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| author | Takashi Iwai <tiwai@suse.de> | 2011-05-20 16:29:09 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-05-20 16:29:09 +0200 |
| commit | 50e3bbf9898840eead86f90a43b3625a2b2f4112 (patch) | |
| tree | efc2ade5103aef34f3555b387fe6bffa1cf6eff6 /sound | |
| parent | 314c3ff47643c7c1f11317f81a80902af80795e3 (diff) | |
| download | lwn-50e3bbf9898840eead86f90a43b3625a2b2f4112.tar.gz lwn-50e3bbf9898840eead86f90a43b3625a2b2f4112.zip | |
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')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 9 |
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; |