheros 3011 with sflash firmware */
 185         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 192
 193         /* Atheros AR9285 Malbec with sflash firmware */
 194         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 195
 196         /* Atheros 3012 with sflash firmware */
 197         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 247
 248         /* Atheros AR5BBU12 with sflash firmware */
 249         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 250
 251         /* Atheros AR5BBU12 with sflash firmware */
 252         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 254
 255         /* QCA ROME chipset */
 256         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 274
 275         /* Broadcom BCM2035 */
 276         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 277         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 278         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 279
 280         /* Broadcom BCM2045 */
 281         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 282         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 283
 284         /* IBM/Lenovo ThinkPad with Broadcom chip */
 285         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 286         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* HP laptop with Broadcom chip */
 289         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* Dell laptop with Broadcom chip */
 292         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 293
 294         /* Dell Wireless 370 and 410 devices */
 295         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 296         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 297
 298         /* Belkin F8T012 and F8T013 devices */
 299         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 300         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Asus WL-BTD202 device */
 303         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Kensington Bluetooth USB adapter */
 306         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 307
 308         /* RTX Telecom based adapters with buggy SCO support */
 309         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 310         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 311
 312         /* CONWISE Technology based adapters with buggy SCO support */
 313         { USB_DEVICE(0x0e5e, 0x6622),
 314           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 315
 316         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 317         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 318
 319         /* Digianswer devices */
 320         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 321         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 322
 323         /* CSR BlueCore Bluetooth Sniffer */
 324         { USB_DEVICE(0x0a12, 0x0002),
 325           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 326
 327         /* Frontline ComProbe Bluetooth Sniffer */
 328         { USB_DEVICE(0x16d3, 0x0002),
 329           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 330
 331         /* Marvell Bluetooth devices */
 332         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 333         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 334         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 335
 336         /* Intel Bluetooth devices */
 337         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 338                                                      BTUSB_WIDEBAND_SPEECH },
 339         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 340                                                      BTUSB_WIDEBAND_SPEECH },
 341         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 342                                                      BTUSB_WIDEBAND_SPEECH },
 343         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 344         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 345         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 346         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 347                                                      BTUSB_WIDEBAND_SPEECH },
 348         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 349                                                      BTUSB_WIDEBAND_SPEECH },
 350         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 351                                                      BTUSB_WIDEBAND_SPEECH },
 352
 353         /* Other Intel Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_IGNORE },
 356
 357         /* Realtek Bluetooth devices */
 358         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 359           .driver_info = BTUSB_REALTEK },
 360
 361         /* MediaTek Bluetooth devices */
 362         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 363           .driver_info = BTUSB_MEDIATEK },
 364
 365         /* Additional Realtek 8723AE Bluetooth devices */
 366         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 368
 369         /* Additional Realtek 8723BE Bluetooth devices */
 370         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 375         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 376
 377         /* Additional Realtek 8723BU Bluetooth devices */
 378         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 379
 380         /* Additional Realtek 8723DE Bluetooth devices */
 381         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 382         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 383
 384         /* Additional Realtek 8821AE Bluetooth devices */
 385         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 389         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 390
 391         /* Additional Realtek 8822BE Bluetooth devices */
 392         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 393         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 394
 395         /* Additional Realtek 8822CE Bluetooth devices */
 396         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 397         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 398
 399         /* Silicon Wave based devices */
 400         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 401
 402         { }     /* Terminating entry */
 403 };
 404
 405 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 406  * this is a problem with the platform (likely shutting off all power) not with
 407  * the module itself. So we use a DMI list to match known broken platforms.
 408  */
 409 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 410         {
 411                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 412                 .matches = {
 413                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 414                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 415                 },
 416         },
 417         {
 418                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 419                 .matches = {
 420                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 421                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 422                 },
 423         },
 424         {
 425                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 426                 .matches = {
 427                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 428                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 429                 },
 430         },
 431         {}
 432 };
 433
 434 #define BTUSB_MAX_ISOC_FRAMES   10
 435
 436 #define BTUSB_INTR_RUNNING      0
 437 #define BTUSB_BULK_RUNNING      1
 438 #define BTUSB_ISOC_RUNNING      2
 439 #define BTUSB_SUSPENDING        3
 440 #define BTUSB_DID_ISO_RESUME    4
 441 #define BTUSB_BOOTLOADER        5
 442 #define BTUSB_DOWNLOADING       6
 443 #define BTUSB_FIRMWARE_LOADED   7
 444 #define BTUSB_FIRMWARE_FAILED   8
 445 #define BTUSB_BOOTING           9
 446 #define BTUSB_DIAG_RUNNING      10
 447 #define BTUSB_OOB_WAKE_ENABLED  11
 448 #define BTUSB_HW_RESET_ACTIVE   12
 449 #define BTUSB_TX_WAIT_VND_EVT   13
 450 #define BTUSB_WAKEUP_DISABLE    14
 451
 452 struct btusb_data {
 453         struct hci_dev       *hdev;
 454         struct usb_device    *udev;
 455         struct usb_interface *intf;
 456         struct usb_interface *isoc;
 457         struct usb_interface *diag;
 458         unsigned isoc_ifnum;
 459
 460         unsigned long flags;
 461
 462         struct work_struct work;
 463         struct work_struct waker;
 464
 465         struct usb_anchor deferred;
 466         struct usb_anchor tx_anchor;
 467         int tx_in_flight;
 468         spinlock_t txlock;
 469
 470         struct usb_anchor intr_anchor;
 471         struct usb_anchor bulk_anchor;
 472         struct usb_anchor isoc_anchor;
 473         struct usb_anchor diag_anchor;
 474         struct usb_anchor ctrl_anchor;
 475         spinlock_t rxlock;
 476
 477         struct sk_buff *evt_skb;
 478         struct sk_buff *acl_skb;
 479         struct sk_buff *sco_skb;
 480
 481         struct usb_endpoint_descriptor *intr_ep;
 482         struct usb_endpoint_descriptor *bulk_tx_ep;
 483         struct usb_endpoint_descriptor *bulk_rx_ep;
 484         struct usb_endpoint_descriptor *isoc_tx_ep;
 485         struct usb_endpoint_descriptor *isoc_rx_ep;
 486         struct usb_endpoint_descriptor *diag_tx_ep;
 487         struct usb_endpoint_descriptor *diag_rx_ep;
 488
 489         struct gpio_desc *reset_gpio;
 490
 491         __u8 cmdreq_type;
 492         __u8 cmdreq;
 493
 494         unsigned int sco_num;
 495         unsigned int air_mode;
 496         bool usb_alt6_packet_flow;
 497         int isoc_altsetting;
 498         int suspend_count;
 499
 500         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 501         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 502
 503         int (*setup_on_usb)(struct hci_dev *hdev);
 504
 505         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 506         unsigned cmd_timeout_cnt;
 507 };
 508
 509
 510 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 511 {
 512         struct btusb_data *data = hci_get_drvdata(hdev);
 513         struct gpio_desc *reset_gpio = data->reset_gpio;
 514
 515         if (++data->cmd_timeout_cnt < 5)
 516                 return;
 517
 518         if (!reset_gpio) {
 519                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 520                 return;
 521         }
 522
 523         /*
 524          * Toggle the hard reset line if the platform provides one. The reset
 525          * is going to yank the device off the USB and then replug. So doing
 526          * once is enough. The cleanup is handled correctly on the way out
 527          * (standard USB disconnect), and the new device is detected cleanly
 528          * and bound to the driver again like it should be.
 529          */
 530         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 531                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 532                 return;
 533         }
 534
 535         bt_dev_err(hdev, "Initiating HW reset via gpio");
 536         gpiod_set_value_cansleep(reset_gpio, 1);
 537         msleep(100);
 538         gpiod_set_value_cansleep(reset_gpio, 0);
 539 }
 540
 541 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 542 {
 543         struct btusb_data *data = hci_get_drvdata(hdev);
 544         struct gpio_desc *reset_gpio = data->reset_gpio;
 545
 546         if (++data->cmd_timeout_cnt < 5)
 547                 return;
 548
 549         if (!reset_gpio) {
 550                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 551                 return;
 552         }
 553
 554         /* Toggle the hard reset line. The Realtek device is going to
 555          * yank itself off the USB and then replug. The cleanup is handled
 556          * correctly on the way out (standard USB disconnect), and the new
 557          * device is detected cleanly and bound to the driver again like
 558          * it should be.
 559          */
 560         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 561                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 562                 return;
 563         }
 564
 565         bt_dev_err(hdev, "Reset Realtek device via gpio");
 566         gpiod_set_value_cansleep(reset_gpio, 1);
 567         msleep(200);
 568         gpiod_set_value_cansleep(reset_gpio, 0);
 569 }
 570
 571 static inline void btusb_free_frags(struct btusb_data *data)
 572 {
 573         unsigned long flags;
 574
 575         spin_lock_irqsave(&data->rxlock, flags);
 576
 577         kfree_skb(data->evt_skb);
 578         data->evt_skb = NULL;
 579
 580         kfree_skb(data->acl_skb);
 581         data->acl_skb = NULL;
 582
 583         kfree_skb(data->sco_skb);
 584         data->sco_skb = NULL;
 585
 586         spin_unlock_irqrestore(&data->rxlock, flags);
 587 }
 588
 589 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 590 {
 591         struct sk_buff *skb;
 592         unsigned long flags;
 593         int err = 0;
 594
 595         spin_lock_irqsave(&data->rxlock, flags);
 596         skb = data->evt_skb;
 597
 598         while (count) {
 599                 int len;
 600
 601                 if (!skb) {
 602                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 603                         if (!skb) {
 604                                 err = -ENOMEM;
 605                                 break;
 606                         }
 607
 608                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 609                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 610                 }
 611
 612                 len = min_t(uint, hci_skb_expect(skb), count);
 613                 skb_put_data(skb, buffer, len);
 614
 615                 count -= len;
 616                 buffer += len;
 617                 hci_skb_expect(skb) -= len;
 618
 619                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 620                         /* Complete event header */
 621                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 622
 623                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 624                                 kfree_skb(skb);
 625                                 skb = NULL;
 626
 627                                 err = -EILSEQ;
 628                                 break;
 629                         }
 630                 }
 631
 632                 if (!hci_skb_expect(skb)) {
 633                         /* Complete frame */
 634                         data->recv_event(data->hdev, skb);
 635                         skb = NULL;
 636                 }
 637         }
 638
 639         data->evt_skb = skb;
 640         spin_unlock_irqrestore(&data->rxlock, flags);
 641
 642         return err;
 643 }
 644
 645 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 646 {
 647         struct sk_buff *skb;
 648         unsigned long flags;
 649         int err = 0;
 650
 651         spin_lock_irqsave(&data->rxlock, flags);
 652         skb = data->acl_skb;
 653
 654         while (count) {
 655                 int len;
 656
 657                 if (!skb) {
 658                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 659                         if (!skb) {
 660                                 err = -ENOMEM;
 661                                 break;
 662                         }
 663
 664                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 665                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 666                 }
 667
 668                 len = min_t(uint, hci_skb_expect(skb), count);
 669                 skb_put_data(skb, buffer, len);
 670
 671                 count -= len;
 672                 buffer += len;
 673                 hci_skb_expect(skb) -= len;
 674
 675                 if (skb->len == HCI_ACL_HDR_SIZE) {
 676                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 677
 678                         /* Complete ACL header */
 679                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 680
 681                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 682                                 kfree_skb(skb);
 683                                 skb = NULL;
 684
 685                                 err = -EILSEQ;
 686                                 break;
 687                         }
 688                 }
 689
 690                 if (!hci_skb_expect(skb)) {
 691                         /* Complete frame */
 692                         hci_recv_frame(data->hdev, skb);
 693                         skb = NULL;
 694                 }
 695         }
 696
 697         data->acl_skb = skb;
 698         spin_unlock_irqrestore(&data->rxlock, flags);
 699
 700         return err;
 701 }
 702
 703 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 704 {
 705         struct sk_buff *skb;
 706         unsigned long flags;
 707         int err = 0;
 708
 709         spin_lock_irqsave(&data->rxlock, flags);
 710         skb = data->sco_skb;
 711
 712         while (count) {
 713                 int len;
 714
 715                 if (!skb) {
 716                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 717                         if (!skb) {
 718                                 err = -ENOMEM;
 719                                 break;
 720                         }
 721
 722                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 723                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 724                 }
 725
 726                 len = min_t(uint, hci_skb_expect(skb), count);
 727                 skb_put_data(skb, buffer, len);
 728
 729                 count -= len;
 730                 buffer += len;
 731                 hci_skb_expect(skb) -= len;
 732
 733                 if (skb->len == HCI_SCO_HDR_SIZE) {
 734                         /* Complete SCO header */
 735                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 736
 737                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 738                                 kfree_skb(skb);
 739                                 skb = NULL;
 740
 741                                 err = -EILSEQ;
 742                                 break;
 743                         }
 744                 }
 745
 746                 if (!hci_skb_expect(skb)) {
 747                         /* Complete frame */
 748                         hci_recv_frame(data->hdev, skb);
 749                         skb = NULL;
 750                 }
 751         }
