audio: Legacy: Remove BT SCO workaround

WiLink 8 is now able to provide the PCM clocks until the
voice call is completely terminated, so there is no risk of
blocking read() and write() calls anymore. The workaround
is no longer needed, so it is removed.

Change-Id: Idb9c4d9dc9e2940c9ce6a9f49448a2fa9ad76ae2
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>

1 files changed, 1 insertions, 16 deletions

diff --git a/audio/legacy/audio_hw.c b/audio/legacy/audio_hw.c
index 6152035..fc81c03 100644
--- a/audio/legacy/audio_hw.c
+++ b/audio/legacy/audio_hw.c
@@ -565,9 +565,6 @@ static int enter_voice_call(struct j6_audio_device *adev)
 
     ALOGI("enter_voice_call() entering bluetooth voice call");
 
-    audio_route_apply_path(adev->route, "BT SCO Master");
-    audio_route_update_mixer(adev->route);
-
     /* Let the primary output switch to a dummy sink */
     if (adev->out)
         do_out_standby(adev->out);
@@ -580,7 +577,7 @@ static int enter_voice_call(struct j6_audio_device *adev)
     ret = voice_stream_init(&voice->ul, adev->in_port, adev->bt_port, false);
     if (ret) {
         ALOGE("enter_voice_call() failed to init uplink %d", ret);
-        goto err_ul_init;
+        return ret;
     }
 
     /* Downlink: BT (8kHz) -> HP/Spk (44.1kHz) */
@@ -620,9 +617,6 @@ static int enter_voice_call(struct j6_audio_device *adev)
     voice_stream_exit(&voice->ul);
  err_dl_init:
     voice_stream_exit(&voice->dl);
- err_ul_init:
-    audio_route_reset_path(adev->route, "BT SCO Master");
-    audio_route_update_mixer(adev->route);
 
     return ret;
 }
@@ -638,15 +632,6 @@ static void leave_voice_call(struct j6_audio_device *adev)
 
     adev->in_call = false;
 
-    /*
-     * The PCM ports used for Bluetooth are slaves and they can lose the
-     * BCLK and FSYNC while still active. That leads to blocking read() and
-     * write() calls, which is prevented by switching the clock source to
-     * an internal one and explicitly stopping both ports for the new source
-     * to take effect at kernel level
-     */
-    audio_route_reset_path(adev->route, "BT SCO Master");
-    audio_route_update_mixer(adev->route);
     if (ul->pcm_out)
         pcm_stop(ul->pcm_out);
     if (dl->pcm_in)