diff options
Diffstat (limited to 'sound/pci/rme9652/hdspm.c')
| -rw-r--r-- | sound/pci/rme9652/hdspm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index d219649..88ae274 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -1217,6 +1217,22 @@ static int hdspm_external_sample_rate(struct hdspm *hdspm) rate = 0; break; } + + /* QS and DS rates normally can not be detected + * automatically by the card. Only exception is MADI + * in 96k frame mode. + * + * So if we read SS values (32 .. 48k), check for + * user-provided DS/QS bits in the control register + * and multiply the base frequency accordingly. + */ + if (rate <= 48000) { + if (hdspm->control_register & HDSPM_QuadSpeed) + rate *= 4; + else if (hdspm->control_register & + HDSPM_DoubleSpeed) + rate *= 2; + } } break; } |