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 quirks_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, 0x0036), .driver_info = BTUSB_INTEL_COMBINED },
 480         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 481         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
 482                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 483                                                      BTUSB_INTEL_BROKEN_INITIAL_NCMD |
 484                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 485         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
 486                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 487                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 488         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
 489         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
 490                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 491         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
 492
 493         /* Other Intel Bluetooth devices */
 494         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 495           .driver_info = BTUSB_IGNORE },
 496
 497         /* Realtek 8821CE Bluetooth devices */
 498         { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
 499                                                      BTUSB_WIDEBAND_SPEECH },
 500
 501         /* Realtek 8822CE Bluetooth devices */
 502         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 503                                                      BTUSB_WIDEBAND_SPEECH },
 504         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 505                                                      BTUSB_WIDEBAND_SPEECH },
 506
 507         /* Realtek 8822CU Bluetooth devices */
 508         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 509                                                      BTUSB_WIDEBAND_SPEECH },
 510
 511         /* Realtek 8852AE Bluetooth devices */
 512         { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
 513                                                      BTUSB_WIDEBAND_SPEECH },
 514         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 515                                                      BTUSB_WIDEBAND_SPEECH },
 516         { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
 517                                                      BTUSB_WIDEBAND_SPEECH },
 518         { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
 519                                                      BTUSB_WIDEBAND_SPEECH },
 520         { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
 521                                                      BTUSB_WIDEBAND_SPEECH },
 522         { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
 523                                                      BTUSB_WIDEBAND_SPEECH },
 524         { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
 525                                                      BTUSB_WIDEBAND_SPEECH },
 526
 527         /* Realtek 8852CE Bluetooth devices */
 528         { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
 529                                                      BTUSB_WIDEBAND_SPEECH },
 530         { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
 531                                                      BTUSB_WIDEBAND_SPEECH },
 532         { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
 533                                                      BTUSB_WIDEBAND_SPEECH },
 534         { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
 535                                                      BTUSB_WIDEBAND_SPEECH },
 536         { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
 537                                                      BTUSB_WIDEBAND_SPEECH },
 538         { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
 539                                                      BTUSB_WIDEBAND_SPEECH },
 540
 541         /* Realtek 8852BE Bluetooth devices */
 542         { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
 543                                                      BTUSB_WIDEBAND_SPEECH },
 544         { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
 545                                                      BTUSB_WIDEBAND_SPEECH },
 546         { USB_DEVICE(0x0bda, 0xb85b), .driver_info = BTUSB_REALTEK |
 547                                                      BTUSB_WIDEBAND_SPEECH },
 548         { USB_DEVICE(0x13d3, 0x3570), .driver_info = BTUSB_REALTEK |
 549                                                      BTUSB_WIDEBAND_SPEECH },
 550         { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
 551                                                      BTUSB_WIDEBAND_SPEECH },
 552
 553         /* Realtek Bluetooth devices */
 554         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 555           .driver_info = BTUSB_REALTEK },
 556
 557         /* MediaTek Bluetooth devices */
 558         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 559           .driver_info = BTUSB_MEDIATEK |
 560                          BTUSB_WIDEBAND_SPEECH |
 561                          BTUSB_VALID_LE_STATES },
 562
 563         /* Additional MediaTek MT7615E Bluetooth devices */
 564         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 565
 566         /* Additional MediaTek MT7663 Bluetooth devices */
 567         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 568                                                      BTUSB_WIDEBAND_SPEECH |
 569                                                      BTUSB_VALID_LE_STATES },
 570         { USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK |
 571                                                      BTUSB_WIDEBAND_SPEECH |
 572                                                      BTUSB_VALID_LE_STATES },
 573
 574         /* Additional MediaTek MT7668 Bluetooth devices */
 575         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 576                                                      BTUSB_WIDEBAND_SPEECH |
 577                                                      BTUSB_VALID_LE_STATES },
 578
 579         /* Additional MediaTek MT7921 Bluetooth devices */
 580         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 581                                                      BTUSB_WIDEBAND_SPEECH |
 582                                                      BTUSB_VALID_LE_STATES },
 583         { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
 584                                                      BTUSB_WIDEBAND_SPEECH |
 585                                                      BTUSB_VALID_LE_STATES },
 586         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 587                                                      BTUSB_WIDEBAND_SPEECH |
 588                                                      BTUSB_VALID_LE_STATES },
 589         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 590                                                      BTUSB_WIDEBAND_SPEECH |
 591                                                      BTUSB_VALID_LE_STATES },
 592         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 593                                                      BTUSB_WIDEBAND_SPEECH |
 594                                                      BTUSB_VALID_LE_STATES },
 595         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 596                                                      BTUSB_WIDEBAND_SPEECH |
 597                                                      BTUSB_VALID_LE_STATES },
 598         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 599                                                      BTUSB_WIDEBAND_SPEECH |
 600                                                      BTUSB_VALID_LE_STATES },
 601         { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
 602                                                      BTUSB_WIDEBAND_SPEECH |
 603                                                      BTUSB_VALID_LE_STATES },
 604         { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
 605                                                      BTUSB_WIDEBAND_SPEECH |
 606                                                      BTUSB_VALID_LE_STATES },
 607         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 608                                                      BTUSB_WIDEBAND_SPEECH |
 609                                                      BTUSB_VALID_LE_STATES },
 610         { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
 611                                                      BTUSB_WIDEBAND_SPEECH |
 612                                                      BTUSB_VALID_LE_STATES },
 613
 614         /* MediaTek MT7922A Bluetooth devices */
 615         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 616                                                      BTUSB_WIDEBAND_SPEECH |
 617                                                      BTUSB_VALID_LE_STATES },
 618         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 619                                                      BTUSB_WIDEBAND_SPEECH |
 620                                                      BTUSB_VALID_LE_STATES },
 621         { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
 622                                                      BTUSB_WIDEBAND_SPEECH |
 623                                                      BTUSB_VALID_LE_STATES },
 624         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 625                                                      BTUSB_WIDEBAND_SPEECH |
 626                                                      BTUSB_VALID_LE_STATES },
 627         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 628                                                      BTUSB_WIDEBAND_SPEECH |
 629                                                      BTUSB_VALID_LE_STATES },
 630         { USB_DEVICE(0x0489, 0xe0e4), .driver_info = BTUSB_MEDIATEK |
 631                                                      BTUSB_WIDEBAND_SPEECH |
 632                                                      BTUSB_VALID_LE_STATES },
 633         { USB_DEVICE(0x0489, 0xe0f1), .driver_info = BTUSB_MEDIATEK |
 634                                                      BTUSB_WIDEBAND_SPEECH |
 635                                                      BTUSB_VALID_LE_STATES },
 636         { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
 637                                                      BTUSB_WIDEBAND_SPEECH |
 638                                                      BTUSB_VALID_LE_STATES },
 639         { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
 640                                                      BTUSB_WIDEBAND_SPEECH |
 641                                                      BTUSB_VALID_LE_STATES },
 642         { USB_DEVICE(0x0489, 0xe0f6), .driver_info = BTUSB_MEDIATEK |
 643                                                      BTUSB_WIDEBAND_SPEECH |
 644                                                      BTUSB_VALID_LE_STATES },
 645         { USB_DEVICE(0x0489, 0xe102), .driver_info = BTUSB_MEDIATEK |
 646                                                      BTUSB_WIDEBAND_SPEECH |
 647                                                      BTUSB_VALID_LE_STATES },
 648         { USB_DEVICE(0x04ca, 0x3804), .driver_info = BTUSB_MEDIATEK |
 649                                                      BTUSB_WIDEBAND_SPEECH |
 650                                                      BTUSB_VALID_LE_STATES },
 651
 652         /* Additional Realtek 8723AE Bluetooth devices */
 653         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 654         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 655
 656         /* Additional Realtek 8723BE Bluetooth devices */
 657         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 658         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 659         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 660         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 661         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 662         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 663         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 664
 665         /* Additional Realtek 8723BU Bluetooth devices */
 666         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 667
 668         /* Additional Realtek 8723DE Bluetooth devices */
 669         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 670         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 671
 672         /* Additional Realtek 8761BUV Bluetooth devices */
 673         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 674                                                      BTUSB_WIDEBAND_SPEECH },
 675         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 676                                                      BTUSB_WIDEBAND_SPEECH },
 677         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 678                                                      BTUSB_WIDEBAND_SPEECH },
 679         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 680                                                      BTUSB_WIDEBAND_SPEECH },
 681         { USB_DEVICE(0x6655, 0x8771), .driver_info = BTUSB_REALTEK |
 682                                                      BTUSB_WIDEBAND_SPEECH },
 683         { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
 684                                                      BTUSB_WIDEBAND_SPEECH },
 685         { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 686                                                      BTUSB_WIDEBAND_SPEECH },
 687
 688         /* Additional Realtek 8821AE Bluetooth devices */
 689         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 690         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 691         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 692         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 693         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 694
 695         /* Additional Realtek 8822BE Bluetooth devices */
 696         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 697         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 698
 699         /* Additional Realtek 8822CE Bluetooth devices */
 700         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 701                                                      BTUSB_WIDEBAND_SPEECH },
 702         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 703                                                      BTUSB_WIDEBAND_SPEECH },
 704         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 705                                                      BTUSB_WIDEBAND_SPEECH },
 706         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 707                                                      BTUSB_WIDEBAND_SPEECH },
 708         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 709                                                      BTUSB_WIDEBAND_SPEECH },
 710         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 711                                                      BTUSB_WIDEBAND_SPEECH },
 712         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 713                                                      BTUSB_WIDEBAND_SPEECH },
 714         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 715                                                      BTUSB_WIDEBAND_SPEECH },
 716         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 717                                                      BTUSB_WIDEBAND_SPEECH },
 718         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 719                                                      BTUSB_WIDEBAND_SPEECH },
 720         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 721                                                      BTUSB_WIDEBAND_SPEECH },
 722
 723         /* Actions Semiconductor ATS2851 based devices */
 724         { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
 725
 726         /* Silicon Wave based devices */
 727         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 728
 729         { }     /* Terminating entry */
 730 };
 731
 732 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 733  * this is a problem with the platform (likely shutting off all power) not with
 734  * the module itself. So we use a DMI list to match known broken platforms.
 735  */
 736 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 737         {
 738                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 739                 .matches = {
 740                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 741                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 742                 },
 743         },
 744         {
 745                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 746                 .matches = {
 747                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 748                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 749                 },
 750         },
 751         {
 752                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 753                 .matches = {
 754                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 755                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 756                 },
 757         },
 758         {}
 759 };
 760
 761 struct qca_dump_info {
 762         /* fields for dump collection */
 763         u16 id_vendor;
 764         u16 id_product;
 765         u32 fw_version;
 766         u32 controller_id;
 767         u32 ram_dump_size;
 768         u16 ram_dump_seqno;
 769 };
 770
 771 #define BTUSB_MAX_ISOC_FRAMES   10
 772
 773 #define BTUSB_INTR_RUNNING      0
 774 #define BTUSB_BULK_RUNNING      1
 775 #define BTUSB_ISOC_RUNNING      2
 776 #define BTUSB_SUSPENDING        3
 777 #define BTUSB_DID_ISO_RESUME    4
 778 #define BTUSB_BOOTLOADER        5
 779 #define BTUSB_DOWNLOADING       6
 780 #define BTUSB_FIRMWARE_LOADED   7
 781 #define BTUSB_FIRMWARE_FAILED   8
 782 #define BTUSB_BOOTING           9
 783 #define BTUSB_DIAG_RUNNING      10
 784 #define BTUSB_OOB_WAKE_ENABLED  11
 785 #define BTUSB_HW_RESET_ACTIVE   12
 786 #define BTUSB_TX_WAIT_VND_EVT   13
 787 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 788 #define BTUSB_USE_ALT3_FOR_WBS  15
 789 #define BTUSB_ALT6_CONTINUOUS_TX        16
 790 #define BTUSB_HW_SSR_ACTIVE     17
 791
 792 struct btusb_data {
 793         struct hci_dev       *hdev;
 794         struct usb_device    *udev;
 795         struct usb_interface *intf;
 796         struct usb_interface *isoc;
 797         struct usb_interface *diag;
 798         unsigned isoc_ifnum;
 799
 800         unsigned long flags;
 801
 802         bool poll_sync;
 803         int intr_interval;
 804         struct work_struct  work;
 805         struct work_struct  waker;
 806         struct delayed_work rx_work;
 807
 808         struct sk_buff_head acl_q;
 809
 810         struct usb_anchor deferred;
 811         struct usb_anchor tx_anchor;
 812         int tx_in_flight;
 813         spinlock_t txlock;
 814
 815         struct usb_anchor intr_anchor;
 816         struct usb_anchor bulk_anchor;
 817         struct usb_anchor isoc_anchor;
 818         struct usb_anchor diag_anchor;
 819         struct usb_anchor ctrl_anchor;
 820         spinlock_t rxlock;
 821
 822         struct sk_buff *evt_skb;
 823         struct sk_buff *acl_skb;
 824         struct sk_buff *sco_skb;
 825
 826         struct usb_endpoint_descriptor *intr_ep;
 827         struct usb_endpoint_descriptor *bulk_tx_ep;
 828         struct usb_endpoint_descriptor *bulk_rx_ep;
 829         struct usb_endpoint_descriptor *isoc_tx_ep;
 830         struct usb_endpoint_descriptor *isoc_rx_ep;
 831         struct usb_endpoint_descriptor *diag_tx_ep;
 832         struct usb_endpoint_descriptor *diag_rx_ep;
 833
 834         struct gpio_desc *reset_gpio;
 835
 836         __u8 cmdreq_type;
 837         __u8 cmdreq;
 838
 839         unsigned int sco_num;
 840         unsigned int air_mode;
 841         bool usb_alt6_packet_flow;
 842         int isoc_altsetting;
 843         int suspend_count;
 844
 845         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 846         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 847         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 848
 849         int (*setup_on_usb)(struct hci_dev *hdev);
 850
 851         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 852         unsigned cmd_timeout_cnt;
 853
 854         struct qca_dump_info qca_dump;
 855 };
 856
 857 static void btusb_reset(struct hci_dev *hdev)
 858 {
 859         struct btusb_data *data;
 860         int err;
 861
 862         if (hdev->reset) {
 863                 hdev->reset(hdev);
 864                 return;
 865         }
 866
 867         data = hci_get_drvdata(hdev);
 868         /* This is not an unbalanced PM reference since the device will reset */
 869         err = usb_autopm_get_interface(data->intf);
 870         if (err) {
 871                 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
 872                 return;
 873         }
 874
 875         bt_dev_err(hdev, "Resetting usb device.");
 876         usb_queue_reset_device(data->intf);
 877 }
 878
 879 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 880 {
 881         struct btusb_data *data = hci_get_drvdata(hdev);
 882         struct gpio_desc *reset_gpio = data->reset_gpio;
 883         struct btintel_data *intel_data = hci_get_priv(hdev);
 884
 885         if (++data->cmd_timeout_cnt < 5)
 886                 return;
 887
 888         if (intel_data->acpi_reset_method) {
 889                 if (test_and_set_bit(INTEL_ACPI_RESET_ACTIVE, intel_data->flags)) {
 890                         bt_dev_err(hdev, "acpi: last reset failed ? Not resetting again");
 891                         return;
 892                 }
 893
 894                 bt_dev_err(hdev, "Initiating acpi reset method");
 895                 /* If ACPI reset method fails, lets try with legacy GPIO
 896                  * toggling
 897                  */
 898                 if (!intel_data->acpi_reset_method(hdev)) {
 899                         return;
 900                 }
 901         }
 902
 903         if (!reset_gpio) {
 904                 btusb_reset(hdev);
 905                 return;
 906         }
 907
 908         /*
 909          * Toggle the hard reset line if the platform provides one. The reset
 910          * is going to yank the device off the USB and then replug. So doing
 911          * once is enough. The cleanup is handled correctly on the way out
 912          * (standard USB disconnect), and the new device is detected cleanly
 913          * and bound to the driver again like it should be.
