From: Sylvain Munaut <tnt@246tnt•com>
To: Marian Balakowicz <m8@semihalf•com>
Cc: spitzauer_77@gmx•de, linuxppc-dev@ozlabs•org
Subject: Re: State of the MPC5200 PSC AC97 driver
Date: Fri, 11 Apr 2008 09:29:34 +0200 [thread overview]
Message-ID: <47FF135E.2060003@246tnt.com> (raw)
In-Reply-To: <47FDEF9B.5000506@semihalf.com>
> Last year you have posted a MPC5200 PSC AC97 driver patch
> "[PATCH 9/9] sound: Add support for Freescale MPC5200 AC97 interface."
> with the following comment:
>
>
>> Not quite a clean driver, but it get things done (well, mostly).
>> Only included to be able to test functionalityi/usage of
>> the BestComm driver.
>>
Yes ... and it still applies.
>
> There are various FIXMEs and commented out code here and there.
> Could you elaborate a bit on the overall state of the driver's
> functionality,
> which areas need improvement and attention?
>
It's a minimum boiler plate.
I filled the function at the minimum to get some sound output and being
able to hear music coming out of it :)
I also completely skipped the 5200 (not B) support ...
At first there was no DMA at all (full software copy). I added some
simple DMA later just to prove it could work and how to use the API.
I just wrote it to get some sound, prove the interface could work under
linux and to show how to use DMA. I had hoped someone else would finish
it ... (yeah, I know ... big mistake).
> Seems that you mainly tested BestComm with this driver, what was the
> overall
> BestComm performance, any issues here? Did you use any specific test setup
> involving some dedicated application, etc.?
>
My test was listening to Gorrillaz "Feel Good inc" using mplayer ...
> Did anyone else tried it and/or has a updated version or can share
> experience?
>
At the time several other people tried it and it worked ... unless you
did lots of harddrive IO and then it crumbled ...
Sylvain
next prev parent reply other threads:[~2008-04-11 7:29 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-10 10:44 State of the MPC5200 PSC AC97 driver Marian Balakowicz
2008-04-10 13:50 ` Robert Schwebel
2008-04-10 15:25 ` Matt Sealey
2008-04-11 6:51 ` Robert Schwebel
2008-04-11 7:34 ` Sven Luther
2008-04-11 7:29 ` Sylvain Munaut [this message]
2008-04-15 8:03 ` Juergen Beisert
2008-04-16 11:24 ` Juergen Beisert
2008-04-17 14:19 ` RFC: " Juergen Beisert
2008-04-17 14:23 ` Matt Sealey
2008-04-17 14:41 ` Juergen Beisert
2008-04-17 14:54 ` Matt Sealey
2008-04-17 15:05 ` Matt Sealey
2008-04-17 15:23 ` Juergen Beisert
2008-04-17 15:10 ` Matt Sealey
2008-04-17 15:23 ` Juergen Beisert
2008-04-17 15:43 ` Matt Sealey
2008-04-17 15:46 ` Sergei Shtylyov
2008-04-18 15:43 ` Peter Czanik
2008-04-18 16:02 ` Juergen Beisert
2008-04-18 18:11 ` Matt Sealey
2008-04-18 22:53 ` Grant Likely
2008-04-19 12:02 ` Matt Sealey
2008-04-19 15:59 ` Grant Likely
2008-04-21 8:02 ` Juergen Beisert
2008-04-21 17:04 ` Matt Sealey
2008-04-19 16:03 ` Grant Likely
2008-04-22 14:20 ` Olaf Hering
2008-04-11 9:23 ` State of the " Marian Balakowicz
2008-04-11 13:50 ` Grant Likely
2008-04-11 14:53 ` Marian Balakowicz
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