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Commit 42ffb9c6 authored by Vidyakumar Athota's avatar Vidyakumar Athota
Browse files

ASoC: wcd9335: add High-Z mode support to dmic pins 



Currently DMIC pins are configured to drive either high or low mode
but not High-Z mode. There is a requirement to put the DMIC pins in
High-Z mode depends on the usecase in runtime. This change adds
support to drive High-Z state for DMICs through mixer controls.

Change-Id: I6fe76dff757384a634ab173c349b8f87a4fc4195
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
parent 848b312e

sound/soc/codecs/wcd9335.c

+106 −0
Original line number Diff line number Diff line
@@ -5130,6 +5130,94 @@ static int tasha_mad_input_put(struct snd_kcontrol *kcontrol, 
	return 0;

}



static int tasha_pinctl_mode_get(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);

	u16 ctl_reg;

	u8 reg_val, pinctl_position;



	pinctl_position = ((struct soc_multi_mixer_control *)

					kcontrol->private_value)->shift;

	switch (pinctl_position >> 3) {

	case 0:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_0;

		break;

	case 1:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_1;

		break;

	case 2:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_2;

		break;

	case 3:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_3;

		break;

	default:

		dev_err(codec->dev, "%s: Invalid pinctl position = %d\n",

			__func__, pinctl_position);

		return -EINVAL;

	}



	reg_val = snd_soc_read(codec, ctl_reg);

	reg_val = (reg_val >> (pinctl_position & 0x07)) & 0x1;

	ucontrol->value.integer.value[0] = reg_val;



	return 0;

}



static int tasha_pinctl_mode_put(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);

	struct tasha_priv *tasha = snd_soc_codec_get_drvdata(codec);

	u16 ctl_reg, cfg_reg;

	u8 ctl_val, cfg_val, pinctl_position, pinctl_mode, mask;



	/* 1- high or low; 0- high Z */

	pinctl_mode = ucontrol->value.integer.value[0];

	pinctl_position = ((struct soc_multi_mixer_control *)

					kcontrol->private_value)->shift;



	switch (pinctl_position >> 3) {

	case 0:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_0;

		break;

	case 1:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_1;

		break;

	case 2:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_2;

		break;

	case 3:

		ctl_reg = WCD9335_TEST_DEBUG_PIN_CTL_OE_3;

		break;

	default:

		dev_err(codec->dev, "%s: Invalid pinctl position = %d\n",

			__func__, pinctl_position);

		return -EINVAL;

	}



	ctl_val = pinctl_mode << (pinctl_position & 0x07);

	mask = 1 << (pinctl_position & 0x07);

	snd_soc_update_bits(codec, ctl_reg, mask, ctl_val);



	cfg_reg = WCD9335_TLMM_BIST_MODE_PINCFG + pinctl_position;

	if (!pinctl_mode) {

		if (tasha->intf_type == WCD9XXX_INTERFACE_TYPE_SLIMBUS)

			cfg_val = 0x4;

		else

			cfg_val = 0xC;

	} else {

		cfg_val = 0;

	}

	snd_soc_update_bits(codec, cfg_reg, 0x07, cfg_val);



	dev_dbg(codec->dev, "%s: reg=0x%x mask=0x%x val=%d reg=0x%x val=%d\n",

			__func__, ctl_reg, mask, ctl_val, cfg_reg, cfg_val);



	return 0;

}



static const char * const rx_hph_mode_mux_text[] = {

	"CLS_H_INVALID", "CLS_H_HIFI", "CLS_H_LP", "CLS_AB"

};
@@ -5291,6 +5379,24 @@ static const struct snd_kcontrol_new tasha_snd_controls[] = { 


	SOC_ENUM_EXT("MAD Input", tasha_conn_mad_enum,

		     tasha_mad_input_get, tasha_mad_input_put),



	SOC_SINGLE_EXT("DMIC1_CLK_PIN_MODE", SND_SOC_NOPM, 17, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),



	SOC_SINGLE_EXT("DMIC1_DATA_PIN_MODE", SND_SOC_NOPM, 18, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),



	SOC_SINGLE_EXT("DMIC2_CLK_PIN_MODE", SND_SOC_NOPM, 19, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),



	SOC_SINGLE_EXT("DMIC2_DATA_PIN_MODE", SND_SOC_NOPM, 20, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),



	SOC_SINGLE_EXT("DMIC3_CLK_PIN_MODE", SND_SOC_NOPM, 21, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),



	SOC_SINGLE_EXT("DMIC3_DATA_PIN_MODE", SND_SOC_NOPM, 22, 1, 0,

		       tasha_pinctl_mode_get, tasha_pinctl_mode_put),

};



static int tasha_put_dec_enum(struct snd_kcontrol *kcontrol,