Re: [PATCH 0/2] Introduce Poly/Plantronics mute event support

[Takashi Iwai <tiwai@suse.de>]

On Wed, 04 Dec 2024 06:23:30 +0100,
Terry Junge wrote:
> 
> On 12/2/24 11:32 PM, Takashi Iwai wrote:
> > On Mon, 02 Dec 2024 23:35:51 +0100,
> > Terry Junge wrote:
> >>
> >> On 11/25/24 12:55 AM, Takashi Iwai wrote:
> >>> On Sun, 24 Nov 2024 21:32:39 +0100,
> >>> Terry Junge wrote:
> >>>>
> >>>> Hi Jiri and Takashi,
> >>>>
> >>>> I'm not sure how it works with two different maintained trees
> >>>> but this patch set needs to be applied and flow upstream together.
> >>>>
> >>>> If the HID patch is applied without the ALSA patch then mute sync
> >>>> issues will occur with multiple Poly/Plantronics product families.
> >>>
> >>> Both patches can be applied individually, and even if only one of them
> >>> is applied, it won't hurt.  So I guess both subsystems can take the
> >>> corresponding one at any time.
> >>>
> >>
> >> Hi Takashi,
> >>
> >> I've tested out the behavior with each patch individually applied and
> >> have found that, IMHO, the mute functionality and synchronization is
> >> worse than the current behavior with neither patch. However, with both
> >> patches applied the mixer UI microphone mute control and the headset
> >> mute button are fully synchronized.
> > 
> > That's odd.  How can it worsen?  As far as I understand from the patch
> > descriptions, the USB-audio patch corrects only the mixer volume
> > control names, while the HID patch changes the quirk to be generalized
> > (to be dropped the next key in a short period).  If only USB audio
> > patch is applied, it doesn't matter as the volume binding didn't
> > happen before the patch.  OTOH, ditto, if only HID patch is applied.
> > Am I missing anything here?
> 
> The USB-audio patch also corrects the names for the mixer switch controls.
> The HID patch also adds mapping of the mute button to the KEY_MICMUTE event.
> It's not the playback volume handling that gets worse, it's the capture
> switch handling that gets worse.

That's what I don't understand -- how can it get worse?  The key
binding didn't work beforehand, no?  Now HID patch handles the
mic-mute key event, but what can it *break* without USB-audio patch?

> The USB-audio patch allows the mixer to bind to the headset's mute control in
> the feature unit and mute/un-mute the headset microphone while the HID patch
> allows the headset to request the mixer to toggle the microphone mute state.
> 
> Both patches are needed for microphone mute synchronization to work.

Sure, but the question is what becomes *worse* by one of them.


thanks,

Takashi

> 
> thanks,
> 
> Terry
> 
> > 
> >> There must be a way that both patches can be tied together and be
> >> applied simultaneously.
> >>
> >> If it would help, and be allowed, I can submit a single patch that
> >> contains both changes.
> > 
> > Applying both from the single tree is possible, sure.  One of two
> > needs an ack from the subsystem maintainers.
> > 
> > 
> > thanks,
> > 
> > Takashi
> > 
> >>
> >> Thanks,
> >> Terry
> >>
> >>>
> >>> thanks,
> >>>
> >>> Takashi
> >>>
> >>>>
> >>>> This patch set was tested by Wade and myself with multiple
> >>>> Poly/Plantronics product family headsets.
> >>>>
> >>>> Hi Wade,
> >>>>
> >>>> Please feel free to add your Signed-off-by: and/or Tested-by: tags,
> >>>> as you see fit.
> >>>>
> >>>> Thanks,
> >>>> Terry
> >>>>
> >>>> Terry Junge (2):
> >>>>   HID: hid-plantronics: Add mic mute mapping and generalize quirks
> >>>>   ALSA: usb-audio: Add quirk for Plantronics headsets to fix control
> >>>>     names
> >>>>
> >>>>  drivers/hid/hid-plantronics.c | 135 ++++++++++++++++------------------
> >>>>  sound/usb/mixer_quirks.c      |  35 +++++++++
> >>>>  2 files changed, 100 insertions(+), 70 deletions(-)
> >>>>
> >>>>
> >>>> base-commit: 28eb75e178d389d325f1666e422bc13bbbb9804c
> >>>> -- 
> >>>> 2.43.0
> >>>>
> >>
>