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* Atheros 1525/QCA6174 BT issue
@ 2018-03-08  8:27 Takashi Iwai
  2018-03-08  9:06 ` Marcel Holtmann
  0 siblings, 1 reply; 11+ messages in thread
From: Takashi Iwai @ 2018-03-08  8:27 UTC (permalink / raw)
  To: Marcel Holtmann, Johan Hedberg; +Cc: linux-bluetooth, linux-kernel

Hi,

we've got a but report about the broken Atheros BT on the recent
kernels:
  http://bugzilla.opensuse.org/show_bug.cgi?id=1082504

In short, btusb can't load the patch ar3k/AthrBT_0x00000200.dfu, and
this could be worked around by the patch to move 0cf3:3004 blacklist
entry to use BTUSB_QCA_ROM instead of BTUSB_ATH3012.

And this looks like a long-standing problem, at least for over two
years.  Many web pages suggest the same patch, but it's never merged
to upstream.

So this made me wonder what's going on.  I see that the BTUSB_ATH3012
quirk was originally introduced just for this chip id (0cf3:3004).
Is it a different variant from the original chip that causes a
problem?

I'm happy to get any fix patch and can provide a test kernel to the
reporter.


FWIW, the device looks like:

T:  Bus=01 Lev=01 Prnt=01 Port=09 Cnt=03 Dev#=  4 Spd=12   MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0cf3 ProdID=3004 Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms

And the lsusb output:

Bus 001 Device 004: ID 0cf3:3004 Qualcomm Atheros Communications AR3012
Bluetooth 4.0


thanks,

Takashi

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2018-03-15 18:32 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-08  8:27 Atheros 1525/QCA6174 BT issue Takashi Iwai
2018-03-08  9:06 ` Marcel Holtmann
2018-03-08  9:16   ` Takashi Iwai
2018-03-13  8:05     ` Takashi Iwai
2018-03-13  8:10       ` Marcel Holtmann
2018-03-13  8:32         ` Takashi Iwai
2018-03-13  8:38           ` Marcel Holtmann
2018-03-13  8:50             ` Takashi Iwai
2018-03-13  9:15               ` Marcel Holtmann
2018-03-15 15:56                 ` Takashi Iwai
2018-03-15 18:32                   ` Marcel Holtmann

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