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

   1 /*
   2  * Copyright (c) 2006-2008 Intel Corporation
   3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   4  * Copyright (c) 2008 Red Hat Inc.
   5  *
   6  * DRM core CRTC related functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Keith Packard
  28  *      Eric Anholt <eric@anholt.net>
  29  *      Dave Airlie <airlied@linux.ie>
  30  *      Jesse Barnes <jesse.barnes@intel.com>
  31  */
  32 #include <linux/list.h>
  33 #include "drm.h"
  34 #include "drmP.h"
  35 #include "drm_crtc.h"
  36
  37 struct drm_prop_enum_list {
  38         int type;
  39         char *name;
  40 };
  41
  42 /* Avoid boilerplate.  I'm tired of typing. */
  43 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  44         char *fnname(int val)                                   \
  45         {                                                       \
  46                 int i;                                          \
  47                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  48                         if (list[i].type == val)                \
  49                                 return list[i].name;            \
  50                 }                                               \
  51                 return "(unknown)";                             \
  52         }
  53
  54 /*
  55  * Global properties
  56  */
  57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  58 {       { DRM_MODE_DPMS_ON, "On" },
  59         { DRM_MODE_DPMS_STANDBY, "Standby" },
  60         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  61         { DRM_MODE_DPMS_OFF, "Off" }
  62 };
  63
  64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  65
  66 /*
  67  * Optional properties
  68  */
  69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  70 {
  71         { DRM_MODE_SCALE_NONE, "None" },
  72         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  73         { DRM_MODE_SCALE_CENTER, "Center" },
  74         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  75 };
  76
  77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  78 {
  79         { DRM_MODE_DITHERING_OFF, "Off" },
  80         { DRM_MODE_DITHERING_ON, "On" },
  81 };
  82
  83 /*
  84  * Non-global properties, but "required" for certain connectors.
  85  */
  86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  87 {
  88         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  89         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  90         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  91 };
  92
  93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  94
  95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
  96 {
  97         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
  98         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  99         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 100 };
 101
 102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 103                  drm_dvi_i_subconnector_enum_list)
 104
 105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 106 {
 107         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 108         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 109         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 110         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 111         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 112 };
 113
 114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 115
 116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 117 {
 118         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 119         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 120         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 121         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 122         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 123 };
 124
 125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 126                  drm_tv_subconnector_enum_list)
 127
 128 struct drm_conn_prop_enum_list {
 129         int type;
 130         char *name;
 131         int count;
 132 };
 133
 134 /*
 135  * Connector and encoder types.
 136  */
 137 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 138 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 139         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 140         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 141         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 142         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 143         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 144         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 145         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 146         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 147         { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
 148         { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
 149         { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
 150         { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
 151         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 152 };
 153
 154 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 155 {       { DRM_MODE_ENCODER_NONE, "None" },
 156         { DRM_MODE_ENCODER_DAC, "DAC" },
 157         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 158         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 159         { DRM_MODE_ENCODER_TVDAC, "TV" },
 160 };
 161
 162 char *drm_get_encoder_name(struct drm_encoder *encoder)
 163 {
 164         static char buf[32];
 165
 166         snprintf(buf, 32, "%s-%d",
 167                  drm_encoder_enum_list[encoder->encoder_type].name,
 168                  encoder->base.id);
 169         return buf;
 170 }
 171
 172 char *drm_get_connector_name(struct drm_connector *connector)
 173 {
 174         static char buf[32];
 175
 176         snprintf(buf, 32, "%s-%d",
 177                  drm_connector_enum_list[connector->connector_type].name,
 178                  connector->connector_type_id);
 179         return buf;
 180 }
 181 EXPORT_SYMBOL(drm_get_connector_name);
 182
 183 char *drm_get_connector_status_name(enum drm_connector_status status)
 184 {
 185         if (status == connector_status_connected)
 186                 return "connected";
 187         else if (status == connector_status_disconnected)
 188                 return "disconnected";
 189         else
 190                 return "unknown";
 191 }
 192
 193 /**
 194  * drm_mode_object_get - allocate a new identifier
 195  * @dev: DRM device
 196  * @ptr: object pointer, used to generate unique ID
 197  * @type: object type
 198  *
 199  * LOCKING:
 200  *
 201  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 202  * for tracking modes, CRTCs and connectors.
 203  *
 204  * RETURNS:
 205  * New unique (relative to other objects in @dev) integer identifier for the
 206  * object.
