1 files changed, 180 insertions, 134 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 14a3cf0b7213..f30db8f2425e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -344,7 +344,7 @@ vlv_power_sequencer_kick(struct intel_dp *intel_dp)
 	DP |= DP_PORT_WIDTH(1);
 	DP |= DP_LINK_TRAIN_PAT_1;
 
-	if (IS_CHERRYVIEW(dev))
+	if (IS_CHERRYVIEW(dev_priv))
 		DP |= DP_PIPE_SELECT_CHV(pipe);
 	else if (pipe == PIPE_B)
 		DP |= DP_PIPEB_SELECT;
@@ -356,10 +356,10 @@ vlv_power_sequencer_kick(struct intel_dp *intel_dp)
 	 * So enable temporarily it if it's not already enabled.
 	 */
 	if (!pll_enabled) {
-		release_cl_override = IS_CHERRYVIEW(dev) &&
+		release_cl_override = IS_CHERRYVIEW(dev_priv) &&
 			!chv_phy_powergate_ch(dev_priv, phy, ch, true);
 
-		if (vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ?
+		if (vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev_priv) ?
 				     &chv_dpll[0].dpll : &vlv_dpll[0].dpll)) {
 			DRM_ERROR("Failed to force on pll for pipe %c!\n",
 				  pipe_name(pipe));
@@ -570,8 +570,8 @@ void intel_power_sequencer_reset(struct drm_i915_private *dev_priv)
 	struct drm_device *dev = &dev_priv->drm;
 	struct intel_encoder *encoder;
 
-	if (WARN_ON(!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) &&
-		    !IS_BROXTON(dev)))
+	if (WARN_ON(!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
+		    !IS_BROXTON(dev_priv)))
 		return;
 
 	/*
@@ -591,7 +591,7 @@ void intel_power_sequencer_reset(struct drm_i915_private *dev_priv)
 			continue;
 
 		intel_dp = enc_to_intel_dp(&encoder->base);
-		if (IS_BROXTON(dev))
+		if (IS_BROXTON(dev_priv))
 			intel_dp->pps_reset = true;
 		else
 			intel_dp->pps_pipe = INVALID_PIPE;
@@ -664,7 +664,7 @@ static int edp_notify_handler(struct notifier_block *this, unsigned long code,
 
 	pps_lock(intel_dp);
 
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
 		i915_reg_t pp_ctrl_reg, pp_div_reg;
 		u32 pp_div;
@@ -692,7 +692,7 @@ static bool edp_have_panel_power(struct intel_dp *intel_dp)
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
-	if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
 	    intel_dp->pps_pipe == INVALID_PIPE)
 		return false;
 
@@ -706,7 +706,7 @@ static bool edp_have_panel_vdd(struct intel_dp *intel_dp)
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
-	if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
 	    intel_dp->pps_pipe == INVALID_PIPE)
 		return false;
 
@@ -821,15 +821,16 @@ static uint32_t g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
 				     uint32_t aux_clock_divider)
 {
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv =
+			to_i915(intel_dig_port->base.base.dev);
 	uint32_t precharge, timeout;
 
-	if (IS_GEN6(dev))
+	if (IS_GEN6(dev_priv))
 		precharge = 3;
 	else
 		precharge = 5;
 
-	if (IS_BROADWELL(dev) && intel_dig_port->port == PORT_A)
+	if (IS_BROADWELL(dev_priv) && intel_dig_port->port == PORT_A)
 		timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
 	else
 		timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
@@ -1108,8 +1109,46 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
 	return ret;
 }
 
