diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index adb3fb923be3..f9e6a83e55c6 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -398,7 +398,7 @@ config SND_SOC_WM_HUBS
 	default m if SND_SOC_WM8993=m || SND_SOC_WM8994=m
 
 config SND_SOC_WM_ADSP
-	tristate
+	tristate "Cirrus Logic wm_adsp driver" if KUNIT
 	select FW_CS_DSP
 	select SND_SOC_COMPRESS
 	default y if SND_SOC_MADERA=y
@@ -424,6 +424,18 @@ config SND_SOC_WM_ADSP
 	default m if SND_SOC_CS35L56=m
 	default m if SND_SOC_CS48L32=m
 
+config SND_SOC_WM_ADSP_TEST
+	tristate "KUnit tests for Cirrus Logic wm_adsp" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	depends on SND_SOC_WM_ADSP
+	default KUNIT_ALL_TESTS
+	help
+	  This builds KUnit tests for the Cirrus Logic wm_adsp library.
+	  For more information on KUnit and unit tests in general,
+	  please refer to the KUnit documentation in
+	  Documentation/dev-tools/kunit/.
+	  If in doubt, say "N".
+
 config SND_SOC_AB8500_CODEC
 	tristate
 	depends on ABX500_CORE
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 3ddee5298721..172861d17cfd 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -361,6 +361,7 @@ snd-soc-wcd938x-sdw-y := wcd938x-sdw.o
 snd-soc-wcd939x-y := wcd939x.o
 snd-soc-wcd939x-sdw-y := wcd939x-sdw.o
 snd-soc-wm-adsp-y := wm_adsp.o
+snd-soc-wm-adsp-test-y := wm_adsp_fw_find_test.o
 snd-soc-wm0010-y := wm0010.o
 snd-soc-wm1250-ev1-y := wm1250-ev1.o
 snd-soc-wm2000-y := wm2000.o
@@ -862,6 +863,7 @@ obj-$(CONFIG_SND_SOC_WM9705)	+= snd-soc-wm9705.o
 obj-$(CONFIG_SND_SOC_WM9712)	+= snd-soc-wm9712.o
 obj-$(CONFIG_SND_SOC_WM9713)	+= snd-soc-wm9713.o
 obj-$(CONFIG_SND_SOC_WM_ADSP)	+= snd-soc-wm-adsp.o
+obj-$(CONFIG_SND_SOC_WM_ADSP_TEST)	+= snd-soc-wm-adsp-test.o
 obj-$(CONFIG_SND_SOC_WM_HUBS)	+= snd-soc-wm-hubs.o
 obj-$(CONFIG_SND_SOC_WSA881X)	+= snd-soc-wsa881x.o
 obj-$(CONFIG_SND_SOC_WSA883X)	+= snd-soc-wsa883x.o
diff --git a/sound/soc/codecs/wm_adsp_fw_find_test.c b/sound/soc/codecs/wm_adsp_fw_find_test.c
new file mode 100644
index 000000000000..556221d38a50
--- /dev/null
+++ b/sound/soc/codecs/wm_adsp_fw_find_test.c
@@ -0,0 +1,1223 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Test cases for wm_adsp library.
+//
+// Copyright (C) 2025 Cirrus Logic, Inc. and
+//                    Cirrus Logic International Semiconductor Ltd.
