bluetooth BLE chip broadcom BCM20702

Nicolas Nico

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Jul 20, 2014, 7:53:23 AM7/20/14

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hi,
installed kitkat 4.4.2 RC2 on my pc with formula 5 maximus wifi and BT chip module
it recognize the wifi but not the BT, the broadcom 20702 seems to be popular chip in pcs for BT4.0
is it possible to add this driver in the kernel for this BT chip?
regards

Nicolas Nico

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Jul 24, 2014, 4:39:47 AM7/24/14

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found info in linux mint on my dongle

hci0:    Type: BR/EDR Bus: USB
    BD Address: 5C:F3:70:60:7D:7E ACL MTU: 1021:8 SCO MTU: 64:1
    UP RUNNING PSCAN ISCAN
    RX bytes:10247 acl:154 sco:0 events:391 errors:0
    TX bytes:7076 acl:154 sco:0 commands:233 errors:0
    Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
    Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
    Link policy: RSWITCH SNIFF
    Link mode: SLAVE ACCEPT
    Name: 'mint-0'
    Class: 0x740100
    Service Classes: Rendering, Object Transfer, Audio, Telephony
    Device Class: Computer, Uncategorized
    HCI Version: 4.0 (0x6) Revision: 0x1000
    LMP Version: 4.0 (0x6) Subversion: 0x220e
    Manufacturer: Broadcom Corporation (15)

T: Bus=01 Lev=02 Prnt=02 Port=05 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0b05 ProdID=17cb Rev=01.12
S: Manufacturer=Broadcom Corp
S: Product=BCM920702 Bluetooth 4.0
S: SerialNumber=5CF370607D7E
C: #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)

but downloaded the repo for the kitkat dev, searching in btusb.c and found

    /* Broadcom BCM20702A0 */
    { USB_DEVICE(0x0b05, 0x17b5) },
    { USB_DEVICE(0x0b05, 0x17cb) },
    { USB_DEVICE(0x04ca, 0x2003) },
    { USB_DEVICE(0x0489, 0xe042) },
    { USB_DEVICE(0x413c, 0x8197) },

dont know why my dongle isn recognized, if it is in this file?

Chih-Wei Huang

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Jul 24, 2014, 11:46:21 PM7/24/14

to Android-x86

Kitkat-x86 doesn't use btusb.
The bluedroid communicates with the bluetooth usb
device directly.

Check the following output in kitkat-x86:
lsmod
lsusb -v
dmesg

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Joep Hein

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Jan 10, 2015, 1:58:58 PM1/10/15

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No luck so far. This is all I got using dmesg:

<6>[ 721.126280] usb 1-2: new full-speed USB device number 3 using ohci-pci

<6>[ 721.366239] usb 1-2: New USB device found, idVendor=0b05, idProduct=17cb

<6>[ 721.366245] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumbe

r=3

<6>[ 721.366249] usb 1-2: Product: BCM20702A0

<6>[ 721.366252] usb 1-2: Manufacturer: Broadcom Corp

<6>[ 721.366255] usb 1-2: SerialNumber: 5CF3706623CB

no new device was added like for other new usb devices like my integrated webcam.