On Wed, 2012-08-01 at 11:53 -0500, Rob Clark wrote: > Ok.. this would help. I'll take a look. I do request that > interfaces/panels don't set any mgr/timing related registers. I had > to comment all this stuff out in my prototype. Really we want to set > the timings separately on the crtc (mgr) / encoder (interface) / > connector (panel.. not sure if it is needed, though?). KMS will take > care of propagating the timings through the pipeline. If we only had auto-update displays, and only the video timings were shadow register, it'd work. Unfortunately we have other registers as shadow registers also, like DISPC_CONTROL1, DISPC_CONFIG1 and DISPC_DIVISOR1. But we should think if this could be somehow be changed, so that all the shadow register info would come from one place. I do find it a bit unlikely with a quick thought, though. Well, hmm. Perhaps... Omapdrm (or omapfb etc) doesn't really need to know about the values of those registers, it just needs to control the GO bit. So perhaps if we had some method to inform omapdrm that these things have changed, and omapdrm would then set the GO bit as soon as possible. But there are some tricky stuff, like the divisors... Well, we need to think about this. Tomi
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