From 28e9901cf058f17092b91347c0df0bad62962e5e Mon Sep 17 00:00:00 2001
From: Wu Liang feng <wulf@rock-chips.com>
Date: Thu, 25 Dec 2014 14:52:22 +0800
Subject: [PATCH] USB: DWC_OTG: Support otg suspend and resume pm
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
---
drivers/usb/dwc_otg_310/dwc_otg_driver.c | 41 ++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/usb/dwc_otg_310/dwc_otg_driver.c b/drivers/usb/dwc_otg_310/dwc_otg_driver.c
index fba497d60663..f43627f3b8d8 100755
--- a/drivers/usb/dwc_otg_310/dwc_otg_driver.c
+++ b/drivers/usb/dwc_otg_310/dwc_otg_driver.c
@@ -1530,10 +1530,51 @@ clk_disable:
return retval;
}
+#ifdef CONFIG_PM
+static int dwc_otg_pm_suspend(struct device *dev)
+{
+ dwc_otg_device_t *dwc_otg_device;
+ struct dwc_otg_platform_data *pdata_otg;
+
+ dev_dbg(dev, "dwc_otg PM suspend\n");
+
+ dwc_otg_device = dev_get_platdata(dev);
+ pdata_otg = dwc_otg_device->pldata;
+ pdata_otg->phy_suspend(pdata_otg, USB_PHY_SUSPEND);
+
+ return 0;
+}
+
+static int dwc_otg_pm_resume(struct device *dev)
+{
+ dwc_otg_device_t *dwc_otg_device;
+ struct dwc_otg_platform_data *pdata_otg;
+
+ dev_dbg(dev, "dwc_otg PM resume\n");
+
+ dwc_otg_device = dev_get_platdata(dev);
+ pdata_otg = dwc_otg_device->pldata;
+ pdata_otg->phy_suspend(pdata_otg, USB_PHY_ENABLED);
+
+ return 0;
+}
+#else
+#define dwc_otg_pm_suspend NULL
+#define dwc_otg_pm_resume NULL
+#endif
+
+static const struct dev_pm_ops dwc_otg_dev_pm_ops = {
+ .suspend = dwc_otg_pm_suspend,
+ .resume = dwc_otg_pm_resume,
+};
+
static struct platform_driver dwc_otg_driver = {
.driver = {
.name = (char *)dwc_otg20_driver_name,
.of_match_table = of_match_ptr(usb20_otg_of_match),
+#ifdef CONFIG_PM
+ .pm = &dwc_otg_dev_pm_ops,
+#endif
},
.probe = otg20_driver_probe,
.remove = otg20_driver_remove,
--
2.34.1