include/drm/drm_fb_helper.h

   1 /*
   2  * Copyright (c) 2006-2009 Red Hat Inc.
   3  * Copyright (c) 2006-2008 Intel Corporation
   4  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   5  *
   6  * DRM framebuffer helper functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Dave Airlie <airlied@linux.ie>
  28  *      Jesse Barnes <jesse.barnes@intel.com>
  29  */
  30 #ifndef DRM_FB_HELPER_H
  31 #define DRM_FB_HELPER_H
  32
  33 struct drm_fb_helper;
  34
  35 #include <drm/drm_client.h>
  36 #include <drm/drm_crtc.h>
  37 #include <drm/drm_device.h>
  38 #include <linux/kgdb.h>
  39
  40 enum mode_set_atomic {
  41         LEAVE_ATOMIC_MODE_SET,
  42         ENTER_ATOMIC_MODE_SET,
  43 };
  44
  45 struct drm_fb_offset {
  46         int x, y;
  47 };
  48
  49 struct drm_fb_helper_crtc {
  50         struct drm_mode_set mode_set;
  51         struct drm_display_mode *desired_mode;
  52         int x, y;
  53         int rotation;
  54 };
  55
  56 /**
  57  * struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size
  58  * @fb_width: fbdev width
  59  * @fb_height: fbdev height
  60  * @surface_width: scanout buffer width
  61  * @surface_height: scanout buffer height
  62  * @surface_bpp: scanout buffer bpp
  63  * @surface_depth: scanout buffer depth
  64  *
  65  * Note that the scanout surface width/height may be larger than the fbdev
  66  * width/height.  In case of multiple displays, the scanout surface is sized
  67  * according to the largest width/height (so it is large enough for all CRTCs
  68  * to scanout).  But the fbdev width/height is sized to the minimum width/
  69  * height of all the displays.  This ensures that fbcon fits on the smallest
  70  * of the attached displays.
  71  *
  72  * So what is passed to drm_fb_helper_fill_var() should be fb_width/fb_height,
  73  * rather than the surface size.
  74  */
  75 struct drm_fb_helper_surface_size {
  76         u32 fb_width;
  77         u32 fb_height;
  78         u32 surface_width;
  79         u32 surface_height;
  80         u32 surface_bpp;
  81         u32 surface_depth;
  82 };
  83
  84 /**
  85  * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
  86  *
  87  * Driver callbacks used by the fbdev emulation helper library.
  88  */
  89 struct drm_fb_helper_funcs {
  90         /**
  91          * @fb_probe:
  92          *
  93          * Driver callback to allocate and initialize the fbdev info structure.
  94          * Furthermore it also needs to allocate the DRM framebuffer used to
  95          * back the fbdev.
  96          *
  97          * This callback is mandatory.
  98          *
  99          * RETURNS:
 100          *
 101          * The driver should return 0 on success and a negative error code on
 102          * failure.
 103          */
 104         int (*fb_probe)(struct drm_fb_helper *helper,
 105                         struct drm_fb_helper_surface_size *sizes);
 106
 107         /**
 108          * @initial_config:
 109          *
 110          * Driver callback to setup an initial fbdev display configuration.
 111          * Drivers can use this callback to tell the fbdev emulation what the
 112          * preferred initial configuration is. This is useful to implement
 113          * smooth booting where the fbdev (and subsequently all userspace) never
 114          * changes the mode, but always inherits the existing configuration.
 115          *
 116          * This callback is optional.
 117          *
 118          * RETURNS:
 119          *
 120          * The driver should return true if a suitable initial configuration has
 121          * been filled out and false when the fbdev helper should fall back to
 122          * the default probing logic.
 123          */
 124         bool (*initial_config)(struct drm_fb_helper *fb_helper,
 125                                struct drm_fb_helper_crtc **crtcs,
 126                                struct drm_display_mode **modes,
 127                                struct drm_fb_offset *offsets,
 128                                bool *enabled, int width, int height);
 129 };
 130
 131 struct drm_fb_helper_connector {
 132         struct drm_connector *connector;
 133 };
 134
 135 /**
 136  * struct drm_fb_helper - main structure to emulate fbdev on top of KMS
 137  * @fb: Scanout framebuffer object
 138  * @dev: DRM device
 139  * @crtc_count: number of possible CRTCs
 140  * @crtc_info: per-CRTC helper state (mode, x/y offset, etc)
 141  * @connector_count: number of connected connectors
 142  * @connector_info_alloc_count: size of connector_info
 143  * @funcs: driver callbacks for fb helper
 144  * @fbdev: emulated fbdev device info struct
 145  * @pseudo_palette: fake palette of 16 colors
 146  * @dirty_clip: clip rectangle used with deferred_io to accumulate damage to
 147  *              the screen buffer
 148  * @dirty_lock: spinlock protecting @dirty_clip
 149  * @dirty_work: worker used to flush the framebuffer
 150  * @resume_work: worker used during resume if the console lock is already taken
 151  *
 152  * This is the main structure used by the fbdev helpers. Drivers supporting
 153  * fbdev emulation should embedded this into their overall driver structure.
 154  * Drivers must also fill out a &struct drm_fb_helper_funcs with a few
 155  * operations.
 156  */
 157 struct drm_fb_helper {
 158         /**
 159          * @client:
 160          *
 161          * DRM client used by the generic fbdev emulation.
 162          */
 163         struct drm_client_dev client;
 164
 165         /**
 166          * @buffer:
 167          *
 168          * Framebuffer used by the generic fbdev emulation.
 169          */
 170         struct drm_client_buffer *buffer;
 171
 172         struct drm_framebuffer *fb;
 173         struct drm_device *dev;
 174         int crtc_count;
 175         struct drm_fb_helper_crtc *crtc_info;
 176         int connector_count;
 177         int connector_info_alloc_count;
 178         /**
 179          * @sw_rotations:
 180          * Bitmask of all rotations requested for panel-orientation which
 181          * could not be handled in hardware. If only one bit is set
 182          * fbdev->fbcon_rotate_hint gets set to the requested rotation.
 183          */
 184         int sw_rotations;
 185         /**
 186          * @connector_info:
 187          *
 188          * Array of per-connector information. Do not iterate directly, but use
 189          * drm_fb_helper_for_each_connector.
 190          */
 191         struct drm_fb_helper_connector **connector_info;
 192         const struct drm_fb_helper_funcs *funcs;
 193         struct fb_info *fbdev;
 194         u32 pseudo_palette[17];
 195         struct drm_clip_rect dirty_clip;
 196         spinlock_t dirty_lock;
 197         struct work_struct dirty_work;
 198         struct work_struct resume_work;
 199
 200         /**
 201          * @lock:
 202          *
 203          * Top-level FBDEV helper lock. This protects all internal data
 204          * structures and lists, such as @connector_info and @crtc_info.
 205          *
 206          * FIXME: fbdev emulation locking is a mess and long term we want to
 207          * protect all helper internal state with this lock as well as reduce
 208          * core KMS locking as much as possible.
 209          */
 210         struct mutex lock;
 211
 212         /**
 213          * @kernel_fb_list:
 214          *
 215          * Entry on the global kernel_fb_helper_list, used for kgdb entry/exit.
 216          */
 217         struct list_head kernel_fb_list;
 218
 219         /**
 220          * @delayed_hotplug:
 221          *
 222          * A hotplug was received while fbdev wasn't in control of the DRM
 223          * device, i.e. another KMS master was active. The output configuration
 224          * needs to be reprobe when fbdev is in control again.
 225          */
 226         bool delayed_hotplug;
 227
 228         /**
 229          * @deferred_setup:
 230          *
 231          * If no outputs are connected (disconnected or unknown) the FB helper
 232          * code will defer setup until at least one of the outputs shows up.
 233          * This field keeps track of the status so that setup can be retried
 234          * at every hotplug event until it succeeds eventually.
