drivers/gpu/drm/etnaviv/etnaviv_drv.c

   1 /*
   2  * Copyright (C) 2015 Etnaviv Project
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 as published by
   6  * the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 #include <linux/component.h>
  18 #include <linux/of_platform.h>
  19 #include <drm/drm_of.h>
  20
  21 #include "etnaviv_drv.h"
  22 #include "etnaviv_gpu.h"
  23 #include "etnaviv_gem.h"
  24 #include "etnaviv_mmu.h"
  25 #include "etnaviv_gem.h"
  26
  27 #ifdef CONFIG_DRM_ETNAVIV_REGISTER_LOGGING
  28 static bool reglog;
  29 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
  30 module_param(reglog, bool, 0600);
  31 #else
  32 #define reglog 0
  33 #endif
  34
  35 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name,
  36                 const char *dbgname)
  37 {
  38         struct resource *res;
  39         void __iomem *ptr;
  40
  41         if (name)
  42                 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
  43         else
  44                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  45
  46         ptr = devm_ioremap_resource(&pdev->dev, res);
  47         if (IS_ERR(ptr)) {
  48                 dev_err(&pdev->dev, "failed to ioremap %s: %ld\n", name,
  49                         PTR_ERR(ptr));
  50                 return ptr;
  51         }
  52
  53         if (reglog)
  54                 dev_printk(KERN_DEBUG, &pdev->dev, "IO:region %s 0x%p %08zx\n",
  55                            dbgname, ptr, (size_t)resource_size(res));
  56
  57         return ptr;
  58 }
  59
  60 void etnaviv_writel(u32 data, void __iomem *addr)
  61 {
  62         if (reglog)
  63                 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
  64
  65         writel(data, addr);
  66 }
  67
  68 u32 etnaviv_readl(const void __iomem *addr)
  69 {
  70         u32 val = readl(addr);
  71
  72         if (reglog)
  73                 printk(KERN_DEBUG "IO:R %p %08x\n", addr, val);
  74
  75         return val;
  76 }
  77
  78 /*
  79  * DRM operations:
  80  */
  81
  82
  83 static void load_gpu(struct drm_device *dev)
  84 {
  85         struct etnaviv_drm_private *priv = dev->dev_private;
  86         unsigned int i;
  87
  88         for (i = 0; i < ETNA_MAX_PIPES; i++) {
  89                 struct etnaviv_gpu *g = priv->gpu[i];
  90
  91                 if (g) {
  92                         int ret;
  93
  94                         ret = etnaviv_gpu_init(g);
  95                         if (ret)
  96                                 priv->gpu[i] = NULL;
  97                 }
  98         }
  99 }
 100
 101 static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
 102 {
 103         struct etnaviv_file_private *ctx;
 104
 105         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 106         if (!ctx)
 107                 return -ENOMEM;
 108
 109         file->driver_priv = ctx;
 110
 111         return 0;
 112 }
 113
 114 static void etnaviv_preclose(struct drm_device *dev, struct drm_file *file)
 115 {
 116         struct etnaviv_drm_private *priv = dev->dev_private;
 117         struct etnaviv_file_private *ctx = file->driver_priv;
 118         unsigned int i;
 119
 120         for (i = 0; i < ETNA_MAX_PIPES; i++) {
 121                 struct etnaviv_gpu *gpu = priv->gpu[i];
 122
 123                 if (gpu) {
 124                         mutex_lock(&gpu->lock);
 125                         if (gpu->lastctx == ctx)
 126                                 gpu->lastctx = NULL;
 127                         mutex_unlock(&gpu->lock);
 128                 }
 129         }
 130
 131         kfree(ctx);
 132 }
 133
 134 /*
 135  * DRM debugfs:
 136  */
 137
 138 #ifdef CONFIG_DEBUG_FS
 139 static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
 140 {
 141         struct etnaviv_drm_private *priv = dev->dev_private;
 142
 143         etnaviv_gem_describe_objects(priv, m);
 144
 145         return 0;
 146 }
 147
 148 static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
 149 {
 150         struct drm_printer p = drm_seq_file_printer(m);
 151
 152         read_lock(&dev->vma_offset_manager->vm_lock);
 153         drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
 154         read_unlock(&dev->vma_offset_manager->vm_lock);
 155
 156         return 0;
 157 }
 158
 159 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
 160 {
 161         struct drm_printer p = drm_seq_file_printer(m);
 162
 163         seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
 164
 165         mutex_lock(&gpu->mmu->lock);
 166         drm_mm_print(&gpu->mmu->mm, &p);
