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  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #include <drm/drmP.h>
  29 #include <drm/drm_crtc_helper.h>
  30
  31 #include <drm/exynos_drm.h>
  32
  33 #include "exynos_drm_drv.h"
  34 #include "exynos_drm_crtc.h"
  35 #include "exynos_drm_encoder.h"
  36 #include "exynos_drm_fbdev.h"
  37 #include "exynos_drm_fb.h"
  38 #include "exynos_drm_gem.h"
  39 #include "exynos_drm_plane.h"
  40 #include "exynos_drm_vidi.h"
  41 #include "exynos_drm_dmabuf.h"
  42 #include "exynos_drm_g2d.h"
  43 #include "exynos_drm_ipp.h"
  44 #include "exynos_drm_iommu.h"
  45
  46 #define DRIVER_NAME     "exynos"
  47 #define DRIVER_DESC     "Samsung SoC DRM"
  48 #define DRIVER_DATE     "20110530"
  49 #define DRIVER_MAJOR    1
  50 #define DRIVER_MINOR    0
  51
  52 #define VBLANK_OFF_DELAY        50000
  53
  54 /* platform device pointer for eynos drm device. */
  55 static struct platform_device *exynos_drm_pdev;
  56
  57 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  58 {
  59         struct exynos_drm_private *private;
  60         int ret;
  61         int nr;
  62
  63         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  64
  65         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  66         if (!private) {
  67                 DRM_ERROR("failed to allocate private\n");
  68                 return -ENOMEM;
  69         }
  70
  71         INIT_LIST_HEAD(&private->pageflip_event_list);
  72         dev->dev_private = (void *)private;
  73
  74         /*
  75          * create mapping to manage iommu table and set a pointer to iommu
  76          * mapping structure to iommu_mapping of private data.
  77          * also this iommu_mapping can be used to check if iommu is supported
  78          * or not.
  79          */
  80         ret = drm_create_iommu_mapping(dev);
  81         if (ret < 0) {
  82                 DRM_ERROR("failed to create iommu mapping.\n");
  83                 goto err_crtc;
  84         }
  85
  86         drm_mode_config_init(dev);
  87
  88         /* init kms poll for handling hpd */
  89         drm_kms_helper_poll_init(dev);
  90
  91         exynos_drm_mode_config_init(dev);
  92
  93         /*
  94          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  95          * without dependency of hardware.
  96          */
  97         for (nr = 0; nr < MAX_CRTC; nr++) {
  98                 ret = exynos_drm_crtc_create(dev, nr);
  99                 if (ret)
 100                         goto err_release_iommu_mapping;
 101         }
 102
 103         for (nr = 0; nr < MAX_PLANE; nr++) {
 104                 struct drm_plane *plane;
 105                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
 106
 107                 plane = exynos_plane_init(dev, possible_crtcs, false);
 108                 if (!plane)
 109                         goto err_release_iommu_mapping;
 110         }
 111
 112         ret = drm_vblank_init(dev, MAX_CRTC);
 113         if (ret)
 114                 goto err_release_iommu_mapping;
 115
 116         /*
 117          * probe sub drivers such as display controller and hdmi driver,
 118          * that were registered at probe() of platform driver
 119          * to the sub driver and create encoder and connector for them.
 120          */
 121         ret = exynos_drm_device_register(dev);
 122         if (ret)
 123                 goto err_vblank;
 124
 125         /* setup possible_clones. */
 126         exynos_drm_encoder_setup(dev);
 127
 128         /*
 129          * create and configure fb helper and also exynos specific
 130          * fbdev object.
 131          */
 132         ret = exynos_drm_fbdev_init(dev);
 133         if (ret) {
 134                 DRM_ERROR("failed to initialize drm fbdev\n");
 135                 goto err_drm_device;
 136         }
 137
 138         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 139
 140         return 0;
 141
 142 err_drm_device:
 143         exynos_drm_device_unregister(dev);
 144 err_vblank:
 145         drm_vblank_cleanup(dev);
 146 err_release_iommu_mapping:
 147         drm_release_iommu_mapping(dev);
 148 err_crtc:
 149         drm_mode_config_cleanup(dev);
 150         kfree(private);
 151
 152         return ret;
 153 }
 154
 155 static int exynos_drm_unload(struct drm_device *dev)
 156 {
 157         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 158
 159         exynos_drm_fbdev_fini(dev);
 160         exynos_drm_device_unregister(dev);
 161         drm_vblank_cleanup(dev);
 162         drm_kms_helper_poll_fini(dev);
 163         drm_mode_config_cleanup(dev);
 164
 165         drm_release_iommu_mapping(dev);
 166         kfree(dev->dev_private);
 167
 168         dev->dev_private = NULL;
 169
 170         return 0;
 171 }
 172
 173 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 174 {
 175         struct drm_exynos_file_private *file_priv;
 176
 177         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 178
 179         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 180         if (!file_priv)
 181                 return -ENOMEM;
 182
 183         file->driver_priv = file_priv;
 184
 185         return exynos_drm_subdrv_open(dev, file);
 186 }
 187
 188 static void exynos_drm_preclose(struct drm_device *dev,
 189                                         struct drm_file *file)
 190 {
 191         struct exynos_drm_private *private = dev->dev_private;
 192         struct drm_pending_vblank_event *e, *t;
 193         unsigned long flags;
 194
 195         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 196
 197         /* release events of current file */
 198         spin_lock_irqsave(&dev->event_lock, flags);
 199         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 200                         base.link) {
 201                 if (e->base.file_priv == file) {
 202                         list_del(&e->base.link);
 203                         e->base.destroy(&e->base);
 204                 }
 205         }
 206         spin_unlock_irqrestore(&dev->event_lock, flags);
 207
 208         exynos_drm_subdrv_close(dev, file);
 209 }
 210
 211 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 212 {
 213         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 214
 215         if (!file->driver_priv)
 216                 return;
 217
 218         kfree(file->driver_priv);
 219         file->driver_priv = NULL;
 220 }
 221
 222 static void exynos_drm_lastclose(struct drm_device *dev)
 223 {
 224         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 225
 226         exynos_drm_fbdev_restore_mode(dev);
 227 }
 228
 229 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 230         .fault = exynos_drm_gem_fault,
 231         .open = drm_gem_vm_open,
 232         .close = drm_gem_vm_close,
 233 };
 234
 235 static struct drm_ioctl_desc exynos_ioctls[] = {
 236         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 237                         DRM_UNLOCKED | DRM_AUTH),
 238         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 239                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 240                         DRM_AUTH),
 241         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 242                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 243         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 244                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 245         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 246                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 247         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 248                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 249         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 250                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 251         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 252                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 253         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 254                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 255         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 256                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 257         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 258                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 259         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 260                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 261 };
 262
 263 static const struct file_operations exynos_drm_driver_fops = {
 264         .owner          = THIS_MODULE,
 265         .open           = drm_open,
 266         .mmap           = exynos_drm_gem_mmap,
 267         .poll           = drm_poll,
 268         .read           = drm_read,
 269         .unlocked_ioctl = drm_ioctl,
 270 #ifdef CONFIG_COMPAT
 271         .compat_ioctl = drm_compat_ioctl,
 272 #endif
 273         .release        = drm_release,
 274 };
 275
 276 static struct drm_driver exynos_drm_driver = {
 277         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 278                                         DRIVER_GEM | DRIVER_PRIME,
 279         .load                   = exynos_drm_load,
 280         .unload                 = exynos_drm_unload,
 281         .open                   = exynos_drm_open,
 282         .preclose               = exynos_drm_preclose,
 283         .lastclose              = exynos_drm_lastclose,
 284         .postclose              = exynos_drm_postclose,
 285         .get_vblank_counter     = drm_vblank_count,
 286         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 287         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 288         .gem_init_object        = exynos_drm_gem_init_object,
 289         .gem_free_object        = exynos_drm_gem_free_object,
 290         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 291         .dumb_create            = exynos_drm_gem_dumb_create,
 292         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 293         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 294         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 295         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 296         .gem_prime_export       = exynos_dmabuf_prime_export,
 297         .gem_prime_import       = exynos_dmabuf_prime_import,
 298         .ioctls                 = exynos_ioctls,
 299         .fops                   = &exynos_drm_driver_fops,
 300         .name   = DRIVER_NAME,
 301         .desc   = DRIVER_DESC,
 302         .date   = DRIVER_DATE,
 303         .major  = DRIVER_MAJOR,
 304         .minor  = DRIVER_MINOR,
 305 };
 306
 307 static int exynos_drm_platform_probe(struct platform_device *pdev)
 308 {
 309         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 310
 311         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 312         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 313
 314         return drm_platform_init(&exynos_drm_driver, pdev);
 315 }
 316
 317 static int exynos_drm_platform_remove(struct platform_device *pdev)
 318 {
 319         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 320
 321         drm_platform_exit(&exynos_drm_driver, pdev);
 322
 323         return 0;
 324 }
 325
