nagai/kernel
3
0
Fork 0
forked from mirrors/linux
Code Pull requests Activity

device property: Introduce fwnode_device_is_available()

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

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-06-06 12:37:39 +03:00 committed by Rafael J. Wysocki
parent 3b27d00e7b
commit 2294b3af05
5 changed files with 27 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/acpi/property.c
View file

@ -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,

10
drivers/base/property.c
View file

@ -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

6
drivers/of/property.c
View file

@ -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,

1
include/linux/fwnode.h
View file

@ -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,

1
include/linux/property.h
View file

@ -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,