From: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
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>, <quic_pkondeti@quicinc.com>,
<quic_ppratap@quicinc.com>,
Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Subject: [PATCH v9 1/5] usb: host: xhci: plat: Add suspend quirk for dwc3 controller
Date: Mon, 1 Nov 2021 13:23:40 +0530 [thread overview]
Message-ID: <1635753224-23975-2-git-send-email-quic_c_sanm@quicinc.com> (raw)
In-Reply-To: <1635753224-23975-1-git-send-email-quic_c_sanm@quicinc.com>
During suspend check if any wakeup capable devices are connected to the
controller (directly or through hubs), and set the wakeup capable property
for xhci plat device.
Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
---
drivers/usb/host/xhci-plat.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c1edcc9..7ab272b 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -431,6 +431,14 @@ static int xhci_plat_remove(struct platform_device *dev)
return 0;
}
+static void xhci_dwc3_suspend_quirk(struct usb_hcd *hcd, struct device *dev)
+{
+ if (usb_wakeup_enabled_descendants(hcd->self.root_hub))
+ device_set_wakeup_capable(dev, true);
+ else
+ device_set_wakeup_capable(dev, false);
+}
+
static int __maybe_unused xhci_plat_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@@ -440,6 +448,10 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev)
ret = xhci_priv_suspend_quirk(hcd);
if (ret)
return ret;
+
+ if (of_device_is_compatible(dev->parent->of_node, "snps,dwc3"))
+ xhci_dwc3_suspend_quirk(hcd, dev);
+
/*
* xhci_suspend() needs `do_wakeup` to know whether host is allowed
* to do wakeup during suspend.
--
2.7.4
next prev parent reply other threads:[~2021-11-01 7:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 7:53 [PATCH v9 0/5] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2021-11-01 7:53 ` Sandeep Maheswaram [this message]
2021-11-01 18:59 ` [PATCH v9 1/5] usb: host: xhci: plat: Add suspend quirk for dwc3 controller Matthias Kaehlcke
2021-11-01 20:50 ` Bjorn Andersson
2021-11-01 21:05 ` Matthias Kaehlcke
2021-11-01 7:53 ` [PATCH v9 2/5] usb: dwc3: core: Host wake up support from system suspend Sandeep Maheswaram
2021-11-17 0:28 ` Brian Norris
2021-11-17 1:14 ` Matthias Kaehlcke
2021-11-17 3:09 ` Brian Norris
2021-11-17 6:01 ` Pavan Kondeti
2021-11-01 7:53 ` [PATCH v9 3/5] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Sandeep Maheswaram
2021-11-01 16:18 ` Matthias Kaehlcke
2021-11-01 16:39 ` Bjorn Andersson
2021-11-01 7:53 ` [PATCH v9 4/5] usb: dwc3: qcom: Change the IRQ flag for DP/DM hs phy irq Sandeep Maheswaram
2021-11-01 16:31 ` Bjorn Andersson
2021-11-18 11:45 ` Sandeep Maheswaram
2021-11-01 7:53 ` [PATCH v9 5/5] usb: dwc3: qcom: Keep power domain on to support wakeup Sandeep Maheswaram
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