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         if (!intf)
1626                 return NULL;
1627
1628         for (i = 0; i < intf->num_altsetting; i++) {
1629                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1630                         return &intf->altsetting[i];
1631         }
1632
1633         return NULL;
1634 }
1635
1636 static void btusb_work(struct work_struct *work)
1637 {
1638         struct btusb_data *data = container_of(work, struct btusb_data, work);
1639         struct hci_dev *hdev = data->hdev;
1640         int new_alts = 0;
1641         int err;
1642
1643         if (data->sco_num > 0) {
1644                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1645                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1646                         if (err < 0) {
1647                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1648                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1649                                 return;
1650                         }
1651
1652                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1653                 }
1654
1655                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1656                         if (hdev->voice_setting & 0x0020) {
1657                                 static const int alts[3] = { 2, 4, 5 };
1658
1659                                 new_alts = alts[data->sco_num - 1];
1660                         } else {
1661                                 new_alts = data->sco_num;
1662                         }
1663                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1664
1665                         data->usb_alt6_packet_flow = true;
1666
1667                         /* Check if Alt 6 is supported for Transparent audio */
1668                         if (btusb_find_altsetting(data, 6))
1669                                 new_alts = 6;
1670                         else
1671                                 bt_dev_err(hdev, "Device does not support ALT setting 6");
1672                 }
1673
1674                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1675                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1676         } else {
1677                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1678                 usb_kill_anchored_urbs(&data->isoc_anchor);
1679
1680                 __set_isoc_interface(hdev, 0);
1681                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1682                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1683         }
1684 }
1685
1686 static void btusb_waker(struct work_struct *work)
1687 {
1688         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1689         int err;
1690
1691         err = usb_autopm_get_interface(data->intf);
1692         if (err < 0)
1693                 return;
1694
1695         usb_autopm_put_interface(data->intf);
1696 }
1697
1698 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1699 {
1700         struct sk_buff *skb;
1701         u8 val = 0x00;
1702
1703         BT_DBG("%s", hdev->name);
1704
1705         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1706         if (IS_ERR(skb))
1707                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1708         else
1709                 kfree_skb(skb);
1710
1711         return 0;
1712 }
1713
1714 static int btusb_setup_csr(struct hci_dev *hdev)
1715 {
1716         struct hci_rp_read_local_version *rp;
1717         struct sk_buff *skb;
1718
1719         BT_DBG("%s", hdev->name);
1720
1721         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1722                              HCI_INIT_TIMEOUT);
1723         if (IS_ERR(skb)) {
1724                 int err = PTR_ERR(skb);
1725                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1726                 return err;
1727         }
1728
1729         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1730                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1731                 kfree_skb(skb);
1732                 return -EIO;
1733         }
1734
1735         rp = (struct hci_rp_read_local_version *)skb->data;
1736
1737         /* Detect controllers which aren't real CSR ones. */
1738         if (le16_to_cpu(rp->manufacturer) != 10 ||
1739             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1740                 /* Clear the reset quirk since this is not an actual
1741                  * early Bluetooth 1.1 device from CSR.
1742                  */
1743                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1744
1745                 /* These fake CSR controllers have all a broken
1746                  * stored link key handling and so just disable it.
1747                  */
1748                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1749         }
1750
1751         kfree_skb(skb);
1752
1753         return 0;
1754 }
1755
1756 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1757                                                        struct intel_version *ver)
1758 {
1759         const struct firmware *fw;
1760         char fwname[64];
1761         int ret;
1762
1763         snprintf(fwname, sizeof(fwname),
1764                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1765                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1766                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1767                  ver->fw_build_ww, ver->fw_build_yy);
1768
1769         ret = request_firmware(&fw, fwname, &hdev->dev);
1770         if (ret < 0) {
1771                 if (ret == -EINVAL) {
1772                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1773                                    ret);
1774                         return NULL;
1775                 }
1776
1777                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1778                            fwname, ret);
1779
1780                 /* If the correct firmware patch file is not found, use the
1781                  * default firmware patch file instead
1782                  */
1783                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1784                          ver->hw_platform, ver->hw_variant);
1785                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1786                         bt_dev_err(hdev, "failed to open default fw file: %s",
1787                                    fwname);
1788                         return NULL;
1789                 }
1790         }
1791
1792         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1793
1794         return fw;
1795 }
1796
1797 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1798                                       const struct firmware *fw,
1799                                       const u8 **fw_ptr, int *disable_patch)
1800 {
1801         struct sk_buff *skb;
1802         struct hci_command_hdr *cmd;
1803         const u8 *cmd_param;
1804         struct hci_event_hdr *evt = NULL;
1805         const u8 *evt_param = NULL;
1806         int remain = fw->size - (*fw_ptr - fw->data);
1807
1808         /* The first byte indicates the types of the patch command or event.
1809          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1810          * in the current firmware buffer doesn't start with 0x01 or
1811          * the size of remain buffer is smaller than HCI command header,
1812          * the firmware file is corrupted and it should stop the patching
1813          * process.
1814          */
1815         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1816                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1817                 return -EINVAL;
1818         }
1819         (*fw_ptr)++;
1820         remain--;
1821
1822         cmd = (struct hci_command_hdr *)(*fw_ptr);
1823         *fw_ptr += sizeof(*cmd);
1824         remain -= sizeof(*cmd);
1825
1826         /* Ensure that the remain firmware data is long enough than the length
1827          * of command parameter. If not, the firmware file is corrupted.
1828          */
1829         if (remain < cmd->plen) {
1830                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1831                 return -EFAULT;
1832         }
1833
1834         /* If there is a command that loads a patch in the firmware
1835          * file, then enable the patch upon success, otherwise just
1836          * disable the manufacturer mode, for example patch activation
1837          * is not required when the default firmware patch file is used
1838          * because there are no patch data to load.
1839          */
1840         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1841                 *disable_patch = 0;
1842
1843         cmd_param = *fw_ptr;
1844         *fw_ptr += cmd->plen;
1845         remain -= cmd->plen;
1846
1847         /* This reads the expected events when the above command is sent to the
1848          * device. Some vendor commands expects more than one events, for
1849          * example command status event followed by vendor specific event.
1850          * For this case, it only keeps the last expected event. so the command
1851          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1852          * last expected event.
1853          */
1854         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1855                 (*fw_ptr)++;
1856                 remain--;
1857
1858                 evt = (struct hci_event_hdr *)(*fw_ptr);
1859                 *fw_ptr += sizeof(*evt);
1860                 remain -= sizeof(*evt);
1861
1862                 if (remain < evt->plen) {
1863                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1864                         return -EFAULT;
1865                 }
1866
1867                 evt_param = *fw_ptr;
1868                 *fw_ptr += evt->plen;
1869                 remain -= evt->plen;
1870         }
1871
1872         /* Every HCI commands in the firmware file has its correspond event.
1873          * If event is not found or remain is smaller than zero, the firmware
1874          * file is corrupted.
1875          */
1876         if (!evt || !evt_param || remain < 0) {
1877                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1878                 return -EFAULT;
1879         }
1880
1881         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1882                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1883         if (IS_ERR(skb)) {
1884                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1885                            cmd->opcode, PTR_ERR(skb));
1886                 return PTR_ERR(skb);
1887         }
1888
1889         /* It ensures that the returned event matches the event data read from
1890          * the firmware file. At fist, it checks the length and then
1891          * the contents of the event.
1892          */
1893         if (skb->len != evt->plen) {
1894                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1895                            le16_to_cpu(cmd->opcode));
1896                 kfree_skb(skb);
1897                 return -EFAULT;
1898         }
1899
1900         if (memcmp(skb->data, evt_param, evt->plen)) {
1901                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1902                            le16_to_cpu(cmd->opcode));
1903                 kfree_skb(skb);
1904                 return -EFAULT;
1905         }
1906         kfree_skb(skb);
1907
1908         return 0;
1909 }
1910
1911 static int btusb_setup_intel(struct hci_dev *hdev)
1912 {
1913         struct sk_buff *skb;
1914         const struct firmware *fw;
1915         const u8 *fw_ptr;
1916         int disable_patch, err;
1917         struct intel_version ver;
1918
1919         BT_DBG("%s", hdev->name);
1920
1921         /* The controller has a bug with the first HCI command sent to it
1922          * returning number of completed commands as zero. This would stall the
1923          * command processing in the Bluetooth core.
1924          *
1925          * As a workaround, send HCI Reset command first which will reset the
1926          * number of completed commands and allow normal command processing
1927          * from now on.
1928          */
1929         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1930         if (IS_ERR(skb)) {
1931                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1932                            PTR_ERR(skb));
1933                 return PTR_ERR(skb);
1934         }
1935         kfree_skb(skb);
1936
1937         /* Read Intel specific controller version first to allow selection of
1938          * which firmware file to load.
1939          *
1940          * The returned information are hardware variant and revision plus
1941          * firmware variant, revision and build number.
1942          */
1943         err = btintel_read_version(hdev, &ver);
1944         if (err)
1945                 return err;
1946
1947         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1948                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1949                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1950                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1951
1952         /* fw_patch_num indicates the version of patch the device currently
1953          * have. If there is no patch data in the device, it is always 0x00.
1954          * So, if it is other than 0x00, no need to patch the device again.
1955          */
1956         if (ver.fw_patch_num) {
1957                 bt_dev_info(hdev, "Intel device is already patched. "
1958                             "patch num: %02x", ver.fw_patch_num);
1959                 goto complete;
1960         }
1961
1962         /* Opens the firmware patch file based on the firmware version read
1963          * from the controller. If it fails to open the matching firmware
1964          * patch file, it tries to open the default firmware patch file.
1965          * If no patch file is found, allow the device to operate without
1966          * a patch.