 914          */
 915         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 916                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 917                 return;
 918         }
 919
 920         bt_dev_err(hdev, "Initiating HW reset via gpio");
 921         gpiod_set_value_cansleep(reset_gpio, 1);
 922         msleep(100);
 923         gpiod_set_value_cansleep(reset_gpio, 0);
 924 }
 925
 926 #define RTK_DEVCOREDUMP_CODE_MEMDUMP            0x01
 927 #define RTK_DEVCOREDUMP_CODE_HW_ERR             0x02
 928 #define RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT        0x03
 929
 930 #define RTK_SUB_EVENT_CODE_COREDUMP             0x34
 931
 932 struct rtk_dev_coredump_hdr {
 933         u8 type;
 934         u8 code;
 935         u8 reserved[2];
 936 } __packed;
 937
 938 static inline void btusb_rtl_alloc_devcoredump(struct hci_dev *hdev,
 939                 struct rtk_dev_coredump_hdr *hdr, u8 *buf, u32 len)
 940 {
 941         struct sk_buff *skb;
 942
 943         skb = alloc_skb(len + sizeof(*hdr), GFP_ATOMIC);
 944         if (!skb)
 945                 return;
 946
 947         skb_put_data(skb, hdr, sizeof(*hdr));
 948         if (len)
 949                 skb_put_data(skb, buf, len);
 950
 951         if (!hci_devcd_init(hdev, skb->len)) {
 952                 hci_devcd_append(hdev, skb);
 953                 hci_devcd_complete(hdev);
 954         } else {
 955                 bt_dev_err(hdev, "RTL: Failed to generate devcoredump");
 956                 kfree_skb(skb);
 957         }
 958 }
 959
 960 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 961 {
 962         struct btusb_data *data = hci_get_drvdata(hdev);
 963         struct gpio_desc *reset_gpio = data->reset_gpio;
 964         struct rtk_dev_coredump_hdr hdr = {
 965                 .type = RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT,
 966         };
 967
 968         btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
 969
 970         if (++data->cmd_timeout_cnt < 5)
 971                 return;
 972
 973         if (!reset_gpio) {
 974                 btusb_reset(hdev);
 975                 return;
 976         }
 977
 978         /* Toggle the hard reset line. The Realtek device is going to
 979          * yank itself off the USB and then replug. The cleanup is handled
 980          * correctly on the way out (standard USB disconnect), and the new
 981          * device is detected cleanly and bound to the driver again like
 982          * it should be.
 983          */
 984         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 985                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 986                 return;
 987         }
 988
 989         bt_dev_err(hdev, "Reset Realtek device via gpio");
 990         gpiod_set_value_cansleep(reset_gpio, 1);
 991         msleep(200);
 992         gpiod_set_value_cansleep(reset_gpio, 0);
 993 }
 994
 995 static void btusb_rtl_hw_error(struct hci_dev *hdev, u8 code)
 996 {
 997         struct rtk_dev_coredump_hdr hdr = {
 998                 .type = RTK_DEVCOREDUMP_CODE_HW_ERR,
 999                 .code = code,
1000         };
1001
1002         bt_dev_err(hdev, "RTL: hw err, trigger devcoredump (%d)", code);
1003
1004         btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
1005 }
1006
1007 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
1008 {
1009         struct btusb_data *data = hci_get_drvdata(hdev);
1010         struct gpio_desc *reset_gpio = data->reset_gpio;
1011
1012         if (test_bit(BTUSB_HW_SSR_ACTIVE, &data->flags)) {
1013                 bt_dev_info(hdev, "Ramdump in progress, defer cmd_timeout");
1014                 return;
1015         }
1016
1017         if (++data->cmd_timeout_cnt < 5)
1018                 return;
1019
1020         if (reset_gpio) {
1021                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
1022
1023                 /* Toggle the hard reset line. The qca bt device is going to
1024                  * yank itself off the USB and then replug. The cleanup is handled
1025                  * correctly on the way out (standard USB disconnect), and the new
1026                  * device is detected cleanly and bound to the driver again like
1027                  * it should be.
1028                  */
1029                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
1030                         bt_dev_err(hdev, "last reset failed? Not resetting again");
1031                         return;
1032                 }
1033
1034                 gpiod_set_value_cansleep(reset_gpio, 0);
1035                 msleep(200);
1036                 gpiod_set_value_cansleep(reset_gpio, 1);
1037
1038                 return;
1039         }
1040
1041         btusb_reset(hdev);
1042 }
1043
1044 static inline void btusb_free_frags(struct btusb_data *data)
1045 {
1046         unsigned long flags;
1047
1048         spin_lock_irqsave(&data->rxlock, flags);
1049
1050         dev_kfree_skb_irq(data->evt_skb);
1051         data->evt_skb = NULL;
1052
1053         dev_kfree_skb_irq(data->acl_skb);
1054         data->acl_skb = NULL;
1055
1056         dev_kfree_skb_irq(data->sco_skb);
1057         data->sco_skb = NULL;
1058
1059         spin_unlock_irqrestore(&data->rxlock, flags);
1060 }
1061
1062 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
1063 {
1064         if (data->intr_interval) {
1065                 /* Trigger dequeue immediatelly if an event is received */
1066                 schedule_delayed_work(&data->rx_work, 0);
1067         }
1068
1069         return data->recv_event(data->hdev, skb);
1070 }
1071
1072 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
1073 {
1074         struct sk_buff *skb;
1075         unsigned long flags;
1076         int err = 0;
1077
1078         spin_lock_irqsave(&data->rxlock, flags);
1079         skb = data->evt_skb;
1080
1081         while (count) {
1082                 int len;
1083
1084                 if (!skb) {
1085                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
1086                         if (!skb) {
1087                                 err = -ENOMEM;
1088                                 break;
1089                         }
1090
1091                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1092                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
1093                 }
1094
1095                 len = min_t(uint, hci_skb_expect(skb), count);
1096                 skb_put_data(skb, buffer, len);
1097
1098                 count -= len;
1099                 buffer += len;
1100                 hci_skb_expect(skb) -= len;
1101
1102                 if (skb->len == HCI_EVENT_HDR_SIZE) {
1103                         /* Complete event header */
1104                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
1105
1106                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1107                                 kfree_skb(skb);
1108                                 skb = NULL;
1109
1110                                 err = -EILSEQ;
1111                                 break;
1112                         }
1113                 }
1114
1115                 if (!hci_skb_expect(skb)) {
1116                         /* Complete frame */
1117                         btusb_recv_event(data, skb);
1118                         skb = NULL;
1119                 }
1120         }
1121
1122         data->evt_skb = skb;
1123         spin_unlock_irqrestore(&data->rxlock, flags);
1124
1125         return err;
1126 }
1127
1128 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1129 {
1130         /* Only queue ACL packet if intr_interval is set as it means
1131          * force_poll_sync has been enabled.
1132          */
1133         if (!data->intr_interval)
1134                 return data->recv_acl(data->hdev, skb);
1135
1136         skb_queue_tail(&data->acl_q, skb);
1137         schedule_delayed_work(&data->rx_work, data->intr_interval);
1138
1139         return 0;
1140 }
1141
1142 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1143 {
1144         struct sk_buff *skb;
1145         unsigned long flags;
1146         int err = 0;
1147
1148         spin_lock_irqsave(&data->rxlock, flags);
1149         skb = data->acl_skb;
1150
1151         while (count) {
1152                 int len;
1153
1154                 if (!skb) {
1155                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1156                         if (!skb) {
1157                                 err = -ENOMEM;
1158                                 break;
1159                         }
1160
1161                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1162                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1163                 }
1164
1165                 len = min_t(uint, hci_skb_expect(skb), count);
1166                 skb_put_data(skb, buffer, len);
1167
1168                 count -= len;
1169                 buffer += len;
1170                 hci_skb_expect(skb) -= len;
1171
1172                 if (skb->len == HCI_ACL_HDR_SIZE) {
1173                         __le16 dlen = hci_acl_hdr(skb)->dlen;
1174
1175                         /* Complete ACL header */
1176                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
1177
1178                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
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                         btusb_recv_acl(data, skb);
1190                         skb = NULL;
1191                 }
1192         }
1193
1194         data->acl_skb = skb;
1195         spin_unlock_irqrestore(&data->rxlock, flags);
1196
1197         return err;
1198 }
1199
1200 static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1201                                       struct hci_sco_hdr *hdr)
1202 {
1203         __u16 handle;
1204
1205         if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1206                 // Can't validate, userspace controls everything.
1207                 return true;
1208
1209         /*
1210          * USB isochronous transfers are not designed to be reliable and may
1211          * lose fragments.  When this happens, the next first fragment
1212          * encountered might actually be a continuation fragment.
1213          * Validate the handle to detect it and drop it, or else the upper
1214          * layer will get garbage for a while.
1215          */
1216
1217         handle = hci_handle(__le16_to_cpu(hdr->handle));
1218
1219         switch (hci_conn_lookup_type(hdev, handle)) {
1220         case SCO_LINK:
1221         case ESCO_LINK:
1222                 return true;
1223         default:
1224                 return false;
1225         }
1226 }
1227
1228 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1229 {
1230         struct sk_buff *skb;
1231         unsigned long flags;
1232         int err = 0;
1233
1234         spin_lock_irqsave(&data->rxlock, flags);
1235         skb = data->sco_skb;
1236
1237         while (count) {
1238                 int len;
1239
1240                 if (!skb) {
1241                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1242                         if (!skb) {
1243                                 err = -ENOMEM;
1244                                 break;
1245                         }
1246
1247                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1248                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1249                 }
1250
1251                 len = min_t(uint, hci_skb_expect(skb), count);
1252                 skb_put_data(skb, buffer, len);
1253
1254                 count -= len;
1255                 buffer += len;
1256                 hci_skb_expect(skb) -= len;
1257
1258                 if (skb->len == HCI_SCO_HDR_SIZE) {
1259                         /* Complete SCO header */
1260                         struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1261
1262                         hci_skb_expect(skb) = hdr->dlen;
1263
1264                         if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1265                             !btusb_validate_sco_handle(data->hdev, hdr)) {
1266                                 kfree_skb(skb);
1267                                 skb = NULL;
1268
1269                                 err = -EILSEQ;
1270                                 break;
1271                         }
1272                 }
1273
1274                 if (!hci_skb_expect(skb)) {
1275                         /* Complete frame */
1276                         hci_recv_frame(data->hdev, skb);
1277                         skb = NULL;
1278                 }
1279         }
1280
1281         data->sco_skb = skb;
1282         spin_unlock_irqrestore(&data->rxlock, flags);
1283
1284         return err;
1285 }
1286
1287 static void btusb_intr_complete(struct urb *urb)
1288 {
1289         struct hci_dev *hdev = urb->context;
1290         struct btusb_data *data = hci_get_drvdata(hdev);
1291         int err;
1292
1293         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1294                urb->actual_length);
1295
1296         if (!test_bit(HCI_RUNNING, &hdev->flags))
1297                 return;
1298
1299         if (urb->status == 0) {
1300                 hdev->stat.byte_rx += urb->actual_length;
1301
1302                 if (btusb_recv_intr(data, urb->transfer_buffer,
1303                                     urb->actual_length) < 0) {
1304                         bt_dev_err(hdev, "corrupted event packet");
1305                         hdev->stat.err_rx++;
1306                 }
1307         } else if (urb->status == -ENOENT) {
1308                 /* Avoid suspend failed when usb_kill_urb */
1309                 return;
1310         }
1311
1312         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1313                 return;
1314
1315         usb_mark_last_busy(data->udev);
1316         usb_anchor_urb(urb, &data->intr_anchor);
1317
1318         err = usb_submit_urb(urb, GFP_ATOMIC);
1319         if (err < 0) {
1320                 /* -EPERM: urb is being killed;
1321                  * -ENODEV: device got disconnected
1322                  */
1323                 if (err != -EPERM && err != -ENODEV)
1324                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1325                                    urb, -err);
1326                 if (err != -EPERM)
1327                         hci_cmd_sync_cancel(hdev, -err);
1328                 usb_unanchor_urb(urb);
1329         }
1330 }
1331
1332 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1333 {
1334         struct btusb_data *data = hci_get_drvdata(hdev);
1335         struct urb *urb;
1336         unsigned char *buf;
1337         unsigned int pipe;
1338         int err, size;
1339
1340         BT_DBG("%s", hdev->name);
1341
1342         if (!data->intr_ep)
1343                 return -ENODEV;
1344
1345         urb = usb_alloc_urb(0, mem_flags);
1346         if (!urb)
1347                 return -ENOMEM;
1348
1349         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1350
1351         buf = kmalloc(size, mem_flags);
1352         if (!buf) {
1353                 usb_free_urb(urb);
1354                 return -ENOMEM;
1355         }
1356
1357         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1358
1359         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1360                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1361
1362         urb->transfer_flags |= URB_FREE_BUFFER;
1363
1364         usb_anchor_urb(urb, &data->intr_anchor);
1365
1366         err = usb_submit_urb(urb, mem_flags);
1367         if (err < 0) {
1368                 if (err != -EPERM && err != -ENODEV)
1369                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1370                                    urb, -err);
1371                 if (err != -EPERM)
1372                         hci_cmd_sync_cancel(hdev, -err);
1373                 usb_unanchor_urb(urb);
1374         }
1375
1376         /* Only initialize intr_interval if URB poll sync is enabled */
1377         if (!data->poll_sync)
1378                 goto done;
1379
1380         /* The units are frames (milliseconds) for full and low speed devices,
1381          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1382          * devices.
1383          *
1384          * This is done once on open/resume so it shouldn't change even if
1385          * force_poll_sync changes.
1386          */
1387         switch (urb->dev->speed) {
1388         case USB_SPEED_SUPER_PLUS:
1389         case USB_SPEED_SUPER:   /* units are 125us */
1390                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1391                 break;
1392         default:
1393                 data->intr_interval = msecs_to_jiffies(urb->interval);
1394                 break;
1395         }
1396
1397 done:
1398         usb_free_urb(urb);
1399
1400         return err;
1401 }
1402
1403 static void btusb_bulk_complete(struct urb *urb)
1404 {
1405         struct hci_dev *hdev = urb->context;
1406         struct btusb_data *data = hci_get_drvdata(hdev);
1407         int err;
1408
1409         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1410                urb->actual_length);
1411
1412         if (!test_bit(HCI_RUNNING, &hdev->flags))
1413                 return;
1414
1415         if (urb->status == 0) {
1416                 hdev->stat.byte_rx += urb->actual_length;
1417
1418                 if (data->recv_bulk(data, urb->transfer_buffer,
1419                                     urb->actual_length) < 0) {
1420                         bt_dev_err(hdev, "corrupted ACL packet");
1421                         hdev->stat.err_rx++;
1422                 }
1423         } else if (urb->status == -ENOENT) {
1424                 /* Avoid suspend failed when usb_kill_urb */
1425                 return;
1426         }
1427
1428         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1429                 return;
1430
1431         usb_anchor_urb(urb, &data->bulk_anchor);
1432         usb_mark_last_busy(data->udev);
1433
1434         err = usb_submit_urb(urb, GFP_ATOMIC);
1435         if (err < 0) {
1436                 /* -EPERM: urb is being killed;
1437                  * -ENODEV: device got disconnected
1438                  */
1439                 if (err != -EPERM && err != -ENODEV)
1440                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1441                                    urb, -err);
1442                 usb_unanchor_urb(urb);
1443         }
1444 }
1445
1446 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1447 {
1448         struct btusb_data *data = hci_get_drvdata(hdev);
1449         struct urb *urb;
1450         unsigned char *buf;
1451         unsigned int pipe;
1452         int err, size = HCI_MAX_FRAME_SIZE;
1453
1454         BT_DBG("%s", hdev->name);
1455
1456         if (!data->bulk_rx_ep)
1457                 return -ENODEV;
1458
1459         urb = usb_alloc_urb(0, mem_flags);
1460         if (!urb)
1461                 return -ENOMEM;
1462
1463         buf = kmalloc(size, mem_flags);
1464         if (!buf) {
1465                 usb_free_urb(urb);
1466                 return -ENOMEM;
1467         }
1468
1469         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1470
1471         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1472                           btusb_bulk_complete, hdev);
1473
1474         urb->transfer_flags |= URB_FREE_BUFFER;
1475
1476         usb_mark_last_busy(data->udev);
1477         usb_anchor_urb(urb, &data->bulk_anchor);
1478
1479         err = usb_submit_urb(urb, mem_flags);
1480         if (err < 0) {
1481                 if (err != -EPERM && err != -ENODEV)
1482                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1483                                    urb, -err);
1484                 usb_unanchor_urb(urb);
1485         }
1486
1487         usb_free_urb(urb);
1488
1489         return err;
1490 }
1491
1492 static void btusb_isoc_complete(struct urb *urb)
1493 {
1494         struct hci_dev *hdev = urb->context;
1495         struct btusb_data *data = hci_get_drvdata(hdev);
1496         int i, err;
1497
1498         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1499                urb->actual_length);
1500
1501         if (!test_bit(HCI_RUNNING, &hdev->flags))
1502                 return;
1503
1504         if (urb->status == 0) {
1505                 for (i = 0; i < urb->number_of_packets; i++) {
1506                         unsigned int offset = urb->iso_frame_desc[i].offset;
1507                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1508
1509                         if (urb->iso_frame_desc[i].status)
1510                                 continue;
1511
1512                         hdev->stat.byte_rx += length;
1513
1514                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1515                                             length) < 0) {
1516                                 bt_dev_err(hdev, "corrupted SCO packet");
1517                                 hdev->stat.err_rx++;
1518                         }
1519                 }
1520         } else if (urb->status == -ENOENT) {
1521                 /* Avoid suspend failed when usb_kill_urb */
1522                 return;
1523         }
1524
1525         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1526                 return;
1527
1528         usb_anchor_urb(urb, &data->isoc_anchor);
1529
1530         err = usb_submit_urb(urb, GFP_ATOMIC);
1531         if (err < 0) {
1532                 /* -EPERM: urb is being killed;
1533                  * -ENODEV: device got disconnected
1534                  */
1535                 if (err != -EPERM && err != -ENODEV)
1536                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1537                                    urb, -err);
1538                 usb_unanchor_urb(urb);
1539         }
1540 }
1541
1542 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1543                                                int mtu, struct btusb_data *data)
1544 {
1545         int i = 0, offset = 0;
1546         unsigned int interval;
1547
1548         BT_DBG("len %d mtu %d", len, mtu);
1549
1550         /* For mSBC ALT 6 settings some chips need to transmit the data
1551          * continuously without the zero length of USB packets.
