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>
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 9972268..46a2f07 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -533,6 +533,24 @@
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 @@
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 @@
},
.probe = olpc_battery_probe,
.remove = __devexit_p(olpc_battery_remove),
+ .suspend = olpc_battery_suspend,
};
static int __init olpc_bat_init(void)