[linux-2.6-block.git] / drivers / extcon / extcon-ptn5150.c

// 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>
// Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>

#include <linux/bitfield.h>
#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>
#include <linux/usb/role.h>

/* PTN5150 registers */
#define PTN5150_REG_DEVICE_ID			0x01
#define PTN5150_REG_CONTROL			0x02
#define PTN5150_REG_INT_STATUS			0x03
#define PTN5150_REG_CC_STATUS			0x04
#define PTN5150_REG_CON_DET			0x09
#define PTN5150_REG_VCONN_STATUS		0x0a
#define PTN5150_REG_RESET			0x0b
#define PTN5150_REG_INT_MASK			0x18
#define PTN5150_REG_INT_REG_STATUS		0x19
#define PTN5150_REG_END				PTN5150_REG_INT_REG_STATUS

#define PTN5150_DFP_ATTACHED			0x1
#define PTN5150_UFP_ATTACHED			0x2

/* Define PTN5150 MASK/SHIFT constant */
#define PTN5150_REG_DEVICE_ID_VERSION		GENMASK(7, 3)
#define PTN5150_REG_DEVICE_ID_VENDOR		GENMASK(2, 0)

#define PTN5150_REG_CC_PORT_ATTACHMENT		GENMASK(4, 2)
#define PTN5150_REG_CC_VBUS_DETECTION		BIT(7)
#define PTN5150_REG_INT_CABLE_ATTACH_MASK	BIT(0)
#define PTN5150_REG_INT_CABLE_DETACH_MASK	BIT(1)

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;
	struct usb_role_switch *role_sw;
};

/* 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_check_state(struct ptn5150_info *info)
{
	unsigned int port_status, reg_data, vbus;
	enum usb_role usb_role = USB_ROLE_NONE;
	int ret;

	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);
		return;
	}

	port_status = FIELD_GET(PTN5150_REG_CC_PORT_ATTACHMENT, reg_data);

	switch (port_status) {
	case PTN5150_DFP_ATTACHED:
		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false);
		gpiod_set_value_cansleep(info->vbus_gpiod, 0);
		extcon_set_state_sync(info->edev, EXTCON_USB, true);
		usb_role = USB_ROLE_DEVICE;
		break;
	case PTN5150_UFP_ATTACHED:
		extcon_set_state_sync(info->edev, EXTCON_USB, false);
		vbus = FIELD_GET(PTN5150_REG_CC_VBUS_DETECTION, reg_data);
		if (vbus)
			gpiod_set_value_cansleep(info->vbus_gpiod, 0);
		else
			gpiod_set_value_cansleep(info->vbus_gpiod, 1);

		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true);
		usb_role = USB_ROLE_HOST;
		break;
	default:
		break;
	}

	if (usb_role) {
		ret = usb_role_switch_set_role(info->role_sw, usb_role);
		if (ret)
			dev_err(info->dev, "failed to set %s role: %d\n",
				usb_role_string(usb_role), ret);
	}
}

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 int_status;

	if (!info->edev)
		return;

	mutex_lock(&info->mutex);

	/* 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) {
			ptn5150_check_state(info);
		} else {
			extcon_set_state_sync(info->edev,
					EXTCON_USB_HOST, false);
			extcon_set_state_sync(info->edev,
					EXTCON_USB, false);
			gpiod_set_value_cansleep(info->vbus_gpiod, 0);

			ret = usb_role_switch_set_role(info->role_sw,
						       USB_ROLE_NONE);
			if (ret)
				dev_err(info->dev,
					"failed to set none role: %d\n",
					ret);
		}
	}

	/* 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 = FIELD_GET(PTN5150_REG_DEVICE_ID_VENDOR, reg_data);
	version_id = FIELD_GET(PTN5150_REG_DEVICE_ID_VERSION, reg_data);
	dev_dbg(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 void ptn5150_work_sync_and_put(void *data)
{
	struct ptn5150_info *info = data;

	cancel_work_sync(&info->irq_work);
	usb_role_switch_put(info->role_sw);
}

static int ptn5150_i2c_probe(struct i2c_client *i2c)
{
	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->vbus_gpiod = devm_gpiod_get(&i2c->dev, "vbus", GPIOD_OUT_LOW);
	if (IS_ERR(info->vbus_gpiod)) {
		ret = PTR_ERR(info->vbus_gpiod);
		if (ret == -ENOENT) {
			dev_info(dev, "No VBUS GPIO, ignoring VBUS control\n");
			info->vbus_gpiod = NULL;
		} else {
			return dev_err_probe(dev, ret, "failed to get VBUS GPIO\n");
		}
	}

