38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
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From 4abe453750db8ada8b0a56c45c89ab18920e9a80 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 21:02:28 +0400
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Subject: [PATCH 13/53] usb: dwc2: gadget: enable WKUP_ALERT interrupt
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WKUP_ALERT interrupt should be unmask when lpm mode is enabled.
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This interrupt is asserted when the device is in L1 for the duration
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mentioned in GREFCLK.SOF_CNN_WKUP_ALERT. This is used to alert SW to
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initiate Remote wake up so that the device resumes in time in order not
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to lose sync with the host frame number.
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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 | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
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index e8dd6897e2c3..24bd9fdabc67 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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@@ -5003,6 +5003,10 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg)
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val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0;
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dwc2_writel(hsotg, val, GLPMCFG);
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dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG));
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+
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+ /* Unmask WKUP_ALERT Interrupt */
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+ if (hsotg->params.service_interval)
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+ dwc2_set_bit(hsotg, GINTMSK2, GINTMSK2_WKUP_ALERT_INT_MSK);
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}
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/**
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--
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2.11.0
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