 326 static struct platform_driver exynos_drm_platform_driver = {
 327         .probe          = exynos_drm_platform_probe,
 328         .remove         = __devexit_p(exynos_drm_platform_remove),
 329         .driver         = {
 330                 .owner  = THIS_MODULE,
 331                 .name   = "exynos-drm",
 332         },
 333 };
 334
 335 static int __init exynos_drm_init(void)
 336 {
 337         int ret;
 338
 339         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 340
 341 #ifdef CONFIG_DRM_EXYNOS_FIMD
 342         ret = platform_driver_register(&fimd_driver);
 343         if (ret < 0)
 344                 goto out_fimd;
 345 #endif
 346
 347 #ifdef CONFIG_DRM_EXYNOS_HDMI
 348         ret = platform_driver_register(&hdmi_driver);
 349         if (ret < 0)
 350                 goto out_hdmi;
 351         ret = platform_driver_register(&mixer_driver);
 352         if (ret < 0)
 353                 goto out_mixer;
 354         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 355         if (ret < 0)
 356                 goto out_common_hdmi;
 357
 358         ret = exynos_platform_device_hdmi_register();
 359         if (ret < 0)
 360                 goto out_common_hdmi_dev;
 361 #endif
 362
 363 #ifdef CONFIG_DRM_EXYNOS_VIDI
 364         ret = platform_driver_register(&vidi_driver);
 365         if (ret < 0)
 366                 goto out_vidi;
 367 #endif
 368
 369 #ifdef CONFIG_DRM_EXYNOS_G2D
 370         ret = platform_driver_register(&g2d_driver);
 371         if (ret < 0)
 372                 goto out_g2d;
 373 #endif
 374
 375 #ifdef CONFIG_DRM_EXYNOS_FIMC
 376         ret = platform_driver_register(&fimc_driver);
 377         if (ret < 0)
 378                 goto out_fimc;
 379 #endif
 380
 381 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 382         ret = platform_driver_register(&rotator_driver);
 383         if (ret < 0)
 384                 goto out_rotator;
 385 #endif
 386
 387 #ifdef CONFIG_DRM_EXYNOS_GSC
 388         ret = platform_driver_register(&gsc_driver);
 389         if (ret < 0)
 390                 goto out_gsc;
 391 #endif
 392
 393 #ifdef CONFIG_DRM_EXYNOS_IPP
 394         ret = platform_driver_register(&ipp_driver);
 395         if (ret < 0)
 396                 goto out_ipp;
 397 #endif
 398
 399         ret = platform_driver_register(&exynos_drm_platform_driver);
 400         if (ret < 0)
 401                 goto out_drm;
 402
 403         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 404                                 NULL, 0);
 405         if (IS_ERR_OR_NULL(exynos_drm_pdev)) {
 406                 ret = PTR_ERR(exynos_drm_pdev);
 407                 goto out;
 408         }
 409
 410         return 0;
 411
 412 out:
 413         platform_driver_unregister(&exynos_drm_platform_driver);
 414
 415 out_drm:
 416 #ifdef CONFIG_DRM_EXYNOS_IPP
 417         platform_driver_unregister(&ipp_driver);
 418 out_ipp:
 419 #endif
 420
 421 #ifdef CONFIG_DRM_EXYNOS_GSC
 422         platform_driver_unregister(&gsc_driver);
 423 out_gsc:
 424 #endif
 425
 426 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 427         platform_driver_unregister(&rotator_driver);
 428 out_rotator:
 429 #endif
 430
 431 #ifdef CONFIG_DRM_EXYNOS_FIMC
 432         platform_driver_unregister(&fimc_driver);
 433 out_fimc:
 434 #endif
 435
 436 #ifdef CONFIG_DRM_EXYNOS_G2D
 437         platform_driver_unregister(&g2d_driver);
 438 out_g2d:
 439 #endif
 440
 441 #ifdef CONFIG_DRM_EXYNOS_VIDI
 442         platform_driver_unregister(&vidi_driver);
 443 out_vidi:
 444 #endif
 445
 446 #ifdef CONFIG_DRM_EXYNOS_HDMI
 447         exynos_platform_device_hdmi_unregister();
 448 out_common_hdmi_dev:
 449         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 450 out_common_hdmi:
 451         platform_driver_unregister(&mixer_driver);
 452 out_mixer:
 453         platform_driver_unregister(&hdmi_driver);
 454 out_hdmi:
 455 #endif
 456
 457 #ifdef CONFIG_DRM_EXYNOS_FIMD
 458         platform_driver_unregister(&fimd_driver);
 459 out_fimd:
 460 #endif
 461         return ret;
 462 }
 463
 464 static void __exit exynos_drm_exit(void)
 465 {
 466         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 467
 468         platform_device_unregister(exynos_drm_pdev);
 469
 470         platform_driver_unregister(&exynos_drm_platform_driver);
 471
 472 #ifdef CONFIG_DRM_EXYNOS_IPP
 473         platform_driver_unregister(&ipp_driver);
 474 #endif
 475
 476 #ifdef CONFIG_DRM_EXYNOS_GSC
 477         platform_driver_unregister(&gsc_driver);
 478 #endif
 479
 480 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 481         platform_driver_unregister(&rotator_driver);
 482 #endif
 483
 484 #ifdef CONFIG_DRM_EXYNOS_FIMC
 485         platform_driver_unregister(&fimc_driver);
 486 #endif
 487
 488 #ifdef CONFIG_DRM_EXYNOS_G2D
 489         platform_driver_unregister(&g2d_driver);
 490 #endif
 491
 492 #ifdef CONFIG_DRM_EXYNOS_HDMI
 493         exynos_platform_device_hdmi_unregister();
 494         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 495         platform_driver_unregister(&mixer_driver);
 496         platform_driver_unregister(&hdmi_driver);
 497 #endif
 498
 499 #ifdef CONFIG_DRM_EXYNOS_VIDI
 500         platform_driver_unregister(&vidi_driver);
 501 #endif
 502
 503 #ifdef CONFIG_DRM_EXYNOS_FIMD
 504         platform_driver_unregister(&fimd_driver);
 505 #endif
 506 }
 507
 508 module_init(exynos_drm_init);
 509 module_exit(exynos_drm_exit);
 510
 511 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 512 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 513 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 514 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 515 MODULE_LICENSE("GPL");