[alsa-devel] [PATCH] ASoC: Ensure sane WM835x AIF configuration by default

[Mark Brown]

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 at wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8350.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index 4f3e919..7611add 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);
-- 
1.7.1