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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-06-06 12:37:39 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-22 03:55:34 +0300 |
| commit | 2294b3af05e9b3fe0b84a78971e709037bd7593c (patch) | |
| tree | 36e1766ebc6f3d159ab2bdfca2b71244689b503c | |
| parent | 3b27d00e7b6d7c889d87fd00df600c495b968e30 (diff) | |
| download | linux-2294b3af05e9b3fe0b84a78971e709037bd7593c.tar.xz | |
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: 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>
| -rw-r--r-- | drivers/acpi/property.c | 9 | ||||
| -rw-r--r-- | drivers/base/property.c | 10 | ||||
| -rw-r--r-- | drivers/of/property.c | 6 | ||||
| -rw-r--r-- | include/linux/fwnode.h | 1 | ||||
| -rw-r--r-- | include/linux/property.h | 1 |
5 files changed, 27 insertions, 0 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index a24ca61294eb..917c789f953d 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -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, diff --git a/drivers/base/property.c b/drivers/base/property.c index e1a58ac8840e..b979f8a2f4fb 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1022,6 +1022,16 @@ 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 */ diff --git a/drivers/of/property.c b/drivers/of/property.c index e859e41e33f3..c96389b7c6b3 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -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, diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h index e315d867d631..9ab375419189 100644 --- a/include/linux/fwnode.h +++ b/include/linux/fwnode.h @@ -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, diff --git a/include/linux/property.h b/include/linux/property.h index 2f482616a2f2..7be014af78ed 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -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, |