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usb: dwc3: turn off VBUS when leaving host mode

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[ Upstream commit 09ed259fac621634d51cd986aa8d65f035662658 ]

VBUS should be turned off when leaving the host mode.
Set GCTL_PRTCAP to device mode in teardown to de-assert DRVVBUS pin to
turn off VBUS power.

Fixes: 5f94adfeed97 ("usb: dwc3: core: refactor mode initialization to its own function")
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bin Liu 2019-12-11 10:10:03 -06:00 committed by Greg Kroah-Hartman
parent 94fd874c64
commit 9b6c072270
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/dwc3/core.c
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@ -936,6 +936,9 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
/* do nothing */
break;
}
/* de-assert DRVVBUS for HOST and OTG mode */
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
}
#define DWC3_ALIGN_MASK (16 - 1)