From: Takashi Iwai <tiwai@suse.de>
To: cltien@cmedia.com.tw
Cc: ahessling@gmx.de, alsa-devel@lists.sourceforge.net,
alsa-user@lists.sourceforge.net
Subject: Re: CMI9780 and ALSA volume control
Date: Tue, 13 Apr 2004 19:11:08 +0200 [thread overview]
Message-ID: <s5h7jwjvm4z.wl@alsa2.suse.de> (raw)
In-Reply-To: <92C0412E07F63549B2A2F2345D3DB515F7D42E@cm-msg-02.cmedia.com.tw>
At Mon, 12 Apr 2004 11:04:55 +0800,
C.L. Tien <cltien@cmedia.com.tw> wrote:
>
> 9780 has no PCM volume control, master volume control doesn't
> control the PCM, either. This feature is the same as other C-Media
> AC97 Codecs.
>
> I once posted a patch that tune PCM volume in SW way (change PCM
> data in DMA buffer), but it was not accepted.
IMO, doing this s/w volume in the driver is not the optimal
solution. i prefer having this feature in alsa-lib.
the only drawback of implementing in alsa-lib is that the kernel OSS
emulation cannot support it, and that would surely annoy people.
Takashi
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next prev parent reply other threads:[~2004-04-13 17:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-12 3:04 CMI9780 and ALSA volume control C.L. Tien - 田承禮
2004-04-12 10:47 ` André Heßling
2004-04-12 11:46 ` Oliver Gerlich
2004-04-13 17:11 ` Takashi Iwai [this message]
2004-04-13 18:38 ` Måns Rullgård
2004-04-13 21:32 ` André Heßling
-- strict thread matches above, loose matches on Subject: below --
2004-04-11 19:23 André Heßling
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