linux-kernel - [PATCH v1 7/8] software node: Introduce SOFTWARE_NODE

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Date:   Sun, 28 Mar 2021 00:20:11 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-acpi@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Yong Zhi <yong.zhi@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: [PATCH v1 7/8] software node: Introduce SOFTWARE_NODE_REFERENCE() helper macro

This is useful to assign software node reference with arguments
in a common way. Moreover, we have already couple of users that
may be converted. And by the fact, one of them is moved right here
to use the helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/base/test/property-entry-test.c | 11 ++---------
 include/linux/property.h                | 13 ++++++++-----
 2 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/base/test/property-entry-test.c b/drivers/base/test/property-entry-test.c
index abe03315180f..c2e455d46ffd 100644
--- a/drivers/base/test/property-entry-test.c
+++ b/drivers/base/test/property-entry-test.c
@@ -370,15 +370,8 @@ static void pe_test_reference(struct kunit *test)
 	};
 
 	static const struct software_node_ref_args refs[] = {
-		{
-			.node = &nodes[0],
-			.nargs = 0,
-		},
-		{
-			.node = &nodes[1],
-			.nargs = 2,
-			.args = { 3, 4 },
-		},
+		SOFTWARE_NODE_REFERENCE(&nodes[0]),
+		SOFTWARE_NODE_REFERENCE(&nodes[1], 3, 4),
 	};
 
 	const struct property_entry entries[] = {
diff --git a/include/linux/property.h b/include/linux/property.h
index dd4687b56239..0d876316e61d 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -254,6 +254,13 @@ struct software_node_ref_args {
 	u64 args[NR_FWNODE_REFERENCE_ARGS];
 };
 
+#define SOFTWARE_NODE_REFERENCE(_ref_, ...)			\
+(const struct software_node_ref_args) {				\
+	.node = _ref_,						\
+	.nargs = ARRAY_SIZE(((u64[]){ 0, ##__VA_ARGS__ })) - 1,	\
+	.args = { __VA_ARGS__ },				\
+}
+
 /**
  * struct property_entry - "Built-in" device property representation.
  * @name: Name of the property.
@@ -362,11 +369,7 @@ struct property_entry {
 	.name = _name_,							\
 	.length = sizeof(struct software_node_ref_args),		\
 	.type = DEV_PROP_REF,						\
-	{ .pointer = &(const struct software_node_ref_args) {		\
-		.node = _ref_,						\
-		.nargs = ARRAY_SIZE(((u64[]){ 0, ##__VA_ARGS__ })) - 1,	\
-		.args = { __VA_ARGS__ },				\
-	} },								\
+	{ .pointer = &SOFTWARE_NODE_REFERENCE(_ref_, ##__VA_ARGS__), },	\
 }
 
 struct property_entry *
-- 
2.30.2