linux-kernel - [PATCH 5/9] usb: dwc2: Enable LPM Transaction Received interrupt.

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Date:   Fri, 28 Apr 2017 12:55:01 +0400
From:   Sevak Arakelyan <SEVAK.ARAKELYAN@...opsys.com>
To:     John Youn <John.Youn@...opsys.com>,
        Felipe Balbi <balbi@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Sevak Arakelyan <SEVAK.ARAKELYAN@...opsys.com>
Subject: [PATCH 5/9] usb: dwc2: Enable LPM Transaction Received interrupt.

Enable LPM Trasaction Received interrupt.

Signed-off-by: Sevak Arakelyan <sevaka@...opsys.com>
---
 drivers/usb/dwc2/core_intr.c | 5 +++--
 drivers/usb/dwc2/gadget.c    | 3 ++-
 drivers/usb/dwc2/hcd.c       | 3 +++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 663d56a293af..ea4a6efc33b0 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -553,7 +553,7 @@ static void dwc2_handle_lpm_intr(struct dwc2_hsotg *hsotg)
 	hird_thres = (glpmcfg & GLPMCFG_HIRD_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);
@@ -588,7 +588,8 @@ 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
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index bc3b3fda5000..c763e0e7d64f 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3315,7 +3315,8 @@ 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;
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 740c7e86d31b..b41a64b061b2 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -90,6 +90,9 @@ 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);
 }
 
-- 
2.11.0