diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index d24bdea6..b4dd6a5 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -162,6 +162,13 @@ static const u32 hpd_gen11[HPD_NUM_PINS] = {
 	[HPD_PORT_TC6] = GEN11_TC_HOTPLUG(HPD_PORT_TC6) | GEN11_TBT_HOTPLUG(HPD_PORT_TC6),
 };
 
+static const u32 hpd_xelpdp[HPD_NUM_PINS] = {
+	[HPD_PORT_TC1] = XELPDP_TBT_HOTPLUG(HPD_PORT_TC1) | XELPDP_DP_ALT_HOTPLUG(HPD_PORT_TC1),
+	[HPD_PORT_TC2] = XELPDP_TBT_HOTPLUG(HPD_PORT_TC2) | XELPDP_DP_ALT_HOTPLUG(HPD_PORT_TC2),
+	[HPD_PORT_TC3] = XELPDP_TBT_HOTPLUG(HPD_PORT_TC3) | XELPDP_DP_ALT_HOTPLUG(HPD_PORT_TC3),
+	[HPD_PORT_TC4] = XELPDP_TBT_HOTPLUG(HPD_PORT_TC4) | XELPDP_DP_ALT_HOTPLUG(HPD_PORT_TC4),
+};
+
 static const u32 hpd_icp[HPD_NUM_PINS] = {
 	[HPD_PORT_A] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_A),
 	[HPD_PORT_B] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_B),
@@ -182,6 +189,15 @@ static const u32 hpd_sde_dg1[HPD_NUM_PINS] = {
 	[HPD_PORT_TC1] = SDE_TC_HOTPLUG_DG2(HPD_PORT_TC1),
 };
 
+static const u32 hpd_mtp[HPD_NUM_PINS] = {
+	[HPD_PORT_A] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_A),
+	[HPD_PORT_B] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_B),
+	[HPD_PORT_TC1] = SDE_TC_HOTPLUG_ICP(HPD_PORT_TC1),
+	[HPD_PORT_TC2] = SDE_TC_HOTPLUG_ICP(HPD_PORT_TC2),
+	[HPD_PORT_TC3] = SDE_TC_HOTPLUG_ICP(HPD_PORT_TC3),
+	[HPD_PORT_TC4] = SDE_TC_HOTPLUG_ICP(HPD_PORT_TC4),
+};
+
 static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
 {
 	struct intel_hotplug *hpd = &dev_priv->display.hotplug;
@@ -195,7 +211,9 @@ static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
 		return;
 	}
 
-	if (DISPLAY_VER(dev_priv) >= 11)
+	if (DISPLAY_VER(dev_priv) >= 14)
+		hpd->hpd = hpd_xelpdp;
+	else if (DISPLAY_VER(dev_priv) >= 11)
 		hpd->hpd = hpd_gen11;
 	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		hpd->hpd = hpd_bxt;
@@ -214,6 +232,8 @@ static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
 
 	if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
 		hpd->pch_hpd = hpd_sde_dg1;
+	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_MTP)
+		hpd->pch_hpd = hpd_mtp;
 	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
 		hpd->pch_hpd = hpd_icp;
 	else if (HAS_PCH_CNP(dev_priv) || HAS_PCH_SPT(dev_priv))
@@ -1559,6 +1579,44 @@ static void cpt_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
 		cpt_serr_int_handler(dev_priv);
 }
 
