linux-kernel - [PATCH v1 2/2] i2c: designware: Use device_is

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Message-ID: <20260114081954.252160-3-andriy.shevchenko@linux.intel.com>
Date: Wed, 14 Jan 2026 09:17:51 +0100
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Andi Shyti <andi.shyti@...nel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Jan Dabros <jsd@...ihalf.com>
Subject: [PATCH v1 2/2] i2c: designware: Use device_is_compatible() instead of custom approach

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

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/i2c/busses/i2c-designware-common.c  | 6 +-----
 drivers/i2c/busses/i2c-designware-core.h    | 1 -
 drivers/i2c/busses/i2c-designware-platdrv.c | 2 +-
 3 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-common.c b/drivers/i2c/busses/i2c-designware-common.c
index 5b1e8f74c4ac..c766d9821975 100644
--- a/drivers/i2c/busses/i2c-designware-common.c
+++ b/drivers/i2c/busses/i2c-designware-common.c
@@ -238,14 +238,10 @@ 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;
 	}
 }
 
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index cf0364079b55..10055f0e0ec3 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -313,7 +313,6 @@ 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)
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 2e532f16691b..4e6fe3b55322 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/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" },
 	{}
 };
-- 
2.50.1