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
exynos_drm_load(struct drm_device * dev,unsigned long flags)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
exynos_drm_unload(struct drm_device * dev)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
exynos_drm_suspend(struct drm_device * dev,pm_message_t state)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
exynos_drm_resume(struct drm_device * dev)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 drm_helper_resume_force_mode(dev);
207
208 return 0;
209 }
210
exynos_drm_open(struct drm_device * dev,struct drm_file * file)211 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
212 {
213 struct drm_exynos_file_private *file_priv;
214 int ret;
215
216 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
217 if (!file_priv)
218 return -ENOMEM;
219
220 file->driver_priv = file_priv;
221
222 ret = exynos_drm_subdrv_open(dev, file);
223 if (ret)
224 goto err_file_priv_free;
225
226 return ret;
227
228 err_file_priv_free:
229 kfree(file_priv);
230 file->driver_priv = NULL;
231 return ret;
232 }
233
exynos_drm_preclose(struct drm_device * dev,struct drm_file * file)234 static void exynos_drm_preclose(struct drm_device *dev,
235 struct drm_file *file)
236 {
237 exynos_drm_subdrv_close(dev, file);
238 }
239
exynos_drm_postclose(struct drm_device * dev,struct drm_file * file)240 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
241 {
242 struct exynos_drm_private *private = dev->dev_private;
243 struct drm_pending_vblank_event *v, *vt;
244 struct drm_pending_event *e, *et;
245 unsigned long flags;
246
247 if (!file->driver_priv)
248 return;
249
250 /* Release all events not unhandled by page flip handler. */
251 spin_lock_irqsave(&dev->event_lock, flags);
252 list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
253 base.link) {
254 if (v->base.file_priv == file) {
255 list_del(&v->base.link);
256 drm_vblank_put(dev, v->pipe);
257 v->base.destroy(&v->base);
258 }
259 }
260
261 /* Release all events handled by page flip handler but not freed. */
262 list_for_each_entry_safe(e, et, &file->event_list, link) {
263 list_del(&e->link);
264 e->destroy(e);
265 }
266 spin_unlock_irqrestore(&dev->event_lock, flags);
267
268 kfree(file->driver_priv);
269 file->driver_priv = NULL;
270 }
271
exynos_drm_lastclose(struct drm_device * dev)272 static void exynos_drm_lastclose(struct drm_device *dev)
273 {
274 exynos_drm_fbdev_restore_mode(dev);
275 }
276
277 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
278 .fault = exynos_drm_gem_fault,
279 .open = drm_gem_vm_open,
280 .close = drm_gem_vm_close,
281 };
282
283 static const struct drm_ioctl_desc exynos_ioctls[] = {
284 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
285 DRM_UNLOCKED | DRM_AUTH),
286 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
287 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
288 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
289 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
290 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
291 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
292 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
293 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
294 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
295 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
296 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
297 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
298 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
299 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
300 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
301 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
302 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
303 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
304 };
305
306 static const struct file_operations exynos_drm_driver_fops = {
307 .owner = THIS_MODULE,
308 .open = drm_open,
309 .mmap = exynos_drm_gem_mmap,
310 .poll = drm_poll,
311 .read = drm_read,
312 .unlocked_ioctl = drm_ioctl,
313 #ifdef CONFIG_COMPAT
314 .compat_ioctl = drm_compat_ioctl,
315 #endif
316 .release = drm_release,
317 };
318
319 static struct drm_driver exynos_drm_driver = {
320 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
321 .load = exynos_drm_load,
322 .unload = exynos_drm_unload,
323 .suspend = exynos_drm_suspend,
324 .resume = exynos_drm_resume,
325 .open = exynos_drm_open,
326 .preclose = exynos_drm_preclose,
327 .lastclose = exynos_drm_lastclose,
328 .postclose = exynos_drm_postclose,
329 .set_busid = drm_platform_set_busid,
330 .get_vblank_counter = drm_vblank_count,
331 .enable_vblank = exynos_drm_crtc_enable_vblank,
332 .disable_vblank = exynos_drm_crtc_disable_vblank,
333 .gem_free_object = exynos_drm_gem_free_object,
334 .gem_vm_ops = &exynos_drm_gem_vm_ops,
335 .dumb_create = exynos_drm_gem_dumb_create,
336 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
337 .dumb_destroy = drm_gem_dumb_destroy,
338 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
339 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
340 .gem_prime_export = exynos_dmabuf_prime_export,
341 .gem_prime_import = exynos_dmabuf_prime_import,
342 .ioctls = exynos_ioctls,
343 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
344 .fops = &exynos_drm_driver_fops,
345 .name = DRIVER_NAME,
346 .desc = DRIVER_DESC,
347 .date = DRIVER_DATE,
348 .major = DRIVER_MAJOR,
349 .minor = DRIVER_MINOR,
350 };
351
352 #ifdef CONFIG_PM_SLEEP
exynos_drm_sys_suspend(struct device * dev)353 static int exynos_drm_sys_suspend(struct device *dev)
354 {
355 struct drm_device *drm_dev = dev_get_drvdata(dev);
356 pm_message_t message;
357
358 if (pm_runtime_suspended(dev) || !drm_dev)
359 return 0;
360
361 message.event = PM_EVENT_SUSPEND;
362 return exynos_drm_suspend(drm_dev, message);
363 }
364
exynos_drm_sys_resume(struct device * dev)365 static int exynos_drm_sys_resume(struct device *dev)
366 {
367 struct drm_device *drm_dev = dev_get_drvdata(dev);
368
369 if (pm_runtime_suspended(dev) || !drm_dev)
370 return 0;
371
372 return exynos_drm_resume(drm_dev);
373 }
374 #endif
375
376 static const struct dev_pm_ops exynos_drm_pm_ops = {
377 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
378 };
379
exynos_drm_component_add(struct device * dev,enum exynos_drm_device_type dev_type,enum exynos_drm_output_type out_type)380 int exynos_drm_component_add(struct device *dev,
381 enum exynos_drm_device_type dev_type,
382 enum exynos_drm_output_type out_type)
383 {
384 struct component_dev *cdev;
385
386 if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
387 dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
388 DRM_ERROR("invalid device type.\n");
389 return -EINVAL;
390 }
391
392 mutex_lock(&drm_component_lock);
393
394 /*
395 * Make sure to check if there is a component which has two device
396 * objects, for connector and for encoder/connector.
397 * It should make sure that crtc and encoder/connector drivers are
398 * ready before exynos drm core binds them.
399 */
400 list_for_each_entry(cdev, &drm_component_list, list) {
401 if (cdev->out_type == out_type) {
402 /*
403 * If crtc and encoder/connector device objects are
404 * added already just return.
405 */
406 if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
407 EXYNOS_DEVICE_TYPE_CONNECTOR)) {
408 mutex_unlock(&drm_component_lock);
409 return 0;
410 }
411
412 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
413 cdev->crtc_dev = dev;
414 cdev->dev_type_flag |= dev_type;
415 }
416
417 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
418 cdev->conn_dev = dev;
419 cdev->dev_type_flag |= dev_type;
420 }
421
422 mutex_unlock(&drm_component_lock);
423 return 0;
424 }
425 }
426
427 mutex_unlock(&drm_component_lock);
428
429 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
430 if (!cdev)
431 return -ENOMEM;
432
433 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
434 cdev->crtc_dev = dev;
435 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
436 cdev->conn_dev = dev;
437
438 cdev->out_type = out_type;
439 cdev->dev_type_flag = dev_type;
440
441 mutex_lock(&drm_component_lock);
442 list_add_tail(&cdev->list, &drm_component_list);
443 mutex_unlock(&drm_component_lock);
444
445 return 0;
446 }
447
exynos_drm_component_del(struct device * dev,enum exynos_drm_device_type dev_type)448 void exynos_drm_component_del(struct device *dev,
449 enum exynos_drm_device_type dev_type)
450 {
451 struct component_dev *cdev, *next;
452
453 mutex_lock(&drm_component_lock);
454
455 list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
456 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
457 if (cdev->crtc_dev == dev) {
458 cdev->crtc_dev = NULL;
459 cdev->dev_type_flag &= ~dev_type;
460 }
461 }
462
463 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
464 if (cdev->conn_dev == dev) {
465 cdev->conn_dev = NULL;
466 cdev->dev_type_flag &= ~dev_type;
467 }
468 }
469
470 /*
471 * Release cdev object only in case that both of crtc and
472 * encoder/connector device objects are NULL.
473 */
474 if (!cdev->crtc_dev && !cdev->conn_dev) {
475 list_del(&cdev->list);
476 kfree(cdev);
477 }
478
479 break;
480 }
481
482 mutex_unlock(&drm_component_lock);
483 }
484
compare_dev(struct device * dev,void * data)485 static int compare_dev(struct device *dev, void *data)
486 {
487 return dev == (struct device *)data;
488 }
489
exynos_drm_match_add(struct device * dev)490 static struct component_match *exynos_drm_match_add(struct device *dev)
491 {
492 struct component_match *match = NULL;
493 struct component_dev *cdev;
494 unsigned int attach_cnt = 0;
495
496 mutex_lock(&drm_component_lock);
497
498 /* Do not retry to probe if there is no any kms driver regitered. */
499 if (list_empty(&drm_component_list)) {
500 mutex_unlock(&drm_component_lock);
501 return ERR_PTR(-ENODEV);
502 }
503
504 list_for_each_entry(cdev, &drm_component_list, list) {
505 /*
506 * Add components to master only in case that crtc and
507 * encoder/connector device objects exist.
508 */
509 if (!cdev->crtc_dev || !cdev->conn_dev)
510 continue;
511
512 attach_cnt++;
513
514 mutex_unlock(&drm_component_lock);
515
516 /*
517 * fimd and dpi modules have same device object so add
518 * only crtc device object in this case.
519 */
520 if (cdev->crtc_dev == cdev->conn_dev) {
521 component_match_add(dev, &match, compare_dev,
522 cdev->crtc_dev);
523 goto out_lock;
524 }
525
526 /*
527 * Do not chage below call order.
528 * crtc device first should be added to master because
529 * connector/encoder need pipe number of crtc when they
530 * are created.
531 */
532 component_match_add(dev, &match, compare_dev, cdev->crtc_dev);
533 component_match_add(dev, &match, compare_dev, cdev->conn_dev);
534
535 out_lock:
536 mutex_lock(&drm_component_lock);
537 }
538
539 mutex_unlock(&drm_component_lock);
540
541 return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER);
542 }
543
exynos_drm_bind(struct device * dev)544 static int exynos_drm_bind(struct device *dev)
545 {
546 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
547 }
548
exynos_drm_unbind(struct device * dev)549 static void exynos_drm_unbind(struct device *dev)
550 {
551 drm_put_dev(dev_get_drvdata(dev));
552 }
553
554 static const struct component_master_ops exynos_drm_ops = {
555 .bind = exynos_drm_bind,
556 .unbind = exynos_drm_unbind,
557 };
558
exynos_drm_platform_probe(struct platform_device * pdev)559 static int exynos_drm_platform_probe(struct platform_device *pdev)
560 {
561 struct component_match *match;
562 int ret;
563
564 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
565 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
566
567 #ifdef CONFIG_DRM_EXYNOS_FIMD
568 ret = platform_driver_register(&fimd_driver);
569 if (ret < 0)
570 return ret;
571 #endif
572
573 #ifdef CONFIG_DRM_EXYNOS_DP
574 ret = platform_driver_register(&dp_driver);
575 if (ret < 0)
576 goto err_unregister_fimd_drv;
577 #endif
578
579 #ifdef CONFIG_DRM_EXYNOS_DSI
580 ret = platform_driver_register(&dsi_driver);
