forked from mirrors/linux
drm: Extract drm_atomic_state_helper.[hc]
We already have a separate overview doc for this, makes sense to untangle it from the overall atomic helpers. v2: Rebase v3: Rebase more. Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181004202446.22905-4-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter
parent
297e30b5d9
commit
9ef8a9dc4b
6 changed files with 699 additions and 616 deletions
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@ -59,12 +59,6 @@ Implementing Asynchronous Atomic Commit
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
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:doc: implementing nonblocking commit
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:doc: implementing nonblocking commit
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Atomic State Reset and Initialization
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-------------------------------------
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
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:doc: atomic state reset and initialization
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Helper Functions Reference
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Helper Functions Reference
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--------------------------
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--------------------------
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@ -74,6 +68,21 @@ Helper Functions Reference
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_helper.c
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:export:
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:export:
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Atomic State Reset and Initialization
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-------------------------------------
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_state_helper.c
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:doc: atomic state reset and initialization
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Atomic State Helper Reference
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-----------------------------
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.. kernel-doc:: include/drm/drm_atomic_state_helper.h
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:internal:
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.. kernel-doc:: drivers/gpu/drm/drm_atomic_state_helper.c
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:export:
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Simple KMS Helper Reference
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Simple KMS Helper Reference
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===========================
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===========================
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@ -36,7 +36,8 @@ drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o \
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drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \
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drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \
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drm_kms_helper_common.o drm_dp_dual_mode_helper.o \
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drm_kms_helper_common.o drm_dp_dual_mode_helper.o \
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drm_simple_kms_helper.o drm_modeset_helper.o \
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drm_simple_kms_helper.o drm_modeset_helper.o \
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drm_scdc_helper.o drm_gem_framebuffer_helper.o
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drm_scdc_helper.o drm_gem_framebuffer_helper.o \
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drm_atomic_state_helper.o
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drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
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drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
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drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
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drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
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@ -3399,569 +3399,3 @@ int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc,
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return ret;
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return ret;
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}
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}
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EXPORT_SYMBOL(drm_atomic_helper_page_flip_target);
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EXPORT_SYMBOL(drm_atomic_helper_page_flip_target);
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/**
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* DOC: atomic state reset and initialization
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*
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* Both the drm core and the atomic helpers assume that there is always the full
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* and correct atomic software state for all connectors, CRTCs and planes
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* available. Which is a bit a problem on driver load and also after system
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* suspend. One way to solve this is to have a hardware state read-out
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* infrastructure which reconstructs the full software state (e.g. the i915
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* driver).
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*
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* The simpler solution is to just reset the software state to everything off,
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* which is easiest to do by calling drm_mode_config_reset(). To facilitate this
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* the atomic helpers provide default reset implementations for all hooks.
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*
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* On the upside the precise state tracking of atomic simplifies system suspend
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* and resume a lot. For drivers using drm_mode_config_reset() a complete recipe
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* is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume().
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* For other drivers the building blocks are split out, see the documentation
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* for these functions.
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*/
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/**
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* drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs
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* @crtc: drm CRTC
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*
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* Resets the atomic state for @crtc by freeing the state pointer (which might
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* be NULL, e.g. at driver load time) and allocating a new empty state object.
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*/
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void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc)
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{
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if (crtc->state)
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__drm_atomic_helper_crtc_destroy_state(crtc->state);
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kfree(crtc->state);
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crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL);
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if (crtc->state)
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crtc->state->crtc = crtc;
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}
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EXPORT_SYMBOL(drm_atomic_helper_crtc_reset);
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/**
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* __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state
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* @crtc: CRTC object
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* @state: atomic CRTC state
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*
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* Copies atomic state from a CRTC's current state and resets inferred values.
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* This is useful for drivers that subclass the CRTC state.
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*/
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void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
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struct drm_crtc_state *state)
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{
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memcpy(state, crtc->state, sizeof(*state));
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if (state->mode_blob)
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drm_property_blob_get(state->mode_blob);
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if (state->degamma_lut)
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drm_property_blob_get(state->degamma_lut);
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if (state->ctm)
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drm_property_blob_get(state->ctm);
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if (state->gamma_lut)
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drm_property_blob_get(state->gamma_lut);
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state->mode_changed = false;
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state->active_changed = false;
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state->planes_changed = false;
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state->connectors_changed = false;
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state->color_mgmt_changed = false;
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state->zpos_changed = false;
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state->commit = NULL;
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state->event = NULL;
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state->pageflip_flags = 0;
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}
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EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state);
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/**
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* drm_atomic_helper_crtc_duplicate_state - default state duplicate hook
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* @crtc: drm CRTC
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*
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* Default CRTC state duplicate hook for drivers which don't have their own
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* subclassed CRTC state structure.
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*/
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struct drm_crtc_state *
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drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc)
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{
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struct drm_crtc_state *state;
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if (WARN_ON(!crtc->state))
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return NULL;
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state = kmalloc(sizeof(*state), GFP_KERNEL);
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if (state)
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__drm_atomic_helper_crtc_duplicate_state(crtc, state);
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return state;
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}
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EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state);
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/**
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* __drm_atomic_helper_crtc_destroy_state - release CRTC state
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* @state: CRTC state object to release
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*
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* Releases all resources stored in the CRTC state without actually freeing
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* the memory of the CRTC state. This is useful for drivers that subclass the
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* CRTC state.
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*/
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void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state)
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{
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if (state->commit) {
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/*
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* In the event that a non-blocking commit returns
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* -ERESTARTSYS before the commit_tail work is queued, we will
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* have an extra reference to the commit object. Release it, if
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* the event has not been consumed by the worker.
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*
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* state->event may be freed, so we can't directly look at
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* state->event->base.completion.
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*/
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if (state->event && state->commit->abort_completion)
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drm_crtc_commit_put(state->commit);
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kfree(state->commit->event);
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state->commit->event = NULL;
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drm_crtc_commit_put(state->commit);
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}
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drm_property_blob_put(state->mode_blob);
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drm_property_blob_put(state->degamma_lut);
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drm_property_blob_put(state->ctm);
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drm_property_blob_put(state->gamma_lut);
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}
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EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state);
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/**
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* drm_atomic_helper_crtc_destroy_state - default state destroy hook
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* @crtc: drm CRTC
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* @state: CRTC state object to release
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*
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* Default CRTC state destroy hook for drivers which don't have their own
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* subclassed CRTC state structure.
