Merge branch 'next' into for-linus

Prepare input updates for 5.3 merge window.

7 files changed, 407 insertions, 15 deletions

diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index de15bf55895b..540e8cd16ee6 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -114,6 +114,14 @@ config EXTCON_PALMAS
 	  Say Y here to enable support for USB peripheral and USB host
 	  detection by palmas usb.
 
+config EXTCON_PTN5150
+	tristate "NXP PTN5150 CC LOGIC USB EXTCON support"
+	depends on I2C && (GPIOLIB || COMPILE_TEST)
+	select REGMAP_I2C
+	help
+	  Say Y here to enable support for USB peripheral and USB host
+	  detection by NXP PTN5150 CC (Configuration Channel) logic chip.
+
 config EXTCON_QCOM_SPMI_MISC
 	tristate "Qualcomm USB extcon support"
 	depends on ARCH_QCOM || COMPILE_TEST
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index 0888fdeded72..261ce4cfe209 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_EXTCON_MAX77693)	+= extcon-max77693.o
 obj-$(CONFIG_EXTCON_MAX77843)	+= extcon-max77843.o
 obj-$(CONFIG_EXTCON_MAX8997)	+= extcon-max8997.o
 obj-$(CONFIG_EXTCON_PALMAS)	+= extcon-palmas.o
+obj-$(CONFIG_EXTCON_PTN5150)	+= extcon-ptn5150.o
 obj-$(CONFIG_EXTCON_QCOM_SPMI_MISC) += extcon-qcom-spmi-misc.o
 obj-$(CONFIG_EXTCON_RT8973A)	+= extcon-rt8973a.o
 obj-$(CONFIG_EXTCON_SM5502)	+= extcon-sm5502.o
diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
index 22d2feb1f8bc..32f663436e6e 100644
--- a/drivers/extcon/extcon-max14577.c
+++ b/drivers/extcon/extcon-max14577.c
@@ -657,6 +657,8 @@ static int max14577_muic_probe(struct platform_device *pdev)
 	struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);
 	struct max14577_muic_info *info;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret;
 	int i;
 	u8 id;
@@ -725,8 +727,17 @@ static int max14577_muic_probe(struct platform_device *pdev)
 	info->path_uart = CTRL1_SW_UART;
 	delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 
-	/* Set initial path for UART */
-	max14577_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = max14577_bulk_read(info->max14577->regmap,
+			MAX14577_MUIC_REG_STATUS1, info->status, 2);
+	if (ret) {
+		dev_err(info->dev, "Cannot read STATUS registers\n");
+		return ret;
+	}
+	cable_type = max14577_muic_get_cable_type(info, MAX14577_CABLE_GROUP_ADC,
+					 &attached);
+	if (attached && cable_type == MAX14577_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max14577_muic_set_path(info, info->path_uart, true);
 
 	/* Check revision number of MUIC device*/
 	ret = max14577_read_reg(info->max14577->regmap,
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index a79537ebb671..32fc5a66ffa9 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -1072,6 +1072,8 @@ static int max77693_muic_probe(struct platform_device *pdev)
 	struct max77693_reg_data *init_data;
 	int num_init_data;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret;
 	int i;
 	unsigned int id;
@@ -1212,8 +1214,18 @@ static int max77693_muic_probe(struct platform_device *pdev)
 		delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 	}
 
-	/* Set initial path for UART */
-	 max77693_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = regmap_bulk_read(info->max77693->regmap_muic,
+			MAX77693_MUIC_REG_STATUS1, info->status, 2);
+	if (ret) {
+		dev_err(info->dev, "failed to read MUIC register\n");
+		return ret;
+	}
+	cable_type = max77693_muic_get_cable_type(info,
+					   MAX77693_CABLE_GROUP_ADC, &attached);
+	if (attached && (cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON ||
+			 cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF))
+		max77693_muic_set_path(info, info->path_uart, true);
 
 	/* Check revision number of MUIC device*/
 	ret = regmap_read(info->max77693->regmap_muic,
diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
index b98cbd0362f5..a343a6ef3506 100644
--- a/drivers/extcon/extcon-max77843.c
+++ b/drivers/extcon/extcon-max77843.c
@@ -812,6 +812,8 @@ static int max77843_muic_probe(struct platform_device *pdev)
 	struct max77693_dev *max77843 = dev_get_drvdata(pdev->dev.parent);
 	struct max77843_muic_info *info;
 	unsigned int id;
+	int cable_type;
+	bool attached;
 	int i, ret;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
@@ -856,9 +858,19 @@ static int max77843_muic_probe(struct platform_device *pdev)
 	/* Set ADC debounce time */
 	max77843_muic_set_debounce_time(info, MAX77843_DEBOUNCE_TIME_25MS);
 
