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 "drmP.h"
  29 #include "drm.h"
  30 #include "drm_crtc_helper.h"
  31
  32 #include <drm/exynos_drm.h>
  33
  34 #include "exynos_drm_drv.h"
  35 #include "exynos_drm_crtc.h"
  36 #include "exynos_drm_encoder.h"
  37 #include "exynos_drm_fbdev.h"
  38 #include "exynos_drm_fb.h"
  39 #include "exynos_drm_gem.h"
  40 #include "exynos_drm_plane.h"
  41 #include "exynos_drm_vidi.h"
  42 #include "exynos_drm_dmabuf.h"
  43 #include "exynos_drm_g2d.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         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_crtc;
  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_crtc;
  94         }
  95
  96         ret = drm_vblank_init(dev, MAX_CRTC);
  97         if (ret)
  98                 goto err_crtc;
  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_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         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 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         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
 157         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 158
 159         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 160         if (!file_priv)
 161                 return -ENOMEM;
 162
 163         drm_prime_init_file_private(&file->prime);
 164         file->driver_priv = file_priv;
 165
 166         return exynos_drm_subdrv_open(dev, file);
 167 }
 168
 169 static void exynos_drm_preclose(struct drm_device *dev,
 170                                         struct drm_file *file)
 171 {
 172         struct exynos_drm_private *private = dev->dev_private;
 173         struct drm_pending_vblank_event *e, *t;
 174         unsigned long flags;
 175
 176         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 177
 178         /* release events of current file */
 179         spin_lock_irqsave(&dev->event_lock, flags);
 180         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 181                         base.link) {
 182                 if (e->base.file_priv == file) {
 183                         list_del(&e->base.link);
 184                         e->base.destroy(&e->base);
 185                 }
 186         }
 187         drm_prime_destroy_file_private(&file->prime);
 188         spin_unlock_irqrestore(&dev->event_lock, flags);
 189
 190         exynos_drm_subdrv_close(dev, file);
 191 }
 192
 193 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 194 {
 195         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 196
 197         if (!file->driver_priv)
 198                 return;
 199
 200         kfree(file->driver_priv);
 201         file->driver_priv = NULL;
 202 }
 203
 204 static void exynos_drm_lastclose(struct drm_device *dev)
 205 {
 206         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 207
 208         exynos_drm_fbdev_restore_mode(dev);
 209 }
 210
 211 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 212         .fault = exynos_drm_gem_fault,
 213         .open = drm_gem_vm_open,
 214         .close = drm_gem_vm_close,
 215 };
 216
 217 static struct drm_ioctl_desc exynos_ioctls[] = {
 218         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 219                         DRM_UNLOCKED | DRM_AUTH),
 220         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 221                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 222                         DRM_AUTH),
 223         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 224                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 225         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 226                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 227         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 228                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 229         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 230                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 231         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 232                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 233         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 234                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 235 };
 236
 237 static const struct file_operations exynos_drm_driver_fops = {
 238         .owner          = THIS_MODULE,
 239         .open           = drm_open,
 240         .mmap           = exynos_drm_gem_mmap,
 241         .poll           = drm_poll,
 242         .read           = drm_read,
 243         .unlocked_ioctl = drm_ioctl,
 244 #ifdef CONFIG_COMPAT
 245         .compat_ioctl = drm_compat_ioctl,
 246 #endif
 247         .release        = drm_release,
 248 };
 249
 250 static struct drm_driver exynos_drm_driver = {
 251         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 252                                         DRIVER_GEM | DRIVER_PRIME,
 253         .load                   = exynos_drm_load,
 254         .unload                 = exynos_drm_unload,
 255         .open                   = exynos_drm_open,
 256         .preclose               = exynos_drm_preclose,
