diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c
index e4021e13af40..1a575858a36f 100644
--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -83,10 +83,48 @@ enum {
 #define PMC_USB_DP_HPD_LVL		BIT(4)
 #define PMC_USB_DP_HPD_IRQ		BIT(5)
 
+/*
+ * Input Output Manager (IOM) PORT STATUS
+ */
+#define IOM_PORT_STATUS_OFFSET				0x560
+
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_MASK		GENMASK(9, 6)
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_SHIFT		6
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_USB		0x03
+/* activity type: Safe Mode */
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_SAFE_MODE		0x04
+/* activity type: Display Port */
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_DP		0x05
+/* activity type: Display Port Multi Function Device */
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_DP_MFD		0x06
+/* activity type: Thunderbolt */
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_TBT		0x07
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_ALT_MODE_USB	0x0c
+#define IOM_PORT_STATUS_ACTIVITY_TYPE_ALT_MODE_TBT_USB	0x0d
+/* Upstream Facing Port Information */
+#define IOM_PORT_STATUS_UFP				BIT(10)
+/* Display Port Hot Plug Detect status */
+#define IOM_PORT_STATUS_DHPD_HPD_STATUS_MASK		GENMASK(13, 12)
+#define IOM_PORT_STATUS_DHPD_HPD_STATUS_SHIFT		12
+#define IOM_PORT_STATUS_DHPD_HPD_STATUS_ASSERT		0x01
+#define IOM_PORT_STATUS_DHPD_HPD_SOURCE_TBT		BIT(14)
+#define IOM_PORT_STATUS_CONNECTED			BIT(31)
+
+#define IOM_PORT_ACTIVITY_IS(_status_, _type_)				\
+	((((_status_) & IOM_PORT_STATUS_ACTIVITY_TYPE_MASK) >>		\
+	  IOM_PORT_STATUS_ACTIVITY_TYPE_SHIFT) ==			\
+	 (IOM_PORT_STATUS_ACTIVITY_TYPE_##_type_))
+
+#define IOM_PORT_HPD_ASSERTED(_status_)					\
+	((((_status_) & IOM_PORT_STATUS_DHPD_HPD_STATUS_MASK) >>	\
+	  IOM_PORT_STATUS_DHPD_HPD_STATUS_SHIFT) &			\
+	 IOM_PORT_STATUS_DHPD_HPD_STATUS_ASSERT)
+
 struct pmc_usb;
 
 struct pmc_usb_port {
 	int num;
+	u32 iom_status;
 	struct pmc_usb *pmc;
 	struct typec_mux *typec_mux;
 	struct typec_switch *typec_sw;
@@ -107,8 +145,16 @@ struct pmc_usb {
 	struct device *dev;
 	struct intel_scu_ipc_dev *ipc;
 	struct pmc_usb_port *port;
+	struct acpi_device *iom_adev;
+	void __iomem *iom_base;
 };
 
+static void update_port_status(struct pmc_usb_port *port)
+{
+	port->iom_status = readl(port->pmc->iom_base + IOM_PORT_STATUS_OFFSET +
+				 port->usb3_port * sizeof(u32));
+}
+
 static int sbu_orientation(struct pmc_usb_port *port)
 {
 	if (port->sbu_orientation)
@@ -145,18 +191,17 @@ static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len)
 }
 
 static int
-pmc_usb_mux_dp_hpd(struct pmc_usb_port *port, struct typec_mux_state *state)
+pmc_usb_mux_dp_hpd(struct pmc_usb_port *port, struct typec_displayport_data *dp)
 {
-	struct typec_displayport_data *data = state->data;
 	u8 msg[2] = { };
 
 	msg[0] = PMC_USB_DP_HPD;
 	msg[0] |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 
-	if (data->status & DP_STATUS_IRQ_HPD)
+	if (dp->status & DP_STATUS_IRQ_HPD)
 		msg[1] = PMC_USB_DP_HPD_IRQ;
 
