audio: module_adapter: remove process_audio_stream callback

src/audio/asrc/asrc.c

@@ -221,8 +221,6 @@ static int asrc_init(struct processing_module *mod)
 	 */
 	cd->track_drift = asrc_get_asynchronous_mode(ipc_asrc);
 	cd->skew = 0;
-	mod->skip_src_buffer_invalidate = true;
-	mod->skip_sink_buffer_writeback = true;
 
 	return 0;
 }

src/audio/mixin_mixout/mixin_mixout.c

@@ -150,8 +150,6 @@ static int mixin_init(struct processing_module *mod)
 		md->sink_config[i].gain = IPC4_MIXIN_UNITY_GAIN;
 	}
 
-	mod->skip_src_buffer_invalidate = true;
-
 	mod->max_sinks = MIXIN_MAX_SINKS;
 	return 0;
 }
@@ -169,8 +167,6 @@ static int mixout_init(struct processing_module *mod)
 
 	mod->priv.private = mo_data;
 
-	mod->skip_sink_buffer_writeback = true;
-
 	mod->max_sources = MIXOUT_MAX_SOURCES;
 	return 0;
 }

src/audio/module_adapter/README.md

@@ -81,7 +81,7 @@ To unify components operating directly in interrupt boundaries (DMA Low Latency
 For LL modules, processing is fully synchronous within the pipeline tick:
 
 1. `comp_copy()` invokes `module_adapter_copy()`.
-2. Data is fetched directly into `module_process_legacy()` or `module_process_sink_src()`.
+2. Data is fetched directly into `module_process_sink_src()`.
 3. `ops->process()` consumes upstream arrays and produces downstream arrays.
 
 ### Data Processing (DP) Execution

src/audio/module_adapter/module/README.md

@@ -16,7 +16,7 @@ It implements the full `struct module_interface` contract:
 
 * **Memory Management**: It intercepts memory allocation mappings using `mod_balloc_align` and tracks memory requests in a module-specific resource pool (`module_resource`). When the module goes out of scope, the framework garbage-collects any leaked allocations automatically via `mod_free_all()`.
 * **Configuration Handling**: Manages large blob configuration messages across multiple IPC fragments (`module_set_configuration`). It allocates memory for `runtime_params` until the blob is fully assembled, then triggers the underlying algorithm with the completed struct.
-* **State Machine Enforcement**: It wraps `process_audio_stream` calls to verify the module is in either `MODULE_IDLE` or `MODULE_PROCESSING` states before execution.
+* **State Machine Enforcement**: It wraps `process` calls to verify the module is in either `MODULE_IDLE` or `MODULE_PROCESSING` states before execution.
 
 ## 2. Modules (IADK Shim) Adapter (`modules.c`)
 

src/audio/module_adapter/module/generic.c

@@ -115,9 +115,8 @@ int module_init(struct processing_module *mod)
 		return -EIO;
 	}
 
-	/* check interface, there must be one and only one of processing procedure */
-	if (!interface->init ||
-	    (!!interface->process + !!interface->process_audio_stream < 1)) {
+	/* check interface, there must be a processing procedure */
+	if (!interface->init || !interface->process) {
 		comp_err(dev, "comp is missing mandatory interfaces");
 		return -EIO;
 	}
@@ -675,48 +674,6 @@ int module_prepare(struct processing_module *mod,
 	return 0;
 }
 
-int module_process_legacy(struct processing_module *mod,
-			  struct input_stream_buffer *input_buffers, int num_input_buffers,
-			  struct output_stream_buffer *output_buffers,
-			  int num_output_buffers)
-{
-	struct comp_dev *dev = mod->dev;
-	const struct module_interface *const ops = dev->drv->adapter_ops;
-	int ret;
-
-	comp_dbg(dev, "entry");
-
-#if CONFIG_IPC_MAJOR_3
-	struct module_data *md = &mod->priv;
-
-	if (md->state != MODULE_IDLE) {
-		comp_err(dev, "wrong state %d", md->state);
-		return -EPERM;
-	}
-
-	/* set state to processing */
-	md->state = MODULE_PROCESSING;
-#endif
-	if (IS_PROCESSING_MODE_AUDIO_STREAM(mod))
-		ret = ops->process_audio_stream(mod, input_buffers, num_input_buffers,
-							     output_buffers, num_output_buffers);
-	else
-		ret = -EOPNOTSUPP;
-
-	if (ret && ret != -ENOSPC && ret != -ENODATA) {
-		comp_err(dev, "error %d", ret);
-		return ret;
-	}
-
-	comp_dbg(dev, "done");
-
-#if CONFIG_IPC_MAJOR_3
-	/* reset state to idle */
-	md->state = MODULE_IDLE;
-#endif
-	return 0;
-}
-
 int module_process_sink_src(struct processing_module *mod,
 			    struct sof_source **sources, int num_of_sources,
 			    struct sof_sink **sinks, int num_of_sinks)
@@ -1050,18 +1007,6 @@ int module_unbind(struct processing_module *mod, const struct bind_info *unbind_
 	return ret;
 }
 
-void module_update_buffer_position(struct input_stream_buffer *input_buffers,
-				   struct output_stream_buffer *output_buffers,
-				   uint32_t frames)
-{
-	struct audio_stream *source = input_buffers->data;
-	struct audio_stream *sink = output_buffers->data;
-
-	input_buffers->consumed += audio_stream_frame_bytes(source) * frames;
-	output_buffers->size += audio_stream_frame_bytes(sink) * frames;
-}
-EXPORT_SYMBOL(module_update_buffer_position);
-
 uint32_t module_get_deadline(struct processing_module *mod)
 {
 	uint32_t deadline;

src/audio/module_adapter/module/modules.c

@@ -63,7 +63,6 @@ static int modules_init(struct processing_module *mod)
 	md->mpd.in_buff_size = src_cfg->ibs;
 	md->mpd.out_buff_size = src_cfg->obs;
 
-	mod->proc_type = MODULE_PROCESS_TYPE_SOURCE_SINK;
 	return iadk_wrapper_init(module_get_private_data(mod));
 }