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135 lines
3.4 KiB
135 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* tascam-midi.c - a part of driver for TASCAM FireWire series |
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* |
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* Copyright (c) 2015 Takashi Sakamoto |
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*/ |
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#include "tascam.h" |
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static int midi_capture_open(struct snd_rawmidi_substream *substream) |
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{ |
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/* Do nothing. */ |
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return 0; |
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} |
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static int midi_playback_open(struct snd_rawmidi_substream *substream) |
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{ |
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struct snd_tscm *tscm = substream->rmidi->private_data; |
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snd_fw_async_midi_port_init(&tscm->out_ports[substream->number]); |
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return 0; |
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} |
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static int midi_capture_close(struct snd_rawmidi_substream *substream) |
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{ |
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/* Do nothing. */ |
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return 0; |
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} |
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static int midi_playback_close(struct snd_rawmidi_substream *substream) |
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{ |
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return 0; |
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} |
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static void midi_playback_drain(struct snd_rawmidi_substream *substream) |
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{ |
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struct snd_tscm *tscm = substream->rmidi->private_data; |
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snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]); |
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} |
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static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) |
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{ |
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struct snd_tscm *tscm = substrm->rmidi->private_data; |
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unsigned long flags; |
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spin_lock_irqsave(&tscm->lock, flags); |
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if (up) |
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tscm->tx_midi_substreams[substrm->number] = substrm; |
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else |
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tscm->tx_midi_substreams[substrm->number] = NULL; |
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spin_unlock_irqrestore(&tscm->lock, flags); |
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} |
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static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) |
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{ |
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struct snd_tscm *tscm = substrm->rmidi->private_data; |
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unsigned long flags; |
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spin_lock_irqsave(&tscm->lock, flags); |
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if (up) |
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snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number], |
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substrm); |
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spin_unlock_irqrestore(&tscm->lock, flags); |
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} |
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int snd_tscm_create_midi_devices(struct snd_tscm *tscm) |
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{ |
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static const struct snd_rawmidi_ops capture_ops = { |
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.open = midi_capture_open, |
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.close = midi_capture_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_playback_open, |
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.close = midi_playback_close, |
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.drain = midi_playback_drain, |
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.trigger = midi_playback_trigger, |
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}; |
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struct snd_rawmidi *rmidi; |
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struct snd_rawmidi_str *stream; |
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struct snd_rawmidi_substream *subs; |
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int err; |
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err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0, |
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tscm->spec->midi_playback_ports, |
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tscm->spec->midi_capture_ports, |
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&rmidi); |
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if (err < 0) |
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return err; |
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snprintf(rmidi->name, sizeof(rmidi->name), |
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"%s MIDI", tscm->card->shortname); |
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rmidi->private_data = tscm; |
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; |
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, |
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&capture_ops); |
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stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; |
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/* Set port names for MIDI input. */ |
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list_for_each_entry(subs, &stream->substreams, list) { |
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/* TODO: support virtual MIDI ports. */ |
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if (subs->number < tscm->spec->midi_capture_ports) { |
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/* Hardware MIDI ports. */ |
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snprintf(subs->name, sizeof(subs->name), |
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"%s MIDI %d", |
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tscm->card->shortname, subs->number + 1); |
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} |
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} |
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; |
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, |
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&playback_ops); |
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stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; |
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/* Set port names for MIDI ourput. */ |
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list_for_each_entry(subs, &stream->substreams, list) { |
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if (subs->number < tscm->spec->midi_playback_ports) { |
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/* Hardware MIDI ports only. */ |
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snprintf(subs->name, sizeof(subs->name), |
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"%s MIDI %d", |
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tscm->card->shortname, subs->number + 1); |
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} |
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} |
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; |
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return 0; |
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}
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