usb: typec: qcom: Add Qualcomm PMIC Type-C driver

This commit adds a QCOM PMIC TCPM driver with an initial pm8150b
block.

The driver is layered as follows:

qcom_pmic_typec.c : Responsible for registering with TCPM and arbitrates
access to the Type-C and PDPHY hardware blocks in one
place. This presents a single TCPM device to device to
the Linux TCPM layer.

qcom_pmic_typec_pdphy.c: Responsible for interfacing with the PDPHY hardware and
processing power-delivery related calls from TCPM.
This hardware binding can be extended to
facilitate similar hardware in different PMICs.

qcom_pmic_typec_port.c: Responsible for notifying and processing Type-C
related calls from TCPM. Similar to the pdphy this
layer can be extended to handle the specifics of
different Qualcomm PMIC Type-C port managers.

This code provides all of the same functionality as the existing
qcom typec driver plus power-delivery as well.

As a result commit 6c8cf3695176 ("usb: typec: Add QCOM PMIC typec detection
driver") can be deleted entirely.

References code from Jonathan Marek, Jack Pham, Wesley Cheng, Hemant Kumar,
Guru Das Srinagesh and Ashay Jaiswal.

Acked-by: Heikki Krogerus <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Reviewed-by: Caleb Connolly <[e-mail]>
Signed-off-by: Bryan O'Donoghue <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

MAINTAINERS

···
 F:	Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
 F:	drivers/thermal/qcom/
 
+QUALCOMM TYPEC PORT MANAGER DRIVER
+M:	Bryan O'Donoghue <[e-mail]>
+L:	[e-mail]
+L:	[e-mail]
+S:	Maintained
+F:	Documentation/devicetree/bindings/usb/qcom,pmic-*.yaml
+F:	drivers/usb/typec/tcpm/qcom/
+F:	include/dt-bindings/usb/typec/qcom,pmic-pdphy.h
+F:	include/dt-bindings/usb/typec/qcom,pmic-typec.h
+
 QUALCOMM VENUS VIDEO ACCELERATOR DRIVER
 M:	Stanimir Varbanov <[e-mail]>
 M:	Vikash Garodia <[e-mail]>

drivers/usb/typec/Kconfig

···
 	  If you choose to build this driver as a dynamically linked module, the
 	  module will be called stusb160x.ko.
 
-config TYPEC_QCOM_PMIC
-	tristate "Qualcomm PMIC USB Type-C driver"
-	depends on ARCH_QCOM || COMPILE_TEST
-	depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH
-	help
-	  Driver for supporting role switch over the Qualcomm PMIC.  This will
-	  handle the USB Type-C role and orientation detection reported by the
-	  QCOM PMIC if the PMIC has the capability to handle USB Type-C
-	  detection.
-
-	  It will also enable the VBUS output to connected devices when a
-	  DFP connection is made.
-
 config TYPEC_WUSB3801
 	tristate "Willsemi WUSB3801 Type-C port controller driver"
 	depends on I2C

drivers/usb/typec/Makefile

···
 obj-$(CONFIG_TYPEC_TPS6598X)	+= tipd/
 obj-$(CONFIG_TYPEC_ANX7411)	+= anx7411.o
 obj-$(CONFIG_TYPEC_HD3SS3220)	+= hd3ss3220.o
-obj-$(CONFIG_TYPEC_QCOM_PMIC)	+= qcom-pmic-typec.o
 obj-$(CONFIG_TYPEC_STUSB160X) 	+= stusb160x.o
 obj-$(CONFIG_TYPEC_RT1719)	+= rt1719.o
 obj-$(CONFIG_TYPEC_WUSB3801)	+= wusb3801.o

drivers/usb/typec/qcom-pmic-typec.c

···
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/regmap.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-#include <linux/usb/role.h>
-#include <linux/usb/typec_mux.h>
-
-#define TYPEC_MISC_STATUS		0xb
-#define CC_ATTACHED			BIT(0)
-#define CC_ORIENTATION			BIT(1)
-#define SNK_SRC_MODE			BIT(6)
-#define TYPEC_MODE_CFG			0x44
-#define TYPEC_DISABLE_CMD		BIT(0)
-#define EN_SNK_ONLY			BIT(1)
-#define EN_SRC_ONLY			BIT(2)
-#define TYPEC_VCONN_CONTROL		0x46
-#define VCONN_EN_SRC			BIT(0)
-#define VCONN_EN_VAL			BIT(1)
-#define TYPEC_EXIT_STATE_CFG		0x50
-#define SEL_SRC_UPPER_REF		BIT(2)
-#define TYPEC_INTR_EN_CFG_1		0x5e
-#define TYPEC_INTR_EN_CFG_1_MASK	GENMASK(7, 0)
-
-struct qcom_pmic_typec {
-	struct device		*dev;
-	struct regmap		*regmap;
-	u32			base;
-
-	struct typec_port	*port;
-	struct usb_role_switch *role_sw;
-
-	struct regulator	*vbus_reg;
-	bool			vbus_enabled;
-};
-
-static void qcom_pmic_typec_enable_vbus_regulator(struct qcom_pmic_typec
-							*qcom_usb, bool enable)
-{
-	int ret;
-
-	if (enable == qcom_usb->vbus_enabled)
-		return;
-
-	if (enable) {
-		ret = regulator_enable(qcom_usb->vbus_reg);
-		if (ret)
-			return;
-	} else {
-		ret = regulator_disable(qcom_usb->vbus_reg);
-		if (ret)
-			return;
-	}
-	qcom_usb->vbus_enabled = enable;
-}
-
-static void qcom_pmic_typec_check_connection(struct qcom_pmic_typec *qcom_usb)
-{
-	enum typec_orientation orientation;
-	enum usb_role role;
-	unsigned int stat;
-	bool enable_vbus;
-
-	regmap_read(qcom_usb->regmap, qcom_usb->base + TYPEC_MISC_STATUS,
-		    &stat);
-
-	if (stat & CC_ATTACHED) {
-		orientation = (stat & CC_ORIENTATION) ?
-				TYPEC_ORIENTATION_REVERSE :
-				TYPEC_ORIENTATION_NORMAL;
-		typec_set_orientation(qcom_usb->port, orientation);
-
-		role = (stat & SNK_SRC_MODE) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
-		if (role == USB_ROLE_HOST)
-			enable_vbus = true;
-		else
-			enable_vbus = false;
-	} else {
-		role = USB_ROLE_NONE;
-		enable_vbus = false;
-	}
-
-	qcom_pmic_typec_enable_vbus_regulator(qcom_usb, enable_vbus);
-	usb_role_switch_set_role(qcom_usb->role_sw, role);
-}
-
-static irqreturn_t qcom_pmic_typec_interrupt(int irq, void *_qcom_usb)
-{
-	struct qcom_pmic_typec *qcom_usb = _qcom_usb;
-
-	qcom_pmic_typec_check_connection(qcom_usb);
-	return IRQ_HANDLED;
-}
-
-static void qcom_pmic_typec_typec_hw_init(struct qcom_pmic_typec *qcom_usb,
-					  enum typec_port_type type)
-{
-	u8 mode = 0;
-
-	regmap_update_bits(qcom_usb->regmap,
-			   qcom_usb->base + TYPEC_INTR_EN_CFG_1,
-			   TYPEC_INTR_EN_CFG_1_MASK, 0);
-
-	if (type == TYPEC_PORT_SRC)
-		mode = EN_SRC_ONLY;
-	else if (type == TYPEC_PORT_SNK)
-		mode = EN_SNK_ONLY;
-
-	regmap_update_bits(qcom_usb->regmap, qcom_usb->base + TYPEC_MODE_CFG,
-			   EN_SNK_ONLY | EN_SRC_ONLY, mode);
-
-	regmap_update_bits(qcom_usb->regmap,
-			   qcom_usb->base + TYPEC_VCONN_CONTROL,
-			   VCONN_EN_SRC | VCONN_EN_VAL, VCONN_EN_SRC);
-	regmap_update_bits(qcom_usb->regmap,
-			   qcom_usb->base + TYPEC_EXIT_STATE_CFG,
-			   SEL_SRC_UPPER_REF, SEL_SRC_UPPER_REF);
-}
-
-static int qcom_pmic_typec_probe(struct platform_device *pdev)
-{
-	struct qcom_pmic_typec *qcom_usb;
-	struct device *dev = &pdev->dev;
-	struct fwnode_handle *fwnode;
-	struct typec_capability cap;
-	const char *buf;
-	int ret, irq, role;
-	u32 reg;
-
-	ret = device_property_read_u32(dev, "reg", &reg);
-	if (ret < 0) {
-		dev_err(dev, "missing base address\n");
-		return ret;
-	}
-
-	qcom_usb = devm_kzalloc(dev, sizeof(*qcom_usb), GFP_KERNEL);
-	if (!qcom_usb)
-		return -ENOMEM;
-
-	qcom_usb->dev = dev;
-	qcom_usb->base = reg;
-
-	qcom_usb->regmap = dev_get_regmap(dev->parent, NULL);
-	if (!qcom_usb->regmap) {
-		dev_err(dev, "Failed to get regmap\n");
-		return -EINVAL;
-	}
-
-	qcom_usb->vbus_reg = devm_regulator_get(qcom_usb->dev, "usb_vbus");
-	if (IS_ERR(qcom_usb->vbus_reg))
-		return PTR_ERR(qcom_usb->vbus_reg);
-
-	fwnode = device_get_named_child_node(dev, "connector");
-	if (!fwnode)
-		return -EINVAL;
-
-	ret = fwnode_property_read_string(fwnode, "power-role", &buf);
-	if (!ret) {
-		role = typec_find_port_power_role(buf);
-		if (role < 0)
-			role = TYPEC_PORT_SNK;
-	} else {
-		role = TYPEC_PORT_SNK;
-	}
-	cap.type = role;
-
-	ret = fwnode_property_read_string(fwnode, "data-role", &buf);
-	if (!ret) {
-		role = typec_find_port_data_role(buf);
-		if (role < 0)
-			role = TYPEC_PORT_UFP;
-	} else {
-		role = TYPEC_PORT_UFP;
-	}
-	cap.data = role;
-
-	cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
-	cap.fwnode = fwnode;
-	qcom_usb->port = typec_register_port(dev, &cap);
-	if (IS_ERR(qcom_usb->port)) {
-		ret = PTR_ERR(qcom_usb->port);
-		dev_err(dev, "Failed to register type c port %d\n", ret);
-		goto err_put_node;
-	}
-	fwnode_handle_put(fwnode);
-
-	qcom_usb->role_sw = fwnode_usb_role_switch_get(dev_fwnode(qcom_usb->dev));
-	if (IS_ERR(qcom_usb->role_sw)) {
-		ret = dev_err_probe(dev, PTR_ERR(qcom_usb->role_sw),
-				    "failed to get role switch\n");
-		goto err_typec_port;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		goto err_usb_role_sw;
-
-	ret = devm_request_threaded_irq(qcom_usb->dev, irq, NULL,
-					qcom_pmic_typec_interrupt, IRQF_ONESHOT,
-					"qcom-pmic-typec", qcom_usb);
-	if (ret) {
-		dev_err(&pdev->dev, "Could not request IRQ\n");
-		goto err_usb_role_sw;
-	}
-
-	platform_set_drvdata(pdev, qcom_usb);
-	qcom_pmic_typec_typec_hw_init(qcom_usb, cap.type);
-	qcom_pmic_typec_check_connection(qcom_usb);
-
-	return 0;
-
-err_usb_role_sw:
-	usb_role_switch_put(qcom_usb->role_sw);
-err_typec_port:
-	typec_unregister_port(qcom_usb->port);
-err_put_node:
-	fwnode_handle_put(fwnode);
-
-	return ret;
-}
-
-static int qcom_pmic_typec_remove(struct platform_device *pdev)
-{
-	struct qcom_pmic_typec *qcom_usb = platform_get_drvdata(pdev);
-
-	usb_role_switch_set_role(qcom_usb->role_sw, USB_ROLE_NONE);
-	qcom_pmic_typec_enable_vbus_regulator(qcom_usb, 0);
-
-	typec_unregister_port(qcom_usb->port);
-	usb_role_switch_put(qcom_usb->role_sw);
-
-	return 0;
-}
-
-static const struct of_device_id qcom_pmic_typec_table[] = {
-	{ .compatible = "qcom,pm8150b-usb-typec" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, qcom_pmic_typec_table);
-
-static struct platform_driver qcom_pmic_typec = {
-	.driver = {
-		.name = "qcom,pmic-typec",
-		.of_match_table = qcom_pmic_typec_table,
-	},
-	.probe = qcom_pmic_typec_probe,
-	.remove = qcom_pmic_typec_remove,
-};
-module_platform_driver(qcom_pmic_typec);
-
-MODULE_DESCRIPTION("QCOM PMIC USB type C driver");
-MODULE_LICENSE("GPL v2");

