aoc/alsa: audio capture from eraserandroid-12.0.0_r0.42android-12.0.0_r0.36android-12.0.0_r0.26android-gs-raviole-5.10-android12-qpr1-d

Added support to get audio capture stream from eraser for speech
recognition.

Usage examples:

- Choose capture mic source as ERASER
       tinymix "Audio Capture Mic Source" "ERASER"
       tinymix "EP1 TX Mixer ERASER_TX" 1

- Enable Eraser
       tinymix "Audio Capture Eraser Enable" 1

Bug: 172266161
Bug: 196896800

Signed-off-by: Xinhui Zhou <zxinhui@google.com>
Change-Id: I04333a695583c4cfa351cb121bd16bc52f5783b9

6 files changed, 111 insertions, 2 deletions

diff --git a/alsa/aoc_alsa.h b/alsa/aoc_alsa.h
index fb58acb..ae76ee1 100755
--- a/alsa/aoc_alsa.h
+++ b/alsa/aoc_alsa.h
@@ -169,7 +169,7 @@ enum { NORMAL = 0, MMAPED, RAW, INCALL, HIFI, ANDROID_AEC, COMPRESS };
 
 enum { BUILTIN_MIC0 = 0, BUILTIN_MIC1, BUILTIN_MIC2, BUILTIN_MIC3 };
 enum { MIC_LOW_POWER_GAIN = 0, MIC_HIGH_POWER_GAIN, MIC_CURRENT_GAIN };
-enum { DEFAULT_MIC = 0, BUILTIN_MIC, USB_MIC, BT_MIC, IN_CALL_MUSIC, NO_MIC=IN_CALL_MUSIC };
+enum { DEFAULT_MIC = 0, BUILTIN_MIC, USB_MIC, BT_MIC, IN_CALL_MUSIC, NO_MIC=IN_CALL_MUSIC, ERASER };
 enum { INCALL_CAPTURE_OFF = 0, INCALL_CAPTURE_UL, INCALL_CAPTURE_DL, INCALL_CAPTURE_UL_DL };
 enum { NONBLOCKING = 0, BLOCKING = 1 };
 enum { STOP = 0, START };
@@ -213,6 +213,7 @@ struct aoc_chip {
 
 	int compr_offload_volume;
 	int mic_spatial_module_enable;
+	int capture_eraser_enable;
 	int sidetone_enable;
 	int mic_loopback_enabled;
 	unsigned int opened;
@@ -321,6 +322,7 @@ int ap_record_stop(struct aoc_chip *chip);
 int aoc_capture_filter_runtime_control(struct aoc_chip *chip, uint32_t port_id, bool on);
 int aoc_audio_capture_runtime_trigger(struct aoc_chip *chip, int ep_id,
 	 int dst, bool on);
+int aoc_audio_capture_eraser_enable(struct aoc_chip *chip, long enable);
 
