| Message ID | 1653634146-12215-1-git-send-email-quic_prashk@quicinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: common: usb-conn-gpio: Allow wakeup from system suspend | expand |
On Fri, May 27, 2022 at 12:19:06PM +0530, Prashanth K wrote: > Currently the VBUS/ID detection interrupts are disabled during system > suspend. So the USB cable connect/disconnect event can't wakeup the > system from low power mode. To allow this, we keep these interrupts > enabled and configure them as wakeup capable. This behavior can be > controlled through device wakeup source policy by the user space. > > Signed-off-by: Prashanth K <quic_prashk@quicinc.com> > --- > drivers/usb/common/usb-conn-gpio.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c > index 395f9bb..b39c9f1c 100644 > --- a/drivers/usb/common/usb-conn-gpio.c > +++ b/drivers/usb/common/usb-conn-gpio.c > @@ -257,6 +257,7 @@ static int usb_conn_probe(struct platform_device *pdev) > } > > platform_set_drvdata(pdev, info); > + device_set_wakeup_capable(&pdev->dev, true); > > /* Perform initial detection */ > usb_conn_queue_dwork(info, 0); > @@ -286,6 +287,14 @@ static int __maybe_unused usb_conn_suspend(struct device *dev) > { > struct usb_conn_info *info = dev_get_drvdata(dev); > > + if (device_may_wakeup(dev)) { > + if (info->id_gpiod) > + enable_irq_wake(info->id_irq); > + if (info->vbus_gpiod) > + enable_irq_wake(info->vbus_irq); > + return 0; > + } > + > if (info->id_gpiod) > disable_irq(info->id_irq); > if (info->vbus_gpiod) > @@ -300,6 +309,14 @@ static int __maybe_unused usb_conn_resume(struct device *dev) > { > struct usb_conn_info *info = dev_get_drvdata(dev); > > + if (device_may_wakeup(dev)) { > + if (info->id_gpiod) > + disable_irq_wake(info->id_irq); > + if (info->vbus_gpiod) > + disable_irq_wake(info->vbus_irq); > + return 0; > + } > + > pinctrl_pm_select_default_state(dev); > > if (info->id_gpiod) Looks good to me. Thanks, Pavan
diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c index 395f9bb..b39c9f1c 100644 --- a/drivers/usb/common/usb-conn-gpio.c +++ b/drivers/usb/common/usb-conn-gpio.c @@ -257,6 +257,7 @@ static int usb_conn_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, info); + device_set_wakeup_capable(&pdev->dev, true); /* Perform initial detection */ usb_conn_queue_dwork(info, 0); @@ -286,6 +287,14 @@ static int __maybe_unused usb_conn_suspend(struct device *dev) { struct usb_conn_info *info = dev_get_drvdata(dev); + if (device_may_wakeup(dev)) { + if (info->id_gpiod) + enable_irq_wake(info->id_irq); + if (info->vbus_gpiod) + enable_irq_wake(info->vbus_irq); + return 0; + } + if (info->id_gpiod) disable_irq(info->id_irq); if (info->vbus_gpiod) @@ -300,6 +309,14 @@ static int __maybe_unused usb_conn_resume(struct device *dev) { struct usb_conn_info *info = dev_get_drvdata(dev); + if (device_may_wakeup(dev)) { + if (info->id_gpiod) + disable_irq_wake(info->id_irq); + if (info->vbus_gpiod) + disable_irq_wake(info->vbus_irq); + return 0; + } + pinctrl_pm_select_default_state(dev); if (info->id_gpiod)
Currently the VBUS/ID detection interrupts are disabled during system suspend. So the USB cable connect/disconnect event can't wakeup the system from low power mode. To allow this, we keep these interrupts enabled and configure them as wakeup capable. This behavior can be controlled through device wakeup source policy by the user space. Signed-off-by: Prashanth K <quic_prashk@quicinc.com> --- drivers/usb/common/usb-conn-gpio.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)