 207  */
 208 static int drm_mode_object_get(struct drm_device *dev,
 209                                struct drm_mode_object *obj, uint32_t obj_type)
 210 {
 211         int new_id = 0;
 212         int ret;
 213
 214 again:
 215         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 216                 DRM_ERROR("Ran out memory getting a mode number\n");
 217                 return -EINVAL;
 218         }
 219
 220         mutex_lock(&dev->mode_config.idr_mutex);
 221         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 222         mutex_unlock(&dev->mode_config.idr_mutex);
 223         if (ret == -EAGAIN)
 224                 goto again;
 225
 226         obj->id = new_id;
 227         obj->type = obj_type;
 228         return 0;
 229 }
 230
 231 /**
 232  * drm_mode_object_put - free an identifer
 233  * @dev: DRM device
 234  * @id: ID to free
 235  *
 236  * LOCKING:
 237  * Caller must hold DRM mode_config lock.
 238  *
 239  * Free @id from @dev's unique identifier pool.
 240  */
 241 static void drm_mode_object_put(struct drm_device *dev,
 242                                 struct drm_mode_object *object)
 243 {
 244         mutex_lock(&dev->mode_config.idr_mutex);
 245         idr_remove(&dev->mode_config.crtc_idr, object->id);
 246         mutex_unlock(&dev->mode_config.idr_mutex);
 247 }
 248
 249 void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
 250 {
 251         struct drm_mode_object *obj = NULL;
 252
 253         mutex_lock(&dev->mode_config.idr_mutex);
 254         obj = idr_find(&dev->mode_config.crtc_idr, id);
 255         if (!obj || (obj->type != type) || (obj->id != id))
 256                 obj = NULL;
 257         mutex_unlock(&dev->mode_config.idr_mutex);
 258
 259         return obj;
 260 }
 261 EXPORT_SYMBOL(drm_mode_object_find);
 262
 263 /**
 264  * drm_crtc_from_fb - find the CRTC structure associated with an fb
 265  * @dev: DRM device
 266  * @fb: framebuffer in question
 267  *
 268  * LOCKING:
 269  * Caller must hold mode_config lock.
 270  *
 271  * Find CRTC in the mode_config structure that matches @fb.
 272  *
 273  * RETURNS:
 274  * Pointer to the CRTC or NULL if it wasn't found.
 275  */
 276 struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
 277                                   struct drm_framebuffer *fb)
 278 {
 279         struct drm_crtc *crtc;
 280
 281         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 282                 if (crtc->fb == fb)
 283                         return crtc;
 284         }
 285         return NULL;
 286 }
 287
 288 /**
 289  * drm_framebuffer_init - initialize a framebuffer
 290  * @dev: DRM device
 291  *
 292  * LOCKING:
 293  * Caller must hold mode config lock.
 294  *
 295  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 296  * functions & device file and adds it to the master fd list.
 297  *
 298  * RETURNS:
 299  * Zero on success, error code on falure.
 300  */
 301 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 302                          const struct drm_framebuffer_funcs *funcs)
 303 {
 304         int ret;
 305
 306         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 307         if (ret) {
 308                 return ret;
 309         }
 310
 311         fb->dev = dev;
 312         fb->funcs = funcs;
 313         dev->mode_config.num_fb++;
 314         list_add(&fb->head, &dev->mode_config.fb_list);
 315
 316         return 0;
 317 }
 318 EXPORT_SYMBOL(drm_framebuffer_init);
 319
 320 /**
 321  * drm_framebuffer_cleanup - remove a framebuffer object
 322  * @fb: framebuffer to remove
 323  *
 324  * LOCKING:
 325  * Caller must hold mode config lock.
 326  *
 327  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 328  * it, setting it to NULL.
 329  */
 330 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 331 {
 332         struct drm_device *dev = fb->dev;
 333         struct drm_crtc *crtc;
 334
 335         /* remove from any CRTC */
 336         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 337                 if (crtc->fb == fb)
 338                         crtc->fb = NULL;
 339         }
 340
 341         drm_mode_object_put(dev, &fb->base);
 342         list_del(&fb->head);
 343         dev->mode_config.num_fb--;
 344 }
 345 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 346
 347 /**
 348  * drm_crtc_init - Initialise a new CRTC object
 349  * @dev: DRM device
 350  * @crtc: CRTC object to init
 351  * @funcs: callbacks for the new CRTC
 352  *
 353  * LOCKING:
 354  * Caller must hold mode config lock.
