diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index ae14c794c4bc09..b02ac9d2b1e4a2 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -207,7 +207,7 @@ void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	u32 tmp, mode_flags;
+	u32 mode_flags;
 	enum port port;
 
 	mode_flags = crtc_state->mode_flags;
@@ -224,9 +224,7 @@ void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
 	else
 		return;
 
-	tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
-	tmp |= DSI_FRAME_UPDATE_REQUEST;
-	intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
+	intel_de_rmw(dev_priv, DSI_CMD_FRMCTL(port), 0, DSI_FRAME_UPDATE_REQUEST);
 }
 
 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
@@ -234,7 +232,7 @@ static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum phy phy;
-	u32 tmp;
+	u32 tmp, mask, val;
 	int lane;
 
 	for_each_dsi_phy(phy, intel_dsi->phys) {
@@ -242,56 +240,35 @@ static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
 		 * Program voltage swing and pre-emphasis level values as per
 		 * table in BSPEC under DDI buffer programing
 		 */
+		mask = SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK;
+		val = SCALING_MODE_SEL(0x2) | TAP2_DISABLE | TAP3_DISABLE |
+		      RTERM_SELECT(0x6);
 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
-		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
-		tmp |= SCALING_MODE_SEL(0x2);
-		tmp |= TAP2_DISABLE | TAP3_DISABLE;
-		tmp |= RTERM_SELECT(0x6);
+		tmp &= ~mask;
+		tmp |= val;
 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), mask, val);
 
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
-		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
-		tmp |= SCALING_MODE_SEL(0x2);
-		tmp |= TAP2_DISABLE | TAP3_DISABLE;
-		tmp |= RTERM_SELECT(0x6);
-		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
-
+		mask = SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
+		       RCOMP_SCALAR_MASK;
+		val = SWING_SEL_UPPER(0x2) | SWING_SEL_LOWER(0x2) |
+		      RCOMP_SCALAR(0x98);
 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
-		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
-			 RCOMP_SCALAR_MASK);
-		tmp |= SWING_SEL_UPPER(0x2);
-		tmp |= SWING_SEL_LOWER(0x2);
-		tmp |= RCOMP_SCALAR(0x98);
+		tmp &= ~mask;
+		tmp |= val;
 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW2_AUX(phy), mask, val);
 
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
-		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
-			 RCOMP_SCALAR_MASK);
-		tmp |= SWING_SEL_UPPER(0x2);
-		tmp |= SWING_SEL_LOWER(0x2);
-		tmp |= RCOMP_SCALAR(0x98);
-		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
-
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
-		tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
-			 CURSOR_COEFF_MASK);
-		tmp |= POST_CURSOR_1(0x0);
-		tmp |= POST_CURSOR_2(0x0);
-		tmp |= CURSOR_COEFF(0x3f);
-		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
-
-		for (lane = 0; lane <= 3; lane++) {
-			/* Bspec: must not use GRP register for write */
-			tmp = intel_de_read(dev_priv,
-					    ICL_PORT_TX_DW4_LN(lane, phy));
-			tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
-				 CURSOR_COEFF_MASK);
-			tmp |= POST_CURSOR_1(0x0);
-			tmp |= POST_CURSOR_2(0x0);
-			tmp |= CURSOR_COEFF(0x3f);
-			intel_de_write(dev_priv,
-				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
-		}
+		mask = POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
+		       CURSOR_COEFF_MASK;
+		val = POST_CURSOR_1(0x0) | POST_CURSOR_2(0x0) |
+		      CURSOR_COEFF(0x3f);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_AUX(phy), mask, val);
+
+		/* Bspec: must not use GRP register for write */
+		for (lane = 0; lane <= 3; lane++)
+			intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(lane, phy),
+				     mask, val);
 	}
 }
 
@@ -310,7 +287,6 @@ static void configure_dual_link_mode(struct intel_encoder *encoder,
 	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
 		const struct drm_display_mode *adjusted_mode =
 					&pipe_config->hw.adjusted_mode;
-		u32 dss_ctl2;
 		u16 hactive = adjusted_mode->crtc_hdisplay;
 		u16 dl_buffer_depth;
 
