[PATCH 2/3] ASoC: SOF: topology: allow for dynamic pipelines override for debug

[Pierre-Louis Bossart]

For debug and community support, it's useful to expose a kernel
parameter to prevent the use of dynamic pipelines exposed in a
topology file, or conversely to force an existing topology to use
dynamic pipelines.

Add an override bit and an enable bit which is valid only when the
override is set.

For products, the intent is that the topology file defines the
behavior, these two bits are only intended for diagnosis and
performance checks.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Bard Liao <bard.liao at intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
---
 sound/soc/sof/sof-priv.h | 6 ++++++
 sound/soc/sof/topology.c | 9 +++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 5c8fd21d2c6c..6a9b76b40f79 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -24,6 +24,12 @@
 #define SOF_DBG_ENABLE_TRACE	BIT(0)
 #define SOF_DBG_RETAIN_CTX	BIT(1)	/* prevent DSP D3 on FW exception */
 #define SOF_DBG_VERIFY_TPLG	BIT(2) /* verify topology during load */
+#define SOF_DBG_DYNAMIC_PIPELINES_OVERRIDE	BIT(3) /* 0: use topology token
+							* 1: override topology
+							*/
+#define SOF_DBG_DYNAMIC_PIPELINES_ENABLE	BIT(4) /* 0: use static pipelines
+							* 1: use dynamic pipelines
+							*/
 
 #define SOF_DBG_DUMP_REGS		BIT(0)
 #define SOF_DBG_DUMP_MBOX		BIT(1)
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index bd0d82b91465..cc6a96b552d3 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -1759,9 +1759,14 @@ static int sof_widget_load_pipeline(struct snd_soc_component *scomp, int index,
 		goto err;
 	}
 
-	dev_dbg(scomp->dev, "pipeline %s: period %d pri %d mips %d core %d frames %d\n",
+	if (sof_core_debug & SOF_DBG_DYNAMIC_PIPELINES_OVERRIDE)
+		swidget->dynamic_pipeline_widget = sof_core_debug &
+			SOF_DBG_DYNAMIC_PIPELINES_ENABLE;
+
+	dev_dbg(scomp->dev, "pipeline %s: period %d pri %d mips %d core %d frames %d dynamic %d\n",
 		swidget->widget->name, pipeline->period, pipeline->priority,
-		pipeline->period_mips, pipeline->core, pipeline->frames_per_sched);
+		pipeline->period_mips, pipeline->core, pipeline->frames_per_sched,
+		swidget->dynamic_pipeline_widget);
 
 	swidget->private = pipeline;
 
-- 
2.25.1