1 /* USB OTG (On The Go) defines */
4 * These APIs may be used between USB controllers. USB device drivers
5 * (for either host or peripheral roles) don't use these calls; they
6 * continue to use just usb_device and usb_gadget.
9 #ifndef __LINUX_USB_OTG_H
10 #define __LINUX_USB_OTG_H
12 #include <linux/usb/phy.h>
19 struct usb_gadget *gadget;
21 enum usb_otg_state state;
23 /* bind/unbind the host controller */
24 int (*set_host)(struct usb_otg *otg, struct usb_bus *host);
26 /* bind/unbind the peripheral controller */
27 int (*set_peripheral)(struct usb_otg *otg,
28 struct usb_gadget *gadget);
30 /* effective for A-peripheral, ignored for B devices */
31 int (*set_vbus)(struct usb_otg *otg, bool enabled);
33 /* for B devices only: start session with A-Host */
34 int (*start_srp)(struct usb_otg *otg);
36 /* start or continue HNP role switch */
37 int (*start_hnp)(struct usb_otg *otg);
41 extern const char *usb_otg_state_string(enum usb_otg_state state);
43 /* Context: can sleep */
45 otg_start_hnp(struct usb_otg *otg)
47 if (otg && otg->start_hnp)
48 return otg->start_hnp(otg);
53 /* Context: can sleep */
55 otg_set_vbus(struct usb_otg *otg, bool enabled)
57 if (otg && otg->set_vbus)
58 return otg->set_vbus(otg, enabled);
65 otg_set_host(struct usb_otg *otg, struct usb_bus *host)
67 if (otg && otg->set_host)
68 return otg->set_host(otg, host);
73 /* for usb peripheral controller drivers */
75 /* Context: can sleep */
77 otg_set_peripheral(struct usb_otg *otg, struct usb_gadget *periph)
79 if (otg && otg->set_peripheral)
80 return otg->set_peripheral(otg, periph);
86 otg_start_srp(struct usb_otg *otg)
88 if (otg && otg->start_srp)
89 return otg->start_srp(otg);
94 /* for OTG controller drivers (and maybe other stuff) */
95 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
100 USB_DR_MODE_PERIPHERAL,
104 #endif /* __LINUX_USB_OTG_H */