linux-kernel - [PATCH] ASoC: wm8960: Add DAC filter characteristics selection

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Message-Id: <1689925948-21001-1-git-send-email-shengjiu.wang@nxp.com>
Date:   Fri, 21 Jul 2023 15:52:28 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, ckeepax@...nsource.cirrus.com,
        kuninori.morimoto.gx@...esas.com, patches@...nsource.cirrus.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: wm8960: Add DAC filter characteristics selection

Support DAC filter characteristics selection: Normal mode
and Sloping stopband. Sloping stopband may have
better frequency response.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/codecs/wm8960.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index 366f5d769d6d..ff1355306b43 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -155,6 +155,7 @@ static const char *wm8960_adc_data_output_sel[] = {
 	"Left Data = Right ADC; Right Data = Left ADC",
 };
 static const char *wm8960_dmonomix[] = {"Stereo", "Mono"};
+static const char *wm8960_dacslope[] = {"Normal", "Sloping"};
 
 static const struct soc_enum wm8960_enum[] = {
 	SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
@@ -165,6 +166,7 @@ static const struct soc_enum wm8960_enum[] = {
 	SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 	SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel),
 	SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix),
+	SOC_ENUM_SINGLE(WM8960_DACCTL2, 1, 2, wm8960_dacslope),
 };
 
 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
@@ -307,6 +309,7 @@ SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 
 SOC_ENUM("ADC Data Output Select", wm8960_enum[6]),
 SOC_ENUM("DAC Mono Mix", wm8960_enum[7]),
+SOC_ENUM("DAC filter characteristics", wm8960_enum[8]),
 };
 
 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
-- 
2.34.1