USB Audio volume quirks

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HelloI would like to report two cards which work with the snd_usb_audiodriver except for volume adjustment. Both are cheap and small cardsthat fit in a pendrive form factor. I used alsamixer to test thevolume settings.04f3:0a11 Elan Microelectronics Corp. - low volume settings are verycoarse (no difference in 0-20% and 20-30% ranges, gets better athigher volumes)1130:f211 Tenx Technology, Inc. - volume jumps between mute and veryloud when changing master volume from 6% to 7%, and doesn't respond toany other changes in volume.
The second card seems to contain the TMU6102 chip - there is aregister mapping available athttp://www.tenx.com.tw/Files/Doc/288/DS-TMU6102_V10.pdf and featuresummary says that it supports "64 volume levels". It works withoutproblems with the USB audio drivers included in Windows XP.Unfortunately, I don't have it right now. I have no idea about thesecond, the numbers on the chip don't match anything in Elandatasheets.
Is there anything than can be done about the volume problems, perhapsby adding something to usbquirks.h?
Regards, Krzysztof Kosiński.��.n��������+%������w��{.n�����{���)��jg��������ݢj����G�������j:+v���w�m������w�������h�����٥


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