From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Sakamoto Subject: [PATCH v2 04/13] ALSA: dice: cache stream formats at current mode of sampling transmission frequency Date: Sun, 29 Apr 2018 15:50:23 +0900 Message-ID: <20180429065032.13869-5-o-takashi@sakamocchi.jp> References: <20180429065032.13869-1-o-takashi@sakamocchi.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pg0-f66.google.com (mail-pg0-f66.google.com [74.125.83.66]) by alsa0.perex.cz (Postfix) with ESMTP id 09952266F44 for ; Sun, 29 Apr 2018 08:51:10 +0200 (CEST) Received: by mail-pg0-f66.google.com with SMTP id a13-v6so4312061pgu.4 for ; Sat, 28 Apr 2018 23:51:10 -0700 (PDT) In-Reply-To: <20180429065032.13869-1-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 Cc: alsa-devel@alsa-project.org, ffado-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org In former commits, proxy structure get members for cache of stream formats. This commit fills the cache with stream formats at current mode of sampling transmission frequency. Signed-off-by: Takashi Sakamoto --- sound/firewire/dice/dice-stream.c | 76 +++++++++++++++++++++++++++++++++++++++ sound/firewire/dice/dice.c | 4 +++ sound/firewire/dice/dice.h | 3 ++ 3 files changed, 83 insertions(+) diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index 928a255bfc35..2a9f0cd994a5 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -30,6 +30,24 @@ const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT] = { [6] = 192000, }; +int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate, + unsigned int *mode) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(snd_dice_rates); i++) { + if (!(dice->clock_caps & BIT(i))) + continue; + if (snd_dice_rates[i] != rate) + continue; + + *mode = (i - 1) / 2; + return 0; + } + + return -EINVAL; +} + /* * This operation has an effect to synchronize GLOBAL_STATUS/GLOBAL_SAMPLE_RATE * to GLOBAL_STATUS. Especially, just after powering on, these are different. @@ -484,6 +502,64 @@ void snd_dice_stream_update_duplex(struct snd_dice *dice) } } +int snd_dice_stream_detect_current_formats(struct snd_dice *dice) +{ + unsigned int rate; + unsigned int mode; + __be32 reg[2]; + struct reg_params tx_params, rx_params; + int i; + int err; + + /* + * Available stream format is restricted at current mode of sampling + * clock. + */ + err = snd_dice_transaction_get_rate(dice, &rate); + if (err < 0) + return err; + + err = snd_dice_stream_get_rate_mode(dice, rate, &mode); + if (err < 0) + return err; + + /* + * Just after owning the unit (GLOBAL_OWNER), the unit can return + * invalid stream formats. Selecting clock parameters have an effect + * for the unit to refine it. + */ + err = ensure_phase_lock(dice); + if (err < 0) + return err; + + err = get_register_params(dice, &tx_params, &rx_params); + if (err < 0) + return err; + + for (i = 0; i < tx_params.count; ++i) { + err = snd_dice_transaction_read_tx(dice, + tx_params.size * i + TX_NUMBER_AUDIO, + reg, sizeof(reg)); + if (err < 0) + return err; + dice->tx_pcm_chs[i][mode] = be32_to_cpu(reg[0]); + dice->tx_midi_ports[i] = max_t(unsigned int, + be32_to_cpu(reg[1]), dice->tx_midi_ports[i]); + } + for (i = 0; i < rx_params.count; ++i) { + err = snd_dice_transaction_read_rx(dice, + rx_params.size * i + RX_NUMBER_AUDIO, + reg, sizeof(reg)); + if (err < 0) + return err; + dice->rx_pcm_chs[i][mode] = be32_to_cpu(reg[0]); + dice->rx_midi_ports[i] = max_t(unsigned int, + be32_to_cpu(reg[1]), dice->rx_midi_ports[i]); + } + + return 0; +} + static void dice_lock_changed(struct snd_dice *dice) { dice->dev_lock_changed = true; diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c index 96bb01b6b751..002f3f3cbc6a 100644 --- a/sound/firewire/dice/dice.c +++ b/sound/firewire/dice/dice.c @@ -199,6 +199,10 @@ static void do_registration(struct work_struct *work) dice_card_strings(dice); + err = snd_dice_stream_detect_current_formats(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 8112927999a1..593d998a661a 100644 --- a/sound/firewire/dice/dice.h +++ b/sound/firewire/dice/dice.h @@ -194,11 +194,14 @@ void snd_dice_transaction_destroy(struct snd_dice *dice); #define SND_DICE_RATES_COUNT 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_duplex(struct snd_dice *dice, unsigned int rate); void snd_dice_stream_stop_duplex(struct snd_dice *dice); int snd_dice_stream_init_duplex(struct snd_dice *dice); void snd_dice_stream_destroy_duplex(struct snd_dice *dice); void snd_dice_stream_update_duplex(struct snd_dice *dice); +int snd_dice_stream_detect_current_formats(struct snd_dice *dice); int snd_dice_stream_lock_try(struct snd_dice *dice); void snd_dice_stream_lock_release(struct snd_dice *dice); -- 2.14.1