ASoC: ak4642: Add Digital Playback Volume control (a300de3c) · Commits · e / devices / android_kernel_teracube_mt6765

sound/soc/codecs/ak4642.c

+21 −3

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@
		#include <linux/slab.h>
		#include <sound/soc-dapm.h>
		#include <sound/initval.h>
		#include <sound/tlv.h>

		#include "ak4642.h"

		@@ -103,6 +104,23 @@

		struct snd_soc_codec_device soc_codec_dev_ak4642;

		/*
		* Playback Volume (table 39)
		*
		* max : 0x00 : +12.0 dB
		* ( 0.5 dB step )
		* min : 0xFE : -115.0 dB
		* mute: 0xFF
		*/
		static const DECLARE_TLV_DB_SCALE(out_tlv, -11500, 50, 1);

		static const struct snd_kcontrol_new ak4642_snd_controls[] = {

		SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC,
		0, 0xFF, 1, out_tlv),
		};


		/* codec private data */
		struct ak4642_priv {
		struct snd_soc_codec codec;
		@@ -196,7 +214,6 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
		*
		* PLL, Master Mode
		* Audio I/F Format :MSB justified (ADC & DAC)
		* Digital Volume: -8dB
		* Bass Boost Level : Middle
		*
		* This operation came from example code of
		@@ -206,8 +223,6 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
		ak4642_write(codec, 0x0e, 0x19);
		ak4642_write(codec, 0x09, 0x91);
		ak4642_write(codec, 0x0c, 0x91);
		ak4642_write(codec, 0x0a, 0x28);
		ak4642_write(codec, 0x0d, 0x28);
		ak4642_write(codec, 0x00, 0x64);
		snd_soc_update_bits(codec, PW_MGMT2, PMHP_MASK, PMHP);
		snd_soc_update_bits(codec, PW_MGMT2, HPMTN, HPMTN);
		@@ -540,6 +555,9 @@ static int ak4642_probe(struct platform_device *pdev)
		goto pcm_err;
		}

		snd_soc_add_controls(ak4642_codec, ak4642_snd_controls,
		ARRAY_SIZE(ak4642_snd_controls));

		dev_info(&pdev->dev, "AK4642 Audio Codec %s", AK4642_VERSION);
		return ret;