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ALSA: hdspm - Introduce hdspm_get_aes_sample_rate()

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Helper function to return the AES sample rate class. This class needs to
be translated via HDSPM_bit2freq() to get the more common
representation.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Adrian Knoth 2013-07-05 11:28:09 +02:00 committed by Takashi Iwai
parent db2d1a913d
commit d3c36ed8e5
1 changed files with 17 additions and 0 deletions
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17
sound/pci/rme9652/hdspm.c
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@ -2224,6 +2224,23 @@ static int hdspm_get_sync_in_sample_rate(struct hdspm *hdspm)
return 0;
}
/**
* Returns the AES sample rate class for the given card.
**/
static int hdspm_get_aes_sample_rate(struct hdspm *hdspm, int index)
{
int timecode;
switch (hdspm->io_type) {
case AES32:
timecode = hdspm_read(hdspm, HDSPM_timecodeRegister);
return (timecode >> (4*index)) & 0xF;
break;
default:
break;
}
return 0;
}
/**
* Returns the sample rate class for input source <idx> for