+static void xelpdp_pica_irq_handler(struct drm_i915_private *i915, u32 iir)
+{
+	enum hpd_pin pin;
+	u32 hotplug_trigger = iir & (XELPDP_DP_ALT_HOTPLUG_MASK | XELPDP_TBT_HOTPLUG_MASK);
+	u32 trigger_aux = iir & XELPDP_AUX_TC_MASK;
+	u32 pin_mask = 0, long_mask = 0;
+
+	for (pin = HPD_PORT_TC1; pin <= HPD_PORT_TC4; pin++) {
+		u32 val;
+
+		if (!(i915->display.hotplug.hpd[pin] & hotplug_trigger))
+			continue;
+
+		pin_mask |= BIT(pin);
+
+		val = intel_de_read(i915, XELPDP_PORT_HOTPLUG_CTL(pin));
+		intel_de_write(i915, XELPDP_PORT_HOTPLUG_CTL(pin), val);
+
+		if (val & (XELPDP_DP_ALT_HPD_LONG_DETECT | XELPDP_TBT_HPD_LONG_DETECT))
+			long_mask |= BIT(pin);
+	}
+
+	if (pin_mask) {
+		drm_dbg(&i915->drm,
+			"pica hotplug event received, stat 0x%08x, pins 0x%08x, long 0x%08x\n",
+			hotplug_trigger, pin_mask, long_mask);
+
+		intel_hpd_irq_handler(i915, pin_mask, long_mask);
+	}
+
+	if (trigger_aux)
+		dp_aux_irq_handler(i915);
+
+	if (!pin_mask && !trigger_aux)
+		drm_err(&i915->drm,
+			"Unexpected DE HPD/AUX interrupt 0x%08x\n", iir);
+}
+
 static void icp_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
 {
 	u32 ddi_hotplug_trigger = pch_iir & SDE_DDI_HOTPLUG_MASK_ICP;
@@ -2029,6 +2087,34 @@ u32 gen8_de_pipe_underrun_mask(struct drm_i915_private *dev_priv)
 	return mask;
 }
 
+static void gen8_read_and_ack_pch_irqs(struct drm_i915_private *i915, u32 *pch_iir, u32 *pica_iir)
+{
+	u32 pica_ier = 0;
+
+	*pica_iir = 0;
+	*pch_iir = intel_de_read(i915, SDEIIR);
+	if (!*pch_iir)
+		return;
+
+	/**
+	 * PICA IER must be disabled/re-enabled around clearing PICA IIR and
+	 * SDEIIR, to avoid losing PICA IRQs and to ensure that such IRQs set
+	 * their flags both in the PICA and SDE IIR.
+	 */
+	if (*pch_iir & SDE_PICAINTERRUPT) {
+		drm_WARN_ON(&i915->drm, INTEL_PCH_TYPE(i915) < PCH_MTP);
+
+		pica_ier = intel_de_rmw(i915, PICAINTERRUPT_IER, ~0, 0);
+		*pica_iir = intel_de_read(i915, PICAINTERRUPT_IIR);
+		intel_de_write(i915, PICAINTERRUPT_IIR, *pica_iir);
+	}
+
+	intel_de_write(i915, SDEIIR, *pch_iir);
+
+	if (pica_ier)
+		intel_de_write(i915, PICAINTERRUPT_IER, pica_ier);
+}
+
 static irqreturn_t
 gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 {
@@ -2153,16 +2239,20 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 
 	if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv) &&
 	    master_ctl & GEN8_DE_PCH_IRQ) {
+		u32 pica_iir;
+
 		/*
 		 * FIXME(BDW): Assume for now that the new interrupt handling
 		 * scheme also closed the SDE interrupt handling race we've seen
 		 * on older pch-split platforms. But this needs testing.
 		 */
-		iir = intel_uncore_read(&dev_priv->uncore, SDEIIR);
+		gen8_read_and_ack_pch_irqs(dev_priv, &iir, &pica_iir);
 		if (iir) {
-			intel_uncore_write(&dev_priv->uncore, SDEIIR, iir);
 			ret = IRQ_HANDLED;
 
+			if (pica_iir)
+				xelpdp_pica_irq_handler(dev_priv, pica_iir);
+
 			if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
 				icp_irq_handler(dev_priv, iir);
 			else if (INTEL_PCH_TYPE(dev_priv) >= PCH_SPT)
@@ -2740,7 +2830,11 @@ static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
 
 	GEN3_IRQ_RESET(uncore, GEN8_DE_PORT_);
 	GEN3_IRQ_RESET(uncore, GEN8_DE_MISC_);
-	GEN3_IRQ_RESET(uncore, GEN11_DE_HPD_);
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		GEN3_IRQ_RESET(uncore, PICAINTERRUPT_);
+	else
+		GEN3_IRQ_RESET(uncore, GEN11_DE_HPD_);
 
 	if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
 		GEN3_IRQ_RESET(uncore, SDE);
@@ -3031,6 +3125,116 @@ static void gen11_hpd_irq_setup(struct drm_i915_private *dev_priv)
 		icp_hpd_irq_setup(dev_priv);
 }
 
