Adding the suspend and resume funtionality to DWC3 core.
Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
Signed-off-by: Vikas C Sajjan <vikas.sajjan@xxxxxxxxxx>
CC: Doug Anderson <dianders@xxxxxxxxxxxx>
---
drivers/usb/dwc3/core.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index b415c0c..0699061 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -622,11 +622,65 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM
+static int dwc3_resume(struct device *dev)
+{
+ struct dwc3 *dwc = dev_get_drvdata(dev);
+ int ret;
+
+ usb_phy_init(dwc->usb2_phy);
+ usb_phy_init(dwc->usb3_phy);
+
+ ret = dwc3_event_buffers_setup(dwc);
+ if (ret < 0)
+ return ret;
+
+ switch (dwc->mode) {
+ case DWC3_MODE_DEVICE:
+ dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
+ break;
+ case DWC3_MODE_HOST:
+ dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
+ break;
+ case DWC3_MODE_DRD:
+ dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
+ }
+
+ /* runtime set active to reflect active state. */
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ return 0;
+}
+
+static int dwc3_suspend(struct device *dev)
+{
+ struct dwc3 *dwc = dev_get_drvdata(dev);
+
+ dwc3_event_buffers_cleanup(dwc);
+
+ usb_phy_shutdown(dwc->usb2_phy);
+ usb_phy_shutdown(dwc->usb3_phy);
+
+ return 0;
+}
+
+static const struct dev_pm_ops dwc3_pm_ops = {
+ .suspend = dwc3_suspend,
+ .resume = dwc3_resume,
+};
+#define DWC3_PM_OPS &(dwc3_pm_ops)
+#else
+#define DWC3_PM_OPS NULL
+#endif /* CONFIG_PM */
+
static struct platform_driver dwc3_driver = {
.probe = dwc3_probe,
.remove = __devexit_p(dwc3_remove),
.driver = {
.name = "dwc3",
+ .pm = DWC3_PM_OPS,
},
};
--
1.7.6.5
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