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         { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
 544                                                      BTUSB_WIDEBAND_SPEECH },
 545         { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
 546                                                      BTUSB_WIDEBAND_SPEECH },
 547
 548         /* Realtek Bluetooth devices */
 549         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 550           .driver_info = BTUSB_REALTEK },
 551
 552         /* MediaTek Bluetooth devices */
 553         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 554           .driver_info = BTUSB_MEDIATEK |
 555                          BTUSB_WIDEBAND_SPEECH |
 556                          BTUSB_VALID_LE_STATES },
 557
 558         /* Additional MediaTek MT7615E Bluetooth devices */
 559         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 560
 561         /* Additional MediaTek MT7663 Bluetooth devices */
 562         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 563                                                      BTUSB_WIDEBAND_SPEECH |
 564                                                      BTUSB_VALID_LE_STATES },
 565         { USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK |
 566                                                      BTUSB_WIDEBAND_SPEECH |
 567                                                      BTUSB_VALID_LE_STATES },
 568
 569         /* Additional MediaTek MT7668 Bluetooth devices */
 570         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 571                                                      BTUSB_WIDEBAND_SPEECH |
 572                                                      BTUSB_VALID_LE_STATES },
 573
 574         /* Additional MediaTek MT7921 Bluetooth devices */
 575         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 576                                                      BTUSB_WIDEBAND_SPEECH |
 577                                                      BTUSB_VALID_LE_STATES },
 578         { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
 579                                                      BTUSB_WIDEBAND_SPEECH |
 580                                                      BTUSB_VALID_LE_STATES },
 581         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 582                                                      BTUSB_WIDEBAND_SPEECH |
 583                                                      BTUSB_VALID_LE_STATES },
 584         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 585                                                      BTUSB_WIDEBAND_SPEECH |
 586                                                      BTUSB_VALID_LE_STATES },
 587         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 588                                                      BTUSB_WIDEBAND_SPEECH |
 589                                                      BTUSB_VALID_LE_STATES },
 590         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 591                                                      BTUSB_WIDEBAND_SPEECH |
 592                                                      BTUSB_VALID_LE_STATES },
 593         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 594                                                      BTUSB_WIDEBAND_SPEECH |
 595                                                      BTUSB_VALID_LE_STATES },
 596         { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
 597                                                      BTUSB_WIDEBAND_SPEECH |
 598                                                      BTUSB_VALID_LE_STATES },
 599         { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
 600                                                      BTUSB_WIDEBAND_SPEECH |
 601                                                      BTUSB_VALID_LE_STATES },
 602         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 603                                                      BTUSB_WIDEBAND_SPEECH |
 604                                                      BTUSB_VALID_LE_STATES },
 605         { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
 606                                                      BTUSB_WIDEBAND_SPEECH |
 607                                                      BTUSB_VALID_LE_STATES },
 608
 609         /* MediaTek MT7922A Bluetooth devices */
 610         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 611                                                      BTUSB_WIDEBAND_SPEECH |
 612                                                      BTUSB_VALID_LE_STATES },
 613         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 614                                                      BTUSB_WIDEBAND_SPEECH |
 615                                                      BTUSB_VALID_LE_STATES },
 616         { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
 617                                                      BTUSB_WIDEBAND_SPEECH |
 618                                                      BTUSB_VALID_LE_STATES },
 619         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 620                                                      BTUSB_WIDEBAND_SPEECH |
 621                                                      BTUSB_VALID_LE_STATES },
 622         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 623                                                      BTUSB_WIDEBAND_SPEECH |
 624                                                      BTUSB_VALID_LE_STATES },
 625         { USB_DEVICE(0x0489, 0xe0e4), .driver_info = BTUSB_MEDIATEK |
 626                                                      BTUSB_WIDEBAND_SPEECH |
 627                                                      BTUSB_VALID_LE_STATES },
 628         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 629                                                      BTUSB_WIDEBAND_SPEECH |
 630                                                      BTUSB_VALID_LE_STATES },
 631
 632         /* Additional Realtek 8723AE Bluetooth devices */
 633         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 634         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 635
 636         /* Additional Realtek 8723BE Bluetooth devices */
 637         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 638         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 639         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 640         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 641         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 642         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 643         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 644
 645         /* Additional Realtek 8723BU Bluetooth devices */
 646         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 647
 648         /* Additional Realtek 8723DE Bluetooth devices */
 649         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 650         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 651
 652         /* Additional Realtek 8761BUV Bluetooth devices */
 653         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 654                                                      BTUSB_WIDEBAND_SPEECH },
 655         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 656                                                      BTUSB_WIDEBAND_SPEECH },
 657         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 658                                                      BTUSB_WIDEBAND_SPEECH },
 659         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 660                                                      BTUSB_WIDEBAND_SPEECH },
 661         { USB_DEVICE(0x6655, 0x8771), .driver_info = BTUSB_REALTEK |
 662                                                      BTUSB_WIDEBAND_SPEECH },
 663         { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
 664                                                      BTUSB_WIDEBAND_SPEECH },
 665         { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 666                                                      BTUSB_WIDEBAND_SPEECH },
 667
 668         /* Additional Realtek 8821AE Bluetooth devices */
 669         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 670         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 671         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 672         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 673         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 674
 675         /* Additional Realtek 8822BE Bluetooth devices */
 676         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 677         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 678
 679         /* Additional Realtek 8822CE Bluetooth devices */
 680         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 681                                                      BTUSB_WIDEBAND_SPEECH },
 682         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 683                                                      BTUSB_WIDEBAND_SPEECH },
 684         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 685                                                      BTUSB_WIDEBAND_SPEECH },
 686         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 687                                                      BTUSB_WIDEBAND_SPEECH },
 688         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 689                                                      BTUSB_WIDEBAND_SPEECH },
 690         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 691                                                      BTUSB_WIDEBAND_SPEECH },
 692         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 693                                                      BTUSB_WIDEBAND_SPEECH },
 694         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 695                                                      BTUSB_WIDEBAND_SPEECH },
 696         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 697                                                      BTUSB_WIDEBAND_SPEECH },
 698         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 699                                                      BTUSB_WIDEBAND_SPEECH },
 700         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 701                                                      BTUSB_WIDEBAND_SPEECH },
 702
 703         /* Actions Semiconductor ATS2851 based devices */
 704         { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
 705
 706         /* Silicon Wave based devices */
 707         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 708
 709         { }     /* Terminating entry */
 710 };
 711
 712 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 713  * this is a problem with the platform (likely shutting off all power) not with
 714  * the module itself. So we use a DMI list to match known broken platforms.
 715  */
 716 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 717         {
 718                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 719                 .matches = {
 720                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 721                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 722                 },
 723         },
 724         {
 725                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 726                 .matches = {
 727                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 728                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 729                 },
 730         },
 731         {
 732                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 733                 .matches = {
 734                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 735                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 736                 },
 737         },
 738         {}
 739 };
 740
 741 struct qca_dump_info {
 742         /* fields for dump collection */
 743         u16 id_vendor;
 744         u16 id_product;
 745         u32 fw_version;
 746         u32 controller_id;
 747         u32 ram_dump_size;
 748         u16 ram_dump_seqno;
 749 };
 750
 751 #define BTUSB_MAX_ISOC_FRAMES   10
 752
 753 #define BTUSB_INTR_RUNNING      0
 754 #define BTUSB_BULK_RUNNING      1
 755 #define BTUSB_ISOC_RUNNING      2
 756 #define BTUSB_SUSPENDING        3
 757 #define BTUSB_DID_ISO_RESUME    4
 758 #define BTUSB_BOOTLOADER        5
 759 #define BTUSB_DOWNLOADING       6
 760 #define BTUSB_FIRMWARE_LOADED   7
 761 #define BTUSB_FIRMWARE_FAILED   8
 762 #define BTUSB_BOOTING           9
 763 #define BTUSB_DIAG_RUNNING      10
 764 #define BTUSB_OOB_WAKE_ENABLED  11
 765 #define BTUSB_HW_RESET_ACTIVE   12
 766 #define BTUSB_TX_WAIT_VND_EVT   13
 767 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 768 #define BTUSB_USE_ALT3_FOR_WBS  15
 769 #define BTUSB_ALT6_CONTINUOUS_TX        16
 770 #define BTUSB_HW_SSR_ACTIVE     17
 771
 772 struct btusb_data {
 773         struct hci_dev       *hdev;
 774         struct usb_device    *udev;
 775         struct usb_interface *intf;
 776         struct usb_interface *isoc;
 777         struct usb_interface *diag;
 778         unsigned isoc_ifnum;
 779
 780         unsigned long flags;
 781
 782         bool poll_sync;
 783         int intr_interval;
 784         struct work_struct  work;
 785         struct work_struct  waker;
 786         struct delayed_work rx_work;
 787
 788         struct sk_buff_head acl_q;
 789
 790         struct usb_anchor deferred;
 791         struct usb_anchor tx_anchor;
 792         int tx_in_flight;
 793         spinlock_t txlock;
 794
 795         struct usb_anchor intr_anchor;
 796         struct usb_anchor bulk_anchor;
 797         struct usb_anchor isoc_anchor;
 798         struct usb_anchor diag_anchor;
 799         struct usb_anchor ctrl_anchor;
 800         spinlock_t rxlock;
 801
 802         struct sk_buff *evt_skb;
 803         struct sk_buff *acl_skb;
 804         struct sk_buff *sco_skb;
 805
 806         struct usb_endpoint_descriptor *intr_ep;
 807         struct usb_endpoint_descriptor *bulk_tx_ep;
 808         struct usb_endpoint_descriptor *bulk_rx_ep;
 809         struct usb_endpoint_descriptor *isoc_tx_ep;
 810         struct usb_endpoint_descriptor *isoc_rx_ep;
 811         struct usb_endpoint_descriptor *diag_tx_ep;
 812         struct usb_endpoint_descriptor *diag_rx_ep;
 813
 814         struct gpio_desc *reset_gpio;
 815
 816         __u8 cmdreq_type;
 817         __u8 cmdreq;
 818
 819         unsigned int sco_num;
 820         unsigned int air_mode;
 821         bool usb_alt6_packet_flow;
 822         int isoc_altsetting;
 823         int suspend_count;
 824
 825         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 826         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 827         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 828
 829         int (*setup_on_usb)(struct hci_dev *hdev);
 830
 831         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 832         unsigned cmd_timeout_cnt;
 833
 834         struct qca_dump_info qca_dump;
 835 };
 836
 837 static void btusb_reset(struct hci_dev *hdev)
 838 {
 839         struct btusb_data *data;
 840         int err;
 841
 842         if (hdev->reset) {
 843                 hdev->reset(hdev);
 844                 return;
 845         }
 846
 847         data = hci_get_drvdata(hdev);
 848         /* This is not an unbalanced PM reference since the device will reset */
 849         err = usb_autopm_get_interface(data->intf);
 850         if (err) {
 851                 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
 852                 return;
 853         }
 854
 855         bt_dev_err(hdev, "Resetting usb device.");
 856         usb_queue_reset_device(data->intf);
 857 }
 858
 859 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 860 {
 861         struct btusb_data *data = hci_get_drvdata(hdev);
 862         struct gpio_desc *reset_gpio = data->reset_gpio;
 863
 864         if (++data->cmd_timeout_cnt < 5)
 865                 return;
 866
 867         if (!reset_gpio) {
 868                 btusb_reset(hdev);
 869                 return;
 870         }
 871
 872         /*
 873          * Toggle the hard reset line if the platform provides one. The reset
 874          * is going to yank the device off the USB and then replug. So doing
 875          * once is enough. The cleanup is handled correctly on the way out
 876          * (standard USB disconnect), and the new device is detected cleanly
 877          * and bound to the driver again like it should be.
 878          */
 879         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 880                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 881                 return;
 882         }
 883
 884         bt_dev_err(hdev, "Initiating HW reset via gpio");
 885         gpiod_set_value_cansleep(reset_gpio, 1);
 886         msleep(100);
 887         gpiod_set_value_cansleep(reset_gpio, 0);
 888 }
 889
 890 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 891 {
 892         struct btusb_data *data = hci_get_drvdata(hdev);
 893         struct gpio_desc *reset_gpio = data->reset_gpio;
 894
 895         if (++data->cmd_timeout_cnt < 5)
 896                 return;
 897
 898         if (!reset_gpio) {
 899                 btusb_reset(hdev);
 900                 return;
 901         }
 902
 903         /* Toggle the hard reset line. The Realtek 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         bt_dev_err(hdev, "Reset Realtek device via gpio");
 915         gpiod_set_value_cansleep(reset_gpio, 1);
 916         msleep(200);
 917         gpiod_set_value_cansleep(reset_gpio, 0);
 918 }
 919
 920 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 921 {
 922         struct btusb_data *data = hci_get_drvdata(hdev);
 923         struct gpio_desc *reset_gpio = data->reset_gpio;
 924
 925         if (test_bit(BTUSB_HW_SSR_ACTIVE, &data->flags)) {
 926                 bt_dev_info(hdev, "Ramdump in progress, defer cmd_timeout");
 927                 return;
 928         }
 929
 930         if (++data->cmd_timeout_cnt < 5)
 931                 return;
 932
 933         if (reset_gpio) {
 934                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
 935
 936                 /* Toggle the hard reset line. The qca bt device is going to
 937                  * yank itself off the USB and then replug. The cleanup is handled
 938                  * correctly on the way out (standard USB disconnect), and the new
 939                  * device is detected cleanly and bound to the driver again like
 940                  * it should be.
 941                  */
 942                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 943                         bt_dev_err(hdev, "last reset failed? Not resetting again");
 944                         return;
 945                 }
 946
 947                 gpiod_set_value_cansleep(reset_gpio, 0);
 948                 msleep(200);
 949                 gpiod_set_value_cansleep(reset_gpio, 1);
 950
 951                 return;
 952         }
 953
 954         btusb_reset(hdev);
 955 }
 956
 957 static inline void btusb_free_frags(struct btusb_data *data)
 958 {
 959         unsigned long flags;
 960
 961         spin_lock_irqsave(&data->rxlock, flags);
 962
 963         dev_kfree_skb_irq(data->evt_skb);
 964         data->evt_skb = NULL;
 965
 966         dev_kfree_skb_irq(data->acl_skb);
 967         data->acl_skb = NULL;
 968
 969         dev_kfree_skb_irq(data->sco_skb);
 970         data->sco_skb = NULL;
 971
 972         spin_unlock_irqrestore(&data->rxlock, flags);
 973 }
 974
 975 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
 976 {
 977         if (data->intr_interval) {
 978                 /* Trigger dequeue immediatelly if an event is received */
 979                 schedule_delayed_work(&data->rx_work, 0);
 980         }
 981
 982         return data->recv_event(data->hdev, skb);
 983 }
 984
 985 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 986 {
 987         struct sk_buff *skb;
 988         unsigned long flags;
 989         int err = 0;
 990
 991         spin_lock_irqsave(&data->rxlock, flags);
 992         skb = data->evt_skb;
 993
 994         while (count) {
 995                 int len;
 996
 997                 if (!skb) {
 998                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 999                         if (!skb) {
1000                                 err = -ENOMEM;
1001                                 break;
1002                         }
1003
1004                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1005                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
1006                 }
1007
1008                 len = min_t(uint, hci_skb_expect(skb), count);
1009                 skb_put_data(skb, buffer, len);
1010
1011                 count -= len;
1012                 buffer += len;
1013                 hci_skb_expect(skb) -= len;
1014
1015                 if (skb->len == HCI_EVENT_HDR_SIZE) {
1016                         /* Complete event header */
1017                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
1018
1019                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1020                                 kfree_skb(skb);
1021                                 skb = NULL;
1022
1023                                 err = -EILSEQ;
1024                                 break;
1025                         }
1026                 }
1027
1028                 if (!hci_skb_expect(skb)) {
1029                         /* Complete frame */
1030                         btusb_recv_event(data, skb);
1031                         skb = NULL;
1032                 }
1033         }
1034
1035         data->evt_skb = skb;
1036         spin_unlock_irqrestore(&data->rxlock, flags);
1037
1038         return err;
1039 }
1040
1041 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1042 {
1043         /* Only queue ACL packet if intr_interval is set as it means
1044          * force_poll_sync has been enabled.