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*/
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void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
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struct drm_crtc_state *state)
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{
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__drm_atomic_helper_crtc_destroy_state(state);
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kfree(state);
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}
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EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state);
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/**
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* __drm_atomic_helper_plane_reset - resets planes state to default values
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* @plane: plane object, must not be NULL
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* @state: atomic plane state, must not be NULL
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*
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* Initializes plane state to default. This is useful for drivers that subclass
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* the plane state.
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*/
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void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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state->plane = plane;
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state->rotation = DRM_MODE_ROTATE_0;
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state->alpha = DRM_BLEND_ALPHA_OPAQUE;
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state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
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plane->state = state;
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}
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EXPORT_SYMBOL(__drm_atomic_helper_plane_reset);
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/**
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* drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes
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* @plane: drm plane
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*
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* Resets the atomic state for @plane by freeing the state pointer (which might
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* be NULL, e.g. at driver load time) and allocating a new empty state object.
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*/
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void drm_atomic_helper_plane_reset(struct drm_plane *plane)
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{
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if (plane->state)
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__drm_atomic_helper_plane_destroy_state(plane->state);
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kfree(plane->state);
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plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL);
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if (plane->state)
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__drm_atomic_helper_plane_reset(plane, plane->state);
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}
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EXPORT_SYMBOL(drm_atomic_helper_plane_reset);
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/**
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* __drm_atomic_helper_plane_duplicate_state - copy atomic plane state
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* @plane: plane object
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* @state: atomic plane state
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*
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* Copies atomic state from a plane's current state. This is useful for
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* drivers that subclass the plane state.
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*/
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void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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memcpy(state, plane->state, sizeof(*state));
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if (state->fb)
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drm_framebuffer_get(state->fb);
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state->fence = NULL;
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state->commit = NULL;
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}
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EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state);
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/**
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* drm_atomic_helper_plane_duplicate_state - default state duplicate hook
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* @plane: drm plane
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*
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* Default plane state duplicate hook for drivers which don't have their own
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* subclassed plane state structure.
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*/
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struct drm_plane_state *
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drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane)
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{
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struct drm_plane_state *state;
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if (WARN_ON(!plane->state))
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return NULL;
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state = kmalloc(sizeof(*state), GFP_KERNEL);
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if (state)
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__drm_atomic_helper_plane_duplicate_state(plane, state);
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return state;
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}
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EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state);
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/**
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* __drm_atomic_helper_plane_destroy_state - release plane state
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* @state: plane state object to release
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*
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* Releases all resources stored in the plane state without actually freeing
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* the memory of the plane state. This is useful for drivers that subclass the
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* plane state.
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*/
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void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
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{
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if (state->fb)
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drm_framebuffer_put(state->fb);
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if (state->fence)
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dma_fence_put(state->fence);
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if (state->commit)
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drm_crtc_commit_put(state->commit);
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}
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EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state);
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/**
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* drm_atomic_helper_plane_destroy_state - default state destroy hook
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* @plane: drm plane
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* @state: plane state object to release
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*
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* Default plane state destroy hook for drivers which don't have their own
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* subclassed plane state structure.
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*/
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void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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__drm_atomic_helper_plane_destroy_state(state);
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kfree(state);
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}
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EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state);
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/**
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* __drm_atomic_helper_connector_reset - reset state on connector
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* @connector: drm connector
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* @conn_state: connector state to assign
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*
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* Initializes the newly allocated @conn_state and assigns it to
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* the &drm_conector->state pointer of @connector, usually required when
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* initializing the drivers or when called from the &drm_connector_funcs.reset
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* hook.
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*
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* This is useful for drivers that subclass the connector state.
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*/
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void
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__drm_atomic_helper_connector_reset(struct drm_connector *connector,
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struct drm_connector_state *conn_state)
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{
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if (conn_state)
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conn_state->connector = connector;
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connector->state = conn_state;
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}
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EXPORT_SYMBOL(__drm_atomic_helper_connector_reset);
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/**
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* drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors
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* @connector: drm connector
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*
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* Resets the atomic state for @connector by freeing the state pointer (which
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* might be NULL, e.g. at driver load time) and allocating a new empty state
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* object.
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*/
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void drm_atomic_helper_connector_reset(struct drm_connector *connector)
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{
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struct drm_connector_state *conn_state =
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kzalloc(sizeof(*conn_state), GFP_KERNEL);
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if (connector->state)
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__drm_atomic_helper_connector_destroy_state(connector->state);
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kfree(connector->state);
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__drm_atomic_helper_connector_reset(connector, conn_state);
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}
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EXPORT_SYMBOL(drm_atomic_helper_connector_reset);
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/**
|
|
||||||
* __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
|
|
||||||
* @connector: connector object
|
|
||||||
* @state: atomic connector state
|
|
||||||
*
|
|
||||||
* Copies atomic state from a connector's current state. This is useful for
|
|
||||||
* drivers that subclass the connector state.
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
|
|
||||||
struct drm_connector_state *state)
|
|
||||||
{
|
|
||||||
memcpy(state, connector->state, sizeof(*state));
|
|
||||||
if (state->crtc)
|
|
||||||
drm_connector_get(connector);
|
|
||||||
state->commit = NULL;
|
|
||||||
|
|
||||||
/* Don't copy over a writeback job, they are used only once */
|
|
||||||
state->writeback_job = NULL;
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_atomic_helper_connector_duplicate_state - default state duplicate hook
|
|
||||||
* @connector: drm connector
|
|
||||||
*
|
|
||||||
* Default connector state duplicate hook for drivers which don't have their own
|
|
||||||
* subclassed connector state structure.
