1 /*
2 * Copyright © 2007 David Airlie
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * David Airlie
25 */
26
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/string.h>
31 #include <linux/mm.h>
32 #include <linux/tty.h>
33 #include <linux/sysrq.h>
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/screen_info.h>
37 #include <linux/vga_switcheroo.h>
38 #include <linux/console.h>
39
40 #include <drm/drm_crtc.h>
41 #include <drm/drm_crtc_helper.h>
42 #include <drm/drm_fb_helper.h>
43 #include <drm/drm_fourcc.h>
44 #include <drm/drm_atomic.h>
45
46 #include "nouveau_drv.h"
47 #include "nouveau_gem.h"
48 #include "nouveau_bo.h"
49 #include "nouveau_fbcon.h"
50 #include "nouveau_chan.h"
51 #include "nouveau_vmm.h"
52
53 #include "nouveau_crtc.h"
54
55 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
56 int nouveau_nofbaccel = 0;
57 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
58
59 MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
60 static int nouveau_fbcon_bpp;
61 module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
62
63 static void
nouveau_fbcon_fillrect(struct fb_info * info,const struct fb_fillrect * rect)64 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
65 {
66 struct nouveau_fbdev *fbcon = info->par;
67 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
68 struct nvif_device *device = &drm->client.device;
69 int ret;
70
71 if (info->state != FBINFO_STATE_RUNNING)
72 return;
73
74 ret = -ENODEV;
75 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
76 mutex_trylock(&drm->client.mutex)) {
77 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
78 ret = nv04_fbcon_fillrect(info, rect);
79 else
80 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
81 ret = nv50_fbcon_fillrect(info, rect);
82 else
83 ret = nvc0_fbcon_fillrect(info, rect);
84 mutex_unlock(&drm->client.mutex);
85 }
86
87 if (ret == 0)
88 return;
89
90 if (ret != -ENODEV)
91 nouveau_fbcon_gpu_lockup(info);
92 drm_fb_helper_cfb_fillrect(info, rect);
93 }
94
95 static void
nouveau_fbcon_copyarea(struct fb_info * info,const struct fb_copyarea * image)96 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
97 {
98 struct nouveau_fbdev *fbcon = info->par;
99 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
100 struct nvif_device *device = &drm->client.device;
101 int ret;
102
103 if (info->state != FBINFO_STATE_RUNNING)
104 return;
105
106 ret = -ENODEV;
107 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
108 mutex_trylock(&drm->client.mutex)) {
109 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
110 ret = nv04_fbcon_copyarea(info, image);
111 else
112 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
113 ret = nv50_fbcon_copyarea(info, image);
114 else
115 ret = nvc0_fbcon_copyarea(info, image);
116 mutex_unlock(&drm->client.mutex);
117 }
118
119 if (ret == 0)
120 return;
121
122 if (ret != -ENODEV)
123 nouveau_fbcon_gpu_lockup(info);
124 drm_fb_helper_cfb_copyarea(info, image);
125 }
126
127 static void
nouveau_fbcon_imageblit(struct fb_info * info,const struct fb_image * image)128 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
129 {
130 struct nouveau_fbdev *fbcon = info->par;
131 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
132 struct nvif_device *device = &drm->client.device;
133 int ret;
134
135 if (info->state != FBINFO_STATE_RUNNING)
136 return;
137
138 ret = -ENODEV;
139 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
140 mutex_trylock(&drm->client.mutex)) {
141 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
142 ret = nv04_fbcon_imageblit(info, image);
143 else
144 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
145 ret = nv50_fbcon_imageblit(info, image);
146 else
147 ret = nvc0_fbcon_imageblit(info, image);
148 mutex_unlock(&drm->client.mutex);
149 }
150
151 if (ret == 0)
152 return;
153
154 if (ret != -ENODEV)
155 nouveau_fbcon_gpu_lockup(info);
156 drm_fb_helper_cfb_imageblit(info, image);
157 }
158
159 static int
nouveau_fbcon_sync(struct fb_info * info)160 nouveau_fbcon_sync(struct fb_info *info)
161 {
162 struct nouveau_fbdev *fbcon = info->par;
163 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
164 struct nouveau_channel *chan = drm->channel;
165 int ret;
166
167 if (!chan || !chan->accel_done || in_interrupt() ||
168 info->state != FBINFO_STATE_RUNNING ||
169 info->flags & FBINFO_HWACCEL_DISABLED)
170 return 0;
171
172 if (!mutex_trylock(&drm->client.mutex))
173 return 0;
174
175 ret = nouveau_channel_idle(chan);
176 mutex_unlock(&drm->client.mutex);
177 if (ret) {
178 nouveau_fbcon_gpu_lockup(info);
179 return 0;
180 }
181
182 chan->accel_done = false;
183 return 0;
184 }
185
186 static int
nouveau_fbcon_open(struct fb_info * info,int user)187 nouveau_fbcon_open(struct fb_info *info, int user)
188 {
189 struct nouveau_fbdev *fbcon = info->par;
190 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
191 int ret = pm_runtime_get_sync(drm->dev->dev);
192 if (ret < 0 && ret != -EACCES) {
193 pm_runtime_put(drm->dev->dev);
194 return ret;
195 }
196 return 0;
197 }
198
199 static int
nouveau_fbcon_release(struct fb_info * info,int user)200 nouveau_fbcon_release(struct fb_info *info, int user)
201 {
202 struct nouveau_fbdev *fbcon = info->par;
203 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
204 pm_runtime_put(drm->dev->dev);
205 return 0;
206 }
207
208 static const struct fb_ops nouveau_fbcon_ops = {
209 .owner = THIS_MODULE,
210 DRM_FB_HELPER_DEFAULT_OPS,
211 .fb_open = nouveau_fbcon_open,
212 .fb_release = nouveau_fbcon_release,
213 .fb_fillrect = nouveau_fbcon_fillrect,
214 .fb_copyarea = nouveau_fbcon_copyarea,
215 .fb_imageblit = nouveau_fbcon_imageblit,
216 .fb_sync = nouveau_fbcon_sync,
217 };
218
219 static const struct fb_ops nouveau_fbcon_sw_ops = {
220 .owner = THIS_MODULE,
221 DRM_FB_HELPER_DEFAULT_OPS,
222 .fb_open = nouveau_fbcon_open,
223 .fb_release = nouveau_fbcon_release,
224 .fb_fillrect = drm_fb_helper_cfb_fillrect,
225 .fb_copyarea = drm_fb_helper_cfb_copyarea,
226 .fb_imageblit = drm_fb_helper_cfb_imageblit,
227 };
228
229 void
nouveau_fbcon_accel_save_disable(struct drm_device * dev)230 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
231 {
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 if (drm->fbcon && drm->fbcon->helper.fbdev) {
234 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
235 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
236 }
237 }
238
239 void
nouveau_fbcon_accel_restore(struct drm_device * dev)240 nouveau_fbcon_accel_restore(struct drm_device *dev)
241 {
242 struct nouveau_drm *drm = nouveau_drm(dev);
243 if (drm->fbcon && drm->fbcon->helper.fbdev) {
244 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
245 }
246 }
247
248 static void
nouveau_fbcon_accel_fini(struct drm_device * dev)249 nouveau_fbcon_accel_fini(struct drm_device *dev)
250 {
251 struct nouveau_drm *drm = nouveau_drm(dev);
252 struct nouveau_fbdev *fbcon = drm->fbcon;
253 if (fbcon && drm->channel) {
254 console_lock();
255 if (fbcon->helper.fbdev)
256 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
257 console_unlock();
258 nouveau_channel_idle(drm->channel);
259 nvif_object_dtor(&fbcon->twod);
260 nvif_object_dtor(&fbcon->blit);
261 nvif_object_dtor(&fbcon->gdi);
262 nvif_object_dtor(&fbcon->patt);
263 nvif_object_dtor(&fbcon->rop);
264 nvif_object_dtor(&fbcon->clip);
265 nvif_object_dtor(&fbcon->surf2d);
266 }
267 }
268
269 static void
nouveau_fbcon_accel_init(struct drm_device * dev)270 nouveau_fbcon_accel_init(struct drm_device *dev)
