drm_edid_to_speaker_allocation
sad_count = drm_edid_to_speaker_allocation(amdgpu_connector->edid, &sadb);
sad_count = drm_edid_to_speaker_allocation(amdgpu_connector->edid, &sadb);
sad_count = drm_edid_to_speaker_allocation(amdgpu_connector->edid, &sadb);
sadb_count = drm_edid_to_speaker_allocation((struct edid *) edid->raw_edid, &sadb);
EXPORT_SYMBOL(drm_edid_to_speaker_allocation);
int drm_edid_to_speaker_allocation(const struct edid *edid, u8 **sadb);
sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb);