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

   1 /*
   2  * Copyright (c) 2006-2008 Intel Corporation
   3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   4  * Copyright (c) 2008 Red Hat Inc.
   5  *
   6  * DRM core CRTC related functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Keith Packard
  28  *      Eric Anholt <eric@anholt.net>
  29  *      Dave Airlie <airlied@linux.ie>
  30  *      Jesse Barnes <jesse.barnes@intel.com>
  31  */
  32 #include <linux/list.h>
  33 #include "drm.h"
  34 #include "drmP.h"
  35 #include "drm_crtc.h"
  36
  37 struct drm_prop_enum_list {
  38         int type;
  39         char *name;
  40 };
  41
  42 /* Avoid boilerplate.  I'm tired of typing. */
  43 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  44         char *fnname(int val)                                   \
  45         {                                                       \
  46                 int i;                                          \
  47                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  48                         if (list[i].type == val)                \
  49                                 return list[i].name;            \
  50                 }                                               \
  51                 return "(unknown)";                             \
  52         }
  53
  54 /*
  55  * Global properties
  56  */
  57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  58 {       { DRM_MODE_DPMS_ON, "On" },
  59         { DRM_MODE_DPMS_STANDBY, "Standby" },
  60         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  61         { DRM_MODE_DPMS_OFF, "Off" }
  62 };
  63
  64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  65
  66 /*
  67  * Optional properties
  68  */
  69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  70 {
  71         { DRM_MODE_SCALE_NONE, "None" },
  72         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  73         { DRM_MODE_SCALE_CENTER, "Center" },
  74         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  75 };
  76
  77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  78 {
  79         { DRM_MODE_DITHERING_OFF, "Off" },
  80         { DRM_MODE_DITHERING_ON, "On" },
  81 };
  82
  83 /*
  84  * Non-global properties, but "required" for certain connectors.
  85  */
  86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  87 {
  88         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  89         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  90         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  91 };
  92
  93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  94
  95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
  96 {
  97         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
  98         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  99         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 100 };
 101
 102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 103                  drm_dvi_i_subconnector_enum_list)
 104
 105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 106 {
 107         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 108         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 109         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 110         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 111         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 112 };
 113
 114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 115
 116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 117 {
 118         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 119         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 120         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 121         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 122         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 123 };
 124
 125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 126                  drm_tv_subconnector_enum_list)
 127
 128 struct drm_conn_prop_enum_list {
 129         int type;
 130         char *name;
 131         int count;
 132 };
 133
 134 /*
 135  * Connector and encoder types.
 136  */
 137 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 138 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 139         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 140         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 141         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 142         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 143         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 144         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 145         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 146         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 147         { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
 148         { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
 149         { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
 150         { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
 151         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 152 };
 153
 154 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 155 {       { DRM_MODE_ENCODER_NONE, "None" },
 156         { DRM_MODE_ENCODER_DAC, "DAC" },
 157         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 158         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 159         { DRM_MODE_ENCODER_TVDAC, "TV" },
 160 };
 161
 162 char *drm_get_encoder_name(struct drm_encoder *encoder)
 163 {
 164         static char buf[32];
 165
 166         snprintf(buf, 32, "%s-%d",
 167                  drm_encoder_enum_list[encoder->encoder_type].name,
 168                  encoder->base.id);
 169         return buf;
 170 }
 171
 172 char *drm_get_connector_name(struct drm_connector *connector)
 173 {
 174         static char buf[32];
 175
 176         snprintf(buf, 32, "%s-%d",
 177                  drm_connector_enum_list[connector->connector_type].name,
 178                  connector->connector_type_id);
 179         return buf;
 180 }
 181 EXPORT_SYMBOL(drm_get_connector_name);
 182
 183 char *drm_get_connector_status_name(enum drm_connector_status status)
 184 {
 185         if (status == connector_status_connected)
 186                 return "connected";
 187         else if (status == connector_status_disconnected)
 188                 return "disconnected";
 189         else
 190                 return "unknown";
 191 }
 192
 193 /**
 194  * drm_mode_object_get - allocate a new identifier
 195  * @dev: DRM device
 196  * @ptr: object pointer, used to generate unique ID
 197  * @type: object type
 198  *
 199  * LOCKING:
 200  *
 201  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 202  * for tracking modes, CRTCs and connectors.
 203  *
 204  * RETURNS:
 205  * New unique (relative to other objects in @dev) integer identifier for the
 206  * object.
 207  */
 208 static int drm_mode_object_get(struct drm_device *dev,
 209                                struct drm_mode_object *obj, uint32_t obj_type)
 210 {
 211         int new_id = 0;
 212         int ret;
 213
 214 again:
 215         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 216                 DRM_ERROR("Ran out memory getting a mode number\n");
 217                 return -EINVAL;
 218         }
 219
 220         mutex_lock(&dev->mode_config.idr_mutex);
 221         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 222         mutex_unlock(&dev->mode_config.idr_mutex);
 223         if (ret == -EAGAIN)
 224                 goto again;
 225
 226         obj->id = new_id;
 227         obj->type = obj_type;
 228         return 0;
 229 }
 230
 231 /**
 232  * drm_mode_object_put - free an identifer
 233  * @dev: DRM device
 234  * @id: ID to free
 235  *
 236  * LOCKING:
 237  * Caller must hold DRM mode_config lock.
 238  *
 239  * Free @id from @dev's unique identifier pool.
 240  */
 241 static void drm_mode_object_put(struct drm_device *dev,
 242                                 struct drm_mode_object *object)
 243 {
 244         mutex_lock(&dev->mode_config.idr_mutex);
 245         idr_remove(&dev->mode_config.crtc_idr, object->id);
 246         mutex_unlock(&dev->mode_config.idr_mutex);
 247 }
 248
 249 void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
 250 {
 251         struct drm_mode_object *obj = NULL;
 252
 253         mutex_lock(&dev->mode_config.idr_mutex);
 254         obj = idr_find(&dev->mode_config.crtc_idr, id);
 255         if (!obj || (obj->type != type) || (obj->id != id))
 256                 obj = NULL;
 257         mutex_unlock(&dev->mode_config.idr_mutex);
 258
 259         return obj;
 260 }
 261 EXPORT_SYMBOL(drm_mode_object_find);
 262
 263 /**
 264  * drm_framebuffer_init - initialize a framebuffer
 265  * @dev: DRM device
 266  *
 267  * LOCKING:
 268  * Caller must hold mode config lock.
 269  *
 270  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 271  * functions & device file and adds it to the master fd list.
 272  *
 273  * RETURNS:
 274  * Zero on success, error code on falure.
 275  */
 276 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 277                          const struct drm_framebuffer_funcs *funcs)
 278 {
 279         int ret;
 280
 281         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 282         if (ret) {
 283                 return ret;
 284         }
 285
 286         fb->dev = dev;
 287         fb->funcs = funcs;
 288         dev->mode_config.num_fb++;
 289         list_add(&fb->head, &dev->mode_config.fb_list);
 290
 291         return 0;
 292 }
 293 EXPORT_SYMBOL(drm_framebuffer_init);
 294
 295 /**
 296  * drm_framebuffer_cleanup - remove a framebuffer object
 297  * @fb: framebuffer to remove
 298  *
 299  * LOCKING:
 300  * Caller must hold mode config lock.
 301  *
 302  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 303  * it, setting it to NULL.
 304  */
 305 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 306 {
 307         struct drm_device *dev = fb->dev;
 308         struct drm_crtc *crtc;
 309         struct drm_mode_set set;
 310         int ret;
 311
 312         /* remove from any CRTC */
 313         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 314                 if (crtc->fb == fb) {
 315                         /* should turn off the crtc */
 316                         memset(&set, 0, sizeof(struct drm_mode_set));
 317                         set.crtc = crtc;
 318                         set.fb = NULL;
 319                         ret = crtc->funcs->set_config(&set);
 320                         if (ret)
 321                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 322                 }
 323         }
 324
 325         drm_mode_object_put(dev, &fb->base);
 326         list_del(&fb->head);
 327         dev->mode_config.num_fb--;
 328 }
 329 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 330
 331 /**
 332  * drm_crtc_init - Initialise a new CRTC object
 333  * @dev: DRM device
 334  * @crtc: CRTC object to init
 335  * @funcs: callbacks for the new CRTC
 336  *
 337  * LOCKING:
 338  * Caller must hold mode config lock.
 339  *
 340  * Inits a new object created as base part of an driver crtc object.
 341  */
 342 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 343                    const struct drm_crtc_funcs *funcs)
 344 {
 345         crtc->dev = dev;
 346         crtc->funcs = funcs;
 347
 348         mutex_lock(&dev->mode_config.mutex);
 349         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 350
 351         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 352         dev->mode_config.num_crtc++;
 353         mutex_unlock(&dev->mode_config.mutex);
 354 }
 355 EXPORT_SYMBOL(drm_crtc_init);
 356
 357 /**
 358  * drm_crtc_cleanup - Cleans up the core crtc usage.
 359  * @crtc: CRTC to cleanup
 360  *
 361  * LOCKING:
 362  * Caller must hold mode config lock.
