drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/debugfs.h>
  20 #include <asm/unaligned.h>
  21
  22 #include <net/bluetooth/bluetooth.h>
  23 #include <net/bluetooth/hci_core.h>
  24
  25 #include "btintel.h"
  26 #include "btbcm.h"
  27 #include "btrtl.h"
  28 #include "btmtk.h"
  29
  30 #define VERSION "0.8"
  31
  32 static bool disable_scofix;
  33 static bool force_scofix;
  34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  35 static bool enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC);
  36 static bool reset = true;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE                    BIT(0)
  41 #define BTUSB_DIGIANSWER                BIT(1)
  42 #define BTUSB_CSR                       BIT(2)
  43 #define BTUSB_SNIFFER                   BIT(3)
  44 #define BTUSB_BCM92035                  BIT(4)
  45 #define BTUSB_BROKEN_ISOC               BIT(5)
  46 #define BTUSB_WRONG_SCO_MTU             BIT(6)
  47 #define BTUSB_ATH3012                   BIT(7)
  48 #define BTUSB_INTEL_COMBINED            BIT(8)
  49 #define BTUSB_INTEL_BOOT                BIT(9)
  50 #define BTUSB_BCM_PATCHRAM              BIT(10)
  51 #define BTUSB_MARVELL                   BIT(11)
  52 #define BTUSB_SWAVE                     BIT(12)
  53 #define BTUSB_AMP                       BIT(13)
  54 #define BTUSB_QCA_ROME                  BIT(14)
  55 #define BTUSB_BCM_APPLE                 BIT(15)
  56 #define BTUSB_REALTEK                   BIT(16)
  57 #define BTUSB_BCM2045                   BIT(17)
  58 #define BTUSB_IFNUM_2                   BIT(18)
  59 #define BTUSB_CW6622                    BIT(19)
  60 #define BTUSB_MEDIATEK                  BIT(20)
  61 #define BTUSB_WIDEBAND_SPEECH           BIT(21)
  62 #define BTUSB_VALID_LE_STATES           BIT(22)
  63 #define BTUSB_QCA_WCN6855               BIT(23)
  64 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
  65 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
  66 #define BTUSB_INTEL_NO_WBS_SUPPORT      BIT(26)
  67 #define BTUSB_ACTIONS_SEMI              BIT(27)
  68
  69 static const struct usb_device_id btusb_table[] = {
  70         /* Generic Bluetooth USB device */
  71         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  72
  73         /* Generic Bluetooth AMP device */
  74         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  75
  76         /* Generic Bluetooth USB interface */
  77         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  78
  79         /* Apple-specific (Broadcom) devices */
  80         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  81           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  82
  83         /* MediaTek MT76x0E */
  84         { USB_DEVICE(0x0e8d, 0x763f) },
  85
  86         /* Broadcom SoftSailing reporting vendor specific */
  87         { USB_DEVICE(0x0a5c, 0x21e1) },
  88
  89         /* Apple MacBookPro 7,1 */
  90         { USB_DEVICE(0x05ac, 0x8213) },
  91
  92         /* Apple iMac11,1 */
  93         { USB_DEVICE(0x05ac, 0x8215) },
  94
  95         /* Apple MacBookPro6,2 */
  96         { USB_DEVICE(0x05ac, 0x8218) },
  97
  98         /* Apple MacBookAir3,1, MacBookAir3,2 */
  99         { USB_DEVICE(0x05ac, 0x821b) },
 100
 101         /* Apple MacBookAir4,1 */
 102         { USB_DEVICE(0x05ac, 0x821f) },
 103
 104         /* Apple MacBookPro8,2 */
 105         { USB_DEVICE(0x05ac, 0x821a) },
 106
 107         /* Apple MacMini5,1 */
 108         { USB_DEVICE(0x05ac, 0x8281) },
 109
 110         /* AVM BlueFRITZ! USB v2.0 */
 111         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 112
 113         /* Bluetooth Ultraport Module from IBM */
 114         { USB_DEVICE(0x04bf, 0x030a) },
 115
 116         /* ALPS Modules with non-standard id */
 117         { USB_DEVICE(0x044e, 0x3001) },
 118         { USB_DEVICE(0x044e, 0x3002) },
 119
 120         /* Ericsson with non-standard id */
 121         { USB_DEVICE(0x0bdb, 0x1002) },
 122
 123         /* Canyon CN-BTU1 with HID interfaces */
 124         { USB_DEVICE(0x0c10, 0x0000) },
 125
 126         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 127         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Broadcom BCM920703 (HTC Vive) */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Foxconn - Hon Hai */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Lite-On Technology - Broadcom based */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* Broadcom devices with vendor specific id */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* ASUSTek Computer - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* Belkin F8065bf - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* IMC Networks - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Dell Computer - Broadcom based  */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* Toshiba Corp - Broadcom based */
 166         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 167           .driver_info = BTUSB_BCM_PATCHRAM },
 168
 169         /* Intel Bluetooth USB Bootloader (RAM module) */
 170         { USB_DEVICE(0x8087, 0x0a5a),
 171           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 172
 173         { }     /* Terminating entry */
 174 };
 175
 176 MODULE_DEVICE_TABLE(usb, btusb_table);
 177
 178 static const struct usb_device_id blacklist_table[] = {
 179         /* CSR BlueCore devices */
 180         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 181
 182         /* Broadcom BCM2033 without firmware */
 183         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 184
 185         /* Broadcom BCM2045 devices */
 186         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 187
 188         /* Atheros 3011 with sflash firmware */
 189         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 195         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 196
 197         /* Atheros AR9285 Malbec with sflash firmware */
 198         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 199
 200         /* Atheros 3012 with sflash firmware */
 201         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 251
 252         /* Atheros AR5BBU12 with sflash firmware */
 253         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 254
 255         /* Atheros AR5BBU12 with sflash firmware */
 256         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 258
 259         /* QCA ROME chipset */
 260         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 261                                                      BTUSB_WIDEBAND_SPEECH },
 262         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 263                                                      BTUSB_WIDEBAND_SPEECH },
 264         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 265                                                      BTUSB_WIDEBAND_SPEECH },
 266         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 267                                                      BTUSB_WIDEBAND_SPEECH },
 268         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 269                                                      BTUSB_WIDEBAND_SPEECH },
 270         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 271                                                      BTUSB_WIDEBAND_SPEECH },
 272         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 273                                                      BTUSB_WIDEBAND_SPEECH },
 274         { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
 275                                                      BTUSB_WIDEBAND_SPEECH },
 276         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 277                                                      BTUSB_WIDEBAND_SPEECH },
 278         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 279                                                      BTUSB_WIDEBAND_SPEECH },
 280         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 281                                                      BTUSB_WIDEBAND_SPEECH },
 282         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 283                                                      BTUSB_WIDEBAND_SPEECH },
 284         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 285                                                      BTUSB_WIDEBAND_SPEECH },
 286         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 287                                                      BTUSB_WIDEBAND_SPEECH },
 288         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 289                                                      BTUSB_WIDEBAND_SPEECH },
 290         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 291                                                      BTUSB_WIDEBAND_SPEECH },
 292         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 293                                                      BTUSB_WIDEBAND_SPEECH },
 294         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 295                                                      BTUSB_WIDEBAND_SPEECH },
 296         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 297                                                      BTUSB_WIDEBAND_SPEECH },
 298
 299         /* QCA WCN6855 chipset */
 300         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 301                                                      BTUSB_WIDEBAND_SPEECH |
 302                                                      BTUSB_VALID_LE_STATES },
 303         { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
 304                                                      BTUSB_WIDEBAND_SPEECH |
 305                                                      BTUSB_VALID_LE_STATES },
 306         { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
 307                                                      BTUSB_WIDEBAND_SPEECH |
 308                                                      BTUSB_VALID_LE_STATES },
 309         { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
 310                                                      BTUSB_WIDEBAND_SPEECH |
 311                                                      BTUSB_VALID_LE_STATES },
 312         { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
 313                                                      BTUSB_WIDEBAND_SPEECH |
 314                                                      BTUSB_VALID_LE_STATES },
 315         { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
 316                                                      BTUSB_WIDEBAND_SPEECH |
 317                                                      BTUSB_VALID_LE_STATES },
 318         { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
 319                                                      BTUSB_WIDEBAND_SPEECH |
 320                                                      BTUSB_VALID_LE_STATES },
 321         { USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 |
 322                                                      BTUSB_WIDEBAND_SPEECH |
 323                                                      BTUSB_VALID_LE_STATES },
 324         { USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 |
 325                                                      BTUSB_WIDEBAND_SPEECH |
 326                                                      BTUSB_VALID_LE_STATES },
 327         { USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 |
 328                                                      BTUSB_WIDEBAND_SPEECH |
 329                                                      BTUSB_VALID_LE_STATES },
 330         { USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 |
 331                                                      BTUSB_WIDEBAND_SPEECH |
 332                                                      BTUSB_VALID_LE_STATES },
 333         { USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 |
 334                                                      BTUSB_WIDEBAND_SPEECH |
 335                                                      BTUSB_VALID_LE_STATES },
 336         { USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 |
 337                                                      BTUSB_WIDEBAND_SPEECH |
 338                                                      BTUSB_VALID_LE_STATES },
 339         { USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 |
 340                                                      BTUSB_WIDEBAND_SPEECH |
 341                                                      BTUSB_VALID_LE_STATES },
 342         { USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 |
 343                                                      BTUSB_WIDEBAND_SPEECH |
 344                                                      BTUSB_VALID_LE_STATES },
 345         { USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 |
 346                                                      BTUSB_WIDEBAND_SPEECH |
 347                                                      BTUSB_VALID_LE_STATES },
 348         { USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 |
 349                                                      BTUSB_WIDEBAND_SPEECH |
 350                                                      BTUSB_VALID_LE_STATES },
 351         { USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 |
 352                                                      BTUSB_WIDEBAND_SPEECH |
 353                                                      BTUSB_VALID_LE_STATES },
 354         { USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 |
 355                                                      BTUSB_WIDEBAND_SPEECH |
 356                                                      BTUSB_VALID_LE_STATES },
 357         { USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 |
 358                                                      BTUSB_WIDEBAND_SPEECH |
 359                                                      BTUSB_VALID_LE_STATES },
 360         { USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 |
 361                                                      BTUSB_WIDEBAND_SPEECH |
 362                                                      BTUSB_VALID_LE_STATES },
 363         { USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 |
 364                                                      BTUSB_WIDEBAND_SPEECH |
 365                                                      BTUSB_VALID_LE_STATES },
 366         { USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 |
 367                                                      BTUSB_WIDEBAND_SPEECH |
 368                                                      BTUSB_VALID_LE_STATES },
 369         { USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 |
 370                                                      BTUSB_WIDEBAND_SPEECH |
 371                                                      BTUSB_VALID_LE_STATES },
 372         { USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 |
 373                                                      BTUSB_WIDEBAND_SPEECH |
 374                                                      BTUSB_VALID_LE_STATES },
 375         { USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 |
 376                                                      BTUSB_WIDEBAND_SPEECH |
 377                                                      BTUSB_VALID_LE_STATES },
 378         { USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 |
 379                                                      BTUSB_WIDEBAND_SPEECH |
 380                                                      BTUSB_VALID_LE_STATES },
 381         { USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 |
 382                                                      BTUSB_WIDEBAND_SPEECH |
 383                                                      BTUSB_VALID_LE_STATES },
 384         { USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 |
 385                                                      BTUSB_WIDEBAND_SPEECH |
 386                                                      BTUSB_VALID_LE_STATES },
 387         { USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 |
 388                                                      BTUSB_WIDEBAND_SPEECH |
 389                                                      BTUSB_VALID_LE_STATES },
 390         { USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 |
 391                                                      BTUSB_WIDEBAND_SPEECH |
 392                                                      BTUSB_VALID_LE_STATES },
 393         { USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 |
 394                                                      BTUSB_WIDEBAND_SPEECH |
 395                                                      BTUSB_VALID_LE_STATES },
 396         { USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 |
 397                                                      BTUSB_WIDEBAND_SPEECH |
 398                                                      BTUSB_VALID_LE_STATES },
 399         { USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 |
 400                                                      BTUSB_WIDEBAND_SPEECH |
 401                                                      BTUSB_VALID_LE_STATES },
 402         { USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 |
 403                                                      BTUSB_WIDEBAND_SPEECH |
 404                                                      BTUSB_VALID_LE_STATES },
 405
 406         /* QCA WCN785x chipset */
 407         { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
 408                                                      BTUSB_WIDEBAND_SPEECH |
 409                                                      BTUSB_VALID_LE_STATES },
 410
 411         /* Broadcom BCM2035 */
 412         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 413         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 414         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 415
 416         /* Broadcom BCM2045 */
 417         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 418         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 419
 420         /* IBM/Lenovo ThinkPad with Broadcom chip */
 421         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 422         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 423
 424         /* HP laptop with Broadcom chip */
 425         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 426
 427         /* Dell laptop with Broadcom chip */
 428         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 429
 430         /* Dell Wireless 370 and 410 devices */
 431         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 432         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 433
 434         /* Belkin F8T012 and F8T013 devices */
 435         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 436         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 437
 438         /* Asus WL-BTD202 device */
 439         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 440
 441         /* Kensington Bluetooth USB adapter */
 442         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 443
 444         /* RTX Telecom based adapters with buggy SCO support */
 445         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 446         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 447
 448         /* CONWISE Technology based adapters with buggy SCO support */
 449         { USB_DEVICE(0x0e5e, 0x6622),
 450           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 451
 452         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 453         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 454
 455         /* Digianswer devices */
 456         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 457         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 458
 459         /* CSR BlueCore Bluetooth Sniffer */
 460         { USB_DEVICE(0x0a12, 0x0002),
 461           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 462
 463         /* Frontline ComProbe Bluetooth Sniffer */
 464         { USB_DEVICE(0x16d3, 0x0002),
 465           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 466
 467         /* Marvell Bluetooth devices */
 468         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 469         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 470         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 471
 472         /* Intel Bluetooth devices */
 473         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
 474         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
 475         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
 476         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
 477         { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
 478         { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
 479         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 480         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
 481                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 482                                                      BTUSB_INTEL_BROKEN_INITIAL_NCMD |
 483                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 484         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
 485                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 486                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 487         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
 488         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
 489                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 490         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
 491
 492         /* Other Intel Bluetooth devices */
 493         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 494           .driver_info = BTUSB_IGNORE },
 495
 496         /* Realtek 8821CE Bluetooth devices */
 497         { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
 498                                                      BTUSB_WIDEBAND_SPEECH },
 499
 500         /* Realtek 8822CE Bluetooth devices */
 501         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 502                                                      BTUSB_WIDEBAND_SPEECH },
 503         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 504                                                      BTUSB_WIDEBAND_SPEECH },
 505
 506         /* Realtek 8822CU Bluetooth devices */
 507         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 508                                                      BTUSB_WIDEBAND_SPEECH },
 509
 510         /* Realtek 8852AE Bluetooth devices */
 511         { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
 512                                                      BTUSB_WIDEBAND_SPEECH },
 513         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 514                                                      BTUSB_WIDEBAND_SPEECH },
 515         { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
 516                                                      BTUSB_WIDEBAND_SPEECH },
 517         { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
 518                                                      BTUSB_WIDEBAND_SPEECH },
 519         { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
 520                                                      BTUSB_WIDEBAND_SPEECH },
 521         { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
 522                                                      BTUSB_WIDEBAND_SPEECH },
 523         { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
 524                                                      BTUSB_WIDEBAND_SPEECH },
 525
 526         /* Realtek 8852CE Bluetooth devices */
 527         { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
 528                                                      BTUSB_WIDEBAND_SPEECH },
 529         { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
 530                                                      BTUSB_WIDEBAND_SPEECH },
 531         { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
 532                                                      BTUSB_WIDEBAND_SPEECH },
 533         { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
 534                                                      BTUSB_WIDEBAND_SPEECH },
 535         { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
 536                                                      BTUSB_WIDEBAND_SPEECH },
 537         { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
 538                                                      BTUSB_WIDEBAND_SPEECH },
 539
 540         /* Realtek 8852BE Bluetooth devices */
 541         { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
 542                                                      BTUSB_WIDEBAND_SPEECH },
 543
 544         /* Realtek Bluetooth devices */
 545         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 546           .driver_info = BTUSB_REALTEK },
 547
 548         /* MediaTek Bluetooth devices */
 549         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 550           .driver_info = BTUSB_MEDIATEK |
 551                          BTUSB_WIDEBAND_SPEECH |
 552                          BTUSB_VALID_LE_STATES },
 553
 554         /* Additional MediaTek MT7615E Bluetooth devices */
 555         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 556
 557         /* Additional MediaTek MT7663 Bluetooth devices */
 558         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 559                                                      BTUSB_WIDEBAND_SPEECH |
 560                                                      BTUSB_VALID_LE_STATES },
 561
 562         /* Additional MediaTek MT7668 Bluetooth devices */
 563         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 564                                                      BTUSB_WIDEBAND_SPEECH |
 565                                                      BTUSB_VALID_LE_STATES },
 566
 567         /* Additional MediaTek MT7921 Bluetooth devices */
 568         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 569                                                      BTUSB_WIDEBAND_SPEECH |
 570                                                      BTUSB_VALID_LE_STATES },
 571         { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
 572                                                      BTUSB_WIDEBAND_SPEECH |
 573                                                      BTUSB_VALID_LE_STATES },
 574         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 575                                                      BTUSB_WIDEBAND_SPEECH |
 576                                                      BTUSB_VALID_LE_STATES },
 577         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 578                                                      BTUSB_WIDEBAND_SPEECH |
 579                                                      BTUSB_VALID_LE_STATES },
 580         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 581                                                      BTUSB_WIDEBAND_SPEECH |
 582                                                      BTUSB_VALID_LE_STATES },
 583         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 584                                                      BTUSB_WIDEBAND_SPEECH |
 585                                                      BTUSB_VALID_LE_STATES },
 586         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 587                                                      BTUSB_WIDEBAND_SPEECH |
 588                                                      BTUSB_VALID_LE_STATES },
 589         { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
 590                                                      BTUSB_WIDEBAND_SPEECH |
 591                                                      BTUSB_VALID_LE_STATES },
 592         { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
 593                                                      BTUSB_WIDEBAND_SPEECH |
 594                                                      BTUSB_VALID_LE_STATES },
 595         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 596                                                      BTUSB_WIDEBAND_SPEECH |
 597                                                      BTUSB_VALID_LE_STATES },
 598         { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
 599                                                      BTUSB_WIDEBAND_SPEECH |
 600                                                      BTUSB_VALID_LE_STATES },
 601
 602         /* MediaTek MT7922A Bluetooth devices */
 603         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 604                                                      BTUSB_WIDEBAND_SPEECH |
 605                                                      BTUSB_VALID_LE_STATES },
 606         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 607                                                      BTUSB_WIDEBAND_SPEECH |
 608                                                      BTUSB_VALID_LE_STATES },
 609         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 610                                                      BTUSB_WIDEBAND_SPEECH |
 611                                                      BTUSB_VALID_LE_STATES },
 612         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 613                                                      BTUSB_WIDEBAND_SPEECH |
 614                                                      BTUSB_VALID_LE_STATES },
 615         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 616                                                      BTUSB_WIDEBAND_SPEECH |
 617                                                      BTUSB_VALID_LE_STATES },
 618
 619         /* Additional Realtek 8723AE Bluetooth devices */
 620         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 621         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 622
 623         /* Additional Realtek 8723BE Bluetooth devices */
 624         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 625         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 626         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 627         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 628         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 629         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 630         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 631
 632         /* Additional Realtek 8723BU Bluetooth devices */
 633         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 634
 635         /* Additional Realtek 8723DE Bluetooth devices */
 636         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 637         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 638
 639         /* Additional Realtek 8761BUV Bluetooth devices */
 640         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 641                                                      BTUSB_WIDEBAND_SPEECH },
 642         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 643                                                      BTUSB_WIDEBAND_SPEECH },
 644         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 645                                                      BTUSB_WIDEBAND_SPEECH },
 646         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 647                                                      BTUSB_WIDEBAND_SPEECH },
 648         { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
 649                                                      BTUSB_WIDEBAND_SPEECH },
 650         { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 651                                                      BTUSB_WIDEBAND_SPEECH },
 652
 653         /* Additional Realtek 8821AE Bluetooth devices */
 654         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 655         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 656         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 657         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 658         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 659
 660         /* Additional Realtek 8822BE Bluetooth devices */
 661         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 662         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 663
 664         /* Additional Realtek 8822CE Bluetooth devices */
 665         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 666                                                      BTUSB_WIDEBAND_SPEECH },
 667         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 668                                                      BTUSB_WIDEBAND_SPEECH },
 669         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 670                                                      BTUSB_WIDEBAND_SPEECH },
 671         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 672                                                      BTUSB_WIDEBAND_SPEECH },
 673         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 674                                                      BTUSB_WIDEBAND_SPEECH },
 675         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 676                                                      BTUSB_WIDEBAND_SPEECH },
 677         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 678                                                      BTUSB_WIDEBAND_SPEECH },
 679         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 680                                                      BTUSB_WIDEBAND_SPEECH },
 681         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 682                                                      BTUSB_WIDEBAND_SPEECH },
 683         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 684                                                      BTUSB_WIDEBAND_SPEECH },
 685         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 686                                                      BTUSB_WIDEBAND_SPEECH },
 687
 688         /* Actions Semiconductor ATS2851 based devices */
 689         { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
 690
 691         /* Silicon Wave based devices */
 692         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 693
 694         { }     /* Terminating entry */
 695 };
 696
 697 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 698  * this is a problem with the platform (likely shutting off all power) not with
 699  * the module itself. So we use a DMI list to match known broken platforms.
 700  */
 701 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 702         {
 703                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 704                 .matches = {
 705                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 706                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 707                 },
 708         },
 709         {
 710                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 711                 .matches = {
 712                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 713                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 714                 },
 715         },
 716         {
 717                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 718                 .matches = {
 719                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 720                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 721                 },
 722         },
 723         {}
 724 };
 725
 726 #define BTUSB_MAX_ISOC_FRAMES   10
 727
 728 #define BTUSB_INTR_RUNNING      0
 729 #define BTUSB_BULK_RUNNING      1
 730 #define BTUSB_ISOC_RUNNING      2
 731 #define BTUSB_SUSPENDING        3
 732 #define BTUSB_DID_ISO_RESUME    4
 733 #define BTUSB_BOOTLOADER        5
 734 #define BTUSB_DOWNLOADING       6
 735 #define BTUSB_FIRMWARE_LOADED   7
 736 #define BTUSB_FIRMWARE_FAILED   8
 737 #define BTUSB_BOOTING           9
 738 #define BTUSB_DIAG_RUNNING      10
 739 #define BTUSB_OOB_WAKE_ENABLED  11
 740 #define BTUSB_HW_RESET_ACTIVE   12
 741 #define BTUSB_TX_WAIT_VND_EVT   13
 742 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 743 #define BTUSB_USE_ALT3_FOR_WBS  15
 744 #define BTUSB_ALT6_CONTINUOUS_TX        16
 745
 746 struct btusb_data {
 747         struct hci_dev       *hdev;
 748         struct usb_device    *udev;
 749         struct usb_interface *intf;
 750         struct usb_interface *isoc;
 751         struct usb_interface *diag;
 752         unsigned isoc_ifnum;
 753
 754         unsigned long flags;
 755
 756         bool poll_sync;
 757         int intr_interval;
 758         struct work_struct  work;
 759         struct work_struct  waker;
 760         struct delayed_work rx_work;
 761
 762         struct sk_buff_head acl_q;
 763
 764         struct usb_anchor deferred;
 765         struct usb_anchor tx_anchor;
 766         int tx_in_flight;
 767         spinlock_t txlock;
 768
 769         struct usb_anchor intr_anchor;
 770         struct usb_anchor bulk_anchor;
 771         struct usb_anchor isoc_anchor;
 772         struct usb_anchor diag_anchor;
 773         struct usb_anchor ctrl_anchor;
 774         spinlock_t rxlock;
 775
 776         struct sk_buff *evt_skb;
 777         struct sk_buff *acl_skb;
 778         struct sk_buff *sco_skb;
 779
 780         struct usb_endpoint_descriptor *intr_ep;
 781         struct usb_endpoint_descriptor *bulk_tx_ep;
 782         struct usb_endpoint_descriptor *bulk_rx_ep;
 783         struct usb_endpoint_descriptor *isoc_tx_ep;
 784         struct usb_endpoint_descriptor *isoc_rx_ep;
 785         struct usb_endpoint_descriptor *diag_tx_ep;
 786         struct usb_endpoint_descriptor *diag_rx_ep;
 787
 788         struct gpio_desc *reset_gpio;
 789
 790         __u8 cmdreq_type;
 791         __u8 cmdreq;
 792
 793         unsigned int sco_num;
 794         unsigned int air_mode;
 795         bool usb_alt6_packet_flow;
 796         int isoc_altsetting;
 797         int suspend_count;
 798
 799         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 800         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 801         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 802
 803         int (*setup_on_usb)(struct hci_dev *hdev);
 804
 805         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 806         unsigned cmd_timeout_cnt;
 807 };
 808
 809 static void btusb_reset(struct hci_dev *hdev)
 810 {
 811         struct btusb_data *data;
 812         int err;
 813
 814         if (hdev->reset) {
 815                 hdev->reset(hdev);
 816                 return;
 817         }
 818
 819         data = hci_get_drvdata(hdev);
 820         /* This is not an unbalanced PM reference since the device will reset */
 821         err = usb_autopm_get_interface(data->intf);
 822         if (err) {
 823                 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
 824                 return;
 825         }
 826
 827         bt_dev_err(hdev, "Resetting usb device.");
 828         usb_queue_reset_device(data->intf);
 829 }
 830
 831 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 832 {
 833         struct btusb_data *data = hci_get_drvdata(hdev);
 834         struct gpio_desc *reset_gpio = data->reset_gpio;
 835
 836         if (++data->cmd_timeout_cnt < 5)
 837                 return;
 838
 839         if (!reset_gpio) {
 840                 btusb_reset(hdev);
 841                 return;
 842         }
 843
 844         /*
 845          * Toggle the hard reset line if the platform provides one. The reset
 846          * is going to yank the device off the USB and then replug. So doing
 847          * once is enough. The cleanup is handled correctly on the way out
 848          * (standard USB disconnect), and the new device is detected cleanly
 849          * and bound to the driver again like it should be.
 850          */
 851         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 852                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 853                 return;
 854         }
 855
 856         bt_dev_err(hdev, "Initiating HW reset via gpio");
 857         gpiod_set_value_cansleep(reset_gpio, 1);
 858         msleep(100);
 859         gpiod_set_value_cansleep(reset_gpio, 0);
 860 }
 861
 862 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 863 {
 864         struct btusb_data *data = hci_get_drvdata(hdev);
 865         struct gpio_desc *reset_gpio = data->reset_gpio;
 866
 867         if (++data->cmd_timeout_cnt < 5)
 868                 return;
 869
 870         if (!reset_gpio) {
 871                 btusb_reset(hdev);
 872                 return;
 873         }
 874
 875         /* Toggle the hard reset line. The Realtek device is going to
 876          * yank itself off the USB and then replug. The cleanup is handled
 877          * correctly on the way out (standard USB disconnect), and the new
 878          * device is detected cleanly and bound to the driver again like
 879          * it should be.
 880          */
 881         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 882                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 883                 return;
 884         }
 885
 886         bt_dev_err(hdev, "Reset Realtek device via gpio");
 887         gpiod_set_value_cansleep(reset_gpio, 1);
 888         msleep(200);
 889         gpiod_set_value_cansleep(reset_gpio, 0);
 890 }
 891
 892 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 893 {
 894         struct btusb_data *data = hci_get_drvdata(hdev);
 895         struct gpio_desc *reset_gpio = data->reset_gpio;
 896
 897         if (++data->cmd_timeout_cnt < 5)
 898                 return;
 899
 900         if (reset_gpio) {
 901                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
 902
 903                 /* Toggle the hard reset line. The qca bt device is going to
 904                  * yank itself off the USB and then replug. The cleanup is handled
 905                  * correctly on the way out (standard USB disconnect), and the new
 906                  * device is detected cleanly and bound to the driver again like
 907                  * it should be.
 908                  */
 909                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 910                         bt_dev_err(hdev, "last reset failed? Not resetting again");
 911                         return;
 912                 }
 913
 914                 gpiod_set_value_cansleep(reset_gpio, 0);
 915                 msleep(200);
 916                 gpiod_set_value_cansleep(reset_gpio, 1);
 917
 918                 return;
 919         }
 920
 921         btusb_reset(hdev);
 922 }
 923
 924 static inline void btusb_free_frags(struct btusb_data *data)
 925 {
 926         unsigned long flags;
 927
 928         spin_lock_irqsave(&data->rxlock, flags);
 929
 930         dev_kfree_skb_irq(data->evt_skb);
 931         data->evt_skb = NULL;
 932
 933         dev_kfree_skb_irq(data->acl_skb);
 934         data->acl_skb = NULL;
 935
 936         dev_kfree_skb_irq(data->sco_skb);
 937         data->sco_skb = NULL;
 938
 939         spin_unlock_irqrestore(&data->rxlock, flags);
 940 }
 941
 942 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
 943 {
 944         if (data->intr_interval) {
 945                 /* Trigger dequeue immediatelly if an event is received */
 946                 schedule_delayed_work(&data->rx_work, 0);
 947         }
 948
 949         return data->recv_event(data->hdev, skb);
 950 }
 951
 952 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 953 {
 954         struct sk_buff *skb;
 955         unsigned long flags;
 956         int err = 0;
 957
 958         spin_lock_irqsave(&data->rxlock, flags);
 959         skb = data->evt_skb;
 960
 961         while (count) {
 962                 int len;
 963
 964                 if (!skb) {
 965                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 966                         if (!skb) {
 967                                 err = -ENOMEM;
 968                                 break;
 969                         }
 970
 971                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 972                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 973                 }
 974
 975                 len = min_t(uint, hci_skb_expect(skb), count);
 976                 skb_put_data(skb, buffer, len);
 977
 978                 count -= len;
 979                 buffer += len;
 980                 hci_skb_expect(skb) -= len;
 981
 982                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 983                         /* Complete event header */
 984                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 985
 986                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 987                                 kfree_skb(skb);
 988                                 skb = NULL;
 989
 990                                 err = -EILSEQ;
 991                                 break;
 992                         }
 993                 }
 994
 995                 if (!hci_skb_expect(skb)) {
 996                         /* Complete frame */
 997                         btusb_recv_event(data, skb);
 998                         skb = NULL;
 999                 }
1000         }
1001
1002         data->evt_skb = skb;
1003         spin_unlock_irqrestore(&data->rxlock, flags);
1004
1005         return err;
1006 }
1007
1008 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1009 {
1010         /* Only queue ACL packet if intr_interval is set as it means
1011          * force_poll_sync has been enabled.
1012          */
1013         if (!data->intr_interval)
1014                 return data->recv_acl(data->hdev, skb);
1015
1016         skb_queue_tail(&data->acl_q, skb);
1017         schedule_delayed_work(&data->rx_work, data->intr_interval);
1018
1019         return 0;
1020 }
1021
1022 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1023 {
1024         struct sk_buff *skb;
1025         unsigned long flags;
1026         int err = 0;
1027
1028         spin_lock_irqsave(&data->rxlock, flags);
1029         skb = data->acl_skb;
1030
1031         while (count) {
1032                 int len;
1033
1034                 if (!skb) {
1035                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1036                         if (!skb) {
1037                                 err = -ENOMEM;
1038                                 break;
1039                         }
1040
1041                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1042                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1043                 }
1044
1045                 len = min_t(uint, hci_skb_expect(skb), count);
1046                 skb_put_data(skb, buffer, len);
1047
1048                 count -= len;
1049                 buffer += len;
1050                 hci_skb_expect(skb) -= len;
1051
1052                 if (skb->len == HCI_ACL_HDR_SIZE) {
1053                         __le16 dlen = hci_acl_hdr(skb)->dlen;
1054
1055                         /* Complete ACL header */
1056                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
1057
1058                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1059                                 kfree_skb(skb);
1060                                 skb = NULL;
1061
1062                                 err = -EILSEQ;
1063                                 break;
1064                         }
1065                 }
1066
1067                 if (!hci_skb_expect(skb)) {
1068                         /* Complete frame */
1069                         btusb_recv_acl(data, skb);
1070                         skb = NULL;
1071                 }
1072         }
1073
1074         data->acl_skb = skb;
1075         spin_unlock_irqrestore(&data->rxlock, flags);
1076
1077         return err;
1078 }
1079
1080 static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1081                                       struct hci_sco_hdr *hdr)
1082 {
1083         __u16 handle;
1084
1085         if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1086                 // Can't validate, userspace controls everything.
1087                 return true;
1088
1089         /*
1090          * USB isochronous transfers are not designed to be reliable and may
1091          * lose fragments.  When this happens, the next first fragment
1092          * encountered might actually be a continuation fragment.
1093          * Validate the handle to detect it and drop it, or else the upper
1094          * layer will get garbage for a while.
1095          */
1096
1097         handle = hci_handle(__le16_to_cpu(hdr->handle));
1098
1099         switch (hci_conn_lookup_type(hdev, handle)) {
1100         case SCO_LINK:
1101         case ESCO_LINK:
1102                 return true;
1103         default:
1104                 return false;
1105         }
1106 }
1107
1108 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1109 {
1110         struct sk_buff *skb;
1111         unsigned long flags;
1112         int err = 0;
1113
1114         spin_lock_irqsave(&data->rxlock, flags);
1115         skb = data->sco_skb;
1116
1117         while (count) {
1118                 int len;
1119
1120                 if (!skb) {
1121                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1122                         if (!skb) {
1123                                 err = -ENOMEM;
1124                                 break;
1125                         }
1126
1127                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1128                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1129                 }
1130
1131                 len = min_t(uint, hci_skb_expect(skb), count);
1132                 skb_put_data(skb, buffer, len);
1133
1134                 count -= len;
1135                 buffer += len;
1136                 hci_skb_expect(skb) -= len;
1137
1138                 if (skb->len == HCI_SCO_HDR_SIZE) {
1139                         /* Complete SCO header */
1140                         struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1141
1142                         hci_skb_expect(skb) = hdr->dlen;
1143
1144                         if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1145                             !btusb_validate_sco_handle(data->hdev, hdr)) {
1146                                 kfree_skb(skb);
1147                                 skb = NULL;
1148
1149                                 err = -EILSEQ;
1150                                 break;
1151                         }
1152                 }
1153
1154                 if (!hci_skb_expect(skb)) {
1155                         /* Complete frame */
1156                         hci_recv_frame(data->hdev, skb);
1157                         skb = NULL;
1158                 }
1159         }
1160
1161         data->sco_skb = skb;
1162         spin_unlock_irqrestore(&data->rxlock, flags);
1163
1164         return err;
1165 }
1166
1167 static void btusb_intr_complete(struct urb *urb)
1168 {
1169         struct hci_dev *hdev = urb->context;
1170         struct btusb_data *data = hci_get_drvdata(hdev);
1171         int err;
1172
1173         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1174                urb->actual_length);
1175
1176         if (!test_bit(HCI_RUNNING, &hdev->flags))
1177                 return;
1178
1179         if (urb->status == 0) {
1180                 hdev->stat.byte_rx += urb->actual_length;
1181
1182                 if (btusb_recv_intr(data, urb->transfer_buffer,
1183                                     urb->actual_length) < 0) {
1184                         bt_dev_err(hdev, "corrupted event packet");
1185                         hdev->stat.err_rx++;
1186                 }
1187         } else if (urb->status == -ENOENT) {
1188                 /* Avoid suspend failed when usb_kill_urb */
1189                 return;
1190         }
1191
1192         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1193                 return;
1194
1195         usb_mark_last_busy(data->udev);
1196         usb_anchor_urb(urb, &data->intr_anchor);
1197
1198         err = usb_submit_urb(urb, GFP_ATOMIC);
1199         if (err < 0) {
1200                 /* -EPERM: urb is being killed;
1201                  * -ENODEV: device got disconnected
1202                  */
1203                 if (err != -EPERM && err != -ENODEV)
1204                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1205                                    urb, -err);
1206                 if (err != -EPERM)
1207                         hci_cmd_sync_cancel(hdev, -err);
1208                 usb_unanchor_urb(urb);
1209         }
1210 }
1211
1212 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1213 {
1214         struct btusb_data *data = hci_get_drvdata(hdev);
1215         struct urb *urb;
1216         unsigned char *buf;
1217         unsigned int pipe;
1218         int err, size;
1219
1220         BT_DBG("%s", hdev->name);
1221
1222         if (!data->intr_ep)
1223                 return -ENODEV;
1224
1225         urb = usb_alloc_urb(0, mem_flags);
1226         if (!urb)
1227                 return -ENOMEM;
1228
1229         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1230
1231         buf = kmalloc(size, mem_flags);
1232         if (!buf) {
1233                 usb_free_urb(urb);
1234                 return -ENOMEM;
1235         }
1236
1237         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1238
1239         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1240                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1241
1242         urb->transfer_flags |= URB_FREE_BUFFER;
1243
1244         usb_anchor_urb(urb, &data->intr_anchor);
1245
1246         err = usb_submit_urb(urb, mem_flags);
1247         if (err < 0) {
1248                 if (err != -EPERM && err != -ENODEV)
1249                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1250                                    urb, -err);
1251                 if (err != -EPERM)
1252                         hci_cmd_sync_cancel(hdev, -err);
1253                 usb_unanchor_urb(urb);
1254         }
1255
1256         /* Only initialize intr_interval if URB poll sync is enabled */
1257         if (!data->poll_sync)
1258                 goto done;
1259
1260         /* The units are frames (milliseconds) for full and low speed devices,
1261          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1262          * devices.
1263          *
1264          * This is done once on open/resume so it shouldn't change even if
1265          * force_poll_sync changes.
1266          */
1267         switch (urb->dev->speed) {
1268         case USB_SPEED_SUPER_PLUS:
1269         case USB_SPEED_SUPER:   /* units are 125us */
1270                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1271                 break;
1272         default:
1273                 data->intr_interval = msecs_to_jiffies(urb->interval);
1274                 break;
1275         }
1276
1277 done:
1278         usb_free_urb(urb);
1279
1280         return err;
1281 }
1282
1283 static void btusb_bulk_complete(struct urb *urb)
1284 {
1285         struct hci_dev *hdev = urb->context;
1286         struct btusb_data *data = hci_get_drvdata(hdev);
1287         int err;
1288
1289         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1290                urb->actual_length);
1291
1292         if (!test_bit(HCI_RUNNING, &hdev->flags))
1293                 return;
1294
1295         if (urb->status == 0) {
1296                 hdev->stat.byte_rx += urb->actual_length;
1297
1298                 if (data->recv_bulk(data, urb->transfer_buffer,
1299                                     urb->actual_length) < 0) {
1300                         bt_dev_err(hdev, "corrupted ACL packet");
1301                         hdev->stat.err_rx++;
1302                 }
1303         } else if (urb->status == -ENOENT) {
1304                 /* Avoid suspend failed when usb_kill_urb */
1305                 return;
1306         }
1307
1308         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1309                 return;
1310
1311         usb_anchor_urb(urb, &data->bulk_anchor);
1312         usb_mark_last_busy(data->udev);
1313
1314         err = usb_submit_urb(urb, GFP_ATOMIC);
1315         if (err < 0) {
1316                 /* -EPERM: urb is being killed;
1317                  * -ENODEV: device got disconnected
1318                  */
1319                 if (err != -EPERM && err != -ENODEV)
1320                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1321                                    urb, -err);
1322                 usb_unanchor_urb(urb);
1323         }
1324 }
1325
1326 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1327 {
1328         struct btusb_data *data = hci_get_drvdata(hdev);
1329         struct urb *urb;
1330         unsigned char *buf;
1331         unsigned int pipe;
1332         int err, size = HCI_MAX_FRAME_SIZE;
1333
1334         BT_DBG("%s", hdev->name);
1335
1336         if (!data->bulk_rx_ep)
1337                 return -ENODEV;
1338
1339         urb = usb_alloc_urb(0, mem_flags);
1340         if (!urb)
1341                 return -ENOMEM;
1342
1343         buf = kmalloc(size, mem_flags);
1344         if (!buf) {
1345                 usb_free_urb(urb);
1346                 return -ENOMEM;
1347         }
1348
1349         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1350
1351         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1352                           btusb_bulk_complete, hdev);
1353
1354         urb->transfer_flags |= URB_FREE_BUFFER;
1355
1356         usb_mark_last_busy(data->udev);
1357         usb_anchor_urb(urb, &data->bulk_anchor);
1358
1359         err = usb_submit_urb(urb, mem_flags);
1360         if (err < 0) {
1361                 if (err != -EPERM && err != -ENODEV)
1362                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1363                                    urb, -err);
1364                 usb_unanchor_urb(urb);
1365         }
1366
1367         usb_free_urb(urb);
1368
1369         return err;
1370 }
1371
1372 static void btusb_isoc_complete(struct urb *urb)
1373 {
1374         struct hci_dev *hdev = urb->context;
1375         struct btusb_data *data = hci_get_drvdata(hdev);
1376         int i, err;
1377
1378         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1379                urb->actual_length);
1380
1381         if (!test_bit(HCI_RUNNING, &hdev->flags))
1382                 return;
1383
1384         if (urb->status == 0) {
1385                 for (i = 0; i < urb->number_of_packets; i++) {
1386                         unsigned int offset = urb->iso_frame_desc[i].offset;
1387                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1388
1389                         if (urb->iso_frame_desc[i].status)
1390                                 continue;
1391
1392                         hdev->stat.byte_rx += length;
1393
1394                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1395                                             length) < 0) {
1396                                 bt_dev_err(hdev, "corrupted SCO packet");
1397                                 hdev->stat.err_rx++;
1398                         }
1399                 }
1400         } else if (urb->status == -ENOENT) {
1401                 /* Avoid suspend failed when usb_kill_urb */
1402                 return;
1403         }
1404
1405         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1406                 return;
1407
1408         usb_anchor_urb(urb, &data->isoc_anchor);
1409
1410         err = usb_submit_urb(urb, GFP_ATOMIC);
1411         if (err < 0) {
1412                 /* -EPERM: urb is being killed;
1413                  * -ENODEV: device got disconnected
1414                  */
1415                 if (err != -EPERM && err != -ENODEV)
1416                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1417                                    urb, -err);
1418                 usb_unanchor_urb(urb);
1419         }
1420 }
1421
1422 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1423                                                int mtu, struct btusb_data *data)
1424 {
1425         int i = 0, offset = 0;
1426         unsigned int interval;
1427
1428         BT_DBG("len %d mtu %d", len, mtu);
1429
1430         /* For mSBC ALT 6 settings some chips need to transmit the data
1431          * continuously without the zero length of USB packets.
1432          */
1433         if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1434                 goto ignore_usb_alt6_packet_flow;
1435
1436         /* For mSBC ALT 6 setting the host will send the packet at continuous
1437          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1438          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1439          * To maintain the rate we send 63bytes of usb packets alternatively for
1440          * 7ms and 8ms to maintain the rate as 7.5ms.
