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Re: 答复: 答复: [Gnewsense-dev] Re: gNewS ense-MIPS and SiliconMotion video

From: yanhua
Subject: Re: 答复: 答复: [Gnewsense-dev] Re: gNewS ense-MIPS and SiliconMotion video driver
Date: Mon, 08 Mar 2010 09:42:28 +0800
User-agent: Mozilla-Thunderbird (X11/20090706)

   We can test it. please give us the new sm712 driver.
Teddy Wang 写道:
    Now our new SM502 and SM712 driver can support latest XServer. But the
new SM712 driver doesn't test in the loongson platform.  The new SM502
Xserver driver you used in the AIO platform also can support latest Xserver.

发件人: zhangfx [mailto:address@hidden] 
发送时间: 2010年3月5日 8:55
收件人: Teddy Wang
抄送: 'yanhua'; 'Daniel Clark'; 'chenj'; '崔春波'; address@hidden;
'Bernie Innocenti'
主题: Re: 答复: [Gnewsense-dev] Re: gNewSense-MIPS and SiliconMotion video

It seems that people are complaining that the performance is much worse 
than current one.

Teddy Wang wrote:
Hi, yanhua,

 Now the Siliconmotion driver in freedesktop port can support higher X
server. It can support SM712 and SM502. You can refer to

Best Regards,
Teddy Wang 王力强
Silicon Motion, Inc. (China)
Tel: 86 21 65107780 ext.7162
Mobile: 86 13817794114
发件人: yanhua [mailto:address@hidden] 
发送时间: 2010年3月4日 17:30
收件人: Daniel Clark; Teddy Wang; chenj; 崔春波
抄送: address@hidden; Bernie Innocenti; zhangfx
主题: Re: [Gnewsense-dev] Re: gNewSense-MIPS and SiliconMotion video
We only test yeeloong siliconmotion driver for sm712 in x server 1.4.2. 
some work is  needed to  make higher x server work properly.

High Teddy:
     We need to port siliconmotion  x driver to higher x server, the 
best is the newest x server.  Could you please help to do this work?

Daniel Clark 写道:
On 02/28/2010 11:24 PM, Octavio Rossell wrote:
We need to recompile the Silicon Motion Driver into the gNewSense Lemote
Yeelong. There is an existing effort in this [1] but the package appears
to crash or to not work properly in some reeboot situation.
There are actually several projects / hacks to get X working better in 
various ways on the yeeloong. I believe all of them suffer from 
various problems, and most are dead ends (code that would never be 
accepted against upstream and/or against really old versions of X).

Bernie has a pretty comprehensive overview of the situation as it was 
a month or two ago posted somewhere; I'll try to gather all the 
mailing list posts about and put summaries/references to them on a 
wiki page somewhere if you tell me you would find that to be useful.

The most recent effort I've seen has code (patch file) and discussion 

Or here if that URL is broken:

Any help, advice or information will be helpful.

(a) Check mailing list archives, monitor and keep up to date at least 
this mailing list, loongson-dev, #gnewsense-dev irc. Email 
address@hidden and ask for access to address@hidden and its archives.

(b) Get on the proper xorg lists / channels.

(c) If you don't have commit access to xorg version control, be sure 
to form a relationship with someone who does, and is willing to help 
you get your changes in. Ditto for the upstream Debian packages, 
unless you have resources to maintain seperate gNS-specific packages 
until the end of time, and kk is cool with that.

(d) Make sure any development happens in a publicly available version 
control repository. Tell at least this list and loongson-dev where 
that is once anything at all useful is there.

(e) Keep in mind that the goal is to be included in upstream xorg; 
avoid quick hacks that will never be accepted upstream.

(f) If the people working on this on your end are not good at English, 
see if you can get someone who is to translate the available doc / 
list threads to them and vice versa.

(g) You may also want to follow Zhang Le's Gentoo work, it seems to be 
the most advanced loongson2f-optimized GNU/Linux distribution at the 
moment (i.e. it's actually all compiled with proper mipsel abi, 
loongson2f optimization, loongson2f bug workarounds). Also 
collaborating with people working on OpenBSD/Loongson may be useful; 
we may disagree politically at times, but we use the same upstream 
xorg code.

(h) You are probably more likely to get technical help regarding the 
work on loongson-dev or xorg lists.

(i) Some low level info on the SM hardware is at

(j) If you need to speed up compiles bug me on #gnewsense-dev - I'm 
close to having an icecc setup done, and should have 10 more 2f boxes 
to add to the existing 4 in the farm Monday.

Happy Hacking,



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