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| author | Hans de Goede <hdegoede@redhat.com> | 2021-08-18 00:51:55 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-08-20 13:35:59 +0300 |
| commit | 48c429c6d18db115c277b75000152d8fa4cd35d0 (patch) | |
| tree | 015f1e3aa9c11f2e4187d069dcd1ffa6ce110667 /include/drm/drm_connector.h | |
| parent | 331de7db3012b8e8e8d77beebc8f743e288d4c42 (diff) | |
| download | linux-48c429c6d18db115c277b75000152d8fa4cd35d0.tar.xz | |
drm/connector: Add a fwnode pointer to drm_connector and register with ACPI (v2)
Add a fwnode pointer to struct drm_connector and register an acpi_bus_type
for the connectors with the ACPI subsystem (when CONFIG_ACPI is enabled).
The adding of the fwnode pointer allows drivers to associate a fwnode
that represents a connector with that connector.
When the new fwnode pointer points to an ACPI-companion, then the new
acpi_bus_type will cause the ACPI subsys to bind the device instantiated
for the connector with the fwnode by calling acpi_bind_one(). This will
result in a firmware_node symlink under /sys/class/card#-<connecter-name>/
which helps to verify that the fwnode-s and connectors are properly
matched.
Changes in v2:
- Make drm_connector_cleanup() call fwnode_handle_put() on
connector->fwnode and document this
Co-developed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://lore.kernel.org/r/20210817215201.795062-3-hdegoede@redhat.com
Diffstat (limited to 'include/drm/drm_connector.h')
| -rw-r--r-- | include/drm/drm_connector.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 1647960c9e50..69dd488a2154 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1228,6 +1228,14 @@ struct drm_connector { struct device *kdev; /** @attr: sysfs attributes */ struct device_attribute *attr; + /** + * @fwnode: associated fwnode supplied by platform firmware + * + * Drivers can set this to associate a fwnode with a connector, drivers + * are expected to get a reference on the fwnode when setting this. + * drm_connector_cleanup() will call fwnode_handle_put() on this. + */ + struct fwnode_handle *fwnode; /** * @head: |