1967          */
1968         fw = btusb_setup_intel_get_fw(hdev, &ver);
1969         if (!fw)
1970                 goto complete;
1971         fw_ptr = fw->data;
1972
1973         /* Enable the manufacturer mode of the controller.
1974          * Only while this mode is enabled, the driver can download the
1975          * firmware patch data and configuration parameters.
1976          */
1977         err = btintel_enter_mfg(hdev);
1978         if (err) {
1979                 release_firmware(fw);
1980                 return err;
1981         }
1982
1983         disable_patch = 1;
1984
1985         /* The firmware data file consists of list of Intel specific HCI
1986          * commands and its expected events. The first byte indicates the
1987          * type of the message, either HCI command or HCI event.
1988          *
1989          * It reads the command and its expected event from the firmware file,
1990          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1991          * the returned event is compared with the event read from the firmware
1992          * file and it will continue until all the messages are downloaded to
1993          * the controller.
1994          *
1995          * Once the firmware patching is completed successfully,
1996          * the manufacturer mode is disabled with reset and activating the
1997          * downloaded patch.
1998          *
1999          * If the firmware patching fails, the manufacturer mode is
2000          * disabled with reset and deactivating the patch.
2001          *
2002          * If the default patch file is used, no reset is done when disabling
2003          * the manufacturer.
2004          */
2005         while (fw->size > fw_ptr - fw->data) {
2006                 int ret;
2007
2008                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2009                                                  &disable_patch);
2010                 if (ret < 0)
2011                         goto exit_mfg_deactivate;
2012         }
2013
2014         release_firmware(fw);
2015
2016         if (disable_patch)
2017                 goto exit_mfg_disable;
2018
2019         /* Patching completed successfully and disable the manufacturer mode
2020          * with reset and activate the downloaded firmware patches.
2021          */
2022         err = btintel_exit_mfg(hdev, true, true);
2023         if (err)
2024                 return err;
2025
2026         /* Need build number for downloaded fw patches in
2027          * every power-on boot
2028          */
2029        err = btintel_read_version(hdev, &ver);
2030        if (err)
2031                return err;
2032        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2033                    ver.fw_patch_num);
2034
2035         goto complete;
2036
2037 exit_mfg_disable:
2038         /* Disable the manufacturer mode without reset */
2039         err = btintel_exit_mfg(hdev, false, false);
2040         if (err)
2041                 return err;
2042
2043         bt_dev_info(hdev, "Intel firmware patch completed");
2044
2045         goto complete;
2046
2047 exit_mfg_deactivate:
2048         release_firmware(fw);
2049
2050         /* Patching failed. Disable the manufacturer mode with reset and
2051          * deactivate the downloaded firmware patches.
2052          */
2053         err = btintel_exit_mfg(hdev, true, false);
2054         if (err)
2055                 return err;
2056
2057         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2058
2059 complete:
2060         /* Set the event mask for Intel specific vendor events. This enables
2061          * a few extra events that are useful during general operation.
2062          */
2063         btintel_set_event_mask_mfg(hdev, false);
2064
2065         btintel_check_bdaddr(hdev);
2066         return 0;
2067 }
2068
2069 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2070 {
2071         struct sk_buff *skb;
2072         struct hci_event_hdr *hdr;
2073         struct hci_ev_cmd_complete *evt;
2074
2075         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2076         if (!skb)
2077                 return -ENOMEM;
2078
2079         hdr = skb_put(skb, sizeof(*hdr));
2080         hdr->evt = HCI_EV_CMD_COMPLETE;
2081         hdr->plen = sizeof(*evt) + 1;
2082
2083         evt = skb_put(skb, sizeof(*evt));
2084         evt->ncmd = 0x01;
2085         evt->opcode = cpu_to_le16(opcode);
2086
2087         skb_put_u8(skb, 0x00);
2088
2089         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2090
2091         return hci_recv_frame(hdev, skb);
2092 }
2093
2094 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2095                                  int count)
2096 {
2097         /* When the device is in bootloader mode, then it can send
2098          * events via the bulk endpoint. These events are treated the
2099          * same way as the ones received from the interrupt endpoint.
2100          */
2101         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2102                 return btusb_recv_intr(data, buffer, count);
2103
2104         return btusb_recv_bulk(data, buffer, count);
2105 }
2106
2107 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2108                                unsigned int len)
2109 {
2110         const struct intel_bootup *evt = ptr;
2111
2112         if (len != sizeof(*evt))
2113                 return;
2114
2115         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2116                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2117 }
2118
2119 static void btusb_intel_secure_send_result(struct btusb_data *data,
2120                                            const void *ptr, unsigned int len)
2121 {
2122         const struct intel_secure_send_result *evt = ptr;
2123
2124         if (len != sizeof(*evt))
2125                 return;
2126
2127         if (evt->result)
2128                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2129
2130         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2131             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2132                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2133 }
2134
2135 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2136 {
2137         struct btusb_data *data = hci_get_drvdata(hdev);
2138
2139         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2140                 struct hci_event_hdr *hdr = (void *)skb->data;
2141
2142                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2143                     hdr->plen > 0) {
2144                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2145                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2146
2147                         switch (skb->data[2]) {
2148                         case 0x02:
2149                                 /* When switching to the operational firmware
2150                                  * the device sends a vendor specific event
2151                                  * indicating that the bootup completed.
2152                                  */
2153                                 btusb_intel_bootup(data, ptr, len);
2154                                 break;
2155                         case 0x06:
2156                                 /* When the firmware loading completes the
2157                                  * device sends out a vendor specific event
2158                                  * indicating the result of the firmware
2159                                  * loading.
2160                                  */
2161                                 btusb_intel_secure_send_result(data, ptr, len);
2162                                 break;
2163                         }
2164                 }
2165         }
2166
2167         return hci_recv_frame(hdev, skb);
2168 }
2169
2170 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2171 {
2172         struct btusb_data *data = hci_get_drvdata(hdev);
2173         struct urb *urb;
2174
2175         BT_DBG("%s", hdev->name);
2176
2177         switch (hci_skb_pkt_type(skb)) {
2178         case HCI_COMMAND_PKT:
2179                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2180                         struct hci_command_hdr *cmd = (void *)skb->data;
2181                         __u16 opcode = le16_to_cpu(cmd->opcode);
2182
2183                         /* When in bootloader mode and the command 0xfc09
2184                          * is received, it needs to be send down the
2185                          * bulk endpoint. So allocate a bulk URB instead.
2186                          */
2187                         if (opcode == 0xfc09)
2188                                 urb = alloc_bulk_urb(hdev, skb);
2189                         else
2190                                 urb = alloc_ctrl_urb(hdev, skb);
2191
2192                         /* When the 0xfc01 command is issued to boot into
2193                          * the operational firmware, it will actually not
2194                          * send a command complete event. To keep the flow
2195                          * control working inject that event here.
2196                          */
2197                         if (opcode == 0xfc01)
2198                                 inject_cmd_complete(hdev, opcode);
2199                 } else {
2200                         urb = alloc_ctrl_urb(hdev, skb);
2201                 }
2202                 if (IS_ERR(urb))
2203                         return PTR_ERR(urb);
2204
2205                 hdev->stat.cmd_tx++;
2206                 return submit_or_queue_tx_urb(hdev, urb);
2207
2208         case HCI_ACLDATA_PKT:
2209                 urb = alloc_bulk_urb(hdev, skb);
2210                 if (IS_ERR(urb))
2211                         return PTR_ERR(urb);
2212
2213                 hdev->stat.acl_tx++;
2214                 return submit_or_queue_tx_urb(hdev, urb);
2215
2216         case HCI_SCODATA_PKT:
2217                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2218                         return -ENODEV;
2219
2220                 urb = alloc_isoc_urb(hdev, skb);
2221                 if (IS_ERR(urb))
2222                         return PTR_ERR(urb);
2223
2224                 hdev->stat.sco_tx++;
2225                 return submit_tx_urb(hdev, urb);
2226         }
2227
2228         return -EILSEQ;
2229 }
2230
2231 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2232                                              struct intel_boot_params *params,
2233                                              char *fw_name, size_t len,
2234                                              const char *suffix)
2235 {
2236         switch (ver->hw_variant) {
2237         case 0x0b:      /* SfP */
2238         case 0x0c:      /* WsP */
2239                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2240                         le16_to_cpu(ver->hw_variant),
2241                         le16_to_cpu(params->dev_revid),
2242                         suffix);
2243                 break;
2244         case 0x11:      /* JfP */
2245         case 0x12:      /* ThP */
2246         case 0x13:      /* HrP */
2247         case 0x14:      /* CcP */
2248                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2249                         le16_to_cpu(ver->hw_variant),
2250                         le16_to_cpu(ver->hw_revision),
2251                         le16_to_cpu(ver->fw_revision),
2252                         suffix);
2253                 break;
2254         default:
2255                 return false;
2256         }
2257         return true;
2258 }
2259
2260 static int btusb_setup_intel_new(struct hci_dev *hdev)
2261 {
2262         struct btusb_data *data = hci_get_drvdata(hdev);
2263         struct intel_version ver;
2264         struct intel_boot_params params;
2265         const struct firmware *fw;
2266         u32 boot_param;
2267         char fwname[64];
2268         ktime_t calltime, delta, rettime;
2269         unsigned long long duration;
2270         int err;
2271
2272         BT_DBG("%s", hdev->name);
2273
2274         /* Set the default boot parameter to 0x0 and it is updated to
2275          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2276          * command while downloading the firmware.
2277          */
2278         boot_param = 0x00000000;
2279
2280         calltime = ktime_get();
2281
2282         /* Read the Intel version information to determine if the device
2283          * is in bootloader mode or if it already has operational firmware
2284          * loaded.
