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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-02-28 14:11:23 +0000 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-06-20 15:30:20 +0100 |
| commit | d67b6a2065076d763c7df626b8c54f16038ad862 (patch) | |
| tree | fb7d98ec56e8a726aa2ea0696c55b6702265729e /include | |
| parent | b13cc8dd588434e2aec781e6d12224e4c408ac18 (diff) | |
| download | linux-d67b6a2065076d763c7df626b8c54f16038ad862.tar.gz linux-d67b6a2065076d763c7df626b8c54f16038ad862.tar.bz2 linux-d67b6a2065076d763c7df626b8c54f16038ad862.zip | |
drm: writeback: Add client capability for exposing writeback connectors
Due to the fact that writeback connectors behave in a special way
in DRM (they always report being disconnected) we might confuse some
userspace. Add a client capability for writeback connectors that will
filter them out for clients that don't understand the capability.
Changelog:
- only accept the capability if the client has already set the
DRM_CLIENT_CAP_ATOMIC one.
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Link: https://patchwork.freedesktop.org/patch/229038/
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_file.h | 7 | ||||
| -rw-r--r-- | include/uapi/drm/drm.h | 9 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 027ac16da3d1..26485acc51d7 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -193,6 +193,13 @@ struct drm_file { unsigned aspect_ratio_allowed:1; /** + * @writeback_connectors: + * + * True if client understands writeback connectors + */ + unsigned writeback_connectors:1; + + /** * @is_master: * * This client is the creator of @master. Protected by struct diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index 9c660e1688ab..300f336633f2 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -687,6 +687,15 @@ struct drm_get_cap { */ #define DRM_CLIENT_CAP_ASPECT_RATIO 4 +/** + * DRM_CLIENT_CAP_WRITEBACK_CONNECTORS + * + * If set to 1, the DRM core will expose special connectors to be used for + * writing back to memory the scene setup in the commit. Depends on client + * also supporting DRM_CLIENT_CAP_ATOMIC + */ +#define DRM_CLIENT_CAP_WRITEBACK_CONNECTORS 5 + /** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */ struct drm_set_client_cap { __u64 capability; |