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         exynos_drm_subdrv_close(dev, file);
 177 }
 178
 179 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 180 {
 181         struct exynos_drm_private *private = dev->dev_private;
 182         struct drm_pending_vblank_event *v, *vt;
 183         struct drm_pending_event *e, *et;
 184         unsigned long flags;
 185
 186         if (!file->driver_priv)
 187                 return;
 188
 189         /* Release all events not unhandled by page flip handler. */
 190         spin_lock_irqsave(&dev->event_lock, flags);
 191         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 192                         base.link) {
 193                 if (v->base.file_priv == file) {
 194                         list_del(&v->base.link);
 195                         drm_vblank_put(dev, v->pipe);
 196                         v->base.destroy(&v->base);
 197                 }
 198         }
 199
 200         /* Release all events handled by page flip handler but not freed. */
 201         list_for_each_entry_safe(e, et, &file->event_list, link) {
 202                 list_del(&e->link);
 203                 e->destroy(e);
 204         }
 205         spin_unlock_irqrestore(&dev->event_lock, flags);
 206
 207
 208         kfree(file->driver_priv);
 209         file->driver_priv = NULL;
 210 }
 211
 212 static void exynos_drm_lastclose(struct drm_device *dev)
 213 {
 214         exynos_drm_fbdev_restore_mode(dev);
 215 }
 216
 217 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 218         .fault = exynos_drm_gem_fault,
 219         .open = drm_gem_vm_open,
 220         .close = drm_gem_vm_close,
 221 };
 222
 223 static const struct drm_ioctl_desc exynos_ioctls[] = {
 224         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 225                         DRM_UNLOCKED | DRM_AUTH),
 226         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 227                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 228                         DRM_AUTH),
 229         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 230                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 231         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 232                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 233         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 234                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 235         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 236                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 237         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 238                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 239         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 240                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 241         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 242                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 243         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 244                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 245         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 246                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 247         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 248                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 249 };
 250
 251 static const struct file_operations exynos_drm_driver_fops = {
 252         .owner          = THIS_MODULE,
 253         .open           = drm_open,
 254         .mmap           = exynos_drm_gem_mmap,
 255         .poll           = drm_poll,
 256         .read           = drm_read,
 257         .unlocked_ioctl = drm_ioctl,
 258 #ifdef CONFIG_COMPAT
 259         .compat_ioctl = drm_compat_ioctl,
 260 #endif
 261         .release        = drm_release,
 262 };
 263
 264 static struct drm_driver exynos_drm_driver = {
 265         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 266                                         DRIVER_GEM | DRIVER_PRIME,
 267         .load                   = exynos_drm_load,
 268         .unload                 = exynos_drm_unload,
 269         .open                   = exynos_drm_open,
 270         .preclose               = exynos_drm_preclose,
 271         .lastclose              = exynos_drm_lastclose,
 272         .postclose              = exynos_drm_postclose,
 273         .get_vblank_counter     = drm_vblank_count,
 274         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 275         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 276         .gem_free_object        = exynos_drm_gem_free_object,
 277         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 278         .dumb_create            = exynos_drm_gem_dumb_create,
 279         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 280         .dumb_destroy           = drm_gem_dumb_destroy,
 281         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 282         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 283         .gem_prime_export       = exynos_dmabuf_prime_export,
 284         .gem_prime_import       = exynos_dmabuf_prime_import,
 285         .ioctls                 = exynos_ioctls,
 286         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 287         .fops                   = &exynos_drm_driver_fops,
 288         .name   = DRIVER_NAME,
 289         .desc   = DRIVER_DESC,
 290         .date   = DRIVER_DATE,
 291         .major  = DRIVER_MAJOR,
 292         .minor  = DRIVER_MINOR,
 293 };
 294
 295 static int exynos_drm_platform_probe(struct platform_device *pdev)
 296 {
 297         int ret;
 298
 299         ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 300         if (ret)
 301                 return ret;
 302
 303         return drm_platform_init(&exynos_drm_driver, pdev);
 304 }
 305
 306 static int exynos_drm_platform_remove(struct platform_device *pdev)
