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
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| @@ -332,14 +332,19 @@ struct drm_mode_get_encoder { · 331 unmodified lines | |||
| 332 | /* This is for connectors with multiple signal types. */ | 332 | /* This is for connectors with multiple signal types. */ |
| 333 | /* Try to match DRM_MODE_CONNECTOR_X as closely as possible. */ | 333 | /* Try to match DRM_MODE_CONNECTOR_X as closely as possible. */ |
| 334 | enum drm_mode_subconnector { | 334 | enum drm_mode_subconnector { |
| 335 | DRM_MODE_SUBCONNECTOR_Automatic = 0, | 335 | DRM_MODE_SUBCONNECTOR_Automatic = 0, /* DVI-I, TV */ |
| 336 | DRM_MODE_SUBCONNECTOR_Unknown = 0, | 336 | DRM_MODE_SUBCONNECTOR_Unknown = 0, /* DVI-I, TV, DP */ |
| 337 | DRM_MODE_SUBCONNECTOR_DVID = 3, | 337 | DRM_MODE_SUBCONNECTOR_VGA = 1, /* DP */ |
| 338 | DRM_MODE_SUBCONNECTOR_DVIA = 4, | 338 | DRM_MODE_SUBCONNECTOR_DVID = 3, /* DVI-I DP */ |
| 339 | DRM_MODE_SUBCONNECTOR_Composite = 5, | 339 | DRM_MODE_SUBCONNECTOR_DVIA = 4, /* DVI-I */ |
| 340 | DRM_MODE_SUBCONNECTOR_SVIDEO = 6, | 340 | DRM_MODE_SUBCONNECTOR_Composite = 5, /* TV */ |
| 341 | DRM_MODE_SUBCONNECTOR_Component = 8, | 341 | DRM_MODE_SUBCONNECTOR_SVIDEO = 6, /* TV */ |
| 342 | DRM_MODE_SUBCONNECTOR_SCART = 9, | 342 | DRM_MODE_SUBCONNECTOR_Component = 8, /* TV */ |
| 343 | DRM_MODE_SUBCONNECTOR_SCART = 9, /* TV */ | ||
| 344 | DRM_MODE_SUBCONNECTOR_DisplayPort = 10, /* DP */ | ||
| 345 | DRM_MODE_SUBCONNECTOR_HDMIA = 11, /* DP */ | ||
| 346 | DRM_MODE_SUBCONNECTOR_Native = 15, /* DP */ | ||
| 347 | DRM_MODE_SUBCONNECTOR_Wireless = 18, /* DP */ | ||
| 343 | }; | 348 | }; |
| 344 | 349 | ||
| 345 | #define DRM_MODE_CONNECTOR_Unknown 0 | 350 | #define DRM_MODE_CONNECTOR_Unknown 0 |