[PATCH 2/5] staging: max98927: Added controls for Envelope tracking

From: Ryan Lee
Date: Thu May 18 2017 - 23:01:33 EST


Signed-off-by: Ryan Lee <ryans.lee@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/max98927.c | 20 ++++++++++++++++----
sound/soc/codecs/max98927.h | 4 ++++
2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/max98927.c b/sound/soc/codecs/max98927.c
index 99d6e41..cdee3a3 100644
--- a/sound/soc/codecs/max98927.c
+++ b/sound/soc/codecs/max98927.c
@@ -614,6 +614,18 @@ static SOC_ENUM_SINGLE_DECL(max98927_current_limit,
MAX98927_R0042_BOOST_CTRL1, 1,
max98927_current_limit_text);

+static const char * const max98927_env_track_headroom_text[] = {
+ "0.000V", "0.125V", "0.250V", "0.375V", "0.500V", "0.625V",
+ "0.750V", "0.875V", "1.000V", "1.125V", "1.250V", "1.375V",
+ "1.500V", "1.625V", "1.750V", "1.875V", "2.000V", "2.125V",
+ "2.250V", "2.375V", "2.500V", "2.625V", "2.750V", "2.875V",
+ "3.000V", "3.125V", "3.250V", "3.375V", "3.500V"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98927_env_track_headroom,
+ MAX98927_R0082_ENV_TRACK_VOUT_HEADROOM, 0,
+ max98927_env_track_headroom_text);
+
static const struct snd_kcontrol_new max98927_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Volume", MAX98927_R003C_SPK_GAIN,
0, 6, 0,
@@ -631,6 +643,9 @@ static const struct snd_kcontrol_new max98927_snd_controls[] = {
MAX98927_AMP_VOL_SEL_SHIFT, 1, 0),
SOC_ENUM("Boost Output Voltage", max98927_boost_voltage),
SOC_ENUM("Current Limit", max98927_current_limit),
+ SOC_SINGLE("EnvTrack Switch", MAX98927_R0086_ENV_TRACK_CTRL,
+ MAX98927_ENV_TRACKER_EN_SHIFT, 1, 0),
+ SOC_ENUM("EnvTrack Headroom", max98927_env_track_headroom),
};

static const struct snd_soc_dapm_route max98927_audio_map[] = {
@@ -726,13 +741,10 @@ static int max98927_probe(struct snd_soc_codec *codec)
/* Envelope Tracking configuration */
regmap_write(max98927->regmap,
MAX98927_R0082_ENV_TRACK_VOUT_HEADROOM,
- 0x08);
+ 0x0A);
regmap_write(max98927->regmap,
MAX98927_R0086_ENV_TRACK_CTRL,
0x01);
- regmap_write(max98927->regmap,
- MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ,
- 0x10);

/* voltage, current slot configuration */
regmap_write(max98927->regmap,
diff --git a/sound/soc/codecs/max98927.h b/sound/soc/codecs/max98927.h
index bf7a6f92..3069a09 100644
--- a/sound/soc/codecs/max98927.h
+++ b/sound/soc/codecs/max98927.h
@@ -250,6 +250,10 @@
#define MAX98927_BROWNOUT_DSP_EN (0x1 << 2)
#define MAX98927_BROWNOUT_DSP_SHIFT (2)

+/* MAX98927_R0086_ENV_TRACK_CTRL */
+#define MAX98927_ENV_TRACKER_EN (0x1 << 0)
+#define MAX98927_ENV_TRACKER_EN_SHIFT (0)
+
/* MAX98927_R0100_SOFT_RESET */
#define MAX98927_SOFT_RESET (0x1 << 0)

--
2.7.4