diff options
Diffstat (limited to 'sound/firewire/digi00x/digi00x-midi.c')
| -rw-r--r-- | sound/firewire/digi00x/digi00x-midi.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sound/firewire/digi00x/digi00x-midi.c b/sound/firewire/digi00x/digi00x-midi.c new file mode 100644 index 000000000..68eb8c39a --- /dev/null +++ b/sound/firewire/digi00x/digi00x-midi.c @@ -0,0 +1,173 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + */ + +#include "digi00x.h" + +static int midi_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); + err = snd_dg00x_stream_reserve_duplex(dg00x, 0, 0, 0); + if (err >= 0) { + ++dg00x->substreams_counter; + err = snd_dg00x_stream_start_duplex(dg00x); + if (err < 0) + --dg00x->substreams_counter; + } + mutex_unlock(&dg00x->mutex); + if (err < 0) + snd_dg00x_stream_lock_release(dg00x); + + return err; +} + +static int midi_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_capture_trigger(struct snd_rawmidi_substream *substream, + int up) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + unsigned int port; + unsigned long flags; + + if (substream->rmidi->device == 0) + port = substream->number; + else + port = 2; + + spin_lock_irqsave(&dg00x->lock, flags); + + if (up) + amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream); + else + amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL); + + spin_unlock_irqrestore(&dg00x->lock, flags); +} + +static void midi_playback_trigger(struct snd_rawmidi_substream *substream, + int up) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + unsigned int port; + unsigned long flags; + + if (substream->rmidi->device == 0) + port = substream->number; + else + port = 2; + + spin_lock_irqsave(&dg00x->lock, flags); + + if (up) + amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream); + else + amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL); + + spin_unlock_irqrestore(&dg00x->lock, flags); +} + +static void set_substream_names(struct snd_dg00x *dg00x, + struct snd_rawmidi *rmidi, bool is_console) +{ + struct snd_rawmidi_substream *subs; + struct snd_rawmidi_str *str; + int i; + + for (i = 0; i < 2; ++i) { + str = &rmidi->streams[i]; + + list_for_each_entry(subs, &str->substreams, list) { + if (!is_console) { + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", + dg00x->card->shortname, + subs->number + 1); + } else { + snprintf(subs->name, sizeof(subs->name), + "%s control", + dg00x->card->shortname); + } + } + } +} + +static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports, + unsigned int in_ports, bool is_console) +{ + static const struct snd_rawmidi_ops capture_ops = { + .open = midi_open, + .close = midi_close, + .trigger = midi_capture_trigger, + }; + static const struct snd_rawmidi_ops playback_ops = { + .open = midi_open, + .close = midi_close, + .trigger = midi_playback_trigger, + }; + const char *label; + struct snd_rawmidi *rmidi; + int err; + + /* Add physical midi ports. */ + err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console, + out_ports, in_ports, &rmidi); + if (err < 0) + return err; + rmidi->private_data = dg00x; + + if (!is_console) + label = "%s control"; + else + label = "%s MIDI"; + snprintf(rmidi->name, sizeof(rmidi->name), label, + dg00x->card->shortname); + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops); + + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT | + SNDRV_RAWMIDI_INFO_OUTPUT | + SNDRV_RAWMIDI_INFO_DUPLEX; + + set_substream_names(dg00x, rmidi, is_console); + + return 0; +} + +int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x) +{ + int err; + + /* Add physical midi ports. */ + err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, + false); + if (err < 0) + return err; + + if (dg00x->is_console) + err = add_substream_pair(dg00x, 1, 1, true); + + return err; +} |