[PATCH 9/9] fbc debug

[José Roberto de Souza]

---
 drivers/gpu/drm/i915/intel_fbc.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 656e684e7c9a..7e788f4dfb64 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -662,6 +662,8 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 	cache->vma = NULL;
 	cache->flags = 0;
 
+	DRM_DEBUG_KMS("intel_fbc_update_state_cache()\n");
+
 	cache->crtc.mode_flags = crtc_state->base.adjusted_mode.flags;
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
 		cache->crtc.hsw_bdw_pixel_rate = crtc_state->pixel_rate;
@@ -681,16 +683,21 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 
 	cache->plane.pixel_blend_mode = plane_state->base.pixel_blend_mode;
 
-	if (!cache->plane.visible)
+	if (!cache->plane.visible) {
+		DRM_DEBUG_KMS("\t!cache->plane.visible\n");
 		return;
+	}
 
 	cache->fb.format = fb->format;
 	cache->fb.stride = fb->pitches[0];
 
 	cache->vma = plane_state->vma;
 	cache->flags = plane_state->flags;
-	if (WARN_ON(cache->flags & PLANE_HAS_FENCE && !cache->vma->fence))
+	if (WARN_ON(cache->flags & PLANE_HAS_FENCE && !cache->vma->fence)) {
+		DRM_DEBUG_KMS("\t&= ~PLANE_HAS_FENCEu\n");
 		cache->flags &= ~PLANE_HAS_FENCE;
+	}
+	DRM_DEBUG_KMS("\tcache->flags=%lu\n", cache->flags);
 }
 
 static bool intel_fbc_can_activate(struct intel_crtc *crtc)
@@ -726,13 +733,13 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
 	 * by the CPU to the scanout and trigger updates to the FBC.
 	 *
 	 * Note that is possible for a tiled surface to be unmappable (and
-	 * so have no fence associated with it) due to aperture constaints
+	 * so have no fence associated with it) due to aperture constraints
 	 * at the time of pinning.
 	 *
 	 * FIXME with 90/270 degree rotation we should use the fence on
 	 * the normal GTT view (the rotated view doesn't even have a
 	 * fence). Would need changes to the FBC fence Y offset as well.
-	 * For now this will effecively disable FBC with 90/270 degree
+	 * For now this will effectively disable FBC with 90/270 degree
 	 * rotation.
 	 */
 	if (!(cache->flags & PLANE_HAS_FENCE)) {
-- 
2.20.1