 307 {
 308         drm_platform_exit(&exynos_drm_driver, pdev);
 309
 310         return 0;
 311 }
 312
 313 static struct platform_driver exynos_drm_platform_driver = {
 314         .probe          = exynos_drm_platform_probe,
 315         .remove         = exynos_drm_platform_remove,
 316         .driver         = {
 317                 .owner  = THIS_MODULE,
 318                 .name   = "exynos-drm",
 319         },
 320 };
 321
 322 static int __init exynos_drm_init(void)
 323 {
 324         int ret;
 325
 326 #ifdef CONFIG_DRM_EXYNOS_FIMD
 327         ret = platform_driver_register(&fimd_driver);
 328         if (ret < 0)
 329                 goto out_fimd;
 330 #endif
 331
 332 #ifdef CONFIG_DRM_EXYNOS_HDMI
 333         ret = platform_driver_register(&hdmi_driver);
 334         if (ret < 0)
 335                 goto out_hdmi;
 336         ret = platform_driver_register(&mixer_driver);
 337         if (ret < 0)
 338                 goto out_mixer;
 339         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 340         if (ret < 0)
 341                 goto out_common_hdmi;
 342
 343         ret = exynos_platform_device_hdmi_register();
 344         if (ret < 0)
 345                 goto out_common_hdmi_dev;
 346 #endif
 347
 348 #ifdef CONFIG_DRM_EXYNOS_VIDI
 349         ret = platform_driver_register(&vidi_driver);
 350         if (ret < 0)
 351                 goto out_vidi;
 352 #endif
 353
 354 #ifdef CONFIG_DRM_EXYNOS_G2D
 355         ret = platform_driver_register(&g2d_driver);
 356         if (ret < 0)
 357                 goto out_g2d;
 358 #endif
 359
 360 #ifdef CONFIG_DRM_EXYNOS_FIMC
 361         ret = platform_driver_register(&fimc_driver);
 362         if (ret < 0)
 363                 goto out_fimc;
 364 #endif
 365
 366 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 367         ret = platform_driver_register(&rotator_driver);
 368         if (ret < 0)
 369                 goto out_rotator;
 370 #endif
 371
 372 #ifdef CONFIG_DRM_EXYNOS_GSC
 373         ret = platform_driver_register(&gsc_driver);
 374         if (ret < 0)
 375                 goto out_gsc;
 376 #endif
 377
 378 #ifdef CONFIG_DRM_EXYNOS_IPP
 379         ret = platform_driver_register(&ipp_driver);
 380         if (ret < 0)
 381                 goto out_ipp;
 382
 383         ret = exynos_platform_device_ipp_register();
 384         if (ret < 0)
 385                 goto out_ipp_dev;
 386 #endif
 387
 388         ret = platform_driver_register(&exynos_drm_platform_driver);
 389         if (ret < 0)
 390                 goto out_drm;
 391
 392         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 393                                 NULL, 0);
 394         if (IS_ERR(exynos_drm_pdev)) {
 395                 ret = PTR_ERR(exynos_drm_pdev);
 396                 goto out;
 397         }
 398
 399         return 0;
 400
 401 out:
 402         platform_driver_unregister(&exynos_drm_platform_driver);
 403
 404 out_drm:
 405 #ifdef CONFIG_DRM_EXYNOS_IPP
 406         exynos_platform_device_ipp_unregister();
 407 out_ipp_dev:
 408         platform_driver_unregister(&ipp_driver);
 409 out_ipp:
 410 #endif
 411
 412 #ifdef CONFIG_DRM_EXYNOS_GSC
 413         platform_driver_unregister(&gsc_driver);
 414 out_gsc:
 415 #endif
 416
 417 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 418         platform_driver_unregister(&rotator_driver);
 419 out_rotator:
 420 #endif
 421
 422 #ifdef CONFIG_DRM_EXYNOS_FIMC
 423         platform_driver_unregister(&fimc_driver);
 424 out_fimc:
 425 #endif
 426
 427 #ifdef CONFIG_DRM_EXYNOS_G2D
 428         platform_driver_unregister(&g2d_driver);
 429 out_g2d:
 430 #endif
 431
 432 #ifdef CONFIG_DRM_EXYNOS_VIDI
 433         platform_driver_unregister(&vidi_driver);
 434 out_vidi:
 435 #endif
 436
 437 #ifdef CONFIG_DRM_EXYNOS_HDMI
 438         exynos_platform_device_hdmi_unregister();
 439 out_common_hdmi_dev:
 440         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 441 out_common_hdmi:
 442         platform_driver_unregister(&mixer_driver);
 443 out_mixer:
 444         platform_driver_unregister(&hdmi_driver);
 445 out_hdmi:
 446 #endif
 447
 448 #ifdef CONFIG_DRM_EXYNOS_FIMD
 449         platform_driver_unregister(&fimd_driver);
 450 out_fimd:
 451 #endif
 452         return ret;
 453 }
 454
 455 static void __exit exynos_drm_exit(void)
 456 {
 457         platform_device_unregister(exynos_drm_pdev);
 458
 459         platform_driver_unregister(&exynos_drm_platform_driver);
 460
 461 #ifdef CONFIG_DRM_EXYNOS_IPP
 462         exynos_platform_device_ipp_unregister();
 463         platform_driver_unregister(&ipp_driver);
 464 #endif
 465
 466 #ifdef CONFIG_DRM_EXYNOS_GSC
 467         platform_driver_unregister(&gsc_driver);
 468 #endif
 469
 470 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 471         platform_driver_unregister(&rotator_driver);
 472 #endif
 473
 474 #ifdef CONFIG_DRM_EXYNOS_FIMC
 475         platform_driver_unregister(&fimc_driver);
 476 #endif
 477
 478 #ifdef CONFIG_DRM_EXYNOS_G2D
 479         platform_driver_unregister(&g2d_driver);
 480 #endif
 481
 482 #ifdef CONFIG_DRM_EXYNOS_HDMI
 483         exynos_platform_device_hdmi_unregister();
 484         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 485         platform_driver_unregister(&mixer_driver);
 486         platform_driver_unregister(&hdmi_driver);
 487 #endif
 488
 489 #ifdef CONFIG_DRM_EXYNOS_VIDI
 490         platform_driver_unregister(&vidi_driver);
 491 #endif
 492
 493 #ifdef CONFIG_DRM_EXYNOS_FIMD
 494         platform_driver_unregister(&fimd_driver);
 495 #endif
 496 }
 497
 498 module_init(exynos_drm_init);
 499 module_exit(exynos_drm_exit);
 500
 501 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 502 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 503 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 504 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 505 MODULE_LICENSE("GPL");