1045          */
1046         if (!data->intr_interval)
1047                 return data->recv_acl(data->hdev, skb);
1048
1049         skb_queue_tail(&data->acl_q, skb);
1050         schedule_delayed_work(&data->rx_work, data->intr_interval);
1051
1052         return 0;
1053 }
1054
1055 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1056 {
1057         struct sk_buff *skb;
1058         unsigned long flags;
1059         int err = 0;
1060
1061         spin_lock_irqsave(&data->rxlock, flags);
1062         skb = data->acl_skb;
1063
1064         while (count) {
1065                 int len;
1066
1067                 if (!skb) {
1068                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1069                         if (!skb) {
1070                                 err = -ENOMEM;
1071                                 break;
1072                         }
1073
1074                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1075                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1076                 }
1077
1078                 len = min_t(uint, hci_skb_expect(skb), count);
1079                 skb_put_data(skb, buffer, len);
1080
1081                 count -= len;
1082                 buffer += len;
1083                 hci_skb_expect(skb) -= len;
1084
1085                 if (skb->len == HCI_ACL_HDR_SIZE) {
1086                         __le16 dlen = hci_acl_hdr(skb)->dlen;
1087
1088                         /* Complete ACL header */
1089                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
1090
1091                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1092                                 kfree_skb(skb);
1093                                 skb = NULL;
1094
1095                                 err = -EILSEQ;
1096                                 break;
1097                         }
1098                 }
1099
1100                 if (!hci_skb_expect(skb)) {
1101                         /* Complete frame */
1102                         btusb_recv_acl(data, skb);
1103                         skb = NULL;
1104                 }
1105         }
1106
1107         data->acl_skb = skb;
1108         spin_unlock_irqrestore(&data->rxlock, flags);
1109
1110         return err;
1111 }
1112
1113 static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1114                                       struct hci_sco_hdr *hdr)
1115 {
1116         __u16 handle;
1117
1118         if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1119                 // Can't validate, userspace controls everything.
1120                 return true;
1121
1122         /*
1123          * USB isochronous transfers are not designed to be reliable and may
1124          * lose fragments.  When this happens, the next first fragment
1125          * encountered might actually be a continuation fragment.
1126          * Validate the handle to detect it and drop it, or else the upper
1127          * layer will get garbage for a while.
1128          */
1129
1130         handle = hci_handle(__le16_to_cpu(hdr->handle));
1131
1132         switch (hci_conn_lookup_type(hdev, handle)) {
1133         case SCO_LINK:
1134         case ESCO_LINK:
1135                 return true;
1136         default:
1137                 return false;
1138         }
1139 }
1140
1141 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1142 {
1143         struct sk_buff *skb;
1144         unsigned long flags;
1145         int err = 0;
1146
1147         spin_lock_irqsave(&data->rxlock, flags);
1148         skb = data->sco_skb;
1149
1150         while (count) {
1151                 int len;
1152
1153                 if (!skb) {
1154                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1155                         if (!skb) {
1156                                 err = -ENOMEM;
1157                                 break;
1158                         }
1159
1160                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1161                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1162                 }
1163
1164                 len = min_t(uint, hci_skb_expect(skb), count);
1165                 skb_put_data(skb, buffer, len);
1166
1167                 count -= len;
1168                 buffer += len;
1169                 hci_skb_expect(skb) -= len;
1170
1171                 if (skb->len == HCI_SCO_HDR_SIZE) {
1172                         /* Complete SCO header */
1173                         struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1174
1175                         hci_skb_expect(skb) = hdr->dlen;
1176
1177                         if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1178                             !btusb_validate_sco_handle(data->hdev, hdr)) {
1179                                 kfree_skb(skb);
1180                                 skb = NULL;
1181
1182                                 err = -EILSEQ;
1183                                 break;
1184                         }
1185                 }
1186
1187                 if (!hci_skb_expect(skb)) {
1188                         /* Complete frame */
1189                         hci_recv_frame(data->hdev, skb);
1190                         skb = NULL;
1191                 }
1192         }
1193
1194         data->sco_skb = skb;
1195         spin_unlock_irqrestore(&data->rxlock, flags);
1196
1197         return err;
1198 }
1199
1200 static void btusb_intr_complete(struct urb *urb)
1201 {
1202         struct hci_dev *hdev = urb->context;
1203         struct btusb_data *data = hci_get_drvdata(hdev);
1204         int err;
1205
1206         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1207                urb->actual_length);
1208
1209         if (!test_bit(HCI_RUNNING, &hdev->flags))
1210                 return;
1211
1212         if (urb->status == 0) {
1213                 hdev->stat.byte_rx += urb->actual_length;
1214
1215                 if (btusb_recv_intr(data, urb->transfer_buffer,
1216                                     urb->actual_length) < 0) {
1217                         bt_dev_err(hdev, "corrupted event packet");
1218                         hdev->stat.err_rx++;
1219                 }
1220         } else if (urb->status == -ENOENT) {
1221                 /* Avoid suspend failed when usb_kill_urb */
1222                 return;
1223         }
1224
1225         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1226                 return;
1227
1228         usb_mark_last_busy(data->udev);
1229         usb_anchor_urb(urb, &data->intr_anchor);
1230
1231         err = usb_submit_urb(urb, GFP_ATOMIC);
1232         if (err < 0) {
1233                 /* -EPERM: urb is being killed;
1234                  * -ENODEV: device got disconnected
1235                  */
1236                 if (err != -EPERM && err != -ENODEV)
1237                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1238                                    urb, -err);
1239                 if (err != -EPERM)
1240                         hci_cmd_sync_cancel(hdev, -err);
1241                 usb_unanchor_urb(urb);
1242         }
1243 }
1244
1245 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1246 {
1247         struct btusb_data *data = hci_get_drvdata(hdev);
1248         struct urb *urb;
1249         unsigned char *buf;
1250         unsigned int pipe;
1251         int err, size;
1252
1253         BT_DBG("%s", hdev->name);
1254
1255         if (!data->intr_ep)
1256                 return -ENODEV;
1257
1258         urb = usb_alloc_urb(0, mem_flags);
1259         if (!urb)
1260                 return -ENOMEM;
1261
1262         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1263
1264         buf = kmalloc(size, mem_flags);
1265         if (!buf) {
1266                 usb_free_urb(urb);
1267                 return -ENOMEM;
1268         }
1269
1270         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1271
1272         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1273                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1274
1275         urb->transfer_flags |= URB_FREE_BUFFER;
1276
1277         usb_anchor_urb(urb, &data->intr_anchor);
1278
1279         err = usb_submit_urb(urb, mem_flags);
1280         if (err < 0) {
1281                 if (err != -EPERM && err != -ENODEV)
1282                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1283                                    urb, -err);
1284                 if (err != -EPERM)
1285                         hci_cmd_sync_cancel(hdev, -err);
1286                 usb_unanchor_urb(urb);
1287         }
1288
1289         /* Only initialize intr_interval if URB poll sync is enabled */
1290         if (!data->poll_sync)
1291                 goto done;
1292
1293         /* The units are frames (milliseconds) for full and low speed devices,
1294          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1295          * devices.
1296          *
1297          * This is done once on open/resume so it shouldn't change even if
1298          * force_poll_sync changes.
1299          */
1300         switch (urb->dev->speed) {
1301         case USB_SPEED_SUPER_PLUS:
1302         case USB_SPEED_SUPER:   /* units are 125us */
1303                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1304                 break;
1305         default:
1306                 data->intr_interval = msecs_to_jiffies(urb->interval);
1307                 break;
1308         }
1309
1310 done:
1311         usb_free_urb(urb);
1312
1313         return err;
1314 }
1315
1316 static void btusb_bulk_complete(struct urb *urb)
1317 {
1318         struct hci_dev *hdev = urb->context;
1319         struct btusb_data *data = hci_get_drvdata(hdev);
1320         int err;
1321
1322         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1323                urb->actual_length);
1324
1325         if (!test_bit(HCI_RUNNING, &hdev->flags))
1326                 return;
1327
1328         if (urb->status == 0) {
1329                 hdev->stat.byte_rx += urb->actual_length;
1330
1331                 if (data->recv_bulk(data, urb->transfer_buffer,
1332                                     urb->actual_length) < 0) {
1333                         bt_dev_err(hdev, "corrupted ACL packet");
1334                         hdev->stat.err_rx++;
1335                 }
1336         } else if (urb->status == -ENOENT) {
1337                 /* Avoid suspend failed when usb_kill_urb */
1338                 return;
1339         }
1340
1341         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1342                 return;
1343
1344         usb_anchor_urb(urb, &data->bulk_anchor);
1345         usb_mark_last_busy(data->udev);
1346
1347         err = usb_submit_urb(urb, GFP_ATOMIC);
1348         if (err < 0) {
1349                 /* -EPERM: urb is being killed;
1350                  * -ENODEV: device got disconnected
1351                  */
1352                 if (err != -EPERM && err != -ENODEV)
1353                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1354                                    urb, -err);
1355                 usb_unanchor_urb(urb);
1356         }
1357 }
1358
1359 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1360 {
1361         struct btusb_data *data = hci_get_drvdata(hdev);
1362         struct urb *urb;
1363         unsigned char *buf;
1364         unsigned int pipe;
1365         int err, size = HCI_MAX_FRAME_SIZE;
1366
1367         BT_DBG("%s", hdev->name);
1368
1369         if (!data->bulk_rx_ep)
1370                 return -ENODEV;
1371
1372         urb = usb_alloc_urb(0, mem_flags);
1373         if (!urb)
1374                 return -ENOMEM;
1375
1376         buf = kmalloc(size, mem_flags);
1377         if (!buf) {
1378                 usb_free_urb(urb);
1379                 return -ENOMEM;
1380         }
1381
1382         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1383
1384         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1385                           btusb_bulk_complete, hdev);
1386
1387         urb->transfer_flags |= URB_FREE_BUFFER;
1388
1389         usb_mark_last_busy(data->udev);
1390         usb_anchor_urb(urb, &data->bulk_anchor);
1391
1392         err = usb_submit_urb(urb, mem_flags);
1393         if (err < 0) {
1394                 if (err != -EPERM && err != -ENODEV)
1395                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1396                                    urb, -err);
1397                 usb_unanchor_urb(urb);
1398         }
1399
1400         usb_free_urb(urb);
1401
1402         return err;
1403 }
1404
1405 static void btusb_isoc_complete(struct urb *urb)
1406 {
1407         struct hci_dev *hdev = urb->context;
1408         struct btusb_data *data = hci_get_drvdata(hdev);
1409         int i, err;
1410
1411         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1412                urb->actual_length);
1413
1414         if (!test_bit(HCI_RUNNING, &hdev->flags))
1415                 return;
1416
1417         if (urb->status == 0) {
1418                 for (i = 0; i < urb->number_of_packets; i++) {
1419                         unsigned int offset = urb->iso_frame_desc[i].offset;
1420                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1421
1422                         if (urb->iso_frame_desc[i].status)
1423                                 continue;
1424
1425                         hdev->stat.byte_rx += length;
1426
1427                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1428                                             length) < 0) {
1429                                 bt_dev_err(hdev, "corrupted SCO packet");
1430                                 hdev->stat.err_rx++;
1431                         }
1432                 }
1433         } else if (urb->status == -ENOENT) {
1434                 /* Avoid suspend failed when usb_kill_urb */
1435                 return;
1436         }
1437
1438         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1439                 return;
1440
1441         usb_anchor_urb(urb, &data->isoc_anchor);
1442
1443         err = usb_submit_urb(urb, GFP_ATOMIC);
1444         if (err < 0) {
1445                 /* -EPERM: urb is being killed;
1446                  * -ENODEV: device got disconnected
1447                  */
1448                 if (err != -EPERM && err != -ENODEV)
1449                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1450                                    urb, -err);
1451                 usb_unanchor_urb(urb);
1452         }
1453 }
1454
1455 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1456                                                int mtu, struct btusb_data *data)
1457 {
1458         int i = 0, offset = 0;
1459         unsigned int interval;
1460
1461         BT_DBG("len %d mtu %d", len, mtu);
1462
1463         /* For mSBC ALT 6 settings some chips need to transmit the data
1464          * continuously without the zero length of USB packets.
1465          */
1466         if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1467                 goto ignore_usb_alt6_packet_flow;
1468
1469         /* For mSBC ALT 6 setting the host will send the packet at continuous
1470          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1471          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1472          * To maintain the rate we send 63bytes of usb packets alternatively for
1473          * 7ms and 8ms to maintain the rate as 7.5ms.
1474          */
1475         if (data->usb_alt6_packet_flow) {
1476                 interval = 7;
1477                 data->usb_alt6_packet_flow = false;
1478         } else {
1479                 interval = 6;
1480                 data->usb_alt6_packet_flow = true;
1481         }
1482
1483         for (i = 0; i < interval; i++) {
1484                 urb->iso_frame_desc[i].offset = offset;
1485                 urb->iso_frame_desc[i].length = offset;
1486         }
1487
1488 ignore_usb_alt6_packet_flow:
1489         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1490                 urb->iso_frame_desc[i].offset = offset;
1491                 urb->iso_frame_desc[i].length = len;
1492                 i++;
1493         }
1494
1495         urb->number_of_packets = i;
1496 }
1497
1498 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1499 {
1500         int i, offset = 0;
1501
1502         BT_DBG("len %d mtu %d", len, mtu);
1503
1504         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1505                                         i++, offset += mtu, len -= mtu) {
1506                 urb->iso_frame_desc[i].offset = offset;
1507                 urb->iso_frame_desc[i].length = mtu;
1508         }
1509
1510         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1511                 urb->iso_frame_desc[i].offset = offset;
1512                 urb->iso_frame_desc[i].length = len;
1513                 i++;
1514         }
1515
1516         urb->number_of_packets = i;
1517 }
1518
1519 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1520 {
1521         struct btusb_data *data = hci_get_drvdata(hdev);
1522         struct urb *urb;
1523         unsigned char *buf;
1524         unsigned int pipe;
1525         int err, size;
1526
1527         BT_DBG("%s", hdev->name);
1528
1529         if (!data->isoc_rx_ep)
1530                 return -ENODEV;
1531
1532         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1533         if (!urb)
1534                 return -ENOMEM;
1535
1536         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1537                                                 BTUSB_MAX_ISOC_FRAMES;
1538
1539         buf = kmalloc(size, mem_flags);
1540         if (!buf) {
1541                 usb_free_urb(urb);
1542                 return -ENOMEM;
1543         }
1544
1545         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1546
1547         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1548                          hdev, data->isoc_rx_ep->bInterval);
1549
1550         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1551
1552         __fill_isoc_descriptor(urb, size,
1553                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1554
1555         usb_anchor_urb(urb, &data->isoc_anchor);
1556
1557         err = usb_submit_urb(urb, mem_flags);
1558         if (err < 0) {
1559                 if (err != -EPERM && err != -ENODEV)
1560                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1561                                    urb, -err);
1562                 usb_unanchor_urb(urb);
1563         }
1564
1565         usb_free_urb(urb);
1566
1567         return err;
1568 }
1569
1570 static void btusb_diag_complete(struct urb *urb)
1571 {
1572         struct hci_dev *hdev = urb->context;
1573         struct btusb_data *data = hci_get_drvdata(hdev);
1574         int err;
1575
1576         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1577                urb->actual_length);
1578
1579         if (urb->status == 0) {
1580                 struct sk_buff *skb;
1581
1582                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1583                 if (skb) {
1584                         skb_put_data(skb, urb->transfer_buffer,
1585                                      urb->actual_length);
1586                         hci_recv_diag(hdev, skb);
1587                 }
1588         } else if (urb->status == -ENOENT) {
1589                 /* Avoid suspend failed when usb_kill_urb */
1590                 return;
1591         }
1592
1593         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1594                 return;
1595
1596         usb_anchor_urb(urb, &data->diag_anchor);
1597         usb_mark_last_busy(data->udev);
1598
1599         err = usb_submit_urb(urb, GFP_ATOMIC);
1600         if (err < 0) {
1601                 /* -EPERM: urb is being killed;
1602                  * -ENODEV: device got disconnected
1603                  */
1604                 if (err != -EPERM && err != -ENODEV)
1605                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1606                                    urb, -err);
1607                 usb_unanchor_urb(urb);
1608         }
1609 }
1610
1611 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1612 {
1613         struct btusb_data *data = hci_get_drvdata(hdev);
1614         struct urb *urb;
1615         unsigned char *buf;
1616         unsigned int pipe;
1617         int err, size = HCI_MAX_FRAME_SIZE;
1618
1619         BT_DBG("%s", hdev->name);
1620
1621         if (!data->diag_rx_ep)
1622                 return -ENODEV;
1623
1624         urb = usb_alloc_urb(0, mem_flags);
1625         if (!urb)
1626                 return -ENOMEM;
1627
1628         buf = kmalloc(size, mem_flags);
1629         if (!buf) {
1630                 usb_free_urb(urb);
1631                 return -ENOMEM;
1632         }
1633
1634         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1635
1636         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1637                           btusb_diag_complete, hdev);
1638
1639         urb->transfer_flags |= URB_FREE_BUFFER;
1640
1641         usb_mark_last_busy(data->udev);
1642         usb_anchor_urb(urb, &data->diag_anchor);
1643
1644         err = usb_submit_urb(urb, mem_flags);
1645         if (err < 0) {
1646                 if (err != -EPERM && err != -ENODEV)
1647                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1648                                    urb, -err);
1649                 usb_unanchor_urb(urb);
1650         }
1651
1652         usb_free_urb(urb);
1653
1654         return err;
1655 }
1656
1657 static void btusb_tx_complete(struct urb *urb)
1658 {
1659         struct sk_buff *skb = urb->context;
1660         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1661         struct btusb_data *data = hci_get_drvdata(hdev);
1662         unsigned long flags;
1663
1664         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1665                urb->actual_length);
1666
1667         if (!test_bit(HCI_RUNNING, &hdev->flags))
1668                 goto done;
1669
1670         if (!urb->status) {
1671                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1672         } else {
1673                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1674                         hci_cmd_sync_cancel(hdev, -urb->status);
1675                 hdev->stat.err_tx++;
1676         }
1677
1678 done:
1679         spin_lock_irqsave(&data->txlock, flags);
1680         data->tx_in_flight--;
1681         spin_unlock_irqrestore(&data->txlock, flags);
1682
1683         kfree(urb->setup_packet);
1684
1685         kfree_skb(skb);
1686 }
1687
1688 static void btusb_isoc_tx_complete(struct urb *urb)
1689 {
1690         struct sk_buff *skb = urb->context;
1691         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1692
1693         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1694                urb->actual_length);
1695
1696         if (!test_bit(HCI_RUNNING, &hdev->flags))
1697                 goto done;
1698
1699         if (!urb->status)
1700                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1701         else
1702                 hdev->stat.err_tx++;
1703
1704 done:
1705         kfree(urb->setup_packet);
1706
1707         kfree_skb(skb);
1708 }
1709
1710 static int btusb_open(struct hci_dev *hdev)
1711 {
1712         struct btusb_data *data = hci_get_drvdata(hdev);
1713         int err;
1714
1715         BT_DBG("%s", hdev->name);
1716
1717         err = usb_autopm_get_interface(data->intf);
1718         if (err < 0)
1719                 return err;
1720
1721         /* Patching USB firmware files prior to starting any URBs of HCI path
1722          * It is more safe to use USB bulk channel for downloading USB patch
1723          */
1724         if (data->setup_on_usb) {
1725                 err = data->setup_on_usb(hdev);
1726                 if (err < 0)
1727                         goto setup_fail;
1728         }
1729
1730         data->intf->needs_remote_wakeup = 1;
1731
1732         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1733                 goto done;
1734
1735         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1736         if (err < 0)
1737                 goto failed;
1738
1739         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1740         if (err < 0) {
1741                 usb_kill_anchored_urbs(&data->intr_anchor);
1742                 goto failed;
1743         }
1744
1745         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1746         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1747
1748         if (data->diag) {
1749                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1750                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1751         }
1752
1753 done:
1754         usb_autopm_put_interface(data->intf);
1755         return 0;
1756
1757 failed:
1758         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1759 setup_fail:
1760         usb_autopm_put_interface(data->intf);
1761         return err;
1762 }
1763
1764 static void btusb_stop_traffic(struct btusb_data *data)
1765 {
1766         usb_kill_anchored_urbs(&data->intr_anchor);
1767         usb_kill_anchored_urbs(&data->bulk_anchor);
1768         usb_kill_anchored_urbs(&data->isoc_anchor);
1769         usb_kill_anchored_urbs(&data->diag_anchor);
1770         usb_kill_anchored_urbs(&data->ctrl_anchor);
1771 }
1772
1773 static int btusb_close(struct hci_dev *hdev)
1774 {
1775         struct btusb_data *data = hci_get_drvdata(hdev);
1776         int err;
1777
1778         BT_DBG("%s", hdev->name);
1779
1780         cancel_delayed_work(&data->rx_work);
1781         cancel_work_sync(&data->work);
1782         cancel_work_sync(&data->waker);
1783
1784         skb_queue_purge(&data->acl_q);
1785
1786         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1787         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1788         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1789         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1790
1791         btusb_stop_traffic(data);
1792         btusb_free_frags(data);
1793
1794         err = usb_autopm_get_interface(data->intf);
1795         if (err < 0)
1796                 goto failed;
1797
1798         data->intf->needs_remote_wakeup = 0;
1799
1800         /* Enable remote wake up for auto-suspend */
1801         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1802                 data->intf->needs_remote_wakeup = 1;
1803
1804         usb_autopm_put_interface(data->intf);
1805
1806 failed:
1807         usb_scuttle_anchored_urbs(&data->deferred);
1808         return 0;
1809 }
1810
1811 static int btusb_flush(struct hci_dev *hdev)
1812 {
1813         struct btusb_data *data = hci_get_drvdata(hdev);
1814
1815         BT_DBG("%s", hdev->name);
1816
1817         cancel_delayed_work(&data->rx_work);
1818
1819         skb_queue_purge(&data->acl_q);
1820
1821         usb_kill_anchored_urbs(&data->tx_anchor);
1822         btusb_free_frags(data);
1823
1824         return 0;
1825 }
1826
1827 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1828 {
1829         struct btusb_data *data = hci_get_drvdata(hdev);
1830         struct usb_ctrlrequest *dr;
1831         struct urb *urb;
1832         unsigned int pipe;
1833
1834         urb = usb_alloc_urb(0, GFP_KERNEL);
1835         if (!urb)
1836                 return ERR_PTR(-ENOMEM);
1837
1838         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1839         if (!dr) {
1840                 usb_free_urb(urb);
1841                 return ERR_PTR(-ENOMEM);
1842         }
1843
1844         dr->bRequestType = data->cmdreq_type;
1845         dr->bRequest     = data->cmdreq;
1846         dr->wIndex       = 0;
1847         dr->wValue       = 0;
1848         dr->wLength      = __cpu_to_le16(skb->len);
1849
1850         pipe = usb_sndctrlpipe(data->udev, 0x00);
1851
1852         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1853                              skb->data, skb->len, btusb_tx_complete, skb);
1854
1855         skb->dev = (void *)hdev;
1856
1857         return urb;
1858 }
1859
1860 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1861 {
1862         struct btusb_data *data = hci_get_drvdata(hdev);
1863         struct urb *urb;
1864         unsigned int pipe;
1865
1866         if (!data->bulk_tx_ep)
1867                 return ERR_PTR(-ENODEV);
1868
1869         urb = usb_alloc_urb(0, GFP_KERNEL);
1870         if (!urb)
1871                 return ERR_PTR(-ENOMEM);
1872
1873         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1874
1875         usb_fill_bulk_urb(urb, data->udev, pipe,
1876                           skb->data, skb->len, btusb_tx_complete, skb);
1877
1878         skb->dev = (void *)hdev;
1879
1880         return urb;
1881 }
1882
1883 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1884 {
1885         struct btusb_data *data = hci_get_drvdata(hdev);
1886         struct urb *urb;
1887         unsigned int pipe;
1888
1889         if (!data->isoc_tx_ep)
1890                 return ERR_PTR(-ENODEV);
1891
1892         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1893         if (!urb)
1894                 return ERR_PTR(-ENOMEM);
1895
1896         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1897
1898         usb_fill_int_urb(urb, data->udev, pipe,
1899                          skb->data, skb->len, btusb_isoc_tx_complete,
1900                          skb, data->isoc_tx_ep->bInterval);
1901
1902         urb->transfer_flags  = URB_ISO_ASAP;
1903
1904         if (data->isoc_altsetting == 6)
1905                 __fill_isoc_descriptor_msbc(urb, skb->len,
1906                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1907                                             data);
1908         else
1909                 __fill_isoc_descriptor(urb, skb->len,
1910                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1911         skb->dev = (void *)hdev;
1912
1913         return urb;
1914 }
1915
1916 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1917 {
1918         struct btusb_data *data = hci_get_drvdata(hdev);
1919         int err;
1920
1921         usb_anchor_urb(urb, &data->tx_anchor);
1922
1923         err = usb_submit_urb(urb, GFP_KERNEL);
1924         if (err < 0) {
1925                 if (err != -EPERM && err != -ENODEV)
1926                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1927                                    urb, -err);
1928                 kfree(urb->setup_packet);
1929                 usb_unanchor_urb(urb);
1930         } else {
1931                 usb_mark_last_busy(data->udev);
1932         }
1933
1934         usb_free_urb(urb);
1935         return err;
1936 }
1937
1938 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1939 {
1940         struct btusb_data *data = hci_get_drvdata(hdev);
1941         unsigned long flags;
1942         bool suspending;
1943
1944         spin_lock_irqsave(&data->txlock, flags);
1945         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1946         if (!suspending)
1947                 data->tx_in_flight++;
1948         spin_unlock_irqrestore(&data->txlock, flags);
1949
1950         if (!suspending)
1951                 return submit_tx_urb(hdev, urb);
1952
1953         usb_anchor_urb(urb, &data->deferred);
1954         schedule_work(&data->waker);
1955
1956         usb_free_urb(urb);
1957         return 0;
1958 }
1959
1960 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1961 {
1962         struct urb *urb;
1963
1964         BT_DBG("%s", hdev->name);
1965
1966         switch (hci_skb_pkt_type(skb)) {
1967         case HCI_COMMAND_PKT:
1968                 urb = alloc_ctrl_urb(hdev, skb);
1969                 if (IS_ERR(urb))
1970                         return PTR_ERR(urb);
1971
1972                 hdev->stat.cmd_tx++;
1973                 return submit_or_queue_tx_urb(hdev, urb);
1974
1975         case HCI_ACLDATA_PKT:
1976                 urb = alloc_bulk_urb(hdev, skb);
1977                 if (IS_ERR(urb))
1978                         return PTR_ERR(urb);
1979
1980                 hdev->stat.acl_tx++;
1981                 return submit_or_queue_tx_urb(hdev, urb);
1982
1983         case HCI_SCODATA_PKT:
1984                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1985                         return -ENODEV;
1986
1987                 urb = alloc_isoc_urb(hdev, skb);
1988                 if (IS_ERR(urb))
1989                         return PTR_ERR(urb);
1990
1991                 hdev->stat.sco_tx++;
1992                 return submit_tx_urb(hdev, urb);
1993
1994         case HCI_ISODATA_PKT:
1995                 urb = alloc_bulk_urb(hdev, skb);
1996                 if (IS_ERR(urb))
1997                         return PTR_ERR(urb);
1998
1999                 return submit_or_queue_tx_urb(hdev, urb);
2000         }
2001
2002         return -EILSEQ;
2003 }
2004
2005 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
2006 {
2007         struct btusb_data *data = hci_get_drvdata(hdev);
2008
2009         BT_DBG("%s evt %d", hdev->name, evt);
2010
2011         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
2012                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
2013                 data->air_mode = evt;
2014                 schedule_work(&data->work);
2015         }
2016 }
2017
2018 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
2019 {
2020         struct btusb_data *data = hci_get_drvdata(hdev);
2021         struct usb_interface *intf = data->isoc;
2022         struct usb_endpoint_descriptor *ep_desc;
2023         int i, err;
2024
2025         if (!data->isoc)
2026                 return -ENODEV;
2027
2028         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
2029         if (err < 0) {
2030                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
2031                 return err;
2032         }
2033
2034         data->isoc_altsetting = altsetting;
2035
2036         data->isoc_tx_ep = NULL;
2037         data->isoc_rx_ep = NULL;
2038
2039         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2040                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2041
2042                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2043                         data->isoc_tx_ep = ep_desc;
2044                         continue;
2045                 }
2046
2047                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2048                         data->isoc_rx_ep = ep_desc;
2049                         continue;
2050                 }
2051         }
2052
2053         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2054                 bt_dev_err(hdev, "invalid SCO descriptors");
2055                 return -ENODEV;
2056         }
2057
2058         return 0;
2059 }
2060
2061 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2062 {
2063         struct btusb_data *data = hci_get_drvdata(hdev);
2064         int err;
2065
2066         if (data->isoc_altsetting != new_alts) {
2067                 unsigned long flags;
2068
2069                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2070                 usb_kill_anchored_urbs(&data->isoc_anchor);
2071
2072                 /* When isochronous alternate setting needs to be
2073                  * changed, because SCO connection has been added
2074                  * or removed, a packet fragment may be left in the
2075                  * reassembling state. This could lead to wrongly
2076                  * assembled fragments.
2077                  *
2078                  * Clear outstanding fragment when selecting a new
2079                  * alternate setting.