2285          */
2286         err = btintel_read_version(hdev, &ver);
2287         if (err) {
2288                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2289                 btintel_reset_to_bootloader(hdev);
2290                 return err;
2291         }
2292
2293         /* The hardware platform number has a fixed value of 0x37 and
2294          * for now only accept this single value.
2295          */
2296         if (ver.hw_platform != 0x37) {
2297                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2298                            ver.hw_platform);
2299                 return -EINVAL;
2300         }
2301
2302         /* Check for supported iBT hardware variants of this firmware
2303          * loading method.
2304          *
2305          * This check has been put in place to ensure correct forward
2306          * compatibility options when newer hardware variants come along.
2307          */
2308         switch (ver.hw_variant) {
2309         case 0x0b:      /* SfP */
2310         case 0x0c:      /* WsP */
2311         case 0x11:      /* JfP */
2312         case 0x12:      /* ThP */
2313         case 0x13:      /* HrP */
2314         case 0x14:      /* CcP */
2315                 break;
2316         default:
2317                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2318                            ver.hw_variant);
2319                 return -EINVAL;
2320         }
2321
2322         btintel_version_info(hdev, &ver);
2323
2324         /* The firmware variant determines if the device is in bootloader
2325          * mode or is running operational firmware. The value 0x06 identifies
2326          * the bootloader and the value 0x23 identifies the operational
2327          * firmware.
2328          *
2329          * When the operational firmware is already present, then only
2330          * the check for valid Bluetooth device address is needed. This
2331          * determines if the device will be added as configured or
2332          * unconfigured controller.
2333          *
2334          * It is not possible to use the Secure Boot Parameters in this
2335          * case since that command is only available in bootloader mode.
2336          */
2337         if (ver.fw_variant == 0x23) {
2338                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2339                 btintel_check_bdaddr(hdev);
2340                 goto finish;
2341         }
2342
2343         /* If the device is not in bootloader mode, then the only possible
2344          * choice is to return an error and abort the device initialization.
2345          */
2346         if (ver.fw_variant != 0x06) {
2347                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2348                            ver.fw_variant);
2349                 return -ENODEV;
2350         }
2351
2352         /* Read the secure boot parameters to identify the operating
2353          * details of the bootloader.
2354          */
2355         err = btintel_read_boot_params(hdev, &params);
2356         if (err)
2357                 return err;
2358
2359         /* It is required that every single firmware fragment is acknowledged
2360          * with a command complete event. If the boot parameters indicate
2361          * that this bootloader does not send them, then abort the setup.
2362          */
2363         if (params.limited_cce != 0x00) {
2364                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2365                            params.limited_cce);
2366                 return -EINVAL;
2367         }
2368
2369         /* If the OTP has no valid Bluetooth device address, then there will
2370          * also be no valid address for the operational firmware.
2371          */
2372         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2373                 bt_dev_info(hdev, "No device address configured");
2374                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2375         }
2376
2377         /* With this Intel bootloader only the hardware variant and device
2378          * revision information are used to select the right firmware for SfP
2379          * and WsP.
2380          *
2381          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2382          *
2383          * Currently the supported hardware variants are:
2384          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2385          *   12 (0x0c) for iBT3.5 (WsP)
2386          *
2387          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2388          * variant, HW revision and FW revision, as these are dependent on CNVi
2389          * and RF Combination.
2390          *
2391          *   17 (0x11) for iBT3.5 (JfP)
2392          *   18 (0x12) for iBT3.5 (ThP)
2393          *
2394          * The firmware file name for these will be
2395          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2396          *
2397          */
2398         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2399                                                 sizeof(fwname), "sfi");
2400         if (!err) {
2401                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2402                 return -EINVAL;
2403         }
2404
2405         err = request_firmware(&fw, fwname, &hdev->dev);
2406         if (err < 0) {
2407                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2408                 return err;
2409         }
2410
2411         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2412
2413         /* Save the DDC file name for later use to apply once the firmware
2414          * downloading is done.
2415          */
2416         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2417                                                 sizeof(fwname), "ddc");
2418         if (!err) {
2419                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2420                 return -EINVAL;
2421         }
2422
2423         if (fw->size < 644) {
2424                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2425                            fw->size);
2426                 err = -EBADF;
2427                 goto done;
2428         }
2429
2430         set_bit(BTUSB_DOWNLOADING, &data->flags);
2431
2432         /* Start firmware downloading and get boot parameter */
2433         err = btintel_download_firmware(hdev, fw, &boot_param);
2434         if (err < 0) {
2435                 /* When FW download fails, send Intel Reset to retry
2436                  * FW download.
2437                  */
2438                 btintel_reset_to_bootloader(hdev);
2439                 goto done;
2440         }
2441         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2442
2443         bt_dev_info(hdev, "Waiting for firmware download to complete");
2444
2445         /* Before switching the device into operational mode and with that
2446          * booting the loaded firmware, wait for the bootloader notification
2447          * that all fragments have been successfully received.
2448          *
2449          * When the event processing receives the notification, then the
2450          * BTUSB_DOWNLOADING flag will be cleared.
2451          *
2452          * The firmware loading should not take longer than 5 seconds
2453          * and thus just timeout if that happens and fail the setup
2454          * of this device.
2455          */
2456         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2457                                   TASK_INTERRUPTIBLE,
2458                                   msecs_to_jiffies(5000));
2459         if (err == -EINTR) {
2460                 bt_dev_err(hdev, "Firmware loading interrupted");
2461                 goto done;
2462         }
2463
2464         if (err) {
2465                 bt_dev_err(hdev, "Firmware loading timeout");
2466                 err = -ETIMEDOUT;
2467                 btintel_reset_to_bootloader(hdev);
2468                 goto done;
2469         }
2470
2471         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2472                 bt_dev_err(hdev, "Firmware loading failed");
2473                 err = -ENOEXEC;
2474                 goto done;
2475         }
2476
2477         rettime = ktime_get();
2478         delta = ktime_sub(rettime, calltime);
2479         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2480
2481         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2482
2483 done:
2484         release_firmware(fw);
2485
2486         if (err < 0)
2487                 return err;
2488
2489         calltime = ktime_get();
2490
2491         set_bit(BTUSB_BOOTING, &data->flags);
2492
2493         err = btintel_send_intel_reset(hdev, boot_param);
2494         if (err) {
2495                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2496                 btintel_reset_to_bootloader(hdev);
2497                 return err;
2498         }
2499
2500         /* The bootloader will not indicate when the device is ready. This
2501          * is done by the operational firmware sending bootup notification.
2502          *
2503          * Booting into operational firmware should not take longer than
2504          * 1 second. However if that happens, then just fail the setup
2505          * since something went wrong.
2506          */
2507         bt_dev_info(hdev, "Waiting for device to boot");
2508
2509         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2510                                   TASK_INTERRUPTIBLE,
2511                                   msecs_to_jiffies(1000));
2512
2513         if (err == -EINTR) {
2514                 bt_dev_err(hdev, "Device boot interrupted");
2515                 return -EINTR;
2516         }
2517
2518         if (err) {
2519                 bt_dev_err(hdev, "Device boot timeout");
2520                 btintel_reset_to_bootloader(hdev);
2521                 return -ETIMEDOUT;
2522         }
2523
2524         rettime = ktime_get();
2525         delta = ktime_sub(rettime, calltime);
2526         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2527
2528         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2529
2530         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2531
2532         /* Once the device is running in operational mode, it needs to apply
2533          * the device configuration (DDC) parameters.
2534          *
2535          * The device can work without DDC parameters, so even if it fails
2536          * to load the file, no need to fail the setup.
2537          */
2538         btintel_load_ddc_config(hdev, fwname);
2539
2540         /* Read the Intel version information after loading the FW  */
2541         err = btintel_read_version(hdev, &ver);
2542         if (err)
2543                 return err;
2544
2545         btintel_version_info(hdev, &ver);
2546
2547 finish:
2548         /* All Intel controllers that support the Microsoft vendor
2549          * extension are using 0xFC1E for VsMsftOpCode.
2550          */
2551         switch (ver.hw_variant) {
2552         case 0x12:      /* ThP */
2553                 hci_set_msft_opcode(hdev, 0xFC1E);
2554                 break;
2555         }
2556
2557         /* Set the event mask for Intel specific vendor events. This enables
2558          * a few extra events that are useful during general operation. It
2559          * does not enable any debugging related events.
2560          *
2561          * The device will function correctly without these events enabled
2562          * and thus no need to fail the setup.
2563          */
2564         btintel_set_event_mask(hdev, false);
2565
2566         return 0;
2567 }
2568
2569 static int btusb_shutdown_intel(struct hci_dev *hdev)
2570 {
2571         struct sk_buff *skb;
2572         long ret;
2573
2574         /* In the shutdown sequence where Bluetooth is turned off followed
2575          * by WiFi being turned off, turning WiFi back on causes issue with
2576          * the RF calibration.
2577          *
2578          * To ensure that any RF activity has been stopped, issue HCI Reset
2579          * command to clear all ongoing activity including advertising,
2580          * scanning etc.
2581          */
2582         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2583         if (IS_ERR(skb)) {
2584                 ret = PTR_ERR(skb);
2585                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2586                 return ret;
2587         }
2588         kfree_skb(skb);
2589
2590         /* Some platforms have an issue with BT LED when the interface is
2591          * down or BT radio is turned off, which takes 5 seconds to BT LED
2592          * goes off. This command turns off the BT LED immediately.
