audio: add support for HDMI and speaker combo device

Bug: 7302453
Change-Id: I732656d185435f0f37437aba0b2f2dd49f65b101
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/alsa_sound/alsa_default.cpp b/alsa_sound/alsa_default.cpp
index 316921d..7c2449e 100644
--- a/alsa_sound/alsa_default.cpp
+++ b/alsa_sound/alsa_default.cpp
@@ -1335,6 +1335,9 @@
             } else {
                 return strdup(SND_USE_CASE_DEV_SPEAKER_HEADSET); /* COMBO SPEAKER+HEADSET RX */
             }
+        } else if ((devices & AudioSystem::DEVICE_OUT_SPEAKER) &&
+            ((devices & AudioSystem::DEVICE_OUT_AUX_DIGITAL))) {
+            return strdup(SND_USE_CASE_DEV_HDMI_SPEAKER);
 #ifdef QCOM_ANC_HEADSET_ENABLED
         } else if ((devices & AudioSystem::DEVICE_OUT_SPEAKER) &&
             ((devices & AudioSystem::DEVICE_OUT_ANC_HEADSET) ||