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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-03-19 14:14:17 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-24 16:20:45 -0700
commit8942939a6c83f34615de5ae041cc9ca846923f94 (patch)
tree4d3715a1f4ddca640ed60efb5fffabfcc785538e /include/linux/usb
parente1e609be49c9d345e8b67a122a7cdae48ad27c7e (diff)
downloadop-kernel-dev-8942939a6c83f34615de5ae041cc9ca846923f94.zip
op-kernel-dev-8942939a6c83f34615de5ae041cc9ca846923f94.tar.gz
USB: gadget: composite device-level suspend/resume hooks
Address one open question in the composite gadget framework: Yes, we should have device-level suspend/resume callbacks in addition to the function-level ones. We have at least one scenario (with gadget zero in OTG test mode) that's awkward to handle without it. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb')
-rw-r--r--include/linux/usb/composite.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 935c380..acd7b0f 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -244,6 +244,10 @@ int usb_add_config(struct usb_composite_dev *,
* value; it should return zero on successful initialization.
* @unbind: Reverses @bind(); called as a side effect of unregistering
* this driver.
+ * @suspend: Notifies when the host stops sending USB traffic,
+ * after function notifications
+ * @resume: Notifies configuration when the host restarts USB traffic,
+ * before function notifications
*
* Devices default to reporting self powered operation. Devices which rely
* on bus powered operation should report this in their @bind() method.
@@ -268,6 +272,10 @@ struct usb_composite_driver {
int (*bind)(struct usb_composite_dev *);
int (*unbind)(struct usb_composite_dev *);
+
+ /* global suspend hooks */
+ void (*suspend)(struct usb_composite_dev *);
+ void (*resume)(struct usb_composite_dev *);
};
extern int usb_composite_register(struct usb_composite_driver *);
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