1 files changed, 206 insertions, 266 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 26a3aa73fcc4..9903a78df896 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -51,6 +51,7 @@
 #include "intel_panel.h"
 #include "intel_pps.h"
 #include "intel_psr.h"
+#include "intel_snps_phy.h"
 #include "intel_sprite.h"
 #include "intel_tc.h"
 #include "intel_vdsc.h"
@@ -171,14 +172,18 @@ void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
 static void intel_wait_ddi_buf_active(struct drm_i915_private *dev_priv,
 				      enum port port)
 {
+	int ret;
+
 	/* Wait > 518 usecs for DDI_BUF_CTL to be non idle */
 	if (DISPLAY_VER(dev_priv) < 10) {
 		usleep_range(518, 1000);
 		return;
 	}
 
-	if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
-			  DDI_BUF_IS_IDLE), 500))
+	ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
+			  DDI_BUF_IS_IDLE), IS_DG2(dev_priv) ? 1200 : 500, 10, 10);
+
+	if (ret)
 		drm_err(&dev_priv->drm, "Timeout waiting for DDI BUF %c to get active\n",
 			port_name(port));
 }
@@ -822,7 +827,7 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 static enum intel_display_power_domain
 intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
 {
-	/* CNL+ HW requires corresponding AUX IOs to be powered up for PSR with
+	/* ICL+ HW requires corresponding AUX IOs to be powered up for PSR with
 	 * DC states enabled at the same time, while for driver initiated AUX
 	 * transfers we need the same AUX IOs to be powered but with DC states
 	 * disabled. Accordingly use the AUX power domain here which leaves DC
@@ -1017,126 +1022,6 @@ static u8 intel_ddi_dp_preemph_max(struct intel_dp *intel_dp)
 	return DP_TRAIN_PRE_EMPH_LEVEL_3;
 }
 
-static void cnl_ddi_vswing_program(struct intel_encoder *encoder,
-				   const struct intel_crtc_state *crtc_state,
-				   int level)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	const struct intel_ddi_buf_trans *ddi_translations;
-	enum port port = encoder->port;
-	int n_entries, ln;
-	u32 val;
-
-	ddi_translations = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
-	if (drm_WARN_ON_ONCE(&dev_priv->drm, !ddi_translations))
-		return;
-	if (drm_WARN_ON_ONCE(&dev_priv->drm, level >= n_entries))
-		level = n_entries - 1;
-
-	/* Set PORT_TX_DW5 Scaling Mode Sel to 010b. */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW5_LN0(port));
-	val &= ~SCALING_MODE_SEL_MASK;
-	val |= SCALING_MODE_SEL(2);
-	intel_de_write(dev_priv, CNL_PORT_TX_DW5_GRP(port), val);
-
-	/* Program PORT_TX_DW2 */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW2_LN0(port));
-	val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
-		 RCOMP_SCALAR_MASK);
-	val |= SWING_SEL_UPPER(ddi_translations->entries[level].cnl.dw2_swing_sel);
-	val |= SWING_SEL_LOWER(ddi_translations->entries[level].cnl.dw2_swing_sel);
-	/* Rcomp scalar is fixed as 0x98 for every table entry */
-	val |= RCOMP_SCALAR(0x98);
-	intel_de_write(dev_priv, CNL_PORT_TX_DW2_GRP(port), val);
-
-	/* Program PORT_TX_DW4 */
-	/* We cannot write to GRP. It would overrite individual loadgen */
-	for (ln = 0; ln < 4; ln++) {
-		val = intel_de_read(dev_priv, CNL_PORT_TX_DW4_LN(ln, port));
-		val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
-			 CURSOR_COEFF_MASK);
-		val |= POST_CURSOR_1(ddi_translations->entries[level].cnl.dw4_post_cursor_1);
-		val |= POST_CURSOR_2(ddi_translations->entries[level].cnl.dw4_post_cursor_2);
-		val |= CURSOR_COEFF(ddi_translations->entries[level].cnl.dw4_cursor_coeff);
-		intel_de_write(dev_priv, CNL_PORT_TX_DW4_LN(ln, port), val);
-	}
-
-	/* Program PORT_TX_DW5 */
-	/* All DW5 values are fixed for every table entry */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW5_LN0(port));
-	val &= ~RTERM_SELECT_MASK;
-	val |= RTERM_SELECT(6);
-	val |= TAP3_DISABLE;
-	intel_de_write(dev_priv, CNL_PORT_TX_DW5_GRP(port), val);
-
-	/* Program PORT_TX_DW7 */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW7_LN0(port));
-	val &= ~N_SCALAR_MASK;
-	val |= N_SCALAR(ddi_translations->entries[level].cnl.dw7_n_scalar);
-	intel_de_write(dev_priv, CNL_PORT_TX_DW7_GRP(port), val);
-}
-
-static void cnl_ddi_vswing_sequence(struct intel_encoder *encoder,
-				    const struct intel_crtc_state *crtc_state,
-				    int level)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	enum port port = encoder->port;
-	int width, rate, ln;
-	u32 val;
-
-	width = crtc_state->lane_count;
-	rate = crtc_state->port_clock;
-
-	/*
-	 * 1. If port type is eDP or DP,
-	 * set PORT_PCS_DW1 cmnkeeper_enable to 1b,
-	 * else clear to 0b.
-	 */
-	val = intel_de_read(dev_priv, CNL_PORT_PCS_DW1_LN0(port));
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
-		val &= ~COMMON_KEEPER_EN;
-	else
-		val |= COMMON_KEEPER_EN;
-	intel_de_write(dev_priv, CNL_PORT_PCS_DW1_GRP(port), val);
-
-	/* 2. Program loadgen select */
-	/*
-	 * Program PORT_TX_DW4_LN depending on Bit rate and used lanes
-	 * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
-	 * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
-	 * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
-	 */
-	for (ln = 0; ln <= 3; ln++) {
-		val = intel_de_read(dev_priv, CNL_PORT_TX_DW4_LN(ln, port));
-		val &= ~LOADGEN_SELECT;
-
-		if ((rate <= 600000 && width == 4 && ln >= 1)  ||
-		    (rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) {
-			val |= LOADGEN_SELECT;
-		}
-		intel_de_write(dev_priv, CNL_PORT_TX_DW4_LN(ln, port), val);
-	}
-
-	/* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
-	val = intel_de_read(dev_priv, CNL_PORT_CL1CM_DW5);
-	val |= SUS_CLOCK_CONFIG;
-	intel_de_write(dev_priv, CNL_PORT_CL1CM_DW5, val);
-
-	/* 4. Clear training enable to change swing values */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW5_LN0(port));
-	val &= ~TX_TRAINING_EN;
-	intel_de_write(dev_priv, CNL_PORT_TX_DW5_GRP(port), val);
-
-	/* 5. Program swing and de-emphasis */
-	cnl_ddi_vswing_program(encoder, crtc_state, level);
-
-	/* 6. Set training enable to trigger update */
-	val = intel_de_read(dev_priv, CNL_PORT_TX_DW5_LN0(port));
-	val |= TX_TRAINING_EN;
-	intel_de_write(dev_priv, CNL_PORT_TX_DW5_GRP(port), val);
-}
-
 static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
 					 const struct intel_crtc_state *crtc_state,
 					 int level)
@@ -1175,8 +1060,8 @@ static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
 	val = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN0(phy));
 	val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
 		 RCOMP_SCALAR_MASK);
-	val |= SWING_SEL_UPPER(ddi_translations->entries[level].cnl.dw2_swing_sel);
-	val |= SWING_SEL_LOWER(ddi_translations->entries[level].cnl.dw2_swing_sel);
+	val |= SWING_SEL_UPPER(ddi_translations->entries[level].icl.dw2_swing_sel);
+	val |= SWING_SEL_LOWER(ddi_translations->entries[level].icl.dw2_swing_sel);
 	/* Program Rcomp scalar for every table entry */
 	val |= RCOMP_SCALAR(0x98);
 	intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), val);
@@ -1187,16 +1072,16 @@ static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
 		val = intel_de_read(dev_priv, ICL_PORT_TX_DW4_LN(ln, phy));
 		val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
 			 CURSOR_COEFF_MASK);
-		val |= POST_CURSOR_1(ddi_translations->entries[level].cnl.dw4_post_cursor_1);
-		val |= POST_CURSOR_2(ddi_translations->entries[level].cnl.dw4_post_cursor_2);
-		val |= CURSOR_COEFF(ddi_translations->entries[level].cnl.dw4_cursor_coeff);
+		val |= POST_CURSOR_1(ddi_translations->entries[level].icl.dw4_post_cursor_1);
+		val |= POST_CURSOR_2(ddi_translations->entries[level].icl.dw4_post_cursor_2);
+		val |= CURSOR_COEFF(ddi_translations->entries[level].icl.dw4_cursor_coeff);
 		intel_de_write(dev_priv, ICL_PORT_TX_DW4_LN(ln, phy), val);
 	}
 
