ASoC: arizona: Implement tristate support

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 819920dfa901db02b6498061be7ff740c3bb851f..e55fa034eecebb650209ac49573d7cad7157eddb 100644 (file)
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -803,11 +803,27 @@ static int arizona_dai_set_sysclk(struct snd_soc_dai *dai,
        return snd_soc_dapm_sync(&codec->dapm);
 }
 
+static int arizona_set_tristate(struct snd_soc_dai *dai, int tristate)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       int base = dai->driver->base;
+       unsigned int reg;
+
+       if (tristate)
+               reg = ARIZONA_AIF1_TRI;
+       else
+               reg = 0;
+
+       return snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
+                                  ARIZONA_AIF1_TRI, reg);
+}
+
 const struct snd_soc_dai_ops arizona_dai_ops = {
        .startup = arizona_startup,
        .set_fmt = arizona_set_fmt,
        .hw_params = arizona_hw_params,
        .set_sysclk = arizona_dai_set_sysclk,
+       .set_tristate = arizona_set_tristate,
 };
 EXPORT_SYMBOL_GPL(arizona_dai_ops);