From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Sakamoto Subject: [PATCH 30/39] bebob: Add MIDI interface Date: Fri, 28 Feb 2014 12:27:43 +0900 Message-ID: <1393558072-25926-31-git-send-email-o-takashi@sakamocchi.jp> References: <1393558072-25926-1-git-send-email-o-takashi@sakamocchi.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp311.phy.lolipop.jp (smtp311.phy.lolipop.jp [210.157.22.79]) by alsa0.perex.cz (Postfix) with ESMTP id 99CB0265904 for ; Fri, 28 Feb 2014 04:28:35 +0100 (CET) In-Reply-To: <1393558072-25926-1-git-send-email-o-takashi@sakamocchi.jp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: clemens@ladisch.de, tiwai@suse.de, perex@perex.cz Cc: alsa-devel@alsa-project.org, ffado-devel@lists.sf.net List-Id: alsa-devel@alsa-project.org This commit adds a functionality to capture/playback MIDI messages. When no AMDTP streams are running, this module starts AMDTP stream at current sampling rate for MIDI stream. Signed-off-by: Takashi Sakamoto --- sound/firewire/Kconfig | 1 + sound/firewire/bebob/Makefile | 3 +- sound/firewire/bebob/bebob.c | 7 ++ sound/firewire/bebob/bebob.h | 3 + sound/firewire/bebob/bebob_midi.c | 148 ++++++++++++++++++++++++++++++++++++++ 5 files changed, 161 insertions(+), 1 deletion(-) create mode 100644 sound/firewire/bebob/bebob_midi.c diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig index 9027b23..8081ca1 100644 --- a/sound/firewire/Kconfig +++ b/sound/firewire/Kconfig @@ -82,6 +82,7 @@ config SND_FIREWORKS config SND_BEBOB tristate "BridgeCo DM1000/1500 with BeBoB firmware" select SND_FIREWIRE_LIB + select SND_RAWMIDI help Say Y here to include support for FireWire devices based on BridgeCo DM1000/1500 with BeBoB firmware: diff --git a/sound/firewire/bebob/Makefile b/sound/firewire/bebob/Makefile index 757c40e..1e39e59 100644 --- a/sound/firewire/bebob/Makefile +++ b/sound/firewire/bebob/Makefile @@ -1,2 +1,3 @@ -snd-bebob-objs := bebob_command.o bebob_stream.o bebob_proc.o bebob.o +snd-bebob-objs := bebob_command.o bebob_stream.o bebob_proc.o bebob_midi.o \ + bebob.o obj-m += snd-bebob.o diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c index 81d41b1..dbfbe89 100644 --- a/sound/firewire/bebob/bebob.c +++ b/sound/firewire/bebob/bebob.c @@ -167,6 +167,13 @@ bebob_probe(struct fw_unit *unit, snd_bebob_proc_init(bebob); + if ((bebob->midi_input_ports > 0) || + (bebob->midi_output_ports > 0)) { + err = snd_bebob_create_midi_devices(bebob); + if (err < 0) + goto error; + } + err = snd_card_register(card); if (err < 0) { snd_card_free(card); diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h index 83ee15a..1e1db6c 100644 --- a/sound/firewire/bebob/bebob.h +++ b/sound/firewire/bebob/bebob.h @@ -21,6 +21,7 @@ #include #include #include +#include #include "../lib.h" #include "../fcp.h" @@ -178,6 +179,8 @@ void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob); void snd_bebob_proc_init(struct snd_bebob *bebob); +int snd_bebob_create_midi_devices(struct snd_bebob *bebob); + #define SND_BEBOB_DEV_ENTRY(vendor, model) \ { \ .match_flags = IEEE1394_MATCH_VENDOR_ID | \ diff --git a/sound/firewire/bebob/bebob_midi.c b/sound/firewire/bebob/bebob_midi.c new file mode 100644 index 0000000..9312b34 --- /dev/null +++ b/sound/firewire/bebob/bebob_midi.c @@ -0,0 +1,148 @@ +/* + * bebob_midi.c - a part of driver for BeBoB based devices + * + * Copyright (c) 2013 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; + + bebob->capture_substreams++; + return snd_bebob_stream_start_duplex(bebob, &bebob->tx_stream, 0); +} + +static int midi_playback_open(struct snd_rawmidi_substream *substream) +{ + struct snd_bebob *bebob = substream->rmidi->private_data; + + bebob->playback_substreams++; + return snd_bebob_stream_start_duplex(bebob, &bebob->rx_stream, 0); +} + +static int midi_capture_close(struct snd_rawmidi_substream *substream) +{ + struct snd_bebob *bebob = substream->rmidi->private_data; + + bebob->capture_substreams--; + snd_bebob_stream_stop_duplex(bebob); + + return 0; +} + +static int midi_playback_close(struct snd_rawmidi_substream *substream) +{ + struct snd_bebob *bebob = substream->rmidi->private_data; + + bebob->playback_substreams--; + snd_bebob_stream_stop_duplex(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; +} -- 1.8.3.2