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From: kbob@jogger-egg.engr.sgi.com (Bob Miller)
To: linux-sound@vger.kernel.org
Subject: Re: Driver Writer's Questions
Date: Wed, 17 Mar 1999 14:33:42 +0000	[thread overview]
Message-ID: <marc-linux-sound-92169806011237@msgid-missing> (raw)
In-Reply-To: <marc-linux-sound-92163226831993@msgid-missing>

I asked:

> > 1. (the big question) This device requires a single DMA buffer of up
> >    to 8 Kb in main memory.  It reads/writes the buffer circularly.  It
> >    can't chain buffers.  Can I use the OSS DMA routines to set that
> >    up somehow (how?), or do I have to write a non-OSS driver?

Thomas Sailer replied:

> If the device is not ISA, I wouldn't bother fitting it into the
> OSS framework, a stand alone driver (like I did for some
> PCI cards) is easier to do and more maitainable.

Thanks a lot for answering!

> > 2. This device is capable of telling how many samples it has
> >    read/written, with an accuracy of 1 sample.  I'd like to export
> >    that via the SNDCTL_DSP_GET{I,O}PTR, ioctls, but I can't see how
> >    my driver can get control on those ioctls.

> Take a look at eg. the es1370 driver

Is the es1370 driver non-OSS, then?  Would it be a good model for
how to structure a non-OSS driver?  My device also has no synth...

					K<bob>

      parent reply	other threads:[~1999-03-17 14:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-03-16 22:57 Driver Writer's Questions Bob Miller
1999-03-17 10:38 ` Thomas Sailer
1999-03-17 14:33 ` Bob Miller [this message]

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