diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 16 | ||||
| -rw-r--r-- | drivers/usb/dwc3/gadget.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7f4e6dd63c00..7d00738b4b60 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -68,6 +68,22 @@ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) } /** + * dwc3_gadget_get_link_state - Gets current state of USB Link + * @dwc: pointer to our context structure + * + * Caller should take care of locking. This function will + * return the link state on success (>= 0) or -ETIMEDOUT. + */ +int dwc3_gadget_get_link_state(struct dwc3 *dwc) +{ + u32 reg; + + reg = dwc3_readl(dwc->regs, DWC3_DSTS); + + return DWC3_DSTS_USBLNKST(reg); +} + +/** * dwc3_gadget_set_link_state - Sets USB Link to a particular State * @dwc: pointer to our context structure * @state: the state to put link into diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index febe1aa7b714..d10124477872 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -86,6 +86,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status); int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode); +int dwc3_gadget_get_link_state(struct dwc3 *dwc); int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state); void dwc3_ep0_interrupt(struct dwc3 *dwc, |