 	/* Program PORT_TX_DW7 */
 	val = intel_de_read(dev_priv, ICL_PORT_TX_DW7_LN0(phy));
 	val &= ~N_SCALAR_MASK;
-	val |= N_SCALAR(ddi_translations->entries[level].cnl.dw7_n_scalar);
+	val |= N_SCALAR(ddi_translations->entries[level].icl.dw7_n_scalar);
 	intel_de_write(dev_priv, ICL_PORT_TX_DW7_GRP(phy), val);
 }
 
@@ -1496,33 +1381,33 @@ static int intel_ddi_dp_level(struct intel_dp *intel_dp)
 }
 
 static void
-tgl_set_signal_levels(struct intel_dp *intel_dp,
+dg2_set_signal_levels(struct intel_dp *intel_dp,
 		      const struct intel_crtc_state *crtc_state)
 {
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	int level = intel_ddi_dp_level(intel_dp);
 
-	tgl_ddi_vswing_sequence(encoder, crtc_state, level);
+	intel_snps_phy_ddi_vswing_sequence(encoder, level);
 }
 
 static void
-icl_set_signal_levels(struct intel_dp *intel_dp,
+tgl_set_signal_levels(struct intel_dp *intel_dp,
 		      const struct intel_crtc_state *crtc_state)
 {
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	int level = intel_ddi_dp_level(intel_dp);
 
-	icl_ddi_vswing_sequence(encoder, crtc_state, level);
+	tgl_ddi_vswing_sequence(encoder, crtc_state, level);
 }
 
 static void
-cnl_set_signal_levels(struct intel_dp *intel_dp,
+icl_set_signal_levels(struct intel_dp *intel_dp,
 		      const struct intel_crtc_state *crtc_state)
 {
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	int level = intel_ddi_dp_level(intel_dp);
 
-	cnl_ddi_vswing_sequence(encoder, crtc_state, level);
+	icl_ddi_vswing_sequence(encoder, crtc_state, level);
 }
 
 static void
@@ -1560,7 +1445,7 @@ hsw_set_signal_levels(struct intel_dp *intel_dp,
 	intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
 }
 
-static void _cnl_ddi_enable_clock(struct drm_i915_private *i915, i915_reg_t reg,
+static void _icl_ddi_enable_clock(struct drm_i915_private *i915, i915_reg_t reg,
 				  u32 clk_sel_mask, u32 clk_sel, u32 clk_off)
 {
 	mutex_lock(&i915->dpll.lock);
@@ -1576,7 +1461,7 @@ static void _cnl_ddi_enable_clock(struct drm_i915_private *i915, i915_reg_t reg,
 	mutex_unlock(&i915->dpll.lock);
 }
 
-static void _cnl_ddi_disable_clock(struct drm_i915_private *i915, i915_reg_t reg,
+static void _icl_ddi_disable_clock(struct drm_i915_private *i915, i915_reg_t reg,
 				   u32 clk_off)
 {
 	mutex_lock(&i915->dpll.lock);
@@ -1586,14 +1471,14 @@ static void _cnl_ddi_disable_clock(struct drm_i915_private *i915, i915_reg_t reg
 	mutex_unlock(&i915->dpll.lock);
 }
 
-static bool _cnl_ddi_is_clock_enabled(struct drm_i915_private *i915, i915_reg_t reg,
+static bool _icl_ddi_is_clock_enabled(struct drm_i915_private *i915, i915_reg_t reg,
 				      u32 clk_off)
 {
 	return !(intel_de_read(i915, reg) & clk_off);
 }
 
 static struct intel_shared_dpll *
-_cnl_ddi_get_pll(struct drm_i915_private *i915, i915_reg_t reg,
+_icl_ddi_get_pll(struct drm_i915_private *i915, i915_reg_t reg,
 		 u32 clk_sel_mask, u32 clk_sel_shift)
 {
 	enum intel_dpll_id id;
@@ -1613,7 +1498,7 @@ static void adls_ddi_enable_clock(struct intel_encoder *encoder,
 	if (drm_WARN_ON(&i915->drm, !pll))
 		return;
 
-	_cnl_ddi_enable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
+	_icl_ddi_enable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
 			      ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy),
 			      pll->info->id << ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy),
 			      ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
@@ -1624,7 +1509,7 @@ static void adls_ddi_disable_clock(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	_cnl_ddi_disable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
+	_icl_ddi_disable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
 			       ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1633,7 +1518,7 @@ static bool adls_ddi_is_clock_enabled(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_is_clock_enabled(i915, ADLS_DPCLKA_CFGCR(phy),
+	return _icl_ddi_is_clock_enabled(i915, ADLS_DPCLKA_CFGCR(phy),
 					 ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1642,7 +1527,7 @@ static struct intel_shared_dpll *adls_ddi_get_pll(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_get_pll(i915, ADLS_DPCLKA_CFGCR(phy),
+	return _icl_ddi_get_pll(i915, ADLS_DPCLKA_CFGCR(phy),
 				ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy),
 				ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy));
 }
@@ -1657,7 +1542,7 @@ static void rkl_ddi_enable_clock(struct intel_encoder *encoder,
 	if (drm_WARN_ON(&i915->drm, !pll))
 		return;
 
-	_cnl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
+	_icl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
 			      RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
 			      RKL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
 			      RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
@@ -1668,7 +1553,7 @@ static void rkl_ddi_disable_clock(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	_cnl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
+	_icl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
 			       RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1677,7 +1562,7 @@ static bool rkl_ddi_is_clock_enabled(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
+	return _icl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
 					 RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1686,7 +1571,7 @@ static struct intel_shared_dpll *rkl_ddi_get_pll(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
+	return _icl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
 				RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
 				RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy));
 }
@@ -1710,7 +1595,7 @@ static void dg1_ddi_enable_clock(struct intel_encoder *encoder,
 			(pll->info->id >= DPLL_ID_DG1_DPLL2 && phy < PHY_C)))
 		return;
 
-	_cnl_ddi_enable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
+	_icl_ddi_enable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
 			      DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
 			      DG1_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
 			      DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
@@ -1721,7 +1606,7 @@ static void dg1_ddi_disable_clock(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	_cnl_ddi_disable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
+	_icl_ddi_disable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
 			       DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1730,7 +1615,7 @@ static bool dg1_ddi_is_clock_enabled(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_is_clock_enabled(i915, DG1_DPCLKA_CFGCR0(phy),
+	return _icl_ddi_is_clock_enabled(i915, DG1_DPCLKA_CFGCR0(phy),
 					 DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1767,7 +1652,7 @@ static void icl_ddi_combo_enable_clock(struct intel_encoder *encoder,
 	if (drm_WARN_ON(&i915->drm, !pll))
 		return;
 
-	_cnl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
+	_icl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
 			      ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
 			      ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
 			      ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
@@ -1778,7 +1663,7 @@ static void icl_ddi_combo_disable_clock(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	_cnl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
+	_icl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
 			       ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1787,7 +1672,7 @@ static bool icl_ddi_combo_is_clock_enabled(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
+	return _icl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
 					 ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
 }
 
@@ -1796,7 +1681,7 @@ struct intel_shared_dpll *icl_ddi_combo_get_pll(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	return _cnl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
+	return _icl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
 				ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
 				ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy));
 }
@@ -1929,50 +1814,6 @@ static struct intel_shared_dpll *icl_ddi_tc_get_pll(struct intel_encoder *encode
 	return intel_get_shared_dpll_by_id(i915, id);
 }
 