 752
 753         data->sco_skb = skb;
 754         spin_unlock_irqrestore(&data->rxlock, flags);
 755
 756         return err;
 757 }
 758
 759 static void btusb_intr_complete(struct urb *urb)
 760 {
 761         struct hci_dev *hdev = urb->context;
 762         struct btusb_data *data = hci_get_drvdata(hdev);
 763         int err;
 764
 765         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 766                urb->actual_length);
 767
 768         if (!test_bit(HCI_RUNNING, &hdev->flags))
 769                 return;
 770
 771         if (urb->status == 0) {
 772                 hdev->stat.byte_rx += urb->actual_length;
 773
 774                 if (btusb_recv_intr(data, urb->transfer_buffer,
 775                                     urb->actual_length) < 0) {
 776                         bt_dev_err(hdev, "corrupted event packet");
 777                         hdev->stat.err_rx++;
 778                 }
 779         } else if (urb->status == -ENOENT) {
 780                 /* Avoid suspend failed when usb_kill_urb */
 781                 return;
 782         }
 783
 784         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 785                 return;
 786
 787         usb_mark_last_busy(data->udev);
 788         usb_anchor_urb(urb, &data->intr_anchor);
 789
 790         err = usb_submit_urb(urb, GFP_ATOMIC);
 791         if (err < 0) {
 792                 /* -EPERM: urb is being killed;
 793                  * -ENODEV: device got disconnected
 794                  */
 795                 if (err != -EPERM && err != -ENODEV)
 796                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 797                                    urb, -err);
 798                 usb_unanchor_urb(urb);
 799         }
 800 }
 801
 802 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 803 {
 804         struct btusb_data *data = hci_get_drvdata(hdev);
 805         struct urb *urb;
 806         unsigned char *buf;
 807         unsigned int pipe;
 808         int err, size;
 809
 810         BT_DBG("%s", hdev->name);
 811
 812         if (!data->intr_ep)
 813                 return -ENODEV;
 814
 815         urb = usb_alloc_urb(0, mem_flags);
 816         if (!urb)
 817                 return -ENOMEM;
 818
 819         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 820
 821         buf = kmalloc(size, mem_flags);
 822         if (!buf) {
 823                 usb_free_urb(urb);
 824                 return -ENOMEM;
 825         }
 826
 827         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 828
 829         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 830                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 831
 832         urb->transfer_flags |= URB_FREE_BUFFER;
 833
 834         usb_anchor_urb(urb, &data->intr_anchor);
 835
 836         err = usb_submit_urb(urb, mem_flags);
 837         if (err < 0) {
 838                 if (err != -EPERM && err != -ENODEV)
 839                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 840                                    urb, -err);
 841                 usb_unanchor_urb(urb);
 842         }
 843
 844         usb_free_urb(urb);
 845
 846         return err;
 847 }
 848
 849 static void btusb_bulk_complete(struct urb *urb)
 850 {
 851         struct hci_dev *hdev = urb->context;
 852         struct btusb_data *data = hci_get_drvdata(hdev);
 853         int err;
 854
 855         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 856                urb->actual_length);
 857
 858         if (!test_bit(HCI_RUNNING, &hdev->flags))
 859                 return;
 860
 861         if (urb->status == 0) {
 862                 hdev->stat.byte_rx += urb->actual_length;
 863
 864                 if (data->recv_bulk(data, urb->transfer_buffer,
 865                                     urb->actual_length) < 0) {
 866                         bt_dev_err(hdev, "corrupted ACL packet");
 867                         hdev->stat.err_rx++;
 868                 }
 869         } else if (urb->status == -ENOENT) {
 870                 /* Avoid suspend failed when usb_kill_urb */
 871                 return;
 872         }
 873
 874         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 875                 return;
 876
 877         usb_anchor_urb(urb, &data->bulk_anchor);
 878         usb_mark_last_busy(data->udev);
 879
 880         err = usb_submit_urb(urb, GFP_ATOMIC);
 881         if (err < 0) {
 882                 /* -EPERM: urb is being killed;
 883                  * -ENODEV: device got disconnected
 884                  */
 885                 if (err != -EPERM && err != -ENODEV)
 886                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 887                                    urb, -err);
 888                 usb_unanchor_urb(urb);
 889         }
 890 }
 891
 892 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 893 {
 894         struct btusb_data *data = hci_get_drvdata(hdev);
 895         struct urb *urb;
 896         unsigned char *buf;
 897         unsigned int pipe;
 898         int err, size = HCI_MAX_FRAME_SIZE;
 899
 900         BT_DBG("%s", hdev->name);
 901
 902         if (!data->bulk_rx_ep)
 903                 return -ENODEV;
 904
 905         urb = usb_alloc_urb(0, mem_flags);
 906         if (!urb)
 907                 return -ENOMEM;
 908
 909         buf = kmalloc(size, mem_flags);
 910         if (!buf) {
 911                 usb_free_urb(urb);
 912                 return -ENOMEM;
 913         }
 914
 915         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 916
 917         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 918                           btusb_bulk_complete, hdev);
 919
 920         urb->transfer_flags |= URB_FREE_BUFFER;
 921
 922         usb_mark_last_busy(data->udev);
 923         usb_anchor_urb(urb, &data->bulk_anchor);
 924
 925         err = usb_submit_urb(urb, mem_flags);
 926         if (err < 0) {
 927                 if (err != -EPERM && err != -ENODEV)
 928                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 929                                    urb, -err);
 930                 usb_unanchor_urb(urb);
 931         }
 932
 933         usb_free_urb(urb);
 934
 935         return err;
 936 }
 937
 938 static void btusb_isoc_complete(struct urb *urb)
 939 {
 940         struct hci_dev *hdev = urb->context;
 941         struct btusb_data *data = hci_get_drvdata(hdev);
 942         int i, err;
 943
 944         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 945                urb->actual_length);
 946
 947         if (!test_bit(HCI_RUNNING, &hdev->flags))
 948                 return;
 949
 950         if (urb->status == 0) {
 951                 for (i = 0; i < urb->number_of_packets; i++) {
 952                         unsigned int offset = urb->iso_frame_desc[i].offset;
 953                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 954
 955                         if (urb->iso_frame_desc[i].status)
 956                                 continue;
 957
 958                         hdev->stat.byte_rx += length;
 959
 960                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 961                                             length) < 0) {
 962                                 bt_dev_err(hdev, "corrupted SCO packet");
 963                                 hdev->stat.err_rx++;
 964                         }
 965                 }
 966         } else if (urb->status == -ENOENT) {
 967                 /* Avoid suspend failed when usb_kill_urb */
 968                 return;
 969         }
 970
 971         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 972                 return;
 973
 974         usb_anchor_urb(urb, &data->isoc_anchor);
 975
 976         err = usb_submit_urb(urb, GFP_ATOMIC);
 977         if (err < 0) {
 978                 /* -EPERM: urb is being killed;
 979                  * -ENODEV: device got disconnected
 980                  */
 981                 if (err != -EPERM && err != -ENODEV)
 982                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 983                                    urb, -err);
 984                 usb_unanchor_urb(urb);
 985         }
 986 }
 987
 988 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
 989                                                int mtu, struct btusb_data *data)
 990 {
 991         int i, offset = 0;
 992         unsigned int interval;
 993
 994         BT_DBG("len %d mtu %d", len, mtu);
 995
 996         /* For mSBC ALT 6 setting the host will send the packet at continuous
 997          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
 998          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
 999          * To maintain the rate we send 63bytes of usb packets alternatively for
1000          * 7ms and 8ms to maintain the rate as 7.5ms.
1001          */
1002         if (data->usb_alt6_packet_flow) {
1003                 interval = 7;
1004                 data->usb_alt6_packet_flow = false;
1005         } else {
1006                 interval = 6;
1007                 data->usb_alt6_packet_flow = true;
1008         }
1009
1010         for (i = 0; i < interval; i++) {
1011                 urb->iso_frame_desc[i].offset = offset;
1012                 urb->iso_frame_desc[i].length = offset;
1013         }
1014
1015         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1016                 urb->iso_frame_desc[i].offset = offset;
1017                 urb->iso_frame_desc[i].length = len;
1018                 i++;
1019         }
1020
1021         urb->number_of_packets = i;
1022 }
1023
1024 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1025 {
1026         int i, offset = 0;
1027
1028         BT_DBG("len %d mtu %d", len, mtu);
1029
1030         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1031                                         i++, offset += mtu, len -= mtu) {
1032                 urb->iso_frame_desc[i].offset = offset;
1033                 urb->iso_frame_desc[i].length = mtu;
1034         }
1035
1036         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1037                 urb->iso_frame_desc[i].offset = offset;
1038                 urb->iso_frame_desc[i].length = len;
1039                 i++;
1040         }
1041
1042         urb->number_of_packets = i;
1043 }
1044
1045 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1046 {
1047         struct btusb_data *data = hci_get_drvdata(hdev);
1048         struct urb *urb;
1049         unsigned char *buf;
1050         unsigned int pipe;
1051         int err, size;
1052
1053         BT_DBG("%s", hdev->name);
1054
1055         if (!data->isoc_rx_ep)
1056                 return -ENODEV;
1057
1058         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1059         if (!urb)
1060                 return -ENOMEM;
1061
1062         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1063                                                 BTUSB_MAX_ISOC_FRAMES;
1064
1065         buf = kmalloc(size, mem_flags);
1066         if (!buf) {
1067                 usb_free_urb(urb);
1068                 return -ENOMEM;
1069         }
1070
1071         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1072
1073         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1074                          hdev, data->isoc_rx_ep->bInterval);
1075
1076         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1077
1078         __fill_isoc_descriptor(urb, size,
1079                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1080
1081         usb_anchor_urb(urb, &data->isoc_anchor);
1082
1083         err = usb_submit_urb(urb, mem_flags);
1084         if (err < 0) {
1085                 if (err != -EPERM && err != -ENODEV)
1086                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1087                                    urb, -err);
1088                 usb_unanchor_urb(urb);
1089         }
1090
1091         usb_free_urb(urb);
1092
1093         return err;
1094 }
1095
1096 static void btusb_diag_complete(struct urb *urb)
1097 {
1098         struct hci_dev *hdev = urb->context;
1099         struct btusb_data *data = hci_get_drvdata(hdev);
1100         int err;
1101
1102         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1103                urb->actual_length);
1104
1105         if (urb->status == 0) {
1106                 struct sk_buff *skb;
1107
1108                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1109                 if (skb) {
1110                         skb_put_data(skb, urb->transfer_buffer,
1111                                      urb->actual_length);
1112                         hci_recv_diag(hdev, skb);
1113                 }
1114         } else if (urb->status == -ENOENT) {
1115                 /* Avoid suspend failed when usb_kill_urb */
1116                 return;
1117         }
1118
1119         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1120                 return;
1121
1122         usb_anchor_urb(urb, &data->diag_anchor);
1123         usb_mark_last_busy(data->udev);
1124
1125         err = usb_submit_urb(urb, GFP_ATOMIC);
1126         if (err < 0) {
1127                 /* -EPERM: urb is being killed;
1128                  * -ENODEV: device got disconnected
1129                  */
1130                 if (err != -EPERM && err != -ENODEV)
1131                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1132                                    urb, -err);
1133                 usb_unanchor_urb(urb);
1134         }
1135 }
1136
1137 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1138 {
1139         struct btusb_data *data = hci_get_drvdata(hdev);
1140         struct urb *urb;
1141         unsigned char *buf;
1142         unsigned int pipe;
1143         int err, size = HCI_MAX_FRAME_SIZE;
1144
1145         BT_DBG("%s", hdev->name);
1146
1147         if (!data->diag_rx_ep)
1148                 return -ENODEV;
1149
1150         urb = usb_alloc_urb(0, mem_flags);
1151         if (!urb)
1152                 return -ENOMEM;
1153
1154         buf = kmalloc(size, mem_flags);
1155         if (!buf) {
1156                 usb_free_urb(urb);
1157                 return -ENOMEM;
1158         }
1159
1160         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1161
1162         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1163                           btusb_diag_complete, hdev);
1164
1165         urb->transfer_flags |= URB_FREE_BUFFER;
1166
1167         usb_mark_last_busy(data->udev);
1168         usb_anchor_urb(urb, &data->diag_anchor);
1169
1170         err = usb_submit_urb(urb, mem_flags);
1171         if (err < 0) {
1172                 if (err != -EPERM && err != -ENODEV)
1173                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1174                                    urb, -err);
1175                 usb_unanchor_urb(urb);
1176         }
1177
1178         usb_free_urb(urb);
1179
1180         return err;
1181 }
1182
1183 static void btusb_tx_complete(struct urb *urb)
1184 {
1185         struct sk_buff *skb = urb->context;
1186         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1187         struct btusb_data *data = hci_get_drvdata(hdev);
1188         unsigned long flags;
1189
1190         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1191                urb->actual_length);
1192
1193         if (!test_bit(HCI_RUNNING, &hdev->flags))
1194                 goto done;
1195
1196         if (!urb->status)
1197                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1198         else
1199                 hdev->stat.err_tx++;
1200
1201 done:
1202         spin_lock_irqsave(&data->txlock, flags);
1203         data->tx_in_flight--;
1204         spin_unlock_irqrestore(&data->txlock, flags);
1205
1206         kfree(urb->setup_packet);
1207
1208         kfree_skb(skb);
1209 }
1210
1211 static void btusb_isoc_tx_complete(struct urb *urb)
1212 {
1213         struct sk_buff *skb = urb->context;
1214         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
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         kfree(urb->setup_packet);
1229
1230         kfree_skb(skb);
1231 }
1232
1233 static int btusb_open(struct hci_dev *hdev)
1234 {
1235         struct btusb_data *data = hci_get_drvdata(hdev);
1236         int err;
1237
1238         BT_DBG("%s", hdev->name);
1239
1240         err = usb_autopm_get_interface(data->intf);
1241         if (err < 0)
1242                 return err;
1243
1244         /* Patching USB firmware files prior to starting any URBs of HCI path
1245          * It is more safe to use USB bulk channel for downloading USB patch
1246          */
1247         if (data->setup_on_usb) {
1248                 err = data->setup_on_usb(hdev);
1249                 if (err < 0)
1250                         goto setup_fail;
1251         }
1252
1253         data->intf->needs_remote_wakeup = 1;
1254
1255         /* Disable device remote wakeup when host is suspended
1256          * For Realtek chips, global suspend without
1257          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1258          */
1259         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1260                 device_wakeup_disable(&data->udev->dev);
1261
1262         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1263                 goto done;
1264
1265         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1266         if (err < 0)
1267                 goto failed;
1268
1269         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1270         if (err < 0) {
1271                 usb_kill_anchored_urbs(&data->intr_anchor);
1272                 goto failed;
1273         }
1274
1275         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1276         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1277
1278         if (data->diag) {
1279                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1280                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1281         }
1282
1283 done:
1284         usb_autopm_put_interface(data->intf);
1285         return 0;
1286
1287 failed:
1288         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1289 setup_fail:
1290         usb_autopm_put_interface(data->intf);
1291         return err;
1292 }
1293
1294 static void btusb_stop_traffic(struct btusb_data *data)
1295 {
1296         usb_kill_anchored_urbs(&data->intr_anchor);
1297         usb_kill_anchored_urbs(&data->bulk_anchor);
1298         usb_kill_anchored_urbs(&data->isoc_anchor);
1299         usb_kill_anchored_urbs(&data->diag_anchor);
1300         usb_kill_anchored_urbs(&data->ctrl_anchor);
1301 }
1302
1303 static int btusb_close(struct hci_dev *hdev)
1304 {
1305         struct btusb_data *data = hci_get_drvdata(hdev);
