[PATCH 14/16] drm/i915: Use intel_de_rmw() for icl mg phy programming

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Streamline the code by using intel_de_rmw().

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 111 ++++++++---------------
 1 file changed, 39 insertions(+), 72 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 3c1b289df2c0..ce8c85701cff 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1165,7 +1165,6 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
 	enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
 	const struct intel_ddi_buf_trans *trans;
 	int n_entries, ln;
-	u32 val;
 
 	if (intel_tc_port_in_tbt_alt_mode(enc_to_dig_port(encoder)))
 		return;
@@ -1174,15 +1173,11 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
 	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
 		return;
 
-	/* Set MG_TX_LINK_PARAMS cri_use_fs32 to 0. */
 	for (ln = 0; ln < 2; ln++) {
-		val = intel_de_read(dev_priv, MG_TX1_LINK_PARAMS(ln, tc_port));
-		val &= ~CRI_USE_FS32;
-		intel_de_write(dev_priv, MG_TX1_LINK_PARAMS(ln, tc_port), val);
-
-		val = intel_de_read(dev_priv, MG_TX2_LINK_PARAMS(ln, tc_port));
-		val &= ~CRI_USE_FS32;
-		intel_de_write(dev_priv, MG_TX2_LINK_PARAMS(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX1_LINK_PARAMS(ln, tc_port),
+			     CRI_USE_FS32, 0);
+		intel_de_rmw(dev_priv, MG_TX2_LINK_PARAMS(ln, tc_port),
+			     CRI_USE_FS32, 0);
 	}
 
 	/* Program MG_TX_SWINGCTRL with values from vswing table */
@@ -1191,19 +1186,15 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
 
 		level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
 
-		val = intel_de_read(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port));
-		val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
-		val |= CRI_TXDEEMPH_OVERRIDE_17_12(
-			trans->entries[level].mg.cri_txdeemph_override_17_12);
-		intel_de_write(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_17_12_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_17_12(trans->entries[level].mg.cri_txdeemph_override_17_12));
 
 		level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
 
-		val = intel_de_read(dev_priv, MG_TX2_SWINGCTRL(ln, tc_port));
-		val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
-		val |= CRI_TXDEEMPH_OVERRIDE_17_12(
-			trans->entries[level].mg.cri_txdeemph_override_17_12);
-		intel_de_write(dev_priv, MG_TX2_SWINGCTRL(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX2_SWINGCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_17_12_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_17_12(trans->entries[level].mg.cri_txdeemph_override_17_12));
 	}
 
 	/* Program MG_TX_DRVCTRL with values from vswing table */
@@ -1212,27 +1203,21 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
 
 		level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
 
-		val = intel_de_read(dev_priv, MG_TX1_DRVCTRL(ln, tc_port));
-		val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
-			 CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
-		val |= CRI_TXDEEMPH_OVERRIDE_5_0(
-			trans->entries[level].mg.cri_txdeemph_override_5_0) |
-			CRI_TXDEEMPH_OVERRIDE_11_6(
-				trans->entries[level].mg.cri_txdeemph_override_11_6) |
-			CRI_TXDEEMPH_OVERRIDE_EN;
-		intel_de_write(dev_priv, MG_TX1_DRVCTRL(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX1_DRVCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			     CRI_TXDEEMPH_OVERRIDE_5_0_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_5_0(trans->entries[level].mg.cri_txdeemph_override_5_0) |
+			     CRI_TXDEEMPH_OVERRIDE_11_6(trans->entries[level].mg.cri_txdeemph_override_11_6) |
+			     CRI_TXDEEMPH_OVERRIDE_EN);
 