 int aoc_voice_call_mic_mute(struct aoc_chip *chip, int mute);
 int aoc_incall_capture_enable_get(struct aoc_chip *chip, int stream, long *val);
diff --git a/alsa/aoc_alsa_card.c b/alsa/aoc_alsa_card.c
index 4462565..f903e00 100644
--- a/alsa/aoc_alsa_card.c
+++ b/alsa/aoc_alsa_card.c
@@ -251,6 +251,7 @@ static const struct be_param_cache default_be_params[PORT_MAX] = {
 	MK_TDM_BE_PARAMS(TDM_1_TX, SNDRV_PCM_FORMAT_S16_LE,
 			2, 48000, 4, SNDRV_PCM_FORMAT_S32_LE)
 	MK_BE_PARAMS(INTERNAL_MIC_TX, SNDRV_PCM_FORMAT_S16_LE, 2, 48000)
+	MK_BE_PARAMS(ERASER_TX, SNDRV_PCM_FORMAT_S16_LE, 2, 48000)
 	MK_BE_PARAMS(BT_RX, SNDRV_PCM_FORMAT_S16_LE, 1, 16000)
 	MK_BE_PARAMS(BT_TX, SNDRV_PCM_FORMAT_S16_LE, 1, 16000)
 	MK_BE_PARAMS(USB_RX, SNDRV_PCM_FORMAT_S16_LE, 2, 48000)
@@ -941,6 +942,7 @@ MK_TDM_HW_PARAM_CTRLS(TDM_0_TX, "TDM_0_TX");
 MK_TDM_HW_PARAM_CTRLS(TDM_1_RX, "TDM_1_RX");
 MK_TDM_HW_PARAM_CTRLS(TDM_1_TX, "TDM_1_TX");
 MK_HW_PARAM_CTRLS(INTERNAL_MIC_TX, "INTERNAL_MIC_TX");
+MK_HW_PARAM_CTRLS(ERASER_TX, "ERASER_TX");
 MK_HW_PARAM_CTRLS(BT_RX, "BT_RX");
 MK_HW_PARAM_CTRLS(BT_TX, "BT_TX");
 MK_HW_PARAM_CTRLS(USB_RX, "USB_RX");
@@ -966,6 +968,7 @@ static const struct dai_link_res_map be_res_map[PORT_MAX] = {
 	MK_BE_RES_ITEM(TDM_1_RX, &aoc_tdm_ops, hw_params_fixup)
 	MK_BE_RES_ITEM(TDM_1_TX, &aoc_tdm_ops, hw_params_fixup)
 	MK_BE_RES_ITEM(INTERNAL_MIC_TX, &aoc_i2s_ops, hw_params_fixup)
+	MK_BE_RES_ITEM(ERASER_TX, &aoc_i2s_ops, hw_params_fixup)
 	MK_BE_RES_ITEM(BT_RX, &aoc_i2s_ops, hw_params_fixup)
 	MK_BE_RES_ITEM(BT_TX, &aoc_i2s_ops, hw_params_fixup)
 	MK_BE_RES_ITEM(USB_RX, &aoc_i2s_ops, hw_params_fixup)
diff --git a/alsa/aoc_alsa_ctl.c b/alsa/aoc_alsa_ctl.c
index 91a8acf..6c5edd2 100755
--- a/alsa/aoc_alsa_ctl.c
+++ b/alsa/aoc_alsa_ctl.c
@@ -539,6 +539,40 @@ static int decoder_ref_enable_ctl_get(struct snd_kcontrol *kcontrol,
 	return err;
 }
 
+static int audio_capture_eraser_enable_ctl_get(struct snd_kcontrol *kcontrol,
+					       struct snd_ctl_elem_value *ucontrol)
+{
+	struct aoc_chip *chip = snd_kcontrol_chip(kcontrol);
+
+	if (mutex_lock_interruptible(&chip->audio_mutex))
+		return -EINTR;
+
+	ucontrol->value.integer.value[0] = chip->capture_eraser_enable;
+
+	mutex_unlock(&chip->audio_mutex);
+
+	return 0;
+}
+
+static int audio_capture_eraser_enable_ctl_set(struct snd_kcontrol *kcontrol,
+					       struct snd_ctl_elem_value *ucontrol)
+{
+	struct aoc_chip *chip = snd_kcontrol_chip(kcontrol);
+	int err = 0;
+
+	if (mutex_lock_interruptible(&chip->audio_mutex))
+		return -EINTR;
+
+	chip->capture_eraser_enable = ucontrol->value.integer.value[0];
+	err = aoc_audio_capture_eraser_enable(chip, chip->capture_eraser_enable);
+	if (err < 0)
+		pr_err("ERR:%d capture eraser %s fail\n", err,
+		       (chip->capture_eraser_enable) ? "Enable" : "Disable");
+
+	mutex_unlock(&chip->audio_mutex);
+	return err;
+}
+
 static int sidetone_enable_ctl_set(struct snd_kcontrol *kcontrol,
 				   struct snd_ctl_elem_value *ucontrol)
 {
@@ -1464,7 +1498,7 @@ static SOC_ENUM_SINGLE_DECL(incall_capture_stream2_enum, 1, 2, incall_capture_st
 
 /* audio capture mic source */
 static const char *audio_capture_mic_source_texts[] = { "Default", "Builtin_MIC", "USB_MIC",
-						       "BT_MIC", "No MIC" };
+						       "BT_MIC", "No MIC", "ERASER" };
 static SOC_ENUM_SINGLE_DECL(audio_capture_mic_source_enum, 1, 0, audio_capture_mic_source_texts);
 
