From: David Brownell Date: Fri, 20 Jun 2008 00:52:58 +0000 (-0700) Subject: usb gadget: composite gadget core X-Git-Tag: v2.6.27-rc1~946^2~72 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40982be52d8f64c3e10adce17e66ab755a4fa26b;p=pandora-kernel.git usb gadget: composite gadget core Add interfaces for composite gadget drivers, and basic implementation support behind it: - struct usb_function ... groups one or more interfaces into a function managed as one unit within a configuration, to which it's added by usb_add_function(). - struct usb_configuration ... groups one or more such functions into a configuration managed as one unit by a driver, to which it's added by usb_add_config(). These operate at either high or full/low speeds and at a given bMaxPower. - struct usb_composite_driver ... groups one or more such configurations into a gadget driver, which may be registered or unregistered. - struct usb_composite_dev ... a usb_composite_driver manages this; it wraps the usb_gadget exposed by the controller driver. This also includes some basic kerneldoc. How to use it (the short version): provide a usb_composite_driver with a bind() that calls usb_add_config() for each of the needed configurations. The configurations in turn have bind() calls, which will usb_add_function() for each function required. Each function's bind() allocates resources needed to perform its tasks, like endpoints; sometimes configurations will allocate resources too. Separate patches will convert most gadget drivers to this infrastructure. Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed