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authorHans de Goede <j.w.r.degoede@hhs.nl>2006-08-28 14:42:24 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-28 15:31:14 -0700
commit360b9ab220aedaf346380fc2344729d9acc3b075 (patch)
treead843d0f33fe396c6d0ae22e93b151a5386de40c /drivers/hwmon/abituguru.c
parentb17ebc9402040959690b5a2c4e1cfb1e6d4fb206 (diff)
downloadop-kernel-dev-360b9ab220aedaf346380fc2344729d9acc3b075.zip
op-kernel-dev-360b9ab220aedaf346380fc2344729d9acc3b075.tar.gz
abituguru: Add suspend/resume support
This patch contains rudimentary suspend / resume support for the uguru, this protects the uguru and the driver against suspend / resume cycles, so there is no reason to unload the driver in your suspend / resume scripts. Only include suspend / resume functions when CONFIG_PM is set. Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/hwmon/abituguru.c')
-rw-r--r--drivers/hwmon/abituguru.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
index 35ad1b0..e5cb0fd 100644
--- a/drivers/hwmon/abituguru.c
+++ b/drivers/hwmon/abituguru.c
@@ -1354,13 +1354,39 @@ LEAVE_UPDATE:
return NULL;
}
+#ifdef CONFIG_PM
+static int abituguru_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct abituguru_data *data = platform_get_drvdata(pdev);
+ /* make sure all communications with the uguru are done and no new
+ ones are started */
+ mutex_lock(&data->update_lock);
+ return 0;
+}
+
+static int abituguru_resume(struct platform_device *pdev)
+{
+ struct abituguru_data *data = platform_get_drvdata(pdev);
+ /* See if the uGuru is still ready */
+ if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT)
+ data->uguru_ready = 0;
+ mutex_unlock(&data->update_lock);
+ return 0;
+}
+#else
+#define abituguru_suspend NULL
+#define abituguru_resume NULL
+#endif /* CONFIG_PM */
+
static struct platform_driver abituguru_driver = {
.driver = {
.owner = THIS_MODULE,
.name = ABIT_UGURU_NAME,
},
- .probe = abituguru_probe,
- .remove = __devexit_p(abituguru_remove),
+ .probe = abituguru_probe,
+ .remove = __devexit_p(abituguru_remove),
+ .suspend = abituguru_suspend,
+ .resume = abituguru_resume,
};
static int __init abituguru_detect(void)
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