Re: [alsa-devel] [PATCH v2 10/10] ALSA: hda: replace .wallclock by .get_time_info

No real functional change, only take wall clock and system time in same routine and add accuracy report.

•           *audio_ts = ns_to_timespec(nsec);
  

•           audio_tstamp_report->actual_type =
  

SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK;

•           audio_tstamp_report->accuracy_report = 1; /* rest of
  

structure is valid */

•           audio_tstamp_report->accuracy_m = 42; /* 24 MHz WallClock
  

== 42ns resolution */

•           audio_tstamp_report->accuracy_e = 0;
  

Do you mean wall clock run at 48000 * 500 Hz ? 42.666ns

Those aureal sound cards also can provide time stamp using VORTEX_SMP_TIME mmio register which tick at 48000 * 256 Hz ?