mirror of https://gitee.com/openkylin/linux.git
ALSA: firewire-digi00x: allow user space applications to read/write MIDI messages for all ports
At a commit c5fcee0373 ("ALSA: firewire-digi00x: add MIDI operations for
MIDI control port"), I described that MIDI messages for control surface is
transferred by a different way from the messages for physical ports.
However, this is wrong. MIDI messages to/from all of MIDI ports are
transferred by isochronous packets.
This commit removes codes to transfer MIDI messages via asynchronous
transaction, from MIDI handling layer.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
Takashi Iwai
parent
8820a4cf0c
commit
0c3f15f39c
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@ -8,7 +8,7 @@
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#include "digi00x.h"
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static int midi_phys_open(struct snd_rawmidi_substream *substream)
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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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@ -27,7 +27,7 @@ static int midi_phys_open(struct snd_rawmidi_substream *substream)
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return err;
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}
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static int midi_phys_close(struct snd_rawmidi_substream *substream)
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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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@ -40,180 +40,130 @@ static int midi_phys_close(struct snd_rawmidi_substream *substream)
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return 0;
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}
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static void midi_phys_capture_trigger(struct snd_rawmidi_substream *substream,
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int up)
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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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spin_lock_irqsave(&dg00x->lock, flags);
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if (up)
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amdtp_dot_midi_trigger(&dg00x->tx_stream, substream->number,
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substream);
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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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amdtp_dot_midi_trigger(&dg00x->tx_stream, substream->number,
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NULL);
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spin_unlock_irqrestore(&dg00x->lock, flags);
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}
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static void midi_phys_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 long flags;
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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, substream->number,
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substream);
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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->rx_stream, substream->number,
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NULL);
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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 int midi_ctl_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_ctl_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_ctl_playback_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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snd_fw_async_midi_port_finish(&dg00x->out_control);
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return 0;
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}
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static void midi_ctl_capture_trigger(struct snd_rawmidi_substream *substream,
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int up)
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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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spin_lock_irqsave(&dg00x->lock, flags);
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if (up)
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dg00x->in_control = substream;
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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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dg00x->in_control = NULL;
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spin_unlock_irqrestore(&dg00x->lock, flags);
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}
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static void midi_ctl_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 long flags;
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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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snd_fw_async_midi_port_run(&dg00x->out_control, substream);
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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_midi_substream_names(struct snd_dg00x *dg00x,
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struct snd_rawmidi_str *str,
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bool is_ctl)
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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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list_for_each_entry(subs, &str->substreams, list) {
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if (!is_ctl)
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snprintf(subs->name, sizeof(subs->name),
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"%s MIDI %d",
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dg00x->card->shortname, subs->number + 1);
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else
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/* This port is for asynchronous transaction. */
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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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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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static const struct snd_rawmidi_ops phys_capture_ops = {
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.open = midi_phys_open,
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.close = midi_phys_close,
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.trigger = midi_phys_capture_trigger,
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};
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static const struct snd_rawmidi_ops phys_playback_ops = {
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.open = midi_phys_open,
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.close = midi_phys_close,
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.trigger = midi_phys_playback_trigger,
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};
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static const struct snd_rawmidi_ops ctl_capture_ops = {
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.open = midi_ctl_open,
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.close = midi_ctl_capture_close,
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.trigger = midi_ctl_capture_trigger,
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};
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static const struct snd_rawmidi_ops ctl_playback_ops = {
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.open = midi_ctl_open,
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.close = midi_ctl_playback_close,
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.trigger = midi_ctl_playback_trigger,
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};
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struct snd_rawmidi *rmidi[2];
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struct snd_rawmidi_str *str;
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unsigned int i;
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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, 0,
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DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, &rmidi[0]);
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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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snprintf(rmidi[0]->name, sizeof(rmidi[0]->name),
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"%s MIDI", dg00x->card->shortname);
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if (dg00x->is_console)
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err = add_substream_pair(dg00x, 1, 1, true);
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snd_rawmidi_set_ops(rmidi[0], SNDRV_RAWMIDI_STREAM_INPUT,
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&phys_capture_ops);
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snd_rawmidi_set_ops(rmidi[0], SNDRV_RAWMIDI_STREAM_OUTPUT,
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&phys_playback_ops);
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/* Add a pair of control midi ports. */
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err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, 1,
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1, 1, &rmidi[1]);
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if (err < 0)
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return err;
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snprintf(rmidi[1]->name, sizeof(rmidi[1]->name),
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"%s control", dg00x->card->shortname);
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snd_rawmidi_set_ops(rmidi[1], SNDRV_RAWMIDI_STREAM_INPUT,
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&ctl_capture_ops);
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snd_rawmidi_set_ops(rmidi[1], SNDRV_RAWMIDI_STREAM_OUTPUT,
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&ctl_playback_ops);
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for (i = 0; i < ARRAY_SIZE(rmidi); i++) {
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rmidi[i]->private_data = dg00x;
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rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
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str = &rmidi[i]->streams[SNDRV_RAWMIDI_STREAM_INPUT];
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set_midi_substream_names(dg00x, str, i);
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rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
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str = &rmidi[i]->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
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set_midi_substream_names(dg00x, str, i);
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rmidi[i]->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
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}
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return 0;
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return err;
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}
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