1441          */
1442         if (data->usb_alt6_packet_flow) {
1443                 interval = 7;
1444                 data->usb_alt6_packet_flow = false;
1445         } else {
1446                 interval = 6;
1447                 data->usb_alt6_packet_flow = true;
1448         }
1449
1450         for (i = 0; i < interval; i++) {
1451                 urb->iso_frame_desc[i].offset = offset;
1452                 urb->iso_frame_desc[i].length = offset;
1453         }
1454
1455 ignore_usb_alt6_packet_flow:
1456         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1457                 urb->iso_frame_desc[i].offset = offset;
1458                 urb->iso_frame_desc[i].length = len;
1459                 i++;
1460         }
1461
1462         urb->number_of_packets = i;
1463 }
1464
1465 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1466 {
1467         int i, offset = 0;
1468
1469         BT_DBG("len %d mtu %d", len, mtu);
1470
1471         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1472                                         i++, offset += mtu, len -= mtu) {
1473                 urb->iso_frame_desc[i].offset = offset;
1474                 urb->iso_frame_desc[i].length = mtu;
1475         }
1476
1477         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1478                 urb->iso_frame_desc[i].offset = offset;
1479                 urb->iso_frame_desc[i].length = len;
1480                 i++;
1481         }
1482
1483         urb->number_of_packets = i;
1484 }
1485
1486 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1487 {
1488         struct btusb_data *data = hci_get_drvdata(hdev);
1489         struct urb *urb;
1490         unsigned char *buf;
1491         unsigned int pipe;
1492         int err, size;
1493
1494         BT_DBG("%s", hdev->name);
1495
1496         if (!data->isoc_rx_ep)
1497                 return -ENODEV;
1498
1499         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1500         if (!urb)
1501                 return -ENOMEM;
1502
1503         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1504                                                 BTUSB_MAX_ISOC_FRAMES;
1505
1506         buf = kmalloc(size, mem_flags);
1507         if (!buf) {
1508                 usb_free_urb(urb);
1509                 return -ENOMEM;
1510         }
1511
1512         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1513
1514         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1515                          hdev, data->isoc_rx_ep->bInterval);
1516
1517         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1518
1519         __fill_isoc_descriptor(urb, size,
1520                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1521
1522         usb_anchor_urb(urb, &data->isoc_anchor);
1523
1524         err = usb_submit_urb(urb, mem_flags);
1525         if (err < 0) {
1526                 if (err != -EPERM && err != -ENODEV)
1527                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1528                                    urb, -err);
1529                 usb_unanchor_urb(urb);
1530         }
1531
1532         usb_free_urb(urb);
1533
1534         return err;
1535 }
1536
1537 static void btusb_diag_complete(struct urb *urb)
1538 {
1539         struct hci_dev *hdev = urb->context;
1540         struct btusb_data *data = hci_get_drvdata(hdev);
1541         int err;
1542
1543         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1544                urb->actual_length);
1545
1546         if (urb->status == 0) {
1547                 struct sk_buff *skb;
1548
1549                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1550                 if (skb) {
1551                         skb_put_data(skb, urb->transfer_buffer,
1552                                      urb->actual_length);
1553                         hci_recv_diag(hdev, skb);
1554                 }
1555         } else if (urb->status == -ENOENT) {
1556                 /* Avoid suspend failed when usb_kill_urb */
1557                 return;
1558         }
1559
1560         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1561                 return;
1562
1563         usb_anchor_urb(urb, &data->diag_anchor);
1564         usb_mark_last_busy(data->udev);
1565
1566         err = usb_submit_urb(urb, GFP_ATOMIC);
1567         if (err < 0) {
1568                 /* -EPERM: urb is being killed;
1569                  * -ENODEV: device got disconnected
1570                  */
1571                 if (err != -EPERM && err != -ENODEV)
1572                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1573                                    urb, -err);
1574                 usb_unanchor_urb(urb);
1575         }
1576 }
1577
1578 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1579 {
1580         struct btusb_data *data = hci_get_drvdata(hdev);
1581         struct urb *urb;
1582         unsigned char *buf;
1583         unsigned int pipe;
1584         int err, size = HCI_MAX_FRAME_SIZE;
1585
1586         BT_DBG("%s", hdev->name);
1587
1588         if (!data->diag_rx_ep)
1589                 return -ENODEV;
1590
1591         urb = usb_alloc_urb(0, mem_flags);
1592         if (!urb)
1593                 return -ENOMEM;
1594
1595         buf = kmalloc(size, mem_flags);
1596         if (!buf) {
1597                 usb_free_urb(urb);
1598                 return -ENOMEM;
1599         }
1600
1601         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1602
1603         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1604                           btusb_diag_complete, hdev);
1605
1606         urb->transfer_flags |= URB_FREE_BUFFER;
1607
1608         usb_mark_last_busy(data->udev);
1609         usb_anchor_urb(urb, &data->diag_anchor);
1610
1611         err = usb_submit_urb(urb, mem_flags);
1612         if (err < 0) {
1613                 if (err != -EPERM && err != -ENODEV)
1614                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1615                                    urb, -err);
1616                 usb_unanchor_urb(urb);
1617         }
1618
1619         usb_free_urb(urb);
1620
1621         return err;
1622 }
1623
1624 static void btusb_tx_complete(struct urb *urb)
1625 {
1626         struct sk_buff *skb = urb->context;
1627         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1628         struct btusb_data *data = hci_get_drvdata(hdev);
1629         unsigned long flags;
1630
1631         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1632                urb->actual_length);
1633
1634         if (!test_bit(HCI_RUNNING, &hdev->flags))
1635                 goto done;
1636
1637         if (!urb->status) {
1638                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1639         } else {
1640                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1641                         hci_cmd_sync_cancel(hdev, -urb->status);
1642                 hdev->stat.err_tx++;
1643         }
1644
1645 done:
1646         spin_lock_irqsave(&data->txlock, flags);
1647         data->tx_in_flight--;
1648         spin_unlock_irqrestore(&data->txlock, flags);
1649
1650         kfree(urb->setup_packet);
1651
1652         kfree_skb(skb);
1653 }
1654
1655 static void btusb_isoc_tx_complete(struct urb *urb)
1656 {
1657         struct sk_buff *skb = urb->context;
1658         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1659
1660         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1661                urb->actual_length);
1662
1663         if (!test_bit(HCI_RUNNING, &hdev->flags))
1664                 goto done;
1665
1666         if (!urb->status)
1667                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1668         else
1669                 hdev->stat.err_tx++;
1670
1671 done:
1672         kfree(urb->setup_packet);
1673
1674         kfree_skb(skb);
1675 }
1676
1677 static int btusb_open(struct hci_dev *hdev)
1678 {
1679         struct btusb_data *data = hci_get_drvdata(hdev);
1680         int err;
1681
1682         BT_DBG("%s", hdev->name);
1683
1684         err = usb_autopm_get_interface(data->intf);
1685         if (err < 0)
1686                 return err;
1687
1688         /* Patching USB firmware files prior to starting any URBs of HCI path
1689          * It is more safe to use USB bulk channel for downloading USB patch
1690          */
1691         if (data->setup_on_usb) {
1692                 err = data->setup_on_usb(hdev);
1693                 if (err < 0)
1694                         goto setup_fail;
1695         }
1696
1697         data->intf->needs_remote_wakeup = 1;
1698
1699         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1700                 goto done;
1701
1702         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1703         if (err < 0)
1704                 goto failed;
1705
1706         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1707         if (err < 0) {
1708                 usb_kill_anchored_urbs(&data->intr_anchor);
1709                 goto failed;
1710         }
1711
1712         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1713         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1714
1715         if (data->diag) {
1716                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1717                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1718         }
1719
1720 done:
1721         usb_autopm_put_interface(data->intf);
1722         return 0;
1723
1724 failed:
1725         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1726 setup_fail:
1727         usb_autopm_put_interface(data->intf);
1728         return err;
1729 }
1730
1731 static void btusb_stop_traffic(struct btusb_data *data)
1732 {
1733         usb_kill_anchored_urbs(&data->intr_anchor);
1734         usb_kill_anchored_urbs(&data->bulk_anchor);
1735         usb_kill_anchored_urbs(&data->isoc_anchor);
1736         usb_kill_anchored_urbs(&data->diag_anchor);
1737         usb_kill_anchored_urbs(&data->ctrl_anchor);
1738 }
1739
1740 static int btusb_close(struct hci_dev *hdev)
1741 {
1742         struct btusb_data *data = hci_get_drvdata(hdev);
1743         int err;
1744
1745         BT_DBG("%s", hdev->name);
1746
1747         cancel_delayed_work(&data->rx_work);
1748         cancel_work_sync(&data->work);
1749         cancel_work_sync(&data->waker);
1750
1751         skb_queue_purge(&data->acl_q);
1752
1753         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1754         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1755         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1756         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1757
1758         btusb_stop_traffic(data);
1759         btusb_free_frags(data);
1760
1761         err = usb_autopm_get_interface(data->intf);
1762         if (err < 0)
1763                 goto failed;
1764
1765         data->intf->needs_remote_wakeup = 0;
1766
1767         /* Enable remote wake up for auto-suspend */
1768         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1769                 data->intf->needs_remote_wakeup = 1;
1770
1771         usb_autopm_put_interface(data->intf);
1772
1773 failed:
1774         usb_scuttle_anchored_urbs(&data->deferred);
1775         return 0;
1776 }
1777
1778 static int btusb_flush(struct hci_dev *hdev)
1779 {
1780         struct btusb_data *data = hci_get_drvdata(hdev);
1781
1782         BT_DBG("%s", hdev->name);
1783
1784         cancel_delayed_work(&data->rx_work);
1785
1786         skb_queue_purge(&data->acl_q);
1787
1788         usb_kill_anchored_urbs(&data->tx_anchor);
1789         btusb_free_frags(data);
1790
1791         return 0;
1792 }
1793
1794 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1795 {
1796         struct btusb_data *data = hci_get_drvdata(hdev);
1797         struct usb_ctrlrequest *dr;
1798         struct urb *urb;
1799         unsigned int pipe;
1800
1801         urb = usb_alloc_urb(0, GFP_KERNEL);
1802         if (!urb)
1803                 return ERR_PTR(-ENOMEM);
1804
1805         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1806         if (!dr) {
1807                 usb_free_urb(urb);
1808                 return ERR_PTR(-ENOMEM);
1809         }
1810
1811         dr->bRequestType = data->cmdreq_type;
1812         dr->bRequest     = data->cmdreq;
1813         dr->wIndex       = 0;
1814         dr->wValue       = 0;
1815         dr->wLength      = __cpu_to_le16(skb->len);
1816
1817         pipe = usb_sndctrlpipe(data->udev, 0x00);
1818
1819         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1820                              skb->data, skb->len, btusb_tx_complete, skb);
1821
1822         skb->dev = (void *)hdev;
1823
1824         return urb;
1825 }
1826
1827 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1828 {
1829         struct btusb_data *data = hci_get_drvdata(hdev);
1830         struct urb *urb;
1831         unsigned int pipe;
1832
1833         if (!data->bulk_tx_ep)
1834                 return ERR_PTR(-ENODEV);
1835
1836         urb = usb_alloc_urb(0, GFP_KERNEL);
1837         if (!urb)
1838                 return ERR_PTR(-ENOMEM);
1839
1840         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1841
1842         usb_fill_bulk_urb(urb, data->udev, pipe,
1843                           skb->data, skb->len, btusb_tx_complete, skb);
1844
1845         skb->dev = (void *)hdev;
1846
1847         return urb;
1848 }
1849
1850 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1851 {
1852         struct btusb_data *data = hci_get_drvdata(hdev);
1853         struct urb *urb;
1854         unsigned int pipe;
1855
1856         if (!data->isoc_tx_ep)
1857                 return ERR_PTR(-ENODEV);
1858
1859         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1860         if (!urb)
1861                 return ERR_PTR(-ENOMEM);
1862
1863         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1864
1865         usb_fill_int_urb(urb, data->udev, pipe,
1866                          skb->data, skb->len, btusb_isoc_tx_complete,
1867                          skb, data->isoc_tx_ep->bInterval);
1868
1869         urb->transfer_flags  = URB_ISO_ASAP;
1870
1871         if (data->isoc_altsetting == 6)
1872                 __fill_isoc_descriptor_msbc(urb, skb->len,
1873                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1874                                             data);
1875         else
1876                 __fill_isoc_descriptor(urb, skb->len,
1877                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1878         skb->dev = (void *)hdev;
1879
1880         return urb;
1881 }
1882
1883 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1884 {
1885         struct btusb_data *data = hci_get_drvdata(hdev);
1886         int err;
1887
1888         usb_anchor_urb(urb, &data->tx_anchor);
1889
1890         err = usb_submit_urb(urb, GFP_KERNEL);
1891         if (err < 0) {
1892                 if (err != -EPERM && err != -ENODEV)
1893                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1894                                    urb, -err);
1895                 kfree(urb->setup_packet);
1896                 usb_unanchor_urb(urb);
1897         } else {
1898                 usb_mark_last_busy(data->udev);
1899         }
1900
1901         usb_free_urb(urb);
1902         return err;
1903 }
1904
1905 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1906 {
1907         struct btusb_data *data = hci_get_drvdata(hdev);
1908         unsigned long flags;
1909         bool suspending;
1910
1911         spin_lock_irqsave(&data->txlock, flags);
1912         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1913         if (!suspending)
1914                 data->tx_in_flight++;
1915         spin_unlock_irqrestore(&data->txlock, flags);
1916
1917         if (!suspending)
1918                 return submit_tx_urb(hdev, urb);
1919
1920         usb_anchor_urb(urb, &data->deferred);
1921         schedule_work(&data->waker);
1922
1923         usb_free_urb(urb);
1924         return 0;
1925 }
1926
1927 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1928 {
1929         struct urb *urb;
1930
1931         BT_DBG("%s", hdev->name);
1932
1933         switch (hci_skb_pkt_type(skb)) {
1934         case HCI_COMMAND_PKT:
1935                 urb = alloc_ctrl_urb(hdev, skb);
1936                 if (IS_ERR(urb))
1937                         return PTR_ERR(urb);
1938
1939                 hdev->stat.cmd_tx++;
1940                 return submit_or_queue_tx_urb(hdev, urb);
1941
1942         case HCI_ACLDATA_PKT:
1943                 urb = alloc_bulk_urb(hdev, skb);
1944                 if (IS_ERR(urb))
1945                         return PTR_ERR(urb);
1946
1947                 hdev->stat.acl_tx++;
1948                 return submit_or_queue_tx_urb(hdev, urb);
1949
1950         case HCI_SCODATA_PKT:
1951                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1952                         return -ENODEV;
1953
1954                 urb = alloc_isoc_urb(hdev, skb);
1955                 if (IS_ERR(urb))
1956                         return PTR_ERR(urb);
1957
1958                 hdev->stat.sco_tx++;
1959                 return submit_tx_urb(hdev, urb);
1960
1961         case HCI_ISODATA_PKT:
1962                 urb = alloc_bulk_urb(hdev, skb);
1963                 if (IS_ERR(urb))
1964                         return PTR_ERR(urb);
1965
1966                 return submit_or_queue_tx_urb(hdev, urb);
1967         }
1968
1969         return -EILSEQ;
1970 }
1971
1972 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1973 {
1974         struct btusb_data *data = hci_get_drvdata(hdev);
1975
1976         BT_DBG("%s evt %d", hdev->name, evt);
1977
1978         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1979                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1980                 data->air_mode = evt;
1981                 schedule_work(&data->work);
1982         }
1983 }
1984
1985 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1986 {
1987         struct btusb_data *data = hci_get_drvdata(hdev);
1988         struct usb_interface *intf = data->isoc;
1989         struct usb_endpoint_descriptor *ep_desc;
1990         int i, err;
1991
1992         if (!data->isoc)
1993                 return -ENODEV;
1994
1995         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1996         if (err < 0) {
1997                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1998                 return err;
1999         }
2000
2001         data->isoc_altsetting = altsetting;
2002
2003         data->isoc_tx_ep = NULL;
2004         data->isoc_rx_ep = NULL;
2005
2006         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2007                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2008
2009                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2010                         data->isoc_tx_ep = ep_desc;
2011                         continue;
2012                 }
2013
2014                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2015                         data->isoc_rx_ep = ep_desc;
2016                         continue;
2017                 }
2018         }
2019
2020         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2021                 bt_dev_err(hdev, "invalid SCO descriptors");
2022                 return -ENODEV;
2023         }
2024
2025         return 0;
2026 }
2027
2028 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2029 {
2030         struct btusb_data *data = hci_get_drvdata(hdev);
2031         int err;
2032
2033         if (data->isoc_altsetting != new_alts) {
2034                 unsigned long flags;
2035
2036                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2037                 usb_kill_anchored_urbs(&data->isoc_anchor);
2038
2039                 /* When isochronous alternate setting needs to be
2040                  * changed, because SCO connection has been added
2041                  * or removed, a packet fragment may be left in the
2042                  * reassembling state. This could lead to wrongly
2043                  * assembled fragments.
2044                  *
2045                  * Clear outstanding fragment when selecting a new
2046                  * alternate setting.
2047                  */
2048                 spin_lock_irqsave(&data->rxlock, flags);
2049                 kfree_skb(data->sco_skb);
2050                 data->sco_skb = NULL;
2051                 spin_unlock_irqrestore(&data->rxlock, flags);
2052
2053                 err = __set_isoc_interface(hdev, new_alts);
2054                 if (err < 0)
2055                         return err;
2056         }
2057
2058         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2059                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2060                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2061                 else
2062                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2063         }
2064
2065         return 0;
2066 }
2067
2068 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2069                                                         int alt)
2070 {
2071         struct usb_interface *intf = data->isoc;
2072         int i;
2073
2074         BT_DBG("Looking for Alt no :%d", alt);
2075
2076         if (!intf)
2077                 return NULL;
2078
2079         for (i = 0; i < intf->num_altsetting; i++) {
2080                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2081                         return &intf->altsetting[i];
2082         }
2083
2084         return NULL;
2085 }
2086
2087 static void btusb_work(struct work_struct *work)
2088 {
2089         struct btusb_data *data = container_of(work, struct btusb_data, work);
2090         struct hci_dev *hdev = data->hdev;
2091         int new_alts = 0;
2092         int err;
2093
2094         if (data->sco_num > 0) {
2095                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2096                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2097                         if (err < 0) {
2098                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2099                                 usb_kill_anchored_urbs(&data->isoc_anchor);
2100                                 return;
2101                         }
2102
2103                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2104                 }
2105
2106                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2107                         if (hdev->voice_setting & 0x0020) {
2108                                 static const int alts[3] = { 2, 4, 5 };
2109
2110                                 new_alts = alts[data->sco_num - 1];
2111                         } else {
2112                                 new_alts = data->sco_num;
2113                         }
2114                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2115                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2116                          * many adapters do not support it.  Alt 1 appears to
2117                          * work for all adapters that do not have alt 6, and
2118                          * which work with WBS at all.  Some devices prefer
2119                          * alt 3 (HCI payload >= 60 Bytes let air packet
2120                          * data satisfy 60 bytes), requiring
2121                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2122                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2123                          */
2124                         if (btusb_find_altsetting(data, 6))
2125                                 new_alts = 6;
2126                         else if (btusb_find_altsetting(data, 3) &&
2127                                  hdev->sco_mtu >= 72 &&
2128                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2129                                 new_alts = 3;
2130                         else
2131                                 new_alts = 1;
2132                 }
2133
2134                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2135                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2136         } else {
2137                 usb_kill_anchored_urbs(&data->isoc_anchor);
2138
2139                 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2140                         __set_isoc_interface(hdev, 0);
2141
2142                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2143                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2144         }
2145 }
2146
2147 static void btusb_waker(struct work_struct *work)
2148 {
2149         struct btusb_data *data = container_of(work, struct btusb_data, waker);
2150         int err;
2151
2152         err = usb_autopm_get_interface(data->intf);
2153         if (err < 0)
2154                 return;
2155
2156         usb_autopm_put_interface(data->intf);
2157 }
2158
2159 static void btusb_rx_work(struct work_struct *work)
2160 {
2161         struct btusb_data *data = container_of(work, struct btusb_data,
2162                                                rx_work.work);
2163         struct sk_buff *skb;
2164
2165         /* Dequeue ACL data received during the interval */
2166         while ((skb = skb_dequeue(&data->acl_q)))
2167                 data->recv_acl(data->hdev, skb);
2168 }
2169
2170 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2171 {
2172         struct sk_buff *skb;
2173         u8 val = 0x00;
2174
2175         BT_DBG("%s", hdev->name);
2176
2177         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2178         if (IS_ERR(skb))
2179                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2180         else
2181                 kfree_skb(skb);
2182
2183         return 0;
2184 }
2185
2186 static int btusb_setup_csr(struct hci_dev *hdev)
2187 {
2188         struct btusb_data *data = hci_get_drvdata(hdev);
2189         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2190         struct hci_rp_read_local_version *rp;
2191         struct sk_buff *skb;
2192         bool is_fake = false;
2193         int ret;
2194
2195         BT_DBG("%s", hdev->name);
2196
2197         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2198                              HCI_INIT_TIMEOUT);
2199         if (IS_ERR(skb)) {
2200                 int err = PTR_ERR(skb);
2201                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2202                 return err;
2203         }
2204
2205         rp = skb_pull_data(skb, sizeof(*rp));
2206         if (!rp) {
2207                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2208                 kfree_skb(skb);
2209                 return -EIO;
2210         }
2211
2212         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2213                     rp->hci_ver, le16_to_cpu(rp->hci_rev));
2214
2215         bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2216                     rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2217                     le16_to_cpu(rp->manufacturer));
2218
2219         /* Detect a wide host of Chinese controllers that aren't CSR.