 355  *
 356  * Inits a new object created as base part of an driver crtc object.
 357  */
 358 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 359                    const struct drm_crtc_funcs *funcs)
 360 {
 361         crtc->dev = dev;
 362         crtc->funcs = funcs;
 363
 364         mutex_lock(&dev->mode_config.mutex);
 365         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 366
 367         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 368         dev->mode_config.num_crtc++;
 369         mutex_unlock(&dev->mode_config.mutex);
 370 }
 371 EXPORT_SYMBOL(drm_crtc_init);
 372
 373 /**
 374  * drm_crtc_cleanup - Cleans up the core crtc usage.
 375  * @crtc: CRTC to cleanup
 376  *
 377  * LOCKING:
 378  * Caller must hold mode config lock.
 379  *
 380  * Cleanup @crtc. Removes from drm modesetting space
 381  * does NOT free object, caller does that.
 382  */
 383 void drm_crtc_cleanup(struct drm_crtc *crtc)
 384 {
 385         struct drm_device *dev = crtc->dev;
 386
 387         if (crtc->gamma_store) {
 388                 kfree(crtc->gamma_store);
 389                 crtc->gamma_store = NULL;
 390         }
 391
 392         drm_mode_object_put(dev, &crtc->base);
 393         list_del(&crtc->head);
 394         dev->mode_config.num_crtc--;
 395 }
 396 EXPORT_SYMBOL(drm_crtc_cleanup);
 397
 398 /**
 399  * drm_mode_probed_add - add a mode to a connector's probed mode list
 400  * @connector: connector the new mode
 401  * @mode: mode data
 402  *
 403  * LOCKING:
 404  * Caller must hold mode config lock.
 405  *
 406  * Add @mode to @connector's mode list for later use.
 407  */
 408 void drm_mode_probed_add(struct drm_connector *connector,
 409                          struct drm_display_mode *mode)
 410 {
 411         list_add(&mode->head, &connector->probed_modes);
 412 }
 413 EXPORT_SYMBOL(drm_mode_probed_add);
 414
 415 /**
 416  * drm_mode_remove - remove and free a mode
 417  * @connector: connector list to modify
 418  * @mode: mode to remove
 419  *
 420  * LOCKING:
 421  * Caller must hold mode config lock.
 422  *
 423  * Remove @mode from @connector's mode list, then free it.
 424  */
 425 void drm_mode_remove(struct drm_connector *connector,
 426                      struct drm_display_mode *mode)
 427 {
 428         list_del(&mode->head);
 429         kfree(mode);
 430 }
 431 EXPORT_SYMBOL(drm_mode_remove);
 432
 433 /**
 434  * drm_connector_init - Init a preallocated connector
 435  * @dev: DRM device
 436  * @connector: the connector to init
 437  * @funcs: callbacks for this connector
 438  * @name: user visible name of the connector
 439  *
 440  * LOCKING:
 441  * Caller must hold @dev's mode_config lock.
 442  *
 443  * Initialises a preallocated connector. Connectors should be
 444  * subclassed as part of driver connector objects.
 445  */
 446 void drm_connector_init(struct drm_device *dev,
 447                      struct drm_connector *connector,
 448                      const struct drm_connector_funcs *funcs,
 449                      int connector_type)
 450 {
 451         mutex_lock(&dev->mode_config.mutex);
 452
 453         connector->dev = dev;
 454         connector->funcs = funcs;
 455         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 456         connector->connector_type = connector_type;
 457         connector->connector_type_id =
 458                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 459         INIT_LIST_HEAD(&connector->user_modes);
 460         INIT_LIST_HEAD(&connector->probed_modes);
 461         INIT_LIST_HEAD(&connector->modes);
 462         connector->edid_blob_ptr = NULL;
 463
 464         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 465         dev->mode_config.num_connector++;
 466
 467         drm_connector_attach_property(connector,
 468                                       dev->mode_config.edid_property, 0);
 469
 470         drm_connector_attach_property(connector,
 471                                       dev->mode_config.dpms_property, 0);
 472
 473         mutex_unlock(&dev->mode_config.mutex);
 474 }
 475 EXPORT_SYMBOL(drm_connector_init);
 476
 477 /**
 478  * drm_connector_cleanup - cleans up an initialised connector
 479  * @connector: connector to cleanup
 480  *
 481  * LOCKING:
 482  * Caller must hold @dev's mode_config lock.
 483  *
 484  * Cleans up the connector but doesn't free the object.