-static void cnl_ddi_enable_clock(struct intel_encoder *encoder,
-				 const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
-	enum port port = encoder->port;
-
-	if (drm_WARN_ON(&i915->drm, !pll))
-		return;
-
-	_cnl_ddi_enable_clock(i915, DPCLKA_CFGCR0,
-			      DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port),
-			      DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port),
-			      DPCLKA_CFGCR0_DDI_CLK_OFF(port));
-}
-
-static void cnl_ddi_disable_clock(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	enum port port = encoder->port;
-
-	_cnl_ddi_disable_clock(i915, DPCLKA_CFGCR0,
-			       DPCLKA_CFGCR0_DDI_CLK_OFF(port));
-}
-
-static bool cnl_ddi_is_clock_enabled(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	enum port port = encoder->port;
-
-	return _cnl_ddi_is_clock_enabled(i915, DPCLKA_CFGCR0,
-					 DPCLKA_CFGCR0_DDI_CLK_OFF(port));
-}
-
-static struct intel_shared_dpll *cnl_ddi_get_pll(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	enum port port = encoder->port;
-
-	return _cnl_ddi_get_pll(i915, DPCLKA_CFGCR0,
-				DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port),
-				DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port));
-}
-
 static struct intel_shared_dpll *bxt_ddi_get_pll(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
@@ -2196,7 +2037,7 @@ void intel_ddi_sanitize_encoder_pll_mapping(struct intel_encoder *encoder)
 		ddi_clk_needed = false;
 	}
 
-	if (ddi_clk_needed || !encoder->disable_clock ||
+	if (ddi_clk_needed || !encoder->is_clock_enabled ||
 	    !encoder->is_clock_enabled(encoder))
 		return;
 
@@ -2410,6 +2251,15 @@ static void intel_ddi_power_up_lanes(struct intel_encoder *encoder,
 	}
 }
 
+/* Splitter enable for eDP MSO is limited to certain pipes. */
+static u8 intel_ddi_splitter_pipe_mask(struct drm_i915_private *i915)
+{
+	if (IS_ALDERLAKE_P(i915))
+		return BIT(PIPE_A) | BIT(PIPE_B);
+	else
+		return BIT(PIPE_A);
+}
+
 static void intel_ddi_mso_get_config(struct intel_encoder *encoder,
 				     struct intel_crtc_state *pipe_config)
 {
@@ -2427,8 +2277,7 @@ static void intel_ddi_mso_get_config(struct intel_encoder *encoder,
 	if (!pipe_config->splitter.enable)
 		return;
 
-	/* Splitter enable is supported for pipe A only. */
-	if (drm_WARN_ON(&i915->drm, pipe != PIPE_A)) {
+	if (drm_WARN_ON(&i915->drm, !(intel_ddi_splitter_pipe_mask(i915) & BIT(pipe)))) {
 		pipe_config->splitter.enable = false;
 		return;
 	}
@@ -2460,10 +2309,6 @@ static void intel_ddi_mso_configure(const struct intel_crtc_state *crtc_state)
 		return;
 
 	if (crtc_state->splitter.enable) {
-		/* Splitter enable is supported for pipe A only. */
-		if (drm_WARN_ON(&i915->drm, pipe != PIPE_A))
-			return;
-
 		dss1 |= SPLITTER_ENABLE;
 		dss1 |= OVERLAP_PIXELS(crtc_state->splitter.pixel_overlap);
 		if (crtc_state->splitter.link_count == 2)
@@ -2477,6 +2322,116 @@ static void intel_ddi_mso_configure(const struct intel_crtc_state *crtc_state)
 		     OVERLAP_PIXELS_MASK, dss1);
 }
 
