add support for Bluetooth on MT7622 SoC

cover

	https://www.spinics.net/lists/linux-bluetooth/msg74918.html
 .../devicetree/bindings/net/mediatek-bluetooth.txt |  35 ++
 MAINTAINERS                                        |   8 +
 drivers/bluetooth/Kconfig                          |  23 +
 drivers/bluetooth/Makefile                         |   3 +
 drivers/bluetooth/btmtkuart.c                      | 383 +++++++++++++++
 drivers/bluetooth/btmtkuart.h                      | 119 +++++
 drivers/bluetooth/btuart.c                         | 527 +++++++++++++++++++++
 drivers/bluetooth/btuart.h                         |  30 ++
 drivers/tty/serdev/core.c                          |  14 +-
 include/net/bluetooth/hci.h                        |   9 +
 net/bluetooth/hci_core.c                           |   3 +-
 11 files changed, 1152 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
 create mode 100644 drivers/bluetooth/btmtkuart.c
 create mode 100644 drivers/bluetooth/btmtkuart.h
 create mode 100644 drivers/bluetooth/btuart.c
 create mode 100644 drivers/bluetooth/btuart.h
2.7.4
---
 .../devicetree/bindings/net/mediatek-bluetooth.txt | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
new file mode 100644
index 0000000..1335429
@@ -0,0 +1,35 @@
+MediaTek SoC built-in Bluetooth Devices
+==================================
+
+This device is a serial attached device to BTIF device and thus it must be a
+child node of the serial node with BTIF. The dt-bindings details for BTIF
+device can be known via Documentation/devicetree/bindings/serial/8250.txt.
+
+Required properties:
+
+- compatible:	Must be one of
+		  "mediatek,mt7622-bluetooth"": for MT7622 SoC
+- clocks:	Should be the clock specifiers corresponding to the entry in
+		clock-names property.
+- clock-names:	Should contain "ref" entries.
+- power-domains: Phandle to the power domain that the device is part of
+
+Example:
+
+	btif: serial at 1100c000 {
+		compatible = "mediatek,mt7622-btif",
+			     "mediatek,mtk-btif";
+		reg = <0 0x1100c000 0 0x1000>;
+		interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&pericfg CLK_PERI_BTIF_PD>;
+		clock-names = "main";
+		reg-shift = <2>;
+		reg-io-width = <4>;
+
+		bluetooth {
+			compatible = "mediatek,mt7622-bluetooth";
+			power-domains = <&scpsys MT7622_POWER_DOMAIN_WB>;
+			clocks = <&clk25m>;
+			clock-names = "ref";
+		};
+	};

2.7.4
---
 drivers/tty/serdev/core.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)
index df93b72..c93d8ee 100644
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/pm_domain.h>
 #include <linux/serdev.h>
 #include <linux/slab.h>
 

@@ -330,8 +331,16 @@ EXPORT_SYMBOL_GPL(serdev_device_set_tiocm);
 static int serdev_drv_probe(struct device *dev)
 {
 	const struct serdev_device_driver *sdrv = to_serdev_device_driver(dev->driver);
+	int ret;
+
+	ret = dev_pm_domain_attach(dev, true);
+	if (ret != -EPROBE_DEFER) {
+		ret = sdrv->probe(to_serdev_device(dev));
+		if (ret)
+			dev_pm_domain_detach(dev, true);
+	}
 
-	return sdrv->probe(to_serdev_device(dev));
+	return ret;
 }
 
 static int serdev_drv_remove(struct device *dev)

@@ -339,6 +348,9 @@ static int serdev_drv_remove(struct device *dev)
 	const struct serdev_device_driver *sdrv = to_serdev_device_driver(dev->driver);
 	if (sdrv->remove)
 		sdrv->remove(to_serdev_device(dev));
+
+	dev_pm_domain_detach(dev, true);
+
 	return 0;
 }
 

2.7.4
---
 drivers/bluetooth/Kconfig  |  11 +
 drivers/bluetooth/Makefile |   1 +
 drivers/bluetooth/btuart.c | 506 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 518 insertions(+)
 create mode 100644 drivers/bluetooth/btuart.c
index 010f5f5..6d69ac2 100644
@@ -74,6 +74,17 @@ config BT_HCIBTSDIO
 	  Say Y here to compile support for Bluetooth SDIO devices into the
 	  kernel or say M to compile it as module (btsdio).
 
+config BT_HCIBTUART
+	tristate "HCI UART driver"
+	depends on SERIAL_DEV_BUS
+	help
+	  Bluetooth HCI UART driver.
+	  This driver is required if you want to use Bluetooth device with
+	  UART interface.
+
+	  Say Y here to compile support for Bluetooth UART devices into the
+	  kernel or say M to compile it as module (btuart).
+
 config BT_HCIUART
 	tristate "HCI UART driver"
 	depends on SERIAL_DEV_BUS || !SERIAL_DEV_BUS

index ec16c55..60a19cb 100644
@@ -14,6 +14,7 @@ obj-$(CONFIG_BT_HCIBLUECARD)	+= bluecard_cs.o
 
 obj-$(CONFIG_BT_HCIBTUSB)	+= btusb.o
 obj-$(CONFIG_BT_HCIBTSDIO)	+= btsdio.o
+obj-$(CONFIG_BT_HCIBTUART)	+= btuart.o
 
 obj-$(CONFIG_BT_INTEL)		+= btintel.o
 obj-$(CONFIG_BT_ATH3K)		+= ath3k.o

2.7.4
---
 include/net/bluetooth/hci.h | 9 +++++++++
 net/bluetooth/hci_core.c    | 3 ++-
 2 files changed, 11 insertions(+), 1 deletion(-)
index 1668211..b37d973 100644
@@ -183,6 +183,15 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_NON_PERSISTENT_DIAG,
+
+	/* When this quirk is set, setup() would be run after every
+	 * open() and not just after the first open().
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
+	 *
+	 */
+	HCI_QUIRK_NON_PERSISTENT_SETUP,
 };
 
