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 <drm/drmP.h>
  15 #include <drm/drm_crtc_helper.h>
  16
  17 #include <linux/anon_inodes.h>
  18
  19 #include <drm/exynos_drm.h>
  20
  21 #include "exynos_drm_drv.h"
  22 #include "exynos_drm_crtc.h"
  23 #include "exynos_drm_encoder.h"
  24 #include "exynos_drm_fbdev.h"
  25 #include "exynos_drm_fb.h"
  26 #include "exynos_drm_gem.h"
  27 #include "exynos_drm_plane.h"
  28 #include "exynos_drm_vidi.h"
  29 #include "exynos_drm_dmabuf.h"
  30 #include "exynos_drm_g2d.h"
  31 #include "exynos_drm_ipp.h"
  32 #include "exynos_drm_iommu.h"
  33
  34 #define DRIVER_NAME     "exynos"
  35 #define DRIVER_DESC     "Samsung SoC DRM"
  36 #define DRIVER_DATE     "20110530"
  37 #define DRIVER_MAJOR    1
  38 #define DRIVER_MINOR    0
  39
  40 #define VBLANK_OFF_DELAY        50000
  41
  42 /* platform device pointer for eynos drm device. */
  43 static struct platform_device *exynos_drm_pdev;
  44
  45 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  46 {
  47         struct exynos_drm_private *private;
  48         int ret;
  49         int nr;
  50
  51         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  52         if (!private)
  53                 return -ENOMEM;
  54
  55         INIT_LIST_HEAD(&private->pageflip_event_list);
  56         dev->dev_private = (void *)private;
  57
  58         /*
  59          * create mapping to manage iommu table and set a pointer to iommu
  60          * mapping structure to iommu_mapping of private data.
  61          * also this iommu_mapping can be used to check if iommu is supported
  62          * or not.
  63          */
  64         ret = drm_create_iommu_mapping(dev);
  65         if (ret < 0) {
  66                 DRM_ERROR("failed to create iommu mapping.\n");
  67                 goto err_crtc;
  68         }
  69
  70         drm_mode_config_init(dev);
  71
  72         /* init kms poll for handling hpd */
  73         drm_kms_helper_poll_init(dev);
  74
  75         exynos_drm_mode_config_init(dev);
  76
  77         /*
  78          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  79          * without dependency of hardware.
  80          */
  81         for (nr = 0; nr < MAX_CRTC; nr++) {
  82                 ret = exynos_drm_crtc_create(dev, nr);
  83                 if (ret)
  84                         goto err_release_iommu_mapping;
  85         }
  86
  87         for (nr = 0; nr < MAX_PLANE; nr++) {
  88                 struct drm_plane *plane;
  89                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
  90
  91                 plane = exynos_plane_init(dev, possible_crtcs, false);
  92                 if (!plane)
  93                         goto err_release_iommu_mapping;
  94         }
  95
  96         ret = drm_vblank_init(dev, MAX_CRTC);
  97         if (ret)
  98                 goto err_release_iommu_mapping;
  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         /*
 113          * create and configure fb helper and also exynos specific
 114          * fbdev object.
 115          */
 116         ret = exynos_drm_fbdev_init(dev);
 117         if (ret) {
 118                 DRM_ERROR("failed to initialize drm fbdev\n");
 119                 goto err_drm_device;
 120         }
 121
 122         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 123
 124         platform_set_drvdata(dev->platformdev, dev);
 125
 126         return 0;
 127
 128 err_drm_device:
 129         exynos_drm_device_unregister(dev);
 130 err_vblank:
 131         drm_vblank_cleanup(dev);
 132 err_release_iommu_mapping:
 133         drm_release_iommu_mapping(dev);
 134 err_crtc:
 135         drm_mode_config_cleanup(dev);
 136         kfree(private);
 137
 138         return ret;
 139 }
 140
 141 static int exynos_drm_unload(struct drm_device *dev)
 142 {
 143         exynos_drm_fbdev_fini(dev);
 144         exynos_drm_device_unregister(dev);
 145         drm_vblank_cleanup(dev);
 146         drm_kms_helper_poll_fini(dev);
 147         drm_mode_config_cleanup(dev);
 148
 149         drm_release_iommu_mapping(dev);
 150         kfree(dev->dev_private);
 151
 152         dev->dev_private = NULL;
 153
 154         return 0;
 155 }
 156
 157 static const struct file_operations exynos_drm_gem_fops = {
 158         .mmap = exynos_drm_gem_mmap_buffer,
 159 };
 160
 161 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 162 {
 163         struct drm_exynos_file_private *file_priv;
 164         struct file *anon_filp;
 165         int ret;
 166
 167         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 168         if (!file_priv)
 169                 return -ENOMEM;
 170
 171         file->driver_priv = file_priv;
 172
 173         ret = exynos_drm_subdrv_open(dev, file);
 174         if (ret)
 175                 goto out;
 176
 177         anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
 178                                         NULL, 0);
 179         if (IS_ERR(anon_filp)) {
 180                 ret = PTR_ERR(anon_filp);
 181                 goto out;
 182         }
 183
 184         anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
 185         file_priv->anon_filp = anon_filp;
 186
 187         return ret;
 188 out:
 189         kfree(file_priv);
 190         file->driver_priv = NULL;
 191         return ret;
 192 }
 193
 194 static void exynos_drm_preclose(struct drm_device *dev,
 195                                         struct drm_file *file)
 196 {
 197         exynos_drm_subdrv_close(dev, file);
 198 }
 199
 200 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 201 {
 202         struct exynos_drm_private *private = dev->dev_private;
 203         struct drm_exynos_file_private *file_priv;
 204         struct drm_pending_vblank_event *v, *vt;
 205         struct drm_pending_event *e, *et;
 206         unsigned long flags;
 207
 208         if (!file->driver_priv)
 209                 return;
 210
 211         /* Release all events not unhandled by page flip handler. */
 212         spin_lock_irqsave(&dev->event_lock, flags);
 213         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 214                         base.link) {
 215                 if (v->base.file_priv == file) {
 216                         list_del(&v->base.link);
 217                         drm_vblank_put(dev, v->pipe);
 218                         v->base.destroy(&v->base);
 219                 }
 220         }
 221
 222         /* Release all events handled by page flip handler but not freed. */
 223         list_for_each_entry_safe(e, et, &file->event_list, link) {
 224                 list_del(&e->link);
 225                 e->destroy(e);
 226         }
 227         spin_unlock_irqrestore(&dev->event_lock, flags);
 228
 229         file_priv = file->driver_priv;
 230         if (file_priv->anon_filp)
 231                 fput(file_priv->anon_filp);
 232
 233         kfree(file->driver_priv);
 234         file->driver_priv = NULL;
 235 }
 236
 237 static void exynos_drm_lastclose(struct drm_device *dev)
 238 {
 239         exynos_drm_fbdev_restore_mode(dev);
 240 }
 241
 242 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 243         .fault = exynos_drm_gem_fault,
 244         .open = drm_gem_vm_open,
 245         .close = drm_gem_vm_close,
 246 };
 247
 248 static const struct drm_ioctl_desc exynos_ioctls[] = {
 249         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 250                         DRM_UNLOCKED | DRM_AUTH),
 251         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 252                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 253                         DRM_AUTH),
