diff options
| author |   Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2018-10-04 11:46:07 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-11-28 15:55:34 -0500 |
| commit | 1398958cfd8d331342d657d37151791dd7256b40 (patch) | |
| tree | 37329fc15ef48d5e0318b6d9d063894602baf303 /include/drm | |
| parent | drm: Add vrr_capable property to the drm connector (diff) | |
| download | linux-dev-1398958cfd8d331342d657d37151791dd7256b40.tar.xz linux-dev-1398958cfd8d331342d657d37151791dd7256b40.zip | |
drm: Add vrr_enabled property to drm CRTC
This patch introduces the 'vrr_enabled' CRTC property to allow
dynamic control over variable refresh rate support for a CRTC.
This property should be treated like a content hint to the driver -
if the hardware or driver is not capable of driving variable refresh
timings then this is not considered an error.
Capability for variable refresh rate support should be determined
by querying the vrr_capable drm connector property.
It is worth noting that while the property is intended for atomic use
it isn't filtered from legacy userspace queries. This allows for Xorg
userspace drivers to implement support.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_crtc.h | 9 | ||||
| -rw-r--r-- | include/drm/drm_mode_config.h | 5 |
2 files changed, 14 insertions, 0 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index b21437bc95bf..39c3900aab3c 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -291,6 +291,15 @@ struct drm_crtc_state { u32 pageflip_flags; /** + * @vrr_enabled: + * + * Indicates if variable refresh rate should be enabled for the CRTC. + * Support for the requested vrr state will depend on driver and + * hardware capabiltiy - lacking support is not treated as failure. + */ + bool vrr_enabled; + + /** * @event: * * Optional pointer to a DRM event to signal upon completion of the diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 5dbeabdbaf91..9db59a1caf5b 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -645,6 +645,11 @@ struct drm_mode_config { * connectors must be of and active must be set to disabled, too. */ struct drm_property *prop_mode_id; + /** + * @prop_vrr_enabled: Default atomic CRTC property to indicate + * whether variable refresh rate should be enabled on the CRTC. + */ + struct drm_property *prop_vrr_enabled; /** * @dvi_i_subconnector_property: Optional DVI-I property to |