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Merge branch 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
[deliverable/linux.git] / drivers / gpu / drm / exynos / exynos_drm_drv.c
1 /*
2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
3 * Authors:
4 * Inki Dae <inki.dae@samsung.com>
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Seung-Woo Kim <sw0312.kim@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14 #include <linux/pm_runtime.h>
15 #include <drm/drmP.h>
16 #include <drm/drm_crtc_helper.h>
17
18 #include <linux/component.h>
19
20 #include <drm/exynos_drm.h>
21
22 #include "exynos_drm_drv.h"
23 #include "exynos_drm_crtc.h"
24 #include "exynos_drm_encoder.h"
25 #include "exynos_drm_fbdev.h"
26 #include "exynos_drm_fb.h"
27 #include "exynos_drm_gem.h"
28 #include "exynos_drm_plane.h"
29 #include "exynos_drm_vidi.h"
30 #include "exynos_drm_dmabuf.h"
31 #include "exynos_drm_g2d.h"
32 #include "exynos_drm_ipp.h"
33 #include "exynos_drm_iommu.h"
34
35 #define DRIVER_NAME "exynos"
36 #define DRIVER_DESC "Samsung SoC DRM"
37 #define DRIVER_DATE "20110530"
38 #define DRIVER_MAJOR 1
39 #define DRIVER_MINOR 0
40
41 static struct platform_device *exynos_drm_pdev;
42
43 static DEFINE_MUTEX(drm_component_lock);
44 static LIST_HEAD(drm_component_list);
45
46 struct component_dev {
47 struct list_head list;
48 struct device *crtc_dev;
49 struct device *conn_dev;
50 enum exynos_drm_output_type out_type;
51 unsigned int dev_type_flag;
52 };
53
54 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
55 {
56 struct exynos_drm_private *private;
57 int ret;
58 int nr;
59
60 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
61 if (!private)
62 return -ENOMEM;
63
64 INIT_LIST_HEAD(&private->pageflip_event_list);
65 dev_set_drvdata(dev->dev, dev);
66 dev->dev_private = (void *)private;
67
68 /*
69 * create mapping to manage iommu table and set a pointer to iommu
70 * mapping structure to iommu_mapping of private data.
71 * also this iommu_mapping can be used to check if iommu is supported
72 * or not.
73 */
74 ret = drm_create_iommu_mapping(dev);
75 if (ret < 0) {
76 DRM_ERROR("failed to create iommu mapping.\n");
77 goto err_free_private;
78 }
79
80 drm_mode_config_init(dev);
81
82 exynos_drm_mode_config_init(dev);
83
84 for (nr = 0; nr < MAX_PLANE; nr++) {
85 struct drm_plane *plane;
86 unsigned long possible_crtcs = (1 << MAX_CRTC) - 1;
87
88 plane = exynos_plane_init(dev, possible_crtcs,
89 DRM_PLANE_TYPE_OVERLAY);
90 if (!IS_ERR(plane))
91 continue;
92
93 ret = PTR_ERR(plane);
94 goto err_mode_config_cleanup;
95 }
96
97 /* setup possible_clones. */
98 exynos_drm_encoder_setup(dev);
99
100 platform_set_drvdata(dev->platformdev, dev);
101
102 /* Try to bind all sub drivers. */
103 ret = component_bind_all(dev->dev, dev);
104 if (ret)
105 goto err_mode_config_cleanup;
106
107 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
108 if (ret)
109 goto err_unbind_all;
110
111 /* Probe non kms sub drivers and virtual display driver. */
112 ret = exynos_drm_device_subdrv_probe(dev);
113 if (ret)
114 goto err_cleanup_vblank;
115
116 /*
117 * enable drm irq mode.
118 * - with irq_enabled = true, we can use the vblank feature.
119 *
120 * P.S. note that we wouldn't use drm irq handler but
121 * just specific driver own one instead because
122 * drm framework supports only one irq handler.
123 */
124 dev->irq_enabled = true;
125
126 /*
127 * with vblank_disable_allowed = true, vblank interrupt will be disabled
128 * by drm timer once a current process gives up ownership of
129 * vblank event.(after drm_vblank_put function is called)
130 */
131 dev->vblank_disable_allowed = true;
132
133 /* init kms poll for handling hpd */
134 drm_kms_helper_poll_init(dev);
135
136 /* force connectors detection */
137 drm_helper_hpd_irq_event(dev);
138
139 return 0;
140
141 err_cleanup_vblank:
142 drm_vblank_cleanup(dev);
143 err_unbind_all:
144 component_unbind_all(dev->dev, dev);
145 err_mode_config_cleanup:
146 drm_mode_config_cleanup(dev);
147 drm_release_iommu_mapping(dev);
148 err_free_private:
149 kfree(private);
150
151 return ret;
152 }
153
154 static int exynos_drm_unload(struct drm_device *dev)
155 {
156 exynos_drm_device_subdrv_remove(dev);
157
158 exynos_drm_fbdev_fini(dev);
159 drm_kms_helper_poll_fini(dev);
160
161 drm_vblank_cleanup(dev);
162 component_unbind_all(dev->dev, dev);
163 drm_mode_config_cleanup(dev);
164 drm_release_iommu_mapping(dev);
165
166 kfree(dev->dev_private);
167 dev->dev_private = NULL;
168
169 return 0;
170 }
171
172 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
173 {
174 struct drm_connector *connector;
175
176 drm_modeset_lock_all(dev);
177 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
178 int old_dpms = connector->dpms;
179
180 if (connector->funcs->dpms)
181 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
182
183 /* Set the old mode back to the connector for resume */
184 connector->dpms = old_dpms;
185 }
186 drm_modeset_unlock_all(dev);
187
188 return 0;
189 }
190
191 static int exynos_drm_resume(struct drm_device *dev)
192 {
193 struct drm_connector *connector;
194
195 drm_modeset_lock_all(dev);
196 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
197 if (connector->funcs->dpms) {
198 int dpms = connector->dpms;
199
200 connector->dpms = DRM_MODE_DPMS_OFF;
201 connector->funcs->dpms(connector, dpms);
202 }
203 }
204 drm_modeset_unlock_all(dev);
205
206 return 0;
207 }
208
209 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
210 {
211 struct drm_exynos_file_private *file_priv;
212 int ret;
213
214 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
215 if (!file_priv)
216 return -ENOMEM;
217
218 file->driver_priv = file_priv;
219
220 ret = exynos_drm_subdrv_open(dev, file);
221 if (ret)
222 goto err_file_priv_free;
223
224 return ret;
225
226 err_file_priv_free:
227 kfree(file_priv);
228 file->driver_priv = NULL;
229 return ret;
230 }
231
232 static void exynos_drm_preclose(struct drm_device *dev,
233 struct drm_file *file)
234 {
235 exynos_drm_subdrv_close(dev, file);
236 }
237
238 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
239 {
240 struct exynos_drm_private *private = dev->dev_private;
241 struct drm_pending_vblank_event *v, *vt;
242 struct drm_pending_event *e, *et;
243 unsigned long flags;
244
245 if (!file->driver_priv)
246 return;
247
248 /* Release all events not unhandled by page flip handler. */
249 spin_lock_irqsave(&dev->event_lock, flags);
250 list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
251 base.link) {
252 if (v->base.file_priv == file) {
253 list_del(&v->base.link);
254 drm_vblank_put(dev, v->pipe);
255 v->base.destroy(&v->base);
256 }
257 }
258
259 /* Release all events handled by page flip handler but not freed. */
260 list_for_each_entry_safe(e, et, &file->event_list, link) {
261 list_del(&e->link);
262 e->destroy(e);
263 }
264 spin_unlock_irqrestore(&dev->event_lock, flags);
265
266 kfree(file->driver_priv);
267 file->driver_priv = NULL;
268 }
269
270 static void exynos_drm_lastclose(struct drm_device *dev)
271 {
272 exynos_drm_fbdev_restore_mode(dev);
273 }
274
275 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
276 .fault = exynos_drm_gem_fault,
277 .open = drm_gem_vm_open,
278 .close = drm_gem_vm_close,
279 };
280
281 static const struct drm_ioctl_desc exynos_ioctls[] = {
282 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
283 DRM_UNLOCKED | DRM_AUTH),
284 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
285 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
286 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
287 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
288 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
289 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
290 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
291 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
292 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
293 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
294 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
295 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
296 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
297 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
298 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
299 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
300 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
