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ALSA: hda - Use position_fix=3 as default for AMD chipsets 

AMD chipsets often behave pretty badly regarding the DMA position
reporting.  It results in the bad quality audio recording.
Using position_fix=3 works well in general for them, so let's enable
it as default for AMD.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-05-04 18:28:50 +02:00
parent ce85c9ac8d
commit 447ee6a7cb
1 changed files with 5 additions and 0 deletions
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5
sound/pci/hda/hda_intel.c
View File

@ -2364,6 +2364,11 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
case AZX_DRIVER_ATI:
/* Use link position directly, avoid any transfer problem. */
return POS_FIX_VIACOMBO;
case AZX_DRIVER_GENERIC:
/* AMD chipsets behave often badly, too */
if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
return POS_FIX_VIACOMBO;
break;
}
return POS_FIX_AUTO;