ASoC: Tegra: WM8903: Support d-mic and headset mic

Onboard d-mic as well as mic jack for headset mic
are available. Both mics can be supported
simultaneously and one of them will be selected as
per application request and availability  of
headset mic.

BUG 834328

Change-Id: Ie4fce8944d6219bfba2f26d6d0092c715142d740
Reviewed-on: http://git-master/r/54974
Tested-by: Sayak Choudhury <sayakc@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 66 insertions, 26 deletions

diff --git a/sound/soc/tegra/tegra_soc_wm8903.c b/sound/soc/tegra/tegra_soc_wm8903.c
index 05e6e71797b6..eff3ed5be537 100644
--- a/sound/soc/tegra/tegra_soc_wm8903.c
+++ b/sound/soc/tegra/tegra_soc_wm8903.c
@@ -26,7 +26,7 @@
 #include "../codecs/wm8903.h"
 
 static struct platform_device *tegra_snd_device;
-
+static struct tegra_audio_data audio_data;
 extern struct snd_soc_dai tegra_i2s_dai[];
 extern struct snd_soc_dai tegra_spdif_dai;
 extern struct snd_soc_dai tegra_generic_codec_dai[];
@@ -175,28 +175,6 @@ static int tegra_hifi_hw_params(struct snd_pcm_substream *substream,
 		CtrlReg |= ADCL_ENA;
 		snd_soc_write(codec, WM8903_POWER_MANAGEMENT_6, CtrlReg);
 
-#else
-
-		/* Enabling Digital mic as default*/
-		/* Set GP1_FN as DMIC_LR */
-		CtrlReg = DMIC_CLK_OUT | GPIO_DIR_OUT;
-		snd_soc_write(codec, WM8903_GPIO_CONTROL_1, CtrlReg);
-
-		/* Set GP2_FN as DMIC_DAT */
-		CtrlReg = DMIC_DAT_DATA_IN | GPIO_DIR_IN;
-		snd_soc_write(codec, WM8903_GPIO_CONTROL_2, CtrlReg);
-
-		/* Enable ADC Digital volumes */
-		VolumeCtrlReg = ADC_DIGITAL_VOL_17_625_DB;
-
-		snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT,
-				VolumeCtrlReg);
-		snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT,
-				VolumeCtrlReg);
-
-		/* Enable DIG_MIC */
-		CtrlReg = WM8903_ADC_DIG_MIC;
-		snd_soc_write(codec, WM8903_CLOCK_RATE_TEST_4, CtrlReg);
 #endif
 	}
 
@@ -399,6 +377,7 @@ static int tegra_dapm_event_int_spk(struct snd_soc_dapm_widget* w,
 static int tegra_dapm_event_int_mic(struct snd_soc_dapm_widget* w,
 				    struct snd_kcontrol* k, int event)
 {
+	int val;
 	if (tegra_wired_jack_conf.en_mic_int != -1)
 		gpio_set_value_cansleep(tegra_wired_jack_conf.en_mic_int,
 			SND_SOC_DAPM_EVENT_ON(event) ? 1 : 0);
@@ -407,12 +386,45 @@ static int tegra_dapm_event_int_mic(struct snd_soc_dapm_widget* w,
 		gpio_set_value_cansleep(tegra_wired_jack_conf.en_mic_ext,
 			SND_SOC_DAPM_EVENT_ON(event) ? 0 : 1);
 
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		/* Enabling Digital mic as default*/
+		/* Set GP1_FN as DMIC_LR */
+		val = DMIC_CLK_OUT | GPIO_DIR_OUT;
+		snd_soc_write(audio_data.codec, WM8903_GPIO_CONTROL_1, val);
+
+		/* Set GP2_FN as DMIC_DAT */
+		val = DMIC_DAT_DATA_IN | GPIO_DIR_IN;
+		snd_soc_write(audio_data.codec, WM8903_GPIO_CONTROL_2, val);
+
+		/* Enable ADC Digital volumes */
+		val = ADC_DIGITAL_VOL_9DB;
+
+		snd_soc_write(audio_data.codec, WM8903_ADC_DIGITAL_VOLUME_LEFT,
+				val);
+		snd_soc_write(audio_data.codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT,
+				val);
+
+		/* Enable DIG_MIC */
+		val = WM8903_ADC_DIG_MIC;
+		snd_soc_write(audio_data.codec, WM8903_CLOCK_RATE_TEST_4, val);
+
+		/* Disable analog inputs */
+		val = 0;
+		snd_soc_write(audio_data.codec, WM8903_POWER_MANAGEMENT_0, val);
+
+		/* Enable ADC */
+		val = snd_soc_read(audio_data.codec, WM8903_POWER_MANAGEMENT_6);
+		val |= ADCL_ENA;
+		snd_soc_write(audio_data.codec,WM8903_POWER_MANAGEMENT_6, val);
+	}
+
 	return 0;
 }
 
