Unverified Commit 8ee78493 authored by Prasad Kumpatla's avatar Prasad Kumpatla Committed by Mark Brown
Browse files

ASoC: codecs: wcd937x: add capture dapm widgets 



This patch adds required dapm widgets for capture path.

Signed-off-by: default avatarPrasad Kumpatla <quic_pkumpatl@quicinc.com>
Co-developed-by: default avatarMohammad Rafi Shaik <quic_mohs@quicinc.com>
Signed-off-by: default avatarMohammad Rafi Shaik <quic_mohs@quicinc.com>
Link: https://lore.kernel.org/r/20240524035535.3119208-7-quic_mohs@quicinc.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 57fe69db

sound/soc/codecs/wcd937x.c

+404 −0
Original line number Diff line number Diff line
@@ -915,6 +915,145 @@ static int wcd937x_get_micb_vout_ctl_val(u32 micb_mv) 
	return (micb_mv - 1000) / 50;

}



static int wcd937x_tx_swr_ctrl(struct snd_soc_dapm_widget *w,

			       struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	struct wcd937x_priv *wcd937x = snd_soc_component_get_drvdata(component);

	bool use_amic3 = snd_soc_component_read(component, WCD937X_TX_NEW_TX_CH2_SEL) & BIT(7);



	/* Enable BCS for Headset mic */

	if (event == SND_SOC_DAPM_PRE_PMU && strnstr(w->name, "ADC", sizeof("ADC")))

		if (w->shift == 1 && !use_amic3)

			set_bit(AMIC2_BCS_ENABLE, &wcd937x->status_mask);



	return 0;

}



static int wcd937x_codec_enable_adc(struct snd_soc_dapm_widget *w,

				    struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	struct wcd937x_priv *wcd937x = snd_soc_component_get_drvdata(component);



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		atomic_inc(&wcd937x->ana_clk_count);

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_DIG_CLK_CTL, BIT(7), BIT(7));

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_ANA_CLK_CTL, BIT(3), BIT(3));

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_ANA_CLK_CTL, BIT(4), BIT(4));

		break;

	case SND_SOC_DAPM_POST_PMD:

		if (w->shift == 1 && test_bit(AMIC2_BCS_ENABLE, &wcd937x->status_mask))

			clear_bit(AMIC2_BCS_ENABLE, &wcd937x->status_mask);



		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_ANA_CLK_CTL, BIT(3), 0x00);

		break;

	}



	return 0;

}



static int wcd937x_enable_req(struct snd_soc_dapm_widget *w,

			      struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	struct wcd937x_priv *wcd937x = snd_soc_component_get_drvdata(component);



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_REQ_CTL, BIT(1), BIT(1));

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_REQ_CTL, BIT(0), 0x00);

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH2, BIT(6), BIT(6));

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH3_HPF, BIT(6), BIT(6));

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_DIG_CLK_CTL, 0x70, 0x70);

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH1, BIT(7), BIT(7));

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH2, BIT(6), 0x00);

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH2, BIT(7), BIT(7));

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH3, BIT(7), BIT(7));

		break;

	case SND_SOC_DAPM_POST_PMD:

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH1, BIT(7), 0x00);

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH2, BIT(7), 0x00);

		snd_soc_component_update_bits(component,

					      WCD937X_ANA_TX_CH3, BIT(7), 0x00);

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_DIG_CLK_CTL, BIT(4), 0x00);



		atomic_dec(&wcd937x->ana_clk_count);

		if (atomic_read(&wcd937x->ana_clk_count) <= 0) {

			snd_soc_component_update_bits(component,

						      WCD937X_DIGITAL_CDC_ANA_CLK_CTL,

						      BIT(4), 0x00);

			atomic_set(&wcd937x->ana_clk_count, 0);

		}



		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_DIG_CLK_CTL,

					      BIT(7), 0x00);

		break;

	}



	return 0;