301 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
302 };
303
304 static const struct file_operations exynos_drm_driver_fops = {
305 .owner = THIS_MODULE,
306 .open = drm_open,
307 .mmap = exynos_drm_gem_mmap,
308 .poll = drm_poll,
309 .read = drm_read,
310 .unlocked_ioctl = drm_ioctl,
311 #ifdef CONFIG_COMPAT
312 .compat_ioctl = drm_compat_ioctl,
313 #endif
314 .release = drm_release,
315 };
316
317 static struct drm_driver exynos_drm_driver = {
318 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
319 .load = exynos_drm_load,
320 .unload = exynos_drm_unload,
321 .suspend = exynos_drm_suspend,
322 .resume = exynos_drm_resume,
323 .open = exynos_drm_open,
324 .preclose = exynos_drm_preclose,
325 .lastclose = exynos_drm_lastclose,
326 .postclose = exynos_drm_postclose,
327 .set_busid = drm_platform_set_busid,
328 .get_vblank_counter = drm_vblank_count,
329 .enable_vblank = exynos_drm_crtc_enable_vblank,
330 .disable_vblank = exynos_drm_crtc_disable_vblank,
331 .gem_free_object = exynos_drm_gem_free_object,
332 .gem_vm_ops = &exynos_drm_gem_vm_ops,
333 .dumb_create = exynos_drm_gem_dumb_create,
334 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
335 .dumb_destroy = drm_gem_dumb_destroy,
336 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
337 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
338 .gem_prime_export = exynos_dmabuf_prime_export,
339 .gem_prime_import = exynos_dmabuf_prime_import,
340 .ioctls = exynos_ioctls,
341 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
342 .fops = &exynos_drm_driver_fops,
343 .name = DRIVER_NAME,
344 .desc = DRIVER_DESC,
345 .date = DRIVER_DATE,
346 .major = DRIVER_MAJOR,
347 .minor = DRIVER_MINOR,
348 };
349
350 #ifdef CONFIG_PM_SLEEP
351 static int exynos_drm_sys_suspend(struct device *dev)
352 {
353 struct drm_device *drm_dev = dev_get_drvdata(dev);
354 pm_message_t message;
355
356 if (pm_runtime_suspended(dev) || !drm_dev)
357 return 0;
358
359 message.event = PM_EVENT_SUSPEND;
360 return exynos_drm_suspend(drm_dev, message);
361 }
362
363 static int exynos_drm_sys_resume(struct device *dev)
364 {
365 struct drm_device *drm_dev = dev_get_drvdata(dev);
366
367 if (pm_runtime_suspended(dev) || !drm_dev)
368 return 0;
369
370 return exynos_drm_resume(drm_dev);
371 }
372 #endif
373
374 static const struct dev_pm_ops exynos_drm_pm_ops = {
375 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
376 };
377
378 int exynos_drm_component_add(struct device *dev,
379 enum exynos_drm_device_type dev_type,
380 enum exynos_drm_output_type out_type)
381 {
382 struct component_dev *cdev;
383
384 if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
385 dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
386 DRM_ERROR("invalid device type.\n");
387 return -EINVAL;
388 }
389
390 mutex_lock(&drm_component_lock);
391
392 /*
393 * Make sure to check if there is a component which has two device
394 * objects, for connector and for encoder/connector.
395 * It should make sure that crtc and encoder/connector drivers are
396 * ready before exynos drm core binds them.
397 */
398 list_for_each_entry(cdev, &drm_component_list, list) {
399 if (cdev->out_type == out_type) {
400 /*
401 * If crtc and encoder/connector device objects are
402 * added already just return.
403 */
404 if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
405 EXYNOS_DEVICE_TYPE_CONNECTOR)) {
406 mutex_unlock(&drm_component_lock);
407 return 0;
408 }
409
410 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
411 cdev->crtc_dev = dev;
412 cdev->dev_type_flag |= dev_type;
413 }
414
415 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
416 cdev->conn_dev = dev;
417 cdev->dev_type_flag |= dev_type;
418 }
419
420 mutex_unlock(&drm_component_lock);
421 return 0;
422 }
423 }
424
425 mutex_unlock(&drm_component_lock);
426
427 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
428 if (!cdev)
429 return -ENOMEM;
430
431 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
432 cdev->crtc_dev = dev;
433 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
434 cdev->conn_dev = dev;
435
436 cdev->out_type = out_type;
437 cdev->dev_type_flag = dev_type;
438
439 mutex_lock(&drm_component_lock);
440 list_add_tail(&cdev->list, &drm_component_list);
441 mutex_unlock(&drm_component_lock);
442
443 return 0;
444 }
445
446 void exynos_drm_component_del(struct device *dev,
447 enum exynos_drm_device_type dev_type)
448 {
449 struct component_dev *cdev, *next;
450
451 mutex_lock(&drm_component_lock);
452
453 list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
454 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
455 if (cdev->crtc_dev == dev) {
456 cdev->crtc_dev = NULL;
457 cdev->dev_type_flag &= ~dev_type;
458 }
459 }
460
461 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
462 if (cdev->conn_dev == dev) {
463 cdev->conn_dev = NULL;
464 cdev->dev_type_flag &= ~dev_type;
465 }
466 }
467
468 /*
469 * Release cdev object only in case that both of crtc and
470 * encoder/connector device objects are NULL.
