usb_otg.h.rej

linux得一些常用命令,以及linux环境下的c编程

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+ // 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 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_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);