diff --git a/services/audiopolicy/AudioPolicyManager.cpp b/services/audiopolicy/AudioPolicyManager.cpp
index 850fe86..b09ba71 100644
--- a/services/audiopolicy/AudioPolicyManager.cpp
+++ b/services/audiopolicy/AudioPolicyManager.cpp
@@ -1845,6 +1845,11 @@
         mEffects.valueAt(i)->dump(fd);
     }
 
+    snprintf(buffer, SIZE, "\nAudio Patches:\n");
+    write(fd, buffer, strlen(buffer));
+    for (size_t i = 0; i < mAudioPatches.size(); i++) {
+        mAudioPatches[i]->dump(fd, 2, i);
+    }
 
     return NO_ERROR;
 }
@@ -5206,6 +5211,8 @@
     char buffer[SIZE];
     String8 result;
 
+    snprintf(buffer, SIZE, " ID: %d\n", mId);
+    result.append(buffer);
     snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
     result.append(buffer);
     snprintf(buffer, SIZE, " Format: %08x\n", mFormat);
@@ -5289,6 +5296,8 @@
     char buffer[SIZE];
     String8 result;
 
+    snprintf(buffer, SIZE, " ID: %d\n", mId);
+    result.append(buffer);
     snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
     result.append(buffer);
     snprintf(buffer, SIZE, " Format: %d\n", mFormat);
@@ -6652,6 +6661,53 @@
     return NO_ERROR;
 }
 
+status_t AudioPolicyManager::AudioPatch::dump(int fd, int spaces, int index) const
+{
+    const size_t SIZE = 256;
+    char buffer[SIZE];
+    String8 result;
+
+
+    snprintf(buffer, SIZE, "%*sAudio patch %d:\n", spaces, "", index+1);
+    result.append(buffer);
+    snprintf(buffer, SIZE, "%*s- handle: %2d\n", spaces, "", mHandle);
+    result.append(buffer);
+    snprintf(buffer, SIZE, "%*s- audio flinger handle: %2d\n", spaces, "", mAfPatchHandle);
+    result.append(buffer);
+    snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mUid);
+    result.append(buffer);
+    snprintf(buffer, SIZE, "%*s- %d sources:\n", spaces, "", mPatch.num_sources);
+    result.append(buffer);
+    for (size_t i = 0; i < mPatch.num_sources; i++) {
+        if (mPatch.sources[i].type == AUDIO_PORT_TYPE_DEVICE) {
+            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
+                     mPatch.sources[i].id, enumToString(sDeviceNameToEnumTable,
+                                                        ARRAY_SIZE(sDeviceNameToEnumTable),
+                                                        mPatch.sources[i].ext.device.type));
+        } else {
+            snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
+                     mPatch.sources[i].id, mPatch.sources[i].ext.mix.handle);
+        }
+        result.append(buffer);
+    }
+    snprintf(buffer, SIZE, "%*s- %d sinks:\n", spaces, "", mPatch.num_sinks);
+    result.append(buffer);
+    for (size_t i = 0; i < mPatch.num_sinks; i++) {
+        if (mPatch.sinks[i].type == AUDIO_PORT_TYPE_DEVICE) {
+            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
+                     mPatch.sinks[i].id, enumToString(sDeviceNameToEnumTable,
+                                                        ARRAY_SIZE(sDeviceNameToEnumTable),
+                                                        mPatch.sinks[i].ext.device.type));
+        } else {
+            snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
+                     mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle);
+        }
+        result.append(buffer);
+    }
+
+    write(fd, result.string(), result.size());
+    return NO_ERROR;
+}
 
 // --- audio_policy.conf file parsing