On Thu, 2012-05-24 at 10:09 -0500, Gross, Andy wrote: > On Thu, May 24, 2012 at 7:13 AM, Tomi Valkeinen <tomi.valkei...@ti.com> wrote: > > On Thu, 2012-05-24 at 02:44 -0600, Rob Clark wrote: > > > >> but other drivers *can* use tiler, thanks to dmabuf.. I have omap4iss > >> v4l2 camera working w/ tiler buffers on my pandaboard, for example. > >> > >> Maybe fbdev is an exception to the rule because it has no way for > >> userspace to pass it a buffer to use. But on the other hand it is a > >> legacy API so I'm not sure if it is worth loosing too much sleep over > >> that. > > > > I'm not that familiar with dmabuf, but are you saying it's not possible > > for a kernel driver to request the buffers? They _must_ come from the > > userspace? > > > > Anyway, even if it would be possible, if the tiler is a part of omapdrm > > we need omapdrm to get and use the tiler buffers. And we can't have > > omapdrm running when using omapfb, because they both use omapdss. > > And that is a good point. The DSS is kind of a sticking point to anyone > having to enable DRM to get Tiler. However, omapfb doesn't currently utilize > DMM/Tiler features. Can't we defer generalizing until there is a > requirement for it?
Sure. I just brought it up because it'd be nice and it'd be better architecturally. However, as I said, I'm not familiar with the related problems, so I take your word that it's not simple =). Tomi
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