1 /* 2 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4 * Copyright (c) 2009-2010, Code Aurora Forum. 5 * Copyright 2016 Intel Corp. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the next 15 * paragraph) shall be included in all copies or substantial portions of the 16 * Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 27 #ifndef _DRM_DRV_H_ 28 #define _DRM_DRV_H_ 29 30 #include <linux/list.h> 31 #include <linux/irqreturn.h> 32 33 #include <drm/drm_device.h> 34 35 struct drm_file; 36 struct drm_gem_object; 37 struct drm_master; 38 struct drm_minor; 39 struct dma_buf_attachment; 40 struct drm_display_mode; 41 struct drm_mode_create_dumb; 42 struct drm_printer; 43 44 /** 45 * enum drm_driver_feature - feature flags 46 * 47 * See &drm_driver.driver_features, drm_device.driver_features and 48 * drm_core_check_feature(). 49 */ 50 enum drm_driver_feature { 51 /** 52 * @DRIVER_GEM: 53 * 54 * Driver use the GEM memory manager. This should be set for all modern 55 * drivers. 56 */ 57 DRIVER_GEM = BIT(0), 58 /** 59 * @DRIVER_MODESET: 60 * 61 * Driver supports mode setting interfaces (KMS). 62 */ 63 DRIVER_MODESET = BIT(1), 64 /** 65 * @DRIVER_RENDER: 66 * 67 * Driver supports dedicated render nodes. See also the :ref:`section on 68 * render nodes <drm_render_node>` for details. 69 */ 70 DRIVER_RENDER = BIT(3), 71 /** 72 * @DRIVER_ATOMIC: 73 * 74 * Driver supports the full atomic modesetting userspace API. Drivers 75 * which only use atomic internally, but do not the support the full 76 * userspace API (e.g. not all properties converted to atomic, or 77 * multi-plane updates are not guaranteed to be tear-free) should not 78 * set this flag. 79 */ 80 DRIVER_ATOMIC = BIT(4), 81 /** 82 * @DRIVER_SYNCOBJ: 83 * 84 * Driver supports &drm_syncobj for explicit synchronization of command 85 * submission. 86 */ 87 DRIVER_SYNCOBJ = BIT(5), 88 /** 89 * @DRIVER_SYNCOBJ_TIMELINE: 90 * 91 * Driver supports the timeline flavor of &drm_syncobj for explicit 92 * synchronization of command submission. 93 */ 94 DRIVER_SYNCOBJ_TIMELINE = BIT(6), 95 96 /* IMPORTANT: Below are all the legacy flags, add new ones above. */ 97 98 /** 99 * @DRIVER_USE_AGP: 100 * 101 * Set up DRM AGP support, see drm_agp_init(), the DRM core will manage 102 * AGP resources. New drivers don't need this. 103 */ 104 DRIVER_USE_AGP = BIT(25), 105 /** 106 * @DRIVER_LEGACY: 107 * 108 * Denote a legacy driver using shadow attach. Do not use. 109 */ 110 DRIVER_LEGACY = BIT(26), 111 /** 112 * @DRIVER_PCI_DMA: 113 * 114 * Driver is capable of PCI DMA, mapping of PCI DMA buffers to userspace 115 * will be enabled. Only for legacy drivers. Do not use. 116 */ 117 DRIVER_PCI_DMA = BIT(27), 118 /** 119 * @DRIVER_SG: 120 * 121 * Driver can perform scatter/gather DMA, allocation and mapping of 122 * scatter/gather buffers will be enabled. Only for legacy drivers. Do 123 * not use. 124 */ 125 DRIVER_SG = BIT(28), 126 127 /** 128 * @DRIVER_HAVE_DMA: 129 * 130 * Driver supports DMA, the userspace DMA API will be supported. Only 131 * for legacy drivers. Do not use. 132 */ 133 DRIVER_HAVE_DMA = BIT(29), 134 /** 135 * @DRIVER_HAVE_IRQ: 136 * 137 * Legacy irq support. Only for legacy drivers. Do not use. 138 * 139 * New drivers can either use the drm_irq_install() and 140 * drm_irq_uninstall() helper functions, or roll their own irq support 141 * code by calling request_irq() directly. 142 */ 143 DRIVER_HAVE_IRQ = BIT(30), 144 /** 145 * @DRIVER_KMS_LEGACY_CONTEXT: 146 * 147 * Used only by nouveau for backwards compatibility with existing 148 * userspace. Do not use. 149 */ 150 DRIVER_KMS_LEGACY_CONTEXT = BIT(31), 151 }; 152 153 /** 154 * struct drm_driver - DRM driver structure 155 * 156 * This structure represent the common code for a family of cards. There will be 157 * one &struct drm_device for each card present in this family. It contains lots 158 * of vfunc entries, and a pile of those probably should be moved to more 159 * appropriate places like &drm_mode_config_funcs or into a new operations 160 * structure for GEM drivers. 