ASoC: rt5640: fix line out no sound issue

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@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 9bc78e57513d74e40c5a4f9bda59c34625b15715..ff72cd8c236ed5fb01bfd3cb948a3759656be557 100644 (file)
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -984,6 +984,35 @@ static int rt5640_hp_event(struct snd_soc_dapm_widget *w,
        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)
 {
@@ -1179,13 +1208,16 @@ static const struct snd_soc_dapm_widget rt5640_dapm_widgets[] = {
                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,
@@ -1500,8 +1532,10 @@ static const struct snd_soc_dapm_route rt5640_dapm_routes[] = {
        {"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[] = {