ALSA: fireworks: register the size of PCM period to AMDTP domain

This commit is a preparation to share the size of PCM period between
PCM substreams on AMDTP streams in the same domain. At this time,
the size of PCM period in PCM substream which starts AMDTP streams in the
same domain is recorded.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20191007110532.30270-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h
index 4cda297..fc5f945 100644 (file)
--- a/sound/firewire/fireworks/fireworks.h
+++ b/sound/firewire/fireworks/fireworks.h
@@ -207,7 +207,8 @@ int snd_efw_command_get_sampling_rate(struct snd_efw *efw, unsigned int *rate);
 int snd_efw_command_set_sampling_rate(struct snd_efw *efw, unsigned int rate);
 
 int snd_efw_stream_init_duplex(struct snd_efw *efw);
-int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate);
+int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate,
+                                 unsigned int frames_per_period);
 int snd_efw_stream_start_duplex(struct snd_efw *efw);
 void snd_efw_stream_stop_duplex(struct snd_efw *efw);
 void snd_efw_stream_update_duplex(struct snd_efw *efw);

diff --git a/sound/firewire/fireworks/fireworks_midi.c b/sound/firewire/fireworks/fireworks_midi.c
index a9f4a96..e593f84 100644 (file)
--- a/sound/firewire/fireworks/fireworks_midi.c
+++ b/sound/firewire/fireworks/fireworks_midi.c
@@ -17,7 +17,7 @@ static int midi_open(struct snd_rawmidi_substream *substream)
                goto end;
 
        mutex_lock(&efw->mutex);
-       err = snd_efw_stream_reserve_duplex(efw, 0);
+       err = snd_efw_stream_reserve_duplex(efw, 0, 0);
        if (err >= 0) {
                ++efw->substreams_counter;
                err = snd_efw_stream_start_duplex(efw);

diff --git a/sound/firewire/fireworks/fireworks_pcm.c b/sound/firewire/fireworks/fireworks_pcm.c
index a7025dc..35fc952 100644 (file)
--- a/sound/firewire/fireworks/fireworks_pcm.c
+++ b/sound/firewire/fireworks/fireworks_pcm.c
@@ -231,9 +231,11 @@ 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);
 
                mutex_lock(&efw->mutex);
-               err = snd_efw_stream_reserve_duplex(efw, rate);
+               err = snd_efw_stream_reserve_duplex(efw, rate,
+                                                   frames_per_period);
                if (err >= 0)
                        ++efw->substreams_counter;
                mutex_unlock(&efw->mutex);

diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c
index f2de304..0787d5c 100644 (file)
--- a/sound/firewire/fireworks/fireworks_stream.c
+++ b/sound/firewire/fireworks/fireworks_stream.c
@@ -181,7 +181,8 @@ static int keep_resources(struct snd_efw *efw, struct amdtp_stream *stream,
        return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream));
 }
 
-int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate)
+int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate,
+                                 unsigned int frames_per_period)
 {
        unsigned int curr_rate;
        int err;
@@ -228,6 +229,14 @@ int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate)
                        cmp_connection_release(&efw->in_conn);
                        return err;
                }
+
+               err = amdtp_domain_set_events_per_period(&efw->domain,
+                                                        frames_per_period);
+               if (err < 0) {
+                       cmp_connection_release(&efw->in_conn);
+                       cmp_connection_release(&efw->out_conn);
+                       return err;
+               }
        }
 
        return 0;