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