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Commit de5eaf84 authored by Ashish Chavan's avatar Ashish Chavan Committed by Mark Brown
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ASoC: da7210: Add support for ALC and Noise suppression 



This patch adds controls to set following ALC parameters,
 - Max gain, Min gain, Noise gain, Attack rate, Release rate and delay

It also adds a switch to enable/disable noise suppression.

As per DA7210 data sheet, ALC and noise suppression can be enabled
only if certain conditions are met. This condition checks are handled
by simply using "_EXT" version of controls to capture change events.

Signed-off-by: default avatarAshish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: default avatarDavid Dajun Chen <dchen@diasemi.com>
Acked-by: default avatarLiam Girdwod <lrg@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 5eda1949

sound/soc/codecs/da7210.c

+110 −0
Original line number Diff line number Diff line
@@ -26,11 +26,15 @@ 
#include <sound/tlv.h>



/* DA7210 register space */

#define DA7210_CONTROL			0x01

#define DA7210_STATUS			0x02

#define DA7210_STARTUP1			0x03

#define DA7210_MIC_L			0x07

#define DA7210_MIC_R			0x08

#define DA7210_AUX1_L			0x09

#define DA7210_AUX1_R			0x0A

#define DA7210_AUX2			0x0B

#define DA7210_IN_GAIN			0x0C

#define DA7210_INMIX_L			0x0D

#define DA7210_INMIX_R			0x0E

#define DA7210_ADC_HPF			0x0F
@@ -59,6 +63,12 @@ 
#define DA7210_PLL_DIV2			0x2A

#define DA7210_PLL_DIV3			0x2B

#define DA7210_PLL			0x2C

#define DA7210_ALC_MAX			0x83

#define DA7210_ALC_MIN			0x84

#define DA7210_ALC_NOIS			0x85

#define DA7210_ALC_ATT			0x86

#define DA7210_ALC_REL			0x87

#define DA7210_ALC_DEL			0x88

#define DA7210_A_HID_UNLOCK		0x8A

#define DA7210_A_TEST_UNLOCK		0x8B

#define DA7210_A_PLL1			0x90
@@ -81,6 +91,7 @@ 
#define DA7210_IN_R_EN			(1 << 7)



/* ADC bit fields */

#define DA7210_ADC_ALC_EN		(1 << 0)

#define DA7210_ADC_L_EN			(1 << 3)

#define DA7210_ADC_R_EN			(1 << 7)
@@ -150,6 +161,29 @@ 
/* SOFTMUTE bit fields */

#define DA7210_RAMP_EN			(1 << 6)



/* CONTROL bit fields */

#define DA7210_NOISE_SUP_EN		(1 << 3)



/* IN_GAIN bit fields */

#define DA7210_INPGA_L_VOL		(0x0F << 0)

#define DA7210_INPGA_R_VOL		(0xF0 << 0)



/* ZERO_CROSS bit fields */

#define DA7210_AUX1_L_ZC		(1 << 0)

#define DA7210_AUX1_R_ZC		(1 << 1)

#define DA7210_HP_L_ZC			(1 << 6)

#define DA7210_HP_R_ZC			(1 << 7)



/* AUX1_L bit fields */

#define DA7210_AUX1_L_VOL		(0x3F << 0)



/* AUX1_R bit fields */

#define DA7210_AUX1_R_VOL		(0x3F << 0)



/* Minimum INPGA and AUX1 volume to enable noise suppression */

#define DA7210_INPGA_MIN_VOL_NS		0x0A  /* 10.5dB */

#define DA7210_AUX1_MIN_VOL_NS		0x35  /* 6dB */



#define DA7210_VERSION "0.0.1"



/*
@@ -202,6 +236,69 @@ static const char *da7210_hp_mode_txt[] = { 
static const struct soc_enum da7210_hp_mode_sel =

	SOC_ENUM_SINGLE(DA7210_HP_CFG, 0, 2, da7210_hp_mode_txt);