+static u32 mtp_ddi_hotplug_enables(struct intel_encoder *encoder)
+{
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_A:
+	case HPD_PORT_B:
+		return SHOTPLUG_CTL_DDI_HPD_ENABLE(encoder->hpd_pin);
+	default:
+		return 0;
+	}
+}
+
+static u32 mtp_tc_hotplug_enables(struct intel_encoder *encoder)
+{
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_TC1:
+	case HPD_PORT_TC2:
+	case HPD_PORT_TC3:
+	case HPD_PORT_TC4:
+		return ICP_TC_HPD_ENABLE(encoder->hpd_pin);
+	default:
+		return 0;
+	}
+}
+
+static void mtp_ddi_hpd_detection_setup(struct drm_i915_private *i915)
+{
+	intel_de_rmw(i915, SHOTPLUG_CTL_DDI,
+		     (SHOTPLUG_CTL_DDI_HPD_ENABLE(HPD_PORT_A) |
+		      SHOTPLUG_CTL_DDI_HPD_ENABLE(HPD_PORT_B)),
+		     intel_hpd_hotplug_enables(i915, mtp_ddi_hotplug_enables));
+}
+
+static void mtp_tc_hpd_detection_setup(struct drm_i915_private *i915)
+{
+	intel_de_rmw(i915, SHOTPLUG_CTL_TC,
+		     (ICP_TC_HPD_ENABLE(HPD_PORT_TC1) |
+		      ICP_TC_HPD_ENABLE(HPD_PORT_TC2) |
+		      ICP_TC_HPD_ENABLE(HPD_PORT_TC3) |
+		      ICP_TC_HPD_ENABLE(HPD_PORT_TC4)),
+		     intel_hpd_hotplug_enables(i915, mtp_tc_hotplug_enables));
+}
+
+static void mtp_hpd_invert(struct drm_i915_private *i915)
+{
+	u32 val = (INVERT_DDIA_HPD |
+		   INVERT_DDIB_HPD |
+		   INVERT_DDIC_HPD |
+		   INVERT_TC1_HPD |
+		   INVERT_TC2_HPD |
+		   INVERT_TC3_HPD |
+		   INVERT_TC4_HPD |
+		   INVERT_DDID_HPD_MTP |
+		   INVERT_DDIE_HPD);
+	intel_de_rmw(i915, SOUTH_CHICKEN1, 0, val);
+}
+
+static void mtp_hpd_irq_setup(struct drm_i915_private *i915)
+{
+	u32 hotplug_irqs, enabled_irqs;
+
+	enabled_irqs = intel_hpd_enabled_irqs(i915, i915->display.hotplug.pch_hpd);
+	hotplug_irqs = intel_hpd_hotplug_irqs(i915, i915->display.hotplug.pch_hpd);
+
+	intel_de_write(i915, SHPD_FILTER_CNT, SHPD_FILTER_CNT_500_ADJ);
+
+	mtp_hpd_invert(i915);
+	ibx_display_interrupt_update(i915, hotplug_irqs, enabled_irqs);
+
+	mtp_ddi_hpd_detection_setup(i915);
+	mtp_tc_hpd_detection_setup(i915);
+}
+
+static void xelpdp_pica_hpd_detection_setup(struct drm_i915_private *i915)
+{
+	struct intel_encoder *encoder;
+	enum hpd_pin pin;
+	u32 available_pins = 0;
+
+	BUILD_BUG_ON(BITS_PER_TYPE(available_pins) < HPD_NUM_PINS);
+
+	for_each_intel_encoder(&i915->drm, encoder)
+		available_pins |= BIT(encoder->hpd_pin);
+
+	for (pin = HPD_PORT_TC1; pin <= HPD_PORT_TC4; pin++) {
+		u32 mask = XELPDP_TBT_HOTPLUG_ENABLE |
+			   XELPDP_DP_ALT_HOTPLUG_ENABLE;
+
+		intel_de_rmw(i915, XELPDP_PORT_HOTPLUG_CTL(pin),
+			     mask,
+			     available_pins & BIT(pin) ?  mask : 0);
+	}
+}
+
+static void xelpdp_hpd_irq_setup(struct drm_i915_private *i915)
+{
+	u32 hotplug_irqs, enabled_irqs;
+
+	enabled_irqs = intel_hpd_enabled_irqs(i915, i915->display.hotplug.hpd);
+	hotplug_irqs = intel_hpd_hotplug_irqs(i915, i915->display.hotplug.hpd);
+
+	intel_de_rmw(i915, PICAINTERRUPT_IMR, hotplug_irqs,
+		     ~enabled_irqs & hotplug_irqs);
+	intel_uncore_posting_read(&i915->uncore, PICAINTERRUPT_IMR);
+
+	xelpdp_pica_hpd_detection_setup(i915);
+
+	if (INTEL_PCH_TYPE(i915) >= PCH_MTP)
+		mtp_hpd_irq_setup(i915);
+}
+
 static u32 spt_hotplug_enables(struct intel_encoder *encoder)
 {
 	switch (encoder->hpd_pin) {
@@ -3363,7 +3567,7 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 	GEN3_IRQ_INIT(uncore, GEN8_DE_PORT_, ~de_port_masked, de_port_enables);
 	GEN3_IRQ_INIT(uncore, GEN8_DE_MISC_, ~de_misc_masked, de_misc_masked);
 
