asoc: add support for afe_loopback_tx BE dai

Add dai driver and routing driver changes for
afe loopback BE. This BE is used to capture
EC reference data.

Change-Id: Ia57f335bde5f8a47de0030fbf1cdb784c8821e17
Signed-off-by: Surendar Karka <[email protected]>

asoc/msm-dai-q6-v2.c

@@ -3558,6 +3558,30 @@ static struct snd_soc_dai_driver msm_dai_q6_afe_rx_dai[] = {
 	},
 };
 
+static struct snd_soc_dai_driver msm_dai_q6_afe_lb_tx_dai[] = {
+	{
+		.capture = {
+			.stream_name = "AFE Loopback Capture",
+			.aif_name = "AFE_LOOPBACK_TX",
+			.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |
+			 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |
+			 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
+			 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
+			 SNDRV_PCM_RATE_192000,
+			.formats = (SNDRV_PCM_FMTBIT_S16_LE |
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_3LE |
+			SNDRV_PCM_FMTBIT_S32_LE ),
+			.channels_min = 1,
+			.channels_max = 8,
+			.rate_min =     8000,
+			.rate_max =     192000,
+		},
+		.id = AFE_LOOPBACK_TX,
+		.probe = msm_dai_q6_dai_probe,
+		.remove = msm_dai_q6_dai_remove,
+	},
+};
+
 static struct snd_soc_dai_driver msm_dai_q6_afe_tx_dai[] = {
 	{
 		.capture = {
@@ -3569,7 +3593,7 @@ static struct snd_soc_dai_driver msm_dai_q6_afe_tx_dai[] = {
 			.channels_min = 1,
 			.channels_max = 8,
 			.rate_min =     8000,
-			.rate_max =	48000,
+			.rate_max =     48000,
 		},
 		.ops = &msm_dai_q6_ops,
 		.id = RT_PROXY_DAI_002_TX,
@@ -3585,7 +3609,7 @@ static struct snd_soc_dai_driver msm_dai_q6_afe_tx_dai[] = {
 			.channels_min = 1,
 			.channels_max = 8,
 			.rate_min =     8000,
-			.rate_max =	48000,
+			.rate_max =     48000,
 		},
 		.ops = &msm_dai_q6_ops,
 		.id = RT_PROXY_DAI_001_TX,
@@ -5970,6 +5994,12 @@ register_slim_capture:
 			pr_err("%s: Device not found stream name %s\n",
 				__func__, stream_name);
 		break;
+	case AFE_LOOPBACK_TX:
+		rc = snd_soc_register_component(&pdev->dev,
+						&msm_dai_q6_component,
+						&msm_dai_q6_afe_lb_tx_dai[0],
+						1);
+		break;
 	case INT_BT_SCO_RX:
 		rc = snd_soc_register_component(&pdev->dev,
 			&msm_dai_q6_component, &msm_dai_q6_bt_sco_rx_dai, 1);

asoc/msm-pcm-routing-v2.c

@@ -642,6 +642,7 @@ struct msm_pcm_routing_bdai_data msm_bedais[MSM_BACKEND_DAI_MAX] = {
 	  LPASS_BE_SEC_SPDIF_TX},
 	{ SLIMBUS_9_RX, 0, {0}, {0}, 0, 0, 0, 0, LPASS_BE_SLIMBUS_9_RX},
 	{ SLIMBUS_9_TX, 0, {0}, {0}, 0, 0, 0, 0, LPASS_BE_SLIMBUS_9_TX},
+	{ AFE_LOOPBACK_TX, 0, {0}, {0}, 0, 0, 0, 0, LPASS_BE_AFE_LOOPBACK_TX},
 };
 
