diff mbox series

[12/15] usb: dwc2: Add hibernation exiting flow by system resume

Message ID 59963c145b78ce9677ae66c33f84720480bf6882.1618464534.git.Arthur.Petrosyan@synopsys.com (mailing list archive)
State New, archived
Headers show
Series [01/15] usb: dwc2: Update exit hibernation when port reset is asserted | expand

Commit Message

Artur Petrosyan April 15, 2021, 5:40 a.m. UTC 
Adds a new flow of exiting hibernation when PC is resumed
from suspend state.

Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
---
 drivers/usb/dwc2/hcd.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index db8eb1940d17..c92307775863 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4470,6 +4470,16 @@  static int _dwc2_hcd_resume(struct usb_hcd *hcd)
 		set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 		break;
 	case DWC2_POWER_DOWN_PARAM_HIBERNATION:
+		ret = dwc2_exit_hibernation(hsotg, 0, 0, 1);
+		if (ret)
+			dev_err(hsotg->dev, "exit hibernation failed.\n");
+
+		/*
+		 * Set HW accessible bit before powering on the controller
+		 * since an interrupt may rise.
+		 */
+		set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+		break;
 	case DWC2_POWER_DOWN_PARAM_NONE:
 		/*
 		 * If not hibernation nor partial power down are supported,