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-rw-r--r--sound/firewire/fireface/ff-pcm.c60
-rw-r--r--sound/firewire/fireface/ff-stream.c22
-rw-r--r--sound/firewire/fireface/ff.h4
3 files changed, 67 insertions, 19 deletions
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c
index 9eab3ad283ce..4e3bd9a2bec0 100644
--- a/sound/firewire/fireface/ff-pcm.c
+++ b/sound/firewire/fireface/ff-pcm.c
@@ -139,6 +139,7 @@ static int pcm_init_hw_params(struct snd_ff *ff,
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
+ struct amdtp_domain *d = &ff->domain;
unsigned int rate;
enum snd_ff_clock_src src;
int i, err;
@@ -155,16 +156,21 @@ static int pcm_open(struct snd_pcm_substream *substream)
if (err < 0)
goto release_lock;
+ mutex_lock(&ff->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_FF_CLOCK_SRC_INTERNAL) {
for (i = 0; i < CIP_SFC_COUNT; ++i) {
if (amdtp_rate_table[i] == rate)
break;
}
- /*
- * The unit is configured at sampling frequency which packet
- * streaming engine can't support.
- */
+
+ // The unit is configured at sampling frequency which packet
+ // streaming engine can't support.
if (i >= CIP_SFC_COUNT) {
+ mutex_unlock(&ff->mutex);
err = -EIO;
goto release_lock;
}
@@ -172,14 +178,34 @@ static int pcm_open(struct snd_pcm_substream *substream)
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
} else {
- if (amdtp_stream_pcm_running(&ff->rx_stream) ||
- amdtp_stream_pcm_running(&ff->tx_stream)) {
+ if (ff->substreams_counter > 0) {
+ unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
+
rate = amdtp_rate_table[ff->rx_stream.sfc];
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
+
+ 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(&ff->mutex);
+ goto release_lock;
+ }
+
+ 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(&ff->mutex);
+ goto release_lock;
+ }
}
}
+ mutex_unlock(&ff->mutex);
+
snd_pcm_set_sync(substream);
return 0;
@@ -204,16 +230,18 @@ static int pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_ff *ff = 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(&ff->mutex);
- err = snd_ff_stream_reserve_duplex(ff, rate);
+ err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period,
+ frames_per_buffer);
if (err >= 0)
++ff->substreams_counter;
mutex_unlock(&ff->mutex);
@@ -235,7 +263,7 @@ static int pcm_hw_free(struct snd_pcm_substream *substream)
mutex_unlock(&ff->mutex);
- return snd_pcm_lib_free_vmalloc_buffer(substream);
+ return snd_pcm_lib_free_pages(substream);
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
@@ -312,28 +340,28 @@ static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_ff *ff = sbstrm->private_data;
- return amdtp_stream_pcm_pointer(&ff->tx_stream);
+ return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->tx_stream);
}
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_ff *ff = sbstrm->private_data;
- return amdtp_stream_pcm_pointer(&ff->rx_stream);
+ return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream);
}
static int pcm_capture_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
- return amdtp_stream_pcm_ack(&ff->tx_stream);
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream);
}
static int pcm_playback_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
- return amdtp_stream_pcm_ack(&ff->rx_stream);
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream);
}
int snd_ff_create_pcm_devices(struct snd_ff *ff)
@@ -348,7 +376,6 @@ int snd_ff_create_pcm_devices(struct snd_ff *ff)
.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 pcm_playback_ops = {
.open = pcm_open,
@@ -360,7 +387,6 @@ int snd_ff_create_pcm_devices(struct snd_ff *ff)
.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;
@@ -374,6 +400,8 @@ int snd_ff_create_pcm_devices(struct snd_ff *ff)
"%s PCM", ff->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
+ NULL, 0, 0);
return 0;
}
diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c
index e8e6f9fd6433..63b79c4a5405 100644
--- a/sound/firewire/fireface/ff-stream.c
+++ b/sound/firewire/fireface/ff-stream.c
@@ -106,7 +106,9 @@ void snd_ff_stream_destroy_duplex(struct snd_ff *ff)
destroy_stream(ff, &ff->tx_stream);
}
-int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate)
+int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer)
{
unsigned int curr_rate;
enum snd_ff_clock_src src;
@@ -150,6 +152,14 @@ int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate)
err = ff->spec->protocol->allocate_resources(ff, rate);
if (err < 0)
return err;
+
+ err = amdtp_domain_set_events_per_period(&ff->domain,
+ frames_per_period, frames_per_buffer);
+ if (err < 0) {
+ fw_iso_resources_free(&ff->tx_resources);
+ fw_iso_resources_free(&ff->rx_resources);
+ return err;
+ }
}
return 0;
@@ -174,6 +184,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
*/
if (!amdtp_stream_running(&ff->rx_stream)) {
int spd = fw_parent_device(ff->unit)->max_speed;
+ unsigned int ir_delay_cycle;
err = ff->spec->protocol->begin_session(ff, rate);
if (err < 0)
@@ -189,7 +200,14 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
if (err < 0)
goto error;
- err = amdtp_domain_start(&ff->domain);
+ // The device postpones start of transmission mostly for several
+ // cycles after receiving packets firstly.
+ if (ff->spec->protocol == &snd_ff_protocol_ff800)
+ ir_delay_cycle = 800; // = 100 msec
+ else
+ ir_delay_cycle = 16; // = 2 msec
+
+ err = amdtp_domain_start(&ff->domain, ir_delay_cycle);
if (err < 0)
goto error;
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
index b4c22ca6079e..dc7a20f75983 100644
--- a/sound/firewire/fireface/ff.h
+++ b/sound/firewire/fireface/ff.h
@@ -139,7 +139,9 @@ int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
enum snd_ff_stream_mode *mode);
int snd_ff_stream_init_duplex(struct snd_ff *ff);
void snd_ff_stream_destroy_duplex(struct snd_ff *ff);
-int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate);
+int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer);
int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate);
void snd_ff_stream_stop_duplex(struct snd_ff *ff);
void snd_ff_stream_update_duplex(struct snd_ff *ff);
generated by cgit (git 2.34.1) at 2025-04-23 00:40:03 +0000