ASoC: tlv320aic3x: Remove even more unused code

Now that we're not implementing GPIO or microphone detection support
there's no users for the read() function any more.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 07efbedda1e9970482fe349cfd092a66315bf416..8d20f6ec20f35853b98e13735f5e540ef9c27c47 100644 (file)
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -121,30 +121,6 @@ static const u8 aic3x_reg[AIC3X_CACHEREGNUM] = {
        0x00, 0x00, 0x02,       /* 100 */
 };
 
-/*
- * read from the aic3x register space. Only use for this function is if
- * wanting to read volatile bits from those registers that has both read-only
- * and read/write bits. All other cases should use snd_soc_read.
- */
-static int aic3x_read(struct snd_soc_codec *codec, unsigned int reg,
-                     u8 *value)
-{
-       u8 *cache = codec->reg_cache;
-
-       if (codec->cache_only)
-               return -EINVAL;
-       if (reg >= AIC3X_CACHEREGNUM)
-               return -1;
-
-       codec->cache_bypass = 1;
-       *value = snd_soc_read(codec, reg);
-       codec->cache_bypass = 0;
-
-       cache[reg] = *value;
-
-       return 0;
-}
-
 #define SOC_DAPM_SINGLE_AIC3X(xname, reg, shift, mask, invert) \
 {      .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
        .info = snd_soc_info_volsw, \