[Xorg-driver-geode] 答复: Plans for next releases

[Christian Gmeiner]

>> > For debug the driver, the best way it to use GDB. A graphic tool to debug
>> > the driver based on GDB is DDD. I always use this great tool to debug the
>> > driver. It can check the values of all struct and function values. It is
>> > just like debugging a application. Very powerful!
>>
>> I will find next week some time to do some testings in this area.
>>
>> > For the link you provided, I gave a look at it. He does a great job to port
>> > the Glint to KMS. Actually, right now I am porting the open source code to
>> > anoterh operating system, I have to port radeon KMS driver too. So I am very
>> > familiar with his project describes. You have seen that Alex gave Matt a lot
>> > of help when he ports the driver. So do I too right now :).
>> > I think for porint the UMS driver to KMS driver, we need to add CRTC,
>> > Encoder and Connector support. We need I2C probe to get EDID information. We
>> > need use TTM memory manager to use VRAM. We also need to port Fbdev
>> > interface. Actually for geode, it is necessary to port it into KMS. The TTM
>> > can solve a lot of memory manage work instead of the static method now. And
>> > 2D accel will be sooner if we implement in kernel instead of user space. And
>> > we can support VGA and DVI connector too in kernel. Actually I am ver
>> > interested to such a work.
>> >
>>
>> It is really a very interesting project, but how to start such a
>> porting process?
>
> Last December I spent few nights looking into it, but eventually got
> stuck @ GPU initialization routines (IE the stuff where it writes proper
> configuration to registers) and decided I better spend my time on
> something that pays my rent... ;)
>
> Anyway, here are the "stub" patches so far:
> http://plaes.org/files/2011-Q2/0001-Initial-stub-for-Geode-LX-modesetting-driver.patch
> http://plaes.org/files/2011-Q2/0002-Initial-init-for-Geode-LX-modesetting-driver.patch
>

Wonderful... this is a good starting point I think. What could also
help the development of the
KMS driver would be a public git repository...


greets,
--
Christian Gmeiner, MSc