 /* Track ASM playback & capture sessions of DAI
@@ -9563,6 +9564,10 @@ static const struct snd_kcontrol_new mmul1_mixer_controls[] = {
 		MSM_BACKEND_DAI_SLIMBUS_9_TX,
 		MSM_FRONTEND_DAI_MULTIMEDIA1, 1, 0, msm_routing_get_audio_mixer,
 		msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+		MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+		MSM_FRONTEND_DAI_MULTIMEDIA1, 1, 0, msm_routing_get_audio_mixer,
+		msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul2_mixer_controls[] = {
@@ -9758,6 +9763,10 @@ static const struct snd_kcontrol_new mmul2_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA2, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA2, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul3_mixer_controls[] = {
@@ -9949,6 +9958,10 @@ static const struct snd_kcontrol_new mmul3_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA3, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA3, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul4_mixer_controls[] = {
@@ -10136,6 +10149,10 @@ static const struct snd_kcontrol_new mmul4_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA4, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA4, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul5_mixer_controls[] = {
@@ -10351,6 +10368,10 @@ static const struct snd_kcontrol_new mmul5_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA5, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA5, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul6_mixer_controls[] = {
@@ -10542,6 +10563,10 @@ static const struct snd_kcontrol_new mmul6_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA6, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA6, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul8_mixer_controls[] = {
@@ -10741,6 +10766,10 @@ static const struct snd_kcontrol_new mmul8_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA8, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA8, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul16_mixer_controls[] = {
@@ -10946,6 +10975,10 @@ static const struct snd_kcontrol_new mmul16_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA16, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA16, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul9_mixer_controls[] = {
@@ -11081,6 +11114,10 @@ static const struct snd_kcontrol_new mmul9_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA9, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA9, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul10_mixer_controls[] = {
@@ -11250,6 +11287,10 @@ static const struct snd_kcontrol_new mmul10_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA10, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA10, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 static const struct snd_kcontrol_new mmul17_mixer_controls[] = {
 	SOC_DOUBLE_EXT("SLIM_0_TX", SND_SOC_NOPM,
@@ -11350,6 +11391,10 @@ static const struct snd_kcontrol_new mmul17_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA17, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA17, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul18_mixer_controls[] = {
@@ -11455,6 +11500,10 @@ static const struct snd_kcontrol_new mmul18_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA18, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA18, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul19_mixer_controls[] = {
@@ -11556,6 +11605,10 @@ static const struct snd_kcontrol_new mmul19_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA19, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA19, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul20_mixer_controls[] = {
@@ -11711,6 +11764,10 @@ static const struct snd_kcontrol_new mmul20_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA20, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA20, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul21_mixer_controls[] = {
@@ -11854,6 +11911,10 @@ static const struct snd_kcontrol_new mmul21_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA21, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA21, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul27_mixer_controls[] = {
@@ -11901,6 +11962,10 @@ static const struct snd_kcontrol_new mmul27_mixer_controls[] = {
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA27, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA27, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul28_mixer_controls[] = {
@@ -12002,6 +12067,10 @@ static const struct snd_kcontrol_new mmul28_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA28, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA28, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new mmul29_mixer_controls[] = {
@@ -12103,6 +12172,10 @@ static const struct snd_kcontrol_new mmul29_mixer_controls[] = {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_FRONTEND_DAI_MULTIMEDIA29, 1, 0, msm_routing_get_audio_mixer,
 	msm_routing_put_audio_mixer),
+	SOC_DOUBLE_EXT("AFE_LOOPBACK_TX", SND_SOC_NOPM,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
+	MSM_FRONTEND_DAI_MULTIMEDIA29, 1, 0, msm_routing_get_audio_mixer,
+	msm_routing_put_audio_mixer),
 };
 
 static const struct snd_kcontrol_new pri_rx_voice_mixer_controls[] = {
@@ -18853,7 +18926,8 @@ static const struct snd_soc_dapm_widget msm_qdsp6_widgets[] = {
 	/* In- call recording */
 	SND_SOC_DAPM_AIF_OUT("SLIMBUS_6_RX", "Slimbus6 Playback", 0, 0, 0, 0),
 	SND_SOC_DAPM_AIF_IN("SLIMBUS_6_TX", "Slimbus6 Capture", 0, 0, 0, 0),
-
+	SND_SOC_DAPM_AIF_IN("AFE_LOOPBACK_TX", "AFE Loopback Capture",
+				0, 0, 0, 0),
 	SND_SOC_DAPM_AIF_OUT("SLIMBUS_7_RX", "Slimbus7 Playback", 0, 0, 0, 0),
 	SND_SOC_DAPM_AIF_IN("SLIMBUS_7_TX", "Slimbus7 Capture", 0, 0, 0, 0),
 
