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                 ret = exynos_plane_init(dev, nr);
  89                 if (ret)
  90                         goto err_crtc;
  91         }
  92
  93         ret = drm_vblank_init(dev, MAX_CRTC);
  94         if (ret)
  95                 goto err_crtc;
  96
  97         /*
  98          * probe sub drivers such as display controller and hdmi driver,
  99          * that were registered at probe() of platform driver
 100          * to the sub driver and create encoder and connector for them.
 101          */
 102         ret = exynos_drm_device_register(dev);
 103         if (ret)
 104                 goto err_vblank;
 105
 106         /* setup possible_clones. */
 107         exynos_drm_encoder_setup(dev);
 108
 109         /*
 110          * create and configure fb helper and also exynos specific
 111          * fbdev object.
 112          */
 113         ret = exynos_drm_fbdev_init(dev);
 114         if (ret) {
 115                 DRM_ERROR("failed to initialize drm fbdev\n");
 116                 goto err_drm_device;
 117         }
 118
 119         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 120
 121         return 0;
 122
 123 err_drm_device:
 124         exynos_drm_device_unregister(dev);
 125 err_vblank:
 126         drm_vblank_cleanup(dev);
 127 err_crtc:
 128         drm_mode_config_cleanup(dev);
 129         kfree(private);
 130
 131         return ret;
 132 }
 133
 134 static int exynos_drm_unload(struct drm_device *dev)
 135 {
 136         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 137
 138         exynos_drm_fbdev_fini(dev);
 139         exynos_drm_device_unregister(dev);
 140         drm_vblank_cleanup(dev);
 141         drm_kms_helper_poll_fini(dev);
 142         drm_mode_config_cleanup(dev);
 143         kfree(dev->dev_private);
 144
 145         dev->dev_private = NULL;
 146
 147         return 0;
 148 }
 149
 150 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 151 {
 152         struct drm_exynos_file_private *file_priv;
 153
 154         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 155
 156         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 157         if (!file_priv)
 158                 return -ENOMEM;
 159
 160         drm_prime_init_file_private(&file->prime);
 161         file->driver_priv = file_priv;
 162
 163         return exynos_drm_subdrv_open(dev, file);
 164 }
 165
 166 static void exynos_drm_preclose(struct drm_device *dev,
 167                                         struct drm_file *file)
 168 {
 169         struct exynos_drm_private *private = dev->dev_private;
 170         struct drm_pending_vblank_event *e, *t;
 171         unsigned long flags;
 172
 173         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 174
 175         /* release events of current file */
 176         spin_lock_irqsave(&dev->event_lock, flags);
 177         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 178                         base.link) {
 179                 if (e->base.file_priv == file) {
 180                         list_del(&e->base.link);
 181                         e->base.destroy(&e->base);
 182                 }
 183         }
 184         drm_prime_destroy_file_private(&file->prime);
 185         spin_unlock_irqrestore(&dev->event_lock, flags);
 186
 187         exynos_drm_subdrv_close(dev, file);
 188 }
 189
 190 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 191 {
 192         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 193
 194         if (!file->driver_priv)
 195                 return;
 196
 197         kfree(file->driver_priv);
 198         file->driver_priv = NULL;
 199 }
 200
 201 static void exynos_drm_lastclose(struct drm_device *dev)
 202 {
 203         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 204
 205         exynos_drm_fbdev_restore_mode(dev);
 206 }
 207
 208 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 209         .fault = exynos_drm_gem_fault,
 210         .open = drm_gem_vm_open,
 211         .close = drm_gem_vm_close,
 212 };
 213
 214 static struct drm_ioctl_desc exynos_ioctls[] = {
 215         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 216                         DRM_UNLOCKED | DRM_AUTH),
 217         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 218                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 219                         DRM_AUTH),
 220         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 221                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 222         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 223                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 224         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
 225                         DRM_UNLOCKED | DRM_AUTH),
 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 };
 235
 236 static const struct file_operations exynos_drm_driver_fops = {
 237         .owner          = THIS_MODULE,
 238         .open           = drm_open,
 239         .mmap           = exynos_drm_gem_mmap,
 240         .poll           = drm_poll,
 241         .read           = drm_read,
 242         .unlocked_ioctl = drm_ioctl,
 243         .release        = drm_release,
 244 };
 245
 246 static struct drm_driver exynos_drm_driver = {
 247         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
 248                                   DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 249         .load                   = exynos_drm_load,
 250         .unload                 = exynos_drm_unload,
 251         .open                   = exynos_drm_open,
 252         .preclose               = exynos_drm_preclose,
 253         .lastclose              = exynos_drm_lastclose,
 254         .postclose              = exynos_drm_postclose,
 255         .get_vblank_counter     = drm_vblank_count,
 256         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 257         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 258         .gem_init_object        = exynos_drm_gem_init_object,
 259         .gem_free_object        = exynos_drm_gem_free_object,
 260         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 261         .dumb_create            = exynos_drm_gem_dumb_create,
 262         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 263         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 264         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 265         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 266         .gem_prime_export       = exynos_dmabuf_prime_export,
 267         .gem_prime_import       = exynos_dmabuf_prime_import,
 268         .ioctls                 = exynos_ioctls,
 269         .fops                   = &exynos_drm_driver_fops,
 270         .name   = DRIVER_NAME,
 271         .desc   = DRIVER_DESC,
 272         .date   = DRIVER_DATE,
 273         .major  = DRIVER_MAJOR,
 274         .minor  = DRIVER_MINOR,
 275 };
 276
 277 static int exynos_drm_platform_probe(struct platform_device *pdev)
 278 {
 279         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 280
 281         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 282
 283         return drm_platform_init(&exynos_drm_driver, pdev);
 284 }
 285
 286 static int exynos_drm_platform_remove(struct platform_device *pdev)
 287 {
 288         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 289
 290         drm_platform_exit(&exynos_drm_driver, pdev);
 291
 292         return 0;
 293 }
 294
 295 static struct platform_driver exynos_drm_platform_driver = {
 296         .probe          = exynos_drm_platform_probe,
 297         .remove         = __devexit_p(exynos_drm_platform_remove),
 298         .driver         = {
 299                 .owner  = THIS_MODULE,
 300                 .name   = "exynos-drm",
 301         },
 302 };
 303
 304 static int __init exynos_drm_init(void)
 305 {
 306         int ret;
 307
 308         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 309
 310 #ifdef CONFIG_DRM_EXYNOS_FIMD
 311         ret = platform_driver_register(&fimd_driver);
 312         if (ret < 0)
 313                 goto out_fimd;
 314 #endif
 315
 316 #ifdef CONFIG_DRM_EXYNOS_HDMI
 317         ret = platform_driver_register(&hdmi_driver);
 318         if (ret < 0)
 319                 goto out_hdmi;
 320         ret = platform_driver_register(&mixer_driver);
 321         if (ret < 0)
 322                 goto out_mixer;
 323         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 324         if (ret < 0)
 325                 goto out_common_hdmi;
 326 #endif
 327
 328 #ifdef CONFIG_DRM_EXYNOS_VIDI
 329         ret = platform_driver_register(&vidi_driver);
 330         if (ret < 0)
 331                 goto out_vidi;
 332 #endif
 333
 334 #ifdef CONFIG_DRM_EXYNOS_G2D
 335         ret = platform_driver_register(&g2d_driver);
 336         if (ret < 0)
 337                 goto out_g2d;
 338 #endif
 339
 340         ret = platform_driver_register(&exynos_drm_platform_driver);
 341         if (ret < 0)
 342                 goto out;
 343
 344         return 0;
 345
 346 out:
 347 #ifdef CONFIG_DRM_EXYNOS_G2D
 348         platform_driver_unregister(&g2d_driver);
 349 out_g2d:
 350 #endif
 351
 352 #ifdef CONFIG_DRM_EXYNOS_VIDI
 353 out_vidi:
 354         platform_driver_unregister(&vidi_driver);
 355 #endif
 356
 357 #ifdef CONFIG_DRM_EXYNOS_HDMI
 358         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 359 out_common_hdmi:
 360         platform_driver_unregister(&mixer_driver);
 361 out_mixer:
 362         platform_driver_unregister(&hdmi_driver);
 363 out_hdmi:
 364 #endif
 365
 366 #ifdef CONFIG_DRM_EXYNOS_FIMD
 367         platform_driver_unregister(&fimd_driver);
 368 out_fimd:
 369 #endif
 370         return ret;
 371 }
 372
 373 static void __exit exynos_drm_exit(void)
 374 {
 375         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 376
 377         platform_driver_unregister(&exynos_drm_platform_driver);
 378
 379 #ifdef CONFIG_DRM_EXYNOS_G2D
 380         platform_driver_unregister(&g2d_driver);
 381 #endif
 382
 383 #ifdef CONFIG_DRM_EXYNOS_HDMI
 384         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 385         platform_driver_unregister(&mixer_driver);
 386         platform_driver_unregister(&hdmi_driver);
 387 #endif
 388
 389 #ifdef CONFIG_DRM_EXYNOS_VIDI
 390         platform_driver_unregister(&vidi_driver);
 391 #endif
 392
 393 #ifdef CONFIG_DRM_EXYNOS_FIMD
 394         platform_driver_unregister(&fimd_driver);
 395 #endif
 396 }
 397
 398 module_init(exynos_drm_init);
 399 module_exit(exynos_drm_exit);
 400
 401 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 402 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 403 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 404 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 405 MODULE_LICENSE("GPL");