Commit | Line | Data |
---|---|---|
da607e19 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
248b7802 TS |
2 | /* |
3 | * bebob_midi.c - a part of driver for BeBoB based devices | |
4 | * | |
5 | * Copyright (c) 2013-2014 Takashi Sakamoto | |
248b7802 TS |
6 | */ |
7 | ||
8 | #include "bebob.h" | |
9 | ||
73f7864e | 10 | static int midi_open(struct snd_rawmidi_substream *substream) |
248b7802 TS |
11 | { |
12 | struct snd_bebob *bebob = substream->rmidi->private_data; | |
618eabea TS |
13 | int err; |
14 | ||
15 | err = snd_bebob_stream_lock_try(bebob); | |
16 | if (err < 0) | |
ac2888b9 | 17 | return err; |
248b7802 | 18 | |
2a71e701 | 19 | mutex_lock(&bebob->mutex); |
8737209f | 20 | err = snd_bebob_stream_reserve_duplex(bebob, 0, 0); |
ac2888b9 TS |
21 | if (err >= 0) { |
22 | ++bebob->substreams_counter; | |
23 | err = snd_bebob_stream_start_duplex(bebob); | |
097f8ba3 TS |
24 | if (err < 0) |
25 | --bebob->substreams_counter; | |
ac2888b9 | 26 | } |
2a71e701 | 27 | mutex_unlock(&bebob->mutex); |
618eabea TS |
28 | if (err < 0) |
29 | snd_bebob_stream_lock_release(bebob); | |
ac2888b9 | 30 | |
618eabea | 31 | return err; |
248b7802 TS |
32 | } |
33 | ||
73f7864e | 34 | static int midi_close(struct snd_rawmidi_substream *substream) |
248b7802 TS |
35 | { |
36 | struct snd_bebob *bebob = substream->rmidi->private_data; | |
37 | ||
2a71e701 | 38 | mutex_lock(&bebob->mutex); |
4fd6c6c7 | 39 | bebob->substreams_counter--; |
248b7802 | 40 | snd_bebob_stream_stop_duplex(bebob); |
2a71e701 | 41 | mutex_unlock(&bebob->mutex); |
248b7802 | 42 | |
618eabea | 43 | snd_bebob_stream_lock_release(bebob); |
248b7802 TS |
44 | return 0; |
45 | } | |
46 | ||
47 | static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) | |
48 | { | |
49 | struct snd_bebob *bebob = substrm->rmidi->private_data; | |
50 | unsigned long flags; | |
51 | ||
52 | spin_lock_irqsave(&bebob->lock, flags); | |
53 | ||
54 | if (up) | |
03e2a67e TS |
55 | amdtp_am824_midi_trigger(&bebob->tx_stream, |
56 | substrm->number, substrm); | |
248b7802 | 57 | else |
03e2a67e TS |
58 | amdtp_am824_midi_trigger(&bebob->tx_stream, |
59 | substrm->number, NULL); | |
248b7802 TS |
60 | |
61 | spin_unlock_irqrestore(&bebob->lock, flags); | |
62 | } | |
63 | ||
64 | static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) | |
65 | { | |
66 | struct snd_bebob *bebob = substrm->rmidi->private_data; | |
67 | unsigned long flags; | |
68 | ||
69 | spin_lock_irqsave(&bebob->lock, flags); | |
70 | ||
71 | if (up) | |
03e2a67e TS |
72 | amdtp_am824_midi_trigger(&bebob->rx_stream, |
73 | substrm->number, substrm); | |
248b7802 | 74 | else |
03e2a67e TS |
75 | amdtp_am824_midi_trigger(&bebob->rx_stream, |
76 | substrm->number, NULL); | |
248b7802 TS |
77 | |
78 | spin_unlock_irqrestore(&bebob->lock, flags); | |
79 | } | |
80 | ||
248b7802 TS |
81 | static void set_midi_substream_names(struct snd_bebob *bebob, |
82 | struct snd_rawmidi_str *str) | |
83 | { | |
84 | struct snd_rawmidi_substream *subs; | |
85 | ||
86 | list_for_each_entry(subs, &str->substreams, list) { | |
87 | snprintf(subs->name, sizeof(subs->name), | |
88 | "%s MIDI %d", | |
89 | bebob->card->shortname, subs->number + 1); | |
90 | } | |
91 | } | |
92 | ||
93 | int snd_bebob_create_midi_devices(struct snd_bebob *bebob) | |
94 | { | |
57eb6799 | 95 | static const struct snd_rawmidi_ops capture_ops = { |
73f7864e TS |
96 | .open = midi_open, |
97 | .close = midi_close, | |
4780f774 TS |
98 | .trigger = midi_capture_trigger, |
99 | }; | |
57eb6799 | 100 | static const struct snd_rawmidi_ops playback_ops = { |
73f7864e TS |
101 | .open = midi_open, |
102 | .close = midi_close, | |
4780f774 TS |
103 | .trigger = midi_playback_trigger, |
104 | }; | |
248b7802 TS |
105 | struct snd_rawmidi *rmidi; |
106 | struct snd_rawmidi_str *str; | |
107 | int err; | |
108 | ||
109 | /* create midi ports */ | |
110 | err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0, | |
111 | bebob->midi_output_ports, bebob->midi_input_ports, | |
112 | &rmidi); | |
113 | if (err < 0) | |
114 | return err; | |
115 | ||
116 | snprintf(rmidi->name, sizeof(rmidi->name), | |
117 | "%s MIDI", bebob->card->shortname); | |
118 | rmidi->private_data = bebob; | |
119 | ||
120 | if (bebob->midi_input_ports > 0) { | |
121 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; | |
122 | ||
123 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
4780f774 | 124 | &capture_ops); |
248b7802 TS |
125 | |
126 | str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; | |
127 | ||
128 | set_midi_substream_names(bebob, str); | |
129 | } | |
130 | ||
131 | if (bebob->midi_output_ports > 0) { | |
132 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; | |
133 | ||
134 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
4780f774 | 135 | &playback_ops); |
248b7802 TS |
136 | |
137 | str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; | |
138 | ||
139 | set_midi_substream_names(bebob, str); | |
140 | } | |
141 | ||
142 | if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0)) | |
143 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; | |
144 | ||
145 | return 0; | |
146 | } |