1 /* 2 * Copyright (C) 2014 Red Hat 3 * Copyright (C) 2014 Intel Corp. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * Rob Clark <robdclark@gmail.com> 25 * Daniel Vetter <daniel.vetter@ffwll.ch> 26 */ 27 28 #ifndef DRM_ATOMIC_HELPER_H_ 29 #define DRM_ATOMIC_HELPER_H_ 30 31 #include <drm/drm_crtc.h> 32 33 struct drm_atomic_state; 34 35 int drm_atomic_helper_check_modeset(struct drm_device *dev, 36 struct drm_atomic_state *state); 37 int drm_atomic_helper_check_planes(struct drm_device *dev, 38 struct drm_atomic_state *state); 39 int drm_atomic_helper_check(struct drm_device *dev, 40 struct drm_atomic_state *state); 41 int drm_atomic_helper_commit(struct drm_device *dev, 42 struct drm_atomic_state *state, 43 bool nonblock); 44 45 void drm_atomic_helper_wait_for_fences(struct drm_device *dev, 46 struct drm_atomic_state *state); 47 bool drm_atomic_helper_framebuffer_changed(struct drm_device *dev, 48 struct drm_atomic_state *old_state, 49 struct drm_crtc *crtc); 50 51 void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, 52 struct drm_atomic_state *old_state); 53 54 void 55 drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, 56 struct drm_atomic_state *old_state); 57 58 void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, 59 struct drm_atomic_state *state); 60 void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, 61 struct drm_atomic_state *old_state); 62 63 int drm_atomic_helper_prepare_planes(struct drm_device *dev, 64 struct drm_atomic_state *state); 65 void drm_atomic_helper_commit_planes(struct drm_device *dev, 66 struct drm_atomic_state *state, 67 bool active_only); 68 void drm_atomic_helper_cleanup_planes(struct drm_device *dev, 69 struct drm_atomic_state *old_state); 70 void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state); 71 void drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc *crtc, 72 bool atomic); 73 74 void drm_atomic_helper_swap_state(struct drm_device *dev, 75 struct drm_atomic_state *state); 76 77 /* implementations for legacy interfaces */ 78 int drm_atomic_helper_update_plane(struct drm_plane *plane, 79 struct drm_crtc *crtc, 80 struct drm_framebuffer *fb, 81 int crtc_x, int crtc_y, 82 unsigned int crtc_w, unsigned int crtc_h, 83 uint32_t src_x, uint32_t src_y, 84 uint32_t src_w, uint32_t src_h); 85 int drm_atomic_helper_disable_plane(struct drm_plane *plane); 86 int __drm_atomic_helper_disable_plane(struct drm_plane *plane, 87 struct drm_plane_state *plane_state); 88 int drm_atomic_helper_set_config(struct drm_mode_set *set); 89 int __drm_atomic_helper_set_config(struct drm_mode_set *set, 90 struct drm_atomic_state *state); 91 92 int drm_atomic_helper_disable_all(struct drm_device *dev, 93 struct drm_modeset_acquire_ctx *ctx); 94 struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev); 95 int drm_atomic_helper_resume(struct drm_device *dev, 96 struct drm_atomic_state *state); 97 98 int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, 99 struct drm_property *property, 100 uint64_t val); 101 int drm_atomic_helper_plane_set_property(struct drm_plane *plane, 102 struct drm_property *property, 103 uint64_t val); 104 int drm_atomic_helper_connector_set_property(struct drm_connector *connector, 105 struct drm_property *property, 106 uint64_t val); 107 int drm_atomic_helper_page_flip(struct drm_crtc *crtc, 108 struct drm_framebuffer *fb, 109 struct drm_pending_vblank_event *event, 110 uint32_t flags); 111 int drm_atomic_helper_connector_dpms(struct drm_connector *connector, 112 int mode); 113 struct drm_encoder * 114 drm_atomic_helper_best_encoder(struct drm_connector *connector); 115 116 /* default implementations for state handling */ 117 void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc); 118 void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, 119 struct drm_crtc_state *state); 120 struct drm_crtc_state * 121 drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc); 122 void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, 123 struct drm_crtc_state *state); 124 void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, 125 struct drm_crtc_state *state); 126 127 void drm_atomic_helper_plane_reset(struct drm_plane *plane); 128 void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, 129 struct drm_plane_state *state); 130 struct drm_plane_state * 131 drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane); 132 void __drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, 133 struct drm_plane_state *state); 134 void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, 135 struct drm_plane_state *state); 136 137 void __drm_atomic_helper_connector_reset(struct drm_connector *connector, 138 struct drm_connector_state *conn_state); 139 void drm_atomic_helper_connector_reset(struct drm_connector *connector); 140 void 141 __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, 142 struct drm_connector_state *state); 143 struct drm_connector_state * 144 drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector); 145 struct drm_atomic_state * 146 drm_atomic_helper_duplicate_state(struct drm_device *dev, 147 struct drm_modeset_acquire_ctx *ctx); 148 void 149 __drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, 150 struct drm_connector_state *state); 151 void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, 152 struct drm_connector_state *state); 153 void drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, 154 u16 *red, u16 *green, u16 *blue, 155 uint32_t start, uint32_t size); 156 157 /** 158 * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC 159 * @plane: the loop cursor 160 * @crtc: the crtc whose planes are iterated 161 * 162 * This iterates over the current state, useful (for example) when applying 163 * atomic state after it has been checked and swapped. To iterate over the 164 * planes which *will* be attached (for ->atomic_check()) see 165 * drm_crtc_for_each_pending_plane() 166 */ 167 #define drm_atomic_crtc_for_each_plane(plane, crtc) \ 168 drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask) 169 170 /** 171 * drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state 172 * @plane: the loop cursor 173 * @crtc_state: the incoming crtc-state 174 * 175 * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be 176 * attached if the specified state is applied. Useful during (for example) 177 * ->atomic_check() operations, to validate the incoming state 178 */ 179 #define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \ 180 drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask) 181 182 /* 183 * drm_atomic_plane_disabling - check whether a plane is being disabled 184 * @plane: plane object 185 * @old_state: previous atomic state 186 * 187 * Checks the atomic state of a plane to determine whether it's being disabled 188 * or not. This also WARNs if it detects an invalid state (both CRTC and FB 189 * need to either both be NULL or both be non-NULL). 190 * 191 * RETURNS: 192 * True if the plane is being disabled, false otherwise. 193 */ 194 static inline bool 195 drm_atomic_plane_disabling(struct drm_plane *plane, 196 struct drm_plane_state *old_state) 197 { 198 /* 199 * When disabling a plane, CRTC and FB should always be NULL together. 200 * Anything else should be considered a bug in the atomic core, so we 201 * gently warn about it. 202 */ 203 WARN_ON((plane->state->crtc == NULL && plane->state->fb != NULL) || 204 (plane->state->crtc != NULL && plane->state->fb == NULL)); 205 206 /* 207 * When using the transitional helpers, old_state may be NULL. If so, 208 * we know nothing about the current state and have to assume that it 209 * might be enabled. 210 * 211 * When using the atomic helpers, old_state won't be NULL. Therefore 212 * this check assumes that either the driver will have reconstructed 213 * the correct state in ->reset() or that the driver will have taken 214 * appropriate measures to disable all planes. 215 */ 216 return (!old_state || old_state->crtc) && !plane->state->crtc; 217 } 218 219 #endif /* DRM_ATOMIC_HELPER_H_ */ 220