1306         int err;
1307
1308         BT_DBG("%s", hdev->name);
1309
1310         cancel_work_sync(&data->work);
1311         cancel_work_sync(&data->waker);
1312
1313         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1314         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1315         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1316         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1317
1318         btusb_stop_traffic(data);
1319         btusb_free_frags(data);
1320
1321         err = usb_autopm_get_interface(data->intf);
1322         if (err < 0)
1323                 goto failed;
1324
1325         data->intf->needs_remote_wakeup = 0;
1326
1327         /* Enable remote wake up for auto-suspend */
1328         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1329                 data->intf->needs_remote_wakeup = 1;
1330
1331         usb_autopm_put_interface(data->intf);
1332
1333 failed:
1334         usb_scuttle_anchored_urbs(&data->deferred);
1335         return 0;
1336 }
1337
1338 static int btusb_flush(struct hci_dev *hdev)
1339 {
1340         struct btusb_data *data = hci_get_drvdata(hdev);
1341
1342         BT_DBG("%s", hdev->name);
1343
1344         usb_kill_anchored_urbs(&data->tx_anchor);
1345         btusb_free_frags(data);
1346
1347         return 0;
1348 }
1349
1350 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1351 {
1352         struct btusb_data *data = hci_get_drvdata(hdev);
1353         struct usb_ctrlrequest *dr;
1354         struct urb *urb;
1355         unsigned int pipe;
1356
1357         urb = usb_alloc_urb(0, GFP_KERNEL);
1358         if (!urb)
1359                 return ERR_PTR(-ENOMEM);
1360
1361         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1362         if (!dr) {
1363                 usb_free_urb(urb);
1364                 return ERR_PTR(-ENOMEM);
1365         }
1366
1367         dr->bRequestType = data->cmdreq_type;
1368         dr->bRequest     = data->cmdreq;
1369         dr->wIndex       = 0;
1370         dr->wValue       = 0;
1371         dr->wLength      = __cpu_to_le16(skb->len);
1372
1373         pipe = usb_sndctrlpipe(data->udev, 0x00);
1374
1375         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1376                              skb->data, skb->len, btusb_tx_complete, skb);
1377
1378         skb->dev = (void *)hdev;
1379
1380         return urb;
1381 }
1382
1383 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1384 {
1385         struct btusb_data *data = hci_get_drvdata(hdev);
1386         struct urb *urb;
1387         unsigned int pipe;
1388
1389         if (!data->bulk_tx_ep)
1390                 return ERR_PTR(-ENODEV);
1391
1392         urb = usb_alloc_urb(0, GFP_KERNEL);
1393         if (!urb)
1394                 return ERR_PTR(-ENOMEM);
1395
1396         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1397
1398         usb_fill_bulk_urb(urb, data->udev, pipe,
1399                           skb->data, skb->len, btusb_tx_complete, skb);
1400
1401         skb->dev = (void *)hdev;
1402
1403         return urb;
1404 }
1405
1406 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1407 {
1408         struct btusb_data *data = hci_get_drvdata(hdev);
1409         struct urb *urb;
1410         unsigned int pipe;
1411
1412         if (!data->isoc_tx_ep)
1413                 return ERR_PTR(-ENODEV);
1414
1415         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1416         if (!urb)
1417                 return ERR_PTR(-ENOMEM);
1418
1419         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1420
1421         usb_fill_int_urb(urb, data->udev, pipe,
1422                          skb->data, skb->len, btusb_isoc_tx_complete,
1423                          skb, data->isoc_tx_ep->bInterval);
1424
1425         urb->transfer_flags  = URB_ISO_ASAP;
1426
1427         if (data->isoc_altsetting == 6)
1428                 __fill_isoc_descriptor_msbc(urb, skb->len,
1429                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1430                                             data);
1431         else
1432                 __fill_isoc_descriptor(urb, skb->len,
1433                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1434         skb->dev = (void *)hdev;
1435
1436         return urb;
1437 }
1438
1439 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1440 {
1441         struct btusb_data *data = hci_get_drvdata(hdev);
1442         int err;
1443
1444         usb_anchor_urb(urb, &data->tx_anchor);
1445
1446         err = usb_submit_urb(urb, GFP_KERNEL);
1447         if (err < 0) {
1448                 if (err != -EPERM && err != -ENODEV)
1449                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1450                                    urb, -err);
1451                 kfree(urb->setup_packet);
1452                 usb_unanchor_urb(urb);
1453         } else {
1454                 usb_mark_last_busy(data->udev);
1455         }
1456
1457         usb_free_urb(urb);
1458         return err;
1459 }
1460
1461 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1462 {
1463         struct btusb_data *data = hci_get_drvdata(hdev);
1464         unsigned long flags;
1465         bool suspending;
1466
1467         spin_lock_irqsave(&data->txlock, flags);
1468         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1469         if (!suspending)
1470                 data->tx_in_flight++;
1471         spin_unlock_irqrestore(&data->txlock, flags);
1472
1473         if (!suspending)
1474                 return submit_tx_urb(hdev, urb);
1475
1476         usb_anchor_urb(urb, &data->deferred);
1477         schedule_work(&data->waker);
1478
1479         usb_free_urb(urb);
1480         return 0;
1481 }
1482
1483 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1484 {
1485         struct urb *urb;
1486
1487         BT_DBG("%s", hdev->name);
1488
1489         switch (hci_skb_pkt_type(skb)) {
1490         case HCI_COMMAND_PKT:
1491                 urb = alloc_ctrl_urb(hdev, skb);
1492                 if (IS_ERR(urb))
1493                         return PTR_ERR(urb);
1494
1495                 hdev->stat.cmd_tx++;
1496                 return submit_or_queue_tx_urb(hdev, urb);
1497
1498         case HCI_ACLDATA_PKT:
1499                 urb = alloc_bulk_urb(hdev, skb);
1500                 if (IS_ERR(urb))
1501                         return PTR_ERR(urb);
1502
1503                 hdev->stat.acl_tx++;
1504                 return submit_or_queue_tx_urb(hdev, urb);
1505
1506         case HCI_SCODATA_PKT:
1507                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1508                         return -ENODEV;
1509
1510                 urb = alloc_isoc_urb(hdev, skb);
1511                 if (IS_ERR(urb))
1512                         return PTR_ERR(urb);
1513
1514                 hdev->stat.sco_tx++;
1515                 return submit_tx_urb(hdev, urb);
1516         }
1517
1518         return -EILSEQ;
1519 }
1520
1521 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1522 {
1523         struct btusb_data *data = hci_get_drvdata(hdev);
1524
1525         BT_DBG("%s evt %d", hdev->name, evt);
1526
1527         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1528                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1529                 data->air_mode = evt;
1530                 schedule_work(&data->work);
1531         }
1532 }
1533
1534 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1535 {
1536         struct btusb_data *data = hci_get_drvdata(hdev);
1537         struct usb_interface *intf = data->isoc;
1538         struct usb_endpoint_descriptor *ep_desc;
1539         int i, err;
1540
1541         if (!data->isoc)
1542                 return -ENODEV;
1543
1544         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1545         if (err < 0) {
1546                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1547                 return err;
1548         }
1549
1550         data->isoc_altsetting = altsetting;
1551
1552         data->isoc_tx_ep = NULL;
1553         data->isoc_rx_ep = NULL;
1554
1555         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1556                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1557
1558                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1559                         data->isoc_tx_ep = ep_desc;
1560                         continue;
1561                 }
1562
1563                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1564                         data->isoc_rx_ep = ep_desc;
1565                         continue;
1566                 }
1567         }
1568
1569         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1570                 bt_dev_err(hdev, "invalid SCO descriptors");
1571                 return -ENODEV;
1572         }
1573
1574         return 0;
1575 }
1576
1577 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1578 {
1579         struct btusb_data *data = hci_get_drvdata(hdev);
1580         int err;
1581
1582         if (data->isoc_altsetting != new_alts) {
1583                 unsigned long flags;
1584
1585                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1586                 usb_kill_anchored_urbs(&data->isoc_anchor);
1587
1588                 /* When isochronous alternate setting needs to be
1589                  * changed, because SCO connection has been added
1590                  * or removed, a packet fragment may be left in the
1591                  * reassembling state. This could lead to wrongly
1592                  * assembled fragments.
1593                  *
1594                  * Clear outstanding fragment when selecting a new
1595                  * alternate setting.
1596                  */
1597                 spin_lock_irqsave(&data->rxlock, flags);
1598                 kfree_skb(data->sco_skb);
1599                 data->sco_skb = NULL;
1600                 spin_unlock_irqrestore(&data->rxlock, flags);
1601
1602                 err = __set_isoc_interface(hdev, new_alts);
1603                 if (err < 0)
1604                         return err;
1605         }
1606
1607         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1608                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1609                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1610                 else
1611                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1612         }
1613
1614         return 0;
1615 }
1616
1617 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1618                                                         int alt)
1619 {
1620         struct usb_interface *intf = data->isoc;
1621         int i;
1622
1623         BT_DBG("Looking for Alt no :%d", alt);
1624
1625         for (i = 0; i < intf->num_altsetting; i++) {
1626                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1627                         return &intf->altsetting[i];
1628         }
1629
1630         return NULL;
1631 }
1632
1633 static void btusb_work(struct work_struct *work)
1634 {
1635         struct btusb_data *data = container_of(work, struct btusb_data, work);
1636         struct hci_dev *hdev = data->hdev;
1637         int new_alts = 0;
1638         int err;
1639
1640         if (data->sco_num > 0) {
1641                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1642                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1643                         if (err < 0) {
1644                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1645                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1646                                 return;
1647                         }
1648
1649                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1650                 }
1651
1652                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1653                         if (hdev->voice_setting & 0x0020) {
1654                                 static const int alts[3] = { 2, 4, 5 };
1655
1656                                 new_alts = alts[data->sco_num - 1];
1657                         } else {
1658                                 new_alts = data->sco_num;
1659                         }
1660                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1661
1662                         data->usb_alt6_packet_flow = true;
1663
1664                         /* Check if Alt 6 is supported for Transparent audio */
1665                         if (btusb_find_altsetting(data, 6))
1666                                 new_alts = 6;
1667                         else
1668                                 bt_dev_err(hdev, "Device does not support ALT setting 6");
1669                 }
1670
1671                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1672                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1673         } else {
1674                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1675                 usb_kill_anchored_urbs(&data->isoc_anchor);
1676
1677                 __set_isoc_interface(hdev, 0);
1678                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1679                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1680         }
1681 }
1682
1683 static void btusb_waker(struct work_struct *work)
1684 {
1685         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1686         int err;
1687
1688         err = usb_autopm_get_interface(data->intf);
1689         if (err < 0)
1690                 return;
1691
1692         usb_autopm_put_interface(data->intf);
1693 }
1694
1695 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1696 {
1697         struct sk_buff *skb;
1698         u8 val = 0x00;
1699
1700         BT_DBG("%s", hdev->name);
1701
1702         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1703         if (IS_ERR(skb))
1704                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1705         else
1706                 kfree_skb(skb);
1707
1708         return 0;
1709 }
1710
1711 static int btusb_setup_csr(struct hci_dev *hdev)
1712 {
1713         struct hci_rp_read_local_version *rp;
1714         struct sk_buff *skb;
1715
1716         BT_DBG("%s", hdev->name);
1717
1718         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1719                              HCI_INIT_TIMEOUT);
1720         if (IS_ERR(skb)) {
1721                 int err = PTR_ERR(skb);
1722                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1723                 return err;
1724         }
1725
1726         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1727                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1728                 kfree_skb(skb);
1729                 return -EIO;
1730         }
1731
1732         rp = (struct hci_rp_read_local_version *)skb->data;
1733
1734         /* Detect controllers which aren't real CSR ones. */
1735         if (le16_to_cpu(rp->manufacturer) != 10 ||
1736             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1737                 /* Clear the reset quirk since this is not an actual
1738                  * early Bluetooth 1.1 device from CSR.
1739                  */
1740                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1741
1742                 /* These fake CSR controllers have all a broken
1743                  * stored link key handling and so just disable it.
1744                  */
1745                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1746         }
1747
1748         kfree_skb(skb);
1749
1750         return 0;
1751 }
1752
1753 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1754                                                        struct intel_version *ver)
1755 {
1756         const struct firmware *fw;
1757         char fwname[64];
1758         int ret;
1759
1760         snprintf(fwname, sizeof(fwname),
1761                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1762                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1763                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1764                  ver->fw_build_ww, ver->fw_build_yy);
1765
1766         ret = request_firmware(&fw, fwname, &hdev->dev);
1767         if (ret < 0) {
1768                 if (ret == -EINVAL) {
1769                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1770                                    ret);
1771                         return NULL;
1772                 }
1773
1774                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1775                            fwname, ret);
1776
1777                 /* If the correct firmware patch file is not found, use the
1778                  * default firmware patch file instead
1779                  */
1780                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1781                          ver->hw_platform, ver->hw_variant);
1782                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1783                         bt_dev_err(hdev, "failed to open default fw file: %s",
1784                                    fwname);
1785                         return NULL;
1786                 }
1787         }
1788
1789         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1790
1791         return fw;
1792 }
1793
1794 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1795                                       const struct firmware *fw,
1796                                       const u8 **fw_ptr, int *disable_patch)
1797 {
1798         struct sk_buff *skb;
1799         struct hci_command_hdr *cmd;
1800         const u8 *cmd_param;
1801         struct hci_event_hdr *evt = NULL;
1802         const u8 *evt_param = NULL;
1803         int remain = fw->size - (*fw_ptr - fw->data);
1804
1805         /* The first byte indicates the types of the patch command or event.
1806          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1807          * in the current firmware buffer doesn't start with 0x01 or
1808          * the size of remain buffer is smaller than HCI command header,
1809          * the firmware file is corrupted and it should stop the patching
1810          * process.
1811          */
1812         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1813                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1814                 return -EINVAL;
1815         }
1816         (*fw_ptr)++;
1817         remain--;
1818
1819         cmd = (struct hci_command_hdr *)(*fw_ptr);
1820         *fw_ptr += sizeof(*cmd);
1821         remain -= sizeof(*cmd);
1822
1823         /* Ensure that the remain firmware data is long enough than the length
1824          * of command parameter. If not, the firmware file is corrupted.
