smart-amp: [WiP] extend to be usable as a loadable module

Add a manifest and a "main()" entry point to IPC4 smart-amp-test to
adapt it for dynamic loading. Note, that at the moment we need a
trick to force .bss from being optimised out. This has to be solved
in a better way.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

src/samples/audio/smart_amp_test_ipc4.c

@@ -39,6 +39,8 @@ struct smart_amp_data {
 	uint32_t out_channels;
 };
 
+static int keep_bss;
+
 static int smart_amp_init(struct processing_module *mod)
 {
 	struct smart_amp_data *sad;
@@ -49,7 +51,11 @@ static int smart_amp_init(struct processing_module *mod)
 	int ret;
 	const struct ipc4_base_module_extended_cfg *base_cfg = mod_data->cfg.init_data;
 
-	comp_dbg(dev, "smart_amp_init()");
+	if (!base_cfg) {
+		comp_err(dev, "smart_amp_init(): no rzalloc %d", ++keep_bss);
+		return -EINVAL;
+	}
+
 	sad = rzalloc(SOF_MEM_ZONE_RUNTIME, 0, SOF_MEM_CAPS_RAM, sizeof(*sad));
 	if (!sad)
 		return -ENOMEM;
@@ -65,7 +71,9 @@ static int smart_amp_init(struct processing_module *mod)
 
 	if (base_cfg->base_cfg_ext.nb_input_pins != SMART_AMP_NUM_IN_PINS ||
 	    base_cfg->base_cfg_ext.nb_output_pins != SMART_AMP_NUM_OUT_PINS) {
-		comp_err(dev, "smart_amp_init(): Invalid pin configuration");
+		comp_err(dev, "smart_amp_init(): Invalid pin configuration: %d %d %d",
+			 base_cfg->base_cfg_ext.nb_input_pins,
+			 base_cfg->base_cfg_ext.nb_output_pins, ++keep_bss);
 		ret = -EINVAL;
 		goto sad_fail;
 	}
@@ -118,7 +126,7 @@ static int smart_amp_set_config(struct processing_module *mod, uint32_t config_i
 	struct comp_dev *dev = mod->dev;
 	struct smart_amp_data *sad = module_get_private_data(mod);
 
-	comp_dbg(dev, "smart_amp_set_config()");
+	comp_dbg(dev, "smart_amp_set_config(): %u", config_id);
 
 	switch (config_id) {
 	case SMART_AMP_SET_MODEL:
@@ -182,7 +190,9 @@ static int smart_amp_params(struct processing_module *mod)
 
 	comp_dbg(dev, "smart_amp_params()");
 	smart_amp_set_params(mod);
+
 	ret = comp_verify_params(dev, BUFF_PARAMS_CHANNELS, params);
+	comp_dbg(dev, "smart_amp_params(): %d", ret);
 	if (ret < 0) {
 		comp_err(dev, "smart_amp_params(): pcm params verification failed.");
 		return -EINVAL;
@@ -366,6 +376,7 @@ static int smart_amp_prepare(struct processing_module *mod,
 		source_buffer = container_of(blist, struct comp_buffer,
 					     sink_list);
 		buffer_c = buffer_acquire(source_buffer);
+		comp_dbg(dev, "smart_amp_prepare() init source %p", source_buffer);
 		audio_stream_init_alignment_constants(1, 1, &buffer_c->stream);
 		if (IPC4_SINK_QUEUE_ID(buffer_c->id) == SOF_SMART_AMP_FEEDBACK_QUEUE_ID) {
 			audio_stream_set_channels(&buffer_c->stream, sad->config.feedback_channels);
@@ -377,6 +388,7 @@ static int smart_amp_prepare(struct processing_module *mod,
 
 	sink_buffer = list_first_item(&dev->bsink_list, struct comp_buffer, source_list);
 	buffer_c = buffer_acquire(sink_buffer);
+	comp_dbg(dev, "smart_amp_prepare() init sink %p", sink_buffer);
 	sad->out_channels = audio_stream_get_channels(&buffer_c->stream);
 	audio_stream_init_alignment_constants(1, 1, &buffer_c->stream);
 	sad->process = get_smart_amp_process(dev, buffer_c);