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ACPI / property: Extend fwnode_property_* to data-only subnodes

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Modify is_acpi_node() to return "true" for ACPI data-only subnodes as
well as for ACPI device objects and change the name of to_acpi_node()
to to_acpi_device_node() so it is clear that it covers ACPI device
objects only.  Accordingly, introduce to_acpi_data_node() to cover
data-only subnodes in an analogous way.

With that, make the fwnode_property_* family of functions work with
ACPI data-only subnodes introduced previously.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki
2015-08-27 04:40:05 +02:00
parent 263b4c1a64
commit 3a7a2ab839
5 changed files with 174 additions and 62 deletions
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53
include/linux/acpi.h
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@@ -49,7 +49,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
return adev ? adev->handle : NULL;
}
#define ACPI_COMPANION(dev) to_acpi_node((dev)->fwnode)
#define ACPI_COMPANION(dev) to_acpi_device_node((dev)->fwnode)
#define ACPI_COMPANION_SET(dev, adev) set_primary_fwnode(dev, (adev) ? \
acpi_fwnode_handle(adev) : NULL)
#define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev))
@@ -69,7 +69,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
static inline bool has_acpi_companion(struct device *dev)
{
return is_acpi_node(dev->fwnode);
return is_acpi_device_node(dev->fwnode);
}
static inline void acpi_preset_companion(struct device *dev,
@@ -461,7 +461,22 @@ static inline bool is_acpi_node(struct fwnode_handle *fwnode)
return false;
}
static inline struct acpi_device *to_acpi_node(struct fwnode_handle *fwnode)
static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
{
return false;
}
static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
{
return NULL;
}
static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)
{
return false;
}
static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
{
return NULL;
}
@@ -743,17 +758,16 @@ struct acpi_reference_args {
#ifdef CONFIG_ACPI
int acpi_dev_get_property(struct acpi_device *adev, const char *name,
acpi_object_type type, const union acpi_object **obj);
int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
acpi_object_type type,
const union acpi_object **obj);
int acpi_dev_get_property_reference(struct acpi_device *adev,
const char *name, size_t index,
struct acpi_reference_args *args);
int acpi_dev_prop_get(struct acpi_device *adev, const char *propname,
void **valptr);
int acpi_node_prop_get(struct fwnode_handle *fwnode, const char *propname,
void **valptr);
int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val);
int acpi_node_prop_read(struct fwnode_handle *fwnode, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval);
int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval);
@@ -766,13 +780,7 @@ static inline int acpi_dev_get_property(struct acpi_device *adev,
{
return -ENXIO;
}
static inline int acpi_dev_get_property_array(struct acpi_device *adev,
const char *name,
acpi_object_type type,
const union acpi_object **obj)
{
return -ENXIO;
}
static inline int acpi_dev_get_property_reference(struct acpi_device *adev,
const char *name, const char *cells_name,
size_t index, struct acpi_reference_args *args)
@@ -780,6 +788,13 @@ static inline int acpi_dev_get_property_reference(struct acpi_device *adev,
return -ENXIO;
}
static inline int acpi_node_prop_get(struct fwnode_handle *fwnode,
const char *propname,
void **valptr)
{
return -ENXIO;
}
static inline int acpi_dev_prop_get(struct acpi_device *adev,
const char *propname,
void **valptr)
@@ -795,6 +810,14 @@ static inline int acpi_dev_prop_read_single(struct acpi_device *adev,
return -ENXIO;
}
static inline int acpi_node_prop_read(struct fwnode_handle *fwnode,
const char *propname,
enum dev_prop_type proptype,
void *val, size_t nval)
{
return -ENXIO;
}
static inline int acpi_dev_prop_read(struct acpi_device *adev,
const char *propname,
enum dev_prop_type proptype,