| From 56e696c0f0c71b77fff921fc94b58a02f0445b2c Mon Sep 17 00:00:00 2001 |
| From: Takashi Iwai <tiwai@suse.de> |
| Date: Sat, 1 Oct 2022 16:21:24 +0200 |
| Subject: ALSA: hda: Fix position reporting on Poulsbo |
| |
| From: Takashi Iwai <tiwai@suse.de> |
| |
| commit 56e696c0f0c71b77fff921fc94b58a02f0445b2c upstream. |
| |
| Hans reported that his Sony VAIO VPX11S1E showed the broken sound |
| behavior at the start of the stream for a couple of seconds, and it |
| turned out that the position_fix=1 option fixes the issue. It implies |
| that the position reporting is inaccurate, and very likely hitting on |
| all Poulsbo devices. |
| |
| The patch applies the workaround for Poulsbo generically to switch to |
| LPIB mode instead of the default position buffer. |
| |
| Reported-and-tested-by: Hans de Goede <hdegoede@redhat.com> |
| Cc: <stable@vger.kernel.org> |
| Link: https://lore.kernel.org/r/3e8697e1-87c6-7a7b-d2e8-b21f1d2f181b@redhat.com |
| Link: https://lore.kernel.org/r/20221001142124.7241-1-tiwai@suse.de |
| Signed-off-by: Takashi Iwai <tiwai@suse.de> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| sound/pci/hda/hda_intel.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/sound/pci/hda/hda_intel.c |
| +++ b/sound/pci/hda/hda_intel.c |
| @@ -2571,7 +2571,8 @@ static const struct pci_device_id azx_id |
| .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM }, |
| /* Poulsbo */ |
| { PCI_DEVICE(0x8086, 0x811b), |
| - .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE }, |
| + .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE | |
| + AZX_DCAPS_POSFIX_LPIB }, |
| /* Oaktrail */ |
| { PCI_DEVICE(0x8086, 0x080a), |
| .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE }, |
