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gpio-charger: Support wakeup events

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Add support for using gpio-charger IRQ as a wakeup event.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
This commit is contained in:
Dmitry Eremin-Solenikov
2013-12-11 02:47:16 +04:00
committed by Anton Vorontsov
parent 55e6470120
commit 4ea8126601
1 changed files with 18 additions and 1 deletions
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19
drivers/power/gpio-charger.c
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@@ -28,6 +28,7 @@
struct gpio_charger { struct gpio_charger {
const struct gpio_charger_platform_data *pdata; const struct gpio_charger_platform_data *pdata;
unsigned int irq; unsigned int irq;
bool wakeup_enabled;
struct power_supply charger; struct power_supply charger;
}; };
@@ -136,6 +137,8 @@ static int gpio_charger_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, gpio_charger); platform_set_drvdata(pdev, gpio_charger);
device_init_wakeup(&pdev->dev, 1);
return 0; return 0;
err_gpio_free: err_gpio_free:
@@ -159,18 +162,32 @@ static int gpio_charger_remove(struct platform_device *pdev)
} }
#ifdef CONFIG_PM_SLEEP #ifdef CONFIG_PM_SLEEP
static int gpio_charger_suspend(struct device *dev)
{
struct gpio_charger *gpio_charger = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
gpio_charger->wakeup_enabled =
enable_irq_wake(gpio_charger->irq);
return 0;
}
static int gpio_charger_resume(struct device *dev) static int gpio_charger_resume(struct device *dev)
{ {
struct platform_device *pdev = to_platform_device(dev); struct platform_device *pdev = to_platform_device(dev);
struct gpio_charger *gpio_charger = platform_get_drvdata(pdev); struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
if (gpio_charger->wakeup_enabled)
disable_irq_wake(gpio_charger->irq);
power_supply_changed(&gpio_charger->charger); power_supply_changed(&gpio_charger->charger);
return 0; return 0;
} }
#endif #endif
static SIMPLE_DEV_PM_OPS(gpio_charger_pm_ops, NULL, gpio_charger_resume); static SIMPLE_DEV_PM_OPS(gpio_charger_pm_ops,
gpio_charger_suspend, gpio_charger_resume);
static struct platform_driver gpio_charger_driver = { static struct platform_driver gpio_charger_driver = {
.probe = gpio_charger_probe, .probe = gpio_charger_probe,