1552          */
1553         if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1554                 goto ignore_usb_alt6_packet_flow;
1555
1556         /* For mSBC ALT 6 setting the host will send the packet at continuous
1557          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1558          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1559          * To maintain the rate we send 63bytes of usb packets alternatively for
1560          * 7ms and 8ms to maintain the rate as 7.5ms.
1561          */
1562         if (data->usb_alt6_packet_flow) {
1563                 interval = 7;
1564                 data->usb_alt6_packet_flow = false;
1565         } else {
1566                 interval = 6;
1567                 data->usb_alt6_packet_flow = true;
1568         }
1569
1570         for (i = 0; i < interval; i++) {
1571                 urb->iso_frame_desc[i].offset = offset;
1572                 urb->iso_frame_desc[i].length = offset;
1573         }
1574
1575 ignore_usb_alt6_packet_flow:
1576         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1577                 urb->iso_frame_desc[i].offset = offset;
1578                 urb->iso_frame_desc[i].length = len;
1579                 i++;
1580         }
1581
1582         urb->number_of_packets = i;
1583 }
1584
1585 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1586 {
1587         int i, offset = 0;
1588
1589         BT_DBG("len %d mtu %d", len, mtu);
1590
1591         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1592                                         i++, offset += mtu, len -= mtu) {
1593                 urb->iso_frame_desc[i].offset = offset;
1594                 urb->iso_frame_desc[i].length = mtu;
1595         }
1596
1597         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1598                 urb->iso_frame_desc[i].offset = offset;
1599                 urb->iso_frame_desc[i].length = len;
1600                 i++;
1601         }
1602
1603         urb->number_of_packets = i;
1604 }
1605
1606 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1607 {
1608         struct btusb_data *data = hci_get_drvdata(hdev);
1609         struct urb *urb;
1610         unsigned char *buf;
1611         unsigned int pipe;
1612         int err, size;
1613
1614         BT_DBG("%s", hdev->name);
1615
1616         if (!data->isoc_rx_ep)
1617                 return -ENODEV;
1618
1619         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1620         if (!urb)
1621                 return -ENOMEM;
1622
1623         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1624                                                 BTUSB_MAX_ISOC_FRAMES;
1625
1626         buf = kmalloc(size, mem_flags);
1627         if (!buf) {
1628                 usb_free_urb(urb);
1629                 return -ENOMEM;
1630         }
1631
1632         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1633
1634         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1635                          hdev, data->isoc_rx_ep->bInterval);
1636
1637         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1638
1639         __fill_isoc_descriptor(urb, size,
1640                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1641
1642         usb_anchor_urb(urb, &data->isoc_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_diag_complete(struct urb *urb)
1658 {
1659         struct hci_dev *hdev = urb->context;
1660         struct btusb_data *data = hci_get_drvdata(hdev);
1661         int err;
1662
1663         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1664                urb->actual_length);
1665
1666         if (urb->status == 0) {
1667                 struct sk_buff *skb;
1668
1669                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1670                 if (skb) {
1671                         skb_put_data(skb, urb->transfer_buffer,
1672                                      urb->actual_length);
1673                         hci_recv_diag(hdev, skb);
1674                 }
1675         } else if (urb->status == -ENOENT) {
1676                 /* Avoid suspend failed when usb_kill_urb */
1677                 return;
1678         }
1679
1680         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1681                 return;
1682
1683         usb_anchor_urb(urb, &data->diag_anchor);
1684         usb_mark_last_busy(data->udev);
1685
1686         err = usb_submit_urb(urb, GFP_ATOMIC);
1687         if (err < 0) {
1688                 /* -EPERM: urb is being killed;
1689                  * -ENODEV: device got disconnected
1690                  */
1691                 if (err != -EPERM && err != -ENODEV)
1692                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1693                                    urb, -err);
1694                 usb_unanchor_urb(urb);
1695         }
1696 }
1697
1698 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1699 {
1700         struct btusb_data *data = hci_get_drvdata(hdev);
1701         struct urb *urb;
1702         unsigned char *buf;
1703         unsigned int pipe;
1704         int err, size = HCI_MAX_FRAME_SIZE;
1705
1706         BT_DBG("%s", hdev->name);
1707
1708         if (!data->diag_rx_ep)
1709                 return -ENODEV;
1710
1711         urb = usb_alloc_urb(0, mem_flags);
1712         if (!urb)
1713                 return -ENOMEM;
1714
1715         buf = kmalloc(size, mem_flags);
1716         if (!buf) {
1717                 usb_free_urb(urb);
1718                 return -ENOMEM;
1719         }
1720
1721         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1722
1723         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1724                           btusb_diag_complete, hdev);
1725
1726         urb->transfer_flags |= URB_FREE_BUFFER;
1727
1728         usb_mark_last_busy(data->udev);
1729         usb_anchor_urb(urb, &data->diag_anchor);
1730
1731         err = usb_submit_urb(urb, mem_flags);
1732         if (err < 0) {
1733                 if (err != -EPERM && err != -ENODEV)
1734                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1735                                    urb, -err);
1736                 usb_unanchor_urb(urb);
1737         }
1738
1739         usb_free_urb(urb);
1740
1741         return err;
1742 }
1743
1744 static void btusb_tx_complete(struct urb *urb)
1745 {
1746         struct sk_buff *skb = urb->context;
1747         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1748         struct btusb_data *data = hci_get_drvdata(hdev);
1749         unsigned long flags;
1750
1751         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1752                urb->actual_length);
1753
1754         if (!test_bit(HCI_RUNNING, &hdev->flags))
1755                 goto done;
1756
1757         if (!urb->status) {
1758                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1759         } else {
1760                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1761                         hci_cmd_sync_cancel(hdev, -urb->status);
1762                 hdev->stat.err_tx++;
1763         }
1764
1765 done:
1766         spin_lock_irqsave(&data->txlock, flags);
1767         data->tx_in_flight--;
1768         spin_unlock_irqrestore(&data->txlock, flags);
1769
1770         kfree(urb->setup_packet);
1771
1772         kfree_skb(skb);
1773 }
1774
1775 static void btusb_isoc_tx_complete(struct urb *urb)
1776 {
1777         struct sk_buff *skb = urb->context;
1778         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1779
1780         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1781                urb->actual_length);
1782
1783         if (!test_bit(HCI_RUNNING, &hdev->flags))
1784                 goto done;
1785
1786         if (!urb->status)
1787                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1788         else
1789                 hdev->stat.err_tx++;
1790
1791 done:
1792         kfree(urb->setup_packet);
1793
1794         kfree_skb(skb);
1795 }
1796
1797 static int btusb_open(struct hci_dev *hdev)
1798 {
1799         struct btusb_data *data = hci_get_drvdata(hdev);
1800         int err;
1801
1802         BT_DBG("%s", hdev->name);
1803
1804         err = usb_autopm_get_interface(data->intf);
1805         if (err < 0)
1806                 return err;
1807
1808         /* Patching USB firmware files prior to starting any URBs of HCI path
1809          * It is more safe to use USB bulk channel for downloading USB patch
1810          */
1811         if (data->setup_on_usb) {
1812                 err = data->setup_on_usb(hdev);
1813                 if (err < 0)
1814                         goto setup_fail;
1815         }
1816
1817         data->intf->needs_remote_wakeup = 1;
1818
1819         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1820                 goto done;
1821
1822         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1823         if (err < 0)
1824                 goto failed;
1825
1826         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1827         if (err < 0) {
1828                 usb_kill_anchored_urbs(&data->intr_anchor);
1829                 goto failed;
1830         }
1831
1832         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1833         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1834
1835         if (data->diag) {
1836                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1837                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1838         }
1839
1840 done:
1841         usb_autopm_put_interface(data->intf);
1842         return 0;
1843
1844 failed:
1845         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1846 setup_fail:
1847         usb_autopm_put_interface(data->intf);
1848         return err;
1849 }
1850
1851 static void btusb_stop_traffic(struct btusb_data *data)
1852 {
1853         usb_kill_anchored_urbs(&data->intr_anchor);
1854         usb_kill_anchored_urbs(&data->bulk_anchor);
1855         usb_kill_anchored_urbs(&data->isoc_anchor);
1856         usb_kill_anchored_urbs(&data->diag_anchor);
1857         usb_kill_anchored_urbs(&data->ctrl_anchor);
1858 }
1859
1860 static int btusb_close(struct hci_dev *hdev)
1861 {
1862         struct btusb_data *data = hci_get_drvdata(hdev);
1863         int err;
1864
1865         BT_DBG("%s", hdev->name);
1866
1867         cancel_delayed_work(&data->rx_work);
1868         cancel_work_sync(&data->work);
1869         cancel_work_sync(&data->waker);
1870
1871         skb_queue_purge(&data->acl_q);
1872
1873         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1874         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1875         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1876         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1877
1878         btusb_stop_traffic(data);
1879         btusb_free_frags(data);
1880
1881         err = usb_autopm_get_interface(data->intf);
1882         if (err < 0)
1883                 goto failed;
1884
1885         data->intf->needs_remote_wakeup = 0;
1886
1887         /* Enable remote wake up for auto-suspend */
1888         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1889                 data->intf->needs_remote_wakeup = 1;
1890
1891         usb_autopm_put_interface(data->intf);
1892
1893 failed:
1894         usb_scuttle_anchored_urbs(&data->deferred);
1895         return 0;
1896 }
1897
1898 static int btusb_flush(struct hci_dev *hdev)
1899 {
1900         struct btusb_data *data = hci_get_drvdata(hdev);
1901
1902         BT_DBG("%s", hdev->name);
1903
1904         cancel_delayed_work(&data->rx_work);
1905
1906         skb_queue_purge(&data->acl_q);
1907
1908         usb_kill_anchored_urbs(&data->tx_anchor);
1909         btusb_free_frags(data);
1910
1911         return 0;
1912 }
1913
1914 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1915 {
1916         struct btusb_data *data = hci_get_drvdata(hdev);
1917         struct usb_ctrlrequest *dr;
1918         struct urb *urb;
1919         unsigned int pipe;
1920
1921         urb = usb_alloc_urb(0, GFP_KERNEL);
1922         if (!urb)
1923                 return ERR_PTR(-ENOMEM);
1924
1925         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1926         if (!dr) {
1927                 usb_free_urb(urb);
1928                 return ERR_PTR(-ENOMEM);
1929         }
1930
1931         dr->bRequestType = data->cmdreq_type;
1932         dr->bRequest     = data->cmdreq;
1933         dr->wIndex       = 0;
1934         dr->wValue       = 0;
1935         dr->wLength      = __cpu_to_le16(skb->len);
1936
1937         pipe = usb_sndctrlpipe(data->udev, 0x00);
1938
1939         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1940                              skb->data, skb->len, btusb_tx_complete, skb);
1941
1942         skb->dev = (void *)hdev;
1943
1944         return urb;
1945 }
1946
1947 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1948 {
1949         struct btusb_data *data = hci_get_drvdata(hdev);
1950         struct urb *urb;
1951         unsigned int pipe;
1952
1953         if (!data->bulk_tx_ep)
1954                 return ERR_PTR(-ENODEV);
1955
1956         urb = usb_alloc_urb(0, GFP_KERNEL);
1957         if (!urb)
1958                 return ERR_PTR(-ENOMEM);
1959
1960         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1961
1962         usb_fill_bulk_urb(urb, data->udev, pipe,
1963                           skb->data, skb->len, btusb_tx_complete, skb);
1964
1965         skb->dev = (void *)hdev;
1966
1967         return urb;
1968 }
1969
1970 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1971 {
1972         struct btusb_data *data = hci_get_drvdata(hdev);
1973         struct urb *urb;
1974         unsigned int pipe;
1975
1976         if (!data->isoc_tx_ep)
1977                 return ERR_PTR(-ENODEV);
1978
1979         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1980         if (!urb)
1981                 return ERR_PTR(-ENOMEM);
1982
1983         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1984
1985         usb_fill_int_urb(urb, data->udev, pipe,
1986                          skb->data, skb->len, btusb_isoc_tx_complete,
1987                          skb, data->isoc_tx_ep->bInterval);
1988
1989         urb->transfer_flags  = URB_ISO_ASAP;
1990
1991         if (data->isoc_altsetting == 6)
1992                 __fill_isoc_descriptor_msbc(urb, skb->len,
1993                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1994                                             data);
1995         else
1996                 __fill_isoc_descriptor(urb, skb->len,
1997                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1998         skb->dev = (void *)hdev;
1999
2000         return urb;
2001 }
2002
2003 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
2004 {
2005         struct btusb_data *data = hci_get_drvdata(hdev);
2006         int err;
2007
2008         usb_anchor_urb(urb, &data->tx_anchor);
2009
2010         err = usb_submit_urb(urb, GFP_KERNEL);
2011         if (err < 0) {
2012                 if (err != -EPERM && err != -ENODEV)
2013                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2014                                    urb, -err);
2015                 kfree(urb->setup_packet);
2016                 usb_unanchor_urb(urb);
2017         } else {
2018                 usb_mark_last_busy(data->udev);
2019         }
2020
2021         usb_free_urb(urb);
2022         return err;
2023 }
2024
2025 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
2026 {
2027         struct btusb_data *data = hci_get_drvdata(hdev);
2028         unsigned long flags;
2029         bool suspending;
2030
2031         spin_lock_irqsave(&data->txlock, flags);
2032         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
2033         if (!suspending)
2034                 data->tx_in_flight++;
2035         spin_unlock_irqrestore(&data->txlock, flags);
2036
2037         if (!suspending)
2038                 return submit_tx_urb(hdev, urb);
2039
2040         usb_anchor_urb(urb, &data->deferred);
2041         schedule_work(&data->waker);
2042
2043         usb_free_urb(urb);
2044         return 0;
2045 }
2046
2047 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
2048 {
2049         struct urb *urb;
2050
2051         BT_DBG("%s", hdev->name);
2052
2053         switch (hci_skb_pkt_type(skb)) {
2054         case HCI_COMMAND_PKT:
2055                 urb = alloc_ctrl_urb(hdev, skb);
2056                 if (IS_ERR(urb))
2057                         return PTR_ERR(urb);
2058
2059                 hdev->stat.cmd_tx++;
2060                 return submit_or_queue_tx_urb(hdev, urb);
2061
2062         case HCI_ACLDATA_PKT:
2063                 urb = alloc_bulk_urb(hdev, skb);
2064                 if (IS_ERR(urb))
2065                         return PTR_ERR(urb);
2066
2067                 hdev->stat.acl_tx++;
2068                 return submit_or_queue_tx_urb(hdev, urb);
2069
2070         case HCI_SCODATA_PKT:
2071                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2072                         return -ENODEV;
2073
2074                 urb = alloc_isoc_urb(hdev, skb);
2075                 if (IS_ERR(urb))
2076                         return PTR_ERR(urb);
2077
2078                 hdev->stat.sco_tx++;
2079                 return submit_tx_urb(hdev, urb);
2080
2081         case HCI_ISODATA_PKT:
2082                 urb = alloc_bulk_urb(hdev, skb);
2083                 if (IS_ERR(urb))
2084                         return PTR_ERR(urb);
2085
2086                 return submit_or_queue_tx_urb(hdev, urb);
2087         }
2088
2089         return -EILSEQ;
2090 }
2091
2092 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
2093 {
2094         struct btusb_data *data = hci_get_drvdata(hdev);
2095
2096         BT_DBG("%s evt %d", hdev->name, evt);
2097
2098         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
2099                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
2100                 data->air_mode = evt;
2101                 schedule_work(&data->work);
2102         }
2103 }
2104
2105 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
2106 {
2107         struct btusb_data *data = hci_get_drvdata(hdev);
2108         struct usb_interface *intf = data->isoc;
2109         struct usb_endpoint_descriptor *ep_desc;
2110         int i, err;
2111
2112         if (!data->isoc)
2113                 return -ENODEV;
2114
2115         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
2116         if (err < 0) {
2117                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
2118                 return err;
2119         }
2120
2121         data->isoc_altsetting = altsetting;
2122
2123         data->isoc_tx_ep = NULL;
2124         data->isoc_rx_ep = NULL;
2125
2126         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2127                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2128
2129                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2130                         data->isoc_tx_ep = ep_desc;
2131                         continue;
2132                 }
2133
2134                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2135                         data->isoc_rx_ep = ep_desc;
2136                         continue;
2137                 }
2138         }
2139
2140         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2141                 bt_dev_err(hdev, "invalid SCO descriptors");
2142                 return -ENODEV;
2143         }
2144
2145         return 0;
2146 }
2147
2148 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2149 {
2150         struct btusb_data *data = hci_get_drvdata(hdev);
2151         int err;
2152
2153         if (data->isoc_altsetting != new_alts) {
2154                 unsigned long flags;
2155
2156                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2157                 usb_kill_anchored_urbs(&data->isoc_anchor);
2158
2159                 /* When isochronous alternate setting needs to be
2160                  * changed, because SCO connection has been added
2161                  * or removed, a packet fragment may be left in the
2162                  * reassembling state. This could lead to wrongly
2163                  * assembled fragments.