 		level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
 
-		val = intel_de_read(dev_priv, MG_TX2_DRVCTRL(ln, tc_port));
-		val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
-			 CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
-		val |= CRI_TXDEEMPH_OVERRIDE_5_0(
-			trans->entries[level].mg.cri_txdeemph_override_5_0) |
-			CRI_TXDEEMPH_OVERRIDE_11_6(
-				trans->entries[level].mg.cri_txdeemph_override_11_6) |
-			CRI_TXDEEMPH_OVERRIDE_EN;
-		intel_de_write(dev_priv, MG_TX2_DRVCTRL(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX2_DRVCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			     CRI_TXDEEMPH_OVERRIDE_5_0_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_5_0(trans->entries[level].mg.cri_txdeemph_override_5_0) |
+			     CRI_TXDEEMPH_OVERRIDE_11_6(trans->entries[level].mg.cri_txdeemph_override_11_6) |
+			     CRI_TXDEEMPH_OVERRIDE_EN);
 
 		/* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */
 	}
@@ -1243,50 +1228,32 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
 	 * values from table for which TX1 and TX2 enabled.
 	 */
 	for (ln = 0; ln < 2; ln++) {
-		val = intel_de_read(dev_priv, MG_CLKHUB(ln, tc_port));
-		if (crtc_state->port_clock < 300000)
-			val |= CFG_LOW_RATE_LKREN_EN;
-		else
-			val &= ~CFG_LOW_RATE_LKREN_EN;
-		intel_de_write(dev_priv, MG_CLKHUB(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_CLKHUB(ln, tc_port),
+			     CFG_LOW_RATE_LKREN_EN,
+			     crtc_state->port_clock < 300000 ? CFG_LOW_RATE_LKREN_EN : 0);
 	}
 
 	/* Program the MG_TX_DCC<LN, port being used> based on the link frequency */
 	for (ln = 0; ln < 2; ln++) {
-		val = intel_de_read(dev_priv, MG_TX1_DCC(ln, tc_port));
-		val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
-		if (crtc_state->port_clock <= 500000) {
-			val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
-		} else {
-			val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
-				CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
-		}
-		intel_de_write(dev_priv, MG_TX1_DCC(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX1_DCC(ln, tc_port),
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN,
+			     crtc_state->port_clock > 500000 ?
+			     CFG_AMI_CK_DIV_OVERRIDE_EN | CFG_AMI_CK_DIV_OVERRIDE_VAL(1) : 0);
 
-		val = intel_de_read(dev_priv, MG_TX2_DCC(ln, tc_port));
-		val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
-		if (crtc_state->port_clock <= 500000) {
-			val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
-		} else {
-			val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
-				CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
-		}
-		intel_de_write(dev_priv, MG_TX2_DCC(ln, tc_port), val);
+		intel_de_rmw(dev_priv, MG_TX2_DCC(ln, tc_port),
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN,
+			     crtc_state->port_clock > 500000 ?
+			     CFG_AMI_CK_DIV_OVERRIDE_EN | CFG_AMI_CK_DIV_OVERRIDE_VAL(1) : 0);
 	}
 
 	/* Program MG_TX_PISO_READLOAD with values from vswing table */
 	for (ln = 0; ln < 2; ln++) {
-		val = intel_de_read(dev_priv,
-				    MG_TX1_PISO_READLOAD(ln, tc_port));
-		val |= CRI_CALCINIT;
-		intel_de_write(dev_priv, MG_TX1_PISO_READLOAD(ln, tc_port),
-			       val);
-
-		val = intel_de_read(dev_priv,
-				    MG_TX2_PISO_READLOAD(ln, tc_port));
-		val |= CRI_CALCINIT;
-		intel_de_write(dev_priv, MG_TX2_PISO_READLOAD(ln, tc_port),
-			       val);
+		intel_de_rmw(dev_priv, MG_TX1_PISO_READLOAD(ln, tc_port),
+			     0, CRI_CALCINIT);
+		intel_de_rmw(dev_priv, MG_TX2_PISO_READLOAD(ln, tc_port),
+			     0, CRI_CALCINIT);
 	}
 }
 
-- 
2.32.0




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