kernel/git/stable/linux-stable.git/drivers/base/property.c, branch linux-4.12.y

device property: Read strings using string array reading functions

2017-03-29T20:59:40+00:00

Always read strings using of_property_read_string_array() instead of of_property_read_string(). This allows using a single operation struct callback for accessing strings. Same for pset_prop_read_string_array() and pset_prop_read_string(). Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: fwnode_property_read_string_array() returns nr of strings

2017-03-28T22:00:30+00:00

Functionally fwnode_property_read_string_array() should match of_property_read_string_array() and work as a drop-in substitute for the latter. of_property_read_string_array() returns the number of strings read if the target string pointer array is non-NULL. Make fwnode_property_read_string_array() do the same. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Fix reading pset strings using array access functions

2017-03-28T22:00:30+00:00

The length field value of non-array string properties is the length of the string itself. Non-array string properties thus require specific handling. Fix this. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: fwnode_property_read_string_array() may return -EILSEQ

2017-03-28T22:00:30+00:00

fwnode_property_read_string_array() may return -EILSEQ through of_property_read_string_array(). Document this. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Add fwnode_get_next_parent()

2017-03-28T22:00:29+00:00

In order to differentiate the functionality between dropping a reference to the node (or not) for the benefit of OF, introduce fwnode_get_next_parent(). Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Add support for fwnode endpoints

2017-03-28T22:00:29+00:00

Similar to OF endpoints, endpoint type nodes can be also supported on ACPI. In order to make it possible for drivers to ignore the matter, add a type for fwnode_endpoint and a function to parse them. On ACPI, find the child node index instead of relying on the "endpoint" property. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Make dev_fwnode() public

2017-03-28T22:00:28+00:00

The function to obtain a fwnode related to a struct device is useful for drivers that use the fwnode property API: it allows not being aware of the underlying firmware implementation. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Add fwnode_handle_get()

2017-03-28T22:00:28+00:00

fwnode_handle_get() is used to obtain a reference to a fwnode_handle container. In this case this is OF specific struct device_node. This complements fwnode_handle_put() which is already implemented. Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki

device property: Add support for remote endpoints

2017-03-28T22:00:28+00:00

This follows DT implementation of of_graph_* APIs but we call them fwnode_graph_* instead. For DT nodes the existing of_graph_* implementation will be used. For ACPI we use the new ACPI graph implementation instead. Signed-off-by: Mika Westerberg Signed-off-by: Sakari Ailus Signed-off-by: Rafael J. Wysocki

device property: Add fwnode_get_named_child_node()

2017-03-28T22:00:28+00:00

Since now we have means to enumerate all children of any fwnode even in ACPI we can implement fwnode_get_named_child_node(). This is similar than device_get_named_child_node() with the exception that it can be called to any fwnode handle. Make device_get_named_child_node() call directly this new function. This is useful in cases where we need to be able to find child nodes which are not direct descendants of the parent device. Signed-off-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki