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// SPDX-License-Identifier: GPL-2.0+
/*
* USB of helper code
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#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);
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