From: Ziqian SUN (Zamir) <[email protected]>
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
Icenowy Zheng offered great help by 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.
The RTL8761A information is from the following Github issue
https://github.com/lwfinger/rtlwifi_new/issues/58
[ 41.468873] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000a lmp_ver=06 lmp_subver=8761
Ziqian SUN (Zamir) (1):
Bluetooth: btrtl: Add support for RTL8761B
drivers/bluetooth/btrtl.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--
2.25.2
From: "Ziqian SUN (Zamir)" <[email protected]>
Add new compatible device RTL8761B.
Signed-off-by: Ziqian SUN (Zamir) <[email protected]>
---
drivers/bluetooth/btrtl.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 67f4bc21e7c5..3a9afc905f24 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -130,12 +130,19 @@ static const struct id_table ic_id_table[] = {
.cfg_name = "rtl_bt/rtl8821c_config" },
/* 8761A */
- { IC_MATCH_FL_LMPSUBV, RTL_ROM_LMP_8761A, 0x0,
+ { IC_INFO(RTL_ROM_LMP_8761A, 0xa),
.config_needed = false,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8761a_fw.bin",
.cfg_name = "rtl_bt/rtl8761a_config" },
+ /* 8761B */
+ { IC_INFO(RTL_ROM_LMP_8761A, 0xb),
+ .config_needed = false,
+ .has_rom_version = true,
+ .fw_name = "rtl_bt/rtl8761b_fw.bin",
+ .cfg_name = "rtl_bt/rtl8761b_config" },
+
/* 8822C with UART interface */
{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
IC_MATCH_FL_HCIBUS,
@@ -267,6 +274,7 @@ static int rtlbt_parse_firmware(struct hci_dev *hdev,
{ RTL_ROM_LMP_8723B, 9 }, /* 8723D */
{ RTL_ROM_LMP_8821A, 10 }, /* 8821C */
{ RTL_ROM_LMP_8822B, 13 }, /* 8822C */
+ { RTL_ROM_LMP_8761A, 14 }, /* 8761B */
};
min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
--
2.25.2
Hi Zamir,
> Add new compatible device RTL8761B.
>
> Signed-off-by: Ziqian SUN (Zamir) <[email protected]>
> ---
> drivers/bluetooth/btrtl.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
can you also please include the content of /sys/kernel/debug/usb/devices for this device in the commit message.
And if you run btmon before plugging it in, I like to see what LE Features of Bluetooth 5.0 this dongle really offers.
Regards
Marcel
On 4/11/20 1:36 AM, Marcel Holtmann wrote:
> Hi Zamir,
>
>> Add new compatible device RTL8761B.
>>
>> Signed-off-by: Ziqian SUN (Zamir) <[email protected]>
>> ---
>> drivers/bluetooth/btrtl.c | 10 +++++++++-
>> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> can you also please include the content of /sys/kernel/debug/usb/devices for this device in the commit message.
>
> And if you run btmon before plugging it in, I like to see what LE Features of Bluetooth 5.0 this dongle really offers.
>
Hi Marcel,
I think you want this section
Supported settings: 0x0001bfff
Powered
Connectable
Fast Connectable
Discoverable
Bondable
Link Security
Secure Simple Pairing
BR/EDR
High Speed
Low Energy
Advertising
Secure Connections
Debug Keys
Privacy
Static Address
PHY Configuration
Full log of btmon is available here, with the mac address masked
http://fars.ee/Lu85
I'll send a v3 to include the usb info in the commit message shortly.
> Regards
>
> Marcel
>
--
Zamir SUN
Fedora user
GPG : 1D86 6D4A 49CE 4BBD 72CF FCF5 D856 6E11 F2A0 525E
Hi Zamir,
>>> Add new compatible device RTL8761B.
>>>
>>> Signed-off-by: Ziqian SUN (Zamir) <[email protected]>
>>> ---
>>> drivers/bluetooth/btrtl.c | 10 +++++++++-
>>> 1 file changed, 9 insertions(+), 1 deletion(-)
>> can you also please include the content of /sys/kernel/debug/usb/devices for this device in the commit message.
>> And if you run btmon before plugging it in, I like to see what LE Features of Bluetooth 5.0 this dongle really offers.
>
> Hi Marcel,
>
> I think you want this section
>
> Supported settings: 0x0001bfff
> Powered
> Connectable
> Fast Connectable
> Discoverable
> Bondable
> Link Security
> Secure Simple Pairing
> BR/EDR
> High Speed
> Low Energy
> Advertising
> Secure Connections
> Debug Keys
> Privacy
> Static Address
> PHY Configuration
>
> Full log of btmon is available here, with the mac address masked http://fars.ee/Lu85
>
> I'll send a v3 to include the usb info in the commit message shortly.
This hardware is funny. Before the firmware patching it says this:
< HCI Command: Read Local Version In.. (0x04|0x0001) plen 0
> HCI Event: Command Complete (0x0e) plen 12
Read Local Version Information (0x04|0x0001) ncmd 2
Status: Success (0x00)
HCI version: Bluetooth 5.1 (0x0a) - Revision 11 (0x000b)
LMP version: Bluetooth 5.1 (0x0a) - Subversion 34657 (0x8761)
Manufacturer: Realtek Semiconductor Corporation (93)
And after the firmware patching it downgrades to Bluetooth 5.0 standard:
< HCI Command: Read Local Version... (0x04|0x0001) plen 0
> HCI Event: Command Complete (0x0e) plen 12
Read Local Version Information (0x04|0x0001) ncmd 2
Status: Success (0x00)
HCI version: Bluetooth 5.0 (0x09) - Revision 55448 (0xd898)
LMP version: Bluetooth 5.0 (0x09) - Subversion 50044 (0xc37c)
Manufacturer: Realtek Semiconductor Corporation (93)
Anyway, I was after these LE Features:
< HCI Command: LE Read Local Suppo.. (0x08|0x0003) plen 0
> HCI Event: Command Complete (0x0e) plen 12
LE Read Local Supported Features (0x08|0x0003) ncmd 2
Status: Success (0x00)
Features: 0xfd 0x5f 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
Extended Reject Indication
Slave-initiated Features Exchange
LE Ping
LE Data Packet Length Extension
LL Privacy
Extended Scanner Filter Policies
LE 2M PHY
Stable Modulation Index - Transmitter
Stable Modulation Index - Receiver
LE Coded PHY
LE Extended Advertising
Channel Selection Algorithm #2
This seems to be a genuine USB dongle with Bluetooth 5.0 features.
Regards
Marcel