2220          *
2221          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2222          *
2223          * The main thing they have in common is that these are really popular low-cost
2224          * options that support newer Bluetooth versions but rely on heavy VID/PID
2225          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2226          *
2227          * We detect actual CSR devices by checking that the HCI manufacturer code
2228          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2229          * HCI rev values always match. As they both store the firmware number.
2230          */
2231         if (le16_to_cpu(rp->manufacturer) != 10 ||
2232             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2233                 is_fake = true;
2234
2235         /* Known legit CSR firmware build numbers and their supported BT versions:
2236          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2237          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2238          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2239          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2240          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2241          *
2242          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2243          *      support BT 1.1 only; so it's a dead giveaway when some
2244          *      third-party BT 4.0 dongle reuses it.
2245          */
2246         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2247                  rp->hci_ver > BLUETOOTH_VER_1_1)
2248                 is_fake = true;
2249
2250         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2251                  rp->hci_ver > BLUETOOTH_VER_1_2)
2252                 is_fake = true;
2253
2254         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2255                  rp->hci_ver > BLUETOOTH_VER_2_0)
2256                 is_fake = true;
2257
2258         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2259                  rp->hci_ver > BLUETOOTH_VER_2_1)
2260                 is_fake = true;
2261
2262         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2263                  rp->hci_ver > BLUETOOTH_VER_4_0)
2264                 is_fake = true;
2265
2266         /* Other clones which beat all the above checks */
2267         else if (bcdDevice == 0x0134 &&
2268                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2269                  rp->hci_ver == BLUETOOTH_VER_2_0)
2270                 is_fake = true;
2271
2272         if (is_fake) {
2273                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2274
2275                 /* Generally these clones have big discrepancies between
2276                  * advertised features and what's actually supported.
2277                  * Probably will need to be expanded in the future;
2278                  * without these the controller will lock up.
2279                  */
2280                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2281                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2282                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2283                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2284
2285                 /* Clear the reset quirk since this is not an actual
2286                  * early Bluetooth 1.1 device from CSR.
2287                  */
2288                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2289                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2290
2291                 /*
2292                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2293                  *
2294                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2295                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2296                  *
2297                  * These controllers are really messed-up.
2298                  *
2299                  * 1. Their bulk RX endpoint will never report any data unless
2300                  *    the device was suspended at least once (yes, really).
2301                  * 2. They will not wakeup when autosuspended and receiving data
2302                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2303                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2304                  *
2305                  * To fix 1. enable runtime-suspend, force-suspend the
2306                  * HCI and then wake-it up by disabling runtime-suspend.
2307                  *
2308                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2309                  * will still be autosuspended when it is not open.
2310                  *
2311                  * --
2312                  *
2313                  * Because these are widespread problems we prefer generic solutions; so
2314                  * apply this initialization quirk to every controller that gets here,
2315                  * it should be harmless. The alternative is to not work at all.
2316                  */
2317                 pm_runtime_allow(&data->udev->dev);
2318
2319                 ret = pm_runtime_suspend(&data->udev->dev);
2320                 if (ret >= 0)
2321                         msleep(200);
2322                 else
2323                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2324
2325                 pm_runtime_forbid(&data->udev->dev);
2326
2327                 device_set_wakeup_capable(&data->udev->dev, false);
2328
2329                 /* Re-enable autosuspend if this was requested */
2330                 if (enable_autosuspend)
2331                         usb_enable_autosuspend(data->udev);
2332         }
2333
2334         kfree_skb(skb);
2335
2336         return 0;
2337 }
2338
2339 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2340 {
2341         struct sk_buff *skb;
2342         struct hci_event_hdr *hdr;
2343         struct hci_ev_cmd_complete *evt;
2344
2345         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2346         if (!skb)
2347                 return -ENOMEM;
2348
2349         hdr = skb_put(skb, sizeof(*hdr));
2350         hdr->evt = HCI_EV_CMD_COMPLETE;
2351         hdr->plen = sizeof(*evt) + 1;
2352
2353         evt = skb_put(skb, sizeof(*evt));
2354         evt->ncmd = 0x01;
2355         evt->opcode = cpu_to_le16(opcode);
2356
2357         skb_put_u8(skb, 0x00);
2358
2359         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2360
2361         return hci_recv_frame(hdev, skb);
2362 }
2363
2364 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2365                                  int count)
2366 {
2367         struct hci_dev *hdev = data->hdev;
2368
2369         /* When the device is in bootloader mode, then it can send
2370          * events via the bulk endpoint. These events are treated the
2371          * same way as the ones received from the interrupt endpoint.
2372          */
2373         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2374                 return btusb_recv_intr(data, buffer, count);
2375
2376         return btusb_recv_bulk(data, buffer, count);
2377 }
2378
2379 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2380 {
2381         if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2382                 struct hci_event_hdr *hdr = (void *)skb->data;
2383
2384                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2385                     hdr->plen > 0) {
2386                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2387                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2388
2389                         switch (skb->data[2]) {
2390                         case 0x02:
2391                                 /* When switching to the operational firmware
2392                                  * the device sends a vendor specific event
2393                                  * indicating that the bootup completed.
2394                                  */
2395                                 btintel_bootup(hdev, ptr, len);
2396                                 break;
2397                         case 0x06:
2398                                 /* When the firmware loading completes the
2399                                  * device sends out a vendor specific event
2400                                  * indicating the result of the firmware
2401                                  * loading.
2402                                  */
2403                                 btintel_secure_send_result(hdev, ptr, len);
2404                                 break;
2405                         }
2406                 }
2407         }
2408
2409         return hci_recv_frame(hdev, skb);
2410 }
2411
2412 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2413 {
2414         struct urb *urb;
2415
2416         BT_DBG("%s", hdev->name);
2417
2418         switch (hci_skb_pkt_type(skb)) {
2419         case HCI_COMMAND_PKT:
2420                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2421                         struct hci_command_hdr *cmd = (void *)skb->data;
2422                         __u16 opcode = le16_to_cpu(cmd->opcode);
2423
2424                         /* When in bootloader mode and the command 0xfc09
2425                          * is received, it needs to be send down the
2426                          * bulk endpoint. So allocate a bulk URB instead.
2427                          */
2428                         if (opcode == 0xfc09)
2429                                 urb = alloc_bulk_urb(hdev, skb);
2430                         else
2431                                 urb = alloc_ctrl_urb(hdev, skb);
2432
2433                         /* When the 0xfc01 command is issued to boot into
2434                          * the operational firmware, it will actually not
2435                          * send a command complete event. To keep the flow
2436                          * control working inject that event here.
2437                          */
2438                         if (opcode == 0xfc01)
2439                                 inject_cmd_complete(hdev, opcode);
2440                 } else {
2441                         urb = alloc_ctrl_urb(hdev, skb);
2442                 }
2443                 if (IS_ERR(urb))
2444                         return PTR_ERR(urb);
2445
2446                 hdev->stat.cmd_tx++;
2447                 return submit_or_queue_tx_urb(hdev, urb);
2448
2449         case HCI_ACLDATA_PKT:
2450                 urb = alloc_bulk_urb(hdev, skb);
2451                 if (IS_ERR(urb))
2452                         return PTR_ERR(urb);
2453
2454                 hdev->stat.acl_tx++;
2455                 return submit_or_queue_tx_urb(hdev, urb);
2456
2457         case HCI_SCODATA_PKT:
2458                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2459                         return -ENODEV;
2460
2461                 urb = alloc_isoc_urb(hdev, skb);
2462                 if (IS_ERR(urb))
2463                         return PTR_ERR(urb);
2464
2465                 hdev->stat.sco_tx++;
2466                 return submit_tx_urb(hdev, urb);
2467
2468         case HCI_ISODATA_PKT:
2469                 urb = alloc_bulk_urb(hdev, skb);
2470                 if (IS_ERR(urb))
2471                         return PTR_ERR(urb);
2472
2473                 return submit_or_queue_tx_urb(hdev, urb);
2474         }
2475
2476         return -EILSEQ;
2477 }
2478
2479 static int btusb_setup_realtek(struct hci_dev *hdev)
2480 {
2481         struct btusb_data *data = hci_get_drvdata(hdev);
2482         int ret;
2483
2484         ret = btrtl_setup_realtek(hdev);
2485
2486         if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2487                 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2488
2489         return ret;
2490 }
2491
2492 /* UHW CR mapping */
2493 #define MTK_BT_MISC             0x70002510
2494 #define MTK_BT_SUBSYS_RST       0x70002610
2495 #define MTK_UDMA_INT_STA_BT     0x74000024
2496 #define MTK_UDMA_INT_STA_BT1    0x74000308
2497 #define MTK_BT_WDT_STATUS       0x740003A0
2498 #define MTK_EP_RST_OPT          0x74011890
2499 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2500 #define MTK_BT_RST_DONE         0x00000100
2501 #define MTK_BT_RESET_WAIT_MS    100
2502 #define MTK_BT_RESET_NUM_TRIES  10
2503
2504 static void btusb_mtk_wmt_recv(struct urb *urb)
2505 {
2506         struct hci_dev *hdev = urb->context;
2507         struct btusb_data *data = hci_get_drvdata(hdev);
2508         struct sk_buff *skb;
2509         int err;
2510
2511         if (urb->status == 0 && urb->actual_length > 0) {
2512                 hdev->stat.byte_rx += urb->actual_length;
2513
2514                 /* WMT event shouldn't be fragmented and the size should be
2515                  * less than HCI_WMT_MAX_EVENT_SIZE.
2516                  */
2517                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2518                 if (!skb) {
2519                         hdev->stat.err_rx++;
2520                         kfree(urb->setup_packet);
2521                         return;
2522                 }
2523
2524                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2525                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2526
2527                 /* When someone waits for the WMT event, the skb is being cloned
2528                  * and being processed the events from there then.
2529                  */
2530                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2531                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2532                         if (!data->evt_skb) {
2533                                 kfree_skb(skb);
2534                                 kfree(urb->setup_packet);
2535                                 return;
2536                         }
2537                 }
2538
2539                 err = hci_recv_frame(hdev, skb);
2540                 if (err < 0) {
2541                         kfree_skb(data->evt_skb);
2542                         data->evt_skb = NULL;
2543                         kfree(urb->setup_packet);
2544                         return;
2545                 }
2546
2547                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2548                                        &data->flags)) {
2549                         /* Barrier to sync with other CPUs */
2550                         smp_mb__after_atomic();
2551                         wake_up_bit(&data->flags,
2552                                     BTUSB_TX_WAIT_VND_EVT);
2553                 }
2554                 kfree(urb->setup_packet);
2555                 return;
2556         } else if (urb->status == -ENOENT) {
2557                 /* Avoid suspend failed when usb_kill_urb */
2558                 return;
2559         }
2560
2561         usb_mark_last_busy(data->udev);
2562
2563         /* The URB complete handler is still called with urb->actual_length = 0
2564          * when the event is not available, so we should keep re-submitting
2565          * URB until WMT event returns, Also, It's necessary to wait some time
2566          * between the two consecutive control URBs to relax the target device
2567          * to generate the event. Otherwise, the WMT event cannot return from
2568          * the device successfully.
2569          */
2570         udelay(500);
2571
2572         usb_anchor_urb(urb, &data->ctrl_anchor);
2573         err = usb_submit_urb(urb, GFP_ATOMIC);
2574         if (err < 0) {
2575                 kfree(urb->setup_packet);
2576                 /* -EPERM: urb is being killed;
2577                  * -ENODEV: device got disconnected
2578                  */
2579                 if (err != -EPERM && err != -ENODEV)
2580                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2581                                    urb, -err);
2582                 usb_unanchor_urb(urb);
2583         }
2584 }
2585
2586 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2587 {
2588         struct btusb_data *data = hci_get_drvdata(hdev);
2589         struct usb_ctrlrequest *dr;
2590         unsigned char *buf;
2591         int err, size = 64;
2592         unsigned int pipe;
2593         struct urb *urb;
2594
2595         urb = usb_alloc_urb(0, GFP_KERNEL);
2596         if (!urb)
2597                 return -ENOMEM;
2598
2599         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2600         if (!dr) {
2601                 usb_free_urb(urb);
2602                 return -ENOMEM;
2603         }
2604
2605         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2606         dr->bRequest     = 1;
2607         dr->wIndex       = cpu_to_le16(0);
2608         dr->wValue       = cpu_to_le16(48);
2609         dr->wLength      = cpu_to_le16(size);
2610
2611         buf = kmalloc(size, GFP_KERNEL);
2612         if (!buf) {
2613                 kfree(dr);
2614                 usb_free_urb(urb);
2615                 return -ENOMEM;
2616         }
2617
2618         pipe = usb_rcvctrlpipe(data->udev, 0);
2619
2620         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2621                              buf, size, btusb_mtk_wmt_recv, hdev);
2622
2623         urb->transfer_flags |= URB_FREE_BUFFER;
2624
2625         usb_anchor_urb(urb, &data->ctrl_anchor);
2626         err = usb_submit_urb(urb, GFP_KERNEL);
2627         if (err < 0) {
2628                 if (err != -EPERM && err != -ENODEV)
2629                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2630                                    urb, -err);
2631                 usb_unanchor_urb(urb);
2632         }
2633
2634         usb_free_urb(urb);
2635
2636         return err;
2637 }
2638
2639 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2640                                   struct btmtk_hci_wmt_params *wmt_params)
2641 {
2642         struct btusb_data *data = hci_get_drvdata(hdev);
2643         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2644         u32 hlen, status = BTMTK_WMT_INVALID;
2645         struct btmtk_hci_wmt_evt *wmt_evt;
2646         struct btmtk_hci_wmt_cmd *wc;
2647         struct btmtk_wmt_hdr *hdr;
2648         int err;
2649
2650         /* Send the WMT command and wait until the WMT event returns */
2651         hlen = sizeof(*hdr) + wmt_params->dlen;
2652         if (hlen > 255)
2653                 return -EINVAL;
2654
2655         wc = kzalloc(hlen, GFP_KERNEL);
2656         if (!wc)
2657                 return -ENOMEM;
2658
2659         hdr = &wc->hdr;
2660         hdr->dir = 1;
2661         hdr->op = wmt_params->op;
2662         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2663         hdr->flag = wmt_params->flag;
2664         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2665
2666         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2667
2668         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2669          * it needs constantly polling control pipe until the host received the
2670          * WMT event, thus, we should require to specifically acquire PM counter
2671          * on the USB to prevent the interface from entering auto suspended
2672          * while WMT cmd/event in progress.
2673          */
2674         err = usb_autopm_get_interface(data->intf);
2675         if (err < 0)
2676                 goto err_free_wc;
2677
2678         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2679
2680         if (err < 0) {
2681                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2682                 usb_autopm_put_interface(data->intf);
2683                 goto err_free_wc;
2684         }
2685
2686         /* Submit control IN URB on demand to process the WMT event */
2687         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2688
2689         usb_autopm_put_interface(data->intf);
2690
2691         if (err < 0)
2692                 goto err_free_wc;
2693
2694         /* The vendor specific WMT commands are all answered by a vendor
2695          * specific event and will have the Command Status or Command
2696          * Complete as with usual HCI command flow control.
