diff options
| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-02-28 17:11:23 +0300 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-06-20 17:30:20 +0300 |
| commit | d67b6a2065076d763c7df626b8c54f16038ad862 (patch) | |
| tree | fb7d98ec56e8a726aa2ea0696c55b6702265729e /include/uapi/drm | |
| parent | b13cc8dd588434e2aec781e6d12224e4c408ac18 (diff) | |
| download | linux-d67b6a2065076d763c7df626b8c54f16038ad862.tar.xz | |
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/uapi/drm')
| -rw-r--r-- | include/uapi/drm/drm.h | 9 |
1 files changed, 9 insertions, 0 deletions
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; |