drm/i915/display/phys: use intel_de_rmw if possible

The helper makes the code more compact and readable.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230105131046.2173431-4-andrzej.hajda@intel.com

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

@@ -78,14 +78,11 @@ static void icl_set_procmon_ref_values(struct drm_i915_private *dev_priv,
 				       enum phy phy)
 {
 	const struct icl_procmon *procmon;
-	u32 val;
 
 	procmon = icl_get_procmon_ref_values(dev_priv, phy);
 
-	val = intel_de_read(dev_priv, ICL_PORT_COMP_DW1(phy));
-	val &= ~((0xff << 16) | 0xff);
-	val |= procmon->dw1;
-	intel_de_write(dev_priv, ICL_PORT_COMP_DW1(phy), val);
+	intel_de_rmw(dev_priv, ICL_PORT_COMP_DW1(phy),
+		     (0xff << 16) | 0xff, procmon->dw1);
 
 	intel_de_write(dev_priv, ICL_PORT_COMP_DW9(phy), procmon->dw9);
 	intel_de_write(dev_priv, ICL_PORT_COMP_DW10(phy), procmon->dw10);
@@ -267,7 +264,6 @@ void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
 				    int lane_count, bool lane_reversal)
 {
 	u8 lane_mask;
-	u32 val;
 
 	if (is_dsi) {
 		drm_WARN_ON(&dev_priv->drm, lane_reversal);
@@ -308,10 +304,8 @@ void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
 		}
 	}
 
-	val = intel_de_read(dev_priv, ICL_PORT_CL_DW10(phy));
-	val &= ~PWR_DOWN_LN_MASK;
-	val |= lane_mask;
-	intel_de_write(dev_priv, ICL_PORT_CL_DW10(phy), val);
+	intel_de_rmw(dev_priv, ICL_PORT_CL_DW10(phy),
+		     PWR_DOWN_LN_MASK, lane_mask);
 }
 
 static void icl_combo_phys_init(struct drm_i915_private *dev_priv)
@@ -366,19 +360,13 @@ static void icl_combo_phys_init(struct drm_i915_private *dev_priv)
 
 		icl_set_procmon_ref_values(dev_priv, phy);
 
-		if (phy_is_master(dev_priv, phy)) {
-			val = intel_de_read(dev_priv, ICL_PORT_COMP_DW8(phy));
-			val |= IREFGEN;
-			intel_de_write(dev_priv, ICL_PORT_COMP_DW8(phy), val);
-		}
-
-		val = intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy));
-		val |= COMP_INIT;
-		intel_de_write(dev_priv, ICL_PORT_COMP_DW0(phy), val);
+		if (phy_is_master(dev_priv, phy))
+			intel_de_rmw(dev_priv, ICL_PORT_COMP_DW8(phy),
+				     0, IREFGEN);
 
-		val = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
-		val |= CL_POWER_DOWN_ENABLE;
-		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), val);
+		intel_de_rmw(dev_priv, ICL_PORT_COMP_DW0(phy), 0, COMP_INIT);
+		intel_de_rmw(dev_priv, ICL_PORT_CL_DW5(phy),
+			     0, CL_POWER_DOWN_ENABLE);
 	}
 }
 
@@ -387,8 +375,6 @@ static void icl_combo_phys_uninit(struct drm_i915_private *dev_priv)
 	enum phy phy;
 
 	for_each_combo_phy_reverse(dev_priv, phy) {
-		u32 val;
-
 		if (phy == PHY_A &&
 		    !icl_combo_phy_verify_state(dev_priv, phy)) {
 			if (IS_TIGERLAKE(dev_priv) || IS_DG1(dev_priv)) {
@@ -410,14 +396,11 @@ static void icl_combo_phys_uninit(struct drm_i915_private *dev_priv)
 		if (!has_phy_misc(dev_priv, phy))
 			goto skip_phy_misc;
 
-		val = intel_de_read(dev_priv, ICL_PHY_MISC(phy));
-		val |= ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
-		intel_de_write(dev_priv, ICL_PHY_MISC(phy), val);
+		intel_de_rmw(dev_priv, ICL_PHY_MISC(phy), 0,
+			     ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN);
 
 skip_phy_misc:
-		val = intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy));
-		val &= ~COMP_INIT;
-		intel_de_write(dev_priv, ICL_PORT_COMP_DW0(phy), val);
+		intel_de_rmw(dev_priv, ICL_PORT_COMP_DW0(phy), COMP_INIT, 0);
 	}
 }
 

