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// SPDX-License-Identifier: GPL-2.0
/*
* usb devicetree helper functions
*/
#include <common.h>
#include <usb/usb.h>
#include <usb/phy.h>
#include <of.h>
static const char *usb_dr_modes[] = {
[USB_DR_MODE_UNKNOWN] = "",
[USB_DR_MODE_HOST] = "host",
[USB_DR_MODE_PERIPHERAL] = "peripheral",
[USB_DR_MODE_OTG] = "otg",
};
/**
* of_usb_get_dr_mode - Get dual role mode for given device_node
* @np: Pointer to the given device_node
*
* The function gets phy interface string from property 'dr_mode',
* and returns the correspondig enum usb_dr_mode
*/
enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np,
const char *propname)
{
const char *dr_mode;
int err, i;
if (!propname)
propname = "dr_mode";
err = of_property_read_string(np, propname, &dr_mode);
if (err < 0)
return USB_DR_MODE_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
if (!strcmp(dr_mode, usb_dr_modes[i]))
return i;
return USB_DR_MODE_UNKNOWN;
}
EXPORT_SYMBOL_GPL(of_usb_get_dr_mode);
static const char *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 correspondig enum usb_phy_interface
*/
enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np,
const char *propname)
{
const char *phy_type;
int err, i;
if (!propname)
propname = "phy_type";
err = of_property_read_string(np, propname, &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);
/**
* of_usb_get_maximum_speed - Get maximum speed for given device_node
* @np: Pointer to the given device_node
*
* The function gets maximum speed string from property 'maximum-speed',
* and returns the correspondig enum usb_device_speed
*/
enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np,
const char *propname)
{
const char *maximum_speed;
int err;
if (!propname)
propname = "maximum-speed";
err = of_property_read_string(np, propname, &maximum_speed);
if (err < 0)
return USB_SPEED_UNKNOWN;
return usb_speed_by_string(maximum_speed);
}
EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed);
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