@@ -20746,6 +20820,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia1 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia1 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia1 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia1 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia1 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia1 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia1 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20780,6 +20855,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia2 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia2 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia2 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia2 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia2 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia2 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia2 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20814,6 +20890,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia3 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia3 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia3 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia3 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia3 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia3 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia3 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20848,6 +20925,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia4 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia4 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia4 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia4 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia4 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia4 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia4 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20882,6 +20960,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia5 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia5 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia5 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia5 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia5 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia5 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia5 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20916,6 +20995,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia6 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia6 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia6 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia6 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia6 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia6 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia6 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20950,6 +21030,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia8 Mixer", "QUAT_TDM_TX_1", "QUAT_TDM_TX_1"},
 	{"MultiMedia8 Mixer", "QUAT_TDM_TX_2", "QUAT_TDM_TX_2"},
 	{"MultiMedia8 Mixer", "QUAT_TDM_TX_3", "QUAT_TDM_TX_3"},
+	{"MultiMedia8 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 	{"MultiMedia8 Mixer", "QUIN_TDM_TX_0", "QUIN_TDM_TX_0"},
 	{"MultiMedia8 Mixer", "QUIN_TDM_TX_1", "QUIN_TDM_TX_1"},
 	{"MultiMedia8 Mixer", "QUIN_TDM_TX_2", "QUIN_TDM_TX_2"},
@@ -20993,6 +21074,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia9 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
 	{"MultiMedia9 Mixer", "PRI_SPDIF_TX", "PRI_SPDIF_TX"},
 	{"MultiMedia9 Mixer", "SEC_SPDIF_TX", "SEC_SPDIF_TX"},
+	{"MultiMedia9 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia10 Mixer", "TERT_TDM_TX_0", "TERT_TDM_TX_0"},
 	{"MultiMedia10 Mixer", "TERT_TDM_TX_1", "TERT_TDM_TX_1"},
@@ -21008,6 +21090,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia10 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia10 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia10 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia10 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia20 Mixer", "PRI_MI2S_TX", "PRI_MI2S_TX"},
 	{"MultiMedia20 Mixer", "SEC_MI2S_TX", "SEC_MI2S_TX"},
@@ -21047,6 +21130,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia20 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
 	{"MultiMedia20 Mixer", "PRI_SPDIF_TX", "PRI_SPDIF_TX"},
 	{"MultiMedia20 Mixer", "SEC_SPDIF_TX", "SEC_SPDIF_TX"},
+	{"MultiMedia20 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia21 Mixer", "AUX_PCM_UL_TX", "AUX_PCM_TX"},
 	{"MultiMedia21 Mixer", "SEC_AUX_PCM_UL_TX", "SEC_AUX_PCM_TX"},
@@ -21083,6 +21167,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia21 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
 	{"MultiMedia21 Mixer", "PRI_SPDIF_TX", "PRI_SPDIF_TX"},
 	{"MultiMedia21 Mixer", "SEC_SPDIF_TX", "SEC_SPDIF_TX"},
+	{"MultiMedia21 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia27 Mixer", "SLIM_0_TX", "SLIMBUS_0_TX"},
 	{"MultiMedia27 Mixer", "SLIM_6_TX", "SLIMBUS_6_TX"},
@@ -21095,6 +21180,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia27 Mixer", "QUIN_MI2S_TX", "QUIN_MI2S_TX"},
 	{"MultiMedia27 Mixer", "PRI_SPDIF_TX", "PRI_SPDIF_TX"},
 	{"MultiMedia27 Mixer", "SEC_SPDIF_TX", "SEC_SPDIF_TX"},
+	{"MultiMedia27 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia1 Mixer", "USB_AUDIO_TX", "USB_AUDIO_TX"},
 	{"MultiMedia2 Mixer", "USB_AUDIO_TX", "USB_AUDIO_TX"},
@@ -21134,6 +21220,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia16 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
 	{"MultiMedia16 Mixer", "PRI_SPDIF_TX", "PRI_SPDIF_TX"},
 	{"MultiMedia16 Mixer", "SEC_SPDIF_TX", "SEC_SPDIF_TX"},
+	{"MultiMedia16 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia17 Mixer", "TX_CDC_DMA_TX_0", "TX_CDC_DMA_TX_0"},
 	{"MultiMedia17 Mixer", "TX_CDC_DMA_TX_1", "TX_CDC_DMA_TX_1"},
@@ -21141,6 +21228,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia17 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia17 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia17 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia17 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia18 Mixer", "TX_CDC_DMA_TX_0", "TX_CDC_DMA_TX_0"},
 	{"MultiMedia18 Mixer", "TX_CDC_DMA_TX_1", "TX_CDC_DMA_TX_1"},
@@ -21148,6 +21236,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia18 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia18 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia18 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia18 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia19 Mixer", "TX_CDC_DMA_TX_0", "TX_CDC_DMA_TX_0"},
 	{"MultiMedia19 Mixer", "TX_CDC_DMA_TX_1", "TX_CDC_DMA_TX_1"},
@@ -21155,6 +21244,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia19 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia19 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia19 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia19 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia28 Mixer", "TX_CDC_DMA_TX_0", "TX_CDC_DMA_TX_0"},
 	{"MultiMedia28 Mixer", "TX_CDC_DMA_TX_1", "TX_CDC_DMA_TX_1"},
@@ -21162,6 +21252,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia28 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia28 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia28 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia28 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"MultiMedia29 Mixer", "TX_CDC_DMA_TX_0", "TX_CDC_DMA_TX_0"},
 	{"MultiMedia29 Mixer", "TX_CDC_DMA_TX_1", "TX_CDC_DMA_TX_1"},
@@ -21169,6 +21260,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"MultiMedia29 Mixer", "TX_CDC_DMA_TX_3", "TX_CDC_DMA_TX_3"},
 	{"MultiMedia29 Mixer", "TX_CDC_DMA_TX_4", "TX_CDC_DMA_TX_4"},
 	{"MultiMedia29 Mixer", "TX_CDC_DMA_TX_5", "TX_CDC_DMA_TX_5"},
+	{"MultiMedia29 Mixer", "AFE_LOOPBACK_TX", "AFE_LOOPBACK_TX"},
 
