diff options
Diffstat (limited to 'sound/soc/davinci/davinci-mcasp.c')
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 804c6f2bcf21..03ba218160ca 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -1242,6 +1242,20 @@ static int davinci_mcasp_hw_rule_format(struct snd_pcm_hw_params *params, return snd_mask_refine(fmt, &nfmt); } +static int davinci_mcasp_hw_rule_min_periodsize( + struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *period_size = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE); + struct snd_interval frames; + + snd_interval_any(&frames); + frames.min = 64; + frames.integer = 1; + + return snd_interval_refine(period_size, &frames); +} + static int davinci_mcasp_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { @@ -1333,6 +1347,11 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream, return ret; } + snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, + davinci_mcasp_hw_rule_min_periodsize, NULL, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); + return 0; } |