From: Prashanth K Date: Fri, 27 May 2022 06:49:06 +0000 (+0530) Subject: usb: common: usb-conn-gpio: Allow wakeup from system suspend X-Git-Tag: v6.6.17~6909^2~174 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7afe69ad9221a77dc782b81f49cd7f99987740ed;p=platform%2Fkernel%2Flinux-rpi.git usb: common: usb-conn-gpio: Allow wakeup from system suspend 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 Link: https://lore.kernel.org/r/1653634146-12215-1-git-send-email-quic_prashk@quicinc.com Signed-off-by: Greg Kroah-Hartman --- 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)