diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index d7b090224f1b..a87522ea4301 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -13,6 +13,7 @@
 #include <sound/soc.h>
 #include <sound/sof.h>
 #include "sof-priv.h"
+#include "sof-of-dev.h"
 #include "ops.h"
 
 #define CREATE_TRACE_POINTS
@@ -143,6 +144,66 @@ void sof_set_fw_state(struct snd_sof_dev *sdev, enum sof_fw_state new_state)
 }
 EXPORT_SYMBOL(sof_set_fw_state);
 
+/* SOF Driver enumeration */
+static int sof_machine_check(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_pdata *sof_pdata = sdev->pdata;
+	const struct sof_dev_desc *desc = sof_pdata->desc;
+	struct snd_soc_acpi_mach *mach;
+
+	if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) {
+		const struct snd_sof_of_mach *of_mach;
+
+		if (IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC_DEBUG_SUPPORT) &&
+		    sof_debug_check_flag(SOF_DBG_FORCE_NOCODEC))
+			goto nocodec;
+
+		/* find machine */
+		mach = snd_sof_machine_select(sdev);
+		if (mach) {
+			sof_pdata->machine = mach;
+
+			if (sof_pdata->subsystem_id_set) {
+				mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor;
+				mach->mach_params.subsystem_device = sof_pdata->subsystem_device;
+				mach->mach_params.subsystem_id_set = true;
+			}
+
+			snd_sof_set_mach_params(mach, sdev);
+			return 0;
+		}
+
+		of_mach = sof_of_machine_select(sdev);
+		if (of_mach) {
+			sof_pdata->of_machine = of_mach;
+			return 0;
+		}
+
+		if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) {
+			dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n");
+			return -ENODEV;
+		}
+	} else {
+		dev_warn(sdev->dev, "Force to use nocodec mode\n");
+	}
+
+nocodec:
+	/* select nocodec mode */
+	dev_warn(sdev->dev, "Using nocodec machine driver\n");
+	mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL);
+	if (!mach)
+		return -ENOMEM;
+
+	mach->drv_name = "sof-nocodec";
+	if (!sof_pdata->tplg_filename)
+		sof_pdata->tplg_filename = desc->nocodec_tplg_filename;
+
+	sof_pdata->machine = mach;
+	snd_sof_set_mach_params(mach, sdev);
+
+	return 0;
+}
+
 /*
  *			FW Boot State Transition Diagram
  *
@@ -527,6 +588,40 @@ int snd_sof_device_shutdown(struct device *dev)
 }
 EXPORT_SYMBOL(snd_sof_device_shutdown);
 
+/* Machine driver registering and unregistering */
+int sof_machine_register(struct snd_sof_dev *sdev, void *pdata)
+{
+	struct snd_sof_pdata *plat_data = pdata;
+	const char *drv_name;
+	const void *mach;
+	int size;
+
+	drv_name = plat_data->machine->drv_name;
+	mach = plat_data->machine;
+	size = sizeof(*plat_data->machine);
+
+	/* register machine driver, pass machine info as pdata */
+	plat_data->pdev_mach =
+		platform_device_register_data(sdev->dev, drv_name,
+					      PLATFORM_DEVID_NONE, mach, size);
+	if (IS_ERR(plat_data->pdev_mach))
+		return PTR_ERR(plat_data->pdev_mach);
+
+	dev_dbg(sdev->dev, "created machine %s\n",
+		dev_name(&plat_data->pdev_mach->dev));
+
+	return 0;
+}
+EXPORT_SYMBOL(sof_machine_register);
+
+void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata)
+{
+	struct snd_sof_pdata *plat_data = pdata;
+
+	platform_device_unregister(plat_data->pdev_mach);
+}
+EXPORT_SYMBOL(sof_machine_unregister);
+
 MODULE_AUTHOR("Liam Girdwood");
 MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core");
 MODULE_LICENSE("Dual BSD/GPL");
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index 4972a66c6007..9163975c9c3f 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -11,7 +11,6 @@
 #include <linux/bitfield.h>
 #include <trace/events/sof.h>
 #include "sof-audio.h"
-#include "sof-of-dev.h"
 #include "ops.h"
 