+static enum port intel_aux_port(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	const struct ddi_vbt_port_info *info =
+		&dev_priv->vbt.ddi_port_info[port];
+	enum port aux_port;
+
+	if (!info->alternate_aux_channel) {
+		DRM_DEBUG_KMS("using AUX %c for port %c (platform default)\n",
+			      port_name(port), port_name(port));
+		return port;
+	}
+
+	switch (info->alternate_aux_channel) {
+	case DP_AUX_A:
+		aux_port = PORT_A;
+		break;
+	case DP_AUX_B:
+		aux_port = PORT_B;
+		break;
+	case DP_AUX_C:
+		aux_port = PORT_C;
+		break;
+	case DP_AUX_D:
+		aux_port = PORT_D;
+		break;
+	default:
+		MISSING_CASE(info->alternate_aux_channel);
+		aux_port = PORT_A;
+		break;
+	}
+
+	DRM_DEBUG_KMS("using AUX %c for port %c (VBT)\n",
+		      port_name(aux_port), port_name(port));
+
+	return aux_port;
+}
+
 static i915_reg_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv,
-				       enum port port)
+				  enum port port)
 {
 	switch (port) {
 	case PORT_B:
@@ -1123,7 +1162,7 @@ static i915_reg_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t g4x_aux_data_reg(struct drm_i915_private *dev_priv,
-					enum port port, int index)
+				   enum port port, int index)
 {
 	switch (port) {
 	case PORT_B:
@@ -1137,7 +1176,7 @@ static i915_reg_t g4x_aux_data_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t ilk_aux_ctl_reg(struct drm_i915_private *dev_priv,
-				       enum port port)
+				  enum port port)
 {
 	switch (port) {
 	case PORT_A:
@@ -1153,7 +1192,7 @@ static i915_reg_t ilk_aux_ctl_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t ilk_aux_data_reg(struct drm_i915_private *dev_priv,
-					enum port port, int index)
+				   enum port port, int index)
 {
 	switch (port) {
 	case PORT_A:
@@ -1168,36 +1207,9 @@ static i915_reg_t ilk_aux_data_reg(struct drm_i915_private *dev_priv,
 	}
 }
 
-/*
- * On SKL we don't have Aux for port E so we rely
- * on VBT to set a proper alternate aux channel.
- */
-static enum port skl_porte_aux_port(struct drm_i915_private *dev_priv)
-{
-	const struct ddi_vbt_port_info *info =
-		&dev_priv->vbt.ddi_port_info[PORT_E];
-
-	switch (info->alternate_aux_channel) {
-	case DP_AUX_A:
-		return PORT_A;
-	case DP_AUX_B:
-		return PORT_B;
-	case DP_AUX_C:
-		return PORT_C;
-	case DP_AUX_D:
-		return PORT_D;
-	default:
-		MISSING_CASE(info->alternate_aux_channel);
-		return PORT_A;
-	}
-}
-
 static i915_reg_t skl_aux_ctl_reg(struct drm_i915_private *dev_priv,
-				       enum port port)
+				  enum port port)
 {
-	if (port == PORT_E)
-		port = skl_porte_aux_port(dev_priv);
-
 	switch (port) {
 	case PORT_A:
 	case PORT_B:
@@ -1211,11 +1223,8 @@ static i915_reg_t skl_aux_ctl_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t skl_aux_data_reg(struct drm_i915_private *dev_priv,
-					enum port port, int index)
+				   enum port port, int index)
 {
-	if (port == PORT_E)
-		port = skl_porte_aux_port(dev_priv);
-
 	switch (port) {
 	case PORT_A:
 	case PORT_B:
@@ -1229,7 +1238,7 @@ static i915_reg_t skl_aux_data_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t intel_aux_ctl_reg(struct drm_i915_private *dev_priv,
-					 enum port port)
+				    enum port port)
 {
 	if (INTEL_INFO(dev_priv)->gen >= 9)
 		return skl_aux_ctl_reg(dev_priv, port);
@@ -1240,7 +1249,7 @@ static i915_reg_t intel_aux_ctl_reg(struct drm_i915_private *dev_priv,
 }
 
 static i915_reg_t intel_aux_data_reg(struct drm_i915_private *dev_priv,
-					  enum port port, int index)
+				     enum port port, int index)
 {
 	if (INTEL_INFO(dev_priv)->gen >= 9)
 		return skl_aux_data_reg(dev_priv, port, index);
@@ -1253,7 +1262,8 @@ static i915_reg_t intel_aux_data_reg(struct drm_i915_private *dev_priv,
 static void intel_aux_reg_init(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
-	enum port port = dp_to_dig_port(intel_dp)->port;
+	enum port port = intel_aux_port(dev_priv,
+					dp_to_dig_port(intel_dp)->port);
 	int i;
 
