linux-kernel - [PATCH v1 6/6] usb: dwc3: core: Notify USB3 PHY as well for DRD modes

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Date:   Fri, 21 Jul 2017 16:32:01 +0530
From:   Manu Gautam <mgautam@...eaurora.org>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Felipe Balbi <balbi@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org (open list:DESIGNWARE USB3 DRD IP DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v1 6/6] usb: dwc3: core: Notify USB3 PHY as well for DRD modes

Driver currently notifies only USB3 PHY for mode change.
Extend this to USB3 PHY so that driver based on the mode
can release system resources - clocks, regulators etc.
and can even turn off PHY during runtime suspend.

Signed-off-by: Manu Gautam <mgautam@...eaurora.org>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 326b302..1f6c51e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -156,9 +156,8 @@ static void __dwc3_set_mode(struct work_struct *work)
 		} else {
 			if (dwc->usb2_phy)
 				otg_set_vbus(dwc->usb2_phy->otg, true);
-			if (dwc->usb2_generic_phy)
-				phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
-
+			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
+			phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
 		}
 		break;
 	case DWC3_GCTL_PRTCAP_DEVICE:
@@ -166,8 +165,8 @@ static void __dwc3_set_mode(struct work_struct *work)
 
 		if (dwc->usb2_phy)
 			otg_set_vbus(dwc->usb2_phy->otg, false);
-		if (dwc->usb2_generic_phy)
-			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
+		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
+		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
 
 		ret = dwc3_gadget_init(dwc);
 		if (ret)
@@ -931,8 +930,8 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
 
 		if (dwc->usb2_phy)
 			otg_set_vbus(dwc->usb2_phy->otg, false);
-		if (dwc->usb2_generic_phy)
-			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
+		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
+		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
 
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
@@ -946,8 +945,8 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
 
 		if (dwc->usb2_phy)
 			otg_set_vbus(dwc->usb2_phy->otg, true);
-		if (dwc->usb2_generic_phy)
-			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
+		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
+		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
 
 		ret = dwc3_host_init(dwc);
 		if (ret) {
-- 
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