271 {
272 struct nouveau_drm *drm = nouveau_drm(dev);
273 struct nouveau_fbdev *fbcon = drm->fbcon;
274 struct fb_info *info = fbcon->helper.fbdev;
275 int ret;
276
277 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
278 ret = nv04_fbcon_accel_init(info);
279 else
280 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
281 ret = nv50_fbcon_accel_init(info);
282 else
283 ret = nvc0_fbcon_accel_init(info);
284
285 if (ret == 0)
286 info->fbops = &nouveau_fbcon_ops;
287 }
288
289 static void
nouveau_fbcon_zfill(struct drm_device * dev,struct nouveau_fbdev * fbcon)290 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
291 {
292 struct fb_info *info = fbcon->helper.fbdev;
293 struct fb_fillrect rect;
294
295 /* Clear the entire fbcon. The drm will program every connector
296 * with it's preferred mode. If the sizes differ, one display will
297 * quite likely have garbage around the console.
298 */
299 rect.dx = rect.dy = 0;
300 rect.width = info->var.xres_virtual;
301 rect.height = info->var.yres_virtual;
302 rect.color = 0;
303 rect.rop = ROP_COPY;
304 info->fbops->fb_fillrect(info, &rect);
305 }
306
307 static int
nouveau_fbcon_create(struct drm_fb_helper * helper,struct drm_fb_helper_surface_size * sizes)308 nouveau_fbcon_create(struct drm_fb_helper *helper,
309 struct drm_fb_helper_surface_size *sizes)
310 {
311 struct nouveau_fbdev *fbcon =
312 container_of(helper, struct nouveau_fbdev, helper);
313 struct drm_device *dev = fbcon->helper.dev;
314 struct nouveau_drm *drm = nouveau_drm(dev);
315 struct nvif_device *device = &drm->client.device;
316 struct fb_info *info;
317 struct drm_framebuffer *fb;
318 struct nouveau_channel *chan;
319 struct nouveau_bo *nvbo;
320 struct drm_mode_fb_cmd2 mode_cmd = {};
321 int ret;
322
323 mode_cmd.width = sizes->surface_width;
324 mode_cmd.height = sizes->surface_height;
325
326 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
327 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
328
329 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
330 sizes->surface_depth);
331
332 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
333 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
334 0, 0x0000, &nvbo);
335 if (ret) {
336 NV_ERROR(drm, "failed to allocate framebuffer\n");
337 goto out;
338 }
339
340 ret = nouveau_framebuffer_new(dev, &mode_cmd, &nvbo->bo.base, &fb);
341 if (ret)
342 goto out_unref;
343
344 ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, false);
345 if (ret) {
346 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
347 goto out_unref;
348 }
349
350 ret = nouveau_bo_map(nvbo);
351 if (ret) {
352 NV_ERROR(drm, "failed to map fb: %d\n", ret);
353 goto out_unpin;
354 }
355
356 chan = nouveau_nofbaccel ? NULL : drm->channel;
357 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
358 ret = nouveau_vma_new(nvbo, chan->vmm, &fbcon->vma);
359 if (ret) {
360 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
361 chan = NULL;
362 }
363 }
364
365 info = drm_fb_helper_alloc_fbi(helper);
366 if (IS_ERR(info)) {
367 ret = PTR_ERR(info);
368 goto out_unlock;
369 }
370
371 /* setup helper */
372 fbcon->helper.fb = fb;
373
374 if (!chan)
375 info->flags = FBINFO_HWACCEL_DISABLED;
376 else
377 info->flags = FBINFO_HWACCEL_COPYAREA |
378 FBINFO_HWACCEL_FILLRECT |
379 FBINFO_HWACCEL_IMAGEBLIT;
380 info->fbops = &nouveau_fbcon_sw_ops;
381 info->fix.smem_start = nvbo->bo.mem.bus.offset;
382 info->fix.smem_len = nvbo->bo.mem.num_pages << PAGE_SHIFT;
383
384 info->screen_base = nvbo_kmap_obj_iovirtual(nvbo);
385 info->screen_size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
386
387 drm_fb_helper_fill_info(info, &fbcon->helper, sizes);
388
