1 /*
2 * fireworks_midi.c - a part of driver for Fireworks based devices
3 *
4 * Copyright (c) 2009-2010 Clemens Ladisch
5 * Copyright (c) 2013-2014 Takashi Sakamoto
6 *
7 * Licensed under the terms of the GNU General Public License, version 2.
8 */
9 #include "fireworks.h"
10
midi_capture_open(struct snd_rawmidi_substream * substream)11 static int midi_capture_open(struct snd_rawmidi_substream *substream)
12 {
13 struct snd_efw *efw = substream->rmidi->private_data;
14 int err;
15
16 err = snd_efw_stream_lock_try(efw);
17 if (err < 0)
18 goto end;
19
20 mutex_lock(&efw->mutex);
21 efw->capture_substreams++;
22 err = snd_efw_stream_start_duplex(efw, 0);
23 mutex_unlock(&efw->mutex);
24 if (err < 0)
25 snd_efw_stream_lock_release(efw);
26
27 end:
28 return err;
29 }
30
midi_playback_open(struct snd_rawmidi_substream * substream)31 static int midi_playback_open(struct snd_rawmidi_substream *substream)
32 {
33 struct snd_efw *efw = substream->rmidi->private_data;
34 int err;
35
36 err = snd_efw_stream_lock_try(efw);
37 if (err < 0)
38 goto end;
39
40 mutex_lock(&efw->mutex);
41 efw->playback_substreams++;
42 err = snd_efw_stream_start_duplex(efw, 0);
43 mutex_unlock(&efw->mutex);
44 if (err < 0)
45 snd_efw_stream_lock_release(efw);
46 end:
47 return err;
48 }
49
midi_capture_close(struct snd_rawmidi_substream * substream)50 static int midi_capture_close(struct snd_rawmidi_substream *substream)
51 {
52 struct snd_efw *efw = substream->rmidi->private_data;
53
54 mutex_lock(&efw->mutex);
55 efw->capture_substreams--;
56 snd_efw_stream_stop_duplex(efw);
57 mutex_unlock(&efw->mutex);
58
59 snd_efw_stream_lock_release(efw);
60 return 0;
61 }
62
midi_playback_close(struct snd_rawmidi_substream * substream)63 static int midi_playback_close(struct snd_rawmidi_substream *substream)
64 {
65 struct snd_efw *efw = substream->rmidi->private_data;
66
67 mutex_lock(&efw->mutex);
68 efw->playback_substreams--;
69 snd_efw_stream_stop_duplex(efw);
70 mutex_unlock(&efw->mutex);
71
72 snd_efw_stream_lock_release(efw);
73 return 0;
74 }
75
midi_capture_trigger(struct snd_rawmidi_substream * substrm,int up)76 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
77 {
78 struct snd_efw *efw = substrm->rmidi->private_data;
79 unsigned long flags;
80
81 spin_lock_irqsave(&efw->lock, flags);
82
83 if (up)
84 amdtp_am824_midi_trigger(&efw->tx_stream,
85 substrm->number, substrm);
86 else
87 amdtp_am824_midi_trigger(&efw->tx_stream,
88 substrm->number, NULL);
89
90 spin_unlock_irqrestore(&efw->lock, flags);
91 }
92
midi_playback_trigger(struct snd_rawmidi_substream * substrm,int up)93 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
94 {
95 struct snd_efw *efw = substrm->rmidi->private_data;
96 unsigned long flags;
97
98 spin_lock_irqsave(&efw->lock, flags);
99
100 if (up)
101 amdtp_am824_midi_trigger(&efw->rx_stream,
102 substrm->number, substrm);
103 else
104 amdtp_am824_midi_trigger(&efw->rx_stream,
105 substrm->number, NULL);
106
107 spin_unlock_irqrestore(&efw->lock, flags);
108 }
109
110 static struct snd_rawmidi_ops midi_capture_ops = {
111 .open = midi_capture_open,
112 .close = midi_capture_close,
113 .trigger = midi_capture_trigger,
114 };
115
116 static struct snd_rawmidi_ops midi_playback_ops = {
117 .open = midi_playback_open,
118 .close = midi_playback_close,
119 .trigger = midi_playback_trigger,
120 };
121
set_midi_substream_names(struct snd_efw * efw,struct snd_rawmidi_str * str)122 static void set_midi_substream_names(struct snd_efw *efw,
123 struct snd_rawmidi_str *str)
124 {
125 struct snd_rawmidi_substream *subs;
126
127 list_for_each_entry(subs, &str->substreams, list) {
128 snprintf(subs->name, sizeof(subs->name),
129 "%s MIDI %d", efw->card->shortname, subs->number + 1);
130 }
131 }
132
snd_efw_create_midi_devices(struct snd_efw * efw)133 int snd_efw_create_midi_devices(struct snd_efw *efw)
134 {
135 struct snd_rawmidi *rmidi;
136 struct snd_rawmidi_str *str;
137 int err;
138
139 /* create midi ports */
140 err = snd_rawmidi_new(efw->card, efw->card->driver, 0,
141 efw->midi_out_ports, efw->midi_in_ports,
142 &rmidi);
143 if (err < 0)
144 return err;
145
146 snprintf(rmidi->name, sizeof(rmidi->name),
147 "%s MIDI", efw->card->shortname);
148 rmidi->private_data = efw;
149
150 if (efw->midi_in_ports > 0) {
151 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
152
153 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
154 &midi_capture_ops);
155
156 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
157
158 set_midi_substream_names(efw, str);
159 }
160
161 if (efw->midi_out_ports > 0) {
162 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
163
164 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
165 &midi_playback_ops);
166
167 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
168
169 set_midi_substream_names(efw, str);
170 }
171
172 if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0))
173 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
174
175 return 0;
176 }
177