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 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 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 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 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 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 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 void set_midi_substream_names(struct snd_efw *efw, 111 struct snd_rawmidi_str *str) 112 { 113 struct snd_rawmidi_substream *subs; 114 115 list_for_each_entry(subs, &str->substreams, list) { 116 snprintf(subs->name, sizeof(subs->name), 117 "%s MIDI %d", efw->card->shortname, subs->number + 1); 118 } 119 } 120 121 int snd_efw_create_midi_devices(struct snd_efw *efw) 122 { 123 static const struct snd_rawmidi_ops capture_ops = { 124 .open = midi_capture_open, 125 .close = midi_capture_close, 126 .trigger = midi_capture_trigger, 127 }; 128 static const struct snd_rawmidi_ops playback_ops = { 129 .open = midi_playback_open, 130 .close = midi_playback_close, 131 .trigger = midi_playback_trigger, 132 }; 133 struct snd_rawmidi *rmidi; 134 struct snd_rawmidi_str *str; 135 int err; 136 137 /* create midi ports */ 138 err = snd_rawmidi_new(efw->card, efw->card->driver, 0, 139 efw->midi_out_ports, efw->midi_in_ports, 140 &rmidi); 141 if (err < 0) 142 return err; 143 144 snprintf(rmidi->name, sizeof(rmidi->name), 145 "%s MIDI", efw->card->shortname); 146 rmidi->private_data = efw; 147 148 if (efw->midi_in_ports > 0) { 149 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; 150 151 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, 152 &capture_ops); 153 154 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; 155 156 set_midi_substream_names(efw, str); 157 } 158 159 if (efw->midi_out_ports > 0) { 160 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; 161 162 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, 163 &playback_ops); 164 165 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; 166 167 set_midi_substream_names(efw, str); 168 } 169 170 if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0)) 171 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; 172 173 return 0; 174 } 175