From patchwork Sun Oct 26 13:03:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 5154061 X-Patchwork-Delegate: tiwai@suse.de 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 028DE9F30B for ; Sun, 26 Oct 2014 13:12:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F0D2120340 for ; Sun, 26 Oct 2014 13:12:20 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 0D7D620306 for ; Sun, 26 Oct 2014 13:12:19 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 136B42612E6; Sun, 26 Oct 2014 14:12:17 +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, RCVD_IN_DNSWL_NONE, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id A4B5D2612E7; Sun, 26 Oct 2014 14:05:14 +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 575B42606AC; Sun, 26 Oct 2014 14:05:13 +0100 (CET) Received: from smtp310.phy.lolipop.jp (smtp310.phy.lolipop.jp [210.157.22.78]) by alsa0.perex.cz (Postfix) with ESMTP id 51B062606AC for ; Sun, 26 Oct 2014 14:03:59 +0100 (CET) Received: from smtp310.phy.lolipop.lan (HELO smtp310.phy.lolipop.jp) (172.17.1.10) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp310.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Sun, 26 Oct 2014 22:03:58 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp310.phy.lolipop.jp (LOLIPOP-Fsecure); Sun, 26 Oct 2014 22:03:30 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de Date: Sun, 26 Oct 2014 22:03:14 +0900 Message-Id: <1414328610-12729-14-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414328610-12729-1-git-send-email-o-takashi@sakamocchi.jp> References: <1414328610-12729-1-git-send-email-o-takashi@sakamocchi.jp> Cc: alsa-devel@alsa-project.org, ffado-devel@lists.sourceforge.net Subject: [alsa-devel] [PATCH 13/29] 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 | 176 ++++++++++++++++++++++++++++++++++++++ sound/firewire/dice/dice-stream.c | 2 + sound/firewire/dice/dice.c | 4 + sound/firewire/dice/dice.h | 3 + 5 files changed, 187 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..4f4eae7 --- /dev/null +++ b/sound/firewire/dice/dice-midi.c @@ -0,0 +1,176 @@ +/* + * 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) + goto end; + + atomic_inc(&dice->substreams_counter); + err = snd_dice_stream_start_duplex(dice, 0); + if (err < 0) + snd_dice_stream_lock_release(dice); +end: + 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) + goto end; + + atomic_inc(&dice->substreams_counter); + err = snd_dice_stream_start_duplex(dice, 0); + if (err < 0) + snd_dice_stream_lock_release(dice); +end: + return err; +} + +static int capture_close(struct snd_rawmidi_substream *substream) +{ + struct snd_dice *dice = substream->rmidi->private_data; + + atomic_dec(&dice->substreams_counter); + snd_dice_stream_stop_duplex(dice); + + 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; + + atomic_dec(&dice->substreams_counter); + snd_dice_stream_stop_duplex(dice); + + 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 bc3715b..37d1aab 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -220,6 +220,8 @@ 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 2390cc6..b6b2c92 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 8ea5cb4..dbfb988 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