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 #include <drm/drm_modeset_helper_vtables.h> 33 #include <drm/drm_modeset_helper.h> 34 35 struct drm_atomic_state; 36 struct drm_private_obj; 37 struct drm_private_state; 38 39 int drm_atomic_helper_check_modeset(struct drm_device *dev, 40 struct drm_atomic_state *state); 41 int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, 42 const struct drm_crtc_state *crtc_state, 43 int min_scale, 44 int max_scale, 45 bool can_position, 46 bool can_update_disabled); 47 int drm_atomic_helper_check_planes(struct drm_device *dev, 48 struct drm_atomic_state *state); 49 int drm_atomic_helper_check(struct drm_device *dev, 50 struct drm_atomic_state *state); 51 void drm_atomic_helper_commit_tail(struct drm_atomic_state *state); 52 void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *state); 53 int drm_atomic_helper_commit(struct drm_device *dev, 54 struct drm_atomic_state *state, 55 bool nonblock); 56 int drm_atomic_helper_async_check(struct drm_device *dev, 57 struct drm_atomic_state *state); 58 void drm_atomic_helper_async_commit(struct drm_device *dev, 59 struct drm_atomic_state *state); 60 61 int drm_atomic_helper_wait_for_fences(struct drm_device *dev, 62 struct drm_atomic_state *state, 63 bool pre_swap); 64 65 void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, 66 struct drm_atomic_state *old_state); 67 68 void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, 69 struct drm_atomic_state *old_state); 70 71 void 72 drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, 73 struct drm_atomic_state *old_state); 74 75 void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, 76 struct drm_atomic_state *state); 77 void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, 78 struct drm_atomic_state *old_state); 79 80 int drm_atomic_helper_prepare_planes(struct drm_device *dev, 81 struct drm_atomic_state *state); 82 83 #define DRM_PLANE_COMMIT_ACTIVE_ONLY BIT(0) 84 #define DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET BIT(1) 85 86 void drm_atomic_helper_commit_planes(struct drm_device *dev, 87 struct drm_atomic_state *state, 88 uint32_t flags); 89 void drm_atomic_helper_cleanup_planes(struct drm_device *dev, 90 struct drm_atomic_state *old_state); 91 void drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state); 92 void 93 drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, 94 bool atomic); 95 96 int __must_check drm_atomic_helper_swap_state(struct drm_atomic_state *state, 97 bool stall); 98 99 /* nonblocking commit helpers */ 100 int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, 101 bool nonblock); 102 void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *state); 103 void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *state); 104 void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *state); 105 106 /* implementations for legacy interfaces */ 107 int drm_atomic_helper_update_plane(struct drm_plane *plane, 108 struct drm_crtc *crtc, 109 struct drm_framebuffer *fb, 110 int crtc_x, int crtc_y, 111 unsigned int crtc_w, unsigned int crtc_h, 112 uint32_t src_x, uint32_t src_y, 113 uint32_t src_w, uint32_t src_h, 114 struct drm_modeset_acquire_ctx *ctx); 115 int drm_atomic_helper_disable_plane(struct drm_plane *plane, 116 struct drm_modeset_acquire_ctx *ctx); 117 int __drm_atomic_helper_disable_plane(struct drm_plane *plane, 118 struct drm_plane_state *plane_state); 119 int drm_atomic_helper_set_config(struct drm_mode_set *set, 120 struct drm_modeset_acquire_ctx *ctx); 121 int __drm_atomic_helper_set_config(struct drm_mode_set *set, 122 struct drm_atomic_state *state); 123 124 int drm_atomic_helper_disable_all(struct drm_device *dev, 125 struct drm_modeset_acquire_ctx *ctx); 126 void drm_atomic_helper_shutdown(struct drm_device *dev); 127 struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev); 128 int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, 129 struct drm_modeset_acquire_ctx *ctx); 130 int drm_atomic_helper_resume(struct drm_device *dev, 131 struct drm_atomic_state *state); 132 133 int drm_atomic_helper_page_flip(struct drm_crtc *crtc, 134 struct drm_framebuffer *fb, 135 struct drm_pending_vblank_event *event, 136 uint32_t flags, 137 struct drm_modeset_acquire_ctx *ctx); 138 int drm_atomic_helper_page_flip_target( 139 struct drm_crtc *crtc, 140 struct drm_framebuffer *fb, 141 struct drm_pending_vblank_event *event, 142 uint32_t flags, 143 uint32_t target, 144 struct drm_modeset_acquire_ctx *ctx); 145 struct drm_encoder * 146 drm_atomic_helper_best_encoder(struct drm_connector *connector); 147 148 /* default implementations for state handling */ 149 void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc); 150 void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, 151 struct drm_crtc_state *state); 152 struct drm_crtc_state * 153 drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc); 154 void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state); 155 void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, 156 struct drm_crtc_state *state); 157 158 void drm_atomic_helper_plane_reset(struct drm_plane *plane); 159 void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, 160 struct drm_plane_state *state); 161 struct drm_plane_state * 162 drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane); 163 void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state); 164 void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, 165 struct drm_plane_state *state); 166 167 void __drm_atomic_helper_connector_reset(struct drm_connector *connector, 168 struct drm_connector_state *conn_state); 169 void drm_atomic_helper_connector_reset(struct drm_connector *connector); 170 void 171 __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, 172 struct drm_connector_state *state); 173 struct drm_connector_state * 174 drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector); 175 struct drm_atomic_state * 176 drm_atomic_helper_duplicate_state(struct drm_device *dev, 177 struct drm_modeset_acquire_ctx *ctx); 178 void 179 __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state); 180 void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, 181 struct drm_connector_state *state); 182 int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, 183 u16 *red, u16 *green, u16 *blue, 184 uint32_t size, 185 struct drm_modeset_acquire_ctx *ctx); 186 void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj, 187 struct drm_private_state *state); 188 189 /** 190 * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC 191 * @plane: the loop cursor 192 * @crtc: the crtc whose planes are iterated 193 * 194 * This iterates over the current state, useful (for example) when applying 195 * atomic state after it has been checked and swapped. To iterate over the 196 * planes which *will* be attached (more useful in code called from 197 * &drm_mode_config_funcs.atomic_check) see 198 * drm_atomic_crtc_state_for_each_plane(). 199 */ 200 #define drm_atomic_crtc_for_each_plane(plane, crtc) \ 201 drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask) 202 203 /** 204 * drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state 205 * @plane: the loop cursor 206 * @crtc_state: the incoming crtc-state 207 * 208 * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be 209 * attached if the specified state is applied. Useful during for example 210 * in code called from &drm_mode_config_funcs.atomic_check operations, to 211 * validate the incoming state. 212 */ 213 #define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \ 214 drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask) 215 216 /** 217 * drm_crtc_atomic_state_for_each_plane_state - iterate over attached planes in new state 218 * @plane: the loop cursor 219 * @plane_state: loop cursor for the plane's state, must be const 220 * @crtc_state: the incoming crtc-state 221 * 222 * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be 223 * attached if the specified state is applied. Useful during for example 224 * in code called from &drm_mode_config_funcs.atomic_check operations, to 225 * validate the incoming state. 226 * 227 * Compared to just drm_atomic_crtc_state_for_each_plane() this also fills in a 228 * const plane_state. This is useful when a driver just wants to peek at other 229 * active planes on this crtc, but does not need to change it. 230 */ 231 #define drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) \ 232 drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask) \ 233 for_each_if ((plane_state = \ 234 __drm_atomic_get_current_plane_state((crtc_state)->state, \ 235 plane))) 236 237 /** 238 * drm_atomic_plane_disabling - check whether a plane is being disabled 239 * @old_plane_state: old atomic plane state 240 * @new_plane_state: new atomic plane state 241 * 242 * Checks the atomic state of a plane to determine whether it's being disabled 243 * or not. This also WARNs if it detects an invalid state (both CRTC and FB 244 * need to either both be NULL or both be non-NULL). 245 * 246 * RETURNS: 247 * True if the plane is being disabled, false otherwise. 248 */ 249 static inline bool 250 drm_atomic_plane_disabling(struct drm_plane_state *old_plane_state, 251 struct drm_plane_state *new_plane_state) 252 { 253 /* 254 * When disabling a plane, CRTC and FB should always be NULL together. 255 * Anything else should be considered a bug in the atomic core, so we 256 * gently warn about it. 257 */ 258 WARN_ON((new_plane_state->crtc == NULL && new_plane_state->fb != NULL) || 259 (new_plane_state->crtc != NULL && new_plane_state->fb == NULL)); 260 261 return old_plane_state->crtc && !new_plane_state->crtc; 262 } 263 264 #endif /* DRM_ATOMIC_HELPER_H_ */ 265