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authorGrigor Tovmasyan <Grigor.Tovmasyan@synopsys.com>2018-08-29 21:02:57 +0400
committerFelipe Balbi <felipe.balbi@linux.intel.com>2018-10-02 10:50:43 +0300
commit187c5298a12292eab55e3eb09e70e2b145646bcc (patch)
tree9c135c57d9470188493f576d94d283b2fa0dfc20 /drivers/usb/dwc2
parent4abe453750db8ada8b0a56c45c89ab18920e9a80 (diff)
downloadlinux-187c5298a12292eab55e3eb09e70e2b145646bcc.tar.bz2
usb: dwc2: gadget: Add handler for WkupAlert interrupt
Added interrupt handler for WkupAlert interrupt. This interrupt should initiate Remote Wake up. Acked-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2')
-rw-r--r--drivers/usb/dwc2/gadget.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 24bd9fdabc67..2d6d2c8244de 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -246,6 +246,27 @@ int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg)
}
/**
+ * dwc2_gadget_wkup_alert_handler - Handler for WKUP_ALERT interrupt
+ *
+ * @hsotg: Programming view of the DWC_otg controller
+ *
+ */
+static void dwc2_gadget_wkup_alert_handler(struct dwc2_hsotg *hsotg)
+{
+ u32 gintsts2;
+ u32 gintmsk2;
+
+ gintsts2 = dwc2_readl(hsotg, GINTSTS2);
+ gintmsk2 = dwc2_readl(hsotg, GINTMSK2);
+
+ if (gintsts2 & GINTSTS2_WKUP_ALERT_INT) {
+ dev_dbg(hsotg->dev, "%s: Wkup_Alert_Int\n", __func__);
+ dwc2_clear_bit(hsotg, GINTSTS2, GINTSTS2_WKUP_ALERT_INT);
+ dwc2_set_bit(hsotg, DCFG, DCTL_RMTWKUPSIG);
+ }
+}
+
+/**
* dwc2_hsotg_tx_fifo_average_depth - returns average depth of device mode
* TX FIFOs
*
@@ -3730,6 +3751,10 @@ irq_retry:
if (gintsts & IRQ_RETRY_MASK && --retry_count > 0)
goto irq_retry;
+ /* Check WKUP_ALERT interrupt*/
+ if (hsotg->params.service_interval)
+ dwc2_gadget_wkup_alert_handler(hsotg);
+
spin_unlock(&hsotg->lock);
return IRQ_HANDLED;