 167         mutex_unlock(&gpu->mmu->lock);
 168
 169         return 0;
 170 }
 171
 172 static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
 173 {
 174         struct etnaviv_cmdbuf *buf = gpu->buffer;
 175         u32 size = buf->size;
 176         u32 *ptr = buf->vaddr;
 177         u32 i;
 178
 179         seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
 180                         buf->vaddr, (u64)buf->paddr, size - buf->user_size);
 181
 182         for (i = 0; i < size / 4; i++) {
 183                 if (i && !(i % 4))
 184                         seq_puts(m, "\n");
 185                 if (i % 4 == 0)
 186                         seq_printf(m, "\t0x%p: ", ptr + i);
 187                 seq_printf(m, "%08x ", *(ptr + i));
 188         }
 189         seq_puts(m, "\n");
 190 }
 191
 192 static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
 193 {
 194         seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));
 195
 196         mutex_lock(&gpu->lock);
 197         etnaviv_buffer_dump(gpu, m);
 198         mutex_unlock(&gpu->lock);
 199
 200         return 0;
 201 }
 202
 203 static int show_unlocked(struct seq_file *m, void *arg)
 204 {
 205         struct drm_info_node *node = (struct drm_info_node *) m->private;
 206         struct drm_device *dev = node->minor->dev;
 207         int (*show)(struct drm_device *dev, struct seq_file *m) =
 208                         node->info_ent->data;
 209
 210         return show(dev, m);
 211 }
 212
 213 static int show_each_gpu(struct seq_file *m, void *arg)
 214 {
 215         struct drm_info_node *node = (struct drm_info_node *) m->private;
 216         struct drm_device *dev = node->minor->dev;
 217         struct etnaviv_drm_private *priv = dev->dev_private;
 218         struct etnaviv_gpu *gpu;
 219         int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
 220                         node->info_ent->data;
 221         unsigned int i;
 222         int ret = 0;
 223
 224         for (i = 0; i < ETNA_MAX_PIPES; i++) {
 225                 gpu = priv->gpu[i];
 226                 if (!gpu)
 227                         continue;
 228
 229                 ret = show(gpu, m);
 230                 if (ret < 0)
 231                         break;
 232         }
 233
 234         return ret;
 235 }
 236
 237 static struct drm_info_list etnaviv_debugfs_list[] = {
 238                 {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
 239                 {"gem", show_unlocked, 0, etnaviv_gem_show},
 240                 { "mm", show_unlocked, 0, etnaviv_mm_show },
 241                 {"mmu", show_each_gpu, 0, etnaviv_mmu_show},
 242                 {"ring", show_each_gpu, 0, etnaviv_ring_show},
 243 };
 244
 245 static int etnaviv_debugfs_init(struct drm_minor *minor)
 246 {
 247         struct drm_device *dev = minor->dev;
 248         int ret;
 249
 250         ret = drm_debugfs_create_files(etnaviv_debugfs_list,
 251                         ARRAY_SIZE(etnaviv_debugfs_list),
 252                         minor->debugfs_root, minor);
 253
 254         if (ret) {
 255                 dev_err(dev->dev, "could not install etnaviv_debugfs_list\n");
 256                 return ret;
 257         }
 258
 259         return ret;
 260 }
 261
 262 static void etnaviv_debugfs_cleanup(struct drm_minor *minor)
 263 {
 264         drm_debugfs_remove_files(etnaviv_debugfs_list,
 265                         ARRAY_SIZE(etnaviv_debugfs_list), minor);
 266 }
 267 #endif
 268
 269 /*
 270  * DRM ioctls:
 271  */
 272
 273 static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
 274                 struct drm_file *file)
 275 {
 276         struct etnaviv_drm_private *priv = dev->dev_private;
 277         struct drm_etnaviv_param *args = data;
 278         struct etnaviv_gpu *gpu;
 279
 280         if (args->pipe >= ETNA_MAX_PIPES)
 281                 return -EINVAL;
 282
 283         gpu = priv->gpu[args->pipe];
 284         if (!gpu)
 285                 return -ENXIO;
 286
 287         return etnaviv_gpu_get_param(gpu, args->param, &args->value);
 288 }
 289
 290 static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
 291                 struct drm_file *file)
 292 {
 293         struct drm_etnaviv_gem_new *args = data;
 294
 295         if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
 296                             ETNA_BO_FORCE_MMU))
 297                 return -EINVAL;
 298
 299         return etnaviv_gem_new_handle(dev, file, args->size,
 300                         args->flags, &args->handle);
 301 }
 302
