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/anon_inodes.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 #define VBLANK_OFF_DELAY 50000 42 43 /* platform device pointer for eynos drm device. */ 44 static struct platform_device *exynos_drm_pdev; 45 46 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 47 { 48 struct exynos_drm_private *private; 49 int ret; 50 int nr; 51 52 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 53 if (!private) 54 return -ENOMEM; 55 56 INIT_LIST_HEAD(&private->pageflip_event_list); 57 dev_set_drvdata(dev->dev, dev); 58 dev->dev_private = (void *)private; 59 60 /* 61 * create mapping to manage iommu table and set a pointer to iommu 62 * mapping structure to iommu_mapping of private data. 63 * also this iommu_mapping can be used to check if iommu is supported 64 * or not. 65 */ 66 ret = drm_create_iommu_mapping(dev); 67 if (ret < 0) { 68 DRM_ERROR("failed to create iommu mapping.\n"); 69 goto err_free_private; 70 } 71 72 drm_mode_config_init(dev); 73 74 exynos_drm_mode_config_init(dev); 75 76 ret = exynos_drm_initialize_managers(dev); 77 if (ret) 78 goto err_mode_config_cleanup; 79 80 for (nr = 0; nr < MAX_PLANE; nr++) { 81 struct drm_plane *plane; 82 unsigned long possible_crtcs = (1 << MAX_CRTC) - 1; 83 84 plane = exynos_plane_init(dev, possible_crtcs, false); 85 if (!plane) 86 goto err_manager_cleanup; 87 } 88 89 ret = exynos_drm_initialize_displays(dev); 90 if (ret) 91 goto err_manager_cleanup; 92 93 /* init kms poll for handling hpd */ 94 drm_kms_helper_poll_init(dev); 95 96 ret = drm_vblank_init(dev, MAX_CRTC); 97 if (ret) 98 goto err_display_cleanup; 99 100 /* 101 * probe sub drivers such as display controller and hdmi driver, 102 * that were registered at probe() of platform driver 103 * to the sub driver and create encoder and connector for them. 104 */ 105 ret = exynos_drm_device_register(dev); 106 if (ret) 107 goto err_vblank; 108 109 /* setup possible_clones. */ 110 exynos_drm_encoder_setup(dev); 111 112 drm_vblank_offdelay = VBLANK_OFF_DELAY; 113 114 platform_set_drvdata(dev->platformdev, dev); 115 116 /* force connectors detection */ 117 drm_helper_hpd_irq_event(dev); 118 119 return 0; 120 121 err_vblank: 122 drm_vblank_cleanup(dev); 123 err_display_cleanup: 124 exynos_drm_remove_displays(dev); 125 err_manager_cleanup: 126 exynos_drm_remove_managers(dev); 127 err_mode_config_cleanup: 128 drm_mode_config_cleanup(dev); 129 drm_release_iommu_mapping(dev); 130 err_free_private: 131 kfree(private); 132 133 return ret; 134 } 135 136 static int exynos_drm_unload(struct drm_device *dev) 137 { 138 exynos_drm_fbdev_fini(dev); 139 exynos_drm_device_unregister(dev); 140 drm_vblank_cleanup(dev); 141 drm_kms_helper_poll_fini(dev); 142 exynos_drm_remove_displays(dev); 143 exynos_drm_remove_managers(dev); 144 drm_mode_config_cleanup(dev); 145 146 drm_release_iommu_mapping(dev); 147 kfree(dev->dev_private); 148 149 dev->dev_private = NULL; 150 151 return 0; 152 } 153 154 static const struct file_operations exynos_drm_gem_fops = { 155 .mmap = exynos_drm_gem_mmap_buffer, 156 }; 157 158 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state) 159 { 160 struct drm_connector *connector; 161 162 drm_modeset_lock_all(dev); 163 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 164 int old_dpms = connector->dpms; 165 166 if (connector->funcs->dpms) 167 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); 168 169 /* Set the old mode back to the connector for resume */ 170 connector->dpms = old_dpms; 171 } 172 drm_modeset_unlock_all(dev); 173 174 return 0; 175 } 176 177 static int exynos_drm_resume(struct drm_device *dev) 178 { 179 struct drm_connector *connector; 180 181 drm_modeset_lock_all(dev); 182 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 183 if (connector->funcs->dpms) 184 connector->funcs->dpms(connector, connector->dpms); 185 } 186 187 drm_helper_resume_force_mode(dev); 188 drm_modeset_unlock_all(dev); 189 190 return 0; 191 } 192 193 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 