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ASoC: TWL4030: Add CGAIN volume control 

Add CGAIN (Coarse gain control) to TWL4030 codec.
The range of the CGAIN is:
0 dB to 12 dB in 6 dB steps.

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 13:49:36 +02:00 committed by Mark Brown
parent c10b82cf08
commit 0d33ea0b0f
1 changed files with 10 additions and 0 deletions
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10
sound/soc/codecs/twl4030.c
View File

@ -196,10 +196,20 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
*/
static DECLARE_TLV_DB_SCALE(master_tlv, -6300, 100, 1);
/*
* CGAIN volume control:
* 0 dB to 12 dB in 6 dB steps
* value 2 and 3 means 12 dB
*/
static DECLARE_TLV_DB_SCALE(master_coarse_tlv, 0, 600, 0);
static const struct snd_kcontrol_new twl4030_snd_controls[] = {
SOC_DOUBLE_R_TLV("Master Playback Volume",
TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA,
0, 0x3f, 0, master_tlv),
SOC_DOUBLE_R_TLV("Master PCM Playback Volume",
TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA,
6, 0x2, 0, master_coarse_tlv),
SOC_DOUBLE_R("Capture Volume",
TWL4030_REG_ATXL1PGA, TWL4030_REG_ATXR1PGA,
0, 0x1f, 0),