2080                  */
2081                 spin_lock_irqsave(&data->rxlock, flags);
2082                 kfree_skb(data->sco_skb);
2083                 data->sco_skb = NULL;
2084                 spin_unlock_irqrestore(&data->rxlock, flags);
2085
2086                 err = __set_isoc_interface(hdev, new_alts);
2087                 if (err < 0)
2088                         return err;
2089         }
2090
2091         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2092                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2093                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2094                 else
2095                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2096         }
2097
2098         return 0;
2099 }
2100
2101 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2102                                                         int alt)
2103 {
2104         struct usb_interface *intf = data->isoc;
2105         int i;
2106
2107         BT_DBG("Looking for Alt no :%d", alt);
2108
2109         if (!intf)
2110                 return NULL;
2111
2112         for (i = 0; i < intf->num_altsetting; i++) {
2113                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2114                         return &intf->altsetting[i];
2115         }
2116
2117         return NULL;
2118 }
2119
2120 static void btusb_work(struct work_struct *work)
2121 {
2122         struct btusb_data *data = container_of(work, struct btusb_data, work);
2123         struct hci_dev *hdev = data->hdev;
2124         int new_alts = 0;
2125         int err;
2126
2127         if (data->sco_num > 0) {
2128                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2129                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2130                         if (err < 0) {
2131                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2132                                 usb_kill_anchored_urbs(&data->isoc_anchor);
2133                                 return;
2134                         }
2135
2136                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2137                 }
2138
2139                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2140                         if (hdev->voice_setting & 0x0020) {
2141                                 static const int alts[3] = { 2, 4, 5 };
2142
2143                                 new_alts = alts[data->sco_num - 1];
2144                         } else {
2145                                 new_alts = data->sco_num;
2146                         }
2147                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2148                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2149                          * many adapters do not support it.  Alt 1 appears to
2150                          * work for all adapters that do not have alt 6, and
2151                          * which work with WBS at all.  Some devices prefer
2152                          * alt 3 (HCI payload >= 60 Bytes let air packet
2153                          * data satisfy 60 bytes), requiring
2154                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2155                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2156                          */
2157                         if (btusb_find_altsetting(data, 6))
2158                                 new_alts = 6;
2159                         else if (btusb_find_altsetting(data, 3) &&
2160                                  hdev->sco_mtu >= 72 &&
2161                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2162                                 new_alts = 3;
2163                         else
2164                                 new_alts = 1;
2165                 }
2166
2167                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2168                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2169         } else {
2170                 usb_kill_anchored_urbs(&data->isoc_anchor);
2171
2172                 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2173                         __set_isoc_interface(hdev, 0);
2174
2175                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2176                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2177         }
2178 }
2179
2180 static void btusb_waker(struct work_struct *work)
2181 {
2182         struct btusb_data *data = container_of(work, struct btusb_data, waker);
2183         int err;
2184
2185         err = usb_autopm_get_interface(data->intf);
2186         if (err < 0)
2187                 return;
2188
2189         usb_autopm_put_interface(data->intf);
2190 }
2191
2192 static void btusb_rx_work(struct work_struct *work)
2193 {
2194         struct btusb_data *data = container_of(work, struct btusb_data,
2195                                                rx_work.work);
2196         struct sk_buff *skb;
2197
2198         /* Dequeue ACL data received during the interval */
2199         while ((skb = skb_dequeue(&data->acl_q)))
2200                 data->recv_acl(data->hdev, skb);
2201 }
2202
2203 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2204 {
2205         struct sk_buff *skb;
2206         u8 val = 0x00;
2207
2208         BT_DBG("%s", hdev->name);
2209
2210         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2211         if (IS_ERR(skb))
2212                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2213         else
2214                 kfree_skb(skb);
2215
2216         return 0;
2217 }
2218
2219 static int btusb_setup_csr(struct hci_dev *hdev)
2220 {
2221         struct btusb_data *data = hci_get_drvdata(hdev);
2222         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2223         struct hci_rp_read_local_version *rp;
2224         struct sk_buff *skb;
2225         bool is_fake = false;
2226         int ret;
2227
2228         BT_DBG("%s", hdev->name);
2229
2230         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2231                              HCI_INIT_TIMEOUT);
2232         if (IS_ERR(skb)) {
2233                 int err = PTR_ERR(skb);
2234                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2235                 return err;
2236         }
2237
2238         rp = skb_pull_data(skb, sizeof(*rp));
2239         if (!rp) {
2240                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2241                 kfree_skb(skb);
2242                 return -EIO;
2243         }
2244
2245         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2246                     rp->hci_ver, le16_to_cpu(rp->hci_rev));
2247
2248         bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2249                     rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2250                     le16_to_cpu(rp->manufacturer));
2251
2252         /* Detect a wide host of Chinese controllers that aren't CSR.
2253          *
2254          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2255          *
2256          * The main thing they have in common is that these are really popular low-cost
2257          * options that support newer Bluetooth versions but rely on heavy VID/PID
2258          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2259          *
2260          * We detect actual CSR devices by checking that the HCI manufacturer code
2261          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2262          * HCI rev values always match. As they both store the firmware number.
2263          */
2264         if (le16_to_cpu(rp->manufacturer) != 10 ||
2265             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2266                 is_fake = true;
2267
2268         /* Known legit CSR firmware build numbers and their supported BT versions:
2269          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2270          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2271          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2272          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2273          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2274          *
2275          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2276          *      support BT 1.1 only; so it's a dead giveaway when some
2277          *      third-party BT 4.0 dongle reuses it.
2278          */
2279         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2280                  rp->hci_ver > BLUETOOTH_VER_1_1)
2281                 is_fake = true;
2282
2283         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2284                  rp->hci_ver > BLUETOOTH_VER_1_2)
2285                 is_fake = true;
2286
2287         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2288                  rp->hci_ver > BLUETOOTH_VER_2_0)
2289                 is_fake = true;
2290
2291         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2292                  rp->hci_ver > BLUETOOTH_VER_2_1)
2293                 is_fake = true;
2294
2295         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2296                  rp->hci_ver > BLUETOOTH_VER_4_0)
2297                 is_fake = true;
2298
2299         /* Other clones which beat all the above checks */
2300         else if (bcdDevice == 0x0134 &&
2301                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2302                  rp->hci_ver == BLUETOOTH_VER_2_0)
2303                 is_fake = true;
2304
2305         if (is_fake) {
2306                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2307
2308                 /* Generally these clones have big discrepancies between
2309                  * advertised features and what's actually supported.
2310                  * Probably will need to be expanded in the future;
2311                  * without these the controller will lock up.
2312                  */
2313                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2314                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2315                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2316                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2317
2318                 /* Clear the reset quirk since this is not an actual
2319                  * early Bluetooth 1.1 device from CSR.
2320                  */
2321                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2322                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2323
2324                 /*
2325                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2326                  *
2327                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2328                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2329                  *
2330                  * These controllers are really messed-up.
2331                  *
2332                  * 1. Their bulk RX endpoint will never report any data unless
2333                  *    the device was suspended at least once (yes, really).
2334                  * 2. They will not wakeup when autosuspended and receiving data
2335                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2336                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2337                  *
2338                  * To fix 1. enable runtime-suspend, force-suspend the
2339                  * HCI and then wake-it up by disabling runtime-suspend.
2340                  *
2341                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2342                  * will still be autosuspended when it is not open.
2343                  *
2344                  * --
2345                  *
2346                  * Because these are widespread problems we prefer generic solutions; so
2347                  * apply this initialization quirk to every controller that gets here,
2348                  * it should be harmless. The alternative is to not work at all.
2349                  */
2350                 pm_runtime_allow(&data->udev->dev);
2351
2352                 ret = pm_runtime_suspend(&data->udev->dev);
2353                 if (ret >= 0)
2354                         msleep(200);
2355                 else
2356                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2357
2358                 pm_runtime_forbid(&data->udev->dev);
2359
2360                 device_set_wakeup_capable(&data->udev->dev, false);
2361
2362                 /* Re-enable autosuspend if this was requested */
2363                 if (enable_autosuspend)
2364                         usb_enable_autosuspend(data->udev);
2365         }
2366
2367         kfree_skb(skb);
2368
2369         return 0;
2370 }
2371
2372 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2373 {
2374         struct sk_buff *skb;
2375         struct hci_event_hdr *hdr;
2376         struct hci_ev_cmd_complete *evt;
2377
2378         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2379         if (!skb)
2380                 return -ENOMEM;
2381
2382         hdr = skb_put(skb, sizeof(*hdr));
2383         hdr->evt = HCI_EV_CMD_COMPLETE;
2384         hdr->plen = sizeof(*evt) + 1;
2385
2386         evt = skb_put(skb, sizeof(*evt));
2387         evt->ncmd = 0x01;
2388         evt->opcode = cpu_to_le16(opcode);
2389
2390         skb_put_u8(skb, 0x00);
2391
2392         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2393
2394         return hci_recv_frame(hdev, skb);
2395 }
2396
2397 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2398                                  int count)
2399 {
2400         struct hci_dev *hdev = data->hdev;
2401
2402         /* When the device is in bootloader mode, then it can send
2403          * events via the bulk endpoint. These events are treated the
2404          * same way as the ones received from the interrupt endpoint.
2405          */
2406         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2407                 return btusb_recv_intr(data, buffer, count);
2408
2409         return btusb_recv_bulk(data, buffer, count);
2410 }
2411
2412 static int btusb_intel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb)
2413 {
2414         struct intel_tlv *tlv = (void *)&skb->data[5];
2415
2416         /* The first event is always an event type TLV */
2417         if (tlv->type != INTEL_TLV_TYPE_ID)
2418                 goto recv_frame;
2419
2420         switch (tlv->val[0]) {
2421         case INTEL_TLV_SYSTEM_EXCEPTION:
2422         case INTEL_TLV_FATAL_EXCEPTION:
2423         case INTEL_TLV_DEBUG_EXCEPTION:
2424         case INTEL_TLV_TEST_EXCEPTION:
2425                 /* Generate devcoredump from exception */
2426                 if (!hci_devcd_init(hdev, skb->len)) {
2427                         hci_devcd_append(hdev, skb);
2428                         hci_devcd_complete(hdev);
2429                 } else {
2430                         bt_dev_err(hdev, "Failed to generate devcoredump");
2431                         kfree_skb(skb);
2432                 }
2433                 return 0;
2434         default:
2435                 bt_dev_err(hdev, "Invalid exception type %02X", tlv->val[0]);
2436         }
2437
2438 recv_frame:
2439         return hci_recv_frame(hdev, skb);
2440 }
2441
2442 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2443 {
2444         struct hci_event_hdr *hdr = (void *)skb->data;
2445         const char diagnostics_hdr[] = { 0x87, 0x80, 0x03 };
2446
2447         if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2448             hdr->plen > 0) {
2449                 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2450                 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2451
2452                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2453                         switch (skb->data[2]) {
2454                         case 0x02:
2455                                 /* When switching to the operational firmware
2456                                  * the device sends a vendor specific event
2457                                  * indicating that the bootup completed.
2458                                  */
2459                                 btintel_bootup(hdev, ptr, len);
2460                                 break;
2461                         case 0x06:
2462                                 /* When the firmware loading completes the
2463                                  * device sends out a vendor specific event
2464                                  * indicating the result of the firmware
2465                                  * loading.
2466                                  */
2467                                 btintel_secure_send_result(hdev, ptr, len);
2468                                 break;
2469                         }
2470                 }
2471
2472                 /* Handle all diagnostics events separately. May still call
2473                  * hci_recv_frame.
2474                  */
2475                 if (len >= sizeof(diagnostics_hdr) &&
2476                     memcmp(&skb->data[2], diagnostics_hdr,
2477                            sizeof(diagnostics_hdr)) == 0) {
2478                         return btusb_intel_diagnostics(hdev, skb);
2479                 }
2480         }
2481
2482         return hci_recv_frame(hdev, skb);
2483 }
2484
2485 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2486 {
2487         struct urb *urb;
2488
2489         BT_DBG("%s", hdev->name);
2490
2491         switch (hci_skb_pkt_type(skb)) {
2492         case HCI_COMMAND_PKT:
2493                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2494                         struct hci_command_hdr *cmd = (void *)skb->data;
2495                         __u16 opcode = le16_to_cpu(cmd->opcode);
2496
2497                         /* When in bootloader mode and the command 0xfc09
2498                          * is received, it needs to be send down the
2499                          * bulk endpoint. So allocate a bulk URB instead.
2500                          */
2501                         if (opcode == 0xfc09)
2502                                 urb = alloc_bulk_urb(hdev, skb);
2503                         else
2504                                 urb = alloc_ctrl_urb(hdev, skb);
2505
2506                         /* When the 0xfc01 command is issued to boot into
2507                          * the operational firmware, it will actually not
2508                          * send a command complete event. To keep the flow
2509                          * control working inject that event here.
2510                          */
2511                         if (opcode == 0xfc01)
2512                                 inject_cmd_complete(hdev, opcode);
2513                 } else {
2514                         urb = alloc_ctrl_urb(hdev, skb);
2515                 }
2516                 if (IS_ERR(urb))
2517                         return PTR_ERR(urb);
2518
2519                 hdev->stat.cmd_tx++;
2520                 return submit_or_queue_tx_urb(hdev, urb);
2521
2522         case HCI_ACLDATA_PKT:
2523                 urb = alloc_bulk_urb(hdev, skb);
2524                 if (IS_ERR(urb))
2525                         return PTR_ERR(urb);
2526
2527                 hdev->stat.acl_tx++;
2528                 return submit_or_queue_tx_urb(hdev, urb);
2529
2530         case HCI_SCODATA_PKT:
2531                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2532                         return -ENODEV;
2533
2534                 urb = alloc_isoc_urb(hdev, skb);
2535                 if (IS_ERR(urb))
2536                         return PTR_ERR(urb);
2537
2538                 hdev->stat.sco_tx++;
2539                 return submit_tx_urb(hdev, urb);
2540
2541         case HCI_ISODATA_PKT:
2542                 urb = alloc_bulk_urb(hdev, skb);
2543                 if (IS_ERR(urb))
2544                         return PTR_ERR(urb);
2545
2546                 return submit_or_queue_tx_urb(hdev, urb);
2547         }
2548
2549         return -EILSEQ;
2550 }
2551
2552 static int btusb_setup_realtek(struct hci_dev *hdev)
2553 {
2554         struct btusb_data *data = hci_get_drvdata(hdev);
2555         int ret;
2556
2557         ret = btrtl_setup_realtek(hdev);
2558
2559         if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2560                 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2561
2562         return ret;
2563 }
2564
2565 /* UHW CR mapping */
2566 #define MTK_BT_MISC             0x70002510
2567 #define MTK_BT_SUBSYS_RST       0x70002610
2568 #define MTK_UDMA_INT_STA_BT     0x74000024
2569 #define MTK_UDMA_INT_STA_BT1    0x74000308
2570 #define MTK_BT_WDT_STATUS       0x740003A0
2571 #define MTK_EP_RST_OPT          0x74011890
2572 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2573 #define MTK_BT_RST_DONE         0x00000100
2574 #define MTK_BT_RESET_WAIT_MS    100
2575 #define MTK_BT_RESET_NUM_TRIES  10
2576
2577 static void btusb_mtk_wmt_recv(struct urb *urb)
2578 {
2579         struct hci_dev *hdev = urb->context;
2580         struct btusb_data *data = hci_get_drvdata(hdev);
2581         struct sk_buff *skb;
2582         int err;
2583
2584         if (urb->status == 0 && urb->actual_length > 0) {
2585                 hdev->stat.byte_rx += urb->actual_length;
2586
2587                 /* WMT event shouldn't be fragmented and the size should be
2588                  * less than HCI_WMT_MAX_EVENT_SIZE.
2589                  */
2590                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2591                 if (!skb) {
2592                         hdev->stat.err_rx++;
2593                         kfree(urb->setup_packet);
2594                         return;
2595                 }
2596
2597                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2598                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2599
2600                 /* When someone waits for the WMT event, the skb is being cloned
2601                  * and being processed the events from there then.
2602                  */
2603                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2604                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2605                         if (!data->evt_skb) {
2606                                 kfree_skb(skb);
2607                                 kfree(urb->setup_packet);
2608                                 return;
2609                         }
2610                 }
2611
2612                 err = hci_recv_frame(hdev, skb);
2613                 if (err < 0) {
2614                         kfree_skb(data->evt_skb);
2615                         data->evt_skb = NULL;
2616                         kfree(urb->setup_packet);
2617                         return;
2618                 }
2619
2620                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2621                                        &data->flags)) {
2622                         /* Barrier to sync with other CPUs */
2623                         smp_mb__after_atomic();
2624                         wake_up_bit(&data->flags,
2625                                     BTUSB_TX_WAIT_VND_EVT);
2626                 }
2627                 kfree(urb->setup_packet);
2628                 return;
2629         } else if (urb->status == -ENOENT) {
2630                 /* Avoid suspend failed when usb_kill_urb */
2631                 return;
2632         }
2633
2634         usb_mark_last_busy(data->udev);
2635
2636         /* The URB complete handler is still called with urb->actual_length = 0
2637          * when the event is not available, so we should keep re-submitting
2638          * URB until WMT event returns, Also, It's necessary to wait some time
2639          * between the two consecutive control URBs to relax the target device
2640          * to generate the event. Otherwise, the WMT event cannot return from
2641          * the device successfully.
2642          */
2643         udelay(500);
2644
2645         usb_anchor_urb(urb, &data->ctrl_anchor);
2646         err = usb_submit_urb(urb, GFP_ATOMIC);
2647         if (err < 0) {
2648                 kfree(urb->setup_packet);
2649                 /* -EPERM: urb is being killed;
2650                  * -ENODEV: device got disconnected
2651                  */
2652                 if (err != -EPERM && err != -ENODEV)
2653                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2654                                    urb, -err);
2655                 usb_unanchor_urb(urb);
2656         }
2657 }
2658
2659 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2660 {
2661         struct btusb_data *data = hci_get_drvdata(hdev);
2662         struct usb_ctrlrequest *dr;
2663         unsigned char *buf;
2664         int err, size = 64;
2665         unsigned int pipe;
2666         struct urb *urb;
2667
2668         urb = usb_alloc_urb(0, GFP_KERNEL);
2669         if (!urb)
2670                 return -ENOMEM;
2671
2672         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2673         if (!dr) {
2674                 usb_free_urb(urb);
2675                 return -ENOMEM;
2676         }
2677
2678         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2679         dr->bRequest     = 1;
2680         dr->wIndex       = cpu_to_le16(0);
2681         dr->wValue       = cpu_to_le16(48);
2682         dr->wLength      = cpu_to_le16(size);
2683
2684         buf = kmalloc(size, GFP_KERNEL);
2685         if (!buf) {
2686                 kfree(dr);
2687                 usb_free_urb(urb);
2688                 return -ENOMEM;
2689         }
2690
2691         pipe = usb_rcvctrlpipe(data->udev, 0);
2692
2693         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2694                              buf, size, btusb_mtk_wmt_recv, hdev);
2695
2696         urb->transfer_flags |= URB_FREE_BUFFER;
2697
2698         usb_anchor_urb(urb, &data->ctrl_anchor);
2699         err = usb_submit_urb(urb, GFP_KERNEL);
2700         if (err < 0) {
2701                 if (err != -EPERM && err != -ENODEV)
2702                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2703                                    urb, -err);
2704                 usb_unanchor_urb(urb);
2705         }
2706
2707         usb_free_urb(urb);
2708
2709         return err;
2710 }
2711
2712 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2713                                   struct btmtk_hci_wmt_params *wmt_params)
2714 {
2715         struct btusb_data *data = hci_get_drvdata(hdev);
2716         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2717         u32 hlen, status = BTMTK_WMT_INVALID;
2718         struct btmtk_hci_wmt_evt *wmt_evt;
2719         struct btmtk_hci_wmt_cmd *wc;
2720         struct btmtk_wmt_hdr *hdr;
2721         int err;
2722
2723         /* Send the WMT command and wait until the WMT event returns */
2724         hlen = sizeof(*hdr) + wmt_params->dlen;
2725         if (hlen > 255)
2726                 return -EINVAL;
2727
2728         wc = kzalloc(hlen, GFP_KERNEL);
2729         if (!wc)
2730                 return -ENOMEM;
2731
2732         hdr = &wc->hdr;
2733         hdr->dir = 1;
2734         hdr->op = wmt_params->op;
2735         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2736         hdr->flag = wmt_params->flag;
2737         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2738
2739         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2740
2741         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2742          * it needs constantly polling control pipe until the host received the
2743          * WMT event, thus, we should require to specifically acquire PM counter
2744          * on the USB to prevent the interface from entering auto suspended
2745          * while WMT cmd/event in progress.
2746          */
2747         err = usb_autopm_get_interface(data->intf);
2748         if (err < 0)
2749                 goto err_free_wc;
2750
2751         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2752
2753         if (err < 0) {
2754                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2755                 usb_autopm_put_interface(data->intf);
2756                 goto err_free_wc;
2757         }
2758
2759         /* Submit control IN URB on demand to process the WMT event */
2760         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2761
2762         usb_autopm_put_interface(data->intf);
2763
2764         if (err < 0)
2765                 goto err_free_wc;
2766
2767         /* The vendor specific WMT commands are all answered by a vendor
2768          * specific event and will have the Command Status or Command
2769          * Complete as with usual HCI command flow control.
2770          *
2771          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2772          * state to be cleared. The driver specific event receive routine
2773          * will clear that state and with that indicate completion of the
2774          * WMT command.
2775          */
2776         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2777                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2778         if (err == -EINTR) {
2779                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2780                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2781                 goto err_free_wc;
2782         }
2783
2784         if (err) {
2785                 bt_dev_err(hdev, "Execution of wmt command timed out");
2786                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2787                 err = -ETIMEDOUT;
2788                 goto err_free_wc;
2789         }
2790
2791         /* Parse and handle the return WMT event */
2792         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2793         if (wmt_evt->whdr.op != hdr->op) {
2794                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2795                            wmt_evt->whdr.op, hdr->op);
2796                 err = -EIO;
2797                 goto err_free_skb;
2798         }
2799
2800         switch (wmt_evt->whdr.op) {
2801         case BTMTK_WMT_SEMAPHORE:
2802                 if (wmt_evt->whdr.flag == 2)
2803                         status = BTMTK_WMT_PATCH_UNDONE;
2804                 else
2805                         status = BTMTK_WMT_PATCH_DONE;
2806                 break;
2807         case BTMTK_WMT_FUNC_CTRL:
2808                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2809                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2810                         status = BTMTK_WMT_ON_DONE;
2811                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2812                         status = BTMTK_WMT_ON_PROGRESS;
2813                 else
2814                         status = BTMTK_WMT_ON_UNDONE;
2815                 break;
2816         case BTMTK_WMT_PATCH_DWNLD:
2817                 if (wmt_evt->whdr.flag == 2)
2818                         status = BTMTK_WMT_PATCH_DONE;
2819                 else if (wmt_evt->whdr.flag == 1)
2820                         status = BTMTK_WMT_PATCH_PROGRESS;
2821                 else
2822                         status = BTMTK_WMT_PATCH_UNDONE;
2823                 break;
2824         }
2825
2826         if (wmt_params->status)
2827                 *wmt_params->status = status;
2828
2829 err_free_skb:
2830         kfree_skb(data->evt_skb);
2831         data->evt_skb = NULL;
2832 err_free_wc:
2833         kfree(wc);
2834         return err;
2835 }
2836
2837 static int btusb_mtk_func_query(struct hci_dev *hdev)
2838 {
2839         struct btmtk_hci_wmt_params wmt_params;
2840         int status, err;
2841         u8 param = 0;
2842
2843         /* Query whether the function is enabled */
2844         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2845         wmt_params.flag = 4;
2846         wmt_params.dlen = sizeof(param);
2847         wmt_params.data = &param;
2848         wmt_params.status = &status;
2849
2850         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2851         if (err < 0) {
2852                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2853                 return err;
2854         }
2855
2856         return status;
2857 }
2858
2859 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2860 {
2861         struct hci_dev *hdev = data->hdev;
2862         int pipe, err;
2863         void *buf;
2864
2865         buf = kzalloc(4, GFP_KERNEL);
2866         if (!buf)
2867                 return -ENOMEM;
2868
2869         put_unaligned_le32(val, buf);
2870
2871         pipe = usb_sndctrlpipe(data->udev, 0);
2872         err = usb_control_msg(data->udev, pipe, 0x02,
2873                               0x5E,
2874                               reg >> 16, reg & 0xffff,
2875                               buf, 4, USB_CTRL_SET_TIMEOUT);
2876         if (err < 0) {
2877                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2878                 goto err_free_buf;
2879         }
2880
2881 err_free_buf:
2882         kfree(buf);
2883
2884         return err;
2885 }
2886
2887 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2888 {
2889         struct hci_dev *hdev = data->hdev;
2890         int pipe, err;
2891         void *buf;
2892
2893         buf = kzalloc(4, GFP_KERNEL);
2894         if (!buf)
2895                 return -ENOMEM;
2896
2897         pipe = usb_rcvctrlpipe(data->udev, 0);
2898         err = usb_control_msg(data->udev, pipe, 0x01,
2899                               0xDE,
2900                               reg >> 16, reg & 0xffff,
2901                               buf, 4, USB_CTRL_SET_TIMEOUT);
2902         if (err < 0) {
2903                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2904                 goto err_free_buf;
2905         }
2906
2907         *val = get_unaligned_le32(buf);
2908         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2909
2910 err_free_buf:
2911         kfree(buf);
2912
2913         return err;
2914 }
2915
2916 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2917 {
2918         int pipe, err, size = sizeof(u32);
2919         void *buf;
2920
2921         buf = kzalloc(size, GFP_KERNEL);
2922         if (!buf)
2923                 return -ENOMEM;
2924
2925         pipe = usb_rcvctrlpipe(data->udev, 0);
2926         err = usb_control_msg(data->udev, pipe, 0x63,
2927                               USB_TYPE_VENDOR | USB_DIR_IN,
2928                               reg >> 16, reg & 0xffff,
2929                               buf, size, USB_CTRL_SET_TIMEOUT);
2930         if (err < 0)
2931                 goto err_free_buf;
2932
2933         *val = get_unaligned_le32(buf);
2934
2935 err_free_buf:
2936         kfree(buf);
2937
2938         return err;
2939 }
2940
2941 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2942 {
2943         return btusb_mtk_reg_read(data, reg, id);
2944 }
2945
2946 static int btusb_mtk_setup(struct hci_dev *hdev)
2947 {
2948         struct btusb_data *data = hci_get_drvdata(hdev);
2949         struct btmtk_hci_wmt_params wmt_params;
2950         ktime_t calltime, delta, rettime;
2951         struct btmtk_tci_sleep tci_sleep;
2952         unsigned long long duration;
2953         struct sk_buff *skb;
2954         const char *fwname;
2955         int err, status;
2956         u32 dev_id;
2957         char fw_bin_name[64];
2958         u32 fw_version = 0;
2959         u8 param;
2960
2961         calltime = ktime_get();
2962
2963         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2964         if (err < 0) {
2965                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2966                 return err;
2967         }
2968
2969         if (!dev_id) {
2970                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2971                 if (err < 0) {
2972                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
2973                         return err;
2974                 }
2975                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2976                 if (err < 0) {
2977                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2978                         return err;
2979                 }
2980         }
2981
2982         switch (dev_id) {
2983         case 0x7663:
2984                 fwname = FIRMWARE_MT7663;
2985                 break;
2986         case 0x7668:
2987                 fwname = FIRMWARE_MT7668;
2988                 break;
2989         case 0x7922:
2990         case 0x7961:
2991                 snprintf(fw_bin_name, sizeof(fw_bin_name),
2992                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2993                          dev_id & 0xffff, (fw_version & 0xff) + 1);
2994                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2995                                                 btusb_mtk_hci_wmt_sync);
2996                 if (err < 0) {
2997                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2998                         return err;
2999                 }
3000
3001                 /* It's Device EndPoint Reset Option Register */
3002                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3003
3004                 /* Enable Bluetooth protocol */
3005                 param = 1;
3006                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3007                 wmt_params.flag = 0;
3008                 wmt_params.dlen = sizeof(param);
3009                 wmt_params.data = &param;
3010                 wmt_params.status = NULL;
3011
3012                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3013                 if (err < 0) {
3014                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3015                         return err;
3016                 }
3017
3018                 hci_set_msft_opcode(hdev, 0xFD30);
3019                 hci_set_aosp_capable(hdev);
3020                 goto done;
3021         default:
3022                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
3023                            dev_id);
3024                 return -ENODEV;
3025         }
3026
3027         /* Query whether the firmware is already download */
3028         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3029         wmt_params.flag = 1;
3030         wmt_params.dlen = 0;
3031         wmt_params.data = NULL;
3032         wmt_params.status = &status;
3033
3034         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3035         if (err < 0) {
3036                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3037                 return err;
3038         }
3039
3040         if (status == BTMTK_WMT_PATCH_DONE) {
3041                 bt_dev_info(hdev, "firmware already downloaded");
3042                 goto ignore_setup_fw;
3043         }
3044
3045         /* Setup a firmware which the device definitely requires */
3046         err = btmtk_setup_firmware(hdev, fwname,
3047                                    btusb_mtk_hci_wmt_sync);
3048         if (err < 0)
3049                 return err;
3050
3051 ignore_setup_fw:
3052         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3053                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3054                                  2000, 5000000);
3055         /* -ETIMEDOUT happens */
3056         if (err < 0)
3057                 return err;
3058
3059         /* The other errors happen in btusb_mtk_func_query */
3060         if (status < 0)
3061                 return status;
3062
3063         if (status == BTMTK_WMT_ON_DONE) {
3064                 bt_dev_info(hdev, "function already on");
3065                 goto ignore_func_on;
3066         }
3067
3068         /* Enable Bluetooth protocol */
3069         param = 1;
3070         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3071         wmt_params.flag = 0;
3072         wmt_params.dlen = sizeof(param);
3073         wmt_params.data = &param;
3074         wmt_params.status = NULL;
3075
3076         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3077         if (err < 0) {
3078                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3079                 return err;
3080         }
3081
3082 ignore_func_on:
3083         /* Apply the low power environment setup */
3084         tci_sleep.mode = 0x5;
3085         tci_sleep.duration = cpu_to_le16(0x640);
3086         tci_sleep.host_duration = cpu_to_le16(0x640);
3087         tci_sleep.host_wakeup_pin = 0;
3088         tci_sleep.time_compensation = 0;
3089
3090         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3091                              HCI_INIT_TIMEOUT);
3092         if (IS_ERR(skb)) {
3093                 err = PTR_ERR(skb);
3094                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3095                 return err;
3096         }
3097         kfree_skb(skb);
3098
3099 done:
3100         rettime = ktime_get();
3101         delta = ktime_sub(rettime, calltime);
3102         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3103
3104         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3105
3106         return 0;
3107 }
3108
3109 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3110 {
3111         struct btmtk_hci_wmt_params wmt_params;
3112         u8 param = 0;
3113         int err;
3114
3115         /* Disable the device */
3116         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3117         wmt_params.flag = 0;
3118         wmt_params.dlen = sizeof(param);
3119         wmt_params.data = &param;
3120         wmt_params.status = NULL;
3121
3122         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3123         if (err < 0) {
3124                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3125                 return err;
3126         }
3127
3128         return 0;
3129 }
3130
3131 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
3132 {
3133         struct btusb_data *data = hci_get_drvdata(hdev);
3134         u32 val;
3135         int err, retry = 0;
3136
3137         /* It's MediaTek specific bluetooth reset mechanism via USB */
3138         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3139                 bt_dev_err(hdev, "last reset failed? Not resetting again");
3140                 return;
3141         }
3142
3143         err = usb_autopm_get_interface(data->intf);
3144         if (err < 0)
3145                 return;
3146
3147         btusb_stop_traffic(data);
3148         usb_kill_anchored_urbs(&data->tx_anchor);
3149
3150         /* It's Device EndPoint Reset Option Register */
3151         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3152         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3153         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3154
3155         /* Reset the bluetooth chip via USB interface. */
3156         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3157         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3158         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3159         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3160         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3161         /* MT7921 need to delay 20ms between toggle reset bit */
3162         msleep(20);
3163         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3164         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3165
3166         /* Poll the register until reset is completed */
3167         do {
3168                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
3169                 if (val & MTK_BT_RST_DONE) {
3170                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
3171                         break;
3172                 }
3173
3174                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
3175                 retry++;
3176                 msleep(MTK_BT_RESET_WAIT_MS);
3177         } while (retry < MTK_BT_RESET_NUM_TRIES);
3178
3179         btusb_mtk_id_get(data, 0x70010200, &val);
3180         if (!val)
3181                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3182
3183         usb_queue_reset_device(data->intf);
3184
3185         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3186 }
3187
3188 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3189 {
3190         struct btusb_data *data = hci_get_drvdata(hdev);
3191         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3192
3193         switch (handle) {
3194         case 0xfc6f:            /* Firmware dump from device */
3195                 /* When the firmware hangs, the device can no longer
3196                  * suspend and thus disable auto-suspend.
