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ASoC: ak4642: Add Digital Playback Volume control 

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Kuninori Morimoto 2010-07-01 14:23:45 +09:00 committed by Mark Brown
parent 338de9d9da
commit a300de3cff
1 changed files with 21 additions and 3 deletions
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24
sound/soc/codecs/ak4642.c
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@ -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;