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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2021-03-02 03:01:46 +0300
committerTakashi Iwai <tiwai@suse.de>2021-03-02 12:22:47 +0300
commita864e8f159b13babf552aff14a5fbe11abc017e4 (patch)
tree9fb0b7ae6805b966e6de1c99ef854f28a48e89c4 /include
parent3531ba21f5520d0865004e7d75b6f505d08589f2 (diff)
downloadlinux-a864e8f159b13babf552aff14a5fbe11abc017e4.tar.xz
ALSA: hda: intel-nhlt: verify config type
Multiple bug reports report issues with the SOF and SST drivers when dealing with single microphone cases. We currently read the DMIC array information unconditionally but we don't check that the configuration type is actually a mic array. When the DMIC link does not rely on a mic array configuration, the recommendation is to check the format information to infer the maximum number of channels, and map this to the number of microphones. This leaves a potential for a mismatch between actual microphones available in hardware and what the ACPI table contains, but we have no other source of information. Note that single microphone configurations can alternatively be handled with a 'mic array' configuration along with a 'vendor-defined' geometry. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201251 BugLink: https://github.com/thesofproject/linux/issues/2725 Fixes: 7a33ea70e1868 ('ALSA: hda: intel-nhlt: handle NHLT VENDOR_DEFINED DMIC geometry') Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Link: https://lore.kernel.org/r/20210302000146.1177770-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include')
-rw-r--r--include/sound/intel-nhlt.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sound/intel-nhlt.h b/include/sound/intel-nhlt.h
index 743c2f442280..d0574805865f 100644
--- a/include/sound/intel-nhlt.h
+++ b/include/sound/intel-nhlt.h
@@ -113,6 +113,11 @@ struct nhlt_vendor_dmic_array_config {
} __packed;
enum {
+ NHLT_CONFIG_TYPE_GENERIC = 0,
+ NHLT_CONFIG_TYPE_MIC_ARRAY = 1
+};
+
+enum {
NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
NHLT_MIC_ARRAY_2CH_BIG = 0xb,
NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,