2164                  *
2165                  * Clear outstanding fragment when selecting a new
2166                  * alternate setting.
2167                  */
2168                 spin_lock_irqsave(&data->rxlock, flags);
2169                 dev_kfree_skb_irq(data->sco_skb);
2170                 data->sco_skb = NULL;
2171                 spin_unlock_irqrestore(&data->rxlock, flags);
2172
2173                 err = __set_isoc_interface(hdev, new_alts);
2174                 if (err < 0)
2175                         return err;
2176         }
2177
2178         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2179                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2180                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2181                 else
2182                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2183         }
2184
2185         return 0;
2186 }
2187
2188 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2189                                                         int alt)
2190 {
2191         struct usb_interface *intf = data->isoc;
2192         int i;
2193
2194         BT_DBG("Looking for Alt no :%d", alt);
2195
2196         if (!intf)
2197                 return NULL;
2198
2199         for (i = 0; i < intf->num_altsetting; i++) {
2200                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
2201                         return &intf->altsetting[i];
2202         }
2203
2204         return NULL;
2205 }
2206
2207 static void btusb_work(struct work_struct *work)
2208 {
2209         struct btusb_data *data = container_of(work, struct btusb_data, work);
2210         struct hci_dev *hdev = data->hdev;
2211         int new_alts = 0;
2212         int err;
2213
2214         if (data->sco_num > 0) {
2215                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2216                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2217                         if (err < 0) {
2218                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2219                                 usb_kill_anchored_urbs(&data->isoc_anchor);
2220                                 return;
2221                         }
2222
2223                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2224                 }
2225
2226                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2227                         if (hdev->voice_setting & 0x0020) {
2228                                 static const int alts[3] = { 2, 4, 5 };
2229
2230                                 new_alts = alts[data->sco_num - 1];
2231                         } else {
2232                                 new_alts = data->sco_num;
2233                         }
2234                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2235                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
2236                          * many adapters do not support it.  Alt 1 appears to
2237                          * work for all adapters that do not have alt 6, and
2238                          * which work with WBS at all.  Some devices prefer
2239                          * alt 3 (HCI payload >= 60 Bytes let air packet
2240                          * data satisfy 60 bytes), requiring
2241                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2242                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2243                          */
2244                         if (btusb_find_altsetting(data, 6))
2245                                 new_alts = 6;
2246                         else if (btusb_find_altsetting(data, 3) &&
2247                                  hdev->sco_mtu >= 72 &&
2248                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2249                                 new_alts = 3;
2250                         else
2251                                 new_alts = 1;
2252                 }
2253
2254                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2255                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2256         } else {
2257                 usb_kill_anchored_urbs(&data->isoc_anchor);
2258
2259                 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2260                         __set_isoc_interface(hdev, 0);
2261
2262                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2263                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2264         }
2265 }
2266
2267 static void btusb_waker(struct work_struct *work)
2268 {
2269         struct btusb_data *data = container_of(work, struct btusb_data, waker);
2270         int err;
2271
2272         err = usb_autopm_get_interface(data->intf);
2273         if (err < 0)
2274                 return;
2275
2276         usb_autopm_put_interface(data->intf);
2277 }
2278
2279 static void btusb_rx_work(struct work_struct *work)
2280 {
2281         struct btusb_data *data = container_of(work, struct btusb_data,
2282                                                rx_work.work);
2283         struct sk_buff *skb;
2284
2285         /* Dequeue ACL data received during the interval */
2286         while ((skb = skb_dequeue(&data->acl_q)))
2287                 data->recv_acl(data->hdev, skb);
2288 }
2289
2290 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2291 {
2292         struct sk_buff *skb;
2293         u8 val = 0x00;
2294
2295         BT_DBG("%s", hdev->name);
2296
2297         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2298         if (IS_ERR(skb))
2299                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2300         else
2301                 kfree_skb(skb);
2302
2303         return 0;
2304 }
2305
2306 static int btusb_setup_csr(struct hci_dev *hdev)
2307 {
2308         struct btusb_data *data = hci_get_drvdata(hdev);
2309         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2310         struct hci_rp_read_local_version *rp;
2311         struct sk_buff *skb;
2312         bool is_fake = false;
2313         int ret;
2314
2315         BT_DBG("%s", hdev->name);
2316
2317         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2318                              HCI_INIT_TIMEOUT);
2319         if (IS_ERR(skb)) {
2320                 int err = PTR_ERR(skb);
2321                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2322                 return err;
2323         }
2324
2325         rp = skb_pull_data(skb, sizeof(*rp));
2326         if (!rp) {
2327                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2328                 kfree_skb(skb);
2329                 return -EIO;
2330         }
2331
2332         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2333                     rp->hci_ver, le16_to_cpu(rp->hci_rev));
2334
2335         bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2336                     rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2337                     le16_to_cpu(rp->manufacturer));
2338
2339         /* Detect a wide host of Chinese controllers that aren't CSR.
2340          *
2341          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2342          *
2343          * The main thing they have in common is that these are really popular low-cost
2344          * options that support newer Bluetooth versions but rely on heavy VID/PID
2345          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2346          *
2347          * We detect actual CSR devices by checking that the HCI manufacturer code
2348          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2349          * HCI rev values always match. As they both store the firmware number.
2350          */
2351         if (le16_to_cpu(rp->manufacturer) != 10 ||
2352             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2353                 is_fake = true;
2354
2355         /* Known legit CSR firmware build numbers and their supported BT versions:
2356          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2357          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2358          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2359          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2360          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2361          *
2362          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2363          *      support BT 1.1 only; so it's a dead giveaway when some
2364          *      third-party BT 4.0 dongle reuses it.
2365          */
2366         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2367                  rp->hci_ver > BLUETOOTH_VER_1_1)
2368                 is_fake = true;
2369
2370         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2371                  rp->hci_ver > BLUETOOTH_VER_1_2)
2372                 is_fake = true;
2373
2374         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2375                  rp->hci_ver > BLUETOOTH_VER_2_0)
2376                 is_fake = true;
2377
2378         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2379                  rp->hci_ver > BLUETOOTH_VER_2_1)
2380                 is_fake = true;
2381
2382         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2383                  rp->hci_ver > BLUETOOTH_VER_4_0)
2384                 is_fake = true;
2385
2386         /* Other clones which beat all the above checks */
2387         else if (bcdDevice == 0x0134 &&
2388                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2389                  rp->hci_ver == BLUETOOTH_VER_2_0)
2390                 is_fake = true;
2391
2392         if (is_fake) {
2393                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2394
2395                 /* Generally these clones have big discrepancies between
2396                  * advertised features and what's actually supported.
2397                  * Probably will need to be expanded in the future;
2398                  * without these the controller will lock up.
2399                  */
2400                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2401                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
2402                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2403                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2404
2405                 /* Clear the reset quirk since this is not an actual
2406                  * early Bluetooth 1.1 device from CSR.
2407                  */
2408                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2409                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2410
2411                 /*
2412                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2413                  *
2414                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2415                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2416                  *
2417                  * These controllers are really messed-up.
2418                  *
2419                  * 1. Their bulk RX endpoint will never report any data unless
2420                  *    the device was suspended at least once (yes, really).
2421                  * 2. They will not wakeup when autosuspended and receiving data
2422                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2423                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2424                  *
2425                  * To fix 1. enable runtime-suspend, force-suspend the
2426                  * HCI and then wake-it up by disabling runtime-suspend.
2427                  *
2428                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2429                  * will still be autosuspended when it is not open.
2430                  *
2431                  * --
2432                  *
2433                  * Because these are widespread problems we prefer generic solutions; so
2434                  * apply this initialization quirk to every controller that gets here,
2435                  * it should be harmless. The alternative is to not work at all.
2436                  */
2437                 pm_runtime_allow(&data->udev->dev);
2438
2439                 ret = pm_runtime_suspend(&data->udev->dev);
2440                 if (ret >= 0)
2441                         msleep(200);
2442                 else
2443                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2444
2445                 pm_runtime_forbid(&data->udev->dev);
2446
2447                 device_set_wakeup_capable(&data->udev->dev, false);
2448
2449                 /* Re-enable autosuspend if this was requested */
2450                 if (enable_autosuspend)
2451                         usb_enable_autosuspend(data->udev);
2452         }
2453
2454         kfree_skb(skb);
2455
2456         return 0;
2457 }
2458
2459 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2460 {
2461         struct sk_buff *skb;
2462         struct hci_event_hdr *hdr;
2463         struct hci_ev_cmd_complete *evt;
2464
2465         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2466         if (!skb)
2467                 return -ENOMEM;
2468
2469         hdr = skb_put(skb, sizeof(*hdr));
2470         hdr->evt = HCI_EV_CMD_COMPLETE;
2471         hdr->plen = sizeof(*evt) + 1;
2472
2473         evt = skb_put(skb, sizeof(*evt));
2474         evt->ncmd = 0x01;
2475         evt->opcode = cpu_to_le16(opcode);
2476
2477         skb_put_u8(skb, 0x00);
2478
2479         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2480
2481         return hci_recv_frame(hdev, skb);
2482 }
2483
2484 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2485                                  int count)
2486 {
2487         struct hci_dev *hdev = data->hdev;
2488
2489         /* When the device is in bootloader mode, then it can send
2490          * events via the bulk endpoint. These events are treated the
2491          * same way as the ones received from the interrupt endpoint.
2492          */
2493         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2494                 return btusb_recv_intr(data, buffer, count);
2495
2496         return btusb_recv_bulk(data, buffer, count);
2497 }
2498
2499 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2500 {
2501         struct urb *urb;
2502
2503         BT_DBG("%s", hdev->name);
2504
2505         switch (hci_skb_pkt_type(skb)) {
2506         case HCI_COMMAND_PKT:
2507                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2508                         struct hci_command_hdr *cmd = (void *)skb->data;
2509                         __u16 opcode = le16_to_cpu(cmd->opcode);
2510
2511                         /* When in bootloader mode and the command 0xfc09
2512                          * is received, it needs to be send down the
2513                          * bulk endpoint. So allocate a bulk URB instead.
2514                          */
2515                         if (opcode == 0xfc09)
2516                                 urb = alloc_bulk_urb(hdev, skb);
2517                         else
2518                                 urb = alloc_ctrl_urb(hdev, skb);
2519
2520                         /* When the 0xfc01 command is issued to boot into
2521                          * the operational firmware, it will actually not
2522                          * send a command complete event. To keep the flow
2523                          * control working inject that event here.
2524                          */
2525                         if (opcode == 0xfc01)
2526                                 inject_cmd_complete(hdev, opcode);
2527                 } else {
2528                         urb = alloc_ctrl_urb(hdev, skb);
2529                 }
2530                 if (IS_ERR(urb))
2531                         return PTR_ERR(urb);
2532
2533                 hdev->stat.cmd_tx++;
2534                 return submit_or_queue_tx_urb(hdev, urb);
2535
2536         case HCI_ACLDATA_PKT:
2537                 urb = alloc_bulk_urb(hdev, skb);
2538                 if (IS_ERR(urb))
2539                         return PTR_ERR(urb);
2540
2541                 hdev->stat.acl_tx++;
2542                 return submit_or_queue_tx_urb(hdev, urb);
2543
2544         case HCI_SCODATA_PKT:
2545                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2546                         return -ENODEV;
2547
2548                 urb = alloc_isoc_urb(hdev, skb);
2549                 if (IS_ERR(urb))
2550                         return PTR_ERR(urb);
2551
2552                 hdev->stat.sco_tx++;
2553                 return submit_tx_urb(hdev, urb);
2554
2555         case HCI_ISODATA_PKT:
2556                 urb = alloc_bulk_urb(hdev, skb);
2557                 if (IS_ERR(urb))
2558                         return PTR_ERR(urb);
2559
2560                 return submit_or_queue_tx_urb(hdev, urb);
2561         }
2562
2563         return -EILSEQ;
2564 }
2565
2566 static int btusb_setup_realtek(struct hci_dev *hdev)
2567 {
2568         struct btusb_data *data = hci_get_drvdata(hdev);
2569         int ret;
2570
2571         ret = btrtl_setup_realtek(hdev);
2572
2573         if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2574                 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2575
2576         return ret;
2577 }
2578
2579 static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
2580 {
2581         if (skb->data[0] == HCI_VENDOR_PKT && skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) {
2582                 struct rtk_dev_coredump_hdr hdr = {
2583                         .code = RTK_DEVCOREDUMP_CODE_MEMDUMP,
2584                 };
2585
2586                 bt_dev_dbg(hdev, "RTL: received coredump vendor evt, len %u",
2587                         skb->len);
2588
2589                 btusb_rtl_alloc_devcoredump(hdev, &hdr, skb->data, skb->len);
2590                 kfree_skb(skb);
2591
2592                 return 0;
2593         }
2594
2595         return hci_recv_frame(hdev, skb);
2596 }
2597
2598 /* UHW CR mapping */
2599 #define MTK_BT_MISC             0x70002510
2600 #define MTK_BT_SUBSYS_RST       0x70002610
2601 #define MTK_UDMA_INT_STA_BT     0x74000024
2602 #define MTK_UDMA_INT_STA_BT1    0x74000308
2603 #define MTK_BT_WDT_STATUS       0x740003A0
2604 #define MTK_EP_RST_OPT          0x74011890
2605 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2606 #define MTK_BT_RST_DONE         0x00000100
2607 #define MTK_BT_RESET_REG_CONNV3 0x70028610
2608 #define MTK_BT_READ_DEV_ID      0x70010200
2609
2610
2611 static void btusb_mtk_wmt_recv(struct urb *urb)
2612 {
2613         struct hci_dev *hdev = urb->context;
2614         struct btusb_data *data = hci_get_drvdata(hdev);
2615         struct sk_buff *skb;
2616         int err;
2617
2618         if (urb->status == 0 && urb->actual_length > 0) {
2619                 hdev->stat.byte_rx += urb->actual_length;
2620
2621                 /* WMT event shouldn't be fragmented and the size should be
2622                  * less than HCI_WMT_MAX_EVENT_SIZE.
