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Commit f1300e7f authored by Dmitry Eremin-Solenikov's avatar Dmitry Eremin-Solenikov Committed by Sebastian Reichel
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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: default avatarDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent faeed51b

drivers/power/collie_battery.c

+20 −4
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
static DEFINE_MUTEX(bat_lock); /* protects gpio pins */

static struct work_struct bat_work;

static struct ucb1x00 *ucb;

static int wakeup_enabled;



struct collie_bat {

	int status;
@@ -291,11 +292,21 @@ static int collie_bat_suspend(struct ucb1x00_dev *dev) 
{

	/* flush all pending status updates */

	flush_work(&bat_work);



	if (device_may_wakeup(&dev->ucb->dev) &&

	    collie_bat_main.status == POWER_SUPPLY_STATUS_CHARGING)

		wakeup_enabled = !enable_irq_wake(gpio_to_irq(COLLIE_GPIO_CO));

	else

		wakeup_enabled = 0;



	return 0;

}



static int collie_bat_resume(struct ucb1x00_dev *dev)

{

	if (wakeup_enabled)

		disable_irq_wake(gpio_to_irq(COLLIE_GPIO_CO));



	/* things may have changed while we were away */

	schedule_work(&bat_work);

	return 0;
@@ -334,10 +345,15 @@ static int collie_bat_probe(struct ucb1x00_dev *dev) 
				collie_bat_gpio_isr,

				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,

				"main full", &collie_bat_main);

	if (!ret) {

	if (ret)

		goto err_irq;



	device_init_wakeup(&ucb->dev, 1);

	schedule_work(&bat_work);



	return 0;

	}



err_irq:

	power_supply_unregister(&collie_bat_bu.psy);

err_psy_reg_bu:

	power_supply_unregister(&collie_bat_main.psy);