 /* Voice call mic source */
@@ -1623,6 +1657,9 @@ static struct snd_kcontrol_new snd_aoc_ctl[] = {
 	SOC_SINGLE_EXT("AoC USB Sink Channel Bitmap", SND_SOC_NOPM, 4, 0x00ffff,
 		       0, aoc_sink_channel_bitmap_ctl_get, NULL),
 
+	SOC_SINGLE_EXT("Audio Capture Eraser Enable", SND_SOC_NOPM, 0, 1, 0,
+		       audio_capture_eraser_enable_ctl_get, audio_capture_eraser_enable_ctl_set),
+
 	SOC_ENUM_EXT("Audio Capture Mic Source", audio_capture_mic_source_enum,
 		     audio_capture_mic_source_get, audio_capture_mic_source_set),
 
@@ -1691,6 +1728,7 @@ static struct snd_kcontrol_new snd_aoc_ctl[] = {
 		       incall_playback_mic_channel_ctl_set),
 
 
+
 	/* LVM enable 1/0 for comp offload */
 	SOC_SINGLE_EXT("LVM Enable", SND_SOC_NOPM, 0, 1, 0,
 		       lvm_enable_ctl_get, lvm_enable_ctl_set),
diff --git a/alsa/aoc_alsa_hw.c b/alsa/aoc_alsa_hw.c
index b8a4c0d..ab86cdc 100755
--- a/alsa/aoc_alsa_hw.c
+++ b/alsa/aoc_alsa_hw.c
@@ -351,6 +351,9 @@ int aoc_audio_capture_mic_prepare(struct aoc_chip *chip)
 	case BT_MIC:
 		mic_input_source = AP_INPUT_PROCESSOR_BT_INPUT_INDEX;
 		break;
+	case ERASER:
+		mic_input_source = AP_INPUT_PROCESSOR_ERASER_INPUT_INDEX;
+		break;
 	default:
 		pr_err("ERR in mic input source for audio capture mic source=%d\n",
 		       chip->audio_capture_mic_source);
@@ -1940,6 +1943,21 @@ int aoc_mic_record_gain_set(struct aoc_chip *chip, long val)
 	return 0;
 }
 
+int aoc_audio_capture_eraser_enable(struct aoc_chip *chip, long enable)
+{
+	int cmd_id, err = 0;
+
+	cmd_id = (enable == 1) ? CMD_AUDIO_INPUT_MIC_RECORD_AP_ENABLE_AEC_ID :
+				       CMD_AUDIO_INPUT_MIC_RECORD_AP_DISABLE_AEC_ID;
+	err = aoc_audio_control_simple_cmd(CMD_INPUT_CHANNEL, cmd_id, chip);
+	if (err < 0) {
+		pr_err("ERR:%d in aduio capture eraser %s\n", err, (enable) ? "enable" : "disable");
+		return err;
+	}
+
+	return 0;
+}
+
 int aoc_lvm_enable_get(struct aoc_chip *chip, long *enable)
 {
 	int err;
diff --git a/alsa/aoc_alsa_path.c b/alsa/aoc_alsa_path.c
index 5eae282..da32a1c 100644
--- a/alsa/aoc_alsa_path.c
+++ b/alsa/aoc_alsa_path.c
@@ -672,6 +672,21 @@ static struct snd_soc_dai_driver aoc_dai_drv[] = {
 	},
 
