[PATCH 10/10] ASoC: msm8916-wcd-analog: add quirk for cajon 2.0

[Richard Acayan <mailingradian@gmail.com>]

The codec version CAJON_2_0 on the Snapdragon 670 requires touching the
HPH test registers. Add the quirk so this driver can also support
SDM670.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 sound/soc/codecs/msm8916-wcd-analog.c | 63 ++++++++++++++++++++++++++-
 1 file changed, 61 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c
index 9ca381812975..6fe111e6d686 100644
--- a/sound/soc/codecs/msm8916-wcd-analog.c
+++ b/sound/soc/codecs/msm8916-wcd-analog.c
@@ -217,9 +217,11 @@
 #define CDC_A_RX_HPH_BIAS_LDO_OCP	(0xf195)
 #define CDC_A_RX_HPH_BIAS_CNP		(0xf196)
 #define CDC_A_RX_HPH_CNP_EN		(0xf197)
+#define CDC_A_RX_HPH_L_TEST		(0xf19A)
 #define CDC_A_RX_HPH_L_PA_DAC_CTL	(0xf19B)
 #define RX_HPA_L_PA_DAC_CTL_DATA_RESET_MASK	BIT(1)
 #define RX_HPA_L_PA_DAC_CTL_DATA_RESET_RESET	BIT(1)
+#define CDC_A_RX_HPH_R_TEST		(0xf19C)
 #define CDC_A_RX_HPH_R_PA_DAC_CTL	(0xf19D)
 #define RX_HPH_R_PA_DAC_CTL_DATA_RESET	BIT(1)
 #define RX_HPH_R_PA_DAC_CTL_DATA_RESET_MASK BIT(1)
@@ -696,6 +698,59 @@ static int pm8916_wcd_analog_enable_ear_pa(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+static int pm8916_wcd_analog_enable_hphl_pa(struct snd_soc_dapm_widget *w,
+					    struct snd_kcontrol *kcontrol,
+					    int event)
+{
+	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+	struct pm8916_wcd_analog_priv *priv = dev_get_drvdata(component->dev);
+
+	/* This quirk is not required for revisions prior to CAJON_2_0 */
+	if (priv->codec_version < 4)
+		return 0;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		usleep_range(7000, 7100);
+		snd_soc_component_update_bits(component, CDC_A_RX_HPH_L_TEST,
+				0x04, 0x04);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		/* wait 20 ms after the digital codec has powered down */
+		msleep(20);
+		snd_soc_component_update_bits(component, CDC_A_RX_HPH_L_TEST,
+				0x04, 0x00);
+		break;
+	}
+	return 0;
+}
+
+static int pm8916_wcd_analog_enable_hphr_pa(struct snd_soc_dapm_widget *w,
+					    struct snd_kcontrol *kcontrol,
+					    int event)
+{
+	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+	struct pm8916_wcd_analog_priv *priv = dev_get_drvdata(component->dev);
+
+	/* This quirk is not required for revisions prior to CAJON_2_0 */
+	if (priv->codec_version < 4)
+		return 0;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		usleep_range(7000, 7100);
+		snd_soc_component_update_bits(component, CDC_A_RX_HPH_R_TEST,
+				0x04, 0x04);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		msleep(20);
+		snd_soc_component_update_bits(component, CDC_A_RX_HPH_R_TEST,
+				0x04, 0x00);
+		break;
+	}
+	return 0;
+}
+
 static const struct reg_default wcd_reg_defaults_2_0[] = {
 	{CDC_A_RX_COM_OCP_CTL, 0xD1},
 	{CDC_A_RX_COM_OCP_COUNT, 0xFF},
@@ -883,11 +938,15 @@ static const struct snd_soc_dapm_widget pm8916_wcd_analog_dapm_widgets[] = {
 	SND_SOC_DAPM_MUX("EAR_S", SND_SOC_NOPM, 0, 0, &ear_mux),
 	SND_SOC_DAPM_SUPPLY("EAR CP", CDC_A_NCP_EN, 4, 0, NULL, 0),
 
-	SND_SOC_DAPM_PGA("HPHL PA", CDC_A_RX_HPH_CNP_EN, 5, 0, NULL, 0),
+	SND_SOC_DAPM_PGA_E("HPHL PA", CDC_A_RX_HPH_CNP_EN, 5, 0, NULL, 0,
+			   pm8916_wcd_analog_enable_hphl_pa,
+			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_MUX("HPHL", SND_SOC_NOPM, 0, 0, &hphl_mux),
 	SND_SOC_DAPM_MIXER("HPHL DAC", CDC_A_RX_HPH_L_PA_DAC_CTL, 3, 0, NULL,
 			   0),
-	SND_SOC_DAPM_PGA("HPHR PA", CDC_A_RX_HPH_CNP_EN, 4, 0, NULL, 0),
+	SND_SOC_DAPM_PGA_E("HPHR PA", CDC_A_RX_HPH_CNP_EN, 4, 0, NULL, 0,
+			   pm8916_wcd_analog_enable_hphr_pa,
+			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_MUX("HPHR", SND_SOC_NOPM, 0, 0, &hphr_mux),
 	SND_SOC_DAPM_MIXER("HPHR DAC", CDC_A_RX_HPH_R_PA_DAC_CTL, 3, 0, NULL,
 			   0),
-- 
2.53.0