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authorTakashi Iwai <tiwai@suse.de>2011-05-20 16:29:09 +0200
committerTakashi Iwai <tiwai@suse.de>2011-05-20 16:29:09 +0200
commit50e3bbf9898840eead86f90a43b3625a2b2f4112 (patch)
treeefc2ade5103aef34f3555b387fe6bffa1cf6eff6 /sound/pci
parent314c3ff47643c7c1f11317f81a80902af80795e3 (diff)
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>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/hda_intel.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 0c1996dd137b..43a036716d25 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2367,9 +2367,16 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
/* Check VIA/ATI HD Audio Controller exist */
switch (chip->driver_type) {
case AZX_DRIVER_VIA:
- case AZX_DRIVER_ATI:
/* Use link position directly, avoid any transfer problem. */
return POS_FIX_VIACOMBO;
+ case AZX_DRIVER_ATI:
+ /* ATI chipsets don't work well with position-buffer */
+ return POS_FIX_LPIB;
+ case AZX_DRIVER_GENERIC:
+ /* AMD chipsets also don't work with position-buffer */
+ if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
+ return POS_FIX_LPIB;
+ break;
}
return POS_FIX_AUTO;