+
+#include <kunit/device.h>
+#include <kunit/static_stub.h>
+#include <kunit/test.h>
+#include <linux/slab.h>
+#include "wm_adsp.h"
+
+KUNIT_DEFINE_ACTION_WRAPPER(_put_device_wrapper, put_device, struct device *);
+
+struct wm_adsp_fw_find_test {
+	struct wm_adsp dsp;
+
+	const struct firmware *found_wmfw_firmware;
+	const struct firmware *found_bin_firmware;
+	char *found_wmfw_filename;
+	char *found_bin_filename;
+	char searched_fw_files[768];
+};
+
+struct wm_adsp_fw_find_test_params {
+	const char *part;
+	const char *dsp_name;
+	const char *fwf_name;
+	const char *system_name;
+	const char *alsa_name;
+	bool wmfw_optional;
+	bool bin_mandatory;
+
+	/* If non-NULL this file should be returned as "found" */
+	const char *expect_wmfw;
+
+	/* If non-NULL this file should be returned as "found" */
+	const char *expect_bin;
+
+	/* Space-separated list of filenames in expected order of searching */
+	const char *expected_searches;
+
+	/* NULL-terminated array of pointers to filenames to simulate directory content */
+	const char * const *dir_files;
+};
+
+/* Dummy struct firmware to return from wm_adsp_request_firmware_files */
+static const struct firmware wm_adsp_find_test_dummy_firmware;
+
+/* Simple lookup of a filename in a list of names */
+static int wm_adsp_fw_find_test_firmware_request_simple_stub(const struct firmware **firmware,
+							     const char *filename,
+							     struct device *dev)
+{
+	struct kunit *test = kunit_get_current_test();
+	const struct wm_adsp_fw_find_test_params *params = test->param_value;
+	int i;
+
+	/* Non-parameterized test? */
+	if (!params)
+		return -ENOENT;
+
+	if (!params->dir_files)
+		return -ENOENT;
+
+	for (i = 0; params->dir_files[i]; i++) {
+		if (strcmp(params->dir_files[i], filename) == 0) {
+			*firmware = &wm_adsp_find_test_dummy_firmware;
+			return 0;
+		}
+	}
+
+	return -ENOENT;
+}
+
+static void wm_adsp_fw_find_test_pick_file(struct kunit *test)
+{
+	struct wm_adsp_fw_find_test *priv = test->priv;
+	const struct wm_adsp_fw_find_test_params *params = test->param_value;
+	struct wm_adsp *dsp = &priv->dsp;
+	int i, ret;
+
+	/* Concatenate string of dir content for error messages */
+	for (i = 0; params->dir_files[i]; i++) {
+		strlcat(priv->searched_fw_files, params->dir_files[i],
+			sizeof(priv->searched_fw_files));
+		strlcat(priv->searched_fw_files, ";",
+			sizeof(priv->searched_fw_files));
+	}
+
+	dsp->cs_dsp.name = params->dsp_name;
+	dsp->part = params->part;
+	dsp->fwf_name = params->fwf_name;
+	dsp->system_name = params->system_name;
+	dsp->component->name_prefix = params->alsa_name;
+	dsp->wmfw_optional = params->wmfw_optional;
+	dsp->bin_mandatory = params->bin_mandatory;
+
+	kunit_activate_static_stub(test,
+				   wm_adsp_firmware_request,
+				   wm_adsp_fw_find_test_firmware_request_simple_stub);
+
+	ret = wm_adsp_request_firmware_files(dsp,
+					     &priv->found_wmfw_firmware,
+					     &priv->found_wmfw_filename,
+					     &priv->found_bin_firmware,
+					     &priv->found_bin_filename);
+	kunit_deactivate_static_stub(test, wm_adsp_firmware_request);
+	KUNIT_EXPECT_EQ_MSG(test, ret,
+			    (params->expect_wmfw || params->expect_bin) ? 0 : -ENOENT,
+			    "%s\n", priv->searched_fw_files);
+
+	KUNIT_EXPECT_EQ_MSG(test, !!priv->found_wmfw_filename, !!params->expect_wmfw,
+			    "%s\n", priv->searched_fw_files);
+	KUNIT_EXPECT_EQ_MSG(test, !!priv->found_bin_filename, !!params->expect_bin,
+			    "%s\n", priv->searched_fw_files);
+
+	if (params->expect_wmfw) {
+		KUNIT_EXPECT_STREQ_MSG(test, priv->found_wmfw_filename, params->expect_wmfw,
+				       "%s\n", priv->searched_fw_files);
+	}
+
+	if (params->expect_bin) {
+		KUNIT_EXPECT_STREQ_MSG(test, priv->found_bin_filename, params->expect_bin,
+				       "%s\n", priv->searched_fw_files);
+	}
+}
+
+static int wm_adsp_fw_find_test_firmware_request_stub(const struct firmware **firmware,
+						      const char *filename,
+						      struct device *dev)
+{
+	struct kunit *test = kunit_get_current_test();
+	const struct wm_adsp_fw_find_test_params *params = test->param_value;
+	struct wm_adsp_fw_find_test *priv = test->priv;
+
+	/*
+	 * Searches are accumulated as a single string of space-separated names.
