diff options
| author | Jonathan Brett <jonbrett.dev@gmail.com> | 2012-08-17 21:13:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-04 13:12:13 -0700 |
| commit | 0e4da5cbaefa02ed408f8a78d759baef2905bf34 (patch) | |
| tree | 9ef9ce185371f1d27a7a0bc64d0e88504e186863 /drivers/staging/asus_oled | |
| parent | 411c076a2e8faad165f3504f4bad89cdfa5989cc (diff) | |
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>
Diffstat (limited to 'drivers/staging/asus_oled')
| -rw-r--r-- | drivers/staging/asus_oled/asus_oled.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/staging/asus_oled/asus_oled.c b/drivers/staging/asus_oled/asus_oled.c index 42a5e7ab512..00185478647 100644 --- a/drivers/staging/asus_oled/asus_oled.c +++ b/drivers/staging/asus_oled/asus_oled.c @@ -137,6 +137,7 @@ struct asus_oled_dev { size_t buf_size; char *buf; uint8_t enabled; + uint8_t enabled_post_resume; struct device *dev; }; @@ -765,11 +766,45 @@ static void asus_oled_disconnect(struct usb_interface *interface) 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, |