Commit e48b46ba authored by Liam Girdwood's avatar Liam Girdwood
Browse files

ASoC: twl6040 - Add method to query optimum PDM_DL1 gain 



The DL1 PDM interface adds a little gain depending on the output device.
Add a method to retrieve the gain value for machine driver usage.

Signed-off-by: default avatarLiam Girdwood <lrg@ti.com>
parent f75a8ff6

sound/soc/codecs/twl6040.c

+23 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/initval.h>

#include <sound/tlv.h>
@@ -1012,6 +1013,28 @@ static int twl6040_pll_put_enum(struct snd_kcontrol *kcontrol, 
	return 0;

}



int twl6040_get_dl1_gain(struct snd_soc_codec *codec)

{

	struct snd_soc_dapm_context *dapm = &codec->dapm;



	if (snd_soc_dapm_get_pin_status(dapm, "EP"))

		return -1; /* -1dB */



	if (snd_soc_dapm_get_pin_status(dapm, "HSOR") ||

		snd_soc_dapm_get_pin_status(dapm, "HSOL")) {



		u8 val = snd_soc_read(codec, TWL6040_REG_HSLCTL);

		if (val & TWL6040_HSDACMODE)

			/* HSDACL in LP mode */

			return -8; /* -8dB */

		else

			/* HSDACL in HP mode */

			return -1; /* -1dB */

	}

	return 0; /* 0dB */

}

EXPORT_SYMBOL_GPL(twl6040_get_dl1_gain);



int twl6040_get_clk_id(struct snd_soc_codec *codec)

{

	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

sound/soc/codecs/twl6040.h

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ enum twl6040_trim { 
#define TWL6040_HSF_TRIM_LEFT(x)	(x & 0x0f)

#define TWL6040_HSF_TRIM_RIGHT(x)	((x >> 4) & 0x0f)



int twl6040_get_dl1_gain(struct snd_soc_codec *codec);

void twl6040_hs_jack_detect(struct snd_soc_codec *codec,

			    struct snd_soc_jack *jack, int report);

int twl6040_get_clk_id(struct snd_soc_codec *codec);