+static void dg2_ddi_pre_enable_dp(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
+	int level = intel_ddi_dp_level(intel_dp);
+
+	intel_dp_set_link_params(intel_dp, crtc_state->port_clock,
+				 crtc_state->lane_count);
+
+	/*
+	 * 1. Enable Power Wells
+	 *
+	 * This was handled at the beginning of intel_atomic_commit_tail(),
+	 * before we called down into this function.
+	 */
+
+	/* 2. Enable Panel Power if PPS is required */
+	intel_pps_on(intel_dp);
+
+	/*
+	 * 3. Enable the port PLL.
+	 */
+	intel_ddi_enable_clock(encoder, crtc_state);
+
+	/* 4. Enable IO power */
+	if (!intel_phy_is_tc(dev_priv, phy) ||
+	    dig_port->tc_mode != TC_PORT_TBT_ALT)
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+
+	/*
+	 * 5. The rest of the below are substeps under the bspec's "Enable and
+	 * Train Display Port" step.  Note that steps that are specific to
+	 * MST will be handled by intel_mst_pre_enable_dp() before/after it
+	 * calls into this function.  Also intel_mst_pre_enable_dp() only calls
+	 * us when active_mst_links==0, so any steps designated for "single
+	 * stream or multi-stream master transcoder" can just be performed
+	 * unconditionally here.
+	 */
+
+	/*
+	 * 5.a Configure Transcoder Clock Select to direct the Port clock to the
+	 * Transcoder.
+	 */
+	intel_ddi_enable_pipe_clock(encoder, crtc_state);
+
+	/* 5.b Not relevant to i915 for now */
+
+	/*
+	 * 5.c Configure TRANS_DDI_FUNC_CTL DDI Select, DDI Mode Select & MST
+	 * Transport Select
+	 */
+	intel_ddi_config_transcoder_func(encoder, crtc_state);
+
+	/*
+	 * 5.d Configure & enable DP_TP_CTL with link training pattern 1
+	 * selected
+	 *
+	 * This will be handled by the intel_dp_start_link_train() farther
+	 * down this function.
+	 */
+
+	/* 5.e Configure voltage swing and related IO settings */
+	intel_snps_phy_ddi_vswing_sequence(encoder, level);
+
+	/*
+	 * 5.f Configure and enable DDI_BUF_CTL
+	 * 5.g Wait for DDI_BUF_CTL DDI Idle Status = 0b (Not Idle), timeout
+	 *     after 1200 us.
+	 *
+	 * We only configure what the register value will be here.  Actual
+	 * enabling happens during link training farther down.
+	 */
+	intel_ddi_init_dp_buf_reg(encoder, crtc_state);
+
+	if (!is_mst)
+		intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+
+	intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true);
+	/*
+	 * DDI FEC: "anticipates enabling FEC encoding sets the FEC_READY bit
+	 * in the FEC_CONFIGURATION register to 1 before initiating link
+	 * training
+	 */
+	intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
+
+	/*
+	 * 5.h Follow DisplayPort specification training sequence (see notes for
+	 *     failure handling)
+	 * 5.i If DisplayPort multi-stream - Set DP_TP_CTL link training to Idle
+	 *     Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent)
+	 *     (timeout after 800 us)
+	 */
+	intel_dp_start_link_train(intel_dp, crtc_state);
+
+	/* 5.j Set DP_TP_CTL link training to Normal */
+	if (!is_trans_port_sync_mode(crtc_state))
+		intel_dp_stop_link_train(intel_dp, crtc_state);
+
+	/* 5.k Configure and enable FEC if needed */
+	intel_ddi_enable_fec(encoder, crtc_state);
+	intel_dsc_enable(encoder, crtc_state);
+}
+
 static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
 				  struct intel_encoder *encoder,
 				  const struct intel_crtc_state *crtc_state,
@@ -2657,8 +2612,6 @@ static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state,
 
 	if (DISPLAY_VER(dev_priv) >= 11)
 		icl_ddi_vswing_sequence(encoder, crtc_state, level);
-	else if (IS_CANNONLAKE(dev_priv))
-		cnl_ddi_vswing_sequence(encoder, crtc_state, level);
 	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		bxt_ddi_vswing_sequence(encoder, crtc_state, level);
 	else
@@ -2694,7 +2647,9 @@ static void intel_ddi_pre_enable_dp(struct intel_atomic_state *state,
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
-	if (DISPLAY_VER(dev_priv) >= 12)
+	if (IS_DG2(dev_priv))
+		dg2_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
+	else if (DISPLAY_VER(dev_priv) >= 12)
 		tgl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
 	else
 		hsw_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
@@ -3101,12 +3056,12 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
 			    "[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
 			    connector->base.id, connector->name);
 
-	if (DISPLAY_VER(dev_priv) >= 12)
+	if (IS_DG2(dev_priv))
+		intel_snps_phy_ddi_vswing_sequence(encoder, U32_MAX);
+	else if (DISPLAY_VER(dev_priv) >= 12)
 		tgl_ddi_vswing_sequence(encoder, crtc_state, level);
 	else if (DISPLAY_VER(dev_priv) == 11)
 		icl_ddi_vswing_sequence(encoder, crtc_state, level);
-	else if (IS_CANNONLAKE(dev_priv))
-		cnl_ddi_vswing_sequence(encoder, crtc_state, level);
 	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		bxt_ddi_vswing_sequence(encoder, crtc_state, level);
 	else
@@ -3204,12 +3159,6 @@ static void intel_disable_ddi_dp(struct intel_atomic_state *state,
 
 	intel_dp->link_trained = false;
 