 	{
+		.capture = {
+			.stream_name = "ERASER_TX Capture",
+			.rates = SNDRV_PCM_RATE_8000_48000,
+			.formats = SNDRV_PCM_FMTBIT_S16_LE |
+					SNDRV_PCM_FMTBIT_S24_LE |
+					SNDRV_PCM_FMTBIT_S32_LE,
+			.channels_min = 1,
+			.channels_max = 4,
+		},
+		.ops = &be_dai_ops,
+		.name = "ERASER_TX",
+		.id = ERASER_TX,
+	},
+
+	{
 		.playback = {
 			.stream_name = "BT_RX Playback",
 			.rates = SNDRV_PCM_RATE_8000_48000,
@@ -836,6 +851,7 @@ static int be_prepare(struct snd_pcm_substream *stream, struct snd_soc_dai *dai)
 	mutex_lock(&path_mutex);
 	switch (dai->id) {
 	case INTERNAL_MIC_TX:
+	case ERASER_TX:
 	case BT_TX:
 	case USB_TX:
 		mutex_lock(&chip->audio_mutex);
@@ -871,6 +887,7 @@ static void be_shutdown(struct snd_pcm_substream *stream,
 	mutex_lock(&path_mutex);
 	switch (dai->id) {
 	case INTERNAL_MIC_TX:
+	case ERASER_TX:
 	case BT_TX:
 	case USB_TX:
 		mutex_lock(&chip->audio_mutex);
@@ -1501,6 +1518,8 @@ const struct snd_kcontrol_new ep1_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep1_tx_get, ep1_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep1_tx_get, ep1_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep1_tx_get, ep1_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep1_tx_get, ep1_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep1_tx_get, ep1_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep1_tx_get, ep1_tx_put),
@@ -1535,6 +1554,8 @@ const struct snd_kcontrol_new ep2_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep2_tx_get, ep2_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep2_tx_get, ep2_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep2_tx_get, ep2_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep2_tx_get, ep2_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep2_tx_get, ep2_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep2_tx_get, ep2_tx_put),
@@ -1569,6 +1590,8 @@ const struct snd_kcontrol_new ep3_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep3_tx_get, ep3_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep3_tx_get, ep3_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep3_tx_get, ep3_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep3_tx_get, ep3_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep3_tx_get, ep3_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep3_tx_get, ep3_tx_put),
@@ -1603,6 +1626,8 @@ const struct snd_kcontrol_new ep4_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep4_tx_get, ep4_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep4_tx_get, ep4_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep4_tx_get, ep4_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep4_tx_get, ep4_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep4_tx_get, ep4_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep4_tx_get, ep4_tx_put),
@@ -1637,6 +1662,8 @@ const struct snd_kcontrol_new ep5_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep5_tx_get, ep5_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep5_tx_get, ep5_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep5_tx_get, ep5_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep5_tx_get, ep5_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep5_tx_get, ep5_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep5_tx_get, ep5_tx_put),
@@ -1671,6 +1698,8 @@ const struct snd_kcontrol_new ep6_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, ep6_tx_get, ep6_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		ep6_tx_get, ep6_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		ep6_tx_get, ep6_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, ep6_tx_get, ep6_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, ep6_tx_get, ep6_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, ep6_tx_get, ep6_tx_put),
@@ -1704,6 +1733,8 @@ const struct snd_kcontrol_new voip_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, voip_tx_get, voip_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		voip_tx_get, voip_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		voip_tx_get, voip_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, voip_tx_get, voip_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, voip_tx_get, voip_tx_put),
 };
@@ -1736,6 +1767,8 @@ const struct snd_kcontrol_new nohost1_tx_ctrl[] = {
 	SOC_SINGLE_EXT("TDM_1_TX", SND_SOC_NOPM, TDM_1_TX, 1, 0, nohost1_tx_get, nohost1_tx_put),
 	SOC_SINGLE_EXT("INTERNAL_MIC_TX", SND_SOC_NOPM, INTERNAL_MIC_TX, 1, 0,
 		nohost1_tx_get, nohost1_tx_put),
+	SOC_SINGLE_EXT("ERASER_TX", SND_SOC_NOPM, ERASER_TX, 1, 0,
+		nohost1_tx_get, nohost1_tx_put),
 	SOC_SINGLE_EXT("BT_TX", SND_SOC_NOPM, BT_TX, 1, 0, nohost1_tx_get, nohost1_tx_put),
 	SOC_SINGLE_EXT("USB_TX", SND_SOC_NOPM, USB_TX, 1, 0, nohost1_tx_get, nohost1_tx_put),
 	SOC_SINGLE_EXT("INCALL_TX", SND_SOC_NOPM, INCALL_TX, 1, 0, nohost1_tx_get, nohost1_tx_put),
@@ -1794,6 +1827,8 @@ const struct snd_soc_dapm_widget aoc_widget[] = {
 	SND_SOC_DAPM_AIF_IN("TDM_1_TX", "TDM_1_TX", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_AIF_IN("INTERNAL_MIC_TX", "INTERNAL_MIC_TX",
 		0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("ERASER_TX", "ERASER_TX",
+		0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_AIF_IN("BT_TX", "BT_TX", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_AIF_IN("USB_TX", "USB_TX", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_AIF_IN("INCALL_TX", "INCALL_TX", 0, SND_SOC_NOPM, 0, 0),
@@ -1976,6 +2011,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP1 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP1 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP1 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP1 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP1 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP1 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP1 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -1987,6 +2023,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP2 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP2 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP2 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP2 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP2 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP2 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP2 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -1998,6 +2035,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP3 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP3 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP3 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP3 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP3 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP3 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP3 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -2009,6 +2047,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP4 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP4 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP4 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP4 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP4 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP4 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP4 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -2020,6 +2059,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP5 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP5 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP5 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP5 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP5 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP5 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP5 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -2031,6 +2071,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "EP6 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "EP6 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "EP6 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "EP6 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "EP6 TX Mixer", "BT_TX", "BT_TX" },
 	{ "EP6 TX Mixer", "USB_TX", "USB_TX" },
 	{ "EP6 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -2042,6 +2083,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "VOIP TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "VOIP TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "VOIP TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "VOIP TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "VOIP TX Mixer", "BT_TX", "BT_TX" },
 	{ "VOIP TX Mixer", "USB_TX", "USB_TX" },
 