 /* HCI device flags */

index 40d260f..7de712e2 100644
@@ -1377,7 +1377,8 @@ static int hci_dev_do_open(struct hci_dev *hdev)
 	atomic_set(&hdev->cmd_cnt, 1);
 	set_bit(HCI_INIT, &hdev->flags);
 
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
 		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
 
 		if (hdev->setup)

2.7.4
2 files changed, 11 insertions(+), 1 deletion(-)
index 1668211..b37d973 100644
@@ -183,6 +183,15 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_NON_PERSISTENT_DIAG,
+
+	/* When this quirk is set, setup() would be run after every
+	 * open() and not just after the first open().
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
+	 *
+	 */
+	HCI_QUIRK_NON_PERSISTENT_SETUP,
 };
 
 /* HCI device flags */

index 40d260f..7de712e2 100644

@@ -1377,7 +1377,8 @@ static int hci_dev_do_open(struct hci_dev *hdev)
 	atomic_set(&hdev->cmd_cnt, 1);
 	set_bit(HCI_INIT, &hdev->flags);
 
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
 		hci_sock_dev_event(hdev, HCI_DEV_SETUP);

-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {

		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {

		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {

		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {

		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
        01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
        75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
        02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
        6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
        01 00 00 00 05 00 01                             .......         
= Open Index: 00:00:46:76:22:01                                 [hci0] 6.717019
= Index Info: 00:00:46:76:22:01 (MediaTek, Inc.)                [hci0] 6.717030
> HCI Event: Unknown (0xe4) plen 5                              [hci0] 6.741093
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
        02 01 01 00 00                                   .....           
< HCI Command: Vendor (0x3f|0x006f) plen 5                      [hci0] 6.816413
        01 07 01 00 04                                   .....           
        02 07 01 00 00                                   .....           
< HCI Command: Vendor (0x3f|0x006f) plen 6                      [hci0] 8.845071
        01 06 02 00 00 01                                ......          
        02 06 01 00 00                                   .....           
      Reset (0x03|0x0003) ncmd 1
        Status: Success (0x00)
        29 19 09 17 20 48 07 11 00                       )... H...       
      Read Local Version Information (0x04|0x0001) ncmd 1
        Status: Success (0x00)
        HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
        LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
        Manufacturer: MediaTek, Inc. (70)
      Read BD ADDR (0x04|0x0009) ncmd 1
        Status: Success (0x00)
        Address: 00:00:46:76:22:01 (OLIVETTI NORTH AMERICA)
      Read Class of Device (0x03|0x0023) ncmd 1
        Status: Success (0x00)
        Class: 0x001f00
          Major class: Uncategorized, specific device code not specified
          Minor class: 0x00
      Read Local Name (0x03|0x0014) ncmd 1
        Status: Success (0x00)
        Name: MTK MT7622 #1
      Read Number of Supported IAC (0x03|0x0038) ncmd 1
        Status: Success (0x00)
        Number of IAC: 4
      Read Current IAC LAP (0x03|0x0039) ncmd 1
        Status: Success (0x00)
        Number of IAC: 1
        Access code: 0x9e8b33 (General Inquiry)
< HCI Command: Set Event Filter (0x03|0x0005) plen 1           [hci0] 10.867890
        Type: Clear All Filters (0x00)
      Set Event Filter (0x03|0x0005) ncmd 1
        Status: Success (0x00)
< HCI Command: Write Connection Accept.. (0x03|0x0016) plen 2  [hci0] 10.868054
        Timeout: 20000.000 msec (0x7d00)
      Write Connection Accept Timeout (0x03|0x0016) ncmd 1
        Status: Success (0x00)
        Mode: Enabled (0x01)
      Write Simple Pairing Mode (0x03|0x0056) ncmd 1
        Status: Success (0x00)
< HCI Command: Write Inquiry Mode (0x03|0x0045) plen 1         [hci0] 10.869239
        Mode: Inquiry Result with RSSI or Extended Inquiry Result (0x02)
      Write Inquiry Mode (0x03|0x0045) ncmd 1
        Status: Success (0x00)
      Read Inquiry Response TX Power Level (0x03|0x0058) ncmd 1
        Status: Success (0x00)
        TX power: -1 dBm
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.869572
        Page: 1
      Read Local Extended Features (0x04|0x0004) ncmd 1
        Status: Success (0x00)
        Page: 1/2
        Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
          Secure Simple Pairing (Host Support)
      Set Event Mask (0x03|0x0001) ncmd 1
        Status: Success (0x00)
< HCI Command: Read Stored Link Key (0x03|0x000d) plen 7       [hci0] 10.869947
        Address: 00:00:00:00:00:00 (OUI 00-00-00)
        Read all: 0x01
      Write Default Link Policy Settings (0x02|0x000f) ncmd 1
        Status: Success (0x00)
      Read Page Scan Activity (0x03|0x001b) ncmd 1
        Status: Success (0x00)
        Interval: 1280.000 msec (0x0800)
        Window: 11.250 msec (0x0012)
      Read Page Scan Type (0x03|0x0046) ncmd 1
        Status: Success (0x00)
        Type: Standard Scan (0x00)
      LE Set Event Mask (0x08|0x0001) ncmd 1
        Status: Success (0x00)
< HCI Command: Write LE Host Supported (0x03|0x006d) plen 2    [hci0] 10.870859
        Supported: 0x01
        Simultaneous: 0x00
      Write LE Host Supported (0x03|0x006d) ncmd 1
        Status: Success (0x00)
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.871059
        Page: 2
      Read Local Extended Features (0x04|0x0004) ncmd 1
        Status: Success (0x00)
        Page: 2/2
        Features: 0x25 0x0b 0x00 0x00 0x00 0x00 0x00 0x00
          Connectionless Slave Broadcast - Master
          Synchronization Train
          Generalized interlaced scan
          Secure Connections (Controller Support)
          Ping
          Train nudging
< HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7     [hci0] 10.871240
        Address: 00:00:00:00:00:00 (OUI 00-00-00)
        Delete all: 0x01
      Delete Stored Link Key (0x03|0x0012) ncmd 1
        Status: Success (0x00)
        Num keys: 0
      Set Event Mask Page 2 (0x03|0x0063) ncmd 1
        Status: Success (0x00)
      Read Local Supported Codecs (0x04|0x000b) ncmd 1
        Status: Success (0x00)
        Number of supported codecs: 2
          Codec: CVSD (0x02)
          Codec: Transparent (0x03)
        Number of vendor codecs: 0
      Read Synchronization Train Parameters (0x03|0x0077) ncmd 1
        Status: Success (0x00)
        Interval: 0.000 msec (0x0000)
        Timeout: 0.000 msec (0x00000000)
        Service data: 0x00
< HCI Command: Write Secure Connection.. (0x03|0x007a) plen 1  [hci0] 10.871947
        Support: Enabled (0x01)
      Write Secure Connections Host Support (0x03|0x007a) ncmd 1
        Status: Success (0x00)
      Unknown (0x08|0x0031) ncmd 1
        Status: Success (0x00)
      LE Set Scan Response Data (0x08|0x0009) ncmd 1
        Status: Success (0x00)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 10.872627
        Scan enable: Page Scan (0x02)
      Write Scan Enable (0x03|0x001a) ncmd 1
        Status: Success (0x00)
< HCI Command: Write Class of Device (0x03|0x0024) plen 3      [hci0] 10.872841
        Class: 0x000000
          Major class: Miscellaneous
          Minor class: 0x00
      Write Class of Device (0x03|0x0024) ncmd 1
        Status: Success (0x00)
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
        02 00 00 00 07 00 00 00 00                       .........       
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
        01 00 00 00 07 00 00 00 00                       .........       
      Write Local Name (0x03|0x0013) ncmd 1
        Status: Success (0x00)
< HCI Command: Write Extended Inquir.. (0x03|0x0052) plen 241  [hci0] 10.873470
        FEC: Not required (0x00)
        Name (complete): builder
        TX power: -1 dBm
        Device ID: USB Implementer's Forum assigned (0x0002)
          Vendor: Linux Foundation (0x1d6b)
          Product: 0x0246
          Version: 5.2.11 (0x052b)
        16-bit Service UUIDs (complete): 4 entries
          Generic Access Profile (0x1800)
          Generic Attribute Profile (0x1801)
          A/V Remote Control (0x110e)
          A/V Remote Control Target (0x110c)
      Write Extended Inquiry Response (0x03|0x0052) ncmd 1
        Status: Success (0x00)
* Unknown packet (code 17 len 13)                              [hci0] 10.873903
        01 00 00 00 01 00 05 00 00 d1 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 10.873913
        02 00 00 00 06 00 d1 0a 00 00                    ..........      
* Unknown packet (code 16 len 7)                               [hci0] 17.803939
        01 00 00 00 05 00 00                             .......         
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 17.803983
        Scan enable: No Scans (0x00)
      Write Scan Enable (0x03|0x001a) ncmd 1
        Status: Success (0x00)
< HCI Command: Vendor (0x3f|0x006f) plen 6                     [hci0] 17.804282
        01 06 02 00 00 00                                ......          
        02 06 01 00 00                                   .....           
* Unknown packet (code 17 len 13)                              [hci0] 17.811580
        01 00 00 00 01 00 05 00 00 d0 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 17.811596
        02 00 00 00 06 00 d0 0a 00 00                    ..........      
-	if (hci_dev_test_flag(hdev, HCI_SETUP)) {
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {

		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
       01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
       75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
       02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
       6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
       01 00 00 00 05 00 01                             .......         
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
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       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       01 07 01 00 04                                   .....           
       02 07 01 00 00                                   .....           
< HCI Command: Vendor (0x3f|0x006f) plen 6                      [hci0] 8.845071
       01 06 02 00 00 01                                ......          
       02 06 01 00 00                                   .....           
     Reset (0x03|0x0003) ncmd 1
       Status: Success (0x00)
       29 19 09 17 20 48 07 11 00                       )... H?       
     Read Local Version Information (0x04|0x0001) ncmd 1
       Status: Success (0x00)
       HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
       LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
       Manufacturer: MediaTek, Inc. (70)
     Read BD ADDR (0x04|0x0009) ncmd 1
       Status: Success (0x00)
       Address: 00:00:46:76:22:01 (OLIVETTI NORTH AMERICA)
     Read Class of Device (0x03|0x0023) ncmd 1
       Status: Success (0x00)
       Class: 0x001f00
         Major class: Uncategorized, specific device code not specified
         Minor class: 0x00
     Read Local Name (0x03|0x0014) ncmd 1
       Status: Success (0x00)
       Name: MTK MT7622 #1
     Read Number of Supported IAC (0x03|0x0038) ncmd 1
       Status: Success (0x00)
       Number of IAC: 4
     Read Current IAC LAP (0x03|0x0039) ncmd 1
       Status: Success (0x00)
       Number of IAC: 1
       Access code: 0x9e8b33 (General Inquiry)
< HCI Command: Set Event Filter (0x03|0x0005) plen 1           [hci0] 10.867890
       Type: Clear All Filters (0x00)
     Set Event Filter (0x03|0x0005) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Connection Accept.. (0x03|0x0016) plen 2  [hci0] 10.868054
       Timeout: 20000.000 msec (0x7d00)
     Write Connection Accept Timeout (0x03|0x0016) ncmd 1
       Status: Success (0x00)
       Mode: Enabled (0x01)
     Write Simple Pairing Mode (0x03|0x0056) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Inquiry Mode (0x03|0x0045) plen 1         [hci0] 10.869239
       Mode: Inquiry Result with RSSI or Extended Inquiry Result (0x02)
     Write Inquiry Mode (0x03|0x0045) ncmd 1
       Status: Success (0x00)
     Read Inquiry Response TX Power Level (0x03|0x0058) ncmd 1
       Status: Success (0x00)
       TX power: -1 dBm
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.869572
       Page: 1
     Read Local Extended Features (0x04|0x0004) ncmd 1
       Status: Success (0x00)
       Page: 1/2
       Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
         Secure Simple Pairing (Host Support)
     Set Event Mask (0x03|0x0001) ncmd 1
       Status: Success (0x00)
< HCI Command: Read Stored Link Key (0x03|0x000d) plen 7       [hci0] 10.869947
       Address: 00:00:00:00:00:00 (OUI 00-00-00)
       Read all: 0x01
     Write Default Link Policy Settings (0x02|0x000f) ncmd 1
       Status: Success (0x00)
     Read Page Scan Activity (0x03|0x001b) ncmd 1
       Status: Success (0x00)
       Interval: 1280.000 msec (0x0800)
       Window: 11.250 msec (0x0012)
     Read Page Scan Type (0x03|0x0046) ncmd 1
       Status: Success (0x00)
       Type: Standard Scan (0x00)
     LE Set Event Mask (0x08|0x0001) ncmd 1
       Status: Success (0x00)
< HCI Command: Write LE Host Supported (0x03|0x006d) plen 2    [hci0] 10.870859
       Supported: 0x01
       Simultaneous: 0x00
     Write LE Host Supported (0x03|0x006d) ncmd 1
       Status: Success (0x00)
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.871059
       Page: 2
     Read Local Extended Features (0x04|0x0004) ncmd 1
       Status: Success (0x00)
       Page: 2/2
       Features: 0x25 0x0b 0x00 0x00 0x00 0x00 0x00 0x00
         Connectionless Slave Broadcast - Master
         Synchronization Train
         Generalized interlaced scan
         Secure Connections (Controller Support)
         Ping
         Train nudging
< HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7     [hci0] 10.871240
       Address: 00:00:00:00:00:00 (OUI 00-00-00)
       Delete all: 0x01
     Delete Stored Link Key (0x03|0x0012) ncmd 1
       Status: Success (0x00)
       Num keys: 0
     Set Event Mask Page 2 (0x03|0x0063) ncmd 1
       Status: Success (0x00)
     Read Local Supported Codecs (0x04|0x000b) ncmd 1
       Status: Success (0x00)
       Number of supported codecs: 2
         Codec: CVSD (0x02)
         Codec: Transparent (0x03)
       Number of vendor codecs: 0
     Read Synchronization Train Parameters (0x03|0x0077) ncmd 1
       Status: Success (0x00)
       Interval: 0.000 msec (0x0000)