2623                  */
2624                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2625                 if (!skb) {
2626                         hdev->stat.err_rx++;
2627                         kfree(urb->setup_packet);
2628                         return;
2629                 }
2630
2631                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2632                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2633
2634                 /* When someone waits for the WMT event, the skb is being cloned
2635                  * and being processed the events from there then.
2636                  */
2637                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2638                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2639                         if (!data->evt_skb) {
2640                                 kfree_skb(skb);
2641                                 kfree(urb->setup_packet);
2642                                 return;
2643                         }
2644                 }
2645
2646                 err = hci_recv_frame(hdev, skb);
2647                 if (err < 0) {
2648                         kfree_skb(data->evt_skb);
2649                         data->evt_skb = NULL;
2650                         kfree(urb->setup_packet);
2651                         return;
2652                 }
2653
2654                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2655                                        &data->flags)) {
2656                         /* Barrier to sync with other CPUs */
2657                         smp_mb__after_atomic();
2658                         wake_up_bit(&data->flags,
2659                                     BTUSB_TX_WAIT_VND_EVT);
2660                 }
2661                 kfree(urb->setup_packet);
2662                 return;
2663         } else if (urb->status == -ENOENT) {
2664                 /* Avoid suspend failed when usb_kill_urb */
2665                 return;
2666         }
2667
2668         usb_mark_last_busy(data->udev);
2669
2670         /* The URB complete handler is still called with urb->actual_length = 0
2671          * when the event is not available, so we should keep re-submitting
2672          * URB until WMT event returns, Also, It's necessary to wait some time
2673          * between the two consecutive control URBs to relax the target device
2674          * to generate the event. Otherwise, the WMT event cannot return from
2675          * the device successfully.
2676          */
2677         udelay(500);
2678
2679         usb_anchor_urb(urb, &data->ctrl_anchor);
2680         err = usb_submit_urb(urb, GFP_ATOMIC);
2681         if (err < 0) {
2682                 kfree(urb->setup_packet);
2683                 /* -EPERM: urb is being killed;
2684                  * -ENODEV: device got disconnected
2685                  */
2686                 if (err != -EPERM && err != -ENODEV)
2687                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2688                                    urb, -err);
2689                 usb_unanchor_urb(urb);
2690         }
2691 }
2692
2693 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2694 {
2695         struct btusb_data *data = hci_get_drvdata(hdev);
2696         struct usb_ctrlrequest *dr;
2697         unsigned char *buf;
2698         int err, size = 64;
2699         unsigned int pipe;
2700         struct urb *urb;
2701
2702         urb = usb_alloc_urb(0, GFP_KERNEL);
2703         if (!urb)
2704                 return -ENOMEM;
2705
2706         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2707         if (!dr) {
2708                 usb_free_urb(urb);
2709                 return -ENOMEM;
2710         }
2711
2712         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2713         dr->bRequest     = 1;
2714         dr->wIndex       = cpu_to_le16(0);
2715         dr->wValue       = cpu_to_le16(48);
2716         dr->wLength      = cpu_to_le16(size);
2717
2718         buf = kmalloc(size, GFP_KERNEL);
2719         if (!buf) {
2720                 kfree(dr);
2721                 usb_free_urb(urb);
2722                 return -ENOMEM;
2723         }
2724
2725         pipe = usb_rcvctrlpipe(data->udev, 0);
2726
2727         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2728                              buf, size, btusb_mtk_wmt_recv, hdev);
2729
2730         urb->transfer_flags |= URB_FREE_BUFFER;
2731
2732         usb_anchor_urb(urb, &data->ctrl_anchor);
2733         err = usb_submit_urb(urb, GFP_KERNEL);
2734         if (err < 0) {
2735                 if (err != -EPERM && err != -ENODEV)
2736                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2737                                    urb, -err);
2738                 usb_unanchor_urb(urb);
2739         }
2740
2741         usb_free_urb(urb);
2742
2743         return err;
2744 }
2745
2746 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2747                                   struct btmtk_hci_wmt_params *wmt_params)
2748 {
2749         struct btusb_data *data = hci_get_drvdata(hdev);
2750         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2751         u32 hlen, status = BTMTK_WMT_INVALID;
2752         struct btmtk_hci_wmt_evt *wmt_evt;
2753         struct btmtk_hci_wmt_cmd *wc;
2754         struct btmtk_wmt_hdr *hdr;
2755         int err;
2756
2757         /* Send the WMT command and wait until the WMT event returns */
2758         hlen = sizeof(*hdr) + wmt_params->dlen;
2759         if (hlen > 255)
2760                 return -EINVAL;
2761
2762         wc = kzalloc(hlen, GFP_KERNEL);
2763         if (!wc)
2764                 return -ENOMEM;
2765
2766         hdr = &wc->hdr;
2767         hdr->dir = 1;
2768         hdr->op = wmt_params->op;
2769         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2770         hdr->flag = wmt_params->flag;
2771         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2772
2773         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2774
2775         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
2776          * it needs constantly polling control pipe until the host received the
2777          * WMT event, thus, we should require to specifically acquire PM counter
2778          * on the USB to prevent the interface from entering auto suspended
2779          * while WMT cmd/event in progress.
2780          */
2781         err = usb_autopm_get_interface(data->intf);
2782         if (err < 0)
2783                 goto err_free_wc;
2784
2785         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2786
2787         if (err < 0) {
2788                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2789                 usb_autopm_put_interface(data->intf);
2790                 goto err_free_wc;
2791         }
2792
2793         /* Submit control IN URB on demand to process the WMT event */
2794         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2795
2796         usb_autopm_put_interface(data->intf);
2797
2798         if (err < 0)
2799                 goto err_free_wc;
2800
2801         /* The vendor specific WMT commands are all answered by a vendor
2802          * specific event and will have the Command Status or Command
2803          * Complete as with usual HCI command flow control.
2804          *
2805          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2806          * state to be cleared. The driver specific event receive routine
2807          * will clear that state and with that indicate completion of the
2808          * WMT command.
2809          */
2810         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2811                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2812         if (err == -EINTR) {
2813                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2814                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2815                 goto err_free_wc;
2816         }
2817
2818         if (err) {
2819                 bt_dev_err(hdev, "Execution of wmt command timed out");
2820                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2821                 err = -ETIMEDOUT;
2822                 goto err_free_wc;
2823         }
2824
2825         if (data->evt_skb == NULL)
2826                 goto err_free_wc;
2827
2828         /* Parse and handle the return WMT event */
2829         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2830         if (wmt_evt->whdr.op != hdr->op) {
2831                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2832                            wmt_evt->whdr.op, hdr->op);
2833                 err = -EIO;
2834                 goto err_free_skb;
2835         }
2836
2837         switch (wmt_evt->whdr.op) {
2838         case BTMTK_WMT_SEMAPHORE:
2839                 if (wmt_evt->whdr.flag == 2)
2840                         status = BTMTK_WMT_PATCH_UNDONE;
2841                 else
2842                         status = BTMTK_WMT_PATCH_DONE;
2843                 break;
2844         case BTMTK_WMT_FUNC_CTRL:
2845                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2846                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2847                         status = BTMTK_WMT_ON_DONE;
2848                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2849                         status = BTMTK_WMT_ON_PROGRESS;
2850                 else
2851                         status = BTMTK_WMT_ON_UNDONE;
2852                 break;
2853         case BTMTK_WMT_PATCH_DWNLD:
2854                 if (wmt_evt->whdr.flag == 2)
2855                         status = BTMTK_WMT_PATCH_DONE;
2856                 else if (wmt_evt->whdr.flag == 1)
2857                         status = BTMTK_WMT_PATCH_PROGRESS;
2858                 else
2859                         status = BTMTK_WMT_PATCH_UNDONE;
2860                 break;
2861         }
2862
2863         if (wmt_params->status)
2864                 *wmt_params->status = status;
2865
2866 err_free_skb:
2867         kfree_skb(data->evt_skb);
2868         data->evt_skb = NULL;
2869 err_free_wc:
2870         kfree(wc);
2871         return err;
2872 }
2873
2874 static int btusb_mtk_func_query(struct hci_dev *hdev)
2875 {
2876         struct btmtk_hci_wmt_params wmt_params;
2877         int status, err;
2878         u8 param = 0;
2879
2880         /* Query whether the function is enabled */
2881         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2882         wmt_params.flag = 4;
2883         wmt_params.dlen = sizeof(param);
2884         wmt_params.data = &param;
2885         wmt_params.status = &status;
2886
2887         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2888         if (err < 0) {
2889                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2890                 return err;
2891         }
2892
2893         return status;
2894 }
2895
2896 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2897 {
2898         struct hci_dev *hdev = data->hdev;
2899         int pipe, err;
2900         void *buf;
2901
2902         buf = kzalloc(4, GFP_KERNEL);
2903         if (!buf)
2904                 return -ENOMEM;
2905
2906         put_unaligned_le32(val, buf);
2907
2908         pipe = usb_sndctrlpipe(data->udev, 0);
2909         err = usb_control_msg(data->udev, pipe, 0x02,
2910                               0x5E,
2911                               reg >> 16, reg & 0xffff,
2912                               buf, 4, USB_CTRL_SET_TIMEOUT);
2913         if (err < 0) {
2914                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2915                 goto err_free_buf;
2916         }
2917
2918 err_free_buf:
2919         kfree(buf);
2920
2921         return err;
2922 }
2923
2924 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2925 {
2926         struct hci_dev *hdev = data->hdev;
2927         int pipe, err;
2928         void *buf;
2929
2930         buf = kzalloc(4, GFP_KERNEL);
2931         if (!buf)
2932                 return -ENOMEM;
2933
2934         pipe = usb_rcvctrlpipe(data->udev, 0);
2935         err = usb_control_msg(data->udev, pipe, 0x01,
2936                               0xDE,
2937                               reg >> 16, reg & 0xffff,
2938                               buf, 4, USB_CTRL_SET_TIMEOUT);
2939         if (err < 0) {
2940                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2941                 goto err_free_buf;
2942         }
2943
2944         *val = get_unaligned_le32(buf);
2945         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2946
2947 err_free_buf:
2948         kfree(buf);
2949
2950         return err;
2951 }
2952
2953 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2954 {
2955         int pipe, err, size = sizeof(u32);
2956         void *buf;
2957
2958         buf = kzalloc(size, GFP_KERNEL);
2959         if (!buf)
2960                 return -ENOMEM;
2961
2962         pipe = usb_rcvctrlpipe(data->udev, 0);
2963         err = usb_control_msg(data->udev, pipe, 0x63,
2964                               USB_TYPE_VENDOR | USB_DIR_IN,
2965                               reg >> 16, reg & 0xffff,
2966                               buf, size, USB_CTRL_SET_TIMEOUT);
2967         if (err < 0)
2968                 goto err_free_buf;
2969
2970         *val = get_unaligned_le32(buf);
2971
2972 err_free_buf:
2973         kfree(buf);
2974
2975         return err;
2976 }
2977
2978 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2979 {
2980         return btusb_mtk_reg_read(data, reg, id);
2981 }
2982
2983 static u32 btusb_mtk_reset_done(struct hci_dev *hdev)
2984 {
2985         struct btusb_data *data = hci_get_drvdata(hdev);
2986         u32 val = 0;
2987
2988         btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
2989
2990         return val & MTK_BT_RST_DONE;
2991 }
2992
2993 static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
2994 {
2995         struct btusb_data *data = hci_get_drvdata(hdev);
2996         struct btmediatek_data *mediatek;
2997         u32 val;
2998         int err;
2999
3000         /* It's MediaTek specific bluetooth reset mechanism via USB */
3001         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
3002                 bt_dev_err(hdev, "last reset failed? Not resetting again");
3003                 return -EBUSY;
3004         }
3005
3006         err = usb_autopm_get_interface(data->intf);
3007         if (err < 0)
3008                 return err;
3009
3010         btusb_stop_traffic(data);
3011         usb_kill_anchored_urbs(&data->tx_anchor);
3012         mediatek = hci_get_priv(hdev);
3013
3014         if (mediatek->dev_id == 0x7925) {
3015                 btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
3016                 val |= (1 << 5);
3017                 btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
3018                 btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
3019                 val &= 0xFFFF00FF;
3020                 val |= (1 << 13);
3021                 btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
3022                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001);
3023                 btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
3024                 val |= (1 << 0);
3025                 btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
3026                 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3027                 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3028                 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3029                 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3030                 msleep(100);
3031         } else {
3032                 /* It's Device EndPoint Reset Option Register */
3033                 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
3034                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3035                 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
3036
3037                 /* Reset the bluetooth chip via USB interface. */
3038                 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
3039                 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
3040                 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
3041                 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
3042                 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
3043                 /* MT7921 need to delay 20ms between toggle reset bit */
3044                 msleep(20);
3045                 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
3046                 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
3047         }
3048
3049         err = readx_poll_timeout(btusb_mtk_reset_done, hdev, val,
3050                                  val & MTK_BT_RST_DONE, 20000, 1000000);
3051         if (err < 0)
3052                 bt_dev_err(hdev, "Reset timeout");
3053
3054         btusb_mtk_id_get(data, 0x70010200, &val);
3055         if (!val)
3056                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
3057
3058         usb_queue_reset_device(data->intf);
3059
3060         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
3061
3062         return err;
3063 }
3064
3065 static int btusb_mtk_setup(struct hci_dev *hdev)
3066 {
3067         struct btusb_data *data = hci_get_drvdata(hdev);
3068         struct btmtk_hci_wmt_params wmt_params;
3069         ktime_t calltime, delta, rettime;
3070         struct btmtk_tci_sleep tci_sleep;
3071         unsigned long long duration;
3072         struct sk_buff *skb;
3073         const char *fwname;
3074         int err, status;
3075         u32 dev_id = 0;
3076         char fw_bin_name[64];
3077         u32 fw_version = 0;
3078         u8 param;
3079         struct btmediatek_data *mediatek;
3080
3081         calltime = ktime_get();
3082
3083         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3084         if (err < 0) {
3085                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3086                 return err;
3087         }
3088
3089         if (!dev_id || dev_id != 0x7663) {
3090                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
3091                 if (err < 0) {
3092                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
3093                         return err;
3094                 }
3095                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
3096                 if (err < 0) {
3097                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
3098                         return err;
3099                 }
3100         }
3101
3102         mediatek = hci_get_priv(hdev);
3103         mediatek->dev_id = dev_id;
3104         mediatek->reset_sync = btusb_mtk_reset;
3105
3106         err = btmtk_register_coredump(hdev, btusb_driver.name, fw_version);
3107         if (err < 0)
3108                 bt_dev_err(hdev, "Failed to register coredump (%d)", err);
3109
3110         switch (dev_id) {
3111         case 0x7663:
3112                 fwname = FIRMWARE_MT7663;
3113                 break;
3114         case 0x7668:
3115                 fwname = FIRMWARE_MT7668;
3116                 break;
3117         case 0x7922:
3118         case 0x7961:
3119         case 0x7925:
3120                 if (dev_id == 0x7925)
3121                         snprintf(fw_bin_name, sizeof(fw_bin_name),
3122                                  "mediatek/mt%04x/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3123                                  dev_id & 0xffff, dev_id & 0xffff, (fw_version & 0xff) + 1);
3124                 else
3125                         snprintf(fw_bin_name, sizeof(fw_bin_name),
3126                                  "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3127                                  dev_id & 0xffff, (fw_version & 0xff) + 1);
3128
3129                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
3130                                                 btusb_mtk_hci_wmt_sync);
3131                 if (err < 0) {
3132                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
3133                         return err;
3134                 }
3135
3136                 /* It's Device EndPoint Reset Option Register */
3137                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
3138
3139                 /* Enable Bluetooth protocol */
3140                 param = 1;
3141                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3142                 wmt_params.flag = 0;
3143                 wmt_params.dlen = sizeof(param);
3144                 wmt_params.data = &param;
3145                 wmt_params.status = NULL;
3146
3147                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3148                 if (err < 0) {
3149                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3150                         return err;
3151                 }
3152
3153                 hci_set_msft_opcode(hdev, 0xFD30);
3154                 hci_set_aosp_capable(hdev);
3155                 goto done;
3156         default:
3157                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
3158                            dev_id);
3159                 return -ENODEV;
3160         }
3161
3162         /* Query whether the firmware is already download */
3163         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3164         wmt_params.flag = 1;
3165         wmt_params.dlen = 0;
3166         wmt_params.data = NULL;
3167         wmt_params.status = &status;
3168
3169         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3170         if (err < 0) {
3171                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3172                 return err;
3173         }
3174
3175         if (status == BTMTK_WMT_PATCH_DONE) {
3176                 bt_dev_info(hdev, "firmware already downloaded");
3177                 goto ignore_setup_fw;
3178         }
3179
3180         /* Setup a firmware which the device definitely requires */
3181         err = btmtk_setup_firmware(hdev, fwname,
3182                                    btusb_mtk_hci_wmt_sync);
3183         if (err < 0)
3184                 return err;
3185
3186 ignore_setup_fw:
3187         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3188                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3189                                  2000, 5000000);
3190         /* -ETIMEDOUT happens */
3191         if (err < 0)
3192                 return err;
3193
3194         /* The other errors happen in btusb_mtk_func_query */
3195         if (status < 0)
3196                 return status;
3197
3198         if (status == BTMTK_WMT_ON_DONE) {
3199                 bt_dev_info(hdev, "function already on");
3200                 goto ignore_func_on;
3201         }
3202
3203         /* Enable Bluetooth protocol */
3204         param = 1;
3205         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3206         wmt_params.flag = 0;
3207         wmt_params.dlen = sizeof(param);
3208         wmt_params.data = &param;
3209         wmt_params.status = NULL;
3210
3211         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3212         if (err < 0) {
3213                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3214                 return err;
3215         }
3216
3217 ignore_func_on:
3218         /* Apply the low power environment setup */
3219         tci_sleep.mode = 0x5;
3220         tci_sleep.duration = cpu_to_le16(0x640);
3221         tci_sleep.host_duration = cpu_to_le16(0x640);
3222         tci_sleep.host_wakeup_pin = 0;
3223         tci_sleep.time_compensation = 0;
3224
3225         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3226                              HCI_INIT_TIMEOUT);
3227         if (IS_ERR(skb)) {
3228                 err = PTR_ERR(skb);
3229                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3230                 return err;
3231         }
3232         kfree_skb(skb);
3233
3234 done:
3235         rettime = ktime_get();
3236         delta = ktime_sub(rettime, calltime);
3237         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3238
3239         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3240
3241         return 0;
3242 }
3243
3244 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3245 {
3246         struct btmtk_hci_wmt_params wmt_params;
3247         u8 param = 0;
3248         int err;
3249
3250         /* Disable the device */
3251         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3252         wmt_params.flag = 0;
3253         wmt_params.dlen = sizeof(param);
3254         wmt_params.data = &param;
3255         wmt_params.status = NULL;
3256
3257         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3258         if (err < 0) {
3259                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3260                 return err;
3261         }
3262
3263         return 0;
3264 }
3265
3266 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
3267 {
3268         struct btusb_data *data = hci_get_drvdata(hdev);
3269         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
3270         struct sk_buff *skb_cd;
3271
3272         switch (handle) {
3273         case 0xfc6f:            /* Firmware dump from device */
3274                 /* When the firmware hangs, the device can no longer
3275                  * suspend and thus disable auto-suspend.
