ASoC: Ensure sane WM835x AIF configuration by default

Ensure that whatever ran before us leaves the WM835x with a sane default
audio interface configuration as we do not override the companding,
loopback or tristate settings and do not reset the chip at startup (as it
is a PMIC).

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

1 files changed, 7 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index 4f3e919a0755..7611add7f8c3 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -1586,6 +1586,13 @@ static  int wm8350_codec_probe(struct snd_soc_codec *codec)
         wm8350_set_bits(wm8350, WM8350_ROUT2_VOLUME,
                         WM8350_OUT2_VU | WM8350_OUT2R_MUTE);
 
+        /* Make sure AIF tristating is disabled by default */
+        wm8350_clear_bits(wm8350, WM8350_AI_FORMATING, WM8350_AIF_TRI);
+
+        /* Make sure we've got a sane companding setup too */
+        wm8350_clear_bits(wm8350, WM8350_ADC_DAC_COMP,
+                          WM8350_DAC_COMP | WM8350_LOOPBACK);
+
         /* Make sure jack detect is disabled to start off with */
         wm8350_clear_bits(wm8350, WM8350_JACK_DETECT,
                           WM8350_JDL_ENA | WM8350_JDR_ENA);