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0db18e7e TS |
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 | static struct snd_rawmidi_ops midi_capture_ops = { | |
72 | .open = midi_capture_open, | |
73 | .close = midi_capture_close, | |
74 | .trigger = midi_capture_trigger, | |
75 | }; | |
76 | ||
77 | static struct snd_rawmidi_ops midi_playback_ops = { | |
78 | .open = midi_playback_open, | |
79 | .close = midi_playback_close, | |
80 | .trigger = midi_playback_trigger, | |
81 | }; | |
82 | ||
83 | int snd_tscm_create_midi_devices(struct snd_tscm *tscm) | |
84 | { | |
85 | struct snd_rawmidi *rmidi; | |
86 | struct snd_rawmidi_str *stream; | |
87 | struct snd_rawmidi_substream *subs; | |
88 | int err; | |
89 | ||
90 | err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0, | |
91 | tscm->spec->midi_playback_ports, | |
92 | tscm->spec->midi_capture_ports, | |
93 | &rmidi); | |
94 | if (err < 0) | |
95 | return err; | |
96 | ||
97 | snprintf(rmidi->name, sizeof(rmidi->name), | |
98 | "%s MIDI", tscm->card->shortname); | |
99 | rmidi->private_data = tscm; | |
100 | ||
101 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; | |
102 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
103 | &midi_capture_ops); | |
104 | stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; | |
105 | ||
106 | /* Set port names for MIDI input. */ | |
107 | list_for_each_entry(subs, &stream->substreams, list) { | |
108 | /* TODO: support virtual MIDI ports. */ | |
109 | if (subs->number < tscm->spec->midi_capture_ports) { | |
110 | /* Hardware MIDI ports. */ | |
111 | snprintf(subs->name, sizeof(subs->name), | |
112 | "%s MIDI %d", | |
113 | tscm->card->shortname, subs->number + 1); | |
114 | } | |
115 | } | |
116 | ||
117 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; | |
118 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
119 | &midi_playback_ops); | |
120 | stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; | |
121 | ||
122 | /* Set port names for MIDI ourput. */ | |
123 | list_for_each_entry(subs, &stream->substreams, list) { | |
124 | if (subs->number < tscm->spec->midi_playback_ports) { | |
125 | /* Hardware MIDI ports only. */ | |
126 | snprintf(subs->name, sizeof(subs->name), | |
127 | "%s MIDI %d", | |
128 | tscm->card->shortname, subs->number + 1); | |
129 | } | |
130 | } | |
131 | ||
132 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; | |
133 | ||
134 | return 0; | |
135 | } |