-	/* Set initial path for UART */
-	max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART, true,
-			       false);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = regmap_bulk_read(max77843->regmap_muic,
+			MAX77843_MUIC_REG_STATUS1, info->status,
+			MAX77843_MUIC_STATUS_NUM);
+	if (ret) {
+		dev_err(info->dev, "Cannot read STATUS registers\n");
+		goto err_muic_irq;
+	}
+	cable_type = max77843_muic_get_cable_type(info, MAX77843_CABLE_GROUP_ADC,
+					 &attached);
+	if (attached && cable_type == MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART,
+				       true, false);
 
 	/* Check revision number of MUIC device */
 	ret = regmap_read(max77843->regmap_muic, MAX77843_MUIC_REG_ID, &id);
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index bdabb2479e0d..172e116ac1ce 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -311,12 +311,10 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
 {
 	int ret = 0;
 
-	if (usb_type == MAX8997_USB_HOST) {
-		ret = max8997_muic_set_path(info, info->path_usb, attached);
-		if (ret < 0) {
-			dev_err(info->dev, "failed to update muic register\n");
-			return ret;
-		}
+	ret = max8997_muic_set_path(info, info->path_usb, attached);
+	if (ret < 0) {
+		dev_err(info->dev, "failed to update muic register\n");
+		return ret;
 	}
 
 	switch (usb_type) {
@@ -632,6 +630,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
 	struct max8997_platform_data *pdata = dev_get_platdata(max8997->dev);
 	struct max8997_muic_info *info;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret, i;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_muic_info),
@@ -724,8 +724,17 @@ static int max8997_muic_probe(struct platform_device *pdev)
 		delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 	}
 
-	/* Set initial path for UART */
-	 max8997_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
+				2, info->status);
+	if (ret) {
+		dev_err(info->dev, "failed to read MUIC register\n");
+		return ret;
+	}
+	cable_type = max8997_muic_get_cable_type(info,
+					   MAX8997_CABLE_GROUP_ADC, &attached);
+	if (attached && cable_type == MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max8997_muic_set_path(info, info->path_uart, true);
 
