diff options
Diffstat (limited to 'sound/firewire/motu/motu-pcm.c')
-rw-r--r-- | sound/firewire/motu/motu-pcm.c | 63 |
1 files changed, 44 insertions, 19 deletions
diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c index aa2e584da6fe..349b4d09e84f 100644 --- a/sound/firewire/motu/motu-pcm.c +++ b/sound/firewire/motu/motu-pcm.c @@ -134,8 +134,8 @@ static int pcm_open(struct snd_pcm_substream *substream) { struct snd_motu *motu = substream->private_data; const struct snd_motu_protocol *const protocol = motu->spec->protocol; + struct amdtp_domain *d = &motu->domain; enum snd_motu_clock_source src; - unsigned int rate; int err; err = snd_motu_stream_lock_try(motu); @@ -152,28 +152,51 @@ static int pcm_open(struct snd_pcm_substream *substream) if (err < 0) goto err_locked; - /* - * When source of clock is not internal or any PCM streams are running, - * available sampling rate is limited at current sampling rate. - */ err = protocol->get_clock_source(motu, &src); if (err < 0) goto err_locked; - if (src != SND_MOTU_CLOCK_SOURCE_INTERNAL || - amdtp_stream_pcm_running(&motu->tx_stream) || - amdtp_stream_pcm_running(&motu->rx_stream)) { + + // When source of clock is not internal or any stream is reserved for + // transmission of PCM frames, the available sampling rate is limited + // at current one. + if ((src != SND_MOTU_CLOCK_SOURCE_INTERNAL && + src != SND_MOTU_CLOCK_SOURCE_SPH) || + (motu->substreams_counter > 0 && d->events_per_period > 0)) { + unsigned int frames_per_period = d->events_per_period; + unsigned int frames_per_buffer = d->events_per_buffer; + unsigned int rate; + err = protocol->get_clock_rate(motu, &rate); if (err < 0) goto err_locked; + substream->runtime->hw.rate_min = rate; substream->runtime->hw.rate_max = rate; + + if (frames_per_period > 0) { + err = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, + frames_per_period, frames_per_period); + if (err < 0) { + mutex_unlock(&motu->mutex); + goto err_locked; + } + + err = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, + frames_per_buffer, frames_per_buffer); + if (err < 0) { + mutex_unlock(&motu->mutex); + goto err_locked; + } + } } snd_pcm_set_sync(substream); mutex_unlock(&motu->mutex); - return err; + return 0; err_locked: mutex_unlock(&motu->mutex); snd_motu_stream_lock_release(motu); @@ -195,16 +218,18 @@ static int pcm_hw_params(struct snd_pcm_substream *substream, struct snd_motu *motu = substream->private_data; int err; - err = snd_pcm_lib_alloc_vmalloc_buffer(substream, - params_buffer_bytes(hw_params)); + err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); if (err < 0) return err; if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { unsigned int rate = params_rate(hw_params); + unsigned int frames_per_period = params_period_size(hw_params); + unsigned int frames_per_buffer = params_buffer_size(hw_params); mutex_lock(&motu->mutex); - err = snd_motu_stream_reserve_duplex(motu, rate); + err = snd_motu_stream_reserve_duplex(motu, rate, + frames_per_period, frames_per_buffer); if (err >= 0) ++motu->substreams_counter; mutex_unlock(&motu->mutex); @@ -226,7 +251,7 @@ static int pcm_hw_free(struct snd_pcm_substream *substream) mutex_unlock(&motu->mutex); - return snd_pcm_lib_free_vmalloc_buffer(substream); + return snd_pcm_lib_free_pages(substream); } static int capture_prepare(struct snd_pcm_substream *substream) @@ -295,27 +320,27 @@ static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream) { struct snd_motu *motu = substream->private_data; - return amdtp_stream_pcm_pointer(&motu->tx_stream); + return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream); } static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream) { struct snd_motu *motu = substream->private_data; - return amdtp_stream_pcm_pointer(&motu->rx_stream); + return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream); } static int capture_ack(struct snd_pcm_substream *substream) { struct snd_motu *motu = substream->private_data; - return amdtp_stream_pcm_ack(&motu->tx_stream); + return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream); } static int playback_ack(struct snd_pcm_substream *substream) { struct snd_motu *motu = substream->private_data; - return amdtp_stream_pcm_ack(&motu->rx_stream); + return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream); } int snd_motu_create_pcm_devices(struct snd_motu *motu) @@ -330,7 +355,6 @@ int snd_motu_create_pcm_devices(struct snd_motu *motu) .trigger = capture_trigger, .pointer = capture_pointer, .ack = capture_ack, - .page = snd_pcm_lib_get_vmalloc_page, }; static const struct snd_pcm_ops playback_ops = { .open = pcm_open, @@ -342,7 +366,6 @@ int snd_motu_create_pcm_devices(struct snd_motu *motu) .trigger = playback_trigger, .pointer = playback_pointer, .ack = playback_ack, - .page = snd_pcm_lib_get_vmalloc_page, }; struct snd_pcm *pcm; int err; @@ -355,6 +378,8 @@ int snd_motu_create_pcm_devices(struct snd_motu *motu) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC, + NULL, 0, 0); return 0; } |