ASoC: sdp4430 - Add Mic Bias for digital mics in legacy mode
Add microphone bias for digital microphone in legacy mode.
Change-Id: Idc37babbf7acd552c6fbefe51315492e861116eb
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c
index 82523d7..0581685 100644
--- a/sound/soc/omap/sdp4430.c
+++ b/sound/soc/omap/sdp4430.c
@@ -383,6 +383,39 @@
return ret;
}
+/* SDP4430 digital microphones DAPM */
+static const struct snd_soc_dapm_widget sdp4430_dmic_dapm_widgets[] = {
+ SND_SOC_DAPM_MIC("Digital Mic Legacy", NULL),
+};
+
+static const struct snd_soc_dapm_route dmic_audio_map[] = {
+ {"DMic", NULL, "Digital Mic1 Bias"},
+ {"Digital Mic1 Bias", NULL, "Digital Mic Legacy"},
+};
+
+static int sdp4430_dmic_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ int ret;
+
+ ret = snd_soc_dapm_new_controls(dapm, sdp4430_dmic_dapm_widgets,
+ ARRAY_SIZE(sdp4430_dmic_dapm_widgets));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_add_routes(dapm, dmic_audio_map,
+ ARRAY_SIZE(dmic_audio_map));
+ if (ret)
+ return ret;
+
+ snd_soc_dapm_enable_pin(dapm, "Digital Mic Legacy");
+
+ ret = snd_soc_dapm_sync(dapm);
+
+ return ret;
+}
+
/* TODO: make this a separate BT CODEC driver or DUMMY */
static struct snd_soc_dai_driver dai[] = {
{
@@ -659,6 +692,7 @@
.codec_dai_name = "dmic-hifi",
.codec_name = "dmic-codec.0",
+ .init = sdp4430_dmic_init,
.ops = &sdp4430_dmic_ops,
},