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- From 187c5298a12292eab55e3eb09e70e2b145646bcc Mon Sep 17 00:00:00 2001
- From: Grigor Tovmasyan <Grigor.Tovmasyan@synopsys.com>
- Date: Wed, 29 Aug 2018 21:02:57 +0400
- Subject: [PATCH 14/53] 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>
- ---
- drivers/usb/dwc2/gadget.c | 25 +++++++++++++++++++++++++
- 1 file changed, 25 insertions(+)
- 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 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
- 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;
- --
- 2.11.0
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