On Mon, Dec 19, 2011 at 02:06:17PM +0200, Felipe Balbi wrote:
> On Mon, Dec 19, 2011 at 01:04:44PM +0100, Sebastian Andrzej Siewior wrote:
> > * Felipe Balbi | 2011-12-19 13:04:05 [+0200]:
> >
> > >--- a/include/linux/usb/gadget.h
> > >+++ b/include/linux/usb/gadget.h
> > >@@ -478,6 +478,53 @@ struct usb_gadget_ops {
> > > int (*stop)(struct usb_gadget_driver *);
> > > };
> > >
> > >+enum usb_device_status {
> > >+ USB_STATUS_IDLE,
> > >+ USB_STATUS_CONNECTED,
> > >+ USB_STATUS_RESETTING,
> > >+
> > >+ USB_STATUS_DEFAULT,
> > >+ USB_STATUS_ADDRESSED,
> > >+ USB_STATUS_UNCONFIGURED,
> > >+ USB_STATUS_CONFIGURED,
> > >+
> > >+ USB_STATUS_SUSPENDING,
> > >+ USB_STATUS_SUSPENDED,
> > >+ USB_STATUS_RESUMING,
> > >+ USB_STATUS_RESUMED,
> > >+};
Please connect me if my understanding is wrong
USB_STATUS_IDLE, /* default state */
USB_STATUS_CONNECTED, /* when get vbus rising interrupt */
USB_STATUS_RESETTING, /* when receive BUS_RESET */
USB_STATUS_DEFAULT, /* ??? */
USB_STATUS_ADDRESSED, /* after receive SET_ADDRESS */
USB_STATUS_UNCONFIGURED, /* ??? */
USB_STATUS_CONFIGURED, /* after receive SET_CONFIGRUTION */
USB_STATUS_SUSPENDING, /* bus idle 3ms */
USB_STATUS_SUSPENDED,
USB_STATUS_RESUMING, /* after receive resuming signal */
USB_STATUS_RESUMED,
1. when the status will be used I have marked with /* ??? */ above?
2. Any differences between USB_STATUS_SUSPENDING and USB_STATUS_SUSPENDED?
> >
> > Those look simple enough. Could add little doc when each state should be
> > set. So one knows the difference betweend USB_STATUS_CONNECTED,
> > USB_STATUS_DEFAULT and USB_STATUS_CONFIGURED.
> > The flow is
> >
> > idle -> connected -> reset -> addressed -> configured
>
> idle -> connected -> resetting -> default -> addressed -> configured
>
> --
> balbi
--
Best Regards,
Peter Chen
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