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ASoC: TWL4030: Change the Master volume control to TLV

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TWL4030 FGAIN volume control has a range:
-62 to 0 dB in 1 dB steps, 0 in the FGAIN means mute.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Peter Ujfalusi 2008-11-24 13:49:35 +02:00 committed by Mark Brown
parent f8d05bdbb0
commit c10b82cf08
1 changed files with 9 additions and 2 deletions
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11
sound/soc/codecs/twl4030.c
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@ -33,6 +33,7 @@
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "twl4030.h"
@ -189,10 +190,16 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
}
/*
* FGAIN volume control:
* from -62 to 0 dB in 1 dB steps (mute instead of -63 dB)
*/
static DECLARE_TLV_DB_SCALE(master_tlv, -6300, 100, 1);
static const struct snd_kcontrol_new twl4030_snd_controls[] = {
SOC_DOUBLE_R("Master Playback Volume",
SOC_DOUBLE_R_TLV("Master Playback Volume",
TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA,
0, 0x3f, 0),
0, 0x3f, 0, master_tlv),
SOC_DOUBLE_R("Capture Volume",
TWL4030_REG_ATXL1PGA, TWL4030_REG_ATXR1PGA,
0, 0x1f, 0),