Re: [PATCH] ALSA: usb-audio: Apply sample rate quirk to Logitech Connect

[Dmitry Panchenko | d-Systems <dmitry@d-systems.ee>]

Dear list administrator,

please remove dmitry@d-systems.ee from this list.

Kind regards,
Dmitry Panchenko

d-Systems OÜ
Ⓐ Lai 6, Tartu 51005, Estonia
Ⓦ www.d-systems.ee <http://www.d-systems.ee>

On 24.03.21 14:03, Ikjoon Jang wrote:
>
>
> On Wed, Mar 24, 2021, 7:16 PM Joakim Tjernlund 
> <Joakim.Tjernlund@infinera.com <mailto:Joakim.Tjernlund@infinera.com>> 
> wrote:
>
>     On Wed, 2021-03-24 at 18:51 +0800, Ikjoon Jang wrote:
>     > Logitech ConferenceCam Connect is a compound USB device with UVC and
>     > UAC. Not 100% reproducible but sometimes it keeps responding
>     STALL to
>     > every control transfer once it receives get_freq request.
>     >
>     > This patch adds 046d:0x084c to a snd_usb_get_sample_rate_quirk list.
>     >
>     > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203419
>     > Signed-off-by: Ikjoon Jang <ikjn@chromium.org
>     <mailto:ikjn@chromium.org>>
>
>     Most Logitech USB headset I got needs a delay in
>     snd_usb_ctl_msg_quirk()
>     Have you tried to add say 20 ms delay in there?
>
>
> I didn't try that. But it sounds reasonable to me.
>
> let me try that quirk here. If that is the case, HID might need that 
> delay also. Logitech Group webcam had a similar problem on control 
> xfer of get_report from an another interface for HID.
>
> And 20ms can be too long if it's applied to every control transfer. I 
> will test the device with shorter delay if you didn't try it before.
>
> Any additional advice is welcome.
>
> Thanks!
>
>      Jocke
>