 303 #define TS(t) ((struct timespec){ \
 304         .tv_sec = (t).tv_sec, \
 305         .tv_nsec = (t).tv_nsec \
 306 })
 307
 308 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
 309                 struct drm_file *file)
 310 {
 311         struct drm_etnaviv_gem_cpu_prep *args = data;
 312         struct drm_gem_object *obj;
 313         int ret;
 314
 315         if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
 316                 return -EINVAL;
 317
 318         obj = drm_gem_object_lookup(file, args->handle);
 319         if (!obj)
 320                 return -ENOENT;
 321
 322         ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout));
 323
 324         drm_gem_object_unreference_unlocked(obj);
 325
 326         return ret;
 327 }
 328
 329 static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
 330                 struct drm_file *file)
 331 {
 332         struct drm_etnaviv_gem_cpu_fini *args = data;
 333         struct drm_gem_object *obj;
 334         int ret;
 335
 336         if (args->flags)
 337                 return -EINVAL;
 338
 339         obj = drm_gem_object_lookup(file, args->handle);
 340         if (!obj)
 341                 return -ENOENT;
 342
 343         ret = etnaviv_gem_cpu_fini(obj);
 344
 345         drm_gem_object_unreference_unlocked(obj);
 346
 347         return ret;
 348 }
 349
 350 static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data,
 351                 struct drm_file *file)
 352 {
 353         struct drm_etnaviv_gem_info *args = data;
 354         struct drm_gem_object *obj;
 355         int ret;
 356
 357         if (args->pad)
 358                 return -EINVAL;
 359
 360         obj = drm_gem_object_lookup(file, args->handle);
 361         if (!obj)
 362                 return -ENOENT;
 363
 364         ret = etnaviv_gem_mmap_offset(obj, &args->offset);
 365         drm_gem_object_unreference_unlocked(obj);
 366
 367         return ret;
 368 }
 369
 370 static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
 371                 struct drm_file *file)
 372 {
 373         struct drm_etnaviv_wait_fence *args = data;
 374         struct etnaviv_drm_private *priv = dev->dev_private;
 375         struct timespec *timeout = &TS(args->timeout);
 376         struct etnaviv_gpu *gpu;
 377
 378         if (args->flags & ~(ETNA_WAIT_NONBLOCK))
 379                 return -EINVAL;
 380
 381         if (args->pipe >= ETNA_MAX_PIPES)
 382                 return -EINVAL;
 383
 384         gpu = priv->gpu[args->pipe];
 385         if (!gpu)
 386                 return -ENXIO;
 387
 388         if (args->flags & ETNA_WAIT_NONBLOCK)
 389                 timeout = NULL;
 390
 391         return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
 392                                                     timeout);
 393 }
 394
 395 static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
 396         struct drm_file *file)
 397 {
 398         struct drm_etnaviv_gem_userptr *args = data;
 399         int access;
 400
 401         if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
 402             args->flags == 0)
 403                 return -EINVAL;
 404
 405         if (offset_in_page(args->user_ptr | args->user_size) ||
 406             (uintptr_t)args->user_ptr != args->user_ptr ||
 407             (u32)args->user_size != args->user_size ||
 408             args->user_ptr & ~PAGE_MASK)
 409                 return -EINVAL;
 410
 411         if (args->flags & ETNA_USERPTR_WRITE)
 412                 access = VERIFY_WRITE;
 413         else
 414                 access = VERIFY_READ;
 415
 416         if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr,
 417                        args->user_size))
 418                 return -EFAULT;
 419
 420         return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
 421                                        args->user_size, args->flags,
 422                                        &args->handle);
 423 }
 424
 425 static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
 426         struct drm_file *file)
 427 {
 428         struct etnaviv_drm_private *priv = dev->dev_private;
 429         struct drm_etnaviv_gem_wait *args = data;
 430         struct timespec *timeout = &TS(args->timeout);
 431         struct drm_gem_object *obj;
 432         struct etnaviv_gpu *gpu;
 433         int ret;
 434
 435         if (args->flags & ~(ETNA_WAIT_NONBLOCK))
 436                 return -EINVAL;
 437
 438         if (args->pipe >= ETNA_MAX_PIPES)
 439                 return -EINVAL;
 440
 441         gpu = priv->gpu[args->pipe];
 442         if (!gpu)
 443                 return -ENXIO;
 444
 445         obj = drm_gem_object_lookup(file, args->handle);
 446         if (!obj)
 447                 return -ENOENT;
 448
 449         if (args->flags & ETNA_WAIT_NONBLOCK)
 450                 timeout = NULL;
 451
 452         ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
 453
 454         drm_gem_object_unreference_unlocked(obj);
 455
 456         return ret;
 457 }
 458
 459 static const struct drm_ioctl_desc etnaviv_ioctls[] = {
 460 #define ETNA_IOCTL(n, func, flags) \
 461         DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
 462         ETNA_IOCTL(GET_PARAM,    get_param,    DRM_AUTH|DRM_RENDER_ALLOW),
 463         ETNA_IOCTL(GEM_NEW,      gem_new,      DRM_AUTH|DRM_RENDER_ALLOW),
 464         ETNA_IOCTL(GEM_INFO,     gem_info,     DRM_AUTH|DRM_RENDER_ALLOW),
 465         ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
 466         ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
 467         ETNA_IOCTL(GEM_SUBMIT,   gem_submit,   DRM_AUTH|DRM_RENDER_ALLOW),
 468         ETNA_IOCTL(WAIT_FENCE,   wait_fence,   DRM_AUTH|DRM_RENDER_ALLOW),
 469         ETNA_IOCTL(GEM_USERPTR,  gem_userptr,  DRM_AUTH|DRM_RENDER_ALLOW),
 470         ETNA_IOCTL(GEM_WAIT,     gem_wait,     DRM_AUTH|DRM_RENDER_ALLOW),
 471 };
 472
 473 static const struct vm_operations_struct vm_ops = {
 474         .fault = etnaviv_gem_fault,
 475         .open = drm_gem_vm_open,
 476         .close = drm_gem_vm_close,
 477 };
 478
 479 static const struct file_operations fops = {
 480         .owner              = THIS_MODULE,
 481         .open               = drm_open,
 482         .release            = drm_release,
 483         .unlocked_ioctl     = drm_ioctl,
 484         .compat_ioctl       = drm_compat_ioctl,
 485         .poll               = drm_poll,
 486         .read               = drm_read,
 487         .llseek             = no_llseek,
 488         .mmap               = etnaviv_gem_mmap,
 489 };
 490
 491 static struct drm_driver etnaviv_drm_driver = {
 492         .driver_features    = DRIVER_GEM |
 493                                 DRIVER_PRIME |
 494                                 DRIVER_RENDER,
 495         .open               = etnaviv_open,
 496         .preclose           = etnaviv_preclose,
 497         .gem_free_object_unlocked = etnaviv_gem_free_object,
 498         .gem_vm_ops         = &vm_ops,
 499         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 500         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 501         .gem_prime_export   = drm_gem_prime_export,
 502         .gem_prime_import   = drm_gem_prime_import,
 503         .gem_prime_pin      = etnaviv_gem_prime_pin,
 504         .gem_prime_unpin    = etnaviv_gem_prime_unpin,
 505         .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
 506         .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
 507         .gem_prime_vmap     = etnaviv_gem_prime_vmap,
 508         .gem_prime_vunmap   = etnaviv_gem_prime_vunmap,
 509         .gem_prime_mmap     = etnaviv_gem_prime_mmap,
 510 #ifdef CONFIG_DEBUG_FS
 511         .debugfs_init       = etnaviv_debugfs_init,
 512         .debugfs_cleanup    = etnaviv_debugfs_cleanup,
 513 #endif
 514         .ioctls             = etnaviv_ioctls,
 515         .num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,
 516         .fops               = &fops,
 517         .name               = "etnaviv",
 518         .desc               = "etnaviv DRM",
 519         .date               = "20151214",
 520         .major              = 1,
 521         .minor              = 0,
 522 };
 523
 524 /*
 525  * Platform driver:
 526  */
 527 static int etnaviv_bind(struct device *dev)
 528 {
 529         struct etnaviv_drm_private *priv;
 530         struct drm_device *drm;
 531         int ret;
 532
 533         drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
 534         if (IS_ERR(drm))
 535                 return PTR_ERR(drm);
 536
 537         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 538         if (!priv) {
 539                 dev_err(dev, "failed to allocate private data\n");
 540                 ret = -ENOMEM;
 541                 goto out_unref;
 542         }
 543         drm->dev_private = priv;
 544
 545         priv->wq = alloc_ordered_workqueue("etnaviv", 0);
 546         if (!priv->wq) {
 547                 ret = -ENOMEM;
 548                 goto out_wq;
 549         }
 550
 551         mutex_init(&priv->gem_lock);
 552         INIT_LIST_HEAD(&priv->gem_list);