-	if (data->status & DP_STATUS_HPD_STATE)
+	if (dp->status & DP_STATUS_HPD_STATE)
 		msg[1] |= PMC_USB_DP_HPD_LVL;
 
 	return pmc_usb_command(port, msg, sizeof(msg));
@@ -169,8 +214,18 @@ pmc_usb_mux_dp(struct pmc_usb_port *port, struct typec_mux_state *state)
 	struct altmode_req req = { };
 	int ret;
 
+	if (IOM_PORT_ACTIVITY_IS(port->iom_status, DP) ||
+	    IOM_PORT_ACTIVITY_IS(port->iom_status, DP_MFD)) {
+		if (IOM_PORT_HPD_ASSERTED(port->iom_status) &&
+		    (!(data->status & DP_STATUS_IRQ_HPD) &&
+		     data->status & DP_STATUS_HPD_STATE))
+			return 0;
+
+		return pmc_usb_mux_dp_hpd(port, state->data);
+	}
+
 	if (data->status & DP_STATUS_IRQ_HPD)
-		return pmc_usb_mux_dp_hpd(port, state);
+		return pmc_usb_mux_dp_hpd(port, state->data);
 
 	req.usage = PMC_USB_ALT_MODE;
 	req.usage |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
@@ -192,8 +247,8 @@ pmc_usb_mux_dp(struct pmc_usb_port *port, struct typec_mux_state *state)
 	if (ret)
 		return ret;
 
-	if (data->status & DP_STATUS_HPD_STATE)
-		return pmc_usb_mux_dp_hpd(port, state);
+	if (data->status & (DP_STATUS_IRQ_HPD | DP_STATUS_HPD_STATE))
+		return pmc_usb_mux_dp_hpd(port, state->data);
 
 	return 0;
 }
@@ -205,6 +260,10 @@ pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state)
 	u8 cable_speed = TBT_CABLE_SPEED(data->cable_mode);
 	struct altmode_req req = { };
 
+	if (IOM_PORT_ACTIVITY_IS(port->iom_status, TBT) ||
+	    IOM_PORT_ACTIVITY_IS(port->iom_status, ALT_MODE_TBT_USB))
+		return 0;
+
 	req.usage = PMC_USB_ALT_MODE;
 	req.usage |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 	req.mode_type = PMC_USB_MODE_TYPE_TBT << PMC_USB_MODE_TYPE_SHIFT;
@@ -239,6 +298,10 @@ pmc_usb_mux_usb4(struct pmc_usb_port *port, struct typec_mux_state *state)
 	struct altmode_req req = { };
 	u8 cable_speed;
 
+	if (IOM_PORT_ACTIVITY_IS(port->iom_status, TBT) ||
+	    IOM_PORT_ACTIVITY_IS(port->iom_status, ALT_MODE_TBT_USB))
+		return 0;
+
 	req.usage = PMC_USB_ALT_MODE;
 	req.usage |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 	req.mode_type = PMC_USB_MODE_TYPE_TBT << PMC_USB_MODE_TYPE_SHIFT;
@@ -273,6 +336,9 @@ static int pmc_usb_mux_safe_state(struct pmc_usb_port *port)
 {
 	u8 msg;
 
+	if (IOM_PORT_ACTIVITY_IS(port->iom_status, SAFE_MODE))
+		return 0;
+
 	msg = PMC_USB_SAFE_MODE;
 	msg |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 
@@ -283,6 +349,9 @@ static int pmc_usb_connect(struct pmc_usb_port *port)
 {
 	u8 msg[2];
 
+	if (port->iom_status & IOM_PORT_STATUS_CONNECTED)
+		return 0;
+
 	msg[0] = PMC_USB_CONNECT;
 	msg[0] |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 
@@ -295,8 +364,16 @@ static int pmc_usb_connect(struct pmc_usb_port *port)
 
 static int pmc_usb_disconnect(struct pmc_usb_port *port)
 {
+	struct typec_displayport_data data = { };
 	u8 msg[2];
 
+	if (!(port->iom_status & IOM_PORT_STATUS_CONNECTED))
+		return 0;
+
+	/* Clear DisplayPort HPD if it's still asserted. */
+	if (IOM_PORT_HPD_ASSERTED(port->iom_status))
+		pmc_usb_mux_dp_hpd(port, &data);
+
 	msg[0] = PMC_USB_DISCONNECT;
 	msg[0] |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT;
 
