src: convert to a loadable module

Build src as a loadable llext module.

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

Author: lyakh

app/boards/intel_adsp_ace15_mtpm.conf

@@ -2,7 +2,6 @@ CONFIG_METEORLAKE=y
 CONFIG_IPC_MAJOR_4=y
 CONFIG_IPC4_BASE_FW_INTEL=y
 
-CONFIG_COMP_SRC=y
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
 CONFIG_COMP_SRC_LITE=y
 CONFIG_COMP_DRC=m

app/boards/intel_adsp_ace20_lnl.conf

@@ -2,7 +2,6 @@ CONFIG_LUNARLAKE=y
 CONFIG_IPC_MAJOR_4=y
 CONFIG_IPC4_BASE_FW_INTEL=y
 
-CONFIG_COMP_SRC=y
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
 CONFIG_COMP_DRC=m
 

app/configs/lnl/modules.conf

@@ -1,4 +1,5 @@
+CONFIG_SAMPLE_SMART_AMP=m
 CONFIG_COMP_MIXIN_MIXOUT=m
 CONFIG_COMP_IIR=m
-CONFIG_SAMPLE_SMART_AMP=m
 CONFIG_COMP_DRC=m
+CONFIG_COMP_SRC=m

app/configs/mtl/modules.conf

@@ -2,3 +2,4 @@ CONFIG_SAMPLE_SMART_AMP=m
 CONFIG_COMP_MIXIN_MIXOUT=m
 CONFIG_COMP_IIR=m
 CONFIG_COMP_DRC=m
+CONFIG_COMP_SRC=m

src/audio/src/Kconfig

@@ -2,6 +2,7 @@
 
 config COMP_SRC
 	tristate "SRC component"
+	default m if LIBRARY_DEFAULT_MODULAR
 	default y
 	help
 	  Select for SRC component

src/audio/src/llext/CMakeLists.txt

@@ -0,0 +1,25 @@
+# Copyright (c) 2024 Intel Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+if(CONFIG_COMP_SRC_LITE)
+sof_llext_build("src"
+	SOURCES ../src_hifi2ep.c
+		../src_generic.c
+		../src_hifi3.c
+		../src_hifi4.c
+		../src.c
+		../src_common.c
+		../src_ipc4.c
+		../src_lite.c
+)
+else()
+sof_llext_build("src"
+	SOURCES ../src_hifi2ep.c
+		../src_generic.c
+		../src_hifi3.c
+		../src_hifi4.c
+		../src.c
+		../src_common.c
+		../src_ipc4.c
+)
+endif()

src/audio/src/llext/llext.toml.h

@@ -0,0 +1,6 @@
+#include <tools/rimage/config/platform.toml>
+#define LOAD_TYPE "2"
+#include "../src.toml"
+
+[module]
+count = __COUNTER__

src/audio/src/src.c

@@ -81,3 +81,31 @@ static const struct module_interface src_interface = {
 
 DECLARE_MODULE_ADAPTER(src_interface, SRC_UUID, src_tr);
 SOF_MODULE_INIT(src, sys_comp_module_src_interface_init);
+
+#if CONFIG_COMP_SRC_MODULE
+/* modular: llext dynamic link */
+
+#include <module/module/api_ver.h>
+#include <module/module/llext.h>
+#include <rimage/sof/user/manifest.h>
+
+#define UUID_SRC 0x8D, 0xB2, 0x1B, 0xE6, 0x9A, 0x14, 0x1F, 0x4C, \
+		 0xB7, 0x09, 0x46, 0x82, 0x3E, 0xF5, 0xF5, 0xAE
+SOF_LLEXT_MOD_ENTRY(src, &src_interface);
+
+#if CONFIG_COMP_SRC_LITE
+#define UUID_SRC_LITE 0x51, 0x10, 0x44, 0x33, 0xCD, 0x44, 0x6A, 0x46, \
+		      0x83, 0xA3, 0x17, 0x84, 0x78, 0x70, 0x8A, 0xEA
+extern const struct module_interface src_lite_interface;
+SOF_LLEXT_MOD_ENTRY(src_lite, &src_lite_interface);
+#endif
+
+static const struct sof_man_module_manifest mod_manifest[] __section(".module") __used = {
+	SOF_LLEXT_MODULE_MANIFEST("SRC", src_llext_entry, 1, UUID_SRC, 1),
+#if CONFIG_COMP_SRC_LITE
+	SOF_LLEXT_MODULE_MANIFEST("SRC_LITE", src_lite_llext_entry, 1, UUID_SRC_LITE, 1),
+#endif
+};
+
+SOF_LLEXT_BUILDINFO;
+#endif

src/audio/src/src.toml

@@ -1,10 +1,14 @@
+#ifndef LOAD_TYPE
+#define LOAD_TYPE "0"
+#endif
+
 	[[module.entry]]
 	name = "SRC"
 	uuid = "E61BB28D-149A-4C1F-B709-46823EF5F5AE"
 	affinity_mask = "0x1"
 	REM #instance_count = "10"
 	domain_types = "0"
-	load_type = "0"
+	load_type = LOAD_TYPE
 	module_type = "7"
 	auto_start = "0"
 	sched_caps = [1, 0x00008000]
@@ -77,7 +81,7 @@
 	affinity_mask = "0x1"
 	REM #instance_count = "10"
 	domain_types = "0"
-	load_type = "0"
+	load_type = LOAD_TYPE
 	module_type = "0x1F"
 	auto_start = "0"
 	sched_caps = [1, 0x00008000]

src/audio/src/src_lite.c

@@ -53,7 +53,7 @@ static int src_lite_prepare(struct processing_module *mod,
 	return src_prepare_general(mod, sources[0], sinks[0]);
 }
 
-static const struct module_interface src_lite_interface = {
+const struct module_interface src_lite_interface = {
 	.init = src_init,
 	.prepare = src_lite_prepare,
 	.process = src_process,