From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Brett Date: Fri, 17 Aug 2012 20:13:18 +0000 Subject: [PATCH] Staging: asus_oled: Add suspend/resume callbacks Message-Id: <1345234398-4675-1-git-send-email-jonbrett.dev@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kernel-janitors@vger.kernel.org - Add simple suspend/resume PM callbacks to disable oled display on suspend and return to previous state on resume Signed-off-by: Jonathan Brett --- drivers/staging/asus_oled/asus_oled.c | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) 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 @@ 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, -- 1.7.9.5