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  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #include <drm/drmP.h>
  29 #include <drm/drm_crtc_helper.h>
  30
  31 #include <drm/exynos_drm.h>
  32
  33 #include "exynos_drm_drv.h"
  34 #include "exynos_drm_crtc.h"
  35 #include "exynos_drm_encoder.h"
  36 #include "exynos_drm_fbdev.h"
  37 #include "exynos_drm_fb.h"
  38 #include "exynos_drm_gem.h"
  39 #include "exynos_drm_plane.h"
  40 #include "exynos_drm_vidi.h"
  41 #include "exynos_drm_dmabuf.h"
  42 #include "exynos_drm_g2d.h"
  43 #include "exynos_drm_iommu.h"
  44
  45 #define DRIVER_NAME     "exynos"
  46 #define DRIVER_DESC     "Samsung SoC DRM"
  47 #define DRIVER_DATE     "20110530"
  48 #define DRIVER_MAJOR    1
  49 #define DRIVER_MINOR    0
  50
  51 #define VBLANK_OFF_DELAY        50000
  52
  53 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  54 {
  55         struct exynos_drm_private *private;
  56         int ret;
  57         int nr;
  58
  59         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  60
  61         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  62         if (!private) {
  63                 DRM_ERROR("failed to allocate private\n");
  64                 return -ENOMEM;
  65         }
  66
  67         INIT_LIST_HEAD(&private->pageflip_event_list);
  68         dev->dev_private = (void *)private;
  69
  70         /*
  71          * create mapping to manage iommu table and set a pointer to iommu
  72          * mapping structure to iommu_mapping of private data.
  73          * also this iommu_mapping can be used to check if iommu is supported
  74          * or not.
  75          */
  76         ret = drm_create_iommu_mapping(dev);
  77         if (ret < 0) {
  78                 DRM_ERROR("failed to create iommu mapping.\n");
  79                 goto err_crtc;
  80         }
  81
  82         drm_mode_config_init(dev);
  83
  84         /* init kms poll for handling hpd */
  85         drm_kms_helper_poll_init(dev);
  86
  87         exynos_drm_mode_config_init(dev);
  88
  89         /*
  90          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  91          * without dependency of hardware.
  92          */
  93         for (nr = 0; nr < MAX_CRTC; nr++) {
  94                 ret = exynos_drm_crtc_create(dev, nr);
  95                 if (ret)
  96                         goto err_release_iommu_mapping;
  97         }
  98
  99         for (nr = 0; nr < MAX_PLANE; nr++) {
 100                 struct drm_plane *plane;
 101                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
 102
 103                 plane = exynos_plane_init(dev, possible_crtcs, false);
 104                 if (!plane)
 105                         goto err_release_iommu_mapping;
 106         }
 107
 108         ret = drm_vblank_init(dev, MAX_CRTC);
 109         if (ret)
 110                 goto err_release_iommu_mapping;
 111
 112         /*
 113          * probe sub drivers such as display controller and hdmi driver,
 114          * that were registered at probe() of platform driver
 115          * to the sub driver and create encoder and connector for them.
 116          */
 117         ret = exynos_drm_device_register(dev);
 118         if (ret)
 119                 goto err_vblank;
 120
 121         /* setup possible_clones. */
 122         exynos_drm_encoder_setup(dev);
 123
 124         /*
 125          * create and configure fb helper and also exynos specific
 126          * fbdev object.
 127          */
 128         ret = exynos_drm_fbdev_init(dev);
 129         if (ret) {
 130                 DRM_ERROR("failed to initialize drm fbdev\n");
 131                 goto err_drm_device;
 132         }
 133
 134         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 135
 136         return 0;
 137
 138 err_drm_device:
 139         exynos_drm_device_unregister(dev);
 140 err_vblank:
 141         drm_vblank_cleanup(dev);
 142 err_release_iommu_mapping:
 143         drm_release_iommu_mapping(dev);
 144 err_crtc:
 145         drm_mode_config_cleanup(dev);
 146         kfree(private);
 147
 148         return ret;
 149 }
 150
 151 static int exynos_drm_unload(struct drm_device *dev)
 152 {
 153         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 154
 155         exynos_drm_fbdev_fini(dev);
 156         exynos_drm_device_unregister(dev);
 157         drm_vblank_cleanup(dev);
 158         drm_kms_helper_poll_fini(dev);
 159         drm_mode_config_cleanup(dev);
 160
 161         drm_release_iommu_mapping(dev);
 162         kfree(dev->dev_private);
 163
 164         dev->dev_private = NULL;
 165
 166         return 0;
 167 }
 168
 169 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 170 {
 171         struct drm_exynos_file_private *file_priv;
 172
 173         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 174
 175         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 176         if (!file_priv)
 177                 return -ENOMEM;
 178
 179         file->driver_priv = file_priv;
 180
 181         return exynos_drm_subdrv_open(dev, file);
 182 }
 183
 184 static void exynos_drm_preclose(struct drm_device *dev,
 185                                         struct drm_file *file)
 186 {
 187         struct exynos_drm_private *private = dev->dev_private;
 188         struct drm_pending_vblank_event *e, *t;
 189         unsigned long flags;
 190
 191         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 192
 193         /* release events of current file */
 194         spin_lock_irqsave(&dev->event_lock, flags);
 195         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 196                         base.link) {
 197                 if (e->base.file_priv == file) {
 198                         list_del(&e->base.link);
 199                         e->base.destroy(&e->base);
 200                 }
 201         }
 202         spin_unlock_irqrestore(&dev->event_lock, flags);
 203
 204         exynos_drm_subdrv_close(dev, file);
 205 }
 206
