92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*
|
|
* usb devicetree helper functions
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <usb/usb.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);
|