Heavily based upon Rob Clark's atomic series. - Dropped the connctor state from the crtc state, instead opting for a full-blown connector state. The only thing it has is the desired crtc, but drivers which have connector properties have now a data-structure to subclass.
- Rename create_state to duplicate_state. Especially for legacy ioctls we want updates on top of existing state, so we need a way to get at the current state. We need to be careful to clear the backpointers to the global state correctly though.
- Drop property values. Drivers with properties simply need to subclass the datastructures and track the decoded values in there. I also think that common properties (like rotation) should be decoded and stored in the core structures.
- Create a new set of ->atomic_set_prop functions, for smoother transitions from legacy to atomic operations.
- Pass the ->atomic_set_prop ioctl the right structure to avoid chasing pointers in drivers.
- Drop temporary boolean state for now until we resurrect them with the helper functions.
- Drop invert_dimensions. For now we don't need any checking since that's done by the higher-level legacy ioctls. But even then we should also add rotation/flip tracking to the core drm_crtc_state, not just whether the dimensions are inverted.
- Track crtc state with an enable/disable. That's equivalent to mode_valid, but a bit clearer that it means the entire crtc.
The global interface will follow in subsequent patches.
v2: We need to allow drivers to somehow set up the initial state and clear it on resume. So add a plane->reset callback for that. Helpers will be provided with default behaviour for all these.
v3: Split out the plane->reset into a separate patch.
v4: Improve kerneldoc in drm_crtc.h
v5: Remove unused inline functions for handling state objects, those callbacks are now mandatory for full atomic support.
Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch --- include/drm/drm_crtc.h | 107 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+)
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index a68e02be7e37..9847009ad451 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -224,6 +224,25 @@ struct drm_encoder; struct drm_pending_vblank_event; struct drm_plane; struct drm_bridge; +struct drm_atomic_state; + +/** + * struct drm_crtc_state - mutable crtc state + * @enable: whether the CRTC should be enabled, gates all other state + * @mode: current mode timings + * @event: optional pointer to a DRM event to signal upon completion of the + * state update + * @state: backpointer to global drm_atomic_state + */ +struct drm_crtc_state { + bool enable : 1; + + struct drm_display_mode mode; + + struct drm_pending_vblank_event *event; + + struct drm_atomic_state *state; +};
/** * struct drm_crtc_funcs - control CRTCs for a given device @@ -238,6 +257,9 @@ struct drm_bridge; * @set_property: called when a property is changed * @set_config: apply a new CRTC configuration * @page_flip: initiate a page flip + * @atomic_duplicate_state: duplicate the atomic state for this CRTC + * @atomic_destroy_state: destroy an atomic state for this CRTC + * @atomic_set_property: set a property on an atomic state for this CRTC * * The drm_crtc_funcs structure is the central CRTC management structure * in the DRM. Each CRTC controls one or more connectors (note that the name @@ -288,6 +310,15 @@ struct drm_crtc_funcs {
int (*set_property)(struct drm_crtc *crtc, struct drm_property *property, uint64_t val); + + /* atomic update handling */ + struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); + void (*atomic_destroy_state)(struct drm_crtc *crtc, + struct drm_crtc_state *cstate); + int (*atomic_set_property)(struct drm_crtc *crtc, + struct drm_crtc_state *state, + struct drm_property *property, + uint64_t val); };
/** @@ -317,6 +348,7 @@ struct drm_crtc_funcs { * @pixeldur_ns: precise pixel timing * @helper_private: mid-layer private data * @properties: property tracking for this CRTC + * @state: current atomic state for this CRTC * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for * legacy ioctls * @@ -374,6 +406,8 @@ struct drm_crtc {
struct drm_object_properties properties;
+ struct drm_crtc_state *state; + /* * For legacy crtc ioctls so that atomic drivers can get at the locking * acquire context. @@ -381,6 +415,16 @@ struct drm_crtc { struct drm_modeset_acquire_ctx *acquire_ctx; };
+/** + * struct drm_connector_state - mutable connector state + * @crtc: crtc to connect connector to, NULL if disabled + * @state: backpointer to global drm_atomic_state + */ +struct drm_connector_state { + struct drm_crtc *crtc; + + struct drm_atomic_state *state; +};
/** * struct drm_connector_funcs - control connectors on a given device @@ -393,6 +437,10 @@ struct drm_crtc { * @set_property: property for this connector may need an update * @destroy: make object go away * @force: notify the driver that the connector is forced on + * @atomic_duplicate_state: duplicate the atomic state for this connector + * @atomic_destroy_state: destroy an atomic state for this connector + * @atomic_set_property: set a property on an atomic state for this connector + * * * Each CRTC may have one or more connectors attached to it. The functions * below allow the core DRM code to control connectors, enumerate available modes, @@ -417,6 +465,15 @@ struct drm_connector_funcs { uint64_t val); void (*destroy)(struct drm_connector *connector); void (*force)(struct drm_connector *connector); + + /* atomic update handling */ + struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); + void (*atomic_destroy_state)(struct drm_connector *connector, + struct drm_connector_state *cstate); + int (*atomic_set_property)(struct drm_connector *connector, + struct drm_connector_state *state, + struct drm_property *property, + uint64_t val); };
/** @@ -515,6 +572,7 @@ struct drm_encoder { * @null_edid_counter: track sinks that give us all zeros for the EDID * @bad_edid_counter: track sinks that give us an EDID with invalid checksum * @debugfs_entry: debugfs directory for this connector + * @state: current atomic state for this connector * * Each connector may be connected to one or more CRTCs, or may be clonable by * another connector if they can share a CRTC. Each connector also has a specific @@ -575,8 +633,42 @@ struct drm_connector { unsigned bad_edid_counter;
struct dentry *debugfs_entry; + + struct drm_connector_state *state; +}; + +/** + * struct drm_plane_state - mutable plane state + * @crtc: currently bound CRTC, NULL if disabled + * @fb: currently bound fb + * @crtc_x: left position of visible portion of plane on crtc + * @crtc_y: upper position of visible portion of plane on crtc + * @crtc_w: width of visible portion of plane on crtc + * @crtc_h: height of visible portion of plane on crtc + * @src_x: left position of visible portion of plane within + * plane (in 16.16) + * @src_y: upper position of visible portion of plane within + * plane (in 16.16) + * @src_w: width of visible portion of plane (in 16.16) + * @src_h: height of visible portion of plane (in 16.16) + * @state: backpointer to global drm_atomic_state + */ +struct drm_plane_state { + struct drm_crtc *crtc; + struct drm_framebuffer *fb; + + /* Signed dest location allows it to be partially off screen */ + int32_t crtc_x, crtc_y; + uint32_t crtc_w, crtc_h; + + /* Source values are 16.16 fixed point */ + uint32_t src_x, src_y; + uint32_t src_h, src_w; + + struct drm_atomic_state *state; };
+ /** * struct drm_plane_funcs - driver plane control functions * @update_plane: update the plane configuration @@ -584,6 +676,9 @@ struct drm_connector { * @destroy: clean up plane resources * @reset: reset plane after state has been invalidated (e.g. resume) * @set_property: called when a property is changed + * @atomic_duplicate_state: duplicate the atomic state for this plane + * @atomic_destroy_state: destroy an atomic state for this plane + * @atomic_set_property: set a property on an atomic state for this plane */ struct drm_plane_funcs { int (*update_plane)(struct drm_plane *plane, @@ -598,6 +693,15 @@ struct drm_plane_funcs {
int (*set_property)(struct drm_plane *plane, struct drm_property *property, uint64_t val); + + /* atomic update handling */ + struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane); + void (*atomic_destroy_state)(struct drm_plane *plane, + struct drm_plane_state *cstate); + int (*atomic_set_property)(struct drm_plane *plane, + struct drm_plane_state *state, + struct drm_property *property, + uint64_t val); };
enum drm_plane_type { @@ -621,6 +725,7 @@ enum drm_plane_type { * @funcs: helper functions * @properties: property tracking for this plane * @type: type of plane (overlay, primary, cursor) + * @state: current atomic state for this plane */ struct drm_plane { struct drm_device *dev; @@ -642,6 +747,8 @@ struct drm_plane { struct drm_object_properties properties;
enum drm_plane_type type; + + struct drm_plane_state *state; };
/**