pda_power: add suspend/resume support

Add suspend/resume/wakeup support for pda_power.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Anton Vorontsov <cbou@mail.ru>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index d98622f9f31d..35dc25973f33 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -207,6 +207,8 @@ static int pda_power_probe(struct platform_device *pdev)
                 }
         }
 
+        device_init_wakeup(&pdev->dev, 1);
+
         return 0;
 
 usb_irq_failed:
@@ -239,12 +241,43 @@ static int pda_power_remove(struct platform_device *pdev)
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int pda_power_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        if (device_may_wakeup(&pdev->dev)) {
+                if (ac_irq)
+                        enable_irq_wake(ac_irq->start);
+                if (usb_irq)
+                        enable_irq_wake(usb_irq->start);
+        }
+
+        return 0;
+}
+
+static int pda_power_resume(struct platform_device *pdev)
+{
+        if (device_may_wakeup(&pdev->dev)) {
+                if (usb_irq)
+                        disable_irq_wake(usb_irq->start);
+                if (ac_irq)
+                        disable_irq_wake(ac_irq->start);
+        }
+
+        return 0;
+}
+#else
+#define pda_power_suspend NULL
+#define pda_power_resume NULL
+#endif /* CONFIG_PM */
+
 static struct platform_driver pda_power_pdrv = {
         .driver = {
                 .name = "pda-power",
         },
         .probe = pda_power_probe,
         .remove = pda_power_remove,
+        .suspend = pda_power_suspend,
+        .resume = pda_power_resume,
 };
 
 static int __init pda_power_init(void)