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g: enable usb wakeup interrupts

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To make sure cr50 usb works, we need to disable sleep immediately
after the usb controller detects that usb has resumed. The usb WKUPINT
is asserted on usb resume, but cr50 doesn't currently respond to that.
This change umasks the usb wakeup interrupt, so that USB ISR will
disable sleep on resume.

BUG=b:35774906
BRANCH=none
TEST=Run 100 'usb_updater -f' 100 times sleeping 20 seconds in between
each run. Verify there are no failures and cr50 still goes to sleep
between each run.

Change-Id: I1819deaa3988bcf2a85686d1b9d57092ba264c4d
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/450900
Reviewed-by: Vadim Bendebury <vbendeb@google.com>
This commit is contained in:
Mary Ruthven
2017-03-07 18:02:31 -08:00
parent 154868ed90
commit 0de92e2616
1 changed files with 2 additions and 2 deletions
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4
chip/g/usb.c
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@@ -1347,8 +1347,8 @@ void usb_init(void)
GINTMSK(RESETDET) | /* TODO: Do we need this? */
/* Idle, Suspend detected. Should go to sleep. */
GINTMSK(ERLYSUSP) | GINTMSK(USBSUSP) |
/* Watch for first SOF */
GINTMSK(SOF);
/* Watch for first SOF and usb wakeup */
GINTMSK(SOF) | GINTMSK(WKUPINT);
/* Device registers have been setup */
GR_USB_DCTL |= DCTL_PWRONPRGDONE;