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unplugged-vendor/kernel-4.19/drivers/misc/mediatek/extcon/extcon-mtk-usb.c

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Initial commit: AOSP 12 vendor with modifications for Unplugged OS
2025-10-06 13:59:42 +00:00
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 MediaTek Inc.
*/
#include <linux/extcon-provider.h>
#include <linux/gpio/consumer.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/usb/role.h>
#include <linux/workqueue.h>
#include "extcon-mtk-usb.h"
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
#include <charger_class.h>
#endif
#ifdef CONFIG_TCPC_CLASS
#include "tcpm.h"
#endif
#ifdef CONFIG_MTK_USB_TYPEC_U3_MUX
#include "mux_switch.h"
#endif
#include <linux/cust_include/cust_project_all_config.h>
#ifdef __CUST_TCPC_POLARITY_DETECT__
enum up_tcpc_polarity{
UP_TCPC_POLARITY_P,
UP_TCPC_POLARITY_N,
UP_TCPC_PLUGOUT
};
int up_tcpc_polarity_val = UP_TCPC_PLUGOUT;
void update_tcpc_polarity(int polarity)
{
up_tcpc_polarity_val = polarity;
}
#endif
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
#include <linux/of_gpio.h>
#include <linux/delay.h>
#define OTG_SELECT_GPIO_NAME "otg_gpio_select"
static int up_otg_select_gpio_num;
void up_otg_gpio_set(bool en);
int get_otg_select_gpio(void);
static int up_parse_otg_dts(struct device_node *node, const char *gpio_name);
#endif
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
#include <linux/delay.h>
#include <linux/of_gpio.h>
#define WIRELESS_CHARGE_GPIO_NAME "wireless_charge_gpio"
static int up_wireless_charge_gpio_num;
int get_wireless_gpio(void);
int up_parse_wireless_dts(struct device_node *node, const char *gpio_name);
#ifdef CONFIG_WIRELESS_POWER_MT5728
extern ssize_t mt5728_force_chipen_disable(void);
extern ssize_t mt5728_chipen_ctrl_by_hardware(void);
extern int is_reverse_charger_online(void);
#endif
#endif
#endif
#ifdef __CUST_UVC_VBUS_GPIO__
static int up_uvc_vbus_gpio_num;
static int up_uvc_switch_gpio_num;
static int up_parse_dts(struct device_node *node, const char *gpio_name)
{
int gpio_num = 0;
struct gpio_desc *desc;
int ret = 0;
if (node)
{
gpio_num = of_get_named_gpio(node, gpio_name, 0);
if (gpio_num < 0)
{
pr_info("%s: of_get_named_gpio fail. \n", __func__);
return -1;
}
else
{
pr_info("%s: of_get_named_gpio GPIO is %d.\n", __func__, gpio_num);
desc = gpio_to_desc(gpio_num);
if (!desc)
{
pr_info("%s: gpio_desc is null.\n", __func__);
return -1;
}
else
pr_info("%s: gpio_desc is not null.\n", __func__);
if (gpio_is_valid(gpio_num))
pr_info("%s: gpio number %d is valid. \n", __func__ ,gpio_num);
ret = gpio_request(gpio_num, gpio_name);
if (ret)
{
pr_info("%s: gpio_request fail. \n", __func__);
return -1;
}
else
{
ret = gpio_direction_output(gpio_num, 1);
if (ret)
{
pr_info("%s: gpio_direction_output failed. \n", __func__);
return -1;
}
gpio_set_value(gpio_num, 0);
pr_info("%s: gpio_get_value =%d. \n", __func__, gpio_get_value(gpio_num));
return gpio_num;
}
}
}
else
{
pr_info("%s: get gpio num fail. \n", __func__);
return -1;
}
}
#endif
static struct mtk_extcon_info *g_extcon;
static const unsigned int usb_extcon_cable[] = {
EXTCON_USB,
EXTCON_USB_HOST,
EXTCON_NONE,
};
static void mtk_usb_extcon_update_role(struct work_struct *work)
{
struct usb_role_info *role = container_of(to_delayed_work(work),
struct usb_role_info, dwork);
struct mtk_extcon_info *extcon = role->extcon;
unsigned int cur_dr, new_dr;
cur_dr = extcon->c_role;
new_dr = role->d_role;
dev_info(extcon->dev, "cur_dr(%d) new_dr(%d)\n", cur_dr, new_dr);
/* none -> device */
if (cur_dr == DUAL_PROP_DR_NONE &&
new_dr == DUAL_PROP_DR_DEVICE) {
extcon_set_state_sync(extcon->edev, EXTCON_USB, true);
/* none -> host */
} else if (cur_dr == DUAL_PROP_DR_NONE &&
new_dr == DUAL_PROP_DR_HOST) {
extcon_set_state_sync(extcon->edev, EXTCON_USB_HOST, true);
/* device -> none */
} else if (cur_dr == DUAL_PROP_DR_DEVICE &&