+	 * The list of expected searches are stored the same way in
+	 * struct wm_adsp_fw_find_test_params. This allows for comparision using
+	 * a simple KUNIT_EXPECT_STREQ(), which avoids the risk of bugs in a
+	 * more complex custom comparison.
+	 */
+	if (priv->searched_fw_files[0] != '\0')
+		strlcat(priv->searched_fw_files, " ", sizeof(priv->searched_fw_files));
+
+	strlcat(priv->searched_fw_files, filename, sizeof(priv->searched_fw_files));
+
+	/* Non-parameterized test? */
+	if (!params)
+		return -ENOENT;
+
+	if (params->expect_wmfw && (strcmp(filename, params->expect_wmfw) == 0)) {
+		*firmware = &wm_adsp_find_test_dummy_firmware;
+		return 0;
+	}
+
+	if (params->expect_bin && (strcmp(filename, params->expect_bin) == 0)) {
+		*firmware = &wm_adsp_find_test_dummy_firmware;
+		return 0;
+	}
+
+	return -ENOENT;
+}
+
+static void wm_adsp_fw_find_test_search_order(struct kunit *test)
+{
+	struct wm_adsp_fw_find_test *priv = test->priv;
+	const struct wm_adsp_fw_find_test_params *params = test->param_value;
+	struct wm_adsp *dsp = &priv->dsp;
+
+	dsp->cs_dsp.name = params->dsp_name;
+	dsp->part = params->part;
+	dsp->fwf_name = params->fwf_name;
+	dsp->system_name = params->system_name;
+	dsp->component->name_prefix = params->alsa_name;
+	dsp->wmfw_optional = params->wmfw_optional;
+
+	kunit_activate_static_stub(test,
+				   wm_adsp_firmware_request,
+				   wm_adsp_fw_find_test_firmware_request_stub);
+
+	wm_adsp_request_firmware_files(dsp,
+				       &priv->found_wmfw_firmware,
+				       &priv->found_wmfw_filename,
+				       &priv->found_bin_firmware,
+				       &priv->found_bin_filename);
+
+	kunit_deactivate_static_stub(test, wm_adsp_firmware_request);
+
+	KUNIT_EXPECT_STREQ(test, priv->searched_fw_files, params->expected_searches);
+
+	KUNIT_EXPECT_EQ(test, !!priv->found_wmfw_filename, !!params->expect_wmfw);
+	if (params->expect_wmfw)
+		KUNIT_EXPECT_STREQ(test, priv->found_wmfw_filename, params->expect_wmfw);
+
+	KUNIT_EXPECT_EQ(test, !!priv->found_bin_filename, !!params->expect_bin);
+	if (params->expect_bin)
+		KUNIT_EXPECT_STREQ(test, priv->found_bin_filename, params->expect_bin);
+
+	/* Either we get a filename and firmware, or neither */
+	KUNIT_EXPECT_EQ(test, !!priv->found_wmfw_filename, !!priv->found_wmfw_firmware);
+	KUNIT_EXPECT_EQ(test, !!priv->found_bin_filename, !!priv->found_bin_firmware);
+}
+
+static void wm_adsp_fw_find_test_find_firmware_byindex(struct kunit *test)
+{
+	struct wm_adsp_fw_find_test *priv = test->priv;
+	struct wm_adsp *dsp = &priv->dsp;
+	const char *fw_name;
+
+	dsp->cs_dsp.name = "cs1234";
+	dsp->part = "dsp1";
+	for (dsp->fw = 0;; dsp->fw++) {
+		fw_name = wm_adsp_get_fwf_name_by_index(dsp->fw);
+		if (!fw_name)
+			break;
+
+		kunit_activate_static_stub(test,
+					   wm_adsp_firmware_request,
+					   wm_adsp_fw_find_test_firmware_request_stub);
+
+		wm_adsp_request_firmware_files(dsp,
+					       &priv->found_wmfw_firmware,