 363  *
 364  * Cleanup @crtc. Removes from drm modesetting space
 365  * does NOT free object, caller does that.
 366  */
 367 void drm_crtc_cleanup(struct drm_crtc *crtc)
 368 {
 369         struct drm_device *dev = crtc->dev;
 370
 371         if (crtc->gamma_store) {
 372                 kfree(crtc->gamma_store);
 373                 crtc->gamma_store = NULL;
 374         }
 375
 376         drm_mode_object_put(dev, &crtc->base);
 377         list_del(&crtc->head);
 378         dev->mode_config.num_crtc--;
 379 }
 380 EXPORT_SYMBOL(drm_crtc_cleanup);
 381
 382 /**
 383  * drm_mode_probed_add - add a mode to a connector's probed mode list
 384  * @connector: connector the new mode
 385  * @mode: mode data
 386  *
 387  * LOCKING:
 388  * Caller must hold mode config lock.
 389  *
 390  * Add @mode to @connector's mode list for later use.
 391  */
 392 void drm_mode_probed_add(struct drm_connector *connector,
 393                          struct drm_display_mode *mode)
 394 {
 395         list_add(&mode->head, &connector->probed_modes);
 396 }
 397 EXPORT_SYMBOL(drm_mode_probed_add);
 398
 399 /**
 400  * drm_mode_remove - remove and free a mode
 401  * @connector: connector list to modify
 402  * @mode: mode to remove
 403  *
 404  * LOCKING:
 405  * Caller must hold mode config lock.
 406  *
 407  * Remove @mode from @connector's mode list, then free it.
 408  */
 409 void drm_mode_remove(struct drm_connector *connector,
 410                      struct drm_display_mode *mode)
 411 {
 412         list_del(&mode->head);
 413         kfree(mode);
 414 }
 415 EXPORT_SYMBOL(drm_mode_remove);
 416
 417 /**
 418  * drm_connector_init - Init a preallocated connector
 419  * @dev: DRM device
 420  * @connector: the connector to init
 421  * @funcs: callbacks for this connector
 422  * @name: user visible name of the connector
 423  *
 424  * LOCKING:
 425  * Caller must hold @dev's mode_config lock.
 426  *
 427  * Initialises a preallocated connector. Connectors should be
 428  * subclassed as part of driver connector objects.
 429  */
 430 void drm_connector_init(struct drm_device *dev,
 431                      struct drm_connector *connector,
 432                      const struct drm_connector_funcs *funcs,
 433                      int connector_type)
 434 {
 435         mutex_lock(&dev->mode_config.mutex);
 436
 437         connector->dev = dev;
 438         connector->funcs = funcs;
 439         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 440         connector->connector_type = connector_type;
 441         connector->connector_type_id =
 442                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 443         INIT_LIST_HEAD(&connector->user_modes);
 444         INIT_LIST_HEAD(&connector->probed_modes);
 445         INIT_LIST_HEAD(&connector->modes);
 446         connector->edid_blob_ptr = NULL;
 447
 448         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 449         dev->mode_config.num_connector++;
 450
 451         drm_connector_attach_property(connector,
 452                                       dev->mode_config.edid_property, 0);
 453
 454         drm_connector_attach_property(connector,
 455                                       dev->mode_config.dpms_property, 0);
 456
 457         mutex_unlock(&dev->mode_config.mutex);
 458 }
 459 EXPORT_SYMBOL(drm_connector_init);
 460
 461 /**
 462  * drm_connector_cleanup - cleans up an initialised connector
 463  * @connector: connector to cleanup
 464  *
 465  * LOCKING:
 466  * Caller must hold @dev's mode_config lock.
 467  *
 468  * Cleans up the connector but doesn't free the object.
 469  */
 470 void drm_connector_cleanup(struct drm_connector *connector)
 471 {
 472         struct drm_device *dev = connector->dev;
 473         struct drm_display_mode *mode, *t;
 474
 475         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 476                 drm_mode_remove(connector, mode);
 477
 478         list_for_each_entry_safe(mode, t, &connector->modes, head)
 479                 drm_mode_remove(connector, mode);
 480
 481         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 482                 drm_mode_remove(connector, mode);
 483
 484         mutex_lock(&dev->mode_config.mutex);
 485         drm_mode_object_put(dev, &connector->base);
 486         list_del(&connector->head);
 487         mutex_unlock(&dev->mode_config.mutex);
 488 }
 489 EXPORT_SYMBOL(drm_connector_cleanup);
 490
 491 void drm_encoder_init(struct drm_device *dev,
 492                       struct drm_encoder *encoder,
 493                       const struct drm_encoder_funcs *funcs,
 494                       int encoder_type)
 495 {
 496         mutex_lock(&dev->mode_config.mutex);
 497
 498         encoder->dev = dev;
 499
 500         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 501         encoder->encoder_type = encoder_type;
 502         encoder->funcs = funcs;
 503
 504         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 505         dev->mode_config.num_encoder++;
 506
 507         mutex_unlock(&dev->mode_config.mutex);
 508 }
 509 EXPORT_SYMBOL(drm_encoder_init);
 510
 511 void drm_encoder_cleanup(struct drm_encoder *encoder)
 512 {
 513         struct drm_device *dev = encoder->dev;
 514         mutex_lock(&dev->mode_config.mutex);
 515         drm_mode_object_put(dev, &encoder->base);
 516         list_del(&encoder->head);
 517         mutex_unlock(&dev->mode_config.mutex);
 518 }
 519 EXPORT_SYMBOL(drm_encoder_cleanup);
 520
 521 /**
 522  * drm_mode_create - create a new display mode
 523  * @dev: DRM device
 524  *
 525  * LOCKING:
 526  * Caller must hold DRM mode_config lock.
 527  *
 528  * Create a new drm_display_mode, give it an ID, and return it.
 529  *
 530  * RETURNS:
 531  * Pointer to new mode on success, NULL on error.
 532  */
 533 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 534 {
 535         struct drm_display_mode *nmode;
 536
 537         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 538         if (!nmode)
 539                 return NULL;
 540
 541         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 542         return nmode;
 543 }
 544 EXPORT_SYMBOL(drm_mode_create);
 545
 546 /**
 547  * drm_mode_destroy - remove a mode
 548  * @dev: DRM device
 549  * @mode: mode to remove
 550  *
 551  * LOCKING:
 552  * Caller must hold mode config lock.
 553  *
 554  * Free @mode's unique identifier, then free it.
 555  */
 556 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 557 {
 558         drm_mode_object_put(dev, &mode->base);
 559
 560         kfree(mode);
 561 }
 562 EXPORT_SYMBOL(drm_mode_destroy);
 563
 564 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 565 {
 566         struct drm_property *edid;
 567         struct drm_property *dpms;
 568         int i;
 569
 570         /*
 571          * Standard properties (apply to all connectors)
 572          */
 573         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 574                                    DRM_MODE_PROP_IMMUTABLE,
 575                                    "EDID", 0);
 576         dev->mode_config.edid_property = edid;
 577
 578         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 579                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 580         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 581                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 582                                       drm_dpms_enum_list[i].name);
 583         dev->mode_config.dpms_property = dpms;
 584
 585         return 0;
 586 }
 587
 588 /**
 589  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 590  * @dev: DRM device
 591  *
 592  * Called by a driver the first time a DVI-I connector is made.
 593  */
 594 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 595 {
 596         struct drm_property *dvi_i_selector;
 597         struct drm_property *dvi_i_subconnector;
 598         int i;
 599
 600         if (dev->mode_config.dvi_i_select_subconnector_property)
 601                 return 0;
 602
 603         dvi_i_selector =
 604                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 605                                     "select subconnector",
 606                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 607         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 608                 drm_property_add_enum(dvi_i_selector, i,
 609                                       drm_dvi_i_select_enum_list[i].type,
 610                                       drm_dvi_i_select_enum_list[i].name);
 611         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 612
 613         dvi_i_subconnector =
 614                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 615                                     DRM_MODE_PROP_IMMUTABLE,
 616                                     "subconnector",
 617                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 618         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 619                 drm_property_add_enum(dvi_i_subconnector, i,
 620                                       drm_dvi_i_subconnector_enum_list[i].type,
 621                                       drm_dvi_i_subconnector_enum_list[i].name);
 622         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 623
 624         return 0;
 625 }
 626 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 627
 628 /**
 629  * drm_create_tv_properties - create TV specific connector properties
 630  * @dev: DRM device
 631  * @num_modes: number of different TV formats (modes) supported
 632  * @modes: array of pointers to strings containing name of each format
 633  *
 634  * Called by a driver's TV initialization routine, this function creates
 635  * the TV specific connector properties for a given device.  Caller is
 636  * responsible for allocating a list of format names and passing them to
 637  * this routine.
