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 o-takashi@sakamocchi.jp --- sound/firewire/dice/dice-stream.c | 86 +++++++++++++++++++++++++++++++++++++++ sound/firewire/dice/dice.c | 4 ++ sound/firewire/dice/dice.h | 3 ++ 3 files changed, 93 insertions(+)
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index 928a255bfc35..f8bfe287bd02 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -30,6 +30,34 @@ 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, + enum snd_dice_rate_mode *mode) +{ + /* Corresponding to each entry in snd_dice_rates. */ + static const enum snd_dice_rate_mode modes[] = { + [0] = SND_DICE_RATE_MODE_LOW, + [1] = SND_DICE_RATE_MODE_LOW, + [2] = SND_DICE_RATE_MODE_LOW, + [3] = SND_DICE_RATE_MODE_MIDDLE, + [4] = SND_DICE_RATE_MODE_MIDDLE, + [5] = SND_DICE_RATE_MODE_HIGH, + [6] = SND_DICE_RATE_MODE_HIGH, + }; + 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 = modes[i]; + 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 +512,64 @@ void snd_dice_stream_update_duplex(struct snd_dice *dice) } }
+int snd_dice_stream_detect_current_formats(struct snd_dice *dice) +{ + unsigned int rate; + enum snd_dice_rate_mode 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 8f68976930c5..0c044f28b9e7 100644 --- a/sound/firewire/dice/dice.h +++ b/sound/firewire/dice/dice.h @@ -201,11 +201,14 @@ 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, + enum snd_dice_rate_mode *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);