From: Hans de Goede hdegoede@redhat.com
commit 9c94553099efb2ba873cbdddfd416a8a09d0e5f1 upstream.
On devices with an AXP288, we need to wakeup from suspend when a charger is plugged in, so that we can do charger-type detection and so that the axp288-charger driver, which listens for our extcon events, can configure the input-current-limit accordingly.
Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Chanwoo Choi cw00.choi@samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/extcon/extcon-axp288.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c index a983708..363b403 100644 --- a/drivers/extcon/extcon-axp288.c +++ b/drivers/extcon/extcon-axp288.c @@ -428,9 +428,40 @@ static int axp288_extcon_probe(struct platform_device *pdev) /* Start charger cable type detection */ axp288_extcon_enable(info);
+ device_init_wakeup(dev, true); + platform_set_drvdata(pdev, info); + + return 0; +} + +static int __maybe_unused axp288_extcon_suspend(struct device *dev) +{ + struct axp288_extcon_info *info = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(info->irq[VBUS_RISING_IRQ]); + return 0; }
+static int __maybe_unused axp288_extcon_resume(struct device *dev) +{ + struct axp288_extcon_info *info = dev_get_drvdata(dev); + + /* + * Wakeup when a charger is connected to do charger-type + * connection and generate an extcon event which makes the + * axp288 charger driver set the input current limit. + */ + if (device_may_wakeup(dev)) + disable_irq_wake(info->irq[VBUS_RISING_IRQ]); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(axp288_extcon_pm_ops, axp288_extcon_suspend, + axp288_extcon_resume); + static const struct platform_device_id axp288_extcon_table[] = { { .name = "axp288_extcon" }, {}, @@ -442,6 +473,7 @@ static int axp288_extcon_probe(struct platform_device *pdev) .id_table = axp288_extcon_table, .driver = { .name = "axp288_extcon", + .pm = &axp288_extcon_pm_ops, }, };