diff options
| -rw-r--r-- | drivers/usb/gadget/composite.c | 8 | ||||
| -rw-r--r-- | include/linux/usb/composite.h | 8 |
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 40f1da77a006..59e85234fa0a 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1014,7 +1014,7 @@ composite_suspend(struct usb_gadget *gadget) struct usb_composite_dev *cdev = get_gadget_data(gadget); struct usb_function *f; - /* REVISIT: should we have config and device level + /* REVISIT: should we have config level * suspend/resume callbacks? */ DBG(cdev, "suspend\n"); @@ -1024,6 +1024,8 @@ composite_suspend(struct usb_gadget *gadget) f->suspend(f); } } + if (composite->suspend) + composite->suspend(cdev); } static void @@ -1032,10 +1034,12 @@ composite_resume(struct usb_gadget *gadget) struct usb_composite_dev *cdev = get_gadget_data(gadget); struct usb_function *f; - /* REVISIT: should we have config and device level + /* REVISIT: should we have config level * suspend/resume callbacks? */ DBG(cdev, "resume\n"); + if (composite->resume) + composite->resume(cdev); if (cdev->config) { list_for_each_entry(f, &cdev->config->functions, list) { if (f->resume) diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 935c380ffe47..acd7b0f06c8a 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 *); |