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Commit 2294b3af authored by Sakari Ailus's avatar Sakari Ailus Committed by Rafael J. Wysocki
Browse files

device property: Introduce fwnode_device_is_available() 



Add fwnode_device_is_available() to tell whether the device corresponding
to a certain fwnode_handle is available for use.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 3b27d00e

drivers/acpi/property.c

+9 −0
Original line number Diff line number Diff line
@@ -1121,6 +1121,14 @@ int acpi_graph_get_remote_endpoint(struct fwnode_handle *fwnode, 
	return 0;

}



static bool acpi_fwnode_device_is_available(struct fwnode_handle *fwnode)

{

	if (!is_acpi_device_node(fwnode))

		return false;



	return acpi_device_is_present(to_acpi_device_node(fwnode));

}



static bool acpi_fwnode_property_present(struct fwnode_handle *fwnode,

					 const char *propname)

{
@@ -1216,6 +1224,7 @@ static int acpi_fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, 
}



const struct fwnode_operations acpi_fwnode_ops = {

	.device_is_available = acpi_fwnode_device_is_available,

	.property_present = acpi_fwnode_property_present,

	.property_read_int_array = acpi_fwnode_property_read_int_array,

	.property_read_string_array = acpi_fwnode_property_read_string_array,

drivers/base/property.c

+10 −0
Original line number Diff line number Diff line
@@ -1021,6 +1021,16 @@ void fwnode_handle_put(struct fwnode_handle *fwnode) 
}

EXPORT_SYMBOL_GPL(fwnode_handle_put);



/**

 * fwnode_device_is_available - check if a device is available for use

 * @fwnode: Pointer to the fwnode of the device.

 */

bool fwnode_device_is_available(struct fwnode_handle *fwnode)

{

	return fwnode_call_int_op(fwnode, device_is_available);

}

EXPORT_SYMBOL_GPL(fwnode_device_is_available);



/**

 * device_get_child_node_count - return the number of child nodes for device

 * @dev: Device to cound the child nodes for

drivers/of/property.c

+6 −0
Original line number Diff line number Diff line
@@ -775,6 +775,11 @@ static void of_fwnode_put(struct fwnode_handle *fwnode) 
	of_node_put(to_of_node(fwnode));

}



static bool of_fwnode_device_is_available(struct fwnode_handle *fwnode)

{

	return of_device_is_available(to_of_node(fwnode));

}



static bool of_fwnode_property_present(struct fwnode_handle *fwnode,

				       const char *propname)

{
@@ -895,6 +900,7 @@ static int of_fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, 
const struct fwnode_operations of_fwnode_ops = {

	.get = of_fwnode_get,

	.put = of_fwnode_put,

	.device_is_available = of_fwnode_device_is_available,

	.property_present = of_fwnode_property_present,

	.property_read_int_array = of_fwnode_property_read_int_array,

	.property_read_string_array = of_fwnode_property_read_string_array,

include/linux/fwnode.h

+1 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ struct fwnode_endpoint { 
struct fwnode_operations {

	void (*get)(struct fwnode_handle *fwnode);

	void (*put)(struct fwnode_handle *fwnode);

	bool (*device_is_available)(struct fwnode_handle *fwnode);

	bool (*property_present)(struct fwnode_handle *fwnode,

				 const char *propname);

	int (*property_read_int_array)(struct fwnode_handle *fwnode,

include/linux/property.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ int device_property_read_string(struct device *dev, const char *propname, 
int device_property_match_string(struct device *dev,

				 const char *propname, const char *string);



bool fwnode_device_is_available(struct fwnode_handle *fwnode);

bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname);

int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,

				  const char *propname, u8 *val,