[PATCH] ASoC: nau8821: Add DMIC selections.

[Seven Lee]

Add the following two control options:
1. DMIC pin slew rate selection.
2. DMIC clock speed selection.

Signed-off-by: Seven Lee <wtli at nuvoton.com>
---
 sound/soc/codecs/nau8821.c | 79 ++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/nau8821.h |  6 ++-
 2 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
index 2de818377484..52cdbf263e42 100644
--- a/sound/soc/codecs/nau8821.c
+++ b/sound/soc/codecs/nau8821.c
@@ -305,6 +305,66 @@ static int nau8821_biq_coeff_put(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
+static int nau8821_slew_rate_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+	unsigned int value;
+
+	regmap_read(nau8821->regmap, NAU8821_R13_DMIC_CTRL, &value);
+	nau8821->def_mclk_src = (value & NAU8821_DMIC_SLEW_MASK)
+		>> NAU8821_DMIC_SLEW_SFT;
+	ucontrol->value.bytes.data[0] = nau8821->def_mclk_src;
+
+	return 0;
+}
+
+static int nau8821_slew_rate_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+	nau8821->def_mclk_src = ucontrol->value.integer.value[0];
+
+	regmap_update_bits(component->regmap, NAU8821_R13_DMIC_CTRL,
+		NAU8821_DMIC_SLEW_MASK,
+		nau8821->def_mclk_src << NAU8821_DMIC_SLEW_SFT);
+
+	return 0;
+}
+
+static int nau8821_dmic_clock_speed_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+	unsigned int value;
+
+	regmap_read(nau8821->regmap, NAU8821_R13_DMIC_CTRL, &value);
+	nau8821->def_dmic_clock = (value & NAU8821_DMIC_SRC_MASK)
+		>> NAU8821_DMIC_SRC_SFT;
+	ucontrol->value.bytes.data[0] = nau8821->def_dmic_clock;
+
+	return 0;
+}
+
+static int nau8821_dmic_clock_speed_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+	nau8821->def_dmic_clock = ucontrol->value.integer.value[0];
+
+	regmap_update_bits(component->regmap, NAU8821_R13_DMIC_CTRL,
+		NAU8821_DMIC_SRC_MASK,
+		nau8821->def_dmic_clock << NAU8821_DMIC_SRC_SFT);
+
+	return 0;
+}
+
 static const char * const nau8821_adc_decimation[] = {
 	"32", "64", "128", "256" };
 
@@ -319,6 +379,20 @@ static const struct soc_enum nau8821_dac_oversampl_enum =
 	SOC_ENUM_SINGLE(NAU8821_R2C_DAC_CTRL1, NAU8821_DAC_OVERSAMPLE_SFT,
 		ARRAY_SIZE(nau8821_dac_oversampl), nau8821_dac_oversampl);
 
+static const char *const dmic_slew_text[] = {"0", "1", "2", "3", "4", "5",
+	"6", "7"};
+
+static const struct soc_enum nau8821_slew_rate_enum =
+		SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(dmic_slew_text),
+		dmic_slew_text);
+
+static const char *const dmic_clock_speed_text[] = {"3.072", "1.536", "0.768",
+	"0.384"};
+
+static const struct soc_enum nau8821_dmic_clock_speed_enum =
+		SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(dmic_clock_speed_text),
+		dmic_clock_speed_text);
+
 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -6600, 2400);
 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
 static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -900, 0);
@@ -350,6 +424,11 @@ static const struct snd_kcontrol_new nau8821_controls[] = {
 		nau8821_biq_coeff_get, nau8821_biq_coeff_put),
 	SOC_SINGLE("ADC Phase Switch", NAU8821_R1B_TDM_CTRL,
 		NAU8821_ADCPHS_SFT, 1, 0),
+	SOC_ENUM_EXT("Slew Rate Selection", nau8821_slew_rate_enum,
+			nau8821_slew_rate_get, nau8821_slew_rate_put),
+	SOC_ENUM_EXT("DMIC Clock Speed Selection",
+		nau8821_dmic_clock_speed_enum, nau8821_dmic_clock_speed_get,
+		nau8821_dmic_clock_speed_put),
 };
 
 static const struct snd_kcontrol_new nau8821_dmic_mode_switch =
diff --git a/sound/soc/codecs/nau8821.h b/sound/soc/codecs/nau8821.h
index a92edfeb9d3a..0ca099fa98bb 100644
--- a/sound/soc/codecs/nau8821.h
+++ b/sound/soc/codecs/nau8821.h
@@ -228,7 +228,7 @@
 #define NAU8821_IRQ_INSERT_DIS		0x1
 
 /* DMIC_CTRL (0x13) */
-#define NAU8821_DMIC_DS_SFT	7
+#define NAU8821_DMIC_DS_SFT	11
 #define NAU8821_DMIC_DS_MASK	(0x1 << NAU8821_DMIC_DS_SFT)
 #define NAU8821_DMIC_DS_HIGH	(0x1 << NAU8821_DMIC_DS_SFT)
 #define NAU8821_DMIC_DS_LOW	(0x0 << NAU8821_DMIC_DS_SFT)
@@ -236,6 +236,8 @@
 #define NAU8821_DMIC_SRC_MASK	(0x3 << NAU8821_DMIC_SRC_SFT)
 #define NAU8821_CLK_DMIC_SRC	(0x2 << NAU8821_DMIC_SRC_SFT)
 #define NAU8821_DMIC_EN_SFT	0
+#define NAU8821_DMIC_SLEW_SFT	8
+#define NAU8821_DMIC_SLEW_MASK	(0x7 << NAU8821_DMIC_SLEW_SFT)
 
 /* GPIO12_CTRL (0x1a) */
 #define NAU8821_JKDET_PULL_UP	(0x1 << 11) /* 0 - pull down, 1 - pull up */
@@ -525,6 +527,8 @@ struct nau8821 {
 	int jack_eject_debounce;
 	int fs;
 	int dmic_clk_threshold;
+	int def_mclk_src;
+	int def_dmic_clock;
 };
 
 int nau8821_enable_jack_detect(struct snd_soc_component *component,
-- 
2.25.1