+					       &priv->found_wmfw_filename,
+					       &priv->found_bin_firmware,
+					       &priv->found_bin_filename);
+
+		kunit_deactivate_static_stub(test, wm_adsp_firmware_request);
+
+		KUNIT_EXPECT_NOT_NULL_MSG(test,
+					  strstr(priv->searched_fw_files, fw_name),
+					  "fw#%d Did not find '%s' in '%s'\n",
+					  dsp->fw, fw_name, priv->searched_fw_files);
+	}
+}
+
+static int wm_adsp_fw_find_test_case_init(struct kunit *test)
+{
+	struct wm_adsp_fw_find_test *priv;
+	struct device *test_dev;
+	int ret;
+
+	priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	/* Require dummy struct snd_soc_component for the alsa name prefix string */
+	priv->dsp.component = kunit_kzalloc(test, sizeof(*priv->dsp.component), GFP_KERNEL);
+	if (!priv->dsp.component)
+		return -ENOMEM;
+
+	test->priv = priv;
+
+	/* Create dummy amp device */
+	test_dev = kunit_device_register(test, "wm_adsp_test_drv");
+	if (IS_ERR(test_dev))
+		return PTR_ERR(test_dev);
+
+	priv->dsp.cs_dsp.dev = get_device(test_dev);
+	if (!priv->dsp.cs_dsp.dev)
+		return -ENODEV;
+
+	ret = kunit_add_action_or_reset(test, _put_device_wrapper, priv->dsp.cs_dsp.dev);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void wm_adsp_fw_find_test_case_exit(struct kunit *test)
+{
+	struct wm_adsp_fw_find_test *priv = test->priv;
+
+	/*
+	 * priv->found_wmfw_firmware and priv->found_bin_firmware are
+	 * dummies not allocated by the real request_firmware() call they
+	 * must not be passed to release_firmware().
+	 */
+	wm_adsp_release_firmware_files(NULL, priv->found_wmfw_filename,
+				       NULL, priv->found_bin_filename);
+}
+
+static void wm_adsp_fw_find_test_param_desc(const struct wm_adsp_fw_find_test_params *param,
+					    char *desc)
+{
+	snprintf(desc, KUNIT_PARAM_DESC_SIZE,
+		 "%s %s fwf_name:%s system:%s alsa_name:%s %s expects:(%s %s)",
+		  param->part, param->dsp_name,
+		  param->fwf_name ? param->fwf_name : "",
+		  param->system_name ? param->system_name : "",
+		  param->alsa_name ? param->alsa_name : "",
+		  param->wmfw_optional ? "wmfw_optional" : "",
+		  param->expect_wmfw ? param->expect_wmfw : "",
+		  param->expect_bin ? param->expect_bin : "");
+}
+
+/* Cases where firmware file not found. Tests full search sequence. */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_full_search_cases[] = {
+	{ /* system name and alsa prefix, wmfw mandatory. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw",
+	},
+	{ /* system name and alsa prefix, wmfw optional. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* system name only, wmfw mandatory. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw",
+	},
+	{ /* system name only, wmfw optional. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+
+	/*
+	 * TODO: Is this a bug? Device-specific bin is only allowed when there
+	 * is a system_name. But if there isn't any meaningful system name on
+	 * a product, why can't it load firmware files qualified by alsa prefix?
