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| author | Liam Girdwood | 2012-01-11 13:43:24 +0100 |
|---|---|---|
| committer | Liam Girdwood | 2012-01-11 13:43:24 +0100 |
| commit | e48b46ba169181dc88ea48e31dcb4afcf8778397 (patch) | |
| tree | 48aea71559fec05f3cfab43602657aaa60cf8627 /sound/soc/codecs | |
| parent | ASoC: cx20442: add bias control over a platform provided regulator (diff) | |
| download | kernel-qcow2-linux-e48b46ba169181dc88ea48e31dcb4afcf8778397.tar.gz kernel-qcow2-linux-e48b46ba169181dc88ea48e31dcb4afcf8778397.tar.xz kernel-qcow2-linux-e48b46ba169181dc88ea48e31dcb4afcf8778397.zip | |
ASoC: twl6040 - Add method to query optimum PDM_DL1 gain
The DL1 PDM interface adds a little gain depending on the output device.
Add a method to retrieve the gain value for machine driver usage.
Signed-off-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound/soc/codecs')
| -rw-r--r-- | sound/soc/codecs/twl6040.c | 23 | ||||
| -rw-r--r-- | sound/soc/codecs/twl6040.h | 1 |
2 files changed, 24 insertions, 0 deletions
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c index 3376e6fad2a2..5b9c79b6f65e 100644 --- a/sound/soc/codecs/twl6040.c +++ b/sound/soc/codecs/twl6040.c @@ -33,6 +33,7 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> +#include <sound/soc-dapm.h> #include <sound/initval.h> #include <sound/tlv.h> @@ -1012,6 +1013,28 @@ static int twl6040_pll_put_enum(struct snd_kcontrol *kcontrol, return 0; } +int twl6040_get_dl1_gain(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_context *dapm = &codec->dapm; + + if (snd_soc_dapm_get_pin_status(dapm, "EP")) + return -1; /* -1dB */ + + if (snd_soc_dapm_get_pin_status(dapm, "HSOR") || + snd_soc_dapm_get_pin_status(dapm, "HSOL")) { + + u8 val = snd_soc_read(codec, TWL6040_REG_HSLCTL); + if (val & TWL6040_HSDACMODE) + /* HSDACL in LP mode */ + return -8; /* -8dB */ + else + /* HSDACL in HP mode */ + return -1; /* -1dB */ + } + return 0; /* 0dB */ +} +EXPORT_SYMBOL_GPL(twl6040_get_dl1_gain); + int twl6040_get_clk_id(struct snd_soc_codec *codec) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); diff --git a/sound/soc/codecs/twl6040.h b/sound/soc/codecs/twl6040.h index a83277bdb851..ef273f1fac2f 100644 --- a/sound/soc/codecs/twl6040.h +++ b/sound/soc/codecs/twl6040.h @@ -34,6 +34,7 @@ enum twl6040_trim { #define TWL6040_HSF_TRIM_LEFT(x) (x & 0x0f) #define TWL6040_HSF_TRIM_RIGHT(x) ((x >> 4) & 0x0f) +int twl6040_get_dl1_gain(struct snd_soc_codec *codec); void twl6040_hs_jack_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack, int report); int twl6040_get_clk_id(struct snd_soc_codec *codec); |