commit 41f2d8f07b1f698ed5f5b49dd287b14394da3231
author Simon Wilson <simonwilson@google.com> Tue Sep 06 20:08:51 2011 -0700
committer Simon Wilson <simonwilson@google.com> Tue Sep 06 20:08:53 2011 -0700
tree f0be5fad44bab8f1f5db6c4d330e5256f0ed50d3
parent 6fbf877df8495e084cab3e0d0916e6fcb19c902d

audio: enable 450Hz high-pass filter for speaker

This filters out frequencies that can damage the speaker.

Change-Id: I35946c9ee3e80be673643ef40129e7e5214a0d8b

audio/audio_hw.c

diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 74cee09..fae3e00 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -40,6 +40,8 @@
 #include "ril_interface.h"
 
 /* Mixer control names */
+#define MIXER_DL2_LEFT_EQUALIZER            "DL2 Left Equalizer"
+#define MIXER_DL2_RIGHT_EQUALIZER           "DL2 Right Equalizer"
 #define MIXER_DL1_MEDIA_PLAYBACK_VOLUME     "DL1 Media Playback Volume"
 #define MIXER_DL1_VOICE_PLAYBACK_VOLUME     "DL1 Voice Playback Volume"
 #define MIXER_DL2_MEDIA_PLAYBACK_VOLUME     "DL2 Media Playback Volume"
@@ -90,6 +92,7 @@
 #define MIXER_AMIC1                         "AMic1"
 #define MIXER_BT_LEFT                       "BT Left"
 #define MIXER_BT_RIGHT                      "BT Right"
+#define MIXER_450HZ_HIGH_PASS               "450Hz High-pass"
 
 /* ALSA ports for OMAP4 */
 #define PORT_MM 0
@@ -188,6 +191,14 @@
 struct route_setting defaults[] = {
     /* general */
     {
+        .ctl_name = MIXER_DL2_LEFT_EQUALIZER,
+        .strval = MIXER_450HZ_HIGH_PASS,
+    },
+    {
+        .ctl_name = MIXER_DL2_RIGHT_EQUALIZER,
+        .strval = MIXER_450HZ_HIGH_PASS,
+    },
+    {
         .ctl_name = MIXER_DL1_MEDIA_PLAYBACK_VOLUME,
         .intval = MIXER_ABE_GAIN_0DB,
     },