ALSA: HDA: Use LPIB Position fix for Intel SCH Poulsbo
David Henningsson [Wed, 14 Dec 2011 07:52:30 +0000 (15:52 +0800)]
Several people with this chipset have reported inconsistent/sloppy
values for position reporting when the DMA position buffer is used,
and that setting position_fix=1 have fixed their problems.

BugLink: https://bugs.launchpad.net/bugs/825709
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

index 84d11d7..c2f79e6 100644 (file)
@@ -2971,7 +2971,8 @@ static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
        /* SCH */
        { PCI_DEVICE(0x8086, 0x811b),
          .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
-         AZX_DCAPS_BUFSIZE},
+         AZX_DCAPS_BUFSIZE | AZX_DCAPS_POSFIX_LPIB }, /* Poulsbo */
+       /* ICH */
        { PCI_DEVICE(0x8086, 0x2668),
          .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
          AZX_DCAPS_BUFSIZE },  /* ICH6 */