3276                  */
3277                 usb_disable_autosuspend(data->udev);
3278
3279                 /* We need to forward the diagnostic packet to userspace daemon
3280                  * for backward compatibility, so we have to clone the packet
3281                  * extraly for the in-kernel coredump support.
3282                  */
3283                 skb_cd = skb_clone(skb, GFP_ATOMIC);
3284                 if (skb_cd)
3285                         btmtk_process_coredump(hdev, skb_cd);
3286
3287                 fallthrough;
3288         case 0x05ff:            /* Firmware debug logging 1 */
3289         case 0x05fe:            /* Firmware debug logging 2 */
3290                 return hci_recv_diag(hdev, skb);
3291         }
3292
3293         return hci_recv_frame(hdev, skb);
3294 }
3295
3296 #ifdef CONFIG_PM
3297 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3298 static int marvell_config_oob_wake(struct hci_dev *hdev)
3299 {
3300         struct sk_buff *skb;
3301         struct btusb_data *data = hci_get_drvdata(hdev);
3302         struct device *dev = &data->udev->dev;
3303         u16 pin, gap, opcode;
3304         int ret;
3305         u8 cmd[5];
3306
3307         /* Move on if no wakeup pin specified */
3308         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3309             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3310                 return 0;
3311
3312         /* Vendor specific command to configure a GPIO as wake-up pin */
3313         opcode = hci_opcode_pack(0x3F, 0x59);
3314         cmd[0] = opcode & 0xFF;
3315         cmd[1] = opcode >> 8;
3316         cmd[2] = 2; /* length of parameters that follow */
3317         cmd[3] = pin;
3318         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3319
3320         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3321         if (!skb) {
3322                 bt_dev_err(hdev, "%s: No memory", __func__);
3323                 return -ENOMEM;
3324         }
3325
3326         skb_put_data(skb, cmd, sizeof(cmd));
3327         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3328
3329         ret = btusb_send_frame(hdev, skb);
3330         if (ret) {
3331                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3332                 kfree_skb(skb);
3333                 return ret;
3334         }
3335
3336         return 0;
3337 }
3338 #endif
3339
3340 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3341                                     const bdaddr_t *bdaddr)
3342 {
3343         struct sk_buff *skb;
3344         u8 buf[8];
3345         long ret;
3346
3347         buf[0] = 0xfe;
3348         buf[1] = sizeof(bdaddr_t);
3349         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3350
3351         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3352         if (IS_ERR(skb)) {
3353                 ret = PTR_ERR(skb);
3354                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3355                            ret);
3356                 return ret;
3357         }
3358         kfree_skb(skb);
3359
3360         return 0;
3361 }
3362
3363 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3364                                     const bdaddr_t *bdaddr)
3365 {
3366         struct sk_buff *skb;
3367         u8 buf[10];
3368         long ret;
3369
3370         buf[0] = 0x01;
3371         buf[1] = 0x01;
3372         buf[2] = 0x00;
3373         buf[3] = sizeof(bdaddr_t);
3374         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3375
3376         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3377         if (IS_ERR(skb)) {
3378                 ret = PTR_ERR(skb);
3379                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3380                 return ret;
3381         }
3382         kfree_skb(skb);
3383
3384         return 0;
3385 }
3386
3387 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3388                                 const bdaddr_t *bdaddr)
3389 {
3390         struct sk_buff *skb;
3391         u8 buf[6];
3392         long ret;
3393
3394         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3395
3396         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3397                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3398         if (IS_ERR(skb)) {
3399                 ret = PTR_ERR(skb);
3400                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3401                 return ret;
3402         }
3403         kfree_skb(skb);
3404
3405         return 0;
3406 }
3407
3408 #define QCA_MEMDUMP_ACL_HANDLE 0x2EDD
3409 #define QCA_MEMDUMP_SIZE_MAX  0x100000
3410 #define QCA_MEMDUMP_VSE_CLASS 0x01
3411 #define QCA_MEMDUMP_MSG_TYPE 0x08
3412 #define QCA_MEMDUMP_PKT_SIZE 248
3413 #define QCA_LAST_SEQUENCE_NUM 0xffff
3414
3415 struct qca_dump_hdr {
3416         u8 vse_class;
3417         u8 msg_type;
3418         __le16 seqno;
3419         u8 reserved;
3420         union {
3421                 u8 data[0];
3422                 struct {
3423                         __le32 ram_dump_size;
3424                         u8 data0[0];
3425                 } __packed;
3426         };
3427 } __packed;
3428
3429
3430 static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb)
3431 {
3432         char buf[128];
3433         struct btusb_data *btdata = hci_get_drvdata(hdev);
3434
3435         snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n",
3436                         btdata->qca_dump.controller_id);
3437         skb_put_data(skb, buf, strlen(buf));
3438
3439         snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n",
3440                         btdata->qca_dump.fw_version);
3441         skb_put_data(skb, buf, strlen(buf));
3442
3443         snprintf(buf, sizeof(buf), "Driver: %s\nVendor: qca\n",
3444                         btusb_driver.name);
3445         skb_put_data(skb, buf, strlen(buf));
3446
3447         snprintf(buf, sizeof(buf), "VID: 0x%x\nPID:0x%x\n",
3448                         btdata->qca_dump.id_vendor, btdata->qca_dump.id_product);
3449         skb_put_data(skb, buf, strlen(buf));
3450
3451         snprintf(buf, sizeof(buf), "Lmp Subversion: 0x%x\n",
3452                         hdev->lmp_subver);
3453         skb_put_data(skb, buf, strlen(buf));
3454 }
3455
3456 static void btusb_coredump_qca(struct hci_dev *hdev)
3457 {
3458         static const u8 param[] = { 0x26 };
3459         struct sk_buff *skb;
3460
3461         skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT);
3462         if (IS_ERR(skb))
3463                 bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb));
3464         kfree_skb(skb);
3465 }
3466
3467 /*
3468  * ==0: not a dump pkt.
3469  * < 0: fails to handle a dump pkt
3470  * > 0: otherwise.
3471  */
3472 static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3473 {
3474         int ret = 1;
3475         u8 pkt_type;
3476         u8 *sk_ptr;
3477         unsigned int sk_len;
3478         u16 seqno;
3479         u32 dump_size;
3480
3481         struct hci_event_hdr *event_hdr;
3482         struct hci_acl_hdr *acl_hdr;
3483         struct qca_dump_hdr *dump_hdr;
3484         struct btusb_data *btdata = hci_get_drvdata(hdev);
3485         struct usb_device *udev = btdata->udev;
3486
3487         pkt_type = hci_skb_pkt_type(skb);
3488         sk_ptr = skb->data;
3489         sk_len = skb->len;
3490
3491         if (pkt_type == HCI_ACLDATA_PKT) {
3492                 acl_hdr = hci_acl_hdr(skb);
3493                 if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE)
3494                         return 0;
3495                 sk_ptr += HCI_ACL_HDR_SIZE;
3496                 sk_len -= HCI_ACL_HDR_SIZE;
3497                 event_hdr = (struct hci_event_hdr *)sk_ptr;
3498         } else {
3499                 event_hdr = hci_event_hdr(skb);
3500         }
3501
3502         if ((event_hdr->evt != HCI_VENDOR_PKT)
3503                 || (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
3504                 return 0;
3505
3506         sk_ptr += HCI_EVENT_HDR_SIZE;
3507         sk_len -= HCI_EVENT_HDR_SIZE;
3508
3509         dump_hdr = (struct qca_dump_hdr *)sk_ptr;
3510         if ((sk_len < offsetof(struct qca_dump_hdr, data))
3511                 || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS)
3512             || (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
3513                 return 0;
3514
3515         /*it is dump pkt now*/
3516         seqno = le16_to_cpu(dump_hdr->seqno);
3517         if (seqno == 0) {
3518                 set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3519                 dump_size = le32_to_cpu(dump_hdr->ram_dump_size);
3520                 if (!dump_size || (dump_size > QCA_MEMDUMP_SIZE_MAX)) {
3521                         ret = -EILSEQ;
3522                         bt_dev_err(hdev, "Invalid memdump size(%u)",
3523                                    dump_size);
3524                         goto out;
3525                 }
3526
3527                 ret = hci_devcd_init(hdev, dump_size);
3528                 if (ret < 0) {
3529                         bt_dev_err(hdev, "memdump init error(%d)", ret);
3530                         goto out;
3531                 }
3532
3533                 btdata->qca_dump.ram_dump_size = dump_size;
3534                 btdata->qca_dump.ram_dump_seqno = 0;
3535                 sk_ptr += offsetof(struct qca_dump_hdr, data0);
3536                 sk_len -= offsetof(struct qca_dump_hdr, data0);
3537
3538                 usb_disable_autosuspend(udev);
3539                 bt_dev_info(hdev, "%s memdump size(%u)\n",
3540                             (pkt_type == HCI_ACLDATA_PKT) ? "ACL" : "event",
3541                             dump_size);
3542         } else {
3543                 sk_ptr += offsetof(struct qca_dump_hdr, data);
3544                 sk_len -= offsetof(struct qca_dump_hdr, data);
3545         }
3546
3547         if (!btdata->qca_dump.ram_dump_size) {
3548                 ret = -EINVAL;
3549                 bt_dev_err(hdev, "memdump is not active");
3550                 goto out;
3551         }
3552
3553         if ((seqno > btdata->qca_dump.ram_dump_seqno + 1) && (seqno != QCA_LAST_SEQUENCE_NUM)) {
3554                 dump_size = QCA_MEMDUMP_PKT_SIZE * (seqno - btdata->qca_dump.ram_dump_seqno - 1);
3555                 hci_devcd_append_pattern(hdev, 0x0, dump_size);
3556                 bt_dev_err(hdev,
3557                            "expected memdump seqno(%u) is not received(%u)\n",
3558                            btdata->qca_dump.ram_dump_seqno, seqno);
3559                 btdata->qca_dump.ram_dump_seqno = seqno;
3560                 kfree_skb(skb);
3561                 return ret;
3562         }
3563
3564         skb_pull(skb, skb->len - sk_len);
3565         hci_devcd_append(hdev, skb);
3566         btdata->qca_dump.ram_dump_seqno++;
3567         if (seqno == QCA_LAST_SEQUENCE_NUM) {
3568                 bt_dev_info(hdev,
3569                                 "memdump done: pkts(%u), total(%u)\n",
3570                                 btdata->qca_dump.ram_dump_seqno, btdata->qca_dump.ram_dump_size);
3571
3572                 hci_devcd_complete(hdev);
3573                 goto out;
3574         }
3575         return ret;
3576
3577 out:
3578         if (btdata->qca_dump.ram_dump_size)
3579                 usb_enable_autosuspend(udev);
3580         btdata->qca_dump.ram_dump_size = 0;
3581         btdata->qca_dump.ram_dump_seqno = 0;
3582         clear_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3583
3584         if (ret < 0)
3585                 kfree_skb(skb);
3586         return ret;
3587 }
3588
3589 static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb)
3590 {
3591         if (handle_dump_pkt_qca(hdev, skb))
3592                 return 0;
3593         return hci_recv_frame(hdev, skb);
3594 }
3595
3596 static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3597 {
3598         if (handle_dump_pkt_qca(hdev, skb))
3599                 return 0;
3600         return hci_recv_frame(hdev, skb);
3601 }
3602
3603
3604 #define QCA_DFU_PACKET_LEN      4096
3605
3606 #define QCA_GET_TARGET_VERSION  0x09
3607 #define QCA_CHECK_STATUS        0x05
3608 #define QCA_DFU_DOWNLOAD        0x01
3609
3610 #define QCA_SYSCFG_UPDATED      0x40
3611 #define QCA_PATCH_UPDATED       0x80
3612 #define QCA_DFU_TIMEOUT         3000
3613 #define QCA_FLAG_MULTI_NVM      0x80
3614 #define QCA_BT_RESET_WAIT_MS    100
3615
3616 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3617 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3618
3619 struct qca_version {
3620         __le32  rom_version;
3621         __le32  patch_version;
3622         __le32  ram_version;
3623         __u8    chip_id;
3624         __u8    platform_id;
3625         __le16  flag;
3626         __u8    reserved[4];
3627 } __packed;
3628
3629 struct qca_rampatch_version {
3630         __le16  rom_version_high;
3631         __le16  rom_version_low;
3632         __le16  patch_version;
3633 } __packed;
3634
3635 struct qca_device_info {
3636         u32     rom_version;
3637         u8      rampatch_hdr;   /* length of header in rampatch */
3638         u8      nvm_hdr;        /* length of header in NVM */
3639         u8      ver_offset;     /* offset of version structure in rampatch */
3640 };
3641
3642 static const struct qca_device_info qca_devices_table[] = {
3643         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3644         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3645         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3646         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3647         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3648         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3649         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3650         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3651         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3652         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3653 };
3654
3655 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3656                                      void *data, u16 size)
3657 {
3658         int pipe, err;
3659         u8 *buf;
3660
3661         buf = kmalloc(size, GFP_KERNEL);
3662         if (!buf)
3663                 return -ENOMEM;
3664
3665         /* Found some of USB hosts have IOT issues with ours so that we should
3666          * not wait until HCI layer is ready.
