---

yaml --- r: 265058 b: refs/heads/master c: aabb707 h: refs/heads/master v: v3
git-mirror · Oct 4, 2011 · e5a43f3 · e5a43f3
1 parent 81abd4e
commit e5a43f3
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Showing 3 changed files with 15 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 26ceca9750260997ab82bb84dac122de1e441658
+refs/heads/master: aabb70752361a8b8ca44142a942a5bd133c4d304
diff --git a/trunk/drivers/usb/dwc3/core.h b/trunk/drivers/usb/dwc3/core.h
@@ -161,6 +161,7 @@
 #define DWC3_GCTL_CORESOFTRESET	(1 << 11)
 #define DWC3_GCTL_SCALEDOWN(n)	(n << 4)
 #define DWC3_GCTL_DISSCRAMBLE	(1 << 3)
+#define DWC3_GCTL_DSBLCLKGTNG	(1 << 0)
 
 /* Global USB2 PHY Configuration Register */
 #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
@@ -170,6 +171,11 @@
 #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
 #define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
 
+/* Global HWPARAMS1 Register */
+#define DWC3_GHWPARAMS1_EN_PWROPT(n)	((n & (3 << 24)) >> 24)
+#define DWC3_GHWPARAMS1_EN_PWROPT_NO	0
+#define DWC3_GHWPARAMS1_EN_PWROPT_CLK	1
+
 /* Device Configuration Register */
 #define DWC3_DCFG_DEVADDR(addr)	((addr) << 3)
 #define DWC3_DCFG_DEVADDR_MASK	DWC3_DCFG_DEVADDR(0x7f)

diff --git a/trunk/drivers/usb/dwc3/gadget.c b/trunk/drivers/usb/dwc3/gadget.c
@@ -1164,6 +1164,14 @@ static int dwc3_gadget_start(struct usb_gadget *g,
 	reg &= ~DWC3_GCTL_DISSCRAMBLE;
 	reg |= DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_DEVICE);
 
+	switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams0)) {
+	case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
+		reg &= ~DWC3_GCTL_DSBLCLKGTNG;
+		break;
+	default:
+		dev_dbg(dwc->dev, "No power optimization available\n");
+	}
+
 	/*
 	 * WORKAROUND: DWC3 revisions <1.90a have a bug
 	 * when The device fails to connect at SuperSpeed