// SPDX-License-Identifier: GPL-2.0+/* * USB of helper code */ #include <linux/kernel.h>#include <linux/module.h>#include <linux/of.h>#include <linux/usb/of.h>#include <linux/usb/otg.h> static const char *const usbphy_modes[] = {	[USBPHY_INTERFACE_MODE_UNKNOWN]	= "",	[USBPHY_INTERFACE_MODE_UTMI]	= "utmi",	[USBPHY_INTERFACE_MODE_UTMIW]	= "utmi_wide",	[USBPHY_INTERFACE_MODE_ULPI]	= "ulpi",	[USBPHY_INTERFACE_MODE_SERIAL]	= "serial",	[USBPHY_INTERFACE_MODE_HSIC]	= "hsic",}; /** * of_usb_get_phy_mode - Get phy mode for given device_node * @np:	Pointer to the given device_node * * The function gets phy interface string from property 'phy_type', * and returns the corresponding enum usb_phy_interface */enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np){	const char *phy_type;	int err, i; 	err = of_property_read_string(np, "phy_type", &phy_type);	if (err < 0)		return USBPHY_INTERFACE_MODE_UNKNOWN; 	for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++)		if (!strcmp(phy_type, usbphy_modes[i]))			return i; 	return USBPHY_INTERFACE_MODE_UNKNOWN;}EXPORT_SYMBOL_GPL(of_usb_get_phy_mode);