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Commit a0cd7784 authored by Pratham Pratap's avatar Pratham Pratap
Browse files

usb: phy: snps: Enable auto-resume during host mode bus suspend 



Currently driver is enabling auto-resume irrespective of whether
peripheral is connected to the host or not. Adding PHY flags before
enabling auto-resume ensures that some peripheral must have been
connected before bus suspend. This change enables auto-resume only
during host mode real bus suspend.

Change-Id: Ifed2f0a773ace31738628a988062f96e92efad44
Signed-off-by: default avatarPratham Pratap <prathampratap@codeaurora.org>
parent 702cade0

drivers/usb/phy/phy-msm-snps-hs.c

+17 −9
Original line number Diff line number Diff line
@@ -478,7 +478,15 @@ static int msm_hsphy_set_suspend(struct usb_phy *uphy, int suspend) 
	if (suspend) { /* Bus suspend */

		if (phy->cable_connected ||

			(phy->phy.flags & PHY_HOST_MODE)) {

			/* Enable auto-resume functionality by pulsing signal */

			/* Enable auto-resume functionality only when

			 * there is some peripheral connected and real

			 * bus suspend happened

			 */

			if ((phy->phy.flags & PHY_HSFS_MODE) ||

				(phy->phy.flags & PHY_LS_MODE)) {

				/* Enable auto-resume functionality by pulsing

				 * signal

				 */

				msm_usb_write_readback(phy->base,

					USB2_PHY_USB_PHY_HS_PHY_CTRL2,

					USB2_AUTO_RESUME, USB2_AUTO_RESUME);
@@ -486,7 +494,7 @@ static int msm_hsphy_set_suspend(struct usb_phy *uphy, int suspend) 
				msm_usb_write_readback(phy->base,

					USB2_PHY_USB_PHY_HS_PHY_CTRL2,

					USB2_AUTO_RESUME, 0);



			}

			msm_hsphy_enable_clocks(phy, false);

		} else {/* Cable disconnect */

			mutex_lock(&phy->phy_lock);