| Message ID | 1635753224-23975-5-git-send-email-quic_c_sanm@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | USB DWC3 host wake up support from system suspend | expand |
On Mon 01 Nov 00:53 PDT 2021, Sandeep Maheswaram wrote: > Change the IRQ flags for DP/DM hs phy irq to avoid interrupt > triggering during system suspend. > Why does replacing HIGH with RISING change this behavior, or do you get a RISING interrupt just before hitting suspend which you ignore? I think it would be nice to have the commit message for this (or per below request the DTS change) include some details about what's really happening on the irq line. > Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> > --- > drivers/usb/dwc3/dwc3-qcom.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c > index 54461f1..356f4f8 100644 > --- a/drivers/usb/dwc3/dwc3-qcom.c > +++ b/drivers/usb/dwc3/dwc3-qcom.c > @@ -473,7 +473,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) > irq_set_status_flags(irq, IRQ_NOAUTOEN); > ret = devm_request_threaded_irq(qcom->dev, irq, NULL, > qcom_dwc3_resume_irq, > - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, > + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, IRQF_TRIGGER_* should be omitted from the driver and supplied by the DT. The dtbs out there should all have IRQ_TYPE_LEVEL_HIGH at this time, so simply dropping that from this list and updating the dts would be the right thing to do. Regards, Bjorn > "qcom_dwc3 DP_HS", qcom); > if (ret) { > dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret); > @@ -488,7 +488,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) > irq_set_status_flags(irq, IRQ_NOAUTOEN); > ret = devm_request_threaded_irq(qcom->dev, irq, NULL, > qcom_dwc3_resume_irq, > - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, > + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, > "qcom_dwc3 DM_HS", qcom); > if (ret) { > dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret); > -- > 2.7.4 >
On 11/1/2021 10:01 PM, Bjorn Andersson wrote: > On Mon 01 Nov 00:53 PDT 2021, Sandeep Maheswaram wrote: > >> Change the IRQ flags for DP/DM hs phy irq to avoid interrupt >> triggering during system suspend. >> > Why does replacing HIGH with RISING change this behavior, or do you get > a RISING interrupt just before hitting suspend which you ignore? > > I think it would be nice to have the commit message for this (or per > below request the DTS change) include some details about what's really > happening on the irq line. When we use IRQF_TRIGGER_HIGH we get interrupt during PM suspend and causes resume. [ 119.743083] Resume caused by IRQ 101, qcom_dwc3 DP_HS >> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> >> --- >> drivers/usb/dwc3/dwc3-qcom.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c >> index 54461f1..356f4f8 100644 >> --- a/drivers/usb/dwc3/dwc3-qcom.c >> +++ b/drivers/usb/dwc3/dwc3-qcom.c >> @@ -473,7 +473,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) >> irq_set_status_flags(irq, IRQ_NOAUTOEN); >> ret = devm_request_threaded_irq(qcom->dev, irq, NULL, >> qcom_dwc3_resume_irq, >> - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, >> + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, > IRQF_TRIGGER_* should be omitted from the driver and supplied by the DT. > > The dtbs out there should all have IRQ_TYPE_LEVEL_HIGH at this time, so > simply dropping that from this list and updating the dts would be the > right thing to do. > > Regards, > Bjorn Ok. Dropping IRQF_TRIGGER_* solved the resume issue during PM suspend. >> "qcom_dwc3 DP_HS", qcom); >> if (ret) { >> dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret); >> @@ -488,7 +488,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) >> irq_set_status_flags(irq, IRQ_NOAUTOEN); >> ret = devm_request_threaded_irq(qcom->dev, irq, NULL, >> qcom_dwc3_resume_irq, >> - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, >> + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, >> "qcom_dwc3 DM_HS", qcom); >> if (ret) { >> dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret); >> -- >> 2.7.4 >>
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 54461f1..356f4f8 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -473,7 +473,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "qcom_dwc3 DP_HS", qcom); if (ret) { dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret); @@ -488,7 +488,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "qcom_dwc3 DM_HS", qcom); if (ret) { dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret);
Change the IRQ flags for DP/DM hs phy irq to avoid interrupt triggering during system suspend. Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> --- drivers/usb/dwc3/dwc3-qcom.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)