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USB: full power management support for the idmouse driver

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usb: full runtime PM support for idmouse driver

- add suspend/resume support
- add reset_resume support
- add support for autosuspend

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Tested-by: Andreas Deresch <aderesch@fs.tum.de>
This commit is contained in:
Oliver Neukum 2009-07-12 23:58:23 +02:00 committed by Greg Kroah-Hartman
parent b7800218bc
commit d9bfbd167b
1 changed files with 21 additions and 0 deletions
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21
drivers/usb/misc/idmouse.c
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@ -96,6 +96,8 @@ static int idmouse_probe(struct usb_interface *interface,
const struct usb_device_id *id);
static void idmouse_disconnect(struct usb_interface *interface);
static int idmouse_suspend(struct usb_interface *intf, pm_message_t message);
static int idmouse_resume(struct usb_interface *intf);
/* file operation pointers */
static const struct file_operations idmouse_fops = {
@ -117,7 +119,11 @@ static struct usb_driver idmouse_driver = {
.name = DRIVER_SHORT,
.probe = idmouse_probe,
.disconnect = idmouse_disconnect,
.suspend = idmouse_suspend,
.resume = idmouse_resume,
.reset_resume = idmouse_resume,
.id_table = idmouse_table,
.supports_autosuspend = 1,
};
static int idmouse_create_image(struct usb_idmouse *dev)
@ -197,6 +203,17 @@ static int idmouse_create_image(struct usb_idmouse *dev)
return result;
}
/* PM operations are nops as this driver does IO only during open() */
static int idmouse_suspend(struct usb_interface *intf, pm_message_t message)
{
return 0;
}
static int idmouse_resume(struct usb_interface *intf)
{
return 0;
}
static inline void idmouse_delete(struct usb_idmouse *dev)
{
kfree(dev->bulk_in_buffer);
@ -235,9 +252,13 @@ static int idmouse_open(struct inode *inode, struct file *file)
} else {
/* create a new image and check for success */
result = usb_autopm_get_interface(interface);
if (result)
goto error;
result = idmouse_create_image (dev);
if (result)
goto error;
usb_autopm_put_interface(interface);
/* increment our usage count for the driver */
++dev->open;