[PATCH 5.15 054/279] ASoC: rt5682: fix a little pop while playback

From: Greg Kroah-Hartman
Date: Wed Nov 24 2021 - 08:51:28 EST

From: Derek Fang <derek.fang@xxxxxxxxxxx>

[ Upstream commit 4b19e4a77cc6baa0f840e8bae62ab974667f6207 ]

A little pop can be heard obviously from HP while playing a silent.
This patch fixes it by using two functions:
1. Enable HP 1bit output mode.
2. Change the charge pump switch size during playback on and off.

Signed-off-by: Derek Fang <derek.fang@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211014094054.811-1-derek.fang@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/codecs/rt5682.c | 56 +++++++++++++++++++++++++++++++++------
sound/soc/codecs/rt5682.h | 20 ++++++++++++++
2 files changed, 68 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index 4a64cab99c55b..d550c0705c28b 100644
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -46,6 +46,8 @@ static const struct reg_sequence patch_list[] = {
{RT5682_SAR_IL_CMD_1, 0x22b7},
{RT5682_SAR_IL_CMD_3, 0x0365},
{RT5682_SAR_IL_CMD_6, 0x0110},
+ {RT5682_CHARGE_PUMP_1, 0x0210},
+ {RT5682_HP_LOGIC_CTRL_2, 0x0007},
};

void rt5682_apply_patch_list(struct rt5682_priv *rt5682, struct device *dev)
@@ -1515,21 +1517,29 @@ static int rt5682_hp_event(struct snd_soc_dapm_widget *w,

switch (event) {
case SND_SOC_DAPM_PRE_PMU:
- snd_soc_component_write(component,
- RT5682_HP_LOGIC_CTRL_2, 0x0012);
- snd_soc_component_write(component,
- RT5682_HP_CTRL_2, 0x6000);
+ snd_soc_component_update_bits(component, RT5682_HP_CTRL_2,
+ RT5682_HP_C2_DAC_AMP_MUTE, 0);
+ snd_soc_component_update_bits(component, RT5682_HP_LOGIC_CTRL_2,
+ RT5682_HP_LC2_SIG_SOUR2_MASK, RT5682_HP_LC2_SIG_SOUR2_REG);
snd_soc_component_update_bits(component,
RT5682_DEPOP_1, 0x60, 0x60);
snd_soc_component_update_bits(component,
RT5682_DAC_ADC_DIG_VOL1, 0x00c0, 0x0080);
+ snd_soc_component_update_bits(component, RT5682_HP_CTRL_2,
+ RT5682_HP_C2_DAC_L_EN | RT5682_HP_C2_DAC_R_EN,
+ RT5682_HP_C2_DAC_L_EN | RT5682_HP_C2_DAC_R_EN);
+ usleep_range(5000, 10000);
+ snd_soc_component_update_bits(component, RT5682_CHARGE_PUMP_1,
+ RT5682_CP_SW_SIZE_MASK, RT5682_CP_SW_SIZE_L);
break;

case SND_SOC_DAPM_POST_PMD:
+ snd_soc_component_update_bits(component, RT5682_HP_CTRL_2,
+ RT5682_HP_C2_DAC_L_EN | RT5682_HP_C2_DAC_R_EN, 0);
+ snd_soc_component_update_bits(component, RT5682_CHARGE_PUMP_1,
+ RT5682_CP_SW_SIZE_MASK, RT5682_CP_SW_SIZE_M);
snd_soc_component_update_bits(component,
RT5682_DEPOP_1, 0x60, 0x0);
- snd_soc_component_write(component,
- RT5682_HP_CTRL_2, 0x0000);
snd_soc_component_update_bits(component,
RT5682_DAC_ADC_DIG_VOL1, 0x00c0, 0x0000);
break;
@@ -1637,6 +1647,23 @@ static SOC_VALUE_ENUM_SINGLE_DECL(rt5682_adcdat_pin_enum,
static const struct snd_kcontrol_new rt5682_adcdat_pin_ctrl =
SOC_DAPM_ENUM("ADCDAT", rt5682_adcdat_pin_enum);

+static const unsigned int rt5682_hpo_sig_out_values[] = {
+ 2,
+ 7,
+};
+
+static const char * const rt5682_hpo_sig_out_mode[] = {
+ "Legacy",
+ "OneBit",
+};
+
+static SOC_VALUE_ENUM_SINGLE_DECL(rt5682_hpo_sig_out_enum,
+ RT5682_HP_LOGIC_CTRL_2, 0, RT5682_HP_LC2_SIG_SOUR1_MASK,
+ rt5682_hpo_sig_out_mode, rt5682_hpo_sig_out_values);
+
+static const struct snd_kcontrol_new rt5682_hpo_sig_demux =
+ SOC_DAPM_ENUM("HPO Signal Demux", rt5682_hpo_sig_out_enum);
+
static const struct snd_soc_dapm_widget rt5682_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("LDO2", RT5682_PWR_ANLG_3, RT5682_PWR_LDO2_BIT,
0, NULL, 0),
@@ -1820,6 +1847,10 @@ static const struct snd_soc_dapm_widget rt5682_dapm_widgets[] = {
SND_SOC_DAPM_SWITCH("HPOR Playback", SND_SOC_NOPM, 0, 0,
&hpor_switch),

