linux-kernel - [RFC 02/10] property: add fwnode_get_match

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Date:   Mon, 21 Feb 2022 17:26:44 +0100
From:   Clément Léger <clement.leger@...tlin.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>, Peter Rosin <peda@...ntia.se>,
        Russell King <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-i2c@...r.kernel.org, netdev@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Clément Léger <clement.leger@...tlin.com>
Subject: [RFC 02/10] property: add fwnode_get_match_data()

Add fwnode_get_match_data() which is meant to be used as
device_get_match_data for fwnode_operations.

Signed-off-by: Clément Léger <clement.leger@...tlin.com>
---
 drivers/base/property.c  | 12 ++++++++++++
 include/linux/property.h |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 434c2713fd99..6ffb3ac4509c 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1181,6 +1181,18 @@ const struct of_device_id *fwnode_match_node(const struct fwnode_handle *fwnode,
 }
 EXPORT_SYMBOL(fwnode_match_node);
 
+const void *fwnode_get_match_data(const struct fwnode_handle *fwnode,
+				  const struct device *dev)
+{
+	const struct of_device_id *match;
+
+	match = fwnode_match_node(fwnode, dev->driver->of_match_table);
+	if (!match)
+		return NULL;
+
+	return match->data;
+}
+
 const void *device_get_match_data(struct device *dev)
 {
 	return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
diff --git a/include/linux/property.h b/include/linux/property.h
index 978ecf6be34e..7f727c492602 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -449,6 +449,9 @@ static inline void *device_connection_find_match(struct device *dev,
 const struct of_device_id *fwnode_match_node(const struct fwnode_handle *fwnode,
 					     const struct of_device_id *matches);
 
+const void *fwnode_get_match_data(const struct fwnode_handle *fwnode,
+				  const struct device *dev);
+
 /* -------------------------------------------------------------------------- */
 /* Software fwnode support - when HW description is incomplete or missing */
 
-- 
2.34.1