[PATCH v2 05/12] usb: dwc2: Add exit clock gating from session request interrupt

[Artur Petrosyan]

Added clock gating exit flow from session
request interrupt handler according programming guide.

Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@xxxxxxxxxxxx>
---
 Changes in v2:
 - None

 drivers/usb/dwc2/core_intr.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index c764407e7633..550c52c1a0c7 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -316,12 +316,19 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg)
 		hsotg->lx_state);
 
 	if (dwc2_is_device_mode(hsotg)) {
-		if (hsotg->lx_state == DWC2_L2 && hsotg->in_ppd) {
-			ret = dwc2_exit_partial_power_down(hsotg, 0,
-							   true);
-			if (ret)
-				dev_err(hsotg->dev,
-					"exit power_down failed\n");
+		if (hsotg->lx_state == DWC2_L2) {
+			if (hsotg->in_ppd) {
+				ret = dwc2_exit_partial_power_down(hsotg, 0,
+								   true);
+				if (ret)
+					dev_err(hsotg->dev,
+						"exit power_down failed\n");
+			}
+
+			/* Exit gadget mode clock gating. */
+			if (hsotg->params.power_down ==
+			    DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+				dwc2_gadget_exit_clock_gating(hsotg, 0);
 		}
 
 		/*
-- 
2.25.1