/*
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 midi_buffer *mb = &line6midi->midibuf_out;
unsigned char chunk[LINE6_FALLBACK_MAXPACKETSIZE];
int req, done;
for (;;) {
req = min(line6_midibuf_bytes_free(mb), line6->max_packet_size);
done = snd_rawmidi_transmit_peek(substream, chunk, req);
if (done == 0)
break;
line6_midibuf_write(mb, chunk, done);
snd_rawmidi_transmit_ack(substream, done);
}
for (;;) {
done = line6_midibuf_read(mb, chunk,
LINE6_FALLBACK_MAXPACKETSIZE);
if (done == 0)
break;
send_midi_async(line6, chunk, done);
}
}
/*
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;
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;
send_midi_async(line6, chunk, done);
}
spin_unlock_irqrestore(&line6->line6midi->midi_transmit_lock, flags);
}
static void line6_midi_output_drain(struct snd_rawmidi_substream *substream)
{
struct usb_line6 *line6 =
line6_rawmidi_substream_midi(substream)->line6;
struct snd_line6_midi *midi = line6->line6midi;
wait_event_interruptible(midi->send_wait,
midi->num_active_send_urbs == 0);
}
static void line6_midi_input_trigger(struct snd_rawmidi_substream *substream,
int up)
{
struct usb_line6 *line6 = line6_rawmidi_substream_midi(substream)->line6;
if (up)
line6->line6midi->substream_receive = substream;
else
line6->line6midi->substream_receive = 0;
}
static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream,
int up)
{
unsigned long flags;
struct usb_line6 *line6 = line6_rawmidi_substream_midi(substream)->line6;
line6->line6midi->substream_transmit = substream;
spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags);
if (line6->line6midi->num_active_send_urbs == 0)
line6_midi_transmit(substream);
spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags);
}
static void line6_midi_output_drain(struct snd_rawmidi_substream *substream)
{
struct usb_line6 *line6 = line6_rawmidi_substream_midi(substream)->line6;
wait_queue_head_t *head = &line6->line6midi->send_wait;
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(head, &wait);
current->state = TASK_INTERRUPTIBLE;
while (line6->line6midi->num_active_send_urbs > 0)
if (signal_pending(current))
break;
else
schedule();
current->state = TASK_RUNNING;
remove_wait_queue(head, &wait);
}
/*
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);
}
