41dceed51f
Fixes a number of coding style issues in the USB public header files. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
/* USB OTG (On The Go) defines */
|
|
|
|
/*
|
|
* 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);
|