Commit 8678fdaf authored Aug 19, 2016 by Chris Wilson

drm/i915/fbc: Allow on unfenced surfaces, for recent gen



Only fbc1 is tied to using a fence. Later iterations of fbc are more
flexible and allow operation on unfenced frontbuffers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: "Zanoni, Paulo R" <paulo.r.zanoni@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160819155428.1670-3-chris@chris-wilson.co.uk

parent 12ecf4b9

drivers/gpu/drm/i915/intel_fbc.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -799,9 +799,11 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
		*/
		if (cache->fb.tiling_mode != I915_TILING_X \|\|
		cache->fb.fence_reg == I915_FENCE_REG_NONE) {
		if (INTEL_GEN(dev_priv) < 5) {
		fbc->no_fbc_reason = "framebuffer not tiled or fenced";
		return false;
		}
		}
		if (INTEL_INFO(dev_priv)->gen <= 4 && !IS_G4X(dev_priv) &&
		cache->plane.rotation != DRM_ROTATE_0) {
		fbc->no_fbc_reason = "rotation unsupported";