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 atomic_inc(&efw->capture_substreams); 21 err = snd_efw_stream_start_duplex(efw, 0); 22 if (err < 0) 23 snd_efw_stream_lock_release(efw); 24 25 end: 26 return err; 27 } 28 29 static int midi_playback_open(struct snd_rawmidi_substream *substream) 30 { 31 struct snd_efw *efw = substream->rmidi->private_data; 32 int err; 33 34 err = snd_efw_stream_lock_try(efw); 35 if (err < 0) 36 goto end; 37 38 atomic_inc(&efw->playback_substreams); 39 err = snd_efw_stream_start_duplex(efw, 0); 40 if (err < 0) 41 snd_efw_stream_lock_release(efw); 42 end: 43 return err; 44 } 45 46 static int midi_capture_close(struct snd_rawmidi_substream *substream) 47 { 48 struct snd_efw *efw = substream->rmidi->private_data; 49 50 atomic_dec(&efw->capture_substreams); 51 snd_efw_stream_stop_duplex(efw); 52 53 snd_efw_stream_lock_release(efw); 54 return 0; 55 } 56 57 static int midi_playback_close(struct snd_rawmidi_substream *substream) 58 { 59 struct snd_efw *efw = substream->rmidi->private_data; 60 61 atomic_dec(&efw->playback_substreams); 62 snd_efw_stream_stop_duplex(efw); 63 64 snd_efw_stream_lock_release(efw); 65 return 0; 66 } 67 68 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) 69 { 70 struct snd_efw *efw = substrm->rmidi->private_data; 71 unsigned long flags; 72 73 spin_lock_irqsave(&efw->lock, flags); 74 75 if (up) 76 amdtp_stream_midi_trigger(&efw->tx_stream, 77 substrm->number, substrm); 78 else 79 amdtp_stream_midi_trigger(&efw->tx_stream, 80 substrm->number, NULL); 81 82 spin_unlock_irqrestore(&efw->lock, flags); 83 } 84 85 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) 86 { 87 struct snd_efw *efw = substrm->rmidi->private_data; 88 unsigned long flags; 89 90 spin_lock_irqsave(&efw->lock, flags); 91 92 if (up) 93 amdtp_stream_midi_trigger(&efw->rx_stream, 94 substrm->number, substrm); 95 else 96 amdtp_stream_midi_trigger(&efw->rx_stream, 97 substrm->number, NULL); 98 99 spin_unlock_irqrestore(&efw->lock, flags); 100 } 101 102 static struct snd_rawmidi_ops midi_capture_ops = { 103 .open = midi_capture_open, 104 .close = midi_capture_close, 105 .trigger = midi_capture_trigger, 106 }; 107 108 static struct snd_rawmidi_ops midi_playback_ops = { 109 .open = midi_playback_open, 110 .close = midi_playback_close, 111 .trigger = midi_playback_trigger, 112 }; 113 114 static void set_midi_substream_names(struct snd_efw *efw, 115 struct snd_rawmidi_str *str) 116 { 117 struct snd_rawmidi_substream *subs; 118 119 list_for_each_entry(subs, &str->substreams, list) { 120 snprintf(subs->name, sizeof(subs->name), 121 "%s MIDI %d", efw->card->shortname, subs->number + 1); 122 } 123 } 124 125 int snd_efw_create_midi_devices(struct snd_efw *efw) 126 { 127 struct snd_rawmidi *rmidi; 128 struct snd_rawmidi_str *str; 129 int err; 130 131 /* create midi ports */ 132 err = snd_rawmidi_new(efw->card, efw->card->driver, 0, 133 efw->midi_out_ports, efw->midi_in_ports, 134 &rmidi); 135 if (err < 0) 136 return err; 137 138 snprintf(rmidi->name, sizeof(rmidi->name), 139 "%s MIDI", efw->card->shortname); 140 rmidi->private_data = efw; 141 142 if (efw->midi_in_ports > 0) { 143 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; 144 145 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, 146 &midi_capture_ops); 147 148 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; 149 150 set_midi_substream_names(efw, str); 151 } 152 153 if (efw->midi_out_ports > 0) { 154 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; 155 156 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, 157 &midi_playback_ops); 158 159 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; 160 161 set_midi_substream_names(efw, str); 162 } 163 164 if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0)) 165 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; 166 167 return 0; 168 } 169