mfd: Add ability to wake the system for 88pm860x

For 88pm860x pmic, it can wake the system from low power mode by irq,
its sub-devs like RTC and onkey can be enabled for this usage.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/input/misc/88pm860x_onkey.c b/drivers/input/misc/88pm860x_onkey.c
index f2e0cbc5ab64..f9ce1835e4d7 100644
--- a/drivers/input/misc/88pm860x_onkey.c
+++ b/drivers/input/misc/88pm860x_onkey.c
@@ -105,6 +105,8 @@ static int __devinit pm860x_onkey_probe(struct platform_device *pdev)
         }
 
         platform_set_drvdata(pdev, info);
+        device_init_wakeup(&pdev->dev, 1);
+
         return 0;
 
 out_irq:
@@ -129,10 +131,34 @@ static int __devexit pm860x_onkey_remove(struct platform_device *pdev)
         return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int pm860x_onkey_suspend(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+        if (device_may_wakeup(dev))
+                chip->wakeup_flag |= 1 << PM8607_IRQ_ONKEY;
+        return 0;
+}
+static int pm860x_onkey_resume(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+        if (device_may_wakeup(dev))
+                chip->wakeup_flag &= ~(1 << PM8607_IRQ_ONKEY);
+        return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(pm860x_onkey_pm_ops, pm860x_onkey_suspend, pm860x_onkey_resume);
+
 static struct platform_driver pm860x_onkey_driver = {
         .driver         = {
                 .name   = "88pm860x-onkey",
                 .owner  = THIS_MODULE,
+                .pm     = &pm860x_onkey_pm_ops,
         },
         .probe          = pm860x_onkey_probe,
         .remove         = __devexit_p(pm860x_onkey_remove),