 254         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 255                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 256         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 257                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 258         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 259                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 260         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 261                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 262         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 263                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 264         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 265                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 266         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 267                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 268         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 269                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 270         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 271                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 272         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 273                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 274 };
 275
 276 static const struct file_operations exynos_drm_driver_fops = {
 277         .owner          = THIS_MODULE,
 278         .open           = drm_open,
 279         .mmap           = exynos_drm_gem_mmap,
 280         .poll           = drm_poll,
 281         .read           = drm_read,
 282         .unlocked_ioctl = drm_ioctl,
 283 #ifdef CONFIG_COMPAT
 284         .compat_ioctl = drm_compat_ioctl,
 285 #endif
 286         .release        = drm_release,
 287 };
 288
 289 static struct drm_driver exynos_drm_driver = {
 290         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 291                                         DRIVER_GEM | DRIVER_PRIME,
 292         .load                   = exynos_drm_load,
 293         .unload                 = exynos_drm_unload,
 294         .open                   = exynos_drm_open,
 295         .preclose               = exynos_drm_preclose,
 296         .lastclose              = exynos_drm_lastclose,
 297         .postclose              = exynos_drm_postclose,
 298         .get_vblank_counter     = drm_vblank_count,
 299         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 300         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 301         .gem_free_object        = exynos_drm_gem_free_object,
 302         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 303         .dumb_create            = exynos_drm_gem_dumb_create,
 304         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 305         .dumb_destroy           = drm_gem_dumb_destroy,
 306         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 307         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 308         .gem_prime_export       = exynos_dmabuf_prime_export,
 309         .gem_prime_import       = exynos_dmabuf_prime_import,
 310         .ioctls                 = exynos_ioctls,
 311         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 312         .fops                   = &exynos_drm_driver_fops,
 313         .name   = DRIVER_NAME,
 314         .desc   = DRIVER_DESC,
 315         .date   = DRIVER_DATE,
 316         .major  = DRIVER_MAJOR,
 317         .minor  = DRIVER_MINOR,
 318 };
 319
 320 static int exynos_drm_platform_probe(struct platform_device *pdev)
 321 {
 322         int ret;
 323
 324         ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 325         if (ret)
 326                 return ret;
 327
 328         return drm_platform_init(&exynos_drm_driver, pdev);
 329 }
 330
 331 static int exynos_drm_platform_remove(struct platform_device *pdev)
 332 {
 333         drm_put_dev(platform_get_drvdata(pdev));
 334
 335         return 0;
 336 }
 337
 338 static struct platform_driver exynos_drm_platform_driver = {
 339         .probe          = exynos_drm_platform_probe,
 340         .remove         = exynos_drm_platform_remove,
 341         .driver         = {
 342                 .owner  = THIS_MODULE,
 343                 .name   = "exynos-drm",
 344         },
 345 };
 346
 347 static int __init exynos_drm_init(void)
 348 {
 349         int ret;
 350
 351 #ifdef CONFIG_DRM_EXYNOS_FIMD
 352         ret = platform_driver_register(&fimd_driver);
 353         if (ret < 0)
 354                 goto out_fimd;
 355 #endif
 356
 357 #ifdef CONFIG_DRM_EXYNOS_HDMI
 358         ret = platform_driver_register(&hdmi_driver);
 359         if (ret < 0)
 360                 goto out_hdmi;
 361         ret = platform_driver_register(&mixer_driver);
 362         if (ret < 0)
 363                 goto out_mixer;
 364         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 365         if (ret < 0)
 366                 goto out_common_hdmi;
 367