	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)) {
		return dev_err_probe(info->dev, PTR_ERR(info->regmap),
				     "failed to allocate register map\n");
	}

	if (i2c->irq > 0) {
		info->irq = i2c->irq;
	} else {
		info->int_gpiod = devm_gpiod_get(&i2c->dev, "int", GPIOD_IN);
		if (IS_ERR(info->int_gpiod)) {
			return dev_err_probe(dev, PTR_ERR(info->int_gpiod),
					     "failed to get INT GPIO\n");
		}

		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;
	}

	extcon_set_property_capability(info->edev, EXTCON_USB,
					EXTCON_PROP_USB_VBUS);
	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
					EXTCON_PROP_USB_VBUS);
	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
					EXTCON_PROP_USB_TYPEC_POLARITY);

	/* Initialize PTN5150 device and print vendor id and version id */
	ret = ptn5150_init_dev_type(info);
	if (ret)
		return -EINVAL;

	info->role_sw = usb_role_switch_get(info->dev);
	if (IS_ERR(info->role_sw))
		return dev_err_probe(info->dev, PTR_ERR(info->role_sw),
				     "failed to get role switch\n");

	ret = devm_add_action_or_reset(dev, ptn5150_work_sync_and_put, info);
	if (ret)
		return ret;

	/*
	 * Update current extcon state if for example OTG connection was there
	 * before the probe
	 */
	mutex_lock(&info->mutex);
	ptn5150_check_state(info);
	mutex_unlock(&info->mutex);

	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,
};
module_i2c_driver(ptn5150_i2c_driver);

