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ASoC: arizona: Add utility function to check if an input is analog 

We will occasionally require to take different action based on if an
input is analog or digital so add a helper function to return if an
input is analog.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2015-09-16 13:59:41 +01:00 committed by Mark Brown
parent bee261b896
commit 002b083b8d
2 changed files with 11 additions and 0 deletions
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9
sound/soc/codecs/arizona.c
View File

@ -691,6 +691,15 @@ static void arizona_in_set_vu(struct snd_soc_codec *codec, int ena)
ARIZONA_IN_VU, val);
}
bool arizona_input_analog(struct snd_soc_codec *codec, int shift)
{
unsigned int reg = ARIZONA_IN1L_CONTROL + ((shift / 2) * 8);
unsigned int val = snd_soc_read(codec, reg);
return !(val & ARIZONA_IN1_MODE_MASK);
}
EXPORT_SYMBOL_GPL(arizona_input_analog);
int arizona_in_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
int event)
{

2
sound/soc/codecs/arizona.h
View File

@ -294,4 +294,6 @@ extern int arizona_init_dai(struct arizona_priv *priv, int dai);
int arizona_set_output_mode(struct snd_soc_codec *codec, int output,
bool diff);
extern bool arizona_input_analog(struct snd_soc_codec *codec, int shift);
#endif