1 files changed, 86 insertions, 30 deletions

diff --git a/drivers/extcon/extcon-qcom-spmi-misc.c b/drivers/extcon/extcon-qcom-spmi-misc.c
index 6b836ae62176..eb02cb962b5e 100644
--- a/drivers/extcon/extcon-qcom-spmi-misc.c
+++ b/drivers/extcon/extcon-qcom-spmi-misc.c
@@ -1,12 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /**
  * extcon-qcom-spmi-misc.c - Qualcomm USB extcon driver to support USB ID
- *				detection based on extcon-usb-gpio.c.
+ *			and VBUS detection based on extcon-usb-gpio.c.
  *
  * Copyright (C) 2016 Linaro, Ltd.
  * Stephen Boyd <stephen.boyd@linaro.org>
  */
 
+#include <linux/devm-helpers.h>
 #include <linux/extcon-provider.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -21,30 +22,56 @@
 
 struct qcom_usb_extcon_info {
 	struct extcon_dev *edev;
-	int irq;
+	int id_irq;
+	int vbus_irq;
 	struct delayed_work wq_detcable;
 	unsigned long debounce_jiffies;
 };
 
 static const unsigned int qcom_usb_extcon_cable[] = {
+	EXTCON_USB,
 	EXTCON_USB_HOST,
 	EXTCON_NONE,
 };
 
 static void qcom_usb_extcon_detect_cable(struct work_struct *work)
 {
-	bool id;
+	bool state = false;
 	int ret;
+	union extcon_property_value val;
 	struct qcom_usb_extcon_info *info = container_of(to_delayed_work(work),
 						    struct qcom_usb_extcon_info,
 						    wq_detcable);
 
-	/* check ID and update cable state */
-	ret = irq_get_irqchip_state(info->irq, IRQCHIP_STATE_LINE_LEVEL, &id);
-	if (ret)
-		return;
+	if (info->id_irq > 0) {
+		/* check ID and update cable state */
+		ret = irq_get_irqchip_state(info->id_irq,
+				IRQCHIP_STATE_LINE_LEVEL, &state);
+		if (ret)
+			return;
+
+		if (!state) {
+			val.intval = true;
+			extcon_set_property(info->edev, EXTCON_USB_HOST,
+						EXTCON_PROP_USB_SS, val);
+		}
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, !state);
+	}
 
-	extcon_set_state_sync(info->edev, EXTCON_USB_HOST, !id);
+	if (info->vbus_irq > 0) {
+		/* check VBUS and update cable state */
+		ret = irq_get_irqchip_state(info->vbus_irq,
+				IRQCHIP_STATE_LINE_LEVEL, &state);
+		if (ret)
+			return;
+
+		if (state) {
+			val.intval = true;
+			extcon_set_property(info->edev, EXTCON_USB,
+						EXTCON_PROP_USB_SS, val);
+		}
+		extcon_set_state_sync(info->edev, EXTCON_USB, state);
+	}
 }
 
 static irqreturn_t qcom_usb_irq_handler(int irq, void *dev_id)
@@ -79,21 +106,52 @@ static int qcom_usb_extcon_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	ret = extcon_set_property_capability(info->edev,
+			EXTCON_USB, EXTCON_PROP_USB_SS);
+	ret |= extcon_set_property_capability(info->edev,
+			EXTCON_USB_HOST, EXTCON_PROP_USB_SS);
+	if (ret) {
+		dev_err(dev, "failed to register extcon props rc=%d\n",
+						ret);
+		return ret;
+	}
+
 	info->debounce_jiffies = msecs_to_jiffies(USB_ID_DEBOUNCE_MS);
-	INIT_DELAYED_WORK(&info->wq_detcable, qcom_usb_extcon_detect_cable);
 
-	info->irq = platform_get_irq_byname(pdev, "usb_id");
-	if (info->irq < 0)
-		return info->irq;
+	ret = devm_delayed_work_autocancel(dev, &info->wq_detcable,
+					   qcom_usb_extcon_detect_cable);
+	if (ret)
+		return ret;
 
-	ret = devm_request_threaded_irq(dev, info->irq, NULL,
+	info->id_irq = platform_get_irq_byname(pdev, "usb_id");
+	if (info->id_irq > 0) {
+		ret = devm_request_threaded_irq(dev, info->id_irq, NULL,
 					qcom_usb_irq_handler,
 					IRQF_TRIGGER_RISING |
 					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
 					pdev->name, info);
-	if (ret < 0) {
-		dev_err(dev, "failed to request handler for ID IRQ\n");
-		return ret;
+		if (ret < 0) {
+			dev_err(dev, "failed to request handler for ID IRQ\n");
+			return ret;
+		}
+	}
+
+	info->vbus_irq = platform_get_irq_byname(pdev, "usb_vbus");
+	if (info->vbus_irq > 0) {
+		ret = devm_request_threaded_irq(dev, info->vbus_irq, NULL,
+					qcom_usb_irq_handler,
+					IRQF_TRIGGER_RISING |
+					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					pdev->name, info);
+		if (ret < 0) {
+			dev_err(dev, "failed to request handler for VBUS IRQ\n");
+			return ret;
+		}
+	}
+
+	if (info->id_irq < 0 && info->vbus_irq < 0) {
+		dev_err(dev, "ID and VBUS IRQ not found\n");
+		return -EINVAL;
 	}
 
 	platform_set_drvdata(pdev, info);
@@ -105,23 +163,18 @@ static int qcom_usb_extcon_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int qcom_usb_extcon_remove(struct platform_device *pdev)
-{
-	struct qcom_usb_extcon_info *info = platform_get_drvdata(pdev);
-
-	cancel_delayed_work_sync(&info->wq_detcable);
-
-	return 0;
-}
-
 #ifdef CONFIG_PM_SLEEP
 static int qcom_usb_extcon_suspend(struct device *dev)
 {
 	struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
 	int ret = 0;
 
-	if (device_may_wakeup(dev))
-		ret = enable_irq_wake(info->irq);
+	if (device_may_wakeup(dev)) {
+		if (info->id_irq > 0)
+			ret = enable_irq_wake(info->id_irq);
+		if (info->vbus_irq > 0)
+			ret = enable_irq_wake(info->vbus_irq);
+	}
 
 	return ret;
 }
@@ -131,8 +184,12 @@ static int qcom_usb_extcon_resume(struct device *dev)
 	struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
 	int ret = 0;
 
-	if (device_may_wakeup(dev))
-		ret = disable_irq_wake(info->irq);
+	if (device_may_wakeup(dev)) {
+		if (info->id_irq > 0)
+			ret = disable_irq_wake(info->id_irq);
+		if (info->vbus_irq > 0)
+			ret = disable_irq_wake(info->vbus_irq);
+	}
 
 	return ret;
 }
@@ -149,7 +206,6 @@ MODULE_DEVICE_TABLE(of, qcom_usb_extcon_dt_match);
 
 static struct platform_driver qcom_usb_extcon_driver = {
 	.probe		= qcom_usb_extcon_probe,
-	.remove		= qcom_usb_extcon_remove,
 	.driver		= {
 		.name	= "extcon-pm8941-misc",
 		.pm	= &qcom_usb_extcon_pm_ops,