From 4abe453750db8ada8b0a56c45c89ab18920e9a80 Mon Sep 17 00:00:00 2001 From: Grigor Tovmasyan Date: Wed, 29 Aug 2018 21:02:28 +0400 Subject: usb: dwc2: gadget: enable WKUP_ALERT interrupt 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 Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index e8dd6897e2c3..24bd9fdabc67 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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); } /** -- cgit v1.2.3-59-g8ed1b