/* ALC can be enabled only if noise suppression is disabled */

static int da7210_put_alc_sw(struct snd_kcontrol *kcontrol,

			     struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);



	if (ucontrol->value.integer.value[0]) {

		/* Check if noise suppression is enabled */

		if (snd_soc_read(codec, DA7210_CONTROL) & DA7210_NOISE_SUP_EN) {

			dev_dbg(codec->dev,

				"Disable noise suppression to enable ALC\n");

			return -EINVAL;

		}

	}

	/* If all conditions are met or we are actually disabling ALC */

	return snd_soc_put_volsw(kcontrol, ucontrol);

}



/* Noise suppression can be enabled only if following conditions are met

 *  ALC disabled

 *  ZC enabled for HP and AUX1 PGA

 *  INPGA_L_VOL and INPGA_R_VOL >= 10.5 dB

 *  AUX1_L_VOL and AUX1_R_VOL >= 6 dB

 */

static int da7210_put_noise_sup_sw(struct snd_kcontrol *kcontrol,

				   struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	u8 val;



	if (ucontrol->value.integer.value[0]) {

		/* Check if ALC is enabled */

		if (snd_soc_read(codec, DA7210_ADC) & DA7210_ADC_ALC_EN)

			goto err;



		/* Check ZC for HP and AUX1 PGA */

		if ((snd_soc_read(codec, DA7210_ZERO_CROSS) &

			(DA7210_AUX1_L_ZC | DA7210_AUX1_R_ZC | DA7210_HP_L_ZC |

			DA7210_HP_R_ZC)) != (DA7210_AUX1_L_ZC |

			DA7210_AUX1_R_ZC | DA7210_HP_L_ZC | DA7210_HP_R_ZC))

			goto err;



		/* Check INPGA_L_VOL and INPGA_R_VOL */

		val = snd_soc_read(codec, DA7210_IN_GAIN);

		if (((val & DA7210_INPGA_L_VOL) < DA7210_INPGA_MIN_VOL_NS) ||

			(((val & DA7210_INPGA_R_VOL) >> 4) <

			DA7210_INPGA_MIN_VOL_NS))

			goto err;



		/* Check AUX1_L_VOL and AUX1_R_VOL */

		if (((snd_soc_read(codec, DA7210_AUX1_L) & DA7210_AUX1_L_VOL) <

		    DA7210_AUX1_MIN_VOL_NS) ||

		    ((snd_soc_read(codec, DA7210_AUX1_R) & DA7210_AUX1_R_VOL) <

		    DA7210_AUX1_MIN_VOL_NS))

			goto err;

	}

	/* If all conditions are met or we are actually disabling Noise sup */

	return snd_soc_put_volsw(kcontrol, ucontrol);



err:

	return -EINVAL;

}



static const struct snd_kcontrol_new da7210_snd_controls[] = {



	SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
@@ -260,6 +357,19 @@ static const struct snd_kcontrol_new da7210_snd_controls[] = { 
	SOC_DOUBLE("Headphone ZC Switch", DA7210_ZERO_CROSS, 6, 7, 1, 0),



	SOC_ENUM("Headphone Class", da7210_hp_mode_sel),



	/* ALC controls */

	SOC_SINGLE_EXT("ALC Enable Switch", DA7210_ADC, 0, 1, 0,

		       snd_soc_get_volsw, da7210_put_alc_sw),

	SOC_SINGLE("ALC Capture Max Volume", DA7210_ALC_MAX, 0, 0x3F, 0),

	SOC_SINGLE("ALC Capture Min Volume", DA7210_ALC_MIN, 0, 0x3F, 0),

	SOC_SINGLE("ALC Capture Noise Volume", DA7210_ALC_NOIS, 0, 0x3F, 0),

	SOC_SINGLE("ALC Capture Attack Rate", DA7210_ALC_ATT, 0, 0xFF, 0),

	SOC_SINGLE("ALC Capture Release Rate", DA7210_ALC_REL, 0, 0xFF, 0),

	SOC_SINGLE("ALC Capture Release Delay", DA7210_ALC_DEL, 0, 0xFF, 0),



	SOC_SINGLE_EXT("Noise Suppression Enable Switch", DA7210_CONTROL, 3, 1,

		       0, snd_soc_get_volsw, da7210_put_noise_sup_sw),

};



/* Codec private data */