On Wed, Jul 01, 2015 at 05:01:52PM +0800, Mark Zhang wrote: > On 07/01/2015 04:36 PM, Daniel Vetter wrote: > > On Wed, Jul 01, 2015 at 04:21:55PM +0800, Mark Zhang wrote: > >> This HACK adds a workqueue to refresh the display periodically. > >> This is used just for testing. > > > > ->dirty is the drm hook you're looking for, it's meant to flush out any > > frontbuffer rendering. Generic kms clients using the dumb buffers (e.g. > > fedora boot splash) use this already. > > > > Oh... I did a grep in drm source and are you talking about > "drm_framebuffer_funcs->dirty"? Yeah, that should work for me.. but that > requires userspace sending IOCTL to trigger, right? Honestly I'm lazy so > I created this HACK so that I don't need userspace to test. Yeah userspace needs to send ioctl already after each drawing. Generic userspace does that already since it's required by qxl, udl, soon i915 and probably a few others too. fbdev emulation is more annyoing but there's code to move around in these drivers (qxl seems best to me as a starting point) too. Imo without this you shouldn't merge one-shot, at least not enabled by default. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch -- 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
