[PATCH 4.1 062/102] ASoC: rt5640: fix line out no sound issue

[Greg Kroah-Hartman]

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: John Lin <john.lin@xxxxxxxxxxx>

commit 9b850ca4f1c5acd7fcbbd4b38a2d27132801a8d5 upstream.

The power for line out was not turned on when line out is enabled.
So we add "LOUT amp" widget to turn on the power for line out.

Signed-off-by: John Lin <john.lin@xxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 sound/soc/codecs/rt5640.c |   40 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 37 insertions(+), 3 deletions(-)

--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -985,6 +985,35 @@ static int rt5640_hp_event(struct snd_so
 	return 0;
 }
 
+static int rt5640_lout_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		hp_amp_power_on(codec);
+		snd_soc_update_bits(codec, RT5640_PWR_ANLG1,
+			RT5640_PWR_LM, RT5640_PWR_LM);
+		snd_soc_update_bits(codec, RT5640_OUTPUT,
+			RT5640_L_MUTE | RT5640_R_MUTE, 0);
+		break;
+
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_update_bits(codec, RT5640_OUTPUT,
+			RT5640_L_MUTE | RT5640_R_MUTE,
+			RT5640_L_MUTE | RT5640_R_MUTE);
+		snd_soc_update_bits(codec, RT5640_PWR_ANLG1,
+			RT5640_PWR_LM, 0);
+		break;
+
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
 static int rt5640_hp_power_event(struct snd_soc_dapm_widget *w,
 			   struct snd_kcontrol *kcontrol, int event)
 {
@@ -1180,13 +1209,16 @@ static const struct snd_soc_dapm_widget
 		0, rt5640_spo_l_mix, ARRAY_SIZE(rt5640_spo_l_mix)),
 	SND_SOC_DAPM_MIXER("SPOR MIX", SND_SOC_NOPM, 0,
 		0, rt5640_spo_r_mix, ARRAY_SIZE(rt5640_spo_r_mix)),
-	SND_SOC_DAPM_MIXER("LOUT MIX", RT5640_PWR_ANLG1, RT5640_PWR_LM_BIT, 0,
+	SND_SOC_DAPM_MIXER("LOUT MIX", SND_SOC_NOPM, 0, 0,
 		rt5640_lout_mix, ARRAY_SIZE(rt5640_lout_mix)),
 	SND_SOC_DAPM_SUPPLY_S("Improve HP Amp Drv", 1, SND_SOC_NOPM,
 		0, 0, rt5640_hp_power_event, SND_SOC_DAPM_POST_PMU),
 	SND_SOC_DAPM_PGA_S("HP Amp", 1, SND_SOC_NOPM, 0, 0,
 		rt5640_hp_event,
 		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_PGA_S("LOUT amp", 1, SND_SOC_NOPM, 0, 0,
+		rt5640_lout_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
 	SND_SOC_DAPM_SUPPLY("HP L Amp", RT5640_PWR_ANLG1,
 		RT5640_PWR_HP_L_BIT, 0, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("HP R Amp", RT5640_PWR_ANLG1,
@@ -1501,8 +1533,10 @@ static const struct snd_soc_dapm_route r
 	{"HP R Playback", "Switch", "HP Amp"},
 	{"HPOL", NULL, "HP L Playback"},
 	{"HPOR", NULL, "HP R Playback"},
-	{"LOUTL", NULL, "LOUT MIX"},
-	{"LOUTR", NULL, "LOUT MIX"},
+
+	{"LOUT amp", NULL, "LOUT MIX"},
+	{"LOUTL", NULL, "LOUT amp"},
+	{"LOUTR", NULL, "LOUT amp"},
 };
 
 static const struct snd_soc_dapm_route rt5640_specific_dapm_routes[] = {


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