new_dr == DUAL_PROP_DR_NONE) {
extcon_set_state_sync(extcon->edev, EXTCON_USB, false);
/* host -> none */
} else if (cur_dr == DUAL_PROP_DR_HOST &&
new_dr == DUAL_PROP_DR_NONE) {
extcon_set_state_sync(extcon->edev, EXTCON_USB_HOST, false);
/* device -> host */
} else if (cur_dr == DUAL_PROP_DR_DEVICE &&
new_dr == DUAL_PROP_DR_HOST) {
extcon_set_state_sync(extcon->edev, EXTCON_USB, false);
extcon_set_state_sync(extcon->edev, EXTCON_USB_HOST, true);
/* host -> device */
} else if (cur_dr == DUAL_PROP_DR_HOST &&
new_dr == DUAL_PROP_DR_DEVICE) {
extcon_set_state_sync(extcon->edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(extcon->edev, EXTCON_USB, true);
}
/* usb role switch */
if (extcon->role_sw) {
if (new_dr == DUAL_PROP_DR_DEVICE)
usb_role_switch_set_role(extcon->role_sw,
USB_ROLE_DEVICE);
else if (new_dr == DUAL_PROP_DR_HOST)
usb_role_switch_set_role(extcon->role_sw,
USB_ROLE_HOST);
else
usb_role_switch_set_role(extcon->role_sw,
USB_ROLE_NONE);
}
extcon->c_role = new_dr;
kfree(role);
}
static int mtk_usb_extcon_set_role(struct mtk_extcon_info *extcon,
unsigned int role)
{
struct usb_role_info *role_info;
/* create and prepare worker */
role_info = kzalloc(sizeof(*role_info), GFP_KERNEL);
if (!role_info)
return -ENOMEM;
INIT_DELAYED_WORK(&role_info->dwork, mtk_usb_extcon_update_role);
role_info->extcon = extcon;
role_info->d_role = role;
/* issue connection work */
queue_delayed_work(extcon->extcon_wq, &role_info->dwork, 0);
return 0;
}
#if !defined(CONFIG_USB_MTK_HDRC)
void mt_usb_connect()
{
/* if (g_extcon)
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE); */
}
EXPORT_SYMBOL(mt_usb_connect);
void mt_usb_disconnect()
{
/* if (g_extcon)
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE); */
}
EXPORT_SYMBOL(mt_usb_disconnect);
#endif
static int mtk_usb_extcon_psy_notifier(struct notifier_block *nb,
unsigned long event, void *data)
{
struct power_supply *psy = data;
struct mtk_extcon_info *extcon = container_of(nb,
struct mtk_extcon_info, psy_nb);
union power_supply_propval pval;
union power_supply_propval ival;
union power_supply_propval tval;
int ret;
if (event != PSY_EVENT_PROP_CHANGED || psy != extcon->usb_psy)
return NOTIFY_DONE;
ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_ONLINE, &pval);
if (ret < 0) {
dev_info(extcon->dev, "failed to get online prop\n");
return NOTIFY_DONE;
}
ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_AUTHENTIC, &ival);
if (ret < 0) {
dev_info(extcon->dev, "failed to get authentic prop\n");
ival.intval = 0;
}
ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_TYPE, &tval);
if (ret < 0) {
dev_info(extcon->dev, "failed to get usb type\n");
return NOTIFY_DONE;
}
dev_info(extcon->dev, "online=%d, ignore_usb=%d, type=%d\n",
pval.intval, ival.intval, tval.intval);
if (ival.intval)
return NOTIFY_DONE;
#ifdef CONFIG_TCPC_CLASS
if (extcon->c_role == DUAL_PROP_DR_NONE && pval.intval &&
(tval.intval == POWER_SUPPLY_TYPE_USB ||
tval.intval == POWER_SUPPLY_TYPE_USB_CDP))
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
#else
if (pval.intval && (tval.intval == POWER_SUPPLY_TYPE_USB ||
tval.intval == POWER_SUPPLY_TYPE_USB_CDP))
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
else
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
#endif
return NOTIFY_DONE;
}
static int mtk_usb_extcon_psy_init(struct mtk_extcon_info *extcon)
{
int ret = 0;
struct device *dev = extcon->dev;
union power_supply_propval pval;
union power_supply_propval ival;
union power_supply_propval tval;
extcon->usb_psy = devm_power_supply_get_by_phandle(dev, "charger");
if (IS_ERR_OR_NULL(extcon->usb_psy)) {
dev_err(dev, "fail to get usb_psy\n");
extcon->usb_psy = NULL;
return -EINVAL;
}
extcon->psy_nb.notifier_call = mtk_usb_extcon_psy_notifier;
ret = power_supply_reg_notifier(&extcon->psy_nb);
if (ret) {
dev_err(dev, "fail to register notifer\n");
return ret;
}
ret = power_supply_get_property(extcon->usb_psy,
POWER_SUPPLY_PROP_ONLINE, &pval);
if (ret < 0) {
dev_info(extcon->dev, "failed to get online prop\n");
return 0;
}
ret = power_supply_get_property(extcon->usb_psy,
POWER_SUPPLY_PROP_AUTHENTIC, &ival);
if (ret < 0) {
dev_info(extcon->dev, "failed to get authentic prop\n");
ival.intval = 0;
}
ret = power_supply_get_property(extcon->usb_psy,
POWER_SUPPLY_PROP_USB_TYPE, &tval);
if (ret < 0) {
dev_info(extcon->dev, "failed to get usb type\n");
return 0;
}
dev_info(extcon->dev, "online=%d, ignore_usb=%d, type=%d\n",
pval.intval, ival.intval, tval.intval);
if (ival.intval)
return 0;
if (pval.intval && (tval.intval == POWER_SUPPLY_USB_TYPE_SDP ||
tval.intval == POWER_SUPPLY_USB_TYPE_CDP))
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
return 0;
}
extern void mobile_source_handler(bool open);
#if defined ADAPT_CHARGER_V1
#include <mt-plat/v1/charger_class.h>
static struct charger_device *primary_charger;
static int mtk_usb_extcon_set_vbus_v1(bool is_on) {
if (!primary_charger) {
primary_charger = get_charger_by_name("primary_chg");
if (!primary_charger) {
pr_info("%s: get primary charger device failed\n", __func__);
return -ENODEV;
}
}
#if defined(CONFIG_MTK_GAUGE_VERSION) && (CONFIG_MTK_GAUGE_VERSION == 30)
pr_info("%s: is_on=%d\n", __func__, is_on);
if (is_on) {
#ifdef CONFIG_WIRELESS_POWER_MT5728
if(is_reverse_charger_online()){
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
gpio_direction_output(up_otg_select_gpio_num,0);
gpio_set_value(up_otg_select_gpio_num, 0);
#endif
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
pr_info("pull up the wireless gpio before enable OTG.\n");
gpio_direction_output(up_wireless_charge_gpio_num, 0);
gpio_set_value(up_wireless_charge_gpio_num, 0);//state:insert otg;chipen-pin(gpio26) output high
#endif
#endif
printk("UP_OTG_up_is_reverse_charger_online:%d\n",is_reverse_charger_online());
}
else
#endif
{
#ifdef CONFIG_WIRELESS_POWER_MT5728
mt5728_force_chipen_disable();//state:insert otg;chipen-pin(gpio26) output high
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
pr_info("pull up the wireless gpio before enable OTG.\n");
gpio_direction_output(up_wireless_charge_gpio_num, 0);
gpio_set_value(up_wireless_charge_gpio_num, 1);//state:insert otg;chipen-pin(gpio26) output high
#endif
#endif
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
up_otg_gpio_set(true);//state:insert otg;otg-en-pin(gpio25) output high
printk("UP_OTG_up_otg_gpio_set_true\n");
#endif
#endif
}
charger_dev_enable_otg(primary_charger, true);
#ifdef __CUST_OTG_CURRENT__
charger_dev_set_boost_current_limit(primary_charger,
__CUST_OTG_CURRENT__);
#else
charger_dev_set_boost_current_limit(primary_charger,
1500000);
#endif
#if 0
{// # workaround
charger_dev_kick_wdt(primary_charger);
enable_boost_polling(true);
}
#endif
#if defined(CONFIG_MACH_MT6853) || defined(CONFIG_MACH_MT6833) || defined(CONFIG_MACH_MT6877)
mobile_source_handler(1);
#endif
} else {
charger_dev_enable_otg(primary_charger, false);
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
up_otg_gpio_set(false); //state:Pull out the otg;otg-en-pin(gpio25) input
printk("UP_OTG_up_otg_gpio_set_false\n");
#endif
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
pr_info("pull down the wireless gpio after disable OTG.\n");
gpio_direction_input(up_wireless_charge_gpio_num); //state:Pull out the otg;chipen-pin(gpio26) output high
#endif
#endif
#ifdef CONFIG_WIRELESS_POWER_MT5728
pr_info("pull down the wireless gpio after disable OTG.\n");
mt5728_chipen_ctrl_by_hardware(); //state:Pull out the otg;chipen-pin(gpio26) output high
msleep(5);
#endif
#if 0
//# workaround
enable_boost_polling(false);
#endif
#if defined(CONFIG_MACH_MT6853) || defined(CONFIG_MACH_MT6833) || defined(CONFIG_MACH_MT6877)
mobile_source_handler(0);
#endif
}
#else
if (is_on) {
charger_dev_enable_otg(primary_charger, true);
charger_dev_set_boost_current_limit(primary_charger,
1500000);
} else {
charger_dev_enable_otg(primary_charger, false);
}
#endif
return 0;
}
#endif //ADAPT_CHARGER_V1
/*OTG BEGIN*/
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
static int up_parse_otg_dts(struct device_node *node, const char *gpio_name)
{
int gpio_num = 0;
struct gpio_desc *desc;
int ret = 0;
printk("%s: UP_OTG_up_parse_otg_dts \n", __func__);
if (node)
{
gpio_num = of_get_named_gpio(node, gpio_name, 0);
if (gpio_num < 0)
{
printk("%s: UP_OTG_of_get_named_gpio fail. \n", __func__);
return -1;
}
else
{
printk("%s: UP_OTG_of_get_named_gpio GPIO is %d.\n", __func__, gpio_num);
desc = gpio_to_desc(gpio_num);
if (!desc)
{
printk("%s: UP_OTG_gpio_desc is null.\n", __func__);
return -1;
}
else
printk("%s: UP_OTG_gpio_desc is not null.\n", __func__);
if (gpio_is_valid(gpio_num))
printk("%s: UP_OTG_gpio number %d is valid. \n", __func__ ,gpio_num);
ret = gpio_request(gpio_num, gpio_name);
if (ret)
{
printk("%s: UP_OTG_gpio_request fail. \n", __func__);
return -1;
}
else
{
ret = gpio_direction_output(gpio_num, 1);
if (ret)
{
printk("%s: UP_OTG_gpio_direction_output failed. \n", __func__);
return -1;
}
gpio_set_value(gpio_num, 0);
printk("%s: UP_OTG_gpio_get_value =%d. \n", __func__, gpio_get_value(gpio_num));
return gpio_num;
}
}
}
else
{
printk("%s: UP_OTG_get gpio num fail. \n", __func__);
return -1;
}
}
int get_otg_select_gpio(void)
{
struct device_node *node;
printk("%s: UP_OTG_enter. \n", __func__);
node = of_find_compatible_node(NULL, NULL, "mediatek,extcon-usb");
if (node)
{
up_otg_select_gpio_num = up_parse_otg_dts(node, OTG_SELECT_GPIO_NAME);
if (0 > up_otg_select_gpio_num)
{
printk("%s: UP_OTG_up_parse_dts 1 fail. \n", __func__);
return -1;
}
}
else
{
printk("%s: UP_OTG_cannot get the node: 'mediatek,usb3'.\n", __func__);
return -ENODEV;
}
printk("%s: UP_OTG_end. \n", __func__);
return 0;
}
void up_otg_gpio_set(bool en)
{
if(en) {
gpio_direction_output(up_otg_select_gpio_num,0);
gpio_set_value(up_otg_select_gpio_num, 1);
mdelay(5);
printk("UP_OTG_pull up the otg select gpio after enable OTG gpio value = %d .\n",gpio_get_value(up_otg_select_gpio_num));
} else {
//gpio_set_value(up_otg_select_gpio_num, 0);
gpio_direction_input(up_otg_select_gpio_num);
mdelay(5);
printk("UP_OTG_pull down the otg select gpio after disable OTG gpio value = %d .\n",gpio_get_value(up_otg_select_gpio_num));
}
}
#endif
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
int up_parse_wireless_dts(struct device_node *node, const char *gpio_name)
{
int gpio_num = 0;
struct gpio_desc *desc;
int ret = 0;
if (node)
{
gpio_num = of_get_named_gpio(node, gpio_name, 0);
if (gpio_num < 0)
{
pr_info("%s: of_get_named_gpio fail. \n", __func__);
return -1;
}
else
{
pr_info("%s: of_get_named_gpio GPIO is %d.\n", __func__, gpio_num);
desc = gpio_to_desc(gpio_num);
if (!desc)
{
pr_info("%s: gpio_desc is null.\n", __func__);
return -1;
}
else
pr_info("%s: gpio_desc is not null.\n", __func__);
if (gpio_is_valid(gpio_num))
pr_info("%s: gpio number %d is valid. \n", __func__ ,gpio_num);
ret = gpio_request(gpio_num, gpio_name);
if (ret)
{
pr_info("%s: gpio_request fail. \n", __func__);
return -1;
}
else
{
ret = gpio_direction_output(gpio_num, 1);
if (ret)
{
pr_info("%s: gpio_direction_output failed. \n", __func__);
return -1;
}
gpio_set_value(gpio_num, 0);
pr_info("%s: gpio_get_value =%d. \n", __func__, gpio_get_value(gpio_num));
return gpio_num;
}
}
}
else
{
pr_info("%s: get gpio num fail. \n", __func__);
return -1;
}
}
int get_wireless_gpio(void)
{
struct device_node *node;
pr_info("%s: enter. \n", __func__);
node = of_find_compatible_node(NULL, NULL, "mediatek,usb_boost");
if (node)
{
up_wireless_charge_gpio_num = up_parse_wireless_dts(node, WIRELESS_CHARGE_GPIO_NAME);
if (0 > up_wireless_charge_gpio_num)
{
pr_info("%s: up_parse_dts fail. \n", __func__);
return -1;
}
}
else
{
pr_info("%s: cannot get the node: 'mediatek,usb_boost'.\n", __func__);
