From patchwork Fri Nov 28 15:59:23 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 5404651 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id ADB829F443 for ; Fri, 28 Nov 2014 16:08:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8C644201C0 for ; Fri, 28 Nov 2014 16:08:32 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 049D02013A for ; Fri, 28 Nov 2014 16:08:31 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 119972616F3; Fri, 28 Nov 2014 17:08:30 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id C341E26056E; Fri, 28 Nov 2014 17:00:23 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 3DC2A2604E2; Fri, 28 Nov 2014 17:00:11 +0100 (CET) Received: from smtp303.phy.lolipop.jp (smtp303.phy.lolipop.jp [210.157.22.87]) by alsa0.perex.cz (Postfix) with ESMTP id D64C22604DF for ; Fri, 28 Nov 2014 16:59:51 +0100 (CET) Received: from smtp303.phy.lolipop.lan (HELO smtp303.phy.lolipop.jp) (172.17.1.87) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp303.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Sat, 29 Nov 2014 00:59:47 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp303.phy.lolipop.jp (LOLIPOP-Fsecure); Sat, 29 Nov 2014 00:59:40 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de Date: Sat, 29 Nov 2014 00:59:23 +0900 Message-Id: <1417190379-4172-15-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1417190379-4172-1-git-send-email-o-takashi@sakamocchi.jp> References: <1417190379-4172-1-git-send-email-o-takashi@sakamocchi.jp> Cc: alsa-devel@alsa-project.org, ffado-devel@lists.sourceforge.net Subject: [alsa-devel] [PATCH 14/30] ALSA: dice: Add support for MIDI capture/playback X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This commit adds a support for MIDI capture/playback When MIDI substrams already start streaming and PCM substreams are going to join at different sampling rate, streams are stopped once. Then sampling rate is changed and streams are restarted. Signed-off-by: Takashi Sakamoto --- sound/firewire/dice/Makefile | 4 +- sound/firewire/dice/dice-midi.c | 194 ++++++++++++++++++++++++++++++++++++++ sound/firewire/dice/dice-stream.c | 2 + sound/firewire/dice/dice.c | 4 + sound/firewire/dice/dice.h | 3 + 5 files changed, 205 insertions(+), 2 deletions(-) create mode 100644 sound/firewire/dice/dice-midi.c diff --git a/sound/firewire/dice/Makefile b/sound/firewire/dice/Makefile index 9a48289..9ef228e 100644 --- a/sound/firewire/dice/Makefile +++ b/sound/firewire/dice/Makefile @@ -1,3 +1,3 @@ -snd-dice-objs := dice-transaction.o dice-stream.o dice-proc.o dice-pcm.o \ - dice-hwdep.o dice.o +snd-dice-objs := dice-transaction.o dice-stream.o dice-proc.o dice-midi.o \ + dice-pcm.o dice-hwdep.o dice.o obj-m += snd-dice.o diff --git a/sound/firewire/dice/dice-midi.c b/sound/firewire/dice/dice-midi.c new file mode 100644 index 0000000..fc35055 --- /dev/null +++ b/sound/firewire/dice/dice-midi.c @@ -0,0 +1,194 @@ +/* + * dice_midi.c - a part of driver for Dice based devices + * + * Copyright (c) 2014 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ +#include "dice.h" + +static int capture_open(struct snd_rawmidi_substream *substream) +{ + struct snd_dice *dice = substream->rmidi->private_data; + int err; + + err = snd_dice_stream_lock_try(dice); + if (err < 0) + return err; + + mutex_lock(&dice->mutex); + + dice->substreams_counter++; + err = snd_dice_stream_start_duplex(dice, 0); + + mutex_unlock(&dice->mutex); + + if (err < 0) + snd_dice_stream_lock_release(dice); + + return err; +} + +static int playback_open(struct snd_rawmidi_substream *substream) +{ + struct snd_dice *dice = substream->rmidi->private_data; + int err; + + err = snd_dice_stream_lock_try(dice); + if (err < 0) + return err; + + mutex_lock(&dice->mutex); + + dice->substreams_counter++; + err = snd_dice_stream_start_duplex(dice, 0); + + mutex_unlock(&dice->mutex); + + if (err < 0) + snd_dice_stream_lock_release(dice); + + return err; +} + +static int capture_close(struct snd_rawmidi_substream *substream) +{ + struct snd_dice *dice = substream->rmidi->private_data; + + mutex_lock(&dice->mutex); + + dice->substreams_counter--; + snd_dice_stream_stop_duplex(dice); + + mutex_unlock(&dice->mutex); + + snd_dice_stream_lock_release(dice); + return 0; +} + +static int playback_close(struct snd_rawmidi_substream *substream) +{ + struct snd_dice *dice = substream->rmidi->private_data; + + mutex_lock(&dice->mutex); + + dice->substreams_counter--; + snd_dice_stream_stop_duplex(dice); + + mutex_unlock(&dice->mutex); + + snd_dice_stream_lock_release(dice); + return 0; +} + +static void capture_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_dice *dice = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&dice->lock, flags); + + if (up) + amdtp_stream_midi_trigger(&dice->tx_stream, + substrm->number, substrm); + else + amdtp_stream_midi_trigger(&dice->tx_stream, + substrm->number, NULL); + + spin_unlock_irqrestore(&dice->lock, flags); +} + +static void playback_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_dice *dice = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&dice->lock, flags); + + if (up) + amdtp_stream_midi_trigger(&dice->rx_stream, + substrm->number, substrm); + else + amdtp_stream_midi_trigger(&dice->rx_stream, + substrm->number, NULL); + + spin_unlock_irqrestore(&dice->lock, flags); +} + +static struct snd_rawmidi_ops capture_ops = { + .open = capture_open, + .close = capture_close, + .trigger = capture_trigger, +}; + +static struct snd_rawmidi_ops playback_ops = { + .open = playback_open, + .close = playback_close, + .trigger = playback_trigger, +}; + +static void set_midi_substream_names(struct snd_dice *dice, + 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", dice->card->shortname, subs->number + 1); + } +} + +int snd_dice_create_midi(struct snd_dice *dice) +{ + struct snd_rawmidi *rmidi; + struct snd_rawmidi_str *str; + unsigned int i, midi_in_ports, midi_out_ports; + int err; + + midi_in_ports = midi_out_ports = 0; + for (i = 0; i < 3; i++) { + midi_in_ports = max(dice->tx_midi_ports[i], midi_in_ports); + midi_out_ports = max(dice->rx_midi_ports[i], midi_out_ports); + } + + if (midi_in_ports + midi_out_ports == 0) + return 0; + + /* create midi ports */ + err = snd_rawmidi_new(dice->card, dice->card->driver, 0, + midi_out_ports, midi_in_ports, + &rmidi); + if (err < 0) + return err; + + snprintf(rmidi->name, sizeof(rmidi->name), + "%s MIDI", dice->card->shortname); + rmidi->private_data = dice; + + if (midi_in_ports > 0) { + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, + &capture_ops); + + str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; + + set_midi_substream_names(dice, str); + } + + if (midi_out_ports > 0) { + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, + &playback_ops); + + str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; + + set_midi_substream_names(dice, str); + } + + if ((midi_out_ports > 0) && (midi_in_ports > 0)) + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; + + return 0; +} diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index 20765a0..fa9cf76 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -218,6 +218,8 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate) "fail to get sampling rate\n"); goto end; } + if (rate == 0) + rate = curr_rate; if (rate != curr_rate) stop_stream(dice, master); diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c index 85bcfaf..90d8f40 100644 --- a/sound/firewire/dice/dice.c +++ b/sound/firewire/dice/dice.c @@ -279,6 +279,10 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id) snd_dice_create_proc(dice); + err = snd_dice_create_midi(dice); + if (err < 0) + goto error; + err = snd_dice_stream_init_duplex(dice); if (err < 0) goto error; diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h index f30326e..ecf5dc8 100644 --- a/sound/firewire/dice/dice.h +++ b/sound/firewire/dice/dice.h @@ -32,6 +32,7 @@ #include #include #include +#include #include "../amdtp.h" #include "../iso-resources.h" @@ -183,4 +184,6 @@ int snd_dice_create_hwdep(struct snd_dice *dice); void snd_dice_create_proc(struct snd_dice *dice); +int snd_dice_create_midi(struct snd_dice *dice); + #endif