63 lines
1.8 KiB
Diff
63 lines
1.8 KiB
Diff
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From 187c5298a12292eab55e3eb09e70e2b145646bcc Mon Sep 17 00:00:00 2001
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From: Grigor Tovmasyan <Grigor.Tovmasyan@synopsys.com>
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Date: Wed, 29 Aug 2018 21:02:57 +0400
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Subject: [PATCH 14/53] usb: dwc2: gadget: Add handler for WkupAlert interrupt
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Added interrupt handler for WkupAlert interrupt.
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This interrupt should initiate Remote Wake up.
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Acked-by: Minas Harutyunyan <hminas@synopsys.com>
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Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
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Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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---
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drivers/usb/dwc2/gadget.c | 25 +++++++++++++++++++++++++
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1 file changed, 25 insertions(+)
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diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
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index 24bd9fdabc67..2d6d2c8244de 100644
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--- a/drivers/usb/dwc2/gadget.c
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+++ b/drivers/usb/dwc2/gadget.c
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@@ -246,6 +246,27 @@ int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg)
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}
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/**
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+ * dwc2_gadget_wkup_alert_handler - Handler for WKUP_ALERT interrupt
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+ *
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+ * @hsotg: Programming view of the DWC_otg controller
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+ *
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+ */
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+static void dwc2_gadget_wkup_alert_handler(struct dwc2_hsotg *hsotg)
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+{
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+ u32 gintsts2;
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+ u32 gintmsk2;
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+
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+ gintsts2 = dwc2_readl(hsotg, GINTSTS2);
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+ gintmsk2 = dwc2_readl(hsotg, GINTMSK2);
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+
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+ if (gintsts2 & GINTSTS2_WKUP_ALERT_INT) {
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+ dev_dbg(hsotg->dev, "%s: Wkup_Alert_Int\n", __func__);
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+ dwc2_clear_bit(hsotg, GINTSTS2, GINTSTS2_WKUP_ALERT_INT);
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+ dwc2_set_bit(hsotg, DCFG, DCTL_RMTWKUPSIG);
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+ }
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+}
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+
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+/**
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* dwc2_hsotg_tx_fifo_average_depth - returns average depth of device mode
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* TX FIFOs
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*
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@@ -3730,6 +3751,10 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
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if (gintsts & IRQ_RETRY_MASK && --retry_count > 0)
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goto irq_retry;
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+ /* Check WKUP_ALERT interrupt*/
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+ if (hsotg->params.service_interval)
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+ dwc2_gadget_wkup_alert_handler(hsotg);
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+
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spin_unlock(&hsotg->lock);
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return IRQ_HANDLED;
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--
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2.11.0
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