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 <drm/exynos_drm.h>
  18
  19 #include "exynos_drm_drv.h"
  20 #include "exynos_drm_crtc.h"
  21 #include "exynos_drm_encoder.h"
  22 #include "exynos_drm_fbdev.h"
  23 #include "exynos_drm_fb.h"
  24 #include "exynos_drm_gem.h"
  25 #include "exynos_drm_plane.h"
  26 #include "exynos_drm_vidi.h"
  27 #include "exynos_drm_dmabuf.h"
  28 #include "exynos_drm_g2d.h"
  29 #include "exynos_drm_ipp.h"
  30 #include "exynos_drm_iommu.h"
  31
  32 #define DRIVER_NAME     "exynos"
  33 #define DRIVER_DESC     "Samsung SoC DRM"
  34 #define DRIVER_DATE     "20110530"
  35 #define DRIVER_MAJOR    1
  36 #define DRIVER_MINOR    0
  37
  38 #define VBLANK_OFF_DELAY        50000
  39
  40 /* platform device pointer for eynos drm device. */
  41 static struct platform_device *exynos_drm_pdev;
  42
  43 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  44 {
  45         struct exynos_drm_private *private;
  46         int ret;
  47         int nr;
  48
  49         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  50
  51         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  52         if (!private) {
  53                 DRM_ERROR("failed to allocate private\n");
  54                 return -ENOMEM;
  55         }
  56
  57         INIT_LIST_HEAD(&private->pageflip_event_list);
  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_crtc;
  70         }
  71
  72         drm_mode_config_init(dev);
  73
  74         /* init kms poll for handling hpd */
  75         drm_kms_helper_poll_init(dev);
  76
  77         exynos_drm_mode_config_init(dev);
  78
  79         /*
  80          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  81          * without dependency of hardware.
  82          */
  83         for (nr = 0; nr < MAX_CRTC; nr++) {
  84                 ret = exynos_drm_crtc_create(dev, nr);
  85                 if (ret)
  86                         goto err_release_iommu_mapping;
  87         }
  88
  89         for (nr = 0; nr < MAX_PLANE; nr++) {
  90                 struct drm_plane *plane;
  91                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
  92
  93                 plane = exynos_plane_init(dev, possible_crtcs, false);
  94                 if (!plane)
  95                         goto err_release_iommu_mapping;
  96         }
  97
  98         ret = drm_vblank_init(dev, MAX_CRTC);
  99         if (ret)
 100                 goto err_release_iommu_mapping;
 101
 102         /*
 103          * probe sub drivers such as display controller and hdmi driver,
 104          * that were registered at probe() of platform driver
 105          * to the sub driver and create encoder and connector for them.
 106          */
 107         ret = exynos_drm_device_register(dev);
 108         if (ret)
 109                 goto err_vblank;
 110
 111         /* setup possible_clones. */
 112         exynos_drm_encoder_setup(dev);
 113
 114         /*
 115          * create and configure fb helper and also exynos specific
 116          * fbdev object.
 117          */
 118         ret = exynos_drm_fbdev_init(dev);
 119         if (ret) {
 120                 DRM_ERROR("failed to initialize drm fbdev\n");
 121                 goto err_drm_device;
 122         }
 123
 124         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 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         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 144
 145         exynos_drm_fbdev_fini(dev);
 146         exynos_drm_device_unregister(dev);
 147         drm_vblank_cleanup(dev);
 148         drm_kms_helper_poll_fini(dev);
 149         drm_mode_config_cleanup(dev);
 150
 151         drm_release_iommu_mapping(dev);
 152         kfree(dev->dev_private);
 153
 154         dev->dev_private = NULL;
 155
 156         return 0;
 157 }
 158
 159 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 160 {
 161         struct drm_exynos_file_private *file_priv;
 162
 163         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 164
 165         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 166         if (!file_priv)
 167                 return -ENOMEM;
 168
 169         file->driver_priv = file_priv;
 170
 171         return exynos_drm_subdrv_open(dev, file);
 172 }
 173
 174 static void exynos_drm_preclose(struct drm_device *dev,
 175                                         struct drm_file *file)
 176 {
 177         struct exynos_drm_private *private = dev->dev_private;
 178         struct drm_pending_vblank_event *e, *t;
 179         unsigned long flags;
 180
 181         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 182
 183         /* release events of current file */
 184         spin_lock_irqsave(&dev->event_lock, flags);
 185         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 186                         base.link) {
 187                 if (e->base.file_priv == file) {
 188                         list_del(&e->base.link);
 189                         e->base.destroy(&e->base);
 190                 }
 191         }
 192         spin_unlock_irqrestore(&dev->event_lock, flags);
 193
 194         exynos_drm_subdrv_close(dev, file);
 195 }
 196
 197 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 198 {
 199         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 200
 201         if (!file->driver_priv)
 202                 return;
 203
 204         kfree(file->driver_priv);
 205         file->driver_priv = NULL;
 206 }
 207
 208 static void exynos_drm_lastclose(struct drm_device *dev)
 209 {
 210         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 211
 212         exynos_drm_fbdev_restore_mode(dev);
 213 }
 214
 215 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 216         .fault = exynos_drm_gem_fault,
 217         .open = drm_gem_vm_open,
 218         .close = drm_gem_vm_close,
 219 };
 220
 221 static struct drm_ioctl_desc exynos_ioctls[] = {
 222         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 223                         DRM_UNLOCKED | DRM_AUTH),
 224         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 225                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 226                         DRM_AUTH),
 227         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 228                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 229         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 230                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 231         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 232                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 233         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 234                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 235         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 236                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 237         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 238                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 239         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 240                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 241         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 242                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 243         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 244                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 245         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 246                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 247 };
 248
 249 static const struct file_operations exynos_drm_driver_fops = {
 250         .owner          = THIS_MODULE,
 251         .open           = drm_open,
 252         .mmap           = exynos_drm_gem_mmap,
 253         .poll           = drm_poll,
 254         .read           = drm_read,
 255         .unlocked_ioctl = drm_ioctl,
 256 #ifdef CONFIG_COMPAT
 257         .compat_ioctl = drm_compat_ioctl,
 258 #endif
 259         .release        = drm_release,
 260 };
 261
 262 static struct drm_driver exynos_drm_driver = {
 263         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 264                                         DRIVER_GEM | DRIVER_PRIME,
 265         .load                   = exynos_drm_load,
 266         .unload                 = exynos_drm_unload,
 267         .open                   = exynos_drm_open,
 268         .preclose               = exynos_drm_preclose,
 269         .lastclose              = exynos_drm_lastclose,
 270         .postclose              = exynos_drm_postclose,
 271         .get_vblank_counter     = drm_vblank_count,
 272         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 273         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 274         .gem_init_object        = exynos_drm_gem_init_object,
 275         .gem_free_object        = exynos_drm_gem_free_object,
 276         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 277         .dumb_create            = exynos_drm_gem_dumb_create,
 278         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 279         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 280         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 281         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 282         .gem_prime_export       = exynos_dmabuf_prime_export,
 283         .gem_prime_import       = exynos_dmabuf_prime_import,
 284         .ioctls                 = exynos_ioctls,
 285         .fops                   = &exynos_drm_driver_fops,
 286         .name   = DRIVER_NAME,
 287         .desc   = DRIVER_DESC,
 288         .date   = DRIVER_DATE,
 289         .major  = DRIVER_MAJOR,
 290         .minor  = DRIVER_MINOR,
 291 };
 292
 293 static int exynos_drm_platform_probe(struct platform_device *pdev)
 294 {
 295         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 296
 297         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 298         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 299
 300         return drm_platform_init(&exynos_drm_driver, pdev);
 301 }
 302
 303 static int exynos_drm_platform_remove(struct platform_device *pdev)
 304 {
 305         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 306
 307         drm_platform_exit(&exynos_drm_driver, pdev);
 308
 309         return 0;
 310 }
 311
 312 static struct platform_driver exynos_drm_platform_driver = {
 313         .probe          = exynos_drm_platform_probe,
 314         .remove         = exynos_drm_platform_remove,
 315         .driver         = {
 316                 .owner  = THIS_MODULE,
 317                 .name   = "exynos-drm",
 318         },
 319 };
 320
 321 static int __init exynos_drm_init(void)
 322 {
 323         int ret;
 324
 325         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 326
 327 #ifdef CONFIG_DRM_EXYNOS_FIMD
 328         ret = platform_driver_register(&fimd_driver);
 329         if (ret < 0)
 330                 goto out_fimd;
 331 #endif
 332
 333 #ifdef CONFIG_DRM_EXYNOS_HDMI
 334         ret = platform_driver_register(&hdmi_driver);
 335         if (ret < 0)
 336                 goto out_hdmi;
 337         ret = platform_driver_register(&mixer_driver);
 338         if (ret < 0)
 339                 goto out_mixer;
 340         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 341         if (ret < 0)
 342                 goto out_common_hdmi;
 343
 344         ret = exynos_platform_device_hdmi_register();
 345         if (ret < 0)
 346                 goto out_common_hdmi_dev;
 347 #endif
 348
 349 #ifdef CONFIG_DRM_EXYNOS_VIDI
 350         ret = platform_driver_register(&vidi_driver);
 351         if (ret < 0)
 352                 goto out_vidi;
 353 #endif
 354
 355 #ifdef CONFIG_DRM_EXYNOS_G2D
 356         ret = platform_driver_register(&g2d_driver);
 357         if (ret < 0)
 358                 goto out_g2d;
 359 #endif
 360
 361 #ifdef CONFIG_DRM_EXYNOS_FIMC
 362         ret = platform_driver_register(&fimc_driver);
 363         if (ret < 0)
 364                 goto out_fimc;
 365 #endif
 366
 367 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 368         ret = platform_driver_register(&rotator_driver);
 369         if (ret < 0)
 370                 goto out_rotator;
 371 #endif
 372
 373 #ifdef CONFIG_DRM_EXYNOS_GSC
 374         ret = platform_driver_register(&gsc_driver);
 375         if (ret < 0)
 376                 goto out_gsc;
 377 #endif
 378
 379 #ifdef CONFIG_DRM_EXYNOS_IPP
 380         ret = platform_driver_register(&ipp_driver);
 381         if (ret < 0)
 382                 goto out_ipp;
 383 #endif
 384
 385         ret = platform_driver_register(&exynos_drm_platform_driver);
 386         if (ret < 0)
 387                 goto out_drm;
 388
 389         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 390                                 NULL, 0);
 391         if (IS_ERR_OR_NULL(exynos_drm_pdev)) {
 392                 ret = PTR_ERR(exynos_drm_pdev);
 393                 goto out;
 394         }
 395
 396         return 0;
 397
 398 out:
 399         platform_driver_unregister(&exynos_drm_platform_driver);
 400
 401 out_drm:
 402 #ifdef CONFIG_DRM_EXYNOS_IPP
 403         platform_driver_unregister(&ipp_driver);
 404 out_ipp:
 405 #endif
 406
 407 #ifdef CONFIG_DRM_EXYNOS_GSC
 408         platform_driver_unregister(&gsc_driver);
 409 out_gsc:
 410 #endif
 411
 412 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 413         platform_driver_unregister(&rotator_driver);
 414 out_rotator:
 415 #endif
 416
 417 #ifdef CONFIG_DRM_EXYNOS_FIMC
 418         platform_driver_unregister(&fimc_driver);
 419 out_fimc:
 420 #endif
 421
 422 #ifdef CONFIG_DRM_EXYNOS_G2D
 423         platform_driver_unregister(&g2d_driver);
 424 out_g2d:
 425 #endif
 426
 427 #ifdef CONFIG_DRM_EXYNOS_VIDI
 428         platform_driver_unregister(&vidi_driver);
 429 out_vidi:
 430 #endif
 431
 432 #ifdef CONFIG_DRM_EXYNOS_HDMI
 433         exynos_platform_device_hdmi_unregister();
 434 out_common_hdmi_dev:
 435         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 436 out_common_hdmi:
 437         platform_driver_unregister(&mixer_driver);
 438 out_mixer:
 439         platform_driver_unregister(&hdmi_driver);
 440 out_hdmi:
 441 #endif
 442
 443 #ifdef CONFIG_DRM_EXYNOS_FIMD
 444         platform_driver_unregister(&fimd_driver);
 445 out_fimd:
 446 #endif
 447         return ret;
 448 }
 449
 450 static void __exit exynos_drm_exit(void)
 451 {
 452         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 453
 454         platform_device_unregister(exynos_drm_pdev);
 455
 456         platform_driver_unregister(&exynos_drm_platform_driver);
 457
 458 #ifdef CONFIG_DRM_EXYNOS_IPP
 459         platform_driver_unregister(&ipp_driver);
 460 #endif
 461
 462 #ifdef CONFIG_DRM_EXYNOS_GSC
 463         platform_driver_unregister(&gsc_driver);
 464 #endif
 465
 466 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 467         platform_driver_unregister(&rotator_driver);
 468 #endif
 469
 470 #ifdef CONFIG_DRM_EXYNOS_FIMC
 471         platform_driver_unregister(&fimc_driver);
 472 #endif
 473
 474 #ifdef CONFIG_DRM_EXYNOS_G2D
 475         platform_driver_unregister(&g2d_driver);
 476 #endif
 477
 478 #ifdef CONFIG_DRM_EXYNOS_HDMI
 479         exynos_platform_device_hdmi_unregister();
 480         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 481         platform_driver_unregister(&mixer_driver);
 482         platform_driver_unregister(&hdmi_driver);
 483 #endif
 484
 485 #ifdef CONFIG_DRM_EXYNOS_VIDI
 486         platform_driver_unregister(&vidi_driver);
 487 #endif
 488
 489 #ifdef CONFIG_DRM_EXYNOS_FIMD
 490         platform_driver_unregister(&fimd_driver);
 491 #endif
 492 }
 493
 494 module_init(exynos_drm_init);
 495 module_exit(exynos_drm_exit);
 496
 497 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 498 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 499 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 500 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 501 MODULE_LICENSE("GPL");