 	{"INTERNAL_BT_SCO_RX Audio Mixer", "MultiMedia1", "MM_DL1"},
 	{"INTERNAL_BT_SCO_RX Audio Mixer", "MultiMedia2", "MM_DL2"},
@@ -22850,6 +22942,7 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"QUAT_TDM_TX_1", NULL, "BE_IN"},
 	{"QUAT_TDM_TX_2", NULL, "BE_IN"},
 	{"QUAT_TDM_TX_3", NULL, "BE_IN"},
+	{"AFE_LOOPBACK_TX", NULL, "BE_IN"},
 	{"QUIN_TDM_TX_0", NULL, "BE_IN"},
 	{"QUIN_TDM_TX_1", NULL, "BE_IN"},
 	{"QUIN_TDM_TX_2", NULL, "BE_IN"},

asoc/msm-pcm-routing-v2.h

@@ -144,6 +144,7 @@
 #define LPASS_BE_QUAT_TDM_TX_6 "QUAT_TDM_TX_6"
 #define LPASS_BE_QUAT_TDM_RX_7 "QUAT_TDM_RX_7"
 #define LPASS_BE_QUAT_TDM_TX_7 "QUAT_TDM_TX_7"
+#define LPASS_BE_AFE_LOOPBACK_TX "AFE_LOOPBACK_TX"
 #define LPASS_BE_QUIN_TDM_RX_0 "QUIN_TDM_RX_0"
 #define LPASS_BE_QUIN_TDM_TX_0 "QUIN_TDM_TX_0"
 #define LPASS_BE_QUIN_TDM_RX_1 "QUIN_TDM_RX_1"
@@ -455,6 +456,7 @@ enum {
 	MSM_BACKEND_DAI_SEC_SPDIF_TX,
 	MSM_BACKEND_DAI_SLIMBUS_9_RX,
 	MSM_BACKEND_DAI_SLIMBUS_9_TX,
+	MSM_BACKEND_DAI_AFE_LOOPBACK_TX,
 	MSM_BACKEND_DAI_MAX,
 };
 

dsp/q6afe.c

@@ -4584,6 +4584,8 @@ int afe_get_port_index(u16 port_id)
 		return IDX_AFE_PORT_ID_RX_CODEC_DMA_RX_6;
 	case AFE_PORT_ID_RX_CODEC_DMA_RX_7:
 		return IDX_AFE_PORT_ID_RX_CODEC_DMA_RX_7;
+	case AFE_LOOPBACK_TX:
+		return IDX_AFE_LOOPBACK_TX;
 	default:
 		pr_err("%s: port 0x%x\n", __func__, port_id);
 		return -EINVAL;

include/dsp/apr_audio-v2.h

@@ -1341,6 +1341,7 @@ struct adm_cmd_connect_afe_port_v5 {
 #define INT_FM_TX 0x3005
 #define RT_PROXY_PORT_001_RX	0x2000
 #define RT_PROXY_PORT_001_TX	0x2001
+#define AFE_LOOPBACK_TX	0x6001
 #define DISPLAY_PORT_RX	0x6020
 
 #define AFE_PORT_INVALID 0xFFFF

include/dsp/q6afe-v2.h

@@ -258,6 +258,7 @@ enum {
 	/* IDX 187 -> 189 */
 	IDX_AFE_PORT_ID_SENARY_PCM_RX,
 	IDX_AFE_PORT_ID_SENARY_PCM_TX,
+	IDX_AFE_LOOPBACK_TX,
 	AFE_MAX_PORTS
 };