SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/i915/i915_drv.c

   1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
   2  */
   3 /*
   4  *
   5  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  */
  29
  30 #include <linux/device.h>
  31 #include "drmP.h"
  32 #include "drm.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36 #include <linux/console.h>
  37 #include "drm_crtc_helper.h"
  38
  39 static int i915_modeset = -1;
  40 module_param_named(modeset, i915_modeset, int, 0400);
  41
  42 unsigned int i915_fbpercrtc = 0;
  43 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
  44
  45 unsigned int i915_powersave = 1;
  46 module_param_named(powersave, i915_powersave, int, 0400);
  47
  48 unsigned int i915_lvds_downclock = 0;
  49 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
  50
  51 static struct drm_driver driver;
  52
  53 #define INTEL_VGA_DEVICE(id, info) {            \
  54         .class = PCI_CLASS_DISPLAY_VGA << 8,    \
  55         .class_mask = 0xffff00,                 \
  56         .vendor = 0x8086,                       \
  57         .device = id,                           \
  58         .subvendor = PCI_ANY_ID,                \
  59         .subdevice = PCI_ANY_ID,                \
  60         .driver_data = (unsigned long) info }
  61
  62 const static struct intel_device_info intel_i830_info = {
  63         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  64 };
  65
  66 const static struct intel_device_info intel_845g_info = {
  67         .is_i8xx = 1,
  68 };
  69
  70 const static struct intel_device_info intel_i85x_info = {
  71         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  72 };
  73
  74 const static struct intel_device_info intel_i865g_info = {
  75         .is_i8xx = 1,
  76 };
  77
  78 const static struct intel_device_info intel_i915g_info = {
  79         .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
  80 };
  81 const static struct intel_device_info intel_i915gm_info = {
  82         .is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
  83         .cursor_needs_physical = 1,
  84 };
  85 const static struct intel_device_info intel_i945g_info = {
  86         .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
  87 };
  88 const static struct intel_device_info intel_i945gm_info = {
  89         .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
  90         .has_hotplug = 1, .cursor_needs_physical = 1,
  91 };
  92
  93 const static struct intel_device_info intel_i965g_info = {
  94         .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
  95 };
  96
  97 const static struct intel_device_info intel_i965gm_info = {
  98         .is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
  99         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
 100         .has_hotplug = 1,
 101 };
 102
 103 const static struct intel_device_info intel_g33_info = {
 104         .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 105         .has_hotplug = 1,
 106 };
 107
 108 const static struct intel_device_info intel_g45_info = {
 109         .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 110         .has_pipe_cxsr = 1,
 111         .has_hotplug = 1,
 112 };
 113
 114 const static struct intel_device_info intel_gm45_info = {
 115         .is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
 116         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 117         .has_pipe_cxsr = 1,
 118         .has_hotplug = 1,
 119 };
 120
 121 const static struct intel_device_info intel_pineview_info = {
 122         .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 123         .need_gfx_hws = 1,
 124         .has_hotplug = 1,
 125 };
 126
 127 const static struct intel_device_info intel_ironlake_d_info = {
 128         .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 129         .has_pipe_cxsr = 1,
 130         .has_hotplug = 1,
 131 };
 132
 133 const static struct intel_device_info intel_ironlake_m_info = {
 134         .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 135         .need_gfx_hws = 1, .has_rc6 = 1,
 136         .has_hotplug = 1,
 137 };
 138
 139 const static struct intel_device_info intel_sandybridge_d_info = {
 140         .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 141         .has_pipe_cxsr = 1,
 142         .has_hotplug = 1,
 143 };
 144
 145 const static struct pci_device_id pciidlist[] = {
 146         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
 147         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
 148         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
 149         INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
 150         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
 151         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
 152         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
 153         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
 154         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
 155         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
 156         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
 157         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
 158         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
 159         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
 160         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
 161         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
 162         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
 163         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
 164         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
 165         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
 166         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
 167         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
 168         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
 169         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
 170         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
 171         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
 172         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 173         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 174         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 175         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 176         INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info),
 177         {0, 0, 0}
 178 };
 179
 180 #if defined(CONFIG_DRM_I915_KMS)
 181 MODULE_DEVICE_TABLE(pci, pciidlist);
 182 #endif
 183
 184 static int i915_drm_freeze(struct drm_device *dev)
 185 {
 186         struct drm_i915_private *dev_priv = dev->dev_private;
 187
 188         pci_save_state(dev->pdev);
 189
 190         /* If KMS is active, we do the leavevt stuff here */
 191         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 192                 int error = i915_gem_idle(dev);
 193                 if (error) {
 194                         dev_err(&dev->pdev->dev,
 195                                 "GEM idle failed, resume might fail\n");
 196                         return error;
 197                 }
 198                 drm_irq_uninstall(dev);
 199         }
 200
 201         i915_save_state(dev);
 202
 203         intel_opregion_free(dev, 1);
 204
 205         /* Modeset on resume, not lid events */
 206         dev_priv->modeset_on_lid = 0;
 207
 208         return 0;
 209 }
 210
 211 static int i915_suspend(struct drm_device *dev, pm_message_t state)
 212 {
 213         int error;
 214
 215         if (!dev || !dev->dev_private) {
 216                 DRM_ERROR("dev: %p\n", dev);
 217                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 218                 return -ENODEV;
 219         }
 220
 221         if (state.event == PM_EVENT_PRETHAW)
 222                 return 0;
 223
 224         error = i915_drm_freeze(dev);
 225         if (error)
 226                 return error;
 227
 228         if (state.event == PM_EVENT_SUSPEND) {
 229                 /* Shut down the device */
 230                 pci_disable_device(dev->pdev);
 231                 pci_set_power_state(dev->pdev, PCI_D3hot);
 232         }
 233
 234         return 0;
 235 }
 236
 237 static int i915_drm_thaw(struct drm_device *dev)
 238 {
 239         struct drm_i915_private *dev_priv = dev->dev_private;
 240         int error = 0;
 241
 242         i915_restore_state(dev);
 243
 244         intel_opregion_init(dev, 1);
 245
 246         /* KMS EnterVT equivalent */
 247         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 248                 mutex_lock(&dev->struct_mutex);
 249                 dev_priv->mm.suspended = 0;
 250
 251                 error = i915_gem_init_ringbuffer(dev);
 252                 mutex_unlock(&dev->struct_mutex);
 253
 254                 drm_irq_install(dev);
 255
 256                 /* Resume the modeset for every activated CRTC */
 257                 drm_helper_resume_force_mode(dev);
 258         }
 259
 260         dev_priv->modeset_on_lid = 0;
 261
 262         return error;
 263 }
 264
 265 static int i915_resume(struct drm_device *dev)
 266 {
 267         if (pci_enable_device(dev->pdev))
 268                 return -EIO;
 269
 270         pci_set_master(dev->pdev);
 271
 272         return i915_drm_thaw(dev);
 273 }
 274
 275 /**
 276  * i965_reset - reset chip after a hang
 277  * @dev: drm device to reset
 278  * @flags: reset domains
 279  *
 280  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 281  * reset or otherwise an error code.
 282  *
 283  * Procedure is fairly simple:
 284  *   - reset the chip using the reset reg
 285  *   - re-init context state
 286  *   - re-init hardware status page
 287  *   - re-init ring buffer
 288  *   - re-init interrupt state
 289  *   - re-init display
 290  */
 291 int i965_reset(struct drm_device *dev, u8 flags)
 292 {
 293         drm_i915_private_t *dev_priv = dev->dev_private;
 294         unsigned long timeout;
 295         u8 gdrst;
 296         /*
 297          * We really should only reset the display subsystem if we actually
 298          * need to
 299          */
 300         bool need_display = true;
 301
 302         mutex_lock(&dev->struct_mutex);
 303
 304         /*
 305          * Clear request list
 306          */
 307         i915_gem_retire_requests(dev);
 308
 309         if (need_display)
 310                 i915_save_display(dev);
 311
 312         if (IS_I965G(dev) || IS_G4X(dev)) {
 313                 /*
 314                  * Set the domains we want to reset, then the reset bit (bit 0).
 315                  * Clear the reset bit after a while and wait for hardware status
 316                  * bit (bit 1) to be set
 317                  */
 318                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 319                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 320                 udelay(50);
 321                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 322
 323                 /* ...we don't want to loop forever though, 500ms should be plenty */
 324                timeout = jiffies + msecs_to_jiffies(500);
 325                 do {
 326                         udelay(100);
 327                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 328                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 329
 330                 if (gdrst & 0x1) {
 331                         WARN(true, "i915: Failed to reset chip\n");
 332                         mutex_unlock(&dev->struct_mutex);
 333                         return -EIO;
 334                 }
 335         } else {
 336                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 337                 return -ENODEV;
 338         }
 339
 340         /* Ok, now get things going again... */
 341
 342         /*
 343          * Everything depends on having the GTT running, so we need to start
 344          * there.  Fortunately we don't need to do this unless we reset the
 345          * chip at a PCI level.
