commit: 50e3bbf9898840eead86f90a43b3625a2b2f4112 From: Takashi Iwai <[email protected]> Date: Fri, 20 May 2011 16:29:09 +0200 Subject: [PATCH] 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 <[email protected]> Cc: <[email protected]> Signed-off-by: Takashi Iwai <[email protected]> --- 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 0c1996d..43a0367 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; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
