Pileus Git - ~andy/linux/blob - 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 <linux/anon_inodes.h>
  18
  19 #include <drm/exynos_drm.h>
  20
  21 #include "exynos_drm_drv.h"
  22 #include "exynos_drm_crtc.h"
  23 #include "exynos_drm_encoder.h"
  24 #include "exynos_drm_fbdev.h"
  25 #include "exynos_drm_fb.h"
  26 #include "exynos_drm_gem.h"
  27 #include "exynos_drm_plane.h"
  28 #include "exynos_drm_vidi.h"
  29 #include "exynos_drm_dmabuf.h"
  30 #include "exynos_drm_g2d.h"
  31 #include "exynos_drm_ipp.h"
  32 #include "exynos_drm_iommu.h"
  33
  34 #define DRIVER_NAME     "exynos"
  35 #define DRIVER_DESC     "Samsung SoC DRM"
  36 #define DRIVER_DATE     "20110530"
  37 #define DRIVER_MAJOR    1
  38 #define DRIVER_MINOR    0
  39
  40 #define VBLANK_OFF_DELAY        50000
  41
  42 /* platform device pointer for eynos drm device. */
  43 static struct platform_device *exynos_drm_pdev;
  44
  45 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  46 {
  47         struct exynos_drm_private *private;
  48         int ret;
  49         int nr;
  50
  51         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  52         if (!private)
  53                 return -ENOMEM;
  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         platform_set_drvdata(dev->platformdev, dev);
 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         exynos_drm_fbdev_fini(dev);
 144         exynos_drm_device_unregister(dev);
 145         drm_vblank_cleanup(dev);
 146         drm_kms_helper_poll_fini(dev);
 147         drm_mode_config_cleanup(dev);
 148
 149         drm_release_iommu_mapping(dev);
 150         kfree(dev->dev_private);
 151
 152         dev->dev_private = NULL;
 153
 154         return 0;
 155 }
 156
 157 static const struct file_operations exynos_drm_gem_fops = {
 158         .mmap = exynos_drm_gem_mmap_buffer,
 159 };
 160
 161 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 162 {
 163         struct drm_exynos_file_private *file_priv;
 164         struct file *anon_filp;
 165         int ret;
 166
 167         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 168         if (!file_priv)
 169                 return -ENOMEM;
 170
 171         file->driver_priv = file_priv;
 172
 173         ret = exynos_drm_subdrv_open(dev, file);
 174         if (ret) {
 175                 kfree(file_priv);
 176                 file->driver_priv = NULL;
 177         }
 178
 179         anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
 180                                         NULL, 0);
 181         if (IS_ERR(anon_filp)) {
 182                 kfree(file_priv);
 183                 return PTR_ERR(anon_filp);
 184         }
 185
 186         anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
 187         file_priv->anon_filp = anon_filp;
 188
 189         return ret;
 190 }
 191
 192 static void exynos_drm_preclose(struct drm_device *dev,
 193                                         struct drm_file *file)
 194 {
 195         exynos_drm_subdrv_close(dev, file);
 196 }
 197
 198 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 199 {
 200         struct exynos_drm_private *private = dev->dev_private;
 201         struct drm_exynos_file_private *file_priv;
 202         struct drm_pending_vblank_event *v, *vt;
 203         struct drm_pending_event *e, *et;
 204         unsigned long flags;
 205
 206         if (!file->driver_priv)
 207                 return;
 208
 209         /* Release all events not unhandled by page flip handler. */
 210         spin_lock_irqsave(&dev->event_lock, flags);
 211         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 212                         base.link) {
 213                 if (v->base.file_priv == file) {
 214                         list_del(&v->base.link);
 215                         drm_vblank_put(dev, v->pipe);
 216                         v->base.destroy(&v->base);
 217                 }
 218         }
 219
 220         /* Release all events handled by page flip handler but not freed. */
 221         list_for_each_entry_safe(e, et, &file->event_list, link) {
 222                 list_del(&e->link);
 223                 e->destroy(e);
 224         }
 225         spin_unlock_irqrestore(&dev->event_lock, flags);
 226
 227         file_priv = file->driver_priv;
 228         if (file_priv->anon_filp)
 229                 fput(file_priv->anon_filp);
 230
 231         kfree(file->driver_priv);
 232         file->driver_priv = NULL;
 233 }
 234
 235 static void exynos_drm_lastclose(struct drm_device *dev)
 236 {
 237         exynos_drm_fbdev_restore_mode(dev);
 238 }
 239
 240 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 241         .fault = exynos_drm_gem_fault,
 242         .open = drm_gem_vm_open,
 243         .close = drm_gem_vm_close,
 244 };
 245
 246 static const struct drm_ioctl_desc exynos_ioctls[] = {
 247         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 248                         DRM_UNLOCKED | DRM_AUTH),
 249         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 250                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 251                         DRM_AUTH),
 252         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 253                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 254         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 255                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 256         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 257                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 258         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 259                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 260         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 261                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 262         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 263                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 264         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 265                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 266         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 267                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 268         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 269                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 270         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 271                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 272 };
 273
 274 static const struct file_operations exynos_drm_driver_fops = {
 275         .owner          = THIS_MODULE,
 276         .open           = drm_open,
 277         .mmap           = exynos_drm_gem_mmap,
 278         .poll           = drm_poll,
 279         .read           = drm_read,
 280         .unlocked_ioctl = drm_ioctl,
 281 #ifdef CONFIG_COMPAT
 282         .compat_ioctl = drm_compat_ioctl,
 283 #endif
 284         .release        = drm_release,
 285 };
 286
 287 static struct drm_driver exynos_drm_driver = {
 288         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 289                                         DRIVER_GEM | DRIVER_PRIME,
 290         .load                   = exynos_drm_load,
 291         .unload                 = exynos_drm_unload,
 292         .open                   = exynos_drm_open,
 293         .preclose               = exynos_drm_preclose,
 294         .lastclose              = exynos_drm_lastclose,
 295         .postclose              = exynos_drm_postclose,
 296         .get_vblank_counter     = drm_vblank_count,
 297         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 298         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 299         .gem_free_object        = exynos_drm_gem_free_object,
 300         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 301         .dumb_create            = exynos_drm_gem_dumb_create,
 302         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 303         .dumb_destroy           = drm_gem_dumb_destroy,
 304         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 305         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 306         .gem_prime_export       = exynos_dmabuf_prime_export,
 307         .gem_prime_import       = exynos_dmabuf_prime_import,
 308         .ioctls                 = exynos_ioctls,
 309         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 310         .fops                   = &exynos_drm_driver_fops,
 311         .name   = DRIVER_NAME,
 312         .desc   = DRIVER_DESC,
 313         .date   = DRIVER_DATE,
 314         .major  = DRIVER_MAJOR,
 315         .minor  = DRIVER_MINOR,
 316 };
 317
 318 static int exynos_drm_platform_probe(struct platform_device *pdev)
 319 {
 320         int ret;
 321
 322         ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 323         if (ret)
 324                 return ret;
 325
 326         return drm_platform_init(&exynos_drm_driver, pdev);
 327 }
 328
 329 static int exynos_drm_platform_remove(struct platform_device *pdev)
 330 {
 331         drm_put_dev(platform_get_drvdata(pdev));
 332
 333         return 0;
 334 }
 335
 336 static struct platform_driver exynos_drm_platform_driver = {
 337         .probe          = exynos_drm_platform_probe,
 338         .remove         = exynos_drm_platform_remove,
 339         .driver         = {
 340                 .owner  = THIS_MODULE,
 341                 .name   = "exynos-drm",
 342         },
 343 };
 344
 345 static int __init exynos_drm_init(void)
 346 {
 347         int ret;
 348
 349 #ifdef CONFIG_DRM_EXYNOS_FIMD
 350         ret = platform_driver_register(&fimd_driver);
 351         if (ret < 0)
 352                 goto out_fimd;
 353 #endif
 354
 355 #ifdef CONFIG_DRM_EXYNOS_HDMI
 356         ret = platform_driver_register(&hdmi_driver);
 357         if (ret < 0)
 358                 goto out_hdmi;
 359         ret = platform_driver_register(&mixer_driver);
 360         if (ret < 0)
 361                 goto out_mixer;
 362         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 363         if (ret < 0)
 364                 goto out_common_hdmi;
 365
 366         ret = exynos_platform_device_hdmi_register();
 367         if (ret < 0)
 368                 goto out_common_hdmi_dev;
 369 #endif
 370
 371 #ifdef CONFIG_DRM_EXYNOS_VIDI
 372         ret = platform_driver_register(&vidi_driver);
 373         if (ret < 0)
 374                 goto out_vidi;
 375 #endif
 376
 377 #ifdef CONFIG_DRM_EXYNOS_G2D
 378         ret = platform_driver_register(&g2d_driver);
 379         if (ret < 0)
 380                 goto out_g2d;
 381 #endif
 382
 383 #ifdef CONFIG_DRM_EXYNOS_FIMC
 384         ret = platform_driver_register(&fimc_driver);
 385         if (ret < 0)
 386                 goto out_fimc;
 387 #endif
 388
 389 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 390         ret = platform_driver_register(&rotator_driver);
 391         if (ret < 0)
 392                 goto out_rotator;
 393 #endif
 394
 395 #ifdef CONFIG_DRM_EXYNOS_GSC
 396         ret = platform_driver_register(&gsc_driver);
 397         if (ret < 0)
 398                 goto out_gsc;
 399 #endif
 400
 401 #ifdef CONFIG_DRM_EXYNOS_IPP
 402         ret = platform_driver_register(&ipp_driver);
 403         if (ret < 0)
 404                 goto out_ipp;
 405
 406         ret = exynos_platform_device_ipp_register();
 407         if (ret < 0)
 408                 goto out_ipp_dev;
 409 #endif
 410
 411         ret = platform_driver_register(&exynos_drm_platform_driver);
 412         if (ret < 0)
 413                 goto out_drm;
 414
 415         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 416                                 NULL, 0);
 417         if (IS_ERR(exynos_drm_pdev)) {
 418                 ret = PTR_ERR(exynos_drm_pdev);
 419                 goto out;
 420         }
 421
 422         return 0;
 423
 424 out:
 425         platform_driver_unregister(&exynos_drm_platform_driver);
 426
 427 out_drm:
 428 #ifdef CONFIG_DRM_EXYNOS_IPP
 429         exynos_platform_device_ipp_unregister();
 430 out_ipp_dev:
 431         platform_driver_unregister(&ipp_driver);
 432 out_ipp:
 433 #endif
 434
 435 #ifdef CONFIG_DRM_EXYNOS_GSC
 436         platform_driver_unregister(&gsc_driver);
 437 out_gsc:
 438 #endif
 439
 440 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 441         platform_driver_unregister(&rotator_driver);
 442 out_rotator:
 443 #endif
 444
 445 #ifdef CONFIG_DRM_EXYNOS_FIMC
 446         platform_driver_unregister(&fimc_driver);
 447 out_fimc:
 448 #endif
 449
 450 #ifdef CONFIG_DRM_EXYNOS_G2D
 451         platform_driver_unregister(&g2d_driver);
 452 out_g2d:
 453 #endif
 454
 455 #ifdef CONFIG_DRM_EXYNOS_VIDI
 456         platform_driver_unregister(&vidi_driver);
 457 out_vidi:
 458 #endif
 459
 460 #ifdef CONFIG_DRM_EXYNOS_HDMI
 461         exynos_platform_device_hdmi_unregister();
 462 out_common_hdmi_dev:
 463         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 464 out_common_hdmi:
 465         platform_driver_unregister(&mixer_driver);
 466 out_mixer:
 467         platform_driver_unregister(&hdmi_driver);
 468 out_hdmi:
 469 #endif
 470
 471 #ifdef CONFIG_DRM_EXYNOS_FIMD
 472         platform_driver_unregister(&fimd_driver);
 473 out_fimd:
 474 #endif
 475         return ret;
 476 }
 477
 478 static void __exit exynos_drm_exit(void)
 479 {
 480         platform_device_unregister(exynos_drm_pdev);
 481
 482         platform_driver_unregister(&exynos_drm_platform_driver);
 483
 484 #ifdef CONFIG_DRM_EXYNOS_IPP
 485         exynos_platform_device_ipp_unregister();
 486         platform_driver_unregister(&ipp_driver);
 487 #endif
 488
 489 #ifdef CONFIG_DRM_EXYNOS_GSC
 490         platform_driver_unregister(&gsc_driver);
 491 #endif
 492
 493 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 494         platform_driver_unregister(&rotator_driver);
 495 #endif
 496
 497 #ifdef CONFIG_DRM_EXYNOS_FIMC
 498         platform_driver_unregister(&fimc_driver);
 499 #endif
 500
 501 #ifdef CONFIG_DRM_EXYNOS_G2D
 502         platform_driver_unregister(&g2d_driver);
 503 #endif
 504
 505 #ifdef CONFIG_DRM_EXYNOS_HDMI
 506         exynos_platform_device_hdmi_unregister();
 507         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 508         platform_driver_unregister(&mixer_driver);
 509         platform_driver_unregister(&hdmi_driver);
 510 #endif
 511
 512 #ifdef CONFIG_DRM_EXYNOS_VIDI
 513         platform_driver_unregister(&vidi_driver);
 514 #endif
 515
 516 #ifdef CONFIG_DRM_EXYNOS_FIMD
 517         platform_driver_unregister(&fimd_driver);
 518 #endif
 519 }
 520
 521 module_init(exynos_drm_init);
 522 module_exit(exynos_drm_exit);
 523
 524 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 525 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 526 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 527 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 528 MODULE_LICENSE("GPL");