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8ac465208eae1df44a10aac219e27a3ee683806d
[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
59 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
60 if (!private)
61 return -ENOMEM;
62
63 dev_set_drvdata(dev->dev, dev);
64 dev->dev_private = (void *)private;
65
66 /*
67 * create mapping to manage iommu table and set a pointer to iommu
68 * mapping structure to iommu_mapping of private data.
69 * also this iommu_mapping can be used to check if iommu is supported
70 * or not.
71 */
72 ret = drm_create_iommu_mapping(dev);
73 if (ret < 0) {
74 DRM_ERROR("failed to create iommu mapping.\n");
75 goto err_free_private;
76 }
77
78 drm_mode_config_init(dev);
79
80 exynos_drm_mode_config_init(dev);
81
82 /* setup possible_clones. */
83 exynos_drm_encoder_setup(dev);
84
85 platform_set_drvdata(dev->platformdev, dev);
86
87 /* Try to bind all sub drivers. */
88 ret = component_bind_all(dev->dev, dev);
89 if (ret)
90 goto err_mode_config_cleanup;
91
92 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
93 if (ret)
94 goto err_unbind_all;
95
96 /* Probe non kms sub drivers and virtual display driver. */
97 ret = exynos_drm_device_subdrv_probe(dev);
98 if (ret)
99 goto err_cleanup_vblank;
100
101 /*
102 * enable drm irq mode.
103 * - with irq_enabled = true, we can use the vblank feature.
104 *
105 * P.S. note that we wouldn't use drm irq handler but
106 * just specific driver own one instead because
107 * drm framework supports only one irq handler.
108 */
109 dev->irq_enabled = true;
110
111 /*
112 * with vblank_disable_allowed = true, vblank interrupt will be disabled
113 * by drm timer once a current process gives up ownership of
114 * vblank event.(after drm_vblank_put function is called)
115 */
116 dev->vblank_disable_allowed = true;
117
118 /* init kms poll for handling hpd */
119 drm_kms_helper_poll_init(dev);
120
121 /* force connectors detection */
122 drm_helper_hpd_irq_event(dev);
123
124 return 0;
125
126 err_cleanup_vblank:
127 drm_vblank_cleanup(dev);
128 err_unbind_all:
129 component_unbind_all(dev->dev, dev);
130 err_mode_config_cleanup:
131 drm_mode_config_cleanup(dev);
132 drm_release_iommu_mapping(dev);
133 err_free_private:
134 kfree(private);
135
136 return ret;
137 }
138
139 static int exynos_drm_unload(struct drm_device *dev)
140 {
141 exynos_drm_device_subdrv_remove(dev);
142
143 exynos_drm_fbdev_fini(dev);
144 drm_kms_helper_poll_fini(dev);
145
146 drm_vblank_cleanup(dev);
147 component_unbind_all(dev->dev, dev);
148 drm_mode_config_cleanup(dev);
149 drm_release_iommu_mapping(dev);
150
151 kfree(dev->dev_private);
152 dev->dev_private = NULL;
153
154 return 0;
155 }
156
157 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
158 {
159 struct drm_connector *connector;
160
161 drm_modeset_lock_all(dev);
162 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
163 int old_dpms = connector->dpms;
164
165 if (connector->funcs->dpms)
166 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
167
168 /* Set the old mode back to the connector for resume */
169 connector->dpms = old_dpms;
170 }
171 drm_modeset_unlock_all(dev);
172
173 return 0;
174 }
175
176 static int exynos_drm_resume(struct drm_device *dev)
177 {
178 struct drm_connector *connector;
179
180 drm_modeset_lock_all(dev);
181 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
182 if (connector->funcs->dpms) {
183 int dpms = connector->dpms;
184
185 connector->dpms = DRM_MODE_DPMS_OFF;
186 connector->funcs->dpms(connector, dpms);
187 }
188 }
189 drm_modeset_unlock_all(dev);
190
191 return 0;
192 }
193
194 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
195 {
196 struct drm_exynos_file_private *file_priv;
197 int ret;
198
199 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
200 if (!file_priv)
201 return -ENOMEM;
202
203 file->driver_priv = file_priv;
204
205 ret = exynos_drm_subdrv_open(dev, file);
206 if (ret)
207 goto err_file_priv_free;
208
209 return ret;
210
211 err_file_priv_free:
212 kfree(file_priv);
213 file->driver_priv = NULL;
214 return ret;
215 }
216
217 static void exynos_drm_preclose(struct drm_device *dev,
218 struct drm_file *file)
219 {
220 exynos_drm_subdrv_close(dev, file);
221 }
222
223 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
224 {
225 struct drm_pending_event *e, *et;
226 unsigned long flags;
227
228 if (!file->driver_priv)
229 return;
230
231 spin_lock_irqsave(&dev->event_lock, flags);
232 /* Release all events handled by page flip handler but not freed. */
233 list_for_each_entry_safe(e, et, &file->event_list, link) {
234 list_del(&e->link);
235 e->destroy(e);
236 }
237 spin_unlock_irqrestore(&dev->event_lock, flags);
238
239 kfree(file->driver_priv);
240 file->driver_priv = NULL;
241 }
242
243 static void exynos_drm_lastclose(struct drm_device *dev)
244 {
245 exynos_drm_fbdev_restore_mode(dev);
246 }
247
248 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
249 .fault = exynos_drm_gem_fault,
250 .open = drm_gem_vm_open,
251 .close = drm_gem_vm_close,
252 };
253
254 static const struct drm_ioctl_desc exynos_ioctls[] = {
255 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
256 DRM_UNLOCKED | DRM_AUTH),
257 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
258 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
259 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
260 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
261 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
262 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
263 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
264 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
265 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
266 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
267 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
268 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
269 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
270 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
271 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
272 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
273 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
274 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
275 };
276
277 static const struct file_operations exynos_drm_driver_fops = {
278 .owner = THIS_MODULE,
279 .open = drm_open,
280 .mmap = exynos_drm_gem_mmap,
281 .poll = drm_poll,
282 .read = drm_read,
283 .unlocked_ioctl = drm_ioctl,
284 #ifdef CONFIG_COMPAT
285 .compat_ioctl = drm_compat_ioctl,
286 #endif
287 .release = drm_release,
288 };
289
290 static struct drm_driver exynos_drm_driver = {
291 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
292 .load = exynos_drm_load,
293 .unload = exynos_drm_unload,
294 .suspend = exynos_drm_suspend,
295 .resume = exynos_drm_resume,
296 .open = exynos_drm_open,
297 .preclose = exynos_drm_preclose,
298 .lastclose = exynos_drm_lastclose,
299 .postclose = exynos_drm_postclose,
300 .set_busid = drm_platform_set_busid,
301 .get_vblank_counter = drm_vblank_count,
302 .enable_vblank = exynos_drm_crtc_enable_vblank,
303 .disable_vblank = exynos_drm_crtc_disable_vblank,
304 .gem_free_object = exynos_drm_gem_free_object,
305 .gem_vm_ops = &exynos_drm_gem_vm_ops,
306 .dumb_create = exynos_drm_gem_dumb_create,
307 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
308 .dumb_destroy = drm_gem_dumb_destroy,
309 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
310 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
311 .gem_prime_export = exynos_dmabuf_prime_export,
312 .gem_prime_import = exynos_dmabuf_prime_import,
313 .ioctls = exynos_ioctls,
314 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
315 .fops = &exynos_drm_driver_fops,
316 .name = DRIVER_NAME,
317 .desc = DRIVER_DESC,
318 .date = DRIVER_DATE,
319 .major = DRIVER_MAJOR,
320 .minor = DRIVER_MINOR,
321 };
322
323 #ifdef CONFIG_PM_SLEEP
324 static int exynos_drm_sys_suspend(struct device *dev)
325 {
326 struct drm_device *drm_dev = dev_get_drvdata(dev);
327 pm_message_t message;
328
329 if (pm_runtime_suspended(dev) || !drm_dev)
330 return 0;
331
332 message.event = PM_EVENT_SUSPEND;
333 return exynos_drm_suspend(drm_dev, message);
334 }
335
336 static int exynos_drm_sys_resume(struct device *dev)
337 {
338 struct drm_device *drm_dev = dev_get_drvdata(dev);
339
340 if (pm_runtime_suspended(dev) || !drm_dev)
341 return 0;
342
343 return exynos_drm_resume(drm_dev);
344 }
345 #endif
346
347 static const struct dev_pm_ops exynos_drm_pm_ops = {
348 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
349 };
350
351 int exynos_drm_component_add(struct device *dev,
352 enum exynos_drm_device_type dev_type,
353 enum exynos_drm_output_type out_type)
354 {
355 struct component_dev *cdev;
356
357 if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
358 dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
359 DRM_ERROR("invalid device type.\n");
360 return -EINVAL;
361 }
362
363 mutex_lock(&drm_component_lock);
364
365 /*
366 * Make sure to check if there is a component which has two device
367 * objects, for connector and for encoder/connector.
368 * It should make sure that crtc and encoder/connector drivers are
369 * ready before exynos drm core binds them.
370 */
371 list_for_each_entry(cdev, &drm_component_list, list) {
372 if (cdev->out_type == out_type) {
373 /*
374 * If crtc and encoder/connector device objects are
375 * added already just return.
376 */
377 if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
378 EXYNOS_DEVICE_TYPE_CONNECTOR)) {
379 mutex_unlock(&drm_component_lock);
380 return 0;
381 }
382
383 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
384 cdev->crtc_dev = dev;
385 cdev->dev_type_flag |= dev_type;
386 }
387
388 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
389 cdev->conn_dev = dev;
390 cdev->dev_type_flag |= dev_type;
391 }
392
393 mutex_unlock(&drm_component_lock);
394 return 0;
395 }
396 }
397
398 mutex_unlock(&drm_component_lock);
399
400 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
401 if (!cdev)
402 return -ENOMEM;
403
404 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
405 cdev->crtc_dev = dev;
406 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
407 cdev->conn_dev = dev;
408
409 cdev->out_type = out_type;
410 cdev->dev_type_flag = dev_type;
411
412 mutex_lock(&drm_component_lock);
413 list_add_tail(&cdev->list, &drm_component_list);
414 mutex_unlock(&drm_component_lock);
415
416 return 0;
417 }
418
419 void exynos_drm_component_del(struct device *dev,
420 enum exynos_drm_device_type dev_type)
421 {
422 struct component_dev *cdev, *next;
423
424 mutex_lock(&drm_component_lock);
425
426 list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
427 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
428 if (cdev->crtc_dev == dev) {
429 cdev->crtc_dev = NULL;
430 cdev->dev_type_flag &= ~dev_type;
431 }
432 }
433
434 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
435 if (cdev->conn_dev == dev) {
436 cdev->conn_dev = NULL;
437 cdev->dev_type_flag &= ~dev_type;
438 }
439 }
440
441 /*
442 * Release cdev object only in case that both of crtc and
443 * encoder/connector device objects are NULL.
444 */
445 if (!cdev->crtc_dev && !cdev->conn_dev) {
446 list_del(&cdev->list);
447 kfree(cdev);
448 }
449 }
450
451 mutex_unlock(&drm_component_lock);
452 }
453
454 static int compare_dev(struct device *dev, void *data)
455 {
456 return dev == (struct device *)data;
457 }
458
459 static struct component_match *exynos_drm_match_add(struct device *dev)
460 {
461 struct component_match *match = NULL;
462 struct component_dev *cdev;
463 unsigned int attach_cnt = 0;
464
465 mutex_lock(&drm_component_lock);
466
467 /* Do not retry to probe if there is no any kms driver regitered. */
468 if (list_empty(&drm_component_list)) {
469 mutex_unlock(&drm_component_lock);
470 return ERR_PTR(-ENODEV);
471 }
472
473 list_for_each_entry(cdev, &drm_component_list, list) {
474 /*
475 * Add components to master only in case that crtc and
476 * encoder/connector device objects exist.
477 */
478 if (!cdev->crtc_dev || !cdev->conn_dev)
479 continue;
480
481 attach_cnt++;
482
483 mutex_unlock(&drm_component_lock);
484
485 /*
486 * fimd and dpi modules have same device object so add
487 * only crtc device object in this case.
488 */
489 if (cdev->crtc_dev == cdev->conn_dev) {
490 component_match_add(dev, &match, compare_dev,
491 cdev->crtc_dev);
492 goto out_lock;
493 }
494
495 /*
496 * Do not chage below call order.
497 * crtc device first should be added to master because
498 * connector/encoder need pipe number of crtc when they
499 * are created.
500 */
501 component_match_add(dev, &match, compare_dev, cdev->crtc_dev);
502 component_match_add(dev, &match, compare_dev, cdev->conn_dev);
503
504 out_lock:
505 mutex_lock(&drm_component_lock);
506 }
507
508 mutex_unlock(&drm_component_lock);
509
510 return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER);
511 }
512
513 static int exynos_drm_bind(struct device *dev)
514 {
515 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
516 }
517
518 static void exynos_drm_unbind(struct device *dev)
519 {
520 drm_put_dev(dev_get_drvdata(dev));
521 }
522
523 static const struct component_master_ops exynos_drm_ops = {
524 .bind = exynos_drm_bind,
525 .unbind = exynos_drm_unbind,
526 };
527
528 static struct platform_driver *const exynos_drm_kms_drivers[] = {
529 #ifdef CONFIG_DRM_EXYNOS_FIMD
530 &fimd_driver,
531 #endif
532 #ifdef CONFIG_DRM_EXYNOS7_DECON
533 &decon_driver,
534 #endif
535 #ifdef CONFIG_DRM_EXYNOS_DP
536 &dp_driver,
537 #endif
538 #ifdef CONFIG_DRM_EXYNOS_DSI
539 &dsi_driver,
540 #endif
541 #ifdef CONFIG_DRM_EXYNOS_HDMI
542 &mixer_driver,
543 &hdmi_driver,
544 #endif
545 };
546
547 static struct platform_driver *const exynos_drm_non_kms_drivers[] = {
548 #ifdef CONFIG_DRM_EXYNOS_G2D
549 &g2d_driver,
550 #endif
551 #ifdef CONFIG_DRM_EXYNOS_FIMC
552 &fimc_driver,
553 #endif
554 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
555 &rotator_driver,
556 #endif
557 #ifdef CONFIG_DRM_EXYNOS_GSC
558 &gsc_driver,
559 #endif
560 #ifdef CONFIG_DRM_EXYNOS_IPP
561 &ipp_driver,
562 #endif
563 };
564
565 static int exynos_drm_platform_probe(struct platform_device *pdev)
566 {
567 struct component_match *match;
568
569 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
570 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
571
572 match = exynos_drm_match_add(&pdev->dev);
573 if (IS_ERR(match)) {
574 return PTR_ERR(match);
575 }
576
577 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
578 match);
579 }
580
581 static int exynos_drm_platform_remove(struct platform_device *pdev)
582 {
583 component_master_del(&pdev->dev, &exynos_drm_ops);
584 return 0;
585 }
586
587 static const char * const strings[] = {
588 "samsung,exynos3",
589 "samsung,exynos4",
590 "samsung,exynos5",
591 "samsung,exynos7",
592 };
593
594 static struct platform_driver exynos_drm_platform_driver = {
595 .probe = exynos_drm_platform_probe,
596 .remove = exynos_drm_platform_remove,
597 .driver = {
598 .name = "exynos-drm",
599 .pm = &exynos_drm_pm_ops,
600 },
601 };
602
603 static int exynos_drm_init(void)
604 {
605 bool is_exynos = false;
606 int ret, i, j;
607
608 /*
609 * Register device object only in case of Exynos SoC.
610 *
611 * Below codes resolves temporarily infinite loop issue incurred
612 * by Exynos drm driver when using multi-platform kernel.
613 * So these codes will be replaced with more generic way later.
614 */
615 for (i = 0; i < ARRAY_SIZE(strings); i++) {
616 if (of_machine_is_compatible(strings[i])) {
617 is_exynos = true;
618 break;
619 }
620 }
621
622 if (!is_exynos)
623 return -ENODEV;
624
625 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
626 NULL, 0);
627 if (IS_ERR(exynos_drm_pdev))
628 return PTR_ERR(exynos_drm_pdev);
629
630 ret = exynos_drm_probe_vidi();
631 if (ret < 0)
632 goto err_unregister_pd;
633
634 for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) {
635 ret = platform_driver_register(exynos_drm_kms_drivers[i]);
636 if (ret < 0)
637 goto err_unregister_kms_drivers;
638 }
639
640 for (j = 0; j < ARRAY_SIZE(exynos_drm_non_kms_drivers); ++j) {
641 ret = platform_driver_register(exynos_drm_non_kms_drivers[j]);
642 if (ret < 0)
643 goto err_unregister_non_kms_drivers;
644 }
645
646 #ifdef CONFIG_DRM_EXYNOS_IPP
647 ret = exynos_platform_device_ipp_register();
648 if (ret < 0)
649 goto err_unregister_non_kms_drivers;
650 #endif
651
652 ret = platform_driver_register(&exynos_drm_platform_driver);
653 if (ret)
654 goto err_unregister_resources;
655
656 return 0;
657
658 err_unregister_resources:
659 #ifdef CONFIG_DRM_EXYNOS_IPP
660 exynos_platform_device_ipp_unregister();
661 #endif
662
663 err_unregister_non_kms_drivers:
664 while (--j >= 0)
665 platform_driver_unregister(exynos_drm_non_kms_drivers[j]);
666
667 err_unregister_kms_drivers:
668 while (--i >= 0)
669 platform_driver_unregister(exynos_drm_kms_drivers[i]);
670
671 exynos_drm_remove_vidi();
672
673 err_unregister_pd:
674 platform_device_unregister(exynos_drm_pdev);
675
676 return ret;
677 }
678
679 static void exynos_drm_exit(void)
680 {
681 int i;
682
683 #ifdef CONFIG_DRM_EXYNOS_IPP
684 exynos_platform_device_ipp_unregister();
685 #endif
686
687 for (i = ARRAY_SIZE(exynos_drm_non_kms_drivers) - 1; i >= 0; --i)
688 platform_driver_unregister(exynos_drm_non_kms_drivers[i]);
689
690 for (i = ARRAY_SIZE(exynos_drm_kms_drivers) - 1; i >= 0; --i)
691 platform_driver_unregister(exynos_drm_kms_drivers[i]);
692
693 platform_driver_unregister(&exynos_drm_platform_driver);
694
695 exynos_drm_remove_vidi();
696
697 platform_device_unregister(exynos_drm_pdev);
698 }
699
700 module_init(exynos_drm_init);
701 module_exit(exynos_drm_exit);
702
703 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
704 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
705 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
706 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
707 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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