drm/i915/fbc: inline intel_fbc_can_choose()

It only has two checks now, so it makes sense to just move the code to
the caller.

Also take this opportunity to make no_fbc_reason make more sense: now
we'll only list "no suitable CRTC for FBC" instead of maybe giving a
reason why the last CRTC we checked was not selected, and we'll more
consistently set the reason (e.g., if no primary planes are visible).

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-5-git-send-email-paulo.r.zanoni@intel.com

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 7381011..89d5612 100644 (file)
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -876,24 +876,6 @@ static bool intel_fbc_can_enable(struct drm_i915_private *dev_priv)
        return true;
 }
 
-static bool intel_fbc_can_choose(struct intel_crtc *crtc)
-{
-       struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-       struct intel_fbc *fbc = &dev_priv->fbc;
-
-       if (fbc_on_pipe_a_only(dev_priv) && crtc->pipe != PIPE_A) {
-               fbc->no_fbc_reason = "no enabled pipes can have FBC";
-               return false;
-       }
-
-       if (fbc_on_plane_a_only(dev_priv) && crtc->plane != PLANE_A) {
-               fbc->no_fbc_reason = "no enabled planes can have FBC";
-               return false;
-       }
-
-       return true;
-}
-
 static void intel_fbc_get_reg_params(struct intel_crtc *crtc,
                                     struct intel_fbc_reg_params *params)
 {
@@ -1077,7 +1059,7 @@ void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
        struct drm_crtc_state *crtc_state;
        struct drm_plane *plane;
        struct drm_plane_state *plane_state;
-       bool fbc_crtc_present = false;
+       bool fbc_crtc_present = false, crtc_chosen = false;
        int i;
 
        mutex_lock(&fbc->lock);
@@ -1103,21 +1085,28 @@ void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
                struct intel_plane_state *intel_plane_state =
                        to_intel_plane_state(plane_state);
                struct intel_crtc_state *intel_crtc_state;
+               struct intel_crtc *crtc = to_intel_crtc(plane_state->crtc);
 
                if (!intel_plane_state->base.visible)
                        continue;
 
-               if (!intel_fbc_can_choose(to_intel_crtc(plane_state->crtc)))
+               if (fbc_on_pipe_a_only(dev_priv) && crtc->pipe != PIPE_A)
+                       continue;
+
+               if (fbc_on_plane_a_only(dev_priv) && crtc->plane != PLANE_A)
                        continue;
 
                intel_crtc_state = to_intel_crtc_state(
-                       drm_atomic_get_existing_crtc_state(state,
-                                                          plane_state->crtc));
+                       drm_atomic_get_existing_crtc_state(state, &crtc->base));
 
                intel_crtc_state->enable_fbc = true;
+               crtc_chosen = true;
                break;
        }
 
+       if (!crtc_chosen)
+               fbc->no_fbc_reason = "no suitable CRTC for FBC";
+
 out:
        mutex_unlock(&fbc->lock);
 }