return -ENODEV;
}
pr_info("%s: end. \n", __func__);
return 0;
}
void up_wireless_gpio_set(bool en)
{
if(en) {
gpio_direction_output(up_wireless_charge_gpio_num,0);
gpio_set_value(up_wireless_charge_gpio_num, 1);
mdelay(5);
printk("UP_OTG_pull up the wireless charge gpio after enable OTG gpio value = %d .\n",gpio_get_value(up_wireless_charge_gpio_num));
} else {
gpio_direction_input(up_wireless_charge_gpio_num);
mdelay(5);
printk("UP_OTG_pull down the wireless charge gpio after disable OTG gpio value = %d .\n",gpio_get_value(up_wireless_charge_gpio_num));
}
}
#endif
#endif
static int mtk_usb_extcon_set_vbus(struct mtk_extcon_info *extcon,
bool is_on)
{
#if !defined(CONFIG_CHARGER_PSC5415A) || !defined(CONFIG_CHARGER_BCT24157)
int ret;
#endif
#if defined ADAPT_CHARGER_V1
ret = mtk_usb_extcon_set_vbus_v1(is_on);
#else
struct device *dev = extcon->dev;
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
struct charger_device *chg_dev;
dev_err(dev, "vbus turn %s\n", is_on ? "on" : "off");
chg_dev = get_charger_by_name("primary_chg");
if (!chg_dev)
return 0;
#else
struct regulator *vbus = extcon->vbus;
#endif
/* vbus is optional */
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
if (extcon->vbus_on == is_on)
#else
if (!vbus || extcon->vbus_on == is_on)
#endif
return 0;
dev_info(dev, "vbus turn %s\n", is_on ? "on" : "off");
if (is_on) {
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
charger_dev_enable_otg(chg_dev, is_on);
#else
if (extcon->vbus_vol) {
ret = regulator_set_voltage(vbus,
extcon->vbus_vol, extcon->vbus_vol);
if (ret) {
dev_err(dev, "vbus regulator set voltage failed\n");
return ret;
}
}
if (extcon->vbus_cur) {
ret = regulator_set_current_limit(vbus,
extcon->vbus_cur, extcon->vbus_cur);
if (ret) {
dev_err(dev, "vbus regulator set current failed\n");
return ret;
}
}
ret = regulator_enable(vbus);
if (ret) {
dev_err(dev, "vbus regulator enable failed\n");
return ret;
}
mobile_source_handler(1);
#endif
} else {
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
charger_dev_enable_otg(chg_dev, is_on);
#else
regulator_disable(vbus);
#endif
mobile_source_handler(0);
}
extcon->vbus_on = is_on;
#endif //ADAPT_CHARGER_V1
return 0;
}
#ifdef CONFIG_TCPC_CLASS
static int mtk_extcon_tcpc_notifier(struct notifier_block *nb,
unsigned long event, void *data)
{
struct tcp_notify *noti = data;
struct mtk_extcon_info *extcon =
container_of(nb, struct mtk_extcon_info, tcpc_nb);
struct device *dev = extcon->dev;
bool vbus_on;
switch (event) {
case TCP_NOTIFY_SOURCE_VBUS:
dev_info(dev, "source vbus = %dmv\n",
noti->vbus_state.mv);
vbus_on = (noti->vbus_state.mv) ? true : false;
mtk_usb_extcon_set_vbus(extcon, vbus_on);
break;
case TCP_NOTIFY_TYPEC_STATE:
dev_info(dev, "old_state=%d, new_state=%d\n",
noti->typec_state.old_state,
noti->typec_state.new_state);
#ifdef CONFIG_MTK_USB_TYPEC_U3_MUX
if ((noti->typec_state.new_state == TYPEC_ATTACHED_SNK ||
noti->typec_state.new_state == TYPEC_ATTACHED_NORP_SRC ||
noti->typec_state.new_state == TYPEC_ATTACHED_CUSTOM_SRC)) {
if (noti->typec_state.polarity == 0)
usb3_switch_set(TYPEC_ORIENTATION_REVERSE);
else
usb3_switch_set(TYPEC_ORIENTATION_NORMAL);
} else if (noti->typec_state.new_state == TYPEC_ATTACHED_SRC) {
if (g_extcon->support_u3) {
if (noti->typec_state.polarity == 0)
usb3_switch_set(TYPEC_ORIENTATION_REVERSE);
else
usb3_switch_set(TYPEC_ORIENTATION_NORMAL);
} else {
if (noti->typec_state.polarity == 0)
usb3_switch_set(TYPEC_ORIENTATION_NORMAL);
else
usb3_switch_set(TYPEC_ORIENTATION_REVERSE);
}
} else if (noti->typec_state.new_state == TYPEC_UNATTACHED) {
usb3_switch_set(TYPEC_ORIENTATION_NONE);
}
#endif
if (noti->typec_state.old_state == TYPEC_UNATTACHED &&
noti->typec_state.new_state == TYPEC_ATTACHED_SRC) {
dev_info(dev, "Type-C SRC plug in\n");
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_HOST);
} else if (!(extcon->bypss_typec_sink) &&
noti->typec_state.old_state == TYPEC_UNATTACHED &&
