drm/i915: Simplify hdmi_12bpc_possible()

With the output_types bitmask there's no need to loop through
the encoders anymore when checking for HDMI+non-HDMI cloning.

v2: Use output_types bitmask
v3: Fix the logic to really check that there are no non-HDMI encoders

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> (v2)
Link: http://patchwork.freedesktop.org/patch/msgid/1466621833-5054-11-git-send-email-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index e942442..4df9f38 100644 (file)
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1273,33 +1273,15 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
 static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
 {
        struct drm_device *dev = crtc_state->base.crtc->dev;
-       struct drm_atomic_state *state;
-       struct intel_encoder *encoder;
-       struct drm_connector *connector;
-       struct drm_connector_state *connector_state;
-       int count = 0, count_hdmi = 0;
-       int i;
 
        if (HAS_GMCH_DISPLAY(dev))
                return false;
 
-       state = crtc_state->base.state;
-
-       for_each_connector_in_state(state, connector, connector_state, i) {
-               if (connector_state->crtc != crtc_state->base.crtc)
-                       continue;
-
-               encoder = to_intel_encoder(connector_state->best_encoder);
-
-               count_hdmi += encoder->type == INTEL_OUTPUT_HDMI;
-               count++;
-       }
-
        /*
         * HDMI 12bpc affects the clocks, so it's only possible
         * when not cloning with other encoder types.
         */
-       return count_hdmi > 0 && count_hdmi == count;
+       return crtc_state->output_types == 1 << INTEL_OUTPUT_HDMI;
 }
 
 bool intel_hdmi_compute_config(struct intel_encoder *encoder,