ASoC: codecs: jz4725b: Various improvements and fixes

Merge series from Siarhei Volkau <lis8215@gmail.com>:

The patchset fixes:
 - Line In path stays powered off during capturing or
   bypass to mixer.
 - incorrectly represented dB values in alsamixer, et al.
 - incorrect represented Capture input selector in alsamixer
   in Playback tab.
 - wrong control selected as Capture Master

The patchset improves:
 - Exposes output stage (post mixer) gain control and makes it new
   Master playback gain, DAC gain was the previous master.
   However, no Master mute now.
 - Exposes all mixer inputs (both Mics, LineIn and DAC) with their
   gain controls.
 - Exposes microphones widgets: single/differential input, boost.

Known issues:
 - Bypass path enablement isn't applied immediately, for make
   things going bit clock needs to be triggered for a bit,
   e.g. by aplay dummy.wav
   It might be a hardware bug, since the bit clock isn't
   declared as required for codec operation.

Tested on:
 - Ritmix RZX-27 (jz4725b).
 - Ritmix RZX-50 (jz4755).

1 files changed, 92 insertions, 17 deletions

diff --git a/sound/soc/codecs/jz4725b.c b/sound/soc/codecs/jz4725b.c
index 5201a8f6d7b6..685ba1d3a644 100644
--- a/sound/soc/codecs/jz4725b.c
+++ b/sound/soc/codecs/jz4725b.c
@@ -136,28 +136,89 @@ enum {
 #define REG_CGR3_GO1L_OFFSET		0
 #define REG_CGR3_GO1L_MASK		(0x1f << REG_CGR3_GO1L_OFFSET)
 
+#define REG_CGR4_GO2R_OFFSET		0
+#define REG_CGR4_GO2R_MASK		(0x1f << REG_CGR4_GO2R_OFFSET)
+
+#define REG_CGR5_GO2L_OFFSET		0
+#define REG_CGR5_GO2L_MASK		(0x1f << REG_CGR5_GO2L_OFFSET)
+
+#define REG_CGR6_GO3R_OFFSET		0
+#define REG_CGR6_GO3R_MASK		(0x1f << REG_CGR6_GO3R_OFFSET)
+
+#define REG_CGR7_GO3L_OFFSET		0
+#define REG_CGR7_GO3L_MASK		(0x1f << REG_CGR7_GO3L_OFFSET)
+
+#define REG_CGR8_GOR_OFFSET		0
+#define REG_CGR8_GOR_MASK		(0x1f << REG_CGR8_GOR_OFFSET)
+
+#define REG_CGR9_GOL_OFFSET		0
+#define REG_CGR9_GOL_MASK		(0x1f << REG_CGR9_GOL_OFFSET)
+
+#define REG_CGR10_GIL_OFFSET		0
+#define REG_CGR10_GIR_OFFSET		4
+
 struct jz_icdc {
 	struct regmap *regmap;
 	void __iomem *base;
 	struct clk *clk;
 };
 
-static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_dac_tlv, -2250, 0);
-static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_line_tlv, -1500, 600);
+static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(jz4725b_adc_tlv,     0, 150, 0);
+static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(jz4725b_dac_tlv, -2250, 150, 0);
+static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(jz4725b_mix_tlv,
+	 0, 11, TLV_DB_SCALE_ITEM(-2250,   0, 0),
+	12, 31, TLV_DB_SCALE_ITEM(-2250, 150, 0),
+);
+
+static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(jz4725b_out_tlv,
+	 0, 11, TLV_DB_SCALE_ITEM(-3350, 200, 0),
+	12, 23, TLV_DB_SCALE_ITEM(-1050, 100, 0),
+	24, 31, TLV_DB_SCALE_ITEM(  100,  50, 0),
+);
+static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(jz4725b_mic_boost_tlv, 0, 2000, 0);
+
+static const char * const jz4725b_mic_mode_texts[] = {
+	"Single Ended", "Differential",
+};
+
+static const struct soc_enum jz4725b_mic_mode_enum =
+	SOC_ENUM_SINGLE(JZ4725B_CODEC_REG_CR3, REG_CR3_MICDIFF_OFFSET,
+			2, jz4725b_mic_mode_texts);
 
 static const struct snd_kcontrol_new jz4725b_codec_controls[] = {
-	SOC_DOUBLE_TLV("Master Playback Volume",
+	SOC_DOUBLE_TLV("DAC Playback Volume",
 		       JZ4725B_CODEC_REG_CGR1,
 		       REG_CGR1_GODL_OFFSET,
 		       REG_CGR1_GODR_OFFSET,
 		       0xf, 1, jz4725b_dac_tlv),
-	SOC_DOUBLE_R_TLV("Master Capture Volume",
+	SOC_DOUBLE_TLV("Master Capture Volume",
+		       JZ4725B_CODEC_REG_CGR10,
+		       REG_CGR10_GIL_OFFSET,
+		       REG_CGR10_GIR_OFFSET,
+		       0xf, 0, jz4725b_adc_tlv),
+	SOC_DOUBLE_R_TLV("Mixer Line In Bypass Playback Volume",
 			 JZ4725B_CODEC_REG_CGR3,
 			 JZ4725B_CODEC_REG_CGR2,
 			 REG_CGR2_GO1R_OFFSET,
-			 0x1f, 1, jz4725b_line_tlv),
-
-	SOC_SINGLE("Master Playback Switch", JZ4725B_CODEC_REG_CR1,
+			 0x1f, 1, jz4725b_mix_tlv),
+	SOC_DOUBLE_R_TLV("Mixer Mic 1 Bypass Playback Volume",
+			 JZ4725B_CODEC_REG_CGR5,
+			 JZ4725B_CODEC_REG_CGR4,
+			 REG_CGR4_GO2R_OFFSET,
+			 0x1f, 1, jz4725b_mix_tlv),
+	SOC_DOUBLE_R_TLV("Mixer Mic 2 Bypass Playback Volume",
+			 JZ4725B_CODEC_REG_CGR7,
+			 JZ4725B_CODEC_REG_CGR6,
+			 REG_CGR6_GO3R_OFFSET,
+			 0x1f, 1, jz4725b_mix_tlv),
+
+	SOC_DOUBLE_R_TLV("Master Playback Volume",
+			 JZ4725B_CODEC_REG_CGR9,
+			 JZ4725B_CODEC_REG_CGR8,
+			 REG_CGR8_GOR_OFFSET,
+			 0x1f, 1, jz4725b_out_tlv),
+
+	SOC_SINGLE("DAC Playback Switch", JZ4725B_CODEC_REG_CR1,
 		   REG_CR1_DAC_MUTE_OFFSET, 1, 1),
 
 	SOC_SINGLE("Deemphasize Filter Playback Switch",
@@ -167,6 +228,13 @@ static const struct snd_kcontrol_new jz4725b_codec_controls[] = {
 	SOC_SINGLE("High-Pass Filter Capture Switch",
 		   JZ4725B_CODEC_REG_CR2,
 		   REG_CR2_ADC_HPF_OFFSET, 1, 0),
+
+	SOC_ENUM("Mic Mode Capture Switch", jz4725b_mic_mode_enum),
+
+	SOC_SINGLE_TLV("Mic1 Boost Capture Volume",
+		       JZ4725B_CODEC_REG_PMR2,
+		       REG_PMR2_GIM_OFFSET,
+		       1, 0, jz4725b_mic_boost_tlv),
 };
 
 static const char * const jz4725b_codec_adc_src_texts[] = {
@@ -180,11 +248,15 @@ static SOC_VALUE_ENUM_SINGLE_DECL(jz4725b_codec_adc_src_enum,
 				  jz4725b_codec_adc_src_texts,
 				  jz4725b_codec_adc_src_values);
 static const struct snd_kcontrol_new jz4725b_codec_adc_src_ctrl =
-			SOC_DAPM_ENUM("Route", jz4725b_codec_adc_src_enum);
+	SOC_DAPM_ENUM("ADC Source Capture Route", jz4725b_codec_adc_src_enum);
 
