diff options
Diffstat (limited to 'sound/pci/lola')
| -rw-r--r-- | sound/pci/lola/lola.h | 4 | ||||
| -rw-r--r-- | sound/pci/lola/lola_pcm.c | 49 |
2 files changed, 46 insertions, 7 deletions
diff --git a/sound/pci/lola/lola.h b/sound/pci/lola/lola.h index bc8110ff6b46..180c2c124620 100644 --- a/sound/pci/lola/lola.h +++ b/sound/pci/lola/lola.h @@ -306,6 +306,7 @@ struct lola_stream { /* flags */ unsigned int opened:1; unsigned int prepared:1; + unsigned int paused:1; unsigned int running:1; }; @@ -356,6 +357,8 @@ struct lola { /* clock */ struct lola_clock_widget clock; + int ref_count_rate; + unsigned int sample_rate; /* mixer */ struct lola_mixer_widget mixer; @@ -370,7 +373,6 @@ struct lola { unsigned int sample_rate_max; /* flags */ - unsigned int running :1; unsigned int initialized :1; unsigned int cold_reset :1; diff --git a/sound/pci/lola/lola_pcm.c b/sound/pci/lola/lola_pcm.c index 4bb5b5bd6371..6be6b7e8f567 100644 --- a/sound/pci/lola/lola_pcm.c +++ b/sound/pci/lola/lola_pcm.c @@ -126,6 +126,22 @@ static void lola_stream_reset(struct lola *chip, struct lola_stream *str) if (str->prepared) { str->prepared = 0; + if (str->paused) { + /* finish pause - prepare for a new resume + * move this code later to trigger function, + * as this is also needed when resuming from pause + */ + str->paused = 0; + /* implement later loop for all streams */ + lola_stream_wait_for_fifo(chip, str, false); + lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRUN | + LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); + /* end loop */ + /* implement later once more loop for all streams */ + lola_stream_wait_for_fifo(chip, str, true); + /* end loop */ + /* end finish pause */ + } lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); lola_stream_wait_for_fifo(chip, str, false); @@ -178,12 +194,17 @@ static int lola_pcm_open(struct snd_pcm_substream *substream) str->opened = 1; runtime->hw = lola_pcm_hw; runtime->hw.channels_max = pcm->num_streams - str->index; - runtime->hw.rate_min = chip->sample_rate_min; - runtime->hw.rate_max = chip->sample_rate_max; + if (chip->sample_rate) { + /* sample rate is locked */ + runtime->hw.rate_min = chip->sample_rate; + runtime->hw.rate_max = chip->sample_rate; + } else { + runtime->hw.rate_min = chip->sample_rate_min; + runtime->hw.rate_max = chip->sample_rate_max; + } + chip->ref_count_rate++; snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); - /* period size = multiple of chip->granularity (8, 16 or 32 frames) - * use LOLA_GRANULARITY_MAX = 32 for instance - */ + /* period size = multiple of chip->granularity (8, 16 or 32 frames)*/ snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, chip->granularity); snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, @@ -215,6 +236,10 @@ static int lola_pcm_close(struct snd_pcm_substream *substream) str->substream = NULL; str->opened = 0; } + if (--chip->ref_count_rate == 0) { + /* release sample rate */ + chip->sample_rate = 0; + } mutex_unlock(&chip->open_mutex); return 0; } @@ -427,6 +452,11 @@ static int lola_pcm_prepare(struct snd_pcm_substream *substream) if (err < 0) return err; + err = lola_set_sample_rate(chip, runtime->rate); + if (err < 0) + return err; + chip->sample_rate = runtime->rate; /* sample rate gets locked */ + err = lola_set_stream_config(chip, str, runtime->channels); if (err < 0) return err; @@ -447,6 +477,7 @@ static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) struct snd_pcm_substream *s; unsigned int start; unsigned int tstamp; + bool sync_streams; switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -463,7 +494,12 @@ static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) return -EINVAL; } - tstamp = lola_get_tstamp(chip, false); + /* + * sample correct synchronization is only needed starting several + * streams on stop or if only one stream do as quick as possible + */ + sync_streams = (start && snd_pcm_stream_linked(substream)); + tstamp = lola_get_tstamp(chip, !sync_streams); spin_lock(&chip->reg_lock); snd_pcm_group_for_each_entry(s, substream) { if (s->pcm->card != substream->pcm->card) @@ -474,6 +510,7 @@ static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) else lola_stream_stop(chip, str, tstamp); str->running = start; + str->paused = !start; snd_pcm_trigger_done(s, substream); } spin_unlock(&chip->reg_lock); |