how to quirk max capture level?

how to quirk max capture level?

[Alexey Fisher]

hallo all,
i have Logitech QuickCam E3500 ... with little issue.
Setting capture volume to more then 94% will mute this device... no 
capture will be possible. This device has same issue with windows vista. 
So best way to handle it, is usbquirks.h , but i do not know any way to 
set max level.


amixer report this device like:
=========================================
Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined
   Capture channels: Mono
   Limits: Capture 0 - 3072
   Mono: Capture 2950 [96%] [23.00dB] [on]
==========================================

here is alsa-info.sh output:
http://www.alsa-project.org/db/?f=ecd6ea8c7a37c7aa036c88026885f324ef2ab067

As you can see it report it's limits 0-3072 .. but real limit is 0-2943.

Please if any one has some idea, meail me.

Regards,
     Alexey

Re: how to quirk max capture level?

[Clemens Ladisch]

Alexey Fisher wrote:
> i have Logitech QuickCam E3500 ... with little issue.
> Setting capture volume to more then 94% will mute this device... no 
> capture will be possible. This device has same issue with windows vista. 
> So best way to handle it, is usbquirks.h , but i do not know any way to 
> set max level.

There is no predefined quirk for this; we need to code a workaround in
usbmixer.c.

Please show the output of "lsusb -v" for this device.


Best regards,
Clemens

Re: how to quirk max capture level?

[Alexey Fisher]

Clemens Ladisch schrieb:
> Alexey Fisher wrote:
>> i have Logitech QuickCam E3500 ... with little issue.
>> Setting capture volume to more then 94% will mute this device... no 
>> capture will be possible. This device has same issue with windows vista. 
>> So best way to handle it, is usbquirks.h , but i do not know any way to 
>> set max level.
> 
> There is no predefined quirk for this; we need to code a workaround in
> usbmixer.c.
> 
> Please show the output of "lsusb -v" for this device.
> 
> 
> Best regards,
> Clemens

Thank you,
i did some patch to work it around but found some other issues..
i will take closer look to it... all of my usb-sound work different on 
different usb-ports, but all other usb gadgets work with no difference 
on all ports.
one more question: should i get any sound on cval->min? seems like every 
manufacture think different about it.

Best regards,
Alexey