|
|
||||||
*/
|
|
||||||
struct drm_connector_state *
|
|
||||||
drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector)
|
|
||||||
{
|
|
||||||
struct drm_connector_state *state;
|
|
||||||
|
|
||||||
if (WARN_ON(!connector->state))
|
|
||||||
return NULL;
|
|
||||||
|
|
||||||
state = kmalloc(sizeof(*state), GFP_KERNEL);
|
|
||||||
if (state)
|
|
||||||
__drm_atomic_helper_connector_duplicate_state(connector, state);
|
|
||||||
|
|
||||||
return state;
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_atomic_helper_duplicate_state - duplicate an atomic state object
|
|
||||||
* @dev: DRM device
|
|
||||||
* @ctx: lock acquisition context
|
|
||||||
*
|
|
||||||
* Makes a copy of the current atomic state by looping over all objects and
|
|
||||||
* duplicating their respective states. This is used for example by suspend/
|
|
||||||
* resume support code to save the state prior to suspend such that it can
|
|
||||||
* be restored upon resume.
|
|
||||||
*
|
|
||||||
* Note that this treats atomic state as persistent between save and restore.
|
|
||||||
* Drivers must make sure that this is possible and won't result in confusion
|
|
||||||
* or erroneous behaviour.
|
|
||||||
*
|
|
||||||
* Note that if callers haven't already acquired all modeset locks this might
|
|
||||||
* return -EDEADLK, which must be handled by calling drm_modeset_backoff().
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* A pointer to the copy of the atomic state object on success or an
|
|
||||||
* ERR_PTR()-encoded error code on failure.
|
|
||||||
*
|
|
||||||
* See also:
|
|
||||||
* drm_atomic_helper_suspend(), drm_atomic_helper_resume()
|
|
||||||
*/
|
|
||||||
struct drm_atomic_state *
|
|
||||||
drm_atomic_helper_duplicate_state(struct drm_device *dev,
|
|
||||||
struct drm_modeset_acquire_ctx *ctx)
|
|
||||||
{
|
|
||||||
struct drm_atomic_state *state;
|
|
||||||
struct drm_connector *conn;
|
|
||||||
struct drm_connector_list_iter conn_iter;
|
|
||||||
struct drm_plane *plane;
|
|
||||||
struct drm_crtc *crtc;
|
|
||||||
int err = 0;
|
|
||||||
|
|
||||||
state = drm_atomic_state_alloc(dev);
|
|
||||||
if (!state)
|
|
||||||
return ERR_PTR(-ENOMEM);
|
|
||||||
|
|
||||||
state->acquire_ctx = ctx;
|
|
||||||
|
|
||||||
drm_for_each_crtc(crtc, dev) {
|
|
||||||
struct drm_crtc_state *crtc_state;
|
|
||||||
|
|
||||||
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
||||||
if (IS_ERR(crtc_state)) {
|
|
||||||
err = PTR_ERR(crtc_state);
|
|
||||||
goto free;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
drm_for_each_plane(plane, dev) {
|
|
||||||
struct drm_plane_state *plane_state;
|
|
||||||
|
|
||||||
plane_state = drm_atomic_get_plane_state(state, plane);
|
|
||||||
if (IS_ERR(plane_state)) {
|
|
||||||
err = PTR_ERR(plane_state);
|
|
||||||
goto free;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
||||||
drm_for_each_connector_iter(conn, &conn_iter) {
|
|
||||||
struct drm_connector_state *conn_state;
|
|
||||||
|
|
||||||
conn_state = drm_atomic_get_connector_state(state, conn);
|
|
||||||
if (IS_ERR(conn_state)) {
|
|
||||||
err = PTR_ERR(conn_state);
|
|
||||||
drm_connector_list_iter_end(&conn_iter);
|
|
||||||
goto free;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
drm_connector_list_iter_end(&conn_iter);
|
|
||||||
|
|
||||||
/* clear the acquire context so that it isn't accidentally reused */
|
|
||||||
state->acquire_ctx = NULL;
|
|
||||||
|
|
||||||
free:
|
|
||||||
if (err < 0) {
|
|
||||||
drm_atomic_state_put(state);
|
|
||||||
state = ERR_PTR(err);
|
|
||||||
}
|
|
||||||
|
|
||||||
return state;
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* __drm_atomic_helper_connector_destroy_state - release connector state
|
|
||||||
* @state: connector state object to release
|
|
||||||
*
|
|
||||||
* Releases all resources stored in the connector state without actually
|
|
||||||
* freeing the memory of the connector state. This is useful for drivers that
|
|
||||||
* subclass the connector state.
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state)
|
|
||||||
{
|
|
||||||
if (state->crtc)
|
|
||||||
drm_connector_put(state->connector);
|
|
||||||
|
|
||||||
if (state->commit)
|
|
||||||
drm_crtc_commit_put(state->commit);
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_atomic_helper_connector_destroy_state - default state destroy hook
|
|
||||||
* @connector: drm connector
|
|
||||||
* @state: connector state object to release
|
|
||||||
*
|
|
||||||
* Default connector state destroy hook for drivers which don't have their own
|
|
||||||
* subclassed connector state structure.
|
|
||||||
*/
|
|
||||||
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
|
|
||||||
struct drm_connector_state *state)
|
|
||||||
{
|
|
||||||
__drm_atomic_helper_connector_destroy_state(state);
|
|
||||||
kfree(state);
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table
|
|
||||||
* @crtc: CRTC object
|
|
||||||
* @red: red correction table
|
|
||||||
* @green: green correction table
|
|
||||||
* @blue: green correction table
|
|
||||||
* @size: size of the tables
|
|
||||||
* @ctx: lock acquire context
|
|
||||||
*
|
|
||||||
* Implements support for legacy gamma correction table for drivers
|
|
||||||
* that support color management through the DEGAMMA_LUT/GAMMA_LUT
|
|
||||||
* properties. See drm_crtc_enable_color_mgmt() and the containing chapter for
|
|
||||||
* how the atomic color management and gamma tables work.