1825          */
1826         if (remain < cmd->plen) {
1827                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1828                 return -EFAULT;
1829         }
1830
1831         /* If there is a command that loads a patch in the firmware
1832          * file, then enable the patch upon success, otherwise just
1833          * disable the manufacturer mode, for example patch activation
1834          * is not required when the default firmware patch file is used
1835          * because there are no patch data to load.
1836          */
1837         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1838                 *disable_patch = 0;
1839
1840         cmd_param = *fw_ptr;
1841         *fw_ptr += cmd->plen;
1842         remain -= cmd->plen;
1843
1844         /* This reads the expected events when the above command is sent to the
1845          * device. Some vendor commands expects more than one events, for
1846          * example command status event followed by vendor specific event.
1847          * For this case, it only keeps the last expected event. so the command
1848          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1849          * last expected event.
1850          */
1851         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1852                 (*fw_ptr)++;
1853                 remain--;
1854
1855                 evt = (struct hci_event_hdr *)(*fw_ptr);
1856                 *fw_ptr += sizeof(*evt);
1857                 remain -= sizeof(*evt);
1858
1859                 if (remain < evt->plen) {
1860                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1861                         return -EFAULT;
1862                 }
1863
1864                 evt_param = *fw_ptr;
1865                 *fw_ptr += evt->plen;
1866                 remain -= evt->plen;
1867         }
1868
1869         /* Every HCI commands in the firmware file has its correspond event.
1870          * If event is not found or remain is smaller than zero, the firmware
1871          * file is corrupted.
1872          */
1873         if (!evt || !evt_param || remain < 0) {
1874                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1875                 return -EFAULT;
1876         }
1877
1878         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1879                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1880         if (IS_ERR(skb)) {
1881                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1882                            cmd->opcode, PTR_ERR(skb));
1883                 return PTR_ERR(skb);
1884         }
1885
1886         /* It ensures that the returned event matches the event data read from
1887          * the firmware file. At fist, it checks the length and then
1888          * the contents of the event.
1889          */
1890         if (skb->len != evt->plen) {
1891                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1892                            le16_to_cpu(cmd->opcode));
1893                 kfree_skb(skb);
1894                 return -EFAULT;
1895         }
1896
1897         if (memcmp(skb->data, evt_param, evt->plen)) {
1898                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1899                            le16_to_cpu(cmd->opcode));
1900                 kfree_skb(skb);
1901                 return -EFAULT;
1902         }
1903         kfree_skb(skb);
1904
1905         return 0;
1906 }
1907
1908 static int btusb_setup_intel(struct hci_dev *hdev)
1909 {
1910         struct sk_buff *skb;
1911         const struct firmware *fw;
1912         const u8 *fw_ptr;
1913         int disable_patch, err;
1914         struct intel_version ver;
1915
1916         BT_DBG("%s", hdev->name);
1917
1918         /* The controller has a bug with the first HCI command sent to it
1919          * returning number of completed commands as zero. This would stall the
1920          * command processing in the Bluetooth core.
1921          *
1922          * As a workaround, send HCI Reset command first which will reset the
1923          * number of completed commands and allow normal command processing
1924          * from now on.
1925          */
1926         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1927         if (IS_ERR(skb)) {
1928                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1929                            PTR_ERR(skb));
1930                 return PTR_ERR(skb);
1931         }
1932         kfree_skb(skb);
1933
1934         /* Read Intel specific controller version first to allow selection of
1935          * which firmware file to load.
1936          *
1937          * The returned information are hardware variant and revision plus
1938          * firmware variant, revision and build number.
1939          */
1940         err = btintel_read_version(hdev, &ver);
1941         if (err)
1942                 return err;
1943
1944         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1945                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1946                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1947                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1948
1949         /* fw_patch_num indicates the version of patch the device currently
1950          * have. If there is no patch data in the device, it is always 0x00.
1951          * So, if it is other than 0x00, no need to patch the device again.
1952          */
1953         if (ver.fw_patch_num) {
1954                 bt_dev_info(hdev, "Intel device is already patched. "
1955                             "patch num: %02x", ver.fw_patch_num);
1956                 goto complete;
1957         }
1958
1959         /* Opens the firmware patch file based on the firmware version read
1960          * from the controller. If it fails to open the matching firmware
1961          * patch file, it tries to open the default firmware patch file.
1962          * If no patch file is found, allow the device to operate without
1963          * a patch.
1964          */
1965         fw = btusb_setup_intel_get_fw(hdev, &ver);
1966         if (!fw)
1967                 goto complete;
1968         fw_ptr = fw->data;
1969
1970         /* Enable the manufacturer mode of the controller.
1971          * Only while this mode is enabled, the driver can download the
1972          * firmware patch data and configuration parameters.
1973          */
1974         err = btintel_enter_mfg(hdev);
1975         if (err) {
1976                 release_firmware(fw);
1977                 return err;
1978         }
1979
1980         disable_patch = 1;
1981
1982         /* The firmware data file consists of list of Intel specific HCI
1983          * commands and its expected events. The first byte indicates the
1984          * type of the message, either HCI command or HCI event.
1985          *
1986          * It reads the command and its expected event from the firmware file,
1987          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1988          * the returned event is compared with the event read from the firmware
1989          * file and it will continue until all the messages are downloaded to
1990          * the controller.
1991          *
1992          * Once the firmware patching is completed successfully,
1993          * the manufacturer mode is disabled with reset and activating the
1994          * downloaded patch.
1995          *
1996          * If the firmware patching fails, the manufacturer mode is
1997          * disabled with reset and deactivating the patch.
1998          *
1999          * If the default patch file is used, no reset is done when disabling
2000          * the manufacturer.
2001          */
2002         while (fw->size > fw_ptr - fw->data) {
2003                 int ret;
2004
2005                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2006                                                  &disable_patch);
2007                 if (ret < 0)
2008                         goto exit_mfg_deactivate;
2009         }
2010
2011         release_firmware(fw);
2012
2013         if (disable_patch)
2014                 goto exit_mfg_disable;
2015
2016         /* Patching completed successfully and disable the manufacturer mode
2017          * with reset and activate the downloaded firmware patches.
2018          */
2019         err = btintel_exit_mfg(hdev, true, true);
2020         if (err)
2021                 return err;
2022
2023         /* Need build number for downloaded fw patches in
2024          * every power-on boot
2025          */
2026        err = btintel_read_version(hdev, &ver);
2027        if (err)
2028                return err;
2029        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2030                    ver.fw_patch_num);
2031
2032         goto complete;
2033
2034 exit_mfg_disable:
2035         /* Disable the manufacturer mode without reset */
2036         err = btintel_exit_mfg(hdev, false, false);
2037         if (err)
2038                 return err;
2039
2040         bt_dev_info(hdev, "Intel firmware patch completed");
2041
2042         goto complete;
2043
2044 exit_mfg_deactivate:
2045         release_firmware(fw);
2046
2047         /* Patching failed. Disable the manufacturer mode with reset and
2048          * deactivate the downloaded firmware patches.
2049          */
2050         err = btintel_exit_mfg(hdev, true, false);
2051         if (err)
2052                 return err;
2053
2054         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2055
2056 complete:
2057         /* Set the event mask for Intel specific vendor events. This enables
2058          * a few extra events that are useful during general operation.
2059          */
2060         btintel_set_event_mask_mfg(hdev, false);
2061
2062         btintel_check_bdaddr(hdev);
2063         return 0;
2064 }
2065
2066 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2067 {
2068         struct sk_buff *skb;
2069         struct hci_event_hdr *hdr;
2070         struct hci_ev_cmd_complete *evt;
2071
2072         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2073         if (!skb)
2074                 return -ENOMEM;
2075
2076         hdr = skb_put(skb, sizeof(*hdr));
2077         hdr->evt = HCI_EV_CMD_COMPLETE;
2078         hdr->plen = sizeof(*evt) + 1;
2079
2080         evt = skb_put(skb, sizeof(*evt));
2081         evt->ncmd = 0x01;
2082         evt->opcode = cpu_to_le16(opcode);
2083
2084         skb_put_u8(skb, 0x00);
2085
2086         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2087
2088         return hci_recv_frame(hdev, skb);
2089 }
2090
2091 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2092                                  int count)
2093 {
2094         /* When the device is in bootloader mode, then it can send
2095          * events via the bulk endpoint. These events are treated the
2096          * same way as the ones received from the interrupt endpoint.
2097          */
2098         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2099                 return btusb_recv_intr(data, buffer, count);
2100
2101         return btusb_recv_bulk(data, buffer, count);
2102 }
2103
2104 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2105                                unsigned int len)
2106 {
2107         const struct intel_bootup *evt = ptr;
2108
2109         if (len != sizeof(*evt))
2110                 return;
2111
2112         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2113                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2114 }
2115
2116 static void btusb_intel_secure_send_result(struct btusb_data *data,
2117                                            const void *ptr, unsigned int len)
2118 {
2119         const struct intel_secure_send_result *evt = ptr;
2120
2121         if (len != sizeof(*evt))
2122                 return;
2123
2124         if (evt->result)
2125                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2126
2127         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2128             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2129                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2130 }
2131
2132 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2133 {
2134         struct btusb_data *data = hci_get_drvdata(hdev);
2135
2136         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2137                 struct hci_event_hdr *hdr = (void *)skb->data;
2138
2139                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2140                     hdr->plen > 0) {
2141                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2142                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2143
2144                         switch (skb->data[2]) {
2145                         case 0x02:
2146                                 /* When switching to the operational firmware
2147                                  * the device sends a vendor specific event
2148                                  * indicating that the bootup completed.
2149                                  */
2150                                 btusb_intel_bootup(data, ptr, len);
2151                                 break;
2152                         case 0x06:
2153                                 /* When the firmware loading completes the
2154                                  * device sends out a vendor specific event
2155                                  * indicating the result of the firmware
2156                                  * loading.
2157                                  */
2158                                 btusb_intel_secure_send_result(data, ptr, len);
2159                                 break;
2160                         }
2161                 }
2162         }
2163
2164         return hci_recv_frame(hdev, skb);
2165 }
2166
2167 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2168 {
2169         struct btusb_data *data = hci_get_drvdata(hdev);
2170         struct urb *urb;
2171
2172         BT_DBG("%s", hdev->name);
2173
2174         switch (hci_skb_pkt_type(skb)) {
2175         case HCI_COMMAND_PKT:
2176                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2177                         struct hci_command_hdr *cmd = (void *)skb->data;
2178                         __u16 opcode = le16_to_cpu(cmd->opcode);
2179
2180                         /* When in bootloader mode and the command 0xfc09
2181                          * is received, it needs to be send down the
2182                          * bulk endpoint. So allocate a bulk URB instead.
2183                          */
2184                         if (opcode == 0xfc09)
2185                                 urb = alloc_bulk_urb(hdev, skb);
2186                         else
2187                                 urb = alloc_ctrl_urb(hdev, skb);
2188
2189                         /* When the 0xfc01 command is issued to boot into
2190                          * the operational firmware, it will actually not
2191                          * send a command complete event. To keep the flow
2192                          * control working inject that event here.
2193                          */
2194                         if (opcode == 0xfc01)
2195                                 inject_cmd_complete(hdev, opcode);
2196                 } else {
2197                         urb = alloc_ctrl_urb(hdev, skb);
2198                 }
2199                 if (IS_ERR(urb))
2200                         return PTR_ERR(urb);
2201
2202                 hdev->stat.cmd_tx++;
2203                 return submit_or_queue_tx_urb(hdev, urb);
2204
2205         case HCI_ACLDATA_PKT:
2206                 urb = alloc_bulk_urb(hdev, skb);
2207                 if (IS_ERR(urb))
2208                         return PTR_ERR(urb);
2209
2210                 hdev->stat.acl_tx++;
2211                 return submit_or_queue_tx_urb(hdev, urb);
2212
2213         case HCI_SCODATA_PKT:
2214                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2215                         return -ENODEV;
2216
2217                 urb = alloc_isoc_urb(hdev, skb);
2218                 if (IS_ERR(urb))
2219                         return PTR_ERR(urb);
2220
2221                 hdev->stat.sco_tx++;
2222                 return submit_tx_urb(hdev, urb);
2223         }
2224
2225         return -EILSEQ;
2226 }
2227
2228 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2229                                              struct intel_boot_params *params,
2230                                              char *fw_name, size_t len,
2231                                              const char *suffix)
2232 {
2233         switch (ver->hw_variant) {
2234         case 0x0b:      /* SfP */
2235         case 0x0c:      /* WsP */
2236                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2237                         le16_to_cpu(ver->hw_variant),
2238                         le16_to_cpu(params->dev_revid),
2239                         suffix);
2240                 break;
2241         case 0x11:      /* JfP */
2242         case 0x12:      /* ThP */
2243         case 0x13:      /* HrP */
2244         case 0x14:      /* CcP */
2245                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2246                         le16_to_cpu(ver->hw_variant),
2247                         le16_to_cpu(ver->hw_revision),
2248                         le16_to_cpu(ver->fw_revision),
2249                         suffix);
2250                 break;
2251         default:
2252                 return false;
2253         }
2254         return true;
2255 }
2256
2257 static int btusb_setup_intel_new(struct hci_dev *hdev)
2258 {
2259         struct btusb_data *data = hci_get_drvdata(hdev);
2260         struct intel_version ver;
2261         struct intel_boot_params params;
2262         const struct firmware *fw;
2263         u32 boot_param;
2264         char fwname[64];
2265         ktime_t calltime, delta, rettime;
2266         unsigned long long duration;
2267         int err;
2268
2269         BT_DBG("%s", hdev->name);
2270
2271         /* Set the default boot parameter to 0x0 and it is updated to
2272          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2273          * command while downloading the firmware.
2274          */
2275         boot_param = 0x00000000;
2276
2277         calltime = ktime_get();
2278
2279         /* Read the Intel version information to determine if the device
2280          * is in bootloader mode or if it already has operational firmware
2281          * loaded.
2282          */
2283         err = btintel_read_version(hdev, &ver);
2284         if (err) {
2285                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2286                 btintel_reset_to_bootloader(hdev);
2287                 return err;
2288         }
2289
2290         /* The hardware platform number has a fixed value of 0x37 and
2291          * for now only accept this single value.
