drm/i915: add MISSING_CASE to a few port/aux power domain helpers

MISSING_CASE() would have been useful to track down a recent problem in
intel_display_port_aux_power_domain(), so add it there and a few related
helpers. This was also suggested by Ville in his review of the latest
DMC/DC changes, we forgot to address that.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued b9fec167 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-5-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ea03006cc08e..22e86d2e408d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5194,7 +5194,7 @@ static enum intel_display_power_domain port_to_power_domain(enum port port)
         case PORT_E:
                 return POWER_DOMAIN_PORT_DDI_E_2_LANES;
         default:
-                WARN_ON_ONCE(1);
+                MISSING_CASE(port);
                 return POWER_DOMAIN_PORT_OTHER;
         }
 }
@@ -5214,7 +5214,7 @@ static enum intel_display_power_domain port_to_aux_power_domain(enum port port)
                 /* FIXME: Check VBT for actual wiring of PORT E */
                 return POWER_DOMAIN_AUX_D;
         default:
-                WARN_ON_ONCE(1);
+                MISSING_CASE(port);
                 return POWER_DOMAIN_AUX_A;
         }
 }
@@ -5275,7 +5275,7 @@ intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
                 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
                 return port_to_aux_power_domain(intel_dig_port->port);
         default:
-                WARN_ON_ONCE(1);
+                MISSING_CASE(intel_encoder->type);
                 return POWER_DOMAIN_AUX_A;
         }
 }