471 */
472 if (!cdev->crtc_dev && !cdev->conn_dev) {
473 list_del(&cdev->list);
474 kfree(cdev);
475 }
476 }
477
478 mutex_unlock(&drm_component_lock);
479 }
480
481 static int compare_dev(struct device *dev, void *data)
482 {
483 return dev == (struct device *)data;
484 }
485
486 static struct component_match *exynos_drm_match_add(struct device *dev)
487 {
488 struct component_match *match = NULL;
489 struct component_dev *cdev;
490 unsigned int attach_cnt = 0;
491
492 mutex_lock(&drm_component_lock);
493
494 /* Do not retry to probe if there is no any kms driver regitered. */
495 if (list_empty(&drm_component_list)) {
496 mutex_unlock(&drm_component_lock);
497 return ERR_PTR(-ENODEV);
498 }
499
500 list_for_each_entry(cdev, &drm_component_list, list) {
501 /*
502 * Add components to master only in case that crtc and
503 * encoder/connector device objects exist.
504 */
505 if (!cdev->crtc_dev || !cdev->conn_dev)
506 continue;
507
508 attach_cnt++;
509
510 mutex_unlock(&drm_component_lock);
511
512 /*
513 * fimd and dpi modules have same device object so add
514 * only crtc device object in this case.
515 */
516 if (cdev->crtc_dev == cdev->conn_dev) {
517 component_match_add(dev, &match, compare_dev,
518 cdev->crtc_dev);
519 goto out_lock;
520 }
521
522 /*
523 * Do not chage below call order.
524 * crtc device first should be added to master because
525 * connector/encoder need pipe number of crtc when they
526 * are created.
527 */
528 component_match_add(dev, &match, compare_dev, cdev->crtc_dev);
529 component_match_add(dev, &match, compare_dev, cdev->conn_dev);
530
531 out_lock:
532 mutex_lock(&drm_component_lock);
533 }
534
535 mutex_unlock(&drm_component_lock);
536
537 return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER);
538 }
539
540 static int exynos_drm_bind(struct device *dev)
541 {
542 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
543 }
544
545 static void exynos_drm_unbind(struct device *dev)
546 {
547 drm_put_dev(dev_get_drvdata(dev));
548 }
549
550 static const struct component_master_ops exynos_drm_ops = {
551 .bind = exynos_drm_bind,
552 .unbind = exynos_drm_unbind,
553 };
554
555 static struct platform_driver *const exynos_drm_kms_drivers[] = {
556 #ifdef CONFIG_DRM_EXYNOS_FIMD
557 &fimd_driver,
558 #endif
559 #ifdef CONFIG_DRM_EXYNOS_DP
560 &dp_driver,
561 #endif
562 #ifdef CONFIG_DRM_EXYNOS_DSI
563 &dsi_driver,
564 #endif
565 #ifdef CONFIG_DRM_EXYNOS_HDMI
566 &mixer_driver,
567 &hdmi_driver,
568 #endif
569 };
570
571 static struct platform_driver *const exynos_drm_non_kms_drivers[] = {
572 #ifdef CONFIG_DRM_EXYNOS_G2D
573 &g2d_driver,
574 #endif
575 #ifdef CONFIG_DRM_EXYNOS_FIMC
576 &fimc_driver,
577 #endif
578 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
579 &rotator_driver,
580 #endif
581 #ifdef CONFIG_DRM_EXYNOS_GSC
582 &gsc_driver,
583 #endif
584 #ifdef CONFIG_DRM_EXYNOS_IPP
585 &ipp_driver,
586 #endif
587 };
588
589 static int exynos_drm_platform_probe(struct platform_device *pdev)
590 {
591 struct component_match *match;
592
593 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
594 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
595
596 match = exynos_drm_match_add(&pdev->dev);
597 if (IS_ERR(match)) {
598 return PTR_ERR(match);
599 }
600
601 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
602 match);
603 }
604
605 static int exynos_drm_platform_remove(struct platform_device *pdev)
606 {
607 component_master_del(&pdev->dev, &exynos_drm_ops);
608 return 0;
609 }
610
611 static const char * const strings[] = {
612 "samsung,exynos3",
613 "samsung,exynos4",
614 "samsung,exynos5",
615 };
616
617 static struct platform_driver exynos_drm_platform_driver = {
618 .probe = exynos_drm_platform_probe,
619 .remove = exynos_drm_platform_remove,
620 .driver = {
621 .name = "exynos-drm",
622 .pm = &exynos_drm_pm_ops,
623 },
624 };
625
626 static int exynos_drm_init(void)
627 {
628 bool is_exynos = false;
629 int ret, i, j;
630
631 /*
632 * Register device object only in case of Exynos SoC.
