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usb: dwc2: gadget: Add handler for WkupAlert interrupt

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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>
This commit is contained in:
Grigor Tovmasyan 2018-08-29 21:02:57 +04:00 committed by Felipe Balbi
parent 4abe453750
commit 187c5298a1
1 changed files with 25 additions and 0 deletions
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25
drivers/usb/dwc2/gadget.c
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@ -245,6 +245,27 @@ int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg)
return tx_addr_max - addr;
}
/**
* 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;