 638  */
 639 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 640                                   char *modes[])
 641 {
 642         struct drm_property *tv_selector;
 643         struct drm_property *tv_subconnector;
 644         int i;
 645
 646         if (dev->mode_config.tv_select_subconnector_property)
 647                 return 0;
 648
 649         /*
 650          * Basic connector properties
 651          */
 652         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 653                                           "select subconnector",
 654                                           ARRAY_SIZE(drm_tv_select_enum_list));
 655         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 656                 drm_property_add_enum(tv_selector, i,
 657                                       drm_tv_select_enum_list[i].type,
 658                                       drm_tv_select_enum_list[i].name);
 659         dev->mode_config.tv_select_subconnector_property = tv_selector;
 660
 661         tv_subconnector =
 662                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 663                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 664                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 665         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 666                 drm_property_add_enum(tv_subconnector, i,
 667                                       drm_tv_subconnector_enum_list[i].type,
 668                                       drm_tv_subconnector_enum_list[i].name);
 669         dev->mode_config.tv_subconnector_property = tv_subconnector;
 670
 671         /*
 672          * Other, TV specific properties: margins & TV modes.
 673          */
 674         dev->mode_config.tv_left_margin_property =
 675                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 676                                     "left margin", 2);
 677         dev->mode_config.tv_left_margin_property->values[0] = 0;
 678         dev->mode_config.tv_left_margin_property->values[1] = 100;
 679
 680         dev->mode_config.tv_right_margin_property =
 681                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 682                                     "right margin", 2);
 683         dev->mode_config.tv_right_margin_property->values[0] = 0;
 684         dev->mode_config.tv_right_margin_property->values[1] = 100;
 685
 686         dev->mode_config.tv_top_margin_property =
 687                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 688                                     "top margin", 2);
 689         dev->mode_config.tv_top_margin_property->values[0] = 0;
 690         dev->mode_config.tv_top_margin_property->values[1] = 100;
 691
 692         dev->mode_config.tv_bottom_margin_property =
 693                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 694                                     "bottom margin", 2);
 695         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 696         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 697
 698         dev->mode_config.tv_mode_property =
 699                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 700                                     "mode", num_modes);
 701         for (i = 0; i < num_modes; i++)
 702                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 703                                       i, modes[i]);
 704
 705         dev->mode_config.tv_brightness_property =
 706                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 707                                     "brightness", 2);
 708         dev->mode_config.tv_brightness_property->values[0] = 0;
 709         dev->mode_config.tv_brightness_property->values[1] = 100;
 710
 711         dev->mode_config.tv_contrast_property =
 712                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 713                                     "contrast", 2);
 714         dev->mode_config.tv_contrast_property->values[0] = 0;
 715         dev->mode_config.tv_contrast_property->values[1] = 100;
 716
 717         dev->mode_config.tv_flicker_reduction_property =
 718                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 719                                     "flicker reduction", 2);
 720         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 721         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 722
 723         dev->mode_config.tv_overscan_property =
 724                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 725                                     "overscan", 2);
 726         dev->mode_config.tv_overscan_property->values[0] = 0;
 727         dev->mode_config.tv_overscan_property->values[1] = 100;
 728
 729         dev->mode_config.tv_saturation_property =
 730                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 731                                     "saturation", 2);
 732         dev->mode_config.tv_saturation_property->values[0] = 0;
 733         dev->mode_config.tv_saturation_property->values[1] = 100;
 734
 735         dev->mode_config.tv_hue_property =
 736                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 737                                     "hue", 2);
 738         dev->mode_config.tv_hue_property->values[0] = 0;
 739         dev->mode_config.tv_hue_property->values[1] = 100;
 740
 741         return 0;
 742 }
 743 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 744
 745 /**
 746  * drm_mode_create_scaling_mode_property - create scaling mode property
 747  * @dev: DRM device
 748  *
 749  * Called by a driver the first time it's needed, must be attached to desired
 750  * connectors.
 751  */
 752 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 753 {
 754         struct drm_property *scaling_mode;
 755         int i;
 756
 757         if (dev->mode_config.scaling_mode_property)
 758                 return 0;
 759
 760         scaling_mode =
 761                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 762                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 763         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 764                 drm_property_add_enum(scaling_mode, i,
 765                                       drm_scaling_mode_enum_list[i].type,
 766                                       drm_scaling_mode_enum_list[i].name);
 767
 768         dev->mode_config.scaling_mode_property = scaling_mode;
 769
 770         return 0;
 771 }
 772 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 773
 774 /**
 775  * drm_mode_create_dithering_property - create dithering property
 776  * @dev: DRM device
 777  *
 778  * Called by a driver the first time it's needed, must be attached to desired
 779  * connectors.
 780  */
 781 int drm_mode_create_dithering_property(struct drm_device *dev)
 782 {
 783         struct drm_property *dithering_mode;
 784         int i;
 785
 786         if (dev->mode_config.dithering_mode_property)
 787                 return 0;
 788
 789         dithering_mode =
 790                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 791                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 792         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 793                 drm_property_add_enum(dithering_mode, i,
 794                                       drm_dithering_mode_enum_list[i].type,
 795                                       drm_dithering_mode_enum_list[i].name);
 796         dev->mode_config.dithering_mode_property = dithering_mode;
 797
 798         return 0;
 799 }
 800 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 801
 802 /**
 803  * drm_mode_config_init - initialize DRM mode_configuration structure
 804  * @dev: DRM device
 805  *
 806  * LOCKING:
 807  * None, should happen single threaded at init time.
 808  *
 809  * Initialize @dev's mode_config structure, used for tracking the graphics
 810  * configuration of @dev.
 811  */
 812 void drm_mode_config_init(struct drm_device *dev)
 813 {
 814         mutex_init(&dev->mode_config.mutex);
 815         mutex_init(&dev->mode_config.idr_mutex);
 816         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 817         INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
 818         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 819         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 820         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 821         INIT_LIST_HEAD(&dev->mode_config.property_list);
 822         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 823         idr_init(&dev->mode_config.crtc_idr);
 824
 825         mutex_lock(&dev->mode_config.mutex);
 826         drm_mode_create_standard_connector_properties(dev);
 827         mutex_unlock(&dev->mode_config.mutex);
 828
 829         /* Just to be sure */
 830         dev->mode_config.num_fb = 0;
 831         dev->mode_config.num_connector = 0;
 832         dev->mode_config.num_crtc = 0;
 833         dev->mode_config.num_encoder = 0;
 834 }
 835 EXPORT_SYMBOL(drm_mode_config_init);
 836
 837 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 838 {
 839         uint32_t total_objects = 0;
 840
 841         total_objects += dev->mode_config.num_crtc;
 842         total_objects += dev->mode_config.num_connector;
 843         total_objects += dev->mode_config.num_encoder;
 844
 845         if (total_objects == 0)
 846                 return -EINVAL;
 847
 848         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 849         if (!group->id_list)
 850                 return -ENOMEM;
 851
 852         group->num_crtcs = 0;
 853         group->num_connectors = 0;
 854         group->num_encoders = 0;
 855         return 0;
 856 }
 857
 858 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 859                                      struct drm_mode_group *group)
 860 {
 861         struct drm_crtc *crtc;
 862         struct drm_encoder *encoder;
 863         struct drm_connector *connector;
 864         int ret;
 865
 866         if ((ret = drm_mode_group_init(dev, group)))
 867                 return ret;
 868
 869         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 870                 group->id_list[group->num_crtcs++] = crtc->base.id;
 871
 872         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 873                 group->id_list[group->num_crtcs + group->num_encoders++] =
 874                 encoder->base.id;
 875
 876         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 877                 group->id_list[group->num_crtcs + group->num_encoders +
 878                                group->num_connectors++] = connector->base.id;
 879
 880         return 0;
 881 }
 882
 883 /**
 884  * drm_mode_config_cleanup - free up DRM mode_config info
 885  * @dev: DRM device
 886  *
 887  * LOCKING:
 888  * Caller must hold mode config lock.
 889  *
 890  * Free up all the connectors and CRTCs associated with this DRM device, then
 891  * free up the framebuffers and associated buffer objects.
 892  *
 893  * FIXME: cleanup any dangling user buffer objects too
 894  */
 895 void drm_mode_config_cleanup(struct drm_device *dev)
 896 {
 897         struct drm_connector *connector, *ot;
 898         struct drm_crtc *crtc, *ct;
 899         struct drm_encoder *encoder, *enct;
 900         struct drm_framebuffer *fb, *fbt;
 901         struct drm_property *property, *pt;
 902
 903         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 904                                  head) {
 905                 encoder->funcs->destroy(encoder);
 906         }
 907
 908         list_for_each_entry_safe(connector, ot,
 909                                  &dev->mode_config.connector_list, head) {
 910                 connector->funcs->destroy(connector);
 911         }
 912
 913         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 914                                  head) {
 915                 drm_property_destroy(dev, property);
 916         }
 917
 918         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 919                 fb->funcs->destroy(fb);
 920         }
 921
 922         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 923                 crtc->funcs->destroy(crtc);
 924         }
 925
 926 }
 927 EXPORT_SYMBOL(drm_mode_config_cleanup);
 928
 929 /**
 930  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 931  * @out: drm_mode_modeinfo struct to return to the user
 932  * @in: drm_display_mode to use
 933  *
 934  * LOCKING:
 935  * None.
