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                 return -ENOMEM;
  52
  53         INIT_LIST_HEAD(&private->pageflip_event_list);
  54         dev->dev_private = (void *)private;
  55
  56         /*
  57          * create mapping to manage iommu table and set a pointer to iommu
  58          * mapping structure to iommu_mapping of private data.
  59          * also this iommu_mapping can be used to check if iommu is supported
  60          * or not.
  61          */
  62         ret = drm_create_iommu_mapping(dev);
  63         if (ret < 0) {
  64                 DRM_ERROR("failed to create iommu mapping.\n");
  65                 goto err_crtc;
  66         }
  67
  68         drm_mode_config_init(dev);
  69
  70         /* init kms poll for handling hpd */
  71         drm_kms_helper_poll_init(dev);
  72
  73         exynos_drm_mode_config_init(dev);
  74
  75         /*
  76          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  77          * without dependency of hardware.
  78          */
  79         for (nr = 0; nr < MAX_CRTC; nr++) {
  80                 ret = exynos_drm_crtc_create(dev, nr);
  81                 if (ret)
  82                         goto err_release_iommu_mapping;
  83         }
  84
  85         for (nr = 0; nr < MAX_PLANE; nr++) {
  86                 struct drm_plane *plane;
  87                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
  88
  89                 plane = exynos_plane_init(dev, possible_crtcs, false);
  90                 if (!plane)
  91                         goto err_release_iommu_mapping;
  92         }
  93
  94         ret = drm_vblank_init(dev, MAX_CRTC);
  95         if (ret)
  96                 goto err_release_iommu_mapping;
  97
  98         /*
  99          * probe sub drivers such as display controller and hdmi driver,
 100          * that were registered at probe() of platform driver
 101          * to the sub driver and create encoder and connector for them.
 102          */
 103         ret = exynos_drm_device_register(dev);
 104         if (ret)
 105                 goto err_vblank;
 106
 107         /* setup possible_clones. */
 108         exynos_drm_encoder_setup(dev);
 109
 110         /*
 111          * create and configure fb helper and also exynos specific
 112          * fbdev object.
 113          */
 114         ret = exynos_drm_fbdev_init(dev);
 115         if (ret) {
 116                 DRM_ERROR("failed to initialize drm fbdev\n");
 117                 goto err_drm_device;
 118         }
 119
 120         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 121
 122         return 0;
 123
 124 err_drm_device:
 125         exynos_drm_device_unregister(dev);
 126 err_vblank:
 127         drm_vblank_cleanup(dev);
 128 err_release_iommu_mapping:
 129         drm_release_iommu_mapping(dev);
 130 err_crtc:
 131         drm_mode_config_cleanup(dev);
 132         kfree(private);
 133
 134         return ret;
 135 }
 136
 137 static int exynos_drm_unload(struct drm_device *dev)
 138 {
 139         exynos_drm_fbdev_fini(dev);
 140         exynos_drm_device_unregister(dev);
 141         drm_vblank_cleanup(dev);
 142         drm_kms_helper_poll_fini(dev);
 143         drm_mode_config_cleanup(dev);
 144
 145         drm_release_iommu_mapping(dev);
 146         kfree(dev->dev_private);
 147
 148         dev->dev_private = NULL;
 149
 150         return 0;
 151 }
 152
 153 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 154 {
 155         struct drm_exynos_file_private *file_priv;
 156         int ret;
 157
 158         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 159         if (!file_priv)
 160                 return -ENOMEM;
 161
 162         file->driver_priv = file_priv;
 163
 164         ret = exynos_drm_subdrv_open(dev, file);
 165         if (ret) {
 166                 kfree(file_priv);
 167                 file->driver_priv = NULL;
 168         }
 169
 170         return ret;
 171 }
 172
 173 static void exynos_drm_preclose(struct drm_device *dev,
 174                                         struct drm_file *file)
 175 {
 176         struct exynos_drm_private *private = dev->dev_private;
 177         struct drm_pending_vblank_event *e, *t;
 178         unsigned long flags;
 179
 180         /* release events of current file */
 181         spin_lock_irqsave(&dev->event_lock, flags);
 182         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 183                         base.link) {
 184                 if (e->base.file_priv == file) {
 185                         list_del(&e->base.link);
 186                         e->base.destroy(&e->base);
 187                 }
 188         }
 189         spin_unlock_irqrestore(&dev->event_lock, flags);
 190
 191         exynos_drm_subdrv_close(dev, file);
 192 }
 193
 194 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 195 {
 196         if (!file->driver_priv)
 197                 return;
 198
 199         kfree(file->driver_priv);
 200         file->driver_priv = NULL;
 201 }
 202
 203 static void exynos_drm_lastclose(struct drm_device *dev)
 204 {
 205         exynos_drm_fbdev_restore_mode(dev);
 206 }
 207
