drm/i915: Add enabledisable()

'enable ? "enable" : "disable"' is a fairly common pattern in
our debug prints. Let's introduce a helper for it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210416171011.19012-8-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -2334,8 +2334,8 @@ static void intel_dp_sink_set_msa_timing_par_ignore_state(struct intel_dp *intel
 	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_DOWNSPREAD_CTRL,
 			       enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0) <= 0)
 		drm_dbg_kms(&i915->drm,
-			    "Failed to set MSA_TIMING_PAR_IGNORE %s in the sink\n",
-			    enable ? "enable" : "disable");
+			    "Failed to %s MSA_TIMING_PAR_IGNORE in the sink\n",
+			    enabledisable(enable));
 }
 
 static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,

drivers/gpu/drm/i915/display/intel_display_power.c

@@ -4766,7 +4766,7 @@ static void gen9_dbuf_slice_set(struct drm_i915_private *dev_priv,
 	state = intel_de_read(dev_priv, reg) & DBUF_POWER_STATE;
 	drm_WARN(&dev_priv->drm, enable != state,
 		 "DBuf slice %d power %s timeout!\n",
-		 slice, enable ? "enable" : "disable");
+		 slice, enabledisable(enable));
 }
 
 void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,

drivers/gpu/drm/i915/display/intel_dp.c

@@ -1861,7 +1861,7 @@ void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
 	if (ret < 0)
 		drm_dbg_kms(&i915->drm,
 			    "Failed to %s sink decompression state\n",
-			    enable ? "enable" : "disable");
+			    enabledisable(enable));
 }
 
 static void

drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c

@@ -291,7 +291,7 @@ static void set_vesa_backlight_enable(struct intel_dp *intel_dp, bool enable)
 	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_EDP_DISPLAY_CONTROL_REGISTER,
 			       reg_val) != 1) {
 		drm_dbg_kms(&i915->drm, "Failed to %s aux backlight\n",
-			    enable ? "enable" : "disable");
+			    enabledisable(enable));
 	}
 }
 

drivers/gpu/drm/i915/i915_utils.h

@@ -418,6 +418,11 @@ static inline const char *onoff(bool v)
 	return v ? "on" : "off";
 }
 
+static inline const char *enabledisable(bool v)
+{
+	return v ? "enable" : "disable";
+}
+
 static inline const char *enableddisabled(bool v)
 {
 	return v ? "enabled" : "disabled";