HACK: audio: collection of feature limitations to run LL in user

This is a set of temporary changes to audio code to remove calls
to privileged interfaces that are not mandatory to run simple
audio tests.

These need proper solutions to be able to run all use-cases in user
LL version.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

src/audio/pipeline/pipeline-graph.c

@@ -556,6 +556,10 @@ struct comp_dev *pipeline_get_dai_comp(uint32_t pipeline_id, int dir)
  */
 struct comp_dev *pipeline_get_dai_comp_latency(uint32_t pipeline_id, uint32_t *latency)
 {
+#ifdef CONFIG_SOF_USERSPACE_LL
+	LOG_WRN("latency cannot be computed in user-space pipelines!");
+	*latency = 0;
+#else
 	struct ipc_comp_dev *ipc_sink;
 	struct ipc_comp_dev *ipc_source;
 	struct comp_dev *source;
@@ -623,7 +627,7 @@ struct comp_dev *pipeline_get_dai_comp_latency(uint32_t pipeline_id, uint32_t *l
 		/* Get a next sink component */
 		ipc_sink = ipc_get_ppl_sink_comp(ipc, source->pipeline->pipeline_id);
 	}
-
+#endif
 	return NULL;
 }
 EXPORT_SYMBOL(pipeline_get_dai_comp_latency);

zephyr/include/sof/lib/cpu.h

@@ -55,7 +55,11 @@ static inline bool cpu_is_primary(int id)
 
 static inline bool cpu_is_me(int id)
 {
+#ifdef CONFIG_SOF_USERSPACE_LL
+	return true;
+#else
 	return id == cpu_get_id();
+#endif
 }
 
 int cpu_enable_core(int id);