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)  * Support for usb functionality of Hikey series boards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * based on Hisilicon Kirin Soc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (C) 2017-2018 Hilisicon Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *		http://www.huawei.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Authors: Yu Chen <chenyu56@huawei.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mod_devicetable.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/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/of_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/usb/role.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define DEVICE_DRIVER_NAME "hisi_hikey_usb"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define HUB_VBUS_POWER_ON 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define HUB_VBUS_POWER_OFF 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define USB_SWITCH_TO_HUB 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define USB_SWITCH_TO_TYPEC 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define TYPEC_VBUS_POWER_ON 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define TYPEC_VBUS_POWER_OFF 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) struct hisi_hikey_usb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct gpio_desc *otg_switch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct gpio_desc *typec_vbus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	struct gpio_desc *hub_vbus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct gpio_desc *reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct regulator *regulator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct usb_role_switch *hub_role_sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct usb_role_switch *dev_role_sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	enum usb_role role;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct notifier_block nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static void hub_power_ctrl(struct hisi_hikey_usb *hisi_hikey_usb, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	int ret, status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	if (hisi_hikey_usb->hub_vbus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		gpiod_set_value_cansleep(hisi_hikey_usb->hub_vbus, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	if (!hisi_hikey_usb->regulator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	status = regulator_is_enabled(hisi_hikey_usb->regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	if (status == !!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		ret = regulator_enable(hisi_hikey_usb->regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		ret = regulator_disable(hisi_hikey_usb->regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		dev_err(hisi_hikey_usb->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			"Can't switch regulator state to %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			value ? "enabled" : "disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static void usb_switch_ctrl(struct hisi_hikey_usb *hisi_hikey_usb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			    int switch_to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	if (!hisi_hikey_usb->otg_switch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	gpiod_set_value_cansleep(hisi_hikey_usb->otg_switch, switch_to);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static void usb_typec_power_ctrl(struct hisi_hikey_usb *hisi_hikey_usb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				 int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (!hisi_hikey_usb->typec_vbus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	gpiod_set_value_cansleep(hisi_hikey_usb->typec_vbus, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) static void relay_set_role_switch(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	struct hisi_hikey_usb *hisi_hikey_usb = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 							struct hisi_hikey_usb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 							work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct usb_role_switch *sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	enum usb_role role;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if (!hisi_hikey_usb || !hisi_hikey_usb->dev_role_sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	mutex_lock(&hisi_hikey_usb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	switch (hisi_hikey_usb->role) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	case USB_ROLE_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		usb_typec_power_ctrl(hisi_hikey_usb, TYPEC_VBUS_POWER_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		usb_switch_ctrl(hisi_hikey_usb, USB_SWITCH_TO_HUB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		hub_power_ctrl(hisi_hikey_usb, HUB_VBUS_POWER_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	case USB_ROLE_HOST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		hub_power_ctrl(hisi_hikey_usb, HUB_VBUS_POWER_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		usb_switch_ctrl(hisi_hikey_usb, USB_SWITCH_TO_TYPEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		usb_typec_power_ctrl(hisi_hikey_usb, TYPEC_VBUS_POWER_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	case USB_ROLE_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		hub_power_ctrl(hisi_hikey_usb, HUB_VBUS_POWER_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		usb_typec_power_ctrl(hisi_hikey_usb, TYPEC_VBUS_POWER_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		usb_switch_ctrl(hisi_hikey_usb, USB_SWITCH_TO_TYPEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	sw = hisi_hikey_usb->dev_role_sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	role = hisi_hikey_usb->role;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	mutex_unlock(&hisi_hikey_usb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	usb_role_switch_set_role(sw, role);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int hub_usb_role_switch_set(struct usb_role_switch *sw, enum usb_role role)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	struct hisi_hikey_usb *hisi_hikey_usb = usb_role_switch_get_drvdata(sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (!hisi_hikey_usb || !hisi_hikey_usb->dev_role_sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	mutex_lock(&hisi_hikey_usb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	hisi_hikey_usb->role = role;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	mutex_unlock(&hisi_hikey_usb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	