@@ -50,6 +50,9 @@ obj-$(CONFIG_I2C_CPM) += i2c-cpm.o
obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o
obj-$(CONFIG_I2C_DESIGNWARE_CORE) += i2c-designware-core.o
i2c-designware-core-objs := i2c-designware-common.o
+ifeq ($(CONFIG_OF),y)
+i2c-designware-core-objs += i2c-designware-of.o
+endif
i2c-designware-core-objs += i2c-designware-master.o
ifeq ($(CONFIG_I2C_DESIGNWARE_SLAVE),y)
i2c-designware-core-objs += i2c-designware-slave.o
@@ -382,3 +382,9 @@ static inline int i2c_dw_validate_speed(struct dw_i2c_dev *dev)
return 0;
}
+
+#if IS_ENABLED(CONFIG_OF)
+int i2c_dw_of_configure(struct device *device);
+#else
+static inline int i2c_dw_of_configure(struct device *device) { return -ENODEV; }
+#endif
new file mode 100644
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Synopsys DesignWare I2C adapter driver.
+ *
+ * Based on the TI DAVINCI I2C adapter driver.
+ *
+ * Copyright (C) 2006 Texas Instruments.
+ * Copyright (C) 2007 MontaVista Software Inc.
+ * Copyright (C) 2009 Provigent Ltd.
+ */
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
+#include "i2c-designware-core.h"
+
+#define MSCC_ICPU_CFG_TWI_DELAY 0x0
+#define MSCC_ICPU_CFG_TWI_DELAY_ENABLE BIT(0)
+#define MSCC_ICPU_CFG_TWI_SPIKE_FILTER 0x4
+
+static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev)
+{
+ writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE,
+ dev->ext + MSCC_ICPU_CFG_TWI_DELAY);
+
+ return 0;
+}
+
+int i2c_dw_of_configure(struct device *device)
+{
+ struct platform_device *pdev = to_platform_device(device);
+ struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+
+ switch (dev->flags & MODEL_MASK) {
+ case MODEL_MSCC_OCELOT:
+ dev->ext = devm_platform_ioremap_resource(pdev, 1);
+ if (!IS_ERR(dev->ext))
+ dev->set_sda_hold_time = mscc_twi_set_sda_hold_time;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(i2c_dw_of_configure);
@@ -17,10 +17,8 @@
#include <linux/errno.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
-#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of.h>
#include <linux/platform_data/i2c-designware.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
@@ -141,49 +139,6 @@ static inline int dw_i2c_acpi_configure(struct platform_device *pdev)
}
#endif
-#ifdef CONFIG_OF
-#define MSCC_ICPU_CFG_TWI_DELAY 0x0
-#define MSCC_ICPU_CFG_TWI_DELAY_ENABLE BIT(0)
-#define MSCC_ICPU_CFG_TWI_SPIKE_FILTER 0x4
-
-static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev)
-{
- writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE,
- dev->ext + MSCC_ICPU_CFG_TWI_DELAY);
-
- return 0;
-}
-
-static int dw_i2c_of_configure(struct platform_device *pdev)
-{
- struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
-
- switch (dev->flags & MODEL_MASK) {
- case MODEL_MSCC_OCELOT:
- dev->ext = devm_platform_ioremap_resource(pdev, 1);
- if (!IS_ERR(dev->ext))
- dev->set_sda_hold_time = mscc_twi_set_sda_hold_time;
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-static const struct of_device_id dw_i2c_of_match[] = {
- { .compatible = "snps,designware-i2c", },
- { .compatible = "mscc,ocelot-i2c", .data = (void *)MODEL_MSCC_OCELOT },
- {},
-};
-MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
-#else
-static inline int dw_i2c_of_configure(struct platform_device *pdev)
-{
- return -ENODEV;
-}
-#endif
-
static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev)
{
pm_runtime_disable(dev->dev);
@@ -254,7 +209,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
if (pdev->dev.of_node)
- dw_i2c_of_configure(pdev);
+ i2c_dw_of_configure(&pdev->dev);
if (has_acpi_companion(&pdev->dev))
dw_i2c_acpi_configure(pdev);
@@ -419,6 +374,13 @@ static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
#define DW_I2C_DEV_PMOPS NULL
#endif
+static const struct of_device_id dw_i2c_of_match[] = {
+ { .compatible = "snps,designware-i2c", },
+ { .compatible = "mscc,ocelot-i2c", .data = (void *)MODEL_MSCC_OCELOT },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
+
/* Work with hotplug and coldplug */
MODULE_ALIAS("platform:i2c_designware");
@@ -427,7 +389,7 @@ static struct platform_driver dw_i2c_driver = {
.remove = dw_i2c_plat_remove,
.driver = {
.name = "i2c_designware",
- .of_match_table = of_match_ptr(dw_i2c_of_match),
+ .of_match_table = dw_i2c_of_match,
.acpi_match_table = ACPI_PTR(dw_i2c_acpi_match),
.pm = DW_I2C_DEV_PMOPS,
},
For better maintenance and possible code reuse in the future, split out OF parts into a separate module. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/i2c/busses/Makefile | 3 ++ drivers/i2c/busses/i2c-designware-core.h | 6 +++ drivers/i2c/busses/i2c-designware-of.c | 50 ++++++++++++++++++ drivers/i2c/busses/i2c-designware-platdrv.c | 56 ++++----------------- 4 files changed, 68 insertions(+), 47 deletions(-) create mode 100644 drivers/i2c/busses/i2c-designware-of.c