drm/i915/dg1: Apply WA 1409120013 and 14011059788

DG1 is missing those two WA so instead of copy and paste it to the DG1
function, here calling the function that implements it.

While at it also renaming tgl_init_clock_gating to
gen12lp_init_clock_gating as it is also used by DG1, RKL and ADL-S.

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210113133759.72055-1-jose.souza@intel.com

drivers/gpu/drm/i915/intel_pm.c

@@ -7103,24 +7103,26 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
 			 0, CNL_DELAY_PMRSP);
 }
 
-static void tgl_init_clock_gating(struct drm_i915_private *dev_priv)
+static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
 {
-	/* Wa_1409120013:tgl */
+	/* Wa_1409120013:tgl,rkl,adl_s,dg1 */
 	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN,
-		   ILK_DPFC_CHICKEN_COMP_DUMMY_PIXEL);
+			   ILK_DPFC_CHICKEN_COMP_DUMMY_PIXEL);
 
 	/* Wa_1409825376:tgl (pre-prod)*/
 	if (IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B1))
 		intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
 			   TGL_VRH_GATING_DIS);
 
-	/* Wa_14011059788:tgl */
+	/* Wa_14011059788:tgl,rkl,adl_s,dg1 */
 	intel_uncore_rmw(&dev_priv->uncore, GEN10_DFR_RATIO_EN_AND_CHICKEN,
 			 0, DFR_DISABLE);
 }
 
 static void dg1_init_clock_gating(struct drm_i915_private *dev_priv)
 {
+	gen12lp_init_clock_gating(dev_priv);
+
 	/* Wa_1409836686:dg1[a0] */
 	if (IS_DG1_REVID(dev_priv, DG1_REVID_A0, DG1_REVID_A0))
 		intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
@@ -7583,7 +7585,7 @@ void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
 	if (IS_DG1(dev_priv))
 		dev_priv->display.init_clock_gating = dg1_init_clock_gating;
 	else if (IS_GEN(dev_priv, 12))
-		dev_priv->display.init_clock_gating = tgl_init_clock_gating;
+		dev_priv->display.init_clock_gating = gen12lp_init_clock_gating;
 	else if (IS_GEN(dev_priv, 11))
 		dev_priv->display.init_clock_gating = icl_init_clock_gating;
 	else if (IS_CANNONLAKE(dev_priv))