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ASoC: SOF: Intel: hda: Add a virtual CPU DAI

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Add a virtual CPU DAI for loopback capture for echo reference
implementation. We can't use the snd-soc-dummy-dai because it is already
used for the bluetooth DAI link.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Mateusz Redzynia <mateuszx.redzynia@intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://patch.msgid.link/20260204081833.16630-11-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ranjani Sridharan 2026-02-04 10:18:33 +02:00 • committed by Mark Brown
parent 16c589567a
commit 6c52fda420
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2 changed files with 10 additions and 2 deletions
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8
sound/soc/sof/intel/hda-dai.c
View file

@ -866,6 +866,14 @@ struct snd_soc_dai_driver skl_dai[] = {
.channels_max = 4,
},
},
{
/* Virtual CPU DAI for Echo reference */
.name = "Loopback Virtual Pin",
.capture = {
.channels_min = 1,
.channels_max = 2,
},
},
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
{
.name = "iDisp1 Pin",

4
sound/soc/sof/intel/hda.h
View file

@ -418,10 +418,10 @@
(HDA_DSP_BDL_SIZE / sizeof(struct sof_intel_dsp_bdl))
/* Number of DAIs */
#define SOF_SKL_NUM_DAIS_NOCODEC 8
#define SOF_SKL_NUM_DAIS_NOCODEC 9
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
#define SOF_SKL_NUM_DAIS 15
#define SOF_SKL_NUM_DAIS 16
#else
#define SOF_SKL_NUM_DAIS SOF_SKL_NUM_DAIS_NOCODEC
#endif