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
  44 #define DRIVER_NAME     "exynos"
  45 #define DRIVER_DESC     "Samsung SoC DRM"
  46 #define DRIVER_DATE     "20110530"
  47 #define DRIVER_MAJOR    1
  48 #define DRIVER_MINOR    0
  49
  50 #define VBLANK_OFF_DELAY        50000
  51
  52 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  53 {
  54         struct exynos_drm_private *private;
  55         int ret;
  56         int nr;
  57
  58         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  59
  60         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  61         if (!private) {
  62                 DRM_ERROR("failed to allocate private\n");
  63                 return -ENOMEM;
  64         }
  65
  66         INIT_LIST_HEAD(&private->pageflip_event_list);
  67         dev->dev_private = (void *)private;
  68
  69         drm_mode_config_init(dev);
  70
  71         /* init kms poll for handling hpd */
  72         drm_kms_helper_poll_init(dev);
  73
  74         exynos_drm_mode_config_init(dev);
  75
  76         /*
  77          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  78          * without dependency of hardware.
  79          */
  80         for (nr = 0; nr < MAX_CRTC; nr++) {
  81                 ret = exynos_drm_crtc_create(dev, nr);
  82                 if (ret)
  83                         goto err_crtc;
  84         }
  85
  86         for (nr = 0; nr < MAX_PLANE; nr++) {
  87                 struct drm_plane *plane;
  88                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
  89
  90                 plane = exynos_plane_init(dev, possible_crtcs, false);
  91                 if (!plane)
  92                         goto err_crtc;
  93         }
  94
  95         ret = drm_vblank_init(dev, MAX_CRTC);
  96         if (ret)
  97                 goto err_crtc;
  98
  99         /*
 100          * probe sub drivers such as display controller and hdmi driver,
 101          * that were registered at probe() of platform driver
 102          * to the sub driver and create encoder and connector for them.
 103          */
 104         ret = exynos_drm_device_register(dev);
 105         if (ret)
 106                 goto err_vblank;
 107
 108         /* setup possible_clones. */
 109         exynos_drm_encoder_setup(dev);
 110
 111         /*
 112          * create and configure fb helper and also exynos specific
 113          * fbdev object.
 114          */
 115         ret = exynos_drm_fbdev_init(dev);
 116         if (ret) {
 117                 DRM_ERROR("failed to initialize drm fbdev\n");
 118                 goto err_drm_device;
 119         }
 120
 121         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 122
 123         return 0;
 124
 125 err_drm_device:
 126         exynos_drm_device_unregister(dev);
 127 err_vblank:
 128         drm_vblank_cleanup(dev);
 129 err_crtc:
 130         drm_mode_config_cleanup(dev);
 131         kfree(private);
 132
 133         return ret;
 134 }
 135
 136 static int exynos_drm_unload(struct drm_device *dev)
 137 {
 138         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 139
 140         exynos_drm_fbdev_fini(dev);
 141         exynos_drm_device_unregister(dev);
 142         drm_vblank_cleanup(dev);
 143         drm_kms_helper_poll_fini(dev);
 144         drm_mode_config_cleanup(dev);
 145         kfree(dev->dev_private);
 146
 147         dev->dev_private = NULL;
 148
 149         return 0;
 150 }
 151
 152 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 153 {
 154         struct drm_exynos_file_private *file_priv;
 155
 156         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 157
 158         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 159         if (!file_priv)
 160                 return -ENOMEM;
 161
 162         file->driver_priv = file_priv;
 163
 164         return exynos_drm_subdrv_open(dev, file);
 165 }
 166
 167 static void exynos_drm_preclose(struct drm_device *dev,
 168                                         struct drm_file *file)
 169 {
 170         struct exynos_drm_private *private = dev->dev_private;
 171         struct drm_pending_vblank_event *e, *t;
 172         unsigned long flags;
 173
 174         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 175
 176         /* release events of current file */
 177         spin_lock_irqsave(&dev->event_lock, flags);
 178         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 179                         base.link) {
 180                 if (e->base.file_priv == file) {
 181                         list_del(&e->base.link);
 182                         e->base.destroy(&e->base);
 183                 }
 184         }
 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_VIDI_CONNECTION,
 225                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 226         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 227                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 228         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 229                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 230         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 231                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 232 };
 233
 234 static const struct file_operations exynos_drm_driver_fops = {
 235         .owner          = THIS_MODULE,
 236         .open           = drm_open,
 237         .mmap           = exynos_drm_gem_mmap,
 238         .poll           = drm_poll,
 239         .read           = drm_read,
 240         .unlocked_ioctl = drm_ioctl,
 241 #ifdef CONFIG_COMPAT
 242         .compat_ioctl = drm_compat_ioctl,
 243 #endif
 244         .release        = drm_release,
 245 };
 246
 247 static struct drm_driver exynos_drm_driver = {
 248         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 249                                         DRIVER_GEM | DRIVER_PRIME,
 250         .load                   = exynos_drm_load,
 251         .unload                 = exynos_drm_unload,
 252         .open                   = exynos_drm_open,
 253         .preclose               = exynos_drm_preclose,
 254         .lastclose              = exynos_drm_lastclose,
 255         .postclose              = exynos_drm_postclose,
 256         .get_vblank_counter     = drm_vblank_count,
 257         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 258         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 259         .gem_init_object        = exynos_drm_gem_init_object,
 260         .gem_free_object        = exynos_drm_gem_free_object,
 261         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 262         .dumb_create            = exynos_drm_gem_dumb_create,
 263         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 264         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 265         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 266         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 267         .gem_prime_export       = exynos_dmabuf_prime_export,
 268         .gem_prime_import       = exynos_dmabuf_prime_import,
 269         .ioctls                 = exynos_ioctls,
 270         .fops                   = &exynos_drm_driver_fops,
 271         .name   = DRIVER_NAME,
 272         .desc   = DRIVER_DESC,
 273         .date   = DRIVER_DATE,
 274         .major  = DRIVER_MAJOR,
 275         .minor  = DRIVER_MINOR,
 276 };
 277
 278 static int exynos_drm_platform_probe(struct platform_device *pdev)
 279 {
 280         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 281
 282         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 283
 284         return drm_platform_init(&exynos_drm_driver, pdev);
 285 }
 286
 287 static int exynos_drm_platform_remove(struct platform_device *pdev)
 288 {
 289         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 290
 291         drm_platform_exit(&exynos_drm_driver, pdev);
 292
 293         return 0;
 294 }
 295
 296 static struct platform_driver exynos_drm_platform_driver = {
 297         .probe          = exynos_drm_platform_probe,
 298         .remove         = __devexit_p(exynos_drm_platform_remove),
 299         .driver         = {
 300                 .owner  = THIS_MODULE,
 301                 .name   = "exynos-drm",
 302         },
 303 };
 304
 305 static int __init exynos_drm_init(void)
 306 {
 307         int ret;
 308
 309         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 310
 311 #ifdef CONFIG_DRM_EXYNOS_FIMD
 312         ret = platform_driver_register(&fimd_driver);
 313         if (ret < 0)
 314                 goto out_fimd;
 315 #endif
 316
 317 #ifdef CONFIG_DRM_EXYNOS_HDMI
 318         ret = platform_driver_register(&hdmi_driver);
 319         if (ret < 0)
 320                 goto out_hdmi;
 321         ret = platform_driver_register(&mixer_driver);
 322         if (ret < 0)
 323                 goto out_mixer;
 324         ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
 325         if (ret < 0)
 326                 goto out_common_hdmi;
 327 #endif
 328
 329 #ifdef CONFIG_DRM_EXYNOS_VIDI
 330         ret = platform_driver_register(&vidi_driver);
 331         if (ret < 0)
 332                 goto out_vidi;
 333 #endif
 334
 335 #ifdef CONFIG_DRM_EXYNOS_G2D
 336         ret = platform_driver_register(&g2d_driver);
 337         if (ret < 0)
 338                 goto out_g2d;
 339 #endif
 340
 341         ret = platform_driver_register(&exynos_drm_platform_driver);
 342         if (ret < 0)
 343                 goto out;
 344
 345         return 0;
 346
 347 out:
 348 #ifdef CONFIG_DRM_EXYNOS_G2D
 349         platform_driver_unregister(&g2d_driver);
 350 out_g2d:
 351 #endif
 352
 353 #ifdef CONFIG_DRM_EXYNOS_VIDI
 354 out_vidi:
 355         platform_driver_unregister(&vidi_driver);
 356 #endif
 357
 358 #ifdef CONFIG_DRM_EXYNOS_HDMI
 359         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 360 out_common_hdmi:
 361         platform_driver_unregister(&mixer_driver);
 362 out_mixer:
 363         platform_driver_unregister(&hdmi_driver);
 364 out_hdmi:
 365 #endif
 366
 367 #ifdef CONFIG_DRM_EXYNOS_FIMD
 368         platform_driver_unregister(&fimd_driver);
 369 out_fimd:
 370 #endif
 371         return ret;
 372 }
 373
 374 static void __exit exynos_drm_exit(void)
 375 {
 376         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 377
 378         platform_driver_unregister(&exynos_drm_platform_driver);
 379
 380 #ifdef CONFIG_DRM_EXYNOS_G2D
 381         platform_driver_unregister(&g2d_driver);
 382 #endif
 383
 384 #ifdef CONFIG_DRM_EXYNOS_HDMI
 385         platform_driver_unregister(&exynos_drm_common_hdmi_driver);
 386         platform_driver_unregister(&mixer_driver);
 387         platform_driver_unregister(&hdmi_driver);
 388 #endif
 389
 390 #ifdef CONFIG_DRM_EXYNOS_VIDI
 391         platform_driver_unregister(&vidi_driver);
 392 #endif
 393
 394 #ifdef CONFIG_DRM_EXYNOS_FIMD
 395         platform_driver_unregister(&fimd_driver);
 396 #endif
 397 }
 398
 399 module_init(exynos_drm_init);
 400 module_exit(exynos_drm_exit);
 401
 402 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 403 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 404 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 405 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 406 MODULE_LICENSE("GPL");