 235          *
 236          * Protected by @lock.
 237          */
 238         bool deferred_setup;
 239
 240         /**
 241          * @preferred_bpp:
 242          *
 243          * Temporary storage for the driver's preferred BPP setting passed to
 244          * FB helper initialization. This needs to be tracked so that deferred
 245          * FB helper setup can pass this on.
 246          *
 247          * See also: @deferred_setup
 248          */
 249         int preferred_bpp;
 250 };
 251
 252 static inline struct drm_fb_helper *
 253 drm_fb_helper_from_client(struct drm_client_dev *client)
 254 {
 255         return container_of(client, struct drm_fb_helper, client);
 256 }
 257
 258 /**
 259  * define DRM_FB_HELPER_DEFAULT_OPS - helper define for drm drivers
 260  *
 261  * Helper define to register default implementations of drm_fb_helper
 262  * functions. To be used in struct fb_ops of drm drivers.
 263  */
 264 #define DRM_FB_HELPER_DEFAULT_OPS \
 265         .fb_check_var   = drm_fb_helper_check_var, \
 266         .fb_set_par     = drm_fb_helper_set_par, \
 267         .fb_setcmap     = drm_fb_helper_setcmap, \
 268         .fb_blank       = drm_fb_helper_blank, \
 269         .fb_pan_display = drm_fb_helper_pan_display, \
 270         .fb_debug_enter = drm_fb_helper_debug_enter, \
 271         .fb_debug_leave = drm_fb_helper_debug_leave, \
 272         .fb_ioctl       = drm_fb_helper_ioctl
 273
 274 #ifdef CONFIG_DRM_FBDEV_EMULATION
 275 void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
 276                            const struct drm_fb_helper_funcs *funcs);
 277 int drm_fb_helper_init(struct drm_device *dev,
 278                        struct drm_fb_helper *helper, int max_conn);
 279 void drm_fb_helper_fini(struct drm_fb_helper *helper);
 280 int drm_fb_helper_blank(int blank, struct fb_info *info);
 281 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 282                               struct fb_info *info);
 283 int drm_fb_helper_set_par(struct fb_info *info);
 284 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 285                             struct fb_info *info);
 286
 287 int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
 288
 289 struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
 290 void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
 291 void drm_fb_helper_fill_info(struct fb_info *info,
 292                              struct drm_fb_helper *fb_helper,
 293                              struct drm_fb_helper_surface_size *sizes);
 294
 295 void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
 296
 297 void drm_fb_helper_deferred_io(struct fb_info *info,
 298                                struct list_head *pagelist);
 299 int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper);
 300
 301 ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
 302                                size_t count, loff_t *ppos);
 303 ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 304                                 size_t count, loff_t *ppos);
 305
 306 void drm_fb_helper_sys_fillrect(struct fb_info *info,
 307                                 const struct fb_fillrect *rect);
 308 void drm_fb_helper_sys_copyarea(struct fb_info *info,
 309                                 const struct fb_copyarea *area);
 310 void drm_fb_helper_sys_imageblit(struct fb_info *info,
 311                                  const struct fb_image *image);
 312
 313 void drm_fb_helper_cfb_fillrect(struct fb_info *info,
 314                                 const struct fb_fillrect *rect);
 315 void drm_fb_helper_cfb_copyarea(struct fb_info *info,
 316                                 const struct fb_copyarea *area);
 317 void drm_fb_helper_cfb_imageblit(struct fb_info *info,
 318                                  const struct fb_image *image);
 319
 320 void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend);
 321 void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
 322                                         bool suspend);
 323
 324 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 325
 326 int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
 327                         unsigned long arg);
 328
 329 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
 330 int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
 331 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
 332 int drm_fb_helper_debug_enter(struct fb_info *info);
 333 int drm_fb_helper_debug_leave(struct fb_info *info);
 334 struct drm_display_mode *
 335 drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
 336                         int width, int height);
 337 struct drm_display_mode *
 338 drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn);
 339
 340 int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector);
 341 int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
 342                                        struct drm_connector *connector);
 343
 344 int drm_fb_helper_fbdev_setup(struct drm_device *dev,
 345                               struct drm_fb_helper *fb_helper,
 346                               const struct drm_fb_helper_funcs *funcs,
 347                               unsigned int preferred_bpp,
 348                               unsigned int max_conn_count);
 349 void drm_fb_helper_fbdev_teardown(struct drm_device *dev);
 350
 351 void drm_fb_helper_lastclose(struct drm_device *dev);
 352 void drm_fb_helper_output_poll_changed(struct drm_device *dev);
 353
 354 int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 355                                 struct drm_fb_helper_surface_size *sizes);
 356 int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp);
 357 #else
 358 static inline void drm_fb_helper_prepare(struct drm_device *dev,
 359                                         struct drm_fb_helper *helper,
 360                                         const struct drm_fb_helper_funcs *funcs)
 361 {
 362 }
 363
 364 static inline int drm_fb_helper_init(struct drm_device *dev,
 365                        struct drm_fb_helper *helper,
 366                        int max_conn)
 367 {
 368         /* So drivers can use it to free the struct */
 369         helper->dev = dev;
 370         dev->fb_helper = helper;
 371
 372         return 0;
 373 }
 374
 375 static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)
 376 {
 377         if (helper && helper->dev)
 378                 helper->dev->fb_helper = NULL;
 379 }
 380
 381 static inline int drm_fb_helper_blank(int blank, struct fb_info *info)
 382 {
 383         return 0;
 384 }
 385
 386 static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
 387                                             struct fb_info *info)
 388 {
 389         return 0;
 390 }
 391
 392 static inline int drm_fb_helper_set_par(struct fb_info *info)
 393 {
 394         return 0;
 395 }
 396
 397 static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 398                                           struct fb_info *info)
 399 {
 400         return 0;
 401 }
 402
 403 static inline int
 404 drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
 405 {
 406         return 0;
 407 }
 408
 409 static inline struct fb_info *
 410 drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
 411 {
 412         return NULL;
 413 }
 414
 415 static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
 416 {
 417 }
 418
 419 static inline void drm_fb_helper_fill_var(struct fb_info *info,
 420                                           struct drm_fb_helper *fb_helper,
 421                                           uint32_t fb_width, uint32_t fb_height)
 422 {
 423 }
 424
 425 static inline void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 426                                           uint32_t depth)
 427 {
 428 }
 429
 430 static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,
 431                                         struct fb_info *info)
 432 {
 433         return 0;
 434 }
 435
 436 static inline int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
 437                                       unsigned long arg)
 438 {
 439         return 0;
 440 }
 441
 442 static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
 443 {
 444 }
 445
 446 static inline void drm_fb_helper_deferred_io(struct fb_info *info,
 447                                              struct list_head *pagelist)
 448 {
 449 }
 450
 451 static inline int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper)
 452 {
 453         return -ENODEV;
 454 }
 455
 456 static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,
 457                                              char __user *buf, size_t count,
 458                                              loff_t *ppos)
 459 {
 460         return -ENODEV;
 461 }
 462
 463 static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,
 464                                               const char __user *buf,
 465                                               size_t count, loff_t *ppos)
 466 {
 467         return -ENODEV;
 468 }
 469
 470 static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,
 471                                               const struct fb_fillrect *rect)
 472 {
 473 }
 474
 475 static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,
 476                                               const struct fb_copyarea *area)
 477 {
 478 }
 479
 480 static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
 481                                                const struct fb_image *image)
 482 {
 483 }
 484
 485 static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
 486                                               const struct fb_fillrect *rect)
 487 {
 488 }
 489
 490 static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,
 491                                               const struct fb_copyarea *area)
 492 {
 493 }
 494
 495 static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,
 496                                                const struct fb_image *image)
 497 {
 498 }
 499
 500 static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
 501                                              bool suspend)
 502 {
 503 }
 504
 505 static inline void
 506 drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper, bool suspend)
 507 {
 508 }
 509
 510 static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
 511 {
 512         return 0;
 513 }
 514
 515 static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,
 516                                                int bpp_sel)
 517 {
 518         return 0;
 519 }
 520
 521 static inline int
 522 drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
 523 {
 524         return 0;
 525 }
 526
 527 static inline int drm_fb_helper_debug_enter(struct fb_info *info)
 528 {
 529         return 0;
 530 }
 531
 532 static inline int drm_fb_helper_debug_leave(struct fb_info *info)
 533 {
 534         return 0;
 535 }
 536
 537 static inline struct drm_display_mode *
 538 drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector,
 539                        int width, int height)
 540 {
 541         return NULL;
 542 }
 543
 544 static inline struct drm_display_mode *
 545 drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
 546                       int width, int height)
 547 {
 548         return NULL;
 549 }
 550
 551 static inline int
 552 drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
 553                                 struct drm_connector *connector)
 554 {
 555         return 0;
 556 }
 557
 558 static inline int
 559 drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
 560                                    struct drm_connector *connector)
 561 {
 562         return 0;
 563 }
 564
 565 static inline int
 566 drm_fb_helper_fbdev_setup(struct drm_device *dev,
 567                           struct drm_fb_helper *fb_helper,
 568                           const struct drm_fb_helper_funcs *funcs,
 569                           unsigned int preferred_bpp,
 570                           unsigned int max_conn_count)
 571 {
 572         /* So drivers can use it to free the struct */
 573         dev->fb_helper = fb_helper;
 574
 575         return 0;
 576 }
 577
 578 static inline void drm_fb_helper_fbdev_teardown(struct drm_device *dev)
 579 {
 580         dev->fb_helper = NULL;
 581 }
 582
 583 static inline void drm_fb_helper_lastclose(struct drm_device *dev)
 584 {
 585 }
 586
 587 static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev)
 588 {
 589 }
 590
 591 static inline int
 592 drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 593                             struct drm_fb_helper_surface_size *sizes)
 594 {
 595         return 0;
 596 }
 597
 598 static inline int
 599 drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
 600 {
 601         return 0;
 602 }
 603
 604 #endif
 605
 606 /**
 607  * drm_fb_helper_remove_conflicting_framebuffers - remove firmware-configured framebuffers
 608  * @a: memory range, users of which are to be removed
 609  * @name: requesting driver name
 610  * @primary: also kick vga16fb if present
 611  *
 612  * This function removes framebuffer devices (initialized by firmware/bootloader)
 613  * which use memory range described by @a. If @a is NULL all such devices are
 614  * removed.
 615  */
 616 static inline int
 617 drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
 618                                               const char *name, bool primary)
 619 {
 620 #if IS_REACHABLE(CONFIG_FB)
 621         return remove_conflicting_framebuffers(a, name, primary);
 622 #else
 623         return 0;
 624 #endif
 625 }
 626
 627 /**
 628  * drm_fb_helper_remove_conflicting_pci_framebuffers - remove firmware-configured framebuffers for PCI devices
 629  * @pdev: PCI device
 630  * @resource_id: index of PCI BAR configuring framebuffer memory
 631  * @name: requesting driver name
 632  *
 633  * This function removes framebuffer devices (eg. initialized by firmware)
 634  * using memory range configured for @pdev's BAR @resource_id.
 635  *
 636  * The function assumes that PCI device with shadowed ROM drives a primary
 637  * display and so kicks out vga16fb.
 638  */
 639 static inline int
 640 drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
 641                                                   int resource_id,
 642                                                   const char *name)
 643 {
 644 #if IS_REACHABLE(CONFIG_FB)
 645         return remove_conflicting_pci_framebuffers(pdev, resource_id, name);
 646 #else
 647         return 0;
 648 #endif
 649 }
 650
 651 #endif