ASoC: Implement WM8994 DAI tristate support

This also adds the first DAI operation for AIF3 so fill out the ID and
the ops for that too.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 29f3771..d01d309 100644 (file)
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -3332,6 +3332,36 @@ static int wm8994_aif_mute(struct snd_soc_dai *codec_dai, int mute)
        return 0;
 }
 
+static int wm8994_set_tristate(struct snd_soc_dai *codec_dai, int tristate)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       int reg, val, mask;
+
+       switch (codec_dai->id) {
+       case 1:
+               reg = WM8994_AIF1_MASTER_SLAVE;
+               mask = WM8994_AIF1_TRI;
+               break;
+       case 2:
+               reg = WM8994_AIF2_MASTER_SLAVE;
+               mask = WM8994_AIF2_TRI;
+               break;
+       case 3:
+               reg = WM8994_POWER_MANAGEMENT_6;
+               mask = WM8994_AIF3_TRI;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       if (tristate)
+               val = mask;
+       else
+               val = 0;
+
+       return snd_soc_update_bits(codec, reg, mask, reg);
+}
+
 #define WM8994_RATES SNDRV_PCM_RATE_8000_96000
 
 #define WM8994_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
@@ -3343,6 +3373,7 @@ static struct snd_soc_dai_ops wm8994_aif1_dai_ops = {
        .hw_params      = wm8994_hw_params,
        .digital_mute   = wm8994_aif_mute,
        .set_pll        = wm8994_set_fll,
+       .set_tristate   = wm8994_set_tristate,
 };
 
 static struct snd_soc_dai_ops wm8994_aif2_dai_ops = {
@@ -3351,6 +3382,11 @@ static struct snd_soc_dai_ops wm8994_aif2_dai_ops = {
        .hw_params      = wm8994_hw_params,
        .digital_mute   = wm8994_aif_mute,
        .set_pll        = wm8994_set_fll,
+       .set_tristate   = wm8994_set_tristate,
+};
+
+static struct snd_soc_dai_ops wm8994_aif3_dai_ops = {
+       .set_tristate   = wm8994_set_tristate,
 };
 
 struct snd_soc_dai wm8994_dai[] = {
@@ -3394,6 +3430,7 @@ struct snd_soc_dai wm8994_dai[] = {
        },
        {
                .name = "WM8994 AIF3",
+               .id = 3,
                .playback = {
                        .stream_name = "AIF3 Playback",
                        .channels_min = 2,
@@ -3408,6 +3445,7 @@ struct snd_soc_dai wm8994_dai[] = {
                        .rates = WM8994_RATES,
                        .formats = WM8994_FORMATS,
                },
+               .ops = &wm8994_aif3_dai_ops,
        }
 };
 EXPORT_SYMBOL_GPL(wm8994_dai);