From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.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,
linux-kernel@vger.kernel.org,
Manu Gautam <mgautam@codeaurora.org>,
Sandeep Maheswaram <sanm@codeaurora.org>
Subject: [PATCH v6 5/5] usb: dwc3: qcom: Set genpd active wakeup flag for usb gdsc
Date: Fri, 16 Apr 2021 15:31:53 +0530 [thread overview]
Message-ID: <1618567313-25373-6-git-send-email-sanm@codeaurora.org> (raw)
In-Reply-To: <1618567313-25373-1-git-send-email-sanm@codeaurora.org>
Set genpd active wakeup flag for usb gdsc if wakeup capable devices
are connected so that wake up happens without reenumeration.
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
---
drivers/usb/dwc3/dwc3-qcom.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index b1e9061..b61dc0b 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -17,9 +17,11 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
+#include <linux/pm_domain.h>
#include <linux/usb/of.h>
#include <linux/reset.h>
#include <linux/iopoll.h>
+#include <linux/usb/hcd.h>
#include "core.h"
@@ -354,10 +356,19 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
{
u32 val;
int i, ret;
+ struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
+ struct usb_hcd *hcd;
+ struct generic_pm_domain *genpd = pd_to_genpd(qcom->dev->pm_domain);
if (qcom->is_suspended)
return 0;
+ if (dwc->xhci) {
+ hcd = platform_get_drvdata(dwc->xhci);
+ if (usb_wakeup_enabled_descendants(hcd->self.root_hub))
+ genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
+ }
+
val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG);
if (!(val & PWR_EVNT_LPM_IN_L2_MASK))
dev_err(qcom->dev, "HS-PHY not in L2\n");
@@ -382,9 +393,15 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
int ret;
int i;
+ struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
+ struct generic_pm_domain *genpd = pd_to_genpd(qcom->dev->pm_domain);
+
if (!qcom->is_suspended)
return 0;
+ if (dwc->xhci)
+ genpd->flags &= ~GENPD_FLAG_ACTIVE_WAKEUP;
+
if (device_may_wakeup(qcom->dev))
dwc3_qcom_disable_interrupts(qcom);
--
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:[~2021-04-16 10:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 10:01 [PATCH v6 0/5] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2021-04-16 10:01 ` [PATCH v6 1/5] usb: dwc3: host: Add suspend_quirk for dwc3 host Sandeep Maheswaram
2021-04-19 20:53 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 2/5] usb: dwc3: core: Host wake up support from system suspend Sandeep Maheswaram
2021-04-19 23:16 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 3/5] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Sandeep Maheswaram
2021-04-19 19:37 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 4/5] usb: dwc3: qcom: Configure wakeup interrupts during suspend Sandeep Maheswaram
2021-04-19 23:22 ` Matthias Kaehlcke
2021-04-16 10:01 ` Sandeep Maheswaram [this message]
2021-04-20 0:12 ` [PATCH v6 5/5] usb: dwc3: qcom: Set genpd active wakeup flag for usb gdsc Matthias Kaehlcke
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