Re: [PATCH] Bluetooth: btmtk: add quirk to support HCI_QUIRK_SIMULTANEOUS_DISCOVERY

["Chris Lu (陸稚泓)" <Chris.Lu@mediatek.com>]

Hi Paul,

Thanks for your input,

On Fri, 2024-12-13 at 10:46 +0100, Paul Menzel wrote:
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> 
> 
> Dear Chris,
> 
> 
> Thank you for your patch.
> 
> 
> Am 13.12.24 um 10:41 schrieb Chris Lu:
> > Add quirk to support HCI_QUIRK_SIMULTANEOUS_DISCOVERY feature for
> > MT79xx
> > series chipset.
> 
> It’d be great if you elaborated. What is the problem. Why is a quirk
> needed? Is a firmware update going to fix it?

This quirk is related to do BR/EDR inquiry and LE scan simultaneously.
More detailed was described in hci.h.

Due to requirement from customer and other chip vendors also enable
HCI_QUIRK_SIMULTANEOUS_DISCOVERY, MediaTek upload this patch to enable
the feature as well. There is no need to update firmware.

> 
> > Signed-off-by: Chris Lu <chris.lu@mediatek.com>
> > ---
> >   drivers/bluetooth/btmtk.c | 3 +++
> >   1 file changed, 3 insertions(+)
> > 
> > diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
> > index 8a3f7c3fcfec..562d6ecf0b71 100644
> > --- a/drivers/bluetooth/btmtk.c
> > +++ b/drivers/bluetooth/btmtk.c
> > @@ -1367,6 +1367,9 @@ int btmtk_usb_setup(struct hci_dev *hdev)
> >                       return err;
> >               }
> > 
> > +             /* Apply common HCI quirks for MediaTek chipset */
> > +             set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev-
> > >quirks);
> > +
> 
> The commit message only talks about MT79xx series chipset. The
> comment
> talks about all MediaTek chipsets.
I'll modify commit message to avoid ambiguity and upload another
version.

Thanks a lot,
Chris Lu
> 
> >               hci_set_msft_opcode(hdev, 0xFD30);
> >               hci_set_aosp_capable(hdev);
> 
> 
> Kind regards,
> 
> Paul