Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / firewire / bebob / bebob_midi.c

diff --git a/kernel/sound/firewire/bebob/bebob_midi.c b/kernel/sound/firewire/bebob/bebob_midi.c
new file mode 100644 (file)
index 0000000..63343d5
--- /dev/null
+++ b/kernel/sound/firewire/bebob/bebob_midi.c
@@ -0,0 +1,168 @@
+/*
+ * bebob_midi.c - a part of driver for BeBoB based devices
+ *
+ * Copyright (c) 2013-2014 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "bebob.h"
+
+static int midi_capture_open(struct snd_rawmidi_substream *substream)
+{
+       struct snd_bebob *bebob = substream->rmidi->private_data;
+       int err;
+
+       err = snd_bebob_stream_lock_try(bebob);
+       if (err < 0)
+               goto end;
+
+       atomic_inc(&bebob->capture_substreams);
+       err = snd_bebob_stream_start_duplex(bebob, 0);
+       if (err < 0)
+               snd_bebob_stream_lock_release(bebob);
+end:
+       return err;
+}
+
+static int midi_playback_open(struct snd_rawmidi_substream *substream)
+{
+       struct snd_bebob *bebob = substream->rmidi->private_data;
+       int err;
+
+       err = snd_bebob_stream_lock_try(bebob);
+       if (err < 0)
+               goto end;
+
+       atomic_inc(&bebob->playback_substreams);
+       err = snd_bebob_stream_start_duplex(bebob, 0);
+       if (err < 0)
+               snd_bebob_stream_lock_release(bebob);
+end:
+       return err;
+}
+
+static int midi_capture_close(struct snd_rawmidi_substream *substream)
+{
+       struct snd_bebob *bebob = substream->rmidi->private_data;
+
+       atomic_dec(&bebob->capture_substreams);
+       snd_bebob_stream_stop_duplex(bebob);
+
+       snd_bebob_stream_lock_release(bebob);
+       return 0;
+}
+
+static int midi_playback_close(struct snd_rawmidi_substream *substream)
+{
+       struct snd_bebob *bebob = substream->rmidi->private_data;
+
+       atomic_dec(&bebob->playback_substreams);
+       snd_bebob_stream_stop_duplex(bebob);
+
+       snd_bebob_stream_lock_release(bebob);
+       return 0;
+}
+
+static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+       struct snd_bebob *bebob = substrm->rmidi->private_data;
+       unsigned long flags;
+
+       spin_lock_irqsave(&bebob->lock, flags);
+
+       if (up)
+               amdtp_stream_midi_trigger(&bebob->tx_stream,
+                                         substrm->number, substrm);
+       else
+               amdtp_stream_midi_trigger(&bebob->tx_stream,
+                                         substrm->number, NULL);
+
+       spin_unlock_irqrestore(&bebob->lock, flags);
+}
+
+static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+       struct snd_bebob *bebob = substrm->rmidi->private_data;
+       unsigned long flags;
+
+       spin_lock_irqsave(&bebob->lock, flags);
+
+       if (up)
+               amdtp_stream_midi_trigger(&bebob->rx_stream,
+                                         substrm->number, substrm);
+       else
+               amdtp_stream_midi_trigger(&bebob->rx_stream,
+                                         substrm->number, NULL);
+
+       spin_unlock_irqrestore(&bebob->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_bebob *bebob,
+                                    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",
+                        bebob->card->shortname, subs->number + 1);
+       }
+}
+
+int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
+{
+       struct snd_rawmidi *rmidi;
+       struct snd_rawmidi_str *str;
+       int err;
+
+       /* create midi ports */
+       err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
+                             bebob->midi_output_ports, bebob->midi_input_ports,
+                             &rmidi);
+       if (err < 0)
+               return err;
+
+       snprintf(rmidi->name, sizeof(rmidi->name),
+                "%s MIDI", bebob->card->shortname);
+       rmidi->private_data = bebob;
+
+       if (bebob->midi_input_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(bebob, str);
+       }
+
+       if (bebob->midi_output_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(bebob, str);
+       }
+
+       if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
+               rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+
+       return 0;
+}