topology2: sdw-dmic-generic: add eqiir to control DC offset

For some reason we had the EQIIR for topology1/IPC3 but we didn't add
it for topology2/IPC4.  All recordings show there's a strong DC offset
with RT722 and other codecs, so let's add this component by default in
the non-passthrough cases.

FIXME: the instance numbers for eqiir don't look quite right, for some
reason we cannot use eqiir.41.0, as if the instance number was global
and not in the scope of a pipeline?

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

tools/topology/topology2/platform/intel/sdw-dmic-generic.conf

@@ -1,8 +1,10 @@
 # route and pipeline index start from pcm id * 10
 
 Define {
+	SDW_DMIC_CAPTURE_PCM_NAME	"Microphone"
 	SDW_DMIC_STREAM 'SDW3-Capture'
 	SDW_DMIC_BE_ID 4
+	SDW_DMIC_PASSTHROUGH "false"
 }
 
 Object.Dai.ALH [
@@ -77,6 +79,37 @@ Object.Widget {
 	]
 }
 
+IncludeByKey.SDW_DMIC_PASSTHROUGH {
+"false" {
+
+	# FIXME: we force the instance to '1' to avoid a conflict with eqiir.11.0
+	# if we used the array notation.
+	Object.Widget.eqiir.1
+		{
+			num_input_audio_formats 1
+			num_output_audio_formats 1
+			index		41
+			Object.Base.input_audio_format [
+				{
+					in_bit_depth		32
+					in_valid_bit_depth	32
+				}
+			]
+			Object.Base.output_audio_format [
+				{
+					out_bit_depth		32
+					out_valid_bit_depth	32
+				}
+			]
+
+			Object.Control.bytes."1" {
+				<include/components/eqiir/highpass_40hz_0db_48khz.conf>
+				name '$SDW_DMIC_CAPTURE_PCM_NAME Capture IIR Eq'
+			}
+		}
+	}
+}
+
 Object.PCM.pcm [
 	{
 		name	"Microphone"
@@ -93,9 +126,25 @@ Object.PCM.pcm [
 	}
 ]
 
-Object.Base.route [
-	{
-		source	"alh-copier.$SDW_DMIC_STREAM.0"
-		sink	"host-copier.4.capture"
+IncludeByKey.SDW_DMIC_PASSTHROUGH {
+	"true" {
+		Object.Base.route [
+			{
+				source	"alh-copier.$SDW_DMIC_STREAM.0"
+				sink	"host-copier.4.capture"
+			}
+		]
 	}
-]
+	"false" {
+		Object.Base.route [
+			{
+				source	"alh-copier.$SDW_DMIC_STREAM.0"
+				sink	"eqiir.41.1"
+			}
+			{
+				source "eqiir.41.1"
+				sink	"host-copier.4.capture"
+			}
+		]
+	}
+}