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         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  50         if (!private) {
  51                 DRM_ERROR("failed to allocate private\n");
  52                 return -ENOMEM;
  53         }
  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         return 0;
 125
 126 err_drm_device:
 127         exynos_drm_device_unregister(dev);
 128 err_vblank:
 129         drm_vblank_cleanup(dev);
 130 err_release_iommu_mapping:
 131         drm_release_iommu_mapping(dev);
 132 err_crtc:
 133         drm_mode_config_cleanup(dev);
 134         kfree(private);
 135
 136         return ret;
 137 }
 138
 139 static int exynos_drm_unload(struct drm_device *dev)
 140 {
 141         exynos_drm_fbdev_fini(dev);
 142         exynos_drm_device_unregister(dev);
 143         drm_vblank_cleanup(dev);
 144         drm_kms_helper_poll_fini(dev);
 145         drm_mode_config_cleanup(dev);
 146
 147         drm_release_iommu_mapping(dev);
 148         kfree(dev->dev_private);
 149
 150         dev->dev_private = NULL;
 151
 152         return 0;
 153 }
 154
 155 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 156 {
 157         struct drm_exynos_file_private *file_priv;
 158
 159         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 160         if (!file_priv)
 161                 return -ENOMEM;
 162
 163         file->driver_priv = file_priv;
 164
 165         return exynos_drm_subdrv_open(dev, file);
 166 }
 167
 168 static void exynos_drm_preclose(struct drm_device *dev,
 169                                         struct drm_file *file)
 170 {
 171         struct exynos_drm_private *private = dev->dev_private;
 172         struct drm_pending_vblank_event *e, *t;
 173         unsigned long flags;
 174
 175         /* release events of current file */
 176         spin_lock_irqsave(&dev->event_lock, flags);
 177         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 178                         base.link) {
 179                 if (e->base.file_priv == file) {
 180                         list_del(&e->base.link);
 181                         e->base.destroy(&e->base);
 182                 }
 183         }
 184         spin_unlock_irqrestore(&dev->event_lock, flags);
 185
 186         exynos_drm_subdrv_close(dev, file);
 187 }
 188
 189 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 190 {
 191         if (!file->driver_priv)
 192                 return;
 193
 194         kfree(file->driver_priv);
 195         file->driver_priv = NULL;
 196 }
 197
 198 static void exynos_drm_lastclose(struct drm_device *dev)
 199 {
 200         exynos_drm_fbdev_restore_mode(dev);
 201 }
 202
 203 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 204         .fault = exynos_drm_gem_fault,
 205         .open = drm_gem_vm_open,
 206         .close = drm_gem_vm_close,
 207 };
 208
 209 static struct drm_ioctl_desc exynos_ioctls[] = {
 210         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 211                         DRM_UNLOCKED | DRM_AUTH),
 212         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 213                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 214                         DRM_AUTH),
 215         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 216                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 217         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 218                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 219         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 220                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 221         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 222                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 223         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 224                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 225         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 226                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 227         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 228                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 229         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 230                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 231         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 232                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 233         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 234                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 235 };
