ASoC: wm_hubs: Enable line out VMID buffer for single ended line outputs

BugLink: http://bugs.launchpad.net/bugs/931719

commit 77231abe55433aa17eca712718745275853fa66d upstream.

For optimal performance the single ended line outputs require that the
line output VMID buffer be enabled.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index 9e370d14ad8..1c2a47dcbea 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -589,6 +589,8 @@ SND_SOC_DAPM_INPUT("IN2RP:VXRP"),
 SND_SOC_DAPM_MICBIAS("MICBIAS2", WM8993_POWER_MANAGEMENT_1, 5, 0),
 SND_SOC_DAPM_MICBIAS("MICBIAS1", WM8993_POWER_MANAGEMENT_1, 4, 0),
 
+SND_SOC_DAPM_SUPPLY("LINEOUT_VMID_BUF", WM8993_ANTIPOP1, 7, 0, NULL, 0),
+
 SND_SOC_DAPM_MIXER("IN1L PGA", WM8993_POWER_MANAGEMENT_2, 6, 0,
                    in1l_pga, ARRAY_SIZE(in1l_pga)),
 SND_SOC_DAPM_MIXER("IN1R PGA", WM8993_POWER_MANAGEMENT_2, 4, 0,
@@ -794,9 +796,11 @@ static const struct snd_soc_dapm_route lineout1_diff_routes[] = {
 };
 
 static const struct snd_soc_dapm_route lineout1_se_routes[] = {
+        { "LINEOUT1N Mixer", NULL, "LINEOUT_VMID_BUF" },
         { "LINEOUT1N Mixer", "Left Output Switch", "Left Output PGA" },
         { "LINEOUT1N Mixer", "Right Output Switch", "Right Output PGA" },
 
+        { "LINEOUT1P Mixer", NULL, "LINEOUT_VMID_BUF" },
         { "LINEOUT1P Mixer", "Left Output Switch", "Left Output PGA" },
 
         { "LINEOUT1N Driver", NULL, "LINEOUT1N Mixer" },
@@ -813,9 +817,11 @@ static const struct snd_soc_dapm_route lineout2_diff_routes[] = {
 };
 
 static const struct snd_soc_dapm_route lineout2_se_routes[] = {
+        { "LINEOUT2N Mixer", NULL, "LINEOUT_VMID_BUF" },
         { "LINEOUT2N Mixer", "Left Output Switch", "Left Output PGA" },
         { "LINEOUT2N Mixer", "Right Output Switch", "Right Output PGA" },
 
+        { "LINEOUT2P Mixer", NULL, "LINEOUT_VMID_BUF" },
         { "LINEOUT2P Mixer", "Right Output Switch", "Right Output PGA" },
 
         { "LINEOUT2N Driver", NULL, "LINEOUT2N Mixer" },