ASoC: tlv320aic32x4: Fix problem with first capture.
In its previous status, the first capture didn't work properly;
nothing was actually recorded from the microphone. This
behaviour was observed using a Visstrim M10 board.
In order to solve this BUG a workaround has been added that,
during the initialization process of the codec, powers on and
off the ADC.
The issue seems related to a HW BUG or some behavior that
is not documented in the datasheet.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/tlv320aic32x4.h b/sound/soc/codecs/tlv320aic32x4.h
index aae2b24..3577422 100644
--- a/sound/soc/codecs/tlv320aic32x4.h
+++ b/sound/soc/codecs/tlv320aic32x4.h
@@ -94,6 +94,9 @@
#define AIC32X4_WORD_LEN_24BITS 0x02
#define AIC32X4_WORD_LEN_32BITS 0x03
+#define AIC32X4_LADC_EN (1 << 7)
+#define AIC32X4_RADC_EN (1 << 6)
+
#define AIC32X4_I2S_MODE 0x00
#define AIC32X4_DSP_MODE 0x01
#define AIC32X4_RIGHT_JUSTIFIED_MODE 0x02