 936  *
 937  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 938  * the user.
 939  */
 940 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 941                                struct drm_display_mode *in)
 942 {
 943         out->clock = in->clock;
 944         out->hdisplay = in->hdisplay;
 945         out->hsync_start = in->hsync_start;
 946         out->hsync_end = in->hsync_end;
 947         out->htotal = in->htotal;
 948         out->hskew = in->hskew;
 949         out->vdisplay = in->vdisplay;
 950         out->vsync_start = in->vsync_start;
 951         out->vsync_end = in->vsync_end;
 952         out->vtotal = in->vtotal;
 953         out->vscan = in->vscan;
 954         out->vrefresh = in->vrefresh;
 955         out->flags = in->flags;
 956         out->type = in->type;
 957         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
 958         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
 959 }
 960
 961 /**
 962  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
 963  * @out: drm_display_mode to return to the user
 964  * @in: drm_mode_modeinfo to use
 965  *
 966  * LOCKING:
 967  * None.
 968  *
 969  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
 970  * the caller.
 971  */
 972 void drm_crtc_convert_umode(struct drm_display_mode *out,
 973                             struct drm_mode_modeinfo *in)
 974 {
 975         out->clock = in->clock;
 976         out->hdisplay = in->hdisplay;
 977         out->hsync_start = in->hsync_start;
 978         out->hsync_end = in->hsync_end;
 979         out->htotal = in->htotal;
 980         out->hskew = in->hskew;
 981         out->vdisplay = in->vdisplay;
 982         out->vsync_start = in->vsync_start;
 983         out->vsync_end = in->vsync_end;
 984         out->vtotal = in->vtotal;
 985         out->vscan = in->vscan;
 986         out->vrefresh = in->vrefresh;
 987         out->flags = in->flags;
 988         out->type = in->type;
 989         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
 990         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
 991 }
 992
 993 /**
 994  * drm_mode_getresources - get graphics configuration
 995  * @inode: inode from the ioctl
 996  * @filp: file * from the ioctl
 997  * @cmd: cmd from ioctl
 998  * @arg: arg from ioctl
 999  *
1000  * LOCKING:
1001  * Takes mode config lock.
1002  *
1003  * Construct a set of configuration description structures and return
1004  * them to the user, including CRTC, connector and framebuffer configuration.
1005  *
1006  * Called by the user via ioctl.
1007  *
1008  * RETURNS:
1009  * Zero on success, errno on failure.
1010  */
1011 int drm_mode_getresources(struct drm_device *dev, void *data,
1012                           struct drm_file *file_priv)
1013 {
1014         struct drm_mode_card_res *card_res = data;
1015         struct list_head *lh;
1016         struct drm_framebuffer *fb;
1017         struct drm_connector *connector;
1018         struct drm_crtc *crtc;
1019         struct drm_encoder *encoder;
1020         int ret = 0;
1021         int connector_count = 0;
1022         int crtc_count = 0;
1023         int fb_count = 0;
1024         int encoder_count = 0;
1025         int copied = 0, i;
1026         uint32_t __user *fb_id;
1027         uint32_t __user *crtc_id;
1028         uint32_t __user *connector_id;
1029         uint32_t __user *encoder_id;
1030         struct drm_mode_group *mode_group;
1031
1032         mutex_lock(&dev->mode_config.mutex);
1033
1034         /*
1035          * For the non-control nodes we need to limit the list of resources
1036          * by IDs in the group list for this node
1037          */
1038         list_for_each(lh, &file_priv->fbs)
1039                 fb_count++;
1040
1041         mode_group = &file_priv->master->minor->mode_group;
1042         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1043
1044                 list_for_each(lh, &dev->mode_config.crtc_list)
1045                         crtc_count++;
1046
1047                 list_for_each(lh, &dev->mode_config.connector_list)
1048                         connector_count++;
1049
1050                 list_for_each(lh, &dev->mode_config.encoder_list)
1051                         encoder_count++;
1052         } else {
1053
1054                 crtc_count = mode_group->num_crtcs;
1055                 connector_count = mode_group->num_connectors;
1056                 encoder_count = mode_group->num_encoders;
1057         }
1058
1059         card_res->max_height = dev->mode_config.max_height;
1060         card_res->min_height = dev->mode_config.min_height;
1061         card_res->max_width = dev->mode_config.max_width;
1062         card_res->min_width = dev->mode_config.min_width;
1063
1064         /* handle this in 4 parts */
1065         /* FBs */
1066         if (card_res->count_fbs >= fb_count) {
1067                 copied = 0;
1068                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1069                 list_for_each_entry(fb, &file_priv->fbs, head) {
1070                         if (put_user(fb->base.id, fb_id + copied)) {
1071                                 ret = -EFAULT;
1072                                 goto out;
1073                         }
1074                         copied++;
1075                 }
1076         }
1077         card_res->count_fbs = fb_count;
1078
1079         /* CRTCs */
1080         if (card_res->count_crtcs >= crtc_count) {
1081                 copied = 0;
1082                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1083                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1084                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1085                                             head) {
1086                                 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1087                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1088                                         ret = -EFAULT;
1089                                         goto out;
1090                                 }
1091                                 copied++;
1092                         }
1093                 } else {
1094                         for (i = 0; i < mode_group->num_crtcs; i++) {
1095                                 if (put_user(mode_group->id_list[i],
1096                                              crtc_id + copied)) {
1097                                         ret = -EFAULT;
1098                                         goto out;
1099                                 }
1100                                 copied++;
1101                         }
1102                 }
1103         }
1104         card_res->count_crtcs = crtc_count;
1105
1106         /* Encoders */
1107         if (card_res->count_encoders >= encoder_count) {
1108                 copied = 0;
1109                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1110                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1111                         list_for_each_entry(encoder,
1112                                             &dev->mode_config.encoder_list,
1113                                             head) {
1114                                 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1115                                           encoder->base.id);
1116                                 if (put_user(encoder->base.id, encoder_id +
1117                                              copied)) {
1118                                         ret = -EFAULT;
1119                                         goto out;
1120                                 }
1121                                 copied++;
1122                         }
1123                 } else {
1124                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1125                                 if (put_user(mode_group->id_list[i],
1126                                              encoder_id + copied)) {
1127                                         ret = -EFAULT;
1128                                         goto out;
1129                                 }
1130                                 copied++;
1131                         }
1132
1133                 }
1134         }
1135         card_res->count_encoders = encoder_count;
1136
1137         /* Connectors */
1138         if (card_res->count_connectors >= connector_count) {
1139                 copied = 0;
1140                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1141                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1142                         list_for_each_entry(connector,
1143                                             &dev->mode_config.connector_list,
1144                                             head) {
1145                                 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1146                                           connector->base.id);
1147                                 if (put_user(connector->base.id,
1148                                              connector_id + copied)) {
1149                                         ret = -EFAULT;
1150                                         goto out;
1151                                 }
1152                                 copied++;
1153                         }
1154                 } else {
1155                         int start = mode_group->num_crtcs +
1156                                 mode_group->num_encoders;
1157                         for (i = start; i < start + mode_group->num_connectors; i++) {
1158                                 if (put_user(mode_group->id_list[i],
1159                                              connector_id + copied)) {
1160                                         ret = -EFAULT;
1161                                         goto out;
1162                                 }
1163                                 copied++;
1164                         }
1165                 }
1166         }
1167         card_res->count_connectors = connector_count;
1168
1169         DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1170                   card_res->count_connectors, card_res->count_encoders);
1171
1172 out:
1173         mutex_unlock(&dev->mode_config.mutex);
1174         return ret;
1175 }
1176
1177 /**
1178  * drm_mode_getcrtc - get CRTC configuration
1179  * @inode: inode from the ioctl
1180  * @filp: file * from the ioctl
1181  * @cmd: cmd from ioctl
1182  * @arg: arg from ioctl
1183  *
1184  * LOCKING:
1185  * Caller? (FIXME)
1186  *
1187  * Construct a CRTC configuration structure to return to the user.
1188  *
1189  * Called by the user via ioctl.
1190  *
1191  * RETURNS:
1192  * Zero on success, errno on failure.
1193  */
1194 int drm_mode_getcrtc(struct drm_device *dev,
1195                      void *data, struct drm_file *file_priv)
1196 {
1197         struct drm_mode_crtc *crtc_resp = data;
1198         struct drm_crtc *crtc;
1199         struct drm_mode_object *obj;
1200         int ret = 0;
1201
1202         mutex_lock(&dev->mode_config.mutex);
1203
1204         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1205                                    DRM_MODE_OBJECT_CRTC);
1206         if (!obj) {
1207                 ret = -EINVAL;
1208                 goto out;
1209         }
1210         crtc = obj_to_crtc(obj);
1211
1212         crtc_resp->x = crtc->x;
1213         crtc_resp->y = crtc->y;
1214         crtc_resp->gamma_size = crtc->gamma_size;
1215         if (crtc->fb)
1216                 crtc_resp->fb_id = crtc->fb->base.id;
1217         else
1218                 crtc_resp->fb_id = 0;
1219
1220         if (crtc->enabled) {
1221
1222                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1223                 crtc_resp->mode_valid = 1;
1224
1225         } else {
1226                 crtc_resp->mode_valid = 0;
1227         }
1228
1229 out:
1230         mutex_unlock(&dev->mode_config.mutex);
1231         return ret;
1232 }
1233
1234 /**
1235  * drm_mode_getconnector - get connector configuration
1236  * @inode: inode from the ioctl
1237  * @filp: file * from the ioctl
1238  * @cmd: cmd from ioctl
1239  * @arg: arg from ioctl
1240  *
1241  * LOCKING:
1242  * Caller? (FIXME)
1243  *
1244  * Construct a connector configuration structure to return to the user.
