diff options
Diffstat (limited to 'sound/firewire/bebob/bebob_pcm.c')
-rw-r--r-- | sound/firewire/bebob/bebob_pcm.c | 80 |
1 files changed, 54 insertions, 26 deletions
diff --git a/sound/firewire/bebob/bebob_pcm.c b/sound/firewire/bebob/bebob_pcm.c index 0fb9eed46837..d4edd06d32cf 100644 --- a/sound/firewire/bebob/bebob_pcm.c +++ b/sound/firewire/bebob/bebob_pcm.c @@ -129,18 +129,17 @@ end: return err; } -static int -pcm_open(struct snd_pcm_substream *substream) +static int pcm_open(struct snd_pcm_substream *substream) { struct snd_bebob *bebob = substream->private_data; const struct snd_bebob_rate_spec *spec = bebob->spec->rate; - unsigned int sampling_rate; + struct amdtp_domain *d = &bebob->domain; enum snd_bebob_clock_type src; int err; err = snd_bebob_stream_lock_try(bebob); if (err < 0) - goto end; + return err; err = pcm_init_hw_params(bebob, substream); if (err < 0) @@ -150,15 +149,20 @@ pcm_open(struct snd_pcm_substream *substream) if (err < 0) goto err_locked; - /* - * When source of clock is internal or any PCM stream are running, - * the available sampling rate is limited at current sampling rate. - */ + mutex_lock(&bebob->mutex); + + // 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_BEBOB_CLOCK_TYPE_EXTERNAL || - amdtp_stream_pcm_running(&bebob->tx_stream) || - amdtp_stream_pcm_running(&bebob->rx_stream)) { + (bebob->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 sampling_rate; + err = spec->get(bebob, &sampling_rate); if (err < 0) { + mutex_unlock(&bebob->mutex); dev_err(&bebob->unit->device, "fail to get sampling rate: %d\n", err); goto err_locked; @@ -166,11 +170,31 @@ pcm_open(struct snd_pcm_substream *substream) substream->runtime->hw.rate_min = sampling_rate; substream->runtime->hw.rate_max = sampling_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(&bebob->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(&bebob->mutex); + goto err_locked; + } + } } + mutex_unlock(&bebob->mutex); + snd_pcm_set_sync(substream); -end: - return err; + + return 0; err_locked: snd_bebob_stream_lock_release(bebob); return err; @@ -190,16 +214,18 @@ static int pcm_hw_params(struct snd_pcm_substream *substream, struct snd_bebob *bebob = 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(&bebob->mutex); - err = snd_bebob_stream_reserve_duplex(bebob, rate); + err = snd_bebob_stream_reserve_duplex(bebob, rate, + frames_per_period, frames_per_buffer); if (err >= 0) ++bebob->substreams_counter; mutex_unlock(&bebob->mutex); @@ -221,7 +247,7 @@ static int pcm_hw_free(struct snd_pcm_substream *substream) mutex_unlock(&bebob->mutex); - return snd_pcm_lib_free_vmalloc_buffer(substream); + return snd_pcm_lib_free_pages(substream); } static int @@ -286,31 +312,33 @@ pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) return 0; } -static snd_pcm_uframes_t -pcm_capture_pointer(struct snd_pcm_substream *sbstrm) +static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) { struct snd_bebob *bebob = sbstrm->private_data; - return amdtp_stream_pcm_pointer(&bebob->tx_stream); + + return amdtp_domain_stream_pcm_pointer(&bebob->domain, + &bebob->tx_stream); } -static snd_pcm_uframes_t -pcm_playback_pointer(struct snd_pcm_substream *sbstrm) +static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) { struct snd_bebob *bebob = sbstrm->private_data; - return amdtp_stream_pcm_pointer(&bebob->rx_stream); + + return amdtp_domain_stream_pcm_pointer(&bebob->domain, + &bebob->rx_stream); } static int pcm_capture_ack(struct snd_pcm_substream *substream) { struct snd_bebob *bebob = substream->private_data; - return amdtp_stream_pcm_ack(&bebob->tx_stream); + return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->tx_stream); } static int pcm_playback_ack(struct snd_pcm_substream *substream) { struct snd_bebob *bebob = substream->private_data; - return amdtp_stream_pcm_ack(&bebob->rx_stream); + return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->rx_stream); } int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) @@ -325,7 +353,6 @@ int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) .trigger = pcm_capture_trigger, .pointer = pcm_capture_pointer, .ack = pcm_capture_ack, - .page = snd_pcm_lib_get_vmalloc_page, }; static const struct snd_pcm_ops playback_ops = { .open = pcm_open, @@ -337,7 +364,6 @@ int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) .trigger = pcm_playback_trigger, .pointer = pcm_playback_pointer, .ack = pcm_playback_ack, - .page = snd_pcm_lib_get_vmalloc_page, }; struct snd_pcm *pcm; int err; @@ -351,6 +377,8 @@ int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) "%s PCM", bebob->card->shortname); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC, + NULL, 0, 0); end: return err; } |