usb: typec: wcove: start using tcpm for USB PD support

This patch makes the driver work with USB Type-C Port
Manager (tcpm.c) to provide USB PD functionality.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/Kconfig

@@ -16,8 +16,6 @@ if TYPEC_TCPM
 
 source "drivers/usb/typec/fusb302/Kconfig"
 
-endif
-
 config TYPEC_WCOVE
 	tristate "Intel WhiskeyCove PMIC USB Type-C PHY driver"
 	depends on ACPI
@@ -33,6 +31,8 @@ config TYPEC_WCOVE
 	  To compile this driver as module, choose M here: the module will be
 	  called typec_wcove
 
+endif
+
 source "drivers/usb/typec/ucsi/Kconfig"
 
 endmenu

drivers/usb/typec/typec_wcove.c

@@ -11,14 +11,13 @@
 
 #include <linux/acpi.h>
 #include <linux/module.h>
+#include <linux/usb/tcpm.h>
 #include <linux/interrupt.h>
-#include <linux/usb/typec.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/intel_soc_pmic.h>
 
 /* Register offsets */
 #define WCOVE_CHGRIRQ0		0x4e09
-#define WCOVE_PHYCTRL		0x5e07
 
 #define USBC_CONTROL1		0x7001
 #define USBC_CONTROL2		0x7002
@@ -28,22 +27,57 @@
 #define USBC_STATUS1		0x7007
 #define USBC_STATUS2		0x7008
 #define USBC_STATUS3		0x7009
+#define USBC_CC1		0x700a
+#define USBC_CC2		0x700b
+#define USBC_CC1_STATUS		0x700c
+#define USBC_CC2_STATUS		0x700d
 #define USBC_IRQ1		0x7015
 #define USBC_IRQ2		0x7016
 #define USBC_IRQMASK1		0x7017
 #define USBC_IRQMASK2		0x7018
+#define USBC_PDCFG2		0x701a
+#define USBC_PDCFG3		0x701b
+#define USBC_PDSTATUS		0x701c
+#define USBC_RXSTATUS		0x701d
+#define USBC_RXINFO		0x701e
+#define USBC_TXCMD		0x701f
+#define USBC_TXINFO		0x7020
+#define USBC_RX_DATA		0x7028
+#define USBC_TX_DATA		0x7047
 
 /* Register bits */
 
-#define USBC_CONTROL1_MODE_DRP(r)	(((r) & ~0x7) | 4)
+#define USBC_CONTROL1_MODE_MASK		0x3
+#define   USBC_CONTROL1_MODE_SNK	0
+#define   USBC_CONTROL1_MODE_SNKACC	1
+#define   USBC_CONTROL1_MODE_SRC	2
+#define   USBC_CONTROL1_MODE_SRCACC	3
+#define   USBC_CONTROL1_MODE_DRP	4
+#define   USBC_CONTROL1_MODE_DRPACC	5
+#define   USBC_CONTROL1_MODE_TEST	7
+#define USBC_CONTROL1_CURSRC_MASK	0xc
+#define   USBC_CONTROL1_CURSRC_UA_0	(0 << 3)
+#define   USBC_CONTROL1_CURSRC_UA_80	(1 << 3)
+#define   USBC_CONTROL1_CURSRC_UA_180	(2 << 3)
+#define   USBC_CONTROL1_CURSRC_UA_330	(3 << 3)
+#define USBC_CONTROL1_DRPTOGGLE_RANDOM	0xe0
 
 #define USBC_CONTROL2_UNATT_SNK		BIT(0)
 #define USBC_CONTROL2_UNATT_SRC		BIT(1)
 #define USBC_CONTROL2_DIS_ST		BIT(2)
 
+#define USBC_CONTROL3_DET_DIS		BIT(0)
 #define USBC_CONTROL3_PD_DIS		BIT(1)
+#define USBC_CONTROL3_RESETPHY		BIT(2)
 