 	intel_dp->aux_ch_ctl_reg = intel_aux_ctl_reg(dev_priv, port);
@@ -1297,14 +1307,10 @@ intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates)
 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
-
-	/* WaDisableHBR2:skl */
-	if (IS_SKL_REVID(dev, 0, SKL_REVID_B0))
-		return false;
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
 
-	if ((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || IS_BROADWELL(dev) ||
-	    (INTEL_INFO(dev)->gen >= 9))
+	if ((IS_HASWELL(dev_priv) && !IS_HSW_ULX(dev_priv)) ||
+	    IS_BROADWELL(dev_priv) || (INTEL_GEN(dev_priv) >= 9))
 		return true;
 	else
 		return false;
@@ -1314,13 +1320,13 @@ static int
 intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
 	int size;
 
-	if (IS_BROXTON(dev)) {
+	if (IS_BROXTON(dev_priv)) {
 		*source_rates = bxt_rates;
 		size = ARRAY_SIZE(bxt_rates);
-	} else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
+	} else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
 		*source_rates = skl_rates;
 		size = ARRAY_SIZE(skl_rates);
 	} else {
@@ -1340,19 +1346,20 @@ intel_dp_set_clock(struct intel_encoder *encoder,
 		   struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
 	const struct dp_link_dpll *divisor = NULL;
 	int i, count = 0;
 
-	if (IS_G4X(dev)) {
+	if (IS_G4X(dev_priv)) {
 		divisor = gen4_dpll;
 		count = ARRAY_SIZE(gen4_dpll);
-	} else if (HAS_PCH_SPLIT(dev)) {
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
 		divisor = pch_dpll;
 		count = ARRAY_SIZE(pch_dpll);
-	} else if (IS_CHERRYVIEW(dev)) {
+	} else if (IS_CHERRYVIEW(dev_priv)) {
 		divisor = chv_dpll;
 		count = ARRAY_SIZE(chv_dpll);
-	} else if (IS_VALLEYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev_priv)) {
 		divisor = vlv_dpll;
 		count = ARRAY_SIZE(vlv_dpll);
 	}
@@ -1569,7 +1576,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 
 	max_clock = common_len - 1;
 
-	if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A)
+	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && port != PORT_A)
 		pipe_config->has_pch_encoder = true;
 
 	pipe_config->has_drrs = false;
@@ -1586,7 +1593,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 				return ret;
 		}
 
-		if (HAS_GMCH_DISPLAY(dev))
+		if (HAS_GMCH_DISPLAY(dev_priv))
 			intel_gmch_panel_fitting(intel_crtc, pipe_config,
 						 intel_connector->panel.fitting_mode);
 		else
@@ -1711,7 +1718,7 @@ found:
 		to_intel_atomic_state(pipe_config->base.state)->cdclk_pll_vco = vco;
 	}
 
-	if (!HAS_DDI(dev))
+	if (!HAS_DDI(dev_priv))
 		intel_dp_set_clock(encoder, pipe_config);
 
 	return true;
@@ -1769,7 +1776,7 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 
 	/* Split out the IBX/CPU vs CPT settings */
 
-	if (IS_GEN7(dev) && port == PORT_A) {
+	if (IS_GEN7(dev_priv) && port == PORT_A) {
 		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 			intel_dp->DP |= DP_SYNC_HS_HIGH;
 		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
@@ -1780,7 +1787,7 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 			intel_dp->DP |= DP_ENHANCED_FRAMING;
 
 		intel_dp->DP |= crtc->pipe << 29;
-	} else if (HAS_PCH_CPT(dev) && port != PORT_A) {
+	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
 		u32 trans_dp;
 
 		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
@@ -1792,8 +1799,9 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 			trans_dp &= ~TRANS_DP_ENH_FRAMING;
 		I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp);
 	} else {
-		if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) &&
-		    !IS_CHERRYVIEW(dev) && pipe_config->limited_color_range)
+		if (!HAS_PCH_SPLIT(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
+		    !IS_CHERRYVIEW(dev_priv) &&
+		    pipe_config->limited_color_range)
 			intel_dp->DP |= DP_COLOR_RANGE_16_235;
 
 		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
@@ -1805,7 +1813,7 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
 			intel_dp->DP |= DP_ENHANCED_FRAMING;
 
-		if (IS_CHERRYVIEW(dev))
+		if (IS_CHERRYVIEW(dev_priv))
 			intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe);
 		else if (crtc->pipe == PIPE_B)
 			intel_dp->DP |= DP_PIPEB_SELECT;
@@ -2114,7 +2122,7 @@ static void edp_panel_on(struct intel_dp *intel_dp)
 
 	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
 	pp = ironlake_get_pp_control(intel_dp);
-	if (IS_GEN5(dev)) {
+	if (IS_GEN5(dev_priv)) {
 		/* ILK workaround: disable reset around power sequence */
 		pp &= ~PANEL_POWER_RESET;
 		I915_WRITE(pp_ctrl_reg, pp);
@@ -2122,7 +2130,7 @@ static void edp_panel_on(struct intel_dp *intel_dp)
 	}
 
 	pp |= PANEL_POWER_ON;
-	if (!IS_GEN5(dev))
+	if (!IS_GEN5(dev_priv))
 		pp |= PANEL_POWER_RESET;
 
 	I915_WRITE(pp_ctrl_reg, pp);
@@ -2131,7 +2139,7 @@ static void edp_panel_on(struct intel_dp *intel_dp)
 	wait_panel_on(intel_dp);
 	intel_dp->last_power_on = jiffies;
 
-	if (IS_GEN5(dev)) {
+	if (IS_GEN5(dev_priv)) {
 		pp |= PANEL_POWER_RESET; /* restore panel reset bit */
 		I915_WRITE(pp_ctrl_reg, pp);
 		POSTING_READ(pp_ctrl_reg);
@@ -2444,9 +2452,9 @@ static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
 	if (!(tmp & DP_PORT_EN))
 		goto out;
 
-	if (IS_GEN7(dev) && port == PORT_A) {
+	if (IS_GEN7(dev_priv) && port == PORT_A) {
 		*pipe = PORT_TO_PIPE_CPT(tmp);
-	} else if (HAS_PCH_CPT(dev) && port != PORT_A) {
+	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
 		enum pipe p;
 
 		for_each_pipe(dev_priv, p) {
@@ -2461,7 +2469,7 @@ static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
 
 		DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n",
 			      i915_mmio_reg_offset(intel_dp->output_reg));
-	} else if (IS_CHERRYVIEW(dev)) {
+	} else if (IS_CHERRYVIEW(dev_priv)) {
 		*pipe = DP_PORT_TO_PIPE_CHV(tmp);
 	} else {
 		*pipe = PORT_TO_PIPE(tmp);
@@ -2489,7 +2497,7 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
 
 	pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
 
-	if (HAS_PCH_CPT(dev) && port != PORT_A) {
+	if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
 		u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe));
 
 		if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
@@ -2515,8 +2523,8 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
 
 	pipe_config->base.adjusted_mode.flags |= flags;
 
-	if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) &&
-	    !IS_CHERRYVIEW(dev) && tmp & DP_COLOR_RANGE_16_235)
+	if (!HAS_PCH_SPLIT(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
+	    !IS_CHERRYVIEW(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
 		pipe_config->limited_color_range = true;
 
 	pipe_config->lane_count =
@@ -2636,7 +2644,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
 		DRM_DEBUG_KMS("Using DP training pattern TPS%d\n",
 			      dp_train_pat & DP_TRAINING_PATTERN_MASK);
 
