Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2006 Keith Packard |
| 3 | * Copyright © 2007-2008 Dave Airlie |
| 4 | * Copyright © 2007-2008 Intel Corporation |
| 5 | * Jesse Barnes <jesse.barnes@intel.com> |
| 6 | * Copyright © 2011-2013 Intel Corporation |
| 7 | * Copyright © 2015 Intel Corporation |
| 8 | * Daniel Vetter <daniel.vetter@ffwll.ch> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 11 | * copy of this software and associated documentation files (the "Software"), |
| 12 | * to deal in the Software without restriction, including without limitation |
| 13 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 14 | * and/or sell copies of the Software, and to permit persons to whom the |
| 15 | * Software is furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 23 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 24 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 25 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 26 | * OTHER DEALINGS IN THE SOFTWARE. |
| 27 | */ |
| 28 | |
| 29 | #ifndef __DRM_MODESET_HELPER_VTABLES_H__ |
| 30 | #define __DRM_MODESET_HELPER_VTABLES_H__ |
| 31 | |
| 32 | #include <drm/drm_crtc.h> |
| 33 | |
| 34 | /** |
| 35 | * DOC: overview |
| 36 | * |
| 37 | * The DRM mode setting helper functions are common code for drivers to use if |
| 38 | * they wish. Drivers are not forced to use this code in their |
| 39 | * implementations but it would be useful if the code they do use at least |
| 40 | * provides a consistent interface and operation to userspace. Therefore it is |
| 41 | * highly recommended to use the provided helpers as much as possible. |
| 42 | * |
| 43 | * Because there is only one pointer per modeset object to hold a vfunc table |
| 44 | * for helper libraries they are by necessity shared among the different |
| 45 | * helpers. |
| 46 | * |
| 47 | * To make this clear all the helper vtables are pulled together in this location here. |
| 48 | */ |
| 49 | |
| 50 | enum mode_set_atomic; |
| 51 | |
| 52 | /** |
| 53 | * struct drm_crtc_helper_funcs - helper operations for CRTCs |
| 54 | * @dpms: set power state |
| 55 | * @prepare: prepare the CRTC, called before @mode_set |
| 56 | * @commit: commit changes to CRTC, called after @mode_set |
| 57 | * @mode_fixup: try to fixup proposed mode for this CRTC |
| 58 | * @mode_set: set this mode |
| 59 | * @mode_set_nofb: set mode only (no scanout buffer attached) |
| 60 | * @mode_set_base: update the scanout buffer |
| 61 | * @mode_set_base_atomic: non-blocking mode set (used for kgdb support) |
| 62 | * @load_lut: load color palette |
| 63 | * @disable: disable CRTC when no longer in use |
| 64 | * @enable: enable CRTC |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 65 | * |
| 66 | * The helper operations are called by the mid-layer CRTC helper. |
| 67 | * |
| 68 | * Note that with atomic helpers @dpms, @prepare and @commit hooks are |
| 69 | * deprecated. Used @enable and @disable instead exclusively. |
| 70 | * |
| 71 | * With legacy crtc helpers there's a big semantic difference between @disable |
| 72 | * and the other hooks: @disable also needs to release any resources acquired in |
| 73 | * @mode_set (like shared PLLs). |
| 74 | */ |
| 75 | struct drm_crtc_helper_funcs { |
| 76 | /* |
| 77 | * Control power levels on the CRTC. If the mode passed in is |
| 78 | * unsupported, the provider must use the next lowest power level. |
| 79 | */ |
| 80 | void (*dpms)(struct drm_crtc *crtc, int mode); |
| 81 | void (*prepare)(struct drm_crtc *crtc); |
| 82 | void (*commit)(struct drm_crtc *crtc); |
| 83 | |
| 84 | /* Provider can fixup or change mode timings before modeset occurs */ |
| 85 | bool (*mode_fixup)(struct drm_crtc *crtc, |
| 86 | const struct drm_display_mode *mode, |
| 87 | struct drm_display_mode *adjusted_mode); |
| 88 | /* Actually set the mode */ |
| 89 | int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| 90 | struct drm_display_mode *adjusted_mode, int x, int y, |
| 91 | struct drm_framebuffer *old_fb); |
| 92 | /* Actually set the mode for atomic helpers, optional */ |
| 93 | void (*mode_set_nofb)(struct drm_crtc *crtc); |
| 94 | |
| 95 | /* Move the crtc on the current fb to the given position *optional* */ |
| 96 | int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
| 97 | struct drm_framebuffer *old_fb); |
