Hi Archie,
>>>>>> RTL8822 chipset supports WBS, and this information is conveyed in
>>>>>> btusb.c. However, the UART driver doesn't have this information just
>>>>>> yet.
>>>>>>
>>>>>> Signed-off-by: Archie Pusaka <apusaka@xxxxxxxxxxxx>
>>>>>> Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
>>>>>> ---
>>>>>>
>>>>>> drivers/bluetooth/btrtl.c | 26 ++++++++++++++++----------
>>>>>> drivers/bluetooth/btrtl.h | 2 ++
>>>>>> drivers/bluetooth/hci_h5.c | 5 +----
>>>>>> 3 files changed, 19 insertions(+), 14 deletions(-)
>>>>>>
>>>>>> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
>>>>>> index e7fe5fb22753..988a09860c6b 100644
>>>>>> --- a/drivers/bluetooth/btrtl.c
>>>>>> +++ b/drivers/bluetooth/btrtl.c
>>>>>> @@ -719,17 +719,8 @@ int btrtl_download_firmware(struct hci_dev *hdev,
>>>>>> }
>>>>>> EXPORT_SYMBOL_GPL(btrtl_download_firmware);
>>>>>>
>>>>>> -int btrtl_setup_realtek(struct hci_dev *hdev)
>>>>>> +void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
>>>>>> {
>>>>>> - struct btrtl_device_info *btrtl_dev;
>>>>>> - int ret;
>>>>>> -
>>>>>> - btrtl_dev = btrtl_initialize(hdev, NULL);
>>>>>> - if (IS_ERR(btrtl_dev))
>>>>>> - return PTR_ERR(btrtl_dev);
>>>>>> -
>>>>>> - ret = btrtl_download_firmware(hdev, btrtl_dev);
>>>>>> -
>>>>>> /* Enable controller to do both LE scan and BR/EDR inquiry
>>>>>> * simultaneously.
>>>>>> */
>>>>>> @@ -750,6 +741,21 @@ int btrtl_setup_realtek(struct hci_dev *hdev)
>>>>>> rtl_dev_dbg(hdev, "WBS supported not enabled.");
>>>>>> break;
>>>>>> }
>>>>>> +}
>>>>>> +EXPORT_SYMBOL_GPL(btrtl_set_quirks);
>>>>>> +
>>>>>> +int btrtl_setup_realtek(struct hci_dev *hdev)
>>>>>> +{
>>>>>> + struct btrtl_device_info *btrtl_dev;
>>>>>> + int ret;
>>>>>> +
>>>>>> + btrtl_dev = btrtl_initialize(hdev, NULL);
>>>>>> + if (IS_ERR(btrtl_dev))
>>>>>> + return PTR_ERR(btrtl_dev);
>>>>>> +
>>>>>> + ret = btrtl_download_firmware(hdev, btrtl_dev);
>>>>>> +
>>>>>> + btrtl_set_quirks(hdev, btrtl_dev);
>>>>>>
>>>>>> btrtl_free(btrtl_dev);
>>>>>> return ret;
>>>>>> diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h
>>>>>> index 2a582682136d..260167f01b08 100644
>>>>>> --- a/drivers/bluetooth/btrtl.h
>>>>>> +++ b/drivers/bluetooth/btrtl.h
>>>>>> @@ -54,6 +54,8 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
>>>>>> void btrtl_free(struct btrtl_device_info *btrtl_dev);
>>>>>> int btrtl_download_firmware(struct hci_dev *hdev,
>>>>>> struct btrtl_device_info *btrtl_dev);
>>>>>> +void btrtl_set_quirks(struct hci_dev *hdev,
>>>>>> + struct btrtl_device_info *btrtl_dev);
>>>>>> int btrtl_setup_realtek(struct hci_dev *hdev);
>>>>>> int btrtl_shutdown_realtek(struct hci_dev *hdev);
>>>>>> int btrtl_get_uart_settings(struct hci_dev *hdev,
>>>>>> diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
>>>>>> index 27e96681d583..e0520639f4ba 100644
>>>>>> --- a/drivers/bluetooth/hci_h5.c
>>>>>> +++ b/drivers/bluetooth/hci_h5.c
>>>>>> @@ -906,10 +906,7 @@ static int h5_btrtl_setup(struct h5 *h5)
>>>>>> /* Give the device some time before the hci-core sends it a reset */
>>>>>> usleep_range(10000, 20000);
>>>>>>
>>>>>> - /* Enable controller to do both LE scan and BR/EDR inquiry
>>>>>> - * simultaneously.
>>>>>> - */
>>>>>> - set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &h5->hu->hdev->quirks);
>>>>>> + btrtl_set_quirks(h5->hu->hdev, btrtl_dev);
>>>>>
>>>>> any reason why not just setting WBS quirk here?
>>>>
>>>> Hmm, I think WBS is the feature of the chipset and not the transport.
>>>> Therefore isn't it better to just have it set in one place?
>>>> Setting the quirks here means we need to copy paste the settings from btrtl.c.
>>>
>>> but since you are already setting HCI_QUIRK_SIMULTANEOUS_DISCOVERY right now, I don’t see the difference.
>>
>> Sorry, I don't get what you mean.
>> With this patch I also moved HCI_QUIRK_SIMULTANEOUS_DISCOVERY into
>> btrtl.c, so it's together with the WBS quirk.
>>
>>> Can we actually verify that we still need the WBS quirk. I think we fixed the broken errerrnous packet flag handling.
>>
>> To be honest, I am not aware about the story of the broken erroneous
>> packet flag.
>> Last time I checked I still needed the quirk to have RTL8822 on UART
>> properly run WBS, but that was months ago...
>> Let me verify whether this quirk is still needed.
>
> It looks like we still need the WBS quirk because otherwise the host
> wouldn't know whether the controller supports WBS or not. It's used in
> get_supported_settings() in mgmt.c.
and why not set it unconditionally for all Realtek chips?
Regards
Marcel
