Lines Matching refs:midi
16 * and drivers/usb/gadget/midi.c,
35 #include <linux/usb/midi.h>
110 static void f_midi_transmit(struct f_midi *midi);
243 struct f_midi *midi = ep->driver_data;
244 struct snd_rawmidi_substream *substream = midi->out_substream[cable];
250 if (!test_bit(cable, &midi->out_triggered))
272 struct f_midi *midi = ep->driver_data;
273 struct usb_composite_dev *cdev = midi->func.config->cdev;
278 if (ep == midi->out_ep) {
281 } else if (ep == midi->in_ep) {
285 f_midi_transmit(midi);
296 if (ep == midi->out_ep) {
299 * by the midi->in_req_fifo. */
324 static void f_midi_drop_out_substreams(struct f_midi *midi)
328 for (i = 0; i < midi->in_ports; i++) {
329 struct gmidi_in_port *port = midi->in_ports_array + i;
337 static int f_midi_start_ep(struct f_midi *midi,
346 err = config_ep_by_speed(midi->gadget, f, ep);
358 ep->driver_data = midi;
365 struct f_midi *midi = func_to_midi(f);
370 if (intf != midi->ms_id)
373 err = f_midi_start_ep(midi, f, midi->in_ep);
377 err = f_midi_start_ep(midi, f, midi->out_ep);
382 while (kfifo_avail(&midi->in_req_fifo)) {
384 midi_alloc_ep_req(midi->in_ep, midi->buflen);
392 kfifo_put(&midi->in_req_fifo, req);
396 for (i = 0; i < midi->qlen && err == 0; i++) {
398 midi_alloc_ep_req(midi->out_ep, midi->buflen);
404 err = usb_ep_queue(midi->out_ep, req, GFP_ATOMIC);
406 ERROR(midi, "%s: couldn't enqueue request: %d\n",
407 midi->out_ep->name, err);
409 free_ep_req(midi->out_ep, req);
419 struct f_midi *midi = func_to_midi(f);
429 usb_ep_disable(midi->in_ep);
430 usb_ep_disable(midi->out_ep);
433 while (kfifo_get(&midi->in_req_fifo, &req))
434 free_ep_req(midi->in_ep, req);
436 f_midi_drop_out_substreams(midi);
606 static int f_midi_do_transmit(struct f_midi *midi, struct usb_ep *ep)
617 len = kfifo_peek(&midi->in_req_fifo, &req);
619 ERROR(midi, "%s: Couldn't get usb request\n", __func__);
632 for (i = midi->in_last_port; i < midi->in_ports; ++i) {
633 struct gmidi_in_port *port = midi->in_ports_array + i;
639 while (req->length + 3 < midi->buflen) {
653 midi->in_last_port = active ? i : 0;
660 ERROR(midi, "%s failed to queue req: %d\n",
661 midi->in_ep->name, err);
665 kfifo_skip(&midi->in_req_fifo);
666 kfifo_put(&midi->in_req_fifo, req);
673 static void f_midi_transmit(struct f_midi *midi)
675 struct usb_ep *ep = midi->in_ep;
683 spin_lock_irqsave(&midi->transmit_lock, flags);
686 ret = f_midi_do_transmit(midi, ep);
688 spin_unlock_irqrestore(&midi->transmit_lock, flags);
693 spin_unlock_irqrestore(&midi->transmit_lock, flags);
698 f_midi_drop_out_substreams(midi);
703 struct f_midi *midi = from_tasklet(midi, t, tasklet);
704 f_midi_transmit(midi);
709 struct f_midi *midi = substream->rmidi->private_data;
712 if (substream->number >= midi->in_ports)
715 VDBG(midi, "%s()\n", __func__);
716 port = midi->in_ports_array + substream->number;
724 struct f_midi *midi = substream->rmidi->private_data;
726 VDBG(midi, "%s()\n", __func__);
732 struct f_midi *midi = substream->rmidi->private_data;
734 if (substream->number >= midi->in_ports)
737 VDBG(midi, "%s() %d\n", __func__, up);
738 midi->in_ports_array[substream->number].active = up;
740 tasklet_hi_schedule(&midi->tasklet);
745 struct f_midi *midi = substream->rmidi->private_data;