       Timeout: 0.000 msec (0x00000000)
       Service data: 0x00
< HCI Command: Write Secure Connection.. (0x03|0x007a) plen 1  [hci0] 10.871947
       Support: Enabled (0x01)
     Write Secure Connections Host Support (0x03|0x007a) ncmd 1
       Status: Success (0x00)
     Unknown (0x08|0x0031) ncmd 1
       Status: Success (0x00)
     LE Set Scan Response Data (0x08|0x0009) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 10.872627
       Scan enable: Page Scan (0x02)
     Write Scan Enable (0x03|0x001a) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Class of Device (0x03|0x0024) plen 3      [hci0] 10.872841
       Class: 0x000000
         Major class: Miscellaneous
         Minor class: 0x00
     Write Class of Device (0x03|0x0024) ncmd 1
       Status: Success (0x00)
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
       02 00 00 00 07 00 00 00 00                       .........       
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
       01 00 00 00 07 00 00 00 00                       .........       
     Write Local Name (0x03|0x0013) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Extended Inquir.. (0x03|0x0052) plen 241  [hci0] 10.873470
       FEC: Not required (0x00)
       Name (complete): builder
       TX power: -1 dBm
       Device ID: USB Implementer's Forum assigned (0x0002)
         Vendor: Linux Foundation (0x1d6b)
         Product: 0x0246
         Version: 5.2.11 (0x052b)
       16-bit Service UUIDs (complete): 4 entries
         Generic Access Profile (0x1800)
         Generic Attribute Profile (0x1801)
         A/V Remote Control (0x110e)
         A/V Remote Control Target (0x110c)
     Write Extended Inquiry Response (0x03|0x0052) ncmd 1
       Status: Success (0x00)
* Unknown packet (code 17 len 13)                              [hci0] 10.873903
       01 00 00 00 01 00 05 00 00 d1 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 10.873913
       02 00 00 00 06 00 d1 0a 00 00                    ..........      
* Unknown packet (code 16 len 7)                               [hci0] 17.803939
       01 00 00 00 05 00 00                             .......         
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 17.803983
       Scan enable: No Scans (0x00)
     Write Scan Enable (0x03|0x001a) ncmd 1
       Status: Success (0x00)
< HCI Command: Vendor (0x3f|0x006f) plen 6                     [hci0] 17.804282
       01 06 02 00 00 00                                ......          
       02 06 01 00 00                                   .....           
* Unknown packet (code 17 len 13)                              [hci0] 17.811580
       01 00 00 00 01 00 05 00 00 d0 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 17.811596
       02 00 00 00 06 00 d0 0a 00 00                    ..........      
       01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
       75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
       02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
       6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
       01 00 00 00 05 00 01                             .......         
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       02 01 01 00 00                                   .....           
       01 07 01 00 04                                   .....           
       02 07 01 00 00                                   .....           
< HCI Command: Vendor (0x3f|0x006f) plen 6                      [hci0] 8.845071
       01 06 02 00 00 01                                ......          
       02 06 01 00 00                                   .....           
     Reset (0x03|0x0003) ncmd 1
       Status: Success (0x00)
       29 19 09 17 20 48 07 11 00                       )... H?       
     Read Local Version Information (0x04|0x0001) ncmd 1
       Status: Success (0x00)
       HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
       LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
       Manufacturer: MediaTek, Inc. (70)
     Read BD ADDR (0x04|0x0009) ncmd 1
       Status: Success (0x00)
       Address: 00:00:46:76:22:01 (OLIVETTI NORTH AMERICA)
     Read Class of Device (0x03|0x0023) ncmd 1
       Status: Success (0x00)
       Class: 0x001f00
         Major class: Uncategorized, specific device code not specified
         Minor class: 0x00
     Read Local Name (0x03|0x0014) ncmd 1
       Status: Success (0x00)
       Name: MTK MT7622 #1
     Read Number of Supported IAC (0x03|0x0038) ncmd 1
       Status: Success (0x00)
       Number of IAC: 4
     Read Current IAC LAP (0x03|0x0039) ncmd 1
       Status: Success (0x00)
       Number of IAC: 1
       Access code: 0x9e8b33 (General Inquiry)
< HCI Command: Set Event Filter (0x03|0x0005) plen 1           [hci0] 10.867890
       Type: Clear All Filters (0x00)
     Set Event Filter (0x03|0x0005) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Connection Accept.. (0x03|0x0016) plen 2  [hci0] 10.868054
       Timeout: 20000.000 msec (0x7d00)
     Write Connection Accept Timeout (0x03|0x0016) ncmd 1
       Status: Success (0x00)
                return;

        memcpy(hdev->le_features, rp->features, 8);
       Mode: Enabled (0x01)
     Write Simple Pairing Mode (0x03|0x0056) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Inquiry Mode (0x03|0x0045) plen 1         [hci0] 10.869239
       Mode: Inquiry Result with RSSI or Extended Inquiry Result (0x02)
     Write Inquiry Mode (0x03|0x0045) ncmd 1
       Status: Success (0x00)
     Read Inquiry Response TX Power Level (0x03|0x0058) ncmd 1
       Status: Success (0x00)
       TX power: -1 dBm
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.869572
       Page: 1
     Read Local Extended Features (0x04|0x0004) ncmd 1
       Status: Success (0x00)
       Page: 1/2
       Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
         Secure Simple Pairing (Host Support)
     Set Event Mask (0x03|0x0001) ncmd 1
       Status: Success (0x00)
< HCI Command: Read Stored Link Key (0x03|0x000d) plen 7       [hci0] 10.869947
       Address: 00:00:00:00:00:00 (OUI 00-00-00)
       Read all: 0x01
     Write Default Link Policy Settings (0x02|0x000f) ncmd 1
       Status: Success (0x00)
     Read Page Scan Activity (0x03|0x001b) ncmd 1
       Status: Success (0x00)
       Interval: 1280.000 msec (0x0800)
       Window: 11.250 msec (0x0012)
     Read Page Scan Type (0x03|0x0046) ncmd 1
       Status: Success (0x00)
       Type: Standard Scan (0x00)
     LE Set Event Mask (0x08|0x0001) ncmd 1
       Status: Success (0x00)
< HCI Command: Write LE Host Supported (0x03|0x006d) plen 2    [hci0] 10.870859
       Supported: 0x01
       Simultaneous: 0x00
     Write LE Host Supported (0x03|0x006d) ncmd 1
       Status: Success (0x00)
< HCI Command: Read Local Extended Fea.. (0x04|0x0004) plen 1  [hci0] 10.871059
       Page: 2
     Read Local Extended Features (0x04|0x0004) ncmd 1
       Status: Success (0x00)
       Page: 2/2
       Features: 0x25 0x0b 0x00 0x00 0x00 0x00 0x00 0x00
         Connectionless Slave Broadcast - Master
         Synchronization Train
         Generalized interlaced scan
         Secure Connections (Controller Support)
         Ping
         Train nudging
< HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7     [hci0] 10.871240
       Address: 00:00:00:00:00:00 (OUI 00-00-00)
       Delete all: 0x01
     Delete Stored Link Key (0x03|0x0012) ncmd 1
       Status: Success (0x00)
       Num keys: 0
     Set Event Mask Page 2 (0x03|0x0063) ncmd 1
       Status: Success (0x00)
     Read Local Supported Codecs (0x04|0x000b) ncmd 1
       Status: Success (0x00)
       Number of supported codecs: 2
         Codec: CVSD (0x02)
         Codec: Transparent (0x03)
       Number of vendor codecs: 0
     Read Synchronization Train Parameters (0x03|0x0077) ncmd 1
       Status: Success (0x00)
       Interval: 0.000 msec (0x0000)
       Timeout: 0.000 msec (0x00000000)
       Service data: 0x00
< HCI Command: Write Secure Connection.. (0x03|0x007a) plen 1  [hci0] 10.871947
       Support: Enabled (0x01)
     Write Secure Connections Host Support (0x03|0x007a) ncmd 1
       Status: Success (0x00)
     Unknown (0x08|0x0031) ncmd 1
       Status: Success (0x00)
     LE Set Scan Response Data (0x08|0x0009) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 10.872627
       Scan enable: Page Scan (0x02)
     Write Scan Enable (0x03|0x001a) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Class of Device (0x03|0x0024) plen 3      [hci0] 10.872841
       Class: 0x000000
         Major class: Miscellaneous
         Minor class: 0x00
     Write Class of Device (0x03|0x0024) ncmd 1
       Status: Success (0x00)
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
       02 00 00 00 07 00 00 00 00                       .........       
* Unknown packet (code 17 len 9)                               [hci0] 10.873069
       01 00 00 00 07 00 00 00 00                       .........       
     Write Local Name (0x03|0x0013) ncmd 1
       Status: Success (0x00)
< HCI Command: Write Extended Inquir.. (0x03|0x0052) plen 241  [hci0] 10.873470
       FEC: Not required (0x00)
       Name (complete): builder
       TX power: -1 dBm
       Device ID: USB Implementer's Forum assigned (0x0002)
         Vendor: Linux Foundation (0x1d6b)
         Product: 0x0246
         Version: 5.2.11 (0x052b)
       16-bit Service UUIDs (complete): 4 entries
         Generic Access Profile (0x1800)
         Generic Attribute Profile (0x1801)
         A/V Remote Control (0x110e)
         A/V Remote Control Target (0x110c)
     Write Extended Inquiry Response (0x03|0x0052) ncmd 1
       Status: Success (0x00)
* Unknown packet (code 17 len 13)                              [hci0] 10.873903
       01 00 00 00 01 00 05 00 00 d1 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 10.873913
       02 00 00 00 06 00 d1 0a 00 00                    ..........      
* Unknown packet (code 16 len 7)                               [hci0] 17.803939
       01 00 00 00 05 00 00                             .......         
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1          [hci0] 17.803983
       Scan enable: No Scans (0x00)
     Write Scan Enable (0x03|0x001a) ncmd 1
       Status: Success (0x00)
< HCI Command: Vendor (0x3f|0x006f) plen 6                     [hci0] 17.804282
       01 06 02 00 00 00                                ......          
       02 06 01 00 00                                   .....           
* Unknown packet (code 17 len 13)                              [hci0] 17.811580
       01 00 00 00 01 00 05 00 00 d0 0a 00 00           .............   
* Unknown packet (code 17 len 10)                              [hci0] 17.811596
       02 00 00 00 06 00 d0 0a 00 00                    ..........      
      01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
      75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
      02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
      6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
      01 00 00 00 05 00 01                             .......         
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      01 07 01 00 04                                   .....           
      02 07 01 00 00                                   .....           
< HCI Command: Vendor (0x3f|0x006f) plen 6                      [hci0] 8.845071
      01 06 02 00 00 01                                ......          
      02 06 01 00 00                                   .....           
    Reset (0x03|0x0003) ncmd 1
      Status: Success (0x00)
      29 19 09 17 20 48 07 11 00                       )... H?       
    Read Local Version Information (0x04|0x0001) ncmd 1
      Status: Success (0x00)
      HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
      LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
      Manufacturer: MediaTek, Inc. (70)
    Read BD ADDR (0x04|0x0009) ncmd 1
      Status: Success (0x00)
      Address: 00:00:46:76:22:01 (OLIVETTI NORTH AMERICA)
    Read Class of Device (0x03|0x0023) ncmd 1
      Status: Success (0x00)
      Class: 0x001f00
        Major class: Uncategorized, specific device code not specified
        Minor class: 0x00
    Read Local Name (0x03|0x0014) ncmd 1
      Status: Success (0x00)
      Name: MTK MT7622 #1
    Read Number of Supported IAC (0x03|0x0038) ncmd 1
      Status: Success (0x00)
      Number of IAC: 4
    Read Current IAC LAP (0x03|0x0039) ncmd 1
      Status: Success (0x00)
      Number of IAC: 1
      Access code: 0x9e8b33 (General Inquiry)
< HCI Command: Set Event Filter (0x03|0x0005) plen 1           [hci0] 10.867890
      Type: Clear All Filters (0x00)
    Set Event Filter (0x03|0x0005) ncmd 1
      Status: Success (0x00)
< HCI Command: Write Connection Accept.. (0x03|0x0016) plen 2  [hci0] 10.868054
      Timeout: 20000.000 msec (0x7d00)
    Write Connection Accept Timeout (0x03|0x0016) ncmd 1
      Status: Success (0x00)
@@ -927,6 +927,8 @@ static void hci_cc_le_read_local_features(struct hci_dev *hdev,
               return;
 
