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[RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls.

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  [RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls. Srinivas Kandagatla <srinivas.kandagatla@linaro.org> - 2016-02-16 18:40 +0100
    Re: [RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls. Mark Brown <broonie@kernel.org> - 2016-02-16 21:30 +0100
      Re: [RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls. Srinivas Kandagatla <srinivas.kandagatla@linaro.org> - 2016-02-17 12:00 +0100
        Re: [RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls. Mark Brown <broonie@kernel.org> - 2016-02-17 12:20 +0100

#1335663 — [RFC v1 7/9] ASoC: msm8x16: Add sound mixer controls.

This patch adds basic mixer controls found in the codec.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/codecs/msm8x16-wcd.c | 99 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)

diff --git a/sound/soc/codecs/msm8x16-wcd.c b/sound/soc/codecs/msm8x16-wcd.c
index 4bc8274..4bf3b81 100644
--- a/sound/soc/codecs/msm8x16-wcd.c
+++ b/sound/soc/codecs/msm8x16-wcd.c
@@ -13,6 +13,7 @@
 #include <sound/soc.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
+#include <sound/tlv.h>
 
 #include "msm8x16-wcd-registers.h"
 #include "msm8x16-wcd.h"
@@ -49,6 +50,29 @@ struct msm8x16_wcd_chip {
 	bool micbias2_cap_mode;
 };
 
+static const char * const msm8x16_wcd_spk_boost_ctrl_text[] = {
+		"DISABLE", "ENABLE"};
+
+/*cut of frequency for high pass filter*/
+static const char * const cf_text[] = {
+	"MIN_3DB_4Hz", "MIN_3DB_75Hz", "MIN_3DB_150Hz"
+};
+
+static const struct soc_enum msm8x16_wcd_spk_boost_ctl_enum[] = {
+		SOC_ENUM_SINGLE_EXT(2, msm8x16_wcd_spk_boost_ctrl_text),
+};
+static const struct soc_enum cf_rxmix1_enum =
+	SOC_ENUM_SINGLE(MSM8X16_WCD_A_CDC_RX1_B4_CTL, 0, 3, cf_text);
+
+static const struct soc_enum cf_rxmix2_enum =
+	SOC_ENUM_SINGLE(MSM8X16_WCD_A_CDC_RX2_B4_CTL, 0, 3, cf_text);
+
+static const struct soc_enum cf_rxmix3_enum =
+	SOC_ENUM_SINGLE(MSM8X16_WCD_A_CDC_RX3_B4_CTL, 0, 3, cf_text);
+
+static const DECLARE_TLV_DB_SCALE(digital_gain, 0, 1, 0);
+static const DECLARE_TLV_DB_SCALE(analog_gain, 0, 25, 1);
+
 static int msm8x16_wcd_volatile(struct snd_soc_codec *codec, unsigned int reg)
 {
 	return msm8x16_wcd_reg_readonly[reg];
@@ -164,6 +188,79 @@ static void msm8x16_wcd_configure_cap(struct snd_soc_codec *codec,
 	}
 }
 
