[PATCH 0/1] Bluetooth: btrtl: Add support for RTL8761B

From: sztsian
Date: Fri Apr 10 2020 - 10:00:40 EST


From: Zamir SUN <sztsian@xxxxxxxxx>

This patch adds support for the RTL8761B USB Bluetooth dongle.

When I got the RTL8761B dongle, I see it is actually recognised as
RTL8761A in my system (5.5.15-200.fc31.x86_64 on Fedora). And the
userspace cannot detect bluetooth devices in such situation.

[34689.158047] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[34689.159083] Bluetooth: hci0: RTL: rom_version status=0 version=1
[34689.159088] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_fw.bin
[34689.159498] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_config.bin
[34689.159522] bluetooth hci0: Direct firmware load for rtl_bt/rtl8761a_config.bin failed with error -2
[34689.159529] Bluetooth: hci0: RTL: cfg_sz -2, total sz 20204
[34691.248484] Bluetooth: hci0: command 0xfc20 tx timeout

With great help from Icenowy Zheng she helped identifying the firmware
from the vendor-provided Windows driver. After applying this patch along
with the firmware I am able to use this dongle.

Note, I don't have RTL8761A device, so I would appreciate if someone
can help test in case this patch breaks RTL8761A.

Ziqian SUN (Zamir) (1):
Bluetooth: btrtl: Add support for RTL8761B

drivers/bluetooth/btrtl.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

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2.25.2