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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2015-01-15 05:00:38 +0300
committerSebastian Reichel <sre@kernel.org>2015-01-20 13:58:32 +0100
commitf1300e7f6211139da9bc1ebf685f244fbd0ee58d (patch)
treec60ddd538394be34a633d11a2605a167167db942 /drivers/power
parentfaeed51bb65ce0241052d8dc24ac331ade12e976 (diff)
downloadlinux-f1300e7f6211139da9bc1ebf685f244fbd0ee58d.tar.bz2
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>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/collie_battery.c24
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
index d02ae02a7590..594e4dbc2d51 100644
--- a/drivers/power/collie_battery.c
+++ b/drivers/power/collie_battery.c
@@ -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) {
- schedule_work(&bat_work);
- return 0;
- }
+ 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);