+static int msm8x16_wcd_spk_boost_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+	struct msm8x16_wcd_chip *msm8x16_wcd = dev_get_drvdata(codec->dev);
+
+	if (msm8x16_wcd->spk_boost_set == false) {
+		ucontrol->value.integer.value[0] = 0;
+	} else if (msm8x16_wcd->spk_boost_set == true) {
+		ucontrol->value.integer.value[0] = 1;
+	} else  {
+		dev_err(codec->dev, "%s: ERROR: Unsupported Speaker Boost = %d\n",
+			__func__, msm8x16_wcd->spk_boost_set);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int msm8x16_wcd_spk_boost_set(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+	struct msm8x16_wcd_chip *msm8x16_wcd = snd_soc_codec_get_drvdata(codec);
+
+	switch (ucontrol->value.integer.value[0]) {
+	case 0:
+		msm8x16_wcd->spk_boost_set = false;
+		break;
+	case 1:
+		msm8x16_wcd->spk_boost_set = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct snd_kcontrol_new msm8x16_wcd_snd_controls[] = {
+
+	SOC_ENUM_EXT("Speaker Boost", msm8x16_wcd_spk_boost_ctl_enum[0],
+		msm8x16_wcd_spk_boost_get, msm8x16_wcd_spk_boost_set),
+
+	SOC_SINGLE_TLV("ADC1 Volume", MSM8X16_WCD_A_ANALOG_TX_1_EN, 3,
+					8, 0, analog_gain),
+	SOC_SINGLE_TLV("ADC2 Volume", MSM8X16_WCD_A_ANALOG_TX_2_EN, 3,
+					8, 0, analog_gain),
+	SOC_SINGLE_TLV("ADC3 Volume", MSM8X16_WCD_A_ANALOG_TX_3_EN, 3,
+					8, 0, analog_gain),
+
+	SOC_SINGLE_SX_TLV("RX1 Digital Volume",
+			  MSM8X16_WCD_A_CDC_RX1_VOL_CTL_B2_CTL,
+			0,  -84, 40, digital_gain),
+	SOC_SINGLE_SX_TLV("RX2 Digital Volume",
+			  MSM8X16_WCD_A_CDC_RX2_VOL_CTL_B2_CTL,
+			0,  -84, 40, digital_gain),
+	SOC_SINGLE_SX_TLV("RX3 Digital Volume",
+			  MSM8X16_WCD_A_CDC_RX3_VOL_CTL_B2_CTL,
+			0,  -84, 40, digital_gain),
+
+	SOC_SINGLE("RX1 HPF Switch",
+		MSM8X16_WCD_A_CDC_RX1_B5_CTL, 2, 1, 0),
+	SOC_SINGLE("RX2 HPF Switch",
+		MSM8X16_WCD_A_CDC_RX2_B5_CTL, 2, 1, 0),
+	SOC_SINGLE("RX3 HPF Switch",
+		MSM8X16_WCD_A_CDC_RX3_B5_CTL, 2, 1, 0),
+
+	SOC_ENUM("RX1 HPF cut off", cf_rxmix1_enum),
+	SOC_ENUM("RX2 HPF cut off", cf_rxmix2_enum),
+	SOC_ENUM("RX3 HPF cut off", cf_rxmix3_enum),
+};
+
+
 static int msm8x16_wcd_codec_parse_dt(struct platform_device *pdev,
 				      struct msm8x16_wcd_chip *chip)
 {
@@ -551,6 +648,8 @@ static struct snd_soc_codec_driver msm8x16_wcd_codec = {
 	.reg_cache_size = MSM8X16_WCD_NUM_REGISTERS,
 	.reg_cache_default = msm8x16_wcd_reset_reg_defaults,
 	.reg_word_size = 1,
+	.controls = msm8x16_wcd_snd_controls,
+	.num_controls = ARRAY_SIZE(msm8x16_wcd_snd_controls),
 };
 
 static int msm8x16_wcd_probe(struct platform_device *pdev)
-- 
1.9.1

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#1335799

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On Tue, Feb 16, 2016 at 05:33:28PM +0000, Srinivas Kandagatla wrote:

> +static const char * const msm8x16_wcd_spk_boost_ctrl_text[] = {
> +		"DISABLE", "ENABLE"};

On/off switches should be presented to usersrpace as on/off switches
with "Switch" at the end of their name not as SHOUTING enums.  The
indentation and brace placement are also weird here.

I'm going to stop reviewing at this point.  It really feels like this
code could benefit from taking a look at some modern CODEC drivers and
following the ways they do things, there appear to be a lot of these
issues throughout the series.

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#1336249

Thanks for your comments on the patch series.

On 16/02/16 20:21, Mark Brown wrote:
> On Tue, Feb 16, 2016 at 05:33:28PM +0000, Srinivas Kandagatla wrote:
>
>> +static const char * const msm8x16_wcd_spk_boost_ctrl_text[] = {
>> +		"DISABLE", "ENABLE"};
>
> On/off switches should be presented to usersrpace as on/off switches
> with "Switch" at the end of their name not as SHOUTING enums.  The
> indentation and brace placement are also weird here.
>
> I'm going to stop reviewing at this point.  It really feels like this
> code could benefit from taking a look at some modern CODEC drivers and
> following the ways they do things, there appear to be a lot of these
> issues throughout the series.

I totally agree with you on this and all the comments in the patchset, 
TBH this driver was forward ported from msm-3.10 Andriod kernel, My Idea 
was to retain most of code bits from that driver but it looks its a very 
bad Idea to start with.

I will relook into the modern codec drivers and rewrite the driver to be 
inline with them.

Thanks,
srini

>

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#1336261

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On Wed, Feb 17, 2016 at 10:58:02AM +0000, Srinivas Kandagatla wrote:

> I will relook into the modern codec drivers and rewrite the driver to be
> inline with them.

It probably doesn't need a complete rewrite but it does need a review
and update to meet modern standards.

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