input: sh_keysc: use enable/disable_irq_wake()

Modify the sh_keysc driver to use enable/disable_irq_wake()
during suspend and resume. These functions are used to enable
the sh_keysc interrupt in the interrupt controller so the
keypad can be used to wakeup the system from suspend.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c
index e1480fb11de3..cea70e6a1031 100644
--- a/drivers/input/keyboard/sh_keysc.c
+++ b/drivers/input/keyboard/sh_keysc.c
@@ -259,12 +259,15 @@ static int sh_keysc_suspend(struct device *dev)
 {
         struct platform_device *pdev = to_platform_device(dev);
         struct sh_keysc_priv *priv = platform_get_drvdata(pdev);
+        int irq = platform_get_irq(pdev, 0);
         unsigned short value;
 
         value = ioread16(priv->iomem_base + KYCR1_OFFS);
 
-        if (device_may_wakeup(dev))
+        if (device_may_wakeup(dev)) {
                 value |= 0x80;
+                enable_irq_wake(irq);
+        }
         else
                 value &= ~0x80;
 
@@ -272,8 +275,20 @@ static int sh_keysc_suspend(struct device *dev)
         return 0;
 }
 
+static int sh_keysc_resume(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        int irq = platform_get_irq(pdev, 0);
+
+        if (device_may_wakeup(dev))
+                disable_irq_wake(irq);
+
+        return 0;
+}
+
 static struct dev_pm_ops sh_keysc_dev_pm_ops = {
         .suspend = sh_keysc_suspend,
+        .resume = sh_keysc_resume,
 };
 
 struct platform_driver sh_keysc_device_driver = {