i2c: designware: Use device_is_compatible() instead of custom approach

We use MODEL_MSCC_OCELOT effectively as a flag for comparing against
"compatible" property. Use device_is_compatible() directly to make it
clear.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260114081954.252160-3-andriy.shevchenko@linux.intel.com

Author: andy-shev

drivers/i2c/busses/i2c-designware-common.c

@@ -243,14 +243,10 @@ static void i2c_dw_of_configure(struct device *device)
 	struct platform_device *pdev = to_platform_device(device);
 	struct dw_i2c_dev *dev = dev_get_drvdata(device);
 
-	switch (dev->flags & MODEL_MASK) {
-	case MODEL_MSCC_OCELOT:
+	if (device_is_compatible(dev->dev, "mscc,ocelot-i2c")) {
 		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;
 	}
 }
 

drivers/i2c/busses/i2c-designware-core.h

@@ -326,7 +326,6 @@ struct dw_i2c_dev {
 #define ARBITRATION_SEMAPHORE			BIT(2)
 #define ACCESS_POLLING				BIT(3)
 
-#define MODEL_MSCC_OCELOT			BIT(8)
 #define MODEL_AMD_NAVI_GPU			BIT(10)
 #define MODEL_WANGXUN_SP			BIT(11)
 #define MODEL_MASK				GENMASK(11, 8)

drivers/i2c/busses/i2c-designware-platdrv.c

@@ -267,7 +267,7 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id dw_i2c_of_match[] = {
-	{ .compatible = "mscc,ocelot-i2c", .data = (void *)MODEL_MSCC_OCELOT },
+	{ .compatible = "mscc,ocelot-i2c" },
 	{ .compatible = "snps,designware-i2c" },
 	{}
 };