[PATCH v4 1/5] usb: dwc3: core: Host wake up support from system suspend

[Sandeep Maheswaram]

Avoiding phy powerdown in host mode so that it can be woken up by devices.
Added hs_phy_mode flag to check connection status and set phy mode
and configure interrupts.

Signed-off-by: Sandeep Maheswaram <sanm@xxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/core.c | 14 +++-----------
 drivers/usb/dwc3/core.h |  2 ++
 2 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index bdf0925..0e4bc1e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1672,10 +1672,6 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
 		dwc3_core_exit(dwc);
 		break;
 	case DWC3_GCTL_PRTCAP_HOST:
-		if (!PMSG_IS_AUTO(msg)) {
-			dwc3_core_exit(dwc);
-			break;
-		}
 
 		/* Let controller to suspend HSPHY before PHY driver suspends */
 		if (dwc->dis_u2_susphy_quirk ||
@@ -1733,13 +1729,9 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
 		spin_unlock_irqrestore(&dwc->lock, flags);
 		break;
 	case DWC3_GCTL_PRTCAP_HOST:
-		if (!PMSG_IS_AUTO(msg)) {
-			ret = dwc3_core_init_for_resume(dwc);
-			if (ret)
-				return ret;
-			dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
-			break;
-		}
+
+		dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
+
 		/* Restore GUSB2PHYCFG bits that were modified in suspend */
 		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
 		if (dwc->dis_u2_susphy_quirk)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 74323b1..da63d4a3 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1101,6 +1101,8 @@ struct dwc3 {
 
 	bool			phys_ready;
 
+	unsigned int            hs_phy_mode;
+
 	struct ulpi		*ulpi;
 	bool			ulpi_ready;
 
-- 
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