Return-Path: Message-ID: <526F8804.9060906@canonical.com> Date: Tue, 29 Oct 2013 18:03:48 +0800 From: Hui Wang MIME-Version: 1.0 To: tedd.an@intel.com, johan.hedberg@intel.com, marcel@holtmann.org, xiong.y.zhang@intel.com, gustavo.padovan@collabora.co.uk CC: linux-bluetooth@vger.kernel.org Subject: Intel 7260 bluetooth malfunction when it is connected to EHCI bus Content-Type: text/plain; charset=ISO-8859-1; format=flowed List-ID: The problem is: On the machine which has Intel 7260 BT module, i use it to connect a bluetooth headset, it can successfully scan and connect to the headset, when i play sound to the bt headset, the problem comes, if the bt module is connected to the XHCI, it can work very well. u@u-Lenovo-B4400:~$ lsusb -t 1-7:1.0: No such file or directory /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M |__ Port 6: Dev 8, If 0, Class=HID, Driver=usbhid, 1.5M |__ Port 7: Dev 2, If 0, Class=vend., Driver=, 12M |__ Port 11: Dev 3, If 0, Class='bInterfaceClass 0xe0 not yet handled', Driver=btusb, 12M |__ Port 11: Dev 3, If 1, Class='bInterfaceClass 0xe0 not yet handled', Driver=btusb, 12M But if the bt module is connected to the EHCI, it always fails to play sound. u@u-Lenovo-B4400:~$ lsusb -t /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/3p, 480M |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/8p, 480M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/3p, 480M |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M |__ Port 5: Dev 3, If 0, Class='bInterfaceClass 0xe0 not yet handled', Driver=btusb, 12M |__ Port 5: Dev 3, If 1, Class='bInterfaceClass 0xe0 not yet handled', Driver=btusb, 12M |__ Port 6: Dev 4, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M |__ Port 6: Dev 4, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M --------------------------------------------------------------------------------------------------------- The BT moudle version, firmware version and linux kernel version: dmesg snippet, [ 2.164386] Bluetooth: hci0: read Intel version: 370710018002030d00 [ 2.200701] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq And the firmware was got from http://permalink.gmane.org/gmane.linux.bluez.kernel/37580. To verify the firmware is the latest, i execute following commands, u@u-Lenovo-B4400:~$ sudo hcitool cmd 0x3f 0x005 0x00 < HCI Command: ogf 0x3f, ocf 0x0005, plen 1 00 > HCI Event: 0x0e plen 13 01 05 FC 00 37 07 10 01 80 02 03 0D 2E On the machine, i installed ubuntu-12.04 (kernel is 3.5), then i replaced the kernel to the linux-3.8 and the latest upstream kernel linux-3.12.0-rc6, the situation had no difference, the problem still can be reproduced on very linux kernel version. ---------------------------------------------------------------------------------------------------------- My investigation: I did the test on dozens of laptops on which all installed intel 7260 wifi+bt combo, in case the bt module is connected to EHCI bus, it will 100% fail to play sound to the bt headset. If the bt module is connected to the XHCI bus, it will work very well, including play audio to a bt headset. And more investigation show, if the bt module is on the EHCI bus, it can't receive any SCO packet like this, u@u-Lenovo-B4400:~$ hciconfig hci0: Type: BR/EDR Bus: USB BD Address: 00:15:00:CC:2D:D2 ACL MTU: 1021:5 SCO MTU: 96:5 UP RUNNING PSCAN RX bytes:6687 acl:61 sco:0 events:308 errors:0 TX bytes:19367 acl:70 sco:3 commands:179 errors:0 if the bt module is on the XHCI bus, it can transmit and receive SCO packets very well, u@u-Lenovo-B4400:~$ hciconfig hci0: Type: BR/EDR Bus: USB BD Address: 00:15:00:CC:2D:D2 ACL MTU: 1021:5 SCO MTU: 96:5 UP RUNNING PSCAN RX bytes:572756 acl:47 sco:11173 events:221 errors:0 TX bytes:586261 acl:55 sco:11137 commands:137 errors:0 ---------------------------------------------------------------------------------------------------------- So could anybody be kindly help to confirm this problem, and could the maintainer of intel 7260 bt driver/firmware be kindly to solve this problem? Thanks in advance. Hui.