+#define USBC_CC_CTRL_PU_EN		BIT(0)
 #define USBC_CC_CTRL_VCONN_EN		BIT(1)
+#define USBC_CC_CTRL_TX_EN		BIT(2)
+#define USBC_CC_CTRL_PD_EN		BIT(3)
+#define USBC_CC_CTRL_CDET_EN		BIT(4)
+#define USBC_CC_CTRL_RDET_EN		BIT(5)
+#define USBC_CC_CTRL_ADC_EN		BIT(6)
+#define USBC_CC_CTRL_VBUSOK		BIT(7)
 
 #define USBC_STATUS1_DET_ONGOING	BIT(6)
 #define USBC_STATUS1_RSLT(r)		((r) & 0xf)
@@ -61,6 +95,15 @@
 
 #define USBC_STATUS2_VBUS_REQ		BIT(5)
 
+#define UCSC_CC_STATUS_SNK_RP		BIT(0)
+#define UCSC_CC_STATUS_PWRDEFSNK	BIT(1)
+#define UCSC_CC_STATUS_PWR_1P5A_SNK	BIT(2)
+#define UCSC_CC_STATUS_PWR_3A_SNK	BIT(3)
+#define UCSC_CC_STATUS_SRC_RP		BIT(4)
+#define UCSC_CC_STATUS_RX(r)		(((r) >> 5) & 0x3)
+#define   USBC_CC_STATUS_RD		1
+#define   USBC_CC_STATUS_RA		2
+
 #define USBC_IRQ1_ADCDONE1		BIT(2)
 #define USBC_IRQ1_OVERTEMP		BIT(1)
 #define USBC_IRQ1_SHORT			BIT(0)
@@ -79,15 +122,44 @@
 				 USBC_IRQ2_RX_HR | USBC_IRQ2_RX_CR | \
 				 USBC_IRQ2_TX_SUCCESS | USBC_IRQ2_TX_FAIL)
 
+#define USBC_PDCFG2_SOP			BIT(0)
+#define USBC_PDCFG2_SOP_P		BIT(1)
+#define USBC_PDCFG2_SOP_PP		BIT(2)
+#define USBC_PDCFG2_SOP_P_DEBUG		BIT(3)
+#define USBC_PDCFG2_SOP_PP_DEBUG	BIT(4)
+
+#define USBC_PDCFG3_DATAROLE_SHIFT	1
+#define USBC_PDCFG3_SOP_SHIFT		2
+
+#define USBC_RXSTATUS_RXCLEAR		BIT(0)
+#define USBC_RXSTATUS_RXDATA		BIT(7)
+
+#define USBC_RXINFO_RXBYTES(i)		(((i) >> 3) & 0x1f)
+
+#define USBC_TXCMD_BUF_RDY		BIT(0)
+#define USBC_TXCMD_START		BIT(1)
+#define USBC_TXCMD_NOP			(0 << 5)
+#define USBC_TXCMD_MSG			(1 << 5)
+#define USBC_TXCMD_CR			(2 << 5)
+#define USBC_TXCMD_HR			(3 << 5)
+#define USBC_TXCMD_BIST			(4 << 5)
+
+#define USBC_TXINFO_RETRIES(d)		(d << 3)
+
 struct wcove_typec {
 	struct mutex lock; /* device lock */
 	struct device *dev;
 	struct regmap *regmap;
-	struct typec_port *port;
-	struct typec_capability cap;
-	struct typec_partner *partner;
+	guid_t guid;
+
+	bool vbus;
+
+	struct tcpc_dev tcpc;
+	struct tcpm_port *tcpm;
 };
 
+#define tcpc_to_wcove(_tcpc_) container_of(_tcpc_, struct wcove_typec, tcpc)
+
 enum wcove_typec_func {
 	WCOVE_FUNC_DRIVE_VBUS = 1,
 	WCOVE_FUNC_ORIENTATION,
@@ -105,8 +177,7 @@ enum wcove_typec_role {
 	WCOVE_ROLE_DEVICE,
 };
 
