320 	struct f_sourcesink	*ss = func_to_ss(f);  in sourcesink_bind()  local
332 	ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc);  in sourcesink_bind()
333 	if (!ss->in_ep) {  in sourcesink_bind()
340 	ss->out_ep = usb_ep_autoconfig(cdev->gadget, &fs_sink_desc);  in sourcesink_bind()
341 	if (!ss->out_ep)  in sourcesink_bind()
345 	if (ss->isoc_interval < 1)  in sourcesink_bind()
346 		ss->isoc_interval = 1;  in sourcesink_bind()
347 	if (ss->isoc_interval > 16)  in sourcesink_bind()
348 		ss->isoc_interval = 16;  in sourcesink_bind()
349 	if (ss->isoc_mult > 2)  in sourcesink_bind()
350 		ss->isoc_mult = 2;  in sourcesink_bind()
351 	if (ss->isoc_maxburst > 15)  in sourcesink_bind()
352 		ss->isoc_maxburst = 15;  in sourcesink_bind()
355 	fs_iso_source_desc.wMaxPacketSize = ss->isoc_maxpacket > 1023 ?  in sourcesink_bind()
356 						1023 : ss->isoc_maxpacket;  in sourcesink_bind()
357 	fs_iso_source_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
358 	fs_iso_sink_desc.wMaxPacketSize = ss->isoc_maxpacket > 1023 ?  in sourcesink_bind()
359 						1023 : ss->isoc_maxpacket;  in sourcesink_bind()
360 	fs_iso_sink_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
363 	ss->iso_in_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_source_desc);  in sourcesink_bind()
364 	if (!ss->iso_in_ep)  in sourcesink_bind()
367 	ss->iso_out_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_sink_desc);  in sourcesink_bind()
368 	if (!ss->iso_out_ep) {  in sourcesink_bind()
369 		usb_ep_autoconfig_release(ss->iso_in_ep);  in sourcesink_bind()
370 		ss->iso_in_ep = NULL;  in sourcesink_bind()
382 	if (ss->isoc_maxpacket > 1024)  in sourcesink_bind()
383 		ss->isoc_maxpacket = 1024;  in sourcesink_bind()
394 	hs_iso_source_desc.wMaxPacketSize = ss->isoc_maxpacket;  in sourcesink_bind()
395 	hs_iso_source_desc.wMaxPacketSize |= ss->isoc_mult << 11;  in sourcesink_bind()
396 	hs_iso_source_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
400 	hs_iso_sink_desc.wMaxPacketSize = ss->isoc_maxpacket;  in sourcesink_bind()
401 	hs_iso_sink_desc.wMaxPacketSize |= ss->isoc_mult << 11;  in sourcesink_bind()
402 	hs_iso_sink_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
416 	ss_iso_source_desc.wMaxPacketSize = ss->isoc_maxpacket;  in sourcesink_bind()
417 	ss_iso_source_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
418 	ss_iso_source_comp_desc.bmAttributes = ss->isoc_mult;  in sourcesink_bind()
419 	ss_iso_source_comp_desc.bMaxBurst = ss->isoc_maxburst;  in sourcesink_bind()
420 	ss_iso_source_comp_desc.wBytesPerInterval = ss->isoc_maxpacket *  in sourcesink_bind()
421 		(ss->isoc_mult + 1) * (ss->isoc_maxburst + 1);  in sourcesink_bind()
425 	ss_iso_sink_desc.wMaxPacketSize = ss->isoc_maxpacket;  in sourcesink_bind()
426 	ss_iso_sink_desc.bInterval = ss->isoc_interval;  in sourcesink_bind()
427 	ss_iso_sink_comp_desc.bmAttributes = ss->isoc_mult;  in sourcesink_bind()
428 	ss_iso_sink_comp_desc.bMaxBurst = ss->isoc_maxburst;  in sourcesink_bind()
429 	ss_iso_sink_comp_desc.wBytesPerInterval = ss->isoc_maxpacket *  in sourcesink_bind()
430 		(ss->isoc_mult + 1) * (ss->isoc_maxburst + 1);  in sourcesink_bind()
440 			f->name, ss->in_ep->name, ss->out_ep->name,  in sourcesink_bind()
441 			ss->iso_in_ep ? ss->iso_in_ep->name : "<none>",  in sourcesink_bind()
442 			ss->iso_out_ep ? ss->iso_out_ep->name : "<none>");  in sourcesink_bind()
462 static int check_read_data(struct f_sourcesink *ss, struct usb_request *req)  in check_read_data()  argument
466 	struct usb_composite_dev *cdev = ss->function.config->cdev;  in check_read_data()
467 	int max_packet_size = le16_to_cpu(ss->out_ep->desc->wMaxPacketSize);  in check_read_data()
469 	if (ss->pattern == 2)  in check_read_data()
473 		switch (ss->pattern) {  in check_read_data()
494 		usb_ep_set_halt(ss->out_ep);  in check_read_data()
505 	struct f_sourcesink *ss = ep->driver_data;  in reinit_write_data()  local
507 	switch (ss->pattern) {  in reinit_write_data()
523 	struct f_sourcesink		*ss = ep->driver_data;  in source_sink_complete()  local
527 	if (!ss)  in source_sink_complete()
530 	cdev = ss->function.config->cdev;  in source_sink_complete()
535 		if (ep == ss->out_ep) {  in source_sink_complete()
536 			check_read_data(ss, req);  in source_sink_complete()
537 			if (ss->pattern != 2)  in source_sink_complete()
548 		if (ep == ss->out_ep)  in source_sink_complete()
549 			check_read_data(ss, req);  in source_sink_complete()
576 static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in,  in source_sink_start_ep()  argument
