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Commit e57ebc1d authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: gadget: pretty print link states 



this makes it slightly easier to read link state
change interrupt logs.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 40cc57c7

drivers/usb/dwc3/gadget.c

+41 −3
Original line number Diff line number Diff line
@@ -302,6 +302,42 @@ static const char *dwc3_gadget_ep_cmd_string(u8 cmd) 
	}

}



static const char *dwc3_gadget_link_string(enum dwc3_link_state link_state)

{

	switch (link_state) {

	case DWC3_LINK_STATE_U0:

		return "U0";

	case DWC3_LINK_STATE_U1:

		return "U1";

	case DWC3_LINK_STATE_U2:

		return "U2";

	case DWC3_LINK_STATE_U3:

		return "U3";

	case DWC3_LINK_STATE_SS_DIS:

		return "SS.Disabled";

	case DWC3_LINK_STATE_RX_DET:

		return "RX.Detect";

	case DWC3_LINK_STATE_SS_INACT:

		return "SS.Inactive";

	case DWC3_LINK_STATE_POLL:

		return "Polling";

	case DWC3_LINK_STATE_RECOV:

		return "Recovery";

	case DWC3_LINK_STATE_HRESET:

		return "Hot Reset";

	case DWC3_LINK_STATE_CMPLY:

		return "Compliance";

	case DWC3_LINK_STATE_LPBK:

		return "Loopback";

	case DWC3_LINK_STATE_RESET:

		return "Reset";

	case DWC3_LINK_STATE_RESUME:

		return "Resume";

	default:

		return "UNKNOWN link state\n";

	}

}



int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param)

{

	u32		timeout = 500;
@@ -2449,8 +2485,6 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 
		}

	}



	dwc->link_state = next;



	switch (next) {

	case DWC3_LINK_STATE_U1:

		if (dwc->speed == USB_SPEED_SUPER)
@@ -2468,7 +2502,11 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 
		break;

	}



	dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state);

	dev_vdbg(dwc->dev, "link change: %s [%d] -> %s [%d]\n",

			dwc3_gadget_link_string(dwc->link_state),

			dwc->link_state, dwc3_gadget_link_string(next), next);



	dwc->link_state = next;

}



static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc,