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 */
drm_dev_is_unplugged(struct drm_device * dev)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 */
drm_core_check_all_features(const struct drm_device * dev,u32 features)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 */
drm_core_check_feature(const struct drm_device * dev,enum drm_driver_feature feature)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 */
drm_drv_uses_atomic_modeset(struct drm_device * dev)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
