Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) // extcon-ptn5150.c - PTN5150 CC logic extcon driver to support USB detection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) // Based on extcon-sm5502.c driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) // Copyright (c) 2018-2019 by Vijai Kumar K
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) // Author: Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) // Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/bitfield.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/extcon-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) /* PTN5150 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define PTN5150_REG_DEVICE_ID			0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define PTN5150_REG_CONTROL			0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define PTN5150_REG_INT_STATUS			0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define PTN5150_REG_CC_STATUS			0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define PTN5150_REG_CON_DET			0x09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define PTN5150_REG_VCONN_STATUS		0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define PTN5150_REG_RESET			0x0b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define PTN5150_REG_INT_MASK			0x18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define PTN5150_REG_INT_REG_STATUS		0x19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define PTN5150_REG_END				PTN5150_REG_INT_REG_STATUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define PTN5150_DFP_ATTACHED			0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define PTN5150_UFP_ATTACHED			0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) /* Define PTN5150 MASK/SHIFT constant */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define PTN5150_REG_DEVICE_ID_VERSION		GENMASK(7, 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define PTN5150_REG_DEVICE_ID_VENDOR		GENMASK(2, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define PTN5150_REG_CC_PORT_ATTACHMENT		GENMASK(4, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define PTN5150_REG_CC_VBUS_DETECTION		BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define PTN5150_REG_INT_CABLE_ATTACH_MASK	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define PTN5150_REG_INT_CABLE_DETACH_MASK	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) struct ptn5150_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct extcon_dev *edev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct i2c_client *i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct gpio_desc *int_gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct gpio_desc *vbus_gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	struct work_struct irq_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) /* List of detectable cables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static const unsigned int ptn5150_extcon_cable[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	EXTCON_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	EXTCON_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) static const struct regmap_config ptn5150_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	.reg_bits	= 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	.val_bits	= 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	.max_register	= PTN5150_REG_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) static void ptn5150_check_state(struct ptn5150_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	unsigned int port_status, reg_data, vbus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	ret = regmap_read(info->regmap, PTN5150_REG_CC_STATUS, &reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		dev_err(info->dev, "failed to read CC STATUS %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	port_status = FIELD_GET(PTN5150_REG_CC_PORT_ATTACHMENT, reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	switch (port_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	case PTN5150_DFP_ATTACHED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		gpiod_set_value_cansleep(info->vbus_gpiod, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		extcon_set_state_sync(info->edev, EXTCON_USB, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	case PTN5150_UFP_ATTACHED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		extcon_set_state_sync(info->edev, EXTCON_USB, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		vbus = FIELD_GET(PTN5150_REG_CC_VBUS_DETECTION, reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		if (vbus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			gpiod_set_value_cansleep(info->vbus_gpiod, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			gpiod_set_value_cansleep(info->vbus_gpiod, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static void ptn5150_irq_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	struct ptn5150_info *info = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			struct ptn5150_info, irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	unsigned int int_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	if (!info->edev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	mutex_lock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	/* Clear interrupt. Read would clear the register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &int_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		dev_err(info->dev, "failed to read INT STATUS %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (int_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		unsigned int cable_attach;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		cable_attach = int_status & PTN5150_REG_INT_CABLE_ATTACH_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		if (cable_attach) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 			ptn5150_check_state(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			extcon_set_state_sync(info->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 					EXTCON_USB_HOST, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 			extcon_set_state_sync(info->edev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 					EXTCON_USB, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			gpiod_set_value_cansleep(info->vbus_gpiod, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	/* Clear interrupt. Read would clear the register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 			&int_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		dev_err(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			"failed to read INT REG STATUS %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static irqreturn_t ptn5150_irq_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	struct ptn5150_info *info = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	schedule_work(&info->irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static int ptn5150_init_dev_type(struct ptn5150_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	unsigned int reg_data, vendor_id, version_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	