1cd8ae19a9
Add backported patched from 5.x from usb related fixes Up kernel version to most recent lts
38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
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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