@@ -323,10 +299,8 @@ static void configure_dual_link_mode(struct intel_encoder *encoder,
 
 		dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK;
 		dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
-		dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2);
-		dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK;
-		dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
-		intel_de_write(dev_priv, DSS_CTL2, dss_ctl2);
+		intel_de_rmw(dev_priv, DSS_CTL2, RIGHT_DL_BUF_TARGET_DEPTH_MASK,
+			     RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth));
 	} else {
 		/* Interleave */
 		dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE;
@@ -412,13 +386,10 @@ static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum port port;
-	u32 tmp;
 
-	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
-		tmp |= COMBO_PHY_MODE_DSI;
-		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
-	}
+	for_each_dsi_port(port, intel_dsi->ports)
+		intel_de_rmw(dev_priv, ICL_DSI_IO_MODECTL(port),
+			     0, COMBO_PHY_MODE_DSI);
 
 	get_dsi_io_power_domains(dev_priv, intel_dsi);
 }
@@ -444,26 +415,16 @@ static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
 
 	/* Step 4b(i) set loadgen select for transmit and aux lanes */
 	for_each_dsi_phy(phy, intel_dsi->phys) {
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
-		tmp &= ~LOADGEN_SELECT;
-		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
-		for (lane = 0; lane <= 3; lane++) {
-			tmp = intel_de_read(dev_priv,
-					    ICL_PORT_TX_DW4_LN(lane, phy));
-			tmp &= ~LOADGEN_SELECT;
-			if (lane != 2)
-				tmp |= LOADGEN_SELECT;
-			intel_de_write(dev_priv,
-				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
-		}
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_AUX(phy), LOADGEN_SELECT, 0);
+		for (lane = 0; lane <= 3; lane++)
+			intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(lane, phy),
+				     LOADGEN_SELECT, lane != 2 ? LOADGEN_SELECT : 0);
 	}
 
 	/* Step 4b(ii) set latency optimization for transmit and aux lanes */
 	for_each_dsi_phy(phy, intel_dsi->phys) {
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
-		tmp &= ~FRC_LATENCY_OPTIM_MASK;
-		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
-		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW2_AUX(phy),
+			     FRC_LATENCY_OPTIM_MASK, FRC_LATENCY_OPTIM_VAL(0x5));
 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
 		tmp &= ~FRC_LATENCY_OPTIM_MASK;
 		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
@@ -471,12 +432,8 @@ static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
 
 		/* For EHL, TGL, set latency optimization for PCS_DW1 lanes */
 		if (IS_JSL_EHL(dev_priv) || (DISPLAY_VER(dev_priv) >= 12)) {
-			tmp = intel_de_read(dev_priv,
-					    ICL_PORT_PCS_DW1_AUX(phy));
-			tmp &= ~LATENCY_OPTIM_MASK;
-			tmp |= LATENCY_OPTIM_VAL(0);
-			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
-				       tmp);
+			intel_de_rmw(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
+				     LATENCY_OPTIM_MASK, LATENCY_OPTIM_VAL(0));
 
 			tmp = intel_de_read(dev_priv,
 					    ICL_PORT_PCS_DW1_LN(0, phy));
@@ -501,9 +458,7 @@ static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
 		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
 		tmp &= ~COMMON_KEEPER_EN;
 		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp);
-		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy));
-		tmp &= ~COMMON_KEEPER_EN;
-		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), COMMON_KEEPER_EN, 0);
 	}
 
 	/*
@@ -511,20 +466,15 @@ static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
 	 * Note: loadgen select program is done
 	 * as part of lane phy sequence configuration
 	 */
-	for_each_dsi_phy(phy, intel_dsi->phys) {
-		tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
-		tmp |= SUS_CLOCK_CONFIG;
-		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp);
-	}
+	for_each_dsi_phy(phy, intel_dsi->phys)
+		intel_de_rmw(dev_priv, ICL_PORT_CL_DW5(phy), 0, SUS_CLOCK_CONFIG);
 
 	/* Clear training enable to change swing values */
 	for_each_dsi_phy(phy, intel_dsi->phys) {
 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
 		tmp &= ~TX_TRAINING_EN;
 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
-		tmp &= ~TX_TRAINING_EN;
-		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), TX_TRAINING_EN, 0);
 	}
 
 	/* Program swing and de-emphasis */
@@ -535,9 +485,7 @@ static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
 		tmp |= TX_TRAINING_EN;
 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
-		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
-		tmp |= TX_TRAINING_EN;
-		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), 0, TX_TRAINING_EN);
 	}
 }
 