2292          */
2293         if (ver.hw_platform != 0x37) {
2294                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2295                            ver.hw_platform);
2296                 return -EINVAL;
2297         }
2298
2299         /* Check for supported iBT hardware variants of this firmware
2300          * loading method.
2301          *
2302          * This check has been put in place to ensure correct forward
2303          * compatibility options when newer hardware variants come along.
2304          */
2305         switch (ver.hw_variant) {
2306         case 0x0b:      /* SfP */
2307         case 0x0c:      /* WsP */
2308         case 0x11:      /* JfP */
2309         case 0x12:      /* ThP */
2310         case 0x13:      /* HrP */
2311         case 0x14:      /* CcP */
2312                 break;
2313         default:
2314                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2315                            ver.hw_variant);
2316                 return -EINVAL;
2317         }
2318
2319         btintel_version_info(hdev, &ver);
2320
2321         /* The firmware variant determines if the device is in bootloader
2322          * mode or is running operational firmware. The value 0x06 identifies
2323          * the bootloader and the value 0x23 identifies the operational
2324          * firmware.
2325          *
2326          * When the operational firmware is already present, then only
2327          * the check for valid Bluetooth device address is needed. This
2328          * determines if the device will be added as configured or
2329          * unconfigured controller.
2330          *
2331          * It is not possible to use the Secure Boot Parameters in this
2332          * case since that command is only available in bootloader mode.
2333          */
2334         if (ver.fw_variant == 0x23) {
2335                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2336                 btintel_check_bdaddr(hdev);
2337                 goto finish;
2338         }
2339
2340         /* If the device is not in bootloader mode, then the only possible
2341          * choice is to return an error and abort the device initialization.
2342          */
2343         if (ver.fw_variant != 0x06) {
2344                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2345                            ver.fw_variant);
2346                 return -ENODEV;
2347         }
2348
2349         /* Read the secure boot parameters to identify the operating
2350          * details of the bootloader.
2351          */
2352         err = btintel_read_boot_params(hdev, &params);
2353         if (err)
2354                 return err;
2355
2356         /* It is required that every single firmware fragment is acknowledged
2357          * with a command complete event. If the boot parameters indicate
2358          * that this bootloader does not send them, then abort the setup.
2359          */
2360         if (params.limited_cce != 0x00) {
2361                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2362                            params.limited_cce);
2363                 return -EINVAL;
2364         }
2365
2366         /* If the OTP has no valid Bluetooth device address, then there will
2367          * also be no valid address for the operational firmware.
2368          */
2369         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2370                 bt_dev_info(hdev, "No device address configured");
2371                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2372         }
2373
2374         /* With this Intel bootloader only the hardware variant and device
2375          * revision information are used to select the right firmware for SfP
2376          * and WsP.
2377          *
2378          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2379          *
2380          * Currently the supported hardware variants are:
2381          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2382          *   12 (0x0c) for iBT3.5 (WsP)
2383          *
2384          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2385          * variant, HW revision and FW revision, as these are dependent on CNVi
2386          * and RF Combination.
2387          *
2388          *   17 (0x11) for iBT3.5 (JfP)
2389          *   18 (0x12) for iBT3.5 (ThP)
2390          *
2391          * The firmware file name for these will be
2392          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2393          *
2394          */
2395         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2396                                                 sizeof(fwname), "sfi");
2397         if (!err) {
2398                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2399                 return -EINVAL;
2400         }
2401
2402         err = request_firmware(&fw, fwname, &hdev->dev);
2403         if (err < 0) {
2404                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2405                 return err;
2406         }
2407
2408         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2409
2410         /* Save the DDC file name for later use to apply once the firmware
2411          * downloading is done.
2412          */
2413         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2414                                                 sizeof(fwname), "ddc");
2415         if (!err) {
2416                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2417                 return -EINVAL;
2418         }
2419
2420         if (fw->size < 644) {
2421                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2422                            fw->size);
2423                 err = -EBADF;
2424                 goto done;
2425         }
2426
2427         set_bit(BTUSB_DOWNLOADING, &data->flags);
2428
2429         /* Start firmware downloading and get boot parameter */
2430         err = btintel_download_firmware(hdev, fw, &boot_param);
2431         if (err < 0) {
2432                 /* When FW download fails, send Intel Reset to retry
2433                  * FW download.
2434                  */
2435                 btintel_reset_to_bootloader(hdev);
2436                 goto done;
2437         }
2438         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2439
2440         bt_dev_info(hdev, "Waiting for firmware download to complete");
2441
2442         /* Before switching the device into operational mode and with that
2443          * booting the loaded firmware, wait for the bootloader notification
2444          * that all fragments have been successfully received.
2445          *
2446          * When the event processing receives the notification, then the
2447          * BTUSB_DOWNLOADING flag will be cleared.
2448          *
2449          * The firmware loading should not take longer than 5 seconds
2450          * and thus just timeout if that happens and fail the setup
2451          * of this device.
2452          */
2453         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2454                                   TASK_INTERRUPTIBLE,
2455                                   msecs_to_jiffies(5000));
2456         if (err == -EINTR) {
2457                 bt_dev_err(hdev, "Firmware loading interrupted");
2458                 goto done;
2459         }
2460
2461         if (err) {
2462                 bt_dev_err(hdev, "Firmware loading timeout");
2463                 err = -ETIMEDOUT;
2464                 btintel_reset_to_bootloader(hdev);
2465                 goto done;
2466         }
2467
2468         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2469                 bt_dev_err(hdev, "Firmware loading failed");
2470                 err = -ENOEXEC;
2471                 goto done;
2472         }
2473
2474         rettime = ktime_get();
2475         delta = ktime_sub(rettime, calltime);
2476         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2477
2478         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2479
2480 done:
2481         release_firmware(fw);
2482
2483         if (err < 0)
2484                 return err;
2485
2486         calltime = ktime_get();
2487
2488         set_bit(BTUSB_BOOTING, &data->flags);
2489
2490         err = btintel_send_intel_reset(hdev, boot_param);
2491         if (err) {
2492                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2493                 btintel_reset_to_bootloader(hdev);
2494                 return err;
2495         }
2496
2497         /* The bootloader will not indicate when the device is ready. This
2498          * is done by the operational firmware sending bootup notification.
2499          *
2500          * Booting into operational firmware should not take longer than
2501          * 1 second. However if that happens, then just fail the setup
2502          * since something went wrong.
2503          */
2504         bt_dev_info(hdev, "Waiting for device to boot");
2505
2506         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2507                                   TASK_INTERRUPTIBLE,
2508                                   msecs_to_jiffies(1000));
2509
2510         if (err == -EINTR) {
2511                 bt_dev_err(hdev, "Device boot interrupted");
2512                 return -EINTR;
2513         }
2514
2515         if (err) {
2516                 bt_dev_err(hdev, "Device boot timeout");
2517                 btintel_reset_to_bootloader(hdev);
2518                 return -ETIMEDOUT;
2519         }
2520
2521         rettime = ktime_get();
2522         delta = ktime_sub(rettime, calltime);
2523         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2524
2525         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2526
2527         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2528
2529         /* Once the device is running in operational mode, it needs to apply
2530          * the device configuration (DDC) parameters.
2531          *
2532          * The device can work without DDC parameters, so even if it fails
2533          * to load the file, no need to fail the setup.
2534          */
2535         btintel_load_ddc_config(hdev, fwname);
2536
2537         /* Read the Intel version information after loading the FW  */
2538         err = btintel_read_version(hdev, &ver);
2539         if (err)
2540                 return err;
2541
2542         btintel_version_info(hdev, &ver);
2543
2544 finish:
2545         /* Set the event mask for Intel specific vendor events. This enables
2546          * a few extra events that are useful during general operation. It
2547          * does not enable any debugging related events.
2548          *
2549          * The device will function correctly without these events enabled
2550          * and thus no need to fail the setup.
2551          */
2552         btintel_set_event_mask(hdev, false);
2553
2554         return 0;
2555 }
2556
2557 static int btusb_shutdown_intel(struct hci_dev *hdev)
2558 {
2559         struct sk_buff *skb;
2560         long ret;
2561
2562         /* In the shutdown sequence where Bluetooth is turned off followed
2563          * by WiFi being turned off, turning WiFi back on causes issue with
2564          * the RF calibration.
2565          *
2566          * To ensure that any RF activity has been stopped, issue HCI Reset
2567          * command to clear all ongoing activity including advertising,
2568          * scanning etc.
2569          */
2570         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2571         if (IS_ERR(skb)) {
2572                 ret = PTR_ERR(skb);
2573                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2574                 return ret;
2575         }
2576         kfree_skb(skb);
2577
2578         /* Some platforms have an issue with BT LED when the interface is
2579          * down or BT radio is turned off, which takes 5 seconds to BT LED
2580          * goes off. This command turns off the BT LED immediately.
2581          */
2582         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2583         if (IS_ERR(skb)) {
2584                 ret = PTR_ERR(skb);
2585                 bt_dev_err(hdev, "turning off Intel device LED failed");
2586                 return ret;
2587         }
2588         kfree_skb(skb);
2589
2590         return 0;
2591 }
2592
2593 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2594 {
2595         struct sk_buff *skb;
2596
2597         /* Send HCI Reset to the controller to stop any BT activity which
2598          * were triggered. This will help to save power and maintain the
2599          * sync b/w Host and controller
2600          */
2601         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2602         if (IS_ERR(skb)) {
2603                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2604                 return PTR_ERR(skb);
2605         }
2606         kfree_skb(skb);
2607
2608         return 0;
2609 }
2610
2611 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2612 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2613
2614 #define HCI_WMT_MAX_EVENT_SIZE          64
2615
2616 enum {
2617         BTMTK_WMT_PATCH_DWNLD = 0x1,
2618         BTMTK_WMT_FUNC_CTRL = 0x6,
2619         BTMTK_WMT_RST = 0x7,
2620         BTMTK_WMT_SEMAPHORE = 0x17,
2621 };
2622
2623 enum {
2624         BTMTK_WMT_INVALID,
2625         BTMTK_WMT_PATCH_UNDONE,
2626         BTMTK_WMT_PATCH_DONE,
2627         BTMTK_WMT_ON_UNDONE,
2628         BTMTK_WMT_ON_DONE,
2629         BTMTK_WMT_ON_PROGRESS,
2630 };
2631
2632 struct btmtk_wmt_hdr {
2633         u8      dir;
2634         u8      op;
2635         __le16  dlen;
2636         u8      flag;
2637 } __packed;
2638
2639 struct btmtk_hci_wmt_cmd {
2640         struct btmtk_wmt_hdr hdr;
2641         u8 data[256];
2642 } __packed;
2643
2644 struct btmtk_hci_wmt_evt {
2645         struct hci_event_hdr hhdr;
2646         struct btmtk_wmt_hdr whdr;
2647 } __packed;
2648
2649 struct btmtk_hci_wmt_evt_funcc {
2650         struct btmtk_hci_wmt_evt hwhdr;
2651         __be16 status;
2652 } __packed;
2653
2654 struct btmtk_tci_sleep {
2655         u8 mode;
2656         __le16 duration;
2657         __le16 host_duration;
2658         u8 host_wakeup_pin;
2659         u8 time_compensation;
2660 } __packed;
2661
2662 struct btmtk_hci_wmt_params {
2663         u8 op;
2664         u8 flag;
2665         u16 dlen;
2666         const void *data;
2667         u32 *status;
2668 };
2669
2670 static void btusb_mtk_wmt_recv(struct urb *urb)
2671 {
2672         struct hci_dev *hdev = urb->context;
2673         struct btusb_data *data = hci_get_drvdata(hdev);
2674         struct hci_event_hdr *hdr;
2675         struct sk_buff *skb;
2676         int err;
2677
2678         if (urb->status == 0 && urb->actual_length > 0) {
2679                 hdev->stat.byte_rx += urb->actual_length;
2680
2681                 /* WMT event shouldn't be fragmented and the size should be
2682                  * less than HCI_WMT_MAX_EVENT_SIZE.
2683                  */
2684                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2685                 if (!skb) {
2686                         hdev->stat.err_rx++;
2687                         goto err_out;
2688                 }
2689
2690                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2691                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2692
2693                 hdr = (void *)skb->data;
2694                 /* Fix up the vendor event id with 0xff for vendor specific
2695                  * instead of 0xe4 so that event send via monitoring socket can
2696                  * be parsed properly.
2697                  */
2698                 hdr->evt = 0xff;
2699
2700                 /* When someone waits for the WMT event, the skb is being cloned
2701                  * and being processed the events from there then.
2702                  */
2703                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2704                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2705                         if (!data->evt_skb)
2706                                 goto err_out;
2707                 }
2708
2709                 err = hci_recv_frame(hdev, skb);
2710                 if (err < 0)
2711                         goto err_free_skb;
2712
2713                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2714                                        &data->flags)) {
2715                         /* Barrier to sync with other CPUs */
2716                         smp_mb__after_atomic();
2717                         wake_up_bit(&data->flags,
2718                                     BTUSB_TX_WAIT_VND_EVT);
2719                 }
2720 err_out:
2721                 return;
2722 err_free_skb:
2723                 kfree_skb(data->evt_skb);
2724                 data->evt_skb = NULL;
2725                 return;
2726         } else if (urb->status == -ENOENT) {
2727                 /* Avoid suspend failed when usb_kill_urb */
2728                 return;
2729         }
2730
2731         usb_mark_last_busy(data->udev);
2732
2733         /* The URB complete handler is still called with urb->actual_length = 0
2734          * when the event is not available, so we should keep re-submitting
2735          * URB until WMT event returns, Also, It's necessary to wait some time
2736          * between the two consecutive control URBs to relax the target device
2737          * to generate the event. Otherwise, the WMT event cannot return from
2738          * the device successfully.