-static guid_t guid = GUID_INIT(0x482383f0, 0x2876, 0x4e49,
-			       0x86, 0x85, 0xdb, 0x66, 0x21, 0x1a, 0xf0, 0x37);
+#define WCOVE_DSM_UUID		"482383f0-2876-4e49-8685-db66211af037"
 
 static int wcove_typec_func(struct wcove_typec *wcove,
 			    enum wcove_typec_func func, int param)
@@ -118,7 +189,7 @@ static int wcove_typec_func(struct wcove_typec *wcove,
 	tmp.type = ACPI_TYPE_INTEGER;
 	tmp.integer.value = param;
 
-	obj = acpi_evaluate_dsm(ACPI_HANDLE(wcove->dev), &guid, 1, func,
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(wcove->dev), &wcove->guid, 1, func,
 				&argv4);
 	if (!obj) {
 		dev_err(wcove->dev, "%s: failed to evaluate _DSM\n", __func__);
@@ -129,158 +200,349 @@ static int wcove_typec_func(struct wcove_typec *wcove,
 	return 0;
 }
 
-static irqreturn_t wcove_typec_irq(int irq, void *data)
+static int wcove_init(struct tcpc_dev *tcpc)
 {
-	enum typec_role role = TYPEC_SINK;
-	struct typec_partner_desc partner;
-	struct wcove_typec *wcove = data;
-	unsigned int cc1_ctrl;
-	unsigned int cc2_ctrl;
-	unsigned int cc_irq1;
-	unsigned int cc_irq2;
-	unsigned int status1;
-	unsigned int status2;
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 	int ret;
 
-	mutex_lock(&wcove->lock);
-
-	ret = regmap_read(wcove->regmap, USBC_IRQ1, &cc_irq1);
+	/* Unmask everything */
+	ret = regmap_write(wcove->regmap, USBC_IRQMASK1, 0);
 	if (ret)
-		goto err;
+		return ret;
 
-	ret = regmap_read(wcove->regmap, USBC_IRQ2, &cc_irq2);
-	if (ret)
-		goto err;
+	return regmap_write(wcove->regmap, USBC_IRQMASK2, 0);
+}
 
-	ret = regmap_read(wcove->regmap, USBC_STATUS1, &status1);
-	if (ret)
-		goto err;
+static int wcove_get_vbus(struct tcpc_dev *tcpc)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+	unsigned int cc1ctrl;
+	int ret;
 
-	ret = regmap_read(wcove->regmap, USBC_STATUS2, &status2);
+	ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1ctrl);
 	if (ret)
-		goto err;
+		return ret;
 
-	ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1_ctrl);
-	if (ret)
-		goto err;
+	wcove->vbus = !!(cc1ctrl & USBC_CC_CTRL_VBUSOK);
 
-	ret = regmap_read(wcove->regmap, USBC_CC2_CTRL, &cc2_ctrl);
-	if (ret)
-		goto err;
+	return wcove->vbus;
+}
 
-	if (cc_irq1) {
-		if (cc_irq1 & USBC_IRQ1_OVERTEMP)
-			dev_err(wcove->dev, "VCONN Switch Over Temperature!\n");
-		if (cc_irq1 & USBC_IRQ1_SHORT)
-			dev_err(wcove->dev, "VCONN Switch Short Circuit!\n");
-		ret = regmap_write(wcove->regmap, USBC_IRQ1, cc_irq1);
-		if (ret)
-			goto err;
-	}
+static int wcove_set_vbus(struct tcpc_dev *tcpc, bool on, bool sink)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 
-	if (cc_irq2) {
-		ret = regmap_write(wcove->regmap, USBC_IRQ2, cc_irq2);
-		if (ret)
-			goto err;
-		/*
-		 * Ignoring any PD communication interrupts until the PD support
-		 * is available
-		 */
-		if (cc_irq2 & ~USBC_IRQ2_CC_CHANGE) {
-			dev_WARN(wcove->dev, "USB PD handling missing\n");
-			goto err;
+	return wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VBUS, on);
+}
+
+static int wcove_set_vconn(struct tcpc_dev *tcpc, bool on)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+
+	return wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, on);
+}
+
+static enum typec_cc_status wcove_to_typec_cc(unsigned int cc)
+{
+	if (cc & UCSC_CC_STATUS_SNK_RP) {
+		if (cc & UCSC_CC_STATUS_PWRDEFSNK)
+			return TYPEC_CC_RP_DEF;
+		else if (cc & UCSC_CC_STATUS_PWR_1P5A_SNK)
+			return TYPEC_CC_RP_1_5;
+		else if (cc & UCSC_CC_STATUS_PWR_3A_SNK)
+			return TYPEC_CC_RP_3_0;
+	} else {
+		switch (UCSC_CC_STATUS_RX(cc)) {
+		case USBC_CC_STATUS_RD:
+			return TYPEC_CC_RD;
+		case USBC_CC_STATUS_RA:
+			return TYPEC_CC_RA;
+		default:
+			break;
 		}
 	}
+	return TYPEC_CC_OPEN;
+}
 
-	if (status1 & USBC_STATUS1_DET_ONGOING)
-		goto out;
+static int wcove_get_cc(struct tcpc_dev *tcpc, enum typec_cc_status *cc1,
+			enum typec_cc_status *cc2)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+	unsigned int cc1_status;
+	unsigned int cc2_status;
+	int ret;
 
-	if (USBC_STATUS1_RSLT(status1) == USBC_RSLT_NOTHING) {
-		if (wcove->partner) {
-			typec_unregister_partner(wcove->partner);
-			wcove->partner = NULL;
-		}
+	ret = regmap_read(wcove->regmap, USBC_CC1_STATUS, &cc1_status);
+	if (ret)
+		return ret;
 
-		wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
-				 WCOVE_ORIENTATION_NORMAL);
+	ret = regmap_read(wcove->regmap, USBC_CC2_STATUS, &cc2_status);
+	if (ret)
+		return ret;
 
-		/* This makes sure the device controller is disconnected */
-		wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST);
+	*cc1 = wcove_to_typec_cc(cc1_status);
+	*cc2 = wcove_to_typec_cc(cc2_status);
 
-		/* Port to default role */
-		typec_set_data_role(wcove->port, TYPEC_DEVICE);
-		typec_set_pwr_role(wcove->port, TYPEC_SINK);
-		typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB);
+	return 0;
+}
 
-		goto out;
-	}
+static int wcove_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
+{
+	/* XXX: Relying on the HW FSM to configure things correctly for now */
+	return 0;
+}
 