750 VDBG(midi, "%s()\n", __func__);
751 midi->out_substream[substream->number] = substream;
757 struct f_midi *midi = substream->rmidi->private_data;
759 VDBG(midi, "%s()\n", __func__);
765 struct f_midi *midi = substream->rmidi->private_data;
767 VDBG(midi, "%s()\n", __func__);
770 set_bit(substream->number, &midi->out_triggered);
772 clear_bit(substream->number, &midi->out_triggered);
787 static inline void f_midi_unregister_card(struct f_midi *midi)
789 if (midi->card) {
790 snd_card_free(midi->card);
791 midi->card = NULL;
796 static int f_midi_register_card(struct f_midi *midi)
805 err = snd_card_new(&midi->gadget->dev, midi->index, midi->id,
808 ERROR(midi, "snd_card_new() failed\n");
811 midi->card = card;
813 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, midi, &ops);
815 ERROR(midi, "snd_device_new() failed: error %d\n", err);
826 midi->out_ports, midi->in_ports, &rmidi);
828 ERROR(midi, "snd_rawmidi_new() failed: error %d\n", err);
831 midi->rmidi = rmidi;
832 midi->in_last_port = 0;
837 rmidi->private_data = midi;
839 midi->free_ref++;
851 ERROR(midi, "snd_card_register() failed\n");
855 VDBG(midi, "%s() finished ok\n", __func__);
859 f_midi_unregister_card(midi);
873 struct f_midi *midi = func_to_midi(f);
877 midi->gadget = cdev->gadget;
878 tasklet_setup(&midi->tasklet, f_midi_in_tasklet);
879 status = f_midi_register_card(midi);
903 midi->ms_id = status;
908 midi->in_ep = usb_ep_autoconfig(cdev->gadget, &bulk_in_desc);
909 if (!midi->in_ep)
912 midi->out_ep = usb_ep_autoconfig(cdev->gadget, &bulk_out_desc);
913 if (!midi->out_ep)
937 + (midi->in_ports + midi->out_ports) *
944 for (n = 0; n < midi->in_ports; n++) {
972 for (n = 0; n < midi->out_ports; n++) {
1000 ms_out_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->in_ports);
1001 ms_out_desc.bNumEmbMIDIJack = midi->in_ports;
1003 ms_in_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->out_ports);
1004 ms_in_desc.bNumEmbMIDIJack = midi->out_ports;
1067 f_midi_unregister_card(midi);
1251 struct f_midi *midi;
1255 midi = func_to_midi(f);
1258 if (!--midi->free_ref) {
1259 kfree(midi->id);
1260 kfifo_free(&midi->in_req_fifo);
1261 kfree(midi);
1278 struct f_midi *midi = func_to_midi(f);
1286 card = midi->card;
1287 midi->card = NULL;
1296 struct f_midi *midi = NULL;
1310 midi = kzalloc(struct_size(midi, in_ports_array, opts->in_ports),
1312 if (!midi) {
1318 midi->in_ports_array[i].cable = i;
1320 /* set up ALSA midi devices */
1321 midi->id = kstrdup(opts->id, GFP_KERNEL);
1322 if (opts->id && !midi->id) {
1326 midi->in_ports = opts->in_ports;
1327 midi->out_ports = opts->out_ports;
1328 midi->index = opts->index;
1329 midi->buflen = opts->buflen;
1330 midi->qlen = opts->qlen;
1331 midi->in_last_port = 0;
1332 midi->free_ref = 1;
1334 status = kfifo_alloc(&midi->in_req_fifo, midi->qlen, GFP_KERNEL);
1338 spin_lock_init(&midi->transmit_lock);
1343 midi->func.name = "gmidi function";
1344 midi->func.bind = f_midi_bind;
1345 midi->func.unbind = f_midi_unbind;
1346 midi->func.set_alt = f_midi_set_alt;
1347 midi->func.disable = f_midi_disable;
1348 midi->func.free_func = f_midi_free;
1350 return &midi->func;
1353 if (midi)
1354 kfree(midi->id);
1355 kfree(midi);
1362 DECLARE_USB_FUNCTION_INIT(midi, f_midi_alloc_inst, f_midi_alloc);