-	if (DISPLAY_VER(dev_priv) >= 11) {
+	if (IS_DISPLAY_VER(dev_priv, 11, 13)) {
 		u32 de_hpd_masked = 0;
 		u32 de_hpd_enables = GEN11_DE_TC_HOTPLUG_MASK |
 				     GEN11_DE_TBT_HOTPLUG_MASK;
@@ -3373,6 +3577,20 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 	}
 }
 
+static void mtp_irq_postinstall(struct drm_i915_private *i915)
+{
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 sde_mask = SDE_GMBUS_ICP | SDE_PICAINTERRUPT;
+	u32 de_hpd_mask = XELPDP_AUX_TC_MASK;
+	u32 de_hpd_enables = de_hpd_mask | XELPDP_DP_ALT_HOTPLUG_MASK |
+			     XELPDP_TBT_HOTPLUG_MASK;
+
+	GEN3_IRQ_INIT(uncore, PICAINTERRUPT_, ~de_hpd_mask,
+		      de_hpd_enables);
+
+	GEN3_IRQ_INIT(uncore, SDE, ~sde_mask, 0xffffffff);
+}
+
 static void icp_irq_postinstall(struct drm_i915_private *dev_priv)
 {
 	struct intel_uncore *uncore = &dev_priv->uncore;
@@ -3434,7 +3652,11 @@ static void dg1_irq_postinstall(struct drm_i915_private *dev_priv)
 	GEN3_IRQ_INIT(uncore, GEN11_GU_MISC_, ~gu_misc_masked, gu_misc_masked);
 
 	if (HAS_DISPLAY(dev_priv)) {
-		icp_irq_postinstall(dev_priv);
+		if (DISPLAY_VER(dev_priv) >= 14)
+			mtp_irq_postinstall(dev_priv);
+		else
+			icp_irq_postinstall(dev_priv);
+
 		gen8_de_irq_postinstall(dev_priv);
 		intel_uncore_write(&dev_priv->uncore, GEN11_DISPLAY_INT_CTL,
 				   GEN11_DISPLAY_IRQ_ENABLE);
@@ -3920,6 +4142,7 @@ static const struct intel_hotplug_funcs platform##_hpd_funcs = { \
 }
 
 HPD_FUNCS(i915);
+HPD_FUNCS(xelpdp);
 HPD_FUNCS(dg1);
 HPD_FUNCS(gen11);
 HPD_FUNCS(bxt);
@@ -3980,6 +4203,8 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 			dev_priv->display.funcs.hotplug = &icp_hpd_funcs;
 		else if (HAS_PCH_DG1(dev_priv))
 			dev_priv->display.funcs.hotplug = &dg1_hpd_funcs;
+		else if (DISPLAY_VER(dev_priv) >= 14)
+			dev_priv->display.funcs.hotplug = &xelpdp_hpd_funcs;
 		else if (DISPLAY_VER(dev_priv) >= 11)
 			dev_priv->display.funcs.hotplug = &gen11_hpd_funcs;
 		else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 9245572..de95e81 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4477,6 +4477,28 @@
 #define  GEN11_HOTPLUG_CTL_SHORT_DETECT(hpd_pin)	(1 << (_HPD_PIN_TC(hpd_pin) * 4))
 #define  GEN11_HOTPLUG_CTL_NO_DETECT(hpd_pin)		(0 << (_HPD_PIN_TC(hpd_pin) * 4))
 
+#define PICAINTERRUPT_ISR			_MMIO(0x16FE50)
+#define PICAINTERRUPT_IMR			_MMIO(0x16FE54)
+#define PICAINTERRUPT_IIR			_MMIO(0x16FE58)
+#define PICAINTERRUPT_IER			_MMIO(0x16FE5C)
+
+#define  XELPDP_DP_ALT_HOTPLUG(hpd_pin)		REG_BIT(16 + _HPD_PIN_TC(hpd_pin))
+#define  XELPDP_DP_ALT_HOTPLUG_MASK		REG_GENMASK(19, 16)
+
+#define  XELPDP_AUX_TC(hpd_pin)			REG_BIT(8 + _HPD_PIN_TC(hpd_pin))
+#define  XELPDP_AUX_TC_MASK			REG_GENMASK(11, 8)
+
+#define  XELPDP_TBT_HOTPLUG(hpd_pin)		REG_BIT(_HPD_PIN_TC(hpd_pin))
+#define  XELPDP_TBT_HOTPLUG_MASK		REG_GENMASK(3, 0)
+
+#define XELPDP_PORT_HOTPLUG_CTL(hpd_pin)	_MMIO(0x16F270 + (_HPD_PIN_TC(hpd_pin) * 0x200))
+#define  XELPDP_TBT_HOTPLUG_ENABLE		REG_BIT(6)
+#define  XELPDP_TBT_HPD_LONG_DETECT		REG_BIT(5)
+#define  XELPDP_TBT_HPD_SHORT_DETECT		REG_BIT(4)
+#define  XELPDP_DP_ALT_HOTPLUG_ENABLE		REG_BIT(2)
+#define  XELPDP_DP_ALT_HPD_LONG_DETECT		REG_BIT(1)
+#define  XELPDP_DP_ALT_HPD_SHORT_DETECT		REG_BIT(0)
+
 #define ILK_DISPLAY_CHICKEN2	_MMIO(0x42004)
 /* Required on all Ironlake and Sandybridge according to the B-Spec. */
 #define  ILK_ELPIN_409_SELECT	(1 << 25)
@@ -4762,7 +4784,8 @@
 				 SDE_FDI_RXB_CPT | \
 				 SDE_FDI_RXA_CPT)
 
-/* south display engine interrupt: ICP/TGP */
+/* south display engine interrupt: ICP/TGP/MTP */
+#define SDE_PICAINTERRUPT		REG_BIT(31)
 #define SDE_GMBUS_ICP			(1 << 23)
 #define SDE_TC_HOTPLUG_ICP(hpd_pin)	REG_BIT(24 + _HPD_PIN_TC(hpd_pin))
 #define SDE_TC_HOTPLUG_DG2(hpd_pin)	REG_BIT(25 + _HPD_PIN_TC(hpd_pin)) /* sigh */
@@ -5116,6 +5139,12 @@
 #define SOUTH_CHICKEN1		_MMIO(0xc2000)
 #define  FDIA_PHASE_SYNC_SHIFT_OVR	19
 #define  FDIA_PHASE_SYNC_SHIFT_EN	18
+#define  INVERT_DDIE_HPD			REG_BIT(28)
+#define  INVERT_DDID_HPD_MTP			REG_BIT(27)
+#define  INVERT_TC4_HPD				REG_BIT(26)
+#define  INVERT_TC3_HPD				REG_BIT(25)
+#define  INVERT_TC2_HPD				REG_BIT(24)
+#define  INVERT_TC1_HPD				REG_BIT(23)
 #define  INVERT_DDID_HPD			(1 << 18)
 #define  INVERT_DDIC_HPD			(1 << 17)
 #define  INVERT_DDIB_HPD			(1 << 16)