 static int tegra_dapm_event_ext_mic(struct snd_soc_dapm_widget* w,
 				    struct snd_kcontrol* k, int event)
 {
+	int val;
 	if (tegra_wired_jack_conf.en_mic_ext != -1)
 		gpio_set_value_cansleep(tegra_wired_jack_conf.en_mic_ext,
 			SND_SOC_DAPM_EVENT_ON(event) ? 1 : 0);
@@ -421,6 +433,34 @@ static int tegra_dapm_event_ext_mic(struct snd_soc_dapm_widget* w,
 		gpio_set_value_cansleep(tegra_wired_jack_conf.en_mic_int,
 			SND_SOC_DAPM_EVENT_ON(event) ? 0 : 1);
 
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		/* Single Ended Mic */
+		val = CM_DISABLED | SINGLE_ENDED_MODE | IN1L_SEL_N | IN2L_SEL_P;
+		/* Mic Setting */
+		snd_soc_write(audio_data.codec, WM8903_ANALOGUE_LEFT_INPUT_1,
+				val);
+		snd_soc_write(audio_data.codec,WM8903_ANALOGUE_RIGHT_INPUT_1,
+				val);
+
+		/* Duplicate left ADC data on both channels */
+		val = snd_soc_read(audio_data.codec, WM8903_AUDIO_INTERFACE_0);
+		val  = SET_REG_VAL(val, 0x1, B06_AIF_ADCR, 0x0);
+		val  = SET_REG_VAL(val, 0x1, B06_AIF_ADCL, 0x0);
+		snd_soc_write(audio_data.codec, WM8903_AUDIO_INTERFACE_0, val);
+		/* Enable analog inputs */
+		val = INL_ENA;
+		snd_soc_write(audio_data.codec, WM8903_POWER_MANAGEMENT_0, val);
+
+		/* Enable ADC */
+		val = snd_soc_read(audio_data.codec, WM8903_POWER_MANAGEMENT_6);
+		val |= ADCL_ENA;
+		snd_soc_write(audio_data.codec, WM8903_POWER_MANAGEMENT_6, val);
+
+		/* Disable DIG_MIC */
+		val = 0;
+		snd_soc_write(audio_data.codec, WM8903_CLOCK_RATE_TEST_4, val);
+	}
+
 	return 0;
 }
 
@@ -428,7 +468,7 @@ static int tegra_dapm_event_ext_mic(struct snd_soc_dapm_widget* w,
 static const struct snd_soc_dapm_widget tegra_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_HP("Headset Out", NULL),
-	SND_SOC_DAPM_MIC("Headset In", NULL),
+	SND_SOC_DAPM_MIC("Headset In", tegra_dapm_event_ext_mic),
 	SND_SOC_DAPM_SPK("Lineout", NULL),
 	SND_SOC_DAPM_SPK("Int Spk", tegra_dapm_event_int_spk),
 	SND_SOC_DAPM_MIC("Ext Mic", tegra_dapm_event_ext_mic),
@@ -484,14 +524,14 @@ static int tegra_codec_init(struct snd_soc_codec *codec)
 			err = -ENODEV;
 			goto wm8903_init_fail;
 		}
-
+#if defined(CONFIG_ARCH_TEGRA_2x_SOC)
 		err = tegra_das_enable_mclk();
 		if (err) {
 			pr_err(" Failed to enable dap mclk \n");
 			err = -ENODEV;
 			goto wm8903_init_fail;
 		}
-
+#endif
 		/* Add tegra specific widgets */
 		snd_soc_dapm_new_controls(codec, tegra_dapm_widgets,
 					ARRAY_SIZE(tegra_dapm_widgets));