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"); 743