-	if (HAS_DDI(dev)) {
+	if (HAS_DDI(dev_priv)) {
 		uint32_t temp = I915_READ(DP_TP_CTL(port));
 
 		if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE)
@@ -2662,8 +2670,8 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
 		}
 		I915_WRITE(DP_TP_CTL(port), temp);
 
-	} else if ((IS_GEN7(dev) && port == PORT_A) ||
-		   (HAS_PCH_CPT(dev) && port != PORT_A)) {
+	} else if ((IS_GEN7(dev_priv) && port == PORT_A) ||
+		   (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
 		*DP &= ~DP_LINK_TRAIN_MASK_CPT;
 
 		switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) {
@@ -2683,7 +2691,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
 		}
 
 	} else {
-		if (IS_CHERRYVIEW(dev))
+		if (IS_CHERRYVIEW(dev_priv))
 			*DP &= ~DP_LINK_TRAIN_MASK_CHV;
 		else
 			*DP &= ~DP_LINK_TRAIN_MASK;
@@ -2699,7 +2707,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
 			*DP |= DP_LINK_TRAIN_PAT_2;
 			break;
 		case DP_TRAINING_PATTERN_3:
-			if (IS_CHERRYVIEW(dev)) {
+			if (IS_CHERRYVIEW(dev_priv)) {
 				*DP |= DP_LINK_TRAIN_PAT_3_CHV;
 			} else {
 				DRM_DEBUG_KMS("TPS3 not supported, using TPS2 instead\n");
@@ -2749,7 +2757,7 @@ static void intel_enable_dp(struct intel_encoder *encoder,
 
 	pps_lock(intel_dp);
 
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		vlv_init_panel_power_sequencer(intel_dp);
 
 	intel_dp_enable_port(intel_dp, pipe_config);
@@ -2760,10 +2768,10 @@ static void intel_enable_dp(struct intel_encoder *encoder,
 
 	pps_unlock(intel_dp);
 
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		unsigned int lane_mask = 0x0;
 
-		if (IS_CHERRYVIEW(dev))
+		if (IS_CHERRYVIEW(dev_priv))
 			lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
 
 		vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
@@ -2983,17 +2991,17 @@ intel_dp_voltage_max(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	enum port port = dp_to_dig_port(intel_dp)->port;
 
-	if (IS_BROXTON(dev))
+	if (IS_BROXTON(dev_priv))
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
 	else if (INTEL_INFO(dev)->gen >= 9) {
 		if (dev_priv->vbt.edp.low_vswing && port == PORT_A)
 			return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
-	} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
-	else if (IS_GEN7(dev) && port == PORT_A)
+	else if (IS_GEN7(dev_priv) && port == PORT_A)
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
-	else if (HAS_PCH_CPT(dev) && port != PORT_A)
+	else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
 	else
 		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
@@ -3002,10 +3010,10 @@ intel_dp_voltage_max(struct intel_dp *intel_dp)
 uint8_t
 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
 {
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
 	enum port port = dp_to_dig_port(intel_dp)->port;
 
-	if (INTEL_INFO(dev)->gen >= 9) {
+	if (INTEL_GEN(dev_priv) >= 9) {
 		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
 		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
 			return DP_TRAIN_PRE_EMPH_LEVEL_3;
@@ -3018,7 +3026,7 @@ intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
 		default:
 			return DP_TRAIN_PRE_EMPH_LEVEL_0;
 		}
-	} else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+	} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
 		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
 		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
 			return DP_TRAIN_PRE_EMPH_LEVEL_3;
@@ -3030,7 +3038,7 @@ intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
 		default:
 			return DP_TRAIN_PRE_EMPH_LEVEL_0;
 		}
-	} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
 		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
 			return DP_TRAIN_PRE_EMPH_LEVEL_3;
@@ -3042,7 +3050,7 @@ intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
 		default:
 			return DP_TRAIN_PRE_EMPH_LEVEL_0;
 		}
-	} else if (IS_GEN7(dev) && port == PORT_A) {
+	} else if (IS_GEN7(dev_priv) && port == PORT_A) {
 		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
 		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
 			return DP_TRAIN_PRE_EMPH_LEVEL_2;
@@ -3343,21 +3351,21 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
 	uint32_t signal_levels, mask = 0;
 	uint8_t train_set = intel_dp->train_set[0];
 
-	if (HAS_DDI(dev)) {
+	if (HAS_DDI(dev_priv)) {
 		signal_levels = ddi_signal_levels(intel_dp);
 
-		if (IS_BROXTON(dev))
+		if (IS_BROXTON(dev_priv))
 			signal_levels = 0;
 		else
 			mask = DDI_BUF_EMP_MASK;
-	} else if (IS_CHERRYVIEW(dev)) {
+	} else if (IS_CHERRYVIEW(dev_priv)) {
 		signal_levels = chv_signal_levels(intel_dp);
-	} else if (IS_VALLEYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev_priv)) {
 		signal_levels = vlv_signal_levels(intel_dp);
-	} else if (IS_GEN7(dev) && port == PORT_A) {
+	} else if (IS_GEN7(dev_priv) && port == PORT_A) {
 		signal_levels = gen7_edp_signal_levels(train_set);
 		mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
-	} else if (IS_GEN6(dev) && port == PORT_A) {
+	} else if (IS_GEN6(dev_priv) && port == PORT_A) {
 		signal_levels = gen6_edp_signal_levels(train_set);
 		mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
 	} else {
@@ -3402,7 +3410,7 @@ void intel_dp_set_idle_link_train(struct intel_dp *intel_dp)
 	enum port port = intel_dig_port->port;
 	uint32_t val;
 
-	if (!HAS_DDI(dev))
+	if (!HAS_DDI(dev_priv))
 		return;
 
 	val = I915_READ(DP_TP_CTL(port));
@@ -3437,7 +3445,7 @@ intel_dp_link_down(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	uint32_t DP = intel_dp->DP;
 
-	if (WARN_ON(HAS_DDI(dev)))
+	if (WARN_ON(HAS_DDI(dev_priv)))
 		return;
 
 	if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0))
@@ -3445,12 +3453,12 @@ intel_dp_link_down(struct intel_dp *intel_dp)
 
 	DRM_DEBUG_KMS("\n");
 
-	if ((IS_GEN7(dev) && port == PORT_A) ||
-	    (HAS_PCH_CPT(dev) && port != PORT_A)) {
+	if ((IS_GEN7(dev_priv) && port == PORT_A) ||
+	    (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
 		DP &= ~DP_LINK_TRAIN_MASK_CPT;
 		DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
 	} else {
-		if (IS_CHERRYVIEW(dev))
+		if (IS_CHERRYVIEW(dev_priv))
 			DP &= ~DP_LINK_TRAIN_MASK_CHV;
 		else
 			DP &= ~DP_LINK_TRAIN_MASK;
@@ -3468,7 +3476,7 @@ intel_dp_link_down(struct intel_dp *intel_dp)
 	 * to transcoder A after disabling it to allow the
 	 * matching HDMI port to be enabled on transcoder A.
 	 */
-	if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B && port != PORT_A) {
+	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
 		/*
 		 * We get CPU/PCH FIFO underruns on the other pipe when
 		 * doing the workaround. Sweep them under the rug.
@@ -3551,8 +3559,8 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp)
 	/* Read the eDP Display control capabilities registers */
 	if ((intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) &&
 	    drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV,
-			     intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd) ==
-			     sizeof(intel_dp->edp_dpcd)))
+			     intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd)) ==
+			     sizeof(intel_dp->edp_dpcd))
 		DRM_DEBUG_KMS("EDP DPCD : %*ph\n", (int) sizeof(intel_dp->edp_dpcd),
 			      intel_dp->edp_dpcd);
 
