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         int ret;
 159
 160         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 161         if (!file_priv)
 162                 return -ENOMEM;
 163
 164         file->driver_priv = file_priv;
 165
 166         ret = exynos_drm_subdrv_open(dev, file);
 167         if (ret) {
 168                 kfree(file_priv);
 169                 file->driver_priv = NULL;
 170         }
 171
 172         return ret;
 173 }
 174
 175 static void exynos_drm_preclose(struct drm_device *dev,
 176                                         struct drm_file *file)
 177 {
 178         struct exynos_drm_private *private = dev->dev_private;
 179         struct drm_pending_vblank_event *e, *t;
 180         unsigned long flags;
 181
 182         /* release events of current file */
 183         spin_lock_irqsave(&dev->event_lock, flags);
 184         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 185                         base.link) {
 186                 if (e->base.file_priv == file) {
 187                         list_del(&e->base.link);
 188                         e->base.destroy(&e->base);
 189                 }
 190         }
 191         spin_unlock_irqrestore(&dev->event_lock, flags);
 192
 193         exynos_drm_subdrv_close(dev, file);
 194 }
 195
 196 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 197 {
 198         if (!file->driver_priv)
 199                 return;
 200
 201         kfree(file->driver_priv);
 202         file->driver_priv = NULL;
 203 }
 204
 205 static void exynos_drm_lastclose(struct drm_device *dev)
 206 {
 207         exynos_drm_fbdev_restore_mode(dev);
 208 }
 209
 210 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 211         .fault = exynos_drm_gem_fault,
 212         .open = drm_gem_vm_open,
 213         .close = drm_gem_vm_close,
 214 };
 215
 216 static struct drm_ioctl_desc exynos_ioctls[] = {
 217         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 218                         DRM_UNLOCKED | DRM_AUTH),
 219         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 220                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 221                         DRM_AUTH),
 222         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 223                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 224         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 225                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 226         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 227                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 228         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 229                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 230         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 231                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 232         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 233                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 234         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 235                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 236         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 237                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 238         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 239                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 240         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 241                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 242 };
 243
 244 static const struct file_operations exynos_drm_driver_fops = {
 245         .owner          = THIS_MODULE,
 246         .open           = drm_open,
 247         .mmap           = exynos_drm_gem_mmap,
 248         .poll           = drm_poll,
 249         .read           = drm_read,
 250         .unlocked_ioctl = drm_ioctl,
 251 #ifdef CONFIG_COMPAT
 252         .compat_ioctl = drm_compat_ioctl,
 253 #endif
 254         .release        = drm_release,
 255 };
 256
 257 static struct drm_driver exynos_drm_driver = {
 258         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 259                                         DRIVER_GEM | DRIVER_PRIME,
 260         .load                   = exynos_drm_load,
 261         .unload                 = exynos_drm_unload,
 262         .open                   = exynos_drm_open,
 263         .preclose               = exynos_drm_preclose,
 264         .lastclose              = exynos_drm_lastclose,
 265         .postclose              = exynos_drm_postclose,
 266         .get_vblank_counter     = drm_vblank_count,
 267         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 268         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 269         .gem_init_object        = exynos_drm_gem_init_object,
 270         .gem_free_object        = exynos_drm_gem_free_object,
 271         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 272         .dumb_create            = exynos_drm_gem_dumb_create,
 273         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 274         .dumb_destroy           = drm_gem_dumb_destroy,
 275         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 276         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 277         .gem_prime_export       = exynos_dmabuf_prime_export,
 278         .gem_prime_import       = exynos_dmabuf_prime_import,
 279         .ioctls                 = exynos_ioctls,
 280         .fops                   = &exynos_drm_driver_fops,
 281         .name   = DRIVER_NAME,
 282         .desc   = DRIVER_DESC,
 283         .date   = DRIVER_DATE,
 284         .major  = DRIVER_MAJOR,
 285         .minor  = DRIVER_MINOR,
 286 };
 287
 288 static int exynos_drm_platform_probe(struct platform_device *pdev)
 289 {
 290         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 291         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 292
 293         return drm_platform_init(&exynos_drm_driver, pdev);
 294 }
 295
 296 static int exynos_drm_platform_remove(struct platform_device *pdev)
 297 {
 298         drm_platform_exit(&exynos_drm_driver, pdev);
 299
 300         return 0;
 301 }
 302
 303 static struct platform_driver exynos_drm_platform_driver = {
 304         .probe          = exynos_drm_platform_probe,
 305         .remove         = exynos_drm_platform_remove,
 306         .driver         = {
 307                 .owner  = THIS_MODULE,
 308                 .name   = "exynos-drm",
 309         },
 310 };
 311
 312 static int __init exynos_drm_init(void)
 313 {
 314         int ret;
 315
 316 #ifdef CONFIG_DRM_EXYNOS_FIMD
 317         ret = platform_driver_register(&fimd_driver);
 318         if (ret < 0)
 319                 goto out_fimd;
 320 #endif
 321
 322 #ifdef CONFIG_DRM_EXYNOS_HDMI
 323         ret = platform_driver_register(&hdmi_driver);
 324         if (ret < 0)
 325                 goto out_hdmi;
 326         ret = platform_driver_register(&mixer_driver);
 327         if (ret < 0)
 328                 goto out_mixer;
 329         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 330         if (ret < 0)
 331                 goto out_common_hdmi;
 332
 333         ret = exynos_platform_device_hdmi_register();
 334         if (ret < 0)
 335                 goto out_common_hdmi_dev;
 336 #endif
 337
 338 #ifdef CONFIG_DRM_EXYNOS_VIDI
 339         ret = platform_driver_register(&vidi_driver);
 340         if (ret < 0)
 341                 goto out_vidi;
 342 #endif
 343
 344 #ifdef CONFIG_DRM_EXYNOS_G2D
 345         ret = platform_driver_register(&g2d_driver);
 346         if (ret < 0)
 347                 goto out_g2d;
 348 #endif
 349
 350 #ifdef CONFIG_DRM_EXYNOS_FIMC
 351         ret = platform_driver_register(&fimc_driver);
 352         if (ret < 0)
 353                 goto out_fimc;
 354 #endif
 355
 356 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 357         ret = platform_driver_register(&rotator_driver);
 358         if (ret < 0)
 359                 goto out_rotator;
 360 #endif
 361
 362 #ifdef CONFIG_DRM_EXYNOS_GSC
 363         ret = platform_driver_register(&gsc_driver);
 364         if (ret < 0)
 365                 goto out_gsc;
 366 #endif
 367
 368 #ifdef CONFIG_DRM_EXYNOS_IPP
 369         ret = platform_driver_register(&ipp_driver);
 370         if (ret < 0)
 371                 goto out_ipp;
 372
 373         ret = exynos_platform_device_ipp_register();
 374         if (ret < 0)
 375                 goto out_ipp_dev;
 376 #endif
 377
 378         ret = platform_driver_register(&exynos_drm_platform_driver);
 379         if (ret < 0)
 380                 goto out_drm;
 381
 382         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 383                                 NULL, 0);
 384         if (IS_ERR(exynos_drm_pdev)) {
 385                 ret = PTR_ERR(exynos_drm_pdev);
 386                 goto out;
 387         }
 388
 389         return 0;
 390
 391 out:
 392         platform_driver_unregister(&exynos_drm_platform_driver);
 393
 394 out_drm:
 395 #ifdef CONFIG_DRM_EXYNOS_IPP
 396         exynos_platform_device_ipp_unregister();
 397 out_ipp_dev:
 398         platform_driver_unregister(&ipp_driver);
 399 out_ipp:
 400 #endif
 401
 402 #ifdef CONFIG_DRM_EXYNOS_GSC
 403         platform_driver_unregister(&gsc_driver);
 404 out_gsc:
 405 #endif
 406
 407 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 408         platform_driver_unregister(&rotator_driver);
 409 out_rotator:
 410 #endif
 411
 412 #ifdef CONFIG_DRM_EXYNOS_FIMC
 413         platform_driver_unregister(&fimc_driver);
 414 out_fimc:
 415 #endif
 416
 417 #ifdef CONFIG_DRM_EXYNOS_G2D
 418         platform_driver_unregister(&g2d_driver);
 419 out_g2d:
 420 #endif
 421
 422 #ifdef CONFIG_DRM_EXYNOS_VIDI
 423         platform_driver_unregister(&vidi_driver);
 424 out_vidi:
 425 #endif
 426
 427 #ifdef CONFIG_DRM_EXYNOS_HDMI
 428         exynos_platform_device_hdmi_unregister();
 429 out_common_hdmi_dev:
 430         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 431 out_common_hdmi:
 432         platform_driver_unregister(&mixer_driver);
 433 out_mixer:
 434         platform_driver_unregister(&hdmi_driver);
 435 out_hdmi:
 436 #endif
 437
 438 #ifdef CONFIG_DRM_EXYNOS_FIMD
 439         platform_driver_unregister(&fimd_driver);
 440 out_fimd:
 441 #endif
 442         return ret;
 443 }
 444
 445 static void __exit exynos_drm_exit(void)
 446 {
 447         platform_device_unregister(exynos_drm_pdev);
 448
 449         platform_driver_unregister(&exynos_drm_platform_driver);
 450
 451 #ifdef CONFIG_DRM_EXYNOS_IPP
 452         exynos_platform_device_ipp_unregister();
 453         platform_driver_unregister(&ipp_driver);
 454 #endif
 455
 456 #ifdef CONFIG_DRM_EXYNOS_GSC
 457         platform_driver_unregister(&gsc_driver);
 458 #endif
 459
 460 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 461         platform_driver_unregister(&rotator_driver);
 462 #endif
 463
 464 #ifdef CONFIG_DRM_EXYNOS_FIMC
 465         platform_driver_unregister(&fimc_driver);
 466 #endif
 467
 468 #ifdef CONFIG_DRM_EXYNOS_G2D
 469         platform_driver_unregister(&g2d_driver);
 470 #endif
 471
 472 #ifdef CONFIG_DRM_EXYNOS_HDMI
 473         exynos_platform_device_hdmi_unregister();
 474         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 475         platform_driver_unregister(&mixer_driver);
 476         platform_driver_unregister(&hdmi_driver);
 477 #endif
 478
 479 #ifdef CONFIG_DRM_EXYNOS_VIDI
 480         platform_driver_unregister(&vidi_driver);
 481 #endif
 482
 483 #ifdef CONFIG_DRM_EXYNOS_FIMD
 484         platform_driver_unregister(&fimd_driver);
 485 #endif
 486 }
 487
 488 module_init(exynos_drm_init);
 489 module_exit(exynos_drm_exit);
 490
 491 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 492 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 493 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 494 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 495 MODULE_LICENSE("GPL");