3667          */
3668         pipe = usb_rcvctrlpipe(udev, 0);
3669         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3670                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3671         if (err < 0) {
3672                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3673                 goto done;
3674         }
3675
3676         memcpy(data, buf, size);
3677
3678 done:
3679         kfree(buf);
3680
3681         return err;
3682 }
3683
3684 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3685                                        const struct firmware *firmware,
3686                                        size_t hdr_size)
3687 {
3688         struct btusb_data *btdata = hci_get_drvdata(hdev);
3689         struct usb_device *udev = btdata->udev;
3690         size_t count, size, sent = 0;
3691         int pipe, len, err;
3692         u8 *buf;
3693
3694         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3695         if (!buf)
3696                 return -ENOMEM;
3697
3698         count = firmware->size;
3699
3700         size = min_t(size_t, count, hdr_size);
3701         memcpy(buf, firmware->data, size);
3702
3703         /* USB patches should go down to controller through USB path
3704          * because binary format fits to go down through USB channel.
3705          * USB control path is for patching headers and USB bulk is for
3706          * patch body.
3707          */
3708         pipe = usb_sndctrlpipe(udev, 0);
3709         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3710                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3711         if (err < 0) {
3712                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3713                 goto done;
3714         }
3715
3716         sent += size;
3717         count -= size;
3718
3719         /* ep2 need time to switch from function acl to function dfu,
3720          * so we add 20ms delay here.
3721          */
3722         msleep(20);
3723
3724         while (count) {
3725                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3726
3727                 memcpy(buf, firmware->data + sent, size);
3728
3729                 pipe = usb_sndbulkpipe(udev, 0x02);
3730                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3731                                    QCA_DFU_TIMEOUT);
3732                 if (err < 0) {
3733                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3734                                    sent, firmware->size, err);
3735                         break;
3736                 }
3737
3738                 if (size != len) {
3739                         bt_dev_err(hdev, "Failed to get bulk buffer");
3740                         err = -EILSEQ;
3741                         break;
3742                 }
3743
3744                 sent  += size;
3745                 count -= size;
3746         }
3747
3748 done:
3749         kfree(buf);
3750         return err;
3751 }
3752
3753 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3754                                          struct qca_version *ver,
3755                                          const struct qca_device_info *info)
3756 {
3757         struct qca_rampatch_version *rver;
3758         const struct firmware *fw;
3759         u32 ver_rom, ver_patch, rver_rom;
3760         u16 rver_rom_low, rver_rom_high, rver_patch;
3761         char fwname[64];
3762         int err;
3763
3764         ver_rom = le32_to_cpu(ver->rom_version);
3765         ver_patch = le32_to_cpu(ver->patch_version);
3766
3767         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3768
3769         err = request_firmware(&fw, fwname, &hdev->dev);
3770         if (err) {
3771                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3772                            fwname, err);
3773                 return err;
3774         }
3775
3776         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3777
3778         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3779         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3780         rver_patch = le16_to_cpu(rver->patch_version);
3781
3782         if (ver_rom & ~0xffffU) {
3783                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3784                 rver_rom = rver_rom_high << 16 | rver_rom_low;
3785         } else {
3786                 rver_rom = rver_rom_low;
3787         }
3788
3789         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3790                     "firmware rome 0x%x build 0x%x",
3791                     rver_rom, rver_patch, ver_rom, ver_patch);
3792
3793         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3794                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3795                 err = -EINVAL;
3796                 goto done;
3797         }
3798
3799         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3800
3801 done:
3802         release_firmware(fw);
3803
3804         return err;
3805 }
3806
3807 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3808                                         const struct qca_version *ver)
3809 {
3810         u32 rom_version = le32_to_cpu(ver->rom_version);
3811         u16 flag = le16_to_cpu(ver->flag);
3812
3813         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3814                 /* The board_id should be split into two bytes
3815                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3816                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3817                  * we have several platforms, and platform IDs are continuously added
3818                  * Platform ID:
3819                  * 0x00 is for Mobile
3820                  * 0x01 is for X86
3821                  * 0x02 is for Automotive
3822                  * 0x03 is for Consumer electronic
3823                  */
3824                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3825                 const char *variant;
3826
3827                 switch (le32_to_cpu(ver->ram_version)) {
3828                 case WCN6855_2_0_RAM_VERSION_GF:
3829                 case WCN6855_2_1_RAM_VERSION_GF:
3830                         variant = "_gf";
3831                         break;
3832                 default:
3833                         variant = "";
3834                         break;
3835                 }
3836
3837                 if (board_id == 0) {
3838                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3839                                 rom_version, variant);
3840                 } else {
3841                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3842                                 rom_version, variant, board_id);
3843                 }
3844         } else {
3845                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3846                         rom_version);
3847         }
3848
3849 }
3850
3851 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3852                                     struct qca_version *ver,
3853                                     const struct qca_device_info *info)
3854 {
3855         const struct firmware *fw;
3856         char fwname[64];
3857         int err;
3858
3859         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3860
3861         err = request_firmware(&fw, fwname, &hdev->dev);
3862         if (err) {
3863                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3864                            fwname, err);
3865                 return err;
3866         }
3867
3868         bt_dev_info(hdev, "using NVM file: %s", fwname);
3869
3870         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3871
3872         release_firmware(fw);
3873
3874         return err;
3875 }
3876
3877 /* identify the ROM version and check whether patches are needed */
3878 static bool btusb_qca_need_patch(struct usb_device *udev)
3879 {
3880         struct qca_version ver;
3881
3882         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3883                                       sizeof(ver)) < 0)
3884                 return false;
3885         /* only low ROM versions need patches */
3886         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3887 }
3888
3889 static int btusb_setup_qca(struct hci_dev *hdev)
3890 {
3891         struct btusb_data *btdata = hci_get_drvdata(hdev);
3892         struct usb_device *udev = btdata->udev;
3893         const struct qca_device_info *info = NULL;
3894         struct qca_version ver;
3895         u32 ver_rom;
3896         u8 status;
3897         int i, err;
3898
3899         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3900                                         sizeof(ver));
3901         if (err < 0)
3902                 return err;
3903
3904         ver_rom = le32_to_cpu(ver.rom_version);
3905
3906         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3907                 if (ver_rom == qca_devices_table[i].rom_version)
3908                         info = &qca_devices_table[i];
3909         }
3910         if (!info) {
3911                 /* If the rom_version is not matched in the qca_devices_table
3912                  * and the high ROM version is not zero, we assume this chip no
3913                  * need to load the rampatch and nvm.
3914                  */
3915                 if (ver_rom & ~0xffffU)
3916                         return 0;
3917
3918                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3919                 return -ENODEV;
3920         }
3921
3922         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3923                                         sizeof(status));
3924         if (err < 0)
3925                 return err;
3926
3927         if (!(status & QCA_PATCH_UPDATED)) {
3928                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3929                 if (err < 0)
3930                         return err;
3931         }
3932
3933         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3934                                         sizeof(ver));
3935         if (err < 0)
3936                 return err;
3937
3938         btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version);
3939         btdata->qca_dump.controller_id = le32_to_cpu(ver.rom_version);
3940
3941         if (!(status & QCA_SYSCFG_UPDATED)) {
3942                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3943                 if (err < 0)
3944                         return err;
3945
3946                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3947                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3948                  * cause potential enable failure.
3949                  */
3950                 if (info->rom_version >= 0x00130201)
3951                         msleep(QCA_BT_RESET_WAIT_MS);
3952         }
3953
3954         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3955          * work with the likes of HSP/HFP mSBC.
3956          */
3957         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3958
3959         return 0;
3960 }
3961
3962 static inline int __set_diag_interface(struct hci_dev *hdev)
3963 {
3964         struct btusb_data *data = hci_get_drvdata(hdev);
3965         struct usb_interface *intf = data->diag;
3966         int i;
3967
3968         if (!data->diag)
3969                 return -ENODEV;
3970
3971         data->diag_tx_ep = NULL;
3972         data->diag_rx_ep = NULL;
3973
3974         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3975                 struct usb_endpoint_descriptor *ep_desc;
3976
3977                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3978
3979                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3980                         data->diag_tx_ep = ep_desc;
3981                         continue;
3982                 }
3983
3984                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3985                         data->diag_rx_ep = ep_desc;
3986                         continue;
3987                 }
3988         }
3989
3990         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3991                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3992                 return -ENODEV;
3993         }
3994
3995         return 0;
3996 }
3997
3998 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3999 {
4000         struct btusb_data *data = hci_get_drvdata(hdev);
4001         struct sk_buff *skb;
4002         struct urb *urb;
4003         unsigned int pipe;
4004
4005         if (!data->diag_tx_ep)
4006                 return ERR_PTR(-ENODEV);
4007
4008         urb = usb_alloc_urb(0, GFP_KERNEL);
4009         if (!urb)
4010                 return ERR_PTR(-ENOMEM);
4011
4012         skb = bt_skb_alloc(2, GFP_KERNEL);
4013         if (!skb) {
4014                 usb_free_urb(urb);
4015                 return ERR_PTR(-ENOMEM);
4016         }
4017
4018         skb_put_u8(skb, 0xf0);
4019         skb_put_u8(skb, enable);
4020
4021         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4022
4023         usb_fill_bulk_urb(urb, data->udev, pipe,
4024                           skb->data, skb->len, btusb_tx_complete, skb);
4025
4026         skb->dev = (void *)hdev;
4027
4028         return urb;
4029 }
4030
4031 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4032 {
4033         struct btusb_data *data = hci_get_drvdata(hdev);
4034         struct urb *urb;
4035
4036         if (!data->diag)
4037                 return -ENODEV;
4038
4039         if (!test_bit(HCI_RUNNING, &hdev->flags))
4040                 return -ENETDOWN;
4041
4042         urb = alloc_diag_urb(hdev, enable);
4043         if (IS_ERR(urb))
4044                 return PTR_ERR(urb);
4045
4046         return submit_or_queue_tx_urb(hdev, urb);
4047 }
4048
4049 #ifdef CONFIG_PM
4050 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4051 {
4052         struct btusb_data *data = priv;
4053
4054         pm_wakeup_event(&data->udev->dev, 0);
4055         pm_system_wakeup();
4056
4057         /* Disable only if not already disabled (keep it balanced) */
4058         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4059                 disable_irq_nosync(irq);
4060                 disable_irq_wake(irq);
4061         }
4062         return IRQ_HANDLED;
4063 }
4064
4065 static const struct of_device_id btusb_match_table[] = {
4066         { .compatible = "usb1286,204e" },
4067         { .compatible = "usbcf3,e300" }, /* QCA6174A */
4068         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4069         { }
4070 };
4071 MODULE_DEVICE_TABLE(of, btusb_match_table);
4072
4073 /* Use an oob wakeup pin? */
4074 static int btusb_config_oob_wake(struct hci_dev *hdev)
4075 {
4076         struct btusb_data *data = hci_get_drvdata(hdev);
4077         struct device *dev = &data->udev->dev;
4078         int irq, ret;
4079
4080         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4081
4082         if (!of_match_device(btusb_match_table, dev))
4083                 return 0;
4084
4085         /* Move on if no IRQ specified */
4086         irq = of_irq_get_byname(dev->of_node, "wakeup");
4087         if (irq <= 0) {
4088                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4089                 return 0;
4090         }
4091
4092         irq_set_status_flags(irq, IRQ_NOAUTOEN);
4093         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4094                                0, "OOB Wake-on-BT", data);
4095         if (ret) {
4096                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4097                 return ret;
4098         }
4099
4100         ret = device_init_wakeup(dev, true);
4101         if (ret) {
4102                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4103                 return ret;
4104         }
4105
4106         data->oob_wake_irq = irq;
4107         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4108         return 0;
4109 }
4110 #endif
4111
4112 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4113 {
4114         if (dmi_check_system(btusb_needs_reset_resume_table))
4115                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4116 }
4117
4118 static bool btusb_wakeup(struct hci_dev *hdev)
4119 {
4120         struct btusb_data *data = hci_get_drvdata(hdev);
4121
4122         return device_may_wakeup(&data->udev->dev);
4123 }
4124
4125 static int btusb_shutdown_qca(struct hci_dev *hdev)
4126 {
4127         struct sk_buff *skb;
4128
4129         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4130         if (IS_ERR(skb)) {
4131                 bt_dev_err(hdev, "HCI reset during shutdown failed");
4132                 return PTR_ERR(skb);
4133         }
4134         kfree_skb(skb);
4135
4136         return 0;
4137 }
4138
4139 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
4140                                     size_t count, loff_t *ppos)
4141 {
4142         struct btusb_data *data = file->private_data;
4143         char buf[3];
4144
4145         buf[0] = data->poll_sync ? 'Y' : 'N';
4146         buf[1] = '\n';
4147         buf[2] = '\0';
4148         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
4149 }
4150
4151 static ssize_t force_poll_sync_write(struct file *file,
4152                                      const char __user *user_buf,
4153                                      size_t count, loff_t *ppos)
4154 {
4155         struct btusb_data *data = file->private_data;
4156         bool enable;
4157         int err;
4158
4159         err = kstrtobool_from_user(user_buf, count, &enable);
4160         if (err)
4161                 return err;
4162
4163         /* Only allow changes while the adapter is down */
4164         if (test_bit(HCI_UP, &data->hdev->flags))
4165                 return -EPERM;
4166
4167         if (data->poll_sync == enable)
4168                 return -EALREADY;
4169
4170         data->poll_sync = enable;
4171
4172         return count;
4173 }
4174
4175 static const struct file_operations force_poll_sync_fops = {
4176         .open           = simple_open,
4177         .read           = force_poll_sync_read,
4178         .write          = force_poll_sync_write,
4179         .llseek         = default_llseek,
4180 };
4181
4182 static int btusb_probe(struct usb_interface *intf,
4183                        const struct usb_device_id *id)
4184 {
4185         struct usb_endpoint_descriptor *ep_desc;
4186         struct gpio_desc *reset_gpio;
4187         struct btusb_data *data;
4188         struct hci_dev *hdev;
4189         unsigned ifnum_base;
4190         int i, err, priv_size;
4191
4192         BT_DBG("intf %p id %p", intf, id);
4193
4194         if ((id->driver_info & BTUSB_IFNUM_2) &&
4195             (intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
4196             (intf->cur_altsetting->desc.bInterfaceNumber != 2))
4197                 return -ENODEV;
4198
4199         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4200
4201         if (!id->driver_info) {
4202                 const struct usb_device_id *match;
4203
4204                 match = usb_match_id(intf, quirks_table);
4205                 if (match)
4206                         id = match;
4207         }
4208
4209         if (id->driver_info == BTUSB_IGNORE)
4210                 return -ENODEV;
4211
4212         if (id->driver_info & BTUSB_ATH3012) {
4213                 struct usb_device *udev = interface_to_usbdev(intf);
4214
4215                 /* Old firmware would otherwise let ath3k driver load
4216                  * patch and sysconfig files
4217                  */
4218                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4219                     !btusb_qca_need_patch(udev))
4220                         return -ENODEV;
4221         }
4222
4223         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4224         if (!data)
4225                 return -ENOMEM;
4226
4227         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4228                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4229
4230                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4231                         data->intr_ep = ep_desc;
4232                         continue;
4233                 }
4234
4235                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4236                         data->bulk_tx_ep = ep_desc;
4237                         continue;
4238                 }
4239
4240                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4241                         data->bulk_rx_ep = ep_desc;
4242                         continue;
4243                 }
4244         }
4245
4246         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4247                 return -ENODEV;
4248
4249         if (id->driver_info & BTUSB_AMP) {
4250                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4251                 data->cmdreq = 0x2b;
4252         } else {
4253                 data->cmdreq_type = USB_TYPE_CLASS;
4254                 data->cmdreq = 0x00;
4255         }
4256
4257         data->udev = interface_to_usbdev(intf);
4258         data->intf = intf;
4259
4260         INIT_WORK(&data->work, btusb_work);
4261         INIT_WORK(&data->waker, btusb_waker);
4262         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
4263
4264         skb_queue_head_init(&data->acl_q);
4265
4266         init_usb_anchor(&data->deferred);
4267         init_usb_anchor(&data->tx_anchor);
4268         spin_lock_init(&data->txlock);
4269
4270         init_usb_anchor(&data->intr_anchor);
4271         init_usb_anchor(&data->bulk_anchor);
4272         init_usb_anchor(&data->isoc_anchor);