+	 */
+
+	{ /* Alsa prefix, wmfw mandatory. No system name so generic files only. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw",
+	},
+	{ /* Alsa prefix, wmfw optional. No system name so generic files only. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+
+	{ /* fwf_name, system name and alsa prefix, wmfw mandatory. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .fwf_name = "ao",
+		.expected_searches =
+			"cirrus/cs1234-ao-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-ao-mbc-vss-abc123.wmfw "
+			"cs1234-ao-mbc-vss.wmfw "
+			"cirrus/cs1234-ao-mbc-vss.wmfw",
+	},
+	{ /* fwf_name, system name and alsa prefix, wmfw optional. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .fwf_name = "ao",
+		.wmfw_optional = true,
+		.expected_searches =
+			"cirrus/cs1234-ao-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-ao-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-ao-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-ao-mbc-vss-abc123.bin "
+			"cs1234-ao-mbc-vss.wmfw "
+			"cirrus/cs1234-ao-mbc-vss.wmfw "
+			"cirrus/cs1234-ao-mbc-vss.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_full_search,
+		  wm_adsp_fw_find_full_search_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/* Cases with system name and alsa prefix both given. */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_system_alsaname_cases[] = {
+	{ /* Fully-qualified wmfw exists. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* Optional fully-qualified wmfw exists. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* Fully-qualified wmfw and bin exist. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* Optional fully-qualified wmfw and fully-qualified bin exist. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* wmfw matches system name only. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional wmfw matches system name only. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* wmfw matches system name only. Fully-qualified bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* Optional wmfw matches system name only. Fully-qualified bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* wmfw and bin match system name only. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional wmfw and bin match system name only. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional wmfw not found. bin matches fully-qualified name. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin",
+	},
+	{ /* Optional wmfw not found. bin matches system name only. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* No qualified wmfw. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified optional wmfw. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified wmfw. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified optional wmfw. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified or legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified or legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or generic wmfw. Generic bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123-amp1.bin "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_system_alsaname,
+		  wm_adsp_fw_find_system_alsaname_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/* Cases with system name but without alsa name prefix. */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_system_cases[] = {
+	{ /* Qualified wmfw found. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional qualified wmfw found. No bin */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Qualified wmfw found. Qualified bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional qualified wmfw found. Qualified bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* Optional wmfw not found. Qualified bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin",
+	},
+	{ /* No qualified wmfw. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified optional wmfw. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified wmfw. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified optional wmfw. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified or legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No qualified or legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No optional qualified or generic wmfw. Generic bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "ABC123",
+		.wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc123.bin "
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_system,
+		  wm_adsp_fw_find_system_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/* Cases without system name but with alsa name prefix. */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_alsaname_cases[] = {
+	{ /* Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* wmfw optional. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* wmfw optional. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Optional generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Optional generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy or generic wmfw. Generic bin found. */
+		.part = "cs1234", .dsp_name = "dsp1", .alsa_name = "amp1",
+		.wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_alsaname,
+		  wm_adsp_fw_find_alsaname_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/* Cases without system name or alsa name prefix. */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_noqual_cases[] = {
+	{ /* Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* wmfw optional. Legacy generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* wmfw optional. Legacy generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Optional generic wmfw found. No bin. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy wmfw. Optional generic wmfw and bin found. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.wmfw_optional = true,
+		.expect_wmfw =  "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+	{ /* No legacy or generic wmfw. Generic bin found. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.wmfw_optional = true,
+		.expect_bin =  "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.expected_searches =
+			"cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_noqual,
+		  wm_adsp_fw_find_noqual_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/*
+ * Tests for filename normalization. The system name and alsa prefix strings
+ * should be converted to lower-case and delimiters are converted to '-', except
+ * for '.' which is preserved.
