DP: module: Fix period calculation for DP modules

The OBS parameter for module could be set to higher value
than the one defined by stream output format. This could result
in wrong calculation of period parameter.
Due to this issue we observe SRC tests regression on LNL platform.

This patch adds output stream format to period calculation in addition
to the one calculated from OBS. Lower value is selected.
Also period is round down to represent integer multiple of LL ticks.

Signed-off-by: Jaroslaw Stelter <Jaroslaw.Stelter@intel.com>

src/audio/module_adapter/module_adapter.c

@@ -19,6 +19,7 @@
 #include <sof/audio/sink_source_utils.h>
 #include <sof/audio/dp_queue.h>
 #include <sof/audio/pipeline.h>
+#include <sof/schedule/ll_schedule_domain.h>
 #include <sof/common.h>
 #include <sof/platform.h>
 #include <sof/ut.h>
@@ -240,9 +241,17 @@ static int module_adapter_dp_queue_prepare(struct comp_dev *dev)
 			 &sink_buffer->stream.runtime_stream_params,
 			 sizeof(sink_buffer->stream.runtime_stream_params));
 		/* calculate time required the module to provide OBS data portion - a period */
-		unsigned int sink_period = 1000000 * sink_get_min_free_space(mod->sinks[i]) /
+		uint32_t min_free_size =
+			sink_get_frame_bytes(mod->sinks[i]) *
+			(sink_get_rate(mod->sinks[i]) / (USEC_PER_SEC / LL_TIMER_PERIOD_US));
+		min_free_size = MIN(min_free_size, sink_get_min_free_space(mod->sinks[i]));
+
+		unsigned int sink_period = 1000000 * min_free_size /
 					   (sink_get_frame_bytes(mod->sinks[i]) *
 					   sink_get_rate(mod->sinks[i]));
+		/* Round down period to integer number of LL ticks */
+		sink_period = (sink_period / LL_TIMER_PERIOD_US) * LL_TIMER_PERIOD_US;
+
 		/* note the minimal period for the module */
 		if (period > sink_period)
 			period = sink_period;