Commit 911f1f88 authored by Paul Zimmerman's avatar Paul Zimmerman Committed by Felipe Balbi
Browse files

usb: dwc3: gadget: implement dwc3_gadget_get_link_state 



This function will be used during hibernation to get
the current link state. It will be needed at least
for Hibernation support.

Signed-off-by: default avatarPaul Zimmerman <paulz@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 4cfcf876

drivers/usb/dwc3/gadget.c

+16 −0
Original line number Diff line number Diff line
@@ -67,6 +67,22 @@ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) 
	return 0;

}



/**

 * 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

drivers/usb/dwc3/gadget.h

+1 −0
Original line number Diff line number Diff line
@@ -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,