-	if (wcove->partner)
-		goto out;
+static int wcove_set_polarity(struct tcpc_dev *tcpc, enum typec_cc_polarity pol)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 
-	switch (USBC_STATUS1_ORIENT(status1)) {
-	case USBC_ORIENT_NORMAL:
-		wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
-				 WCOVE_ORIENTATION_NORMAL);
-		break;
-	case USBC_ORIENT_REVERSE:
-		wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
-				 WCOVE_ORIENTATION_REVERSE);
-	default:
-		break;
+	return wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION, pol);
+}
+
+static int wcove_set_current_limit(struct tcpc_dev *tcpc, u32 max_ma, u32 mv)
+{
+	return 0;
+}
+
+static int wcove_set_roles(struct tcpc_dev *tcpc, bool attached,
+			   enum typec_role role, enum typec_data_role data)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+	unsigned int val;
+	int ret;
+
+	ret = wcove_typec_func(wcove, WCOVE_FUNC_ROLE, data == TYPEC_HOST ?
+			       WCOVE_ROLE_HOST : WCOVE_ROLE_DEVICE);
+	if (ret)
+		return ret;
+
+	val = role;
+	val |= data << USBC_PDCFG3_DATAROLE_SHIFT;
+	val |= PD_REV20 << USBC_PDCFG3_SOP_SHIFT;
+
+	return regmap_write(wcove->regmap, USBC_PDCFG3, val);
+}
+
+static int wcove_set_pd_rx(struct tcpc_dev *tcpc, bool on)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+
+	return regmap_write(wcove->regmap, USBC_PDCFG2,
+			    on ? USBC_PDCFG2_SOP : 0);
+}
+
+static int wcove_pd_transmit(struct tcpc_dev *tcpc,
+			     enum tcpm_transmit_type type,
+			     const struct pd_message *msg)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+	unsigned int info = 0;
+	unsigned int cmd;
+	int ret;
+
+	ret = regmap_read(wcove->regmap, USBC_TXCMD, &cmd);
+	if (ret)
+		return ret;
+
+	if (!(cmd & USBC_TXCMD_BUF_RDY)) {
+		dev_warn(wcove->dev, "%s: Last transmission still ongoing!",
+			 __func__);
+		return -EBUSY;
 	}
 
-	memset(&partner, 0, sizeof(partner));
+	if (msg) {
+		const u8 *data = (void *)msg;
+		int i;
+
+		for (i = 0; i < pd_header_cnt(msg->header) * 4 + 2; i++) {
+			ret = regmap_write(wcove->regmap, USBC_TX_DATA + i,
+					   data[i]);
+			if (ret)
+				return ret;
+		}
+	}
 
-	switch (USBC_STATUS1_RSLT(status1)) {
-	case USBC_RSLT_SRC_DEFAULT:
-		typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB);
+	switch (type) {
+	case TCPC_TX_SOP:
+	case TCPC_TX_SOP_PRIME:
+	case TCPC_TX_SOP_PRIME_PRIME:
+	case TCPC_TX_SOP_DEBUG_PRIME:
+	case TCPC_TX_SOP_DEBUG_PRIME_PRIME:
+		info = type + 1;
+		cmd = USBC_TXCMD_MSG;
 		break;
-	case USBC_RSLT_SRC_1_5A:
-		typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_1_5A);
+	case TCPC_TX_HARD_RESET:
+		cmd = USBC_TXCMD_HR;
 		break;
-	case USBC_RSLT_SRC_3_0A:
-		typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_3_0A);
+	case TCPC_TX_CABLE_RESET:
+		cmd = USBC_TXCMD_CR;
 		break;
-	case USBC_RSLT_SNK:
-		role = TYPEC_SOURCE;
+	case TCPC_TX_BIST_MODE_2:
+		cmd = USBC_TXCMD_BIST;
 		break;
-	case USBC_RSLT_DEBUG_ACC:
-		partner.accessory = TYPEC_ACCESSORY_DEBUG;
+	default:
+		return -EINVAL;
+	}
+
+	/* NOTE Setting maximum number of retries (7) */
+	ret = regmap_write(wcove->regmap, USBC_TXINFO,
+			   info | USBC_TXINFO_RETRIES(7));
+	if (ret)
+		return ret;
+
+	return regmap_write(wcove->regmap, USBC_TXCMD, cmd | USBC_TXCMD_START);
+}
+
+static int wcove_start_drp_toggling(struct tcpc_dev *tcpc,
+				    enum typec_cc_status cc)
+{
+	struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
+	unsigned int usbc_ctrl;
+
+	usbc_ctrl = USBC_CONTROL1_MODE_DRP | USBC_CONTROL1_DRPTOGGLE_RANDOM;
+
+	switch (cc) {
+	case TYPEC_CC_RP_1_5:
+		usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_180;
 		break;
-	case USBC_RSLT_AUDIO_ACC:
-		partner.accessory = TYPEC_ACCESSORY_AUDIO;
+	case TYPEC_CC_RP_3_0:
+		usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_330;
 		break;
 	default:
-		dev_WARN(wcove->dev, "%s Undefined result\n", __func__);
-		goto err;
+		usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_80;
+		break;
 	}
 
