[Intel-gfx] [PATCH 04/18] drm/i915: extract crtc_is_valid() on the FBC code

[Paulo Zanoni]

We're going to kill intel_fbc_find_crtc(), that's why a big part of
the logic moved from intel_fbc_find_crtc() to crtc_is_valid().

Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
 drivers/gpu/drm/i915/intel_fbc.c | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index b9cfd16..1162787 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -538,27 +538,33 @@ static void set_no_fbc_reason(struct drm_i915_private *dev_priv,
 	DRM_DEBUG_KMS("Disabling FBC: %s\n", reason);
 }
 
+static bool crtc_is_valid(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+	enum pipe pipe = crtc->pipe;
+
+	if ((IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8) &&
+	    pipe != PIPE_A)
+		return false;
+
+	return intel_crtc_active(&crtc->base) &&
+	       to_intel_plane_state(crtc->base.primary->state)->visible &&
+	       crtc->base.primary->fb != NULL;
+}
+
 static struct drm_crtc *intel_fbc_find_crtc(struct drm_i915_private *dev_priv)
 {
 	struct drm_crtc *crtc = NULL, *tmp_crtc;
 	enum pipe pipe;
-	bool pipe_a_only = false;
-
-	if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)
-		pipe_a_only = true;
 
 	for_each_pipe(dev_priv, pipe) {
 		tmp_crtc = dev_priv->pipe_to_crtc_mapping[pipe];
 
-		if (intel_crtc_active(tmp_crtc) &&
-		    to_intel_plane_state(tmp_crtc->primary->state)->visible)
+		if (crtc_is_valid(to_intel_crtc(tmp_crtc)))
 			crtc = tmp_crtc;
-
-		if (pipe_a_only)
-			break;
 	}
 
-	if (!crtc || crtc->primary->fb == NULL)
+	if (!crtc)
 		return NULL;
 
 	return crtc;
-- 
2.6.1