1245  *
1246  * Called by the user via ioctl.
1247  *
1248  * RETURNS:
1249  * Zero on success, errno on failure.
1250  */
1251 int drm_mode_getconnector(struct drm_device *dev, void *data,
1252                           struct drm_file *file_priv)
1253 {
1254         struct drm_mode_get_connector *out_resp = data;
1255         struct drm_mode_object *obj;
1256         struct drm_connector *connector;
1257         struct drm_display_mode *mode;
1258         int mode_count = 0;
1259         int props_count = 0;
1260         int encoders_count = 0;
1261         int ret = 0;
1262         int copied = 0;
1263         int i;
1264         struct drm_mode_modeinfo u_mode;
1265         struct drm_mode_modeinfo __user *mode_ptr;
1266         uint32_t __user *prop_ptr;
1267         uint64_t __user *prop_values;
1268         uint32_t __user *encoder_ptr;
1269
1270         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1271
1272         DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1273
1274         mutex_lock(&dev->mode_config.mutex);
1275
1276         obj = drm_mode_object_find(dev, out_resp->connector_id,
1277                                    DRM_MODE_OBJECT_CONNECTOR);
1278         if (!obj) {
1279                 ret = -EINVAL;
1280                 goto out;
1281         }
1282         connector = obj_to_connector(obj);
1283
1284         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1285                 if (connector->property_ids[i] != 0) {
1286                         props_count++;
1287                 }
1288         }
1289
1290         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1291                 if (connector->encoder_ids[i] != 0) {
1292                         encoders_count++;
1293                 }
1294         }
1295
1296         if (out_resp->count_modes == 0) {
1297                 connector->funcs->fill_modes(connector,
1298                                              dev->mode_config.max_width,
1299                                              dev->mode_config.max_height);
1300         }
1301
1302         /* delayed so we get modes regardless of pre-fill_modes state */
1303         list_for_each_entry(mode, &connector->modes, head)
1304                 mode_count++;
1305
1306         out_resp->connector_id = connector->base.id;
1307         out_resp->connector_type = connector->connector_type;
1308         out_resp->connector_type_id = connector->connector_type_id;
1309         out_resp->mm_width = connector->display_info.width_mm;
1310         out_resp->mm_height = connector->display_info.height_mm;
1311         out_resp->subpixel = connector->display_info.subpixel_order;
1312         out_resp->connection = connector->status;
1313         if (connector->encoder)
1314                 out_resp->encoder_id = connector->encoder->base.id;
1315         else
1316                 out_resp->encoder_id = 0;
1317
1318         /*
1319          * This ioctl is called twice, once to determine how much space is
1320          * needed, and the 2nd time to fill it.
1321          */
1322         if ((out_resp->count_modes >= mode_count) && mode_count) {
1323                 copied = 0;
1324                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1325                 list_for_each_entry(mode, &connector->modes, head) {
1326                         drm_crtc_convert_to_umode(&u_mode, mode);
1327                         if (copy_to_user(mode_ptr + copied,
1328                                          &u_mode, sizeof(u_mode))) {
1329                                 ret = -EFAULT;
1330                                 goto out;
1331                         }
1332                         copied++;
1333                 }
1334         }
1335         out_resp->count_modes = mode_count;
1336
1337         if ((out_resp->count_props >= props_count) && props_count) {
1338                 copied = 0;
1339                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1340                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1341                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1342                         if (connector->property_ids[i] != 0) {
1343                                 if (put_user(connector->property_ids[i],
1344                                              prop_ptr + copied)) {
1345                                         ret = -EFAULT;
1346                                         goto out;
1347                                 }
1348
1349                                 if (put_user(connector->property_values[i],
1350                                              prop_values + copied)) {
1351                                         ret = -EFAULT;
1352                                         goto out;
1353                                 }
1354                                 copied++;
1355                         }
1356                 }
1357         }
1358         out_resp->count_props = props_count;
1359
1360         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1361                 copied = 0;
1362                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1363                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1364                         if (connector->encoder_ids[i] != 0) {
1365                                 if (put_user(connector->encoder_ids[i],
1366                                              encoder_ptr + copied)) {
1367                                         ret = -EFAULT;
1368                                         goto out;
1369                                 }
1370                                 copied++;
1371                         }
1372                 }
1373         }
1374         out_resp->count_encoders = encoders_count;
1375
1376 out:
1377         mutex_unlock(&dev->mode_config.mutex);
1378         return ret;
1379 }
1380
1381 int drm_mode_getencoder(struct drm_device *dev, void *data,
1382                         struct drm_file *file_priv)
1383 {
1384         struct drm_mode_get_encoder *enc_resp = data;
1385         struct drm_mode_object *obj;
1386         struct drm_encoder *encoder;
1387         int ret = 0;
1388
1389         mutex_lock(&dev->mode_config.mutex);
1390         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1391                                    DRM_MODE_OBJECT_ENCODER);
1392         if (!obj) {
1393                 ret = -EINVAL;
1394                 goto out;
1395         }
1396         encoder = obj_to_encoder(obj);
1397
1398         if (encoder->crtc)
1399                 enc_resp->crtc_id = encoder->crtc->base.id;
1400         else
1401                 enc_resp->crtc_id = 0;
1402         enc_resp->encoder_type = encoder->encoder_type;
1403         enc_resp->encoder_id = encoder->base.id;
1404         enc_resp->possible_crtcs = encoder->possible_crtcs;
1405         enc_resp->possible_clones = encoder->possible_clones;
1406
1407 out:
1408         mutex_unlock(&dev->mode_config.mutex);
1409         return ret;
1410 }
1411
1412 /**
1413  * drm_mode_setcrtc - set CRTC configuration
1414  * @inode: inode from the ioctl
1415  * @filp: file * from the ioctl
1416  * @cmd: cmd from ioctl
1417  * @arg: arg from ioctl
1418  *
1419  * LOCKING:
1420  * Caller? (FIXME)
1421  *
1422  * Build a new CRTC configuration based on user request.
1423  *
1424  * Called by the user via ioctl.
1425  *
1426  * RETURNS:
1427  * Zero on success, errno on failure.