@@ -310,6 +387,8 @@ pmc_usb_mux_set(struct typec_mux *mux, struct typec_mux_state *state)
 {
 	struct pmc_usb_port *port = typec_mux_get_drvdata(mux);
 
+	update_port_status(port);
+
 	if (port->orientation == TYPEC_ORIENTATION_NONE || port->role == USB_ROLE_NONE)
 		return 0;
 
@@ -345,8 +424,7 @@ static int pmc_usb_set_orientation(struct typec_switch *sw,
 {
 	struct pmc_usb_port *port = typec_switch_get_drvdata(sw);
 
-	if (port->orientation == orientation)
-		return 0;
+	update_port_status(port);
 
 	port->orientation = orientation;
 
@@ -364,8 +442,7 @@ static int pmc_usb_set_role(struct usb_role_switch *sw, enum usb_role role)
 {
 	struct pmc_usb_port *port = usb_role_switch_get_drvdata(sw);
 
-	if (port->role == role)
-		return 0;
+	update_port_status(port);
 
 	port->role = role;
 
@@ -450,6 +527,45 @@ static int pmc_usb_register_port(struct pmc_usb *pmc, int index,
 	return ret;
 }
 
+static int is_memory(struct acpi_resource *res, void *data)
+{
+	struct resource r;
+
+	return !acpi_dev_resource_memory(res, &r);
+}
+
+static int pmc_usb_probe_iom(struct pmc_usb *pmc)
+{
+	struct list_head resource_list;
+	struct resource_entry *rentry;
+	struct acpi_device *adev;
+	int ret;
+
+	adev = acpi_dev_get_first_match_dev("INTC1072", NULL, -1);
+	if (!adev)
+		return -ENODEV;
+
+	INIT_LIST_HEAD(&resource_list);
+	ret = acpi_dev_get_resources(adev, &resource_list, is_memory, NULL);
+	if (ret < 0)
+		return ret;
+
+	rentry = list_first_entry_or_null(&resource_list, struct resource_entry, node);
+	if (rentry)
+		pmc->iom_base = devm_ioremap_resource(pmc->dev, rentry->res);
+
+	acpi_dev_free_resource_list(&resource_list);
+
+	if (!pmc->iom_base) {
+		put_device(&adev->dev);
+		return -ENOMEM;
+	}
+
+	pmc->iom_adev = adev;
+
+	return 0;
+}
+
 static int pmc_usb_probe(struct platform_device *pdev)
 {
 	struct fwnode_handle *fwnode = NULL;
@@ -464,6 +580,12 @@ static int pmc_usb_probe(struct platform_device *pdev)
 	device_for_each_child_node(&pdev->dev, fwnode)
 		pmc->num_ports++;
 
+	/* The IOM microcontroller has a limitation of max 4 ports. */
+	if (pmc->num_ports > 4) {
+		dev_err(&pdev->dev, "driver limited to 4 ports\n");
+		return -ERANGE;
+	}
+
 	pmc->port = devm_kcalloc(&pdev->dev, pmc->num_ports,
 				 sizeof(struct pmc_usb_port), GFP_KERNEL);
 	if (!pmc->port)
@@ -475,6 +597,10 @@ static int pmc_usb_probe(struct platform_device *pdev)
 
 	pmc->dev = &pdev->dev;
 
+	ret = pmc_usb_probe_iom(pmc);
+	if (ret)
+		return ret;
+
 	/*
 	 * For every physical USB connector (USB2 and USB3 combo) there is a
 	 * child ACPI device node under the PMC mux ACPI device object.
@@ -499,6 +625,8 @@ static int pmc_usb_probe(struct platform_device *pdev)
 		typec_mux_unregister(pmc->port[i].typec_mux);
 	}
 
+	put_device(&pmc->iom_adev->dev);
+
 	return ret;
 }
 
@@ -512,6 +640,8 @@ static int pmc_usb_remove(struct platform_device *pdev)
 		typec_mux_unregister(pmc->port[i].typec_mux);
 	}
 
+	put_device(&pmc->iom_adev->dev);
+
 	return 0;
 }