From: "Clemens Ladisch" <cladisch@fastmail.net>
To: feng_tian <feng_tian@126.com>, alsa-devel <alsa-devel@alsa-project.org>
Subject: Re: can't use dmixer
Date: Wed, 05 Dec 2007 09:30:58 +0100 [thread overview]
Message-ID: <1196843458.10919.1224896537@webmail.messagingengine.com> (raw)
In-Reply-To: <18616081.324771196835836994.JavaMail.coremail@bj126app88.126.com>
feng_tian wrote:
> I have a problem with dmix of alsa.
> I'm using alsa v1.0.11rc2 now.
It would be a good idea to update at least alsa-lib.
> And make it running on ATMEL AT91SAM9260EK board.
Which driver?
> ALSA lib pcm_direct.c:790:(snd_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access
Apparently, your driver, whichever one it is, does not support access
to its memory buffer. This would be required for dmix to work.
The current ARM drivers in the ALSA tree seem to support mmap, so I
guess your driver needs to be extended to support it, too.
Regards,
Clemens
prev parent reply other threads:[~2007-12-05 8:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-05 6:23 can't use dmixer feng_tian
2007-12-05 7:42 ` Tobin Davis
2007-12-08 8:17 ` feng_tian
2007-12-05 8:30 ` Clemens Ladisch [this message]
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