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ASoC: arizona: Add signal activity output for DRC

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When doing signal activity detection, the only output from the DRC will
often be a GPIO pin. This patch adds a signal activity output that is
activated when a GPIO is configured to output the DRC signal activity
detection.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax
2013-07-04 08:56:28 +01:00
committed by Mark Brown
parent 326c29b6be
commit b63144e6c6
4 changed files with 49 additions and 0 deletions
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33
sound/soc/codecs/arizona.c
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@@ -19,6 +19,7 @@
#include <sound/tlv.h>
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/gpio.h>
#include <linux/mfd/arizona/registers.h>
#include "arizona.h"
@@ -223,6 +224,38 @@ int arizona_init_spk(struct snd_soc_codec *codec)
}
EXPORT_SYMBOL_GPL(arizona_init_spk);
int arizona_init_gpio(struct snd_soc_codec *codec)
{
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona *arizona = priv->arizona;
int i;
switch (arizona->type) {
case WM5110:
snd_soc_dapm_disable_pin(&codec->dapm, "DRC2 Signal Activity");
}
snd_soc_dapm_disable_pin(&codec->dapm, "DRC1 Signal Activity");
for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
switch (arizona->pdata.gpio_defaults[i] & ARIZONA_GPN_FN_MASK) {
case ARIZONA_GP_FN_DRC1_SIGNAL_DETECT:
snd_soc_dapm_enable_pin(&codec->dapm,
"DRC1 Signal Activity");
break;
case ARIZONA_GP_FN_DRC2_SIGNAL_DETECT:
snd_soc_dapm_enable_pin(&codec->dapm,
"DRC2 Signal Activity");
break;
default:
break;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(arizona_init_gpio);
const char *arizona_mixer_texts[ARIZONA_NUM_MIXER_INPUTS] = {
"None",
"Tone Generator 1",