cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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of.c (1133B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 * USB of helper code
      4 */
      5
      6#include <linux/kernel.h>
      7#include <linux/module.h>
      8#include <linux/of.h>
      9#include <linux/usb/of.h>
     10#include <linux/usb/otg.h>
     11
     12static const char *const usbphy_modes[] = {
     13	[USBPHY_INTERFACE_MODE_UNKNOWN]	= "",
     14	[USBPHY_INTERFACE_MODE_UTMI]	= "utmi",
     15	[USBPHY_INTERFACE_MODE_UTMIW]	= "utmi_wide",
     16	[USBPHY_INTERFACE_MODE_ULPI]	= "ulpi",
     17	[USBPHY_INTERFACE_MODE_SERIAL]	= "serial",
     18	[USBPHY_INTERFACE_MODE_HSIC]	= "hsic",
     19};
     20
     21/**
     22 * of_usb_get_phy_mode - Get phy mode for given device_node
     23 * @np:	Pointer to the given device_node
     24 *
     25 * The function gets phy interface string from property 'phy_type',
     26 * and returns the corresponding enum usb_phy_interface
     27 */
     28enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np)
     29{
     30	const char *phy_type;
     31	int err, i;
     32
     33	err = of_property_read_string(np, "phy_type", &phy_type);
     34	if (err < 0)
     35		return USBPHY_INTERFACE_MODE_UNKNOWN;
     36
     37	for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++)
     38		if (!strcmp(phy_type, usbphy_modes[i]))
     39			return i;
     40
     41	return USBPHY_INTERFACE_MODE_UNKNOWN;
     42}
     43EXPORT_SYMBOL_GPL(of_usb_get_phy_mode);