audio: Fix channel swap issue on wired headset
- While playing stereo content on wired headset, the channels
are swapped always.
- This is due to limitation on headset specific mixer controls
enable sequence. For correct channel mapping from DSP to
Slimbus and then to Codec, it is required to enable the left
channel specific mixer controls first and then right channel
mixer controls. But the audioroute library does not follow
the order specified in the mixer_paths.xml but the order
of mixer controls queried from mixer card. In this order,
right channel specific mixer control is enabled first which
leads right channel data from DSP is routed to first slimbus
channel and left channel PCM to second slimbus channel.
- Fixed by making left channel specific mixer control as a
default connection so that it will always be connected first
slimbus channel and hence headphone left path.
Bug: 9208566
Change-Id: Ib807e2d09b49725ab0e25b4458f8c170cd5bc2de
diff --git a/mixer_paths.xml b/mixer_paths.xml
index 5cd0662..a2c60e1 100644
--- a/mixer_paths.xml
+++ b/mixer_paths.xml
@@ -115,7 +115,8 @@
<ctl name="DAC1 Switch" value="0" />
<ctl name="SLIM_0_RX Channels" value="One" />
<ctl name="SLIM_0_TX Channels" value="One" />
- <ctl name="SLIM RX1 MUX" value="ZERO" />
+ <ctl name="SLIM RX1 MUX" value="AIF1_PB" />
+ <ctl name="SLIM RX2 MUX" value="ZERO" />
<ctl name="SPK DRV Volume" value="6" />
<ctl name="AIF1_CAP Mixer SLIM TX7" value="0" />
<ctl name="AIF1_CAP Mixer SLIM TX8" value="0"/>