161 */ 162 struct drm_driver { 163 /** 164 * @load: 165 * 166 * Backward-compatible driver callback to complete initialization steps 167 * after the driver is registered. For this reason, may suffer from 168 * race conditions and its use is deprecated for new drivers. It is 169 * therefore only supported for existing drivers not yet converted to 170 * the new scheme. See devm_drm_dev_alloc() and drm_dev_register() for 171 * proper and race-free way to set up a &struct drm_device. 172 * 173 * This is deprecated, do not use! 174 * 175 * Returns: 176 * 177 * Zero on success, non-zero value on failure. 178 */ 179 int (*load) (struct drm_device *, unsigned long flags); 180 181 /** 182 * @open: 183 * 184 * Driver callback when a new &struct drm_file is opened. Useful for 185 * setting up driver-private data structures like buffer allocators, 186 * execution contexts or similar things. Such driver-private resources 187 * must be released again in @postclose. 188 * 189 * Since the display/modeset side of DRM can only be owned by exactly 190 * one &struct drm_file (see &drm_file.is_master and &drm_device.master) 191 * there should never be a need to set up any modeset related resources 192 * in this callback. Doing so would be a driver design bug. 193 * 194 * Returns: 195 * 196 * 0 on success, a negative error code on failure, which will be 197 * promoted to userspace as the result of the open() system call. 198 */ 199 int (*open) (struct drm_device *, struct drm_file *); 200 201 /** 202 * @postclose: 203 * 204 * One of the driver callbacks when a new &struct drm_file is closed. 205 * Useful for tearing down driver-private data structures allocated in 206 * @open like buffer allocators, execution contexts or similar things. 207 * 208 * Since the display/modeset side of DRM can only be owned by exactly 209 * one &struct drm_file (see &drm_file.is_master and &drm_device.master) 210 * there should never be a need to tear down any modeset related 211 * resources in this callback. Doing so would be a driver design bug. 212 */ 213 void (*postclose) (struct drm_device *, struct drm_file *); 214 215 /** 216 * @lastclose: 217 * 218 * Called when the last &struct drm_file has been closed and there's 219 * currently no userspace client for the &struct drm_device. 220 * 221 * Modern drivers should only use this to force-restore the fbdev 222 * framebuffer using drm_fb_helper_restore_fbdev_mode_unlocked(). 223 * Anything else would indicate there's something seriously wrong. 224 * Modern drivers can also use this to execute delayed power switching 225 * state changes, e.g. in conjunction with the :ref:`vga_switcheroo` 226 * infrastructure. 227 * 228 * This is called after @postclose hook has been called. 229 * 230 * NOTE: 231 * 232 * All legacy drivers use this callback to de-initialize the hardware. 233 * This is purely because of the shadow-attach model, where the DRM 234 * kernel driver does not really own the hardware. Instead ownershipe is 235 * handled with the help of userspace through an inheritedly racy dance 236 * to set/unset the VT into raw mode. 237 * 238 * Legacy drivers initialize the hardware in the @firstopen callback, 239 * which isn't even called for modern drivers. 240 */ 241 void (*lastclose) (struct drm_device *); 242 243 /** 244 * @unload: 245 * 246 * Reverse the effects of the driver load callback. Ideally, 247 * the clean up performed by the driver should happen in the 248 * reverse order of the initialization. Similarly to the load 249 * hook, this handler is deprecated and its usage should be 250 * dropped in favor of an open-coded teardown function at the 251 * driver layer. See drm_dev_unregister() and drm_dev_put() 252 * for the proper way to remove a &struct drm_device. 253 * 254 * The unload() hook is called right after unregistering 255 * the device. 256 * 257 */ 258 void (*unload) (struct drm_device *); 259 260 /** 261 * @release: 262 * 263 * Optional callback for destroying device data after the final 264 * reference is released, i.e. the device is being destroyed. 265 * 266 * This is deprecated, clean up all memory allocations associated with a 267 * &drm_device using drmm_add_action(), drmm_kmalloc() and related 268 * managed resources functions. 269 */ 270 void (*release) (struct drm_device *); 271 272 /** 273 * @irq_handler: 274 * 275 * Interrupt handler called when using drm_irq_install(). Not used by 276 * drivers which implement their own interrupt handling. 277 */ 278 irqreturn_t(*irq_handler) (int irq, void *arg); 279 280 /** 281 * @irq_preinstall: 282 * 283 * Optional callback used by drm_irq_install() which is called before 284 * the interrupt handler is registered. This should be used to clear out 285 * any pending interrupts (from e.g. firmware based drives) and reset 286 * the interrupt handling registers. 287 */ 288 void (*irq_preinstall) (struct drm_device *dev); 289 290 /** 291 * @irq_postinstall: 292 * 293 * Optional callback used by drm_irq_install() which is called after 294 * the interrupt handler is registered. This should be used to enable 295 * interrupt generation in the hardware. 296 */ 297 int (*irq_postinstall) (struct drm_device *dev); 298 299 /** 300 * @irq_uninstall: 301 * 302 * Optional callback used by drm_irq_uninstall() which is called before 303 * the interrupt handler is unregistered. This should be used to disable 304 * interrupt generation in the hardware. 305 */ 306 void (*irq_uninstall) (struct drm_device *dev); 307 308 /** 309 * @master_set: 310 * 311 * Called whenever the minor master is set. Only used by vmwgfx. 312 */ 313 void (*master_set)(struct drm_device *dev, struct drm_file *file_priv, 314 bool from_open); 315 /** 316 * @master_drop: 317 * 318 * Called whenever the minor master is dropped. Only used by vmwgfx. 319 */ 320 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv); 321 322 /** 323 * @debugfs_init: 324 * 325 * Allows drivers to create driver-specific debugfs files. 326 */ 327 void (*debugfs_init)(struct drm_minor *minor); 328 329 /** 330 * @gem_free_object_unlocked: deconstructor for drm_gem_objects 331 * 332 * This is deprecated and should not be used by new drivers. Use 333 * &drm_gem_object_funcs.free instead. 334 */ 335 void (*gem_free_object_unlocked) (struct drm_gem_object *obj); 336 337 /** 338 * @gem_open_object: 339 * 340 * This callback is deprecated in favour of &drm_gem_object_funcs.open. 341 * 342 * Driver hook called upon gem handle creation 343 */ 344 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 345 346 /** 347 * @gem_close_object: 348 * 349 * This callback is deprecated in favour of &drm_gem_object_funcs.close. 350 * 351 * Driver hook called upon gem handle release 352 */ 353 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 354 355 /** 356 * @gem_create_object: constructor for gem objects 357 * 358 * Hook for allocating the GEM object struct, for use by the CMA and 359 * SHMEM GEM helpers. 360 */ 361 struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, 362 size_t size); 363 /** 364 * @prime_handle_to_fd: 365 * 366 * Main PRIME export function. Should be implemented with 367 * drm_gem_prime_handle_to_fd() for GEM based drivers. 368 * 369 * For an in-depth discussion see :ref:`PRIME buffer sharing 370 * documentation <prime_buffer_sharing>`. 371 */ 372 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv, 373 uint32_t handle, uint32_t flags, int *prime_fd); 374 /** 375 * @prime_fd_to_handle: 376 * 377 * Main PRIME import function. Should be implemented with 378 * drm_gem_prime_fd_to_handle() for GEM based drivers. 379 * 380 * For an in-depth discussion see :ref:`PRIME buffer sharing 381 * documentation <prime_buffer_sharing>`. 382 */ 383 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, 384 int prime_fd, uint32_t *handle); 385 /** 386 * @gem_prime_export: 387 * 388 * Export hook for GEM drivers. Deprecated in favour of 389 * &drm_gem_object_funcs.export. 390 */ 391 struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, 392 int flags); 393 /** 394 * @gem_prime_import: 395 * 396 * Import hook for GEM drivers. 397 * 398 * This defaults to drm_gem_prime_import() if not set. 399 */ 400 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, 401 struct dma_buf *dma_buf); 402 403 /** 404 * @gem_prime_pin: 405 * 406 * Deprecated hook in favour of &drm_gem_object_funcs.pin. 407 */ 408 int (*gem_prime_pin)(struct drm_gem_object *obj); 409 410 /** 411 * @gem_prime_unpin: 412 * 413 * Deprecated hook in favour of &drm_gem_object_funcs.unpin. 414 */ 415 void (*gem_prime_unpin)(struct drm_gem_object *obj); 416 417 418 /** 419 * @gem_prime_get_sg_table: 420 * 421 * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. 422 */ 423 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); 424 425 /** 426 * @gem_prime_import_sg_table: 427 * 428 * Optional hook used by the PRIME helper functions 429 * drm_gem_prime_import() respectively drm_gem_prime_import_dev(). 430 */ 431 struct drm_gem_object *(*gem_prime_import_sg_table)( 432 struct drm_device *dev, 433 struct dma_buf_attachment *attach, 434 struct sg_table *sgt); 435 /** 436 * @gem_prime_vmap: 437 * 438 * Deprecated vmap hook for GEM drivers. Please use 439 * &drm_gem_object_funcs.vmap instead. 440 */ 441 void *(*gem_prime_vmap)(struct drm_gem_object *obj); 442 443 /** 444 * @gem_prime_vunmap: 445 * 446 * Deprecated vunmap hook for GEM drivers. Please use 447 * &drm_gem_object_funcs.vunmap instead. 448 */ 449 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); 450 451 /** 452 * @gem_prime_mmap: 453 * 454 * mmap hook for GEM drivers, used to implement dma-buf mmap in the 455 * PRIME helpers. 456 * 457 * FIXME: There's way too much duplication going on here, and also moved 458 * to &drm_gem_object_funcs. 459 */ 460 int (*gem_prime_mmap)(struct drm_gem_object *obj, 461 struct vm_area_struct *vma); 462 463 /** 464 * @dumb_create: 465 * 466 * This creates a new dumb buffer in the driver's backing storage manager (GEM, 467 * TTM or something else entirely) and returns the resulting buffer handle. This 468 * handle can then be wrapped up into a framebuffer modeset object. 469 * 470 * Note that userspace is not allowed to use such objects for render 471 * acceleration - drivers must create their own private ioctls for such a use 472 * case. 473 * 474 * Width, height and depth are specified in the &drm_mode_create_dumb 475 * argument. The callback needs to fill the handle, pitch and size for 476 * the created buffer. 477 * 478 * Called by the user via ioctl. 479 * 480 * Returns: 481 * 482 * Zero on success, negative errno on failure. 483 */ 484 int (*dumb_create)(struct drm_file *file_priv, 485 struct drm_device *dev, 486 struct drm_mode_create_dumb *args); 487 /** 488 * @dumb_map_offset: 489 * 490 * Allocate an offset in the drm device node's address space to be able to 491 * memory map a dumb buffer. 492 * 493 * The default implementation is drm_gem_create_mmap_offset(). GEM based 494 * drivers must not overwrite this. 495 * 496 * Called by the user via ioctl. 