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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family4 *5 * Copyright (c) 2014-2015 Takashi Sakamoto6 */7 8#include "digi00x.h"9 10static 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 34static 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 47static 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 else57 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 else64 amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL);65 66 spin_unlock_irqrestore(&dg00x->lock, flags);67}68 69static 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 else79 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 else86 amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL);87 88 spin_unlock_irqrestore(&dg00x->lock, flags);89}90 91static 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 116static 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 else143 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 159int 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