 346          *
 347          * Next we need to restore the context, but we don't use those
 348          * yet either...
 349          *
 350          * Ring buffer needs to be re-initialized in the KMS case, or if X
 351          * was running at the time of the reset (i.e. we weren't VT
 352          * switched away).
 353          */
 354         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 355             !dev_priv->mm.suspended) {
 356                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 357                 struct drm_gem_object *obj = ring->ring_obj;
 358                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
 359                 dev_priv->mm.suspended = 0;
 360
 361                 /* Stop the ring if it's running. */
 362                 I915_WRITE(PRB0_CTL, 0);
 363                 I915_WRITE(PRB0_TAIL, 0);
 364                 I915_WRITE(PRB0_HEAD, 0);
 365
 366                 /* Initialize the ring. */
 367                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 368                 I915_WRITE(PRB0_CTL,
 369                            ((obj->size - 4096) & RING_NR_PAGES) |
 370                            RING_NO_REPORT |
 371                            RING_VALID);
 372                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 373                         i915_kernel_lost_context(dev);
 374                 else {
 375                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 376                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 377                         ring->space = ring->head - (ring->tail + 8);
 378                         if (ring->space < 0)
 379                                 ring->space += ring->Size;
 380                 }
 381
 382                 mutex_unlock(&dev->struct_mutex);
 383                 drm_irq_uninstall(dev);
 384                 drm_irq_install(dev);
 385                 mutex_lock(&dev->struct_mutex);
 386         }
 387
 388         /*
 389          * Display needs restore too...
 390          */
 391         if (need_display)
 392                 i915_restore_display(dev);
 393
 394         mutex_unlock(&dev->struct_mutex);
 395         return 0;
 396 }
 397
 398
 399 static int __devinit
 400 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 401 {
 402         return drm_get_dev(pdev, ent, &driver);
 403 }
 404
 405 static void
 406 i915_pci_remove(struct pci_dev *pdev)
 407 {
 408         struct drm_device *dev = pci_get_drvdata(pdev);
 409
 410         drm_put_dev(dev);
 411 }
 412
 413 static int i915_pm_suspend(struct device *dev)
 414 {
 415         struct pci_dev *pdev = to_pci_dev(dev);
 416         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 417         int error;
 418
 419         if (!drm_dev || !drm_dev->dev_private) {
 420                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 421                 return -ENODEV;
 422         }
 423
 424         error = i915_drm_freeze(drm_dev);
 425         if (error)
 426                 return error;
 427
 428         pci_disable_device(pdev);
 429         pci_set_power_state(pdev, PCI_D3hot);
 430
 431         return 0;
 432 }
 433
 434 static int i915_pm_resume(struct device *dev)
 435 {
 436         struct pci_dev *pdev = to_pci_dev(dev);
 437         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 438
 439         return i915_resume(drm_dev);
 440 }
 441
 442 static int i915_pm_freeze(struct device *dev)
 443 {
 444         struct pci_dev *pdev = to_pci_dev(dev);
 445         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 446
 447         if (!drm_dev || !drm_dev->dev_private) {
 448                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 449                 return -ENODEV;
 450         }
 451
 452         return i915_drm_freeze(drm_dev);
 453 }
 454
 455 static int i915_pm_thaw(struct device *dev)
 456 {
 457         struct pci_dev *pdev = to_pci_dev(dev);
 458         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 459
 460         return i915_drm_thaw(drm_dev);
 461 }
 462
 463 static int i915_pm_poweroff(struct device *dev)
 464 {
 465         struct pci_dev *pdev = to_pci_dev(dev);
 466         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 467
 468         return i915_drm_freeze(drm_dev);
 469 }
 470
 471 const struct dev_pm_ops i915_pm_ops = {
 472      .suspend = i915_pm_suspend,
 473      .resume = i915_pm_resume,
 474      .freeze = i915_pm_freeze,
 475      .thaw = i915_pm_thaw,
 476      .poweroff = i915_pm_poweroff,
 477      .restore = i915_pm_resume,
 478 };
 479
 480 static struct vm_operations_struct i915_gem_vm_ops = {
 481         .fault = i915_gem_fault,
 482         .open = drm_gem_vm_open,
 483         .close = drm_gem_vm_close,
 484 };
 485
 486 static struct drm_driver driver = {
 487         /* don't use mtrr's here, the Xserver or user space app should
 488          * deal with them for intel hardware.
