ASoC: wm_hubs: Push check for idle_bias_off out into drivers

For later wm_hubs devices we have much less need to keep the biases up
even when using single ended line outputs so flag idle_bias_off for
everything except the WM8993 and WM8994.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 474dc72b4d8d..db51007a6a43 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -1622,6 +1622,12 @@ static int wm8993_probe(struct snd_soc_codec *codec)
         wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
                                     wm8993->pdata.lineout2_diff);
 
+        /* If the line outputs are differential then we aren't presenting
+         * VMID as an output and can disable it.
+         */
+        if (wm8993->pdata.lineout1_diff && wm8993->pdata.lineout2_diff)
+                codec->dapm.idle_bias_off = 1;
+
         return 0;
 
 }