587 			size = ss->isoc_maxpacket *  in source_sink_start_ep()
588 					(ss->isoc_mult + 1) *  in source_sink_start_ep()
589 					(ss->isoc_maxburst + 1);  in source_sink_start_ep()
592 			size = ss->isoc_maxpacket * (ss->isoc_mult + 1);  in source_sink_start_ep()
595 			size = ss->isoc_maxpacket > 1023 ?  in source_sink_start_ep()
596 					1023 : ss->isoc_maxpacket;  in source_sink_start_ep()
599 		ep = is_in ? ss->iso_in_ep : ss->iso_out_ep;  in source_sink_start_ep()
600 		qlen = ss->iso_qlen;  in source_sink_start_ep()
602 		ep = is_in ? ss->in_ep : ss->out_ep;  in source_sink_start_ep()
603 		qlen = ss->bulk_qlen;  in source_sink_start_ep()
604 		size = ss->buflen;  in source_sink_start_ep()
615 		else if (ss->pattern != 2)  in source_sink_start_ep()
622 			cdev = ss->function.config->cdev;  in source_sink_start_ep()
634 static void disable_source_sink(struct f_sourcesink *ss)  in disable_source_sink()  argument
638 	cdev = ss->function.config->cdev;  in disable_source_sink()
639 	disable_endpoints(cdev, ss->in_ep, ss->out_ep, ss->iso_in_ep,  in disable_source_sink()
640 			ss->iso_out_ep);  in disable_source_sink()
641 	VDBG(cdev, "%s disabled\n", ss->function.name);  in disable_source_sink()
645 enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss,  in enable_source_sink()  argument
653 	ep = ss->in_ep;  in enable_source_sink()
654 	result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);  in enable_source_sink()
660 	ep->driver_data = ss;  in enable_source_sink()
662 	result = source_sink_start_ep(ss, true, false, speed);  in enable_source_sink()
665 		ep = ss->in_ep;  in enable_source_sink()
671 	ep = ss->out_ep;  in enable_source_sink()
672 	result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);  in enable_source_sink()
678 	ep->driver_data = ss;  in enable_source_sink()
680 	result = source_sink_start_ep(ss, false, false, speed);  in enable_source_sink()
683 		ep = ss->out_ep;  in enable_source_sink()
692 	ep = ss->iso_in_ep;  in enable_source_sink()
694 		result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);  in enable_source_sink()
700 		ep->driver_data = ss;  in enable_source_sink()
702 		result = source_sink_start_ep(ss, true, true, speed);  in enable_source_sink()
705 			ep = ss->iso_in_ep;  in enable_source_sink()
713 	ep = ss->iso_out_ep;  in enable_source_sink()
715 		result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);  in enable_source_sink()
721 		ep->driver_data = ss;  in enable_source_sink()
723 		result = source_sink_start_ep(ss, false, true, speed);  in enable_source_sink()
730 	ss->cur_alt = alt;  in enable_source_sink()
732 	DBG(cdev, "%s enabled, alt intf %d\n", ss->function.name, alt);  in enable_source_sink()
739 	struct f_sourcesink		*ss = func_to_ss(f);  in sourcesink_set_alt()  local
742 	disable_source_sink(ss);  in sourcesink_set_alt()
743 	return enable_source_sink(cdev, ss, alt);  in sourcesink_set_alt()
748 	struct f_sourcesink		*ss = func_to_ss(f);  in sourcesink_get_alt()  local
750 	return ss->cur_alt;  in sourcesink_get_alt()
755 	struct f_sourcesink	*ss = func_to_ss(f);  in sourcesink_disable()  local
757 	disable_source_sink(ss);  in sourcesink_disable()
837 	struct f_sourcesink     *ss;  in source_sink_alloc_func()  local
840 	ss = kzalloc(sizeof(*ss), GFP_KERNEL);  in source_sink_alloc_func()
841 	if (!ss)  in source_sink_alloc_func()
850 	ss->pattern = ss_opts->pattern;  in source_sink_alloc_func()
851 	ss->isoc_interval = ss_opts->isoc_interval;  in source_sink_alloc_func()
852 	ss->isoc_maxpacket = ss_opts->isoc_maxpacket;  in source_sink_alloc_func()
853 	ss->isoc_mult = ss_opts->isoc_mult;  in source_sink_alloc_func()
854 	ss->isoc_maxburst = ss_opts->isoc_maxburst;  in source_sink_alloc_func()
855 	ss->buflen = ss_opts->bulk_buflen;  in source_sink_alloc_func()
856 	ss->bulk_qlen = ss_opts->bulk_qlen;  in source_sink_alloc_func()
857 	ss->iso_qlen = ss_opts->iso_qlen;  in source_sink_alloc_func()
859 	ss->function.name = "source/sink";  in source_sink_alloc_func()
860 	ss->function.bind = sourcesink_bind;  in source_sink_alloc_func()
861 	ss->function.set_alt = sourcesink_set_alt;  in source_sink_alloc_func()
862 	ss->function.get_alt = sourcesink_get_alt;  in source_sink_alloc_func()
863 	ss->function.disable = sourcesink_disable;  in source_sink_alloc_func()
864 	ss->function.setup = sourcesink_setup;  in source_sink_alloc_func()
865 	ss->function.strings = sourcesink_strings;  in source_sink_alloc_func()
867 	ss->function.free_func = sourcesink_free_func;  in source_sink_alloc_func()
869 	return &ss->function;  in source_sink_alloc_func()