drm/i915/display: Add HDR mode helper function

Add helper function with returns if HDR mode in on
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210907113658.1351456-1-tejaskumarx.surendrakumar.upadhyay@intel.com
[vsyrjala: fix up alignment to match codingstyle]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

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

@@ -183,6 +183,12 @@ static void intel_update_czclk(struct drm_i915_private *dev_priv)
 		dev_priv->czclk_freq);
 }
 
+static bool is_hdr_mode(const struct intel_crtc_state *crtc_state)
+{
+	return (crtc_state->active_planes &
+		~(icl_hdr_plane_mask() | BIT(PLANE_CURSOR))) == 0;
+}
+
 /* WA Display #0827: Gen9:all */
 static void
 skl_wa_827(struct drm_i915_private *dev_priv, enum pipe pipe, bool enable)
@@ -5258,9 +5264,7 @@ static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)
 		val |= PIPEMISC_YUV420_ENABLE |
 			PIPEMISC_YUV420_MODE_FULL_BLEND;
 
-	if (DISPLAY_VER(dev_priv) >= 11 &&
-	    (crtc_state->active_planes & ~(icl_hdr_plane_mask() |
-					   BIT(PLANE_CURSOR))) == 0)
+	if (DISPLAY_VER(dev_priv) >= 11 && is_hdr_mode(crtc_state))
 		val |= PIPEMISC_HDR_MODE_PRECISION;
 
 	if (DISPLAY_VER(dev_priv) >= 12)