-	if (role == TYPEC_SINK) {
-		wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_DEVICE);
-		typec_set_data_role(wcove->port, TYPEC_DEVICE);
-		typec_set_pwr_role(wcove->port, TYPEC_SINK);
-	} else {
-		wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST);
-		typec_set_pwr_role(wcove->port, TYPEC_SOURCE);
-		typec_set_data_role(wcove->port, TYPEC_HOST);
+	return regmap_write(wcove->regmap, USBC_CONTROL1, usbc_ctrl);
+}
+
+static int wcove_read_rx_buffer(struct wcove_typec *wcove, void *msg)
+{
+	unsigned int info;
+	int ret;
+	int i;
+
+	ret = regmap_read(wcove->regmap, USBC_RXINFO, &info);
+	if (ret)
+		return ret;
+
+	/* FIXME: Check that USBC_RXINFO_RXBYTES(info) matches the header */
+
+	for (i = 0; i < USBC_RXINFO_RXBYTES(info); i++) {
+		ret = regmap_read(wcove->regmap, USBC_RX_DATA + i, msg + i);
+		if (ret)
+			return ret;
 	}
 
-	wcove->partner = typec_register_partner(wcove->port, &partner);
-	if (!wcove->partner)
-		dev_err(wcove->dev, "failed register partner\n");
-out:
-	/* If either CC pins is requesting VCONN, we turn it on */
-	if ((cc1_ctrl & USBC_CC_CTRL_VCONN_EN) ||
-	    (cc2_ctrl &	USBC_CC_CTRL_VCONN_EN))
-		wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, true);
-	else
+	return regmap_write(wcove->regmap, USBC_RXSTATUS,
+			    USBC_RXSTATUS_RXCLEAR);
+}
+
+static irqreturn_t wcove_typec_irq(int irq, void *data)
+{
+	struct wcove_typec *wcove = data;
+	unsigned int usbc_irq1;
+	unsigned int usbc_irq2;
+	unsigned int cc1ctrl;
+	int ret;
+
+	mutex_lock(&wcove->lock);
+
+	/* Read.. */
+	ret = regmap_read(wcove->regmap, USBC_IRQ1, &usbc_irq1);
+	if (ret)
+		goto err;
+
+	ret = regmap_read(wcove->regmap, USBC_IRQ2, &usbc_irq2);
+	if (ret)
+		goto err;
+
+	ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1ctrl);
+	if (ret)
+		goto err;
+
+	if (!wcove->tcpm)
+		goto err;
+
+	/* ..check.. */
+	if (usbc_irq1 & USBC_IRQ1_OVERTEMP) {
+		dev_err(wcove->dev, "VCONN Switch Over Temperature!\n");
+		wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false);
+		/* REVISIT: Report an error? */
+	}
+
+	if (usbc_irq1 & USBC_IRQ1_SHORT) {
+		dev_err(wcove->dev, "VCONN Switch Short Circuit!\n");
 		wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false);
+		/* REVISIT: Report an error? */
+	}
+
+	if (wcove->vbus != !!(cc1ctrl & USBC_CC_CTRL_VBUSOK))
+		tcpm_vbus_change(wcove->tcpm);
+
+	/* REVISIT: See if tcpm code can be made to consider Type-C HW FSMs */
+	if (usbc_irq2 & USBC_IRQ2_CC_CHANGE)
+		tcpm_cc_change(wcove->tcpm);
+
+	if (usbc_irq2 & USBC_IRQ2_RX_PD) {
+		unsigned int status;
+
+		/*
+		 * FIXME: Need to check if TX is ongoing and report
+		 * TX_DIREGARDED if needed?
+		 */
+
+		ret = regmap_read(wcove->regmap, USBC_RXSTATUS, &status);
+		if (ret)
+			goto err;
+
+		/* Flush all buffers */
+		while (status & USBC_RXSTATUS_RXDATA) {
+			struct pd_message msg;
+
+			ret = wcove_read_rx_buffer(wcove, &msg);
+			if (ret) {
+				dev_err(wcove->dev, "%s: RX read failed\n",
+					__func__);
+				goto err;
+			}
+
+			tcpm_pd_receive(wcove->tcpm, &msg);
+
+			ret = regmap_read(wcove->regmap, USBC_RXSTATUS,
+					  &status);
+			if (ret)
+				goto err;
+		}
+	}
+
+	if (usbc_irq2 & USBC_IRQ2_RX_HR)
+		tcpm_pd_hard_reset(wcove->tcpm);
+
+	/* REVISIT: if (usbc_irq2 & USBC_IRQ2_RX_CR) */
+
+	if (usbc_irq2 & USBC_IRQ2_TX_SUCCESS)
+		tcpm_pd_transmit_complete(wcove->tcpm, TCPC_TX_SUCCESS);
+
+	if (usbc_irq2 & USBC_IRQ2_TX_FAIL)
+		tcpm_pd_transmit_complete(wcove->tcpm, TCPC_TX_FAILED);
 