2697          *
2698          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2699          * state to be cleared. The driver specific event receive routine
2700          * will clear that state and with that indicate completion of the
2701          * WMT command.
2702          */
2703         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2704                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2705         if (err == -EINTR) {
2706                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2707                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2708                 goto err_free_wc;
2709         }
2710
2711         if (err) {
2712                 bt_dev_err(hdev, "Execution of wmt command timed out");
2713                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2714                 err = -ETIMEDOUT;
2715                 goto err_free_wc;
2716         }
2717
2718         /* Parse and handle the return WMT event */
2719         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2720         if (wmt_evt->whdr.op != hdr->op) {
2721                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2722                            wmt_evt->whdr.op, hdr->op);
2723                 err = -EIO;
2724                 goto err_free_skb;
2725         }
2726
2727         switch (wmt_evt->whdr.op) {
2728         case BTMTK_WMT_SEMAPHORE:
2729                 if (wmt_evt->whdr.flag == 2)
2730                         status = BTMTK_WMT_PATCH_UNDONE;
2731                 else
2732                         status = BTMTK_WMT_PATCH_DONE;
2733                 break;
2734         case BTMTK_WMT_FUNC_CTRL:
2735                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2736                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2737                         status = BTMTK_WMT_ON_DONE;
2738                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2739                         status = BTMTK_WMT_ON_PROGRESS;
2740                 else
2741                         status = BTMTK_WMT_ON_UNDONE;
2742                 break;
2743         case BTMTK_WMT_PATCH_DWNLD:
2744                 if (wmt_evt->whdr.flag == 2)
2745                         status = BTMTK_WMT_PATCH_DONE;
2746                 else if (wmt_evt->whdr.flag == 1)
2747                         status = BTMTK_WMT_PATCH_PROGRESS;
2748                 else
2749                         status = BTMTK_WMT_PATCH_UNDONE;
2750                 break;
2751         }
2752
2753         if (wmt_params->status)
2754                 *wmt_params->status = status;
2755
2756 err_free_skb:
2757         kfree_skb(data->evt_skb);
2758         data->evt_skb = NULL;
2759 err_free_wc:
2760         kfree(wc);
2761         return err;
2762 }
2763
2764 static int btusb_mtk_func_query(struct hci_dev *hdev)
2765 {
2766         struct btmtk_hci_wmt_params wmt_params;
2767         int status, err;
2768         u8 param = 0;
2769
2770         /* Query whether the function is enabled */
2771         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2772         wmt_params.flag = 4;
2773         wmt_params.dlen = sizeof(param);
2774         wmt_params.data = &param;
2775         wmt_params.status = &status;
2776
2777         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2778         if (err < 0) {
2779                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2780                 return err;
2781         }
2782
2783         return status;
2784 }
2785
2786 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2787 {
2788         struct hci_dev *hdev = data->hdev;
2789         int pipe, err;
2790         void *buf;
2791
2792         buf = kzalloc(4, GFP_KERNEL);
2793         if (!buf)
2794                 return -ENOMEM;
2795
2796         put_unaligned_le32(val, buf);
2797
2798         pipe = usb_sndctrlpipe(data->udev, 0);
2799         err = usb_control_msg(data->udev, pipe, 0x02,
2800                               0x5E,
2801                               reg >> 16, reg & 0xffff,
2802                               buf, 4, USB_CTRL_SET_TIMEOUT);
2803         if (err < 0) {
2804                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2805                 goto err_free_buf;
2806         }
2807
2808 err_free_buf:
2809         kfree(buf);
2810
2811         return err;
2812 }
2813
2814 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2815 {
2816         struct hci_dev *hdev = data->hdev;
2817         int pipe, err;
2818         void *buf;
2819
2820         buf = kzalloc(4, GFP_KERNEL);
2821         if (!buf)
2822                 return -ENOMEM;
2823
2824         pipe = usb_rcvctrlpipe(data->udev, 0);
2825         err = usb_control_msg(data->udev, pipe, 0x01,
2826                               0xDE,
2827                               reg >> 16, reg & 0xffff,
2828                               buf, 4, USB_CTRL_SET_TIMEOUT);
2829         if (err < 0) {
2830                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2831                 goto err_free_buf;
2832         }
2833
2834         *val = get_unaligned_le32(buf);
2835         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2836
2837 err_free_buf:
2838         kfree(buf);
2839
2840         return err;
2841 }
2842
2843 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2844 {
2845         int pipe, err, size = sizeof(u32);
2846         void *buf;
2847
2848         buf = kzalloc(size, GFP_KERNEL);
2849         if (!buf)
2850                 return -ENOMEM;
2851
2852         pipe = usb_rcvctrlpipe(data->udev, 0);
2853         err = usb_control_msg(data->udev, pipe, 0x63,
2854                               USB_TYPE_VENDOR | USB_DIR_IN,
2855                               reg >> 16, reg & 0xffff,
2856                               buf, size, USB_CTRL_SET_TIMEOUT);
2857         if (err < 0)
2858                 goto err_free_buf;
2859
2860         *val = get_unaligned_le32(buf);
2861
2862 err_free_buf:
2863         kfree(buf);
2864
2865         return err;
2866 }
2867
2868 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2869 {
2870         return btusb_mtk_reg_read(data, reg, id);
2871 }
2872
2873 static int btusb_mtk_setup(struct hci_dev *hdev)
2874 {
2875         struct btusb_data *data = hci_get_drvdata(hdev);
2876         struct btmtk_hci_wmt_params wmt_params;
2877         ktime_t calltime, delta, rettime;
2878         struct btmtk_tci_sleep tci_sleep;
2879         unsigned long long duration;
2880         struct sk_buff *skb;
2881         const char *fwname;
2882         int err, status;
2883         u32 dev_id;
2884         char fw_bin_name[64];
2885         u32 fw_version = 0;
2886         u8 param;
2887
2888         calltime = ktime_get();
2889
2890         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2891         if (err < 0) {
2892                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2893                 return err;
2894         }
2895
2896         if (!dev_id) {
2897                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2898                 if (err < 0) {
2899                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
2900                         return err;
2901                 }
2902                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2903                 if (err < 0) {
2904                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2905                         return err;
2906                 }
2907         }
2908
2909         switch (dev_id) {
2910         case 0x7663:
2911                 fwname = FIRMWARE_MT7663;
2912                 break;
2913         case 0x7668:
2914                 fwname = FIRMWARE_MT7668;
2915                 break;
2916         case 0x7922:
2917         case 0x7961:
2918                 snprintf(fw_bin_name, sizeof(fw_bin_name),
2919                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2920                          dev_id & 0xffff, (fw_version & 0xff) + 1);
2921                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2922                                                 btusb_mtk_hci_wmt_sync);
2923                 if (err < 0) {
2924                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2925                         return err;
2926                 }
2927
2928                 /* It's Device EndPoint Reset Option Register */
2929                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2930
2931                 /* Enable Bluetooth protocol */
2932                 param = 1;
2933                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2934                 wmt_params.flag = 0;
2935                 wmt_params.dlen = sizeof(param);
2936                 wmt_params.data = &param;
2937                 wmt_params.status = NULL;
2938
2939                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2940                 if (err < 0) {
2941                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2942                         return err;
2943                 }
2944
2945                 hci_set_msft_opcode(hdev, 0xFD30);
2946                 hci_set_aosp_capable(hdev);
2947                 goto done;
2948         default:
2949                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2950                            dev_id);
2951                 return -ENODEV;
2952         }
2953
2954         /* Query whether the firmware is already download */
2955         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2956         wmt_params.flag = 1;
2957         wmt_params.dlen = 0;
2958         wmt_params.data = NULL;
2959         wmt_params.status = &status;
2960
2961         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2962         if (err < 0) {
2963                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2964                 return err;
2965         }
2966
2967         if (status == BTMTK_WMT_PATCH_DONE) {
2968                 bt_dev_info(hdev, "firmware already downloaded");
2969                 goto ignore_setup_fw;
2970         }
2971
2972         /* Setup a firmware which the device definitely requires */
2973         err = btmtk_setup_firmware(hdev, fwname,
2974                                    btusb_mtk_hci_wmt_sync);
2975         if (err < 0)
2976                 return err;
2977
2978 ignore_setup_fw:
2979         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2980                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2981                                  2000, 5000000);
2982         /* -ETIMEDOUT happens */
2983         if (err < 0)
2984                 return err;
2985
2986         /* The other errors happen in btusb_mtk_func_query */
2987         if (status < 0)
2988                 return status;
2989
2990         if (status == BTMTK_WMT_ON_DONE) {
2991                 bt_dev_info(hdev, "function already on");
2992                 goto ignore_func_on;
2993         }
2994
2995         /* Enable Bluetooth protocol */
2996         param = 1;
2997         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2998         wmt_params.flag = 0;
2999         wmt_params.dlen = sizeof(param);
3000         wmt_params.data = &param;
3001         wmt_params.status = NULL;
3002
3003         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3004         if (err < 0) {
3005                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3006                 return err;
3007         }
3008
3009 ignore_func_on:
3010         /* Apply the low power environment setup */
3011         tci_sleep.mode = 0x5;
3012         tci_sleep.duration = cpu_to_le16(0x640);
3013         tci_sleep.host_duration = cpu_to_le16(0x640);
3014         tci_sleep.host_wakeup_pin = 0;
3015         tci_sleep.time_compensation = 0;
3016
3017         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3018                              HCI_INIT_TIMEOUT);
3019         if (IS_ERR(skb)) {
3020                 err = PTR_ERR(skb);
3021                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3022                 return err;
3023         }
3024         kfree_skb(skb);
3025
3026 done:
3027         rettime = ktime_get();
3028         delta = ktime_sub(rettime, calltime);
3029         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3030
3031         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3032
3033         return 0;
3034 }
3035
3036 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3037 {
3038         struct btmtk_hci_wmt_params wmt_params;
3039         u8 param = 0;
3040         int err;
3041
3042         /* Disable the device */
3043         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3044         wmt_params.flag = 0;
3045         wmt_params.dlen = sizeof(param);
3046         wmt_params.data = &param;
3047         wmt_params.status = NULL;
3048
3049         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3050         if (err < 0) {
3051                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3052                 return err;
3053         }
3054
3055         return 0;
3056 }
3057
3058 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3059 {
3060         struct btusb_data *data = hci_get_drvdata(hdev);
3061         u32 val;
3062         int err, retry = 0;
3063
3064         /* It's MediaTek specific bluetooth reset mechanism via USB */
3065         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3066                 bt_dev_err(hdev, "last reset failed? Not resetting again");
3067                 return;
3068         }
3069
3070         err = usb_autopm_get_interface(data->intf);
3071         if (err < 0)
3072                 return;
3073
3074         btusb_stop_traffic(data);
3075         usb_kill_anchored_urbs(&data->tx_anchor);
3076
3077         /* It's Device EndPoint Reset Option Register */
3078         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3079         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3080         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3081
3082         /* Reset the bluetooth chip via USB interface. */
3083         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3084         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3085         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3086         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3087         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3088         /* MT7921 need to delay 20ms between toggle reset bit */
3089         msleep(20);
3090         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3091         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3092
3093         /* Poll the register until reset is completed */
3094         do {
3095                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3096                 if (val & MTK_BT_RST_DONE) {
3097                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3098                         break;
3099                 }
3100
3101                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3102                 retry++;
3103                 msleep(MTK_BT_RESET_WAIT_MS);
3104         } while (retry < MTK_BT_RESET_NUM_TRIES);
3105
3106         btusb_mtk_id_get(data, 0x70010200, &val);
3107         if (!val)
3108                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3109
3110         usb_queue_reset_device(data->intf);
3111
3112         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3113 }
3114
3115 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3116 {
3117         struct btusb_data *data = hci_get_drvdata(hdev);
3118         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3119
3120         switch (handle) {
3121         case 0xfc6f:            /* Firmware dump from device */
3122                 /* When the firmware hangs, the device can no longer
3123                  * suspend and thus disable auto-suspend.
3124                  */
3125                 usb_disable_autosuspend(data->udev);
3126                 fallthrough;
3127         case 0x05ff:            /* Firmware debug logging 1 */
3128         case 0x05fe:            /* Firmware debug logging 2 */
3129                 return hci_recv_diag(hdev, skb);
3130         }
3131
3132         return hci_recv_frame(hdev, skb);
3133 }
3134
3135 #ifdef CONFIG_PM
3136 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3137 static int marvell_config_oob_wake(struct hci_dev *hdev)
3138 {
3139         struct sk_buff *skb;
3140         struct btusb_data *data = hci_get_drvdata(hdev);
3141         struct device *dev = &data->udev->dev;
3142         u16 pin, gap, opcode;
3143         int ret;
3144         u8 cmd[5];
3145
3146         /* Move on if no wakeup pin specified */
3147         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3148             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3149                 return 0;
3150
3151         /* Vendor specific command to configure a GPIO as wake-up pin */
3152         opcode = hci_opcode_pack(0x3F, 0x59);
3153         cmd[0] = opcode & 0xFF;
3154         cmd[1] = opcode >> 8;
3155         cmd[2] = 2; /* length of parameters that follow */
3156         cmd[3] = pin;
3157         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3158
3159         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3160         if (!skb) {
3161                 bt_dev_err(hdev, "%s: No memory", __func__);
3162                 return -ENOMEM;
3163         }
3164
3165         skb_put_data(skb, cmd, sizeof(cmd));
3166         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3167
3168         ret = btusb_send_frame(hdev, skb);
3169         if (ret) {
3170                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3171                 kfree_skb(skb);
3172                 return ret;
3173         }
3174
3175         return 0;
3176 }
3177 #endif
3178
3179 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3180                                     const bdaddr_t *bdaddr)
3181 {
3182         struct sk_buff *skb;
3183         u8 buf[8];
3184         long ret;
3185
3186         buf[0] = 0xfe;
3187         buf[1] = sizeof(bdaddr_t);
3188         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3189
3190         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3191         if (IS_ERR(skb)) {
3192                 ret = PTR_ERR(skb);
3193                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3194                            ret);
3195                 return ret;
3196         }
3197         kfree_skb(skb);
3198
3199         return 0;
3200 }
3201
3202 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3203                                     const bdaddr_t *bdaddr)
3204 {
3205         struct sk_buff *skb;
3206         u8 buf[10];
3207         long ret;
3208
3209         buf[0] = 0x01;
3210         buf[1] = 0x01;
3211         buf[2] = 0x00;
3212         buf[3] = sizeof(bdaddr_t);
3213         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3214
3215         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3216         if (IS_ERR(skb)) {
3217                 ret = PTR_ERR(skb);
3218                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3219                 return ret;
3220         }
3221         kfree_skb(skb);
3222
3223         return 0;
3224 }
3225
3226 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3227                                 const bdaddr_t *bdaddr)
3228 {
3229         struct sk_buff *skb;
3230         u8 buf[6];
3231         long ret;
3232
3233         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3234
3235         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3236                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3237         if (IS_ERR(skb)) {
3238                 ret = PTR_ERR(skb);
3239                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3240                 return ret;
3241         }
3242         kfree_skb(skb);
3243
3244         return 0;
3245 }
3246
3247 #define QCA_DFU_PACKET_LEN      4096
3248
3249 #define QCA_GET_TARGET_VERSION  0x09
3250 #define QCA_CHECK_STATUS        0x05
3251 #define QCA_DFU_DOWNLOAD        0x01
3252
3253 #define QCA_SYSCFG_UPDATED      0x40
3254 #define QCA_PATCH_UPDATED       0x80
3255 #define QCA_DFU_TIMEOUT         3000
3256 #define QCA_FLAG_MULTI_NVM      0x80
3257 #define QCA_BT_RESET_WAIT_MS    100
3258
3259 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3260 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3261
3262 struct qca_version {
3263         __le32  rom_version;
3264         __le32  patch_version;
3265         __le32  ram_version;
3266         __u8    chip_id;
3267         __u8    platform_id;
3268         __le16  flag;
3269         __u8    reserved[4];
3270 } __packed;
3271
3272 struct qca_rampatch_version {
3273         __le16  rom_version_high;
3274         __le16  rom_version_low;
3275         __le16  patch_version;
3276 } __packed;
3277
3278 struct qca_device_info {
3279         u32     rom_version;
3280         u8      rampatch_hdr;   /* length of header in rampatch */
3281         u8      nvm_hdr;        /* length of header in NVM */
3282         u8      ver_offset;     /* offset of version structure in rampatch */
3283 };
3284
3285 static const struct qca_device_info qca_devices_table[] = {
3286         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3287         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3288         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3289         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3290         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3291         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3292         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3293         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3294         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3295         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3296 };
3297
3298 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3299                                      void *data, u16 size)
3300 {
3301         int pipe, err;
3302         u8 *buf;
3303
3304         buf = kmalloc(size, GFP_KERNEL);
3305         if (!buf)
3306                 return -ENOMEM;
3307
3308         /* Found some of USB hosts have IOT issues with ours so that we should
3309          * not wait until HCI layer is ready.
