[5/5,v2] usb: musb: OMAP4430: Save/restore the context

Commit Message

Kalliguddi, Hema Feb. 25, 2011, 1:24 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/omap_phy_internal.c b/arch/arm/mach-omap2/omap_phy_internal.c
index c50441f..e2e605f 100644
--- a/arch/arm/mach-omap2/omap_phy_internal.c
+++ b/arch/arm/mach-omap2/omap_phy_internal.c
@@ -44,6 +44,7 @@ 
 
 static struct clk *phyclk, *clk48m, *clk32k;
 static void __iomem *ctrl_base;
+static int usbotghs_control;
 
 int omap4430_phy_init(struct device *dev)
 {
@@ -130,6 +131,9 @@  int omap4430_phy_suspend(struct device *dev, int suspend)
 		omap4430_phy_set_clk(dev, 0);
 		/* Power down the phy */
 		__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
+
+		/* save the context */
+		usbotghs_control = __raw_readl(ctrl_base + USBOTGHS_CONTROL);
 	} else {
 		/* Enable the internel phy clcoks */
 		omap4430_phy_set_clk(dev, 1);
@@ -138,6 +142,9 @@  int omap4430_phy_suspend(struct device *dev, int suspend)
 			__raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF);
 			mdelay(200);
 		}
+
+		/* restore the context */
+		__raw_writel(usbotghs_control, ctrl_base + USBOTGHS_CONTROL);
 	}
 
 	return 0;