// 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);