@@ -545,13 +493,10 @@ static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
-	u32 tmp;
 	enum port port;
 
 	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
-		tmp |= DDI_BUF_CTL_ENABLE;
-		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
+		intel_de_rmw(dev_priv, DDI_BUF_CTL(port), 0, DDI_BUF_CTL_ENABLE);
 
 		if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
 				  DDI_BUF_IS_IDLE),
@@ -567,17 +512,13 @@ gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
-	u32 tmp;
 	enum port port;
 	enum phy phy;
 
 	/* Program T-INIT master registers */
-	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port));
-		tmp &= ~DSI_T_INIT_MASTER_MASK;
-		tmp |= intel_dsi->init_count;
-		intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp);
-	}
+	for_each_dsi_port(port, intel_dsi->ports)
+		intel_de_rmw(dev_priv, ICL_DSI_T_INIT_MASTER(port),
+			     DSI_T_INIT_MASTER_MASK, intel_dsi->init_count);
 
 	/* Program DPHY clock lanes timings */
 	for_each_dsi_port(port, intel_dsi->ports) {
@@ -608,31 +549,22 @@ gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
 	if (DISPLAY_VER(dev_priv) == 11) {
 		if (afe_clk(encoder, crtc_state) <= 800000) {
 			for_each_dsi_port(port, intel_dsi->ports) {
-				tmp = intel_de_read(dev_priv,
-						    DPHY_TA_TIMING_PARAM(port));
-				tmp &= ~TA_SURE_MASK;
-				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
-				intel_de_write(dev_priv,
-					       DPHY_TA_TIMING_PARAM(port),
-					       tmp);
+				intel_de_rmw(dev_priv, DPHY_TA_TIMING_PARAM(port),
+					     TA_SURE_MASK,
+					     TA_SURE_OVERRIDE | TA_SURE(0));
 
 				/* shadow register inside display core */
-				tmp = intel_de_read(dev_priv,
-						    DSI_TA_TIMING_PARAM(port));
-				tmp &= ~TA_SURE_MASK;
-				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
-				intel_de_write(dev_priv,
-					       DSI_TA_TIMING_PARAM(port), tmp);
+				intel_de_rmw(dev_priv, DSI_TA_TIMING_PARAM(port),
+					     TA_SURE_MASK,
+					     TA_SURE_OVERRIDE | TA_SURE(0));
 			}
 		}
 	}
 
 	if (IS_JSL_EHL(dev_priv)) {
-		for_each_dsi_phy(phy, intel_dsi->phys) {
-			tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy));
-			tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP;
-			intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp);
-		}
+		for_each_dsi_phy(phy, intel_dsi->phys)
+			intel_de_rmw(dev_priv, ICL_DPHY_CHKN(phy),
+				     0, ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP);
 	}
 }
 
@@ -824,11 +756,8 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 	if (intel_dsi->dual_link) {
 		for_each_dsi_port(port, intel_dsi->ports) {
 			dsi_trans = dsi_port_to_transcoder(port);
-			tmp = intel_de_read(dev_priv,
-					    TRANS_DDI_FUNC_CTL2(dsi_trans));
-			tmp |= PORT_SYNC_MODE_ENABLE;
-			intel_de_write(dev_priv,
-				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
+			intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL2(dsi_trans),
+				     0, PORT_SYNC_MODE_ENABLE);
 		}
 
 		/* configure stream splitting */
@@ -1044,13 +973,10 @@ static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder)
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum port port;
 	enum transcoder dsi_trans;
-	u32 tmp;
 
 	for_each_dsi_port(port, intel_dsi->ports) {
 		dsi_trans = dsi_port_to_transcoder(port);
-		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
-		tmp |= PIPECONF_ENABLE;
-		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, PIPECONF(dsi_trans), 0, PIPECONF_ENABLE);
 
 		/* wait for transcoder to be enabled */
 		if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans),
@@ -1067,7 +993,7 @@ static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum port port;
 	enum transcoder dsi_trans;
-	u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
+	u32 hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
 
 	/*
 	 * escape clock count calculation:
@@ -1087,26 +1013,23 @@ static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
 		dsi_trans = dsi_port_to_transcoder(port);
 
 		/* program hst_tx_timeout */
-		tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans));
-		tmp &= ~HSTX_TIMEOUT_VALUE_MASK;
-		tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout);
-		intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, DSI_HSTX_TO(dsi_trans),
+			     HSTX_TIMEOUT_VALUE_MASK,
+			     HSTX_TIMEOUT_VALUE(hs_tx_timeout));
 
