X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=drivers%2Fusb%2Fdwc2%2Fplatform.c;h=8e1728b39a497edb08bf6232b75c63b31c72d40f;hp=8f7b34c8a5d4085d07d228f210248bb1ec988b8c;hb=c913fc4146ba7c280e074558d0a461e5c6f07c8a;hpb=8185041f5fa6f02acf75229a590e16aac028fc5e

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index 8f7b34c8a5d4..8e1728b39a49 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -45,6 +45,7 @@
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_data/s3c-hsotg.h>
+#include <linux/reset.h>
 
 #include <linux/usb/of.h>
 
@@ -369,6 +370,24 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg)
 {
 	int i, ret;
 
+	hsotg->reset = devm_reset_control_get_optional(hsotg->dev, "dwc2");
+	if (IS_ERR(hsotg->reset)) {
+		ret = PTR_ERR(hsotg->reset);
+		switch (ret) {
+		case -ENOENT:
+		case -ENOTSUPP:
+			hsotg->reset = NULL;
+			break;
+		default:
+			dev_err(hsotg->dev, "error getting reset control %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	if (hsotg->reset)
+		reset_control_deassert(hsotg->reset);
+
 	/* Set default UTMI width */
 	hsotg->phyif = GUSBCFG_PHYIF16;
 
@@ -466,6 +485,9 @@ static int dwc2_driver_remove(struct platform_device *dev)
 	if (hsotg->ll_hw_enabled)
 		dwc2_lowlevel_hw_disable(hsotg);
 
+	if (hsotg->reset)
+		reset_control_assert(hsotg->reset);
+
 	return 0;
 }