[PATCH 1/2] debug

[José Roberto de Souza]

---
 drivers/gpu/drm/i915/display/intel_display.c |  2 ++
 drivers/gpu/drm/i915/display/intel_fbc.c     | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index c0e5002ce64c..6045c9203030 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -15042,6 +15042,8 @@ static void intel_update_crtc(struct intel_crtc *crtc,
 	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
 	bool modeset = needs_modeset(new_crtc_state);
 
+	DRM_DEBUG_KMS("intel_update_crtc() crtc%c modeset=%i | fbc\n", pipe_name(crtc->pipe), modeset);
+
 	if (modeset) {
 		intel_crtc_update_active_timings(new_crtc_state);
 
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index ab676c6756af..920cc5d77a9a 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -365,6 +365,8 @@ static void intel_fbc_hw_activate(struct drm_i915_private *dev_priv)
 	trace_intel_fbc_activate(fbc->crtc);
 
 	fbc->active = true;
+	DRM_DEBUG_KMS("intel_fbc_hw_activate pipe=%c\n", pipe_name(fbc->crtc->pipe));
+	//dump_stack();
 	fbc->activated = true;
 
 	if (INTEL_GEN(dev_priv) >= 7)
@@ -384,6 +386,8 @@ static void intel_fbc_hw_deactivate(struct drm_i915_private *dev_priv)
 	trace_intel_fbc_deactivate(fbc->crtc);
 
 	fbc->active = false;
+	DRM_DEBUG_KMS("intel_fbc_hw_deactivate pipe=%c\n", pipe_name(fbc->crtc->pipe));
+	//dump_stack();
 
 	if (INTEL_GEN(dev_priv) >= 5)
 		ilk_fbc_deactivate(dev_priv);
@@ -1096,9 +1100,14 @@ void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
 		if (!plane->has_fbc)
 			continue;
 
+		if (!crtc)
+			DRM_DEBUG_KMS("plane%c pipe%c with NULL crtc\n", plane_name(plane->id), pipe_name(plane->pipe));
+
 		if (!plane_state->uapi.visible)
 			continue;
 
+		DRM_DEBUG_KMS("plane%c from pipe%c has_fbc\n", plane_name(plane->id), pipe_name(crtc->pipe));
+
 		crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
 
 		crtc_state->enable_fbc = true;
@@ -1177,6 +1186,9 @@ void intel_fbc_enable(struct intel_atomic_state *state,
 	fbc->crtc = crtc;
 out:
 	mutex_unlock(&fbc->lock);
+
+	DRM_DEBUG_KMS("intel_fbc_enable() crtc%c fbc->crtc%c\n", pipe_name(crtc->pipe), fbc->crtc ? pipe_name(fbc->crtc->pipe) : 'i');
+	//dump_stack();
 }
 
 /**
@@ -1194,6 +1206,8 @@ void intel_fbc_disable(struct intel_crtc *crtc)
 	if (!plane->has_fbc)
 		return;
 
+	DRM_DEBUG_KMS("intel_fbc_disable() crtc%c\n", pipe_name(crtc->pipe));
+
 	mutex_lock(&fbc->lock);
 	if (fbc->crtc == crtc)
 		__intel_fbc_disable(dev_priv);
-- 
2.25.0