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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2015-10-31 02:43:15 +0900
committerTakashi Iwai <tiwai@suse.de>2015-10-30 19:34:32 +0100
commitc5fcee0373b390ab8508022951eabd0bd0e06a48 (patch)
treef69b1e28567a4f8b99c76872dbb258ca7ea5b2c5 /sound
parent5918f962207329089371d87adbd033830d3f5cf5 (diff)
downloadlinux-c5fcee0373b390ab8508022951eabd0bd0e06a48.tar.gz
ALSA: firewire-digi00x: add MIDI operations for MIDI control port
Digi 002/003 family has two types of MIDI port; one is for physical MIDI port and another is for MIDI control message. The former is transferred in isochronous packet, and the latter is transferred by asynchronous transaction. These transmission mechanisms are completely different, while current ALSA digi00x driver defines a set of operations for them with several condition statements. As a result, codes for the operation are messy. This commit adds a set of MIDI operation for control MIDI ports. In later commit, it's applied as an operation for ALSA rawmidi character device. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/firewire/digi00x/digi00x-midi.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/sound/firewire/digi00x/digi00x-midi.c b/sound/firewire/digi00x/digi00x-midi.c
index 1d649e3975a0..527f4b31f5c6 100644
--- a/sound/firewire/digi00x/digi00x-midi.c
+++ b/sound/firewire/digi00x/digi00x-midi.c
@@ -113,6 +113,69 @@ static struct snd_rawmidi_ops midi_phys_playback_ops = {
.trigger = midi_phys_playback_trigger,
};
+static int midi_ctl_open(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_ctl_capture_close(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_ctl_playback_close(struct snd_rawmidi_substream *substream)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+
+ snd_fw_async_midi_port_finish(&dg00x->out_control);
+
+ return 0;
+}
+
+static void midi_ctl_capture_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ dg00x->in_control = substream;
+ else
+ dg00x->in_control = NULL;
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static void midi_ctl_playback_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_dg00x *dg00x = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dg00x->lock, flags);
+
+ if (up)
+ snd_fw_async_midi_port_run(&dg00x->out_control, substream);
+
+ spin_unlock_irqrestore(&dg00x->lock, flags);
+}
+
+static struct snd_rawmidi_ops midi_ctl_capture_ops = {
+ .open = midi_ctl_open,
+ .close = midi_ctl_capture_close,
+ .trigger = midi_ctl_capture_trigger,
+};
+
+static struct snd_rawmidi_ops midi_ctl_playback_ops = {
+ .open = midi_ctl_open,
+ .close = midi_ctl_playback_close,
+ .trigger = midi_ctl_playback_trigger,
+};
+
static void set_midi_substream_names(struct snd_dg00x *dg00x,
struct snd_rawmidi_str *str)
{