power: collie_battery: support generating wakeup event
Teach collie_battery driver to communicate to the kernel that it can generate wakeup events. Handle enabling/disabling wakeup on battery full event in suspend/resume callbacks. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
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@ -26,6 +26,7 @@
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static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
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static struct work_struct bat_work;
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static struct ucb1x00 *ucb;
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static int wakeup_enabled;
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struct collie_bat {
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int status;
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@ -291,11 +292,21 @@ static int collie_bat_suspend(struct ucb1x00_dev *dev)
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{
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/* flush all pending status updates */
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flush_work(&bat_work);
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if (device_may_wakeup(&dev->ucb->dev) &&
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collie_bat_main.status == POWER_SUPPLY_STATUS_CHARGING)
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wakeup_enabled = !enable_irq_wake(gpio_to_irq(COLLIE_GPIO_CO));
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else
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wakeup_enabled = 0;
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return 0;
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}
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static int collie_bat_resume(struct ucb1x00_dev *dev)
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{
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if (wakeup_enabled)
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disable_irq_wake(gpio_to_irq(COLLIE_GPIO_CO));
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/* things may have changed while we were away */
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schedule_work(&bat_work);
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return 0;
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@ -334,10 +345,15 @@ static int collie_bat_probe(struct ucb1x00_dev *dev)
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collie_bat_gpio_isr,
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"main full", &collie_bat_main);
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if (!ret) {
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schedule_work(&bat_work);
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return 0;
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}
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if (ret)
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goto err_irq;
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device_init_wakeup(&ucb->dev, 1);
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schedule_work(&bat_work);
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return 0;
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err_irq:
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power_supply_unregister(&collie_bat_bu.psy);
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err_psy_reg_bu:
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power_supply_unregister(&collie_bat_main.psy);
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