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da607e19 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
a113ff88 TS |
2 | /* |
3 | * dice_midi.c - a part of driver for Dice based devices | |
4 | * | |
5 | * Copyright (c) 2014 Takashi Sakamoto | |
a113ff88 TS |
6 | */ |
7 | #include "dice.h" | |
8 | ||
9 | static int midi_open(struct snd_rawmidi_substream *substream) | |
10 | { | |
11 | struct snd_dice *dice = substream->rmidi->private_data; | |
12 | int err; | |
13 | ||
14 | err = snd_dice_stream_lock_try(dice); | |
15 | if (err < 0) | |
16 | return err; | |
17 | ||
18 | mutex_lock(&dice->mutex); | |
19 | ||
20 | dice->substreams_counter++; | |
21 | err = snd_dice_stream_start_duplex(dice, 0); | |
22 | ||
23 | mutex_unlock(&dice->mutex); | |
24 | ||
25 | if (err < 0) | |
26 | snd_dice_stream_lock_release(dice); | |
27 | ||
28 | return err; | |
29 | } | |
30 | ||
31 | static int midi_close(struct snd_rawmidi_substream *substream) | |
32 | { | |
33 | struct snd_dice *dice = substream->rmidi->private_data; | |
34 | ||
35 | mutex_lock(&dice->mutex); | |
36 | ||
37 | dice->substreams_counter--; | |
38 | snd_dice_stream_stop_duplex(dice); | |
39 | ||
40 | mutex_unlock(&dice->mutex); | |
41 | ||
42 | snd_dice_stream_lock_release(dice); | |
43 | return 0; | |
44 | } | |
45 | ||
46 | static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) | |
47 | { | |
48 | struct snd_dice *dice = substrm->rmidi->private_data; | |
49 | unsigned long flags; | |
50 | ||
51 | spin_lock_irqsave(&dice->lock, flags); | |
52 | ||
53 | if (up) | |
8ae25b76 | 54 | amdtp_am824_midi_trigger(&dice->tx_stream[0], |
a113ff88 TS |
55 | substrm->number, substrm); |
56 | else | |
8ae25b76 | 57 | amdtp_am824_midi_trigger(&dice->tx_stream[0], |
a113ff88 TS |
58 | substrm->number, NULL); |
59 | ||
60 | spin_unlock_irqrestore(&dice->lock, flags); | |
61 | } | |
62 | ||
63 | static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) | |
64 | { | |
65 | struct snd_dice *dice = substrm->rmidi->private_data; | |
66 | unsigned long flags; | |
67 | ||
68 | spin_lock_irqsave(&dice->lock, flags); | |
69 | ||
70 | if (up) | |
8ae25b76 | 71 | amdtp_am824_midi_trigger(&dice->rx_stream[0], |
03e2a67e | 72 | substrm->number, substrm); |
a113ff88 | 73 | else |
8ae25b76 | 74 | amdtp_am824_midi_trigger(&dice->rx_stream[0], |
03e2a67e | 75 | substrm->number, NULL); |
a113ff88 TS |
76 | |
77 | spin_unlock_irqrestore(&dice->lock, flags); | |
78 | } | |
79 | ||
a113ff88 TS |
80 | static void set_midi_substream_names(struct snd_dice *dice, |
81 | struct snd_rawmidi_str *str) | |
82 | { | |
83 | struct snd_rawmidi_substream *subs; | |
84 | ||
85 | list_for_each_entry(subs, &str->substreams, list) { | |
86 | snprintf(subs->name, sizeof(subs->name), | |
87 | "%s MIDI %d", dice->card->shortname, subs->number + 1); | |
88 | } | |
89 | } | |
90 | ||
91 | int snd_dice_create_midi(struct snd_dice *dice) | |
92 | { | |
57eb6799 | 93 | static const struct snd_rawmidi_ops capture_ops = { |
fcbe08d4 TS |
94 | .open = midi_open, |
95 | .close = midi_close, | |
96 | .trigger = midi_capture_trigger, | |
97 | }; | |
57eb6799 | 98 | static const struct snd_rawmidi_ops playback_ops = { |
fcbe08d4 TS |
99 | .open = midi_open, |
100 | .close = midi_close, | |
101 | .trigger = midi_playback_trigger, | |
102 | }; | |
a113ff88 TS |
103 | struct snd_rawmidi *rmidi; |
104 | struct snd_rawmidi_str *str; | |
b9022f4d | 105 | unsigned int midi_in_ports, midi_out_ports; |
b8f78234 | 106 | int i; |
a113ff88 TS |
107 | int err; |
108 | ||
b8f78234 TS |
109 | midi_in_ports = 0; |
110 | midi_out_ports = 0; | |
111 | for (i = 0; i < MAX_STREAMS; ++i) { | |
112 | midi_in_ports = max(midi_in_ports, dice->tx_midi_ports[i]); | |
113 | midi_out_ports = max(midi_out_ports, dice->rx_midi_ports[i]); | |
114 | } | |
a113ff88 TS |
115 | |
116 | if (midi_in_ports + midi_out_ports == 0) | |
117 | return 0; | |
118 | ||
119 | /* create midi ports */ | |
120 | err = snd_rawmidi_new(dice->card, dice->card->driver, 0, | |
121 | midi_out_ports, midi_in_ports, | |
122 | &rmidi); | |
123 | if (err < 0) | |
124 | return err; | |
125 | ||
126 | snprintf(rmidi->name, sizeof(rmidi->name), | |
127 | "%s MIDI", dice->card->shortname); | |
128 | rmidi->private_data = dice; | |
129 | ||
130 | if (midi_in_ports > 0) { | |
131 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; | |
132 | ||
133 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
134 | &capture_ops); | |
135 | ||
136 | str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; | |
137 | ||
138 | set_midi_substream_names(dice, str); | |
139 | } | |
140 | ||
141 | if (midi_out_ports > 0) { | |
142 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; | |
143 | ||
144 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
145 | &playback_ops); | |
146 | ||
147 | str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; | |
148 | ||
149 | set_midi_substream_names(dice, str); | |
150 | } | |
151 | ||
152 | if ((midi_out_ports > 0) && (midi_in_ports > 0)) | |
153 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; | |
154 | ||
155 | return 0; | |
156 | } |