| 98 | int (*mode_set_base_atomic)(struct drm_crtc *crtc, |
| 99 | struct drm_framebuffer *fb, int x, int y, |
| 100 | enum mode_set_atomic); |
| 101 | |
| 102 | /* reload the current crtc LUT */ |
| 103 | void (*load_lut)(struct drm_crtc *crtc); |
| 104 | |
| 105 | void (*disable)(struct drm_crtc *crtc); |
| 106 | void (*enable)(struct drm_crtc *crtc); |
| 107 | |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 108 | /** |
| 109 | * @atomic_check: |
| 110 | * |
| 111 | * Drivers should check plane-update related CRTC constraints in this |
| 112 | * hook. They can also check mode related limitations but need to be |
| 113 | * aware of the calling order, since this hook is used by |
| 114 | * drm_atomic_helper_check_planes() whereas the preparations needed to |
| 115 | * check output routing and the display mode is done in |
| 116 | * drm_atomic_helper_check_modeset(). Therefore drivers that want to |
| 117 | * check output routing and display mode constraints in this callback |
| 118 | * must ensure that drm_atomic_helper_check_modeset() has been called |
| 119 | * beforehand. This is calling order used by the default helper |
| 120 | * implementation in drm_atomic_helper_check(). |
| 121 | * |
| 122 | * When using drm_atomic_helper_check_planes() CRTCs' ->atomic_check() |
| 123 | * hooks are called after the ones for planes, which allows drivers to |
| 124 | * assign shared resources requested by planes in the CRTC callback |
| 125 | * here. For more complicated dependencies the driver can call the provided |
| 126 | * check helpers multiple times until the computed state has a final |
| 127 | * configuration and everything has been checked. |
| 128 | * |
| 129 | * This function is also allowed to inspect any other object's state and |
| 130 | * can add more state objects to the atomic commit if needed. Care must |
| 131 | * be taken though to ensure that state check&compute functions for |
| 132 | * these added states are all called, and derived state in other objects |
| 133 | * all updated. Again the recommendation is to just call check helpers |
| 134 | * until a maximal configuration is reached. |
| 135 | * |
| 136 | * This callback is used by the atomic modeset helpers and by the |
| 137 | * transitional plane helpers, but it is optional. |
| 138 | * |
| 139 | * NOTE: |
| 140 | * |
| 141 | * This function is called in the check phase of an atomic update. The |
| 142 | * driver is not allowed to change anything outside of the free-standing |
| 143 | * state objects passed-in or assembled in the overall &drm_atomic_state |
| 144 | * update tracking structure. |
| 145 | * |
| 146 | * RETURNS: |
| 147 | * |
| 148 | * 0 on success, -EINVAL if the state or the transition can't be |
| 149 | * supported, -ENOMEM on memory allocation failure and -EDEADLK if an |
| 150 | * attempt to obtain another state object ran into a &drm_modeset_lock |
| 151 | * deadlock. |
| 152 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 153 | int (*atomic_check)(struct drm_crtc *crtc, |
| 154 | struct drm_crtc_state *state); |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 155 | |
| 156 | /** |
| 157 | * @atomic_begin: |
| 158 | * |
| 159 | * Drivers should prepare for an atomic update of multiple planes on |
| 160 | * a CRTC in this hook. Depending upon hardware this might be vblank |
| 161 | * evasion, blocking updates by setting bits or doing preparatory work |
| 162 | * for e.g. manual update display. |
| 163 | * |
| 164 | * This hook is called before any plane commit functions are called. |
| 165 | * |
| 166 | * Note that the power state of the display pipe when this function is |
| 167 | * called depends upon the exact helpers and calling sequence the driver |
| 168 | * has picked. See drm_atomic_commit_planes() for a discussion of the |
| 169 | * tradeoffs and variants of plane commit helpers. |
| 170 | * |
| 171 | * This callback is used by the atomic modeset helpers and by the |
| 172 | * transitional plane helpers, but it is optional. |
| 173 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 174 | void (*atomic_begin)(struct drm_crtc *crtc, |
| 175 | struct drm_crtc_state *old_crtc_state); |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 176 | /** |
| 177 | * @atomic_flush: |
| 178 | * |
| 179 | * Drivers should finalize an atomic update of multiple planes on |
| 180 | * a CRTC in this hook. Depending upon hardware this might include |
| 181 | * checking that vblank evasion was successful, unblocking updates by |
| 182 | * setting bits or setting the GO bit to flush out all updates. |
| 183 | * |
| 184 | * Simple hardware or hardware with special requirements can commit and |
| 185 | * flush out all updates for all planes from this hook and forgo all the |
| 186 | * other commit hooks for plane updates. |
| 187 | * |
| 188 | * This hook is called after any plane commit functions are called. |
| 189 | * |
| 190 | * Note that the power state of the display pipe when this function is |
| 191 | * called depends upon the exact helpers and calling sequence the driver |
| 192 | * has picked. See drm_atomic_commit_planes() for a discussion of the |
| 193 | * tradeoffs and variants of plane commit helpers. |
| 194 | * |
| 195 | * This callback is used by the atomic modeset helpers and by the |
| 196 | * transitional plane helpers, but it is optional. |
| 197 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 198 | void (*atomic_flush)(struct drm_crtc *crtc, |
| 199 | struct drm_crtc_state *old_crtc_state); |
| 200 | }; |
| 201 | |
| 202 | /** |
| 203 | * drm_crtc_helper_add - sets the helper vtable for a crtc |
| 204 | * @crtc: DRM CRTC |
| 205 | * @funcs: helper vtable to set for @crtc |
| 206 | */ |
| 207 | static inline void drm_crtc_helper_add(struct drm_crtc *crtc, |
| 208 | const struct drm_crtc_helper_funcs *funcs) |
| 209 | { |
| 210 | crtc->helper_private = funcs; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * struct drm_encoder_helper_funcs - helper operations for encoders |
| 215 | * @dpms: set power state |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 216 | * @mode_fixup: try to fixup proposed mode for this connector |
| 217 | * @prepare: part of the disable sequence, called before the CRTC modeset |
| 218 | * @commit: called after the CRTC modeset |
| 219 | * @mode_set: set this mode, optional for atomic helpers |
| 220 | * @get_crtc: return CRTC that the encoder is currently attached to |
| 221 | * @detect: connection status detection |
| 222 | * @disable: disable encoder when not in use (overrides DPMS off) |
| 223 | * @enable: enable encoder |
| 224 | * @atomic_check: check for validity of an atomic update |
| 225 | * |
| 226 | * The helper operations are called by the mid-layer CRTC helper. |
| 227 | * |
| 228 | * Note that with atomic helpers @dpms, @prepare and @commit hooks are |
| 229 | * deprecated. Used @enable and @disable instead exclusively. |
| 230 | * |
| 231 | * With legacy crtc helpers there's a big semantic difference between @disable |
| 232 | * and the other hooks: @disable also needs to release any resources acquired in |
| 233 | * @mode_set (like shared PLLs). |
| 234 | */ |
| 235 | struct drm_encoder_helper_funcs { |
| 236 | void (*dpms)(struct drm_encoder *encoder, int mode); |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 237 | |
| 238 | bool (*mode_fixup)(struct drm_encoder *encoder, |
| 239 | const struct drm_display_mode *mode, |
| 240 | struct drm_display_mode *adjusted_mode); |
| 241 | void (*prepare)(struct drm_encoder *encoder); |
| 242 | void (*commit)(struct drm_encoder *encoder); |
| 243 | void (*mode_set)(struct drm_encoder *encoder, |
| 244 | struct drm_display_mode *mode, |
| 245 | struct drm_display_mode *adjusted_mode); |
| 246 | struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
| 247 | /* detect for DAC style encoders */ |
| 248 | enum drm_connector_status (*detect)(struct drm_encoder *encoder, |
| 249 | struct drm_connector *connector); |
| 250 | void (*disable)(struct drm_encoder *encoder); |
| 251 | |
| 252 | void (*enable)(struct drm_encoder *encoder); |
| 253 | |
| 254 | /* atomic helpers */ |
| 255 | int (*atomic_check)(struct drm_encoder *encoder, |
| 256 | struct drm_crtc_state *crtc_state, |
| 257 | struct drm_connector_state *conn_state); |
| 258 | }; |
| 259 | |
| 260 | /** |
| 261 | * drm_encoder_helper_add - sets the helper vtable for a encoder |
| 262 | * @encoder: DRM encoder |
| 263 | * @funcs: helper vtable to set for @encoder |
| 264 | */ |
| 265 | static inline void drm_encoder_helper_add(struct drm_encoder *encoder, |
| 266 | const struct drm_encoder_helper_funcs *funcs) |
| 267 | { |
| 268 | encoder->helper_private = funcs; |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * struct drm_connector_helper_funcs - helper operations for connectors |
| 273 | * @get_modes: get mode list for this connector |
| 274 | * @mode_valid: is this mode valid on the given connector? (optional) |
| 275 | * @best_encoder: return the preferred encoder for this connector |
| 276 | * @atomic_best_encoder: atomic version of @best_encoder |
| 277 | * |
| 278 | * The helper operations are called by the mid-layer CRTC helper. |
| 279 | */ |
| 280 | struct drm_connector_helper_funcs { |
| 281 | int (*get_modes)(struct drm_connector *connector); |
| 282 | enum drm_mode_status (*mode_valid)(struct drm_connector *connector, |
| 283 | struct drm_display_mode *mode); |
| 284 | struct drm_encoder *(*best_encoder)(struct drm_connector *connector); |
| 285 | struct drm_encoder *(*atomic_best_encoder)(struct drm_connector *connector, |
| 286 | struct drm_connector_state *connector_state); |
| 287 | }; |
| 288 | |
| 289 | /** |
| 290 | * drm_connector_helper_add - sets the helper vtable for a connector |
| 291 | * @connector: DRM connector |
| 292 | * @funcs: helper vtable to set for @connector |
| 293 | */ |
| 294 | static inline void drm_connector_helper_add(struct drm_connector *connector, |
| 295 | const struct drm_connector_helper_funcs *funcs) |
| 296 | { |
| 297 | connector->helper_private = funcs; |
| 298 | } |
| 299 | |
| 300 | /** |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 301 | * struct drm_plane_helper_funcs - helper operations for planes |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 302 | * |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 303 | * These functions are used by the atomic helpers and by the transitional plane |
| 304 | * helpers. |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 305 | */ |
| 306 | struct drm_plane_helper_funcs { |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 307 | /** |
| 308 | * @prepare_fb: |
| 309 | * |
| 310 | * This hook is to prepare a framebuffer for scanout by e.g. pinning |
| 311 | * it's backing storage or relocating it into a contiguous block of |
| 312 | * VRAM. Other possible preparatory work includes flushing caches. |
| 313 | * |
| 314 | * This function must not block for outstanding rendering, since it is |
| 315 | * called in the context of the atomic IOCTL even for async commits to |
| 316 | * be able to return any errors to userspace. Instead the recommended |
| 317 | * way is to fill out the fence member of the passed-in |
| 318 | * &drm_plane_state. If the driver doesn't support native fences then |
| 319 | * equivalent functionality should be implemented through private |
| 320 | * members in the plane structure. |
| 321 | * |
| 322 | * The helpers will call @cleanup_fb with matching arguments for every |
| 323 | * successful call to this hook. |
| 324 | * |
| 325 | * This callback is used by the atomic modeset helpers and by the |
| 326 | * transitional plane helpers, but it is optional. |
| 327 | * |
| 328 | * RETURNS: |
| 329 | * |
| 330 | * 0 on success or one of the following negative error codes allowed by |
| 331 | * the atomic_commit hook in &drm_mode_config_funcs. When using helpers |
| 332 | * this callback is the only one which can fail an atomic commit, |
| 333 | * everything else must complete successfully. |
| 334 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 335 | int (*prepare_fb)(struct drm_plane *plane, |
| 336 | const struct drm_plane_state *new_state); |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 337 | /** |
| 338 | * @cleanup_fb: |
| 339 | * |
| 340 | * This hook is called to clean up any resources allocated for the given |
| 341 | * framebuffer and plane configuration in @prepare_fb. |
| 342 | * |
| 343 | * This callback is used by the atomic modeset helpers and by the |
| 344 | * transitional plane helpers, but it is optional. |
| 345 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 346 | void (*cleanup_fb)(struct drm_plane *plane, |
| 347 | const struct drm_plane_state *old_state); |
| 348 | |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 349 | /** |
| 350 | * @atomic_check: |
| 351 | * |
| 352 | * Drivers should check plane specific constraints in this hook. |
| 353 | * |
| 354 | * When using drm_atomic_helper_check_planes() plane's ->atomic_check() |
| 355 | * hooks are called before the ones for CRTCs, which allows drivers to |
| 356 | * request shared resources that the CRTC controls here. For more |
| 357 | * complicated dependencies the driver can call the provided check helpers |
| 358 | * multiple times until the computed state has a final configuration and |
| 359 | * everything has been checked. |
| 360 | * |
| 361 | * This function is also allowed to inspect any other object's state and |
| 362 | * can add more state objects to the atomic commit if needed. Care must |
| 363 | * be taken though to ensure that state check&compute functions for |
| 364 | * these added states are all called, and derived state in other objects |
| 365 | * all updated. Again the recommendation is to just call check helpers |
| 366 | * until a maximal configuration is reached. |
| 367 | * |
| 368 | * This callback is used by the atomic modeset helpers and by the |
| 369 | * transitional plane helpers, but it is optional. |
| 370 | * |
| 371 | * NOTE: |
| 372 | * |
| 373 | * This function is called in the check phase of an atomic update. The |
| 374 | * driver is not allowed to change anything outside of the free-standing |
| 375 | * state objects passed-in or assembled in the overall &drm_atomic_state |
| 376 | * update tracking structure. |
| 377 | * |
| 378 | * RETURNS: |
| 379 | * |
| 380 | * 0 on success, -EINVAL if the state or the transition can't be |
| 381 | * supported, -ENOMEM on memory allocation failure and -EDEADLK if an |
| 382 | * attempt to obtain another state object ran into a &drm_modeset_lock |
| 383 | * deadlock. |
| 384 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 385 | int (*atomic_check)(struct drm_plane *plane, |
| 386 | struct drm_plane_state *state); |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 387 | |
| 388 | /** |
| 389 | * @atomic_update: |
| 390 | * |
| 391 | * Drivers should use this function to update the plane state. This |
| 392 | * hook is called in-between the ->atomic_begin() and |
| 393 | * ->atomic_flush() of &drm_crtc_helper_funcs. |
| 394 | * |
| 395 | * Note that the power state of the display pipe when this function is |
| 396 | * called depends upon the exact helpers and calling sequence the driver |
| 397 | * has picked. See drm_atomic_commit_planes() for a discussion of the |
| 398 | * tradeoffs and variants of plane commit helpers. |
| 399 | * |
| 400 | * This callback is used by the atomic modeset helpers and by the |
| 401 | * transitional plane helpers, but it is optional. |
| 402 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 403 | void (*atomic_update)(struct drm_plane *plane, |
| 404 | struct drm_plane_state *old_state); |
Daniel Vetter | 11a0ba9 | 2015-12-04 09:46:04 +0100 | [diff] [blame^] | 405 | /** |
| 406 | * @atomic_disable: |
| 407 | * |
| 408 | * Drivers should use this function to unconditionally disable a plane. |
| 409 | * This hook is called in-between the ->atomic_begin() and |
| 410 | * ->atomic_flush() of &drm_crtc_helper_funcs. It is an alternative to |
| 411 | * @atomic_update, which will be called for disabling planes, too, if |
| 412 | * the @atomic_disable hook isn't implemented. |
| 413 | * |
| 414 | * This hook is also useful to disable planes in preparation of a modeset, |
| 415 | * by calling drm_atomic_helper_disable_planes_on_crtc() from the |
| 416 | * ->disable() hook in &drm_crtc_helper_funcs. |
| 417 | * |
| 418 | * Note that the power state of the display pipe when this function is |
| 419 | * called depends upon the exact helpers and calling sequence the driver |
| 420 | * has picked. See drm_atomic_commit_planes() for a discussion of the |
| 421 | * tradeoffs and variants of plane commit helpers. |
| 422 | * |
| 423 | * This callback is used by the atomic modeset helpers and by the |
| 424 | * transitional plane helpers, but it is optional. |
| 425 | */ |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 426 | void (*atomic_disable)(struct drm_plane *plane, |
| 427 | struct drm_plane_state *old_state); |
| 428 | }; |
| 429 | |
| 430 | /** |
| 431 | * drm_plane_helper_add - sets the helper vtable for a plane |
| 432 | * @plane: DRM plane |
| 433 | * @funcs: helper vtable to set for @plane |
| 434 | */ |
| 435 | static inline void drm_plane_helper_add(struct drm_plane *plane, |
| 436 | const struct drm_plane_helper_funcs *funcs) |
| 437 | { |
| 438 | plane->helper_private = funcs; |
| 439 | } |
| 440 | |
| 441 | #endif |