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/phy/phy.h>
13 #include <linux/usb/phy.h>
19 /* old usb_phy interface */
20 struct usb_phy
*usb_phy
;
22 struct usb_gadget
*gadget
;
24 enum usb_otg_state state
;
26 /* bind/unbind the host controller */
27 int (*set_host
)(struct usb_otg
*otg
, struct usb_bus
*host
);
29 /* bind/unbind the peripheral controller */
30 int (*set_peripheral
)(struct usb_otg
*otg
,
31 struct usb_gadget
*gadget
);
33 /* effective for A-peripheral, ignored for B devices */
34 int (*set_vbus
)(struct usb_otg
*otg
, bool enabled
);
36 /* for B devices only: start session with A-Host */
37 int (*start_srp
)(struct usb_otg
*otg
);
39 /* start or continue HNP role switch */
40 int (*start_hnp
)(struct usb_otg
*otg
);
44 extern const char *usb_otg_state_string(enum usb_otg_state state
);
46 /* Context: can sleep */
48 otg_start_hnp(struct usb_otg
*otg
)
50 if (otg
&& otg
->start_hnp
)
51 return otg
->start_hnp(otg
);
56 /* Context: can sleep */
58 otg_set_vbus(struct usb_otg
*otg
, bool enabled
)
60 if (otg
&& otg
->set_vbus
)
61 return otg
->set_vbus(otg
, enabled
);
68 otg_set_host(struct usb_otg
*otg
, struct usb_bus
*host
)
70 if (otg
&& otg
->set_host
)
71 return otg
->set_host(otg
, host
);
76 /* for usb peripheral controller drivers */
78 /* Context: can sleep */
80 otg_set_peripheral(struct usb_otg
*otg
, struct usb_gadget
*periph
)
82 if (otg
&& otg
->set_peripheral
)
83 return otg
->set_peripheral(otg
, periph
);
89 otg_start_srp(struct usb_otg
*otg
)
91 if (otg
&& otg
->start_srp
)
92 return otg
->start_srp(otg
);
97 /* for OTG controller drivers (and maybe other stuff) */
98 extern int usb_bus_start_enum(struct usb_bus
*bus
, unsigned port_num
);
103 USB_DR_MODE_PERIPHERAL
,
107 #endif /* __LINUX_USB_OTG_H */
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