linux-kernel - [PATCH 03/10] device property: Add fwnode_property_read_int

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Message-ID: <20250326171411.590681-4-remo@buenzli.dev>
Date: Wed, 26 Mar 2025 18:13:42 +0100
From: Remo Senekowitsch <remo@...nzli.dev>
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>,
	Rob Herring <robh@...nel.org>
Cc: Dirk Behme <dirk.behme@...bosch.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Remo Senekowitsch <remo@...nzli.dev>,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	devicetree@...r.kernel.org,
	rust-for-linux@...r.kernel.org
Subject: [PATCH 03/10] device property: Add fwnode_property_read_int_array()

The rust bindings for reading device properties has a single
implementation supporting differing sizes of integers. The fwnode C API
already has a similar interface, but it is not exposed with the
fwnode_property_ API. Add the fwnode_property_read_int_array() wrapper.

Co-developed-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Remo Senekowitsch <remo@...nzli.dev>
---
 drivers/base/property.c  | 9 +++++----
 include/linux/property.h | 2 ++
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index c1392743d..64d5b7055 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -292,10 +292,10 @@ int device_property_match_string(const struct device *dev, const char *propname,
 }
 EXPORT_SYMBOL_GPL(device_property_match_string);
 
-static int fwnode_property_read_int_array(const struct fwnode_handle *fwnode,
-					  const char *propname,
-					  unsigned int elem_size, void *val,
-					  size_t nval)
+int fwnode_property_read_int_array(const struct fwnode_handle *fwnode,
+				   const char *propname,
+				   unsigned int elem_size, void *val,
+				   size_t nval)
 {
 	int ret;
 
@@ -310,6 +310,7 @@ static int fwnode_property_read_int_array(const struct fwnode_handle *fwnode,
 	return fwnode_call_int_op(fwnode->secondary, property_read_int_array, propname,
 				  elem_size, val, nval);
 }
+EXPORT_SYMBOL_GPL(fwnode_property_read_int_array);
 
 /**
  * fwnode_property_read_u8_array - return a u8 array property of firmware node
diff --git a/include/linux/property.h b/include/linux/property.h
index e214ecd24..441a1ad76 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -57,6 +57,8 @@ bool fwnode_property_present(const struct fwnode_handle *fwnode,
 			     const char *propname);
 bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
 			     const char *propname);
+int fwnode_property_read_int_array(const struct fwnode_handle *fwnode, const char *propname,
+				   unsigned int elem_size, void *val, size_t nval);
 int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
 				  const char *propname, u8 *val,
 				  size_t nval);
-- 
2.49.0