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

@@ -389,9 +389,7 @@ static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv,
 			"force reprogramming it\n", phy);
 	}
 
-	val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
-	val |= phy_info->pwron_mask;
-	intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON, val);
+	intel_de_rmw(dev_priv, BXT_P_CR_GT_DISP_PWRON, 0, phy_info->pwron_mask);
 
 	/*
 	 * The PHY registers start out inaccessible and respond to reads with
@@ -410,27 +408,19 @@ static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv,
 			phy);
 
 	/* Program PLL Rcomp code offset */
-	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW9(phy));
-	val &= ~IREF0RC_OFFSET_MASK;
-	val |= 0xE4 << IREF0RC_OFFSET_SHIFT;
-	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW9(phy), val);
+	intel_de_rmw(dev_priv, BXT_PORT_CL1CM_DW9(phy), IREF0RC_OFFSET_MASK,
+		     0xE4 << IREF0RC_OFFSET_SHIFT);
 
-	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW10(phy));
-	val &= ~IREF1RC_OFFSET_MASK;
-	val |= 0xE4 << IREF1RC_OFFSET_SHIFT;
-	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW10(phy), val);
+	intel_de_rmw(dev_priv, BXT_PORT_CL1CM_DW10(phy), IREF1RC_OFFSET_MASK,
+		     0xE4 << IREF1RC_OFFSET_SHIFT);
 
 	/* Program power gating */
-	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW28(phy));
-	val |= OCL1_POWER_DOWN_EN | DW28_OLDO_DYN_PWR_DOWN_EN |
-		SUS_CLK_CONFIG;
-	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW28(phy), val);
-
-	if (phy_info->dual_channel) {
-		val = intel_de_read(dev_priv, BXT_PORT_CL2CM_DW6(phy));
-		val |= DW6_OLDO_DYN_PWR_DOWN_EN;
-		intel_de_write(dev_priv, BXT_PORT_CL2CM_DW6(phy), val);
-	}
+	intel_de_rmw(dev_priv, BXT_PORT_CL1CM_DW28(phy), 0,
+		     OCL1_POWER_DOWN_EN | DW28_OLDO_DYN_PWR_DOWN_EN | SUS_CLK_CONFIG);
+
+	if (phy_info->dual_channel)
+		intel_de_rmw(dev_priv, BXT_PORT_CL2CM_DW6(phy), 0,
+			     DW6_OLDO_DYN_PWR_DOWN_EN);
 
 	if (phy_info->rcomp_phy != -1) {
 		u32 grc_code;
@@ -449,34 +439,25 @@ static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv,
 			   val << GRC_CODE_SLOW_SHIFT |
 			   val;
 		intel_de_write(dev_priv, BXT_PORT_REF_DW6(phy), grc_code);
-
-		val = intel_de_read(dev_priv, BXT_PORT_REF_DW8(phy));
-		val |= GRC_DIS | GRC_RDY_OVRD;
-		intel_de_write(dev_priv, BXT_PORT_REF_DW8(phy), val);
+		intel_de_rmw(dev_priv, BXT_PORT_REF_DW8(phy),
+			     0, GRC_DIS | GRC_RDY_OVRD);
 	}
 
 	if (phy_info->reset_delay)
 		udelay(phy_info->reset_delay);
 
-	val = intel_de_read(dev_priv, BXT_PHY_CTL_FAMILY(phy));
-	val |= COMMON_RESET_DIS;
-	intel_de_write(dev_priv, BXT_PHY_CTL_FAMILY(phy), val);
+	intel_de_rmw(dev_priv, BXT_PHY_CTL_FAMILY(phy), 0, COMMON_RESET_DIS);
 }
 
 void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy)
 {
 	const struct bxt_ddi_phy_info *phy_info;
-	u32 val;
 
 	phy_info = bxt_get_phy_info(dev_priv, phy);
 
-	val = intel_de_read(dev_priv, BXT_PHY_CTL_FAMILY(phy));
-	val &= ~COMMON_RESET_DIS;
-	intel_de_write(dev_priv, BXT_PHY_CTL_FAMILY(phy), val);
+	intel_de_rmw(dev_priv, BXT_PHY_CTL_FAMILY(phy), COMMON_RESET_DIS, 0);
 
-	val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
-	val &= ~phy_info->pwron_mask;
-	intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON, val);
+	intel_de_rmw(dev_priv, BXT_P_CR_GT_DISP_PWRON, phy_info->pwron_mask, 0);
 }
 
 void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy)