From: Marc Dietrich <marvin24@xxxxxx>
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@xxxxxx>
Signed-off-by: Julian Andres Klode <jak@xxxxxxxxxxxxx>
---
drivers/staging/nvec/nvec_ps2.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/nvec/nvec_ps2.c b/drivers/staging/nvec/nvec_ps2.c
index 742f5cc..4410dfb 100644
--- a/drivers/staging/nvec/nvec_ps2.c
+++ b/drivers/staging/nvec/nvec_ps2.c
@@ -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,
--
1.7.7.3
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