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Message-ID: <20111001173002.GB15179@nibiru.local> Date: Sat, 1 Oct 2011 19:30:02 +0200 From: Enrico Weigelt <weigelt@...ux.de> To: linux-kernel@...r.kernel.org Subject: Re: Proposal for a low-level Linux display framework * Keith Packard <keithp@...thp.com> wrote: > Jesse's design for the DRM overlay code will expose the pixel formats as > FOURCC codes so that DRM and v4l2 can interoperate -- we've got a lot of > hardware that has both video decode and 3D acceleration, so those are > going to get integrated somehow. And, we have to figure out how to share > buffers between these APIs to avoid copying data with the CPU. Really naive question: where are these buffers laying ? I guess, somewhere in the device, not in main memory (otherwise, it wouldn't be a problem, right ?). So, the question to answer is: how (of the subdevices) can see whose buffers and how to map their local addresses. Am I correct ? cu -- ---------------------------------------------------------------------- Enrico Weigelt, metux IT service -- http://www.metux.de/ phone: +49 36207 519931 email: weigelt@...ux.de mobile: +49 151 27565287 icq: 210169427 skype: nekrad666 ---------------------------------------------------------------------- Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme ---------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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