1428  */
1429 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1430                      struct drm_file *file_priv)
1431 {
1432         struct drm_mode_config *config = &dev->mode_config;
1433         struct drm_mode_crtc *crtc_req = data;
1434         struct drm_mode_object *obj;
1435         struct drm_crtc *crtc, *crtcfb;
1436         struct drm_connector **connector_set = NULL, *connector;
1437         struct drm_framebuffer *fb = NULL;
1438         struct drm_display_mode *mode = NULL;
1439         struct drm_mode_set set;
1440         uint32_t __user *set_connectors_ptr;
1441         int ret = 0;
1442         int i;
1443
1444         mutex_lock(&dev->mode_config.mutex);
1445         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1446                                    DRM_MODE_OBJECT_CRTC);
1447         if (!obj) {
1448                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1449                 ret = -EINVAL;
1450                 goto out;
1451         }
1452         crtc = obj_to_crtc(obj);
1453
1454         if (crtc_req->mode_valid) {
1455                 /* If we have a mode we need a framebuffer. */
1456                 /* If we pass -1, set the mode with the currently bound fb */
1457                 if (crtc_req->fb_id == -1) {
1458                         list_for_each_entry(crtcfb,
1459                                             &dev->mode_config.crtc_list, head) {
1460                                 if (crtcfb == crtc) {
1461                                         DRM_DEBUG_KMS("Using current fb for "
1462                                                         "setmode\n");
1463                                         fb = crtc->fb;
1464                                 }
1465                         }
1466                 } else {
1467                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1468                                                    DRM_MODE_OBJECT_FB);
1469                         if (!obj) {
1470                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1471                                                 crtc_req->fb_id);
1472                                 ret = -EINVAL;
1473                                 goto out;
1474                         }
1475                         fb = obj_to_fb(obj);
1476                 }
1477
1478                 mode = drm_mode_create(dev);
1479                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1480                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1481         }
1482
1483         if (crtc_req->count_connectors == 0 && mode) {
1484                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1485                 ret = -EINVAL;
1486                 goto out;
1487         }
1488
1489         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1490                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1491                           crtc_req->count_connectors);
1492                 ret = -EINVAL;
1493                 goto out;
1494         }
1495
1496         if (crtc_req->count_connectors > 0) {
1497                 u32 out_id;
1498
1499                 /* Avoid unbounded kernel memory allocation */
1500                 if (crtc_req->count_connectors > config->num_connector) {
1501                         ret = -EINVAL;
1502                         goto out;
1503                 }
1504
1505                 connector_set = kmalloc(crtc_req->count_connectors *
1506                                         sizeof(struct drm_connector *),
1507                                         GFP_KERNEL);
1508                 if (!connector_set) {
1509                         ret = -ENOMEM;
1510                         goto out;
1511                 }
1512
1513                 for (i = 0; i < crtc_req->count_connectors; i++) {
1514                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1515                         if (get_user(out_id, &set_connectors_ptr[i])) {
1516                                 ret = -EFAULT;
1517                                 goto out;
1518                         }
1519
1520                         obj = drm_mode_object_find(dev, out_id,
1521                                                    DRM_MODE_OBJECT_CONNECTOR);
1522                         if (!obj) {
1523                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1524                                                 out_id);
1525                                 ret = -EINVAL;
1526                                 goto out;
1527                         }
1528                         connector = obj_to_connector(obj);
1529
1530                         connector_set[i] = connector;
1531                 }
1532         }
1533
1534         set.crtc = crtc;
1535         set.x = crtc_req->x;
1536         set.y = crtc_req->y;
1537         set.mode = mode;
1538         set.connectors = connector_set;
1539         set.num_connectors = crtc_req->count_connectors;
1540         set.fb = fb;
1541         ret = crtc->funcs->set_config(&set);
1542
1543 out:
1544         kfree(connector_set);
1545         mutex_unlock(&dev->mode_config.mutex);
1546         return ret;
1547 }
1548
1549 int drm_mode_cursor_ioctl(struct drm_device *dev,
1550                         void *data, struct drm_file *file_priv)
1551 {
1552         struct drm_mode_cursor *req = data;
1553         struct drm_mode_object *obj;
1554         struct drm_crtc *crtc;
1555         int ret = 0;
1556
1557         DRM_DEBUG_KMS("\n");
1558
1559         if (!req->flags) {
1560                 DRM_ERROR("no operation set\n");
1561                 return -EINVAL;
1562         }
1563
1564         mutex_lock(&dev->mode_config.mutex);
1565         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1566         if (!obj) {
1567                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1568                 ret = -EINVAL;
1569                 goto out;
1570         }
1571         crtc = obj_to_crtc(obj);
1572
1573         if (req->flags & DRM_MODE_CURSOR_BO) {
1574                 if (!crtc->funcs->cursor_set) {
1575                         DRM_ERROR("crtc does not support cursor\n");
1576                         ret = -ENXIO;
1577                         goto out;
1578                 }
1579                 /* Turns off the cursor if handle is 0 */
1580                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1581                                               req->width, req->height);
1582         }
1583
1584         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1585                 if (crtc->funcs->cursor_move) {
1586                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1587                 } else {
1588                         DRM_ERROR("crtc does not support cursor\n");
1589                         ret = -EFAULT;
1590                         goto out;
1591                 }
1592         }
1593 out:
1594         mutex_unlock(&dev->mode_config.mutex);
1595         return ret;
1596 }
1597
1598 /**
1599  * drm_mode_addfb - add an FB to the graphics configuration
1600  * @inode: inode from the ioctl
1601  * @filp: file * from the ioctl
1602  * @cmd: cmd from ioctl
1603  * @arg: arg from ioctl
1604  *
1605  * LOCKING:
1606  * Takes mode config lock.
1607  *
1608  * Add a new FB to the specified CRTC, given a user request.
1609  *
1610  * Called by the user via ioctl.
1611  *
1612  * RETURNS:
1613  * Zero on success, errno on failure.
1614  */
1615 int drm_mode_addfb(struct drm_device *dev,
1616                    void *data, struct drm_file *file_priv)
1617 {
1618         struct drm_mode_fb_cmd *r = data;
1619         struct drm_mode_config *config = &dev->mode_config;
1620         struct drm_framebuffer *fb;
1621         int ret = 0;
1622
1623         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1624                 DRM_ERROR("mode new framebuffer width not within limits\n");
1625                 return -EINVAL;
1626         }
1627         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1628                 DRM_ERROR("mode new framebuffer height not within limits\n");
1629                 return -EINVAL;
1630         }
1631
1632         mutex_lock(&dev->mode_config.mutex);
1633
1634         /* TODO check buffer is sufficently large */
1635         /* TODO setup destructor callback */
1636
1637         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1638         if (!fb) {
1639                 DRM_ERROR("could not create framebuffer\n");
1640                 ret = -EINVAL;
1641                 goto out;
1642         }
1643
1644         r->fb_id = fb->base.id;
1645         list_add(&fb->filp_head, &file_priv->fbs);
1646
1647 out:
1648         mutex_unlock(&dev->mode_config.mutex);
1649         return ret;
1650 }
1651
1652 /**
1653  * drm_mode_rmfb - remove an FB from the configuration
1654  * @inode: inode from the ioctl
1655  * @filp: file * from the ioctl
1656  * @cmd: cmd from ioctl
1657  * @arg: arg from ioctl
1658  *
1659  * LOCKING:
1660  * Takes mode config lock.
1661  *
1662  * Remove the FB specified by the user.
1663  *
1664  * Called by the user via ioctl.
1665  *
1666  * RETURNS:
1667  * Zero on success, errno on failure.
1668  */
1669 int drm_mode_rmfb(struct drm_device *dev,
1670                    void *data, struct drm_file *file_priv)
1671 {
1672         struct drm_mode_object *obj;
1673         struct drm_framebuffer *fb = NULL;
1674         struct drm_framebuffer *fbl = NULL;
1675         uint32_t *id = data;
1676         int ret = 0;
1677         int found = 0;
1678
1679         mutex_lock(&dev->mode_config.mutex);
1680         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1681         /* TODO check that we realy get a framebuffer back. */
1682         if (!obj) {
1683                 DRM_ERROR("mode invalid framebuffer id\n");
1684                 ret = -EINVAL;
1685                 goto out;
1686         }
1687         fb = obj_to_fb(obj);
1688
1689         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1690                 if (fb == fbl)
1691                         found = 1;
1692
1693         if (!found) {
1694                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1695                 ret = -EINVAL;
1696                 goto out;
1697         }
1698
1699         /* TODO release all crtc connected to the framebuffer */
1700         /* TODO unhock the destructor from the buffer object */
1701
1702         list_del(&fb->filp_head);
1703         fb->funcs->destroy(fb);
1704
1705 out:
1706         mutex_unlock(&dev->mode_config.mutex);
1707         return ret;
1708 }
1709
1710 /**
1711  * drm_mode_getfb - get FB info
1712  * @inode: inode from the ioctl
1713  * @filp: file * from the ioctl
1714  * @cmd: cmd from ioctl
1715  * @arg: arg from ioctl
1716  *
1717  * LOCKING:
1718  * Caller? (FIXME)
1719  *
1720  * Lookup the FB given its ID and return info about it.
1721  *
1722  * Called by the user via ioctl.
1723  *
1724  * RETURNS:
1725  * Zero on success, errno on failure.
1726  */
1727 int drm_mode_getfb(struct drm_device *dev,
1728                    void *data, struct drm_file *file_priv)
1729 {
1730         struct drm_mode_fb_cmd *r = data;
1731         struct drm_mode_object *obj;
1732         struct drm_framebuffer *fb;
1733         int ret = 0;
1734
1735         mutex_lock(&dev->mode_config.mutex);
1736         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1737         if (!obj) {
1738                 DRM_ERROR("invalid framebuffer id\n");
1739                 ret = -EINVAL;
1740                 goto out;
1741         }
1742         fb = obj_to_fb(obj);
1743
1744         r->height = fb->height;
1745         r->width = fb->width;
1746         r->depth = fb->depth;
1747         r->bpp = fb->bits_per_pixel;
1748         r->pitch = fb->pitch;
1749         fb->funcs->create_handle(fb, file_priv, &r->handle);
1750
1751 out:
1752         mutex_unlock(&dev->mode_config.mutex);
1753         return ret;
1754 }
1755
1756 /**
1757  * drm_fb_release - remove and free the FBs on this file
1758  * @filp: file * from the ioctl
1759  *
1760  * LOCKING:
1761  * Takes mode config lock.
1762  *
1763  * Destroy all the FBs associated with @filp.
1764  *
1765  * Called by the user via ioctl.
1766  *
1767  * RETURNS:
1768  * Zero on success, errno on failure.
1769  */
1770 void drm_fb_release(struct drm_file *priv)
1771 {
1772         struct drm_device *dev = priv->minor->dev;
1773         struct drm_framebuffer *fb, *tfb;
1774
1775         mutex_lock(&dev->mode_config.mutex);
1776         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1777                 list_del(&fb->filp_head);
1778                 fb->funcs->destroy(fb);
1779         }
1780         mutex_unlock(&dev->mode_config.mutex);
1781 }
1782
1783 /**
1784  * drm_mode_attachmode - add a mode to the user mode list
1785  * @dev: DRM device
1786  * @connector: connector to add the mode to
1787  * @mode: mode to add
1788  *
1789  * Add @mode to @connector's user mode list.
