From: Krishna Kurapati <quic_kriskura@quicinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>, 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: <devicetree@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-pm@vger.kernel.org>, <quic_pkondeti@quicinc.com>,
<quic_ppratap@quicinc.com>, <quic_vpulyala@quicinc.com>,
Sandeep Maheswaram <quic_c_sanm@quicinc.com>,
Krishna Kurapati <quic_kriskura@quicinc.com>
Subject: [v15 6/6] usb: dwc3: qcom: Keep power domain on to retain controller status
Date: Thu, 5 May 2022 14:26:13 +0530 [thread overview]
Message-ID: <1651740973-7944-7-git-send-email-quic_kriskura@quicinc.com> (raw)
In-Reply-To: <1651740973-7944-1-git-send-email-quic_kriskura@quicinc.com>
From: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Keep the power domain always on during runtime suspend or if the
controller supports wakeup in order to retain controller status
and to support wakeup from devices.
Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
---
drivers/usb/dwc3/dwc3-qcom.c | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 9804a19..1f9589a 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>
@@ -718,12 +719,13 @@ dwc3_qcom_create_urs_usb_platdev(struct device *dev)
static int dwc3_qcom_probe(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.of_node;
- struct device *dev = &pdev->dev;
- struct dwc3_qcom *qcom;
- struct resource *res, *parent_res = NULL;
- int ret, i;
- bool ignore_pipe_clk;
+ struct device_node *np = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ struct dwc3_qcom *qcom;
+ struct resource *res, *parent_res = NULL;
+ int ret, i;
+ bool ignore_pipe_clk;
+ struct generic_pm_domain *genpd;
qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL);
if (!qcom)
@@ -732,6 +734,8 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, qcom);
qcom->dev = &pdev->dev;
+ genpd = pd_to_genpd(qcom->dev->pm_domain);
+
if (has_acpi_companion(dev)) {
qcom->acpi_pdata = acpi_device_get_match_data(dev);
if (!qcom->acpi_pdata) {
@@ -839,7 +843,12 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
if (ret)
goto interconnect_exit;
- device_init_wakeup(&pdev->dev, 1);
+ genpd->flags |= GENPD_FLAG_RPM_ALWAYS_ON;
+
+ if (device_may_wakeup(&qcom->dwc3->dev)) {
+ genpd->flags |= GENPD_FLAG_ALWAYS_ON;
+ device_init_wakeup(&pdev->dev, true);
+ }
qcom->is_suspended = false;
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
--
2.7.4
prev parent reply other threads:[~2022-05-05 8:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-05 8:56 [v15 0/6] USB DWC3 host wake up support from system suspend Krishna Kurapati
2022-05-05 8:56 ` [v15 1/6] dt-bindings: usb: dwc3: Add wakeup-source property support Krishna Kurapati
2022-05-05 8:56 ` [v15 2/6] usb: host: xhci-plat: Enable wakeup based on children wakeup status Krishna Kurapati
2022-05-06 15:36 ` Matthias Kaehlcke
2022-05-09 3:38 ` Pavan Kondeti
2022-05-11 1:51 ` Pavan Kondeti
2022-05-11 15:54 ` Matthias Kaehlcke
2022-05-11 23:54 ` Pavan Kondeti
2022-05-05 8:56 ` [v15 3/6] usb: dwc3: core: Host wake up support from system suspend Krishna Kurapati
2022-05-05 22:48 ` Matthias Kaehlcke
2022-05-06 5:11 ` Krishna Kurapati PSSNV
2022-05-06 5:14 ` Pavan Kondeti
2022-05-06 15:51 ` Matthias Kaehlcke
2022-05-06 16:51 ` Matthias Kaehlcke
2022-05-05 8:56 ` [v15 4/6] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Krishna Kurapati
2022-05-05 8:56 ` [v15 5/6] usb: dwc3: qcom: Configure wakeup interrupts during suspend Krishna Kurapati
2022-05-05 8:56 ` Krishna Kurapati [this message]
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