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authorTakashi Sakamoto2014-04-25 22:45:09 +0900
committerTakashi Iwai2014-05-26 14:28:01 +0200
commita63d3ff1059a4d2236521e4fdbafabfc62b4f81a (patch)
tree4598ead1e5c0f3e3b09881d361cd892475be1b88 /sound/firewire
parent6a22683e89e2c851f754ebbec0f2a53f2967bc07 (diff)
ALSA: fireworks: Add MIDI interface
This commit adds a functionality to capture/playback MIDI messages. When no AMDTP streams are running, this driver starts AMDTP stream for MIDI stream at current sampling rate. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/Kconfig1
-rw-r--r--sound/firewire/fireworks/Makefile3
-rw-r--r--sound/firewire/fireworks/fireworks.c6
-rw-r--r--sound/firewire/fireworks/fireworks.h3
-rw-r--r--sound/firewire/fireworks/fireworks_midi.c147
5 files changed, 159 insertions, 1 deletions
diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig
index 0b85ebd60920..36a12127c53f 100644
--- a/sound/firewire/Kconfig
+++ b/sound/firewire/Kconfig
@@ -64,6 +64,7 @@ config SND_SCS1X
config SND_FIREWORKS
tristate "Echo Fireworks board module support"
select SND_FIREWIRE_LIB
+ select SND_RAWMIDI
help
Say Y here to include support for FireWire devices based
on Echo Digital Audio Fireworks board:
diff --git a/sound/firewire/fireworks/Makefile b/sound/firewire/fireworks/Makefile
index 52bd15e285b0..a2cecc6d8a4a 100644
--- a/sound/firewire/fireworks/Makefile
+++ b/sound/firewire/fireworks/Makefile
@@ -1,3 +1,4 @@
snd-fireworks-objs := fireworks_transaction.o fireworks_command.o \
- fireworks_stream.o fireworks_proc.o fireworks.o
+ fireworks_stream.o fireworks_proc.o fireworks_midi.o \
+ fireworks.o
obj-m += snd-fireworks.o
diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index 311e4a6ef0a6..9204c7c56513 100644
--- a/sound/firewire/fireworks/fireworks.c
+++ b/sound/firewire/fireworks/fireworks.c
@@ -226,6 +226,12 @@ efw_probe(struct fw_unit *unit,
snd_efw_proc_init(efw);
+ if (efw->midi_out_ports || efw->midi_in_ports) {
+ err = snd_efw_create_midi_devices(efw);
+ if (err < 0)
+ goto error;
+ }
+
err = snd_efw_stream_init_duplex(efw);
if (err < 0)
goto error;
diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h
index eef7ad89fd4e..d1819696754d 100644
--- a/sound/firewire/fireworks/fireworks.h
+++ b/sound/firewire/fireworks/fireworks.h
@@ -22,6 +22,7 @@
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/info.h>
+#include <sound/rawmidi.h>
#include "../packets-buffer.h"
#include "../iso-resources.h"
@@ -198,6 +199,8 @@ void snd_efw_stream_destroy_duplex(struct snd_efw *efw);
void snd_efw_proc_init(struct snd_efw *efw);
+int snd_efw_create_midi_devices(struct snd_efw *efw);
+
#define SND_EFW_DEV_ENTRY(vendor, model) \
{ \
.match_flags = IEEE1394_MATCH_VENDOR_ID | \
diff --git a/sound/firewire/fireworks/fireworks_midi.c b/sound/firewire/fireworks/fireworks_midi.c
new file mode 100644
index 000000000000..cbf34e99237f
--- /dev/null
+++ b/sound/firewire/fireworks/fireworks_midi.c
@@ -0,0 +1,147 @@
+/*
+ * 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;
+
+ atomic_inc(&efw->capture_substreams);
+ return snd_efw_stream_start_duplex(efw, 0);
+}
+
+static int midi_playback_open(struct snd_rawmidi_substream *substream)
+{
+ struct snd_efw *efw = substream->rmidi->private_data;
+
+ atomic_inc(&efw->playback_substreams);
+ return snd_efw_stream_start_duplex(efw, 0);
+}
+
+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);
+
+ 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);
+
+ 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;
+}