(noti->typec_state.new_state == TYPEC_ATTACHED_SNK ||
noti->typec_state.new_state == TYPEC_ATTACHED_NORP_SRC ||
noti->typec_state.new_state == TYPEC_ATTACHED_CUSTOM_SRC)) {
dev_info(dev, "Type-C SINK plug in\n");
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
} else if ((noti->typec_state.old_state == TYPEC_ATTACHED_SRC ||
noti->typec_state.old_state == TYPEC_ATTACHED_SNK ||
noti->typec_state.old_state == TYPEC_ATTACHED_NORP_SRC ||
noti->typec_state.old_state == TYPEC_ATTACHED_CUSTOM_SRC) &&
noti->typec_state.new_state == TYPEC_UNATTACHED) {
dev_info(dev, "Type-C plug out\n");
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
#ifdef __CUST_TCPC_POLARITY_DETECT__
update_tcpc_polarity(UP_TCPC_PLUGOUT);
#endif
}
#ifdef __CUST_TCPC_POLARITY_DETECT__
if(noti->typec_state.new_state == TYPEC_ATTACHED_SRC|| noti->typec_state.new_state == TYPEC_ATTACHED_SNK){
update_tcpc_polarity(noti->typec_state.polarity);
}
#endif
break;
case TCP_NOTIFY_DR_SWAP:
dev_info(dev, "%s dr_swap, new role=%d\n",
__func__, noti->swap_state.new_role);
if (noti->swap_state.new_role == PD_ROLE_UFP &&
extcon->c_role != DUAL_PROP_DR_DEVICE) {
dev_info(dev, "switch role to device\n");
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
} else if (noti->swap_state.new_role == PD_ROLE_DFP &&
extcon->c_role != DUAL_PROP_DR_HOST) {
dev_info(dev, "switch role to host\n");
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_HOST);
}
break;
}
return NOTIFY_OK;
}
static int mtk_usb_extcon_tcpc_init(struct mtk_extcon_info *extcon)
{
struct tcpc_device *tcpc_dev;
int ret;
tcpc_dev = tcpc_dev_get_by_name("type_c_port0");
if (!tcpc_dev) {
dev_err(extcon->dev, "get tcpc device fail\n");
return -ENODEV;
}
extcon->tcpc_nb.notifier_call = mtk_extcon_tcpc_notifier;
ret = register_tcp_dev_notifier(tcpc_dev, &extcon->tcpc_nb,
TCP_NOTIFY_TYPE_USB | TCP_NOTIFY_TYPE_VBUS |
TCP_NOTIFY_TYPE_MISC);
if (ret < 0) {
dev_err(extcon->dev, "register notifer fail\n");
return -EINVAL;
}
extcon->tcpc_dev = tcpc_dev;
return 0;
}
#endif
static void mtk_usb_extcon_detect_cable(struct work_struct *work)
{
struct mtk_extcon_info *extcon = container_of(to_delayed_work(work),
struct mtk_extcon_info,
wq_detcable);
int id;
/* check ID and update cable state */
id = extcon->id_gpiod ?
gpiod_get_value_cansleep(extcon->id_gpiod) : 1;
/* at first we clean states which are no longer active */
if (id) {
#ifdef __CUST_UVC_VBUS_GPIO__
gpio_set_value(up_uvc_vbus_gpio_num, 0);
gpio_set_value(up_uvc_switch_gpio_num,0);
#else
mtk_usb_extcon_set_vbus(extcon, false);
#endif
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
} else {
#ifdef __CUST_UVC_VBUS_GPIO__
gpio_set_value(up_uvc_switch_gpio_num,1);
gpio_set_value(up_uvc_vbus_gpio_num, 1);
#else
mtk_usb_extcon_set_vbus(extcon, true);
#endif
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_HOST);
}
}
static irqreturn_t mtk_usb_idpin_handle(int irq, void *dev_id)
{
struct mtk_extcon_info *extcon = dev_id;
/* issue detection work */
queue_delayed_work(system_power_efficient_wq, &extcon->wq_detcable, 0);
return IRQ_HANDLED;
}
static int mtk_usb_extcon_id_pin_init(struct mtk_extcon_info *extcon)
{
int ret = 0;
int id;
extcon->id_gpiod = devm_gpiod_get(extcon->dev, "id", GPIOD_IN);
if (!extcon->id_gpiod || IS_ERR(extcon->id_gpiod)) {
dev_err(extcon->dev, "failed to get id gpio\n");
extcon->id_gpiod = NULL;
return -EINVAL;
}
extcon->id_irq = gpiod_to_irq(extcon->id_gpiod);
if (extcon->id_irq < 0) {
dev_err(extcon->dev, "failed to get ID IRQ\n");
extcon->id_gpiod = NULL;
return -EINVAL;
}
INIT_DELAYED_WORK(&extcon->wq_detcable, mtk_usb_extcon_detect_cable);
ret = devm_request_threaded_irq(extcon->dev, extcon->id_irq, NULL,
mtk_usb_idpin_handle, IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
dev_name(extcon->dev), extcon);
if (ret < 0) {
dev_err(extcon->dev, "failed to request handler for ID IRQ\n");
extcon->id_gpiod = NULL;
