Re: [radeonhd] [RFH] Add HDMI audio support

2009/7/28 Luis R. Rodriguez :

2009/7/28 Alex Deucher :

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2009/7/28 Luis R. Rodriguez :

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2009/7/26 Christian König :

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Hi,

Am Freitag, den 24.07.2009, 13:12 -0400 schrieb Luis R. Rodriguez:

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RFT - Request For Help/patch takeover

I've taken a stab at porting HDMI support from the radeonhd driver onto the radeon driver. Mind you this is my first video patch, so not sure if it was done properly. I kept telling myself I was going to finish this during my night hours but my night hours are now reserved. So if it is at least done some-what right was hoping someone could take this on themselves and complete it... The missing piece should be the generic HDMI stuff which I thought was not required but in fact is.

as far as i have read the patch you are still missing some quite essential stuff. The generic hdmi stuff is not only for the encoder/transmitter setup, but also for audio clock recovery and feeding the television with the right audio parameters (sampling rate, bit per sampel etc.).

Yeah, that stuff is missing.

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I always wondered when somebody starts to port this over to radeon. I considered doing it myself, but as far as i know the radeon driver it's relying complete on atombios to do the tmdsa and lvtma transmitter setup, and at least for hdmi support that's bad.

Interesting..

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I fought quite allot with radeonhd to get atombios+hdmi support running at the same time, for RV630 i reverted to move setting a missing bit with the TMDSA and LVTMA control register to the hdmi enabling function, but i couldn't find a good solution for my RS780 (with DIG interface).

Maybe i am just not feeding the right values to atombios so it can set the registers right, but since even fglrx revert to programming the registers directly i assume that atombios is simply not capable of doing this.

So radeonhd HDMI stuff really may only work for some cards?

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Beside from that i don't have time to support another implementation of this stuff, so i am sorry but at least i can't take it over.

No problem, I appreciate the feedback. If I ever really get the urge to use my HDMI cable I guess I will finish this.

Problem is, if the way radeonhd is doing it is not the good way (through atombios), do we have documentation to do it the right way?

We plan to look at the info for a possible documentation or code release at some point, but we haven't had the time to compile and review it yet.

So if I do have time to finish the port, is that worth it? Or is that time not spent well at this point?

Depends how quickly you want support. I'm not sure when or what we'll be able to release yet. Alex -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org