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olpc_battery: Add wakeup support 

Battery and AC events can now be used to wake up the system from suspend.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
hifive-unleashed-5.1
Daniel Drake 2011-08-10 21:46:02 +01:00 committed by Anton Vorontsov
parent c3503fd025
commit cae659af87
1 changed files with 24 additions and 0 deletions
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24
drivers/power/olpc_battery.c
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@ -533,6 +533,24 @@ void olpc_battery_trigger_uevent(unsigned long cause)
kobject_uevent(&olpc_bat.dev->kobj, KOBJ_CHANGE);
}
static int olpc_battery_suspend(struct platform_device *pdev,
pm_message_t state)
{
if (device_may_wakeup(olpc_ac.dev))
olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR);
else
olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR);
if (device_may_wakeup(olpc_bat.dev))
olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
| EC_SCI_SRC_BATERR);
else
olpc_ec_wakeup_clear(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
| EC_SCI_SRC_BATERR);
return 0;
}
static int __devinit olpc_battery_probe(struct platform_device *pdev)
{
int ret;
@ -578,6 +596,11 @@ static int __devinit olpc_battery_probe(struct platform_device *pdev)
if (ret)
goto error_failed;
if (olpc_ec_wakeup_available()) {
device_set_wakeup_capable(olpc_ac.dev, true);
device_set_wakeup_capable(olpc_bat.dev, true);
}
return 0;
error_failed:
@ -612,6 +635,7 @@ static struct platform_driver olpc_battery_drv = {
},
.probe = olpc_battery_probe,
.remove = __devexit_p(olpc_battery_remove),
.suspend = olpc_battery_suspend,
};
static int __init olpc_bat_init(void)