/*
Read data from MIDI buffer and transmit them via USB.
*/
static void line6_midi_transmit(struct snd_rawmidi_substream *substream)
{
struct usb_line6 *line6 =
line6_rawmidi_substream_midi(substream)->line6;
struct snd_line6_midi *line6midi = line6->line6midi;
struct MidiBuffer *mb = &line6midi->midibuf_out;
unsigned long flags;
unsigned char chunk[line6->max_packet_size];
int req, done;
spin_lock_irqsave(&line6->line6midi->midi_transmit_lock, flags);
for (;;) {
req = min(line6_midibuf_bytes_free(mb), line6->max_packet_size);
done = snd_rawmidi_transmit_peek(substream, chunk, req);
if (done == 0)
break;
#ifdef CONFIG_LINE6_USB_DUMP_MIDI
line6_write_hexdump(line6, 's', chunk, done);
#endif
line6_midibuf_write(mb, chunk, done);
snd_rawmidi_transmit_ack(substream, done);
}
for (;;) {
done = line6_midibuf_read(mb, chunk, line6->max_packet_size);
if (done == 0)
break;
if (line6_midibuf_skip_message
(mb, line6midi->midi_mask_transmit))
continue;
send_midi_async(line6, chunk, done);
}
spin_unlock_irqrestore(&line6->line6midi->midi_transmit_lock, flags);
}
/*
Notification of data received from the Line6 device.
*/
static void line6_data_received(struct urb *urb)
{
struct usb_line6 *line6 = (struct usb_line6 *)urb->context;
struct MidiBuffer *mb = &line6->line6midi->midibuf_in;
int done;
if (urb->status == -ESHUTDOWN)
return;
#ifdef CONFIG_LINE6_USB_DUMP_CTRL
line6_dump_urb(urb);
#endif
done =
line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length);
if (done < urb->actual_length) {
line6_midibuf_ignore(mb, done);
DEBUG_MESSAGES(dev_err
(line6->ifcdev,
"%d %d buffer overflow - message skipped\n",
done, urb->actual_length));
}
for (;;) {
done =
line6_midibuf_read(mb, line6->buffer_message,
LINE6_MESSAGE_MAXLEN);
if (done == 0)
break;
/* MIDI input filter */
if (line6_midibuf_skip_message
(mb, line6->line6midi->midi_mask_receive))
continue;
line6->message_length = done;
#ifdef CONFIG_LINE6_USB_DUMP_MIDI
line6_write_hexdump(line6, 'r', line6->buffer_message, done);
#endif
line6_midi_receive(line6, line6->buffer_message, done);
switch (line6->usbdev->descriptor.idProduct) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
case LINE6_DEVID_POCKETPOD:
line6_pod_process_message((struct usb_line6_pod *)
line6);
break;
case LINE6_DEVID_PODXTLIVE:
switch (line6->interface_number) {
case PODXTLIVE_INTERFACE_POD:
line6_pod_process_message((struct usb_line6_pod
*)line6);
break;
case PODXTLIVE_INTERFACE_VARIAX:
line6_variax_process_message((struct
usb_line6_variax
*)line6);
break;
default:
dev_err(line6->ifcdev,
"PODxt Live interface %d not supported\n",
line6->interface_number);
}
break;
case LINE6_DEVID_VARIAX:
line6_variax_process_message((struct usb_line6_variax *)
line6);
break;
default:
MISSING_CASE;
}
}
line6_start_listen(line6);
}