ASoC: TWL4030: Fix gain control for earpiece amplifier

The gain control for earpiece amplifier uses 0dB ~ 12dB according to the TRM, but the present code is implemented to -6dB ~ 6dB. Signed-off-by: Joonyoung Shim <[email protected]> Acked-by: Peter Ujfalusi <[email protected]> Signed-off-by: Mark Brown <[email protected]>
yshchan · Apr 28, 2009 · 18cc8d8 · 18cc8d8
1 parent 0c95de7
commit 18cc8d8
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
@@ -835,6 +835,12 @@ static DECLARE_TLV_DB_SCALE(analog_tlv, -2400, 200, 0);
  */
 static DECLARE_TLV_DB_SCALE(output_tvl, -1200, 600, 1);
 
+/*
+ * Gain control for earpiece amplifier
+ * 0 dB to 12 dB in 6 dB steps (mute instead of -6)
+ */
+static DECLARE_TLV_DB_SCALE(output_ear_tvl, -600, 600, 1);
+
 /*
  * Capture gain after the ADCs
  * from 0 dB to 31 dB in 1 dB steps
@@ -900,7 +906,7 @@ static const struct snd_kcontrol_new twl4030_snd_controls[] = {
 		4, 3, 0, output_tvl),
 
 	SOC_SINGLE_TLV_TWL4030("Earpiece Playback Volume",
-		TWL4030_REG_EAR_CTL, 4, 3, 0, output_tvl),
+		TWL4030_REG_EAR_CTL, 4, 3, 0, output_ear_tvl),
 
 	/* Common capture gain controls */
 	SOC_DOUBLE_R_TLV("TX1 Digital Capture Volume",