 207 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 208 {
 209         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 210
 211         if (!file->driver_priv)
 212                 return;
 213
 214         kfree(file->driver_priv);
 215         file->driver_priv = NULL;
 216 }
 217
 218 static void exynos_drm_lastclose(struct drm_device *dev)
 219 {
 220         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 221
 222         exynos_drm_fbdev_restore_mode(dev);
 223 }
 224
 225 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 226         .fault = exynos_drm_gem_fault,
 227         .open = drm_gem_vm_open,
 228         .close = drm_gem_vm_close,
 229 };
 230
 231 static struct drm_ioctl_desc exynos_ioctls[] = {
 232         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 233                         DRM_UNLOCKED | DRM_AUTH),
 234         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 235                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 236                         DRM_AUTH),
 237         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 238                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 239         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 240                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 241         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 242                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 243         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 244                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 245         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 246                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 247         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 248                         exynos_g2d_exec_ioctl, 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_init_object        = exynos_drm_gem_init_object,
 277         .gem_free_object        = exynos_drm_gem_free_object,
 278         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 279         .dumb_create            = exynos_drm_gem_dumb_create,
 280         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 281         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 282         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 283         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 284         .gem_prime_export       = exynos_dmabuf_prime_export,
 285         .gem_prime_import       = exynos_dmabuf_prime_import,
 286         .ioctls                 = 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         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 298
 299         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 300
 301         return drm_platform_init(&exynos_drm_driver, pdev);
 302 }
 303
 304 static int exynos_drm_platform_remove(struct platform_device *pdev)
 305 {
 306         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 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         = __devexit_p(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         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 327
 328 #ifdef CONFIG_DRM_EXYNOS_FIMD
 329         ret = platform_driver_register(&fimd_driver);
 330         if (ret < 0)
 331                 goto out_fimd;
 332 #endif
 333
 334 #ifdef CONFIG_DRM_EXYNOS_HDMI
 335         ret = platform_driver_register(&hdmi_driver);
 336         if (ret < 0)
 337                 goto out_hdmi;
 338         ret = platform_driver_register(&mixer_driver);
 339         if (ret < 0)
 340                 goto out_mixer;
 341         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 342         if (ret < 0)
 343                 goto out_common_hdmi;
 344 #endif
 345
 346 #ifdef CONFIG_DRM_EXYNOS_VIDI
 347         ret = platform_driver_register(&vidi_driver);
 348         if (ret < 0)
 349                 goto out_vidi;
 350 #endif
 351
 352 #ifdef CONFIG_DRM_EXYNOS_G2D
 353         ret = platform_driver_register(&g2d_driver);
 354         if (ret < 0)
 355                 goto out_g2d;
 356 #endif
 357
 358         ret = platform_driver_register(&exynos_drm_platform_driver);
 359         if (ret < 0)
 360                 goto out;
 361
 362         return 0;
 363
 364 out:
 365 #ifdef CONFIG_DRM_EXYNOS_G2D
 366         platform_driver_unregister(&g2d_driver);
 367 out_g2d:
 368 #endif
 369
 370 #ifdef CONFIG_DRM_EXYNOS_VIDI
 371 out_vidi:
 372         platform_driver_unregister(&vidi_driver);
 373 #endif
 374
 375 #ifdef CONFIG_DRM_EXYNOS_HDMI
 376         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 377 out_common_hdmi:
 378         platform_driver_unregister(&mixer_driver);
 379 out_mixer:
 380         platform_driver_unregister(&hdmi_driver);
 381 out_hdmi:
 382 #endif
 383
 384 #ifdef CONFIG_DRM_EXYNOS_FIMD
 385         platform_driver_unregister(&fimd_driver);
 386 out_fimd:
 387 #endif
 388         return ret;
 389 }
 390
 391 static void __exit exynos_drm_exit(void)
 392 {
 393         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 394
 395         platform_driver_unregister(&exynos_drm_platform_driver);
 396
 397 #ifdef CONFIG_DRM_EXYNOS_G2D
 398         platform_driver_unregister(&g2d_driver);
 399 #endif
 400
 401 #ifdef CONFIG_DRM_EXYNOS_HDMI
 402         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 403         platform_driver_unregister(&mixer_driver);
 404         platform_driver_unregister(&hdmi_driver);
 405 #endif
 406
 407 #ifdef CONFIG_DRM_EXYNOS_VIDI
 408         platform_driver_unregister(&vidi_driver);
 409 #endif
 410
 411 #ifdef CONFIG_DRM_EXYNOS_FIMD
 412         platform_driver_unregister(&fimd_driver);
 413 #endif
 414 }
 415
 416 module_init(exynos_drm_init);
 417 module_exit(exynos_drm_exit);
 418
 419 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 420 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 421 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 422 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 423 MODULE_LICENSE("GPL");