Virtuous blogs jbarnes' braindump

07/04/08

English (US)   a bit of history  -  Categories: Background  -  @ 08:09:17 pm

In order to start things off on the right foot, so to speak (i.e. start out with real content), I figured it might be nice to cover some recent history.

Things have been fairly busy on the Intel graphics front these days; Keith & Eric (or should I say Eric & Keith) have been hard at work getting the new GEM infrastructure in shape. They put together the new framework remarkably quickly; most of the delays recently are due to communication with the hardware guys about various issues, since GEM pushes the limits of our chipsets in a few different ways.

For my own part, it seems like I’ve been spending a lot of time looking at VBIOS tables these days. Over the past few of weeks I’ve added support to the DRM for TV output detection & LFP timings based on the Intel VBTs, and lately I’ve been working to add the same TV output detection plus spread spectrum support to the xf86-video-intel driver. Things are looking good on the SSC front so far: no reports of failure yet and at least one group is using the new patch to avoid audio noise inducing EMI. Hopefully I’ll be able to push it upstream next week. I’ve also got fixes for framebuffer compression and better memory arbitration queued up (well, mostly in my head at this point) that I’ll try to get into the 2.4 release, but since I’ll be out in Folsom at an Intel conference most of next week, that might be tricky.

On the 3D front, I’ve got some fixes for page flipping and buffer swapping on 965 put together; they need more testing (and the DRM vblank code needs more fixing on i915), but I’m hoping to have that together soon. Defaulting to vblank sync’d buffer swaps makes a lot of sense, but only if the underlying vblank code is solid.

PCI in Linux has been pretty busy these days too, more so than I thought it would be. Linus just pulled a few crash fixes for 2.6.26 recently, and the 2.6.27 queue is getting pretty full (TODO: post “what’s in pci linux-next” for everyone). Things are looking good though: VPDs are supported on older cards now, hotplug is getting a lot of attention, and we’ve got some shiny, new early debug code courtesy of Yinghai Lu, our resident coding machine. Oh and I almost forgot all the suspend/resume stuff… Rafael, our highly prolific suspend/resume maintainer, has posted several patchsets that really improve our suspend/resume callback architecture, and fixed up the platform wakeup design while he was at it.

Overall, things are busy as usual, but that’s how it ought to be.

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