return ret;
}
enable_irq_wake(extcon->id_irq);
// get id pin value when boot on
id = extcon->id_gpiod ? gpiod_get_value_cansleep(extcon->id_gpiod) : 1;
dev_info(extcon->dev, "id value : %d\n", id);
if (!id) {
mtk_usb_extcon_set_vbus(extcon, true);
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_HOST);
}
return 0;
}
#if defined ADAPT_PSY_V1
static void issue_connection_work(unsigned int dr)
{
if (!g_extcon) {
pr_info("g_extcon = NULL\n");
return;
}
/* issue connection work */
mtk_usb_extcon_set_role(g_extcon, dr);
}
void mt_usb_connect_v1(void)
{
pr_info("%s in mtk extcon\n", __func__);
#if (defined CONFIG_TCPC_CLASS) || (defined CONFIG_CHRDET_VBUS_DETECTION)
/* check current role to avoid power role swap issue */
if (g_extcon && g_extcon->c_role == DUAL_PROP_DR_NONE)
issue_connection_work(DUAL_PROP_DR_DEVICE);
#else
issue_connection_work(DUAL_PROP_DR_DEVICE);
#endif
}
EXPORT_SYMBOL_GPL(mt_usb_connect_v1);
void mt_usb_disconnect_v1(void)
{
pr_info("%s in mtk extcon\n", __func__);
#ifdef CONFIG_TCPC_CLASS
/* disconnect by tcpc notifier */
#else
issue_connection_work(DUAL_PROP_DR_NONE);
#endif
}
EXPORT_SYMBOL_GPL(mt_usb_disconnect_v1);
#endif //ADAPT_PSY_V1
#ifdef CONFIG_WIRELESS_POWER_MT5728
#include<linux/workqueue.h>
struct mtk_extcon_info *wlextcon;
static struct workqueue_struct *wl_wq;
static struct delayed_work dwork;
static int wl_ops;
static void do_vbus_work(struct work_struct *work)
{
bool vbus_on = !!wl_ops;
mtk_usb_extcon_set_vbus(wlextcon, vbus_on);
}
static void issue_vbus_work(int ops, int delay)
{
INIT_DELAYED_WORK(&dwork, do_vbus_work);
wl_ops = ops;
/* issue vbus work */
pr_info("issue work, ops<%d>, delay<%d>\n", ops, delay);
queue_delayed_work(wl_wq,
&dwork, msecs_to_jiffies(delay));
}
void mt_usb_vbus_on(int delay)
{
pr_info("vbus_on\n");
issue_vbus_work(true, delay);
}
void mt_usb_vbus_off(int delay)
{
pr_info("vbus_off\n");
issue_vbus_work(false, delay);
}
#endif
#ifdef CONFIG_CHRDET_VBUS_DETECTION
extern bool mtk_mt_pmic_get_vcdt(void);
#endif
#ifdef __CUST_TCPC_POLARITY_DETECT__
static ssize_t up_tcpc_polarity_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d \n", up_tcpc_polarity_val);
}
DEVICE_ATTR(up_tcpc_polarity, 0664, up_tcpc_polarity_show, NULL);
#endif
static int mtk_usb_extcon_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mtk_extcon_info *extcon;
struct platform_device *conn_pdev;
struct device_node *conn_np;
int ret;
#ifdef CONFIG_CHRDET_VBUS_DETECTION
bool is_vcdt_on;
#endif
#ifdef __CUST_WIRELESS_CHARGE_SUPPORT__
#if __CUST_WIRELESS_CHARGE_SUPPORT__
if(0 > get_wireless_gpio())
pr_info("get_wireless_gpio failed.\n");
#endif
#endif
#ifdef CONFIG_WIRELESS_POWER_MT5728
gpio_direction_input(up_wireless_charge_gpio_num); //mt5728 wireless charge pin need default output status
#endif
extcon = devm_kzalloc(&pdev->dev, sizeof(*extcon), GFP_KERNEL);
if (!extcon)
return -ENOMEM;
#ifdef CONFIG_WIRELESS_POWER_MT5728
wlextcon = extcon;
#endif
extcon->dev = dev;
/* extcon */
extcon->edev = devm_extcon_dev_allocate(dev, usb_extcon_cable);
if (IS_ERR(extcon->edev)) {
dev_err(dev, "failed to allocate extcon device\n");
return -ENOMEM;
}
ret = devm_extcon_dev_register(dev, extcon->edev);
if (ret < 0) {
dev_info(dev, "failed to register extcon device\n");
return ret;
}
/* usb role switch */
conn_np = of_parse_phandle(dev->of_node, "dev-conn", 0);
if (!conn_np) {
dev_info(dev, "failed to get dev-conn node\n");
return -EINVAL;
}
conn_pdev = of_find_device_by_node(conn_np);
if (!conn_pdev) {
dev_info(dev, "failed to get dev-conn pdev\n");
return -EINVAL;
}
extcon->dev_conn.endpoint[0] = kasprintf(GFP_KERNEL,
"%s-role-switch", dev_name(&conn_pdev->dev));
extcon->dev_conn.endpoint[1] = dev_name(extcon->dev);
extcon->dev_conn.id = "usb-role-switch";
device_connection_add(&extcon->dev_conn);
extcon->role_sw = usb_role_switch_get(extcon->dev);
if (IS_ERR(extcon->role_sw)) {
dev_err(dev, "failed to get usb role\n");
