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173 lines
3.9 KiB
173 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family |
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* |
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* Copyright (c) 2014-2015 Takashi Sakamoto |
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*/ |
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#include "digi00x.h" |
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static int midi_open(struct snd_rawmidi_substream *substream) |
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{ |
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struct snd_dg00x *dg00x = substream->rmidi->private_data; |
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int err; |
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err = snd_dg00x_stream_lock_try(dg00x); |
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if (err < 0) |
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return err; |
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mutex_lock(&dg00x->mutex); |
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err = snd_dg00x_stream_reserve_duplex(dg00x, 0, 0, 0); |
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if (err >= 0) { |
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++dg00x->substreams_counter; |
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err = snd_dg00x_stream_start_duplex(dg00x); |
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if (err < 0) |
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--dg00x->substreams_counter; |
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} |
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mutex_unlock(&dg00x->mutex); |
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if (err < 0) |
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snd_dg00x_stream_lock_release(dg00x); |
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return err; |
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} |
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static int midi_close(struct snd_rawmidi_substream *substream) |
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{ |
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struct snd_dg00x *dg00x = substream->rmidi->private_data; |
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mutex_lock(&dg00x->mutex); |
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--dg00x->substreams_counter; |
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snd_dg00x_stream_stop_duplex(dg00x); |
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mutex_unlock(&dg00x->mutex); |
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snd_dg00x_stream_lock_release(dg00x); |
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return 0; |
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} |
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static void midi_capture_trigger(struct snd_rawmidi_substream *substream, |
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int up) |
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{ |
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struct snd_dg00x *dg00x = substream->rmidi->private_data; |
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unsigned int port; |
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unsigned long flags; |
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if (substream->rmidi->device == 0) |
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port = substream->number; |
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else |
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port = 2; |
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spin_lock_irqsave(&dg00x->lock, flags); |
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if (up) |
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amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream); |
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else |
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amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL); |
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spin_unlock_irqrestore(&dg00x->lock, flags); |
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} |
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static void midi_playback_trigger(struct snd_rawmidi_substream *substream, |
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int up) |
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{ |
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struct snd_dg00x *dg00x = substream->rmidi->private_data; |
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unsigned int port; |
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unsigned long flags; |
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if (substream->rmidi->device == 0) |
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port = substream->number; |
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else |
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port = 2; |
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spin_lock_irqsave(&dg00x->lock, flags); |
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if (up) |
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amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream); |
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else |
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amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL); |
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spin_unlock_irqrestore(&dg00x->lock, flags); |
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} |
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static void set_substream_names(struct snd_dg00x *dg00x, |
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struct snd_rawmidi *rmidi, bool is_console) |
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{ |
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struct snd_rawmidi_substream *subs; |
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struct snd_rawmidi_str *str; |
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int i; |
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for (i = 0; i < 2; ++i) { |
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str = &rmidi->streams[i]; |
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list_for_each_entry(subs, &str->substreams, list) { |
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if (!is_console) { |
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snprintf(subs->name, sizeof(subs->name), |
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"%s MIDI %d", |
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dg00x->card->shortname, |
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subs->number + 1); |
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} else { |
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snprintf(subs->name, sizeof(subs->name), |
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"%s control", |
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dg00x->card->shortname); |
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} |
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} |
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} |
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} |
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static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports, |
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unsigned int in_ports, bool is_console) |
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{ |
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static const struct snd_rawmidi_ops capture_ops = { |
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.open = midi_open, |
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.close = midi_close, |
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.trigger = midi_capture_trigger, |
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}; |
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static const struct snd_rawmidi_ops playback_ops = { |
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.open = midi_open, |
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.close = midi_close, |
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.trigger = midi_playback_trigger, |
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}; |
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const char *label; |
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struct snd_rawmidi *rmidi; |
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int err; |
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/* Add physical midi ports. */ |
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err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console, |
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out_ports, in_ports, &rmidi); |
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if (err < 0) |
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return err; |
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rmidi->private_data = dg00x; |
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if (!is_console) |
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label = "%s control"; |
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else |
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label = "%s MIDI"; |
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snprintf(rmidi->name, sizeof(rmidi->name), label, |
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dg00x->card->shortname); |
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops); |
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops); |
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT | |
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SNDRV_RAWMIDI_INFO_OUTPUT | |
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SNDRV_RAWMIDI_INFO_DUPLEX; |
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set_substream_names(dg00x, rmidi, is_console); |
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return 0; |
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} |
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int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x) |
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{ |
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int err; |
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/* Add physical midi ports. */ |
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err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, |
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false); |
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if (err < 0) |
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return err; |
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if (dg00x->is_console) |
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err = add_substream_pair(dg00x, 1, 1, true); |
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return err; |
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}
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