1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * fireworks_midi.c - a part of driver for Fireworks based devices
4 *
5 * Copyright (c) 2009-2010 Clemens Ladisch
6 * Copyright (c) 2013-2014 Takashi Sakamoto
7 */
8 #include "fireworks.h"
9
midi_open(struct snd_rawmidi_substream * substream)10 static int midi_open(struct snd_rawmidi_substream *substream)
11 {
12 struct snd_efw *efw = substream->rmidi->private_data;
13 int err;
14
15 err = snd_efw_stream_lock_try(efw);
16 if (err < 0)
17 goto end;
18
19 mutex_lock(&efw->mutex);
20 err = snd_efw_stream_reserve_duplex(efw, 0, 0, 0);
21 if (err >= 0) {
22 ++efw->substreams_counter;
23 err = snd_efw_stream_start_duplex(efw);
24 if (err < 0)
25 --efw->substreams_counter;
26 }
27 mutex_unlock(&efw->mutex);
28 if (err < 0)
29 snd_efw_stream_lock_release(efw);
30 end:
31 return err;
32 }
33
midi_close(struct snd_rawmidi_substream * substream)34 static int midi_close(struct snd_rawmidi_substream *substream)
35 {
36 struct snd_efw *efw = substream->rmidi->private_data;
37
38 mutex_lock(&efw->mutex);
39 --efw->substreams_counter;
40 snd_efw_stream_stop_duplex(efw);
41 mutex_unlock(&efw->mutex);
42
43 snd_efw_stream_lock_release(efw);
44 return 0;
45 }
46
midi_capture_trigger(struct snd_rawmidi_substream * substrm,int up)47 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
48 {
49 struct snd_efw *efw = substrm->rmidi->private_data;
50 unsigned long flags;
51
52 spin_lock_irqsave(&efw->lock, flags);
53
54 if (up)
55 amdtp_am824_midi_trigger(&efw->tx_stream,
56 substrm->number, substrm);
57 else
58 amdtp_am824_midi_trigger(&efw->tx_stream,
59 substrm->number, NULL);
60
61 spin_unlock_irqrestore(&efw->lock, flags);
62 }
63
midi_playback_trigger(struct snd_rawmidi_substream * substrm,int up)64 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
65 {
66 struct snd_efw *efw = substrm->rmidi->private_data;
67 unsigned long flags;
68
69 spin_lock_irqsave(&efw->lock, flags);
70
71 if (up)
72 amdtp_am824_midi_trigger(&efw->rx_stream,
73 substrm->number, substrm);
74 else
75 amdtp_am824_midi_trigger(&efw->rx_stream,
76 substrm->number, NULL);
77
78 spin_unlock_irqrestore(&efw->lock, flags);
79 }
80
set_midi_substream_names(struct snd_efw * efw,struct snd_rawmidi_str * str)81 static void set_midi_substream_names(struct snd_efw *efw,
82 struct snd_rawmidi_str *str)
83 {
84 struct snd_rawmidi_substream *subs;
85
86 list_for_each_entry(subs, &str->substreams, list) {
87 scnprintf(subs->name, sizeof(subs->name),
88 "%s MIDI %d", efw->card->shortname, subs->number + 1);
89 }
90 }
91
snd_efw_create_midi_devices(struct snd_efw * efw)92 int snd_efw_create_midi_devices(struct snd_efw *efw)
93 {
94 static const struct snd_rawmidi_ops capture_ops = {
95 .open = midi_open,
96 .close = midi_close,
97 .trigger = midi_capture_trigger,
98 };
99 static const struct snd_rawmidi_ops playback_ops = {
100 .open = midi_open,
101 .close = midi_close,
102 .trigger = midi_playback_trigger,
103 };
104 struct snd_rawmidi *rmidi;
105 struct snd_rawmidi_str *str;
106 int err;
107
108 /* create midi ports */
109 err = snd_rawmidi_new(efw->card, efw->card->driver, 0,
110 efw->midi_out_ports, efw->midi_in_ports,
111 &rmidi);
112 if (err < 0)
113 return err;
114
115 snprintf(rmidi->name, sizeof(rmidi->name),
116 "%s MIDI", efw->card->shortname);
117 rmidi->private_data = efw;
118
119 if (efw->midi_in_ports > 0) {
120 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
121
122 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
123 &capture_ops);
124
125 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
126
127 set_midi_substream_names(efw, str);
128 }
129
130 if (efw->midi_out_ports > 0) {
131 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
132
133 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
134 &playback_ops);
135
136 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
137
138 set_midi_substream_names(efw, str);
139 }
140
141 if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0))
142 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
143
144 return 0;
145 }
146