Version:  2.0.40 2.2.26 2.4.37 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19

Linux/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         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
649                                                                 NULL, 0);
650         if (IS_ERR(exynos_drm_pdev))
651                 return PTR_ERR(exynos_drm_pdev);
652 
653         ret = exynos_drm_probe_vidi();
654         if (ret < 0)
655                 goto err_unregister_pd;
656 
657         for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) {
658                 ret = platform_driver_register(exynos_drm_kms_drivers[i]);
659                 if (ret < 0)
660                         goto err_unregister_kms_drivers;
661         }
662 
663         for (j = 0; j < ARRAY_SIZE(exynos_drm_non_kms_drivers); ++j) {
664                 ret = platform_driver_register(exynos_drm_non_kms_drivers[j]);
665                 if (ret < 0)
666                         goto err_unregister_non_kms_drivers;
667         }
668 
669 #ifdef CONFIG_DRM_EXYNOS_IPP
670         ret = exynos_platform_device_ipp_register();
671         if (ret < 0)
672                 goto err_unregister_non_kms_drivers;
673 #endif
674 
675         ret = platform_driver_register(&exynos_drm_platform_driver);
676         if (ret)
677                 goto err_unregister_resources;
678 
679         return 0;
680 
681 err_unregister_resources:
682 #ifdef CONFIG_DRM_EXYNOS_IPP
683         exynos_platform_device_ipp_unregister();
684 #endif
685 
686 err_unregister_non_kms_drivers:
687         while (--j >= 0)
688                 platform_driver_unregister(exynos_drm_non_kms_drivers[j]);
689 
690 err_unregister_kms_drivers:
691         while (--i >= 0)
692                 platform_driver_unregister(exynos_drm_kms_drivers[i]);
693 
694         exynos_drm_remove_vidi();
695 
696 err_unregister_pd:
697         platform_device_unregister(exynos_drm_pdev);
698 
699         return ret;
700 }
701 
702 static void exynos_drm_exit(void)
703 {
704         int i;
705 
706 #ifdef CONFIG_DRM_EXYNOS_IPP
707         exynos_platform_device_ipp_unregister();
708 #endif
709 
710         for (i = ARRAY_SIZE(exynos_drm_non_kms_drivers) - 1; i >= 0; --i)
711                 platform_driver_unregister(exynos_drm_non_kms_drivers[i]);
712 
713         for (i = ARRAY_SIZE(exynos_drm_kms_drivers) - 1; i >= 0; --i)
714                 platform_driver_unregister(exynos_drm_kms_drivers[i]);
715 
716         platform_driver_unregister(&exynos_drm_platform_driver);
717 
718         exynos_drm_remove_vidi();
719 
720         platform_device_unregister(exynos_drm_pdev);
721 }
722 
723 module_init(exynos_drm_init);
724 module_exit(exynos_drm_exit);
725 
726 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
727 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
728 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
729 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
730 MODULE_LICENSE("GPL");
731 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us