 static const struct snd_kcontrol_new jz4725b_codec_mixer_controls[] = {
-	SOC_DAPM_SINGLE("Line In Bypass", JZ4725B_CODEC_REG_CR1,
+	SOC_DAPM_SINGLE("Line In Bypass Playback Switch", JZ4725B_CODEC_REG_CR1,
 			REG_CR1_BYPASS_OFFSET, 1, 0),
+	SOC_DAPM_SINGLE("Mic 1 Bypass Playback Switch", JZ4725B_CODEC_REG_CR3,
+			REG_CR3_SIDETONE1_OFFSET, 1, 0),
+	SOC_DAPM_SINGLE("Mic 2 Bypass Playback Switch", JZ4725B_CODEC_REG_CR3,
+			REG_CR3_SIDETONE2_OFFSET, 1, 0),
 };
 
 static int jz4725b_out_stage_enable(struct snd_soc_dapm_widget *w,
@@ -225,7 +297,7 @@ static const struct snd_soc_dapm_widget jz4725b_codec_dapm_widgets[] = {
 	SND_SOC_DAPM_ADC("ADC", "Capture",
 			 JZ4725B_CODEC_REG_PMR1, REG_PMR1_SB_ADC_OFFSET, 1),
 
-	SND_SOC_DAPM_MUX("ADC Source", SND_SOC_NOPM, 0, 0,
+	SND_SOC_DAPM_MUX("ADC Source Capture Route", SND_SOC_NOPM, 0, 0,
 			 &jz4725b_codec_adc_src_ctrl),
 
 	/* Mixer */
@@ -236,7 +308,8 @@ static const struct snd_soc_dapm_widget jz4725b_codec_dapm_widgets[] = {
 	SND_SOC_DAPM_MIXER("DAC to Mixer", JZ4725B_CODEC_REG_CR1,
 			   REG_CR1_DACSEL_OFFSET, 0, NULL, 0),
 
-	SND_SOC_DAPM_MIXER("Line In", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_MIXER("Line In", JZ4725B_CODEC_REG_PMR1,
+			   REG_PMR1_SB_LIN_OFFSET, 1, NULL, 0),
 	SND_SOC_DAPM_MIXER("HP Out", JZ4725B_CODEC_REG_CR1,
 			   REG_CR1_HP_DIS_OFFSET, 1, NULL, 0),
 
@@ -278,16 +351,18 @@ static const struct snd_soc_dapm_route jz4725b_codec_dapm_routes[] = {
 	{"Line In", NULL, "LLINEIN"},
 	{"Line In", NULL, "RLINEIN"},
 
-	{"Mixer", "Line In Bypass", "Line In"},
+	{"Mixer", "Mic 1 Bypass Playback Switch", "Mic 1"},
+	{"Mixer", "Mic 2 Bypass Playback Switch", "Mic 2"},
+	{"Mixer", "Line In Bypass Playback Switch", "Line In"},
 	{"DAC to Mixer", NULL, "DAC"},
 	{"Mixer", NULL, "DAC to Mixer"},
 
 	{"Mixer to ADC", NULL, "Mixer"},
-	{"ADC Source", "Mixer", "Mixer to ADC"},
-	{"ADC Source", "Line In", "Line In"},
-	{"ADC Source", "Mic 1", "Mic 1"},
-	{"ADC Source", "Mic 2", "Mic 2"},
-	{"ADC", NULL, "ADC Source"},
+	{"ADC Source Capture Route", "Mixer", "Mixer to ADC"},
+	{"ADC Sourc Capture Routee", "Line In", "Line In"},
+	{"ADC Source Capture Route", "Mic 1", "Mic 1"},
+	{"ADC Source Capture Route", "Mic 2", "Mic 2"},
+	{"ADC", NULL, "ADC Source Capture Route"},
 
 	{"Out Stage", NULL, "Mixer"},
 	{"HP Out", NULL, "Out Stage"},