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| author | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2018-05-08 16:39:41 +0530 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-05-11 09:05:03 +0200 |
| commit | 7595bda2fb4378ccbb8db1d0e8de56d15ea7f7fa (patch) | |
| tree | fbdb67703153ed0c8ee21c4276e578d1c19bd778 /include/drm/drm_file.h | |
| parent | bfe2e2c9564dd8e7c0109a7b1cc1bf61fbbedf95 (diff) | |
| download | linux-7595bda2fb4378ccbb8db1d0e8de56d15ea7f7fa.tar.bz2 | |
drm: Add DRM client cap for aspect-ratio
To enable aspect-ratio support in DRM, blindly exposing the aspect
ratio information along with mode, can break things in existing
non-atomic user-spaces which have no intention or support to use this
aspect ratio information.
To avoid this, a new drm client cap is required to enable a non-atomic
user-space to advertise if it supports modes with aspect-ratio. Based
on this cap value, the kernel will take a call on exposing the aspect
ratio info in modes or not.
This patch adds the client cap for aspect-ratio.
Since no atomic-userspaces blow up on receiving aspect-ratio
information, the client cap for aspect-ratio is always enabled
for atomic clients.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: rebase
V4: As suggested by Marteen Lankhorst modified the commit message
explaining the need to use the DRM cap for aspect-ratio. Also,
tweaked the comment lines in the code for better understanding and
clarity, as recommended by Shashank Sharma.
V5: rebase
V6: rebase
V7: rebase
V8: rebase
V9: rebase
V10: rebase
V11: rebase
V12: As suggested by Daniel Vetter and Ville Syrjala,
always enable aspect-ratio client cap for atomic userspaces,
if no atomic userspace breaks on aspect-ratio bits.
V13: rebase
V14: rebase
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-7-git-send-email-ankit.k.nautiyal@intel.com
Diffstat (limited to 'include/drm/drm_file.h')
| -rw-r--r-- | include/drm/drm_file.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 99ab50cbab00..91a65a360079 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -181,6 +181,14 @@ struct drm_file { unsigned atomic:1; /** + * @aspect_ratio_allowed: + * + * True, if client can handle picture aspect ratios, and has requested + * to pass this information along with the mode. + */ + unsigned aspect_ratio_allowed:1; + + /** * @is_master: * * This client is the creator of @master. Protected by struct |