drivers/usb/typec/tcpm/Kconfig

···
 	  To compile this driver as module, choose M here: the module will be
 	  called typec_wcove.ko
 
+config TYPEC_QCOM_PMIC
+	tristate "Qualcomm PMIC USB Type-C Port Controller Manager driver"
+	depends on ARCH_QCOM || COMPILE_TEST
+	help
+	  A Type-C port and Power Delivery driver which aggregates two
+	  discrete pieces of silicon in the PM8150b PMIC block: the
+	  Type-C port controller and the Power Delivery PHY.
+
+	  This driver enables Type-C role switching, orientation, Alternate
+	  mode and Power Delivery support both for VBUS and VCONN.
+
 endif # TYPEC_TCPM

drivers/usb/typec/tcpm/Makefile

···
 obj-$(CONFIG_TYPEC_TCPCI_MT6370)	+= tcpci_mt6370.o
 obj-$(CONFIG_TYPEC_TCPCI_MAXIM)		+= tcpci_maxim.o
 tcpci_maxim-y				+= tcpci_maxim_core.o maxim_contaminant.o
+obj-$(CONFIG_TYPEC_QCOM_PMIC)		+= qcom/

drivers/usb/typec/tcpm/qcom/Makefile

···
+# SPDX-License-Identifier: GPL-2.0
+#
+obj-$(CONFIG_TYPEC_QCOM_PMIC)		+= qcom_pmic_tcpm.o
+qcom_pmic_tcpm-y			+= qcom_pmic_typec.o \
+					   qcom_pmic_typec_port.o \
+					   qcom_pmic_typec_pdphy.o

drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/usb/role.h>
+#include <linux/usb/tcpm.h>
+#include <linux/usb/typec_mux.h>
+#include "qcom_pmic_typec_pdphy.h"
+#include "qcom_pmic_typec_port.h"
+
+struct pmic_typec_resources {
+	struct pmic_typec_pdphy_resources	*pdphy_res;
+	struct pmic_typec_port_resources	*port_res;
+};
+
+struct pmic_typec {
+	struct device		*dev;
+	struct tcpm_port	*tcpm_port;
+	struct tcpc_dev		tcpc;
+	struct pmic_typec_pdphy	*pmic_typec_pdphy;
+	struct pmic_typec_port	*pmic_typec_port;
+	bool			vbus_enabled;
+	struct mutex		lock;		/* VBUS state serialization */
+};
+
+#define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_typec, tcpc)
+
+static int qcom_pmic_typec_get_vbus(struct tcpc_dev *tcpc)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+	int ret;
+
+	mutex_lock(&tcpm->lock);
+	ret = tcpm->vbus_enabled || qcom_pmic_typec_port_get_vbus(tcpm->pmic_typec_port);
+	mutex_unlock(&tcpm->lock);
+
+	return ret;
+}
+
+static int qcom_pmic_typec_set_vbus(struct tcpc_dev *tcpc, bool on, bool sink)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+	int ret = 0;
+
+	mutex_lock(&tcpm->lock);
+	if (tcpm->vbus_enabled == on)
+		goto done;
+
+	ret = qcom_pmic_typec_port_set_vbus(tcpm->pmic_typec_port, on);
+	if (ret)
+		goto done;
+
+	tcpm->vbus_enabled = on;
+	tcpm_vbus_change(tcpm->tcpm_port);
+
+done:
+	dev_dbg(tcpm->dev, "set_vbus set: %d result %d\n", on, ret);
+	mutex_unlock(&tcpm->lock);
+
+	return ret;
+}
+
+static int qcom_pmic_typec_set_vconn(struct tcpc_dev *tcpc, bool on)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_port_set_vconn(tcpm->pmic_typec_port, on);
+}
+
+static int qcom_pmic_typec_get_cc(struct tcpc_dev *tcpc,
+				  enum typec_cc_status *cc1,
+				  enum typec_cc_status *cc2)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_port_get_cc(tcpm->pmic_typec_port, cc1, cc2);
+}
+
+static int qcom_pmic_typec_set_cc(struct tcpc_dev *tcpc,
+				  enum typec_cc_status cc)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_port_set_cc(tcpm->pmic_typec_port, cc);
+}
+
+static int qcom_pmic_typec_set_polarity(struct tcpc_dev *tcpc,
+					enum typec_cc_polarity pol)
+{
+	/* Polarity is set separately by phy-qcom-qmp.c */
+	return 0;
+}
+
+static int qcom_pmic_typec_start_toggling(struct tcpc_dev *tcpc,
+					  enum typec_port_type port_type,
+					  enum typec_cc_status cc)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_port_start_toggling(tcpm->pmic_typec_port,
+						   port_type, cc);
+}
+
+static int qcom_pmic_typec_set_roles(struct tcpc_dev *tcpc, bool attached,
+				     enum typec_role power_role,
+				     enum typec_data_role data_role)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_pdphy_set_roles(tcpm->pmic_typec_pdphy,
+					       data_role, power_role);
+}
+
+static int qcom_pmic_typec_set_pd_rx(struct tcpc_dev *tcpc, bool on)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_pdphy_set_pd_rx(tcpm->pmic_typec_pdphy, on);
+}
+
+static int qcom_pmic_typec_pd_transmit(struct tcpc_dev *tcpc,
+				       enum tcpm_transmit_type type,
+				       const struct pd_message *msg,
+				       unsigned int negotiated_rev)
+{
+	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
+
+	return qcom_pmic_typec_pdphy_pd_transmit(tcpm->pmic_typec_pdphy, type,
+						 msg, negotiated_rev);
+}
+
+static int qcom_pmic_typec_init(struct tcpc_dev *tcpc)
+{
+	return 0;
+}
+
+static int qcom_pmic_typec_probe(struct platform_device *pdev)
+{
+	struct pmic_typec *tcpm;
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	const struct pmic_typec_resources *res;
+	struct regmap *regmap;
+	u32 base[2];
+	int ret;
+
+	res = of_device_get_match_data(dev);
+	if (!res)
+		return -ENODEV;
+
+	tcpm = devm_kzalloc(dev, sizeof(*tcpm), GFP_KERNEL);
+	if (!tcpm)
+		return -ENOMEM;
+
+	tcpm->dev = dev;
+	tcpm->tcpc.init = qcom_pmic_typec_init;
+	tcpm->tcpc.get_vbus = qcom_pmic_typec_get_vbus;
+	tcpm->tcpc.set_vbus = qcom_pmic_typec_set_vbus;
+	tcpm->tcpc.set_cc = qcom_pmic_typec_set_cc;
+	tcpm->tcpc.get_cc = qcom_pmic_typec_get_cc;
+	tcpm->tcpc.set_polarity = qcom_pmic_typec_set_polarity;
+	tcpm->tcpc.set_vconn = qcom_pmic_typec_set_vconn;
+	tcpm->tcpc.start_toggling = qcom_pmic_typec_start_toggling;
+	tcpm->tcpc.set_pd_rx = qcom_pmic_typec_set_pd_rx;
+	tcpm->tcpc.set_roles = qcom_pmic_typec_set_roles;
+	tcpm->tcpc.pd_transmit = qcom_pmic_typec_pd_transmit;
+
+	regmap = dev_get_regmap(dev->parent, NULL);
+	if (!regmap) {
+		dev_err(dev, "Failed to get regmap\n");
+		return -ENODEV;
+	}
+
+	ret = of_property_read_u32_array(np, "reg", base, 2);
+	if (ret)
+		return ret;
+
+	tcpm->pmic_typec_port = qcom_pmic_typec_port_alloc(dev);
+	if (IS_ERR(tcpm->pmic_typec_port))
+		return PTR_ERR(tcpm->pmic_typec_port);
+
+	tcpm->pmic_typec_pdphy = qcom_pmic_typec_pdphy_alloc(dev);
+	if (IS_ERR(tcpm->pmic_typec_pdphy))
+		return PTR_ERR(tcpm->pmic_typec_pdphy);
+
+	ret = qcom_pmic_typec_port_probe(pdev, tcpm->pmic_typec_port,
+					 res->port_res, regmap, base[0]);
+	if (ret)
+		return ret;
+
+	ret = qcom_pmic_typec_pdphy_probe(pdev, tcpm->pmic_typec_pdphy,
+					  res->pdphy_res, regmap, base[1]);
+	if (ret)
+		return ret;
+
+	mutex_init(&tcpm->lock);
+	platform_set_drvdata(pdev, tcpm);
+
+	tcpm->tcpc.fwnode = device_get_named_child_node(tcpm->dev, "connector");
+	if (IS_ERR(tcpm->tcpc.fwnode))
+		return PTR_ERR(tcpm->tcpc.fwnode);
+
+	tcpm->tcpm_port = tcpm_register_port(tcpm->dev, &tcpm->tcpc);
+	if (IS_ERR(tcpm->tcpm_port)) {
+		ret = PTR_ERR(tcpm->tcpm_port);
+		goto fwnode_remove;
+	}
+
+	ret = qcom_pmic_typec_port_start(tcpm->pmic_typec_port,
+					 tcpm->tcpm_port);
+	if (ret)
+		goto fwnode_remove;
+
+	ret = qcom_pmic_typec_pdphy_start(tcpm->pmic_typec_pdphy,
+					  tcpm->tcpm_port);
+	if (ret)
+		goto fwnode_remove;
+
+	return 0;
+
+fwnode_remove:
+	fwnode_remove_software_node(tcpm->tcpc.fwnode);
+
+	return ret;
+}
+
+static int qcom_pmic_typec_remove(struct platform_device *pdev)
+{
+	struct pmic_typec *tcpm = platform_get_drvdata(pdev);
+
+	qcom_pmic_typec_pdphy_stop(tcpm->pmic_typec_pdphy);
+	qcom_pmic_typec_port_stop(tcpm->pmic_typec_port);
+	tcpm_unregister_port(tcpm->tcpm_port);
+	fwnode_remove_software_node(tcpm->tcpc.fwnode);
+
+	return 0;
+}
+
+static struct pmic_typec_pdphy_resources pm8150b_pdphy_res = {
+	.irq_params = {
+		{
+			.virq = PMIC_PDPHY_SIG_TX_IRQ,
+			.irq_name = "sig-tx",
+		},
+		{
+			.virq = PMIC_PDPHY_SIG_RX_IRQ,
+			.irq_name = "sig-rx",
+		},
+		{
+			.virq = PMIC_PDPHY_MSG_TX_IRQ,
+			.irq_name = "msg-tx",
+		},
+		{
+			.virq = PMIC_PDPHY_MSG_RX_IRQ,
+			.irq_name = "msg-rx",
+		},
+		{
+			.virq = PMIC_PDPHY_MSG_TX_FAIL_IRQ,
+			.irq_name = "msg-tx-failed",
+		},
+		{
+			.virq = PMIC_PDPHY_MSG_TX_DISCARD_IRQ,
+			.irq_name = "msg-tx-discarded",
+		},
+		{
+			.virq = PMIC_PDPHY_MSG_RX_DISCARD_IRQ,
+			.irq_name = "msg-rx-discarded",
+		},
+	},
+	.nr_irqs = 7,
+};
+
+static struct pmic_typec_port_resources pm8150b_port_res = {
+	.irq_params = {
+		{
+			.irq_name = "vpd-detect",
+			.virq = PMIC_TYPEC_VPD_IRQ,
+		},
+
+		{
+			.irq_name = "cc-state-change",
+			.virq = PMIC_TYPEC_CC_STATE_IRQ,
+		},
+		{
+			.irq_name = "vconn-oc",
+			.virq = PMIC_TYPEC_VCONN_OC_IRQ,
+		},
+
+		{
+			.irq_name = "vbus-change",
+			.virq = PMIC_TYPEC_VBUS_IRQ,
+		},
+
+		{
+			.irq_name = "attach-detach",
+			.virq = PMIC_TYPEC_ATTACH_DETACH_IRQ,
+		},
+		{
+			.irq_name = "legacy-cable-detect",
+			.virq = PMIC_TYPEC_LEGACY_CABLE_IRQ,
+		},
+
+		{
+			.irq_name = "try-snk-src-detect",
+			.virq = PMIC_TYPEC_TRY_SNK_SRC_IRQ,
+		},
+	},
+	.nr_irqs = 7,
+};
+
+struct pmic_typec_resources pm8150b_typec_res = {
+	.pdphy_res = &pm8150b_pdphy_res,
+	.port_res = &pm8150b_port_res,
+};
+
+static const struct of_device_id qcom_pmic_typec_table[] = {
+	{ .compatible = "qcom,pm8150b-typec", .data = &pm8150b_typec_res },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, qcom_pmic_typec_table);
+
+static struct platform_driver qcom_pmic_typec_driver = {
+	.driver = {
+		.name = "qcom,pmic-typec",
+		.of_match_table = qcom_pmic_typec_table,
+	},
+	.probe = qcom_pmic_typec_probe,
+	.remove = qcom_pmic_typec_remove,
+};
+
+module_platform_driver(qcom_pmic_typec_driver);
+
+MODULE_DESCRIPTION("QCOM PMIC USB Type-C Port Manager Driver");
+MODULE_LICENSE("GPL");

drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/usb/pd.h>
+#include <linux/usb/tcpm.h>
+#include "qcom_pmic_typec_pdphy.h"
+
+struct pmic_typec_pdphy_irq_data {
+	int				virq;
+	int				irq;
+	struct pmic_typec_pdphy		*pmic_typec_pdphy;
+};
+
+struct pmic_typec_pdphy {
+	struct device			*dev;
+	struct tcpm_port		*tcpm_port;
+	struct regmap			*regmap;
+	u32				base;
+
+	unsigned int			nr_irqs;
+	struct pmic_typec_pdphy_irq_data	*irq_data;
+
+	struct work_struct		reset_work;
+	struct work_struct		receive_work;
+	struct regulator		*vdd_pdphy;
+	spinlock_t			lock;		/* Register atomicity */
+};
+
+static void qcom_pmic_typec_pdphy_reset_on(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	int ret;
+
+	/* Terminate TX */
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_TX_CONTROL_REG, 0);
+	if (ret)
+		goto err;
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_FRAME_FILTER_REG, 0);
+	if (ret)
+		goto err;
+
+	return;
+err:
+	dev_err(dev, "pd_reset_on error\n");
+}
+
+static void qcom_pmic_typec_pdphy_reset_off(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	int ret;
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_FRAME_FILTER_REG,
+			   FRAME_FILTER_EN_SOP | FRAME_FILTER_EN_HARD_RESET);
+	if (ret)
+		dev_err(dev, "pd_reset_off error\n");
+}
+
+static void qcom_pmic_typec_pdphy_sig_reset_work(struct work_struct *work)
+{
+	struct pmic_typec_pdphy *pmic_typec_pdphy = container_of(work, struct pmic_typec_pdphy,
+						     reset_work);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	qcom_pmic_typec_pdphy_reset_on(pmic_typec_pdphy);
+	qcom_pmic_typec_pdphy_reset_off(pmic_typec_pdphy);
+
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	tcpm_pd_hard_reset(pmic_typec_pdphy->tcpm_port);
+}
+
+static int
+qcom_pmic_typec_pdphy_clear_tx_control_reg(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	unsigned int val;
+	int ret;
+
+	/* Clear TX control register */
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_TX_CONTROL_REG, 0);
+	if (ret)
+		goto done;
+
+	/* Perform readback to ensure sufficient delay for command to latch */
+	ret = regmap_read(pmic_typec_pdphy->regmap,
+			  pmic_typec_pdphy->base + USB_PDPHY_TX_CONTROL_REG, &val);
+
+done:
+	if (ret)
+		dev_err(dev, "pd_clear_tx_control_reg: clear tx flag\n");
+
+	return ret;
+}
+
+static int
+qcom_pmic_typec_pdphy_pd_transmit_signal(struct pmic_typec_pdphy *pmic_typec_pdphy,
+					 enum tcpm_transmit_type type,
+					 unsigned int negotiated_rev)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	unsigned int val;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	/* Clear TX control register */
+	ret = qcom_pmic_typec_pdphy_clear_tx_control_reg(pmic_typec_pdphy);
+	if (ret)
+		goto done;
+
+	val = TX_CONTROL_SEND_SIGNAL;
+	if (negotiated_rev == PD_REV30)
+		val |= TX_CONTROL_RETRY_COUNT(2);
+	else
+		val |= TX_CONTROL_RETRY_COUNT(3);
+
+	if (type == TCPC_TX_CABLE_RESET || type == TCPC_TX_HARD_RESET)
+		val |= TX_CONTROL_FRAME_TYPE(1);
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_TX_CONTROL_REG, val);
+
+done:
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	dev_vdbg(dev, "pd_transmit_signal: type %d negotiate_rev %d send %d\n",
+		 type, negotiated_rev, ret);
+
+	return ret;
+}
+
+static int
+qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy *pmic_typec_pdphy,
+					  enum tcpm_transmit_type type,
+					  const struct pd_message *msg,
+					  unsigned int negotiated_rev)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	unsigned int val, hdr_len, txbuf_len, txsize_len;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	ret = regmap_read(pmic_typec_pdphy->regmap,
+			  pmic_typec_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG,
+			  &val);
+	if (ret)
+		goto done;
+
+	if (val) {
+		dev_err(dev, "pd_transmit_payload: RX message pending\n");
+		ret = -EBUSY;
+		goto done;
+	}
+
+	/* Clear TX control register */
+	ret = qcom_pmic_typec_pdphy_clear_tx_control_reg(pmic_typec_pdphy);
+	if (ret)
+		goto done;
+
+	hdr_len = sizeof(msg->header);
+	txbuf_len = pd_header_cnt_le(msg->header) * 4;
+	txsize_len = hdr_len + txbuf_len - 1;
+
+	/* Write message header sizeof(u16) to USB_PDPHY_TX_BUFFER_HDR_REG */
+	ret = regmap_bulk_write(pmic_typec_pdphy->regmap,
+				pmic_typec_pdphy->base + USB_PDPHY_TX_BUFFER_HDR_REG,
+				&msg->header, hdr_len);
+	if (ret)
+		goto done;
+
+	/* Write payload to USB_PDPHY_TX_BUFFER_DATA_REG for txbuf_len */
+	if (txbuf_len) {
+		ret = regmap_bulk_write(pmic_typec_pdphy->regmap,
+					pmic_typec_pdphy->base + USB_PDPHY_TX_BUFFER_DATA_REG,
+					&msg->payload, txbuf_len);
+		if (ret)
+			goto done;
+	}
+
+	/* Write total length ((header + data) - 1) to USB_PDPHY_TX_SIZE_REG */
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_TX_SIZE_REG,
+			   txsize_len);
+	if (ret)
+		goto done;
+
+	/* Clear TX control register */
+	ret = qcom_pmic_typec_pdphy_clear_tx_control_reg(pmic_typec_pdphy);
+	if (ret)
+		goto done;
+
+	/* Initiate transmit with retry count as indicated by PD revision */
+	val = TX_CONTROL_FRAME_TYPE(type) | TX_CONTROL_SEND_MSG;
+	if (pd_header_rev(msg->header) == PD_REV30)
+		val |= TX_CONTROL_RETRY_COUNT(2);
+	else
+		val |= TX_CONTROL_RETRY_COUNT(3);
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_TX_CONTROL_REG, val);
+
+done:
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	if (ret) {
+		dev_err(dev, "pd_transmit_payload: hdr %*ph data %*ph ret %d\n",
+			hdr_len, &msg->header, txbuf_len, &msg->payload, ret);
+	}
+
+	return ret;
+}
+
+int qcom_pmic_typec_pdphy_pd_transmit(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				      enum tcpm_transmit_type type,
+				      const struct pd_message *msg,
+				      unsigned int negotiated_rev)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	int ret;
+
+	if (msg) {
+		ret = qcom_pmic_typec_pdphy_pd_transmit_payload(pmic_typec_pdphy,
+								type, msg,
+								negotiated_rev);
+	} else {
+		ret = qcom_pmic_typec_pdphy_pd_transmit_signal(pmic_typec_pdphy,
+							       type,
+							       negotiated_rev);
+	}
+
+	if (ret)
+		dev_dbg(dev, "pd_transmit: type %x result %d\n", type, ret);
+
+	return ret;
+}
+
+static void qcom_pmic_typec_pdphy_pd_receive(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	struct pd_message msg;
+	unsigned int size, rx_status;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	ret = regmap_read(pmic_typec_pdphy->regmap,
+			  pmic_typec_pdphy->base + USB_PDPHY_RX_SIZE_REG, &size);
+	if (ret)
+		goto done;
+
+	/* Hardware requires +1 of the real read value to be passed */
+	if (size < 1 || size > sizeof(msg.payload) + 1) {
+		dev_dbg(dev, "pd_receive: invalid size %d\n", size);
+		goto done;
+	}
+
+	size += 1;
+	ret = regmap_read(pmic_typec_pdphy->regmap,
+			  pmic_typec_pdphy->base + USB_PDPHY_RX_STATUS_REG,
+			  &rx_status);
+
+	if (ret)
+		goto done;
+
+	ret = regmap_bulk_read(pmic_typec_pdphy->regmap,
+			       pmic_typec_pdphy->base + USB_PDPHY_RX_BUFFER_REG,
+			       (u8 *)&msg, size);
+	if (ret)
+		goto done;
+
+	/* Return ownership of RX buffer to hardware */
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, 0);
+
+done:
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	if (!ret) {
+		dev_vdbg(dev, "pd_receive: handing %d bytes to tcpm\n", size);
+		tcpm_pd_receive(pmic_typec_pdphy->tcpm_port, &msg);
+	}
+}
+
+static irqreturn_t qcom_pmic_typec_pdphy_isr(int irq, void *dev_id)
+{
+	struct pmic_typec_pdphy_irq_data *irq_data = dev_id;
+	struct pmic_typec_pdphy *pmic_typec_pdphy = irq_data->pmic_typec_pdphy;
+	struct device *dev = pmic_typec_pdphy->dev;
+
+	switch (irq_data->virq) {
+	case PMIC_PDPHY_SIG_TX_IRQ:
+		dev_err(dev, "isr: tx_sig\n");
+		break;
+	case PMIC_PDPHY_SIG_RX_IRQ:
+		schedule_work(&pmic_typec_pdphy->reset_work);
+		break;
+	case PMIC_PDPHY_MSG_TX_IRQ:
+		tcpm_pd_transmit_complete(pmic_typec_pdphy->tcpm_port,
+					  TCPC_TX_SUCCESS);
+		break;
+	case PMIC_PDPHY_MSG_RX_IRQ:
+		qcom_pmic_typec_pdphy_pd_receive(pmic_typec_pdphy);
+		break;
+	case PMIC_PDPHY_MSG_TX_FAIL_IRQ:
+		tcpm_pd_transmit_complete(pmic_typec_pdphy->tcpm_port,
+					  TCPC_TX_FAILED);
+		break;
+	case PMIC_PDPHY_MSG_TX_DISCARD_IRQ:
+		tcpm_pd_transmit_complete(pmic_typec_pdphy->tcpm_port,
+					  TCPC_TX_DISCARDED);
+		break;
+	}
+
+	return IRQ_HANDLED;
+}
+
+int qcom_pmic_typec_pdphy_set_pd_rx(struct pmic_typec_pdphy *pmic_typec_pdphy, bool on)
+{
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, !on);
+
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	dev_dbg(pmic_typec_pdphy->dev, "set_pd_rx: %s\n", on ? "on" : "off");
+
+	return ret;
+}
+
+int qcom_pmic_typec_pdphy_set_roles(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				    bool data_role_host, bool power_role_src)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_pdphy->lock, flags);
+
+	ret = regmap_update_bits(pmic_typec_pdphy->regmap,
+				 pmic_typec_pdphy->base + USB_PDPHY_MSG_CONFIG_REG,
+				 MSG_CONFIG_PORT_DATA_ROLE |
+				 MSG_CONFIG_PORT_POWER_ROLE,
+				 data_role_host << 3 | power_role_src << 2);
+
+	spin_unlock_irqrestore(&pmic_typec_pdphy->lock, flags);
+
+	dev_dbg(dev, "pdphy_set_roles: data_role_host=%d power_role_src=%d\n",
+		data_role_host, power_role_src);
+
+	return ret;
+}
+
+static int qcom_pmic_typec_pdphy_enable(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	struct device *dev = pmic_typec_pdphy->dev;
+	int ret;
+
+	ret = regulator_enable(pmic_typec_pdphy->vdd_pdphy);
+	if (ret)
+		return ret;
+
+	/* PD 2.0, DR=TYPEC_DEVICE, PR=TYPEC_SINK */
+	ret = regmap_update_bits(pmic_typec_pdphy->regmap,
+				 pmic_typec_pdphy->base + USB_PDPHY_MSG_CONFIG_REG,
+				 MSG_CONFIG_SPEC_REV_MASK, PD_REV20);
+	if (ret)
+		goto done;
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_EN_CONTROL_REG, 0);
+	if (ret)
+		goto done;
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_EN_CONTROL_REG,
+			   CONTROL_ENABLE);
+	if (ret)
+		goto done;
+
+	qcom_pmic_typec_pdphy_reset_off(pmic_typec_pdphy);
+done:
+	if (ret) {
+		regulator_disable(pmic_typec_pdphy->vdd_pdphy);
+		dev_err(dev, "pdphy_enable fail %d\n", ret);
+	}
+
+	return ret;
+}
+
+static int qcom_pmic_typec_pdphy_disable(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	int ret;
+
+	qcom_pmic_typec_pdphy_reset_on(pmic_typec_pdphy);
+
+	ret = regmap_write(pmic_typec_pdphy->regmap,
+			   pmic_typec_pdphy->base + USB_PDPHY_EN_CONTROL_REG, 0);
+
+	regulator_disable(pmic_typec_pdphy->vdd_pdphy);
+
+	return ret;
+}
+
+static int pmic_typec_pdphy_reset(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	int ret;
+
+	ret = qcom_pmic_typec_pdphy_disable(pmic_typec_pdphy);
+	if (ret)
+		goto done;
+
+	usleep_range(400, 500);
+	ret = qcom_pmic_typec_pdphy_enable(pmic_typec_pdphy);
+done:
+	return ret;
+}
+
+int qcom_pmic_typec_pdphy_start(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				struct tcpm_port *tcpm_port)
+{
+	int i;
+	int ret;
+
+	pmic_typec_pdphy->tcpm_port = tcpm_port;
+
+	ret = pmic_typec_pdphy_reset(pmic_typec_pdphy);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < pmic_typec_pdphy->nr_irqs; i++)
+		enable_irq(pmic_typec_pdphy->irq_data[i].irq);
+
+	return 0;
+}
+
+void qcom_pmic_typec_pdphy_stop(struct pmic_typec_pdphy *pmic_typec_pdphy)
+{
+	int i;
+
+	for (i = 0; i < pmic_typec_pdphy->nr_irqs; i++)
+		disable_irq(pmic_typec_pdphy->irq_data[i].irq);
+
+	qcom_pmic_typec_pdphy_reset_on(pmic_typec_pdphy);
+}
+
+struct pmic_typec_pdphy *qcom_pmic_typec_pdphy_alloc(struct device *dev)
+{
+	return devm_kzalloc(dev, sizeof(struct pmic_typec_pdphy), GFP_KERNEL);
+}
+
+int qcom_pmic_typec_pdphy_probe(struct platform_device *pdev,
+				struct pmic_typec_pdphy *pmic_typec_pdphy,
+				struct pmic_typec_pdphy_resources *res,
+				struct regmap *regmap,
+				u32 base)
+{
+	struct device *dev = &pdev->dev;
+	struct pmic_typec_pdphy_irq_data *irq_data;
+	int i, ret, irq;
+
+	if (!res->nr_irqs || res->nr_irqs > PMIC_PDPHY_MAX_IRQS)
+		return -EINVAL;
+
+	irq_data = devm_kzalloc(dev, sizeof(*irq_data) * res->nr_irqs,
+				GFP_KERNEL);
+	if (!irq_data)
+		return -ENOMEM;
+
+	pmic_typec_pdphy->vdd_pdphy = devm_regulator_get(dev, "vdd-pdphy");
+	if (IS_ERR(pmic_typec_pdphy->vdd_pdphy))
+		return PTR_ERR(pmic_typec_pdphy->vdd_pdphy);
+
+	pmic_typec_pdphy->dev = dev;
+	pmic_typec_pdphy->base = base;
+	pmic_typec_pdphy->regmap = regmap;
+	pmic_typec_pdphy->nr_irqs = res->nr_irqs;
+	pmic_typec_pdphy->irq_data = irq_data;
+	spin_lock_init(&pmic_typec_pdphy->lock);
+	INIT_WORK(&pmic_typec_pdphy->reset_work, qcom_pmic_typec_pdphy_sig_reset_work);
+
+	for (i = 0; i < res->nr_irqs; i++, irq_data++) {
+		irq = platform_get_irq_byname(pdev, res->irq_params[i].irq_name);
+		if (irq < 0)
+			return irq;
+
+		irq_data->pmic_typec_pdphy = pmic_typec_pdphy;
+		irq_data->irq = irq;
+		irq_data->virq = res->irq_params[i].virq;
+
+		ret = devm_request_threaded_irq(dev, irq, NULL,
+						qcom_pmic_typec_pdphy_isr,
+						IRQF_ONESHOT | IRQF_NO_AUTOEN,
+						res->irq_params[i].irq_name,
+						irq_data);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}

drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+#ifndef __QCOM_PMIC_PDPHY_H__
+#define __QCOM_PMIC_PDPHY_H__
+
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/usb/tcpm.h>
+
+#define USB_PDPHY_MAX_DATA_OBJ_LEN	28
+#define USB_PDPHY_MSG_HDR_LEN		2
+
+/* PD PHY register offsets and bit fields */
+#define USB_PDPHY_MSG_CONFIG_REG	0x40
+#define MSG_CONFIG_PORT_DATA_ROLE	BIT(3)
+#define MSG_CONFIG_PORT_POWER_ROLE	BIT(2)
+#define MSG_CONFIG_SPEC_REV_MASK	(BIT(1) | BIT(0))
+
+#define USB_PDPHY_EN_CONTROL_REG	0x46
+#define CONTROL_ENABLE			BIT(0)
+
+#define USB_PDPHY_RX_STATUS_REG		0x4A
+#define RX_FRAME_TYPE			(BIT(0) | BIT(1) | BIT(2))
+
+#define USB_PDPHY_FRAME_FILTER_REG	0x4C
+#define FRAME_FILTER_EN_HARD_RESET	BIT(5)
+#define FRAME_FILTER_EN_SOP		BIT(0)
+
+#define USB_PDPHY_TX_SIZE_REG		0x42
+#define TX_SIZE_MASK			0xF
+
+#define USB_PDPHY_TX_CONTROL_REG	0x44
+#define TX_CONTROL_RETRY_COUNT(n)	(((n) & 0x3) << 5)
+#define TX_CONTROL_FRAME_TYPE(n)        (((n) & 0x7) << 2)
+#define TX_CONTROL_FRAME_TYPE_CABLE_RESET	(0x1 << 2)
+#define TX_CONTROL_SEND_SIGNAL		BIT(1)
+#define TX_CONTROL_SEND_MSG		BIT(0)
+
+#define USB_PDPHY_RX_SIZE_REG		0x48
+
+#define USB_PDPHY_RX_ACKNOWLEDGE_REG	0x4B
+#define RX_BUFFER_TOKEN			BIT(0)
+
+#define USB_PDPHY_BIST_MODE_REG		0x4E
+#define BIST_MODE_MASK			0xF
+#define BIST_ENABLE			BIT(7)
+#define PD_MSG_BIST			0x3
+#define PD_BIST_TEST_DATA_MODE		0x8
+
+#define USB_PDPHY_TX_BUFFER_HDR_REG	0x60
+#define USB_PDPHY_TX_BUFFER_DATA_REG	0x62
+
+#define USB_PDPHY_RX_BUFFER_REG		0x80
+
+/* VDD regulator */
+#define VDD_PDPHY_VOL_MIN		2800000	/* uV */
+#define VDD_PDPHY_VOL_MAX		3300000	/* uV */
+#define VDD_PDPHY_HPM_LOAD		3000	/* uA */
+
+/* Message Spec Rev field */
+#define PD_MSG_HDR_REV(hdr)		(((hdr) >> 6) & 3)
+
+/* timers */
+#define RECEIVER_RESPONSE_TIME		15	/* tReceiverResponse */
+#define HARD_RESET_COMPLETE_TIME	5	/* tHardResetComplete */
+
+/* Interrupt numbers */
+#define PMIC_PDPHY_SIG_TX_IRQ		0x0
+#define PMIC_PDPHY_SIG_RX_IRQ		0x1
+#define PMIC_PDPHY_MSG_TX_IRQ		0x2
+#define PMIC_PDPHY_MSG_RX_IRQ		0x3
+#define PMIC_PDPHY_MSG_TX_FAIL_IRQ	0x4
+#define PMIC_PDPHY_MSG_TX_DISCARD_IRQ	0x5
+#define PMIC_PDPHY_MSG_RX_DISCARD_IRQ	0x6
+#define PMIC_PDPHY_FR_SWAP_IRQ		0x7
+
+/* Resources */
+#define PMIC_PDPHY_MAX_IRQS		0x08
+
+struct pmic_typec_pdphy_irq_params {
+	int				virq;
+	char				*irq_name;
+};
+
+struct pmic_typec_pdphy_resources {
+	unsigned int				nr_irqs;
+	struct pmic_typec_pdphy_irq_params	irq_params[PMIC_PDPHY_MAX_IRQS];
+};
+
+/* API */
+struct pmic_typec_pdphy;
+
+struct pmic_typec_pdphy *qcom_pmic_typec_pdphy_alloc(struct device *dev);
+
+int qcom_pmic_typec_pdphy_probe(struct platform_device *pdev,
+				struct pmic_typec_pdphy *pmic_typec_pdphy,
+				struct pmic_typec_pdphy_resources *res,
+				struct regmap *regmap,
+				u32 base);
+
+int qcom_pmic_typec_pdphy_start(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				struct tcpm_port *tcpm_port);
+
+void qcom_pmic_typec_pdphy_stop(struct pmic_typec_pdphy *pmic_typec_pdphy);
+
+int qcom_pmic_typec_pdphy_set_roles(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				    bool power_role_src, bool data_role_host);
+
+int qcom_pmic_typec_pdphy_set_pd_rx(struct pmic_typec_pdphy *pmic_typec_pdphy, bool on);
+
+int qcom_pmic_typec_pdphy_pd_transmit(struct pmic_typec_pdphy *pmic_typec_pdphy,
+				      enum tcpm_transmit_type type,
+				      const struct pd_message *msg,
+				      unsigned int negotiated_rev);
+
+#endif /* __QCOM_PMIC_TYPEC_PDPHY_H__ */

drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/usb/tcpm.h>
+#include <linux/usb/typec_mux.h>
+#include <linux/workqueue.h>
+#include "qcom_pmic_typec_port.h"
+
+struct pmic_typec_port_irq_data {
+	int				virq;
+	int				irq;
+	struct pmic_typec_port		*pmic_typec_port;
+};
+
+struct pmic_typec_port {
+	struct device			*dev;
+	struct tcpm_port		*tcpm_port;
+	struct regmap			*regmap;
+	u32				base;
+	unsigned int			nr_irqs;
+	struct pmic_typec_port_irq_data	*irq_data;
+
+	struct regulator		*vdd_vbus;
+
+	int				cc;
+	bool				debouncing_cc;
+	struct delayed_work		cc_debounce_dwork;
+
+	spinlock_t			lock;	/* Register atomicity */
+};
+
+static const char * const typec_cc_status_name[] = {
+	[TYPEC_CC_OPEN]		= "Open",
+	[TYPEC_CC_RA]		= "Ra",
+	[TYPEC_CC_RD]		= "Rd",
+	[TYPEC_CC_RP_DEF]	= "Rp-def",
+	[TYPEC_CC_RP_1_5]	= "Rp-1.5",
+	[TYPEC_CC_RP_3_0]	= "Rp-3.0",
+};
+
+static const char *rp_unknown = "unknown";
+
+static const char *cc_to_name(enum typec_cc_status cc)
+{
+	if (cc > TYPEC_CC_RP_3_0)
+		return rp_unknown;
+
+	return typec_cc_status_name[cc];
+}
+
+static const char * const rp_sel_name[] = {
+	[TYPEC_SRC_RP_SEL_80UA]		= "Rp-def-80uA",
+	[TYPEC_SRC_RP_SEL_180UA]	= "Rp-1.5-180uA",
+	[TYPEC_SRC_RP_SEL_330UA]	= "Rp-3.0-330uA",
+};
+
+static const char *rp_sel_to_name(int rp_sel)
+{
+	if (rp_sel > TYPEC_SRC_RP_SEL_330UA)
+		return rp_unknown;
+
+	return rp_sel_name[rp_sel];
+}
+
+#define misc_to_cc(msic) !!(misc & CC_ORIENTATION) ? "cc1" : "cc2"
+#define misc_to_vconn(msic) !!(misc & CC_ORIENTATION) ? "cc2" : "cc1"
+
+static void qcom_pmic_typec_port_cc_debounce(struct work_struct *work)
+{
+	struct pmic_typec_port *pmic_typec_port =
+		container_of(work, struct pmic_typec_port, cc_debounce_dwork.work);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pmic_typec_port->lock, flags);
+	pmic_typec_port->debouncing_cc = false;
+	spin_unlock_irqrestore(&pmic_typec_port->lock, flags);
+
+	dev_dbg(pmic_typec_port->dev, "Debounce cc complete\n");
+}
+
+static irqreturn_t pmic_typec_port_isr(int irq, void *dev_id)
+{
+	struct pmic_typec_port_irq_data *irq_data = dev_id;
+	struct pmic_typec_port *pmic_typec_port = irq_data->pmic_typec_port;
+	u32 misc_stat;
+	bool vbus_change = false;
+	bool cc_change = false;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_port->lock, flags);
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG,
+			  &misc_stat);
+	if (ret)
+		goto done;
+
+	switch (irq_data->virq) {
+	case PMIC_TYPEC_VBUS_IRQ:
+		vbus_change = true;
+		break;
+	case PMIC_TYPEC_CC_STATE_IRQ:
+	case PMIC_TYPEC_ATTACH_DETACH_IRQ:
+		if (!pmic_typec_port->debouncing_cc)
+			cc_change = true;
+		break;
+	}
+
+done:
+	spin_unlock_irqrestore(&pmic_typec_port->lock, flags);
+
+	if (vbus_change)
+		tcpm_vbus_change(pmic_typec_port->tcpm_port);
+
+	if (cc_change)
+		tcpm_cc_change(pmic_typec_port->tcpm_port);
+
+	return IRQ_HANDLED;
+}
+
+int qcom_pmic_typec_port_get_vbus(struct pmic_typec_port *pmic_typec_port)
+{
+	struct device *dev = pmic_typec_port->dev;
+	unsigned int misc;
+	int ret;
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG,
+			  &misc);
+	if (ret)
+		misc = 0;
+
+	dev_dbg(dev, "get_vbus: 0x%08x detect %d\n", misc, !!(misc & TYPEC_VBUS_DETECT));
+
+	return !!(misc & TYPEC_VBUS_DETECT);
+}
+
+int qcom_pmic_typec_port_set_vbus(struct pmic_typec_port *pmic_typec_port, bool on)
+{
+	u32 sm_stat;
+	u32 val;
+	int ret;
+
+	if (on) {
+		ret = regulator_enable(pmic_typec_port->vdd_vbus);
+		if (ret)
+			return ret;
+
+		val = TYPEC_SM_VBUS_VSAFE5V;
+	} else {
+		ret = regulator_disable(pmic_typec_port->vdd_vbus);
+		if (ret)
+			return ret;
+
+		val = TYPEC_SM_VBUS_VSAFE0V;
+	}
+
+	/* Poll waiting for transition to required vSafe5V or vSafe0V */
+	ret = regmap_read_poll_timeout(pmic_typec_port->regmap,
+				       pmic_typec_port->base + TYPEC_SM_STATUS_REG,
+				       sm_stat, sm_stat & val,
+				       100, 250000);
+	if (ret)
+		dev_warn(pmic_typec_port->dev, "vbus vsafe%dv fail\n", on ? 5 : 0);
+
+	return 0;
+}
+
+int qcom_pmic_typec_port_get_cc(struct pmic_typec_port *pmic_typec_port,
+				enum typec_cc_status *cc1,
+				enum typec_cc_status *cc2)
+{
+	struct device *dev = pmic_typec_port->dev;
+	unsigned int misc, val;
+	bool attached;
+	int ret = 0;
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG, &misc);
+	if (ret)
+		goto done;
+
+	attached = !!(misc & CC_ATTACHED);
+
+	if (pmic_typec_port->debouncing_cc) {
+		ret = -EBUSY;
+		goto done;
+	}
+
+	*cc1 = TYPEC_CC_OPEN;
+	*cc2 = TYPEC_CC_OPEN;
+
+	if (!attached)
+		goto done;
+
+	if (misc & SNK_SRC_MODE) {
+		ret = regmap_read(pmic_typec_port->regmap,
+				  pmic_typec_port->base + TYPEC_SRC_STATUS_REG,
+				  &val);
+		if (ret)
+			goto done;
+		switch (val & DETECTED_SRC_TYPE_MASK) {
+		case SRC_RD_OPEN:
+			val = TYPEC_CC_RD;
+			break;
+		case SRC_RD_RA_VCONN:
+			val = TYPEC_CC_RD;
+			*cc1 = TYPEC_CC_RA;
+			*cc2 = TYPEC_CC_RA;
+			break;
+		default:
+			dev_warn(dev, "unexpected src status %.2x\n", val);
+			val = TYPEC_CC_RD;
+			break;
+		}
+	} else {
+		ret = regmap_read(pmic_typec_port->regmap,
+				  pmic_typec_port->base + TYPEC_SNK_STATUS_REG,
+				  &val);
+		if (ret)
+			goto done;
+		switch (val & DETECTED_SNK_TYPE_MASK) {
+		case SNK_RP_STD:
+			val = TYPEC_CC_RP_DEF;
+			break;
+		case SNK_RP_1P5:
+			val = TYPEC_CC_RP_1_5;
+			break;
+		case SNK_RP_3P0:
+			val = TYPEC_CC_RP_3_0;
+			break;
+		default:
+			dev_warn(dev, "unexpected snk status %.2x\n", val);
+			val = TYPEC_CC_RP_DEF;
+			break;
+		}
+		val = TYPEC_CC_RP_DEF;
+	}
+
+	if (misc & CC_ORIENTATION)
+		*cc2 = val;
+	else
+		*cc1 = val;
+
+done:
+	dev_dbg(dev, "get_cc: misc 0x%08x cc1 0x%08x %s cc2 0x%08x %s attached %d cc=%s\n",
+		misc, *cc1, cc_to_name(*cc1), *cc2, cc_to_name(*cc2), attached,
+		misc_to_cc(misc));
+
+	return ret;
+}
+
+static void qcom_pmic_set_cc_debounce(struct pmic_typec_port *pmic_typec_port)
+{
+	pmic_typec_port->debouncing_cc = true;
+	schedule_delayed_work(&pmic_typec_port->cc_debounce_dwork,
+			      msecs_to_jiffies(2));
+}
+
+int qcom_pmic_typec_port_set_cc(struct pmic_typec_port *pmic_typec_port,
+				enum typec_cc_status cc)
+{
+	struct device *dev = pmic_typec_port->dev;
+	unsigned int mode, currsrc;
+	unsigned int misc;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_port->lock, flags);
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG,
+			  &misc);
+	if (ret)
+		goto done;
+
+	mode = EN_SRC_ONLY;
+
+	switch (cc) {
+	case TYPEC_CC_OPEN:
+		currsrc = TYPEC_SRC_RP_SEL_80UA;
+		break;
+	case TYPEC_CC_RP_DEF:
+		currsrc = TYPEC_SRC_RP_SEL_80UA;
+		break;
+	case TYPEC_CC_RP_1_5:
+		currsrc = TYPEC_SRC_RP_SEL_180UA;
+		break;
+	case TYPEC_CC_RP_3_0:
+		currsrc = TYPEC_SRC_RP_SEL_330UA;
+		break;
+	case TYPEC_CC_RD:
+		currsrc = TYPEC_SRC_RP_SEL_80UA;
