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usb: otg: OMAP4430: Save/restore the context

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Add the context save/restore for the control module register
used for OMAP4430 musb with UTMI embedded PHY interface.

Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Hema HK
2011-02-28 14:19:36 +05:30
committed by Felipe Balbi
parent 37db3af11f
commit 8c59ef3811
1 changed files with 7 additions and 0 deletions
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7
arch/arm/mach-omap2/omap_phy_internal.c
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@@ -43,6 +43,7 @@
static struct clk *phyclk, *clk48m, *clk32k; static struct clk *phyclk, *clk48m, *clk32k;
static void __iomem *ctrl_base; static void __iomem *ctrl_base;
static int usbotghs_control;
int omap4430_phy_init(struct device *dev) int omap4430_phy_init(struct device *dev)
{ {
@@ -129,6 +130,9 @@ int omap4430_phy_suspend(struct device *dev, int suspend)
omap4430_phy_set_clk(dev, 0); omap4430_phy_set_clk(dev, 0);
/* Power down the phy */ /* Power down the phy */
__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF); __raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
/* save the context */
usbotghs_control = __raw_readl(ctrl_base + USBOTGHS_CONTROL);
} else { } else {
/* Enable the internel phy clcoks */ /* Enable the internel phy clcoks */
omap4430_phy_set_clk(dev, 1); omap4430_phy_set_clk(dev, 1);
@@ -137,6 +141,9 @@ int omap4430_phy_suspend(struct device *dev, int suspend)
__raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF); __raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF);
mdelay(200); mdelay(200);
} }
/* restore the context */
__raw_writel(usbotghs_control, ctrl_base + USBOTGHS_CONTROL);
} }
return 0; return 0;