ret = regmap_read(info->regmap, PTN5150_REG_DEVICE_ID, &reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		dev_err(info->dev, "failed to read DEVICE_ID %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	vendor_id = FIELD_GET(PTN5150_REG_DEVICE_ID_VENDOR, reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	version_id = FIELD_GET(PTN5150_REG_DEVICE_ID_VERSION, reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	dev_dbg(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		version_id, vendor_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	/* Clear any existing interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	ret = regmap_read(info->regmap, PTN5150_REG_INT_STATUS, &reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		dev_err(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			"failed to read PTN5150_REG_INT_STATUS %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 			ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	ret = regmap_read(info->regmap, PTN5150_REG_INT_REG_STATUS, &reg_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		dev_err(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			"failed to read PTN5150_REG_INT_REG_STATUS %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static int ptn5150_i2c_probe(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	struct device *dev = &i2c->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	struct device_node *np = i2c->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	struct ptn5150_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	if (!np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	i2c_set_clientdata(i2c, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	info->dev = &i2c->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	info->i2c = i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	info->vbus_gpiod = devm_gpiod_get(&i2c->dev, "vbus", GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (IS_ERR(info->vbus_gpiod)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		ret = PTR_ERR(info->vbus_gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		if (ret == -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			dev_info(dev, "No VBUS GPIO, ignoring VBUS control\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			info->vbus_gpiod = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			return dev_err_probe(dev, ret, "failed to get VBUS GPIO\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	mutex_init(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	INIT_WORK(&info->irq_work, ptn5150_irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	info->regmap = devm_regmap_init_i2c(i2c, &ptn5150_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (IS_ERR(info->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		return dev_err_probe(info->dev, PTR_ERR(info->regmap),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 				     "failed to allocate register map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	if (i2c->irq > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		info->irq = i2c->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		info->int_gpiod = devm_gpiod_get(&i2c->dev, "int", GPIOD_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		if (IS_ERR(info->int_gpiod)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			return dev_err_probe(dev, PTR_ERR(info->int_gpiod),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 					     "failed to get INT GPIO\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		info->irq = gpiod_to_irq(info->int_gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		if (info->irq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			dev_err(dev, "failed to get INTB IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			return info->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	ret = devm_request_threaded_irq(dev, info->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 					ptn5150_irq_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 					IRQF_TRIGGER_FALLING |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 					IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 					i2c->name, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		dev_err(dev, "failed to request handler for INTB IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	/* Allocate extcon device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	info->edev = devm_extcon_dev_allocate(info->dev, ptn5150_extcon_cable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (IS_ERR(info->edev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		dev_err(info->dev, "failed to allocate memory for extcon\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	/* Register extcon device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	ret = devm_extcon_dev_register(info->dev, info->edev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		dev_err(info->dev, "failed to register extcon device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	extcon_set_property_capability(info->edev, EXTCON_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 					EXTCON_PROP_USB_VBUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 					EXTCON_PROP_USB_VBUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 					EXTCON_PROP_USB_TYPEC_POLARITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	/* Initialize PTN5150 device and print vendor id and version id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	ret = ptn5150_init_dev_type(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	 * Update current extcon state if for example OTG connection was there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	 * before the probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	mutex_lock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	ptn5150_check_state(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static const struct of_device_id ptn5150_dt_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	{ .compatible = "nxp,ptn5150" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_DEVICE_TABLE(of, ptn5150_dt_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static const struct i2c_device_id ptn5150_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	{ "ptn5150", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) MODULE_DEVICE_TABLE(i2c, ptn5150_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static struct i2c_driver ptn5150_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		.name	= "ptn5150",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		.of_match_table = ptn5150_dt_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	.probe_new	= ptn5150_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	.id_table = ptn5150_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) module_i2c_driver(ptn5150_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) MODULE_DESCRIPTION("NXP PTN5150 CC logic Extcon driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) MODULE_AUTHOR("Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) MODULE_LICENSE("GPL v2");