@@ -3989,6 +3997,31 @@ go_again:
 }
 
 static void
+intel_dp_retrain_link(struct intel_dp *intel_dp)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
+
+	/* Suppress underruns caused by re-training */
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
+	if (crtc->config->has_pch_encoder)
+		intel_set_pch_fifo_underrun_reporting(dev_priv,
+						      intel_crtc_pch_transcoder(crtc), false);
+
+	intel_dp_start_link_train(intel_dp);
+	intel_dp_stop_link_train(intel_dp);
+
+	/* Keep underrun reporting disabled until things are stable */
+	intel_wait_for_vblank(&dev_priv->drm, crtc->pipe);
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
+	if (crtc->config->has_pch_encoder)
+		intel_set_pch_fifo_underrun_reporting(dev_priv,
+						      intel_crtc_pch_transcoder(crtc), true);
+}
+
+static void
 intel_dp_check_link_status(struct intel_dp *intel_dp)
 {
 	struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
@@ -4008,13 +4041,18 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
 	if (!to_intel_crtc(intel_encoder->base.crtc)->active)
 		return;
 
+	/* FIXME: we need to synchronize this sort of stuff with hardware
+	 * readout */
+	if (WARN_ON_ONCE(!intel_dp->lane_count))
+		return;
+
 	/* if link training is requested we should perform it always */
 	if ((intel_dp->compliance_test_type == DP_TEST_LINK_TRAINING) ||
 	    (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count))) {
 		DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n",
 			      intel_encoder->base.name);
-		intel_dp_start_link_train(intel_dp);
-		intel_dp_stop_link_train(intel_dp);
+
+		intel_dp_retrain_link(intel_dp);
 	}
 }
 
@@ -4756,11 +4794,16 @@ static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp)
 void intel_dp_encoder_reset(struct drm_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
+	struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
+	struct intel_dp *intel_dp = &intel_dig_port->dp;
 
 	if (!HAS_DDI(dev_priv))
 		intel_dp->DP = I915_READ(intel_dp->output_reg);
 
+	if (IS_GEN9(dev_priv) && lspcon->active)
+		lspcon_resume(lspcon);
+
 	if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP)
 		return;
 
@@ -5074,7 +5117,7 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
 		 (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT);
 	/* Compute the divisor for the pp clock, simply match the Bspec
 	 * formula. */
-	if (IS_BROXTON(dev)) {
+	if (IS_BROXTON(dev_priv)) {
 		pp_div = I915_READ(regs.pp_ctrl);
 		pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK;
 		pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000)
@@ -5087,9 +5130,9 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
 
 	/* Haswell doesn't have any port selection bits for the panel
 	 * power sequencer any more. */
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		port_sel = PANEL_PORT_SELECT_VLV(port);
-	} else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
+	} else if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
 		if (port == PORT_A)
 			port_sel = PANEL_PORT_SELECT_DPA;
 		else
@@ -5100,7 +5143,7 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
 
 	I915_WRITE(regs.pp_on, pp_on);
 	I915_WRITE(regs.pp_off, pp_off);
-	if (IS_BROXTON(dev))
+	if (IS_BROXTON(dev_priv))
 		I915_WRITE(regs.pp_ctrl, pp_div);
 	else
 		I915_WRITE(regs.pp_div, pp_div);
@@ -5108,7 +5151,7 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
 	DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n",
 		      I915_READ(regs.pp_on),
 		      I915_READ(regs.pp_off),
-		      IS_BROXTON(dev) ?
+		      IS_BROXTON(dev_priv) ?
 		      (I915_READ(regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK) :
 		      I915_READ(regs.pp_div));
 }
@@ -5116,7 +5159,9 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
 static void intel_dp_pps_init(struct drm_device *dev,
 			      struct intel_dp *intel_dp)
 {
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		vlv_initial_power_sequencer_setup(intel_dp);
 	} else {
 		intel_dp_init_panel_power_sequencer(dev, intel_dp);
@@ -5586,7 +5631,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 	}
 	mutex_unlock(&dev->mode_config.mutex);
 
-	if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		intel_dp->edp_notifier.notifier_call = edp_notify_handler;
 		register_reboot_notifier(&intel_dp->edp_notifier);
 