@@ -2052,6 +2094,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "NoHost1 TX Mixer", "TDM_0_TX", "TDM_0_TX" },
 	{ "NoHost1 TX Mixer", "TDM_1_TX", "TDM_1_TX" },
 	{ "NoHost1 TX Mixer", "INTERNAL_MIC_TX", "INTERNAL_MIC_TX" },
+	{ "NoHost1 TX Mixer", "ERASER_TX", "ERASER_TX" },
 	{ "NoHost1 TX Mixer", "BT_TX", "BT_TX" },
 	{ "NoHost1 TX Mixer", "USB_TX", "USB_TX" },
 	{ "NoHost1 TX Mixer", "INCALL_TX", "INCALL_TX" },
@@ -2062,6 +2105,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "I2S_1_TX", NULL, "HW_SOURCE" },
 	{ "I2S_2_TX", NULL, "HW_SOURCE" },
 	{ "INTERNAL_MIC_TX", NULL, "HW_SOURCE" },
+	{ "ERASER_TX", NULL, "HW_SOURCE" },
 	{ "BT_TX", NULL, "HW_SOURCE" },
 	{ "USB_TX", NULL, "HW_SOURCE" },
 	{ "INCALL_TX", NULL, "HW_SOURCE" },
@@ -2085,6 +2129,7 @@ static const struct snd_soc_dapm_route aoc_routes[] = {
 	{ "TDM_0_TX", NULL, "TDM_0_TX Capture" },
 	{ "TDM_1_TX", NULL, "TDM_1_TX Capture" },
 	{ "INTERNAL_MIC_TX", NULL, "INTERNAL_MIC_TX Capture" },
+	{ "ERASER_TX", NULL, "ERASER_TX Capture" },
 	{ "BT_TX", NULL, "BT_TX Capture" },
 	{ "USB_TX", NULL, "USB_TX Capture" },
 	{ "INCALL_TX", NULL, "INCALL_TX Capture" },
diff --git a/alsa/google-aoc-enum.h b/alsa/google-aoc-enum.h
index 7618100..3b043ba 100644
--- a/alsa/google-aoc-enum.h
+++ b/alsa/google-aoc-enum.h
@@ -45,6 +45,7 @@ enum {
 	PORT_INCALL_RX,
 	PORT_INCALL_TX,
 	PORT_HAPTIC_RX,
+	PORT_ERASER_TX,
 	PORT_MAX,
 };
 
@@ -95,6 +96,8 @@ enum {
 #define USB_RX			(AOC_BE|AOC_RX|PORT_USB_RX)
 #define USB_TX			(AOC_BE|AOC_TX|PORT_USB_TX)
 
+#define ERASER_TX		(AOC_BE|AOC_TX|PORT_ERASER_TX)
+
 #define INCALL_RX		(AOC_BE|AOC_RX|PORT_INCALL_RX)
 #define INCALL_TX		(AOC_BE|AOC_TX|PORT_INCALL_TX)