 		/* FIXME: DSI_CALIB_TO */
 
 		/* program lp_rx_host timeout */
-		tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans));
-		tmp &= ~LPRX_TIMEOUT_VALUE_MASK;
-		tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout);
-		intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, DSI_LPRX_HOST_TO(dsi_trans),
+			     LPRX_TIMEOUT_VALUE_MASK,
+			     LPRX_TIMEOUT_VALUE(lp_rx_timeout));
 
 		/* FIXME: DSI_PWAIT_TO */
 
 		/* program turn around timeout */
-		tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans));
-		tmp &= ~TA_TIMEOUT_VALUE_MASK;
-		tmp |= TA_TIMEOUT_VALUE(ta_timeout);
-		intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, DSI_TA_TO(dsi_trans),
+			     TA_TIMEOUT_VALUE_MASK,
+			     TA_TIMEOUT_VALUE(ta_timeout));
 	}
 }
 
@@ -1310,15 +1233,12 @@ static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder)
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum port port;
 	enum transcoder dsi_trans;
-	u32 tmp;
 
 	for_each_dsi_port(port, intel_dsi->ports) {
 		dsi_trans = dsi_port_to_transcoder(port);
 
 		/* disable transcoder */
-		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
-		tmp &= ~PIPECONF_ENABLE;
-		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, PIPECONF(dsi_trans), PIPECONF_ENABLE, 0);
 
 		/* wait for transcoder to be disabled */
 		if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans),
@@ -1350,11 +1270,9 @@ static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
 
 	/* disable periodic update mode */
 	if (is_cmd_mode(intel_dsi)) {
-		for_each_dsi_port(port, intel_dsi->ports) {
-			tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
-			tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE;
-			intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
-		}
+		for_each_dsi_port(port, intel_dsi->ports)
+			intel_de_rmw(dev_priv, DSI_CMD_FRMCTL(port),
+				     DSI_PERIODIC_FRAME_UPDATE_ENABLE, 0);
 	}
 
 	/* put dsi link in ULPS */
@@ -1374,20 +1292,16 @@ static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
 	/* disable ddi function */
 	for_each_dsi_port(port, intel_dsi->ports) {
 		dsi_trans = dsi_port_to_transcoder(port);
-		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
-		tmp &= ~TRANS_DDI_FUNC_ENABLE;
-		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
+		intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans),
+			     TRANS_DDI_FUNC_ENABLE, 0);
 	}
 
 	/* disable port sync mode if dual link */
 	if (intel_dsi->dual_link) {
 		for_each_dsi_port(port, intel_dsi->ports) {
 			dsi_trans = dsi_port_to_transcoder(port);
-			tmp = intel_de_read(dev_priv,
-					    TRANS_DDI_FUNC_CTL2(dsi_trans));
-			tmp &= ~PORT_SYNC_MODE_ENABLE;
-			intel_de_write(dev_priv,
-				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
+			intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL2(dsi_trans),
+				     PORT_SYNC_MODE_ENABLE, 0);
 		}
 	}
 }
@@ -1396,14 +1310,11 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
-	u32 tmp;
 	enum port port;
 
 	gen11_dsi_ungate_clocks(encoder);
 	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
-		tmp &= ~DDI_BUF_CTL_ENABLE;
-		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
+		intel_de_rmw(dev_priv, DDI_BUF_CTL(port), DDI_BUF_CTL_ENABLE, 0);
 
 		if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
 				 DDI_BUF_IS_IDLE),
@@ -1420,7 +1331,6 @@ static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	enum port port;
-	u32 tmp;
 
 	for_each_dsi_port(port, intel_dsi->ports) {
 		intel_wakeref_t wakeref;
@@ -1434,11 +1344,9 @@ static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
 	}
 
 	/* set mode to DDI */
-	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
-		tmp &= ~COMBO_PHY_MODE_DSI;
-		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
-	}
+	for_each_dsi_port(port, intel_dsi->ports)
+		intel_de_rmw(dev_priv, ICL_DSI_IO_MODECTL(port),
+			     COMBO_PHY_MODE_DSI, 0);
 }
 
 static void gen11_dsi_disable(struct intel_atomic_state *state,