581 if (ret < 0)
582 goto err_unregister_dp_drv;
583 #endif
584
585 #ifdef CONFIG_DRM_EXYNOS_HDMI
586 ret = platform_driver_register(&mixer_driver);
587 if (ret < 0)
588 goto err_unregister_dsi_drv;
589 ret = platform_driver_register(&hdmi_driver);
590 if (ret < 0)
591 goto err_unregister_mixer_drv;
592 #endif
593
594 match = exynos_drm_match_add(&pdev->dev);
595 if (IS_ERR(match)) {
596 ret = PTR_ERR(match);
597 goto err_unregister_hdmi_drv;
598 }
599
600 ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
601 match);
602 if (ret < 0)
603 goto err_unregister_hdmi_drv;
604
605 #ifdef CONFIG_DRM_EXYNOS_G2D
606 ret = platform_driver_register(&g2d_driver);
607 if (ret < 0)
608 goto err_del_component_master;
609 #endif
610
611 #ifdef CONFIG_DRM_EXYNOS_FIMC
612 ret = platform_driver_register(&fimc_driver);
613 if (ret < 0)
614 goto err_unregister_g2d_drv;
615 #endif
616
617 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
618 ret = platform_driver_register(&rotator_driver);
619 if (ret < 0)
620 goto err_unregister_fimc_drv;
621 #endif
622
623 #ifdef CONFIG_DRM_EXYNOS_GSC
624 ret = platform_driver_register(&gsc_driver);
625 if (ret < 0)
626 goto err_unregister_rotator_drv;
627 #endif
628
629 #ifdef CONFIG_DRM_EXYNOS_IPP
630 ret = platform_driver_register(&ipp_driver);
631 if (ret < 0)
632 goto err_unregister_gsc_drv;
633
634 ret = exynos_platform_device_ipp_register();
635 if (ret < 0)
636 goto err_unregister_ipp_drv;
637 #endif
638
639 return ret;
640
641 #ifdef CONFIG_DRM_EXYNOS_IPP
642 err_unregister_ipp_drv:
643 platform_driver_unregister(&ipp_driver);
644 err_unregister_gsc_drv:
645 #endif
646
647 #ifdef CONFIG_DRM_EXYNOS_GSC
648 platform_driver_unregister(&gsc_driver);
649 err_unregister_rotator_drv:
650 #endif
651
652 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
653 platform_driver_unregister(&rotator_driver);
654 err_unregister_fimc_drv:
655 #endif
656
657 #ifdef CONFIG_DRM_EXYNOS_FIMC
658 platform_driver_unregister(&fimc_driver);
659 err_unregister_g2d_drv:
660 #endif
661
662 #ifdef CONFIG_DRM_EXYNOS_G2D
663 platform_driver_unregister(&g2d_driver);
664 err_del_component_master:
665 #endif
666 component_master_del(&pdev->dev, &exynos_drm_ops);
667
668 err_unregister_hdmi_drv:
669 #ifdef CONFIG_DRM_EXYNOS_HDMI
670 platform_driver_unregister(&hdmi_driver);
671 err_unregister_mixer_drv:
672 platform_driver_unregister(&mixer_driver);
673 err_unregister_dsi_drv:
674 #endif
675
676 #ifdef CONFIG_DRM_EXYNOS_DSI
677 platform_driver_unregister(&dsi_driver);
678 err_unregister_dp_drv:
679 #endif
680
681 #ifdef CONFIG_DRM_EXYNOS_DP
682 platform_driver_unregister(&dp_driver);
683 err_unregister_fimd_drv:
684 #endif
685
686 #ifdef CONFIG_DRM_EXYNOS_FIMD
687 platform_driver_unregister(&fimd_driver);
688 #endif
689 return ret;
690 }
691
exynos_drm_platform_remove(struct platform_device * pdev)692 static int exynos_drm_platform_remove(struct platform_device *pdev)
693 {
694 #ifdef CONFIG_DRM_EXYNOS_IPP
695 exynos_platform_device_ipp_unregister();
696 platform_driver_unregister(&ipp_driver);
697 #endif
698
699 #ifdef CONFIG_DRM_EXYNOS_GSC
700 platform_driver_unregister(&gsc_driver);
701 #endif
702
703 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
704 platform_driver_unregister(&rotator_driver);
705 #endif
706
707 #ifdef CONFIG_DRM_EXYNOS_FIMC
708 platform_driver_unregister(&fimc_driver);
709 #endif
710
711 #ifdef CONFIG_DRM_EXYNOS_G2D
712 platform_driver_unregister(&g2d_driver);
713 #endif
714
715 #ifdef CONFIG_DRM_EXYNOS_HDMI
716 platform_driver_unregister(&mixer_driver);
717 platform_driver_unregister(&hdmi_driver);
718 #endif
719
720 #ifdef CONFIG_DRM_EXYNOS_FIMD
721 platform_driver_unregister(&fimd_driver);
722 #endif
723
724 #ifdef CONFIG_DRM_EXYNOS_DSI
725 platform_driver_unregister(&dsi_driver);
726 #endif
727
728 #ifdef CONFIG_DRM_EXYNOS_DP
729 platform_driver_unregister(&dp_driver);
730 #endif
731 component_master_del(&pdev->dev, &exynos_drm_ops);
732 return 0;
733 }
734
735 static struct platform_driver exynos_drm_platform_driver = {
736 .probe = exynos_drm_platform_probe,
737 .remove = exynos_drm_platform_remove,
738 .driver = {
739 .owner = THIS_MODULE,
740 .name = "exynos-drm",
741 .pm = &exynos_drm_pm_ops,
742 },
743 };
744
exynos_drm_init(void)745 static int exynos_drm_init(void)
746 {
747 int ret;
748
749 /*
750 * Register device object only in case of Exynos SoC.
751 *
752 * Below codes resolves temporarily infinite loop issue incurred
753 * by Exynos drm driver when using multi-platform kernel.
754 * So these codes will be replaced with more generic way later.
755 */
756 if (!of_machine_is_compatible("samsung,exynos3") &&
757 !of_machine_is_compatible("samsung,exynos4") &&
758 !of_machine_is_compatible("samsung,exynos5"))
759 return -ENODEV;
760
761 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
762 NULL, 0);
763 if (IS_ERR(exynos_drm_pdev))
764 return PTR_ERR(exynos_drm_pdev);
765
766 #ifdef CONFIG_DRM_EXYNOS_VIDI
767 ret = exynos_drm_probe_vidi();
768 if (ret < 0)
769 goto err_unregister_pd;
770 #endif
771
772 ret = platform_driver_register(&exynos_drm_platform_driver);
773 if (ret)
774 goto err_remove_vidi;
775
776 return 0;
777
778 err_remove_vidi:
779 #ifdef CONFIG_DRM_EXYNOS_VIDI
780 exynos_drm_remove_vidi();
781
782 err_unregister_pd:
783 #endif
784 platform_device_unregister(exynos_drm_pdev);
785
786 return ret;
787 }
788
exynos_drm_exit(void)789 static void exynos_drm_exit(void)
790 {
791 platform_driver_unregister(&exynos_drm_platform_driver);
792 #ifdef CONFIG_DRM_EXYNOS_VIDI
793 exynos_drm_remove_vidi();
794 #endif
795 platform_device_unregister(exynos_drm_pdev);
796 }
797
798 module_init(exynos_drm_init);
799 module_exit(exynos_drm_exit);
800
801 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
802 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
803 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
804 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
805 MODULE_LICENSE("GPL");
806