@@ -5595,7 +5640,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 		 * If the current pipe isn't valid, try the PPS pipe, and if that
 		 * fails just assume pipe A.
 		 */
-		if (IS_CHERRYVIEW(dev))
+		if (IS_CHERRYVIEW(dev_priv))
 			pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP);
 		else
 			pipe = PORT_TO_PIPE(intel_dp->DP);
@@ -5651,9 +5696,9 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	/* intel_dp vfuncs */
 	if (INTEL_INFO(dev)->gen >= 9)
 		intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider;
-	else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+	else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
 		intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider;
-	else if (HAS_PCH_SPLIT(dev))
+	else if (HAS_PCH_SPLIT(dev_priv))
 		intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider;
 	else
 		intel_dp->get_aux_clock_divider = g4x_get_aux_clock_divider;
@@ -5663,7 +5708,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	else
 		intel_dp->get_aux_send_ctl = g4x_get_aux_send_ctl;
 
-	if (HAS_DDI(dev))
+	if (HAS_DDI(dev_priv))
 		intel_dp->prepare_link_retrain = intel_ddi_prepare_link_retrain;
 
 	/* Preserve the current hw state. */
@@ -5684,7 +5729,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 		intel_encoder->type = INTEL_OUTPUT_EDP;
 
 	/* eDP only on port B and/or C on vlv/chv */
-	if (WARN_ON((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
+	if (WARN_ON((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
 		    is_edp(intel_dp) && port != PORT_B && port != PORT_C))
 		return false;
 
@@ -5705,7 +5750,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 
 	intel_connector_attach_encoder(intel_connector, intel_encoder);
 
-	if (HAS_DDI(dev))
+	if (HAS_DDI(dev_priv))
 		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
 	else
 		intel_connector->get_hw_state = intel_connector_get_hw_state;
@@ -5717,7 +5762,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 		break;
 	case PORT_B:
 		intel_encoder->hpd_pin = HPD_PORT_B;
-		if (IS_BXT_REVID(dev, 0, BXT_REVID_A1))
+		if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
 			intel_encoder->hpd_pin = HPD_PORT_A;
 		break;
 	case PORT_C:
@@ -5751,7 +5796,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	 * 0xd.  Failure to do so will result in spurious interrupts being
 	 * generated on the port when a cable is not attached.
 	 */
-	if (IS_G4X(dev) && !IS_GM45(dev)) {
+	if (IS_G4X(dev_priv) && !IS_GM45(dev_priv)) {
 		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
 		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
 	}
@@ -5794,13 +5839,13 @@ bool intel_dp_init(struct drm_device *dev,
 	intel_encoder->get_hw_state = intel_dp_get_hw_state;
 	intel_encoder->get_config = intel_dp_get_config;
 	intel_encoder->suspend = intel_dp_encoder_suspend;
-	if (IS_CHERRYVIEW(dev)) {
+	if (IS_CHERRYVIEW(dev_priv)) {
 		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
 		intel_encoder->pre_enable = chv_pre_enable_dp;
 		intel_encoder->enable = vlv_enable_dp;
 		intel_encoder->post_disable = chv_post_disable_dp;
 		intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
-	} else if (IS_VALLEYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev_priv)) {
 		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
 		intel_encoder->pre_enable = vlv_pre_enable_dp;
 		intel_encoder->enable = vlv_enable_dp;
@@ -5817,7 +5862,7 @@ bool intel_dp_init(struct drm_device *dev,
 	intel_dig_port->max_lanes = 4;
 
 	intel_encoder->type = INTEL_OUTPUT_DP;
-	if (IS_CHERRYVIEW(dev)) {
+	if (IS_CHERRYVIEW(dev_priv)) {
 		if (port == PORT_D)
 			intel_encoder->crtc_mask = 1 << 2;
 		else
@@ -5826,6 +5871,7 @@ bool intel_dp_init(struct drm_device *dev,
 		intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 	}
 	intel_encoder->cloneable = 0;
+	intel_encoder->port = port;
 
 	intel_dig_port->hpd_pulse = intel_dp_hpd_pulse;
 	dev_priv->hotplug.irq_port[port] = intel_dig_port;