 553         priv->num_gpus = 0;
 554
 555         dev_set_drvdata(dev, drm);
 556
 557         ret = component_bind_all(dev, drm);
 558         if (ret < 0)
 559                 goto out_bind;
 560
 561         load_gpu(drm);
 562
 563         ret = drm_dev_register(drm, 0);
 564         if (ret)
 565                 goto out_register;
 566
 567         return 0;
 568
 569 out_register:
 570         component_unbind_all(dev, drm);
 571 out_bind:
 572         flush_workqueue(priv->wq);
 573         destroy_workqueue(priv->wq);
 574 out_wq:
 575         kfree(priv);
 576 out_unref:
 577         drm_dev_unref(drm);
 578
 579         return ret;
 580 }
 581
 582 static void etnaviv_unbind(struct device *dev)
 583 {
 584         struct drm_device *drm = dev_get_drvdata(dev);
 585         struct etnaviv_drm_private *priv = drm->dev_private;
 586
 587         drm_dev_unregister(drm);
 588
 589         flush_workqueue(priv->wq);
 590         destroy_workqueue(priv->wq);
 591
 592         component_unbind_all(dev, drm);
 593
 594         drm->dev_private = NULL;
 595         kfree(priv);
 596
 597         drm_dev_unref(drm);
 598 }
 599
 600 static const struct component_master_ops etnaviv_master_ops = {
 601         .bind = etnaviv_bind,
 602         .unbind = etnaviv_unbind,
 603 };
 604
 605 static int compare_of(struct device *dev, void *data)
 606 {
 607         struct device_node *np = data;
 608
 609         return dev->of_node == np;
 610 }
 611
 612 static int compare_str(struct device *dev, void *data)
 613 {
 614         return !strcmp(dev_name(dev), data);
 615 }
 616
 617 static int etnaviv_pdev_probe(struct platform_device *pdev)
 618 {
 619         struct device *dev = &pdev->dev;
 620         struct device_node *node = dev->of_node;
 621         struct component_match *match = NULL;
 622
 623         dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 624
 625         if (node) {
 626                 struct device_node *core_node;
 627                 int i;
 628
 629                 for (i = 0; ; i++) {
 630                         core_node = of_parse_phandle(node, "cores", i);
 631                         if (!core_node)
 632                                 break;
 633
 634                         drm_of_component_match_add(&pdev->dev, &match,
 635                                                    compare_of, core_node);
 636                         of_node_put(core_node);
 637                 }
 638         } else if (dev->platform_data) {
 639                 char **names = dev->platform_data;
 640                 unsigned i;
 641
 642                 for (i = 0; names[i]; i++)
 643                         component_match_add(dev, &match, compare_str, names[i]);
 644         }
 645
 646         return component_master_add_with_match(dev, &etnaviv_master_ops, match);
 647 }
 648
 649 static int etnaviv_pdev_remove(struct platform_device *pdev)
 650 {
 651         component_master_del(&pdev->dev, &etnaviv_master_ops);
 652
 653         return 0;
 654 }
 655
 656 static const struct of_device_id dt_match[] = {
 657         { .compatible = "fsl,imx-gpu-subsystem" },
 658         { .compatible = "marvell,dove-gpu-subsystem" },
 659         {}
 660 };
 661 MODULE_DEVICE_TABLE(of, dt_match);
 662
 663 static struct platform_driver etnaviv_platform_driver = {
 664         .probe      = etnaviv_pdev_probe,
 665         .remove     = etnaviv_pdev_remove,
 666         .driver     = {
 667                 .name   = "etnaviv",
 668                 .of_match_table = dt_match,
 669         },
 670 };
 671
 672 static int __init etnaviv_init(void)
 673 {
 674         int ret;
 675
 676         etnaviv_validate_init();
 677
 678         ret = platform_driver_register(&etnaviv_gpu_driver);
 679         if (ret != 0)
 680                 return ret;
 681
 682         ret = platform_driver_register(&etnaviv_platform_driver);
 683         if (ret != 0)
 684                 platform_driver_unregister(&etnaviv_gpu_driver);
 685
 686         return ret;
 687 }
 688 module_init(etnaviv_init);
 689
 690 static void __exit etnaviv_exit(void)
 691 {
 692         platform_driver_unregister(&etnaviv_gpu_driver);
 693         platform_driver_unregister(&etnaviv_platform_driver);
 694 }
 695 module_exit(etnaviv_exit);
 696
 697 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
 698 MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
 699 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
 700 MODULE_DESCRIPTION("etnaviv DRM Driver");
 701 MODULE_LICENSE("GPL v2");
 702 MODULE_ALIAS("platform:etnaviv");