 	/* Set ADC debounce time */
 	max8997_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c
new file mode 100644
index 000000000000..d1c997599390
--- /dev/null
+++ b/drivers/extcon/extcon-ptn5150.c
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// extcon-ptn5150.c - PTN5150 CC logic extcon driver to support USB detection
+//
+// Based on extcon-sm5502.c driver
+// Copyright (c) 2018-2019 by Vijai Kumar K
+// Author: Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/extcon-provider.h>
+#include <linux/gpio/consumer.h>
+
+/* PTN5150 registers */
+enum ptn5150_reg {
+	PTN5150_REG_DEVICE_ID = 0x01,
+	PTN5150_REG_CONTROL,
+	PTN5150_REG_INT_STATUS,
+	PTN5150_REG_CC_STATUS,
+	PTN5150_REG_CON_DET = 0x09,
+	PTN5150_REG_VCONN_STATUS,
+	PTN5150_REG_RESET,
+	PTN5150_REG_INT_MASK = 0x18,
+	PTN5150_REG_INT_REG_STATUS,
+	PTN5150_REG_END,
+};
+
+#define PTN5150_DFP_ATTACHED			0x1
+#define PTN5150_UFP_ATTACHED			0x2
+
+/* Define PTN5150 MASK/SHIFT constant */
+#define PTN5150_REG_DEVICE_ID_VENDOR_SHIFT	0
+#define PTN5150_REG_DEVICE_ID_VENDOR_MASK	\
+	(0x3 << PTN5150_REG_DEVICE_ID_VENDOR_SHIFT)
+
+#define PTN5150_REG_DEVICE_ID_VERSION_SHIFT	3
+#define PTN5150_REG_DEVICE_ID_VERSION_MASK	\
+	(0x1f << PTN5150_REG_DEVICE_ID_VERSION_SHIFT)
+
+#define PTN5150_REG_CC_PORT_ATTACHMENT_SHIFT	2
+#define PTN5150_REG_CC_PORT_ATTACHMENT_MASK	\
+	(0x7 << PTN5150_REG_CC_PORT_ATTACHMENT_SHIFT)
+
+#define PTN5150_REG_CC_VBUS_DETECTION_SHIFT	7
+#define PTN5150_REG_CC_VBUS_DETECTION_MASK	\
+	(0x1 << PTN5150_REG_CC_VBUS_DETECTION_SHIFT)
+
+#define PTN5150_REG_INT_CABLE_ATTACH_SHIFT	0
+#define PTN5150_REG_INT_CABLE_ATTACH_MASK	\
+	(0x1 << PTN5150_REG_INT_CABLE_ATTACH_SHIFT)
+
+#define PTN5150_REG_INT_CABLE_DETACH_SHIFT	1
+#define PTN5150_REG_INT_CABLE_DETACH_MASK	\
+	(0x1 << PTN5150_REG_CC_CABLE_DETACH_SHIFT)
+
+struct ptn5150_info {
+	struct device *dev;
+	struct extcon_dev *edev;
+	struct i2c_client *i2c;
+	struct regmap *regmap;
+	struct gpio_desc *int_gpiod;
+	struct gpio_desc *vbus_gpiod;
+	int irq;
+	struct work_struct irq_work;
+	struct mutex mutex;
+};
+
+/* List of detectable cables */
+static const unsigned int ptn5150_extcon_cable[] = {
+	EXTCON_USB,
+	EXTCON_USB_HOST,
+	EXTCON_NONE,
+};
+
+static const struct regmap_config ptn5150_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.max_register	= PTN5150_REG_END,
+};
+
+static void ptn5150_irq_work(struct work_struct *work)
+{
+	struct ptn5150_info *info = container_of(work,
+			struct ptn5150_info, irq_work);
+	int ret = 0;
+	unsigned int reg_data;
+	unsigned int int_status;
+
+	if (!info->edev)
+		return;
+
+	mutex_lock(&info->mutex);
+
+	ret = regmap_read(info->regmap, PTN5150_REG_CC_STATUS, &reg_data);
+	if (ret) {
+		dev_err(info->dev, "failed to read CC STATUS %d\n", ret);
+		mutex_unlock(&info->mutex);
+		return;
+	}
+
+	/* Clear interrupt. Read would clear the register */
+	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &int_status);
+	if (ret) {
+		dev_err(info->dev, "failed to read INT STATUS %d\n", ret);
+		mutex_unlock(&info->mutex);
+		return;
+	}
+
+	if (int_status) {
+		unsigned int cable_attach;
+
+		cable_attach = int_status & PTN5150_REG_INT_CABLE_ATTACH_MASK;
+		if (cable_attach) {
+			unsigned int port_status;
+			unsigned int vbus;
+
+			port_status = ((reg_data &
+					PTN5150_REG_CC_PORT_ATTACHMENT_MASK) >>
+					PTN5150_REG_CC_PORT_ATTACHMENT_SHIFT);
+
+			switch (port_status) {
+			case PTN5150_DFP_ATTACHED:
+				extcon_set_state_sync(info->edev,
+						EXTCON_USB_HOST, false);
+				gpiod_set_value(info->vbus_gpiod, 0);
+				extcon_set_state_sync(info->edev, EXTCON_USB,
+						true);
+				break;
+			case PTN5150_UFP_ATTACHED:
+				extcon_set_state_sync(info->edev, EXTCON_USB,
+						false);
+				vbus = ((reg_data &
+					PTN5150_REG_CC_VBUS_DETECTION_MASK) >>
+					PTN5150_REG_CC_VBUS_DETECTION_SHIFT);
+				if (vbus)
+					gpiod_set_value(info->vbus_gpiod, 0);
+				else
+					gpiod_set_value(info->vbus_gpiod, 1);
+
+				extcon_set_state_sync(info->edev,
+						EXTCON_USB_HOST, true);
+				break;
+			default:
+				dev_err(info->dev,
+					"Unknown Port status : %x\n",
+					port_status);
+				break;
+			}
+		} else {
+			extcon_set_state_sync(info->edev,
+					EXTCON_USB_HOST, false);
+			extcon_set_state_sync(info->edev,
+					EXTCON_USB, false);
+			gpiod_set_value(info->vbus_gpiod, 0);
+		}
+	}
+
+	/* Clear interrupt. Read would clear the register */
+	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS,
+			&int_status);
+	if (ret) {
+		dev_err(info->dev,
+			"failed to read INT REG STATUS %d\n", ret);
+		mutex_unlock(&info->mutex);
+		return;
+	}
+
+	mutex_unlock(&info->mutex);
+}
+
+
+static irqreturn_t ptn5150_irq_handler(int irq, void *data)
+{
+	struct ptn5150_info *info = data;
+
+	schedule_work(&info->irq_work);
+
+	return IRQ_HANDLED;
+}
+
+static int ptn5150_init_dev_type(struct ptn5150_info *info)
+{
+	unsigned int reg_data, vendor_id, version_id;
+	int ret;
+
+	ret = regmap_read(info->regmap, PTN5150_REG_DEVICE_ID, &reg_data);
+	if (ret) {
+		dev_err(info->dev, "failed to read DEVICE_ID %d\n", ret);
+		return -EINVAL;
+	}
+
+	vendor_id = ((reg_data & PTN5150_REG_DEVICE_ID_VENDOR_MASK) >>
+				PTN5150_REG_DEVICE_ID_VENDOR_SHIFT);
+	version_id = ((reg_data & PTN5150_REG_DEVICE_ID_VERSION_MASK) >>
+				PTN5150_REG_DEVICE_ID_VERSION_SHIFT);
+
+	dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
+			    version_id, vendor_id);
+
+	/* Clear any existing interrupts */
+	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &reg_data);
+	if (ret) {
+		dev_err(info->dev,
+			"failed to read PTN5150_REG_INT_STATUS %d\n",
+			ret);
+		return -EINVAL;
+	}
+
+	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS, &reg_data);
+	if (ret) {
+		dev_err(info->dev,
+			"failed to read PTN5150_REG_INT_REG_STATUS %d\n", ret);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ptn5150_i2c_probe(struct i2c_client *i2c,
+				 const struct i2c_device_id *id)
+{
+	struct device *dev = &i2c->dev;
+	struct device_node *np = i2c->dev.of_node;
+	struct ptn5150_info *info;
+	int ret;
+
+	if (!np)
+		return -EINVAL;
+
+	info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+	i2c_set_clientdata(i2c, info);
+
+	info->dev = &i2c->dev;
+	info->i2c = i2c;
+	info->int_gpiod = devm_gpiod_get(&i2c->dev, "int", GPIOD_IN);
+	if (IS_ERR(info->int_gpiod)) {
+		dev_err(dev, "failed to get INT GPIO\n");
+		return PTR_ERR(info->int_gpiod);
+	}
+	info->vbus_gpiod = devm_gpiod_get(&i2c->dev, "vbus", GPIOD_IN);
+	if (IS_ERR(info->vbus_gpiod)) {
+		dev_err(dev, "failed to get VBUS GPIO\n");
+		return PTR_ERR(info->vbus_gpiod);
+	}
+	ret = gpiod_direction_output(info->vbus_gpiod, 0);
+	if (ret) {
+		dev_err(dev, "failed to set VBUS GPIO direction\n");
+		return -EINVAL;
+	}
+
+	mutex_init(&info->mutex);
+
+	INIT_WORK(&info->irq_work, ptn5150_irq_work);
+
+	info->regmap = devm_regmap_init_i2c(i2c, &ptn5150_regmap_config);
+	if (IS_ERR(info->regmap)) {
+		ret = PTR_ERR(info->regmap);
+		dev_err(info->dev, "failed to allocate register map: %d\n",
+				   ret);
+		return ret;
+	}
+
+	if (info->int_gpiod) {
+		info->irq = gpiod_to_irq(info->int_gpiod);
+		if (info->irq < 0) {
+			dev_err(dev, "failed to get INTB IRQ\n");
+			return info->irq;
+		}
+
+		ret = devm_request_threaded_irq(dev, info->irq, NULL,
+						ptn5150_irq_handler,
+						IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
+						i2c->name, info);
+		if (ret < 0) {
+			dev_err(dev, "failed to request handler for INTB IRQ\n");
+			return ret;
+		}
+	}
+
+	/* Allocate extcon device */
+	info->edev = devm_extcon_dev_allocate(info->dev, ptn5150_extcon_cable);
+	if (IS_ERR(info->edev)) {
+		dev_err(info->dev, "failed to allocate memory for extcon\n");
+		return -ENOMEM;
+	}
+
+	/* Register extcon device */
+	ret = devm_extcon_dev_register(info->dev, info->edev);
+	if (ret) {
+		dev_err(info->dev, "failed to register extcon device\n");
+		return ret;
+	}
+
+	/* Initialize PTN5150 device and print vendor id and version id */
+	ret = ptn5150_init_dev_type(info);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct of_device_id ptn5150_dt_match[] = {
+	{ .compatible = "nxp,ptn5150" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ptn5150_dt_match);
+
+static const struct i2c_device_id ptn5150_i2c_id[] = {
+	{ "ptn5150", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ptn5150_i2c_id);
+
+static struct i2c_driver ptn5150_i2c_driver = {
+	.driver		= {
+		.name	= "ptn5150",
+		.of_match_table = ptn5150_dt_match,
+	},
+	.probe	= ptn5150_i2c_probe,
+	.id_table = ptn5150_i2c_id,
+};
+
+static int __init ptn5150_i2c_init(void)
+{
+	return i2c_add_driver(&ptn5150_i2c_driver);
+}
+subsys_initcall(ptn5150_i2c_init);
+
+MODULE_DESCRIPTION("NXP PTN5150 CC logic Extcon driver");
+MODULE_AUTHOR("Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>");
+MODULE_LICENSE("GPL v2");