diff options
Diffstat (limited to 'sound/pci/rme9652/hdspm.c')
| -rw-r--r-- | sound/pci/rme9652/hdspm.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index e070ea85c30a..8eb2070fd258 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -1091,6 +1091,26 @@ static int hdspm_round_frequency(int rate) return 48000; } +/* 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. + */ +static int hdspm_rate_multiplier(struct hdspm *hdspm, int rate) +{ + if (rate <= 48000) { + if (hdspm->control_register & HDSPM_QuadSpeed) + return rate * 4; + else if (hdspm->control_register & + HDSPM_DoubleSpeed) + return rate * 2; + }; + return rate; +} + static int hdspm_tco_sync_check(struct hdspm *hdspm); static int hdspm_sync_in_sync_check(struct hdspm *hdspm); @@ -1268,21 +1288,8 @@ static int hdspm_external_sample_rate(struct hdspm *hdspm) } } - /* 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; - } + rate = hdspm_rate_multiplier(hdspm, rate); + break; } |