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usb: dwc2: gadget: enable WKUP_ALERT interrupt

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WKUP_ALERT interrupt should be unmask when lpm mode is enabled.

This interrupt is asserted when the device is in L1 for the duration
mentioned in GREFCLK.SOF_CNN_WKUP_ALERT. This is used to alert SW to
initiate Remote wake up so that the device resumes in time in order not
to lose sync with the host frame number.

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 21:02:28 +04:00 committed by Felipe Balbi
parent 15d9dbf8cb
commit 4abe453750
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc2/gadget.c
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@ -5003,6 +5003,10 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg)
val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0;
dwc2_writel(hsotg, val, GLPMCFG);
dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG));
/* Unmask WKUP_ALERT Interrupt */
if (hsotg->params.service_interval)
dwc2_set_bit(hsotg, GINTMSK2, GINTMSK2_WKUP_ALERT_INT_MSK);
}
/**