194 { 195 struct drm_exynos_file_private *file_priv; 196 struct file *anon_filp; 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 anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops, 210 NULL, 0); 211 if (IS_ERR(anon_filp)) { 212 ret = PTR_ERR(anon_filp); 213 goto err_subdrv_close; 214 } 215 216 anon_filp->f_mode = FMODE_READ | FMODE_WRITE; 217 file_priv->anon_filp = anon_filp; 218 219 return ret; 220 221 err_subdrv_close: 222 exynos_drm_subdrv_close(dev, file); 223 224 err_file_priv_free: 225 kfree(file_priv); 226 file->driver_priv = NULL; 227 return ret; 228 } 229 230 static void exynos_drm_preclose(struct drm_device *dev, 231 struct drm_file *file) 232 { 233 exynos_drm_subdrv_close(dev, file); 234 } 235 236 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 237 { 238 struct exynos_drm_private *private = dev->dev_private; 239 struct drm_exynos_file_private *file_priv; 240 struct drm_pending_vblank_event *v, *vt; 241 struct drm_pending_event *e, *et; 242 unsigned long flags; 243 244 if (!file->driver_priv) 245 return; 246 247 /* Release all events not unhandled by page flip handler. */ 248 spin_lock_irqsave(&dev->event_lock, flags); 249 list_for_each_entry_safe(v, vt, &private->pageflip_event_list, 250 base.link) { 251 if (v->base.file_priv == file) { 252 list_del(&v->base.link); 253 drm_vblank_put(dev, v->pipe); 254 v->base.destroy(&v->base); 255 } 256 } 257 258 /* Release all events handled by page flip handler but not freed. */ 259 list_for_each_entry_safe(e, et, &file->event_list, link) { 260 list_del(&e->link); 261 e->destroy(e); 262 } 263 spin_unlock_irqrestore(&dev->event_lock, flags); 264 265 file_priv = file->driver_priv; 266 if (file_priv->anon_filp) 267 fput(file_priv->anon_filp); 268 269 kfree(file->driver_priv); 270 file->driver_priv = NULL; 271 } 272 273 static void exynos_drm_lastclose(struct drm_device *dev) 274 { 275 exynos_drm_fbdev_restore_mode(dev); 276 } 277 278 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 279 .fault = exynos_drm_gem_fault, 280 .open = drm_gem_vm_open, 281 .close = drm_gem_vm_close, 282 }; 283 284 static const struct drm_ioctl_desc exynos_ioctls[] = { 285 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 286 DRM_UNLOCKED | DRM_AUTH), 287 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 288 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 289 DRM_AUTH), 290 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 291 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 292 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 293 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 294 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 295 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 296 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 297 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 298 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 299 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 300 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 301 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 302 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 303 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 304 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 305 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 306 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 307 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 308 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 309 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 310 }; 311 312 static const struct file_operations exynos_drm_driver_fops = { 313 .owner = THIS_MODULE, 314 .open = drm_open, 315 .mmap = exynos_drm_gem_mmap, 316 .poll = drm_poll, 317 .read = drm_read, 318 .unlocked_ioctl = drm_ioctl, 319 #ifdef CONFIG_COMPAT 320 .compat_ioctl = drm_compat_ioctl, 321 #endif 322 .release = drm_release, 323 }; 324 325 static struct drm_driver exynos_drm_driver = { 326 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 327 DRIVER_GEM | DRIVER_PRIME, 328 .load = exynos_drm_load, 329 .unload = exynos_drm_unload, 330 .suspend = exynos_drm_suspend, 331 .resume = exynos_drm_resume, 332 .open = exynos_drm_open, 333 .preclose = exynos_drm_preclose, 334 .lastclose = exynos_drm_lastclose, 335 .postclose = exynos_drm_postclose, 336 .get_vblank_counter = drm_vblank_count, 337 .enable_vblank = exynos_drm_crtc_enable_vblank, 338 .disable_vblank = exynos_drm_crtc_disable_vblank, 339 .gem_free_object = exynos_drm_gem_free_object, 340 .gem_vm_ops = &exynos_drm_gem_vm_ops, 341 .dumb_create = exynos_drm_gem_dumb_create, 342 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 343 .dumb_destroy = drm_gem_dumb_destroy, 344 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 345 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 346 .gem_prime_export = exynos_dmabuf_prime_export, 347 .gem_prime_import = exynos_dmabuf_prime_import, 348 .ioctls = exynos_ioctls, 349 .num_ioctls = ARRAY_SIZE(exynos_ioctls), 350 .fops = &exynos_drm_driver_fops, 351 .name = DRIVER_NAME, 352 .desc = DRIVER_DESC, 353 .date = DRIVER_DATE, 354 .major = DRIVER_MAJOR, 355 .minor = DRIVER_MINOR, 356 }; 357 358 static int exynos_drm_platform_probe(struct platform_device *pdev) 359 { 360 int ret; 361 362 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 363 if (ret) 364 return ret; 365 366 pm_runtime_enable(&pdev->dev); 367 pm_runtime_get_sync(&pdev->dev); 368 369 return drm_platform_init(&exynos_drm_driver, pdev); 370 } 371 372 static int exynos_drm_platform_remove(struct platform_device *pdev) 373 { 374 drm_put_dev(platform_get_drvdata(pdev)); 375 376 return 0; 377 } 378 379 #ifdef CONFIG_PM_SLEEP 380 static int exynos_drm_sys_suspend(struct device *dev) 381 { 382 struct drm_device *drm_dev = dev_get_drvdata(dev); 383 pm_message_t message; 384 385 if (pm_runtime_suspended(dev)) 386 return 0; 387 388 message.event = PM_EVENT_SUSPEND; 389 return exynos_drm_suspend(drm_dev, message); 390 } 391 392 static int exynos_drm_sys_resume(struct device *dev) 393 { 394 struct drm_device *drm_dev = dev_get_drvdata(dev); 395 396 if (pm_runtime_suspended(dev)) 397 return 0; 398 399 return exynos_drm_resume(drm_dev); 400 } 401 #endif 402 403 #ifdef CONFIG_PM_RUNTIME 404 static int exynos_drm_runtime_suspend(struct device *dev) 405 { 406 struct drm_device *drm_dev = dev_get_drvdata(dev); 407 pm_message_t message; 408 409 if (pm_runtime_suspended(dev)) 410 return 0; 411 412 message.event = PM_EVENT_SUSPEND; 413 return exynos_drm_suspend(drm_dev, message); 414 } 415 416 static int exynos_drm_runtime_resume(struct device *dev) 417 { 418 struct drm_device *drm_dev = dev_get_drvdata(dev); 419 420 if (!pm_runtime_suspended(dev)) 421 return 0; 422 423 return exynos_drm_resume(drm_dev); 424 } 425 #endif 426 427 static const struct dev_pm_ops exynos_drm_pm_ops = { 428 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume) 429 SET_RUNTIME_PM_OPS(exynos_drm_runtime_suspend, 430 exynos_drm_runtime_resume, NULL) 431 }; 432 433 static struct platform_driver exynos_drm_platform_driver = { 434 .probe = exynos_drm_platform_probe, 435 .remove = exynos_drm_platform_remove, 436 .driver = { 437 .owner = THIS_MODULE, 438 .name = "exynos-drm", 439 .pm = &exynos_drm_pm_ops, 440 }, 441 }; 442 443 static int __init exynos_drm_init(void) 444 { 445 int ret; 446 447 #ifdef CONFIG_DRM_EXYNOS_DP 448 ret = platform_driver_register(&dp_driver); 449 if (ret < 0) 450 goto out_dp; 451 #endif 452 453 #ifdef CONFIG_DRM_EXYNOS_DSI 454 ret = platform_driver_register(&dsi_driver); 455 if (ret < 0) 456 goto out_dsi; 457 #endif 458 459 #ifdef CONFIG_DRM_EXYNOS_FIMD 460 ret = platform_driver_register(&fimd_driver); 461 if (ret < 0) 462 goto out_fimd; 463 #endif 464 465 #ifdef CONFIG_DRM_EXYNOS_HDMI 466 ret = platform_driver_register(&hdmi_driver); 467 if (ret < 0) 468 goto out_hdmi; 469 ret = platform_driver_register(&mixer_driver); 470 if (ret < 0) 471 goto out_mixer; 472 #endif 473 474 #ifdef CONFIG_DRM_EXYNOS_VIDI 475 ret = platform_driver_register(&vidi_driver); 476 if (ret < 0) 477 goto out_vidi; 478 #endif 479 480 #ifdef CONFIG_DRM_EXYNOS_G2D 481 ret = platform_driver_register(&g2d_driver); 482 if (ret < 0) 483 goto out_g2d; 484 #endif 485 486 #ifdef CONFIG_DRM_EXYNOS_FIMC 487 ret = platform_driver_register(&fimc_driver); 488 if (ret < 0) 489 goto out_fimc; 490 #endif 491 492 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 493 ret = platform_driver_register(&rotator_driver); 494 if (ret < 0) 495 goto out_rotator; 496 #endif 497 498 #ifdef CONFIG_DRM_EXYNOS_GSC 499 ret = platform_driver_register(&gsc_driver); 500 if (ret < 0) 501 goto out_gsc; 502 #endif 503 504 #ifdef CONFIG_DRM_EXYNOS_IPP 505 ret = platform_driver_register(&ipp_driver); 506 if (ret < 0) 507 goto out_ipp; 508 509 ret = exynos_platform_device_ipp_register(); 510 if (ret < 0) 511 goto out_ipp_dev; 512 #endif 513 514 ret = platform_driver_register(&exynos_drm_platform_driver); 515 if (ret < 0) 516 goto out_drm; 517 518 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, 519 NULL, 0); 520 if (IS_ERR(exynos_drm_pdev)) { 521 ret = PTR_ERR(exynos_drm_pdev); 522 goto out; 523 } 524 525 return 0; 526 527 out: 528 platform_driver_unregister(&exynos_drm_platform_driver); 529 530 out_drm: 531 #ifdef CONFIG_DRM_EXYNOS_IPP 532 exynos_platform_device_ipp_unregister(); 533 out_ipp_dev: 534 platform_driver_unregister(&ipp_driver); 535 out_ipp: 536 #endif 537 538 #ifdef CONFIG_DRM_EXYNOS_GSC 539 platform_driver_unregister(&gsc_driver); 540 out_gsc: 541 #endif 542 543 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 544 platform_driver_unregister(&rotator_driver); 545 out_rotator: 546 #endif 547 548 #ifdef CONFIG_DRM_EXYNOS_FIMC 549 platform_driver_unregister(&fimc_driver); 550 out_fimc: 551 #endif 552 553 #ifdef CONFIG_DRM_EXYNOS_G2D 554 platform_driver_unregister(&g2d_driver); 555 out_g2d: 556 #endif 557 558 #ifdef CONFIG_DRM_EXYNOS_VIDI 559 platform_driver_unregister(&vidi_driver); 560 out_vidi: 561 #endif 562 563 #ifdef CONFIG_DRM_EXYNOS_HDMI 564 platform_driver_unregister(&mixer_driver); 565 out_mixer: 566 platform_driver_unregister(&hdmi_driver); 567 out_hdmi: 568 #endif 569 570 #ifdef CONFIG_DRM_EXYNOS_FIMD 571 platform_driver_unregister(&fimd_driver); 572 out_fimd: 573 #endif 574 575 #ifdef CONFIG_DRM_EXYNOS_DSI 576 platform_driver_unregister(&dsi_driver); 577 out_dsi: 578 #endif 579 580 #ifdef CONFIG_DRM_EXYNOS_DP 581 platform_driver_unregister(&dp_driver); 582 out_dp: 583 #endif 584 return ret; 585 } 586 587 static void __exit exynos_drm_exit(void) 588 { 589 platform_device_unregister(exynos_drm_pdev); 590 591 platform_driver_unregister(&exynos_drm_platform_driver); 592 593 #ifdef CONFIG_DRM_EXYNOS_IPP 594 exynos_platform_device_ipp_unregister(); 595 platform_driver_unregister(&ipp_driver); 596 #endif 597 598 #ifdef CONFIG_DRM_EXYNOS_GSC 599 platform_driver_unregister(&gsc_driver); 600 #endif 601 602 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 603 platform_driver_unregister(&rotator_driver); 604 #endif 605 606 #ifdef CONFIG_DRM_EXYNOS_FIMC 607 platform_driver_unregister(&fimc_driver); 608 #endif 609 610 #ifdef CONFIG_DRM_EXYNOS_G2D 611 platform_driver_unregister(&g2d_driver); 612 #endif 613 614 #ifdef CONFIG_DRM_EXYNOS_HDMI 615 platform_driver_unregister(&mixer_driver); 616 platform_driver_unregister(&hdmi_driver); 617 #endif 618 619 #ifdef CONFIG_DRM_EXYNOS_VIDI 620 platform_driver_unregister(&vidi_driver); 621 #endif 622 623 #ifdef CONFIG_DRM_EXYNOS_FIMD 624 platform_driver_unregister(&fimd_driver); 625 #endif 626 627 #ifdef CONFIG_DRM_EXYNOS_DSI 628 platform_driver_unregister(&dsi_driver); 629 #endif 630 631 #ifdef CONFIG_DRM_EXYNOS_DP 632 platform_driver_unregister(&dp_driver); 633 #endif 634 } 635 636 module_init(exynos_drm_init); 637 module_exit(exynos_drm_exit); 638 639 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 640 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 641 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 642 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 643 MODULE_LICENSE("GPL"); 644