1790  */
1791 static int drm_mode_attachmode(struct drm_device *dev,
1792                                struct drm_connector *connector,
1793                                struct drm_display_mode *mode)
1794 {
1795         int ret = 0;
1796
1797         list_add_tail(&mode->head, &connector->user_modes);
1798         return ret;
1799 }
1800
1801 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1802                              struct drm_display_mode *mode)
1803 {
1804         struct drm_connector *connector;
1805         int ret = 0;
1806         struct drm_display_mode *dup_mode;
1807         int need_dup = 0;
1808         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1809                 if (!connector->encoder)
1810                         break;
1811                 if (connector->encoder->crtc == crtc) {
1812                         if (need_dup)
1813                                 dup_mode = drm_mode_duplicate(dev, mode);
1814                         else
1815                                 dup_mode = mode;
1816                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1817                         if (ret)
1818                                 return ret;
1819                         need_dup = 1;
1820                 }
1821         }
1822         return 0;
1823 }
1824 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1825
1826 static int drm_mode_detachmode(struct drm_device *dev,
1827                                struct drm_connector *connector,
1828                                struct drm_display_mode *mode)
1829 {
1830         int found = 0;
1831         int ret = 0;
1832         struct drm_display_mode *match_mode, *t;
1833
1834         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1835                 if (drm_mode_equal(match_mode, mode)) {
1836                         list_del(&match_mode->head);
1837                         drm_mode_destroy(dev, match_mode);
1838                         found = 1;
1839                         break;
1840                 }
1841         }
1842
1843         if (!found)
1844                 ret = -EINVAL;
1845
1846         return ret;
1847 }
1848
1849 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1850 {
1851         struct drm_connector *connector;
1852
1853         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1854                 drm_mode_detachmode(dev, connector, mode);
1855         }
1856         return 0;
1857 }
1858 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1859
1860 /**
1861  * drm_fb_attachmode - Attach a user mode to an connector
1862  * @inode: inode from the ioctl
1863  * @filp: file * from the ioctl
1864  * @cmd: cmd from ioctl
1865  * @arg: arg from ioctl
1866  *
1867  * This attaches a user specified mode to an connector.
1868  * Called by the user via ioctl.
1869  *
1870  * RETURNS:
1871  * Zero on success, errno on failure.
1872  */
1873 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1874                               void *data, struct drm_file *file_priv)
1875 {
1876         struct drm_mode_mode_cmd *mode_cmd = data;
1877         struct drm_connector *connector;
1878         struct drm_display_mode *mode;
1879         struct drm_mode_object *obj;
1880         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1881         int ret = 0;
1882
1883         mutex_lock(&dev->mode_config.mutex);
1884
1885         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1886         if (!obj) {
1887                 ret = -EINVAL;
1888                 goto out;
1889         }
1890         connector = obj_to_connector(obj);
1891
1892         mode = drm_mode_create(dev);
1893         if (!mode) {
1894                 ret = -ENOMEM;
1895                 goto out;
1896         }
1897
1898         drm_crtc_convert_umode(mode, umode);
1899
1900         ret = drm_mode_attachmode(dev, connector, mode);
1901 out:
1902         mutex_unlock(&dev->mode_config.mutex);
1903         return ret;
1904 }
1905
1906
1907 /**
1908  * drm_fb_detachmode - Detach a user specified mode from an connector
1909  * @inode: inode from the ioctl
1910  * @filp: file * from the ioctl
1911  * @cmd: cmd from ioctl
1912  * @arg: arg from ioctl
1913  *
1914  * Called by the user via ioctl.
1915  *
1916  * RETURNS:
1917  * Zero on success, errno on failure.
1918  */
1919 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1920                               void *data, struct drm_file *file_priv)
1921 {
1922         struct drm_mode_object *obj;
1923         struct drm_mode_mode_cmd *mode_cmd = data;
1924         struct drm_connector *connector;
1925         struct drm_display_mode mode;
1926         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1927         int ret = 0;
1928
1929         mutex_lock(&dev->mode_config.mutex);
1930
1931         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1932         if (!obj) {
1933                 ret = -EINVAL;
1934                 goto out;
1935         }
1936         connector = obj_to_connector(obj);
1937
1938         drm_crtc_convert_umode(&mode, umode);
1939         ret = drm_mode_detachmode(dev, connector, &mode);
1940 out:
1941         mutex_unlock(&dev->mode_config.mutex);
1942         return ret;
1943 }
1944
1945 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1946                                          const char *name, int num_values)
1947 {
1948         struct drm_property *property = NULL;
1949
1950         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
1951         if (!property)
1952                 return NULL;
1953
1954         if (num_values) {
1955                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1956                 if (!property->values)
1957                         goto fail;
1958         }
1959
1960         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
1961         property->flags = flags;
1962         property->num_values = num_values;
1963         INIT_LIST_HEAD(&property->enum_blob_list);
1964
1965         if (name)
1966                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1967
1968         list_add_tail(&property->head, &dev->mode_config.property_list);
1969         return property;
1970 fail:
1971         kfree(property);
1972         return NULL;
1973 }
1974 EXPORT_SYMBOL(drm_property_create);
1975
1976 int drm_property_add_enum(struct drm_property *property, int index,
1977                           uint64_t value, const char *name)
1978 {
1979         struct drm_property_enum *prop_enum;
1980
1981         if (!(property->flags & DRM_MODE_PROP_ENUM))
1982                 return -EINVAL;
1983
1984         if (!list_empty(&property->enum_blob_list)) {
1985                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
1986                         if (prop_enum->value == value) {
1987                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1988                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1989                                 return 0;
1990                         }
1991                 }
1992         }
1993
1994         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1995         if (!prop_enum)
1996                 return -ENOMEM;
1997
1998         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1999         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2000         prop_enum->value = value;
2001
2002         property->values[index] = value;
2003         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2004         return 0;
2005 }
2006 EXPORT_SYMBOL(drm_property_add_enum);
2007
2008 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2009 {
2010         struct drm_property_enum *prop_enum, *pt;
2011
2012         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2013                 list_del(&prop_enum->head);
2014                 kfree(prop_enum);
2015         }
2016
2017         if (property->num_values)
2018                 kfree(property->values);
2019         drm_mode_object_put(dev, &property->base);
2020         list_del(&property->head);
2021         kfree(property);
2022 }
2023 EXPORT_SYMBOL(drm_property_destroy);
2024
2025 int drm_connector_attach_property(struct drm_connector *connector,
2026                                struct drm_property *property, uint64_t init_val)
2027 {
2028         int i;
2029
2030         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2031                 if (connector->property_ids[i] == 0) {
2032                         connector->property_ids[i] = property->base.id;
2033                         connector->property_values[i] = init_val;
2034                         break;
2035                 }
2036         }
2037
2038         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2039                 return -EINVAL;
2040         return 0;
2041 }
2042 EXPORT_SYMBOL(drm_connector_attach_property);
2043
2044 int drm_connector_property_set_value(struct drm_connector *connector,
2045                                   struct drm_property *property, uint64_t value)
2046 {
2047         int i;
2048
2049         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2050                 if (connector->property_ids[i] == property->base.id) {
2051                         connector->property_values[i] = value;
2052                         break;
2053                 }
2054         }
2055
2056         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2057                 return -EINVAL;
2058         return 0;
2059 }
2060 EXPORT_SYMBOL(drm_connector_property_set_value);
2061
2062 int drm_connector_property_get_value(struct drm_connector *connector,
2063                                   struct drm_property *property, uint64_t *val)
2064 {
2065         int i;
2066
2067         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2068                 if (connector->property_ids[i] == property->base.id) {
2069                         *val = connector->property_values[i];
2070                         break;
2071                 }
2072         }
2073
2074         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2075                 return -EINVAL;
2076         return 0;
2077 }
2078 EXPORT_SYMBOL(drm_connector_property_get_value);
2079
2080 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2081                                void *data, struct drm_file *file_priv)
2082 {
2083         struct drm_mode_object *obj;
2084         struct drm_mode_get_property *out_resp = data;
2085         struct drm_property *property;
2086         int enum_count = 0;
2087         int blob_count = 0;
2088         int value_count = 0;
2089         int ret = 0, i;
2090         int copied;
2091         struct drm_property_enum *prop_enum;
2092         struct drm_mode_property_enum __user *enum_ptr;
2093         struct drm_property_blob *prop_blob;
2094         uint32_t *blob_id_ptr;
2095         uint64_t __user *values_ptr;
2096         uint32_t __user *blob_length_ptr;
2097
2098         mutex_lock(&dev->mode_config.mutex);
2099         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2100         if (!obj) {
2101                 ret = -EINVAL;
2102                 goto done;
2103         }
2104         property = obj_to_property(obj);
2105
2106         if (property->flags & DRM_MODE_PROP_ENUM) {
2107                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2108                         enum_count++;
2109         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2110                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2111                         blob_count++;
2112         }
2113
2114         value_count = property->num_values;
2115
2116         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2117         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2118         out_resp->flags = property->flags;
2119
2120         if ((out_resp->count_values >= value_count) && value_count) {
2121                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2122                 for (i = 0; i < value_count; i++) {
2123                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2124                                 ret = -EFAULT;
2125                                 goto done;
2126                         }
2127                 }
2128         }
2129         out_resp->count_values = value_count;
2130
2131         if (property->flags & DRM_MODE_PROP_ENUM) {
2132                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2133                         copied = 0;
