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-rw-r--r--include/drm/drm_atomic_helper.h238
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diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
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+/*
+ * 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>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_modeset_helper.h>
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_util.h>
+
+struct drm_atomic_state;
+struct drm_private_obj;
+struct drm_private_state;
+
+int drm_atomic_helper_check_modeset(struct drm_device *dev,
+ struct drm_atomic_state *state);
+int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state,
+ const struct drm_crtc_state *crtc_state,
+ int min_scale,
+ int max_scale,
+ bool can_position,
+ bool can_update_disabled);
+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);
+void drm_atomic_helper_commit_tail(struct drm_atomic_state *state);
+void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *state);
+int drm_atomic_helper_commit(struct drm_device *dev,
+ struct drm_atomic_state *state,
+ bool nonblock);
+int drm_atomic_helper_async_check(struct drm_device *dev,
+ struct drm_atomic_state *state);
+void drm_atomic_helper_async_commit(struct drm_device *dev,
+ struct drm_atomic_state *state);
+
+int drm_atomic_helper_wait_for_fences(struct drm_device *dev,
+ struct drm_atomic_state *state,
+ bool pre_swap);
+
+void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
+ struct drm_atomic_state *old_state);
+
+void drm_atomic_helper_wait_for_flip_done(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_calc_timestamping_constants(struct drm_atomic_state *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);
+
+#define DRM_PLANE_COMMIT_ACTIVE_ONLY BIT(0)
+#define DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET BIT(1)
+
+void drm_atomic_helper_commit_planes(struct drm_device *dev,
+ struct drm_atomic_state *state,
+ uint32_t flags);
+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_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state,
+ bool atomic);
+
+int __must_check drm_atomic_helper_swap_state(struct drm_atomic_state *state,
+ bool stall);
+
+/* nonblocking commit helpers */
+int drm_atomic_helper_setup_commit(struct drm_atomic_state *state,
+ bool nonblock);
+void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *state);
+void drm_atomic_helper_fake_vblank(struct drm_atomic_state *state);
+void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *state);
+void drm_atomic_helper_commit_cleanup_done(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,
+ struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_disable_plane(struct drm_plane *plane,
+ struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+ struct drm_modeset_acquire_ctx *ctx);
+
+int drm_atomic_helper_disable_all(struct drm_device *dev,
+ struct drm_modeset_acquire_ctx *ctx);
+void drm_atomic_helper_shutdown(struct drm_device *dev);
+struct drm_atomic_state *
+drm_atomic_helper_duplicate_state(struct drm_device *dev,
+ struct drm_modeset_acquire_ctx *ctx);
+struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);
+int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
+ struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_resume(struct drm_device *dev,
+ struct drm_atomic_state *state);
+
+int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t flags,
+ struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_page_flip_target(
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t flags,
+ uint32_t target,
+ struct drm_modeset_acquire_ctx *ctx);
+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);
+
+/**
+ * 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 (more useful in code called from
+ * &drm_mode_config_funcs.atomic_check) see
+ * drm_atomic_crtc_state_for_each_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
+ * in code called from &drm_mode_config_funcs.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_crtc_atomic_state_for_each_plane_state - iterate over attached planes in new state
+ * @plane: the loop cursor
+ * @plane_state: loop cursor for the plane's state, must be const
+ * @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
+ * in code called from &drm_mode_config_funcs.atomic_check operations, to
+ * validate the incoming state.
+ *
+ * Compared to just drm_atomic_crtc_state_for_each_plane() this also fills in a
+ * const plane_state. This is useful when a driver just wants to peek at other
+ * active planes on this CRTC, but does not need to change it.
+ */
+#define drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) \
+ drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask) \
+ for_each_if ((plane_state = \
+ __drm_atomic_get_current_plane_state((crtc_state)->state, \
+ plane)))
+
+/**
+ * drm_atomic_plane_disabling - check whether a plane is being disabled
+ * @old_plane_state: old atomic plane state
+ * @new_plane_state: new atomic plane 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_state *old_plane_state,
+ struct drm_plane_state *new_plane_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((new_plane_state->crtc == NULL && new_plane_state->fb != NULL) ||
+ (new_plane_state->crtc != NULL && new_plane_state->fb == NULL));
+
+ return old_plane_state->crtc && !new_plane_state->crtc;
+}
+
+u32 *
+drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state,
+ u32 output_fmt,
+ unsigned int *num_input_fmts);
+
+#endif /* DRM_ATOMIC_HELPER_H_ */