PM8916 supports an earpiece as another (small) speaker. The earpiece is routed through RX MIX1 similarly to the headphones, except that RDAC2 MUX is set to RX1.

Signed-off-by: Stephan Gerhold stephan@gerhold.net --- This patch is based on code from the downstream driver (msm8x16-wcd.c, [1]) with some cleanup.

This enables the earpiece on the Samsung Galaxy A5 (2015), which has recently gained mainline support in [2].

[1]: https://source.codeaurora.org/quic/la/kernel/msm-3.10/tree/sound/soc/codecs/... [2]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... --- sound/soc/codecs/msm8916-wcd-analog.c | 54 ++++++++++++++++++++++++++- 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c index e3d311fb510e..f53235be77d9 100644 --- a/sound/soc/codecs/msm8916-wcd-analog.c +++ b/sound/soc/codecs/msm8916-wcd-analog.c @@ -228,6 +228,10 @@ #define CDC_A_RX_EAR_CTL (0xf19E) #define RX_EAR_CTL_SPK_VBAT_LDO_EN_MASK BIT(0) #define RX_EAR_CTL_SPK_VBAT_LDO_EN_ENABLE BIT(0) +#define RX_EAR_CTL_PA_EAR_PA_EN_MASK BIT(6) +#define RX_EAR_CTL_PA_EAR_PA_EN_ENABLE BIT(6) +#define RX_EAR_CTL_PA_SEL_MASK BIT(7) +#define RX_EAR_CTL_PA_SEL BIT(7)

#define CDC_A_SPKR_DAC_CTL (0xf1B0) #define SPKR_DAC_CTL_DAC_RESET_MASK BIT(4) @@ -312,6 +316,7 @@ static const char *const hph_text[] = { "ZERO", "Switch", }; static const struct soc_enum hph_enum = SOC_ENUM_SINGLE_VIRT( ARRAY_SIZE(hph_text), hph_text);

+static const struct snd_kcontrol_new ear_mux = SOC_DAPM_ENUM("EAR_S", hph_enum); static const struct snd_kcontrol_new hphl_mux = SOC_DAPM_ENUM("HPHL", hph_enum); static const struct snd_kcontrol_new hphr_mux = SOC_DAPM_ENUM("HPHR", hph_enum);

@@ -685,6 +690,34 @@ static int pm8916_wcd_analog_enable_spk_pa(struct snd_soc_dapm_widget *w, return 0; }

+static int pm8916_wcd_analog_enable_ear_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); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL, + RX_EAR_CTL_PA_SEL_MASK, RX_EAR_CTL_PA_SEL); + break; + case SND_SOC_DAPM_POST_PMU: + snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL, + RX_EAR_CTL_PA_EAR_PA_EN_MASK, + RX_EAR_CTL_PA_EAR_PA_EN_ENABLE); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL, + RX_EAR_CTL_PA_EAR_PA_EN_MASK, 0); + /* Delay to reduce ear turn off pop */ + usleep_range(7000, 7100); + snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL, + RX_EAR_CTL_PA_SEL_MASK, 0); + 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}, @@ -801,12 +834,20 @@ static const struct snd_soc_dapm_route pm8916_wcd_analog_audio_map[] = { {"PDM_TX", NULL, "A_MCLK2"}, {"A_MCLK2", NULL, "A_MCLK"},

+ /* Earpiece (RX MIX1) */ + {"EAR", NULL, "EAR_S"}, + {"EAR_S", "Switch", "EAR PA"}, + {"EAR PA", NULL, "RX_BIAS"}, + {"EAR PA", NULL, "HPHL DAC"}, + {"EAR PA", NULL, "HPHR DAC"}, + {"EAR PA", NULL, "EAR CP"}, + /* Headset (RX MIX1 and RX MIX2) */ {"HEADPHONE", NULL, "HPHL PA"}, {"HEADPHONE", NULL, "HPHR PA"},

- {"HPHL PA", NULL, "EAR_HPHL_CLK"}, - {"HPHR PA", NULL, "EAR_HPHR_CLK"}, + {"HPHL DAC", NULL, "EAR_HPHL_CLK"}, + {"HPHR DAC", NULL, "EAR_HPHR_CLK"},

{"CP", NULL, "NCP_CLK"},

@@ -847,11 +888,20 @@ static const struct snd_soc_dapm_widget pm8916_wcd_analog_dapm_widgets[] = { SND_SOC_DAPM_INPUT("AMIC1"), SND_SOC_DAPM_INPUT("AMIC3"), SND_SOC_DAPM_INPUT("AMIC2"), + SND_SOC_DAPM_OUTPUT("EAR"), SND_SOC_DAPM_OUTPUT("HEADPHONE"),

/* RX stuff */ SND_SOC_DAPM_SUPPLY("INT_LDO_H", SND_SOC_NOPM, 1, 0, NULL, 0),

+ SND_SOC_DAPM_PGA_E("EAR PA", SND_SOC_NOPM, + 0, 0, NULL, 0, + pm8916_wcd_analog_enable_ear_pa, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), + 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_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,

The patch

ASoC: msm8916-wcd-analog: Fix RX1 selection in RDAC2 MUX

has been applied to the asoc tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.4

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 9110d1b0e229cebb1ffce0c04db2b22beffd513d Mon Sep 17 00:00:00 2001

From: Stephan Gerhold stephan@gerhold.net Date: Sun, 20 Oct 2019 17:30:06 +0200 Subject: [PATCH] ASoC: msm8916-wcd-analog: Fix RX1 selection in RDAC2 MUX

According to the PM8916 Hardware Register Description, CDC_D_CDC_CONN_HPHR_DAC_CTL has only a single bit (RX_SEL) to switch between RX1 (0) and RX2 (1). It is not possible to disable it entirely to achieve the "ZERO" state.

However, at the moment the "RDAC2 MUX" mixer defines three possible values ("ZERO", "RX2" and "RX1"). Setting the mixer to "ZERO" actually configures it to RX1. Setting the mixer to "RX1" has (seemingly) no effect.

Remove "ZERO" and replace it with "RX1" to fix this.

Fixes: 585e881e5b9e ("ASoC: codecs: Add msm8916-wcd analog codec") Signed-off-by: Stephan Gerhold stephan@gerhold.net Acked-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Link: https://lore.kernel.org/r/20191020153007.206070-1-stephan@gerhold.net Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/msm8916-wcd-analog.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c index 667e9f73aba3..e3d311fb510e 100644 --- a/sound/soc/codecs/msm8916-wcd-analog.c +++ b/sound/soc/codecs/msm8916-wcd-analog.c @@ -306,7 +306,7 @@ struct pm8916_wcd_analog_priv { };

static const char *const adc2_mux_text[] = { "ZERO", "INP2", "INP3" }; -static const char *const rdac2_mux_text[] = { "ZERO", "RX2", "RX1" }; +static const char *const rdac2_mux_text[] = { "RX1", "RX2" }; static const char *const hph_text[] = { "ZERO", "Switch", };

static const struct soc_enum hph_enum = SOC_ENUM_SINGLE_VIRT( @@ -321,7 +321,7 @@ static const struct soc_enum adc2_enum = SOC_ENUM_SINGLE_VIRT(

/* RDAC2 MUX */ static const struct soc_enum rdac2_mux_enum = SOC_ENUM_SINGLE( - CDC_D_CDC_CONN_HPHR_DAC_CTL, 0, 3, rdac2_mux_text); + CDC_D_CDC_CONN_HPHR_DAC_CTL, 0, 2, rdac2_mux_text);

static const struct snd_kcontrol_new spkr_switch[] = { SOC_DAPM_SINGLE("Switch", CDC_A_SPKR_DAC_CTL, 7, 1, 0)