389 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
390
391 if (chan)
392 nouveau_fbcon_accel_init(dev);
393 nouveau_fbcon_zfill(dev, fbcon);
394
395 /* To allow resizeing without swapping buffers */
396 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
397 fb->width, fb->height, nvbo->offset, nvbo);
398
399 vga_switcheroo_client_fb_set(dev->pdev, info);
400 return 0;
401
402 out_unlock:
403 if (chan)
404 nouveau_vma_del(&fbcon->vma);
405 nouveau_bo_unmap(nvbo);
406 out_unpin:
407 nouveau_bo_unpin(nvbo);
408 out_unref:
409 nouveau_bo_ref(NULL, &nvbo);
410 out:
411 return ret;
412 }
413
414 static int
nouveau_fbcon_destroy(struct drm_device * dev,struct nouveau_fbdev * fbcon)415 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
416 {
417 struct drm_framebuffer *fb = fbcon->helper.fb;
418 struct nouveau_bo *nvbo;
419
420 drm_fb_helper_unregister_fbi(&fbcon->helper);
421 drm_fb_helper_fini(&fbcon->helper);
422
423 if (fb && fb->obj[0]) {
424 nvbo = nouveau_gem_object(fb->obj[0]);
425 nouveau_vma_del(&fbcon->vma);
426 nouveau_bo_unmap(nvbo);
427 nouveau_bo_unpin(nvbo);
428 drm_framebuffer_put(fb);
429 }
430
431 return 0;
432 }
433
nouveau_fbcon_gpu_lockup(struct fb_info * info)434 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
435 {
436 struct nouveau_fbdev *fbcon = info->par;
437 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
438
439 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
440 info->flags |= FBINFO_HWACCEL_DISABLED;
441 }
442
443 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
444 .fb_probe = nouveau_fbcon_create,
445 };
446
447 static void
nouveau_fbcon_set_suspend_work(struct work_struct * work)448 nouveau_fbcon_set_suspend_work(struct work_struct *work)
449 {
450 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
451 int state = READ_ONCE(drm->fbcon_new_state);
452
453 if (state == FBINFO_STATE_RUNNING)
454 pm_runtime_get_sync(drm->dev->dev);
455
456 console_lock();
457 if (state == FBINFO_STATE_RUNNING)
458 nouveau_fbcon_accel_restore(drm->dev);
459 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
460 if (state != FBINFO_STATE_RUNNING)
461 nouveau_fbcon_accel_save_disable(drm->dev);
462 console_unlock();
463
464 if (state == FBINFO_STATE_RUNNING) {
465 nouveau_fbcon_hotplug_resume(drm->fbcon);
466 pm_runtime_mark_last_busy(drm->dev->dev);
467 pm_runtime_put_autosuspend(drm->dev->dev);
468 }
469 }
470
471 void
nouveau_fbcon_set_suspend(struct drm_device * dev,int state)472 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
473 {
474 struct nouveau_drm *drm = nouveau_drm(dev);
475
476 if (!drm->fbcon)
477 return;
478
479 drm->fbcon_new_state = state;
480 /* Since runtime resume can happen as a result of a sysfs operation,
481 * it's possible we already have the console locked. So handle fbcon
482 * init/deinit from a seperate work thread
483 */
484 schedule_work(&drm->fbcon_work);
485 }
486
487 void
nouveau_fbcon_output_poll_changed(struct drm_device * dev)488 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
489 {
490 struct nouveau_drm *drm = nouveau_drm(dev);
491 struct nouveau_fbdev *fbcon = drm->fbcon;
492 int ret;
493
494 if (!fbcon)
495 return;
496
497 mutex_lock(&fbcon->hotplug_lock);
498
499 ret = pm_runtime_get(dev->dev);
500 if (ret == 1 || ret == -EACCES) {
501 drm_fb_helper_hotplug_event(&fbcon->helper);
502
503 pm_runtime_mark_last_busy(dev->dev);
504 pm_runtime_put_autosuspend(dev->dev);
505 } else if (ret == 0) {
506 /* If the GPU was already in the process of suspending before
507 * this event happened, then we can't block here as we'll
508 * deadlock the runtime pmops since they wait for us to
509 * finish. So, just defer this event for when we runtime
510 * resume again. It will be handled by fbcon_work.