2739          */
2740         udelay(100);
2741
2742         usb_anchor_urb(urb, &data->ctrl_anchor);
2743         err = usb_submit_urb(urb, GFP_ATOMIC);
2744         if (err < 0) {
2745                 /* -EPERM: urb is being killed;
2746                  * -ENODEV: device got disconnected
2747                  */
2748                 if (err != -EPERM && err != -ENODEV)
2749                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2750                                    urb, -err);
2751                 usb_unanchor_urb(urb);
2752         }
2753 }
2754
2755 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2756 {
2757         struct btusb_data *data = hci_get_drvdata(hdev);
2758         struct usb_ctrlrequest *dr;
2759         unsigned char *buf;
2760         int err, size = 64;
2761         unsigned int pipe;
2762         struct urb *urb;
2763
2764         urb = usb_alloc_urb(0, GFP_KERNEL);
2765         if (!urb)
2766                 return -ENOMEM;
2767
2768         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2769         if (!dr) {
2770                 usb_free_urb(urb);
2771                 return -ENOMEM;
2772         }
2773
2774         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2775         dr->bRequest     = 1;
2776         dr->wIndex       = cpu_to_le16(0);
2777         dr->wValue       = cpu_to_le16(48);
2778         dr->wLength      = cpu_to_le16(size);
2779
2780         buf = kmalloc(size, GFP_KERNEL);
2781         if (!buf) {
2782                 kfree(dr);
2783                 return -ENOMEM;
2784         }
2785
2786         pipe = usb_rcvctrlpipe(data->udev, 0);
2787
2788         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2789                              buf, size, btusb_mtk_wmt_recv, hdev);
2790
2791         urb->transfer_flags |= URB_FREE_BUFFER;
2792
2793         usb_anchor_urb(urb, &data->ctrl_anchor);
2794         err = usb_submit_urb(urb, GFP_KERNEL);
2795         if (err < 0) {
2796                 if (err != -EPERM && err != -ENODEV)
2797                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2798                                    urb, -err);
2799                 usb_unanchor_urb(urb);
2800         }
2801
2802         usb_free_urb(urb);
2803
2804         return err;
2805 }
2806
2807 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2808                                   struct btmtk_hci_wmt_params *wmt_params)
2809 {
2810         struct btusb_data *data = hci_get_drvdata(hdev);
2811         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2812         u32 hlen, status = BTMTK_WMT_INVALID;
2813         struct btmtk_hci_wmt_evt *wmt_evt;
2814         struct btmtk_hci_wmt_cmd wc;
2815         struct btmtk_wmt_hdr *hdr;
2816         int err;
2817
2818         /* Submit control IN URB on demand to process the WMT event */
2819         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2820         if (err < 0)
2821                 return err;
2822
2823         /* Send the WMT command and wait until the WMT event returns */
2824         hlen = sizeof(*hdr) + wmt_params->dlen;
2825         if (hlen > 255)
2826                 return -EINVAL;
2827
2828         hdr = (struct btmtk_wmt_hdr *)&wc;
2829         hdr->dir = 1;
2830         hdr->op = wmt_params->op;
2831         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2832         hdr->flag = wmt_params->flag;
2833         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2834
2835         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2836
2837         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2838
2839         if (err < 0) {
2840                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2841                 return err;
2842         }
2843
2844         /* The vendor specific WMT commands are all answered by a vendor
2845          * specific event and will have the Command Status or Command
2846          * Complete as with usual HCI command flow control.
2847          *
2848          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2849          * state to be cleared. The driver specific event receive routine
2850          * will clear that state and with that indicate completion of the
2851          * WMT command.
2852          */
2853         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2854                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2855         if (err == -EINTR) {
2856                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2857                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2858                 return err;
2859         }
2860
2861         if (err) {
2862                 bt_dev_err(hdev, "Execution of wmt command timed out");
2863                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2864                 return -ETIMEDOUT;
2865         }
2866
2867         /* Parse and handle the return WMT event */
2868         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2869         if (wmt_evt->whdr.op != hdr->op) {
2870                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2871                            wmt_evt->whdr.op, hdr->op);
2872                 err = -EIO;
2873                 goto err_free_skb;
2874         }
2875
2876         switch (wmt_evt->whdr.op) {
2877         case BTMTK_WMT_SEMAPHORE:
2878                 if (wmt_evt->whdr.flag == 2)
2879                         status = BTMTK_WMT_PATCH_UNDONE;
2880                 else
2881                         status = BTMTK_WMT_PATCH_DONE;
2882                 break;
2883         case BTMTK_WMT_FUNC_CTRL:
2884                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2885                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2886                         status = BTMTK_WMT_ON_DONE;
2887                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2888                         status = BTMTK_WMT_ON_PROGRESS;
2889                 else
2890                         status = BTMTK_WMT_ON_UNDONE;
2891                 break;
2892         }
2893
2894         if (wmt_params->status)
2895                 *wmt_params->status = status;
2896
2897 err_free_skb:
2898         kfree_skb(data->evt_skb);
2899         data->evt_skb = NULL;
2900
2901         return err;
2902 }
2903
2904 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2905 {
2906         struct btmtk_hci_wmt_params wmt_params;
2907         const struct firmware *fw;
2908         const u8 *fw_ptr;
2909         size_t fw_size;
2910         int err, dlen;
2911         u8 flag;
2912
2913         err = request_firmware(&fw, fwname, &hdev->dev);
2914         if (err < 0) {
2915                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2916                 return err;
2917         }
2918
2919         fw_ptr = fw->data;
2920         fw_size = fw->size;
2921
2922         /* The size of patch header is 30 bytes, should be skip */
2923         if (fw_size < 30) {
2924                 err = -EINVAL;
2925                 goto err_release_fw;
2926         }
2927
2928         fw_size -= 30;
2929         fw_ptr += 30;
2930         flag = 1;
2931
2932         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2933         wmt_params.status = NULL;
2934
2935         while (fw_size > 0) {
2936                 dlen = min_t(int, 250, fw_size);
2937
2938                 /* Tell deivice the position in sequence */
2939                 if (fw_size - dlen <= 0)
2940                         flag = 3;
2941                 else if (fw_size < fw->size - 30)
2942                         flag = 2;
2943
2944                 wmt_params.flag = flag;
2945                 wmt_params.dlen = dlen;
2946                 wmt_params.data = fw_ptr;
2947
2948                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2949                 if (err < 0) {
2950                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2951                                    err);
2952                         goto err_release_fw;
2953                 }
2954
2955                 fw_size -= dlen;
2956                 fw_ptr += dlen;
2957         }
2958
2959         wmt_params.op = BTMTK_WMT_RST;
2960         wmt_params.flag = 4;
2961         wmt_params.dlen = 0;
2962         wmt_params.data = NULL;
2963         wmt_params.status = NULL;
2964
2965         /* Activate funciton the firmware providing to */
2966         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2967         if (err < 0) {
2968                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2969                 goto err_release_fw;
2970         }
2971
2972         /* Wait a few moments for firmware activation done */
2973         usleep_range(10000, 12000);
2974
2975 err_release_fw:
2976         release_firmware(fw);
2977
2978         return err;
2979 }
2980
2981 static int btusb_mtk_func_query(struct hci_dev *hdev)
2982 {
2983         struct btmtk_hci_wmt_params wmt_params;
2984         int status, err;
2985         u8 param = 0;
2986
2987         /* Query whether the function is enabled */
2988         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2989         wmt_params.flag = 4;
2990         wmt_params.dlen = sizeof(param);
2991         wmt_params.data = &param;
2992         wmt_params.status = &status;
2993
2994         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2995         if (err < 0) {
2996                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2997                 return err;
2998         }
2999
3000         return status;
3001 }
3002
3003 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3004 {
3005         int pipe, err, size = sizeof(u32);
3006         void *buf;
3007
3008         buf = kzalloc(size, GFP_KERNEL);
3009         if (!buf)
3010                 return -ENOMEM;
3011
3012         pipe = usb_rcvctrlpipe(data->udev, 0);
3013         err = usb_control_msg(data->udev, pipe, 0x63,
3014                               USB_TYPE_VENDOR | USB_DIR_IN,
3015                               reg >> 16, reg & 0xffff,
3016                               buf, size, USB_CTRL_SET_TIMEOUT);
3017         if (err < 0)
3018                 goto err_free_buf;
3019
3020         *val = get_unaligned_le32(buf);
3021
3022 err_free_buf:
3023         kfree(buf);
3024
3025         return err;
3026 }
3027
3028 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
3029 {
3030         return btusb_mtk_reg_read(data, 0x80000008, id);
3031 }
3032
3033 static int btusb_mtk_setup(struct hci_dev *hdev)
3034 {
3035         struct btusb_data *data = hci_get_drvdata(hdev);
3036         struct btmtk_hci_wmt_params wmt_params;
3037         ktime_t calltime, delta, rettime;
3038         struct btmtk_tci_sleep tci_sleep;
3039         unsigned long long duration;
3040         struct sk_buff *skb;
3041         const char *fwname;
3042         int err, status;
3043         u32 dev_id;
3044         u8 param;
3045
3046         calltime = ktime_get();
3047
3048         err = btusb_mtk_id_get(data, &dev_id);
3049         if (err < 0) {
3050                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3051                 return err;
3052         }
3053
3054         switch (dev_id) {
3055         case 0x7663:
3056                 fwname = FIRMWARE_MT7663;
3057                 break;
3058         case 0x7668:
3059                 fwname = FIRMWARE_MT7668;
3060                 break;
3061         default:
3062                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3063                            dev_id);
3064                 return -ENODEV;
3065         }
3066
3067         /* Query whether the firmware is already download */
3068         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3069         wmt_params.flag = 1;
3070         wmt_params.dlen = 0;
3071         wmt_params.data = NULL;
3072         wmt_params.status = &status;
3073
3074         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3075         if (err < 0) {
3076                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3077                 return err;
3078         }
3079
3080         if (status == BTMTK_WMT_PATCH_DONE) {
3081                 bt_dev_info(hdev, "firmware already downloaded");
3082                 goto ignore_setup_fw;
3083         }
3084
3085         /* Setup a firmware which the device definitely requires */
3086         err = btusb_mtk_setup_firmware(hdev, fwname);
3087         if (err < 0)
3088                 return err;
3089
3090 ignore_setup_fw:
3091         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3092                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3093                                  2000, 5000000);
3094         /* -ETIMEDOUT happens */
3095         if (err < 0)
3096                 return err;
3097
3098         /* The other errors happen in btusb_mtk_func_query */
3099         if (status < 0)
3100                 return status;
3101
3102         if (status == BTMTK_WMT_ON_DONE) {
3103                 bt_dev_info(hdev, "function already on");
3104                 goto ignore_func_on;
3105         }
3106
3107         /* Enable Bluetooth protocol */
3108         param = 1;
3109         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3110         wmt_params.flag = 0;
3111         wmt_params.dlen = sizeof(param);
3112         wmt_params.data = &param;
3113         wmt_params.status = NULL;
3114
3115         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3116         if (err < 0) {
3117                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3118                 return err;
3119         }
3120
3121 ignore_func_on:
3122         /* Apply the low power environment setup */
3123         tci_sleep.mode = 0x5;
3124         tci_sleep.duration = cpu_to_le16(0x640);
3125         tci_sleep.host_duration = cpu_to_le16(0x640);
3126         tci_sleep.host_wakeup_pin = 0;
3127         tci_sleep.time_compensation = 0;
3128
3129         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3130                              HCI_INIT_TIMEOUT);
3131         if (IS_ERR(skb)) {
3132                 err = PTR_ERR(skb);
3133                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3134                 return err;
3135         }
3136         kfree_skb(skb);
3137
3138         rettime = ktime_get();
3139         delta = ktime_sub(rettime, calltime);
3140         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3141
3142         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3143
3144         return 0;
3145 }
3146
3147 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3148 {
3149         struct btmtk_hci_wmt_params wmt_params;
3150         u8 param = 0;
3151         int err;
3152
3153         /* Disable the device */
3154         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3155         wmt_params.flag = 0;
3156         wmt_params.dlen = sizeof(param);
3157         wmt_params.data = &param;
3158         wmt_params.status = NULL;
3159
3160         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3161         if (err < 0) {
3162                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3163                 return err;
3164         }
3165
3166         return 0;
3167 }
3168
3169 MODULE_FIRMWARE(FIRMWARE_MT7663);
3170 MODULE_FIRMWARE(FIRMWARE_MT7668);
3171
3172 #ifdef CONFIG_PM
3173 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3174 static int marvell_config_oob_wake(struct hci_dev *hdev)
3175 {
3176         struct sk_buff *skb;
3177         struct btusb_data *data = hci_get_drvdata(hdev);
3178         struct device *dev = &data->udev->dev;
3179         u16 pin, gap, opcode;
3180         int ret;
3181         u8 cmd[5];
3182
3183         /* Move on if no wakeup pin specified */
3184         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3185             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3186                 return 0;
3187
3188         /* Vendor specific command to configure a GPIO as wake-up pin */
3189         opcode = hci_opcode_pack(0x3F, 0x59);
3190         cmd[0] = opcode & 0xFF;
3191         cmd[1] = opcode >> 8;
3192         cmd[2] = 2; /* length of parameters that follow */
3193         cmd[3] = pin;
3194         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3195
3196         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3197         if (!skb) {
3198                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3199                 return -ENOMEM;
3200         }
3201
3202         skb_put_data(skb, cmd, sizeof(cmd));
3203         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3204
3205         ret = btusb_send_frame(hdev, skb);
3206         if (ret) {
3207                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3208                 kfree_skb(skb);
3209                 return ret;
3210         }
3211
3212         return 0;
3213 }
3214 #endif
3215
3216 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3217                                     const bdaddr_t *bdaddr)
3218 {
3219         struct sk_buff *skb;
3220         u8 buf[8];
3221         long ret;
3222
3223         buf[0] = 0xfe;
3224         buf[1] = sizeof(bdaddr_t);
3225         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3226
3227         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3228         if (IS_ERR(skb)) {
3229                 ret = PTR_ERR(skb);
3230                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3231                            ret);
3232                 return ret;
3233         }
3234         kfree_skb(skb);
3235
3236         return 0;
3237 }
3238
3239 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3240                                     const bdaddr_t *bdaddr)
3241 {
3242         struct sk_buff *skb;
3243         u8 buf[10];
3244         long ret;
3245
3246         buf[0] = 0x01;
3247         buf[1] = 0x01;
3248         buf[2] = 0x00;
3249         buf[3] = sizeof(bdaddr_t);
3250         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3251
3252         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3253         if (IS_ERR(skb)) {
3254                 ret = PTR_ERR(skb);
3255                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3256                 return ret;
3257         }
3258         kfree_skb(skb);
3259
3260         return 0;
3261 }
3262
3263 #define QCA_DFU_PACKET_LEN      4096
3264
3265 #define QCA_GET_TARGET_VERSION  0x09
3266 #define QCA_CHECK_STATUS        0x05
3267 #define QCA_DFU_DOWNLOAD        0x01
3268
3269 #define QCA_SYSCFG_UPDATED      0x40
3270 #define QCA_PATCH_UPDATED       0x80
3271 #define QCA_DFU_TIMEOUT         3000
3272
3273 struct qca_version {
3274         __le32  rom_version;
3275         __le32  patch_version;
3276         __le32  ram_version;
3277         __le32  ref_clock;
3278         __u8    reserved[4];
3279 } __packed;
3280
3281 struct qca_rampatch_version {
3282         __le16  rom_version;
3283         __le16  patch_version;
3284 } __packed;
3285
3286 struct qca_device_info {
3287         u32     rom_version;
3288         u8      rampatch_hdr;   /* length of header in rampatch */
3289         u8      nvm_hdr;        /* length of header in NVM */
3290         u8      ver_offset;     /* offset of version structure in rampatch */
3291 };
3292
3293 static const struct qca_device_info qca_devices_table[] = {
3294         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3295         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3296         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3297         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3298         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3299         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3300 };
3301
3302 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3303                                      void *data, u16 size)
3304 {
3305         int pipe, err;
3306         u8 *buf;
3307
3308         buf = kmalloc(size, GFP_KERNEL);
3309         if (!buf)
3310                 return -ENOMEM;
3311
3312         /* Found some of USB hosts have IOT issues with ours so that we should
3313          * not wait until HCI layer is ready.