MODULE_DESCRIPTION("NXP PTN5150 CC logic Extcon driver");
MODULE_AUTHOR("Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>");
MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
4ed754de VK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// extcon-ptn5150.c - PTN5150 CC logic extcon driver to support USB detection
	4	//
	5	// Based on extcon-sm5502.c driver
	6	// Copyright (c) 2018-2019 by Vijai Kumar K
	7	// Author: Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>
85256f61	8	// Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
4ed754de	9
7e3b1caf	10	#include <linux/bitfield.h>
4ed754de VK	11	#include <linux/err.h>
	12	#include <linux/i2c.h>
	13	#include <linux/interrupt.h>
	14	#include <linux/kernel.h>
	15	#include <linux/module.h>
	16	#include <linux/regmap.h>
	17	#include <linux/slab.h>
	18	#include <linux/extcon-provider.h>
	19	#include <linux/gpio/consumer.h>
1bfcaa57	20	#include <linux/usb/role.h>
4ed754de VK	21
4ed754de VK	22	/* PTN5150 registers */
b9a32f62 KK	23	#define PTN5150_REG_DEVICE_ID 0x01
	24	#define PTN5150_REG_CONTROL 0x02
	25	#define PTN5150_REG_INT_STATUS 0x03
	26	#define PTN5150_REG_CC_STATUS 0x04
	27	#define PTN5150_REG_CON_DET 0x09
	28	#define PTN5150_REG_VCONN_STATUS 0x0a
	29	#define PTN5150_REG_RESET 0x0b
	30	#define PTN5150_REG_INT_MASK 0x18
	31	#define PTN5150_REG_INT_REG_STATUS 0x19
	32	#define PTN5150_REG_END PTN5150_REG_INT_REG_STATUS
4ed754de VK	33
	34	#define PTN5150_DFP_ATTACHED 0x1
	35	#define PTN5150_UFP_ATTACHED 0x2
	36
	37	/* Define PTN5150 MASK/SHIFT constant */
7e3b1caf RVM	38	#define PTN5150_REG_DEVICE_ID_VERSION GENMASK(7, 3)
7e3b1caf RVM	39	#define PTN5150_REG_DEVICE_ID_VENDOR GENMASK(2, 0)
4ed754de	40
7e3b1caf RVM	41	#define PTN5150_REG_CC_PORT_ATTACHMENT GENMASK(4, 2)
	42	#define PTN5150_REG_CC_VBUS_DETECTION BIT(7)
	43	#define PTN5150_REG_INT_CABLE_ATTACH_MASK BIT(0)
	44	#define PTN5150_REG_INT_CABLE_DETACH_MASK BIT(1)
4ed754de VK	45
	46	struct ptn5150_info {
	47	struct device *dev;
	48	struct extcon_dev *edev;
	49	struct i2c_client *i2c;
	50	struct regmap *regmap;
	51	struct gpio_desc *int_gpiod;
	52	struct gpio_desc *vbus_gpiod;
	53	int irq;
	54	struct work_struct irq_work;
	55	struct mutex mutex;
1bfcaa57	56	struct usb_role_switch *role_sw;
4ed754de VK	57	};
	58
	59	/* List of detectable cables */
	60	static const unsigned int ptn5150_extcon_cable[] = {
	61	EXTCON_USB,
	62	EXTCON_USB_HOST,
	63	EXTCON_NONE,
	64	};
	65
	66	static const struct regmap_config ptn5150_regmap_config = {
	67	.reg_bits = 8,
	68	.val_bits = 8,
	69	.max_register = PTN5150_REG_END,
	70	};
	71
85256f61 KK	72	static void ptn5150_check_state(struct ptn5150_info *info)
	73	{
	74	unsigned int port_status, reg_data, vbus;
1bfcaa57	75	enum usb_role usb_role = USB_ROLE_NONE;
85256f61 KK	76	int ret;
	77
	78	ret = regmap_read(info->regmap, PTN5150_REG_CC_STATUS, &reg_data);
	79	if (ret) {
	80	dev_err(info->dev, "failed to read CC STATUS %d\n", ret);
	81	return;
	82	}
	83
7e3b1caf	84	port_status = FIELD_GET(PTN5150_REG_CC_PORT_ATTACHMENT, reg_data);
85256f61 KK	85
	86	switch (port_status) {
	87	case PTN5150_DFP_ATTACHED:
	88	extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false);
	89	gpiod_set_value_cansleep(info->vbus_gpiod, 0);
	90	extcon_set_state_sync(info->edev, EXTCON_USB, true);
1bfcaa57	91	usb_role = USB_ROLE_DEVICE;
85256f61 KK	92	break;
	93	case PTN5150_UFP_ATTACHED:
	94	extcon_set_state_sync(info->edev, EXTCON_USB, false);
7e3b1caf	95	vbus = FIELD_GET(PTN5150_REG_CC_VBUS_DETECTION, reg_data);
85256f61 KK	96	if (vbus)
	97	gpiod_set_value_cansleep(info->vbus_gpiod, 0);
	98	else
	99	gpiod_set_value_cansleep(info->vbus_gpiod, 1);
	100
	101	extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true);
1bfcaa57	102	usb_role = USB_ROLE_HOST;
85256f61 KK	103	break;
85256f61 KK	104	default:
85256f61 KK	105	break;
85256f61 KK	106	}
1bfcaa57 LJ	107