|
|
||||||
*/
|
|
||||||
int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
|
|
||||||
u16 *red, u16 *green, u16 *blue,
|
|
||||||
uint32_t size,
|
|
||||||
struct drm_modeset_acquire_ctx *ctx)
|
|
||||||
{
|
|
||||||
struct drm_device *dev = crtc->dev;
|
|
||||||
struct drm_atomic_state *state;
|
|
||||||
struct drm_crtc_state *crtc_state;
|
|
||||||
struct drm_property_blob *blob = NULL;
|
|
||||||
struct drm_color_lut *blob_data;
|
|
||||||
int i, ret = 0;
|
|
||||||
bool replaced;
|
|
||||||
|
|
||||||
state = drm_atomic_state_alloc(crtc->dev);
|
|
||||||
if (!state)
|
|
||||||
return -ENOMEM;
|
|
||||||
|
|
||||||
blob = drm_property_create_blob(dev,
|
|
||||||
sizeof(struct drm_color_lut) * size,
|
|
||||||
NULL);
|
|
||||||
if (IS_ERR(blob)) {
|
|
||||||
ret = PTR_ERR(blob);
|
|
||||||
blob = NULL;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Prepare GAMMA_LUT with the legacy values. */
|
|
||||||
blob_data = blob->data;
|
|
||||||
for (i = 0; i < size; i++) {
|
|
||||||
blob_data[i].red = red[i];
|
|
||||||
blob_data[i].green = green[i];
|
|
||||||
blob_data[i].blue = blue[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
state->acquire_ctx = ctx;
|
|
||||||
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
||||||
if (IS_ERR(crtc_state)) {
|
|
||||||
ret = PTR_ERR(crtc_state);
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Reset DEGAMMA_LUT and CTM properties. */
|
|
||||||
replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL);
|
|
||||||
replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
|
|
||||||
replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob);
|
|
||||||
crtc_state->color_mgmt_changed |= replaced;
|
|
||||||
|
|
||||||
ret = drm_atomic_commit(state);
|
|
||||||
|
|
||||||
fail:
|
|
||||||
drm_atomic_state_put(state);
|
|
||||||
drm_property_blob_put(blob);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* __drm_atomic_helper_private_duplicate_state - copy atomic private state
|
|
||||||
* @obj: CRTC object
|
|
||||||
* @state: new private object state
|
|
||||||
*
|
|
||||||
* Copies atomic state from a private objects's current state and resets inferred values.
|
|
||||||
* This is useful for drivers that subclass the private state.
|
|
||||||
*/
|
|
||||||
void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
|
|
||||||
struct drm_private_state *state)
|
|
||||||
{
|
|
||||||
memcpy(state, obj->state, sizeof(*state));
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(__drm_atomic_helper_private_obj_duplicate_state);
|
|
||||||
|
|
|
||||||
601
drivers/gpu/drm/drm_atomic_state_helper.c
Normal file
601
drivers/gpu/drm/drm_atomic_state_helper.c
Normal file
|
|
@ -0,0 +1,601 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2018 Intel Corp.
|
||||||
|
*
|
||||||
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||||
|
* copy of this software and associated documentation files (the "Software"),
|
||||||
|
* to deal in the Software without restriction, including without limitation
|
||||||
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||||
|
* and/or sell copies of the Software, and to permit persons to whom the
|
||||||
|
* Software is furnished to do so, subject to the following conditions:
|
||||||
|
*
|
||||||
|
* The above copyright notice and this permission notice shall be included in
|
||||||
|
* all copies or substantial portions of the Software.
|
||||||
|
*
|
||||||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||||
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||||
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||||
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||||
|
* OTHER DEALINGS IN THE SOFTWARE.
|
||||||
|
*
|
||||||
|
* Authors:
|
||||||
|
* Rob Clark <robdclark@gmail.com>
|
||||||
|
* Daniel Vetter <daniel.vetter@ffwll.ch>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <drm/drm_atomic_state_helper.h>
|
||||||
|
#include <drm/drm_crtc.h>
|
||||||
|
#include <drm/drm_plane.h>
|
||||||
|
#include <drm/drm_connector.h>
|
||||||
|
#include <drm/drm_atomic.h>
|
||||||
|
#include <drm/drm_device.h>
|
||||||
|
|
||||||
|
#include <linux/slab.h>
|
||||||
|
#include <linux/dma-fence.h>
|
||||||
|
|
||||||
|
/**
|
||||||
|
* DOC: atomic state reset and initialization
|
||||||
|
*
|
||||||
|
* Both the drm core and the atomic helpers assume that there is always the full
|
||||||
|
* and correct atomic software state for all connectors, CRTCs and planes
|
||||||
|
* available. Which is a bit a problem on driver load and also after system
|
||||||
|
* suspend. One way to solve this is to have a hardware state read-out
|
||||||
|
* infrastructure which reconstructs the full software state (e.g. the i915
|
||||||
|
* driver).
|
||||||
|
*
|
||||||
|
* The simpler solution is to just reset the software state to everything off,
|
||||||
|
* which is easiest to do by calling drm_mode_config_reset(). To facilitate this
|
||||||
|
* the atomic helpers provide default reset implementations for all hooks.
|
||||||
|
*
|
||||||
|
* On the upside the precise state tracking of atomic simplifies system suspend
|
||||||
|
* and resume a lot. For drivers using drm_mode_config_reset() a complete recipe
|
||||||
|
* is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume().
|
||||||
|
* For other drivers the building blocks are split out, see the documentation
|
||||||
|
* for these functions.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs
|
||||||
|
* @crtc: drm CRTC
|
||||||
|
*
|
||||||
|
* Resets the atomic state for @crtc by freeing the state pointer (which might
|
||||||
|
* be NULL, e.g. at driver load time) and allocating a new empty state object.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc)
|
||||||
|
{
|
||||||
|
if (crtc->state)
|
||||||
|
__drm_atomic_helper_crtc_destroy_state(crtc->state);
|
||||||
|
|
||||||
|
kfree(crtc->state);
|
||||||
|
crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL);
|
||||||
|
|
||||||
|
if (crtc->state)
|
||||||
|
crtc->state->crtc = crtc;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_crtc_reset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state
|
||||||
|
* @crtc: CRTC object
|
||||||
|
* @state: atomic CRTC state
|
||||||
|
*
|
||||||
|
* Copies atomic state from a CRTC's current state and resets inferred values.
|
||||||
|
* This is useful for drivers that subclass the CRTC state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
|
||||||
|
struct drm_crtc_state *state)
|
||||||
|
{
|
||||||
|
memcpy(state, crtc->state, sizeof(*state));
|
||||||
|
|
||||||
|
if (state->mode_blob)
|
||||||
|
drm_property_blob_get(state->mode_blob);
|
||||||
|
if (state->degamma_lut)
|
||||||
|
drm_property_blob_get(state->degamma_lut);
|
||||||
|
if (state->ctm)
|
||||||
|
drm_property_blob_get(state->ctm);
|
||||||
|
if (state->gamma_lut)
|
||||||
|
drm_property_blob_get(state->gamma_lut);
|
||||||
|
state->mode_changed = false;
|
||||||
|
state->active_changed = false;
|
||||||
|
state->planes_changed = false;
|
||||||
|
state->connectors_changed = false;
|
||||||
|
state->color_mgmt_changed = false;
|
||||||
|
state->zpos_changed = false;
|
||||||
|
state->commit = NULL;
|
||||||
|
state->event = NULL;
|
||||||
|
state->pageflip_flags = 0;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_crtc_duplicate_state - default state duplicate hook
|
||||||
|
* @crtc: drm CRTC
|
||||||
|
*
|
||||||
|
* Default CRTC state duplicate hook for drivers which don't have their own
|
||||||
|
* subclassed CRTC state structure.
|
||||||
|
*/
|
||||||
|
struct drm_crtc_state *
|
||||||
|
drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc)
|
||||||
|
{
|
||||||
|
struct drm_crtc_state *state;
|
||||||
|
|
||||||
|
if (WARN_ON(!crtc->state))
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
state = kmalloc(sizeof(*state), GFP_KERNEL);
|
||||||
|
if (state)
|
||||||
|
__drm_atomic_helper_crtc_duplicate_state(crtc, state);
|
||||||
|
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_crtc_destroy_state - release CRTC state
|
||||||
|
* @state: CRTC state object to release
|
||||||
|
*
|
||||||
|
* Releases all resources stored in the CRTC state without actually freeing
|
||||||
|
* the memory of the CRTC state. This is useful for drivers that subclass the
|
||||||
|
* CRTC state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state)
|
||||||
|
{
|
||||||
|
if (state->commit) {
|
||||||
|
/*
|
||||||
|
* In the event that a non-blocking commit returns
|
||||||
|
* -ERESTARTSYS before the commit_tail work is queued, we will
|
||||||
|
* have an extra reference to the commit object. Release it, if
|
||||||
|
* the event has not been consumed by the worker.
|
||||||
|
*
|
||||||
|
* state->event may be freed, so we can't directly look at
|
||||||
|
* state->event->base.completion.
|
||||||
|
*/
|
||||||
|
if (state->event && state->commit->abort_completion)
|
||||||
|
drm_crtc_commit_put(state->commit);
|
||||||
|
|
||||||
|
kfree(state->commit->event);
|
||||||
|
state->commit->event = NULL;
|
||||||
|
|
||||||
|
drm_crtc_commit_put(state->commit);
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_property_blob_put(state->mode_blob);
|
||||||
|
drm_property_blob_put(state->degamma_lut);
|
||||||
|
drm_property_blob_put(state->ctm);
|
||||||
|
drm_property_blob_put(state->gamma_lut);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_crtc_destroy_state - default state destroy hook
|
||||||
|
* @crtc: drm CRTC
|
||||||
|
* @state: CRTC state object to release
|
||||||
|
*
|
||||||
|
* Default CRTC state destroy hook for drivers which don't have their own
|
||||||
|
* subclassed CRTC state structure.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
|
||||||
|
struct drm_crtc_state *state)
|
||||||
|
{
|
||||||
|
__drm_atomic_helper_crtc_destroy_state(state);
|
||||||
|
kfree(state);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_plane_reset - resets planes state to default values
|
||||||
|
* @plane: plane object, must not be NULL
|
||||||
|
* @state: atomic plane state, must not be NULL
|
||||||
|
*
|
||||||
|
* Initializes plane state to default. This is useful for drivers that subclass
|
||||||
|
* the plane state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state)
|
||||||
|
{
|
||||||
|
state->plane = plane;
|
||||||
|
state->rotation = DRM_MODE_ROTATE_0;
|
||||||
|
|
||||||
|
state->alpha = DRM_BLEND_ALPHA_OPAQUE;
|
||||||
|
state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
|
||||||
|
|
||||||
|
plane->state = state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_plane_reset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes
|
||||||
|
* @plane: drm plane
|
||||||
|
*
|
||||||
|
* Resets the atomic state for @plane by freeing the state pointer (which might
|
||||||
|
* be NULL, e.g. at driver load time) and allocating a new empty state object.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_plane_reset(struct drm_plane *plane)
|
||||||
|
{
|
||||||
|
if (plane->state)
|
||||||
|
__drm_atomic_helper_plane_destroy_state(plane->state);
|
||||||
|
|
||||||
|
kfree(plane->state);
|
||||||
|
plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL);
|
||||||
|
if (plane->state)
|
||||||
|
__drm_atomic_helper_plane_reset(plane, plane->state);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_plane_reset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_plane_duplicate_state - copy atomic plane state
|
||||||
|
* @plane: plane object
|
||||||
|
* @state: atomic plane state
|
||||||
|
*
|
||||||
|
* Copies atomic state from a plane's current state. This is useful for
|
||||||
|
* drivers that subclass the plane state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state)
|
||||||
|
{
|
||||||
|
memcpy(state, plane->state, sizeof(*state));
|
||||||
|
|
||||||
|
if (state->fb)
|
||||||
|
drm_framebuffer_get(state->fb);
|
||||||
|
|
||||||
|
state->fence = NULL;
|
||||||
|
state->commit = NULL;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_plane_duplicate_state - default state duplicate hook
|
||||||
|
* @plane: drm plane
|
||||||
|
*
|
||||||
|
* Default plane state duplicate hook for drivers which don't have their own
|
||||||
|
* subclassed plane state structure.
|
||||||
|
*/
|
||||||
|
struct drm_plane_state *
|
||||||
|
drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane)
|
||||||
|
{
|
||||||
|
struct drm_plane_state *state;
|
||||||
|
|
||||||
|
if (WARN_ON(!plane->state))
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
state = kmalloc(sizeof(*state), GFP_KERNEL);
|
||||||
|
if (state)
|
||||||
|
__drm_atomic_helper_plane_duplicate_state(plane, state);
|
||||||
|
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_plane_destroy_state - release plane state
|
||||||
|
* @state: plane state object to release
|
||||||
|
*
|
||||||
|
* Releases all resources stored in the plane state without actually freeing
|
||||||
|
* the memory of the plane state. This is useful for drivers that subclass the
|
||||||
|
* plane state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
|
||||||
|
{
|
||||||
|
if (state->fb)
|
||||||
|
drm_framebuffer_put(state->fb);
|
||||||
|
|
||||||
|
if (state->fence)
|
||||||
|
dma_fence_put(state->fence);
|
||||||
|
|
||||||
|
if (state->commit)
|
||||||
|
drm_crtc_commit_put(state->commit);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_plane_destroy_state - default state destroy hook
|
||||||
|
* @plane: drm plane
|
||||||
|
* @state: plane state object to release
|
||||||
|
*
|
||||||
|
* Default plane state destroy hook for drivers which don't have their own
|
||||||
|
* subclassed plane state structure.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state)
|
||||||
|
{
|
||||||
|
__drm_atomic_helper_plane_destroy_state(state);
|
||||||
|
kfree(state);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_connector_reset - reset state on connector
|
||||||
|
* @connector: drm connector
|
||||||
|
* @conn_state: connector state to assign
|
||||||
|
*
|
||||||
|
* Initializes the newly allocated @conn_state and assigns it to
|
||||||
|
* the &drm_conector->state pointer of @connector, usually required when
|
||||||
|
* initializing the drivers or when called from the &drm_connector_funcs.reset
|
||||||
|
* hook.
|
||||||
|
*
|
||||||
|
* This is useful for drivers that subclass the connector state.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
__drm_atomic_helper_connector_reset(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *conn_state)
|
||||||
|
{
|
||||||
|
if (conn_state)
|
||||||
|
conn_state->connector = connector;
|
||||||
|
|
||||||
|
connector->state = conn_state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_connector_reset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors
|
||||||
|
* @connector: drm connector
|
||||||
|
*
|
||||||
|
* Resets the atomic state for @connector by freeing the state pointer (which
|
||||||
|
* might be NULL, e.g. at driver load time) and allocating a new empty state
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_connector_reset(struct drm_connector *connector)
|
||||||
|
{
|
||||||
|
struct drm_connector_state *conn_state =
|
||||||
|
kzalloc(sizeof(*conn_state), GFP_KERNEL);
|
||||||
|
|
||||||
|
if (connector->state)
|
||||||
|
__drm_atomic_helper_connector_destroy_state(connector->state);
|
||||||
|
|
||||||
|
kfree(connector->state);
|
||||||
|
__drm_atomic_helper_connector_reset(connector, conn_state);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_connector_reset);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
|
||||||
|
* @connector: connector object
|
||||||
|
* @state: atomic connector state
|
||||||
|
*
|
||||||
|
* Copies atomic state from a connector's current state. This is useful for
|
||||||
|
* drivers that subclass the connector state.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *state)
|
||||||
|
{
|
||||||
|
memcpy(state, connector->state, sizeof(*state));
|
||||||
|
if (state->crtc)
|
||||||
|
drm_connector_get(connector);
|
||||||
|
state->commit = NULL;
|
||||||
|
|
||||||
|
/* Don't copy over a writeback job, they are used only once */
|
||||||
|
state->writeback_job = NULL;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_connector_duplicate_state - default state duplicate hook
|
||||||
|
* @connector: drm connector
|
||||||
|
*
|
||||||
|
* Default connector state duplicate hook for drivers which don't have their own
|
||||||
|
* subclassed connector state structure.
|
||||||
|
*/
|
||||||
|
struct drm_connector_state *
|
||||||
|
drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector)
|
||||||
|
{
|
||||||
|
struct drm_connector_state *state;
|
||||||
|
|
||||||
|
if (WARN_ON(!connector->state))
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
state = kmalloc(sizeof(*state), GFP_KERNEL);
|
||||||
|
if (state)
|
||||||
|
__drm_atomic_helper_connector_duplicate_state(connector, state);
|
||||||
|
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_duplicate_state - duplicate an atomic state object
|
||||||
|
* @dev: DRM device
|
||||||
|
* @ctx: lock acquisition context
|
||||||
|
*
|
||||||
|
* Makes a copy of the current atomic state by looping over all objects and
|
||||||
|
* duplicating their respective states. This is used for example by suspend/
|
||||||
|
* resume support code to save the state prior to suspend such that it can
|
||||||
|
* be restored upon resume.
|
||||||
|
*
|
||||||
|
* Note that this treats atomic state as persistent between save and restore.
|
||||||
|
* Drivers must make sure that this is possible and won't result in confusion
|
||||||
|
* or erroneous behaviour.
|
||||||
|
*
|
||||||
|
* Note that if callers haven't already acquired all modeset locks this might
|
||||||
|
* return -EDEADLK, which must be handled by calling drm_modeset_backoff().
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* A pointer to the copy of the atomic state object on success or an
|
||||||
|
* ERR_PTR()-encoded error code on failure.
|
||||||
|
*
|
||||||
|
* See also:
|
||||||
|
* drm_atomic_helper_suspend(), drm_atomic_helper_resume()
|
||||||
|
*/
|
||||||
|
struct drm_atomic_state *
|
||||||
|
drm_atomic_helper_duplicate_state(struct drm_device *dev,
|
||||||
|
struct drm_modeset_acquire_ctx *ctx)
|
||||||
|
{
|
||||||
|
struct drm_atomic_state *state;
|
||||||
|
struct drm_connector *conn;
|
||||||
|
struct drm_connector_list_iter conn_iter;
|
||||||
|
struct drm_plane *plane;
|
||||||
|
struct drm_crtc *crtc;
|
||||||
|
int err = 0;
|
||||||
|
|
||||||
|
state = drm_atomic_state_alloc(dev);
|
||||||
|
if (!state)
|
||||||
|
return ERR_PTR(-ENOMEM);
|
||||||
|
|
||||||
|
state->acquire_ctx = ctx;
|
||||||
|
|
||||||
|
drm_for_each_crtc(crtc, dev) {
|
||||||
|
struct drm_crtc_state *crtc_state;
|
||||||
|
|
||||||
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
||||||
|
if (IS_ERR(crtc_state)) {
|
||||||
|
err = PTR_ERR(crtc_state);
|
||||||
|
goto free;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_for_each_plane(plane, dev) {
|
||||||
|
struct drm_plane_state *plane_state;
|
||||||
|
|
||||||
|
plane_state = drm_atomic_get_plane_state(state, plane);
|
||||||
|
if (IS_ERR(plane_state)) {
|
||||||
|
err = PTR_ERR(plane_state);
|
||||||
|
goto free;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
||||||
|
drm_for_each_connector_iter(conn, &conn_iter) {
|
||||||
|
struct drm_connector_state *conn_state;
|
||||||
|
|
||||||
|
conn_state = drm_atomic_get_connector_state(state, conn);
|
||||||
|
if (IS_ERR(conn_state)) {
|
||||||
|
err = PTR_ERR(conn_state);
|
||||||
|
drm_connector_list_iter_end(&conn_iter);
|
||||||
|
goto free;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
drm_connector_list_iter_end(&conn_iter);
|
||||||
|
|
||||||
|
/* clear the acquire context so that it isn't accidentally reused */
|
||||||
|
state->acquire_ctx = NULL;
|
||||||
|
|
||||||
|
free:
|
||||||
|
if (err < 0) {
|
||||||
|
drm_atomic_state_put(state);
|
||||||
|
state = ERR_PTR(err);
|
||||||
|
}
|
||||||
|
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_connector_destroy_state - release connector state
|
||||||
|
* @state: connector state object to release
|
||||||
|
*
|
||||||
|
* Releases all resources stored in the connector state without actually
|
||||||
|
* freeing the memory of the connector state. This is useful for drivers that
|
||||||
|
* subclass the connector state.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state)
|
||||||
|
{
|
||||||
|
if (state->crtc)
|
||||||
|
drm_connector_put(state->connector);
|
||||||
|
|
||||||
|
if (state->commit)
|
||||||
|
drm_crtc_commit_put(state->commit);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_connector_destroy_state - default state destroy hook
|
||||||
|
* @connector: drm connector
|
||||||
|
* @state: connector state object to release
|
||||||
|
*
|
||||||
|
* Default connector state destroy hook for drivers which don't have their own
|
||||||
|
* subclassed connector state structure.
|
||||||
|
*/
|
||||||
|
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *state)
|
||||||
|
{
|
||||||
|
__drm_atomic_helper_connector_destroy_state(state);
|
||||||
|
kfree(state);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table
|
||||||
|
* @crtc: CRTC object
|
||||||
|
* @red: red correction table
|
||||||
|
* @green: green correction table
|
||||||
|
* @blue: green correction table
|
||||||
|
* @size: size of the tables
|
||||||
|
* @ctx: lock acquire context
|
||||||
|
*
|
||||||
|
* Implements support for legacy gamma correction table for drivers
|
||||||
|
* that support color management through the DEGAMMA_LUT/GAMMA_LUT
|
||||||
|
* properties. See drm_crtc_enable_color_mgmt() and the containing chapter for
|
||||||
|
* how the atomic color management and gamma tables work.
|
||||||
|
*/
|
||||||
|
int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
|
||||||
|
u16 *red, u16 *green, u16 *blue,
|
||||||
|
uint32_t size,
|
||||||
|
struct drm_modeset_acquire_ctx *ctx)
|
||||||
|
{
|
||||||
|
struct drm_device *dev = crtc->dev;
|
||||||
|
struct drm_atomic_state *state;
|
||||||
|
struct drm_crtc_state *crtc_state;
|
||||||
|
struct drm_property_blob *blob = NULL;
|
||||||
|
struct drm_color_lut *blob_data;
|
||||||
|
int i, ret = 0;
|
||||||
|
bool replaced;
|
||||||
|
|
||||||
|
state = drm_atomic_state_alloc(crtc->dev);
|
||||||
|
if (!state)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
blob = drm_property_create_blob(dev,
|
||||||
|
sizeof(struct drm_color_lut) * size,
|
||||||
|
NULL);
|
||||||
|
if (IS_ERR(blob)) {
|
||||||
|
ret = PTR_ERR(blob);
|
||||||
|
blob = NULL;
|
||||||
|
goto fail;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Prepare GAMMA_LUT with the legacy values. */
|
||||||
|
blob_data = blob->data;
|
||||||
|
for (i = 0; i < size; i++) {
|
||||||
|
blob_data[i].red = red[i];
|
||||||
|
blob_data[i].green = green[i];
|
||||||
|
blob_data[i].blue = blue[i];
|
||||||
|
}
|
||||||
|
|
||||||
|
state->acquire_ctx = ctx;
|
||||||
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
||||||
|
if (IS_ERR(crtc_state)) {
|
||||||
|
ret = PTR_ERR(crtc_state);
|
||||||
|
goto fail;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Reset DEGAMMA_LUT and CTM properties. */
|
||||||
|
replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL);
|
||||||
|
replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
|
||||||
|
replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob);
|
||||||
|
crtc_state->color_mgmt_changed |= replaced;
|
||||||
|
|
||||||
|
ret = drm_atomic_commit(state);
|
||||||
|
|
||||||
|
fail:
|
||||||
|
drm_atomic_state_put(state);
|
||||||
|
drm_property_blob_put(blob);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* __drm_atomic_helper_private_duplicate_state - copy atomic private state
|
||||||
|
* @obj: CRTC object
|
||||||
|
* @state: new private object state
|
||||||
|
*
|
||||||
|
* Copies atomic state from a private objects's current state and resets inferred values.
|
||||||
|
* This is useful for drivers that subclass the private state.