 208 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 209         .fault = exynos_drm_gem_fault,
 210         .open = drm_gem_vm_open,
 211         .close = drm_gem_vm_close,
 212 };
 213
 214 static const struct drm_ioctl_desc exynos_ioctls[] = {
 215         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 216                         DRM_UNLOCKED | DRM_AUTH),
 217         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 218                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 219                         DRM_AUTH),
 220         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 221                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 222         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 223                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 224         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 225                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 226         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 227                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 228         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 229                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 230         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 231                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 232         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 233                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 234         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 235                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 236         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 237                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 238         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 239                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 240 };
 241
 242 static const struct file_operations exynos_drm_driver_fops = {
 243         .owner          = THIS_MODULE,
 244         .open           = drm_open,
 245         .mmap           = exynos_drm_gem_mmap,
 246         .poll           = drm_poll,
 247         .read           = drm_read,
 248         .unlocked_ioctl = drm_ioctl,
 249 #ifdef CONFIG_COMPAT
 250         .compat_ioctl = drm_compat_ioctl,
 251 #endif
 252         .release        = drm_release,
 253 };
 254
 255 static struct drm_driver exynos_drm_driver = {
 256         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 257                                         DRIVER_GEM | DRIVER_PRIME,
 258         .load                   = exynos_drm_load,
 259         .unload                 = exynos_drm_unload,
 260         .open                   = exynos_drm_open,
 261         .preclose               = exynos_drm_preclose,
 262         .lastclose              = exynos_drm_lastclose,
 263         .postclose              = exynos_drm_postclose,
 264         .get_vblank_counter     = drm_vblank_count,
 265         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 266         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 267         .gem_free_object        = exynos_drm_gem_free_object,
 268         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 269         .dumb_create            = exynos_drm_gem_dumb_create,
 270         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 271         .dumb_destroy           = drm_gem_dumb_destroy,
 272         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 273         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 274         .gem_prime_export       = exynos_dmabuf_prime_export,
 275         .gem_prime_import       = exynos_dmabuf_prime_import,
 276         .ioctls                 = exynos_ioctls,
 277         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 278         .fops                   = &exynos_drm_driver_fops,
 279         .name   = DRIVER_NAME,
 280         .desc   = DRIVER_DESC,
 281         .date   = DRIVER_DATE,
 282         .major  = DRIVER_MAJOR,
 283         .minor  = DRIVER_MINOR,
 284 };
 285
 286 static int exynos_drm_platform_probe(struct platform_device *pdev)
 287 {
 288         int ret;
 289
 290         ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 291         if (ret)
 292                 return ret;
 293
 294         return drm_platform_init(&exynos_drm_driver, pdev);
 295 }
 296
 297 static int exynos_drm_platform_remove(struct platform_device *pdev)
 298 {
 299         drm_platform_exit(&exynos_drm_driver, pdev);
 300
 301         return 0;
 302 }
 303
 304 static struct platform_driver exynos_drm_platform_driver = {
 305         .probe          = exynos_drm_platform_probe,
 306         .remove         = exynos_drm_platform_remove,
 307         .driver         = {
 308                 .owner  = THIS_MODULE,
 309                 .name   = "exynos-drm",
 310         },
 311 };
 312
 313 static int __init exynos_drm_init(void)
 314 {
 315         int ret;
 316
 317 #ifdef CONFIG_DRM_EXYNOS_FIMD
 318         ret = platform_driver_register(&fimd_driver);
 319         if (ret < 0)
 320                 goto out_fimd;
 321 #endif
 322
 323 #ifdef CONFIG_DRM_EXYNOS_HDMI
 324         ret = platform_driver_register(&hdmi_driver);
 325         if (ret < 0)
 326                 goto out_hdmi;
 327         ret = platform_driver_register(&mixer_driver);
 328         if (ret < 0)
 329                 goto out_mixer;
 330         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 331         if (ret < 0)
 332                 goto out_common_hdmi;
 333
 334         ret = exynos_platform_device_hdmi_register();
 335         if (ret < 0)
 336                 goto out_common_hdmi_dev;
 337 #endif
 338
 339 #ifdef CONFIG_DRM_EXYNOS_VIDI
 340         ret = platform_driver_register(&vidi_driver);
 341         if (ret < 0)
 342                 goto out_vidi;
 343 #endif
 344
 345 #ifdef CONFIG_DRM_EXYNOS_G2D
 346         ret = platform_driver_register(&g2d_driver);
 347         if (ret < 0)
 348                 goto out_g2d;
 349 #endif
 350
 351 #ifdef CONFIG_DRM_EXYNOS_FIMC
 352         ret = platform_driver_register(&fimc_driver);
 353         if (ret < 0)
 354                 goto out_fimc;
 355 #endif
 356
 357 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 358         ret = platform_driver_register(&rotator_driver);
 359         if (ret < 0)
 360                 goto out_rotator;
 361 #endif
 362
 363 #ifdef CONFIG_DRM_EXYNOS_GSC
 364         ret = platform_driver_register(&gsc_driver);
 365         if (ret < 0)
 366                 goto out_gsc;
 367 #endif
 368
 369 #ifdef CONFIG_DRM_EXYNOS_IPP
 370         ret = platform_driver_register(&ipp_driver);
 371         if (ret < 0)
 372                 goto out_ipp;
 373
 374         ret = exynos_platform_device_ipp_register();
 375         if (ret < 0)
 376                 goto out_ipp_dev;
 377 #endif
 378
 379         ret = platform_driver_register(&exynos_drm_platform_driver);
 380         if (ret < 0)
 381                 goto out_drm;
 382
 383         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 384                                 NULL, 0);
 385         if (IS_ERR(exynos_drm_pdev)) {
 386                 ret = PTR_ERR(exynos_drm_pdev);
 387                 goto out;
 388         }
 389
 390         return 0;
 391
 392 out:
 393         platform_driver_unregister(&exynos_drm_platform_driver);
 394
 395 out_drm:
 396 #ifdef CONFIG_DRM_EXYNOS_IPP
 397         exynos_platform_device_ipp_unregister();
 398 out_ipp_dev:
 399         platform_driver_unregister(&ipp_driver);
 400 out_ipp:
 401 #endif
 402
 403 #ifdef CONFIG_DRM_EXYNOS_GSC
 404         platform_driver_unregister(&gsc_driver);
 405 out_gsc:
 406 #endif
 407
 408 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 409         platform_driver_unregister(&rotator_driver);
 410 out_rotator:
 411 #endif
 412
 413 #ifdef CONFIG_DRM_EXYNOS_FIMC
 414         platform_driver_unregister(&fimc_driver);
 415 out_fimc:
 416 #endif
 417
 418 #ifdef CONFIG_DRM_EXYNOS_G2D
 419         platform_driver_unregister(&g2d_driver);
 420 out_g2d:
 421 #endif
 422
 423 #ifdef CONFIG_DRM_EXYNOS_VIDI
 424         platform_driver_unregister(&vidi_driver);
 425 out_vidi:
 426 #endif
 427
 428 #ifdef CONFIG_DRM_EXYNOS_HDMI
 429         exynos_platform_device_hdmi_unregister();
 430 out_common_hdmi_dev:
 431         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 432 out_common_hdmi:
 433         platform_driver_unregister(&mixer_driver);
 434 out_mixer:
 435         platform_driver_unregister(&hdmi_driver);
 436 out_hdmi:
 437 #endif
 438
 439 #ifdef CONFIG_DRM_EXYNOS_FIMD
 440         platform_driver_unregister(&fimd_driver);
 441 out_fimd:
 442 #endif
 443         return ret;
 444 }
 445
 446 static void __exit exynos_drm_exit(void)
 447 {
 448         platform_device_unregister(exynos_drm_pdev);
 449
 450         platform_driver_unregister(&exynos_drm_platform_driver);
 451
 452 #ifdef CONFIG_DRM_EXYNOS_IPP
 453         exynos_platform_device_ipp_unregister();
 454         platform_driver_unregister(&ipp_driver);
 455 #endif
 456
 457 #ifdef CONFIG_DRM_EXYNOS_GSC
 458         platform_driver_unregister(&gsc_driver);
 459 #endif
 460
 461 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 462         platform_driver_unregister(&rotator_driver);
 463 #endif
 464
 465 #ifdef CONFIG_DRM_EXYNOS_FIMC
 466         platform_driver_unregister(&fimc_driver);
 467 #endif
 468
 469 #ifdef CONFIG_DRM_EXYNOS_G2D
 470         platform_driver_unregister(&g2d_driver);
 471 #endif
 472
 473 #ifdef CONFIG_DRM_EXYNOS_HDMI
 474         exynos_platform_device_hdmi_unregister();
 475         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 476         platform_driver_unregister(&mixer_driver);
 477         platform_driver_unregister(&hdmi_driver);
 478 #endif
 479
 480 #ifdef CONFIG_DRM_EXYNOS_VIDI
 481         platform_driver_unregister(&vidi_driver);
 482 #endif
 483
 484 #ifdef CONFIG_DRM_EXYNOS_FIMD
 485         platform_driver_unregister(&fimd_driver);
 486 #endif
 487 }
 488
 489 module_init(exynos_drm_init);
 490 module_exit(exynos_drm_exit);
 491
 492 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 493 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 494 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 495 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 496 MODULE_LICENSE("GPL");