+		mode = EN_SNK_ONLY;
+		break;
+	default:
+		dev_warn(dev, "unexpected set_cc %d\n", cc);
+		ret = -EINVAL;
+		goto done;
+	}
+
+	if (mode == EN_SRC_ONLY) {
+		ret = regmap_write(pmic_typec_port->regmap,
+				   pmic_typec_port->base + TYPEC_CURRSRC_CFG_REG,
+				   currsrc);
+		if (ret)
+			goto done;
+	}
+
+	pmic_typec_port->cc = cc;
+	qcom_pmic_set_cc_debounce(pmic_typec_port);
+	ret = 0;
+
+done:
+	spin_unlock_irqrestore(&pmic_typec_port->lock, flags);
+
+	dev_dbg(dev, "set_cc: currsrc=%x %s mode %s debounce %d attached %d cc=%s\n",
+		currsrc, rp_sel_to_name(currsrc),
+		mode == EN_SRC_ONLY ? "EN_SRC_ONLY" : "EN_SNK_ONLY",
+		pmic_typec_port->debouncing_cc, !!(misc & CC_ATTACHED),
+		misc_to_cc(misc));
+
+	return ret;
+}
+
+int qcom_pmic_typec_port_set_vconn(struct pmic_typec_port *pmic_typec_port, bool on)
+{
+	struct device *dev = pmic_typec_port->dev;
+	unsigned int orientation, misc, mask, value;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pmic_typec_port->lock, flags);
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG, &misc);
+	if (ret)
+		goto done;
+
+	/* Set VCONN on the inversion of the active CC channel */
+	orientation = (misc & CC_ORIENTATION) ? 0 : VCONN_EN_ORIENTATION;
+	if (on) {
+		mask = VCONN_EN_ORIENTATION | VCONN_EN_VALUE;
+		value = orientation | VCONN_EN_VALUE | VCONN_EN_SRC;
+	} else {
+		mask = VCONN_EN_VALUE;
+		value = 0;
+	}
+
+	ret = regmap_update_bits(pmic_typec_port->regmap,
+				 pmic_typec_port->base + TYPEC_VCONN_CONTROL_REG,
+				 mask, value);
+done:
+	spin_unlock_irqrestore(&pmic_typec_port->lock, flags);
+
+	dev_dbg(dev, "set_vconn: orientation %d control 0x%08x state %s cc %s vconn %s\n",
+		orientation, value, on ? "on" : "off", misc_to_vconn(misc), misc_to_cc(misc));
+
+	return ret;
+}
+
+int qcom_pmic_typec_port_start_toggling(struct pmic_typec_port *pmic_typec_port,
+					enum typec_port_type port_type,
+					enum typec_cc_status cc)
+{
+	struct device *dev = pmic_typec_port->dev;
+	unsigned int misc;
+	u8 mode = 0;
+	unsigned long flags;
+	int ret;
+
+	switch (port_type) {
+	case TYPEC_PORT_SRC:
+		mode = EN_SRC_ONLY;
+		break;
+	case TYPEC_PORT_SNK:
+		mode = EN_SNK_ONLY;
+		break;
+	case TYPEC_PORT_DRP:
+		mode = EN_TRY_SNK;
+		break;
+	}
+
+	spin_lock_irqsave(&pmic_typec_port->lock, flags);
+
+	ret = regmap_read(pmic_typec_port->regmap,
+			  pmic_typec_port->base + TYPEC_MISC_STATUS_REG, &misc);
+	if (ret)
+		goto done;
+
+	dev_dbg(dev, "start_toggling: misc 0x%08x attached %d port_type %d current cc %d new %d\n",
+		misc, !!(misc & CC_ATTACHED), port_type, pmic_typec_port->cc, cc);
+
+	qcom_pmic_set_cc_debounce(pmic_typec_port);
+
+	/* force it to toggle at least once */
+	ret = regmap_write(pmic_typec_port->regmap,
+			   pmic_typec_port->base + TYPEC_MODE_CFG_REG,
+			   TYPEC_DISABLE_CMD);
+	if (ret)
+		goto done;
+
+	ret = regmap_write(pmic_typec_port->regmap,
+			   pmic_typec_port->base + TYPEC_MODE_CFG_REG,
+			   mode);
+done:
+	spin_unlock_irqrestore(&pmic_typec_port->lock, flags);
+
+	return ret;
+}
+
+#define TYPEC_INTR_EN_CFG_1_MASK		  \
+	(TYPEC_LEGACY_CABLE_INT_EN		| \
+	 TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN	| \
+	 TYPEC_TRYSOURCE_DETECT_INT_EN		| \
+	 TYPEC_TRYSINK_DETECT_INT_EN		| \
+	 TYPEC_CCOUT_DETACH_INT_EN		| \
+	 TYPEC_CCOUT_ATTACH_INT_EN		| \
+	 TYPEC_VBUS_DEASSERT_INT_EN		| \
+	 TYPEC_VBUS_ASSERT_INT_EN)
+
+#define TYPEC_INTR_EN_CFG_2_MASK \
+	(TYPEC_STATE_MACHINE_CHANGE_INT_EN | TYPEC_VBUS_ERROR_INT_EN | \
+	 TYPEC_DEBOUNCE_DONE_INT_EN)
+
+int qcom_pmic_typec_port_start(struct pmic_typec_port *pmic_typec_port,
+			       struct tcpm_port *tcpm_port)
+{
+	int i;
+	int mask;
+	int ret;
+
+	/* Configure interrupt sources */
+	ret = regmap_write(pmic_typec_port->regmap,
+			   pmic_typec_port->base + TYPEC_INTERRUPT_EN_CFG_1_REG,
+			   TYPEC_INTR_EN_CFG_1_MASK);
+	if (ret)
+		goto done;
+
+	ret = regmap_write(pmic_typec_port->regmap,
+			   pmic_typec_port->base + TYPEC_INTERRUPT_EN_CFG_2_REG,
+			   TYPEC_INTR_EN_CFG_2_MASK);
+	if (ret)
+		goto done;
+
+	/* start in TRY_SNK mode */
+	ret = regmap_write(pmic_typec_port->regmap,
+			   pmic_typec_port->base + TYPEC_MODE_CFG_REG, EN_TRY_SNK);
+	if (ret)
+		goto done;
+
+	/* Configure VCONN for software control */
+	ret = regmap_update_bits(pmic_typec_port->regmap,
+				 pmic_typec_port->base + TYPEC_VCONN_CONTROL_REG,
+				 VCONN_EN_SRC | VCONN_EN_VALUE, VCONN_EN_SRC);
+	if (ret)
+		goto done;
+
+	/* Set CC threshold to 1.6 Volts | tPDdebounce = 10-20ms */
+	mask = SEL_SRC_UPPER_REF | USE_TPD_FOR_EXITING_ATTACHSRC;
+	ret = regmap_update_bits(pmic_typec_port->regmap,
+				 pmic_typec_port->base + TYPEC_EXIT_STATE_CFG_REG,
+				 mask, mask);
+	if (ret)
+		goto done;
+
+	pmic_typec_port->tcpm_port = tcpm_port;
+
+	for (i = 0; i < pmic_typec_port->nr_irqs; i++)
+		enable_irq(pmic_typec_port->irq_data[i].irq);
+
+done:
+	return ret;
+}
+
+void qcom_pmic_typec_port_stop(struct pmic_typec_port *pmic_typec_port)
+{
+	int i;
+
+	for (i = 0; i < pmic_typec_port->nr_irqs; i++)
+		disable_irq(pmic_typec_port->irq_data[i].irq);
+}
+
+struct pmic_typec_port *qcom_pmic_typec_port_alloc(struct device *dev)
+{
+	return devm_kzalloc(dev, sizeof(struct pmic_typec_port), GFP_KERNEL);
+}
+
+int qcom_pmic_typec_port_probe(struct platform_device *pdev,
+			       struct pmic_typec_port *pmic_typec_port,
+			       struct pmic_typec_port_resources *res,
+			       struct regmap *regmap,
+			       u32 base)
+{
+	struct device *dev = &pdev->dev;
+	struct pmic_typec_port_irq_data *irq_data;
+	int i, ret, irq;
+
+	if (!res->nr_irqs || res->nr_irqs > PMIC_TYPEC_MAX_IRQS)
+		return -EINVAL;
+
+	irq_data = devm_kzalloc(dev, sizeof(*irq_data) * res->nr_irqs,
+				GFP_KERNEL);
+	if (!irq_data)
+		return -ENOMEM;
+
+	pmic_typec_port->vdd_vbus = devm_regulator_get(dev, "vdd-vbus");
+	if (IS_ERR(pmic_typec_port->vdd_vbus))
+		return PTR_ERR(pmic_typec_port->vdd_vbus);
+
+	pmic_typec_port->dev = dev;
+	pmic_typec_port->base = base;
+	pmic_typec_port->regmap = regmap;
+	pmic_typec_port->nr_irqs = res->nr_irqs;
+	pmic_typec_port->irq_data = irq_data;
+	spin_lock_init(&pmic_typec_port->lock);
+	INIT_DELAYED_WORK(&pmic_typec_port->cc_debounce_dwork,
+			  qcom_pmic_typec_port_cc_debounce);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	for (i = 0; i < res->nr_irqs; i++, irq_data++) {
+		irq = platform_get_irq_byname(pdev,
+					      res->irq_params[i].irq_name);
+		if (irq < 0)
+			return irq;
+
+		irq_data->pmic_typec_port = pmic_typec_port;
+		irq_data->irq = irq;
+		irq_data->virq = res->irq_params[i].virq;
+		ret = devm_request_threaded_irq(dev, irq, NULL, pmic_typec_port_isr,
+						IRQF_ONESHOT | IRQF_NO_AUTOEN,
+						res->irq_params[i].irq_name,
+						irq_data);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}

drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+#ifndef __QCOM_PMIC_TYPEC_H__
+#define __QCOM_PMIC_TYPEC_H__
+
+#include <linux/platform_device.h>
+#include <linux/usb/tcpm.h>
+
+#define TYPEC_SNK_STATUS_REG				0x06
+#define DETECTED_SNK_TYPE_MASK				GENMASK(6, 0)
+#define SNK_DAM_MASK					GENMASK(6, 4)
+#define SNK_DAM_500MA					BIT(6)
+#define SNK_DAM_1500MA					BIT(5)
+#define SNK_DAM_3000MA					BIT(4)
+#define SNK_RP_STD					BIT(3)
+#define SNK_RP_1P5					BIT(2)
+#define SNK_RP_3P0					BIT(1)
+#define SNK_RP_SHORT					BIT(0)
+
+#define TYPEC_SRC_STATUS_REG				0x08
+#define DETECTED_SRC_TYPE_MASK				GENMASK(4, 0)
+#define SRC_HIGH_BATT					BIT(5)
+#define SRC_DEBUG_ACCESS				BIT(4)
+#define SRC_RD_OPEN					BIT(3)
+#define SRC_RD_RA_VCONN					BIT(2)
+#define SRC_RA_OPEN					BIT(1)
+#define AUDIO_ACCESS_RA_RA				BIT(0)
+
+#define TYPEC_STATE_MACHINE_STATUS_REG			0x09
+#define TYPEC_ATTACH_DETACH_STATE			BIT(5)
+
+#define TYPEC_SM_STATUS_REG				0x0A
+#define TYPEC_SM_VBUS_VSAFE5V				BIT(5)
+#define TYPEC_SM_VBUS_VSAFE0V				BIT(6)
+#define TYPEC_SM_USBIN_LT_LV				BIT(7)
+
+#define TYPEC_MISC_STATUS_REG				0x0B
+#define TYPEC_WATER_DETECTION_STATUS			BIT(7)
+#define SNK_SRC_MODE					BIT(6)
+#define TYPEC_VBUS_DETECT				BIT(5)
+#define TYPEC_VBUS_ERROR_STATUS				BIT(4)
+#define TYPEC_DEBOUNCE_DONE				BIT(3)
+#define CC_ORIENTATION					BIT(1)
+#define CC_ATTACHED					BIT(0)
+
+#define LEGACY_CABLE_STATUS_REG				0x0D
+#define TYPEC_LEGACY_CABLE_STATUS			BIT(1)
+#define TYPEC_NONCOMP_LEGACY_CABLE_STATUS		BIT(0)
+
+#define TYPEC_U_USB_STATUS_REG				0x0F
+#define U_USB_GROUND_NOVBUS				BIT(6)
+#define U_USB_GROUND					BIT(4)
+#define U_USB_FMB1					BIT(3)
+#define U_USB_FLOAT1					BIT(2)
+#define U_USB_FMB2					BIT(1)
+#define U_USB_FLOAT2					BIT(0)
+
+#define TYPEC_MODE_CFG_REG				0x44
+#define TYPEC_TRY_MODE_MASK				GENMASK(4, 3)
+#define EN_TRY_SNK					BIT(4)
+#define EN_TRY_SRC					BIT(3)
+#define TYPEC_POWER_ROLE_CMD_MASK			GENMASK(2, 0)
+#define EN_SRC_ONLY					BIT(2)
+#define EN_SNK_ONLY					BIT(1)
+#define TYPEC_DISABLE_CMD				BIT(0)
+
+#define TYPEC_VCONN_CONTROL_REG				0x46
+#define VCONN_EN_ORIENTATION				BIT(2)
+#define VCONN_EN_VALUE					BIT(1)
+#define VCONN_EN_SRC					BIT(0)
+
+#define TYPEC_CCOUT_CONTROL_REG				0x48
+#define TYPEC_CCOUT_BUFFER_EN				BIT(2)
+#define TYPEC_CCOUT_VALUE				BIT(1)
+#define TYPEC_CCOUT_SRC					BIT(0)
+
+#define DEBUG_ACCESS_SRC_CFG_REG			0x4C
+#define EN_UNORIENTED_DEBUG_ACCESS_SRC			BIT(0)
+
+#define TYPE_C_CRUDE_SENSOR_CFG_REG			0x4e
+#define EN_SRC_CRUDE_SENSOR				BIT(1)
+#define EN_SNK_CRUDE_SENSOR				BIT(0)
+
+#define TYPEC_EXIT_STATE_CFG_REG			0x50
+#define BYPASS_VSAFE0V_DURING_ROLE_SWAP			BIT(3)
+#define SEL_SRC_UPPER_REF				BIT(2)
+#define USE_TPD_FOR_EXITING_ATTACHSRC			BIT(1)
+#define EXIT_SNK_BASED_ON_CC				BIT(0)
+
+#define TYPEC_CURRSRC_CFG_REG				0x52
+#define TYPEC_SRC_RP_SEL_330UA				BIT(1)
+#define TYPEC_SRC_RP_SEL_180UA				BIT(0)
+#define TYPEC_SRC_RP_SEL_80UA				0
+#define TYPEC_SRC_RP_SEL_MASK				GENMASK(1, 0)
+
+#define TYPEC_INTERRUPT_EN_CFG_1_REG			0x5E
+#define TYPEC_LEGACY_CABLE_INT_EN			BIT(7)
+#define TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN		BIT(6)
+#define TYPEC_TRYSOURCE_DETECT_INT_EN			BIT(5)
+#define TYPEC_TRYSINK_DETECT_INT_EN			BIT(4)
+#define TYPEC_CCOUT_DETACH_INT_EN			BIT(3)
+#define TYPEC_CCOUT_ATTACH_INT_EN			BIT(2)
+#define TYPEC_VBUS_DEASSERT_INT_EN			BIT(1)
+#define TYPEC_VBUS_ASSERT_INT_EN			BIT(0)
+
+#define TYPEC_INTERRUPT_EN_CFG_2_REG			0x60
+#define TYPEC_SRC_BATT_HPWR_INT_EN			BIT(6)
+#define MICRO_USB_STATE_CHANGE_INT_EN			BIT(5)
+#define TYPEC_STATE_MACHINE_CHANGE_INT_EN		BIT(4)
+#define TYPEC_DEBUG_ACCESS_DETECT_INT_EN		BIT(3)
+#define TYPEC_WATER_DETECTION_INT_EN			BIT(2)
+#define TYPEC_VBUS_ERROR_INT_EN				BIT(1)
+#define TYPEC_DEBOUNCE_DONE_INT_EN			BIT(0)
+
+#define TYPEC_DEBOUNCE_OPTION_REG			0x62
+#define REDUCE_TCCDEBOUNCE_TO_2MS			BIT(2)
+
+#define TYPE_C_SBU_CFG_REG				0x6A
+#define SEL_SBU1_ISRC_VAL				0x04
+#define SEL_SBU2_ISRC_VAL				0x01
+
+#define TYPEC_U_USB_CFG_REG				0x70
+#define EN_MICRO_USB_FACTORY_MODE			BIT(1)
+#define EN_MICRO_USB_MODE				BIT(0)
+
+#define TYPEC_PMI632_U_USB_WATER_PROTECTION_CFG_REG	0x72
+
+#define TYPEC_U_USB_WATER_PROTECTION_CFG_REG		0x73
+#define EN_MICRO_USB_WATER_PROTECTION			BIT(4)
+#define MICRO_USB_DETECTION_ON_TIME_CFG_MASK		GENMASK(3, 2)
+#define MICRO_USB_DETECTION_PERIOD_CFG_MASK		GENMASK(1, 0)
+
+#define TYPEC_PMI632_MICRO_USB_MODE_REG			0x73
+#define MICRO_USB_MODE_ONLY				BIT(0)
+
+/* Interrupt numbers */
+#define PMIC_TYPEC_OR_RID_IRQ				0x0
+#define PMIC_TYPEC_VPD_IRQ				0x1
+#define PMIC_TYPEC_CC_STATE_IRQ				0x2
+#define PMIC_TYPEC_VCONN_OC_IRQ				0x3
+#define PMIC_TYPEC_VBUS_IRQ				0x4
+#define PMIC_TYPEC_ATTACH_DETACH_IRQ			0x5
+#define PMIC_TYPEC_LEGACY_CABLE_IRQ			0x6
+#define PMIC_TYPEC_TRY_SNK_SRC_IRQ			0x7
+
+/* Resources */
+#define PMIC_TYPEC_MAX_IRQS				0x08
+
+struct pmic_typec_port_irq_params {
+	int				virq;
+	char				*irq_name;
+};
+
+struct pmic_typec_port_resources {
+	unsigned int				nr_irqs;
+	struct pmic_typec_port_irq_params	irq_params[PMIC_TYPEC_MAX_IRQS];
+};
+
+/* API */
+struct pmic_typec;
+
+struct pmic_typec_port *qcom_pmic_typec_port_alloc(struct device *dev);
+
+int qcom_pmic_typec_port_probe(struct platform_device *pdev,
+			       struct pmic_typec_port *pmic_typec_port,
+			       struct pmic_typec_port_resources *res,
+			       struct regmap *regmap,
+			       u32 base);
+
+int qcom_pmic_typec_port_start(struct pmic_typec_port *pmic_typec_port,
+			       struct tcpm_port *tcpm_port);
+
+void qcom_pmic_typec_port_stop(struct pmic_typec_port *pmic_typec_port);
+
+int qcom_pmic_typec_port_get_cc(struct pmic_typec_port *pmic_typec_port,
+				enum typec_cc_status *cc1,
+				enum typec_cc_status *cc2);
+
+int qcom_pmic_typec_port_set_cc(struct pmic_typec_port *pmic_typec_port,
+				enum typec_cc_status cc);
+
+int qcom_pmic_typec_port_get_vbus(struct pmic_typec_port *pmic_typec_port);
+
+int qcom_pmic_typec_port_set_vconn(struct pmic_typec_port *pmic_typec_port, bool on);
+
+int qcom_pmic_typec_port_start_toggling(struct pmic_typec_port *pmic_typec_port,
+					enum typec_port_type port_type,
+					enum typec_cc_status cc);
+
+int qcom_pmic_typec_port_set_vbus(struct pmic_typec_port *pmic_typec_port, bool on);
+
+#endif /* __QCOM_PMIC_TYPE_C_PORT_H__ */