	108	if (usb_role) {
	109	ret = usb_role_switch_set_role(info->role_sw, usb_role);
	110	if (ret)
	111	dev_err(info->dev, "failed to set %s role: %d\n",
	112	usb_role_string(usb_role), ret);
	113	}
85256f61 KK	114	}
85256f61 KK	115
4ed754de VK	116	static void ptn5150_irq_work(struct work_struct *work)
	117	{
	118	struct ptn5150_info *info = container_of(work,
	119	struct ptn5150_info, irq_work);
	120	int ret = 0;
4ed754de VK	121	unsigned int int_status;
	122
	123	if (!info->edev)
	124	return;
	125
	126	mutex_lock(&info->mutex);
	127
4ed754de VK	128	/* Clear interrupt. Read would clear the register */
	129	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &int_status);
	130	if (ret) {
	131	dev_err(info->dev, "failed to read INT STATUS %d\n", ret);
	132	mutex_unlock(&info->mutex);
	133	return;
	134	}
	135
	136	if (int_status) {
	137	unsigned int cable_attach;
	138
	139	cable_attach = int_status & PTN5150_REG_INT_CABLE_ATTACH_MASK;
	140	if (cable_attach) {
85256f61	141	ptn5150_check_state(info);
4ed754de VK	142	} else {
	143	extcon_set_state_sync(info->edev,
	144	EXTCON_USB_HOST, false);
	145	extcon_set_state_sync(info->edev,
	146	EXTCON_USB, false);
6aaad58c	147	gpiod_set_value_cansleep(info->vbus_gpiod, 0);
1bfcaa57 LJ	148
	149	ret = usb_role_switch_set_role(info->role_sw,
	150	USB_ROLE_NONE);
	151	if (ret)
	152	dev_err(info->dev,
	153	"failed to set none role: %d\n",
	154	ret);
4ed754de VK	155	}
	156	}
	157
	158	/* Clear interrupt. Read would clear the register */
	159	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS,
	160	&int_status);
	161	if (ret) {
	162	dev_err(info->dev,
	163	"failed to read INT REG STATUS %d\n", ret);
	164	mutex_unlock(&info->mutex);
	165	return;
	166	}
	167
	168	mutex_unlock(&info->mutex);
	169	}
	170
	171
	172	static irqreturn_t ptn5150_irq_handler(int irq, void *data)
	173	{
	174	struct ptn5150_info *info = data;
	175
	176	schedule_work(&info->irq_work);
	177
	178	return IRQ_HANDLED;
	179	}
	180
	181	static int ptn5150_init_dev_type(struct ptn5150_info *info)
	182	{
	183	unsigned int reg_data, vendor_id, version_id;
	184	int ret;
	185
	186	ret = regmap_read(info->regmap, PTN5150_REG_DEVICE_ID, &reg_data);
	187	if (ret) {
	188	dev_err(info->dev, "failed to read DEVICE_ID %d\n", ret);
	189	return -EINVAL;
	190	}
	191
7e3b1caf RVM	192	vendor_id = FIELD_GET(PTN5150_REG_DEVICE_ID_VENDOR, reg_data);
7e3b1caf RVM	193	version_id = FIELD_GET(PTN5150_REG_DEVICE_ID_VERSION, reg_data);
fa31f587 KK	194	dev_dbg(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
fa31f587 KK	195	version_id, vendor_id);
4ed754de VK	196
	197	/* Clear any existing interrupts */
	198	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &reg_data);
	199	if (ret) {
	200	dev_err(info->dev,
	201	"failed to read PTN5150_REG_INT_STATUS %d\n",
	202	ret);
	203	return -EINVAL;
	204	}
	205
	206	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS, &reg_data);
	207	if (ret) {
	208	dev_err(info->dev,
	209	"failed to read PTN5150_REG_INT_REG_STATUS %d\n", ret);
	210	return -EINVAL;
	211	}
	212
	213	return 0;
	214	}
	215
782cd939 LJ	216	static void ptn5150_work_sync_and_put(void *data)
	217	{
	218	struct ptn5150_info *info = data;
	219
	220	cancel_work_sync(&info->irq_work);
1bfcaa57	221	usb_role_switch_put(info->role_sw);
782cd939 LJ	222	}
782cd939 LJ	223
0b0549b6	224	static int ptn5150_i2c_probe(struct i2c_client *i2c)
4ed754de VK	225	{
	226	struct device *dev = &i2c->dev;
	227	struct device_node *np = i2c->dev.of_node;
	228	struct ptn5150_info *info;
	229	int ret;
	230
	231	if (!np)
	232	return -EINVAL;
	233
	234	info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
	235	if (!info)
	236	return -ENOMEM;
	237	i2c_set_clientdata(i2c, info);
	238
	239	info->dev = &i2c->dev;
	240	info->i2c = i2c;
e095882e	241	info->vbus_gpiod = devm_gpiod_get(&i2c->dev, "vbus", GPIOD_OUT_LOW);
3dfed895	242	if (IS_ERR(info->vbus_gpiod)) {
fbaf3b67 KK	243	ret = PTR_ERR(info->vbus_gpiod);
	244	if (ret == -ENOENT) {
	245	dev_info(dev, "No VBUS GPIO, ignoring VBUS control\n");
	246	info->vbus_gpiod = NULL;
	247	} else {
611e92a0	248	return dev_err_probe(dev, ret, "failed to get VBUS GPIO\n");
fbaf3b67	249	}
4ed754de	250	}
4ed754de VK	251
	252	mutex_init(&info->mutex);
	253
	254	INIT_WORK(&info->irq_work, ptn5150_irq_work);
	255
	256	info->regmap = devm_regmap_init_i2c(i2c, &ptn5150_regmap_config);
	257	if (IS_ERR(info->regmap)) {
611e92a0 AS	258	return dev_err_probe(info->dev, PTR_ERR(info->regmap),
611e92a0 AS	259	"failed to allocate register map\n");
4ed754de VK	260	}
4ed754de VK	261
45ce36f5 KK	262	if (i2c->irq > 0) {
	263	info->irq = i2c->irq;
	264	} else {
	265	info->int_gpiod = devm_gpiod_get(&i2c->dev, "int", GPIOD_IN);
	266	if (IS_ERR(info->int_gpiod)) {
611e92a0 AS	267	return dev_err_probe(dev, PTR_ERR(info->int_gpiod),
611e92a0 AS	268	"failed to get INT GPIO\n");
45ce36f5 KK	269	}
45ce36f5 KK	270
4ed754de VK	271	info->irq = gpiod_to_irq(info->int_gpiod);
	272	if (info->irq < 0) {
	273	dev_err(dev, "failed to get INTB IRQ\n");
	274	return info->irq;
	275	}
45ce36f5	276	}
4ed754de	277
45ce36f5 KK	278	ret = devm_request_threaded_irq(dev, info->irq, NULL,
	279	ptn5150_irq_handler,
	280	IRQF_TRIGGER_FALLING \|
	281	IRQF_ONESHOT,
	282	i2c->name, info);
	283	if (ret < 0) {
	284	dev_err(dev, "failed to request handler for INTB IRQ\n");
	285	return ret;
4ed754de VK	286	}
	287
	288	/* Allocate extcon device */
	289	info->edev = devm_extcon_dev_allocate(info->dev, ptn5150_extcon_cable);
	290	if (IS_ERR(info->edev)) {
	291	dev_err(info->dev, "failed to allocate memory for extcon\n");
	292	return -ENOMEM;
	293	}
	294
	295	/* Register extcon device */
	296	ret = devm_extcon_dev_register(info->dev, info->edev);
	297	if (ret) {
	298	dev_err(info->dev, "failed to register extcon device\n");
	299	return ret;
	300	}
	301
ea6a95d0 RVM	302	extcon_set_property_capability(info->edev, EXTCON_USB,
	303	EXTCON_PROP_USB_VBUS);
	304	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
	305	EXTCON_PROP_USB_VBUS);
	306	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
	307	EXTCON_PROP_USB_TYPEC_POLARITY);
	308
4ed754de VK	309	/* Initialize PTN5150 device and print vendor id and version id */
	310	ret = ptn5150_init_dev_type(info);
	311	if (ret)
	312	return -EINVAL;
	313
1bfcaa57 LJ	314	info->role_sw = usb_role_switch_get(info->dev);
	315	if (IS_ERR(info->role_sw))
	316	return dev_err_probe(info->dev, PTR_ERR(info->role_sw),
	317	"failed to get role switch\n");
	318
782cd939 LJ	319	ret = devm_add_action_or_reset(dev, ptn5150_work_sync_and_put, info);
	320	if (ret)
	321	return ret;
	322
85256f61 KK	323	/*
	324	* Update current extcon state if for example OTG connection was there
	325	* before the probe
	326	*/
	327	mutex_lock(&info->mutex);
	328	ptn5150_check_state(info);
	329	mutex_unlock(&info->mutex);
	330
4ed754de VK	331	return 0;
	332	}
	333
	334	static const struct of_device_id ptn5150_dt_match[] = {
	335	{ .compatible = "nxp,ptn5150" },
	336	{ },
	337	};
	338	MODULE_DEVICE_TABLE(of, ptn5150_dt_match);
	339
	340	static const struct i2c_device_id ptn5150_i2c_id[] = {
	341	{ "ptn5150", 0 },
	342	{ }
	343	};
	344	MODULE_DEVICE_TABLE(i2c, ptn5150_i2c_id);
	345
	346	static struct i2c_driver ptn5150_i2c_driver = {
	347	.driver = {
	348	.name = "ptn5150",
	349	.of_match_table = ptn5150_dt_match,
	350	},
bcfa8e33	351	.probe = ptn5150_i2c_probe,
4ed754de VK	352	.id_table = ptn5150_i2c_id,
4ed754de VK	353	};
35f1f8f2	354	module_i2c_driver(ptn5150_i2c_driver);
4ed754de VK	355
	356	MODULE_DESCRIPTION("NXP PTN5150 CC logic Extcon driver");
	357	MODULE_AUTHOR("Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>");
85256f61	358	MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
4ed754de	359	MODULE_LICENSE("GPL v2");