}



static int wcd937x_codec_enable_dmic(struct snd_soc_dapm_widget *w,

				     struct snd_kcontrol *kcontrol,

				     int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	u16 dmic_clk_reg;



	switch (w->shift) {

	case 0:

	case 1:

		dmic_clk_reg = WCD937X_DIGITAL_CDC_DMIC1_CTL;

		break;

	case 2:

	case 3:

		dmic_clk_reg = WCD937X_DIGITAL_CDC_DMIC2_CTL;

		break;

	case 4:

	case 5:

		dmic_clk_reg = WCD937X_DIGITAL_CDC_DMIC3_CTL;

		break;

	default:

		dev_err(component->dev, "Invalid DMIC Selection\n");

		return -EINVAL;

	}



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		snd_soc_component_update_bits(component,

					      WCD937X_DIGITAL_CDC_DIG_CLK_CTL,

					      BIT(7), BIT(7));

		snd_soc_component_update_bits(component,

					      dmic_clk_reg, 0x07, BIT(1));

		snd_soc_component_update_bits(component,

					      dmic_clk_reg, BIT(3), BIT(3));

		snd_soc_component_update_bits(component,

					      dmic_clk_reg, 0x70, BIT(5));

		break;

	}



	return 0;

}



static int wcd937x_micbias_control(struct snd_soc_component *component,

				   int micb_num, int req, bool is_dapm)

{
@@ -1026,6 +1165,82 @@ static int wcd937x_micbias_control(struct snd_soc_component *component, 
	return 0;

}



static int __wcd937x_codec_enable_micbias(struct snd_soc_dapm_widget *w,

					  int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	int micb_num;



	if (strnstr(w->name, "MIC BIAS1", sizeof("MIC BIAS1")))

		micb_num = MIC_BIAS_1;

	else if (strnstr(w->name, "MIC BIAS2", sizeof("MIC BIAS2")))

		micb_num = MIC_BIAS_2;

	else if (strnstr(w->name, "MIC BIAS3", sizeof("MIC BIAS3")))

		micb_num = MIC_BIAS_3;

	else

		return -EINVAL;



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		wcd937x_micbias_control(component, micb_num,

					MICB_ENABLE, true);

		break;

	case SND_SOC_DAPM_POST_PMU:

		usleep_range(1000, 1100);

		break;

	case SND_SOC_DAPM_POST_PMD:

		wcd937x_micbias_control(component, micb_num,

					MICB_DISABLE, true);

		break;

	}



	return 0;

}



static int wcd937x_codec_enable_micbias(struct snd_soc_dapm_widget *w,

					struct snd_kcontrol *kcontrol,

					int event)

{

	return __wcd937x_codec_enable_micbias(w, event);

}



static int __wcd937x_codec_enable_micbias_pullup(struct snd_soc_dapm_widget *w,

						 int event)

{

	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

	int micb_num;



	if (strnstr(w->name, "VA MIC BIAS1", sizeof("VA MIC BIAS1")))

		micb_num = MIC_BIAS_1;

	else if (strnstr(w->name, "VA MIC BIAS2", sizeof("VA MIC BIAS2")))

		micb_num = MIC_BIAS_2;

	else if (strnstr(w->name, "VA MIC BIAS3", sizeof("VA MIC BIAS3")))

		micb_num = MIC_BIAS_3;

	else

		return -EINVAL;



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		wcd937x_micbias_control(component, micb_num, MICB_PULLUP_ENABLE, true);

		break;

	case SND_SOC_DAPM_POST_PMU:

		usleep_range(1000, 1100);

		break;

	case SND_SOC_DAPM_POST_PMD:

		wcd937x_micbias_control(component, micb_num, MICB_PULLUP_DISABLE, true);

		break;

	}



	return 0;

}



static int wcd937x_codec_enable_micbias_pullup(struct snd_soc_dapm_widget *w,

					       struct snd_kcontrol *kcontrol,

					       int event)

{

	return __wcd937x_codec_enable_micbias_pullup(w, event);

}



static int wcd937x_connect_port(struct wcd937x_sdw_priv *wcd, u8 port_idx, u8 ch_id, bool enable)

{

	struct sdw_port_config *port_config = &wcd->port_config[port_idx - 1];
@@ -1912,6 +2127,42 @@ static const struct snd_kcontrol_new wcd937x_snd_controls[] = { 
		       wcd937x_get_swr_port, wcd937x_set_swr_port),

};



static const struct snd_kcontrol_new adc1_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new adc2_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new adc3_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic1_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic2_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic3_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic4_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic5_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new dmic6_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_kcontrol_new ear_rdac_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};
@@ -1928,22 +2179,76 @@ static const struct snd_kcontrol_new hphr_rdac_switch[] = { 
	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const char * const adc2_mux_text[] = {

	"INP2", "INP3"

};



static const char * const rdac3_mux_text[] = {

	"RX1", "RX3"

};



static const struct soc_enum adc2_enum =

	SOC_ENUM_SINGLE(WCD937X_TX_NEW_TX_CH2_SEL, 7,

			ARRAY_SIZE(adc2_mux_text), adc2_mux_text);



static const struct soc_enum rdac3_enum =

	SOC_ENUM_SINGLE(WCD937X_DIGITAL_CDC_EAR_PATH_CTL, 0,

			ARRAY_SIZE(rdac3_mux_text), rdac3_mux_text);



static const struct snd_kcontrol_new tx_adc2_mux = SOC_DAPM_ENUM("ADC2 MUX Mux", adc2_enum);



static const struct snd_kcontrol_new rx_rdac3_mux = SOC_DAPM_ENUM("RDAC3_MUX Mux", rdac3_enum);



static const struct snd_soc_dapm_widget wcd937x_dapm_widgets[] = {

	/* Input widgets */

	SND_SOC_DAPM_INPUT("AMIC1"),

	SND_SOC_DAPM_INPUT("AMIC2"),

	SND_SOC_DAPM_INPUT("AMIC3"),

	SND_SOC_DAPM_INPUT("IN1_HPHL"),

	SND_SOC_DAPM_INPUT("IN2_HPHR"),

	SND_SOC_DAPM_INPUT("IN3_AUX"),



	/* TX widgets */

	SND_SOC_DAPM_ADC_E("ADC1", NULL, SND_SOC_NOPM, 0, 0,

			   wcd937x_codec_enable_adc,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("ADC2", NULL, SND_SOC_NOPM, 1, 0,

			   wcd937x_codec_enable_adc,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_MIXER_E("ADC1 REQ", SND_SOC_NOPM, 0, 0,

			     NULL, 0, wcd937x_enable_req,

			     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("ADC2 REQ", SND_SOC_NOPM, 0, 0,

			     NULL, 0, wcd937x_enable_req,

			     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_MUX("ADC2 MUX", SND_SOC_NOPM, 0, 0, &tx_adc2_mux),



	/* TX mixers */

	SND_SOC_DAPM_MIXER_E("ADC1_MIXER", SND_SOC_NOPM, 0, 0,

			     adc1_switch, ARRAY_SIZE(adc1_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("ADC2_MIXER", SND_SOC_NOPM, 1, 0,

			     adc2_switch, ARRAY_SIZE(adc2_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),



	/* MIC_BIAS widgets */

	SND_SOC_DAPM_SUPPLY("MIC BIAS1", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY("MIC BIAS2", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY("MIC BIAS3", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_SUPPLY("VDD_BUCK", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_vdd_buck,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
@@ -2007,11 +2312,101 @@ static const struct snd_soc_dapm_widget wcd937x_dapm_widgets[] = { 
	SND_SOC_DAPM_MIXER("HPHR_RDAC", SND_SOC_NOPM, 0, 0,

			   hphr_rdac_switch, ARRAY_SIZE(hphr_rdac_switch)),



	/* TX output widgets */

	SND_SOC_DAPM_OUTPUT("ADC1_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("ADC2_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("ADC3_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("WCD_TX_OUTPUT"),



	/* RX output widgets */

	SND_SOC_DAPM_OUTPUT("EAR"),

	SND_SOC_DAPM_OUTPUT("AUX"),

	SND_SOC_DAPM_OUTPUT("HPHL"),

	SND_SOC_DAPM_OUTPUT("HPHR"),



	/* MIC_BIAS pull up widgets */

	SND_SOC_DAPM_SUPPLY("VA MIC BIAS1", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias_pullup,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY("VA MIC BIAS2", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias_pullup,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SUPPLY("VA MIC BIAS3", SND_SOC_NOPM, 0, 0,

			    wcd937x_codec_enable_micbias_pullup,

			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			    SND_SOC_DAPM_POST_PMD),

};



static const struct snd_soc_dapm_widget wcd9375_dapm_widgets[] = {

	/* Input widgets */

	SND_SOC_DAPM_INPUT("AMIC4"),



	/* TX widgets */

	SND_SOC_DAPM_ADC_E("ADC3", NULL, SND_SOC_NOPM, 2, 0,

			   wcd937x_codec_enable_adc,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_MIXER_E("ADC3 REQ", SND_SOC_NOPM, 0, 0,

			     NULL, 0, wcd937x_enable_req,

			     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_ADC_E("DMIC1", NULL, SND_SOC_NOPM, 0, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("DMIC2", NULL, SND_SOC_NOPM, 1, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("DMIC3", NULL, SND_SOC_NOPM, 2, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("DMIC4", NULL, SND_SOC_NOPM, 3, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("DMIC5", NULL, SND_SOC_NOPM, 4, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_ADC_E("DMIC6", NULL, SND_SOC_NOPM, 5, 0,

			   wcd937x_codec_enable_dmic,

			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	/* TX mixer widgets */

	SND_SOC_DAPM_MIXER_E("DMIC1_MIXER", SND_SOC_NOPM, 0,

			     0, dmic1_switch, ARRAY_SIZE(dmic1_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("DMIC2_MIXER", SND_SOC_NOPM, 1,

			     0, dmic2_switch, ARRAY_SIZE(dmic2_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("DMIC3_MIXER", SND_SOC_NOPM, 2,

			     0, dmic3_switch, ARRAY_SIZE(dmic3_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("DMIC4_MIXER", SND_SOC_NOPM, 3,

			     0, dmic4_switch, ARRAY_SIZE(dmic4_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("DMIC5_MIXER", SND_SOC_NOPM, 4,

			     0, dmic5_switch, ARRAY_SIZE(dmic5_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("DMIC6_MIXER", SND_SOC_NOPM, 5,

			     0, dmic6_switch, ARRAY_SIZE(dmic6_switch),

			     wcd937x_tx_swr_ctrl, SND_SOC_DAPM_PRE_PMU |

			     SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_MIXER_E("ADC3_MIXER", SND_SOC_NOPM, 2, 0, adc3_switch,

			     ARRAY_SIZE(adc3_switch), wcd937x_tx_swr_ctrl,

			     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),



	/* Output widgets */

	SND_SOC_DAPM_OUTPUT("DMIC1_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("DMIC2_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("DMIC3_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("DMIC4_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("DMIC5_OUTPUT"),

	SND_SOC_DAPM_OUTPUT("DMIC6_OUTPUT"),

};



static int wcd937x_set_micbias_data(struct wcd937x_priv *wcd937x)
@@ -2143,6 +2538,15 @@ static int wcd937x_soc_codec_probe(struct snd_soc_component *component) 
	disable_irq_nosync(wcd937x->hphl_pdm_wd_int);

	disable_irq_nosync(wcd937x->aux_pdm_wd_int);



	if (wcd937x->chipid == CHIPID_WCD9375) {

		ret = snd_soc_dapm_new_controls(dapm, wcd9375_dapm_widgets,

						ARRAY_SIZE(wcd9375_dapm_widgets));

		if (ret < 0) {

			dev_err(component->dev, "Failed to add snd_ctls\n");

			return ret;

		}

	}



	ret = wcd937x_mbhc_init(component);

	if (ret)

		dev_err(component->dev, "mbhc initialization failed\n");