musb_gadget.c

	switch (musb->xceiv->state) {
	default:
#ifdef	CONFIG_USB_MUSB_OTG
		DBG(2, "Unhandled disconnect %s, setting a_idle\n",
			otg_state_string(musb));
		musb->xceiv->state = OTG_STATE_A_IDLE;
		MUSB_HST_MODE(musb);
		break;
	case OTG_STATE_A_PERIPHERAL:
		musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
		MUSB_HST_MODE(musb);
		break;
	case OTG_STATE_B_WAIT_ACON:
	case OTG_STATE_B_HOST:
#endif
	case OTG_STATE_B_PERIPHERAL:
	case OTG_STATE_B_IDLE:
		musb->xceiv->state = OTG_STATE_B_IDLE;
		break;
	case OTG_STATE_B_SRP_INIT:
		break;
	}

	musb->is_active = 0;
}

void musb_g_reset(struct musb *musb)
__releases(musb->lock)
__acquires(musb->lock)
{
	void __iomem	*mbase = musb->mregs;
	u8		devctl = musb_readb(mbase, MUSB_DEVCTL);
	u8		power;

	DBG(3, "<== %s addr=%x driver '%s'\n",
			(devctl & MUSB_DEVCTL_BDEVICE)
				? "B-Device" : "A-Device",
			musb_readb(mbase, MUSB_FADDR),
			musb->gadget_driver
				? musb->gadget_driver->driver.name
				: NULL
			);

	/* report disconnect, if we didn't already (flushing EP state) */
	if (musb->g.speed != USB_SPEED_UNKNOWN)
		musb_g_disconnect(musb);

	/* clear HR */
	else if (devctl & MUSB_DEVCTL_HR)
		musb_writeb(mbase, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);


	/* what speed did we negotiate? */
	power = musb_readb(mbase, MUSB_POWER);
	musb->g.speed = (power & MUSB_POWER_HSMODE)
			? USB_SPEED_HIGH : USB_SPEED_FULL;

	/* start in USB_STATE_DEFAULT */
	musb->is_active = 1;
	musb->is_suspended = 0;
	MUSB_DEV_MODE(musb);
	musb->address = 0;
	musb->ep0_state = MUSB_EP0_STAGE_SETUP;

	musb->may_wakeup = 0;
	musb->g.b_hnp_enable = 0;
	musb->g.a_alt_hnp_support = 0;
	musb->g.a_hnp_support = 0;

	/* Normal reset, as B-Device;
	 * or else after HNP, as A-Device
	 */
	if (devctl & MUSB_DEVCTL_BDEVICE) {
		musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
		musb->g.is_a_peripheral = 0;
	} else if (is_otg_enabled(musb)) {
		musb->xceiv->state = OTG_STATE_A_PERIPHERAL;
		musb->g.is_a_peripheral = 1;
	} else
		WARN_ON(1);

	/* start with default limits on VBUS power draw */
	(void) musb_gadget_vbus_draw(&musb->g,
			is_otg_enabled(musb) ? 8 : 100);
}