       memcpy(hdev->le_features, rp->features, 8);
+       hdev->le_features[0] = 0;
+       hdev->le_features[1] = 0;
 }

      01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
      75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
      02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
      6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
      01 00 00 00 05 00 01                             .......         
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
{
        struct hci_event_hdr *hdr = (void *)skb->data;

        /* Fix up the vendor event id with HCI_VENDOR_PKT instead of
         * 0xe4 so that btmon can parse the kind of vendor event properly.
         */
        if (hdr->evt == 0xe4)
                hdr->evt = HCI_VENDOR_PKT;

        /* Each HCI event would go through the core. */
        return hci_recv_frame(hdev, skb);
}
      01 07 01 00 04                                   .....           
      02 07 01 00 00                                   .....           
      29 19 09 17 20 48 07 11 00                       )... H?       
    Read Local Version Information (0x04|0x0001) ncmd 1
      Status: Success (0x00)
      HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
      LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
      Manufacturer: MediaTek, Inc. (70)
@@ -927,6 +927,8 @@ static void hci_cc_le_read_local_features(struct hci_dev *hdev,
               return;
 

       memcpy(hdev->le_features, rp->features, 8);
+       hdev->le_features[0] = 0;
+       hdev->le_features[1] = 0;
 }

      01 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 6c  ..............bl
      75 65 74 6f 6f 74 68 64 00 00 00 00 00 00        uetoothd......  
* Unknown packet (code 14 len 30)                                      0.641592
      02 00 00 00 02 00 01 0e 00 01 00 00 00 10 62 74  ..............bt
      6d 6f 6e 00 00 00 00 00 00 00 00 00 00 00        mon...........  
* Unknown packet (code 16 len 7)                                [hci0] 6.536771
      01 00 00 00 05 00 01                             .......         
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
      02 01 01 00 00                                   .....           
{
        struct hci_event_hdr *hdr = (void *)skb->data;

        /* Fix up the vendor event id with HCI_VENDOR_PKT instead of
         * 0xe4 so that btmon can parse the kind of vendor event properly.
         */
        if (hdr->evt == 0xe4)
                hdr->evt = HCI_VENDOR_PKT;

        /* Each HCI event would go through the core. */
        return hci_recv_frame(hdev, skb);
}
      01 07 01 00 04                                   .....           
      02 07 01 00 00                                   .....           
      29 19 09 17 20 48 07 11 00                       )... H…       
    Read Local Version Information (0x04|0x0001) ncmd 1
      Status: Success (0x00)
      HCI version: Bluetooth 4.2 (0x08) - Revision 4359 (0x1107)
      LMP version: Bluetooth 4.2 (0x08) - Subversion 2329 (0x0919)
      Manufacturer: MediaTek, Inc. (70)
@@ -927,6 +927,8 @@ static void hci_cc_le_read_local_features(struct hci_dev *hdev,
               return;
 

       memcpy(hdev->le_features, rp->features, 8);
+       hdev->le_features[0] = 0;
+       hdev->le_features[1] = 0;
 }

---
 drivers/bluetooth/btuart.c | 73 ++++++++++++++++++++++++----------------------
 drivers/bluetooth/btuart.h | 30 +++++++++++++++++++
 2 files changed, 68 insertions(+), 35 deletions(-)
 create mode 100644 drivers/bluetooth/btuart.h
index 03e980f..ab7f836 100644
@@ -33,35 +33,11 @@
 #include <net/bluetooth/hci_core.h>
 
 #include "h4_recv.h"
+#include "btuart.h"
 #include "btbcm.h"
 
 #define VERSION "1.0"
 
-struct btuart_vnd {
-	const struct h4_recv_pkt *recv_pkts;
-	int recv_pkts_cnt;
-	unsigned int manufacturer;
-	int (*open)(struct hci_dev *hdev);
-	int (*close)(struct hci_dev *hdev);
-	int (*setup)(struct hci_dev *hdev);
-};
-
-struct btuart_dev {
-	struct hci_dev *hdev;
-	struct serdev_device *serdev;
-
-	struct work_struct tx_work;
-	unsigned long tx_state;
-	struct sk_buff_head txq;
-
-	struct sk_buff *rx_skb;
-
-	const struct btuart_vnd *vnd;
-};
-
-#define BTUART_TX_STATE_ACTIVE	1
-#define BTUART_TX_STATE_WAKEUP	2
-
 static void btuart_tx_work(struct work_struct *work)
 {
 	struct btuart_dev *bdev = container_of(work, struct btuart_dev,

@@ -187,13 +163,27 @@ static int btuart_setup(struct hci_dev *hdev)
 	return 0;
 }
 
+static int btuart_shutdown(struct hci_dev *hdev)
+{
+	struct btuart_dev *bdev = hci_get_drvdata(hdev);
+
+	if (bdev->vnd->shutdown)
+		return bdev->vnd->shutdown(hdev);
+
+	return 0;
+}
+
 static int btuart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct btuart_dev *bdev = hci_get_drvdata(hdev);
 
-	/* Prepend skb with frame type */
-	memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
-	skb_queue_tail(&bdev->txq, skb);
+	if (bdev->vnd->send) {
+		bdev->vnd->send(hdev, skb);
+	} else {
+		/* Prepend skb with frame type */
+		memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
+		skb_queue_tail(&bdev->txq, skb);
+	}
 
 	btuart_tx_wakeup(bdev);
 	return 0;

@@ -204,14 +194,23 @@ static int btuart_receive_buf(struct serdev_device *serdev, const u8 *data,
 {
 	struct btuart_dev *bdev = serdev_device_get_drvdata(serdev);
 	const struct btuart_vnd *vnd = bdev->vnd;
+	int err;
 
-	bdev->rx_skb = h4_recv_buf(bdev->hdev, bdev->rx_skb, data, count,
-				   vnd->recv_pkts, vnd->recv_pkts_cnt);
-	if (IS_ERR(bdev->rx_skb)) {
-		int err = PTR_ERR(bdev->rx_skb);
-		bt_dev_err(bdev->hdev, "Frame reassembly failed (%d)", err);
-		bdev->rx_skb = NULL;
-		return err;
+	if (bdev->vnd->recv) {
+		err = bdev->vnd->recv(bdev->hdev, data, count);
+		if (err < 0)
+			return err;
+	} else {
+		bdev->rx_skb = h4_recv_buf(bdev->hdev, bdev->rx_skb,
+					   data, count, vnd->recv_pkts,
+					   vnd->recv_pkts_cnt);
+		if (IS_ERR(bdev->rx_skb)) {
+			err = PTR_ERR(bdev->rx_skb);
+			bt_dev_err(bdev->hdev,
+				   "Frame reassembly failed (%d)", err);
+			bdev->rx_skb = NULL;
+			return err;
+		}
 	}
 
 	bdev->hdev->stat.byte_rx += count;

@@ -429,6 +428,9 @@ static int btuart_probe(struct serdev_device *serdev)
 	if (!bdev->vnd)
 		bdev->vnd = &default_vnd;
 
+	if (bdev->vnd->init)
+		bdev->data = bdev->vnd->init(&serdev->dev);
+
 	bdev->serdev = serdev;
 	serdev_device_set_drvdata(serdev, bdev);
 

@@ -460,6 +462,7 @@ static int btuart_probe(struct serdev_device *serdev)
 	hdev->close = btuart_close;
 	hdev->flush = btuart_flush;
 	hdev->setup = btuart_setup;
+	hdev->shutdown = btuart_shutdown;
 	hdev->send  = btuart_send_frame;
 	SET_HCIDEV_DEV(hdev, &serdev->dev);
 

new file mode 100644
index 0000000..6c1fe31
@@ -0,0 +1,30 @@
+struct btuart_vnd {
+	const struct h4_recv_pkt *recv_pkts;
+	int recv_pkts_cnt;
+	unsigned int manufacturer;
+	void *(*init)(struct device *dev);
+
+	int (*open)(struct hci_dev *hdev);
+	int (*close)(struct hci_dev *hdev);
+	int (*setup)(struct hci_dev *hdev);
+	int (*shutdown)(struct hci_dev *hdev);
+	int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
+	int (*recv)(struct hci_dev *hdev, const u8 *data, size_t count);
+};
+
+struct btuart_dev {
+	struct hci_dev *hdev;
+	struct serdev_device *serdev;
+
+	struct work_struct tx_work;
+	unsigned long tx_state;
+	struct sk_buff_head txq;
+
+	struct sk_buff *rx_skb;
+
+	const struct btuart_vnd *vnd;
+	void *data;
+};
+
+#define BTUART_TX_STATE_ACTIVE	1
+#define BTUART_TX_STATE_WAKEUP	2

2.7.4
---
 drivers/bluetooth/Kconfig     |  12 ++
 drivers/bluetooth/Makefile    |   2 +
 drivers/bluetooth/btmtkuart.c | 383 ++++++++++++++++++++++++++++++++++++++++++
 drivers/bluetooth/btmtkuart.h | 119 +++++++++++++
 drivers/bluetooth/btuart.c    |  18 ++
 5 files changed, 534 insertions(+)
 create mode 100644 drivers/bluetooth/btmtkuart.c
 create mode 100644 drivers/bluetooth/btmtkuart.h
index 6d69ac2..13aff1ed 100644
@@ -85,6 +85,18 @@ config BT_HCIBTUART
 	  Say Y here to compile support for Bluetooth UART devices into the
 	  kernel or say M to compile it as module (btuart).
 
+config BT_HCIBTUART_MTK
+	tristate "MediaTek HCI UART driver"
+	depends on BT_HCIBTUART
+	default y
+	help
+	  MediaTek Bluetooth HCI UART driver.
+	  This driver is required if you want to use MediaTek Bluetooth
+	  with serial interface.
+
+	  Say Y here to compile support for MediaTek Bluetooth UART devices
+	  into the kernel or say M to compile it as module (btmtkuart).
+
 config BT_HCIUART
 	tristate "HCI UART driver"
 	depends on SERIAL_DEV_BUS || !SERIAL_DEV_BUS

index 60a19cb..c9a8926 100644
@@ -26,6 +26,8 @@ obj-$(CONFIG_BT_BCM)		+= btbcm.o
 obj-$(CONFIG_BT_RTL)		+= btrtl.o
 obj-$(CONFIG_BT_QCA)		+= btqca.o
 
+obj-$(CONFIG_BT_HCIBTUART_MTK)	+= btmtkuart.o
+
 obj-$(CONFIG_BT_HCIUART_NOKIA)	+= hci_nokia.o
 
 obj-$(CONFIG_BT_HCIRSI)		+= btrsi.o

index ab7f836..169bf1a 100644
@@ -35,6 +35,7 @@
 #include "h4_recv.h"
 #include "btuart.h"
 #include "btbcm.h"
+#include "btmtkuart.h"
 
 #define VERSION "1.0"
 

@@ -396,6 +397,12 @@ static const struct h4_recv_pkt bcm_recv_pkts[] = {
 	{ BCM_RECV_NULL,    .recv = hci_recv_diag  },
 };
 
+static const struct h4_recv_pkt mtk_recv_pkts[] = {
+	{ H4_RECV_ACL,      .recv = hci_recv_frame },
+	{ H4_RECV_SCO,      .recv = hci_recv_frame },
+	{ H4_RECV_EVENT,    .recv = mtk_btuart_hci_frame },
+};
+
 static const struct btuart_vnd bcm_vnd = {
 	.recv_pkts	= bcm_recv_pkts,
 	.recv_pkts_cnt	= ARRAY_SIZE(bcm_recv_pkts),

@@ -403,6 +410,16 @@ static const struct btuart_vnd bcm_vnd = {
 	.setup		= bcm_setup,
 };
 
+static const struct btuart_vnd mtk_vnd = {
+	.recv_pkts	= mtk_recv_pkts,
+	.recv_pkts_cnt	= ARRAY_SIZE(mtk_recv_pkts),
+	.init		= mtk_btuart_init,
+	.setup		= mtk_btuart_setup,
+	.shutdown	= mtk_btuart_shutdown,
+	.send		= mtk_btuart_send,
+	.recv		= mtk_btuart_recv,
+};
+
 static const struct h4_recv_pkt default_recv_pkts[] = {
 	{ H4_RECV_ACL,      .recv = hci_recv_frame },
 	{ H4_RECV_SCO,      .recv = hci_recv_frame },

@@ -487,6 +504,7 @@ static void btuart_remove(struct serdev_device *serdev)
 #ifdef CONFIG_OF
 static const struct of_device_id btuart_of_match_table[] = {
 	{ .compatible = "brcm,bcm43438-bt", .data = &bcm_vnd },
+	{ .compatible = "mediatek,mt7622-bluetooth", .data = &mtk_vnd },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, btuart_of_match_table);

2.7.4
---
 MAINTAINERS | 8 ++++++++
 1 file changed, 8 insertions(+)
index 0a1410d..3e9fa7c2 100644
@@ -8874,6 +8874,14 @@ F:	include/uapi/linux/meye.h
 F:	include/uapi/linux/ivtv*
 F:	include/uapi/linux/uvcvideo.h
 
+MEDIATEK BLUETOOTH DRIVER
+M:	Sean Wang <[email protected]>
+L:	linux-bluetooth at vger.kernel.org
+L:	linux-mediatek at lists.infradead.org (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
+F:	drivers/bluetooth/btmtkuart.c
+
 MEDIATEK CIR DRIVER
 M:	Sean Wang <[email protected]>
 S:	Maintained

2.7.4

add support for Bluetooth on MT7622 SoC

[email protected]

[email protected]

[email protected]

[email protected]

[email protected]

Marcel Holtmann

Sean Wang

Sean Wang

Marcel Holtmann

Sean Wang

Marcel Holtmann

Sean Wang

Marcel Holtmann

Sean Wang

Sean Wang

[email protected]

[email protected]

[email protected]