3197                  */
3198                 usb_disable_autosuspend(data->udev);
3199                 fallthrough;
3200         case 0x05ff:            /* Firmware debug logging 1 */
3201         case 0x05fe:            /* Firmware debug logging 2 */
3202                 return hci_recv_diag(hdev, skb);
3203         }
3204
3205         return hci_recv_frame(hdev, skb);
3206 }
3207
3208 #ifdef CONFIG_PM
3209 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3210 static int marvell_config_oob_wake(struct hci_dev *hdev)
3211 {
3212         struct sk_buff *skb;
3213         struct btusb_data *data = hci_get_drvdata(hdev);
3214         struct device *dev = &data->udev->dev;
3215         u16 pin, gap, opcode;
3216         int ret;
3217         u8 cmd[5];
3218
3219         /* Move on if no wakeup pin specified */
3220         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3221             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3222                 return 0;
3223
3224         /* Vendor specific command to configure a GPIO as wake-up pin */
3225         opcode = hci_opcode_pack(0x3F, 0x59);
3226         cmd[0] = opcode & 0xFF;
3227         cmd[1] = opcode >> 8;
3228         cmd[2] = 2; /* length of parameters that follow */
3229         cmd[3] = pin;
3230         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3231
3232         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3233         if (!skb) {
3234                 bt_dev_err(hdev, "%s: No memory", __func__);
3235                 return -ENOMEM;
3236         }
3237
3238         skb_put_data(skb, cmd, sizeof(cmd));
3239         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3240
3241         ret = btusb_send_frame(hdev, skb);
3242         if (ret) {
3243                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3244                 kfree_skb(skb);
3245                 return ret;
3246         }
3247
3248         return 0;
3249 }
3250 #endif
3251
3252 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3253                                     const bdaddr_t *bdaddr)
3254 {
3255         struct sk_buff *skb;
3256         u8 buf[8];
3257         long ret;
3258
3259         buf[0] = 0xfe;
3260         buf[1] = sizeof(bdaddr_t);
3261         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3262
3263         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3264         if (IS_ERR(skb)) {
3265                 ret = PTR_ERR(skb);
3266                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3267                            ret);
3268                 return ret;
3269         }
3270         kfree_skb(skb);
3271
3272         return 0;
3273 }
3274
3275 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3276                                     const bdaddr_t *bdaddr)
3277 {
3278         struct sk_buff *skb;
3279         u8 buf[10];
3280         long ret;
3281
3282         buf[0] = 0x01;
3283         buf[1] = 0x01;
3284         buf[2] = 0x00;
3285         buf[3] = sizeof(bdaddr_t);
3286         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3287
3288         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3289         if (IS_ERR(skb)) {
3290                 ret = PTR_ERR(skb);
3291                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3292                 return ret;
3293         }
3294         kfree_skb(skb);
3295
3296         return 0;
3297 }
3298
3299 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3300                                 const bdaddr_t *bdaddr)
3301 {
3302         struct sk_buff *skb;
3303         u8 buf[6];
3304         long ret;
3305
3306         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3307
3308         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3309                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3310         if (IS_ERR(skb)) {
3311                 ret = PTR_ERR(skb);
3312                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3313                 return ret;
3314         }
3315         kfree_skb(skb);
3316
3317         return 0;
3318 }
3319
3320 #define QCA_MEMDUMP_ACL_HANDLE 0x2EDD
3321 #define QCA_MEMDUMP_SIZE_MAX  0x100000
3322 #define QCA_MEMDUMP_VSE_CLASS 0x01
3323 #define QCA_MEMDUMP_MSG_TYPE 0x08
3324 #define QCA_MEMDUMP_PKT_SIZE 248
3325 #define QCA_LAST_SEQUENCE_NUM 0xffff
3326
3327 struct qca_dump_hdr {
3328         u8 vse_class;
3329         u8 msg_type;
3330         __le16 seqno;
3331         u8 reserved;
3332         union {
3333                 u8 data[0];
3334                 struct {
3335                         __le32 ram_dump_size;
3336                         u8 data0[0];
3337                 } __packed;
3338         };
3339 } __packed;
3340
3341
3342 static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb)
3343 {
3344         char buf[128];
3345         struct btusb_data *btdata = hci_get_drvdata(hdev);
3346
3347         snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n",
3348                         btdata->qca_dump.controller_id);
3349         skb_put_data(skb, buf, strlen(buf));
3350
3351         snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n",
3352                         btdata->qca_dump.fw_version);
3353         skb_put_data(skb, buf, strlen(buf));
3354
3355         snprintf(buf, sizeof(buf), "Driver: %s\nVendor: qca\n",
3356                         btusb_driver.name);
3357         skb_put_data(skb, buf, strlen(buf));
3358
3359         snprintf(buf, sizeof(buf), "VID: 0x%x\nPID:0x%x\n",
3360                         btdata->qca_dump.id_vendor, btdata->qca_dump.id_product);
3361         skb_put_data(skb, buf, strlen(buf));
3362
3363         snprintf(buf, sizeof(buf), "Lmp Subversion: 0x%x\n",
3364                         hdev->lmp_subver);
3365         skb_put_data(skb, buf, strlen(buf));
3366 }
3367
3368 static void btusb_coredump_qca(struct hci_dev *hdev)
3369 {
3370         static const u8 param[] = { 0x26 };
3371         struct sk_buff *skb;
3372
3373         skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT);
3374         if (IS_ERR(skb))
3375                 bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb));
3376         kfree_skb(skb);
3377 }
3378
3379 /*
3380  * ==0: not a dump pkt.
3381  * < 0: fails to handle a dump pkt
3382  * > 0: otherwise.
3383  */
3384 static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3385 {
3386         int ret = 1;
3387         u8 pkt_type;
3388         u8 *sk_ptr;
3389         unsigned int sk_len;
3390         u16 seqno;
3391         u32 dump_size;
3392
3393         struct hci_event_hdr *event_hdr;
3394         struct hci_acl_hdr *acl_hdr;
3395         struct qca_dump_hdr *dump_hdr;
3396         struct btusb_data *btdata = hci_get_drvdata(hdev);
3397         struct usb_device *udev = btdata->udev;
3398
3399         pkt_type = hci_skb_pkt_type(skb);
3400         sk_ptr = skb->data;
3401         sk_len = skb->len;
3402
3403         if (pkt_type == HCI_ACLDATA_PKT) {
3404                 acl_hdr = hci_acl_hdr(skb);
3405                 if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE)
3406                         return 0;
3407                 sk_ptr += HCI_ACL_HDR_SIZE;
3408                 sk_len -= HCI_ACL_HDR_SIZE;
3409                 event_hdr = (struct hci_event_hdr *)sk_ptr;
3410         } else {
3411                 event_hdr = hci_event_hdr(skb);
3412         }
3413
3414         if ((event_hdr->evt != HCI_VENDOR_PKT)
3415                 || (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
3416                 return 0;
3417
3418         sk_ptr += HCI_EVENT_HDR_SIZE;
3419         sk_len -= HCI_EVENT_HDR_SIZE;
3420
3421         dump_hdr = (struct qca_dump_hdr *)sk_ptr;
3422         if ((sk_len < offsetof(struct qca_dump_hdr, data))
3423                 || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS)
3424             || (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
3425                 return 0;
3426
3427         /*it is dump pkt now*/
3428         seqno = le16_to_cpu(dump_hdr->seqno);
3429         if (seqno == 0) {
3430                 set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3431                 dump_size = le32_to_cpu(dump_hdr->ram_dump_size);
3432                 if (!dump_size || (dump_size > QCA_MEMDUMP_SIZE_MAX)) {
3433                         ret = -EILSEQ;
3434                         bt_dev_err(hdev, "Invalid memdump size(%u)",
3435                                    dump_size);
3436                         goto out;
3437                 }
3438
3439                 ret = hci_devcd_init(hdev, dump_size);
3440                 if (ret < 0) {
3441                         bt_dev_err(hdev, "memdump init error(%d)", ret);
3442                         goto out;
3443                 }
3444
3445                 btdata->qca_dump.ram_dump_size = dump_size;
3446                 btdata->qca_dump.ram_dump_seqno = 0;
3447                 sk_ptr += offsetof(struct qca_dump_hdr, data0);
3448                 sk_len -= offsetof(struct qca_dump_hdr, data0);
3449
3450                 usb_disable_autosuspend(udev);
3451                 bt_dev_info(hdev, "%s memdump size(%u)\n",
3452                             (pkt_type == HCI_ACLDATA_PKT) ? "ACL" : "event",
3453                             dump_size);
3454         } else {
3455                 sk_ptr += offsetof(struct qca_dump_hdr, data);
3456                 sk_len -= offsetof(struct qca_dump_hdr, data);
3457         }
3458
3459         if (!btdata->qca_dump.ram_dump_size) {
3460                 ret = -EINVAL;
3461                 bt_dev_err(hdev, "memdump is not active");
3462                 goto out;
3463         }
3464
3465         if ((seqno > btdata->qca_dump.ram_dump_seqno + 1) && (seqno != QCA_LAST_SEQUENCE_NUM)) {
3466                 dump_size = QCA_MEMDUMP_PKT_SIZE * (seqno - btdata->qca_dump.ram_dump_seqno - 1);
3467                 hci_devcd_append_pattern(hdev, 0x0, dump_size);
3468                 bt_dev_err(hdev,
3469                            "expected memdump seqno(%u) is not received(%u)\n",
3470                            btdata->qca_dump.ram_dump_seqno, seqno);
3471                 btdata->qca_dump.ram_dump_seqno = seqno;
3472                 kfree_skb(skb);
3473                 return ret;
3474         }
3475
3476         skb_pull(skb, skb->len - sk_len);
3477         hci_devcd_append(hdev, skb);
3478         btdata->qca_dump.ram_dump_seqno++;
3479         if (seqno == QCA_LAST_SEQUENCE_NUM) {
3480                 bt_dev_info(hdev,
3481                                 "memdump done: pkts(%u), total(%u)\n",
3482                                 btdata->qca_dump.ram_dump_seqno, btdata->qca_dump.ram_dump_size);
3483
3484                 hci_devcd_complete(hdev);
3485                 goto out;
3486         }
3487         return ret;
3488
3489 out:
3490         if (btdata->qca_dump.ram_dump_size)
3491                 usb_enable_autosuspend(udev);
3492         btdata->qca_dump.ram_dump_size = 0;
3493         btdata->qca_dump.ram_dump_seqno = 0;
3494         clear_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3495
3496         if (ret < 0)
3497                 kfree_skb(skb);
3498         return ret;
3499 }
3500
3501 static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb)
3502 {
3503         if (handle_dump_pkt_qca(hdev, skb))
3504                 return 0;
3505         return hci_recv_frame(hdev, skb);
3506 }
3507
3508 static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3509 {
3510         if (handle_dump_pkt_qca(hdev, skb))
3511                 return 0;
3512         return hci_recv_frame(hdev, skb);
3513 }
3514
3515
3516 #define QCA_DFU_PACKET_LEN      4096
3517
3518 #define QCA_GET_TARGET_VERSION  0x09
3519 #define QCA_CHECK_STATUS        0x05
3520 #define QCA_DFU_DOWNLOAD        0x01
3521
3522 #define QCA_SYSCFG_UPDATED      0x40
3523 #define QCA_PATCH_UPDATED       0x80
3524 #define QCA_DFU_TIMEOUT         3000
3525 #define QCA_FLAG_MULTI_NVM      0x80
3526 #define QCA_BT_RESET_WAIT_MS    100
3527
3528 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3529 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3530
3531 struct qca_version {
3532         __le32  rom_version;
3533         __le32  patch_version;
3534         __le32  ram_version;
3535         __u8    chip_id;
3536         __u8    platform_id;
3537         __le16  flag;
3538         __u8    reserved[4];
3539 } __packed;
3540
3541 struct qca_rampatch_version {
3542         __le16  rom_version_high;
3543         __le16  rom_version_low;
3544         __le16  patch_version;
3545 } __packed;
3546
3547 struct qca_device_info {
3548         u32     rom_version;
3549         u8      rampatch_hdr;   /* length of header in rampatch */
3550         u8      nvm_hdr;        /* length of header in NVM */
3551         u8      ver_offset;     /* offset of version structure in rampatch */
3552 };
3553
3554 static const struct qca_device_info qca_devices_table[] = {
3555         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3556         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3557         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3558         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3559         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3560         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3561         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3562         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3563         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3564         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3565 };
3566
3567 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3568                                      void *data, u16 size)
3569 {
3570         int pipe, err;
3571         u8 *buf;
3572
3573         buf = kmalloc(size, GFP_KERNEL);
3574         if (!buf)
3575                 return -ENOMEM;
3576
3577         /* Found some of USB hosts have IOT issues with ours so that we should
3578          * not wait until HCI layer is ready.
3579          */
3580         pipe = usb_rcvctrlpipe(udev, 0);
3581         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3582                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3583         if (err < 0) {
3584                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3585                 goto done;
3586         }
3587
3588         memcpy(data, buf, size);
3589
3590 done:
3591         kfree(buf);
3592
3593         return err;
3594 }
3595
3596 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3597                                        const struct firmware *firmware,
3598                                        size_t hdr_size)
3599 {
3600         struct btusb_data *btdata = hci_get_drvdata(hdev);
3601         struct usb_device *udev = btdata->udev;
3602         size_t count, size, sent = 0;
3603         int pipe, len, err;
3604         u8 *buf;
3605
3606         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3607         if (!buf)
3608                 return -ENOMEM;
3609
3610         count = firmware->size;
3611
3612         size = min_t(size_t, count, hdr_size);
3613         memcpy(buf, firmware->data, size);
3614
3615         /* USB patches should go down to controller through USB path
3616          * because binary format fits to go down through USB channel.
3617          * USB control path is for patching headers and USB bulk is for
3618          * patch body.
3619          */
3620         pipe = usb_sndctrlpipe(udev, 0);
3621         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3622                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3623         if (err < 0) {
3624                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3625                 goto done;
3626         }
3627
3628         sent += size;
3629         count -= size;
3630
3631         /* ep2 need time to switch from function acl to function dfu,
3632          * so we add 20ms delay here.
3633          */
3634         msleep(20);
3635
3636         while (count) {
3637                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3638
3639                 memcpy(buf, firmware->data + sent, size);
3640
3641                 pipe = usb_sndbulkpipe(udev, 0x02);
3642                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3643                                    QCA_DFU_TIMEOUT);
3644                 if (err < 0) {
3645                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3646                                    sent, firmware->size, err);
3647                         break;
3648                 }
3649
3650                 if (size != len) {
3651                         bt_dev_err(hdev, "Failed to get bulk buffer");
3652                         err = -EILSEQ;
3653                         break;
3654                 }
3655
3656                 sent  += size;
3657                 count -= size;
3658         }
3659
3660 done:
3661         kfree(buf);
3662         return err;
3663 }
3664
3665 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3666                                          struct qca_version *ver,
3667                                          const struct qca_device_info *info)
3668 {
3669         struct qca_rampatch_version *rver;
3670         const struct firmware *fw;
3671         u32 ver_rom, ver_patch, rver_rom;
3672         u16 rver_rom_low, rver_rom_high, rver_patch;
3673         char fwname[64];
3674         int err;
3675
3676         ver_rom = le32_to_cpu(ver->rom_version);
3677         ver_patch = le32_to_cpu(ver->patch_version);
3678
3679         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3680
3681         err = request_firmware(&fw, fwname, &hdev->dev);
3682         if (err) {
3683                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3684                            fwname, err);
3685                 return err;
3686         }
3687
3688         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3689
3690         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3691         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3692         rver_patch = le16_to_cpu(rver->patch_version);
3693
3694         if (ver_rom & ~0xffffU) {
3695                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3696                 rver_rom = rver_rom_high << 16 | rver_rom_low;
3697         } else {
3698                 rver_rom = rver_rom_low;
3699         }
3700
3701         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3702                     "firmware rome 0x%x build 0x%x",
3703                     rver_rom, rver_patch, ver_rom, ver_patch);
3704
3705         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3706                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3707                 err = -EINVAL;
3708                 goto done;
3709         }
3710
3711         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3712
3713 done:
3714         release_firmware(fw);
3715
3716         return err;
3717 }
3718
3719 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3720                                         const struct qca_version *ver)
3721 {
3722         u32 rom_version = le32_to_cpu(ver->rom_version);
3723         u16 flag = le16_to_cpu(ver->flag);
3724
3725         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3726                 /* The board_id should be split into two bytes
3727                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3728                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3729                  * we have several platforms, and platform IDs are continuously added
3730                  * Platform ID:
3731                  * 0x00 is for Mobile
3732                  * 0x01 is for X86
3733                  * 0x02 is for Automotive
3734                  * 0x03 is for Consumer electronic
3735                  */
3736                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3737                 const char *variant;
3738
3739                 switch (le32_to_cpu(ver->ram_version)) {
3740                 case WCN6855_2_0_RAM_VERSION_GF:
3741                 case WCN6855_2_1_RAM_VERSION_GF:
3742                         variant = "_gf";
3743                         break;
3744                 default:
3745                         variant = "";
3746                         break;
3747                 }
3748
3749                 if (board_id == 0) {
3750                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3751                                 rom_version, variant);
3752                 } else {
3753                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3754                                 rom_version, variant, board_id);
3755                 }
3756         } else {
3757                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3758                         rom_version);
3759         }
3760
3761 }
3762
3763 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3764                                     struct qca_version *ver,
3765                                     const struct qca_device_info *info)
3766 {
3767         const struct firmware *fw;
3768         char fwname[64];
3769         int err;
3770
3771         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3772
3773         err = request_firmware(&fw, fwname, &hdev->dev);
3774         if (err) {
3775                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3776                            fwname, err);
3777                 return err;
3778         }
3779
3780         bt_dev_info(hdev, "using NVM file: %s", fwname);
3781
3782         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3783
3784         release_firmware(fw);
3785
3786         return err;
3787 }
3788
3789 /* identify the ROM version and check whether patches are needed */
3790 static bool btusb_qca_need_patch(struct usb_device *udev)
3791 {
3792         struct qca_version ver;
3793
3794         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3795                                       sizeof(ver)) < 0)
3796                 return false;
3797         /* only low ROM versions need patches */
3798         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3799 }
3800
3801 static int btusb_setup_qca(struct hci_dev *hdev)
3802 {
3803         struct btusb_data *btdata = hci_get_drvdata(hdev);
3804         struct usb_device *udev = btdata->udev;
3805         const struct qca_device_info *info = NULL;
3806         struct qca_version ver;
3807         u32 ver_rom;
3808         u8 status;
3809         int i, err;
3810
3811         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3812                                         sizeof(ver));
3813         if (err < 0)
3814                 return err;
3815
3816         ver_rom = le32_to_cpu(ver.rom_version);
3817
3818         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3819                 if (ver_rom == qca_devices_table[i].rom_version)
3820                         info = &qca_devices_table[i];
3821         }
3822         if (!info) {
3823                 /* If the rom_version is not matched in the qca_devices_table
3824                  * and the high ROM version is not zero, we assume this chip no
3825                  * need to load the rampatch and nvm.
3826                  */
3827                 if (ver_rom & ~0xffffU)
3828                         return 0;
3829
3830                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3831                 return -ENODEV;
3832         }
3833
3834         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3835                                         sizeof(status));
3836         if (err < 0)
3837                 return err;
3838
3839         if (!(status & QCA_PATCH_UPDATED)) {
3840                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3841                 if (err < 0)
3842                         return err;
3843         }
3844
3845         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3846                                         sizeof(ver));
3847         if (err < 0)
3848                 return err;
3849
3850         btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version);
3851         btdata->qca_dump.controller_id = le32_to_cpu(ver.rom_version);
3852
3853         if (!(status & QCA_SYSCFG_UPDATED)) {
3854                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3855                 if (err < 0)
3856                         return err;
3857
3858                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3859                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3860                  * cause potential enable failure.
3861                  */
3862                 if (info->rom_version >= 0x00130201)
3863                         msleep(QCA_BT_RESET_WAIT_MS);
3864         }
3865
3866         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3867          * work with the likes of HSP/HFP mSBC.
3868          */
3869         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3870
3871         return 0;
3872 }
3873
3874 static inline int __set_diag_interface(struct hci_dev *hdev)
3875 {
3876         struct btusb_data *data = hci_get_drvdata(hdev);
3877         struct usb_interface *intf = data->diag;
3878         int i;
3879
3880         if (!data->diag)
3881                 return -ENODEV;
3882
3883         data->diag_tx_ep = NULL;
3884         data->diag_rx_ep = NULL;
3885
3886         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3887                 struct usb_endpoint_descriptor *ep_desc;
3888
3889                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3890
3891                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3892                         data->diag_tx_ep = ep_desc;
3893                         continue;
3894                 }
3895
3896                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3897                         data->diag_rx_ep = ep_desc;
3898                         continue;
3899                 }
3900         }
3901
3902         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3903                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3904                 return -ENODEV;
3905         }
3906
3907         return 0;
3908 }
3909
3910 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3911 {
3912         struct btusb_data *data = hci_get_drvdata(hdev);
3913         struct sk_buff *skb;
3914         struct urb *urb;
3915         unsigned int pipe;
3916
3917         if (!data->diag_tx_ep)
3918                 return ERR_PTR(-ENODEV);
3919
3920         urb = usb_alloc_urb(0, GFP_KERNEL);
3921         if (!urb)
3922                 return ERR_PTR(-ENOMEM);
3923
3924         skb = bt_skb_alloc(2, GFP_KERNEL);
3925         if (!skb) {
3926                 usb_free_urb(urb);
3927                 return ERR_PTR(-ENOMEM);
3928         }
3929
3930         skb_put_u8(skb, 0xf0);
3931         skb_put_u8(skb, enable);
3932
3933         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3934
3935         usb_fill_bulk_urb(urb, data->udev, pipe,
3936                           skb->data, skb->len, btusb_tx_complete, skb);
3937
3938         skb->dev = (void *)hdev;
3939
3940         return urb;
3941 }
3942
3943 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3944 {
3945         struct btusb_data *data = hci_get_drvdata(hdev);
3946         struct urb *urb;
3947
3948         if (!data->diag)
3949                 return -ENODEV;
3950
3951         if (!test_bit(HCI_RUNNING, &hdev->flags))
3952                 return -ENETDOWN;
3953
3954         urb = alloc_diag_urb(hdev, enable);
3955         if (IS_ERR(urb))
3956                 return PTR_ERR(urb);
3957
3958         return submit_or_queue_tx_urb(hdev, urb);
3959 }
3960
3961 #ifdef CONFIG_PM
3962 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3963 {
3964         struct btusb_data *data = priv;
3965
3966         pm_wakeup_event(&data->udev->dev, 0);
3967         pm_system_wakeup();
3968
3969         /* Disable only if not already disabled (keep it balanced) */
3970         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3971                 disable_irq_nosync(irq);
3972                 disable_irq_wake(irq);
3973         }
3974         return IRQ_HANDLED;
3975 }
3976
3977 static const struct of_device_id btusb_match_table[] = {
3978         { .compatible = "usb1286,204e" },
3979         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3980         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3981         { }
3982 };
3983 MODULE_DEVICE_TABLE(of, btusb_match_table);
3984
3985 /* Use an oob wakeup pin? */
3986 static int btusb_config_oob_wake(struct hci_dev *hdev)
3987 {
3988         struct btusb_data *data = hci_get_drvdata(hdev);
3989         struct device *dev = &data->udev->dev;
3990         int irq, ret;
3991
3992         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3993
3994         if (!of_match_device(btusb_match_table, dev))
3995                 return 0;
3996
3997         /* Move on if no IRQ specified */
3998         irq = of_irq_get_byname(dev->of_node, "wakeup");
3999         if (irq <= 0) {
4000                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4001                 return 0;
4002         }
4003
4004         irq_set_status_flags(irq, IRQ_NOAUTOEN);
4005         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4006                                0, "OOB Wake-on-BT", data);
4007         if (ret) {
4008                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4009                 return ret;
4010         }
4011
4012         ret = device_init_wakeup(dev, true);
4013         if (ret) {
4014                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4015                 return ret;
4016         }
4017
4018         data->oob_wake_irq = irq;
4019         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4020         return 0;
4021 }
4022 #endif
4023
4024 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4025 {
4026         if (dmi_check_system(btusb_needs_reset_resume_table))
4027                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4028 }
4029
4030 static bool btusb_wakeup(struct hci_dev *hdev)
4031 {
4032         struct btusb_data *data = hci_get_drvdata(hdev);
4033
4034         return device_may_wakeup(&data->udev->dev);
4035 }
4036
4037 static int btusb_shutdown_qca(struct hci_dev *hdev)
4038 {
4039         struct sk_buff *skb;
4040
4041         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4042         if (IS_ERR(skb)) {
4043                 bt_dev_err(hdev, "HCI reset during shutdown failed");
4044                 return PTR_ERR(skb);
4045         }
4046         kfree_skb(skb);
4047
4048         return 0;
4049 }
4050
4051 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
4052                                     size_t count, loff_t *ppos)
4053 {
4054         struct btusb_data *data = file->private_data;
4055         char buf[3];
4056
4057         buf[0] = data->poll_sync ? 'Y' : 'N';
4058         buf[1] = '\n';
4059         buf[2] = '\0';
4060         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
4061 }
4062
4063 static ssize_t force_poll_sync_write(struct file *file,
4064                                      const char __user *user_buf,
4065                                      size_t count, loff_t *ppos)
4066 {
4067         struct btusb_data *data = file->private_data;
4068         bool enable;
4069         int err;
4070
4071         err = kstrtobool_from_user(user_buf, count, &enable);
4072         if (err)
4073                 return err;
4074
4075         /* Only allow changes while the adapter is down */
4076         if (test_bit(HCI_UP, &data->hdev->flags))
4077                 return -EPERM;
4078
4079         if (data->poll_sync == enable)
4080                 return -EALREADY;
4081
4082         data->poll_sync = enable;
4083
4084         return count;
4085 }
4086
4087 static const struct file_operations force_poll_sync_fops = {
4088         .open           = simple_open,
4089         .read           = force_poll_sync_read,
4090         .write          = force_poll_sync_write,
4091         .llseek         = default_llseek,
4092 };
4093
4094 static int btusb_probe(struct usb_interface *intf,
4095                        const struct usb_device_id *id)
4096 {
4097         struct usb_endpoint_descriptor *ep_desc;
4098         struct gpio_desc *reset_gpio;
4099         struct btusb_data *data;
4100         struct hci_dev *hdev;
4101         unsigned ifnum_base;
4102         int i, err, priv_size;
4103
4104         BT_DBG("intf %p id %p", intf, id);
4105
4106         if ((id->driver_info & BTUSB_IFNUM_2) &&
4107             (intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
4108             (intf->cur_altsetting->desc.bInterfaceNumber != 2))
4109                 return -ENODEV;
4110
4111         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4112
4113         if (!id->driver_info) {
4114                 const struct usb_device_id *match;
4115
4116                 match = usb_match_id(intf, blacklist_table);
4117                 if (match)
4118                         id = match;
4119         }
4120
4121         if (id->driver_info == BTUSB_IGNORE)
4122                 return -ENODEV;
4123
4124         if (id->driver_info & BTUSB_ATH3012) {
4125                 struct usb_device *udev = interface_to_usbdev(intf);
4126
4127                 /* Old firmware would otherwise let ath3k driver load
4128                  * patch and sysconfig files
4129                  */
4130                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4131                     !btusb_qca_need_patch(udev))
4132                         return -ENODEV;
4133         }
4134
4135         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4136         if (!data)
4137                 return -ENOMEM;
4138
4139         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4140                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4141
4142                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4143                         data->intr_ep = ep_desc;
4144                         continue;
4145                 }
4146
4147                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4148                         data->bulk_tx_ep = ep_desc;
4149                         continue;
4150                 }
4151
4152                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4153                         data->bulk_rx_ep = ep_desc;
4154                         continue;
4155                 }
4156         }
4157
4158         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4159                 return -ENODEV;
4160
4161         if (id->driver_info & BTUSB_AMP) {
4162                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4163                 data->cmdreq = 0x2b;
4164         } else {
4165                 data->cmdreq_type = USB_TYPE_CLASS;
4166                 data->cmdreq = 0x00;
4167         }
4168
4169         data->udev = interface_to_usbdev(intf);
4170         data->intf = intf;
4171
4172         INIT_WORK(&data->work, btusb_work);
4173         INIT_WORK(&data->waker, btusb_waker);
4174         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
4175
4176         skb_queue_head_init(&data->acl_q);
4177
4178         init_usb_anchor(&data->deferred);
4179         init_usb_anchor(&data->tx_anchor);
4180         spin_lock_init(&data->txlock);
4181
4182         init_usb_anchor(&data->intr_anchor);
4183         init_usb_anchor(&data->bulk_anchor);
4184         init_usb_anchor(&data->isoc_anchor);
4185         init_usb_anchor(&data->diag_anchor);
4186         init_usb_anchor(&data->ctrl_anchor);
4187         spin_lock_init(&data->rxlock);
4188
4189         priv_size = 0;
4190
4191         data->recv_event = hci_recv_frame;
4192         data->recv_bulk = btusb_recv_bulk;
4193
4194         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4195                 /* Allocate extra space for Intel device */
4196                 priv_size += sizeof(struct btintel_data);
4197
4198                 /* Override the rx handlers */
4199                 data->recv_event = btusb_recv_event_intel;
4200                 data->recv_bulk = btusb_recv_bulk_intel;
4201         } else if (id->driver_info & BTUSB_REALTEK) {
4202                 /* Allocate extra space for Realtek device */
4203                 priv_size += sizeof(struct btrealtek_data);
4204         }
4205
4206         data->recv_acl = hci_recv_frame;
4207
4208         hdev = hci_alloc_dev_priv(priv_size);
4209         if (!hdev)
4210                 return -ENOMEM;
4211
4212         hdev->bus = HCI_USB;
4213         hci_set_drvdata(hdev, data);
4214
4215         if (id->driver_info & BTUSB_AMP)
4216                 hdev->dev_type = HCI_AMP;
4217         else
4218                 hdev->dev_type = HCI_PRIMARY;
4219
4220         data->hdev = hdev;
4221
4222         SET_HCIDEV_DEV(hdev, &intf->dev);
4223
4224         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4225                                         GPIOD_OUT_LOW);
4226         if (IS_ERR(reset_gpio)) {
4227                 err = PTR_ERR(reset_gpio);
4228                 goto out_free_dev;
4229         } else if (reset_gpio) {
4230                 data->reset_gpio = reset_gpio;
4231         }
4232
4233         hdev->open   = btusb_open;
4234         hdev->close  = btusb_close;
4235         hdev->flush  = btusb_flush;
4236         hdev->send   = btusb_send_frame;
4237         hdev->notify = btusb_notify;
4238         hdev->wakeup = btusb_wakeup;
4239
4240 #ifdef CONFIG_PM
4241         err = btusb_config_oob_wake(hdev);
4242         if (err)
4243                 goto out_free_dev;
4244
4245         /* Marvell devices may need a specific chip configuration */
4246         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4247                 err = marvell_config_oob_wake(hdev);
4248                 if (err)
4249                         goto out_free_dev;
4250         }
4251 #endif
4252         if (id->driver_info & BTUSB_CW6622)
4253                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4254
4255         if (id->driver_info & BTUSB_BCM2045)
4256                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4257
4258         if (id->driver_info & BTUSB_BCM92035)
4259                 hdev->setup = btusb_setup_bcm92035;
4260
4261         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4262             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4263                 hdev->manufacturer = 15;
4264                 hdev->setup = btbcm_setup_patchram;
4265                 hdev->set_diag = btusb_bcm_set_diag;
4266                 hdev->set_bdaddr = btbcm_set_bdaddr;
4267
4268                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4269                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4270         }
4271
4272         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4273             (id->driver_info & BTUSB_BCM_APPLE)) {
4274                 hdev->manufacturer = 15;
4275                 hdev->setup = btbcm_setup_apple;
4276                 hdev->set_diag = btusb_bcm_set_diag;
4277
4278                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4279                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4280         }
4281
4282         /* Combined Intel Device setup to support multiple setup routine */
4283         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4284                 err = btintel_configure_setup(hdev, btusb_driver.name);
4285                 if (err)
4286                         goto out_free_dev;
4287
4288                 /* Transport specific configuration */
4289                 hdev->send = btusb_send_frame_intel;
4290                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4291
4292                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4293                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4294
4295                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4296                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4297
4298                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4299                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4300         }
4301
4302         if (id->driver_info & BTUSB_MARVELL)
4303                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4304
4305         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4306             (id->driver_info & BTUSB_MEDIATEK)) {
4307                 hdev->setup = btusb_mtk_setup;
4308                 hdev->shutdown = btusb_mtk_shutdown;
4309                 hdev->manufacturer = 70;
4310                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
4311                 hdev->set_bdaddr = btmtk_set_bdaddr;
4312                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4313                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4314                 data->recv_acl = btusb_recv_acl_mtk;
4315         }
4316
4317         if (id->driver_info & BTUSB_SWAVE) {
4318                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4319                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4320         }
4321
4322         if (id->driver_info & BTUSB_INTEL_BOOT) {
4323                 hdev->manufacturer = 2;
4324                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4325         }
4326
4327         if (id->driver_info & BTUSB_ATH3012) {
4328                 data->setup_on_usb = btusb_setup_qca;
4329                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4330                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4331                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4332         }
4333
4334         if (id->driver_info & BTUSB_QCA_ROME) {
4335                 data->setup_on_usb = btusb_setup_qca;
4336                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4337                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4338                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4339                 btusb_check_needs_reset_resume(intf);
4340         }
4341
4342         if (id->driver_info & BTUSB_QCA_WCN6855) {
4343                 data->qca_dump.id_vendor = id->idVendor;
4344                 data->qca_dump.id_product = id->idProduct;
4345                 data->recv_event = btusb_recv_evt_qca;
4346                 data->recv_acl = btusb_recv_acl_qca;
4347                 hci_devcd_register(hdev, btusb_coredump_qca, btusb_dump_hdr_qca, NULL);
4348                 data->setup_on_usb = btusb_setup_qca;
4349                 hdev->shutdown = btusb_shutdown_qca;
4350                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4351                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4352                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4353                 hci_set_msft_opcode(hdev, 0xFD70);
4354         }
4355
4356         if (id->driver_info & BTUSB_AMP) {
4357                 /* AMP controllers do not support SCO packets */
4358                 data->isoc = NULL;
4359         } else {
4360                 /* Interface orders are hardcoded in the specification */
4361                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4362                 data->isoc_ifnum = ifnum_base + 1;
4363         }
4364
4365         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4366             (id->driver_info & BTUSB_REALTEK)) {
4367                 hdev->setup = btusb_setup_realtek;
4368                 hdev->shutdown = btrtl_shutdown_realtek;
4369                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4370
4371                 /* Realtek devices need to set remote wakeup on auto-suspend */
4372                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4373                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4374         }
4375
4376         if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4377                 /* Support is advertised, but not implemented */
4378                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4379                 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
4380                 set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
4381                 set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
4382         }
4383
4384         if (!reset)
4385                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4386
4387         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4388                 if (!disable_scofix)
4389                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4390         }
4391
4392         if (id->driver_info & BTUSB_BROKEN_ISOC)
4393                 data->isoc = NULL;
4394
4395         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4396                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4397
4398         if (id->driver_info & BTUSB_VALID_LE_STATES)
4399                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4400
4401         if (id->driver_info & BTUSB_DIGIANSWER) {
4402                 data->cmdreq_type = USB_TYPE_VENDOR;
4403                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4404         }
4405
4406         if (id->driver_info & BTUSB_CSR) {
4407                 struct usb_device *udev = data->udev;
4408                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4409
4410                 /* Old firmware would otherwise execute USB reset */
4411                 if (bcdDevice < 0x117)
4412                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4413
4414                 /* This must be set first in case we disable it for fakes */
4415                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4416
4417                 /* Fake CSR devices with broken commands */
4418                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4419                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4420                         hdev->setup = btusb_setup_csr;
4421         }
4422
4423         if (id->driver_info & BTUSB_SNIFFER) {
4424                 struct usb_device *udev = data->udev;
4425
4426                 /* New sniffer firmware has crippled HCI interface */
4427                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4428                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4429         }
4430
4431         if (id->driver_info & BTUSB_INTEL_BOOT) {
4432                 /* A bug in the bootloader causes that interrupt interface is
4433                  * only enabled after receiving SetInterface(0, AltSetting=0).
4434                  */
4435                 err = usb_set_interface(data->udev, 0, 0);
4436                 if (err < 0) {
4437                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4438                         goto out_free_dev;
4439                 }
4440         }
4441
4442         if (data->isoc) {
4443                 err = usb_driver_claim_interface(&btusb_driver,
4444                                                  data->isoc, data);
4445                 if (err < 0)
4446                         goto out_free_dev;
4447         }
4448
4449         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4450                 if (!usb_driver_claim_interface(&btusb_driver,
4451                                                 data->diag, data))
4452                         __set_diag_interface(hdev);
4453                 else
4454                         data->diag = NULL;
4455         }
4456
4457         if (enable_autosuspend)
4458                 usb_enable_autosuspend(data->udev);
4459
4460         data->poll_sync = enable_poll_sync;
4461
4462         err = hci_register_dev(hdev);
4463         if (err < 0)
4464                 goto out_free_dev;
4465
4466         usb_set_intfdata(intf, data);
4467
4468         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4469                             &force_poll_sync_fops);
4470
4471         return 0;
4472
4473 out_free_dev:
4474         if (data->reset_gpio)
4475                 gpiod_put(data->reset_gpio);
4476         hci_free_dev(hdev);
4477         return err;
4478 }
4479
4480 static void btusb_disconnect(struct usb_interface *intf)
4481 {
4482         struct btusb_data *data = usb_get_intfdata(intf);
4483         struct hci_dev *hdev;
4484
4485         BT_DBG("intf %p", intf);
4486
4487         if (!data)
4488                 return;
4489
4490         hdev = data->hdev;
4491         usb_set_intfdata(data->intf, NULL);
4492
4493         if (data->isoc)
4494                 usb_set_intfdata(data->isoc, NULL);
4495
4496         if (data->diag)
4497                 usb_set_intfdata(data->diag, NULL);
4498
4499         hci_unregister_dev(hdev);
4500
4501         if (intf == data->intf) {
4502                 if (data->isoc)
4503                         usb_driver_release_interface(&btusb_driver, data->isoc);
4504                 if (data->diag)
4505                         usb_driver_release_interface(&btusb_driver, data->diag);
4506         } else if (intf == data->isoc) {
4507                 if (data->diag)
4508                         usb_driver_release_interface(&btusb_driver, data->diag);
4509                 usb_driver_release_interface(&btusb_driver, data->intf);
4510         } else if (intf == data->diag) {
4511                 usb_driver_release_interface(&btusb_driver, data->intf);
4512                 if (data->isoc)
4513                         usb_driver_release_interface(&btusb_driver, data->isoc);
4514         }
4515
4516         if (data->oob_wake_irq)
4517                 device_init_wakeup(&data->udev->dev, false);
4518
4519         if (data->reset_gpio)
4520                 gpiod_put(data->reset_gpio);
4521
4522         hci_free_dev(hdev);
4523 }
4524
4525 #ifdef CONFIG_PM
4526 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4527 {
4528         struct btusb_data *data = usb_get_intfdata(intf);
4529
4530         BT_DBG("intf %p", intf);
4531
4532         if (data->suspend_count++)
4533                 return 0;
4534
4535         spin_lock_irq(&data->txlock);
4536         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4537                 set_bit(BTUSB_SUSPENDING, &data->flags);
4538                 spin_unlock_irq(&data->txlock);
4539         } else {
4540                 spin_unlock_irq(&data->txlock);
4541                 data->suspend_count--;
4542                 return -EBUSY;
4543         }
4544
4545         cancel_work_sync(&data->work);
4546
4547         btusb_stop_traffic(data);
4548         usb_kill_anchored_urbs(&data->tx_anchor);
4549
4550         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4551                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4552                 enable_irq_wake(data->oob_wake_irq);
4553                 enable_irq(data->oob_wake_irq);
4554         }
4555
4556         /* For global suspend, Realtek devices lose the loaded fw
4557          * in them. But for autosuspend, firmware should remain.
4558          * Actually, it depends on whether the usb host sends
4559          * set feature (enable wakeup) or not.
4560          */
4561         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4562                 if (PMSG_IS_AUTO(message) &&
4563                     device_can_wakeup(&data->udev->dev))
4564                         data->udev->do_remote_wakeup = 1;
4565                 else if (!PMSG_IS_AUTO(message) &&
4566                          !device_may_wakeup(&data->udev->dev)) {
4567                         data->udev->do_remote_wakeup = 0;
4568                         data->udev->reset_resume = 1;
4569                 }
4570         }
4571
4572         return 0;
4573 }
4574
4575 static void play_deferred(struct btusb_data *data)
4576 {
4577         struct urb *urb;
4578         int err;
4579
4580         while ((urb = usb_get_from_anchor(&data->deferred))) {
4581                 usb_anchor_urb(urb, &data->tx_anchor);
4582
4583                 err = usb_submit_urb(urb, GFP_ATOMIC);
4584                 if (err < 0) {
4585                         if (err != -EPERM && err != -ENODEV)
4586                                 BT_ERR("%s urb %p submission failed (%d)",
4587                                        data->hdev->name, urb, -err);
4588                         kfree(urb->setup_packet);
4589                         usb_unanchor_urb(urb);
4590                         usb_free_urb(urb);
4591                         break;
4592                 }
4593
4594                 data->tx_in_flight++;
4595                 usb_free_urb(urb);
4596         }
4597
4598         /* Cleanup the rest deferred urbs. */
4599         while ((urb = usb_get_from_anchor(&data->deferred))) {
4600                 kfree(urb->setup_packet);
4601                 usb_free_urb(urb);
4602         }
4603 }
4604
4605 static int btusb_resume(struct usb_interface *intf)
4606 {
4607         struct btusb_data *data = usb_get_intfdata(intf);
4608         struct hci_dev *hdev = data->hdev;
4609         int err = 0;
4610
4611         BT_DBG("intf %p", intf);
4612
4613         if (--data->suspend_count)
4614                 return 0;
4615
4616         /* Disable only if not already disabled (keep it balanced) */
4617         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4618                 disable_irq(data->oob_wake_irq);
4619                 disable_irq_wake(data->oob_wake_irq);
4620         }
4621
4622         if (!test_bit(HCI_RUNNING, &hdev->flags))
4623                 goto done;
4624
4625         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4626                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4627                 if (err < 0) {
4628                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4629                         goto failed;
4630                 }
4631         }
4632
4633         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4634                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4635                 if (err < 0) {
4636                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4637                         goto failed;
4638                 }
4639
4640                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4641         }
4642
4643         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4644                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4645                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4646                 else
4647                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4648         }
4649
4650         spin_lock_irq(&data->txlock);
4651         play_deferred(data);
4652         clear_bit(BTUSB_SUSPENDING, &data->flags);
4653         spin_unlock_irq(&data->txlock);
4654         schedule_work(&data->work);
4655
4656         return 0;
4657
4658 failed:
4659         usb_scuttle_anchored_urbs(&data->deferred);
4660 done:
4661         spin_lock_irq(&data->txlock);
4662         clear_bit(BTUSB_SUSPENDING, &data->flags);
4663         spin_unlock_irq(&data->txlock);
4664
4665         return err;
4666 }
4667 #endif
4668
4669 #ifdef CONFIG_DEV_COREDUMP
4670 static void btusb_coredump(struct device *dev)
4671 {
4672         struct btusb_data *data = dev_get_drvdata(dev);
4673         struct hci_dev *hdev = data->hdev;
4674
4675         if (hdev->dump.coredump)
4676                 hdev->dump.coredump(hdev);
4677 }
4678 #endif
4679
4680 static struct usb_driver btusb_driver = {
4681         .name           = "btusb",
4682         .probe          = btusb_probe,
4683         .disconnect     = btusb_disconnect,
4684 #ifdef CONFIG_PM
4685         .suspend        = btusb_suspend,
4686         .resume         = btusb_resume,
4687 #endif
4688         .id_table       = btusb_table,
4689         .supports_autosuspend = 1,
4690         .disable_hub_initiated_lpm = 1,
4691
4692 #ifdef CONFIG_DEV_COREDUMP
4693         .drvwrap = {
4694                 .driver = {
4695                         .coredump = btusb_coredump,
4696                 },
4697         },
4698 #endif
4699 };
4700
4701 module_usb_driver(btusb_driver);
4702
4703 module_param(disable_scofix, bool, 0644);
4704 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4705
4706 module_param(force_scofix, bool, 0644);
4707 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4708
4709 module_param(enable_autosuspend, bool, 0644);
4710 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4711
4712 module_param(reset, bool, 0644);
4713 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4714
4715 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4716 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4717 MODULE_VERSION(VERSION);
4718 MODULE_LICENSE("GPL");