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| author | Oleg Vasilev <oleg.vasilev@intel.com> | 2020-04-24 15:50:51 +0300 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2020-08-11 15:06:04 +0300 |
| commit | e5b92773287c3eb3108a44785986a6c997866df8 (patch) | |
| tree | 5010ee93d3f78062e0513c9e6f9985df209dcc68 /include/drm/drm_mode_config.h | |
| parent | a343160235f59b5baacaecba7b7ee14abe8ae034 (diff) | |
| download | linux-e5b92773287c3eb3108a44785986a6c997866df8.tar.xz | |
drm: report dp downstream port type as a subconnector property
Currently, downstream port type is only reported in debugfs. This
information should be considered important since it reflects the actual
physical connector type. Some userspace (e.g. window compositors)
may want to show this info to a user.
The 'subconnector' property is already utilized for DVI-I and TV-out for
reporting connector subtype.
The initial motivation for this feature came from i2c test [1].
It is supposed to be skipped on VGA connectors, but it cannot
detect VGA over DP and fails instead.
v2:
- Ville: utilized drm_dp_is_branch()
- Ville: implement DP 1.0 downstream type info
- Replaced create_dp_properties with add_dp_subconnector_property
- Added dp_set_subconnector_property helper
v4:
- Ville: add DP1.0 best assumption about subconnector
- Ville: assume DVI is DVI-D
- Ville: reuse Writeback enum value for Virtual subconnector
- Renamed #defines: HDMI -> HDMIA, DP -> DisplayPort
v5: rebase
v6:
- Jani Nikula: renamed a function name
- Jani Nikula: addressed the issues with documentation
[1]: https://bugs.freedesktop.org/show_bug.cgi?id=104097
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Jeevan B <jeevan.b@intel.com>
Signed-off-by: Oleg Vasilev <oleg.vasilev@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1587732655-17544-1-git-send-email-jeevan.b@intel.com
Diffstat (limited to 'include/drm/drm_mode_config.h')
| -rw-r--r-- | include/drm/drm_mode_config.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index ffb9852a0638..f768c7cf7de3 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -681,6 +681,12 @@ struct drm_mode_config { struct drm_property *dvi_i_select_subconnector_property; /** + * @dp_subconnector_property: Optional DP property to differentiate + * between different DP downstream port types. + */ + struct drm_property *dp_subconnector_property; + + /** * @tv_subconnector_property: Optional TV property to differentiate * between different TV connector types. */ |