-	/* Relying on the FSM to know when we need to drive VBUS. */
-	wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VBUS,
-			 !!(status2 & USBC_STATUS2_VBUS_REQ));
 err:
+	/* ..and clear. */
+	if (usbc_irq1) {
+		ret = regmap_write(wcove->regmap, USBC_IRQ1, usbc_irq1);
+		if (ret)
+			dev_WARN(wcove->dev, "%s failed to clear IRQ1\n",
+				 __func__);
+	}
+
+	if (usbc_irq2) {
+		ret = regmap_write(wcove->regmap, USBC_IRQ2, usbc_irq2);
+		if (ret)
+			dev_WARN(wcove->dev, "%s failed to clear IRQ2\n",
+				 __func__);
+	}
+
 	/* REVISIT: Clear WhiskeyCove CHGR Type-C interrupt */
 	regmap_write(wcove->regmap, WCOVE_CHGRIRQ0, BIT(5));
 
@@ -288,11 +550,41 @@ static irqreturn_t wcove_typec_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+/*
+ * The following power levels should be safe to use with Joule board.
+ */
+static const u32 src_pdo[] = {
+	PDO_FIXED(5000, 1500, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |
+		  PDO_FIXED_USB_COMM),
+};
+
+static const u32 snk_pdo[] = {
+	PDO_FIXED(12000, 3000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |
+		  PDO_FIXED_USB_COMM),
+	PDO_BATT(4750, 12000, 15000),
+	PDO_VAR(4750, 12000, 3000),
+};
+
+static struct tcpc_config wcove_typec_config = {
+	.src_pdo = src_pdo,
+	.nr_src_pdo = ARRAY_SIZE(src_pdo),
+	.snk_pdo = snk_pdo,
+	.nr_snk_pdo = ARRAY_SIZE(snk_pdo),
+
+	.max_snk_mv = 12000,
+	.max_snk_ma = 3000,
+	.max_snk_mw = 36000,
+	.operating_snk_mw = 15000,
+
+	.type = TYPEC_PORT_DRP,
+	.default_role = TYPEC_SINK,
+};
+
 static int wcove_typec_probe(struct platform_device *pdev)
 {
 	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
 	struct wcove_typec *wcove;
-	unsigned int val;
+	int irq;
 	int ret;
 
 	wcove = devm_kzalloc(&pdev->dev, sizeof(*wcove), GFP_KERNEL);
@@ -303,43 +595,47 @@ static int wcove_typec_probe(struct platform_device *pdev)
 	wcove->dev = &pdev->dev;
 	wcove->regmap = pmic->regmap;
 
-	ret = regmap_irq_get_virq(pmic->irq_chip_data_chgr,
+	irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr,
 				  platform_get_irq(pdev, 0));
-	if (ret < 0)
-		return ret;
+	if (irq < 0)
+		return irq;
 
-	ret = devm_request_threaded_irq(&pdev->dev, ret, NULL,
-					wcove_typec_irq, IRQF_ONESHOT,
-					"wcove_typec", wcove);
+	ret = guid_parse(WCOVE_DSM_UUID, &wcove->guid);
 	if (ret)
 		return ret;
 
-	if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), &guid, 0, 0x1f)) {
+	if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), &wcove->guid, 0, 0x1f)) {
 		dev_err(&pdev->dev, "Missing _DSM functions\n");
 		return -ENODEV;
 	}
 
-	wcove->cap.type = TYPEC_PORT_DRP;
-	wcove->cap.revision = USB_TYPEC_REV_1_1;
-	wcove->cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
+	wcove->tcpc.init = wcove_init;
+	wcove->tcpc.get_vbus = wcove_get_vbus;
+	wcove->tcpc.set_vbus = wcove_set_vbus;
+	wcove->tcpc.set_cc = wcove_set_cc;
+	wcove->tcpc.get_cc = wcove_get_cc;
+	wcove->tcpc.set_polarity = wcove_set_polarity;
+	wcove->tcpc.set_vconn = wcove_set_vconn;
+	wcove->tcpc.set_current_limit = wcove_set_current_limit;
+	wcove->tcpc.start_drp_toggling = wcove_start_drp_toggling;
 
-	/* Make sure the PD PHY is disabled until USB PD is available */
-	regmap_read(wcove->regmap, USBC_CONTROL3, &val);
-	regmap_write(wcove->regmap, USBC_CONTROL3, val | USBC_CONTROL3_PD_DIS);
+	wcove->tcpc.set_pd_rx = wcove_set_pd_rx;
+	wcove->tcpc.set_roles = wcove_set_roles;
+	wcove->tcpc.pd_transmit = wcove_pd_transmit;
 
-	/* DRP mode without accessory support */
-	regmap_read(wcove->regmap, USBC_CONTROL1, &val);
-	regmap_write(wcove->regmap, USBC_CONTROL1, USBC_CONTROL1_MODE_DRP(val));
+	wcove->tcpc.config = &wcove_typec_config;
 
-	wcove->port = typec_register_port(&pdev->dev, &wcove->cap);
-	if (!wcove->port)
-		return -ENODEV;
+	wcove->tcpm = tcpm_register_port(wcove->dev, &wcove->tcpc);
+	if (IS_ERR(wcove->tcpm))
+		return PTR_ERR(wcove->tcpm);
 
-	/* Unmask everything */
-	regmap_read(wcove->regmap, USBC_IRQMASK1, &val);
-	regmap_write(wcove->regmap, USBC_IRQMASK1, val & ~USBC_IRQMASK1_ALL);
-	regmap_read(wcove->regmap, USBC_IRQMASK2, &val);
-	regmap_write(wcove->regmap, USBC_IRQMASK2, val & ~USBC_IRQMASK2_ALL);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+					wcove_typec_irq, IRQF_ONESHOT,
+					"wcove_typec", wcove);
+	if (ret) {
+		tcpm_unregister_port(wcove->tcpm);
+		return ret;
+	}
 
 	platform_set_drvdata(pdev, wcove);
 	return 0;
@@ -356,8 +652,8 @@ static int wcove_typec_remove(struct platform_device *pdev)
 	regmap_read(wcove->regmap, USBC_IRQMASK2, &val);
 	regmap_write(wcove->regmap, USBC_IRQMASK2, val | USBC_IRQMASK2_ALL);
 
-	typec_unregister_partner(wcove->partner);
-	typec_unregister_port(wcove->port);
+	tcpm_unregister_port(wcove->tcpm);
+
 	return 0;
 }