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 err_file_priv_free;
 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 err_subdrv_close;
 182         }
 183
 184         anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
 185         file_priv->anon_filp = anon_filp;
 186
 187         return ret;
 188
 189 err_subdrv_close:
 190         exynos_drm_subdrv_close(dev, file);
 191
 192 err_file_priv_free:
 193         kfree(file_priv);
 194         file->driver_priv = NULL;
 195         return ret;
 196 }
 197
 198 static void exynos_drm_preclose(struct drm_device *dev,
 199                                         struct drm_file *file)
 200 {
 201         exynos_drm_subdrv_close(dev, file);
 202 }
 203
 204 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 205 {
 206         struct exynos_drm_private *private = dev->dev_private;
 207         struct drm_exynos_file_private *file_priv;
 208         struct drm_pending_vblank_event *v, *vt;
 209         struct drm_pending_event *e, *et;
 210         unsigned long flags;
 211
 212         if (!file->driver_priv)
 213                 return;
 214
 215         /* Release all events not unhandled by page flip handler. */
 216         spin_lock_irqsave(&dev->event_lock, flags);
 217         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 218                         base.link) {
 219                 if (v->base.file_priv == file) {
 220                         list_del(&v->base.link);
 221                         drm_vblank_put(dev, v->pipe);
 222                         v->base.destroy(&v->base);
 223                 }
 224         }
 225
 226         /* Release all events handled by page flip handler but not freed. */
 227         list_for_each_entry_safe(e, et, &file->event_list, link) {
 228                 list_del(&e->link);
 229                 e->destroy(e);
 230         }
 231         spin_unlock_irqrestore(&dev->event_lock, flags);
 232
 233         file_priv = file->driver_priv;
 234         if (file_priv->anon_filp)
 235                 fput(file_priv->anon_filp);
 236
 237         kfree(file->driver_priv);
 238         file->driver_priv = NULL;
 239 }
 240
 241 static void exynos_drm_lastclose(struct drm_device *dev)
 242 {
 243         exynos_drm_fbdev_restore_mode(dev);
 244 }
 245
 246 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 247         .fault = exynos_drm_gem_fault,
 248         .open = drm_gem_vm_open,
 249         .close = drm_gem_vm_close,
 250 };
 251
 252 static const struct drm_ioctl_desc exynos_ioctls[] = {
 253         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 254                         DRM_UNLOCKED | DRM_AUTH),
 255         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 256                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 257                         DRM_AUTH),
 258         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 259                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 260         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 261                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 262         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 263                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 264         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 265                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 266         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 267                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 268         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 269                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 270         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 271                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 272         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 273                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 274         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 275                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 276         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 277                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 278 };
 279
 280 static const struct file_operations exynos_drm_driver_fops = {
 281         .owner          = THIS_MODULE,
 282         .open           = drm_open,
 283         .mmap           = exynos_drm_gem_mmap,
 284         .poll           = drm_poll,
 285         .read           = drm_read,
 286         .unlocked_ioctl = drm_ioctl,
 287 #ifdef CONFIG_COMPAT
 288         .compat_ioctl = drm_compat_ioctl,
 289 #endif
 290         .release        = drm_release,
 291 };
 292
 293 static struct drm_driver exynos_drm_driver = {
 294         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 295                                         DRIVER_GEM | DRIVER_PRIME,
 296         .load                   = exynos_drm_load,
 297         .unload                 = exynos_drm_unload,
 298         .open                   = exynos_drm_open,
 299         .preclose               = exynos_drm_preclose,
 300         .lastclose              = exynos_drm_lastclose,
 301         .postclose              = exynos_drm_postclose,
 302         .get_vblank_counter     = drm_vblank_count,
 303         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 304         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 305         .gem_free_object        = exynos_drm_gem_free_object,
 306         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 307         .dumb_create            = exynos_drm_gem_dumb_create,
 308         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 309         .dumb_destroy           = drm_gem_dumb_destroy,
 310         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 311         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 312         .gem_prime_export       = exynos_dmabuf_prime_export,
 313         .gem_prime_import       = exynos_dmabuf_prime_import,
 314         .ioctls                 = exynos_ioctls,
 315         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 316         .fops                   = &exynos_drm_driver_fops,
 317         .name   = DRIVER_NAME,
 318         .desc   = DRIVER_DESC,
 319         .date   = DRIVER_DATE,
 320         .major  = DRIVER_MAJOR,
 321         .minor  = DRIVER_MINOR,
 322 };
 323
 324 static int exynos_drm_platform_probe(struct platform_device *pdev)
 325 {
 326         int ret;
 327
 328         ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 329         if (ret)
 330                 return ret;
 331
 332         return drm_platform_init(&exynos_drm_driver, pdev);
 333 }
 334
 335 static int exynos_drm_platform_remove(struct platform_device *pdev)
 336 {
 337         drm_put_dev(platform_get_drvdata(pdev));
 338
 339         return 0;
 340 }
 341
 342 static struct platform_driver exynos_drm_platform_driver = {
 343         .probe          = exynos_drm_platform_probe,
 344         .remove         = exynos_drm_platform_remove,
 345         .driver         = {
 346                 .owner  = THIS_MODULE,
 347                 .name   = "exynos-drm",
 348         },
 349 };
 350
 351 static int __init exynos_drm_init(void)
 352 {
 353         int ret;
 354
 355 #ifdef CONFIG_DRM_EXYNOS_FIMD
 356         ret = platform_driver_register(&fimd_driver);
 357         if (ret < 0)
 358                 goto out_fimd;
 359 #endif
 360
 361 #ifdef CONFIG_DRM_EXYNOS_HDMI
 362         ret = platform_driver_register(&hdmi_driver);
 363         if (ret < 0)
 364                 goto out_hdmi;
 365         ret = platform_driver_register(&mixer_driver);
 366         if (ret < 0)
 367                 goto out_mixer;
 368         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 369         if (ret < 0)
 370                 goto out_common_hdmi;
 371
 372         ret = exynos_platform_device_hdmi_register();
 373         if (ret < 0)
 374                 goto out_common_hdmi_dev;
 375 #endif
 376
 377 #ifdef CONFIG_DRM_EXYNOS_VIDI
 378         ret = platform_driver_register(&vidi_driver);
 379         if (ret < 0)
 380                 goto out_vidi;
 381 #endif
 382
 383 #ifdef CONFIG_DRM_EXYNOS_G2D
 384         ret = platform_driver_register(&g2d_driver);
 385         if (ret < 0)
 386                 goto out_g2d;
 387 #endif
 388
 389 #ifdef CONFIG_DRM_EXYNOS_FIMC
 390         ret = platform_driver_register(&fimc_driver);
 391         if (ret < 0)
 392                 goto out_fimc;
 393 #endif
 394
 395 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 396         ret = platform_driver_register(&rotator_driver);
 397         if (ret < 0)
 398                 goto out_rotator;
 399 #endif
 400
 401 #ifdef CONFIG_DRM_EXYNOS_GSC
 402         ret = platform_driver_register(&gsc_driver);
 403         if (ret < 0)
 404                 goto out_gsc;
 405 #endif
 406
 407 #ifdef CONFIG_DRM_EXYNOS_IPP
 408         ret = platform_driver_register(&ipp_driver);
 409         if (ret < 0)
 410                 goto out_ipp;
 411
 412         ret = exynos_platform_device_ipp_register();
 413         if (ret < 0)
 414                 goto out_ipp_dev;
 415 #endif
 416
 417         ret = platform_driver_register(&exynos_drm_platform_driver);
 418         if (ret < 0)
 419                 goto out_drm;
 420
 421         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 422                                 NULL, 0);
 423         if (IS_ERR(exynos_drm_pdev)) {
 424                 ret = PTR_ERR(exynos_drm_pdev);
 425                 goto out;
 426         }
 427
 428         return 0;
 429
 430 out:
 431         platform_driver_unregister(&exynos_drm_platform_driver);
 432
 433 out_drm:
 434 #ifdef CONFIG_DRM_EXYNOS_IPP
 435         exynos_platform_device_ipp_unregister();
 436 out_ipp_dev:
 437         platform_driver_unregister(&ipp_driver);
 438 out_ipp:
 439 #endif
 440
 441 #ifdef CONFIG_DRM_EXYNOS_GSC
 442         platform_driver_unregister(&gsc_driver);
 443 out_gsc:
 444 #endif
 445
 446 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 447         platform_driver_unregister(&rotator_driver);
 448 out_rotator:
 449 #endif
 450
 451 #ifdef CONFIG_DRM_EXYNOS_FIMC
 452         platform_driver_unregister(&fimc_driver);
 453 out_fimc:
 454 #endif
 455
 456 #ifdef CONFIG_DRM_EXYNOS_G2D
 457         platform_driver_unregister(&g2d_driver);
 458 out_g2d:
 459 #endif
 460
 461 #ifdef CONFIG_DRM_EXYNOS_VIDI
 462         platform_driver_unregister(&vidi_driver);
 463 out_vidi:
 464 #endif
 465
 466 #ifdef CONFIG_DRM_EXYNOS_HDMI
 467         exynos_platform_device_hdmi_unregister();
 468 out_common_hdmi_dev:
 469         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 470 out_common_hdmi:
 471         platform_driver_unregister(&mixer_driver);
 472 out_mixer:
 473         platform_driver_unregister(&hdmi_driver);
 474 out_hdmi:
 475 #endif
 476
 477 #ifdef CONFIG_DRM_EXYNOS_FIMD
 478         platform_driver_unregister(&fimd_driver);
 479 out_fimd:
 480 #endif
 481         return ret;
 482 }
 483
 484 static void __exit exynos_drm_exit(void)
 485 {
 486         platform_device_unregister(exynos_drm_pdev);
 487
 488         platform_driver_unregister(&exynos_drm_platform_driver);
 489
 490 #ifdef CONFIG_DRM_EXYNOS_IPP
 491         exynos_platform_device_ipp_unregister();
 492         platform_driver_unregister(&ipp_driver);
 493 #endif
 494
 495 #ifdef CONFIG_DRM_EXYNOS_GSC
 496         platform_driver_unregister(&gsc_driver);
 497 #endif
 498
 499 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 500         platform_driver_unregister(&rotator_driver);
 501 #endif
 502
 503 #ifdef CONFIG_DRM_EXYNOS_FIMC
 504         platform_driver_unregister(&fimc_driver);
 505 #endif
 506
 507 #ifdef CONFIG_DRM_EXYNOS_G2D
 508         platform_driver_unregister(&g2d_driver);
 509 #endif
 510
 511 #ifdef CONFIG_DRM_EXYNOS_HDMI
 512         exynos_platform_device_hdmi_unregister();
 513         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 514         platform_driver_unregister(&mixer_driver);
 515         platform_driver_unregister(&hdmi_driver);
 516 #endif
 517
 518 #ifdef CONFIG_DRM_EXYNOS_VIDI
 519         platform_driver_unregister(&vidi_driver);
 520 #endif
 521
 522 #ifdef CONFIG_DRM_EXYNOS_FIMD
 523         platform_driver_unregister(&fimd_driver);
 524 #endif
 525 }
 526
 527 module_init(exynos_drm_init);
 528 module_exit(exynos_drm_exit);
 529
 530 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 531 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 532 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 533 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 534 MODULE_LICENSE("GPL");