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Subject[PATCH 3.12 047/116] ALSA: hda - Force buffer alignment for Haswell HDMI controllers
Date
3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

commit 33499a15c2f7addc81695778753c2338b960eff7 upstream.

Haswell HDMI audio controllers seem to get stuck when unaligned buffer
size is used. Let's enable the buffer alignment for the corresponding
entries.

Since AZX_DCAPS_INTEL_PCH contains AZX_DCAPS_BUFSIZE that disables the
buffer alignment forcibly, define AZX_DCAPS_INTEL_HASWELL and put the
necessary AZX_DCAPS bits there.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60769
Reported-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/pci/hda/hda_intel.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -612,6 +612,11 @@ enum {
#define AZX_DCAPS_INTEL_PCH \
(AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_PM_RUNTIME)

+#define AZX_DCAPS_INTEL_HASWELL \
+ (AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_ALIGN_BUFSIZE | \
+ AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME | \
+ AZX_DCAPS_I915_POWERWELL)
+
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
(AZX_DCAPS_ATI_SNOOP | AZX_DCAPS_NO_TCSEL | \
@@ -3987,14 +3992,11 @@ static DEFINE_PCI_DEVICE_TABLE(azx_ids)
.driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Haswell */
{ PCI_DEVICE(0x8086, 0x0a0c),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH |
- AZX_DCAPS_I915_POWERWELL },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_HASWELL },
{ PCI_DEVICE(0x8086, 0x0c0c),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH |
- AZX_DCAPS_I915_POWERWELL },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_HASWELL },
{ PCI_DEVICE(0x8086, 0x0d0c),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH |
- AZX_DCAPS_I915_POWERWELL },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_HASWELL },
/* 5 Series/3400 */
{ PCI_DEVICE(0x8086, 0x3b56),
.driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },



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