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Subject[PATCH 08/10] Added DAI Sel Mux and minor updates
Date
Signed-off-by: Ryan Lee <ryans.lee@maximintegrated.com>
---
'DAI Sel Mux' was added.
'max98927_volatile_reg' was added to identify volatile register.

sound/soc/codecs/max98927.c | 60 +++++++++++++++++++++++++++++++++------------
sound/soc/codecs/max98927.h | 2 --
2 files changed, 45 insertions(+), 17 deletions(-)

diff --git a/sound/soc/codecs/max98927.c b/sound/soc/codecs/max98927.c
index df2f4ff..6eb745bd 100755
--- a/sound/soc/codecs/max98927.c
+++ b/sound/soc/codecs/max98927.c
@@ -446,11 +446,24 @@ static int max98927_dac_event(struct snd_soc_dapm_widget *w,
return 0;
}

+static const char * const max98927_switch_text[] = {
+ "Left", "Right", "LeftRight"};
+
+static const struct soc_enum dai_sel_enum =
+ SOC_ENUM_SINGLE(MAX98927_R0025_PCM_TO_SPK_MONOMIX_A,
+ MAX98927_PCM_TO_SPK_MONOMIX_CFG_SHIFT,
+ 3, max98927_switch_text);
+
+static const struct snd_kcontrol_new max98927_dai_controls =
+ SOC_DAPM_ENUM("DAI Sel", dai_sel_enum);
+
static const struct snd_soc_dapm_widget max98927_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback", MAX98927_R003A_AMP_EN,
0, 0, max98927_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0,
+ &max98927_dai_controls),
SND_SOC_DAPM_OUTPUT("BE_OUT"),
};

@@ -476,12 +489,14 @@ static int max98927_spk_gain_put(struct snd_kcontrol *kcontrol,
struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec);
unsigned int sel = ucontrol->value.integer.value[0];

- if (sel < ((1 << MAX98927_Speaker_Gain_Width) - 1)) {
- regmap_update_bits(max98927->regmap,
- MAX98927_R003C_SPK_GAIN,
- MAX98927_SPK_PCM_GAIN_MASK, sel);
- max98927->spk_gain = sel;
- }
+ /* 0x7 is reserved */
+ if (sel > 6)
+ return -EINVAL;
+
+ regmap_update_bits(max98927->regmap,
+ MAX98927_R003C_SPK_GAIN,
+ MAX98927_SPK_PCM_GAIN_MASK, sel);
+ max98927->spk_gain = sel;
return 0;
}

@@ -538,6 +553,15 @@ static int max98927_amp_vol_get(struct snd_kcontrol *kcontrol,
MAX98927_AMP_VOL_SHIFT);
}

+static int max98927_amp_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ return max98927_reg_put(kcontrol, ucontrol,
+ MAX98927_R0036_AMP_VOL_CTRL,
+ MAX98927_AMP_VOL_SEL,
+ MAX98927_AMP_VOL_SHIFT);
+}
+
static int max98927_amp_dsp_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@@ -587,14 +611,6 @@ static int max98927_dre_en_get(struct snd_kcontrol *kcontrol,
MAX98927_R0039_DRE_CTRL,
MAX98927_DRE_CTRL_DRE_EN, 0);
}
-static int max98927_amp_vol_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- return max98927_reg_put(kcontrol, ucontrol,
- MAX98927_R0036_AMP_VOL_CTRL,
- MAX98927_AMP_VOL_SEL,
- 7);
-}
static int max98927_spk_src_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@@ -646,6 +662,15 @@ static bool max98927_readable_register(struct device *dev, unsigned int reg)
case MAX98927_R0100_SOFT_RESET:
case MAX98927_R01FF_REV_ID:
return true;
+ }
+ return false;
+};
+
+static bool max98927_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX98927_R0001_INT_RAW1 ... MAX98927_R0009_INT_FLAG3:
+ return true;
default:
return false;
}
@@ -711,7 +736,11 @@ static const struct snd_kcontrol_new max98927_snd_controls[] = {
};

static const struct snd_soc_dapm_route max98927_audio_map[] = {
- {"BE_OUT", NULL, "Amp Enable"},
+ {"Amp Enable", NULL, "DAI_OUT"},
+ {"DAI Sel Mux", "Left", "Amp Enable"},
+ {"DAI Sel Mux", "Right", "Amp Enable"},
+ {"DAI Sel Mux", "LeftRight", "Amp Enable"},
+ {"BE_OUT", NULL, "DAI Sel Mux"},
};

static struct snd_soc_dai_driver max98927_dai[] = {
@@ -888,6 +917,7 @@ static const struct regmap_config max98927_regmap = {
.reg_defaults = max98927_reg,
.num_reg_defaults = ARRAY_SIZE(max98927_reg),
.readable_reg = max98927_readable_register,
+ .volatile_reg = max98927_volatile_reg,
.cache_type = REGCACHE_RBTREE,
};

diff --git a/sound/soc/codecs/max98927.h b/sound/soc/codecs/max98927.h
index 2de8504..e13e18a 100755
--- a/sound/soc/codecs/max98927.h
+++ b/sound/soc/codecs/max98927.h
@@ -264,6 +264,4 @@ struct max98927_priv {
unsigned int master;
unsigned int digital_gain;
};
-#define MAX98927_Speaker_Gain_Width 3
-#define MAX98927_AMP_VOL_LOCATION_SHIFT 7
#endif
--
2.7.4
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