44 #define DRIVER_DESC "Freescale USB OTG Transceiver Driver"
47 static const char driver_name[] = "fsl-usb2-otg";
115 /* Operations that will be called from OTG Finite State Machine */
259 	if ((fsl_otg_dev->phy.otg->state == OTG_STATE_B_SRP_INIT) &&  in b_srp_end()
272 	if (!fsl_otg_dev->phy.otg->host->b_hnp_enable)  in a_wait_enum()
460 	struct usb_otg *otg = fsm->otg;  in fsl_otg_start_host()  local
463 		container_of(otg->usb_phy, struct fsl_otg, phy);  in fsl_otg_start_host()
466 	if (!otg->host)  in fsl_otg_start_host()
468 	dev = otg->host->controller;  in fsl_otg_start_host()
527 	struct usb_otg *otg = fsm->otg;  in fsl_otg_start_gadget()  local
530 	if (!otg->gadget || !otg->gadget->dev.parent)  in fsl_otg_start_gadget()
534 	dev = otg->gadget->dev.parent;  in fsl_otg_start_gadget()
549  * to the OTG.  Suspend host for OTG role detection.
551 static int fsl_otg_set_host(struct usb_otg *otg, struct usb_bus *host)  in fsl_otg_set_host()  argument
555 	if (!otg)  in fsl_otg_set_host()
558 	otg_dev = container_of(otg->usb_phy, struct fsl_otg, phy);  in fsl_otg_set_host()
562 	otg->host = host;  in fsl_otg_set_host()
570 		otg->host->otg_port = fsl_otg_initdata.otg_port;  in fsl_otg_set_host()
571 		otg->host->is_b_host = otg_dev->fsm.id;  in fsl_otg_set_host()
587 			otg->state = OTG_STATE_UNDEFINED;  in fsl_otg_set_host()
599 /* Called by initialization code of udc.  Register udc to OTG. */
600 static int fsl_otg_set_peripheral(struct usb_otg *otg,  in fsl_otg_set_peripheral()  argument
605 	if (!otg)  in fsl_otg_set_peripheral()
608 	otg_dev = container_of(otg->usb_phy, struct fsl_otg, phy);  in fsl_otg_set_peripheral()
615 		if (!otg->default_a)  in fsl_otg_set_peripheral()
616 			otg->gadget->ops->vbus_draw(otg->gadget, 0);  in fsl_otg_set_peripheral()
617 		usb_gadget_vbus_disconnect(otg->gadget);  in fsl_otg_set_peripheral()
618 		otg->gadget = 0;  in fsl_otg_set_peripheral()
624 	otg->gadget = gadget;  in fsl_otg_set_peripheral()
625 	otg->gadget->is_a_peripheral = !otg_dev->fsm.id;  in fsl_otg_set_peripheral()
663 static int fsl_otg_start_srp(struct usb_otg *otg)  in fsl_otg_start_srp()  argument
667 	if (!otg || otg->state != OTG_STATE_B_IDLE)  in fsl_otg_start_srp()
670 	otg_dev = container_of(otg->usb_phy, struct fsl_otg, phy);  in fsl_otg_start_srp()
681 static int fsl_otg_start_hnp(struct usb_otg *otg)  in fsl_otg_start_hnp()  argument
685 	if (!otg)  in fsl_otg_start_hnp()
688 	otg_dev = container_of(otg->usb_phy, struct fsl_otg, phy);  in fsl_otg_start_hnp()
702  * Interrupt handler.  OTG/host/peripheral share the same int line.
703  * OTG driver clears OTGSC interrupts and leaves USB interrupts
710 	struct usb_otg *otg = ((struct fsl_otg *)dev_id)->phy.otg;  in fsl_otg_isr()  local
716 	/* Only clear otg interrupts */  in fsl_otg_isr()
721 	otg->default_a = (fsm->id == 0);  in fsl_otg_isr()
723 	/* process OTG interrupts */  in fsl_otg_isr()
727 			otg->default_a = (fsm->id == 0);  in fsl_otg_isr()
734 			if (otg->host)  in fsl_otg_isr()
735 				otg->host->is_b_host = fsm->id;  in fsl_otg_isr()
736 			if (otg->gadget)  in fsl_otg_isr()
737 				otg->gadget->is_a_peripheral = !fsm->id;  in fsl_otg_isr()
772 /* Initialize the global variable fsl_otg_dev and request IRQ for OTG */
781 	/* allocate space to fsl otg device */  in fsl_otg_conf()
786 	fsl_otg_tc->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);  in fsl_otg_conf()
787 	if (!fsl_otg_tc->phy.otg) {  in fsl_otg_conf()
797 		pr_info("Couldn't init OTG timers\n");  in fsl_otg_conf()
802 	/* Set OTG state machine operations */  in fsl_otg_conf()
805 	/* initialize the otg structure */  in fsl_otg_conf()
809 	fsl_otg_tc->phy.otg->usb_phy = &fsl_otg_tc->phy;  in fsl_otg_conf()
810 	fsl_otg_tc->phy.otg->set_host = fsl_otg_set_host;  in fsl_otg_conf()
811 	fsl_otg_tc->phy.otg->set_peripheral = fsl_otg_set_peripheral;  in fsl_otg_conf()
812 	fsl_otg_tc->phy.otg->start_hnp = fsl_otg_start_hnp;  in fsl_otg_conf()
813 	fsl_otg_tc->phy.otg->start_srp = fsl_otg_start_srp;  in fsl_otg_conf()
817 	/* Store the otg transceiver */  in fsl_otg_conf()
820 		pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n");  in fsl_otg_conf()
827 	kfree(fsl_otg_tc->phy.otg);  in fsl_otg_conf()
832 /* OTG Initialization */
848 	fsm->otg = p_otg->phy.otg;  in usb_otg_start()
885 		kfree(p_otg->phy.otg);  in usb_otg_start()
945 		p_otg->phy.otg->state = OTG_STATE_UNDEFINED;  in usb_otg_start()
948 		p_otg->phy.otg->state = OTG_STATE_A_IDLE;  in usb_otg_start()
954 	/* enable OTG ID pin interrupt */  in usb_otg_start()
970 	/* configure the OTG */  in fsl_otg_probe()
973 		dev_err(&pdev->dev, "Couldn't configure OTG module\n");  in fsl_otg_probe()
977 	/* start OTG */  in fsl_otg_probe()
980 		dev_err(&pdev->dev, "Can't init FSL OTG device\n");  in fsl_otg_probe()
997 	kfree(fsl_otg_dev->phy.otg);  in fsl_otg_remove()