-	if (old_crtc_state->has_audio)
-		intel_audio_codec_disable(encoder,
-					  old_crtc_state, old_conn_state);
-
-	intel_edp_drrs_disable(intel_dp, old_crtc_state);
-	intel_psr_disable(intel_dp, old_crtc_state);
 	intel_edp_backlight_off(old_conn_state);
 	/* Disable the decompression in DP Sink */
 	intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state,
@@ -3227,10 +3176,6 @@ static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	struct drm_connector *connector = old_conn_state->connector;
 
-	if (old_crtc_state->has_audio)
-		intel_audio_codec_disable(encoder,
-					  old_crtc_state, old_conn_state);
-
 	if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
 					       false, false))
 		drm_dbg_kms(&i915->drm,
@@ -3238,6 +3183,25 @@ static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
 			    connector->base.id, connector->name);
 }
 
+static void intel_pre_disable_ddi(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp;
+
+	if (old_crtc_state->has_audio)
+		intel_audio_codec_disable(encoder, old_crtc_state,
+					  old_conn_state);
+
+	if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
+		return;
+
+	intel_dp = enc_to_intel_dp(encoder);
+	intel_edp_drrs_disable(intel_dp, old_crtc_state);
+	intel_psr_disable(intel_dp, old_crtc_state);
+}
+
 static void intel_disable_ddi(struct intel_atomic_state *state,
 			      struct intel_encoder *encoder,
 			      const struct intel_crtc_state *old_crtc_state,
@@ -3454,7 +3418,7 @@ static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
 	if (cpu_transcoder == TRANSCODER_EDP)
 		return false;
 
-	if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO))
+	if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO_MMIO))
 		return false;
 
 	return intel_de_read(dev_priv, HSW_AUD_PIN_ELD_CP_VLD) &
@@ -3470,8 +3434,6 @@ void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
 		crtc_state->min_voltage_level = 3;
 	else if (DISPLAY_VER(dev_priv) >= 11 && crtc_state->port_clock > 594000)
 		crtc_state->min_voltage_level = 1;
-	else if (IS_CANNONLAKE(dev_priv) && crtc_state->port_clock > 594000)
-		crtc_state->min_voltage_level = 2;
 }
 
 static enum transcoder bdw_transcoder_master_readout(struct drm_i915_private *dev_priv,
@@ -3745,6 +3707,15 @@ void intel_ddi_get_clock(struct intel_encoder *encoder,
 						     &crtc_state->dpll_hw_state);
 }
 
+static void dg2_ddi_get_config(struct intel_encoder *encoder,
+				struct intel_crtc_state *crtc_state)
+{
+	intel_mpllb_readout_hw_state(encoder, &crtc_state->mpllb_state);
+	crtc_state->port_clock = intel_mpllb_calc_port_clock(encoder, &crtc_state->mpllb_state);
+
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
 static void adls_ddi_get_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state)
 {
@@ -3812,13 +3783,6 @@ static void icl_ddi_tc_get_config(struct intel_encoder *encoder,
 	intel_ddi_get_config(encoder, crtc_state);
 }
 
-static void cnl_ddi_get_config(struct intel_encoder *encoder,
-			       struct intel_crtc_state *crtc_state)
-{
-	intel_ddi_get_clock(encoder, crtc_state, cnl_ddi_get_pll(encoder));
-	intel_ddi_get_config(encoder, crtc_state);
-}
-
 static void bxt_ddi_get_config(struct intel_encoder *encoder,
 			       struct intel_crtc_state *crtc_state)
 {
@@ -4065,12 +4029,12 @@ intel_ddi_init_dp_connector(struct intel_digital_port *dig_port)
 	dig_port->dp.set_link_train = intel_ddi_set_link_train;
 	dig_port->dp.set_idle_link_train = intel_ddi_set_idle_link_train;
 
-	if (DISPLAY_VER(dev_priv) >= 12)
+	if (IS_DG2(dev_priv))
+		dig_port->dp.set_signal_levels = dg2_set_signal_levels;
+	else if (DISPLAY_VER(dev_priv) >= 12)
 		dig_port->dp.set_signal_levels = tgl_set_signal_levels;
 	else if (DISPLAY_VER(dev_priv) >= 11)
 		dig_port->dp.set_signal_levels = icl_set_signal_levels;
-	else if (IS_CANNONLAKE(dev_priv))
-		dig_port->dp.set_signal_levels = cnl_set_signal_levels;
 	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		dig_port->dp.set_signal_levels = bxt_set_signal_levels;
 	else
@@ -4317,15 +4281,6 @@ static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port)
 	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		return true;
 
-	/* Cannonlake: Most of SKUs don't support DDI_E, and the only
-	 *             one who does also have a full A/E split called
-	 *             DDI_F what makes DDI_E useless. However for this
-	 *             case let's trust VBT info.
-	 */
-	if (IS_CANNONLAKE(dev_priv) &&
-	    !intel_bios_is_port_present(dev_priv, PORT_E))
-		return true;
-
 	return false;
 }
 
@@ -4430,15 +4385,6 @@ static enum hpd_pin ehl_hpd_pin(struct drm_i915_private *dev_priv,
 	return HPD_PORT_A + port - PORT_A;
 }
 
-static enum hpd_pin cnl_hpd_pin(struct drm_i915_private *dev_priv,
-				enum port port)
-{
-	if (port == PORT_F)
-		return HPD_PORT_E;
-
-	return HPD_PORT_A + port - PORT_A;
-}
-
 static enum hpd_pin skl_hpd_pin(struct drm_i915_private *dev_priv, enum port port)
 {
 	if (HAS_PCH_TGP(dev_priv))
@@ -4590,6 +4536,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	encoder->enable = intel_enable_ddi;
 	encoder->pre_pll_enable = intel_ddi_pre_pll_enable;
 	encoder->pre_enable = intel_ddi_pre_enable;
+	encoder->pre_disable = intel_pre_disable_ddi;
 	encoder->disable = intel_disable_ddi;
 	encoder->post_disable = intel_ddi_post_disable;
 	encoder->update_pipe = intel_ddi_update_pipe;
@@ -4606,7 +4553,11 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	encoder->cloneable = 0;
 	encoder->pipe_mask = ~0;
 
-	if (IS_ALDERLAKE_S(dev_priv)) {
+	if (IS_DG2(dev_priv)) {
+		encoder->enable_clock = intel_mpllb_enable;
+		encoder->disable_clock = intel_mpllb_disable;
+		encoder->get_config = dg2_ddi_get_config;
+	} else if (IS_ALDERLAKE_S(dev_priv)) {
 		encoder->enable_clock = adls_ddi_enable_clock;
 		encoder->disable_clock = adls_ddi_disable_clock;
 		encoder->is_clock_enabled = adls_ddi_is_clock_enabled;
@@ -4645,11 +4596,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 			encoder->is_clock_enabled = icl_ddi_combo_is_clock_enabled;
 			encoder->get_config = icl_ddi_combo_get_config;
 		}
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		encoder->enable_clock = cnl_ddi_enable_clock;
-		encoder->disable_clock = cnl_ddi_disable_clock;
-		encoder->is_clock_enabled = cnl_ddi_is_clock_enabled;
-		encoder->get_config = cnl_ddi_get_config;
 	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
 		/* BXT/GLK have fixed PLL->port mapping */
 		encoder->get_config = bxt_ddi_get_config;
@@ -4679,8 +4625,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 		encoder->hpd_pin = ehl_hpd_pin(dev_priv, port);
 	else if (DISPLAY_VER(dev_priv) == 11)
 		encoder->hpd_pin = icl_hpd_pin(dev_priv, port);
-	else if (IS_CANNONLAKE(dev_priv))
-		encoder->hpd_pin = cnl_hpd_pin(dev_priv, port);
 	else if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv))
 		encoder->hpd_pin = skl_hpd_pin(dev_priv, port);
 	else
@@ -4723,12 +4667,8 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 
 		dig_port->hpd_pulse = intel_dp_hpd_pulse;
 
-		/* Splitter enable for eDP MSO is limited to certain pipes. */
-		if (dig_port->dp.mso_link_count) {
-			encoder->pipe_mask = BIT(PIPE_A);
-			if (IS_ALDERLAKE_P(dev_priv))
-				encoder->pipe_mask |= BIT(PIPE_B);
-		}
+		if (dig_port->dp.mso_link_count)
+			encoder->pipe_mask = intel_ddi_splitter_pipe_mask(dev_priv);
 	}
 
 	/* In theory we don't need the encoder->type check, but leave it just in