Staging: asus_oled: Add suspend/resume callbacks
- Add simple suspend/resume PM callbacks to disable oled display on
suspend and return to previous state on resume
Signed-off-by: Jonathan Brett <jonbrett.dev@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/asus_oled/asus_oled.c b/drivers/staging/asus_oled/asus_oled.c
index 42a5e7a..0018547 100644
--- a/drivers/staging/asus_oled/asus_oled.c
+++ b/drivers/staging/asus_oled/asus_oled.c
@@ -137,6 +137,7 @@
size_t buf_size;
char *buf;
uint8_t enabled;
+ uint8_t enabled_post_resume;
struct device *dev;
};
@@ -765,11 +766,45 @@
dev_info(&interface->dev, "Disconnected Asus OLED device\n");
}
+#ifdef CONFIG_PM
+static int asus_oled_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct asus_oled_dev *odev;
+
+ odev = usb_get_intfdata(intf);
+ if (!odev)
+ return -ENODEV;
+
+ odev->enabled_post_resume = odev->enabled;
+ enable_oled(odev, 0);
+
+ return 0;
+}
+
+static int asus_oled_resume(struct usb_interface *intf)
+{
+ struct asus_oled_dev *odev;
+
+ odev = usb_get_intfdata(intf);
+ if (!odev)
+ return -ENODEV;
+
+ enable_oled(odev, odev->enabled_post_resume);
+
+ return 0;
+}
+#else
+#define asus_oled_suspend NULL
+#define asus_oled_resume NULL
+#endif
+
static struct usb_driver oled_driver = {
.name = ASUS_OLED_NAME,
.probe = asus_oled_probe,
.disconnect = asus_oled_disconnect,
.id_table = id_table,
+ .suspend = asus_oled_suspend,
+ .resume = asus_oled_resume,
};
static CLASS_ATTR_STRING(version, S_IRUGO,