4273         init_usb_anchor(&data->diag_anchor);
4274         init_usb_anchor(&data->ctrl_anchor);
4275         spin_lock_init(&data->rxlock);
4276
4277         priv_size = 0;
4278
4279         data->recv_event = hci_recv_frame;
4280         data->recv_bulk = btusb_recv_bulk;
4281
4282         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4283                 /* Allocate extra space for Intel device */
4284                 priv_size += sizeof(struct btintel_data);
4285
4286                 /* Override the rx handlers */
4287                 data->recv_event = btintel_recv_event;
4288                 data->recv_bulk = btusb_recv_bulk_intel;
4289         } else if (id->driver_info & BTUSB_REALTEK) {
4290                 /* Allocate extra space for Realtek device */
4291                 priv_size += sizeof(struct btrealtek_data);
4292
4293                 data->recv_event = btusb_recv_event_realtek;
4294         } else if (id->driver_info & BTUSB_MEDIATEK) {
4295                 /* Allocate extra space for Mediatek device */
4296                 priv_size += sizeof(struct btmediatek_data);
4297         }
4298
4299         data->recv_acl = hci_recv_frame;
4300
4301         hdev = hci_alloc_dev_priv(priv_size);
4302         if (!hdev)
4303                 return -ENOMEM;
4304
4305         hdev->bus = HCI_USB;
4306         hci_set_drvdata(hdev, data);
4307
4308         if (id->driver_info & BTUSB_AMP)
4309                 hdev->dev_type = HCI_AMP;
4310         else
4311                 hdev->dev_type = HCI_PRIMARY;
4312
4313         data->hdev = hdev;
4314
4315         SET_HCIDEV_DEV(hdev, &intf->dev);
4316
4317         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4318                                         GPIOD_OUT_LOW);
4319         if (IS_ERR(reset_gpio)) {
4320                 err = PTR_ERR(reset_gpio);
4321                 goto out_free_dev;
4322         } else if (reset_gpio) {
4323                 data->reset_gpio = reset_gpio;
4324         }
4325
4326         hdev->open   = btusb_open;
4327         hdev->close  = btusb_close;
4328         hdev->flush  = btusb_flush;
4329         hdev->send   = btusb_send_frame;
4330         hdev->notify = btusb_notify;
4331         hdev->wakeup = btusb_wakeup;
4332
4333 #ifdef CONFIG_PM
4334         err = btusb_config_oob_wake(hdev);
4335         if (err)
4336                 goto out_free_dev;
4337
4338         /* Marvell devices may need a specific chip configuration */
4339         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4340                 err = marvell_config_oob_wake(hdev);
4341                 if (err)
4342                         goto out_free_dev;
4343         }
4344 #endif
4345         if (id->driver_info & BTUSB_CW6622)
4346                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4347
4348         if (id->driver_info & BTUSB_BCM2045)
4349                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4350
4351         if (id->driver_info & BTUSB_BCM92035)
4352                 hdev->setup = btusb_setup_bcm92035;
4353
4354         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4355             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4356                 hdev->manufacturer = 15;
4357                 hdev->setup = btbcm_setup_patchram;
4358                 hdev->set_diag = btusb_bcm_set_diag;
4359                 hdev->set_bdaddr = btbcm_set_bdaddr;
4360
4361                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4362                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4363         }
4364
4365         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4366             (id->driver_info & BTUSB_BCM_APPLE)) {
4367                 hdev->manufacturer = 15;
4368                 hdev->setup = btbcm_setup_apple;
4369                 hdev->set_diag = btusb_bcm_set_diag;
4370
4371                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4372                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4373         }
4374
4375         /* Combined Intel Device setup to support multiple setup routine */
4376         if (id->driver_info & BTUSB_INTEL_COMBINED) {
4377                 err = btintel_configure_setup(hdev, btusb_driver.name);
4378                 if (err)
4379                         goto out_free_dev;
4380
4381                 /* Transport specific configuration */
4382                 hdev->send = btusb_send_frame_intel;
4383                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4384
4385                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4386                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4387
4388                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4389                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4390
4391                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4392                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4393         }
4394
4395         if (id->driver_info & BTUSB_MARVELL)
4396                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4397
4398         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4399             (id->driver_info & BTUSB_MEDIATEK)) {
4400                 hdev->setup = btusb_mtk_setup;
4401                 hdev->shutdown = btusb_mtk_shutdown;
4402                 hdev->manufacturer = 70;
4403                 hdev->cmd_timeout = btmtk_reset_sync;
4404                 hdev->set_bdaddr = btmtk_set_bdaddr;
4405                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
4406                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4407                 data->recv_acl = btusb_recv_acl_mtk;
4408         }
4409
4410         if (id->driver_info & BTUSB_SWAVE) {
4411                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4412                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4413         }
4414
4415         if (id->driver_info & BTUSB_INTEL_BOOT) {
4416                 hdev->manufacturer = 2;
4417                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4418         }
4419
4420         if (id->driver_info & BTUSB_ATH3012) {
4421                 data->setup_on_usb = btusb_setup_qca;
4422                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4423                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4424                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4425         }
4426
4427         if (id->driver_info & BTUSB_QCA_ROME) {
4428                 data->setup_on_usb = btusb_setup_qca;
4429                 hdev->shutdown = btusb_shutdown_qca;
4430                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4431                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4432                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4433                 btusb_check_needs_reset_resume(intf);
4434         }
4435
4436         if (id->driver_info & BTUSB_QCA_WCN6855) {
4437                 data->qca_dump.id_vendor = id->idVendor;
4438                 data->qca_dump.id_product = id->idProduct;
4439                 data->recv_event = btusb_recv_evt_qca;
4440                 data->recv_acl = btusb_recv_acl_qca;
4441                 hci_devcd_register(hdev, btusb_coredump_qca, btusb_dump_hdr_qca, NULL);
4442                 data->setup_on_usb = btusb_setup_qca;
4443                 hdev->shutdown = btusb_shutdown_qca;
4444                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4445                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4446                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4447                 hci_set_msft_opcode(hdev, 0xFD70);
4448         }
4449
4450         if (id->driver_info & BTUSB_AMP) {
4451                 /* AMP controllers do not support SCO packets */
4452                 data->isoc = NULL;
4453         } else {
4454                 /* Interface orders are hardcoded in the specification */
4455                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4456                 data->isoc_ifnum = ifnum_base + 1;
4457         }
4458
4459         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4460             (id->driver_info & BTUSB_REALTEK)) {
4461                 btrtl_set_driver_name(hdev, btusb_driver.name);
4462                 hdev->setup = btusb_setup_realtek;
4463                 hdev->shutdown = btrtl_shutdown_realtek;
4464                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4465                 hdev->hw_error = btusb_rtl_hw_error;
4466
4467                 /* Realtek devices need to set remote wakeup on auto-suspend */
4468                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4469                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4470         }
4471
4472         if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4473                 /* Support is advertised, but not implemented */
4474                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
4475                 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
4476                 set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
4477                 set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
4478         }
4479
4480         if (!reset)
4481                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4482
4483         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4484                 if (!disable_scofix)
4485                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4486         }
4487
4488         if (id->driver_info & BTUSB_BROKEN_ISOC)
4489                 data->isoc = NULL;
4490
4491         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4492                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4493
4494         if (id->driver_info & BTUSB_VALID_LE_STATES)
4495                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4496
4497         if (id->driver_info & BTUSB_DIGIANSWER) {
4498                 data->cmdreq_type = USB_TYPE_VENDOR;
4499                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4500         }
4501
4502         if (id->driver_info & BTUSB_CSR) {
4503                 struct usb_device *udev = data->udev;
4504                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4505
4506                 /* Old firmware would otherwise execute USB reset */
4507                 if (bcdDevice < 0x117)
4508                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4509
4510                 /* This must be set first in case we disable it for fakes */
4511                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4512
4513                 /* Fake CSR devices with broken commands */
4514                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4515                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4516                         hdev->setup = btusb_setup_csr;
4517         }
4518
4519         if (id->driver_info & BTUSB_SNIFFER) {
4520                 struct usb_device *udev = data->udev;
4521
4522                 /* New sniffer firmware has crippled HCI interface */
4523                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4524                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4525         }
4526
4527         if (id->driver_info & BTUSB_INTEL_BOOT) {
4528                 /* A bug in the bootloader causes that interrupt interface is
4529                  * only enabled after receiving SetInterface(0, AltSetting=0).
4530                  */
4531                 err = usb_set_interface(data->udev, 0, 0);
4532                 if (err < 0) {
4533                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4534                         goto out_free_dev;
4535                 }
4536         }
4537
4538         if (data->isoc) {
4539                 err = usb_driver_claim_interface(&btusb_driver,
4540                                                  data->isoc, data);
4541                 if (err < 0)
4542                         goto out_free_dev;
4543         }
4544
4545         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4546                 if (!usb_driver_claim_interface(&btusb_driver,
4547                                                 data->diag, data))
4548                         __set_diag_interface(hdev);
4549                 else
4550                         data->diag = NULL;
4551         }
4552
4553         if (enable_autosuspend)
4554                 usb_enable_autosuspend(data->udev);
4555
4556         data->poll_sync = enable_poll_sync;
4557
4558         err = hci_register_dev(hdev);
4559         if (err < 0)
4560                 goto out_free_dev;
4561
4562         usb_set_intfdata(intf, data);
4563
4564         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4565                             &force_poll_sync_fops);
4566
4567         return 0;
4568
4569 out_free_dev:
4570         if (data->reset_gpio)
4571                 gpiod_put(data->reset_gpio);
4572         hci_free_dev(hdev);
4573         return err;
4574 }
4575
4576 static void btusb_disconnect(struct usb_interface *intf)
4577 {
4578         struct btusb_data *data = usb_get_intfdata(intf);
4579         struct hci_dev *hdev;
4580
4581         BT_DBG("intf %p", intf);
4582
4583         if (!data)
4584                 return;
4585
4586         hdev = data->hdev;
4587         usb_set_intfdata(data->intf, NULL);
4588
4589         if (data->isoc)
4590                 usb_set_intfdata(data->isoc, NULL);
4591
4592         if (data->diag)
4593                 usb_set_intfdata(data->diag, NULL);
4594
4595         hci_unregister_dev(hdev);
4596
4597         if (intf == data->intf) {
4598                 if (data->isoc)
4599                         usb_driver_release_interface(&btusb_driver, data->isoc);
4600                 if (data->diag)
4601                         usb_driver_release_interface(&btusb_driver, data->diag);
4602         } else if (intf == data->isoc) {
4603                 if (data->diag)
4604                         usb_driver_release_interface(&btusb_driver, data->diag);
4605                 usb_driver_release_interface(&btusb_driver, data->intf);
4606         } else if (intf == data->diag) {
4607                 usb_driver_release_interface(&btusb_driver, data->intf);
4608                 if (data->isoc)
4609                         usb_driver_release_interface(&btusb_driver, data->isoc);
4610         }
4611
4612         if (data->oob_wake_irq)
4613                 device_init_wakeup(&data->udev->dev, false);
4614
4615         if (data->reset_gpio)
4616                 gpiod_put(data->reset_gpio);
4617
4618         hci_free_dev(hdev);
4619 }
4620
4621 #ifdef CONFIG_PM
4622 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4623 {
4624         struct btusb_data *data = usb_get_intfdata(intf);
4625
4626         BT_DBG("intf %p", intf);
4627
4628         if (data->suspend_count++)
4629                 return 0;
4630
4631         spin_lock_irq(&data->txlock);
4632         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4633                 set_bit(BTUSB_SUSPENDING, &data->flags);
4634                 spin_unlock_irq(&data->txlock);
4635         } else {
4636                 spin_unlock_irq(&data->txlock);
4637                 data->suspend_count--;
4638                 return -EBUSY;
4639         }
4640
4641         cancel_work_sync(&data->work);
4642
4643         btusb_stop_traffic(data);
4644         usb_kill_anchored_urbs(&data->tx_anchor);
4645
4646         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4647                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4648                 enable_irq_wake(data->oob_wake_irq);
4649                 enable_irq(data->oob_wake_irq);
4650         }
4651
4652         /* For global suspend, Realtek devices lose the loaded fw
4653          * in them. But for autosuspend, firmware should remain.
4654          * Actually, it depends on whether the usb host sends
4655          * set feature (enable wakeup) or not.
4656          */
4657         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4658                 if (PMSG_IS_AUTO(message) &&
4659                     device_can_wakeup(&data->udev->dev))
4660                         data->udev->do_remote_wakeup = 1;
4661                 else if (!PMSG_IS_AUTO(message) &&
4662                          !device_may_wakeup(&data->udev->dev)) {
4663                         data->udev->do_remote_wakeup = 0;
4664                         data->udev->reset_resume = 1;
4665                 }
4666         }
4667
4668         return 0;
4669 }
4670
4671 static void play_deferred(struct btusb_data *data)
4672 {
4673         struct urb *urb;
4674         int err;
4675
4676         while ((urb = usb_get_from_anchor(&data->deferred))) {
4677                 usb_anchor_urb(urb, &data->tx_anchor);
4678
4679                 err = usb_submit_urb(urb, GFP_ATOMIC);
4680                 if (err < 0) {
4681                         if (err != -EPERM && err != -ENODEV)
4682                                 BT_ERR("%s urb %p submission failed (%d)",
4683                                        data->hdev->name, urb, -err);
4684                         kfree(urb->setup_packet);
4685                         usb_unanchor_urb(urb);
4686                         usb_free_urb(urb);
4687                         break;
4688                 }
4689
4690                 data->tx_in_flight++;
4691                 usb_free_urb(urb);
4692         }
4693
4694         /* Cleanup the rest deferred urbs. */
4695         while ((urb = usb_get_from_anchor(&data->deferred))) {
4696                 kfree(urb->setup_packet);
4697                 usb_free_urb(urb);
4698         }
4699 }
4700
4701 static int btusb_resume(struct usb_interface *intf)
4702 {
4703         struct btusb_data *data = usb_get_intfdata(intf);
4704         struct hci_dev *hdev = data->hdev;
4705         int err = 0;
4706
4707         BT_DBG("intf %p", intf);
4708
4709         if (--data->suspend_count)
4710                 return 0;
4711
4712         /* Disable only if not already disabled (keep it balanced) */
4713         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4714                 disable_irq(data->oob_wake_irq);
4715                 disable_irq_wake(data->oob_wake_irq);
4716         }
4717
4718         if (!test_bit(HCI_RUNNING, &hdev->flags))
4719                 goto done;
4720
4721         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4722                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4723                 if (err < 0) {
4724                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4725                         goto failed;
4726                 }
4727         }
4728
4729         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4730                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4731                 if (err < 0) {
4732                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4733                         goto failed;
4734                 }
4735
4736                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4737         }
4738
4739         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4740                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4741                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4742                 else
4743                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4744         }
4745
4746         spin_lock_irq(&data->txlock);
4747         play_deferred(data);
4748         clear_bit(BTUSB_SUSPENDING, &data->flags);
4749         spin_unlock_irq(&data->txlock);
4750         schedule_work(&data->work);
4751
4752         return 0;
4753
4754 failed:
4755         usb_scuttle_anchored_urbs(&data->deferred);
4756 done:
4757         spin_lock_irq(&data->txlock);
4758         clear_bit(BTUSB_SUSPENDING, &data->flags);
4759         spin_unlock_irq(&data->txlock);
4760
4761         return err;
4762 }
4763 #endif
4764
4765 #ifdef CONFIG_DEV_COREDUMP
4766 static void btusb_coredump(struct device *dev)
4767 {
4768         struct btusb_data *data = dev_get_drvdata(dev);
4769         struct hci_dev *hdev = data->hdev;
4770
4771         if (hdev->dump.coredump)
4772                 hdev->dump.coredump(hdev);
4773 }
4774 #endif
4775
4776 static struct usb_driver btusb_driver = {
4777         .name           = "btusb",
4778         .probe          = btusb_probe,
4779         .disconnect     = btusb_disconnect,
4780 #ifdef CONFIG_PM
4781         .suspend        = btusb_suspend,
4782         .resume         = btusb_resume,
4783 #endif
4784         .id_table       = btusb_table,
4785         .supports_autosuspend = 1,
4786         .disable_hub_initiated_lpm = 1,
4787
4788 #ifdef CONFIG_DEV_COREDUMP
4789         .drvwrap = {
4790                 .driver = {
4791                         .coredump = btusb_coredump,
4792                 },
4793         },
4794 #endif
4795 };
4796
4797 module_usb_driver(btusb_driver);
4798
4799 module_param(disable_scofix, bool, 0644);
4800 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4801
4802 module_param(force_scofix, bool, 0644);
4803 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4804
4805 module_param(enable_autosuspend, bool, 0644);
4806 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4807
4808 module_param(reset, bool, 0644);
4809 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4810
4811 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4812 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4813 MODULE_VERSION(VERSION);
4814 MODULE_LICENSE("GPL");