From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailrelay010.isp.belgacom.be (mailrelay010.isp.belgacom.be [195.238.6.177]) by ozlabs.org (Postfix) with ESMTP id 61A4FDE0E9 for ; Fri, 11 Apr 2008 17:29:37 +1000 (EST) Message-ID: <47FF135E.2060003@246tnt.com> Date: Fri, 11 Apr 2008 09:29:34 +0200 From: Sylvain Munaut MIME-Version: 1.0 To: Marian Balakowicz Subject: Re: State of the MPC5200 PSC AC97 driver References: <47FDEF9B.5000506@semihalf.com> In-Reply-To: <47FDEF9B.5000506@semihalf.com> Content-Type: text/plain; charset=ISO-8859-2 Cc: spitzauer_77@gmx.de, linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , > 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