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staging: nvec: ps2: add suspend/resume functions 

This adds suspend and resume functions to the nvec_ps2 mouse driver.

During suspend the nvec sends a "Cancel all mouse events" command. If
this is missed, there will be still some bytes in the received buffer
after resume which make the mouse go out of sync.

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Julian Andres Klode <jak@jak-linux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marc Dietrich 2011-12-26 17:57:32 +01:00 committed by Greg Kroah-Hartman
parent 5f356a67ae
commit d1b5342c1f
1 changed files with 19 additions and 0 deletions
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19
drivers/staging/nvec/nvec_ps2.c
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@ -111,8 +111,27 @@ static int __devinit nvec_mouse_probe(struct platform_device *pdev)
return 0;
}
static int nvec_mouse_suspend(struct platform_device *pdev, pm_message_t state)
{
struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);
/* send cancel autoreceive */
nvec_write_async(nvec, "\x06\x04", 2);
return 0;
}
static int nvec_mouse_resume(struct platform_device *pdev)
{
ps2_startstreaming(ps2_dev.ser_dev);
return 0;
}
static struct platform_driver nvec_mouse_driver = {
.probe = nvec_mouse_probe,
.suspend = nvec_mouse_suspend,
.resume = nvec_mouse_resume,
.driver = {
.name = "nvec-mouse",
.owner = THIS_MODULE,