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>,
Mathias Nyman <mathias.nyman@intel.com>
Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
Pratham Pratap <prathampratap@codeaurora.org>,
Sandeep Maheswaram <sanm@codeaurora.org>
Subject: [PATCH v8 6/6] usb: dwc3: qcom: Keep power domain on to support wakeup
Date: Mon, 28 Jun 2021 17:38:17 +0530 [thread overview]
Message-ID: <1624882097-23265-7-git-send-email-sanm@codeaurora.org> (raw)
In-Reply-To: <1624882097-23265-1-git-send-email-sanm@codeaurora.org>
If wakeup capable devices are connected to the controller (directly
or through hubs) at suspend time keep the power domain on in order
to support wakeup from these devices.
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
---
Checking phy_power_off flag instead of usb_wakeup_enabled_descendants
to keep gdsc active.
drivers/usb/dwc3/dwc3-qcom.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 82125bc..ba31aa3 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -17,6 +17,7 @@
#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>
@@ -355,9 +356,15 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
u32 val;
int i, ret;
+ 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->phy_power_off && dwc->xhci)
+ 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 +389,15 @@ 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:[~2021-06-28 12:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-28 12:08 [PATCH v8 0/6] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2021-06-28 12:08 ` [PATCH v8 1/6] usb: dwc3: core: Add HS phy mode variable and phy poweroff flag Sandeep Maheswaram
2021-06-28 12:08 ` [PATCH v8 2/6] usb: host: xhci: plat: Add suspend quirk for dwc3 controller Sandeep Maheswaram
2021-07-12 9:31 ` Felipe Balbi
2021-09-28 23:08 ` Brian Norris
2021-06-28 12:08 ` [PATCH v8 3/6] usb: dwc3: core: Host wake up support from system suspend Sandeep Maheswaram
2021-06-28 12:08 ` [PATCH v8 4/6] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Sandeep Maheswaram
2021-06-28 12:08 ` [PATCH v8 5/6] usb: dwc3: qcom: Configure wakeup interrupts during suspend Sandeep Maheswaram
2021-06-28 12:08 ` Sandeep Maheswaram [this message]
2021-06-28 21:23 ` [PATCH v8 6/6] usb: dwc3: qcom: Keep power domain on to support wakeup Matthias Kaehlcke
2021-07-12 9:42 ` Felipe Balbi
2021-08-18 9:14 ` Sandeep Maheswaram
2021-08-18 9:56 ` Felipe Balbi
2021-09-15 14:05 ` Pavan Kondeti
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