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usb: gadget: factor out two helper functions from composite_bind()

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This patch factors out two helper functions from composite_bind()
that is composite_dev_prepare() and its counterpart
composite_dev_cleanup().

This will be used by the configfs which requries a slightly different
bind/setup code because part of its configurations (i.e. config
descripts, cdev, …) are setup in advance and VID/PID and so one should
not be overwritten. Also the setup of ep0 endpoint can be delayed until
the UDC is assigned.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2012-12-23 21:10:20 +01:00 • committed by Felipe Balbi
parent 4c49a5f0ef
commit a59233407a
2 changed files with 64 additions and 36 deletions
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8
include/linux/usb/composite.h
View file

@ -323,7 +323,15 @@ struct usb_composite_driver {
extern int usb_composite_probe(struct usb_composite_driver *driver);
extern void usb_composite_unregister(struct usb_composite_driver *driver);
extern void usb_composite_setup_continue(struct usb_composite_dev *cdev);
extern int composite_dev_prepare(struct usb_composite_driver *composite,
struct usb_composite_dev *cdev);
void composite_dev_cleanup(struct usb_composite_dev *cdev);
static inline struct usb_composite_driver *to_cdriver(
struct usb_gadget_driver *gdrv)
{
return container_of(gdrv, struct usb_composite_driver, gadget_driver);
}
/**
* struct usb_composite_device - represents one composite usb gadget