linux-kernel - [PATCH v4] ASoC: tlv320aic3x: Add support for high power analog output

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Message-Id: <20190511151149.28823-1-sravanhome@gmail.com>
Date:   Sat, 11 May 2019 17:11:49 +0200
From:   Saravanan Sekar <sravanhome@...il.com>
To:     sravanhome@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4] ASoC: tlv320aic3x: Add support for high power analog output

Add support to output level control for the analog high power output
drivers HPOUT and HPCOM.

Signed-off-by: Saravanan Sekar <sravanhome@...il.com>
---

Notes:
    Notes:
        Changes in V4:
        -Added separate mono playback volume control
        -grouped volume controls with corresponding switch
    
        Changes in V3:
        -Fixed compilation error
    
        Changes in V2:
        - Removed power control as it is handled by DAPM
        - Added level control for left channel

 sound/soc/codecs/tlv320aic3x.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 516d17cb2182..599e4ed3850b 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -324,6 +324,9 @@ static DECLARE_TLV_DB_SCALE(adc_tlv, 0, 50, 0);
  */
 static DECLARE_TLV_DB_SCALE(output_stage_tlv, -5900, 50, 1);
 
+/* Output volumes. From 0 to 9 dB in 1 dB steps */
+static const DECLARE_TLV_DB_SCALE(out_tlv, 0, 100, 0);
+
 static const struct snd_kcontrol_new aic3x_snd_controls[] = {
 	/* Output */
 	SOC_DOUBLE_R_TLV("PCM Playback Volume",
@@ -386,11 +389,17 @@ static const struct snd_kcontrol_new aic3x_snd_controls[] = {
 			 DACL1_2_HPLCOM_VOL, DACR1_2_HPRCOM_VOL,
 			 0, 118, 1, output_stage_tlv),
 
-	/* Output pin mute controls */
+	/* Output pin controls */
+	SOC_DOUBLE_R_TLV("Line Playback Volume", LLOPM_CTRL, RLOPM_CTRL, 4,
+			 9, 0, out_tlv),
 	SOC_DOUBLE_R("Line Playback Switch", LLOPM_CTRL, RLOPM_CTRL, 3,
 		     0x01, 0),
+	SOC_DOUBLE_R_TLV("HP Playback Volume", HPLOUT_CTRL, HPROUT_CTRL, 4,
+			 9, 0, out_tlv),
 	SOC_DOUBLE_R("HP Playback Switch", HPLOUT_CTRL, HPROUT_CTRL, 3,
 		     0x01, 0),
+	SOC_DOUBLE_R_TLV("HPCOM Playback Volume", HPLCOM_CTRL, HPRCOM_CTRL,
+			 4, 9, 0, out_tlv),
 	SOC_DOUBLE_R("HPCOM Playback Switch", HPLCOM_CTRL, HPRCOM_CTRL, 3,
 		     0x01, 0),
 
@@ -472,6 +481,9 @@ static const struct snd_kcontrol_new aic3x_mono_controls[] = {
 			 0, 118, 1, output_stage_tlv),
 
 	SOC_SINGLE("Mono Playback Switch", MONOLOPM_CTRL, 3, 0x01, 0),
+	SOC_SINGLE_TLV("Mono Playback Volume", MONOLOPM_CTRL, 4, 9, 0,
+			out_tlv),
+
 };
 
 /*
-- 
2.17.1