From b77b0d0021ec8f6bbcce659c5e6500e2dbc74e3c Mon Sep 17 00:00:00 2001
From: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Date: Thu, 8 Apr 2021 13:44:53 +0400
Subject: [PATCH] usb: dwc2: Add partial power down exit flow in wakeup intr.
According to programming guide added host partial power
down exit flow in wakeup detected interrupt handler.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094454.5BBCBA0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/dwc2/core_intr.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 1fb957ce6c25..0a7f9330907f 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -423,15 +423,14 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
hsotg->lx_state = DWC2_L0;
}
} else {
- if (hsotg->params.power_down)
- return;
-
- if (hsotg->lx_state != DWC2_L1) {
- u32 pcgcctl = dwc2_readl(hsotg, PCGCTL);
-
- /* Restart the Phy Clock */
- pcgcctl &= ~PCGCTL_STOPPCLK;
- dwc2_writel(hsotg, pcgcctl, PCGCTL);
+ if (hsotg->lx_state == DWC2_L2) {
+ if (hsotg->in_ppd) {
+ ret = dwc2_exit_partial_power_down(hsotg, 1,
+ true);
+ if (ret)
+ dev_err(hsotg->dev,
+ "exit partial_power_down failed\n");
+ }
/*
* If we've got this quirk then the PHY is stuck upon