 236
 237 static const struct file_operations exynos_drm_driver_fops = {
 238         .owner          = THIS_MODULE,
 239         .open           = drm_open,
 240         .mmap           = exynos_drm_gem_mmap,
 241         .poll           = drm_poll,
 242         .read           = drm_read,
 243         .unlocked_ioctl = drm_ioctl,
 244 #ifdef CONFIG_COMPAT
 245         .compat_ioctl = drm_compat_ioctl,
 246 #endif
 247         .release        = drm_release,
 248 };
 249
 250 static struct drm_driver exynos_drm_driver = {
 251         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 252                                         DRIVER_GEM | DRIVER_PRIME,
 253         .load                   = exynos_drm_load,
 254         .unload                 = exynos_drm_unload,
 255         .open                   = exynos_drm_open,
 256         .preclose               = exynos_drm_preclose,
 257         .lastclose              = exynos_drm_lastclose,
 258         .postclose              = exynos_drm_postclose,
 259         .get_vblank_counter     = drm_vblank_count,
 260         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 261         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 262         .gem_init_object        = exynos_drm_gem_init_object,
 263         .gem_free_object        = exynos_drm_gem_free_object,
 264         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 265         .dumb_create            = exynos_drm_gem_dumb_create,
 266         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 267         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 268         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 269         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 270         .gem_prime_export       = exynos_dmabuf_prime_export,
 271         .gem_prime_import       = exynos_dmabuf_prime_import,
 272         .ioctls                 = exynos_ioctls,
 273         .fops                   = &exynos_drm_driver_fops,
 274         .name   = DRIVER_NAME,
 275         .desc   = DRIVER_DESC,
 276         .date   = DRIVER_DATE,
 277         .major  = DRIVER_MAJOR,
 278         .minor  = DRIVER_MINOR,
 279 };
 280
 281 static int exynos_drm_platform_probe(struct platform_device *pdev)
 282 {
 283         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 284         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 285
 286         return drm_platform_init(&exynos_drm_driver, pdev);
 287 }
 288
 289 static int exynos_drm_platform_remove(struct platform_device *pdev)
 290 {
 291         drm_platform_exit(&exynos_drm_driver, pdev);
 292
 293         return 0;
 294 }
 295
 296 static struct platform_driver exynos_drm_platform_driver = {
 297         .probe          = exynos_drm_platform_probe,
 298         .remove         = exynos_drm_platform_remove,
 299         .driver         = {
 300                 .owner  = THIS_MODULE,
 301                 .name   = "exynos-drm",
 302         },
 303 };
 304
 305 static int __init exynos_drm_init(void)
 306 {
 307         int ret;
 308
 309 #ifdef CONFIG_DRM_EXYNOS_FIMD
 310         ret = platform_driver_register(&fimd_driver);
 311         if (ret < 0)
 312                 goto out_fimd;
 313 #endif
 314
 315 #ifdef CONFIG_DRM_EXYNOS_HDMI
 316         ret = platform_driver_register(&hdmi_driver);
 317         if (ret < 0)
 318                 goto out_hdmi;
 319         ret = platform_driver_register(&mixer_driver);
 320         if (ret < 0)
 321                 goto out_mixer;
 322         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 323         if (ret < 0)
 324                 goto out_common_hdmi;
 325
 326         ret = exynos_platform_device_hdmi_register();
 327         if (ret < 0)
 328                 goto out_common_hdmi_dev;
 329 #endif
 330
 331 #ifdef CONFIG_DRM_EXYNOS_VIDI
 332         ret = platform_driver_register(&vidi_driver);
 333         if (ret < 0)
 334                 goto out_vidi;
 335 #endif
 336
 337 #ifdef CONFIG_DRM_EXYNOS_G2D
 338         ret = platform_driver_register(&g2d_driver);
 339         if (ret < 0)
 340                 goto out_g2d;
