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Commit f97d0c6d authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
Browse files

ASoC: AD1836: Add input gain control for ADC2 



The AD1836 has a PGA for its second ADC. This patch adds a control for
adjusting the the gain of the PGA.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 583eadab

sound/soc/codecs/ad1836.c

+11 −0
Original line number Diff line number Diff line
@@ -124,6 +124,13 @@ static const struct snd_soc_dapm_route ad183x_dapm_routes[] = { 
	{ "ADC", NULL, "ADC_PWR" },

};



static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);



static const struct snd_kcontrol_new ad1836_controls[] = {

	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD183X_ADC_CTRL1, 3, 0, 4, 0,

	    ad1836_in_tlv),

};



/*

 * DAI ops entries

 */
@@ -280,6 +287,10 @@ static int ad1836_probe(struct snd_soc_codec *codec) 
	if (ad1836->type == AD1836) {

		/* left/right diff:PGA/MUX */

		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);

		ret = snd_soc_add_controls(codec, ad1836_controls,

				ARRAY_SIZE(ad1836_controls));

		if (ret)

			return ret;

	} else {

		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);

	}