2593          */
2594         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2595         if (IS_ERR(skb)) {
2596                 ret = PTR_ERR(skb);
2597                 bt_dev_err(hdev, "turning off Intel device LED failed");
2598                 return ret;
2599         }
2600         kfree_skb(skb);
2601
2602         return 0;
2603 }
2604
2605 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2606 {
2607         struct sk_buff *skb;
2608
2609         /* Send HCI Reset to the controller to stop any BT activity which
2610          * were triggered. This will help to save power and maintain the
2611          * sync b/w Host and controller
2612          */
2613         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2614         if (IS_ERR(skb)) {
2615                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2616                 return PTR_ERR(skb);
2617         }
2618         kfree_skb(skb);
2619
2620         return 0;
2621 }
2622
2623 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2624 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2625
2626 #define HCI_WMT_MAX_EVENT_SIZE          64
2627
2628 enum {
2629         BTMTK_WMT_PATCH_DWNLD = 0x1,
2630         BTMTK_WMT_FUNC_CTRL = 0x6,
2631         BTMTK_WMT_RST = 0x7,
2632         BTMTK_WMT_SEMAPHORE = 0x17,
2633 };
2634
2635 enum {
2636         BTMTK_WMT_INVALID,
2637         BTMTK_WMT_PATCH_UNDONE,
2638         BTMTK_WMT_PATCH_DONE,
2639         BTMTK_WMT_ON_UNDONE,
2640         BTMTK_WMT_ON_DONE,
2641         BTMTK_WMT_ON_PROGRESS,
2642 };
2643
2644 struct btmtk_wmt_hdr {
2645         u8      dir;
2646         u8      op;
2647         __le16  dlen;
2648         u8      flag;
2649 } __packed;
2650
2651 struct btmtk_hci_wmt_cmd {
2652         struct btmtk_wmt_hdr hdr;
2653         u8 data[256];
2654 } __packed;
2655
2656 struct btmtk_hci_wmt_evt {
2657         struct hci_event_hdr hhdr;
2658         struct btmtk_wmt_hdr whdr;
2659 } __packed;
2660
2661 struct btmtk_hci_wmt_evt_funcc {
2662         struct btmtk_hci_wmt_evt hwhdr;
2663         __be16 status;
2664 } __packed;
2665
2666 struct btmtk_tci_sleep {
2667         u8 mode;
2668         __le16 duration;
2669         __le16 host_duration;
2670         u8 host_wakeup_pin;
2671         u8 time_compensation;
2672 } __packed;
2673
2674 struct btmtk_hci_wmt_params {
2675         u8 op;
2676         u8 flag;
2677         u16 dlen;
2678         const void *data;
2679         u32 *status;
2680 };
2681
2682 static void btusb_mtk_wmt_recv(struct urb *urb)
2683 {
2684         struct hci_dev *hdev = urb->context;
2685         struct btusb_data *data = hci_get_drvdata(hdev);
2686         struct hci_event_hdr *hdr;
2687         struct sk_buff *skb;
2688         int err;
2689
2690         if (urb->status == 0 && urb->actual_length > 0) {
2691                 hdev->stat.byte_rx += urb->actual_length;
2692
2693                 /* WMT event shouldn't be fragmented and the size should be
2694                  * less than HCI_WMT_MAX_EVENT_SIZE.
2695                  */
2696                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2697                 if (!skb) {
2698                         hdev->stat.err_rx++;
2699                         goto err_out;
2700                 }
2701
2702                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2703                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2704
2705                 hdr = (void *)skb->data;
2706                 /* Fix up the vendor event id with 0xff for vendor specific
2707                  * instead of 0xe4 so that event send via monitoring socket can
2708                  * be parsed properly.
2709                  */
2710                 hdr->evt = 0xff;
2711
2712                 /* When someone waits for the WMT event, the skb is being cloned
2713                  * and being processed the events from there then.
2714                  */
2715                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2716                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2717                         if (!data->evt_skb)
2718                                 goto err_out;
2719                 }
2720
2721                 err = hci_recv_frame(hdev, skb);
2722                 if (err < 0)
2723                         goto err_free_skb;
2724
2725                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2726                                        &data->flags)) {
2727                         /* Barrier to sync with other CPUs */
2728                         smp_mb__after_atomic();
2729                         wake_up_bit(&data->flags,
2730                                     BTUSB_TX_WAIT_VND_EVT);
2731                 }
2732 err_out:
2733                 return;
2734 err_free_skb:
2735                 kfree_skb(data->evt_skb);
2736                 data->evt_skb = NULL;
2737                 return;
2738         } else if (urb->status == -ENOENT) {
2739                 /* Avoid suspend failed when usb_kill_urb */
2740                 return;
2741         }
2742
2743         usb_mark_last_busy(data->udev);
2744
2745         /* The URB complete handler is still called with urb->actual_length = 0
2746          * when the event is not available, so we should keep re-submitting
2747          * URB until WMT event returns, Also, It's necessary to wait some time
2748          * between the two consecutive control URBs to relax the target device
2749          * to generate the event. Otherwise, the WMT event cannot return from
2750          * the device successfully.
2751          */
2752         udelay(100);
2753
2754         usb_anchor_urb(urb, &data->ctrl_anchor);
2755         err = usb_submit_urb(urb, GFP_ATOMIC);
2756         if (err < 0) {
2757                 /* -EPERM: urb is being killed;
2758                  * -ENODEV: device got disconnected
2759                  */
2760                 if (err != -EPERM && err != -ENODEV)
2761                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2762                                    urb, -err);
2763                 usb_unanchor_urb(urb);
2764         }
2765 }
2766
2767 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2768 {
2769         struct btusb_data *data = hci_get_drvdata(hdev);
2770         struct usb_ctrlrequest *dr;
2771         unsigned char *buf;
2772         int err, size = 64;
2773         unsigned int pipe;
2774         struct urb *urb;
2775
2776         urb = usb_alloc_urb(0, GFP_KERNEL);
2777         if (!urb)
2778                 return -ENOMEM;
2779
2780         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2781         if (!dr) {
2782                 usb_free_urb(urb);
2783                 return -ENOMEM;
2784         }
2785
2786         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2787         dr->bRequest     = 1;
2788         dr->wIndex       = cpu_to_le16(0);
2789         dr->wValue       = cpu_to_le16(48);
2790         dr->wLength      = cpu_to_le16(size);
2791
2792         buf = kmalloc(size, GFP_KERNEL);
2793         if (!buf) {
2794                 kfree(dr);
2795                 return -ENOMEM;
2796         }
2797
2798         pipe = usb_rcvctrlpipe(data->udev, 0);
2799
2800         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2801                              buf, size, btusb_mtk_wmt_recv, hdev);
2802
2803         urb->transfer_flags |= URB_FREE_BUFFER;
2804
2805         usb_anchor_urb(urb, &data->ctrl_anchor);
2806         err = usb_submit_urb(urb, GFP_KERNEL);
2807         if (err < 0) {
2808                 if (err != -EPERM && err != -ENODEV)
2809                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2810                                    urb, -err);
2811                 usb_unanchor_urb(urb);
2812         }
2813
2814         usb_free_urb(urb);
2815
2816         return err;
2817 }
2818
2819 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2820                                   struct btmtk_hci_wmt_params *wmt_params)
2821 {
2822         struct btusb_data *data = hci_get_drvdata(hdev);
2823         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2824         u32 hlen, status = BTMTK_WMT_INVALID;
2825         struct btmtk_hci_wmt_evt *wmt_evt;
2826         struct btmtk_hci_wmt_cmd wc;
2827         struct btmtk_wmt_hdr *hdr;
2828         int err;
2829
2830         /* Submit control IN URB on demand to process the WMT event */
2831         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2832         if (err < 0)
2833                 return err;
2834
2835         /* Send the WMT command and wait until the WMT event returns */
2836         hlen = sizeof(*hdr) + wmt_params->dlen;
2837         if (hlen > 255)
2838                 return -EINVAL;
2839
2840         hdr = (struct btmtk_wmt_hdr *)&wc;
2841         hdr->dir = 1;
2842         hdr->op = wmt_params->op;
2843         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2844         hdr->flag = wmt_params->flag;
2845         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2846
2847         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2848
2849         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2850
2851         if (err < 0) {
2852                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2853                 return err;
2854         }
2855
2856         /* The vendor specific WMT commands are all answered by a vendor
2857          * specific event and will have the Command Status or Command
2858          * Complete as with usual HCI command flow control.
2859          *
2860          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2861          * state to be cleared. The driver specific event receive routine
2862          * will clear that state and with that indicate completion of the
2863          * WMT command.
2864          */
2865         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2866                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2867         if (err == -EINTR) {
2868                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2869                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2870                 return err;
2871         }
2872
2873         if (err) {
2874                 bt_dev_err(hdev, "Execution of wmt command timed out");
2875                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2876                 return -ETIMEDOUT;
2877         }
2878
2879         /* Parse and handle the return WMT event */
2880         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2881         if (wmt_evt->whdr.op != hdr->op) {
2882                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2883                            wmt_evt->whdr.op, hdr->op);
2884                 err = -EIO;
2885                 goto err_free_skb;
2886         }
2887
2888         switch (wmt_evt->whdr.op) {
2889         case BTMTK_WMT_SEMAPHORE:
2890                 if (wmt_evt->whdr.flag == 2)
2891                         status = BTMTK_WMT_PATCH_UNDONE;
2892                 else
2893                         status = BTMTK_WMT_PATCH_DONE;
2894                 break;
2895         case BTMTK_WMT_FUNC_CTRL:
2896                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2897                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2898                         status = BTMTK_WMT_ON_DONE;
2899                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2900                         status = BTMTK_WMT_ON_PROGRESS;
2901                 else
2902                         status = BTMTK_WMT_ON_UNDONE;
2903                 break;
2904         }
2905
2906         if (wmt_params->status)
2907                 *wmt_params->status = status;
2908
2909 err_free_skb:
2910         kfree_skb(data->evt_skb);
2911         data->evt_skb = NULL;
2912
2913         return err;
2914 }
2915
2916 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2917 {
2918         struct btmtk_hci_wmt_params wmt_params;
2919         const struct firmware *fw;
2920         const u8 *fw_ptr;
2921         size_t fw_size;
2922         int err, dlen;
2923         u8 flag;
2924
2925         err = request_firmware(&fw, fwname, &hdev->dev);
2926         if (err < 0) {
2927                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2928                 return err;
2929         }
2930
2931         fw_ptr = fw->data;
2932         fw_size = fw->size;
2933
2934         /* The size of patch header is 30 bytes, should be skip */
2935         if (fw_size < 30) {
2936                 err = -EINVAL;
2937                 goto err_release_fw;
2938         }
2939
2940         fw_size -= 30;
2941         fw_ptr += 30;
2942         flag = 1;
2943
2944         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2945         wmt_params.status = NULL;
2946
2947         while (fw_size > 0) {
2948                 dlen = min_t(int, 250, fw_size);
2949
2950                 /* Tell deivice the position in sequence */
2951                 if (fw_size - dlen <= 0)
2952                         flag = 3;
2953                 else if (fw_size < fw->size - 30)
2954                         flag = 2;
2955
2956                 wmt_params.flag = flag;
2957                 wmt_params.dlen = dlen;
2958                 wmt_params.data = fw_ptr;
2959
2960                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2961                 if (err < 0) {
2962                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2963                                    err);
2964                         goto err_release_fw;
2965                 }
2966
2967                 fw_size -= dlen;
2968                 fw_ptr += dlen;
2969         }
2970
2971         wmt_params.op = BTMTK_WMT_RST;
2972         wmt_params.flag = 4;
2973         wmt_params.dlen = 0;
2974         wmt_params.data = NULL;
2975         wmt_params.status = NULL;
2976
2977         /* Activate funciton the firmware providing to */
2978         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2979         if (err < 0) {
2980                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2981                 goto err_release_fw;
2982         }
2983
2984         /* Wait a few moments for firmware activation done */
2985         usleep_range(10000, 12000);
2986
2987 err_release_fw:
2988         release_firmware(fw);
2989
2990         return err;
2991 }
2992
2993 static int btusb_mtk_func_query(struct hci_dev *hdev)
2994 {
2995         struct btmtk_hci_wmt_params wmt_params;
2996         int status, err;
2997         u8 param = 0;
2998
2999         /* Query whether the function is enabled */
3000         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3001         wmt_params.flag = 4;
3002         wmt_params.dlen = sizeof(param);
3003         wmt_params.data = &param;
3004         wmt_params.status = &status;
3005
3006         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3007         if (err < 0) {
3008                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3009                 return err;
3010         }
3011
3012         return status;
3013 }
3014
3015 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3016 {
3017         int pipe, err, size = sizeof(u32);
3018         void *buf;
3019
3020         buf = kzalloc(size, GFP_KERNEL);
3021         if (!buf)
3022                 return -ENOMEM;
3023
3024         pipe = usb_rcvctrlpipe(data->udev, 0);
3025         err = usb_control_msg(data->udev, pipe, 0x63,
3026                               USB_TYPE_VENDOR | USB_DIR_IN,
3027                               reg >> 16, reg & 0xffff,
3028                               buf, size, USB_CTRL_SET_TIMEOUT);
3029         if (err < 0)
3030                 goto err_free_buf;
3031
3032         *val = get_unaligned_le32(buf);
3033
3034 err_free_buf:
3035         kfree(buf);
3036
3037         return err;
3038 }
3039
3040 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
3041 {
3042         return btusb_mtk_reg_read(data, 0x80000008, id);
3043 }
3044
3045 static int btusb_mtk_setup(struct hci_dev *hdev)
3046 {
3047         struct btusb_data *data = hci_get_drvdata(hdev);
3048         struct btmtk_hci_wmt_params wmt_params;
3049         ktime_t calltime, delta, rettime;
3050         struct btmtk_tci_sleep tci_sleep;
3051         unsigned long long duration;
3052         struct sk_buff *skb;
3053         const char *fwname;
3054         int err, status;
3055         u32 dev_id;
3056         u8 param;
3057
3058         calltime = ktime_get();
3059
3060         err = btusb_mtk_id_get(data, &dev_id);
3061         if (err < 0) {
3062                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3063                 return err;
3064         }
3065
3066         switch (dev_id) {
3067         case 0x7663:
3068                 fwname = FIRMWARE_MT7663;
3069                 break;
3070         case 0x7668:
3071                 fwname = FIRMWARE_MT7668;
3072                 break;
3073         default:
3074                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3075                            dev_id);
3076                 return -ENODEV;
3077         }
3078
3079         /* Query whether the firmware is already download */
3080         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3081         wmt_params.flag = 1;
3082         wmt_params.dlen = 0;
3083         wmt_params.data = NULL;
3084         wmt_params.status = &status;
3085
3086         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3087         if (err < 0) {
3088                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3089                 return err;
3090         }
3091
3092         if (status == BTMTK_WMT_PATCH_DONE) {
3093                 bt_dev_info(hdev, "firmware already downloaded");
3094                 goto ignore_setup_fw;
3095         }
3096
3097         /* Setup a firmware which the device definitely requires */
3098         err = btusb_mtk_setup_firmware(hdev, fwname);
3099         if (err < 0)
3100                 return err;
3101
3102 ignore_setup_fw:
3103         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3104                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3105                                  2000, 5000000);
3106         /* -ETIMEDOUT happens */
3107         if (err < 0)
3108                 return err;
3109
3110         /* The other errors happen in btusb_mtk_func_query */
3111         if (status < 0)
3112                 return status;
3113
3114         if (status == BTMTK_WMT_ON_DONE) {
3115                 bt_dev_info(hdev, "function already on");
3116                 goto ignore_func_on;
3117         }
3118
3119         /* Enable Bluetooth protocol */
3120         param = 1;
3121         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3122         wmt_params.flag = 0;
3123         wmt_params.dlen = sizeof(param);
3124         wmt_params.data = &param;
3125         wmt_params.status = NULL;
3126
3127         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3128         if (err < 0) {
3129                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3130                 return err;
3131         }
3132
3133 ignore_func_on:
3134         /* Apply the low power environment setup */
3135         tci_sleep.mode = 0x5;
3136         tci_sleep.duration = cpu_to_le16(0x640);
3137         tci_sleep.host_duration = cpu_to_le16(0x640);
3138         tci_sleep.host_wakeup_pin = 0;
3139         tci_sleep.time_compensation = 0;
3140
3141         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3142                              HCI_INIT_TIMEOUT);
3143         if (IS_ERR(skb)) {
3144                 err = PTR_ERR(skb);
3145                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3146                 return err;
3147         }
3148         kfree_skb(skb);
3149
3150         rettime = ktime_get();
3151         delta = ktime_sub(rettime, calltime);
3152         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3153
3154         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3155
3156         return 0;
3157 }
3158
3159 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3160 {
3161         struct btmtk_hci_wmt_params wmt_params;
3162         u8 param = 0;
3163         int err;
3164
3165         /* Disable the device */
3166         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3167         wmt_params.flag = 0;
3168         wmt_params.dlen = sizeof(param);
3169         wmt_params.data = &param;
3170         wmt_params.status = NULL;
3171
3172         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3173         if (err < 0) {
3174                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3175                 return err;
3176         }
3177
3178         return 0;
3179 }
3180
3181 MODULE_FIRMWARE(FIRMWARE_MT7663);
3182 MODULE_FIRMWARE(FIRMWARE_MT7668);
3183
3184 #ifdef CONFIG_PM
3185 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3186 static int marvell_config_oob_wake(struct hci_dev *hdev)
3187 {
3188         struct sk_buff *skb;
3189         struct btusb_data *data = hci_get_drvdata(hdev);
3190         struct device *dev = &data->udev->dev;
3191         u16 pin, gap, opcode;
3192         int ret;
3193         u8 cmd[5];
3194
3195         /* Move on if no wakeup pin specified */
3196         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3197             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3198                 return 0;
3199
3200         /* Vendor specific command to configure a GPIO as wake-up pin */
3201         opcode = hci_opcode_pack(0x3F, 0x59);
3202         cmd[0] = opcode & 0xFF;
3203         cmd[1] = opcode >> 8;
3204         cmd[2] = 2; /* length of parameters that follow */
3205         cmd[3] = pin;
3206         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3207
3208         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3209         if (!skb) {
3210                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3211                 return -ENOMEM;
3212         }
3213
3214         skb_put_data(skb, cmd, sizeof(cmd));
3215         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3216
3217         ret = btusb_send_frame(hdev, skb);
3218         if (ret) {
3219                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3220                 kfree_skb(skb);
3221                 return ret;
3222         }
3223
3224         return 0;
3225 }
3226 #endif
3227
3228 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3229                                     const bdaddr_t *bdaddr)
3230 {
3231         struct sk_buff *skb;
3232         u8 buf[8];
3233         long ret;
3234
3235         buf[0] = 0xfe;
3236         buf[1] = sizeof(bdaddr_t);
3237         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3238
3239         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3240         if (IS_ERR(skb)) {
3241                 ret = PTR_ERR(skb);
3242                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3243                            ret);
3244                 return ret;
3245         }
3246         kfree_skb(skb);
3247
3248         return 0;
3249 }
3250
3251 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3252                                     const bdaddr_t *bdaddr)
3253 {
3254         struct sk_buff *skb;
3255         u8 buf[10];
3256         long ret;
3257
3258         buf[0] = 0x01;
3259         buf[1] = 0x01;
3260         buf[2] = 0x00;
3261         buf[3] = sizeof(bdaddr_t);
3262         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3263
3264         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3265         if (IS_ERR(skb)) {
3266                 ret = PTR_ERR(skb);
3267                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3268                 return ret;
3269         }
3270         kfree_skb(skb);
3271
3272         return 0;
3273 }
3274
3275 #define QCA_DFU_PACKET_LEN      4096
3276
3277 #define QCA_GET_TARGET_VERSION  0x09
3278 #define QCA_CHECK_STATUS        0x05
3279 #define QCA_DFU_DOWNLOAD        0x01
3280
3281 #define QCA_SYSCFG_UPDATED      0x40
3282 #define QCA_PATCH_UPDATED       0x80
3283 #define QCA_DFU_TIMEOUT         3000
3284
3285 struct qca_version {
3286         __le32  rom_version;
3287         __le32  patch_version;
3288         __le32  ram_version;
3289         __le32  ref_clock;
3290         __u8    reserved[4];
3291 } __packed;
3292
3293 struct qca_rampatch_version {
3294         __le16  rom_version;
3295         __le16  patch_version;
3296 } __packed;
3297
3298 struct qca_device_info {
3299         u32     rom_version;
3300         u8      rampatch_hdr;   /* length of header in rampatch */
3301         u8      nvm_hdr;        /* length of header in NVM */
3302         u8      ver_offset;     /* offset of version structure in rampatch */
3303 };
3304
3305 static const struct qca_device_info qca_devices_table[] = {
3306         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3307         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3308         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3309         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3310         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3311         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3312 };
3313
3314 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3315                                      void *data, u16 size)
3316 {
3317         int pipe, err;
3318         u8 *buf;
3319
3320         buf = kmalloc(size, GFP_KERNEL);
3321         if (!buf)
3322                 return -ENOMEM;
3323
3324         /* Found some of USB hosts have IOT issues with ours so that we should
3325          * not wait until HCI layer is ready.
