Originally, lineout playback source can only be DAC_3RD. Some SoC
masters only support stereo MTKAIF outputs, so lineout path can't be
used in such case.
MTKAIF connections are as follows.
MOSI0 -> DAC_L
MOSI1 -> DAC_R
MOSI2 -> DAC_3rd
In the patch, lineout playback source can be chosen between DAC_L and
DAC_3rd, so sound can be outputted via lineout even though SoC only
supports stereo MTKAIF outputs.
Signed-off-by: Trevor Wu <trevor.wu@xxxxxxxxxxxx>
---
sound/soc/codecs/mt6359.c | 44 +++++++++++++++++++++++++++++++--------
1 file changed, 35 insertions(+), 9 deletions(-)
diff --git a/sound/soc/codecs/mt6359.c b/sound/soc/codecs/mt6359.c
index a37ad61a8253..30690479ec17 100644
--- a/sound/soc/codecs/mt6359.c
+++ b/sound/soc/codecs/mt6359.c
@@ -1159,9 +1159,10 @@ static int mt_lo_event(struct snd_soc_dapm_widget *w,
{
struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
struct mt6359_priv *priv = snd_soc_component_get_drvdata(cmpnt);
+ unsigned int mux = dapm_kcontrol_get_value(w->kcontrols[0]);
dev_dbg(priv->dev, "%s(), event 0x%x, mux %u\n",
- __func__, event, dapm_kcontrol_get_value(w->kcontrols[0]));
+ __func__, event, mux);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
@@ -1199,14 +1200,29 @@ static int mt_lo_event(struct snd_soc_dapm_widget *w,
/* Enable AUD_CLK */
mt6359_set_decoder_clk(priv, true);
- /* Enable Audio DAC (3rd DAC) */
- regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON7, 0x3113);
- /* Enable low-noise mode of DAC */
- if (priv->dev_counter[DEVICE_HP] == 0)
- regmap_write(priv->regmap,
- MT6359_AUDDEC_ANA_CON9, 0x0001);
- /* Switch LOL MUX to audio 3rd DAC */
- regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON7, 0x311b);
+ /* Switch LOL MUX to audio DAC */
+ if (mux == LO_MUX_L_DAC) {
+ if (priv->dev_counter[DEVICE_HP] > 0) {
+ dev_info(priv->dev, "%s(), can not enable DAC, hp count %d\n",
+ __func__, priv->dev_counter[DEVICE_HP]);
+ break;
+ }
+ /* Enable DACL and switch HP MUX to open*/
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON0, 0x3009);
+ /* Disable low-noise mode of DAC */
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON9, 0xf200);
+ usleep_range(100, 120);
+ /* Switch LOL MUX to DACL */
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON7, 0x0117);
+ } else if (mux == LO_MUX_3RD_DAC) {
+ /* Enable Audio DAC (3rd DAC) */
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON7, 0x3113);
+ /* Enable low-noise mode of DAC */
+ if (priv->dev_counter[DEVICE_HP] == 0)
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON9, 0x0001);
+ /* Switch LOL MUX to audio 3rd DAC */
+ regmap_write(priv->regmap, MT6359_AUDDEC_ANA_CON7, 0x311b);
+ }
break;
case SND_SOC_DAPM_PRE_PMD:
/* Switch LOL MUX to open */
@@ -1218,6 +1234,15 @@ static int mt_lo_event(struct snd_soc_dapm_widget *w,
regmap_update_bits(priv->regmap, MT6359_AUDDEC_ANA_CON0,
0x000f, 0x0000);
+ if (mux == LO_MUX_L_DAC) {
+ /* Disable HP driver core circuits */
+ regmap_update_bits(priv->regmap, MT6359_AUDDEC_ANA_CON0,
+ 0x3 << 4, 0x0);
+ /* Disable HP driver bias circuits */
+ regmap_update_bits(priv->regmap, MT6359_AUDDEC_ANA_CON0,
+ 0x3 << 6, 0x0);
+ }
+
/* Disable AUD_CLK */
mt6359_set_decoder_clk(priv, false);
@@ -2590,6 +2615,7 @@ static const struct snd_soc_dapm_route mt6359_dapm_routes[] = {
/* Lineout Path */
{"LOL Mux", "Playback", "DAC_3RD"},
+ {"LOL Mux", "Playback_L_DAC", "DACL"},
{"LINEOUT L", NULL, "LOL Mux"},
/* Headphone Path */
--
2.18.0