 489          */
 490         .driver_features =
 491             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 492             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 493         .load = i915_driver_load,
 494         .unload = i915_driver_unload,
 495         .open = i915_driver_open,
 496         .lastclose = i915_driver_lastclose,
 497         .preclose = i915_driver_preclose,
 498         .postclose = i915_driver_postclose,
 499
 500         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 501         .suspend = i915_suspend,
 502         .resume = i915_resume,
 503
 504         .device_is_agp = i915_driver_device_is_agp,
 505         .enable_vblank = i915_enable_vblank,
 506         .disable_vblank = i915_disable_vblank,
 507         .irq_preinstall = i915_driver_irq_preinstall,
 508         .irq_postinstall = i915_driver_irq_postinstall,
 509         .irq_uninstall = i915_driver_irq_uninstall,
 510         .irq_handler = i915_driver_irq_handler,
 511         .reclaim_buffers = drm_core_reclaim_buffers,
 512         .get_map_ofs = drm_core_get_map_ofs,
 513         .get_reg_ofs = drm_core_get_reg_ofs,
 514         .master_create = i915_master_create,
 515         .master_destroy = i915_master_destroy,
 516 #if defined(CONFIG_DEBUG_FS)
 517         .debugfs_init = i915_debugfs_init,
 518         .debugfs_cleanup = i915_debugfs_cleanup,
 519 #endif
 520         .gem_init_object = i915_gem_init_object,
 521         .gem_free_object = i915_gem_free_object,
 522         .gem_vm_ops = &i915_gem_vm_ops,
 523         .ioctls = i915_ioctls,
 524         .fops = {
 525                  .owner = THIS_MODULE,
 526                  .open = drm_open,
 527                  .release = drm_release,
 528                  .unlocked_ioctl = drm_ioctl,
 529                  .mmap = drm_gem_mmap,
 530                  .poll = drm_poll,
 531                  .fasync = drm_fasync,
 532                  .read = drm_read,
 533 #ifdef CONFIG_COMPAT
 534                  .compat_ioctl = i915_compat_ioctl,
 535 #endif
 536         },
 537
 538         .pci_driver = {
 539                  .name = DRIVER_NAME,
 540                  .id_table = pciidlist,
 541                  .probe = i915_pci_probe,
 542                  .remove = i915_pci_remove,
 543                  .driver.pm = &i915_pm_ops,
 544         },
 545
 546         .name = DRIVER_NAME,
 547         .desc = DRIVER_DESC,
 548         .date = DRIVER_DATE,
 549         .major = DRIVER_MAJOR,
 550         .minor = DRIVER_MINOR,
 551         .patchlevel = DRIVER_PATCHLEVEL,
 552 };
 553
 554 static int __init i915_init(void)
 555 {
 556         driver.num_ioctls = i915_max_ioctl;
 557
 558         i915_gem_shrinker_init();
 559
 560         /*
 561          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 562          * explicitly disabled with the module pararmeter.
 563          *
 564          * Otherwise, just follow the parameter (defaulting to off).
 565          *
 566          * Allow optional vga_text_mode_force boot option to override
 567          * the default behavior.
 568          */
 569 #if defined(CONFIG_DRM_I915_KMS)
 570         if (i915_modeset != 0)
 571                 driver.driver_features |= DRIVER_MODESET;
 572 #endif
 573         if (i915_modeset == 1)
 574                 driver.driver_features |= DRIVER_MODESET;
 575
 576 #ifdef CONFIG_VGA_CONSOLE
 577         if (vgacon_text_force() && i915_modeset == -1)
 578                 driver.driver_features &= ~DRIVER_MODESET;
 579 #endif
 580
 581         if (!(driver.driver_features & DRIVER_MODESET)) {
 582                 driver.suspend = i915_suspend;
 583                 driver.resume = i915_resume;
 584         }
 585
 586         return drm_init(&driver);
 587 }
 588
 589 static void __exit i915_exit(void)
 590 {
 591         i915_gem_shrinker_exit();
 592         drm_exit(&driver);
 593 }
 594
 595 module_init(i915_init);
 596 module_exit(i915_exit);
 597
 598 MODULE_AUTHOR(DRIVER_AUTHOR);
 599 MODULE_DESCRIPTION(DRIVER_DESC);
 600 MODULE_LICENSE("GPL and additional rights");