83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
|
|
* Provides code common for host and device side USB.
|
|
*
|
|
* 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, version 2.
|
|
*
|
|
* If either host side (ie. CONFIG_USB=y) or device side USB stack
|
|
* (ie. CONFIG_USB_GADGET=y) is compiled in the kernel, this module is
|
|
* compiled-in as well. Otherwise, if either of the two stacks is
|
|
* compiled as module, this file is compiled as module as well.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/usb/ch9.h>
|
|
#include <linux/usb/otg.h>
|
|
|
|
const char *usb_otg_state_string(enum usb_otg_state state)
|
|
{
|
|
static const char *const names[] = {
|
|
[OTG_STATE_A_IDLE] = "a_idle",
|
|
[OTG_STATE_A_WAIT_VRISE] = "a_wait_vrise",
|
|
[OTG_STATE_A_WAIT_BCON] = "a_wait_bcon",
|
|
[OTG_STATE_A_HOST] = "a_host",
|
|
[OTG_STATE_A_SUSPEND] = "a_suspend",
|
|
[OTG_STATE_A_PERIPHERAL] = "a_peripheral",
|
|
[OTG_STATE_A_WAIT_VFALL] = "a_wait_vfall",
|
|
[OTG_STATE_A_VBUS_ERR] = "a_vbus_err",
|
|
[OTG_STATE_B_IDLE] = "b_idle",
|
|
[OTG_STATE_B_SRP_INIT] = "b_srp_init",
|
|
[OTG_STATE_B_PERIPHERAL] = "b_peripheral",
|
|
[OTG_STATE_B_WAIT_ACON] = "b_wait_acon",
|
|
[OTG_STATE_B_HOST] = "b_host",
|
|
};
|
|
|
|
if (state < 0 || state >= ARRAY_SIZE(names))
|
|
return "UNDEFINED";
|
|
|
|
return names[state];
|
|
}
|
|
EXPORT_SYMBOL_GPL(usb_otg_state_string);
|
|
|
|
const char *usb_speed_string(enum usb_device_speed speed)
|
|
{
|
|
static const char *const names[] = {
|
|
[USB_SPEED_UNKNOWN] = "UNKNOWN",
|
|
[USB_SPEED_LOW] = "low-speed",
|
|
[USB_SPEED_FULL] = "full-speed",
|
|
[USB_SPEED_HIGH] = "high-speed",
|
|
[USB_SPEED_WIRELESS] = "wireless",
|
|
[USB_SPEED_SUPER] = "super-speed",
|
|
};
|
|
|
|
if (speed < 0 || speed >= ARRAY_SIZE(names))
|
|
speed = USB_SPEED_UNKNOWN;
|
|
return names[speed];
|
|
}
|
|
EXPORT_SYMBOL_GPL(usb_speed_string);
|
|
|
|
const char *usb_state_string(enum usb_device_state state)
|
|
{
|
|
static const char *const names[] = {
|
|
[USB_STATE_NOTATTACHED] = "not attached",
|
|
[USB_STATE_ATTACHED] = "attached",
|
|
[USB_STATE_POWERED] = "powered",
|
|
[USB_STATE_RECONNECTING] = "reconnecting",
|
|
[USB_STATE_UNAUTHENTICATED] = "unauthenticated",
|
|
[USB_STATE_DEFAULT] = "default",
|
|
[USB_STATE_ADDRESS] = "addresssed",
|
|
[USB_STATE_CONFIGURED] = "configured",
|
|
[USB_STATE_SUSPENDED] = "suspended",
|
|
};
|
|
|
|
if (state < 0 || state >= ARRAY_SIZE(names))
|
|
return "UNKNOWN";
|
|
|
|
return names[state];
|
|
}
|
|
EXPORT_SYMBOL_GPL(usb_state_string);
|
|
|
|
MODULE_LICENSE("GPL");
|