 257         .lastclose              = exynos_drm_lastclose,
 258         .postclose              = exynos_drm_postclose,
 259         .get_vblank_counter     = drm_vblank_count,
 260         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 261         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 262         .gem_init_object        = exynos_drm_gem_init_object,
 263         .gem_free_object        = exynos_drm_gem_free_object,
 264         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 265         .dumb_create            = exynos_drm_gem_dumb_create,
 266         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 267         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 268         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 269         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 270         .gem_prime_export       = exynos_dmabuf_prime_export,
 271         .gem_prime_import       = exynos_dmabuf_prime_import,
 272         .ioctls                 = exynos_ioctls,
 273         .fops                   = &exynos_drm_driver_fops,
 274         .name   = DRIVER_NAME,
 275         .desc   = DRIVER_DESC,
 276         .date   = DRIVER_DATE,
 277         .major  = DRIVER_MAJOR,
 278         .minor  = DRIVER_MINOR,
 279 };
 280
 281 static int exynos_drm_platform_probe(struct platform_device *pdev)
 282 {
 283         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 284
 285         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 286
 287         return drm_platform_init(&exynos_drm_driver, pdev);
 288 }
 289
 290 static int exynos_drm_platform_remove(struct platform_device *pdev)
 291 {
 292         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 293
 294         drm_platform_exit(&exynos_drm_driver, pdev);
 295
 296         return 0;
 297 }
 298
 299 static struct platform_driver exynos_drm_platform_driver = {
 300         .probe          = exynos_drm_platform_probe,
 301         .remove         = __devexit_p(exynos_drm_platform_remove),
 302         .driver         = {
 303                 .owner  = THIS_MODULE,
 304                 .name   = "exynos-drm",
 305         },
 306 };
 307
 308 static int __init exynos_drm_init(void)
 309 {
 310         int ret;
 311
 312         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 313
 314 #ifdef CONFIG_DRM_EXYNOS_FIMD
 315         ret = platform_driver_register(&fimd_driver);
 316         if (ret < 0)
 317                 goto out_fimd;
 318 #endif
 319
 320 #ifdef CONFIG_DRM_EXYNOS_HDMI
 321         ret = platform_driver_register(&hdmi_driver);
 322         if (ret < 0)
 323                 goto out_hdmi;
 324         ret = platform_driver_register(&mixer_driver);
 325         if (ret < 0)
 326                 goto out_mixer;
 327         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 328         if (ret < 0)
 329                 goto out_common_hdmi;
 330 #endif
 331
 332 #ifdef CONFIG_DRM_EXYNOS_VIDI
 333         ret = platform_driver_register(&vidi_driver);
 334         if (ret < 0)
 335                 goto out_vidi;
 336 #endif
 337
 338 #ifdef CONFIG_DRM_EXYNOS_G2D
 339         ret = platform_driver_register(&g2d_driver);
 340         if (ret < 0)
 341                 goto out_g2d;
 342 #endif
 343
 344         ret = platform_driver_register(&exynos_drm_platform_driver);
 345         if (ret < 0)
 346                 goto out;
 347
 348         return 0;
 349
 350 out:
 351 #ifdef CONFIG_DRM_EXYNOS_G2D
 352         platform_driver_unregister(&g2d_driver);
 353 out_g2d:
 354 #endif
 355
 356 #ifdef CONFIG_DRM_EXYNOS_VIDI
 357 out_vidi:
 358         platform_driver_unregister(&vidi_driver);
 359 #endif
 360
 361 #ifdef CONFIG_DRM_EXYNOS_HDMI
 362         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 363 out_common_hdmi:
 364         platform_driver_unregister(&mixer_driver);
 365 out_mixer:
 366         platform_driver_unregister(&hdmi_driver);
 367 out_hdmi:
 368 #endif
 369
 370 #ifdef CONFIG_DRM_EXYNOS_FIMD
 371         platform_driver_unregister(&fimd_driver);
 372 out_fimd:
 373 #endif
 374         return ret;
 375 }
 376
 377 static void __exit exynos_drm_exit(void)
 378 {
 379         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 380
 381         platform_driver_unregister(&exynos_drm_platform_driver);
 382
 383 #ifdef CONFIG_DRM_EXYNOS_G2D
 384         platform_driver_unregister(&g2d_driver);
 385 #endif
 386
 387 #ifdef CONFIG_DRM_EXYNOS_HDMI
 388         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 389         platform_driver_unregister(&mixer_driver);
 390         platform_driver_unregister(&hdmi_driver);
 391 #endif
 392
 393 #ifdef CONFIG_DRM_EXYNOS_VIDI
 394         platform_driver_unregister(&vidi_driver);
 395 #endif
 396
 397 #ifdef CONFIG_DRM_EXYNOS_FIMD
 398         platform_driver_unregister(&fimd_driver);
 399 #endif
 400 }
 401
 402 module_init(exynos_drm_init);
 403 module_exit(exynos_drm_exit);
 404
 405 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 406 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 407 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 408 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 409 MODULE_LICENSE("GPL");