http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/usb_otg.h

// include/linux/usb_otg.h /* * These APIs may be used between USB controllers. USB device drivers * (for either host or peripheral roles) don't use these calls; they * continue to use just usb_device and usb_gadget. */ /* OTG defines lots of enumeration states before device reset */ enum usb_otg_state { OTG_STATE_UNDEFINED = 0, /* single-role peripheral, and dual-role default-b */ OTG_STATE_B_IDLE, OTG_STATE_B_SRP_INIT, OTG_STATE_B_PERIPHERAL, /* extra dual-role default-b states */ OTG_STATE_B_WAIT_ACON, OTG_STATE_B_HOST, /* dual-role default-a */ OTG_STATE_A_IDLE, OTG_STATE_A_WAIT_VRISE, OTG_STATE_A_WAIT_BCON, OTG_STATE_A_HOST, OTG_STATE_A_SUSPEND, OTG_STATE_A_PERIPHERAL, OTG_STATE_A_WAIT_VFALL, OTG_STATE_A_VBUS_ERR, }; /* * the otg driver needs to interact with both device side and host side * usb controllers. it decides which controller is active at a given * moment, using the transceiver, ID signal, HNP and sometimes static * configuration information (including "board isn't wired for otg"). */ struct otg_transceiver { struct device *dev; const char *label; u8 default_a; enum usb_otg_state state; struct usb_bus *host; struct usb_gadget *gadget; /* to pass extra port status to the root hub */ u16 port_status; u16 port_change; /* bind/unbind the host controller */ int (*set_host)(struct otg_transceiver *otg, struct usb_bus *host); /* bind/unbind the peripheral controller */ int (*set_peripheral)(struct otg_transceiver *otg, struct usb_gadget *gadget); /* effective for B devices, ignored for A-peripheral */ int (*set_power)(struct otg_transceiver *otg, unsigned mA); /* for non-OTG B devices: set transceiver into suspend mode */ int (*set_suspend)(struct otg_transceiver *otg, int suspend); /* for B devices only: start session with A-Host */ int (*start_srp)(struct otg_transceiver *otg); /* start or continue HNP role switch */ int (*start_hnp)(struct otg_transceiver *otg); }; /* for board-specific init logic */ extern int otg_set_transceiver(struct otg_transceiver *); /* for usb host and peripheral controller drivers */ extern struct otg_transceiver *otg_get_transceiver(void); static inline int otg_start_hnp(struct otg_transceiver *otg) { return otg->start_hnp(otg); } /* for HCDs */ static inline int otg_set_host(struct otg_transceiver *otg, struct usb_bus *host) { return otg->set_host(otg, host); } /* for usb peripheral controller drivers */ static inline int otg_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *periph) { return otg->set_peripheral(otg, periph); } static inline int otg_set_power(struct otg_transceiver *otg, unsigned mA) { return otg->set_power(otg, mA); } static inline int otg_set_suspend(struct otg_transceiver *otg, int suspend) { if (otg->set_suspend != NULL) return otg->set_suspend(otg, suspend); else return 0; } static inline int otg_start_srp(struct otg_transceiver *otg) { return otg->start_srp(otg); } /* for OTG controller drivers (and maybe other stuff) */ extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);