1 /* 2 * tascam-midi.c - a part of driver for TASCAM FireWire series 3 * 4 * Copyright (c) 2015 Takashi Sakamoto 5 * 6 * Licensed under the terms of the GNU General Public License, version 2. 7 */ 8 9 #include "tascam.h" 10 11 static int midi_capture_open(struct snd_rawmidi_substream *substream) 12 { 13 /* Do nothing. */ 14 return 0; 15 } 16 17 static int midi_playback_open(struct snd_rawmidi_substream *substream) 18 { 19 struct snd_tscm *tscm = substream->rmidi->private_data; 20 21 /* Initialize internal status. */ 22 tscm->running_status[substream->number] = 0; 23 tscm->on_sysex[substream->number] = 0; 24 return 0; 25 } 26 27 static int midi_capture_close(struct snd_rawmidi_substream *substream) 28 { 29 /* Do nothing. */ 30 return 0; 31 } 32 33 static int midi_playback_close(struct snd_rawmidi_substream *substream) 34 { 35 struct snd_tscm *tscm = substream->rmidi->private_data; 36 37 snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]); 38 39 return 0; 40 } 41 42 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) 43 { 44 struct snd_tscm *tscm = substrm->rmidi->private_data; 45 unsigned long flags; 46 47 spin_lock_irqsave(&tscm->lock, flags); 48 49 if (up) 50 tscm->tx_midi_substreams[substrm->number] = substrm; 51 else 52 tscm->tx_midi_substreams[substrm->number] = NULL; 53 54 spin_unlock_irqrestore(&tscm->lock, flags); 55 } 56 57 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) 58 { 59 struct snd_tscm *tscm = substrm->rmidi->private_data; 60 unsigned long flags; 61 62 spin_lock_irqsave(&tscm->lock, flags); 63 64 if (up) 65 snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number], 66 substrm); 67 68 spin_unlock_irqrestore(&tscm->lock, flags); 69 } 70 71 int snd_tscm_create_midi_devices(struct snd_tscm *tscm) 72 { 73 static const struct snd_rawmidi_ops capture_ops = { 74 .open = midi_capture_open, 75 .close = midi_capture_close, 76 .trigger = midi_capture_trigger, 77 }; 78 static const struct snd_rawmidi_ops playback_ops = { 79 .open = midi_playback_open, 80 .close = midi_playback_close, 81 .trigger = midi_playback_trigger, 82 }; 83 struct snd_rawmidi *rmidi; 84 struct snd_rawmidi_str *stream; 85 struct snd_rawmidi_substream *subs; 86 int err; 87 88 err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0, 89 tscm->spec->midi_playback_ports, 90 tscm->spec->midi_capture_ports, 91 &rmidi); 92 if (err < 0) 93 return err; 94 95 snprintf(rmidi->name, sizeof(rmidi->name), 96 "%s MIDI", tscm->card->shortname); 97 rmidi->private_data = tscm; 98 99 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; 100 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, 101 &capture_ops); 102 stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; 103 104 /* Set port names for MIDI input. */ 105 list_for_each_entry(subs, &stream->substreams, list) { 106 /* TODO: support virtual MIDI ports. */ 107 if (subs->number < tscm->spec->midi_capture_ports) { 108 /* Hardware MIDI ports. */ 109 snprintf(subs->name, sizeof(subs->name), 110 "%s MIDI %d", 111 tscm->card->shortname, subs->number + 1); 112 } 113 } 114 115 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; 116 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, 117 &playback_ops); 118 stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; 119 120 /* Set port names for MIDI ourput. */ 121 list_for_each_entry(subs, &stream->substreams, list) { 122 if (subs->number < tscm->spec->midi_playback_ports) { 123 /* Hardware MIDI ports only. */ 124 snprintf(subs->name, sizeof(subs->name), 125 "%s MIDI %d", 126 tscm->card->shortname, subs->number + 1); 127 } 128 } 129 130 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; 131 132 return 0; 133 } 134