--- /dev/null
+/*
+ * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family
+ *
+ * Copyright (c) 2014-2015 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "digi00x.h"
+
+static int midi_phys_open(struct snd_rawmidi_substream *substream)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ int err;
+
+ err = snd_dg00x_stream_lock_try(dg00x);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&dg00x->mutex);
+ dg00x->substreams_counter++;
+ err = snd_dg00x_stream_start_duplex(dg00x, 0);
+ mutex_unlock(&dg00x->mutex);
+ if (err < 0)
+ snd_dg00x_stream_lock_release(dg00x);
+
+ return err;
+}
+
+static int midi_phys_close(struct snd_rawmidi_substream *substream)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+
+ mutex_lock(&dg00x->mutex);
+ dg00x->substreams_counter--;
+ snd_dg00x_stream_stop_duplex(dg00x);
+ mutex_unlock(&dg00x->mutex);
+
+ snd_dg00x_stream_lock_release(dg00x);
+ return 0;
+}
+
+static void midi_phys_capture_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ amdtp_dot_midi_trigger(&dg00x->tx_stream, substream->number,
+ substream);
+ else
+ amdtp_dot_midi_trigger(&dg00x->tx_stream, substream->number,
+ NULL);
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static void midi_phys_playback_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ amdtp_dot_midi_trigger(&dg00x->rx_stream, substream->number,
+ substream);
+ else
+ amdtp_dot_midi_trigger(&dg00x->rx_stream, substream->number,
+ NULL);
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static struct snd_rawmidi_ops midi_phys_capture_ops = {
+ .open = midi_phys_open,
+ .close = midi_phys_close,
+ .trigger = midi_phys_capture_trigger,
+};
+
+static struct snd_rawmidi_ops midi_phys_playback_ops = {
+ .open = midi_phys_open,
+ .close = midi_phys_close,
+ .trigger = midi_phys_playback_trigger,
+};
+
+static int midi_ctl_open(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_ctl_capture_close(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_ctl_playback_close(struct snd_rawmidi_substream *substream)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+
+ snd_fw_async_midi_port_finish(&dg00x->out_control);
+
+ return 0;
+}
+
+static void midi_ctl_capture_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ dg00x->in_control = substream;
+ else
+ dg00x->in_control = NULL;
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static void midi_ctl_playback_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ snd_fw_async_midi_port_run(&dg00x->out_control, substream);
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static struct snd_rawmidi_ops midi_ctl_capture_ops = {
+ .open = midi_ctl_open,
+ .close = midi_ctl_capture_close,
+ .trigger = midi_ctl_capture_trigger,
+};
+
+static struct snd_rawmidi_ops midi_ctl_playback_ops = {
+ .open = midi_ctl_open,
+ .close = midi_ctl_playback_close,
+ .trigger = midi_ctl_playback_trigger,
+};
+
+static void set_midi_substream_names(struct snd_dg00x *dg00x,
+ struct snd_rawmidi_str *str,
+ bool is_ctl)
+{
+ struct snd_rawmidi_substream *subs;
+
+ list_for_each_entry(subs, &str->substreams, list) {
+ if (!is_ctl)
+ snprintf(subs->name, sizeof(subs->name),
+ "%s MIDI %d",
+ dg00x->card->shortname, subs->number + 1);
+ else
+ /* This port is for asynchronous transaction. */
+ snprintf(subs->name, sizeof(subs->name),
+ "%s control",
+ dg00x->card->shortname);
+ }
+}
+
+int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x)
+{
+ struct snd_rawmidi *rmidi[2];
+ struct snd_rawmidi_str *str;
+ unsigned int i;
+ int err;
+
+ /* Add physical midi ports. */
+ err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, 0,
+ DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, &rmidi[0]);
+ if (err < 0)
+ return err;
+
+ snprintf(rmidi[0]->name, sizeof(rmidi[0]->name),
+ "%s MIDI", dg00x->card->shortname);
+
+ snd_rawmidi_set_ops(rmidi[0], SNDRV_RAWMIDI_STREAM_INPUT,
+ &midi_phys_capture_ops);
+ snd_rawmidi_set_ops(rmidi[0], SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &midi_phys_playback_ops);
+
+ /* Add a pair of control midi ports. */
+ err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, 1,
+ 1, 1, &rmidi[1]);
+ if (err < 0)
+ return err;
+
+ snprintf(rmidi[1]->name, sizeof(rmidi[1]->name),
+ "%s control", dg00x->card->shortname);
+
+ snd_rawmidi_set_ops(rmidi[1], SNDRV_RAWMIDI_STREAM_INPUT,
+ &midi_ctl_capture_ops);
+ snd_rawmidi_set_ops(rmidi[1], SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &midi_ctl_playback_ops);
+
+ for (i = 0; i < ARRAY_SIZE(rmidi); i++) {
+ rmidi[i]->private_data = dg00x;
+
+ rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+ str = &rmidi[i]->streams[SNDRV_RAWMIDI_STREAM_INPUT];
+ set_midi_substream_names(dg00x, str, i);
+
+ rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+ str = &rmidi[i]->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
+ set_midi_substream_names(dg00x, str, i);
+
+ rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+ }
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff