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pm2301-charger: Wake system when ext charger is plugged-in

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When in suspend state, upon plug-in of external AC charger the
device needs to wake-up and charging operation started.

Signed-off-by: Rupesh Kumar <rupesh.kumar@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
This commit is contained in:
Rupesh Kumar 2012-06-28 18:31:19 +05:30 committed by Lee Jones
parent da9e83d496
commit d4f510f6c3
1 changed files with 16 additions and 1 deletions
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17
drivers/power/pm2301_charger.c
View file

@ -1072,6 +1072,12 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
pm2xxx_charger_irq[0].name, pm2->pdata->irq_number, ret);
goto unregister_pm2xxx_charger;
}
/* pm interrupt can wake up system */
ret = enable_irq_wake(pm2->pdata->irq_number);
if (ret) {
dev_err(pm2->dev, "failed to set irq wake\n");
goto unregister_pm2xxx_interrupt;
}
/*Initialize lock*/
mutex_init(&pm2->lock);
@ -1084,7 +1090,7 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio");
if (ret < 0) {
dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n");
goto unregister_pm2xxx_charger;
goto disable_pm2_irq_wake;
}
ret = gpio_direction_output(pm2->lpn_pin, 0);
if (ret < 0) {
@ -1115,6 +1121,11 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
free_gpio:
gpio_free(pm2->lpn_pin);
disable_pm2_irq_wake:
disable_irq_wake(pm2->pdata->irq_number);
unregister_pm2xxx_interrupt:
/* disable interrupt */
free_irq(pm2->pdata->irq_number, pm2);
unregister_pm2xxx_charger:
/* unregister power supply */
power_supply_unregister(&pm2->ac_chg.psy);
@ -1125,6 +1136,7 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
destroy_workqueue(pm2->charger_wq);
free_device_info:
kfree(pm2);
return ret;
}
@ -1135,6 +1147,9 @@ static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
/* Disable AC charging */
pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0);
/* Disable wake by pm interrupt */
disable_irq_wake(pm2->pdata->irq_number);
/* Disable interrupts */
free_irq(pm2->pdata->irq_number, pm2);