497 * 498 * Returns: 499 * 500 * Zero on success, negative errno on failure. 501 */ 502 int (*dumb_map_offset)(struct drm_file *file_priv, 503 struct drm_device *dev, uint32_t handle, 504 uint64_t *offset); 505 /** 506 * @dumb_destroy: 507 * 508 * This destroys the userspace handle for the given dumb backing storage buffer. 509 * Since buffer objects must be reference counted in the kernel a buffer object 510 * won't be immediately freed if a framebuffer modeset object still uses it. 511 * 512 * Called by the user via ioctl. 513 * 514 * The default implementation is drm_gem_dumb_destroy(). GEM based drivers 515 * must not overwrite this. 516 * 517 * Returns: 518 * 519 * Zero on success, negative errno on failure. 520 */ 521 int (*dumb_destroy)(struct drm_file *file_priv, 522 struct drm_device *dev, 523 uint32_t handle); 524 525 /** 526 * @gem_vm_ops: Driver private ops for this object 527 * 528 * For GEM drivers this is deprecated in favour of 529 * &drm_gem_object_funcs.vm_ops. 530 */ 531 const struct vm_operations_struct *gem_vm_ops; 532 533 /** @major: driver major number */ 534 int major; 535 /** @minor: driver minor number */ 536 int minor; 537 /** @patchlevel: driver patch level */ 538 int patchlevel; 539 /** @name: driver name */ 540 char *name; 541 /** @desc: driver description */ 542 char *desc; 543 /** @date: driver date */ 544 char *date; 545 546 /** 547 * @driver_features: 548 * Driver features, see &enum drm_driver_feature. Drivers can disable 549 * some features on a per-instance basis using 550 * &drm_device.driver_features. 551 */ 552 u32 driver_features; 553 554 /** 555 * @ioctls: 556 * 557 * Array of driver-private IOCTL description entries. See the chapter on 558 * :ref:`IOCTL support in the userland interfaces 559 * chapter<drm_driver_ioctl>` for the full details. 560 */ 561 562 const struct drm_ioctl_desc *ioctls; 563 /** @num_ioctls: Number of entries in @ioctls. */ 564 int num_ioctls; 565 566 /** 567 * @fops: 568 * 569 * File operations for the DRM device node. See the discussion in 570 * :ref:`file operations<drm_driver_fops>` for in-depth coverage and 571 * some examples. 572 */ 573 const struct file_operations *fops; 574 575 /* Everything below here is for legacy driver, never use! */ 576 /* private: */ 577 578 /* List of devices hanging off this driver with stealth attach. */ 579 struct list_head legacy_dev_list; 580 int (*firstopen) (struct drm_device *); 581 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 582 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 583 int (*dma_quiescent) (struct drm_device *); 584 int (*context_dtor) (struct drm_device *dev, int context); 585 u32 (*get_vblank_counter)(struct drm_device *dev, unsigned int pipe); 586 int (*enable_vblank)(struct drm_device *dev, unsigned int pipe); 587 void (*disable_vblank)(struct drm_device *dev, unsigned int pipe); 588 int dev_priv_size; 589 }; 590 591 void *__devm_drm_dev_alloc(struct device *parent, struct drm_driver *driver, 592 size_t size, size_t offset); 593 594 /** 595 * devm_drm_dev_alloc - Resource managed allocation of a &drm_device instance 596 * @parent: Parent device object 597 * @driver: DRM driver 598 * @type: the type of the struct which contains struct &drm_device 599 * @member: the name of the &drm_device within @type. 600 * 601 * This allocates and initialize a new DRM device. No device registration is done. 602 * Call drm_dev_register() to advertice the device to user space and register it 603 * with other core subsystems. This should be done last in the device 604 * initialization sequence to make sure userspace can't access an inconsistent 605 * state. 606 * 607 * The initial ref-count of the object is 1. Use drm_dev_get() and 608 * drm_dev_put() to take and drop further ref-counts. 609 * 610 * It is recommended that drivers embed &struct drm_device into their own device 611 * structure. 612 * 613 * Note that this manages the lifetime of the resulting &drm_device 614 * automatically using devres. The DRM device initialized with this function is 615 * automatically put on driver detach using drm_dev_put(). 616 * 617 * RETURNS: 618 * Pointer to new DRM device, or ERR_PTR on failure. 619 */ 620 #define devm_drm_dev_alloc(parent, driver, type, member) \ 621 ((type *) __devm_drm_dev_alloc(parent, driver, sizeof(type), \ 622 offsetof(type, member))) 623 624 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 625 struct device *parent); 626 int drm_dev_register(struct drm_device *dev, unsigned long flags); 627 void drm_dev_unregister(struct drm_device *dev); 628 629 void drm_dev_get(struct drm_device *dev); 630 void drm_dev_put(struct drm_device *dev); 631 void drm_put_dev(struct drm_device *dev); 632 bool drm_dev_enter(struct drm_device *dev, int *idx); 633 void drm_dev_exit(int idx); 634 void drm_dev_unplug(struct drm_device *dev); 635 636 /** 637 * drm_dev_is_unplugged - is a DRM device unplugged 638 * @dev: DRM device 639 * 640 * This function can be called to check whether a hotpluggable is unplugged. 641 * Unplugging itself is singalled through drm_dev_unplug(). If a device is 642 * unplugged, these two functions guarantee that any store before calling 643 * drm_dev_unplug() is visible to callers of this function after it completes 644 * 645 * WARNING: This function fundamentally races against drm_dev_unplug(). It is 646 * recommended that drivers instead use the underlying drm_dev_enter() and 647 * drm_dev_exit() function pairs. 648 */ 649 static inline bool drm_dev_is_unplugged(struct drm_device *dev) 650 { 651 int idx; 652 653 if (drm_dev_enter(dev, &idx)) { 654 drm_dev_exit(idx); 655 return false; 656 } 657 658 return true; 659 } 660 661 /** 662 * drm_core_check_all_features - check driver feature flags mask 663 * @dev: DRM device to check 664 * @features: feature flag(s) mask 665 * 666 * This checks @dev for driver features, see &drm_driver.driver_features, 667 * &drm_device.driver_features, and the various &enum drm_driver_feature flags. 668 * 669 * Returns true if all features in the @features mask are supported, false 670 * otherwise. 671 */ 672 static inline bool drm_core_check_all_features(const struct drm_device *dev, 673 u32 features) 674 { 675 u32 supported = dev->driver->driver_features & dev->driver_features; 676 677 return features && (supported & features) == features; 678 } 679 680 /** 681 * drm_core_check_feature - check driver feature flags 682 * @dev: DRM device to check 683 * @feature: feature flag 684 * 685 * This checks @dev for driver features, see &drm_driver.driver_features, 686 * &drm_device.driver_features, and the various &enum drm_driver_feature flags. 687 * 688 * Returns true if the @feature is supported, false otherwise. 689 */ 690 static inline bool drm_core_check_feature(const struct drm_device *dev, 691 enum drm_driver_feature feature) 692 { 693 return drm_core_check_all_features(dev, feature); 694 } 695 696 /** 697 * drm_drv_uses_atomic_modeset - check if the driver implements 698 * atomic_commit() 699 * @dev: DRM device 700 * 701 * This check is useful if drivers do not have DRIVER_ATOMIC set but 702 * have atomic modesetting internally implemented. 703 */ 704 static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev) 705 { 706 return drm_core_check_feature(dev, DRIVER_ATOMIC) || 707 (dev->mode_config.funcs && dev->mode_config.funcs->atomic_commit != NULL); 708 } 709 710 711 int drm_dev_set_unique(struct drm_device *dev, const char *name); 712 713 714 #endif 715