return PTR_ERR(extcon->role_sw);
}
/* vbus */
#if defined(CONFIG_CHARGER_PSC5415A) || defined(CONFIG_CHARGER_BCT24157)
#else
extcon->vbus = devm_regulator_get(dev, "vbus");
if (IS_ERR(extcon->vbus)) {
dev_err(dev, "failed to get vbus\n");
return PTR_ERR(extcon->vbus);
}
#ifndef CONFIG_CHRDET_VBUS_DETECTION
if (!of_property_read_u32(dev->of_node, "vbus-voltage",
&extcon->vbus_vol))
dev_info(dev, "vbus-voltage=%d", extcon->vbus_vol);
if (!of_property_read_u32(dev->of_node, "vbus-current",
&extcon->vbus_cur))
dev_info(dev, "vbus-current=%d", extcon->vbus_cur);
#endif
#endif
extcon->bypss_typec_sink =
of_property_read_bool(dev->of_node,
"mediatek,bypss-typec-sink");
extcon->extcon_wq = create_singlethread_workqueue("extcon_usb");
if (!extcon->extcon_wq)
return -ENOMEM;
#ifdef CONFIG_WIRELESS_POWER_MT5728
wl_wq = create_singlethread_workqueue("wl_workq");
#endif
extcon->support_u3 = !of_property_read_bool(dev->of_node, "not_support_u3");
if (!extcon->support_u3)
dev_info(dev, "platform does not support U3\n");
extcon->c_role = DUAL_PROP_DR_DEVICE;
/* default initial role */
#ifdef CONFIG_CHRDET_VBUS_DETECTION
is_vcdt_on = mtk_mt_pmic_get_vcdt();
dev_info(dev, "extcon vcdt %d\n", is_vcdt_on);
if (is_vcdt_on)
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_DEVICE);
else
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
#else
mtk_usb_extcon_set_role(extcon, DUAL_PROP_DR_NONE);
#endif
/* default turn off vbus */
mtk_usb_extcon_set_vbus(extcon, false);
/*get id resources*/
ret = mtk_usb_extcon_id_pin_init(extcon);
if (ret < 0)
dev_info(dev, "failed to init id pin\n");
#ifdef __CUST_UVC_VBUS_GPIO__
up_uvc_vbus_gpio_num = up_parse_dts(dev->of_node, "uvc_vbus_gpio");
if (0 > up_uvc_vbus_gpio_num)
{
dev_info(dev,"%s: up_parse_dts fail. \n", __func__);
}
up_uvc_switch_gpio_num = up_parse_dts(dev->of_node, "uvc_switch_gpio");
if (0 > up_uvc_switch_gpio_num)
{
dev_info(dev,"%s: up_parse_dts fail. \n", __func__);
}
#endif
/* power psy */
ret = mtk_usb_extcon_psy_init(extcon);
if (ret < 0)
dev_err(dev, "failed to init psy\n");
#ifdef CONFIG_TCPC_CLASS
/* tcpc */
ret = mtk_usb_extcon_tcpc_init(extcon);
if (ret < 0)
dev_err(dev, "failed to init tcpc\n");
#endif
g_extcon = extcon;
platform_set_drvdata(pdev, extcon);
#ifdef __CUST_OTG_GPIO_SELECT__
#if __CUST_OTG_GPIO_SELECT__
if(0 > get_otg_select_gpio()) {
printk("UP_OTG_get_otg_select_gpio failed.\n");
}
#ifdef CONFIG_WIRELESS_POWER_MT5728
gpio_direction_input(up_otg_select_gpio_num);
#endif
#endif
#endif
#ifdef __CUST_TCPC_POLARITY_DETECT__
ret = device_create_file(dev, &dev_attr_up_tcpc_polarity);
if (ret)
dev_err(dev, "failed to create polarity attr\n");
#endif
return 0;
}
static int mtk_usb_extcon_remove(struct platform_device *pdev)
{
struct mtk_extcon_info *extcon = platform_get_drvdata(pdev);
if (extcon->dev_conn.id)
device_connection_remove(&extcon->dev_conn);
return 0;
}
static void mtk_usb_extcon_shutdown(struct platform_device *pdev)
{
struct mtk_extcon_info *extcon = platform_get_drvdata(pdev);
if (extcon->c_role == DUAL_PROP_DR_HOST) {
dev_info(extcon->dev, "set host vbus off when shutdown\n");
mtk_usb_extcon_set_vbus(extcon, false);
}
}
static const struct of_device_id mtk_usb_extcon_of_match[] = {
{ .compatible = "mediatek,extcon-usb", },
{ },
};
MODULE_DEVICE_TABLE(of, mtk_usb_extcon_of_match);
static struct platform_driver mtk_usb_extcon_driver = {
.probe = mtk_usb_extcon_probe,
.remove = mtk_usb_extcon_remove,
.shutdown = mtk_usb_extcon_shutdown,
.driver = {
.name = "mtk-extcon-usb",
.of_match_table = mtk_usb_extcon_of_match,
},
};
static int __init mtk_usb_extcon_init(void)
{
return platform_driver_register(&mtk_usb_extcon_driver);
}
late_initcall_sync(mtk_usb_extcon_init);
static void __exit mtk_usb_extcon_exit(void)
{
platform_driver_unregister(&mtk_usb_extcon_driver);
}
module_exit(mtk_usb_extcon_exit);
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