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-rw-r--r--sound/firewire/tascam/tascam-pcm.c12
-rw-r--r--sound/firewire/tascam/tascam-stream.c5
-rw-r--r--sound/firewire/tascam/tascam.h3
3 files changed, 16 insertions, 4 deletions
diff --git a/sound/firewire/tascam/tascam-pcm.c b/sound/firewire/tascam/tascam-pcm.c
index 6cd3a420fbdf..b18664fdf955 100644
--- a/sound/firewire/tascam/tascam-pcm.c
+++ b/sound/firewire/tascam/tascam-pcm.c
@@ -66,6 +66,7 @@ static int pcm_open(struct snd_pcm_substream *substream)
// at current one.
if (clock != SND_TSCM_CLOCK_INTERNAL || tscm->substreams_counter > 0) {
unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
unsigned int rate;
err = snd_tscm_stream_get_rate(tscm, &rate);
@@ -83,6 +84,14 @@ static int pcm_open(struct snd_pcm_substream *substream)
mutex_unlock(&tscm->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(&tscm->mutex);
+ goto err_locked;
+ }
}
mutex_unlock(&tscm->mutex);
@@ -118,10 +127,11 @@ static int pcm_hw_params(struct snd_pcm_substream *substream,
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(&tscm->mutex);
err = snd_tscm_stream_reserve_duplex(tscm, rate,
- frames_per_period);
+ frames_per_period, frames_per_buffer);
if (err >= 0)
++tscm->substreams_counter;
mutex_unlock(&tscm->mutex);
diff --git a/sound/firewire/tascam/tascam-stream.c b/sound/firewire/tascam/tascam-stream.c
index 1e4d44ed8bed..a9b3b7eb6d21 100644
--- a/sound/firewire/tascam/tascam-stream.c
+++ b/sound/firewire/tascam/tascam-stream.c
@@ -384,7 +384,8 @@ void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm)
}
int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
- unsigned int frames_per_period)
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer)
{
unsigned int curr_rate;
int err;
@@ -416,7 +417,7 @@ int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&tscm->domain,
- frames_per_period, 0);
+ frames_per_period, frames_per_buffer);
if (err < 0) {
fw_iso_resources_free(&tscm->tx_resources);
fw_iso_resources_free(&tscm->rx_resources);
diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h
index 32e72a25bf46..78b7a08986a1 100644
--- a/sound/firewire/tascam/tascam.h
+++ b/sound/firewire/tascam/tascam.h
@@ -169,7 +169,8 @@ int snd_tscm_stream_init_duplex(struct snd_tscm *tscm);
void snd_tscm_stream_update_duplex(struct snd_tscm *tscm);
void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm);
int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
- unsigned int frames_per_period);
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer);
int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate);
void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm);