2 * Provides code common for host and device side USB.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation, version 2.
8 * If either host side (ie. CONFIG_USB=y) or device side USB stack
9 * (ie. CONFIG_USB_GADGET=y) is compiled in the kernel, this module is
10 * compiled-in as well. Otherwise, if either of the two stacks is
11 * compiled as module, this file is compiled as module as well.
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/usb/ch9.h>
17 #include <linux/usb/otg.h>
19 const char *usb_otg_state_string(enum usb_otg_state state
)
21 static const char *const names
[] = {
22 [OTG_STATE_A_IDLE
] = "a_idle",
23 [OTG_STATE_A_WAIT_VRISE
] = "a_wait_vrise",
24 [OTG_STATE_A_WAIT_BCON
] = "a_wait_bcon",
25 [OTG_STATE_A_HOST
] = "a_host",
26 [OTG_STATE_A_SUSPEND
] = "a_suspend",
27 [OTG_STATE_A_PERIPHERAL
] = "a_peripheral",
28 [OTG_STATE_A_WAIT_VFALL
] = "a_wait_vfall",
29 [OTG_STATE_A_VBUS_ERR
] = "a_vbus_err",
30 [OTG_STATE_B_IDLE
] = "b_idle",
31 [OTG_STATE_B_SRP_INIT
] = "b_srp_init",
32 [OTG_STATE_B_PERIPHERAL
] = "b_peripheral",
33 [OTG_STATE_B_WAIT_ACON
] = "b_wait_acon",
34 [OTG_STATE_B_HOST
] = "b_host",
37 if (state
< 0 || state
>= ARRAY_SIZE(names
))
42 EXPORT_SYMBOL_GPL(usb_otg_state_string
);
44 const char *usb_speed_string(enum usb_device_speed speed
)
46 static const char *const names
[] = {
47 [USB_SPEED_UNKNOWN
] = "UNKNOWN",
48 [USB_SPEED_LOW
] = "low-speed",
49 [USB_SPEED_FULL
] = "full-speed",
50 [USB_SPEED_HIGH
] = "high-speed",
51 [USB_SPEED_WIRELESS
] = "wireless",
52 [USB_SPEED_SUPER
] = "super-speed",
55 if (speed
< 0 || speed
>= ARRAY_SIZE(names
))
56 speed
= USB_SPEED_UNKNOWN
;
59 EXPORT_SYMBOL_GPL(usb_speed_string
);
61 const char *usb_state_string(enum usb_device_state state
)
63 static const char *const names
[] = {
64 [USB_STATE_NOTATTACHED
] = "not attached",
65 [USB_STATE_ATTACHED
] = "attached",
66 [USB_STATE_POWERED
] = "powered",
67 [USB_STATE_RECONNECTING
] = "reconnecting",
68 [USB_STATE_UNAUTHENTICATED
] = "unauthenticated",
69 [USB_STATE_DEFAULT
] = "default",
70 [USB_STATE_ADDRESS
] = "addresssed",
71 [USB_STATE_CONFIGURED
] = "configured",
72 [USB_STATE_SUSPENDED
] = "suspended",
75 if (state
< 0 || state
>= ARRAY_SIZE(names
))
80 EXPORT_SYMBOL_GPL(usb_state_string
);
82 MODULE_LICENSE("GPL");