|
||||||
|
*/
|
||||||
|
void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
|
||||||
|
struct drm_private_state *state)
|
||||||
|
{
|
||||||
|
memcpy(state, obj->state, sizeof(*state));
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(__drm_atomic_helper_private_obj_duplicate_state);
|
||||||
|
|
@ -31,6 +31,7 @@
|
||||||
#include <drm/drm_crtc.h>
|
#include <drm/drm_crtc.h>
|
||||||
#include <drm/drm_modeset_helper_vtables.h>
|
#include <drm/drm_modeset_helper_vtables.h>
|
||||||
#include <drm/drm_modeset_helper.h>
|
#include <drm/drm_modeset_helper.h>
|
||||||
|
#include <drm/drm_atomic_state_helper.h>
|
||||||
#include <drm/drm_util.h>
|
#include <drm/drm_util.h>
|
||||||
|
|
||||||
struct drm_atomic_state;
|
struct drm_atomic_state;
|
||||||
|
|
@ -145,49 +146,6 @@ int drm_atomic_helper_page_flip_target(
|
||||||
uint32_t target,
|
uint32_t target,
|
||||||
struct drm_modeset_acquire_ctx *ctx);
|
struct drm_modeset_acquire_ctx *ctx);
|
||||||
|
|
||||||
/* default implementations for state handling */
|
|
||||||
void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);
|
|
||||||
void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
|
|
||||||
struct drm_crtc_state *state);
|
|
||||||
struct drm_crtc_state *
|
|
||||||
drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc);
|
|
||||||
void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state);
|
|
||||||
void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
|
|
||||||
struct drm_crtc_state *state);
|
|
||||||
|
|
||||||
void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
|
|
||||||
struct drm_plane_state *state);
|
|
||||||
void drm_atomic_helper_plane_reset(struct drm_plane *plane);
|
|
||||||
void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
|
|
||||||
struct drm_plane_state *state);
|
|
||||||
struct drm_plane_state *
|
|
||||||
drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane);
|
|
||||||
void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state);
|
|
||||||
void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
|
|
||||||
struct drm_plane_state *state);
|
|
||||||
|
|
||||||
void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
|
|
||||||
struct drm_connector_state *conn_state);
|
|
||||||
void drm_atomic_helper_connector_reset(struct drm_connector *connector);
|
|
||||||
void
|
|
||||||
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
|
|
||||||
struct drm_connector_state *state);
|
|
||||||
struct drm_connector_state *
|
|
||||||
drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);
|
|
||||||
struct drm_atomic_state *
|
|
||||||
drm_atomic_helper_duplicate_state(struct drm_device *dev,
|
|
||||||
struct drm_modeset_acquire_ctx *ctx);
|
|
||||||
void
|
|
||||||
__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state);
|
|
||||||
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
|
|
||||||
struct drm_connector_state *state);
|
|
||||||
int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
|
|
||||||
u16 *red, u16 *green, u16 *blue,
|
|
||||||
uint32_t size,
|
|
||||||
struct drm_modeset_acquire_ctx *ctx);
|
|
||||||
void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
|
|
||||||
struct drm_private_state *state);
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
|
* drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
|
||||||
* @plane: the loop cursor
|
* @plane: the loop cursor
|
||||||
|
|
|
||||||
80
include/drm/drm_atomic_state_helper.h
Normal file
80
include/drm/drm_atomic_state_helper.h
Normal file
|
|
@ -0,0 +1,80 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2018 Intel Corp.
|
||||||
|
*
|
||||||
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||||
|
* copy of this software and associated documentation files (the "Software"),
|
||||||
|
* to deal in the Software without restriction, including without limitation
|
||||||
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||||
|
* and/or sell copies of the Software, and to permit persons to whom the
|
||||||
|
* Software is furnished to do so, subject to the following conditions:
|
||||||
|
*
|
||||||
|
* The above copyright notice and this permission notice shall be included in
|
||||||
|
* all copies or substantial portions of the Software.
|
||||||
|
*
|
||||||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||||
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||||
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||||
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||||
|
* OTHER DEALINGS IN THE SOFTWARE.
|
||||||
|
*
|
||||||
|
* Authors:
|
||||||
|
* Rob Clark <robdclark@gmail.com>
|
||||||
|
* Daniel Vetter <daniel.vetter@ffwll.ch>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/types.h>
|
||||||
|
|
||||||
|
struct drm_crtc;
|
||||||
|
struct drm_crtc_state;
|
||||||
|
struct drm_plane;
|
||||||
|
struct drm_plane_state;
|
||||||
|
struct drm_connector;
|
||||||
|
struct drm_connector_state;
|
||||||
|
struct drm_private_obj;
|
||||||
|
struct drm_private_state;
|
||||||
|
struct drm_modeset_acquire_ctx;
|
||||||
|
struct drm_device;
|
||||||
|
|
||||||
|
void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);
|
||||||
|
void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
|
||||||
|
struct drm_crtc_state *state);
|
||||||
|
struct drm_crtc_state *
|
||||||
|
drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc);
|
||||||
|
void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state);
|
||||||
|
void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
|
||||||
|
struct drm_crtc_state *state);
|
||||||
|
|
||||||
|
void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state);
|
||||||
|
void drm_atomic_helper_plane_reset(struct drm_plane *plane);
|
||||||
|
void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state);
|
||||||
|
struct drm_plane_state *
|
||||||
|
drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane);
|
||||||
|
void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state);
|
||||||
|
void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
|
||||||
|
struct drm_plane_state *state);
|
||||||
|
|
||||||
|
void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *conn_state);
|
||||||
|
void drm_atomic_helper_connector_reset(struct drm_connector *connector);
|
||||||
|
void
|
||||||
|
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *state);
|
||||||
|
struct drm_connector_state *
|
||||||
|
drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);
|
||||||
|
struct drm_atomic_state *
|
||||||
|
drm_atomic_helper_duplicate_state(struct drm_device *dev,
|
||||||
|
struct drm_modeset_acquire_ctx *ctx);
|
||||||
|
void
|
||||||
|
__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state);
|
||||||
|
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
|
||||||
|
struct drm_connector_state *state);
|
||||||
|
int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
|
||||||
|
u16 *red, u16 *green, u16 *blue,
|
||||||
|
uint32_t size,
|
||||||
|
struct drm_modeset_acquire_ctx *ctx);
|
||||||
|
void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
|
||||||
|
struct drm_private_state *state);
|
||||||
Loading…
Reference in a new issue