Commit b77b0d00 authored by Artur Petrosyan's avatar Artur Petrosyan Committed by Greg Kroah-Hartman
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usb: dwc2: Add partial power down exit flow in wakeup intr. 



According to programming guide added host partial power
down exit flow in wakeup detected interrupt handler.

Acked-by: default avatarMinas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: default avatarArtur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094454.5BBCBA0094@mailhost.synopsys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c9c394ab

drivers/usb/dwc2/core_intr.c

+8 −9
Original line number Diff line number Diff line
@@ -423,15 +423,14 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) 
			hsotg->lx_state = DWC2_L0;

		}

	} else {

		if (hsotg->params.power_down)

			return;



		if (hsotg->lx_state != DWC2_L1) {

			u32 pcgcctl = dwc2_readl(hsotg, PCGCTL);



			/* Restart the Phy Clock */

			pcgcctl &= ~PCGCTL_STOPPCLK;

			dwc2_writel(hsotg, pcgcctl, PCGCTL);

		if (hsotg->lx_state == DWC2_L2) {

			if (hsotg->in_ppd) {

				ret = dwc2_exit_partial_power_down(hsotg, 1,

								   true);

				if (ret)

					dev_err(hsotg->dev,

						"exit partial_power_down failed\n");

			}



			/*

			 * If we've got this quirk then the PHY is stuck upon