On Thu, Apr 19, 2012 at 6:35 PM, Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx> wrote: > Before posting the next round of patches I wanted to clarify whether we need > to take the Tegra driver through staging. Lucas brought this up referring to > previous experience with Nouveau where Linus used to complain that userspace > ABI was broken for non-staging drivers. I don't know how relevant that is > for Tegra. We could also keep it in drivers/gpu/drm and only add userspace > interfaces that we are sure are not going to change. Currently there isn't > isn't anything that could be easily broken as only some of the standard DRM > interfaces are supported anyway. > > Alternatively we could keep the driver in a separate tree until it becomes > mature enough. > > Any thoughts? It's probably okay to avoid staging if it doesn't add any userspace ioctls. A KMS driver that just supports the dumb ioctls so -modesetting works, would be the first thing to aim for I suppose, like how the exynos guys did it. Adding userspace interfaces is where you'll get into ABI guarantees etc, and these are normally required only for the accel engines. Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
