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Commit 8f49ae0d authored by Mayank Rana's avatar Mayank Rana
Browse files

dwc3: gadget: Add debug event for pull up operation 



This change adds debug event to capture pull up operation request.
It also captures if software fails to perfrom pull-up operation
here.

CRs-Fixed: 1036037
Change-Id: I77ecff3a2ac395ff3799c1b0618fbc7f5eeb03da
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 4ba4c504

drivers/usb/dwc3/gadget.c

+10 −1
Original line number Diff line number Diff line
@@ -1750,6 +1750,7 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend) 


	reg = dwc3_readl(dwc->regs, DWC3_DCTL);

	if (is_on) {

		dbg_event(0xFF, "Pullup_enable", is_on);

		if (dwc->revision <= DWC3_REVISION_187A) {

			reg &= ~DWC3_DCTL_TRGTULST_MASK;

			reg |= DWC3_DCTL_TRGTULST_RX_DET;
@@ -1787,6 +1788,7 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend) 


		dwc->pullups_connected = true;

	} else {

		dbg_event(0xFF, "Pullup_disable", is_on);

		dwc3_gadget_disable_irq(dwc);

		__dwc3_gadget_ep_disable(dwc->eps[0]);

		__dwc3_gadget_ep_disable(dwc->eps[1]);
@@ -1812,8 +1814,15 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend) 
				break;

		}

		timeout--;

		if (!timeout)

		if (!timeout) {

			dev_err(dwc->dev, "failed to %s controller\n",

					is_on ? "start" : "stop");

			if (is_on)

				dbg_event(0xFF, "STARTTOUT", reg);

			else

				dbg_event(0xFF, "STOPTOUT", reg);

			return -ETIMEDOUT;

		}

		udelay(1);

	} while (1);