[alsa-devel] [RFC PATCH 6/6] [HACK] ASoC: Intel: NHLT: handle VENDOR_DEFINED DMIC geometry

[Pierre-Louis Bossart]

The NHLT spec defines a VENDOR_DEFINED geometry without defining how
many microphones are supported. Fall back to 2ch until we have better
information or experimental evidence on what to do.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/intel/common/intel-nhlt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/common/intel-nhlt.c b/sound/soc/intel/common/intel-nhlt.c
index d93ecc32d996..86f8a7f3f059 100644
--- a/sound/soc/intel/common/intel-nhlt.c
+++ b/sound/soc/intel/common/intel-nhlt.c
@@ -81,7 +81,10 @@ int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt)
 			case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
 				dmic_geo |= MIC_ARRAY_4CH;
 				break;
-
+			case NHLT_MIC_ARRAY_VENDOR_DEFINED:
+				dev_dbg(dev, "VENDOR_DEFINED DMIC array_type, using 2CH_SMALL\n");
+				dmic_geo |= NHLT_MIC_ARRAY_2CH_SMALL;
+				break;
 			default:
 				dev_warn(dev, "undefined DMIC array_type 0x%0x\n",
 					 cfg->array_type);
-- 
2.20.1