| /* |
| * Copyright (C) 2014 Red Hat |
| * Copyright (C) 2014 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> |
| */ |
| |
| #ifndef DRM_ATOMIC_HELPER_H_ |
| #define DRM_ATOMIC_HELPER_H_ |
| |
| #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, |
| struct drm_atomic_state *state, |
| bool async); |
| |
| void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, |
| struct drm_atomic_state *old_state); |
| |
| void |
| drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, |
| struct drm_atomic_state *old_state); |
| |
| void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
| struct drm_atomic_state *state); |
| void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
| struct drm_atomic_state *old_state); |
| |
| int drm_atomic_helper_prepare_planes(struct drm_device *dev, |
| struct drm_atomic_state *state); |
| void drm_atomic_helper_commit_planes(struct drm_device *dev, |
| struct drm_atomic_state *state); |
| void drm_atomic_helper_cleanup_planes(struct drm_device *dev, |
| struct drm_atomic_state *old_state); |
| void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state); |
| |
| void drm_atomic_helper_swap_state(struct drm_device *dev, |
| struct drm_atomic_state *state); |
| |
| /* implementations for legacy interfaces */ |
| int drm_atomic_helper_update_plane(struct drm_plane *plane, |
| struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| int crtc_x, int crtc_y, |
| unsigned int crtc_w, unsigned int crtc_h, |
| uint32_t src_x, uint32_t src_y, |
| uint32_t src_w, uint32_t src_h); |
| int drm_atomic_helper_disable_plane(struct drm_plane *plane); |
| int drm_atomic_helper_set_config(struct drm_mode_set *set); |
| |
| int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, |
| struct drm_property *property, |
| uint64_t val); |
| int drm_atomic_helper_plane_set_property(struct drm_plane *plane, |
| struct drm_property *property, |
| uint64_t val); |
| int drm_atomic_helper_connector_set_property(struct drm_connector *connector, |
| struct drm_property *property, |
| uint64_t val); |
| int drm_atomic_helper_page_flip(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| struct drm_pending_vblank_event *event, |
| uint32_t flags); |
| int drm_atomic_helper_connector_dpms(struct drm_connector *connector, |
| int mode); |
| |
| /* 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 *crtc, |
| 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); |
| 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 *plane, |
| 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); |
| 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); |
| void |
| __drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, |
| struct drm_connector_state *state); |
| void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, |
| struct drm_connector_state *state); |
| |
| /** |
| * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC |
| * @plane: the loop cursor |
| * @crtc: the crtc whose planes are iterated |
| * |
| * This iterates over the current state, useful (for example) when applying |
| * atomic state after it has been checked and swapped. To iterate over the |
| * planes which *will* be attached (for ->atomic_check()) see |
| * drm_crtc_for_each_pending_plane() |
| */ |
| #define drm_atomic_crtc_for_each_plane(plane, crtc) \ |
| drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask) |
| |
| /** |
| * drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state |
| * @plane: the loop cursor |
| * @crtc_state: the incoming crtc-state |
| * |
| * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be |
| * attached if the specified state is applied. Useful during (for example) |
| * ->atomic_check() operations, to validate the incoming state |
| */ |
| #define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \ |
| drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask) |
| |
| /* |
| * drm_atomic_plane_disabling - check whether a plane is being disabled |
| * @plane: plane object |
| * @old_state: previous atomic state |
| * |
| * Checks the atomic state of a plane to determine whether it's being disabled |
| * or not. This also WARNs if it detects an invalid state (both CRTC and FB |
| * need to either both be NULL or both be non-NULL). |
| * |
| * RETURNS: |
| * True if the plane is being disabled, false otherwise. |
| */ |
| static inline bool |
| drm_atomic_plane_disabling(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| /* |
| * When disabling a plane, CRTC and FB should always be NULL together. |
| * Anything else should be considered a bug in the atomic core, so we |
| * gently warn about it. |
| */ |
| WARN_ON((plane->state->crtc == NULL && plane->state->fb != NULL) || |
| (plane->state->crtc != NULL && plane->state->fb == NULL)); |
| |
| /* |
| * When using the transitional helpers, old_state may be NULL. If so, |
| * we know nothing about the current state and have to assume that it |
| * might be enabled. |
| * |
| * When using the atomic helpers, old_state won't be NULL. Therefore |
| * this check assumes that either the driver will have reconstructed |
| * the correct state in ->reset() or that the driver will have taken |
| * appropriate measures to disable all planes. |
| */ |
| return (!old_state || old_state->crtc) && !plane->state->crtc; |
| } |
| |
| #endif /* DRM_ATOMIC_HELPER_H_ */ |