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ALSA: hda - Use LPIB for ATI/AMD chipsets as default
ATI and AMD chipsets seem not providing the proper position-buffer information, and it also doesn't provide FIFO register required by VIACOMBO fix. It's better to use LPIB for these. Reported-by: David Henningsson <david.henningsson@canonical.com> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -2367,9 +2367,16 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
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/* Check VIA/ATI HD Audio Controller exist */
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switch (chip->driver_type) {
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case AZX_DRIVER_VIA:
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case AZX_DRIVER_ATI:
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/* Use link position directly, avoid any transfer problem. */
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return POS_FIX_VIACOMBO;
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case AZX_DRIVER_ATI:
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/* ATI chipsets don't work well with position-buffer */
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return POS_FIX_LPIB;
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case AZX_DRIVER_GENERIC:
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/* AMD chipsets also don't work with position-buffer */
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if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
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return POS_FIX_LPIB;
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break;
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}
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return POS_FIX_AUTO;
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