511 */
512 NV_DEBUG(drm, "fbcon HPD event deferred until runtime resume\n");
513 fbcon->hotplug_waiting = true;
514 pm_runtime_put_noidle(drm->dev->dev);
515 } else {
516 DRM_WARN("fbcon HPD event lost due to RPM failure: %d\n",
517 ret);
518 }
519
520 mutex_unlock(&fbcon->hotplug_lock);
521 }
522
523 void
nouveau_fbcon_hotplug_resume(struct nouveau_fbdev * fbcon)524 nouveau_fbcon_hotplug_resume(struct nouveau_fbdev *fbcon)
525 {
526 struct nouveau_drm *drm;
527
528 if (!fbcon)
529 return;
530 drm = nouveau_drm(fbcon->helper.dev);
531
532 mutex_lock(&fbcon->hotplug_lock);
533 if (fbcon->hotplug_waiting) {
534 fbcon->hotplug_waiting = false;
535
536 NV_DEBUG(drm, "Handling deferred fbcon HPD events\n");
537 drm_fb_helper_hotplug_event(&fbcon->helper);
538 }
539 mutex_unlock(&fbcon->hotplug_lock);
540 }
541
542 int
nouveau_fbcon_init(struct drm_device * dev)543 nouveau_fbcon_init(struct drm_device *dev)
544 {
545 struct nouveau_drm *drm = nouveau_drm(dev);
546 struct nouveau_fbdev *fbcon;
547 int preferred_bpp = nouveau_fbcon_bpp;
548 int ret;
549
550 if (!dev->mode_config.num_crtc ||
551 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
552 return 0;
553
554 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
555 if (!fbcon)
556 return -ENOMEM;
557
558 drm->fbcon = fbcon;
559 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
560 mutex_init(&fbcon->hotplug_lock);
561
562 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
563
564 ret = drm_fb_helper_init(dev, &fbcon->helper);
565 if (ret)
566 goto free;
567
568 if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
569 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
570 preferred_bpp = 8;
571 else
572 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
573 preferred_bpp = 16;
574 else
575 preferred_bpp = 32;
576 }
577
578 /* disable all the possible outputs/crtcs before entering KMS mode */
579 if (!drm_drv_uses_atomic_modeset(dev))
580 drm_helper_disable_unused_functions(dev);
581
582 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
583 if (ret)
584 goto fini;
585
586 if (fbcon->helper.fbdev)
587 fbcon->helper.fbdev->pixmap.buf_align = 4;
588 return 0;
589
590 fini:
591 drm_fb_helper_fini(&fbcon->helper);
592 free:
593 kfree(fbcon);
594 drm->fbcon = NULL;
595 return ret;
596 }
597
598 void
nouveau_fbcon_fini(struct drm_device * dev)599 nouveau_fbcon_fini(struct drm_device *dev)
600 {
601 struct nouveau_drm *drm = nouveau_drm(dev);
602
603 if (!drm->fbcon)
604 return;
605
606 nouveau_fbcon_accel_fini(dev);
607 nouveau_fbcon_destroy(dev, drm->fbcon);
608 kfree(drm->fbcon);
609 drm->fbcon = NULL;
610 }
611