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authorMagnus Damm <damm@igel.co.jp>2009-03-10 09:24:21 +0300
committerPaul Mundt <lethal@linux-sh.org>2009-03-10 09:28:07 +0300
commita29b99eccecefe5026713b226f66f117c8837ad5 (patch)
treea71b873f75e87516c54d8f848f1d66bbd2061485 /drivers/input
parent508407149a7f927c4b65a20e0a08a2a94dc769c6 (diff)
downloadlinux-a29b99eccecefe5026713b226f66f117c8837ad5.tar.xz
input: add suspend wakeup support to sh_keysc
This patch adds wakeup support to the sh_keysc driver. With this feature the ".../power/wakeup" file can be used to enable and disable if the device takes the system out of suspend. Default is enabled. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/sh_keysc.c29
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c
index 5c8a1bcf7ca7..bf92178644ab 100644
--- a/drivers/input/keyboard/sh_keysc.c
+++ b/drivers/input/keyboard/sh_keysc.c
@@ -219,6 +219,8 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev)
pdata->scan_timing, priv->iomem_base + KYCR1_OFFS);
iowrite16(0, priv->iomem_base + KYOUTDR_OFFS);
iowrite16(KYCR2_IRQ_LEVEL, priv->iomem_base + KYCR2_OFFS);
+
+ device_init_wakeup(&pdev->dev, 1);
return 0;
err5:
free_irq(irq, pdev);
@@ -253,17 +255,36 @@ static int __devexit sh_keysc_remove(struct platform_device *pdev)
return 0;
}
+static int sh_keysc_suspend(struct device *dev)
+{
+ struct platform_device *pdev;
+ struct sh_keysc_priv *priv;
+ unsigned short value;
+
+ pdev = container_of(dev, struct platform_device, dev);
+ priv = platform_get_drvdata(pdev);
+
+ value = ioread16(priv->iomem_base + KYCR1_OFFS);
-#define sh_keysc_suspend NULL
-#define sh_keysc_resume NULL
+ if (device_may_wakeup(dev))
+ value |= 0x80;
+ else
+ value &= ~0x80;
+
+ iowrite16(value, priv->iomem_base + KYCR1_OFFS);
+ return 0;
+}
+
+static struct dev_pm_ops sh_keysc_dev_pm_ops = {
+ .suspend = sh_keysc_suspend,
+};
struct platform_driver sh_keysc_device_driver = {
.probe = sh_keysc_probe,
.remove = __devexit_p(sh_keysc_remove),
- .suspend = sh_keysc_suspend,
- .resume = sh_keysc_resume,
.driver = {
.name = "sh_keysc",
+ .pm = &sh_keysc_dev_pm_ops,
}
};