3314          */
3315         pipe = usb_rcvctrlpipe(udev, 0);
3316         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3317                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3318         if (err < 0) {
3319                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3320                 goto done;
3321         }
3322
3323         memcpy(data, buf, size);
3324
3325 done:
3326         kfree(buf);
3327
3328         return err;
3329 }
3330
3331 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3332                                        const struct firmware *firmware,
3333                                        size_t hdr_size)
3334 {
3335         struct btusb_data *btdata = hci_get_drvdata(hdev);
3336         struct usb_device *udev = btdata->udev;
3337         size_t count, size, sent = 0;
3338         int pipe, len, err;
3339         u8 *buf;
3340
3341         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3342         if (!buf)
3343                 return -ENOMEM;
3344
3345         count = firmware->size;
3346
3347         size = min_t(size_t, count, hdr_size);
3348         memcpy(buf, firmware->data, size);
3349
3350         /* USB patches should go down to controller through USB path
3351          * because binary format fits to go down through USB channel.
3352          * USB control path is for patching headers and USB bulk is for
3353          * patch body.
3354          */
3355         pipe = usb_sndctrlpipe(udev, 0);
3356         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3357                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3358         if (err < 0) {
3359                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3360                 goto done;
3361         }
3362
3363         sent += size;
3364         count -= size;
3365
3366         while (count) {
3367                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3368
3369                 memcpy(buf, firmware->data + sent, size);
3370
3371                 pipe = usb_sndbulkpipe(udev, 0x02);
3372                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3373                                    QCA_DFU_TIMEOUT);
3374                 if (err < 0) {
3375                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3376                                    sent, firmware->size, err);
3377                         break;
3378                 }
3379
3380                 if (size != len) {
3381                         bt_dev_err(hdev, "Failed to get bulk buffer");
3382                         err = -EILSEQ;
3383                         break;
3384                 }
3385
3386                 sent  += size;
3387                 count -= size;
3388         }
3389
3390 done:
3391         kfree(buf);
3392         return err;
3393 }
3394
3395 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3396                                          struct qca_version *ver,
3397                                          const struct qca_device_info *info)
3398 {
3399         struct qca_rampatch_version *rver;
3400         const struct firmware *fw;
3401         u32 ver_rom, ver_patch;
3402         u16 rver_rom, rver_patch;
3403         char fwname[64];
3404         int err;
3405
3406         ver_rom = le32_to_cpu(ver->rom_version);
3407         ver_patch = le32_to_cpu(ver->patch_version);
3408
3409         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3410
3411         err = request_firmware(&fw, fwname, &hdev->dev);
3412         if (err) {
3413                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3414                            fwname, err);
3415                 return err;
3416         }
3417
3418         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3419
3420         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3421         rver_rom = le16_to_cpu(rver->rom_version);
3422         rver_patch = le16_to_cpu(rver->patch_version);
3423
3424         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3425                     "firmware rome 0x%x build 0x%x",
3426                     rver_rom, rver_patch, ver_rom, ver_patch);
3427
3428         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3429                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3430                 err = -EINVAL;
3431                 goto done;
3432         }
3433
3434         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3435
3436 done:
3437         release_firmware(fw);
3438
3439         return err;
3440 }
3441
3442 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3443                                     struct qca_version *ver,
3444                                     const struct qca_device_info *info)
3445 {
3446         const struct firmware *fw;
3447         char fwname[64];
3448         int err;
3449
3450         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3451                  le32_to_cpu(ver->rom_version));
3452
3453         err = request_firmware(&fw, fwname, &hdev->dev);
3454         if (err) {
3455                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3456                            fwname, err);
3457                 return err;
3458         }
3459
3460         bt_dev_info(hdev, "using NVM file: %s", fwname);
3461
3462         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3463
3464         release_firmware(fw);
3465
3466         return err;
3467 }
3468
3469 /* identify the ROM version and check whether patches are needed */
3470 static bool btusb_qca_need_patch(struct usb_device *udev)
3471 {
3472         struct qca_version ver;
3473
3474         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3475                                       sizeof(ver)) < 0)
3476                 return false;
3477         /* only low ROM versions need patches */
3478         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3479 }
3480
3481 static int btusb_setup_qca(struct hci_dev *hdev)
3482 {
3483         struct btusb_data *btdata = hci_get_drvdata(hdev);
3484         struct usb_device *udev = btdata->udev;
3485         const struct qca_device_info *info = NULL;
3486         struct qca_version ver;
3487         u32 ver_rom;
3488         u8 status;
3489         int i, err;
3490
3491         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3492                                         sizeof(ver));
3493         if (err < 0)
3494                 return err;
3495
3496         ver_rom = le32_to_cpu(ver.rom_version);
3497         /* Don't care about high ROM versions */
3498         if (ver_rom & ~0xffffU)
3499                 return 0;
3500
3501         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3502                 if (ver_rom == qca_devices_table[i].rom_version)
3503                         info = &qca_devices_table[i];
3504         }
3505         if (!info) {
3506                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3507                 return -ENODEV;
3508         }
3509
3510         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3511                                         sizeof(status));
3512         if (err < 0)
3513                 return err;
3514
3515         if (!(status & QCA_PATCH_UPDATED)) {
3516                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3517                 if (err < 0)
3518                         return err;
3519         }
3520
3521         if (!(status & QCA_SYSCFG_UPDATED)) {
3522                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3523                 if (err < 0)
3524                         return err;
3525         }
3526
3527         return 0;
3528 }
3529
3530 static inline int __set_diag_interface(struct hci_dev *hdev)
3531 {
3532         struct btusb_data *data = hci_get_drvdata(hdev);
3533         struct usb_interface *intf = data->diag;
3534         int i;
3535
3536         if (!data->diag)
3537                 return -ENODEV;
3538
3539         data->diag_tx_ep = NULL;
3540         data->diag_rx_ep = NULL;
3541
3542         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3543                 struct usb_endpoint_descriptor *ep_desc;
3544
3545                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3546
3547                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3548                         data->diag_tx_ep = ep_desc;
3549                         continue;
3550                 }
3551
3552                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3553                         data->diag_rx_ep = ep_desc;
3554                         continue;
3555                 }
3556         }
3557
3558         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3559                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3560                 return -ENODEV;
3561         }
3562
3563         return 0;
3564 }
3565
3566 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3567 {
3568         struct btusb_data *data = hci_get_drvdata(hdev);
3569         struct sk_buff *skb;
3570         struct urb *urb;
3571         unsigned int pipe;
3572
3573         if (!data->diag_tx_ep)
3574                 return ERR_PTR(-ENODEV);
3575
3576         urb = usb_alloc_urb(0, GFP_KERNEL);
3577         if (!urb)
3578                 return ERR_PTR(-ENOMEM);
3579
3580         skb = bt_skb_alloc(2, GFP_KERNEL);
3581         if (!skb) {
3582                 usb_free_urb(urb);
3583                 return ERR_PTR(-ENOMEM);
3584         }
3585
3586         skb_put_u8(skb, 0xf0);
3587         skb_put_u8(skb, enable);
3588
3589         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3590
3591         usb_fill_bulk_urb(urb, data->udev, pipe,
3592                           skb->data, skb->len, btusb_tx_complete, skb);
3593
3594         skb->dev = (void *)hdev;
3595
3596         return urb;
3597 }
3598
3599 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3600 {
3601         struct btusb_data *data = hci_get_drvdata(hdev);
3602         struct urb *urb;
3603
3604         if (!data->diag)
3605                 return -ENODEV;
3606
3607         if (!test_bit(HCI_RUNNING, &hdev->flags))
3608                 return -ENETDOWN;
3609
3610         urb = alloc_diag_urb(hdev, enable);
3611         if (IS_ERR(urb))
3612                 return PTR_ERR(urb);
3613
3614         return submit_or_queue_tx_urb(hdev, urb);
3615 }
3616
3617 #ifdef CONFIG_PM
3618 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3619 {
3620         struct btusb_data *data = priv;
3621
3622         pm_wakeup_event(&data->udev->dev, 0);
3623         pm_system_wakeup();
3624
3625         /* Disable only if not already disabled (keep it balanced) */
3626         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3627                 disable_irq_nosync(irq);
3628                 disable_irq_wake(irq);
3629         }
3630         return IRQ_HANDLED;
3631 }
3632
3633 static const struct of_device_id btusb_match_table[] = {
3634         { .compatible = "usb1286,204e" },
3635         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3636         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3637         { }
3638 };
3639 MODULE_DEVICE_TABLE(of, btusb_match_table);
3640
3641 /* Use an oob wakeup pin? */
3642 static int btusb_config_oob_wake(struct hci_dev *hdev)
3643 {
3644         struct btusb_data *data = hci_get_drvdata(hdev);
3645         struct device *dev = &data->udev->dev;
3646         int irq, ret;
3647
3648         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3649
3650         if (!of_match_device(btusb_match_table, dev))
3651                 return 0;
3652
3653         /* Move on if no IRQ specified */
3654         irq = of_irq_get_byname(dev->of_node, "wakeup");
3655         if (irq <= 0) {
3656                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3657                 return 0;
3658         }
3659
3660         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3661         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3662                                0, "OOB Wake-on-BT", data);
3663         if (ret) {
3664                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3665                 return ret;
3666         }
3667
3668         ret = device_init_wakeup(dev, true);
3669         if (ret) {
3670                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3671                 return ret;
3672         }
3673
3674         data->oob_wake_irq = irq;
3675         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3676         return 0;
3677 }
3678 #endif
3679
3680 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3681 {
3682         if (dmi_check_system(btusb_needs_reset_resume_table))
3683                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3684 }
3685
3686 static int btusb_probe(struct usb_interface *intf,
3687                        const struct usb_device_id *id)
3688 {
3689         struct usb_endpoint_descriptor *ep_desc;
3690         struct gpio_desc *reset_gpio;
3691         struct btusb_data *data;
3692         struct hci_dev *hdev;
3693         unsigned ifnum_base;
3694         int i, err;
3695
3696         BT_DBG("intf %p id %p", intf, id);
3697
3698         /* interface numbers are hardcoded in the spec */
3699         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3700                 if (!(id->driver_info & BTUSB_IFNUM_2))
3701                         return -ENODEV;
3702                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3703                         return -ENODEV;
3704         }
3705
3706         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3707
3708         if (!id->driver_info) {
3709                 const struct usb_device_id *match;
3710
3711                 match = usb_match_id(intf, blacklist_table);
3712                 if (match)
3713                         id = match;
3714         }
3715
3716         if (id->driver_info == BTUSB_IGNORE)
3717                 return -ENODEV;
3718
3719         if (id->driver_info & BTUSB_ATH3012) {
3720                 struct usb_device *udev = interface_to_usbdev(intf);
3721
3722                 /* Old firmware would otherwise let ath3k driver load
3723                  * patch and sysconfig files
3724                  */
3725                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3726                     !btusb_qca_need_patch(udev))
3727                         return -ENODEV;
3728         }
3729
3730         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3731         if (!data)
3732                 return -ENOMEM;
3733
3734         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3735                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3736
3737                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3738                         data->intr_ep = ep_desc;
3739                         continue;
3740                 }
3741
3742                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3743                         data->bulk_tx_ep = ep_desc;
3744                         continue;
3745                 }
3746
3747                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3748                         data->bulk_rx_ep = ep_desc;
3749                         continue;
3750                 }
3751         }
3752
3753         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3754                 return -ENODEV;
3755
3756         if (id->driver_info & BTUSB_AMP) {
3757                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3758                 data->cmdreq = 0x2b;
3759         } else {
3760                 data->cmdreq_type = USB_TYPE_CLASS;
3761                 data->cmdreq = 0x00;
3762         }
3763
3764         data->udev = interface_to_usbdev(intf);
3765         data->intf = intf;
3766
3767         INIT_WORK(&data->work, btusb_work);
3768         INIT_WORK(&data->waker, btusb_waker);
3769         init_usb_anchor(&data->deferred);
3770         init_usb_anchor(&data->tx_anchor);
3771         spin_lock_init(&data->txlock);
3772
3773         init_usb_anchor(&data->intr_anchor);
3774         init_usb_anchor(&data->bulk_anchor);
3775         init_usb_anchor(&data->isoc_anchor);
3776         init_usb_anchor(&data->diag_anchor);
3777         init_usb_anchor(&data->ctrl_anchor);
3778         spin_lock_init(&data->rxlock);
3779
3780         if (id->driver_info & BTUSB_INTEL_NEW) {
3781                 data->recv_event = btusb_recv_event_intel;
3782                 data->recv_bulk = btusb_recv_bulk_intel;
3783                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3784         } else {
3785                 data->recv_event = hci_recv_frame;
3786                 data->recv_bulk = btusb_recv_bulk;
3787         }
3788
3789         hdev = hci_alloc_dev();
3790         if (!hdev)
3791                 return -ENOMEM;
3792
3793         hdev->bus = HCI_USB;
3794         hci_set_drvdata(hdev, data);
3795
3796         if (id->driver_info & BTUSB_AMP)
3797                 hdev->dev_type = HCI_AMP;
3798         else
3799                 hdev->dev_type = HCI_PRIMARY;
3800
3801         data->hdev = hdev;
3802
3803         SET_HCIDEV_DEV(hdev, &intf->dev);
3804
3805         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3806                                         GPIOD_OUT_LOW);
3807         if (IS_ERR(reset_gpio)) {
3808                 err = PTR_ERR(reset_gpio);
3809                 goto out_free_dev;
3810         } else if (reset_gpio) {
3811                 data->reset_gpio = reset_gpio;
3812         }
3813
3814         hdev->open   = btusb_open;
3815         hdev->close  = btusb_close;
3816         hdev->flush  = btusb_flush;
3817         hdev->send   = btusb_send_frame;
3818         hdev->notify = btusb_notify;
3819
3820 #ifdef CONFIG_PM
3821         err = btusb_config_oob_wake(hdev);
3822         if (err)
3823                 goto out_free_dev;
3824
3825         /* Marvell devices may need a specific chip configuration */
3826         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3827                 err = marvell_config_oob_wake(hdev);
3828                 if (err)
3829                         goto out_free_dev;
3830         }
3831 #endif
3832         if (id->driver_info & BTUSB_CW6622)
3833                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3834
3835         if (id->driver_info & BTUSB_BCM2045)
3836                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3837
3838         if (id->driver_info & BTUSB_BCM92035)
3839                 hdev->setup = btusb_setup_bcm92035;
3840
3841         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3842             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3843                 hdev->manufacturer = 15;
3844                 hdev->setup = btbcm_setup_patchram;
3845                 hdev->set_diag = btusb_bcm_set_diag;
3846                 hdev->set_bdaddr = btbcm_set_bdaddr;
3847
3848                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3849                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3850         }
3851
3852         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3853             (id->driver_info & BTUSB_BCM_APPLE)) {
3854                 hdev->manufacturer = 15;
3855                 hdev->setup = btbcm_setup_apple;
3856                 hdev->set_diag = btusb_bcm_set_diag;
3857
3858                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3859                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3860         }
3861
3862         if (id->driver_info & BTUSB_INTEL) {
3863                 hdev->manufacturer = 2;
3864                 hdev->setup = btusb_setup_intel;
3865                 hdev->shutdown = btusb_shutdown_intel;
3866                 hdev->set_diag = btintel_set_diag_mfg;
3867                 hdev->set_bdaddr = btintel_set_bdaddr;
3868                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3869                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3870                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3871                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3872         }
3873
3874         if (id->driver_info & BTUSB_INTEL_NEW) {
3875                 hdev->manufacturer = 2;
3876                 hdev->send = btusb_send_frame_intel;
3877                 hdev->setup = btusb_setup_intel_new;
3878                 hdev->shutdown = btusb_shutdown_intel_new;
3879                 hdev->hw_error = btintel_hw_error;
3880                 hdev->set_diag = btintel_set_diag;
3881                 hdev->set_bdaddr = btintel_set_bdaddr;
3882                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3883                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3884                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3885                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3886         }
3887
3888         if (id->driver_info & BTUSB_MARVELL)
3889                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3890
3891         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3892             (id->driver_info & BTUSB_MEDIATEK)) {
3893                 hdev->setup = btusb_mtk_setup;
3894                 hdev->shutdown = btusb_mtk_shutdown;
3895                 hdev->manufacturer = 70;
3896                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3897         }
3898
3899         if (id->driver_info & BTUSB_SWAVE) {
3900                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3901                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3902         }
3903
3904         if (id->driver_info & BTUSB_INTEL_BOOT) {
3905                 hdev->manufacturer = 2;
3906                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3907         }
3908
3909         if (id->driver_info & BTUSB_ATH3012) {
3910                 data->setup_on_usb = btusb_setup_qca;
3911                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3912                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3913                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3914         }
3915
3916         if (id->driver_info & BTUSB_QCA_ROME) {
3917                 data->setup_on_usb = btusb_setup_qca;
3918                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3919                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3920                 btusb_check_needs_reset_resume(intf);
3921         }
3922
3923         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3924             (id->driver_info & BTUSB_REALTEK)) {
3925                 hdev->setup = btrtl_setup_realtek;
3926                 hdev->shutdown = btrtl_shutdown_realtek;
3927                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3928
3929                 /* Realtek devices lose their updated firmware over global
3930                  * suspend that means host doesn't send SET_FEATURE
3931                  * (DEVICE_REMOTE_WAKEUP)
3932                  */
3933                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3934
3935                 err = usb_autopm_get_interface(intf);
3936                 if (err < 0)
3937                         goto out_free_dev;
3938         }
3939
3940         if (id->driver_info & BTUSB_AMP) {
3941                 /* AMP controllers do not support SCO packets */
3942                 data->isoc = NULL;
3943         } else {
3944                 /* Interface orders are hardcoded in the specification */
3945                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3946                 data->isoc_ifnum = ifnum_base + 1;
3947         }
3948
3949         if (!reset)
3950                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3951
3952         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3953                 if (!disable_scofix)
3954                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3955         }
3956
3957         if (id->driver_info & BTUSB_BROKEN_ISOC)
3958                 data->isoc = NULL;
3959
3960         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3961                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3962
3963         if (id->driver_info & BTUSB_DIGIANSWER) {
3964                 data->cmdreq_type = USB_TYPE_VENDOR;
3965                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3966         }
3967
3968         if (id->driver_info & BTUSB_CSR) {
3969                 struct usb_device *udev = data->udev;
3970                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3971
3972                 /* Old firmware would otherwise execute USB reset */
3973                 if (bcdDevice < 0x117)
3974                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3975
3976                 /* Fake CSR devices with broken commands */
3977                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3978                         hdev->setup = btusb_setup_csr;
3979
3980                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3981         }
3982
3983         if (id->driver_info & BTUSB_SNIFFER) {
3984                 struct usb_device *udev = data->udev;
3985
3986                 /* New sniffer firmware has crippled HCI interface */
3987                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3988                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3989         }
3990
3991         if (id->driver_info & BTUSB_INTEL_BOOT) {
3992                 /* A bug in the bootloader causes that interrupt interface is
3993                  * only enabled after receiving SetInterface(0, AltSetting=0).
3994                  */
3995                 err = usb_set_interface(data->udev, 0, 0);
3996                 if (err < 0) {
3997                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3998                         goto out_free_dev;
3999                 }
4000         }
4001
4002         if (data->isoc) {
4003                 err = usb_driver_claim_interface(&btusb_driver,
4004                                                  data->isoc, data);
4005                 if (err < 0)
4006                         goto out_free_dev;
4007         }
4008
4009         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4010                 if (!usb_driver_claim_interface(&btusb_driver,
4011                                                 data->diag, data))
4012                         __set_diag_interface(hdev);
4013                 else
4014                         data->diag = NULL;
4015         }
4016
4017         if (enable_autosuspend)
4018                 usb_enable_autosuspend(data->udev);
4019
4020         err = hci_register_dev(hdev);
4021         if (err < 0)
4022                 goto out_free_dev;
4023
4024         usb_set_intfdata(intf, data);
4025
4026         return 0;
4027
4028 out_free_dev:
4029         if (data->reset_gpio)
4030                 gpiod_put(data->reset_gpio);
4031         hci_free_dev(hdev);
4032         return err;
4033 }
4034
4035 static void btusb_disconnect(struct usb_interface *intf)
4036 {
4037         struct btusb_data *data = usb_get_intfdata(intf);
4038         struct hci_dev *hdev;
4039
4040         BT_DBG("intf %p", intf);
4041
4042         if (!data)
4043                 return;
4044
4045         hdev = data->hdev;
4046         usb_set_intfdata(data->intf, NULL);
4047
4048         if (data->isoc)
4049                 usb_set_intfdata(data->isoc, NULL);
4050
4051         if (data->diag)
4052                 usb_set_intfdata(data->diag, NULL);
4053
4054         hci_unregister_dev(hdev);
4055
4056         if (intf == data->intf) {
4057                 if (data->isoc)
4058                         usb_driver_release_interface(&btusb_driver, data->isoc);
4059                 if (data->diag)
4060                         usb_driver_release_interface(&btusb_driver, data->diag);
4061         } else if (intf == data->isoc) {
4062                 if (data->diag)
4063                         usb_driver_release_interface(&btusb_driver, data->diag);
4064                 usb_driver_release_interface(&btusb_driver, data->intf);
4065         } else if (intf == data->diag) {
4066                 usb_driver_release_interface(&btusb_driver, data->intf);
4067                 if (data->isoc)
4068                         usb_driver_release_interface(&btusb_driver, data->isoc);
4069         }
4070
4071         if (data->oob_wake_irq)
4072                 device_init_wakeup(&data->udev->dev, false);
4073
4074         if (data->reset_gpio)
4075                 gpiod_put(data->reset_gpio);
4076
4077         hci_free_dev(hdev);
4078 }
4079
4080 #ifdef CONFIG_PM
4081 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4082 {
4083         struct btusb_data *data = usb_get_intfdata(intf);
4084
4085         BT_DBG("intf %p", intf);
4086
4087         if (data->suspend_count++)
4088                 return 0;
4089
4090         spin_lock_irq(&data->txlock);
4091         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4092                 set_bit(BTUSB_SUSPENDING, &data->flags);
4093                 spin_unlock_irq(&data->txlock);
4094         } else {
4095                 spin_unlock_irq(&data->txlock);
4096                 data->suspend_count--;
4097                 return -EBUSY;
4098         }
4099
4100         cancel_work_sync(&data->work);
4101
4102         btusb_stop_traffic(data);
4103         usb_kill_anchored_urbs(&data->tx_anchor);
4104
4105         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4106                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4107                 enable_irq_wake(data->oob_wake_irq);
4108                 enable_irq(data->oob_wake_irq);
4109         }
4110
4111         /* For global suspend, Realtek devices lose the loaded fw
4112          * in them. But for autosuspend, firmware should remain.
4113          * Actually, it depends on whether the usb host sends
4114          * set feature (enable wakeup) or not.
4115          */
4116         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4117                 if (PMSG_IS_AUTO(message) &&
4118                     device_can_wakeup(&data->udev->dev))
4119                         data->udev->do_remote_wakeup = 1;
4120                 else if (!PMSG_IS_AUTO(message))
4121                         data->udev->reset_resume = 1;
4122         }
4123
4124         return 0;
4125 }
4126
4127 static void play_deferred(struct btusb_data *data)
4128 {
4129         struct urb *urb;
4130         int err;
4131
4132         while ((urb = usb_get_from_anchor(&data->deferred))) {
4133                 usb_anchor_urb(urb, &data->tx_anchor);
4134
4135                 err = usb_submit_urb(urb, GFP_ATOMIC);
4136                 if (err < 0) {
4137                         if (err != -EPERM && err != -ENODEV)
4138                                 BT_ERR("%s urb %p submission failed (%d)",
4139                                        data->hdev->name, urb, -err);
4140                         kfree(urb->setup_packet);
4141                         usb_unanchor_urb(urb);
4142                         usb_free_urb(urb);
4143                         break;
4144                 }
4145
4146                 data->tx_in_flight++;
4147                 usb_free_urb(urb);
4148         }
4149
4150         /* Cleanup the rest deferred urbs. */
4151         while ((urb = usb_get_from_anchor(&data->deferred))) {
4152                 kfree(urb->setup_packet);
4153                 usb_free_urb(urb);
4154         }
4155 }
4156
4157 static int btusb_resume(struct usb_interface *intf)
4158 {
4159         struct btusb_data *data = usb_get_intfdata(intf);
4160         struct hci_dev *hdev = data->hdev;
4161         int err = 0;
4162
4163         BT_DBG("intf %p", intf);
4164
4165         if (--data->suspend_count)
4166                 return 0;
4167
4168         /* Disable only if not already disabled (keep it balanced) */
4169         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4170                 disable_irq(data->oob_wake_irq);
4171                 disable_irq_wake(data->oob_wake_irq);
4172         }
4173
4174         if (!test_bit(HCI_RUNNING, &hdev->flags))
4175                 goto done;
4176
4177         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4178                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4179                 if (err < 0) {
4180                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4181                         goto failed;
4182                 }
4183         }
4184
4185         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4186                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4187                 if (err < 0) {
4188                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4189                         goto failed;
4190                 }
4191
4192                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4193         }
4194
4195         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4196                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4197                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4198                 else
4199                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4200         }
4201
4202         spin_lock_irq(&data->txlock);
4203         play_deferred(data);
4204         clear_bit(BTUSB_SUSPENDING, &data->flags);
4205         spin_unlock_irq(&data->txlock);
4206         schedule_work(&data->work);
4207
4208         return 0;
4209
4210 failed:
4211         usb_scuttle_anchored_urbs(&data->deferred);
4212 done:
4213         spin_lock_irq(&data->txlock);
4214         clear_bit(BTUSB_SUSPENDING, &data->flags);
4215         spin_unlock_irq(&data->txlock);
4216
4217         return err;
4218 }
4219 #endif
4220
4221 static struct usb_driver btusb_driver = {
4222         .name           = "btusb",
4223         .probe          = btusb_probe,
4224         .disconnect     = btusb_disconnect,
4225 #ifdef CONFIG_PM
4226         .suspend        = btusb_suspend,
4227         .resume         = btusb_resume,
4228 #endif
4229         .id_table       = btusb_table,
4230         .supports_autosuspend = 1,
4231         .disable_hub_initiated_lpm = 1,
4232 };
4233
4234 module_usb_driver(btusb_driver);
4235
4236 module_param(disable_scofix, bool, 0644);
4237 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4238
4239 module_param(force_scofix, bool, 0644);
4240 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4241
4242 module_param(enable_autosuspend, bool, 0644);
4243 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4244
4245 module_param(reset, bool, 0644);
4246 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4247
4248 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4249 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4250 MODULE_VERSION(VERSION);
4251 MODULE_LICENSE("GPL");