On Thu, May 24, 2012 at 7:13 AM, Tomi Valkeinen <tomi.valkeinen@xxxxxx> 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? Andy -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