+ */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_normalization_cases[] = {
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "Vendor",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-vendor.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-vendor.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-vendor.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "Vendor Device",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-vendor-device.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-vendor-device.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-vendor-device.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "Vendor_Device",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-vendor-device.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-vendor-device.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-vendor-device.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "1234:56AB",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-1234-56ab.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-1234-56ab.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-1234-56ab.bin",
+	},
+
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "abc",
+		.alsa_name = "LEFT",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc-left.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "abc",
+		.alsa_name = "LEFT AMP",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "abc",
+		.alsa_name = "Left Amp",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc-left-amp.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "abc",
+		.alsa_name = "Amp_1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc-amp-1.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc-amp-1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc-amp-1.bin",
+	},
+	{
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "abc",
+		.alsa_name = "cs1234.1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-abc-cs1234.1.wmfw",
+		.expected_searches =
+			"cirrus/cs1234-dsp1-mbc-vss-abc-cs1234.1.wmfw "
+			"cirrus/cs1234-dsp1-mbc-vss-abc-cs1234.1.bin",
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_normalization,
+		  wm_adsp_fw_find_normalization_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+/*
+ * Dummy directory content for regression tests.
+ * DSP part name and system name are used to select different available
+ * files.
+ *
+ * System:
+ * WFBF1111 = wmfw and bin fully-qualified
+ * WSBF1111 = wmfw system-qualified, bin fully-qualified
+ * WSBS1111 = wmfw and bin system-qualified
+ * WFXX1111 = wmfw fully-qualified, bin not present
+ * XXBF1111 = wmfw not present, bin fully-qualified
+ *
+ * Part:
+ * cs1234	= for testing fully-qualified configurations
+ * cs1234nobin	= generic wmfw without a bin available
+ * wm1234	= legacy wmfw and bin
+ * wm1234nobin	= legacy wmfw without bin
+ */
+static const char * const wm_adsp_fw_find_test_dir_all_files[] = {
+	"cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wfbf1111-l1u2.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wfbf1111.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wsbf1111.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wsbs1111.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wfxx1111.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss.wmfw",
+	"cirrus/cs1234nobin-dsp1-mbc-vss.wmfw",
+	"cirrus/wm1234-dsp1-mbc-vss.wmfw",
+	"cirrus/wm1234nobin-dsp1-mbc-vss.wmfw",
+	"wm1234-dsp1-mbc-vss.wmfw",
+	"wm1234nobin-dsp1-mbc-vss.wmfw",
+	"cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.bin",
+	"cirrus/cs1234-dsp1-mbc-vss-wfbf1111-l1u2.bin",
+	"cirrus/cs1234-dsp1-mbc-vss-wsbf1111-amp1.bin",
+	"cirrus/cs1234-dsp1-mbc-vss-wsbf1111-l1u2.bin",
+	"cirrus/cs1234-dsp1-mbc-vss-wsbs1111.bin",
+	"cirrus/cs1234-dsp1-mbc-vss-xxbf1111-amp1.bin",
+	"cirrus/cs1234-dsp1-mbc-vss.bin",
+	"cirrus/wm1234-dsp1-mbc-vss.bin",
+	"wm1234-dsp1-mbc-vss.bin",
+};
+
+/*
+ * Regression testing that a change in the search algorithm doesn't change
+ * which file is picked. This doesn't cover every possible combination, only
+ * those that are already in use and typical cases.
+ *
+ * It wouldn't be efficent to fully prove the algorithm this way (too many
+ * directory content combinations would be needed, and it only infers what the
+ * algorithm searched for, it doesn't prove exactly what searches were made).
+ * So the main testing is done by checking for the expected file searches.
+ * This regression test is independent of the search algorithm.
+ *
+ * The main tests already prove that the algorithm only searches for files
+ * with the correct qualifiers so we can assume that files with the wrong
+ * qualifiers would not be picked and there's no need to test for that here.
