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| author | Saravana Kannan <saravanak@google.com> | 2020-02-21 17:40:35 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-04 17:58:48 +0100 |
| commit | 8375e74f2bca9802a4ddf431a6d7bd2ab9950f27 (patch) | |
| tree | 791117d1257c1c187d5c6e0d087f8331c072fb00 /include/linux/fwnode.h | |
| parent | 1745d299af5b373abad08fa29bff0d31dc6aff21 (diff) | |
| download | lwn-8375e74f2bca9802a4ddf431a6d7bd2ab9950f27.tar.gz lwn-8375e74f2bca9802a4ddf431a6d7bd2ab9950f27.zip | |
driver core: Add fw_devlink kernel commandline option
fwnode_operations.add_links allows creating device links from
information provided by firmware.
fwnode_operations.add_links is currently implemented only by
OF/devicetree code and a specific case of efi. However, there's nothing
preventing ACPI or other firmware types from implementing it.
The OF implementation is currently controlled by a kernel commandline
parameter called of_devlink.
Since this feature is generic isn't limited to OF, add a generic
fw_devlink kernel commandline parameter to control this feature across
firmware types.
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200222014038.180923-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/fwnode.h')
| -rw-r--r-- | include/linux/fwnode.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h index 8feeb94b8acc..e0abafbb17f8 100644 --- a/include/linux/fwnode.h +++ b/include/linux/fwnode.h @@ -170,4 +170,6 @@ struct fwnode_operations { } while (false) #define get_dev_from_fwnode(fwnode) get_device((fwnode)->dev) +extern u32 fw_devlink_get_flags(void); + #endif |