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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-11-26 16:57:41 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-12-17 20:23:22 +0100 |
| commit | d9b13620fa09d2652008f96e083592c772532fd1 (patch) | |
| tree | 418292e212afc0e8242e27097955d7cc6fbb68eb /include/drm | |
| parent | drm/atomic: fix potential null ptr on plane enable (diff) | |
| download | linux-dev-d9b13620fa09d2652008f96e083592c772532fd1.tar.xz linux-dev-d9b13620fa09d2652008f96e083592c772532fd1.zip | |
drm/atomic-helper: Export both plane and modeset check helpers
The default call sequence for these two parts won't fit for all
drivers. So export the two pieces and explain with a bit of kerneldoc
when each should be called.
v2: Squash in fixup from Rob to actually add the newly exported
functions to headers
Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_atomic_helper.h | 4 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h index f956b413311e..2095917ff8c7 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -30,6 +30,10 @@ #include <drm/drm_crtc.h> +int drm_atomic_helper_check_modeset(struct drm_device *dev, + struct drm_atomic_state *state); +int drm_atomic_helper_check_planes(struct drm_device *dev, + struct drm_atomic_state *state); int drm_atomic_helper_check(struct drm_device *dev, struct drm_atomic_state *state); int drm_atomic_helper_commit(struct drm_device *dev, diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index b86329813ad3..4ee78212f8bf 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -238,6 +238,7 @@ struct drm_atomic_state; /** * struct drm_crtc_state - mutable CRTC state * @enable: whether the CRTC should be enabled, gates all other state + * @active: whether the CRTC is actively displaying (used for DPMS) * @mode_changed: for use by helpers and drivers when computing state updates * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes * @last_vblank_count: for helpers and drivers to capture the vblank of the @@ -248,9 +249,16 @@ struct drm_atomic_state; * @event: optional pointer to a DRM event to signal upon completion of the * state update * @state: backpointer to global drm_atomic_state + * + * Note that the distinction between @enable and @active is rather subtile: + * Flipping @active while @enable is set without changing anything else may + * never return in a failure from the ->atomic_check callback. Userspace assumes + * that a DPMS On will always succeed. In other words: @enable controls resource + * assignment, @active controls the actual hardware state. */ struct drm_crtc_state { bool enable; + bool active; /* computed state bits used by helpers and drivers */ bool planes_changed : 1; |