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From:   Akhil R <akhilrajeev@nvidia.com>
To:     <u.kleine-koenig@pengutronix.de>, <andy.shevchenko@gmail.com>,
        <christian.koenig@amd.com>, <digetx@gmail.com>,
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CC:     <akhilrajeev@nvidia.com>
Subject: [PATCH v5 3/3] i2c: smbus: Use device_*() functions instead of of_*()
Date:   Fri, 28 Jan 2022 17:14:27 +0530
Message-ID: <1643370267-31804-4-git-send-email-akhilrajeev@nvidia.com>
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Change of_*() functions to device_*() for firmware agnostic usage.
This allows to have the smbus_alert interrupt without any changes
in the controller drivers using the ACPI table.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 drivers/i2c/i2c-core-base.c  |  2 +-
 drivers/i2c/i2c-core-smbus.c | 11 ++++++-----
 drivers/i2c/i2c-smbus.c      |  5 +++--
 include/linux/i2c-smbus.h    |  6 +++---
 4 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 2c59dd7..32a4526 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -1479,7 +1479,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
 		goto out_list;
 	}
 
-	res = of_i2c_setup_smbus_alert(adap);
+	res = i2c_setup_smbus_alert(adap);
 	if (res)
 		goto out_reg;
 
diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c
index e5b2d14..304c2c8 100644
--- a/drivers/i2c/i2c-core-smbus.c
+++ b/drivers/i2c/i2c-core-smbus.c
@@ -14,6 +14,7 @@
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/i2c-smbus.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 
 #include "i2c-core.h"
@@ -701,13 +702,13 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
 }
 EXPORT_SYMBOL_GPL(i2c_new_smbus_alert_device);
 
-#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
-int of_i2c_setup_smbus_alert(struct i2c_adapter *adapter)
+#if IS_ENABLED(CONFIG_I2C_SMBUS)
+int i2c_setup_smbus_alert(struct i2c_adapter *adapter)
 {
 	int irq;
 
-	irq = of_property_match_string(adapter->dev.of_node, "interrupt-names",
-				       "smbus_alert");
+	irq = device_property_match_string(adapter->dev.parent, "interrupt-names",
+					   "smbus_alert");
 	if (irq == -EINVAL || irq == -ENODATA)
 		return 0;
 	else if (irq < 0)
@@ -715,5 +716,5 @@ int of_i2c_setup_smbus_alert(struct i2c_adapter *adapter)
 
 	return PTR_ERR_OR_ZERO(i2c_new_smbus_alert_device(adapter, NULL));
 }
-EXPORT_SYMBOL_GPL(of_i2c_setup_smbus_alert);
+EXPORT_SYMBOL_GPL(i2c_setup_smbus_alert);
 #endif
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index d3d06e3..7753329 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -13,7 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_irq.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 
@@ -128,7 +128,8 @@ static int smbalert_probe(struct i2c_client *ara,
 	if (setup) {
 		irq = setup->irq;
 	} else {
-		irq = of_irq_get_byname(adapter->dev.of_node, "smbus_alert");
+		irq = fwnode_irq_get_byname(dev_fwnode(adapter->dev.parent),
+					    "smbus_alert");
 		if (irq <= 0)
 			return irq;
 	}
diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h
index 1ef4218..95cf902 100644
--- a/include/linux/i2c-smbus.h
+++ b/include/linux/i2c-smbus.h
@@ -30,10 +30,10 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
 					      struct i2c_smbus_alert_setup *setup);
 int i2c_handle_smbus_alert(struct i2c_client *ara);
 
-#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
-int of_i2c_setup_smbus_alert(struct i2c_adapter *adap);
+#if IS_ENABLED(CONFIG_I2C_SMBUS)
+int i2c_setup_smbus_alert(struct i2c_adapter *adap);
 #else
-static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap)
+static inline int i2c_setup_smbus_alert(struct i2c_adapter *adap)
 {
 	return 0;
 }
-- 
2.7.4