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Commit 0b74edbd authored by Azhar Shaikh's avatar Azhar Shaikh
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usb: ehci-msm2: Support for suspend/resume of QUSB2 PHY 



Add support to suspend/resume QUSB2 PHY.

Change-Id: If0d0ffc648d963cb1a71f198cec48e591b47f603
Signed-off-by: default avatarAzhar Shaikh <azhars@codeaurora.org>
parent bd92c12e

drivers/usb/host/ehci-msm2.c

+16 −4
Original line number Diff line number Diff line
@@ -757,6 +757,9 @@ static int msm_ehci_suspend(struct msm_hcd *mhcd) 
		}

	}



	/* Suspend QUSB2 PHY */

	usb_phy_set_suspend(hcd->phy, 1);



	/*

	 * PHY has capability to generate interrupt asynchronously in low

	 * power mode (LPM). This interrupt is level triggered. So USB IRQ
@@ -873,6 +876,9 @@ static int msm_ehci_resume(struct msm_hcd *mhcd) 
	temp &= ~ULPI_STP_CTRL;

	writel_relaxed(temp, USB_USBCMD);



	/* Resume QUSB2 PHY */

	usb_phy_set_suspend(hcd->phy, 0);



	if (!(readl_relaxed(USB_PORTSC) & PORTSC_PHCD))

		goto skip_phy_resume;
@@ -1523,12 +1529,15 @@ static int ehci_msm2_probe(struct platform_device *pdev) 
		hcd->phy = NULL;

	}



	if (hcd->phy)

	if (hcd->phy) {

		usb_phy_init(hcd->phy);

	else if (pdata && pdata->use_sec_phy)

		/* Set Host mode flag */

		hcd->phy->flags |= PHY_HOST_MODE;

	} else if (pdata && pdata->use_sec_phy) {

		mhcd->usb_phy_ctrl_reg = USB_PHY_CTRL2;

	else

	} else {

		mhcd->usb_phy_ctrl_reg = USB_PHY_CTRL;

	}



	ret = msm_hsusb_reset(mhcd);

	if (ret) {
@@ -1676,8 +1685,11 @@ static int ehci_msm2_remove(struct platform_device *pdev) 


	usb_remove_hcd(hcd);



	if (hcd->phy)

	if (hcd->phy) {

		/* Clear host mode flag */

		hcd->phy->flags &= ~PHY_HOST_MODE;

		usb_phy_shutdown(hcd->phy);

	}



	if (mhcd->xo_clk) {

		clk_disable_unprepare(mhcd->xo_clk);