3310          */
3311         pipe = usb_rcvctrlpipe(udev, 0);
3312         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3313                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3314         if (err < 0) {
3315                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3316                 goto done;
3317         }
3318
3319         memcpy(data, buf, size);
3320
3321 done:
3322         kfree(buf);
3323
3324         return err;
3325 }
3326
3327 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3328                                        const struct firmware *firmware,
3329                                        size_t hdr_size)
3330 {
3331         struct btusb_data *btdata = hci_get_drvdata(hdev);
3332         struct usb_device *udev = btdata->udev;
3333         size_t count, size, sent = 0;
3334         int pipe, len, err;
3335         u8 *buf;
3336
3337         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3338         if (!buf)
3339                 return -ENOMEM;
3340
3341         count = firmware->size;
3342
3343         size = min_t(size_t, count, hdr_size);
3344         memcpy(buf, firmware->data, size);
3345
3346         /* USB patches should go down to controller through USB path
3347          * because binary format fits to go down through USB channel.
3348          * USB control path is for patching headers and USB bulk is for
3349          * patch body.
3350          */
3351         pipe = usb_sndctrlpipe(udev, 0);
3352         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3353                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3354         if (err < 0) {
3355                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3356                 goto done;
3357         }
3358
3359         sent += size;
3360         count -= size;
3361
3362         /* ep2 need time to switch from function acl to function dfu,
3363          * so we add 20ms delay here.
3364          */
3365         msleep(20);
3366
3367         while (count) {
3368                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3369
3370                 memcpy(buf, firmware->data + sent, size);
3371
3372                 pipe = usb_sndbulkpipe(udev, 0x02);
3373                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3374                                    QCA_DFU_TIMEOUT);
3375                 if (err < 0) {
3376                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3377                                    sent, firmware->size, err);
3378                         break;
3379                 }
3380
3381                 if (size != len) {
3382                         bt_dev_err(hdev, "Failed to get bulk buffer");
3383                         err = -EILSEQ;
3384                         break;
3385                 }
3386
3387                 sent  += size;
3388                 count -= size;
3389         }
3390
3391 done:
3392         kfree(buf);
3393         return err;
3394 }
3395
3396 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3397                                          struct qca_version *ver,
3398                                          const struct qca_device_info *info)
3399 {
3400         struct qca_rampatch_version *rver;
3401         const struct firmware *fw;
3402         u32 ver_rom, ver_patch, rver_rom;
3403         u16 rver_rom_low, rver_rom_high, rver_patch;
3404         char fwname[64];
3405         int err;
3406
3407         ver_rom = le32_to_cpu(ver->rom_version);
3408         ver_patch = le32_to_cpu(ver->patch_version);
3409
3410         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3411
3412         err = request_firmware(&fw, fwname, &hdev->dev);
3413         if (err) {
3414                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3415                            fwname, err);
3416                 return err;
3417         }
3418
3419         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3420
3421         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3422         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3423         rver_patch = le16_to_cpu(rver->patch_version);
3424
3425         if (ver_rom & ~0xffffU) {
3426                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3427                 rver_rom = rver_rom_high << 16 | rver_rom_low;
3428         } else {
3429                 rver_rom = rver_rom_low;
3430         }
3431
3432         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3433                     "firmware rome 0x%x build 0x%x",
3434                     rver_rom, rver_patch, ver_rom, ver_patch);
3435
3436         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3437                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3438                 err = -EINVAL;
3439                 goto done;
3440         }
3441
3442         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3443
3444 done:
3445         release_firmware(fw);
3446
3447         return err;
3448 }
3449
3450 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3451                                         const struct qca_version *ver)
3452 {
3453         u32 rom_version = le32_to_cpu(ver->rom_version);
3454         u16 flag = le16_to_cpu(ver->flag);
3455
3456         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3457                 /* The board_id should be split into two bytes
3458                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3459                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3460                  * we have several platforms, and platform IDs are continuously added
3461                  * Platform ID:
3462                  * 0x00 is for Mobile
3463                  * 0x01 is for X86
3464                  * 0x02 is for Automotive
3465                  * 0x03 is for Consumer electronic
3466                  */
3467                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3468                 const char *variant;
3469
3470                 switch (le32_to_cpu(ver->ram_version)) {
3471                 case WCN6855_2_0_RAM_VERSION_GF:
3472                 case WCN6855_2_1_RAM_VERSION_GF:
3473                         variant = "_gf";
3474                         break;
3475                 default:
3476                         variant = "";
3477                         break;
3478                 }
3479
3480                 if (board_id == 0) {
3481                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3482                                 rom_version, variant);
3483                 } else {
3484                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3485                                 rom_version, variant, board_id);
3486                 }
3487         } else {
3488                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3489                         rom_version);
3490         }
3491
3492 }
3493
3494 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3495                                     struct qca_version *ver,
3496                                     const struct qca_device_info *info)
3497 {
3498         const struct firmware *fw;
3499         char fwname[64];
3500         int err;
3501
3502         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3503
3504         err = request_firmware(&fw, fwname, &hdev->dev);
3505         if (err) {
3506                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3507                            fwname, err);
3508                 return err;
3509         }
3510
3511         bt_dev_info(hdev, "using NVM file: %s", fwname);
3512
3513         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3514
3515         release_firmware(fw);
3516
3517         return err;
3518 }
3519
3520 /* identify the ROM version and check whether patches are needed */
3521 static bool btusb_qca_need_patch(struct usb_device *udev)
3522 {
3523         struct qca_version ver;
3524
3525         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3526                                       sizeof(ver)) < 0)
3527                 return false;
3528         /* only low ROM versions need patches */
3529         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3530 }
3531
3532 static int btusb_setup_qca(struct hci_dev *hdev)
3533 {
3534         struct btusb_data *btdata = hci_get_drvdata(hdev);
3535         struct usb_device *udev = btdata->udev;
3536         const struct qca_device_info *info = NULL;
3537         struct qca_version ver;
3538         u32 ver_rom;
3539         u8 status;
3540         int i, err;
3541
3542         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3543                                         sizeof(ver));
3544         if (err < 0)
3545                 return err;
3546
3547         ver_rom = le32_to_cpu(ver.rom_version);
3548
3549         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3550                 if (ver_rom == qca_devices_table[i].rom_version)
3551                         info = &qca_devices_table[i];
3552         }
3553         if (!info) {
3554                 /* If the rom_version is not matched in the qca_devices_table
3555                  * and the high ROM version is not zero, we assume this chip no
3556                  * need to load the rampatch and nvm.
3557                  */
3558                 if (ver_rom & ~0xffffU)
3559                         return 0;
3560
3561                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3562                 return -ENODEV;
3563         }
3564
3565         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3566                                         sizeof(status));
3567         if (err < 0)
3568                 return err;
3569
3570         if (!(status & QCA_PATCH_UPDATED)) {
3571                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3572                 if (err < 0)
3573                         return err;
3574         }
3575
3576         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3577                                         sizeof(ver));
3578         if (err < 0)
3579                 return err;
3580
3581         if (!(status & QCA_SYSCFG_UPDATED)) {
3582                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3583                 if (err < 0)
3584                         return err;
3585
3586                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3587                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3588                  * cause potential enable failure.
3589                  */
3590                 if (info->rom_version >= 0x00130201)
3591                         msleep(QCA_BT_RESET_WAIT_MS);
3592         }
3593
3594         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3595          * work with the likes of HSP/HFP mSBC.
3596          */
3597         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3598
3599         return 0;
3600 }
3601
3602 static inline int __set_diag_interface(struct hci_dev *hdev)
3603 {
3604         struct btusb_data *data = hci_get_drvdata(hdev);
3605         struct usb_interface *intf = data->diag;
3606         int i;
3607
3608         if (!data->diag)
3609                 return -ENODEV;
3610
3611         data->diag_tx_ep = NULL;
3612         data->diag_rx_ep = NULL;
3613
3614         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3615                 struct usb_endpoint_descriptor *ep_desc;
3616
3617                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3618
3619                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3620                         data->diag_tx_ep = ep_desc;
3621                         continue;
3622                 }
3623
3624                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3625                         data->diag_rx_ep = ep_desc;
3626                         continue;
3627                 }
3628         }
3629
3630         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3631                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3632                 return -ENODEV;
3633         }
3634
3635         return 0;
3636 }
3637
3638 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3639 {
3640         struct btusb_data *data = hci_get_drvdata(hdev);
3641         struct sk_buff *skb;
3642         struct urb *urb;
3643         unsigned int pipe;
3644
3645         if (!data->diag_tx_ep)
3646                 return ERR_PTR(-ENODEV);
3647
3648         urb = usb_alloc_urb(0, GFP_KERNEL);
3649         if (!urb)
3650                 return ERR_PTR(-ENOMEM);
3651
3652         skb = bt_skb_alloc(2, GFP_KERNEL);
3653         if (!skb) {
3654                 usb_free_urb(urb);
3655                 return ERR_PTR(-ENOMEM);
3656         }
3657
3658         skb_put_u8(skb, 0xf0);
3659         skb_put_u8(skb, enable);
3660
3661         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3662
3663         usb_fill_bulk_urb(urb, data->udev, pipe,
3664                           skb->data, skb->len, btusb_tx_complete, skb);
3665
3666         skb->dev = (void *)hdev;
3667
3668         return urb;
3669 }
3670
3671 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3672 {
3673         struct btusb_data *data = hci_get_drvdata(hdev);
3674         struct urb *urb;
3675
3676         if (!data->diag)
3677                 return -ENODEV;
3678
3679         if (!test_bit(HCI_RUNNING, &hdev->flags))
3680                 return -ENETDOWN;
3681
3682         urb = alloc_diag_urb(hdev, enable);
3683         if (IS_ERR(urb))
3684                 return PTR_ERR(urb);
3685
3686         return submit_or_queue_tx_urb(hdev, urb);
3687 }
3688
3689 #ifdef CONFIG_PM
3690 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3691 {
3692         struct btusb_data *data = priv;
3693
3694         pm_wakeup_event(&data->udev->dev, 0);
3695         pm_system_wakeup();
3696
3697         /* Disable only if not already disabled (keep it balanced) */
3698         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3699                 disable_irq_nosync(irq);
3700                 disable_irq_wake(irq);
3701         }
3702         return IRQ_HANDLED;
3703 }
3704
3705 static const struct of_device_id btusb_match_table[] = {
3706         { .compatible = "usb1286,204e" },
3707         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3708         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3709         { }
3710 };
3711 MODULE_DEVICE_TABLE(of, btusb_match_table);
3712
3713 /* Use an oob wakeup pin? */
3714 static int btusb_config_oob_wake(struct hci_dev *hdev)
3715 {
3716         struct btusb_data *data = hci_get_drvdata(hdev);
3717         struct device *dev = &data->udev->dev;
3718         int irq, ret;
3719
3720         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3721
3722         if (!of_match_device(btusb_match_table, dev))
3723                 return 0;
3724
3725         /* Move on if no IRQ specified */
3726         irq = of_irq_get_byname(dev->of_node, "wakeup");
3727         if (irq <= 0) {
3728                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3729                 return 0;
3730         }
3731
3732         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3733         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3734                                0, "OOB Wake-on-BT", data);
3735         if (ret) {
3736                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3737                 return ret;
3738         }
3739
3740         ret = device_init_wakeup(dev, true);
3741         if (ret) {
3742                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3743                 return ret;
3744         }
3745
3746         data->oob_wake_irq = irq;
3747         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3748         return 0;
3749 }
3750 #endif
3751
3752 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3753 {
3754         if (dmi_check_system(btusb_needs_reset_resume_table))
3755                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3756 }
3757
3758 static bool btusb_wakeup(struct hci_dev *hdev)
3759 {
3760         struct btusb_data *data = hci_get_drvdata(hdev);
3761
3762         return device_may_wakeup(&data->udev->dev);
3763 }
3764
3765 static int btusb_shutdown_qca(struct hci_dev *hdev)
3766 {
3767         struct sk_buff *skb;
3768
3769         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3770         if (IS_ERR(skb)) {
3771                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3772                 return PTR_ERR(skb);
3773         }
3774         kfree_skb(skb);
3775
3776         return 0;
3777 }
3778
3779 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3780                                     size_t count, loff_t *ppos)
3781 {
3782         struct btusb_data *data = file->private_data;
3783         char buf[3];
3784
3785         buf[0] = data->poll_sync ? 'Y' : 'N';
3786         buf[1] = '\n';
3787         buf[2] = '\0';
3788         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3789 }
3790
3791 static ssize_t force_poll_sync_write(struct file *file,
3792                                      const char __user *user_buf,
3793                                      size_t count, loff_t *ppos)
3794 {
3795         struct btusb_data *data = file->private_data;
3796         bool enable;
3797         int err;
3798
3799         err = kstrtobool_from_user(user_buf, count, &enable);
3800         if (err)
3801                 return err;
3802
3803         /* Only allow changes while the adapter is down */
3804         if (test_bit(HCI_UP, &data->hdev->flags))
3805                 return -EPERM;
3806
3807         if (data->poll_sync == enable)
3808                 return -EALREADY;
3809
3810         data->poll_sync = enable;
3811
3812         return count;
3813 }
3814
3815 static const struct file_operations force_poll_sync_fops = {
3816         .open           = simple_open,
3817         .read           = force_poll_sync_read,
3818         .write          = force_poll_sync_write,
3819         .llseek         = default_llseek,
3820 };
3821
3822 static int btusb_probe(struct usb_interface *intf,
3823                        const struct usb_device_id *id)
3824 {
3825         struct usb_endpoint_descriptor *ep_desc;
3826         struct gpio_desc *reset_gpio;
3827         struct btusb_data *data;
3828         struct hci_dev *hdev;
3829         unsigned ifnum_base;
3830         int i, err, priv_size;
3831
3832         BT_DBG("intf %p id %p", intf, id);
3833
3834         /* interface numbers are hardcoded in the spec */
3835         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3836                 if (!(id->driver_info & BTUSB_IFNUM_2))
3837                         return -ENODEV;
3838                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3839                         return -ENODEV;
3840         }
3841
3842         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3843
3844         if (!id->driver_info) {
3845                 const struct usb_device_id *match;
3846
3847                 match = usb_match_id(intf, blacklist_table);
3848                 if (match)
3849                         id = match;
3850         }
3851
3852         if (id->driver_info == BTUSB_IGNORE)
3853                 return -ENODEV;
3854
3855         if (id->driver_info & BTUSB_ATH3012) {
3856                 struct usb_device *udev = interface_to_usbdev(intf);
3857
3858                 /* Old firmware would otherwise let ath3k driver load
3859                  * patch and sysconfig files
3860                  */
3861                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3862                     !btusb_qca_need_patch(udev))
3863                         return -ENODEV;
3864         }
3865
3866         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3867         if (!data)
3868                 return -ENOMEM;
3869
3870         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3871                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3872
3873                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3874                         data->intr_ep = ep_desc;
3875                         continue;
3876                 }
3877
3878                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3879                         data->bulk_tx_ep = ep_desc;
3880                         continue;
3881                 }
3882
3883                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3884                         data->bulk_rx_ep = ep_desc;
3885                         continue;
3886                 }
3887         }
3888
3889         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3890                 return -ENODEV;
3891
3892         if (id->driver_info & BTUSB_AMP) {
3893                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3894                 data->cmdreq = 0x2b;
3895         } else {
3896                 data->cmdreq_type = USB_TYPE_CLASS;
3897                 data->cmdreq = 0x00;
3898         }
3899
3900         data->udev = interface_to_usbdev(intf);
3901         data->intf = intf;
3902
3903         INIT_WORK(&data->work, btusb_work);
3904         INIT_WORK(&data->waker, btusb_waker);
3905         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3906
3907         skb_queue_head_init(&data->acl_q);
3908
3909         init_usb_anchor(&data->deferred);
3910         init_usb_anchor(&data->tx_anchor);
3911         spin_lock_init(&data->txlock);
3912
3913         init_usb_anchor(&data->intr_anchor);
3914         init_usb_anchor(&data->bulk_anchor);
3915         init_usb_anchor(&data->isoc_anchor);
3916         init_usb_anchor(&data->diag_anchor);
3917         init_usb_anchor(&data->ctrl_anchor);
3918         spin_lock_init(&data->rxlock);
3919
3920         priv_size = 0;
3921
3922         data->recv_event = hci_recv_frame;
3923         data->recv_bulk = btusb_recv_bulk;
3924
3925         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3926                 /* Allocate extra space for Intel device */
3927                 priv_size += sizeof(struct btintel_data);
3928
3929                 /* Override the rx handlers */
3930                 data->recv_event = btusb_recv_event_intel;
3931                 data->recv_bulk = btusb_recv_bulk_intel;
3932         } else if (id->driver_info & BTUSB_REALTEK) {
3933                 /* Allocate extra space for Realtek device */
3934                 priv_size += sizeof(struct btrealtek_data);
3935         }
3936
3937         data->recv_acl = hci_recv_frame;
3938
3939         hdev = hci_alloc_dev_priv(priv_size);
3940         if (!hdev)
3941                 return -ENOMEM;
3942
3943         hdev->bus = HCI_USB;
3944         hci_set_drvdata(hdev, data);
3945
3946         if (id->driver_info & BTUSB_AMP)
3947                 hdev->dev_type = HCI_AMP;
3948         else
3949                 hdev->dev_type = HCI_PRIMARY;
3950
3951         data->hdev = hdev;
3952
3953         SET_HCIDEV_DEV(hdev, &intf->dev);
3954
3955         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3956                                         GPIOD_OUT_LOW);
3957         if (IS_ERR(reset_gpio)) {
3958                 err = PTR_ERR(reset_gpio);
3959                 goto out_free_dev;
3960         } else if (reset_gpio) {
3961                 data->reset_gpio = reset_gpio;
3962         }
3963
3964         hdev->open   = btusb_open;
3965         hdev->close  = btusb_close;
3966         hdev->flush  = btusb_flush;
3967         hdev->send   = btusb_send_frame;
3968         hdev->notify = btusb_notify;
3969         hdev->wakeup = btusb_wakeup;
3970
3971 #ifdef CONFIG_PM
3972         err = btusb_config_oob_wake(hdev);
3973         if (err)
3974                 goto out_free_dev;
3975
3976         /* Marvell devices may need a specific chip configuration */
3977         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3978                 err = marvell_config_oob_wake(hdev);
3979                 if (err)
3980                         goto out_free_dev;
3981         }
3982 #endif
3983         if (id->driver_info & BTUSB_CW6622)
3984                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3985
3986         if (id->driver_info & BTUSB_BCM2045)
3987                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3988
3989         if (id->driver_info & BTUSB_BCM92035)
3990                 hdev->setup = btusb_setup_bcm92035;
3991
3992         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3993             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3994                 hdev->manufacturer = 15;
3995                 hdev->setup = btbcm_setup_patchram;
3996                 hdev->set_diag = btusb_bcm_set_diag;
3997                 hdev->set_bdaddr = btbcm_set_bdaddr;
3998
3999                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4000                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4001         }
4002
4003         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4004             (id->driver_info & BTUSB_BCM_APPLE)) {
4005                 hdev->manufacturer = 15;
4006                 hdev->setup = btbcm_setup_apple;
4007                 hdev->set_diag = btusb_bcm_set_diag;
4008
4009                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4010                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4011         }
4012
4013         /* Combined Intel Device setup to support multiple setup routine */
4014         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4015                 err = btintel_configure_setup(hdev);
4016                 if (err)
4017                         goto out_free_dev;
4018
4019                 /* Transport specific configuration */
4020                 hdev->send = btusb_send_frame_intel;
4021                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4022
4023                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4024                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4025
4026                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4027                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4028
4029                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4030                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4031         }
4032
4033         if (id->driver_info & BTUSB_MARVELL)
4034                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4035
4036         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4037             (id->driver_info & BTUSB_MEDIATEK)) {
4038                 hdev->setup = btusb_mtk_setup;
4039                 hdev->shutdown = btusb_mtk_shutdown;
4040                 hdev->manufacturer = 70;
4041                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4042                 hdev->set_bdaddr = btmtk_set_bdaddr;
4043                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4044                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4045                 data->recv_acl = btusb_recv_acl_mtk;
4046         }
4047
4048         if (id->driver_info & BTUSB_SWAVE) {
4049                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4050                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4051         }
4052
4053         if (id->driver_info & BTUSB_INTEL_BOOT) {
4054                 hdev->manufacturer = 2;
4055                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4056         }
4057
4058         if (id->driver_info & BTUSB_ATH3012) {
4059                 data->setup_on_usb = btusb_setup_qca;
4060                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4061                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4062                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4063         }
4064
4065         if (id->driver_info & BTUSB_QCA_ROME) {
4066                 data->setup_on_usb = btusb_setup_qca;
4067                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4068                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4069                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4070                 btusb_check_needs_reset_resume(intf);
4071         }
4072
4073         if (id->driver_info & BTUSB_QCA_WCN6855) {
4074                 data->setup_on_usb = btusb_setup_qca;
4075                 hdev->shutdown = btusb_shutdown_qca;
4076                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4077                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4078                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4079                 hci_set_msft_opcode(hdev, 0xFD70);
4080         }
4081
4082         if (id->driver_info & BTUSB_AMP) {
4083                 /* AMP controllers do not support SCO packets */
4084                 data->isoc = NULL;
4085         } else {
4086                 /* Interface orders are hardcoded in the specification */
4087                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4088                 data->isoc_ifnum = ifnum_base + 1;
4089         }
4090
4091         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4092             (id->driver_info & BTUSB_REALTEK)) {
4093                 hdev->setup = btusb_setup_realtek;
4094                 hdev->shutdown = btrtl_shutdown_realtek;
4095                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4096
4097                 /* Realtek devices need to set remote wakeup on auto-suspend */
4098                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4099                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4100         }
4101
4102         if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4103                 /* Support is advertised, but not implemented */
4104                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4105         }
4106
4107         if (!reset)
4108                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4109
4110         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4111                 if (!disable_scofix)
4112                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4113         }
4114
4115         if (id->driver_info & BTUSB_BROKEN_ISOC)
4116                 data->isoc = NULL;
4117
4118         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4119                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4120
4121         if (id->driver_info & BTUSB_VALID_LE_STATES)
4122                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4123
4124         if (id->driver_info & BTUSB_DIGIANSWER) {
4125                 data->cmdreq_type = USB_TYPE_VENDOR;
4126                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4127         }
4128
4129         if (id->driver_info & BTUSB_CSR) {
4130                 struct usb_device *udev = data->udev;
4131                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4132
4133                 /* Old firmware would otherwise execute USB reset */
4134                 if (bcdDevice < 0x117)
4135                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4136
4137                 /* This must be set first in case we disable it for fakes */
4138                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4139
4140                 /* Fake CSR devices with broken commands */
4141                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4142                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4143                         hdev->setup = btusb_setup_csr;
4144         }
4145
4146         if (id->driver_info & BTUSB_SNIFFER) {
4147                 struct usb_device *udev = data->udev;
4148
4149                 /* New sniffer firmware has crippled HCI interface */
4150                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4151                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4152         }
4153
4154         if (id->driver_info & BTUSB_INTEL_BOOT) {
4155                 /* A bug in the bootloader causes that interrupt interface is
4156                  * only enabled after receiving SetInterface(0, AltSetting=0).
4157                  */
4158                 err = usb_set_interface(data->udev, 0, 0);
4159                 if (err < 0) {
4160                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4161                         goto out_free_dev;
4162                 }
4163         }
4164
4165         if (data->isoc) {
4166                 err = usb_driver_claim_interface(&btusb_driver,
4167                                                  data->isoc, data);
4168                 if (err < 0)
4169                         goto out_free_dev;
4170         }
4171
4172         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4173                 if (!usb_driver_claim_interface(&btusb_driver,
4174                                                 data->diag, data))
4175                         __set_diag_interface(hdev);
4176                 else
4177                         data->diag = NULL;
4178         }
4179
4180         if (enable_autosuspend)
4181                 usb_enable_autosuspend(data->udev);
4182
4183         data->poll_sync = enable_poll_sync;
4184
4185         err = hci_register_dev(hdev);
4186         if (err < 0)
4187                 goto out_free_dev;
4188
4189         usb_set_intfdata(intf, data);
4190
4191         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4192                             &force_poll_sync_fops);
4193
4194         return 0;
4195
4196 out_free_dev:
4197         if (data->reset_gpio)
4198                 gpiod_put(data->reset_gpio);
4199         hci_free_dev(hdev);
4200         return err;
4201 }
4202
4203 static void btusb_disconnect(struct usb_interface *intf)
4204 {
4205         struct btusb_data *data = usb_get_intfdata(intf);
4206         struct hci_dev *hdev;
4207
4208         BT_DBG("intf %p", intf);
4209
4210         if (!data)
4211                 return;
4212
4213         hdev = data->hdev;
4214         usb_set_intfdata(data->intf, NULL);
4215
4216         if (data->isoc)
4217                 usb_set_intfdata(data->isoc, NULL);
4218
4219         if (data->diag)
4220                 usb_set_intfdata(data->diag, NULL);
4221
4222         hci_unregister_dev(hdev);
4223
4224         if (intf == data->intf) {
4225                 if (data->isoc)
4226                         usb_driver_release_interface(&btusb_driver, data->isoc);
4227                 if (data->diag)
4228                         usb_driver_release_interface(&btusb_driver, data->diag);
4229         } else if (intf == data->isoc) {
4230                 if (data->diag)
4231                         usb_driver_release_interface(&btusb_driver, data->diag);
4232                 usb_driver_release_interface(&btusb_driver, data->intf);
4233         } else if (intf == data->diag) {
4234                 usb_driver_release_interface(&btusb_driver, data->intf);
4235                 if (data->isoc)
4236                         usb_driver_release_interface(&btusb_driver, data->isoc);
4237         }
4238
4239         if (data->oob_wake_irq)
4240                 device_init_wakeup(&data->udev->dev, false);
4241
4242         if (data->reset_gpio)
4243                 gpiod_put(data->reset_gpio);
4244
4245         hci_free_dev(hdev);
4246 }
4247
4248 #ifdef CONFIG_PM
4249 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4250 {
4251         struct btusb_data *data = usb_get_intfdata(intf);
4252
4253         BT_DBG("intf %p", intf);
4254
4255         if (data->suspend_count++)
4256                 return 0;
4257
4258         spin_lock_irq(&data->txlock);
4259         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4260                 set_bit(BTUSB_SUSPENDING, &data->flags);
4261                 spin_unlock_irq(&data->txlock);
4262         } else {
4263                 spin_unlock_irq(&data->txlock);
4264                 data->suspend_count--;
4265                 return -EBUSY;
4266         }
4267
4268         cancel_work_sync(&data->work);
4269
4270         btusb_stop_traffic(data);
4271         usb_kill_anchored_urbs(&data->tx_anchor);
4272
4273         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4274                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4275                 enable_irq_wake(data->oob_wake_irq);
4276                 enable_irq(data->oob_wake_irq);
4277         }
4278
4279         /* For global suspend, Realtek devices lose the loaded fw
4280          * in them. But for autosuspend, firmware should remain.
4281          * Actually, it depends on whether the usb host sends
4282          * set feature (enable wakeup) or not.
4283          */
4284         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4285                 if (PMSG_IS_AUTO(message) &&
4286                     device_can_wakeup(&data->udev->dev))
4287                         data->udev->do_remote_wakeup = 1;
4288                 else if (!PMSG_IS_AUTO(message) &&
4289                          !device_may_wakeup(&data->udev->dev)) {
4290                         data->udev->do_remote_wakeup = 0;
4291                         data->udev->reset_resume = 1;
4292                 }
4293         }
4294
4295         return 0;
4296 }
4297
4298 static void play_deferred(struct btusb_data *data)
4299 {
4300         struct urb *urb;
4301         int err;
4302
4303         while ((urb = usb_get_from_anchor(&data->deferred))) {
4304                 usb_anchor_urb(urb, &data->tx_anchor);
4305
4306                 err = usb_submit_urb(urb, GFP_ATOMIC);
4307                 if (err < 0) {
4308                         if (err != -EPERM && err != -ENODEV)
4309                                 BT_ERR("%s urb %p submission failed (%d)",
4310                                        data->hdev->name, urb, -err);
4311                         kfree(urb->setup_packet);
4312                         usb_unanchor_urb(urb);
4313                         usb_free_urb(urb);
4314                         break;
4315                 }
4316
4317                 data->tx_in_flight++;
4318                 usb_free_urb(urb);
4319         }
4320
4321         /* Cleanup the rest deferred urbs. */
4322         while ((urb = usb_get_from_anchor(&data->deferred))) {
4323                 kfree(urb->setup_packet);
4324                 usb_free_urb(urb);
4325         }
4326 }
4327
4328 static int btusb_resume(struct usb_interface *intf)
4329 {
4330         struct btusb_data *data = usb_get_intfdata(intf);
4331         struct hci_dev *hdev = data->hdev;
4332         int err = 0;
4333
4334         BT_DBG("intf %p", intf);
4335
4336         if (--data->suspend_count)
4337                 return 0;
4338
4339         /* Disable only if not already disabled (keep it balanced) */
4340         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4341                 disable_irq(data->oob_wake_irq);
4342                 disable_irq_wake(data->oob_wake_irq);
4343         }
4344
4345         if (!test_bit(HCI_RUNNING, &hdev->flags))
4346                 goto done;
4347
4348         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4349                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4350                 if (err < 0) {
4351                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4352                         goto failed;
4353                 }
4354         }
4355
4356         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4357                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4358                 if (err < 0) {
4359                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4360                         goto failed;
4361                 }
4362
4363                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4364         }
4365
4366         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4367                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4368                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4369                 else
4370                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4371         }
4372
4373         spin_lock_irq(&data->txlock);
4374         play_deferred(data);
4375         clear_bit(BTUSB_SUSPENDING, &data->flags);
4376         spin_unlock_irq(&data->txlock);
4377         schedule_work(&data->work);
4378
4379         return 0;
4380
4381 failed:
4382         usb_scuttle_anchored_urbs(&data->deferred);
4383 done:
4384         spin_lock_irq(&data->txlock);
4385         clear_bit(BTUSB_SUSPENDING, &data->flags);
4386         spin_unlock_irq(&data->txlock);
4387
4388         return err;
4389 }
4390 #endif
4391
4392 static struct usb_driver btusb_driver = {
4393         .name           = "btusb",
4394         .probe          = btusb_probe,
4395         .disconnect     = btusb_disconnect,
4396 #ifdef CONFIG_PM
4397         .suspend        = btusb_suspend,
4398         .resume         = btusb_resume,
4399 #endif
4400         .id_table       = btusb_table,
4401         .supports_autosuspend = 1,
4402         .disable_hub_initiated_lpm = 1,
4403 };
4404
4405 module_usb_driver(btusb_driver);
4406
4407 module_param(disable_scofix, bool, 0644);
4408 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4409
4410 module_param(force_scofix, bool, 0644);
4411 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4412
4413 module_param(enable_autosuspend, bool, 0644);
4414 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4415
4416 module_param(reset, bool, 0644);
4417 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4418
4419 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4420 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4421 MODULE_VERSION(VERSION);
4422 MODULE_LICENSE("GPL");