mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
1c9af65357
This adds two little devicetree helper functions for determining the dr_mode (host, peripheral, otg) and phy_type (utmi, ulpi,...) from the devicetree. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
|
|
* 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 correspondig 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);
|