 341 #endif
 342
 343 #ifdef CONFIG_DRM_EXYNOS_FIMC
 344         ret = platform_driver_register(&fimc_driver);
 345         if (ret < 0)
 346                 goto out_fimc;
 347 #endif
 348
 349 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 350         ret = platform_driver_register(&rotator_driver);
 351         if (ret < 0)
 352                 goto out_rotator;
 353 #endif
 354
 355 #ifdef CONFIG_DRM_EXYNOS_GSC
 356         ret = platform_driver_register(&gsc_driver);
 357         if (ret < 0)
 358                 goto out_gsc;
 359 #endif
 360
 361 #ifdef CONFIG_DRM_EXYNOS_IPP
 362         ret = platform_driver_register(&ipp_driver);
 363         if (ret < 0)
 364                 goto out_ipp;
 365
 366         ret = exynos_platform_device_ipp_register();
 367         if (ret < 0)
 368                 goto out_ipp_dev;
 369 #endif
 370
 371         ret = platform_driver_register(&exynos_drm_platform_driver);
 372         if (ret < 0)
 373                 goto out_drm;
 374
 375         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 376                                 NULL, 0);
 377         if (IS_ERR(exynos_drm_pdev)) {
 378                 ret = PTR_ERR(exynos_drm_pdev);
 379                 goto out;
 380         }
 381
 382         return 0;
 383
 384 out:
 385         platform_driver_unregister(&exynos_drm_platform_driver);
 386
 387 out_drm:
 388 #ifdef CONFIG_DRM_EXYNOS_IPP
 389         exynos_platform_device_ipp_unregister();
 390 out_ipp_dev:
 391         platform_driver_unregister(&ipp_driver);
 392 out_ipp:
 393 #endif
 394
 395 #ifdef CONFIG_DRM_EXYNOS_GSC
 396         platform_driver_unregister(&gsc_driver);
 397 out_gsc:
 398 #endif
 399
 400 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 401         platform_driver_unregister(&rotator_driver);
 402 out_rotator:
 403 #endif
 404
 405 #ifdef CONFIG_DRM_EXYNOS_FIMC
 406         platform_driver_unregister(&fimc_driver);
 407 out_fimc:
 408 #endif
 409
 410 #ifdef CONFIG_DRM_EXYNOS_G2D
 411         platform_driver_unregister(&g2d_driver);
 412 out_g2d:
 413 #endif
 414
 415 #ifdef CONFIG_DRM_EXYNOS_VIDI
 416         platform_driver_unregister(&vidi_driver);
 417 out_vidi:
 418 #endif
 419
 420 #ifdef CONFIG_DRM_EXYNOS_HDMI
 421         exynos_platform_device_hdmi_unregister();
 422 out_common_hdmi_dev:
 423         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 424 out_common_hdmi:
 425         platform_driver_unregister(&mixer_driver);
 426 out_mixer:
 427         platform_driver_unregister(&hdmi_driver);
 428 out_hdmi:
 429 #endif
 430
 431 #ifdef CONFIG_DRM_EXYNOS_FIMD
 432         platform_driver_unregister(&fimd_driver);
 433 out_fimd:
 434 #endif
 435         return ret;
 436 }
 437
 438 static void __exit exynos_drm_exit(void)
 439 {
 440         platform_device_unregister(exynos_drm_pdev);
 441
 442         platform_driver_unregister(&exynos_drm_platform_driver);
 443
 444 #ifdef CONFIG_DRM_EXYNOS_IPP
 445         exynos_platform_device_ipp_unregister();
 446         platform_driver_unregister(&ipp_driver);
 447 #endif
 448
 449 #ifdef CONFIG_DRM_EXYNOS_GSC
 450         platform_driver_unregister(&gsc_driver);
 451 #endif
 452
 453 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 454         platform_driver_unregister(&rotator_driver);
 455 #endif
 456
 457 #ifdef CONFIG_DRM_EXYNOS_FIMC
 458         platform_driver_unregister(&fimc_driver);
 459 #endif
 460
 461 #ifdef CONFIG_DRM_EXYNOS_G2D
 462         platform_driver_unregister(&g2d_driver);
 463 #endif
 464
 465 #ifdef CONFIG_DRM_EXYNOS_HDMI
 466         exynos_platform_device_hdmi_unregister();
 467         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 468         platform_driver_unregister(&mixer_driver);
 469         platform_driver_unregister(&hdmi_driver);
 470 #endif
 471
 472 #ifdef CONFIG_DRM_EXYNOS_VIDI
 473         platform_driver_unregister(&vidi_driver);
 474 #endif
 475
 476 #ifdef CONFIG_DRM_EXYNOS_FIMD
 477         platform_driver_unregister(&fimd_driver);
 478 #endif
 479 }
 480
 481 module_init(exynos_drm_init);
 482 module_exit(exynos_drm_exit);
 483
 484 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 485 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 486 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 487 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 488 MODULE_LICENSE("GPL");