Re: driver how-to?

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Hello,

On Dec 1, 2006, at 10:13, [email protected] wrote:

> On Fri, 1 Dec 2006, Zakharov Mikhail wrote:
>
>> Hi, everybody!
>>
>> I'm going to port very old Western Digital driver from Xfree86 3.3.6
>> back to 4.6.x just to start my old laptop in 640x480x256 mode. I think
>> nobody then me interested in this driver, so it's just for fun,
>> nevertheless I need some guide lines to start development, for 
>> example,
>> how-to's of writing generic driver for Xfree86, directory hierarchy 
>> and
>> so on. Can somebody turn my head to the right side?

> Would it happen to be for the WD90C24? Please? That's what's in my 
> ThinkPad 750P, and I asked about it a while back. There was one or two 
> very helpful comments that I think boiled down to these:
>
> 1. Get the new design document, read it, understand how things go.
> 2. Get your development environment set up.
> 3. Get the old source and hack away.

I'd also recommend reading the source of a relatively simple driver or 
two, candidates would be chips or tdfx ( the latter because it doesn't 
have to deal with many different variants )

And speaking of porting old drivers - I'm going to make the igs driver 
work ( hopefully ) on NetBSD/shark - has anyone worked on this in the 
past?

have fun
Michael
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