diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index b5b981c1bb0d..10606266b30c 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -8,6 +8,8 @@
  * Copyright (C) 2007 MontaVista Software Inc.
  * Copyright (C) 2009 Provigent Ltd.
  */
+#ifndef __I2C_DESIGNWARE_CORE_H__
+#define __I2C_DESIGNWARE_CORE_H__
 
 #include <linux/i2c.h>
 #include <linux/regmap.h>
@@ -324,3 +326,5 @@ extern int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev);
 #else
 static inline int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev) { return 0; }
 #endif
+
+#endif /* __I2C_DESIGNWARE_CORE_H__ */
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 5536673060cc..274953155569 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -32,6 +32,7 @@
 #include <linux/suspend.h>
 
 #include "i2c-designware-core.h"
+#include "i2c-designware-platdrv.h"
 
 static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
 {
@@ -80,9 +81,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
 	kfree(buf.pointer);
 }
 
-static int dw_i2c_acpi_configure(struct platform_device *pdev)
+static int dw_i2c_acpi_configure(struct dw_i2c_dev *dev)
 {
-	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+	struct platform_device *pdev = to_platform_device(dev->dev);
 	struct i2c_timings *t = &dev->timings;
 	u32 ss_ht = 0, fp_ht = 0, hs_ht = 0, fs_ht = 0;
 
@@ -135,7 +136,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);
 #else
-static inline int dw_i2c_acpi_configure(struct platform_device *pdev)
+static inline int dw_i2c_acpi_configure(struct dw_i2c_dev *dev)
 {
 	return -ENODEV;
 }
@@ -154,9 +155,9 @@ static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev)
 	return 0;
 }
 
-static int dw_i2c_of_configure(struct platform_device *pdev)
+static int dw_i2c_of_configure(struct dw_i2c_dev *dev)
 {
-	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+	struct platform_device *pdev = to_platform_device(dev->dev);
 	struct resource *mem;
 
 	switch (dev->flags & MODEL_MASK) {
@@ -180,7 +181,7 @@ static const struct of_device_id dw_i2c_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
 #else
-static inline int dw_i2c_of_configure(struct platform_device *pdev)
+static inline int dw_i2c_of_configure(struct dw_i2c_dev *dev)
 {
 	return -ENODEV;
 }
@@ -234,33 +235,25 @@ static const u32 supported_speeds[] = {
 	I2C_MAX_STANDARD_MODE_FREQ,
 };
 
-static int dw_i2c_plat_probe(struct platform_device *pdev)
+int i2c_dw_plat_setup(struct dw_i2c_dev *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev->dev);
 	struct dw_i2c_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct i2c_adapter *adap;
-	struct dw_i2c_dev *dev;
 	struct i2c_timings *t;
 	u32 acpi_speed;
 	struct resource *mem;
-	int i, irq, ret;
+	int i, ret;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
-
-	dev = devm_kzalloc(&pdev->dev, sizeof(struct dw_i2c_dev), GFP_KERNEL);
-	if (!dev)
-		return -ENOMEM;
+	dev->irq = platform_get_irq(pdev, 0);
+	if (dev->irq < 0)
+		return dev->irq;
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dev->base = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(dev->base))
 		return PTR_ERR(dev->base);
 
-	dev->dev = &pdev->dev;
-	dev->irq = irq;
-	platform_set_drvdata(pdev, dev);
-
 	dev->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
 	if (IS_ERR(dev->rst))
 		return PTR_ERR(dev->rst);
@@ -295,13 +288,11 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
 	else
 		t->bus_freq_hz = I2C_MAX_FAST_MODE_FREQ;
 
-	dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
-
 	if (pdev->dev.of_node)
-		dw_i2c_of_configure(pdev);
+		dw_i2c_of_configure(dev);
 
 	if (has_acpi_companion(&pdev->dev))
-		dw_i2c_acpi_configure(pdev);
+		dw_i2c_acpi_configure(dev);
 
 	/*
 	 * Only standard mode at 100kHz, fast mode at 400kHz,
@@ -393,10 +384,11 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
 	reset_control_assert(dev->rst);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(i2c_dw_plat_setup);
 
-static int dw_i2c_plat_remove(struct platform_device *pdev)
+int i2c_dw_plat_clear(struct dw_i2c_dev *dev)
 {
-	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+	struct platform_device *pdev = to_platform_device(dev->dev);
 
 	pm_runtime_get_sync(&pdev->dev);
 
@@ -412,6 +404,29 @@ static int dw_i2c_plat_remove(struct platform_device *pdev)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(i2c_dw_plat_clear);
+
+static int dw_i2c_plat_probe(struct platform_device *pdev)
+{
+	struct dw_i2c_dev *dev;
+
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+
+	dev->dev = &pdev->dev;
+	dev->flags |= (uintptr_t)device_get_match_data(dev->dev);
+	platform_set_drvdata(pdev, dev);
+
+	return i2c_dw_plat_setup(dev);
+}
+
+static int dw_i2c_plat_remove(struct platform_device *pdev)
+{
+	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+
+	return i2c_dw_plat_clear(dev);
+}
 
 #ifdef CONFIG_PM_SLEEP
 static int dw_i2c_plat_prepare(struct device *dev)
@@ -470,17 +485,20 @@ static int dw_i2c_plat_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
+#else
+
+#define dw_i2c_plat_prepare	NULL
+#define dw_i2c_plat_complete	NULL
+
+#endif
+
+const struct dev_pm_ops i2c_dw_plat_dev_pm_ops = {
 	.prepare = dw_i2c_plat_prepare,
 	.complete = dw_i2c_plat_complete,
 	SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
 	SET_RUNTIME_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume, NULL)
 };
-
-#define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops)
-#else
-#define DW_I2C_DEV_PMOPS NULL
-#endif
+EXPORT_SYMBOL_GPL(i2c_dw_plat_dev_pm_ops);
 
 /* Work with hotplug and coldplug */
 MODULE_ALIAS("platform:i2c_designware");
@@ -492,7 +510,7 @@ static struct platform_driver dw_i2c_driver = {
 		.name	= "i2c_designware",
 		.of_match_table = of_match_ptr(dw_i2c_of_match),
 		.acpi_match_table = ACPI_PTR(dw_i2c_acpi_match),
-		.pm	= DW_I2C_DEV_PMOPS,
+		.pm	= &i2c_dw_plat_dev_pm_ops,
 	},
 };
 
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.h b/drivers/i2c/busses/i2c-designware-platdrv.h
new file mode 100644
index 000000000000..8916c4f61d7f
--- /dev/null
+++ b/drivers/i2c/busses/i2c-designware-platdrv.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Synopsys DesignWare I2C adapter driver.
+ */
+#ifndef __I2C_DESIGNWARE_PLATDRV_H__
+#define __I2C_DESIGNWARE_PLATDRV_H__
+
+#include <linux/pm.h>
+
+#include "i2c-designware-core.h"
+
+extern int i2c_dw_plat_setup(struct dw_i2c_dev *dev);
+extern int i2c_dw_plat_clear(struct dw_i2c_dev *dev);
+extern const struct dev_pm_ops i2c_dw_plat_dev_pm_ops;
+
+#endif /* __I2C_DESIGNWARE_PLATDRV_H__ */