 368         ret = exynos_platform_device_hdmi_register();
 369         if (ret < 0)
 370                 goto out_common_hdmi_dev;
 371 #endif
 372
 373 #ifdef CONFIG_DRM_EXYNOS_VIDI
 374         ret = platform_driver_register(&vidi_driver);
 375         if (ret < 0)
 376                 goto out_vidi;
 377 #endif
 378
 379 #ifdef CONFIG_DRM_EXYNOS_G2D
 380         ret = platform_driver_register(&g2d_driver);
 381         if (ret < 0)
 382                 goto out_g2d;
 383 #endif
 384
 385 #ifdef CONFIG_DRM_EXYNOS_FIMC
 386         ret = platform_driver_register(&fimc_driver);
 387         if (ret < 0)
 388                 goto out_fimc;
 389 #endif
 390
 391 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 392         ret = platform_driver_register(&rotator_driver);
 393         if (ret < 0)
 394                 goto out_rotator;
 395 #endif
 396
 397 #ifdef CONFIG_DRM_EXYNOS_GSC
 398         ret = platform_driver_register(&gsc_driver);
 399         if (ret < 0)
 400                 goto out_gsc;
 401 #endif
 402
 403 #ifdef CONFIG_DRM_EXYNOS_IPP
 404         ret = platform_driver_register(&ipp_driver);
 405         if (ret < 0)
 406                 goto out_ipp;
 407
 408         ret = exynos_platform_device_ipp_register();
 409         if (ret < 0)
 410                 goto out_ipp_dev;
 411 #endif
 412
 413         ret = platform_driver_register(&exynos_drm_platform_driver);
 414         if (ret < 0)
 415                 goto out_drm;
 416
 417         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 418                                 NULL, 0);
 419         if (IS_ERR(exynos_drm_pdev)) {
 420                 ret = PTR_ERR(exynos_drm_pdev);
 421                 goto out;
 422         }
 423
 424         return 0;
 425
 426 out:
 427         platform_driver_unregister(&exynos_drm_platform_driver);
 428
 429 out_drm:
 430 #ifdef CONFIG_DRM_EXYNOS_IPP
 431         exynos_platform_device_ipp_unregister();
 432 out_ipp_dev:
 433         platform_driver_unregister(&ipp_driver);
 434 out_ipp:
 435 #endif
 436
 437 #ifdef CONFIG_DRM_EXYNOS_GSC
 438         platform_driver_unregister(&gsc_driver);
 439 out_gsc:
 440 #endif
 441
 442 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 443         platform_driver_unregister(&rotator_driver);
 444 out_rotator:
 445 #endif
 446
 447 #ifdef CONFIG_DRM_EXYNOS_FIMC
 448         platform_driver_unregister(&fimc_driver);
 449 out_fimc:
 450 #endif
 451
 452 #ifdef CONFIG_DRM_EXYNOS_G2D
 453         platform_driver_unregister(&g2d_driver);
 454 out_g2d:
 455 #endif
 456
 457 #ifdef CONFIG_DRM_EXYNOS_VIDI
 458         platform_driver_unregister(&vidi_driver);
 459 out_vidi:
 460 #endif
 461
 462 #ifdef CONFIG_DRM_EXYNOS_HDMI
 463         exynos_platform_device_hdmi_unregister();
 464 out_common_hdmi_dev:
 465         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 466 out_common_hdmi:
 467         platform_driver_unregister(&mixer_driver);
 468 out_mixer:
 469         platform_driver_unregister(&hdmi_driver);
 470 out_hdmi:
 471 #endif
 472
 473 #ifdef CONFIG_DRM_EXYNOS_FIMD
 474         platform_driver_unregister(&fimd_driver);
 475 out_fimd:
 476 #endif
 477         return ret;
 478 }
 479
 480 static void __exit exynos_drm_exit(void)
 481 {
 482         platform_device_unregister(exynos_drm_pdev);
 483
 484         platform_driver_unregister(&exynos_drm_platform_driver);
 485
 486 #ifdef CONFIG_DRM_EXYNOS_IPP
 487         exynos_platform_device_ipp_unregister();
 488         platform_driver_unregister(&ipp_driver);
 489 #endif
 490
 491 #ifdef CONFIG_DRM_EXYNOS_GSC
 492         platform_driver_unregister(&gsc_driver);
 493 #endif
 494
 495 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 496         platform_driver_unregister(&rotator_driver);
 497 #endif
 498
 499 #ifdef CONFIG_DRM_EXYNOS_FIMC
 500         platform_driver_unregister(&fimc_driver);
 501 #endif
 502
 503 #ifdef CONFIG_DRM_EXYNOS_G2D
 504         platform_driver_unregister(&g2d_driver);
 505 #endif
 506
 507 #ifdef CONFIG_DRM_EXYNOS_HDMI
 508         exynos_platform_device_hdmi_unregister();
 509         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 510         platform_driver_unregister(&mixer_driver);
 511         platform_driver_unregister(&hdmi_driver);
 512 #endif
 513
 514 #ifdef CONFIG_DRM_EXYNOS_VIDI
 515         platform_driver_unregister(&vidi_driver);
 516 #endif
 517
 518 #ifdef CONFIG_DRM_EXYNOS_FIMD
 519         platform_driver_unregister(&fimd_driver);
 520 #endif
 521 }
 522
 523 module_init(exynos_drm_init);
 524 module_exit(exynos_drm_exit);
 525
 526 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 527 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 528 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 529 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 530 MODULE_LICENSE("GPL");