3326          */
3327         pipe = usb_rcvctrlpipe(udev, 0);
3328         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3329                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3330         if (err < 0) {
3331                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3332                 goto done;
3333         }
3334
3335         memcpy(data, buf, size);
3336
3337 done:
3338         kfree(buf);
3339
3340         return err;
3341 }
3342
3343 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3344                                        const struct firmware *firmware,
3345                                        size_t hdr_size)
3346 {
3347         struct btusb_data *btdata = hci_get_drvdata(hdev);
3348         struct usb_device *udev = btdata->udev;
3349         size_t count, size, sent = 0;
3350         int pipe, len, err;
3351         u8 *buf;
3352
3353         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3354         if (!buf)
3355                 return -ENOMEM;
3356
3357         count = firmware->size;
3358
3359         size = min_t(size_t, count, hdr_size);
3360         memcpy(buf, firmware->data, size);
3361
3362         /* USB patches should go down to controller through USB path
3363          * because binary format fits to go down through USB channel.
3364          * USB control path is for patching headers and USB bulk is for
3365          * patch body.
3366          */
3367         pipe = usb_sndctrlpipe(udev, 0);
3368         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3369                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3370         if (err < 0) {
3371                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3372                 goto done;
3373         }
3374
3375         sent += size;
3376         count -= size;
3377
3378         while (count) {
3379                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3380
3381                 memcpy(buf, firmware->data + sent, size);
3382
3383                 pipe = usb_sndbulkpipe(udev, 0x02);
3384                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3385                                    QCA_DFU_TIMEOUT);
3386                 if (err < 0) {
3387                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3388                                    sent, firmware->size, err);
3389                         break;
3390                 }
3391
3392                 if (size != len) {
3393                         bt_dev_err(hdev, "Failed to get bulk buffer");
3394                         err = -EILSEQ;
3395                         break;
3396                 }
3397
3398                 sent  += size;
3399                 count -= size;
3400         }
3401
3402 done:
3403         kfree(buf);
3404         return err;
3405 }
3406
3407 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3408                                          struct qca_version *ver,
3409                                          const struct qca_device_info *info)
3410 {
3411         struct qca_rampatch_version *rver;
3412         const struct firmware *fw;
3413         u32 ver_rom, ver_patch;
3414         u16 rver_rom, rver_patch;
3415         char fwname[64];
3416         int err;
3417
3418         ver_rom = le32_to_cpu(ver->rom_version);
3419         ver_patch = le32_to_cpu(ver->patch_version);
3420
3421         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3422
3423         err = request_firmware(&fw, fwname, &hdev->dev);
3424         if (err) {
3425                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3426                            fwname, err);
3427                 return err;
3428         }
3429
3430         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3431
3432         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3433         rver_rom = le16_to_cpu(rver->rom_version);
3434         rver_patch = le16_to_cpu(rver->patch_version);
3435
3436         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3437                     "firmware rome 0x%x build 0x%x",
3438                     rver_rom, rver_patch, ver_rom, ver_patch);
3439
3440         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3441                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3442                 err = -EINVAL;
3443                 goto done;
3444         }
3445
3446         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3447
3448 done:
3449         release_firmware(fw);
3450
3451         return err;
3452 }
3453
3454 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3455                                     struct qca_version *ver,
3456                                     const struct qca_device_info *info)
3457 {
3458         const struct firmware *fw;
3459         char fwname[64];
3460         int err;
3461
3462         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3463                  le32_to_cpu(ver->rom_version));
3464
3465         err = request_firmware(&fw, fwname, &hdev->dev);
3466         if (err) {
3467                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3468                            fwname, err);
3469                 return err;
3470         }
3471
3472         bt_dev_info(hdev, "using NVM file: %s", fwname);
3473
3474         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3475
3476         release_firmware(fw);
3477
3478         return err;
3479 }
3480
3481 /* identify the ROM version and check whether patches are needed */
3482 static bool btusb_qca_need_patch(struct usb_device *udev)
3483 {
3484         struct qca_version ver;
3485
3486         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3487                                       sizeof(ver)) < 0)
3488                 return false;
3489         /* only low ROM versions need patches */
3490         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3491 }
3492
3493 static int btusb_setup_qca(struct hci_dev *hdev)
3494 {
3495         struct btusb_data *btdata = hci_get_drvdata(hdev);
3496         struct usb_device *udev = btdata->udev;
3497         const struct qca_device_info *info = NULL;
3498         struct qca_version ver;
3499         u32 ver_rom;
3500         u8 status;
3501         int i, err;
3502
3503         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3504                                         sizeof(ver));
3505         if (err < 0)
3506                 return err;
3507
3508         ver_rom = le32_to_cpu(ver.rom_version);
3509         /* Don't care about high ROM versions */
3510         if (ver_rom & ~0xffffU)
3511                 return 0;
3512
3513         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3514                 if (ver_rom == qca_devices_table[i].rom_version)
3515                         info = &qca_devices_table[i];
3516         }
3517         if (!info) {
3518                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3519                 return -ENODEV;
3520         }
3521
3522         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3523                                         sizeof(status));
3524         if (err < 0)
3525                 return err;
3526
3527         if (!(status & QCA_PATCH_UPDATED)) {
3528                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3529                 if (err < 0)
3530                         return err;
3531         }
3532
3533         if (!(status & QCA_SYSCFG_UPDATED)) {
3534                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3535                 if (err < 0)
3536                         return err;
3537         }
3538
3539         return 0;
3540 }
3541
3542 static inline int __set_diag_interface(struct hci_dev *hdev)
3543 {
3544         struct btusb_data *data = hci_get_drvdata(hdev);
3545         struct usb_interface *intf = data->diag;
3546         int i;
3547
3548         if (!data->diag)
3549                 return -ENODEV;
3550
3551         data->diag_tx_ep = NULL;
3552         data->diag_rx_ep = NULL;
3553
3554         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3555                 struct usb_endpoint_descriptor *ep_desc;
3556
3557                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3558
3559                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3560                         data->diag_tx_ep = ep_desc;
3561                         continue;
3562                 }
3563
3564                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3565                         data->diag_rx_ep = ep_desc;
3566                         continue;
3567                 }
3568         }
3569
3570         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3571                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3572                 return -ENODEV;
3573         }
3574
3575         return 0;
3576 }
3577
3578 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3579 {
3580         struct btusb_data *data = hci_get_drvdata(hdev);
3581         struct sk_buff *skb;
3582         struct urb *urb;
3583         unsigned int pipe;
3584
3585         if (!data->diag_tx_ep)
3586                 return ERR_PTR(-ENODEV);
3587
3588         urb = usb_alloc_urb(0, GFP_KERNEL);
3589         if (!urb)
3590                 return ERR_PTR(-ENOMEM);
3591
3592         skb = bt_skb_alloc(2, GFP_KERNEL);
3593         if (!skb) {
3594                 usb_free_urb(urb);
3595                 return ERR_PTR(-ENOMEM);
3596         }
3597
3598         skb_put_u8(skb, 0xf0);
3599         skb_put_u8(skb, enable);
3600
3601         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3602
3603         usb_fill_bulk_urb(urb, data->udev, pipe,
3604                           skb->data, skb->len, btusb_tx_complete, skb);
3605
3606         skb->dev = (void *)hdev;
3607
3608         return urb;
3609 }
3610
3611 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3612 {
3613         struct btusb_data *data = hci_get_drvdata(hdev);
3614         struct urb *urb;
3615
3616         if (!data->diag)
3617                 return -ENODEV;
3618
3619         if (!test_bit(HCI_RUNNING, &hdev->flags))
3620                 return -ENETDOWN;
3621
3622         urb = alloc_diag_urb(hdev, enable);
3623         if (IS_ERR(urb))
3624                 return PTR_ERR(urb);
3625
3626         return submit_or_queue_tx_urb(hdev, urb);
3627 }
3628
3629 #ifdef CONFIG_PM
3630 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3631 {
3632         struct btusb_data *data = priv;
3633
3634         pm_wakeup_event(&data->udev->dev, 0);
3635         pm_system_wakeup();
3636
3637         /* Disable only if not already disabled (keep it balanced) */
3638         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3639                 disable_irq_nosync(irq);
3640                 disable_irq_wake(irq);
3641         }
3642         return IRQ_HANDLED;
3643 }
3644
3645 static const struct of_device_id btusb_match_table[] = {
3646         { .compatible = "usb1286,204e" },
3647         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3648         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3649         { }
3650 };
3651 MODULE_DEVICE_TABLE(of, btusb_match_table);
3652
3653 /* Use an oob wakeup pin? */
3654 static int btusb_config_oob_wake(struct hci_dev *hdev)
3655 {
3656         struct btusb_data *data = hci_get_drvdata(hdev);
3657         struct device *dev = &data->udev->dev;
3658         int irq, ret;
3659
3660         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3661
3662         if (!of_match_device(btusb_match_table, dev))
3663                 return 0;
3664
3665         /* Move on if no IRQ specified */
3666         irq = of_irq_get_byname(dev->of_node, "wakeup");
3667         if (irq <= 0) {
3668                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3669                 return 0;
3670         }
3671
3672         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3673         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3674                                0, "OOB Wake-on-BT", data);
3675         if (ret) {
3676                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3677                 return ret;
3678         }
3679
3680         ret = device_init_wakeup(dev, true);
3681         if (ret) {
3682                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3683                 return ret;
3684         }
3685
3686         data->oob_wake_irq = irq;
3687         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3688         return 0;
3689 }
3690 #endif
3691
3692 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3693 {
3694         if (dmi_check_system(btusb_needs_reset_resume_table))
3695                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3696 }
3697
3698 static int btusb_probe(struct usb_interface *intf,
