diff options
Diffstat (limited to 'sound/firewire/fireworks/fireworks_midi.c')
| -rw-r--r-- | sound/firewire/fireworks/fireworks_midi.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/sound/firewire/fireworks/fireworks_midi.c b/sound/firewire/fireworks/fireworks_midi.c new file mode 100644 index 00000000000..cf9c6526043 --- /dev/null +++ b/sound/firewire/fireworks/fireworks_midi.c @@ -0,0 +1,168 @@ +/* + * fireworks_midi.c - a part of driver for Fireworks based devices + * + * Copyright (c) 2009-2010 Clemens Ladisch + * Copyright (c) 2013-2014 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ +#include "fireworks.h" + +static int midi_capture_open(struct snd_rawmidi_substream *substream) +{ + struct snd_efw *efw = substream->rmidi->private_data; + int err; + + err = snd_efw_stream_lock_try(efw); + if (err < 0) + goto end; + + atomic_inc(&efw->capture_substreams); + err = snd_efw_stream_start_duplex(efw, 0); + if (err < 0) + snd_efw_stream_lock_release(efw); + +end: + return err; +} + +static int midi_playback_open(struct snd_rawmidi_substream *substream) +{ + struct snd_efw *efw = substream->rmidi->private_data; + int err; + + err = snd_efw_stream_lock_try(efw); + if (err < 0) + goto end; + + atomic_inc(&efw->playback_substreams); + err = snd_efw_stream_start_duplex(efw, 0); + if (err < 0) + snd_efw_stream_lock_release(efw); +end: + return err; +} + +static int midi_capture_close(struct snd_rawmidi_substream *substream) +{ + struct snd_efw *efw = substream->rmidi->private_data; + + atomic_dec(&efw->capture_substreams); + snd_efw_stream_stop_duplex(efw); + + snd_efw_stream_lock_release(efw); + return 0; +} + +static int midi_playback_close(struct snd_rawmidi_substream *substream) +{ + struct snd_efw *efw = substream->rmidi->private_data; + + atomic_dec(&efw->playback_substreams); + snd_efw_stream_stop_duplex(efw); + + snd_efw_stream_lock_release(efw); + return 0; +} + +static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_efw *efw = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&efw->lock, flags); + + if (up) + amdtp_stream_midi_trigger(&efw->tx_stream, + substrm->number, substrm); + else + amdtp_stream_midi_trigger(&efw->tx_stream, + substrm->number, NULL); + + spin_unlock_irqrestore(&efw->lock, flags); +} + +static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_efw *efw = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&efw->lock, flags); + + if (up) + amdtp_stream_midi_trigger(&efw->rx_stream, + substrm->number, substrm); + else + amdtp_stream_midi_trigger(&efw->rx_stream, + substrm->number, NULL); + + spin_unlock_irqrestore(&efw->lock, flags); +} + +static struct snd_rawmidi_ops midi_capture_ops = { + .open = midi_capture_open, + .close = midi_capture_close, + .trigger = midi_capture_trigger, +}; + +static struct snd_rawmidi_ops midi_playback_ops = { + .open = midi_playback_open, + .close = midi_playback_close, + .trigger = midi_playback_trigger, +}; + +static void set_midi_substream_names(struct snd_efw *efw, + struct snd_rawmidi_str *str) +{ + struct snd_rawmidi_substream *subs; + + list_for_each_entry(subs, &str->substreams, list) { + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", efw->card->shortname, subs->number + 1); + } +} + +int snd_efw_create_midi_devices(struct snd_efw *efw) +{ + struct snd_rawmidi *rmidi; + struct snd_rawmidi_str *str; + int err; + + /* create midi ports */ + err = snd_rawmidi_new(efw->card, efw->card->driver, 0, + efw->midi_out_ports, efw->midi_in_ports, + &rmidi); + if (err < 0) + return err; + + snprintf(rmidi->name, sizeof(rmidi->name), + "%s MIDI", efw->card->shortname); + rmidi->private_data = efw; + + if (efw->midi_in_ports > 0) { + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, + &midi_capture_ops); + + str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; + + set_midi_substream_names(efw, str); + } + + if (efw->midi_out_ports > 0) { + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, + &midi_playback_ops); + + str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; + + set_midi_substream_names(efw, str); + } + + if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0)) + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; + + return 0; +} |