schedule_work(&hisi_hikey_usb->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 					 struct hisi_hikey_usb *hisi_hikey_usb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct regulator *regulator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	regulator = devm_regulator_get(&pdev->dev, "hub-vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (IS_ERR(regulator)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		if (PTR_ERR(regulator) == -EPROBE_DEFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			dev_info(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 				 "waiting for hub-vdd-supply to be probed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			return PTR_ERR(regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			"get hub-vdd-supply failed with error %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 			PTR_ERR(regulator));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		return PTR_ERR(regulator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	hisi_hikey_usb->regulator = regulator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	hisi_hikey_usb->reset = devm_gpiod_get(&pdev->dev, "hub_reset_en_gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 					       GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (IS_ERR(hisi_hikey_usb->reset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		return PTR_ERR(hisi_hikey_usb->reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int hisi_hikey_usb_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	struct hisi_hikey_usb *hisi_hikey_usb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct usb_role_switch_desc hub_role_switch = {NULL};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	hisi_hikey_usb = devm_kzalloc(dev, sizeof(*hisi_hikey_usb), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	if (!hisi_hikey_usb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	hisi_hikey_usb->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	hisi_hikey_usb->otg_switch = devm_gpiod_get(dev, "otg-switch",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 						    GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	if (IS_ERR(hisi_hikey_usb->otg_switch))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return PTR_ERR(hisi_hikey_usb->otg_switch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	hisi_hikey_usb->typec_vbus = devm_gpiod_get(dev, "typec-vbus",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 						    GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (IS_ERR(hisi_hikey_usb->typec_vbus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		return PTR_ERR(hisi_hikey_usb->typec_vbus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	/* Parse Kirin 970-specific OF data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	if (of_device_is_compatible(pdev->dev.of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				    "hisilicon,kirin970_hikey_usbhub")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		ret = hisi_hikey_usb_parse_kirin970(pdev, hisi_hikey_usb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		/* hub-vdd33-en is optional */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		hisi_hikey_usb->hub_vbus = devm_gpiod_get_optional(dev, "hub-vdd33-en",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 								   GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		if (IS_ERR(hisi_hikey_usb->hub_vbus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			return PTR_ERR(hisi_hikey_usb->hub_vbus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	hisi_hikey_usb->dev_role_sw = usb_role_switch_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (!hisi_hikey_usb->dev_role_sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		return -EPROBE_DEFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (IS_ERR(hisi_hikey_usb->dev_role_sw))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		return PTR_ERR(hisi_hikey_usb->dev_role_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	INIT_WORK(&hisi_hikey_usb->work, relay_set_role_switch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	mutex_init(&hisi_hikey_usb->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	hub_role_switch.fwnode = dev_fwnode(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	hub_role_switch.set = hub_usb_role_switch_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	hub_role_switch.driver_data = hisi_hikey_usb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	hisi_hikey_usb->hub_role_sw = usb_role_switch_register(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 							       &hub_role_switch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (IS_ERR(hisi_hikey_usb->hub_role_sw)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		usb_role_switch_put(hisi_hikey_usb->dev_role_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		return PTR_ERR(hisi_hikey_usb->hub_role_sw);
^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) 	platform_set_drvdata(pdev, hisi_hikey_usb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static int  hisi_hikey_usb_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	struct hisi_hikey_usb *hisi_hikey_usb = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	if (hisi_hikey_usb->hub_role_sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		usb_role_switch_unregister(hisi_hikey_usb->hub_role_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	if (hisi_hikey_usb->dev_role_sw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		usb_role_switch_put(hisi_hikey_usb->dev_role_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static const struct of_device_id id_table_hisi_hikey_usb[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	{ .compatible = "hisilicon,gpio_hubv1" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	{ .compatible = "hisilicon,kirin970_hikey_usbhub" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_DEVICE_TABLE(of, id_table_hisi_hikey_usb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static struct platform_driver hisi_hikey_usb_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	.probe = hisi_hikey_usb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	.remove = hisi_hikey_usb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		.name = DEVICE_DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		.of_match_table = id_table_hisi_hikey_usb,
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) module_platform_driver(hisi_hikey_usb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) MODULE_AUTHOR("Yu Chen <chenyu56@huawei.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) MODULE_DESCRIPTION("Driver Support for USB functionality of Hikey");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) MODULE_LICENSE("GPL v2");