3699                        const struct usb_device_id *id)
3700 {
3701         struct usb_endpoint_descriptor *ep_desc;
3702         struct gpio_desc *reset_gpio;
3703         struct btusb_data *data;
3704         struct hci_dev *hdev;
3705         unsigned ifnum_base;
3706         int i, err;
3707
3708         BT_DBG("intf %p id %p", intf, id);
3709
3710         /* interface numbers are hardcoded in the spec */
3711         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3712                 if (!(id->driver_info & BTUSB_IFNUM_2))
3713                         return -ENODEV;
3714                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3715                         return -ENODEV;
3716         }
3717
3718         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3719
3720         if (!id->driver_info) {
3721                 const struct usb_device_id *match;
3722
3723                 match = usb_match_id(intf, blacklist_table);
3724                 if (match)
3725                         id = match;
3726         }
3727
3728         if (id->driver_info == BTUSB_IGNORE)
3729                 return -ENODEV;
3730
3731         if (id->driver_info & BTUSB_ATH3012) {
3732                 struct usb_device *udev = interface_to_usbdev(intf);
3733
3734                 /* Old firmware would otherwise let ath3k driver load
3735                  * patch and sysconfig files
3736                  */
3737                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3738                     !btusb_qca_need_patch(udev))
3739                         return -ENODEV;
3740         }
3741
3742         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3743         if (!data)
3744                 return -ENOMEM;
3745
3746         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3747                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3748
3749                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3750                         data->intr_ep = ep_desc;
3751                         continue;
3752                 }
3753
3754                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3755                         data->bulk_tx_ep = ep_desc;
3756                         continue;
3757                 }
3758
3759                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3760                         data->bulk_rx_ep = ep_desc;
3761                         continue;
3762                 }
3763         }
3764
3765         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3766                 return -ENODEV;
3767
3768         if (id->driver_info & BTUSB_AMP) {
3769                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3770                 data->cmdreq = 0x2b;
3771         } else {
3772                 data->cmdreq_type = USB_TYPE_CLASS;
3773                 data->cmdreq = 0x00;
3774         }
3775
3776         data->udev = interface_to_usbdev(intf);
3777         data->intf = intf;
3778
3779         INIT_WORK(&data->work, btusb_work);
3780         INIT_WORK(&data->waker, btusb_waker);
3781         init_usb_anchor(&data->deferred);
3782         init_usb_anchor(&data->tx_anchor);
3783         spin_lock_init(&data->txlock);
3784
3785         init_usb_anchor(&data->intr_anchor);
3786         init_usb_anchor(&data->bulk_anchor);
3787         init_usb_anchor(&data->isoc_anchor);
3788         init_usb_anchor(&data->diag_anchor);
3789         init_usb_anchor(&data->ctrl_anchor);
3790         spin_lock_init(&data->rxlock);
3791
3792         if (id->driver_info & BTUSB_INTEL_NEW) {
3793                 data->recv_event = btusb_recv_event_intel;
3794                 data->recv_bulk = btusb_recv_bulk_intel;
3795                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3796         } else {
3797                 data->recv_event = hci_recv_frame;
3798                 data->recv_bulk = btusb_recv_bulk;
3799         }
3800
3801         hdev = hci_alloc_dev();
3802         if (!hdev)
3803                 return -ENOMEM;
3804
3805         hdev->bus = HCI_USB;
3806         hci_set_drvdata(hdev, data);
3807
3808         if (id->driver_info & BTUSB_AMP)
3809                 hdev->dev_type = HCI_AMP;
3810         else
3811                 hdev->dev_type = HCI_PRIMARY;
3812
3813         data->hdev = hdev;
3814
3815         SET_HCIDEV_DEV(hdev, &intf->dev);
3816
3817         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3818                                         GPIOD_OUT_LOW);
3819         if (IS_ERR(reset_gpio)) {
3820                 err = PTR_ERR(reset_gpio);
3821                 goto out_free_dev;
3822         } else if (reset_gpio) {
3823                 data->reset_gpio = reset_gpio;
3824         }
3825
3826         hdev->open   = btusb_open;
3827         hdev->close  = btusb_close;
3828         hdev->flush  = btusb_flush;
3829         hdev->send   = btusb_send_frame;
3830         hdev->notify = btusb_notify;
3831
3832 #ifdef CONFIG_PM
3833         err = btusb_config_oob_wake(hdev);
3834         if (err)
3835                 goto out_free_dev;
3836
3837         /* Marvell devices may need a specific chip configuration */
3838         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3839                 err = marvell_config_oob_wake(hdev);
3840                 if (err)
3841                         goto out_free_dev;
3842         }
3843 #endif
3844         if (id->driver_info & BTUSB_CW6622)
3845                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3846
3847         if (id->driver_info & BTUSB_BCM2045)
3848                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3849
3850         if (id->driver_info & BTUSB_BCM92035)
3851                 hdev->setup = btusb_setup_bcm92035;
3852
3853         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3854             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3855                 hdev->manufacturer = 15;
3856                 hdev->setup = btbcm_setup_patchram;
3857                 hdev->set_diag = btusb_bcm_set_diag;
3858                 hdev->set_bdaddr = btbcm_set_bdaddr;
3859
3860                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3861                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3862         }
3863
3864         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3865             (id->driver_info & BTUSB_BCM_APPLE)) {
3866                 hdev->manufacturer = 15;
3867                 hdev->setup = btbcm_setup_apple;
3868                 hdev->set_diag = btusb_bcm_set_diag;
3869
3870                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3871                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3872         }
3873
3874         if (id->driver_info & BTUSB_INTEL) {
3875                 hdev->manufacturer = 2;
3876                 hdev->setup = btusb_setup_intel;
3877                 hdev->shutdown = btusb_shutdown_intel;
3878                 hdev->set_diag = btintel_set_diag_mfg;
3879                 hdev->set_bdaddr = btintel_set_bdaddr;
3880                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3881                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3882                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3883                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3884         }
3885
3886         if (id->driver_info & BTUSB_INTEL_NEW) {
3887                 hdev->manufacturer = 2;
3888                 hdev->send = btusb_send_frame_intel;
3889                 hdev->setup = btusb_setup_intel_new;
3890                 hdev->shutdown = btusb_shutdown_intel_new;
3891                 hdev->hw_error = btintel_hw_error;
3892                 hdev->set_diag = btintel_set_diag;
3893                 hdev->set_bdaddr = btintel_set_bdaddr;
3894                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3895                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3896                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3897                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3898         }
3899
3900         if (id->driver_info & BTUSB_MARVELL)
3901                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3902
3903         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3904             (id->driver_info & BTUSB_MEDIATEK)) {
3905                 hdev->setup = btusb_mtk_setup;
3906                 hdev->shutdown = btusb_mtk_shutdown;
3907                 hdev->manufacturer = 70;
3908                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3909         }
3910
3911         if (id->driver_info & BTUSB_SWAVE) {
3912                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3913                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3914         }
3915
3916         if (id->driver_info & BTUSB_INTEL_BOOT) {
3917                 hdev->manufacturer = 2;
3918                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3919         }
3920
3921         if (id->driver_info & BTUSB_ATH3012) {
3922                 data->setup_on_usb = btusb_setup_qca;
3923                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3924                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3925                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3926         }
3927
3928         if (id->driver_info & BTUSB_QCA_ROME) {
3929                 data->setup_on_usb = btusb_setup_qca;
3930                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3931                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3932                 btusb_check_needs_reset_resume(intf);
3933         }
3934
3935         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3936             (id->driver_info & BTUSB_REALTEK)) {
3937                 hdev->setup = btrtl_setup_realtek;
3938                 hdev->shutdown = btrtl_shutdown_realtek;
3939                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3940
3941                 /* Realtek devices lose their updated firmware over global
3942                  * suspend that means host doesn't send SET_FEATURE
3943                  * (DEVICE_REMOTE_WAKEUP)
3944                  */
3945                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3946
3947                 err = usb_autopm_get_interface(intf);
3948                 if (err < 0)
3949                         goto out_free_dev;
3950         }
3951
3952         if (id->driver_info & BTUSB_AMP) {
3953                 /* AMP controllers do not support SCO packets */
3954                 data->isoc = NULL;
3955         } else {
3956                 /* Interface orders are hardcoded in the specification */
3957                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3958                 data->isoc_ifnum = ifnum_base + 1;
3959         }
3960
3961         if (!reset)
3962                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3963
3964         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3965                 if (!disable_scofix)
3966                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3967         }
3968
3969         if (id->driver_info & BTUSB_BROKEN_ISOC)
3970                 data->isoc = NULL;
3971
3972         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3973                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3974
3975         if (id->driver_info & BTUSB_DIGIANSWER) {
3976                 data->cmdreq_type = USB_TYPE_VENDOR;
3977                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3978         }
3979
3980         if (id->driver_info & BTUSB_CSR) {
3981                 struct usb_device *udev = data->udev;
3982                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3983
3984                 /* Old firmware would otherwise execute USB reset */
3985                 if (bcdDevice < 0x117)
3986                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3987
3988                 /* Fake CSR devices with broken commands */
3989                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3990                         hdev->setup = btusb_setup_csr;
3991
3992                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3993         }
3994
3995         if (id->driver_info & BTUSB_SNIFFER) {
3996                 struct usb_device *udev = data->udev;
3997
3998                 /* New sniffer firmware has crippled HCI interface */
3999                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4000                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4001         }
4002
4003         if (id->driver_info & BTUSB_INTEL_BOOT) {
4004                 /* A bug in the bootloader causes that interrupt interface is
4005                  * only enabled after receiving SetInterface(0, AltSetting=0).
