usb: dwc2: Enable LPM Transaction Received interrupt

Enable "LPM Transaction Received" interrupt for receive an
interrupt when host will send LPM token.
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc2/core_intr.c

@@ -560,7 +560,7 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg)
 	hird_thres = (glpmcfg & GLPMCFG_HIRD_THRES_MASK &
 			~GLPMCFG_HIRD_THRES_EN) >> GLPMCFG_HIRD_THRES_SHIFT;
 	hird_thres_en = glpmcfg & GLPMCFG_HIRD_THRES_EN;
-	enslpm = glpmcfg & GLPMCFG_SNDLPM;
+	enslpm = glpmcfg & GLPMCFG_ENBLSLPM;
 
 	if (dwc2_is_device_mode(hsotg)) {
 		dev_dbg(hsotg->dev, "HIRD_THRES_EN = %d\n", hird_thres_en);
@@ -595,7 +595,8 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg)
 #define GINTMSK_COMMON	(GINTSTS_WKUPINT | GINTSTS_SESSREQINT |		\
 			 GINTSTS_CONIDSTSCHNG | GINTSTS_OTGINT |	\
 			 GINTSTS_MODEMIS | GINTSTS_DISCONNINT |		\
-			 GINTSTS_USBSUSP | GINTSTS_PRTINT)
+			 GINTSTS_USBSUSP | GINTSTS_PRTINT |		\
+			 GINTSTS_LPMTRANRCVD)
 
 /*
  * This function returns the Core Interrupt register

drivers/usb/dwc2/gadget.c

@@ -3266,7 +3266,8 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
 		GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF |
 		GINTSTS_USBRST | GINTSTS_RESETDET |
 		GINTSTS_ENUMDONE | GINTSTS_OTGINT |
-		GINTSTS_USBSUSP | GINTSTS_WKUPINT;
+		GINTSTS_USBSUSP | GINTSTS_WKUPINT |
+		GINTSTS_LPMTRANRCVD;
 
 	if (!using_desc_dma(hsotg))
 		intmsk |= GINTSTS_INCOMPL_SOIN | GINTSTS_INCOMPL_SOOUT;

drivers/usb/dwc2/hcd.c

@@ -91,6 +91,9 @@ static void dwc2_enable_common_interrupts(struct dwc2_hsotg *hsotg)
 	intmsk |= GINTSTS_WKUPINT | GINTSTS_USBSUSP |
 		  GINTSTS_SESSREQINT;
 
+	if (dwc2_is_device_mode(hsotg) && hsotg->params.lpm)
+		intmsk |= GINTSTS_LPMTRANRCVD;
+
 	dwc2_writel(intmsk, hsotg->regs + GINTMSK);
 }