+ */
+static const struct wm_adsp_fw_find_test_params wm_adsp_fw_find_pick_cases[] = {
+	/*
+	 * Amps
+	 */
+	{ /* Full info, wmfw and bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFBF1111",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFBF1111",
+		.alsa_name = "l1u2",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-l1u2.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-l1u2.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw only system-qualified, bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WSBF1111",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw only system-qualified, bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WSBF1111",
+		.alsa_name = "l1u2",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111-l1u2.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw optional but present, and bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFBF1111",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin only system-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WSBS1111",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wsbs1111.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wsbs1111.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw optional but system-qualified wmfm present, bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WSBF1111",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wsbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw optional not present, and bin fully-qualified */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "XXBF1111",
+		.alsa_name = "amp1", .wmfw_optional = true,
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-xxbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin fully-qualified, bin mandatory and present */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFBF1111",
+		.alsa_name = "amp1", .bin_mandatory = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss-wfbf1111-amp1.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin fully-qualified, bin mandatory but not present */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFXX1111",
+		.alsa_name = "amp1", .bin_mandatory = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfxx1111.wmfw",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw optional but present, bin mandatory but not present */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "WFXX1111",
+		.alsa_name = "amp1", .wmfw_optional = true, .bin_mandatory = true,
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss-wfxx1111.wmfw",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin not present, generic fallbacks are present */
+		.part = "cs1234", .dsp_name = "dsp1", .system_name = "XXXX1111",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* Full info, wmfw and bin not present, generic wmfw present */
+		.part = "cs1234nobin", .dsp_name = "dsp1", .system_name = "XXXX1111",
+		.alsa_name = "amp1",
+		.expect_wmfw = "cirrus/cs1234nobin-dsp1-mbc-vss.wmfw",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+
+	/*
+	 * Codecs
+	 */
+	{ /* No qualifiers. Generic wmfws exist, legacy should be chosen. */
+		.part = "wm1234nobin", .dsp_name = "dsp1",
+		.expect_wmfw = "wm1234nobin-dsp1-mbc-vss.wmfw",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* No qualifiers. Generic wmfw and bin exist, legacy should be chosen */
+		.part = "wm1234", .dsp_name = "dsp1",
+		.expect_wmfw = "wm1234-dsp1-mbc-vss.wmfw",
+		.expect_bin = "wm1234-dsp1-mbc-vss.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* No qualifiers. New generic wmfw exists, no legacy files. */
+		.part = "cs1234nobin", .dsp_name = "dsp1",
+		.expect_wmfw = "cirrus/cs1234nobin-dsp1-mbc-vss.wmfw",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+	{ /* No qualifiers. New generic wmfw and bin exist, no legacy files. */
+		.part = "cs1234", .dsp_name = "dsp1",
+		.expect_wmfw = "cirrus/cs1234-dsp1-mbc-vss.wmfw",
+		.expect_bin = "cirrus/cs1234-dsp1-mbc-vss.bin",
+		.dir_files = wm_adsp_fw_find_test_dir_all_files,
+	},
+};
+KUNIT_ARRAY_PARAM(wm_adsp_fw_find_pick,
+		  wm_adsp_fw_find_pick_cases,
+		  wm_adsp_fw_find_test_param_desc);
+
+static struct kunit_case wm_adsp_fw_find_test_cases[] = {
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_full_search_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_system_alsaname_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_system_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_alsaname_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_noqual_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_search_order,
+			 wm_adsp_fw_find_normalization_gen_params),
+
+	KUNIT_CASE_PARAM(wm_adsp_fw_find_test_pick_file,
+			 wm_adsp_fw_find_pick_gen_params),
+
+	KUNIT_CASE(wm_adsp_fw_find_test_find_firmware_byindex),
+
+	{ } /* terminator */
+};
+
+static struct kunit_suite wm_adsp_fw_find_test_suite = {
+	.name = "wm-adsp-fw-find",
+	.init = wm_adsp_fw_find_test_case_init,
+	.exit = wm_adsp_fw_find_test_case_exit,
+	.test_cases = wm_adsp_fw_find_test_cases,
+};
+
+kunit_test_suite(wm_adsp_fw_find_test_suite);
+
+MODULE_DESCRIPTION("KUnit test for Cirrus Logic wm_adsp driver");
+MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");