From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heikki Krogerus Subject: [PATCH v6 1/3] device property: Introduce fwnode_get_name() Date: Tue, 11 Dec 2018 16:14:49 +0300 Message-ID: <20181211131451.52832-2-heikki.krogerus@linux.intel.com> References: <20181211131451.52832-1-heikki.krogerus@linux.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20181211131451.52832-1-heikki.krogerus@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Rafael J. Wysocki" , Andy Shevchenko Cc: Mika Westerberg , Rob Herring , Frank Rowand , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org List-Id: linux-acpi@vger.kernel.org This helper returns the name of the node. Signed-off-by: Heikki Krogerus --- drivers/base/property.c | 17 +++++++++++++++++ include/linux/fwnode.h | 3 +++ include/linux/property.h | 2 ++ 3 files changed, 22 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index 240cd0f40605..51a32bb27551 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -679,6 +679,23 @@ void fwnode_handle_put(struct fwnode_handle *fwnode) } EXPORT_SYMBOL_GPL(fwnode_handle_put); +/** + * fwnode_get_name - Copy the name of an fwnode to a buffer + * @fwnode: Pointer to the node + * @buf: Buffer where the name is copied to + * @len: Size of the buffer + * + * Copies the node name of @fwnode to @buf. NOTE: @buf must be large enough to + * accommodate the name and trailing '\0'. + * + * Returns 0 on success or errno in case of an error. + */ +int fwnode_get_name(const struct fwnode_handle *fwnode, char *buf, size_t len) +{ + return fwnode_call_int_op(fwnode, get_name, buf, len); +} +EXPORT_SYMBOL_GPL(fwnode_get_name); + /** * fwnode_device_is_available - check if a device is available for use * @fwnode: Pointer to the fwnode of the device. diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h index faebf0ca0686..a211b55a5da1 100644 --- a/include/linux/fwnode.h +++ b/include/linux/fwnode.h @@ -52,6 +52,7 @@ struct fwnode_reference_args { * struct fwnode_operations - Operations for fwnode interface * @get: Get a reference to an fwnode. * @put: Put a reference to an fwnode. + * @get_name: Get the name of an fwnode * @device_get_match_data: Return the device driver match data. * @property_present: Return true if a property is present. * @property_read_integer_array: Read an array of integer properties. Return @@ -72,6 +73,8 @@ struct fwnode_reference_args { struct fwnode_operations { struct fwnode_handle *(*get)(struct fwnode_handle *fwnode); void (*put)(struct fwnode_handle *fwnode); + int (*get_name)(const struct fwnode_handle *fwnode, char *buf, + size_t len); bool (*device_is_available)(const struct fwnode_handle *fwnode); const void *(*device_get_match_data)(const struct fwnode_handle *fwnode, const struct device *dev); diff --git a/include/linux/property.h b/include/linux/property.h index 3789ec755fb6..14369f36b0b1 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -109,6 +109,8 @@ struct fwnode_handle *device_get_named_child_node(struct device *dev, struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode); void fwnode_handle_put(struct fwnode_handle *fwnode); +int fwnode_get_name(const struct fwnode_handle *fwnode, char *name, size_t len); + int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index); unsigned int device_get_child_node_count(struct device *dev); -- 2.19.2