+ SND_SOC_DAPM_OUT_DRV("HPO Legacy", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_OUT_DRV("HPO OneBit", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_DEMUX("HPO Signal Demux", SND_SOC_NOPM, 0, 0, &rt5682_hpo_sig_demux),
+
/* CLK DET */
SND_SOC_DAPM_SUPPLY("CLKDET SYS", RT5682_CLK_DET,
RT5682_SYS_CLK_DET_SFT, 0, NULL, 0),
@@ -1987,10 +2018,19 @@ static const struct snd_soc_dapm_route rt5682_dapm_routes[] = {
{"HP Amp", NULL, "Charge Pump"},
{"HP Amp", NULL, "CLKDET SYS"},
{"HP Amp", NULL, "Vref1"},
- {"HPOL Playback", "Switch", "HP Amp"},
- {"HPOR Playback", "Switch", "HP Amp"},
+
+ {"HPO Signal Demux", NULL, "HP Amp"},
+
+ {"HPO Legacy", "Legacy", "HPO Signal Demux"},
+ {"HPO OneBit", "OneBit", "HPO Signal Demux"},
+
+ {"HPOL Playback", "Switch", "HPO Legacy"},
+ {"HPOR Playback", "Switch", "HPO Legacy"},
+
{"HPOL", NULL, "HPOL Playback"},
{"HPOR", NULL, "HPOR Playback"},
+ {"HPOL", NULL, "HPO OneBit"},
+ {"HPOR", NULL, "HPO OneBit"},
};

static int rt5682_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
diff --git a/sound/soc/codecs/rt5682.h b/sound/soc/codecs/rt5682.h
index b59221048ebf9..8e3244a62c160 100644
--- a/sound/soc/codecs/rt5682.h
+++ b/sound/soc/codecs/rt5682.h
@@ -375,6 +375,14 @@
#define RT5682_R_VOL_MASK (0x3f)
#define RT5682_R_VOL_SFT 0

+/* Headphone Amp Control 2 (0x0003) */
+#define RT5682_HP_C2_DAC_AMP_MUTE_SFT 15
+#define RT5682_HP_C2_DAC_AMP_MUTE (0x1 << 15)
+#define RT5682_HP_C2_DAC_L_EN_SFT 14
+#define RT5682_HP_C2_DAC_L_EN (0x1 << 14)
+#define RT5682_HP_C2_DAC_R_EN_SFT 13
+#define RT5682_HP_C2_DAC_R_EN (0x1 << 13)
+
/*Headphone Amp L/R Analog Gain and Digital NG2 Gain Control (0x0005 0x0006)*/
#define RT5682_G_HP (0xf << 8)
#define RT5682_G_HP_SFT 8
@@ -1265,6 +1273,10 @@
#define RT5682_HPA_CP_BIAS_6UA (0x3 << 2)

/* Charge Pump Internal Register1 (0x0125) */
+#define RT5682_CP_SW_SIZE_MASK (0x7 << 8)
+#define RT5682_CP_SW_SIZE_L (0x4 << 8)
+#define RT5682_CP_SW_SIZE_M (0x2 << 8)
+#define RT5682_CP_SW_SIZE_S (0x1 << 8)
#define RT5682_CP_CLK_HP_MASK (0x3 << 4)
#define RT5682_CP_CLK_HP_100KHZ (0x0 << 4)
#define RT5682_CP_CLK_HP_200KHZ (0x1 << 4)
@@ -1315,6 +1327,14 @@
#define RT5682_DEB_STO_DAC_MASK (0x7 << 4)
#define RT5682_DEB_80_MS (0x0 << 4)

+/* HP Behavior Logic Control 2 (0x01db) */
+#define RT5682_HP_LC2_SIG_SOUR2_MASK (0x1 << 4)
+#define RT5682_HP_LC2_SIG_SOUR2_REG (0x1 << 4)
+#define RT5682_HP_LC2_SIG_SOUR2_DC_CAL (0x0 << 4)
+#define RT5682_HP_LC2_SIG_SOUR1_MASK (0x7)
+#define RT5682_HP_LC2_SIG_SOUR1_1BIT (0x7)
+#define RT5682_HP_LC2_SIG_SOUR1_LEGA (0x2)
+
/* SAR ADC Inline Command Control 1 (0x0210) */
#define RT5682_SAR_BUTT_DET_MASK (0x1 << 15)
#define RT5682_SAR_BUTT_DET_EN (0x1 << 15)
--
2.33.0