From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>, Felipe Balbi <balbi@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>
Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Manu Gautam <mgautam@codeaurora.org>,
Sandeep Maheswaram <sanm@codeaurora.org>
Subject: [PATCH v5 1/4] usb: dwc3: core: Host wake up support from system suspend
Date: Mon, 22 Mar 2021 23:01:17 +0530 [thread overview]
Message-ID: <1616434280-32635-2-git-send-email-sanm@codeaurora.org> (raw)
In-Reply-To: <1616434280-32635-1-git-send-email-sanm@codeaurora.org>
Avoiding phy powerdown when wakeup capable devices are connected.
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
---
drivers/usb/dwc3/core.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 94fdbe5..9ecd7ac 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1702,7 +1702,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
dwc3_core_exit(dwc);
break;
case DWC3_GCTL_PRTCAP_HOST:
- if (!PMSG_IS_AUTO(msg)) {
+ if (!PMSG_IS_AUTO(msg) && dwc->phy_power_off) {
dwc3_core_exit(dwc);
break;
}
@@ -1763,13 +1763,15 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
spin_unlock_irqrestore(&dwc->lock, flags);
break;
case DWC3_GCTL_PRTCAP_HOST:
- if (!PMSG_IS_AUTO(msg)) {
+ if (!PMSG_IS_AUTO(msg) && dwc->phy_power_off) {
ret = dwc3_core_init_for_resume(dwc);
if (ret)
return ret;
dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
break;
- }
+ } else
+ dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
+
/* Restore GUSB2PHYCFG bits that were modified in suspend */
reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
if (dwc->dis_u2_susphy_quirk)
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2021-03-22 17:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 17:31 [PATCH v5 0/4] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2021-03-22 17:31 ` Sandeep Maheswaram [this message]
2021-03-23 12:10 ` [PATCH v5 1/4] usb: dwc3: core: Host " Greg Kroah-Hartman
2021-03-24 0:27 ` Matthias Kaehlcke
2021-03-22 17:31 ` [PATCH v5 2/4] usb: dwc3: host: Add suspend_quirk for dwc3 host Sandeep Maheswaram
2021-03-23 12:09 ` Greg Kroah-Hartman
2021-03-23 12:09 ` Greg Kroah-Hartman
2021-03-24 0:38 ` Matthias Kaehlcke
2021-03-22 17:31 ` [PATCH v5 3/4] usb: dwc3: qcom: Configure wakeup interrupts and set genpd active wakeup flag Sandeep Maheswaram
2021-03-23 12:11 ` Greg Kroah-Hartman
2021-03-24 0:49 ` Matthias Kaehlcke
2021-03-24 0:56 ` Matthias Kaehlcke
2021-03-22 17:31 ` [PATCH v5 4/4] arm64: dts: qcom: sc7180: Add wakeup-source property for USB node in IDP and trogdor Sandeep Maheswaram
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