4006                  */
4007                 err = usb_set_interface(data->udev, 0, 0);
4008                 if (err < 0) {
4009                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4010                         goto out_free_dev;
4011                 }
4012         }
4013
4014         if (data->isoc) {
4015                 err = usb_driver_claim_interface(&btusb_driver,
4016                                                  data->isoc, data);
4017                 if (err < 0)
4018                         goto out_free_dev;
4019         }
4020
4021         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4022                 if (!usb_driver_claim_interface(&btusb_driver,
4023                                                 data->diag, data))
4024                         __set_diag_interface(hdev);
4025                 else
4026                         data->diag = NULL;
4027         }
4028
4029         if (enable_autosuspend)
4030                 usb_enable_autosuspend(data->udev);
4031
4032         err = hci_register_dev(hdev);
4033         if (err < 0)
4034                 goto out_free_dev;
4035
4036         usb_set_intfdata(intf, data);
4037
4038         return 0;
4039
4040 out_free_dev:
4041         if (data->reset_gpio)
4042                 gpiod_put(data->reset_gpio);
4043         hci_free_dev(hdev);
4044         return err;
4045 }
4046
4047 static void btusb_disconnect(struct usb_interface *intf)
4048 {
4049         struct btusb_data *data = usb_get_intfdata(intf);
4050         struct hci_dev *hdev;
4051
4052         BT_DBG("intf %p", intf);
4053
4054         if (!data)
4055                 return;
4056
4057         hdev = data->hdev;
4058         usb_set_intfdata(data->intf, NULL);
4059
4060         if (data->isoc)
4061                 usb_set_intfdata(data->isoc, NULL);
4062
4063         if (data->diag)
4064                 usb_set_intfdata(data->diag, NULL);
4065
4066         hci_unregister_dev(hdev);
4067
4068         if (intf == data->intf) {
4069                 if (data->isoc)
4070                         usb_driver_release_interface(&btusb_driver, data->isoc);
4071                 if (data->diag)
4072                         usb_driver_release_interface(&btusb_driver, data->diag);
4073         } else if (intf == data->isoc) {
4074                 if (data->diag)
4075                         usb_driver_release_interface(&btusb_driver, data->diag);
4076                 usb_driver_release_interface(&btusb_driver, data->intf);
4077         } else if (intf == data->diag) {
4078                 usb_driver_release_interface(&btusb_driver, data->intf);
4079                 if (data->isoc)
4080                         usb_driver_release_interface(&btusb_driver, data->isoc);
4081         }
4082
4083         if (data->oob_wake_irq)
4084                 device_init_wakeup(&data->udev->dev, false);
4085
4086         if (data->reset_gpio)
4087                 gpiod_put(data->reset_gpio);
4088
4089         hci_free_dev(hdev);
4090 }
4091
4092 #ifdef CONFIG_PM
4093 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4094 {
4095         struct btusb_data *data = usb_get_intfdata(intf);
4096
4097         BT_DBG("intf %p", intf);
4098
4099         if (data->suspend_count++)
4100                 return 0;
4101
4102         spin_lock_irq(&data->txlock);
4103         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4104                 set_bit(BTUSB_SUSPENDING, &data->flags);
4105                 spin_unlock_irq(&data->txlock);
4106         } else {
4107                 spin_unlock_irq(&data->txlock);
4108                 data->suspend_count--;
4109                 return -EBUSY;
4110         }
4111
4112         cancel_work_sync(&data->work);
4113
4114         btusb_stop_traffic(data);
4115         usb_kill_anchored_urbs(&data->tx_anchor);
4116
4117         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4118                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4119                 enable_irq_wake(data->oob_wake_irq);
4120                 enable_irq(data->oob_wake_irq);
4121         }
4122
4123         /* For global suspend, Realtek devices lose the loaded fw
4124          * in them. But for autosuspend, firmware should remain.
4125          * Actually, it depends on whether the usb host sends
4126          * set feature (enable wakeup) or not.
4127          */
4128         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4129                 if (PMSG_IS_AUTO(message) &&
4130                     device_can_wakeup(&data->udev->dev))
4131                         data->udev->do_remote_wakeup = 1;
4132                 else if (!PMSG_IS_AUTO(message))
4133                         data->udev->reset_resume = 1;
4134         }
4135
4136         return 0;
4137 }
4138
4139 static void play_deferred(struct btusb_data *data)
4140 {
4141         struct urb *urb;
4142         int err;
4143
4144         while ((urb = usb_get_from_anchor(&data->deferred))) {
4145                 usb_anchor_urb(urb, &data->tx_anchor);
4146
4147                 err = usb_submit_urb(urb, GFP_ATOMIC);
4148                 if (err < 0) {
4149                         if (err != -EPERM && err != -ENODEV)
4150                                 BT_ERR("%s urb %p submission failed (%d)",
4151                                        data->hdev->name, urb, -err);
4152                         kfree(urb->setup_packet);
4153                         usb_unanchor_urb(urb);
4154                         usb_free_urb(urb);
4155                         break;
4156                 }
4157
4158                 data->tx_in_flight++;
4159                 usb_free_urb(urb);
4160         }
4161
4162         /* Cleanup the rest deferred urbs. */
4163         while ((urb = usb_get_from_anchor(&data->deferred))) {
4164                 kfree(urb->setup_packet);
4165                 usb_free_urb(urb);
4166         }
4167 }
4168
4169 static int btusb_resume(struct usb_interface *intf)
4170 {
4171         struct btusb_data *data = usb_get_intfdata(intf);
4172         struct hci_dev *hdev = data->hdev;
4173         int err = 0;
4174
4175         BT_DBG("intf %p", intf);
4176
4177         if (--data->suspend_count)
4178                 return 0;
4179
4180         /* Disable only if not already disabled (keep it balanced) */
4181         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4182                 disable_irq(data->oob_wake_irq);
4183                 disable_irq_wake(data->oob_wake_irq);
4184         }
4185
4186         if (!test_bit(HCI_RUNNING, &hdev->flags))
4187                 goto done;
4188
4189         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4190                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4191                 if (err < 0) {
4192                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4193                         goto failed;
4194                 }
4195         }
4196
4197         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4198                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4199                 if (err < 0) {
4200                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4201                         goto failed;
4202                 }
4203
4204                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4205         }
4206
4207         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4208                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4209                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4210                 else
4211                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4212         }
4213
4214         spin_lock_irq(&data->txlock);
4215         play_deferred(data);
4216         clear_bit(BTUSB_SUSPENDING, &data->flags);
4217         spin_unlock_irq(&data->txlock);
4218         schedule_work(&data->work);
4219
4220         return 0;
4221
4222 failed:
4223         usb_scuttle_anchored_urbs(&data->deferred);
4224 done:
4225         spin_lock_irq(&data->txlock);
4226         clear_bit(BTUSB_SUSPENDING, &data->flags);
4227         spin_unlock_irq(&data->txlock);
4228
4229         return err;
4230 }
4231 #endif
4232
4233 static struct usb_driver btusb_driver = {
4234         .name           = "btusb",
4235         .probe          = btusb_probe,
4236         .disconnect     = btusb_disconnect,
4237 #ifdef CONFIG_PM
4238         .suspend        = btusb_suspend,
4239         .resume         = btusb_resume,
4240 #endif
4241         .id_table       = btusb_table,
4242         .supports_autosuspend = 1,
4243         .disable_hub_initiated_lpm = 1,
4244 };
4245
4246 module_usb_driver(btusb_driver);
4247
4248 module_param(disable_scofix, bool, 0644);
4249 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4250
4251 module_param(force_scofix, bool, 0644);
4252 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4253
4254 module_param(enable_autosuspend, bool, 0644);
4255 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4256
4257 module_param(reset, bool, 0644);
4258 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4259
4260 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4261 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4262 MODULE_VERSION(VERSION);
4263 MODULE_LICENSE("GPL");