633 *
634 * Below codes resolves temporarily infinite loop issue incurred
635 * by Exynos drm driver when using multi-platform kernel.
636 * So these codes will be replaced with more generic way later.
637 */
638 for (i = 0; i < ARRAY_SIZE(strings); i++) {
639 if (of_machine_is_compatible(strings[i])) {
640 is_exynos = true;
641 break;
642 }
643 }
644
645 if (!is_exynos)
646 return -ENODEV;
647
648 /*
649 * Register device object only in case of Exynos SoC.
650 *
651 * Below codes resolves temporarily infinite loop issue incurred
652 * by Exynos drm driver when using multi-platform kernel.
653 * So these codes will be replaced with more generic way later.
654 */
655 if (!of_machine_is_compatible("samsung,exynos3") &&
656 !of_machine_is_compatible("samsung,exynos4") &&
657 !of_machine_is_compatible("samsung,exynos5"))
658 return -ENODEV;
659
660 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
661 NULL, 0);
662 if (IS_ERR(exynos_drm_pdev))
663 return PTR_ERR(exynos_drm_pdev);
664
665 ret = exynos_drm_probe_vidi();
666 if (ret < 0)
667 goto err_unregister_pd;
668
669 for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) {
670 ret = platform_driver_register(exynos_drm_kms_drivers[i]);
671 if (ret < 0)
672 goto err_unregister_kms_drivers;
673 }
674
675 for (j = 0; j < ARRAY_SIZE(exynos_drm_non_kms_drivers); ++j) {
676 ret = platform_driver_register(exynos_drm_non_kms_drivers[j]);
677 if (ret < 0)
678 goto err_unregister_non_kms_drivers;
679 }
680
681 #ifdef CONFIG_DRM_EXYNOS_IPP
682 ret = exynos_platform_device_ipp_register();
683 if (ret < 0)
684 goto err_unregister_non_kms_drivers;
685 #endif
686
687 ret = platform_driver_register(&exynos_drm_platform_driver);
688 if (ret)
689 goto err_unregister_resources;
690
691 return 0;
692
693 err_unregister_resources:
694 #ifdef CONFIG_DRM_EXYNOS_IPP
695 exynos_platform_device_ipp_unregister();
696 #endif
697
698 err_unregister_non_kms_drivers:
699 while (--j >= 0)
700 platform_driver_unregister(exynos_drm_non_kms_drivers[j]);
701
702 err_unregister_kms_drivers:
703 while (--i >= 0)
704 platform_driver_unregister(exynos_drm_kms_drivers[i]);
705
706 exynos_drm_remove_vidi();
707
708 err_unregister_pd:
709 platform_device_unregister(exynos_drm_pdev);
710
711 return ret;
712 }
713
714 static void exynos_drm_exit(void)
715 {
716 int i;
717
718 #ifdef CONFIG_DRM_EXYNOS_IPP
719 exynos_platform_device_ipp_unregister();
720 #endif
721
722 for (i = ARRAY_SIZE(exynos_drm_non_kms_drivers) - 1; i >= 0; --i)
723 platform_driver_unregister(exynos_drm_non_kms_drivers[i]);
724
725 for (i = ARRAY_SIZE(exynos_drm_kms_drivers) - 1; i >= 0; --i)
726 platform_driver_unregister(exynos_drm_kms_drivers[i]);
727
728 platform_driver_unregister(&exynos_drm_platform_driver);
729
730 exynos_drm_remove_vidi();
731
732 platform_device_unregister(exynos_drm_pdev);
733 }
734
735 module_init(exynos_drm_init);
736 module_exit(exynos_drm_exit);
737
738 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
739 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
740 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
741 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
742 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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