ASoC: max98090: Move microphone bias voltage setting to probe function

Microphone bias level configuration register can configure voltage between
2.2 V and 2.8 V but doesn't manage is voltage on or off. Microphone bias
on/off state is controlled by "MICBIAS" DAPM widget.

Therefore there is no need to update bias voltage conditionally depending on
jack state each time when codec goes to SND_SOC_BIAS_ON state and setting
can be moved to max98090_probe() as driver currently doesn't support other
levels than 2.8 V.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/max98090.c

@@ -1795,13 +1795,6 @@ static int max98090_set_bias_level(struct snd_soc_codec *codec,
 
 	switch (level) {
 	case SND_SOC_BIAS_ON:
-		if (max98090->jack_state == M98090_JACK_STATE_HEADSET) {
-			/*
-			 * Set to normal bias level.
-			 */
-			snd_soc_update_bits(codec, M98090_REG_MIC_BIAS_VOLTAGE,
-				M98090_MBVSEL_MASK, M98090_MBVSEL_2V8);
-		}
 		break;
 
 	case SND_SOC_BIAS_PREPARE:
@@ -2296,6 +2289,9 @@ static int max98090_probe(struct snd_soc_codec *codec)
 	snd_soc_write(codec, M98090_REG_BIAS_CONTROL,
 		M98090_VCM_MODE_MASK);
 
+	snd_soc_update_bits(codec, M98090_REG_MIC_BIAS_VOLTAGE,
+		M98090_MBVSEL_MASK, M98090_MBVSEL_2V8);
+
 	max98090_handle_pdata(codec);
 
 	max98090_add_widgets(codec);