From: Sekhar Nori <nsekhar@ti.com>
Date: Mon, 31 Aug 2015 15:39:08 +0000 (+0530)
Subject: usb: dwc3: support for pinctrl state change during system sleep
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6344475f53977d329ec50f49805fd4ab83df4011;p=deliverable%2Flinux.git

usb: dwc3: support for pinctrl state change during system sleep

Add support for USB DRVVBUS pinctrl state change during
suspend/resume. This helps is conserving power during
system sleep.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 6270581fc7a9..cfbcebe2cf8f 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -34,6 +34,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/of.h>
 #include <linux/acpi.h>
+#include <linux/pinctrl/consumer.h>
 
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
@@ -1125,6 +1126,8 @@ static int dwc3_suspend(struct device *dev)
 	phy_exit(dwc->usb2_generic_phy);
 	phy_exit(dwc->usb3_generic_phy);
 
+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }
 
@@ -1134,6 +1137,8 @@ static int dwc3_resume(struct device *dev)
 	unsigned long	flags;
 	int		ret;
 
+	pinctrl_pm_select_default_state(dev);
+
 	usb_phy_init(dwc->usb3_phy);
 	usb_phy_init(dwc->usb2_phy);
 	ret = phy_init(dwc->usb2_generic_phy);