From patchwork Sun Dec 7 13:18:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 5451741 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 4D9529F1C5 for ; Sun, 7 Dec 2014 13:21:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 13CBC2015A for ; Sun, 7 Dec 2014 13:21:56 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 6A61E20142 for ; Sun, 7 Dec 2014 13:21:54 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 8E287265171; Sun, 7 Dec 2014 14:21:53 +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 B4EDC2606B2; Sun, 7 Dec 2014 14:19:28 +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 9DF4E26069E; Sun, 7 Dec 2014 14:19:25 +0100 (CET) Received: from smtp311.phy.lolipop.jp (smtp311.phy.lolipop.jp [210.157.22.79]) by alsa0.perex.cz (Postfix) with ESMTP id F21CB260669 for ; Sun, 7 Dec 2014 14:19:14 +0100 (CET) Received: from smtp311.phy.lolipop.lan (HELO smtp311.phy.lolipop.jp) (172.17.1.11) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp311.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Sun, 07 Dec 2014 22:19:12 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp311.phy.lolipop.jp (LOLIPOP-Fsecure); Sun, 07 Dec 2014 22:19:09 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de Date: Sun, 7 Dec 2014 22:18:54 +0900 Message-Id: <1417958348-30333-2-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1417958348-30333-1-git-send-email-o-takashi@sakamocchi.jp> References: <1417958348-30333-1-git-send-email-o-takashi@sakamocchi.jp> Cc: alsa-devel@alsa-project.org, ffado-devel@lists.sourceforge.net Subject: [alsa-devel] [PATCH 01/15] ALSA: dice: Change the way to start stream 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 Streaming functionality can start streams when rate is given but currently some codes are in PCM functionality. This commit changes the way to start stream and add some arrangement to make it easy to understand the way. Signed-off-by: Takashi Sakamoto --- sound/firewire/dice/dice-pcm.c | 75 ++------------- sound/firewire/dice/dice-stream.c | 191 +++++++++++++++++++++++++++----------- sound/firewire/dice/dice.c | 4 - sound/firewire/dice/dice.h | 4 +- 4 files changed, 143 insertions(+), 131 deletions(-) diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c index 2e531bd..b185391 100644 --- a/sound/firewire/dice/dice-pcm.c +++ b/sound/firewire/dice/dice-pcm.c @@ -169,65 +169,11 @@ static int playback_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { struct snd_dice *dice = substream->private_data; - unsigned int mode, rate, channels, i; - int err; - - mutex_lock(&dice->mutex); - snd_dice_stream_stop(dice); - mutex_unlock(&dice->mutex); - - err = snd_pcm_lib_alloc_vmalloc_buffer(substream, - params_buffer_bytes(hw_params)); - if (err < 0) - return err; - - rate = params_rate(hw_params); - err = snd_dice_transaction_set_rate(dice, rate); - if (err < 0) - return err; - - if (snd_dice_stream_get_rate_mode(dice, rate, &mode) < 0) - return err; - - /* - * At 176.4/192.0 kHz, Dice has a quirk to transfer two PCM frames in - * one data block of AMDTP packet. Thus sampling transfer frequency is - * a half of PCM sampling frequency, i.e. PCM frames at 192.0 kHz are - * transferred on AMDTP packets at 96 kHz. Two successive samples of a - * channel are stored consecutively in the packet. This quirk is called - * as 'Dual Wire'. - * For this quirk, blocking mode is required and PCM buffer size should - * be aligned to SYT_INTERVAL. - */ - channels = params_channels(hw_params); - if (mode > 1) { - if (channels > AMDTP_MAX_CHANNELS_FOR_PCM / 2) { - err = -ENOSYS; - return err; - } - - rate /= 2; - channels *= 2; - dice->rx_stream.double_pcm_frames = true; - } else { - dice->rx_stream.double_pcm_frames = false; - } - - amdtp_stream_set_parameters(&dice->rx_stream, rate, channels, - dice->rx_midi_ports[mode]); - if (mode > 1) { - channels /= 2; - - for (i = 0; i < channels; i++) { - dice->rx_stream.pcm_positions[i] = i * 2; - dice->rx_stream.pcm_positions[i + channels] = i * 2 + 1; - } - } - amdtp_stream_set_pcm_format(&dice->rx_stream, params_format(hw_params)); - return 0; + return snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); } static int playback_hw_free(struct snd_pcm_substream *substream) @@ -247,21 +193,12 @@ static int playback_prepare(struct snd_pcm_substream *substream) int err; mutex_lock(&dice->mutex); - - if (amdtp_streaming_error(&dice->rx_stream)) - snd_dice_stream_stop_packets(dice); - - err = snd_dice_stream_start(dice); - if (err < 0) { - mutex_unlock(&dice->mutex); - return err; - } - + err = snd_dice_stream_start(dice, substream->runtime->rate); mutex_unlock(&dice->mutex); + if (err >= 0) + amdtp_stream_pcm_prepare(&dice->rx_stream); - amdtp_stream_pcm_prepare(&dice->rx_stream); - - return 0; + return err; } static int playback_trigger(struct snd_pcm_substream *substream, int cmd) diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index 4c4c4ff..b9d7a48 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -9,6 +9,8 @@ #include "dice.h" +#define CALLBACK_TIMEOUT 200 + const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT] = { /* mode 0 */ [0] = 32000, @@ -39,83 +41,162 @@ int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate, return -EINVAL; } -int snd_dice_stream_start_packets(struct snd_dice *dice) +static void release_resources(struct snd_dice *dice) { - int err; + unsigned int channel; - if (amdtp_stream_running(&dice->rx_stream)) - return 0; - - err = amdtp_stream_start(&dice->rx_stream, dice->rx_resources.channel, - fw_parent_device(dice->unit)->max_speed); - if (err < 0) - return err; - - err = snd_dice_transaction_set_enable(dice); - if (err < 0) { - amdtp_stream_stop(&dice->rx_stream); - return err; - } + /* Reset channel number */ + channel = cpu_to_be32((u32)-1); + snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS, &channel, 4); - return 0; + fw_iso_resources_free(&dice->rx_resources); } -int snd_dice_stream_start(struct snd_dice *dice) +static int keep_resources(struct snd_dice *dice, unsigned int max_payload_bytes) { - __be32 channel; + unsigned int channel; int err; - if (!dice->rx_resources.allocated) { - err = fw_iso_resources_allocate(&dice->rx_resources, - amdtp_stream_get_max_payload(&dice->rx_stream), + err = fw_iso_resources_allocate(&dice->rx_resources, max_payload_bytes, fw_parent_device(dice->unit)->max_speed); - if (err < 0) - goto error; - - channel = cpu_to_be32(dice->rx_resources.channel); - err = snd_dice_transaction_write_tx(dice, RX_ISOCHRONOUS, - &channel, 4); - if (err < 0) - goto err_resources; - } - - err = snd_dice_stream_start_packets(dice); if (err < 0) - goto err_rx_channel; - - return 0; + goto end; -err_rx_channel: - channel = cpu_to_be32((u32)-1); - snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS, &channel, 4); -err_resources: - fw_iso_resources_free(&dice->rx_resources); -error: + /* Set channel number */ + channel = cpu_to_be32(dice->rx_resources.channel); + err = snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS, + &channel, 4); + if (err < 0) + release_resources(dice); +end: return err; } -void snd_dice_stream_stop_packets(struct snd_dice *dice) +static void stop_stream(struct snd_dice *dice) { if (!amdtp_stream_running(&dice->rx_stream)) return; - snd_dice_transaction_clear_enable(dice); + amdtp_stream_pcm_abort(&dice->rx_stream); amdtp_stream_stop(&dice->rx_stream); + release_resources(dice); } -void snd_dice_stream_stop(struct snd_dice *dice) +static int start_stream(struct snd_dice *dice, unsigned int rate) { - __be32 channel; + unsigned int i, mode, pcm_chs, midi_ports; + int err; - snd_dice_stream_stop_packets(dice); + err = snd_dice_stream_get_rate_mode(dice, rate, &mode); + if (err < 0) + goto end; - if (!dice->rx_resources.allocated) - return; + /* + * At 176.4/192.0 kHz, Dice has a quirk to transfer two PCM frames in + * one data block of AMDTP packet. Thus sampling transfer frequency is + * a half of PCM sampling frequency, i.e. PCM frames at 192.0 kHz are + * transferred on AMDTP packets at 96 kHz. Two successive samples of a + * channel are stored consecutively in the packet. This quirk is called + * as 'Dual Wire'. + * For this quirk, blocking mode is required and PCM buffer size should + * be aligned to SYT_INTERVAL. + */ + pcm_chs = dice->rx_channels[mode]; + midi_ports = dice->rx_midi_ports[mode]; + if (mode > 1) { + rate /= 2; + pcm_chs *= 2; + dice->rx_stream.double_pcm_frames = true; + } else { + dice->rx_stream.double_pcm_frames = false; + } - channel = cpu_to_be32((u32)-1); - snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS, &channel, 4); + amdtp_stream_set_parameters(&dice->rx_stream, rate, + pcm_chs, midi_ports); + if (mode > 1) { + pcm_chs /= 2; - fw_iso_resources_free(&dice->rx_resources); + for (i = 0; i < pcm_chs; i++) { + dice->rx_stream.pcm_positions[i] = i * 2; + dice->rx_stream.pcm_positions[i + pcm_chs] = i * 2 + 1; + } + } + + err = keep_resources(dice, + amdtp_stream_get_max_payload(&dice->rx_stream)); + if (err < 0) { + dev_err(&dice->unit->device, + "fail to keep isochronous resources\n"); + goto end; + } + + err = amdtp_stream_start(&dice->rx_stream, dice->rx_resources.channel, + fw_parent_device(dice->unit)->max_speed); + if (err < 0) + release_resources(dice); +end: + return err; +} + +int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate) +{ + unsigned int curr_rate; + int err; + + /* Some packet queueing errors. */ + if (amdtp_streaming_error(&dice->rx_stream)) + stop_stream(dice); + + /* Stop stream if rate is different. */ + err = snd_dice_transaction_get_rate(dice, &curr_rate); + if (err < 0) { + dev_err(&dice->unit->device, + "fail to get sampling rate\n"); + goto end; + } + if (rate != curr_rate) + stop_stream(dice); + + if (!amdtp_stream_running(&dice->rx_stream)) { + snd_dice_transaction_clear_enable(dice); + + err = snd_dice_transaction_set_rate(dice, rate); + if (err < 0) { + dev_err(&dice->unit->device, + "fail to set sampling rate\n"); + goto end; + } + + /* Start stream. */ + err = start_stream(dice, rate); + if (err < 0) { + dev_err(&dice->unit->device, + "fail to start AMDTP stream\n"); + goto end; + } + err = snd_dice_transaction_set_enable(dice); + if (err < 0) { + dev_err(&dice->unit->device, + "fail to enable interface\n"); + stop_stream(dice); + goto end; + } + + if (!amdtp_stream_wait_callback(&dice->rx_stream, + CALLBACK_TIMEOUT)) { + snd_dice_transaction_clear_enable(dice); + stop_stream(dice); + err = -ETIMEDOUT; + } + } +end: + return err; +} + +void snd_dice_stream_stop(struct snd_dice *dice) +{ + snd_dice_transaction_clear_enable(dice); + stop_stream(dice); } int snd_dice_stream_init(struct snd_dice *dice) @@ -145,8 +226,8 @@ error: void snd_dice_stream_destroy(struct snd_dice *dice) { - amdtp_stream_pcm_abort(&dice->rx_stream); - snd_dice_stream_stop(dice); + snd_dice_transaction_clear_enable(dice); + stop_stream(dice); amdtp_stream_destroy(&dice->rx_stream); fw_iso_resources_destroy(&dice->rx_resources); } @@ -163,8 +244,8 @@ void snd_dice_stream_update(struct snd_dice *dice) */ dice->global_enabled = false; - amdtp_stream_pcm_abort(&dice->rx_stream); - snd_dice_stream_stop_packets(dice); + stop_stream(dice); + fw_iso_resources_update(&dice->rx_resources); } diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c index 8e2c172..03a7988 100644 --- a/sound/firewire/dice/dice.c +++ b/sound/firewire/dice/dice.c @@ -304,12 +304,8 @@ static void dice_remove(struct fw_unit *unit) snd_card_disconnect(dice->card); - mutex_lock(&dice->mutex); - snd_dice_stream_destroy(dice); - mutex_unlock(&dice->mutex); - snd_card_free_when_closed(dice->card); } diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h index 969189a..8be530f 100644 --- a/sound/firewire/dice/dice.h +++ b/sound/firewire/dice/dice.h @@ -160,9 +160,7 @@ extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT]; int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate, unsigned int *mode); -int snd_dice_stream_start_packets(struct snd_dice *dice); -int snd_dice_stream_start(struct snd_dice *dice); -void snd_dice_stream_stop_packets(struct snd_dice *dice); +int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate); void snd_dice_stream_stop(struct snd_dice *dice); int snd_dice_stream_init(struct snd_dice *dice); void snd_dice_stream_destroy(struct snd_dice *dice);