1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family 4 * 5 * Copyright (c) 2014-2015 Takashi Sakamoto 6 */ 7 8 #include "digi00x.h" 9 10 static int midi_open(struct snd_rawmidi_substream *substream) 11 { 12 struct snd_dg00x *dg00x = substream->rmidi->private_data; 13 int err; 14 15 err = snd_dg00x_stream_lock_try(dg00x); 16 if (err < 0) 17 return err; 18 19 mutex_lock(&dg00x->mutex); 20 err = snd_dg00x_stream_reserve_duplex(dg00x, 0, 0, 0); 21 if (err >= 0) { 22 ++dg00x->substreams_counter; 23 err = snd_dg00x_stream_start_duplex(dg00x); 24 if (err < 0) 25 --dg00x->substreams_counter; 26 } 27 mutex_unlock(&dg00x->mutex); 28 if (err < 0) 29 snd_dg00x_stream_lock_release(dg00x); 30 31 return err; 32 } 33 34 static int midi_close(struct snd_rawmidi_substream *substream) 35 { 36 struct snd_dg00x *dg00x = substream->rmidi->private_data; 37 38 mutex_lock(&dg00x->mutex); 39 --dg00x->substreams_counter; 40 snd_dg00x_stream_stop_duplex(dg00x); 41 mutex_unlock(&dg00x->mutex); 42 43 snd_dg00x_stream_lock_release(dg00x); 44 return 0; 45 } 46 47 static void midi_capture_trigger(struct snd_rawmidi_substream *substream, 48 int up) 49 { 50 struct snd_dg00x *dg00x = substream->rmidi->private_data; 51 unsigned int port; 52 unsigned long flags; 53 54 if (substream->rmidi->device == 0) 55 port = substream->number; 56 else 57 port = 2; 58 59 spin_lock_irqsave(&dg00x->lock, flags); 60 61 if (up) 62 amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream); 63 else 64 amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL); 65 66 spin_unlock_irqrestore(&dg00x->lock, flags); 67 } 68 69 static void midi_playback_trigger(struct snd_rawmidi_substream *substream, 70 int up) 71 { 72 struct snd_dg00x *dg00x = substream->rmidi->private_data; 73 unsigned int port; 74 unsigned long flags; 75 76 if (substream->rmidi->device == 0) 77 port = substream->number; 78 else 79 port = 2; 80 81 spin_lock_irqsave(&dg00x->lock, flags); 82 83 if (up) 84 amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream); 85 else 86 amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL); 87 88 spin_unlock_irqrestore(&dg00x->lock, flags); 89 } 90 91 static void set_substream_names(struct snd_dg00x *dg00x, 92 struct snd_rawmidi *rmidi, bool is_console) 93 { 94 struct snd_rawmidi_substream *subs; 95 struct snd_rawmidi_str *str; 96 int i; 97 98 for (i = 0; i < 2; ++i) { 99 str = &rmidi->streams[i]; 100 101 list_for_each_entry(subs, &str->substreams, list) { 102 if (!is_console) { 103 scnprintf(subs->name, sizeof(subs->name), 104 "%s MIDI %d", 105 dg00x->card->shortname, 106 subs->number + 1); 107 } else { 108 scnprintf(subs->name, sizeof(subs->name), 109 "%s control", 110 dg00x->card->shortname); 111 } 112 } 113 } 114 } 115 116 static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports, 117 unsigned int in_ports, bool is_console) 118 { 119 static const struct snd_rawmidi_ops capture_ops = { 120 .open = midi_open, 121 .close = midi_close, 122 .trigger = midi_capture_trigger, 123 }; 124 static const struct snd_rawmidi_ops playback_ops = { 125 .open = midi_open, 126 .close = midi_close, 127 .trigger = midi_playback_trigger, 128 }; 129 const char *label; 130 struct snd_rawmidi *rmidi; 131 int err; 132 133 /* Add physical midi ports. */ 134 err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console, 135 out_ports, in_ports, &rmidi); 136 if (err < 0) 137 return err; 138 rmidi->private_data = dg00x; 139 140 if (!is_console) 141 label = "%s control"; 142 else 143 label = "%s MIDI"; 144 snprintf(rmidi->name, sizeof(rmidi->name), label, 145 dg00x->card->shortname); 146 147 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops); 148 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops); 149 150 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT | 151 SNDRV_RAWMIDI_INFO_OUTPUT | 152 SNDRV_RAWMIDI_INFO_DUPLEX; 153 154 set_substream_names(dg00x, rmidi, is_console); 155 156 return 0; 157 } 158 159 int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x) 160 { 161 int err; 162 163 /* Add physical midi ports. */ 164 err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, 165 false); 166 if (err < 0) 167 return err; 168 169 if (dg00x->is_console) 170 err = add_substream_pair(dg00x, 1, 1, true); 171 172 return err; 173 } 174