 static bool is_virtual_widget(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
@@ -1006,100 +1005,3 @@ int sof_dai_get_bclk(struct snd_soc_pcm_runtime *rtd)
 	return sof_dai_get_clk(rtd, SOF_DAI_CLK_INTEL_SSP_BCLK);
 }
 EXPORT_SYMBOL(sof_dai_get_bclk);
-
-/*
- * SOF Driver enumeration.
- */
-int sof_machine_check(struct snd_sof_dev *sdev)
-{
-	struct snd_sof_pdata *sof_pdata = sdev->pdata;
-	const struct sof_dev_desc *desc = sof_pdata->desc;
-	struct snd_soc_acpi_mach *mach;
-
-	if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) {
-		const struct snd_sof_of_mach *of_mach;
-
-		if (IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC_DEBUG_SUPPORT) &&
-		    sof_debug_check_flag(SOF_DBG_FORCE_NOCODEC))
-			goto nocodec;
-
-		/* find machine */
-		mach = snd_sof_machine_select(sdev);
-		if (mach) {
-			sof_pdata->machine = mach;
-
-			if (sof_pdata->subsystem_id_set) {
-				mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor;
-				mach->mach_params.subsystem_device = sof_pdata->subsystem_device;
-				mach->mach_params.subsystem_id_set = true;
-			}
-
-			snd_sof_set_mach_params(mach, sdev);
-			return 0;
-		}
-
-		of_mach = sof_of_machine_select(sdev);
-		if (of_mach) {
-			sof_pdata->of_machine = of_mach;
-			return 0;
-		}
-
-		if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) {
-			dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n");
-			return -ENODEV;
-		}
-	} else {
-		dev_warn(sdev->dev, "Force to use nocodec mode\n");
-	}
-
-nocodec:
-	/* select nocodec mode */
-	dev_warn(sdev->dev, "Using nocodec machine driver\n");
-	mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL);
-	if (!mach)
-		return -ENOMEM;
-
-	mach->drv_name = "sof-nocodec";
-	if (!sof_pdata->tplg_filename)
-		sof_pdata->tplg_filename = desc->nocodec_tplg_filename;
-
-	sof_pdata->machine = mach;
-	snd_sof_set_mach_params(mach, sdev);
-
-	return 0;
-}
-EXPORT_SYMBOL(sof_machine_check);
-
-int sof_machine_register(struct snd_sof_dev *sdev, void *pdata)
-{
-	struct snd_sof_pdata *plat_data = pdata;
-	const char *drv_name;
-	const void *mach;
-	int size;
-
-	drv_name = plat_data->machine->drv_name;
-	mach = plat_data->machine;
-	size = sizeof(*plat_data->machine);
-
-	/* register machine driver, pass machine info as pdata */
-	plat_data->pdev_mach =
-		platform_device_register_data(sdev->dev, drv_name,
-					      PLATFORM_DEVID_NONE, mach, size);
-	if (IS_ERR(plat_data->pdev_mach))
-		return PTR_ERR(plat_data->pdev_mach);
-
-	dev_dbg(sdev->dev, "created machine %s\n",
-		dev_name(&plat_data->pdev_mach->dev));
-
-	return 0;
-}
-EXPORT_SYMBOL(sof_machine_register);
-
-void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata)
-{
-	struct snd_sof_pdata *plat_data = pdata;
-
-	if (!IS_ERR_OR_NULL(plat_data->pdev_mach))
-		platform_device_unregister(plat_data->pdev_mach);
-}
-EXPORT_SYMBOL(sof_machine_unregister);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index f4185012eb69..faa8a19ed737 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -814,8 +814,6 @@ int sof_stream_pcm_open(struct snd_sof_dev *sdev,
 int sof_stream_pcm_close(struct snd_sof_dev *sdev,
 			 struct snd_pcm_substream *substream);
 
-int sof_machine_check(struct snd_sof_dev *sdev);
-
 /* SOF client support */
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_CLIENT)
 int sof_client_dev_register(struct snd_sof_dev *sdev, const char *name, u32 id,
