2009/12/10 pl bossart <bossart.nospam@xxxxxxxxx>
> Takashi,
> I tested with .periods_min=2 and reduced the period_max by half. The
> underruns reported by PulseAudio are no longer present with this
> modification.
>
why did you reduce periods_max by half since the driver should still support
1024 periods of 32 bytes when you set periods_min = 2 ?
Is it period_bytes_max by half ?
static struct snd_pcm_hardware snd_intel8x0_stream =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 128 * 1024,
.period_bytes_min = 32,
.period_bytes_max = 128 * 1024,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
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