2134                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2135                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2136
2137                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2138                                         ret = -EFAULT;
2139                                         goto done;
2140                                 }
2141
2142                                 if (copy_to_user(&enum_ptr[copied].name,
2143                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2144                                         ret = -EFAULT;
2145                                         goto done;
2146                                 }
2147                                 copied++;
2148                         }
2149                 }
2150                 out_resp->count_enum_blobs = enum_count;
2151         }
2152
2153         if (property->flags & DRM_MODE_PROP_BLOB) {
2154                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2155                         copied = 0;
2156                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2157                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2158
2159                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2160                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2161                                         ret = -EFAULT;
2162                                         goto done;
2163                                 }
2164
2165                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2166                                         ret = -EFAULT;
2167                                         goto done;
2168                                 }
2169
2170                                 copied++;
2171                         }
2172                 }
2173                 out_resp->count_enum_blobs = blob_count;
2174         }
2175 done:
2176         mutex_unlock(&dev->mode_config.mutex);
2177         return ret;
2178 }
2179
2180 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2181                                                           void *data)
2182 {
2183         struct drm_property_blob *blob;
2184
2185         if (!length || !data)
2186                 return NULL;
2187
2188         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2189         if (!blob)
2190                 return NULL;
2191
2192         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2193         blob->length = length;
2194
2195         memcpy(blob->data, data, length);
2196
2197         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2198
2199         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2200         return blob;
2201 }
2202
2203 static void drm_property_destroy_blob(struct drm_device *dev,
2204                                struct drm_property_blob *blob)
2205 {
2206         drm_mode_object_put(dev, &blob->base);
2207         list_del(&blob->head);
2208         kfree(blob);
2209 }
2210
2211 int drm_mode_getblob_ioctl(struct drm_device *dev,
2212                            void *data, struct drm_file *file_priv)
2213 {
2214         struct drm_mode_object *obj;
2215         struct drm_mode_get_blob *out_resp = data;
2216         struct drm_property_blob *blob;
2217         int ret = 0;
2218         void *blob_ptr;
2219
2220         mutex_lock(&dev->mode_config.mutex);
2221         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2222         if (!obj) {
2223                 ret = -EINVAL;
2224                 goto done;
2225         }
2226         blob = obj_to_blob(obj);
2227
2228         if (out_resp->length == blob->length) {
2229                 blob_ptr = (void *)(unsigned long)out_resp->data;
2230                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2231                         ret = -EFAULT;
2232                         goto done;
2233                 }
2234         }
2235         out_resp->length = blob->length;
2236
2237 done:
2238         mutex_unlock(&dev->mode_config.mutex);
2239         return ret;
2240 }
2241
2242 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2243                                             struct edid *edid)
2244 {
2245         struct drm_device *dev = connector->dev;
2246         int ret = 0;
2247
2248         if (connector->edid_blob_ptr)
2249                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2250
2251         /* Delete edid, when there is none. */
2252         if (!edid) {
2253                 connector->edid_blob_ptr = NULL;
2254                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2255                 return ret;
2256         }
2257
2258         connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2259
2260         ret = drm_connector_property_set_value(connector,
2261                                                dev->mode_config.edid_property,
2262                                                connector->edid_blob_ptr->base.id);
2263
2264         return ret;
2265 }
2266 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2267
2268 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2269                                        void *data, struct drm_file *file_priv)
2270 {
2271         struct drm_mode_connector_set_property *out_resp = data;
2272         struct drm_mode_object *obj;
2273         struct drm_property *property;
2274         struct drm_connector *connector;
2275         int ret = -EINVAL;
2276         int i;
2277
2278         mutex_lock(&dev->mode_config.mutex);
2279
2280         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2281         if (!obj) {
2282                 goto out;
2283         }
2284         connector = obj_to_connector(obj);
2285
2286         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2287                 if (connector->property_ids[i] == out_resp->prop_id)
2288                         break;
2289         }
2290
2291         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2292                 goto out;
2293         }
2294
2295         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2296         if (!obj) {
2297                 goto out;
2298         }
2299         property = obj_to_property(obj);
2300
2301         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2302                 goto out;
2303
2304         if (property->flags & DRM_MODE_PROP_RANGE) {
2305                 if (out_resp->value < property->values[0])
2306                         goto out;
2307
2308                 if (out_resp->value > property->values[1])
2309                         goto out;
2310         } else {
2311                 int found = 0;
2312                 for (i = 0; i < property->num_values; i++) {
2313                         if (property->values[i] == out_resp->value) {
2314                                 found = 1;
2315                                 break;
2316                         }
2317                 }
2318                 if (!found) {
2319                         goto out;
2320                 }
2321         }
2322
2323         /* Do DPMS ourselves */
2324         if (property == connector->dev->mode_config.dpms_property) {
2325                 if (connector->funcs->dpms)
2326                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2327                 ret = 0;
2328         } else if (connector->funcs->set_property)
2329                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2330
2331         /* store the property value if succesful */
2332         if (!ret)
2333                 drm_connector_property_set_value(connector, property, out_resp->value);
2334 out:
2335         mutex_unlock(&dev->mode_config.mutex);
2336         return ret;
2337 }
2338
2339 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2340                                       struct drm_encoder *encoder)
2341 {
2342         int i;
2343
2344         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2345                 if (connector->encoder_ids[i] == 0) {
2346                         connector->encoder_ids[i] = encoder->base.id;
2347                         return 0;
2348                 }
2349         }
2350         return -ENOMEM;
2351 }
2352 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2353
2354 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2355                                     struct drm_encoder *encoder)
2356 {
2357         int i;
2358         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2359                 if (connector->encoder_ids[i] == encoder->base.id) {
2360                         connector->encoder_ids[i] = 0;
2361                         if (connector->encoder == encoder)
2362                                 connector->encoder = NULL;
2363                         break;
2364                 }
2365         }
2366 }
2367 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2368
2369 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2370                                   int gamma_size)
2371 {
2372         crtc->gamma_size = gamma_size;
2373
2374         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2375         if (!crtc->gamma_store) {
2376                 crtc->gamma_size = 0;
2377                 return false;
2378         }
2379
2380         return true;
2381 }
2382 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2383
2384 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2385                              void *data, struct drm_file *file_priv)
2386 {
2387         struct drm_mode_crtc_lut *crtc_lut = data;
2388         struct drm_mode_object *obj;
2389         struct drm_crtc *crtc;
2390         void *r_base, *g_base, *b_base;
2391         int size;
2392         int ret = 0;
2393
2394         mutex_lock(&dev->mode_config.mutex);
2395         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2396         if (!obj) {
2397                 ret = -EINVAL;
2398                 goto out;
2399         }
2400         crtc = obj_to_crtc(obj);
2401
2402         /* memcpy into gamma store */
2403         if (crtc_lut->gamma_size != crtc->gamma_size) {
2404                 ret = -EINVAL;
2405                 goto out;
2406         }
2407
2408         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2409         r_base = crtc->gamma_store;
2410         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2411                 ret = -EFAULT;
2412                 goto out;
2413         }
2414
2415         g_base = r_base + size;
2416         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2417                 ret = -EFAULT;
2418                 goto out;
2419         }
2420
2421         b_base = g_base + size;
2422         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2423                 ret = -EFAULT;
2424                 goto out;
2425         }
2426
2427         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2428
2429 out:
2430         mutex_unlock(&dev->mode_config.mutex);
2431         return ret;
2432
2433 }
2434
2435 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2436                              void *data, struct drm_file *file_priv)
2437 {
2438         struct drm_mode_crtc_lut *crtc_lut = data;
2439         struct drm_mode_object *obj;
2440         struct drm_crtc *crtc;
2441         void *r_base, *g_base, *b_base;
2442         int size;
2443         int ret = 0;
2444
2445         mutex_lock(&dev->mode_config.mutex);
2446         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2447         if (!obj) {
2448                 ret = -EINVAL;
2449                 goto out;
2450         }
2451         crtc = obj_to_crtc(obj);
2452
2453         /* memcpy into gamma store */
2454         if (crtc_lut->gamma_size != crtc->gamma_size) {
2455                 ret = -EINVAL;
2456                 goto out;
2457         }
2458
2459         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2460         r_base = crtc->gamma_store;
2461         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2462                 ret = -EFAULT;
2463                 goto out;
2464         }
2465
2466         g_base = r_base + size;
2467         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2468                 ret = -EFAULT;
2469                 goto out;
2470         }
2471
2472         b_base = g_base + size;
2473         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2474                 ret = -EFAULT;
2475                 goto out;
2476         }
2477 out:
2478         mutex_unlock(&dev->mode_config.mutex);
2479         return ret;
2480 }