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Message-Id: <20210408094526.4DD7AA022E@mailhost.synopsys.com>
Date: Thu, 08 Apr 2021 13:45:25 +0400
From: Artur Petrosyan <Arthur.Petrosyan@...opsys.com>
To: Felipe Balbi <balbi@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: John Youn <John.Youn@...opsys.com>,
Artur Petrosyan <Arthur.Petrosyan@...opsys.com>
Subject: [PATCH v3 08/14] usb: dwc2: Add exit partial power down when port reset is asserted
Adds Partial Power Down exiting flow when set port feature
reset is received in suspended state.
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@...opsys.com>
---
Changes in v3:
- None
Changes in v2:
- None
drivers/usb/dwc2/hcd.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 720354df014b..7c7496719152 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -3694,6 +3694,15 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION &&
hsotg->hibernated)
dwc2_exit_hibernation(hsotg, 0, 1, 1);
+
+ if (hsotg->in_ppd) {
+ retval = dwc2_exit_partial_power_down(hsotg, 1,
+ true);
+ if (retval)
+ dev_err(hsotg->dev,
+ "exit partial_power_down failed\n");
+ }
+
hprt0 = dwc2_read_hprt0(hsotg);
dev_dbg(hsotg->dev,
"SetPortFeature - USB_PORT_FEAT_RESET\n");
--
2.25.1
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