 485  */
 486 void drm_connector_cleanup(struct drm_connector *connector)
 487 {
 488         struct drm_device *dev = connector->dev;
 489         struct drm_display_mode *mode, *t;
 490
 491         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 492                 drm_mode_remove(connector, mode);
 493
 494         list_for_each_entry_safe(mode, t, &connector->modes, head)
 495                 drm_mode_remove(connector, mode);
 496
 497         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 498                 drm_mode_remove(connector, mode);
 499
 500         mutex_lock(&dev->mode_config.mutex);
 501         drm_mode_object_put(dev, &connector->base);
 502         list_del(&connector->head);
 503         mutex_unlock(&dev->mode_config.mutex);
 504 }
 505 EXPORT_SYMBOL(drm_connector_cleanup);
 506
 507 void drm_encoder_init(struct drm_device *dev,
 508                       struct drm_encoder *encoder,
 509                       const struct drm_encoder_funcs *funcs,
 510                       int encoder_type)
 511 {
 512         mutex_lock(&dev->mode_config.mutex);
 513
 514         encoder->dev = dev;
 515
 516         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 517         encoder->encoder_type = encoder_type;
 518         encoder->funcs = funcs;
 519
 520         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 521         dev->mode_config.num_encoder++;
 522
 523         mutex_unlock(&dev->mode_config.mutex);
 524 }
 525 EXPORT_SYMBOL(drm_encoder_init);
 526
 527 void drm_encoder_cleanup(struct drm_encoder *encoder)
 528 {
 529         struct drm_device *dev = encoder->dev;
 530         mutex_lock(&dev->mode_config.mutex);
 531         drm_mode_object_put(dev, &encoder->base);
 532         list_del(&encoder->head);
 533         mutex_unlock(&dev->mode_config.mutex);
 534 }
 535 EXPORT_SYMBOL(drm_encoder_cleanup);
 536
 537 /**
 538  * drm_mode_create - create a new display mode
 539  * @dev: DRM device
 540  *
 541  * LOCKING:
 542  * Caller must hold DRM mode_config lock.
 543  *
 544  * Create a new drm_display_mode, give it an ID, and return it.
 545  *
 546  * RETURNS:
 547  * Pointer to new mode on success, NULL on error.
 548  */
 549 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 550 {
 551         struct drm_display_mode *nmode;
 552
 553         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 554         if (!nmode)
 555                 return NULL;
 556
 557         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 558         return nmode;
 559 }
 560 EXPORT_SYMBOL(drm_mode_create);
 561
 562 /**
 563  * drm_mode_destroy - remove a mode
 564  * @dev: DRM device
 565  * @mode: mode to remove
 566  *
 567  * LOCKING:
 568  * Caller must hold mode config lock.
 569  *
 570  * Free @mode's unique identifier, then free it.
 571  */
 572 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 573 {
 574         drm_mode_object_put(dev, &mode->base);
 575
 576         kfree(mode);
 577 }
 578 EXPORT_SYMBOL(drm_mode_destroy);
 579
 580 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 581 {
 582         struct drm_property *edid;
 583         struct drm_property *dpms;
 584         int i;
 585
 586         /*
 587          * Standard properties (apply to all connectors)
 588          */
 589         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 590                                    DRM_MODE_PROP_IMMUTABLE,
 591                                    "EDID", 0);
 592         dev->mode_config.edid_property = edid;
 593
 594         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 595                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 596         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 597                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 598                                       drm_dpms_enum_list[i].name);
 599         dev->mode_config.dpms_property = dpms;
 600
 601         return 0;
 602 }
 603
 604 /**
 605  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 606  * @dev: DRM device
 607  *
 608  * Called by a driver the first time a DVI-I connector is made.
 609  */
 610 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 611 {
 612         struct drm_property *dvi_i_selector;
 613         struct drm_property *dvi_i_subconnector;
 614         int i;
 615
 616         if (dev->mode_config.dvi_i_select_subconnector_property)
 617                 return 0;
 618
 619         dvi_i_selector =
 620                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 621                                     "select subconnector",
 622                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 623         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 624                 drm_property_add_enum(dvi_i_selector, i,
 625                                       drm_dvi_i_select_enum_list[i].type,
 626                                       drm_dvi_i_select_enum_list[i].name);
 627         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 628
 629         dvi_i_subconnector =
 630                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 631                                     DRM_MODE_PROP_IMMUTABLE,
 632                                     "subconnector",
 633                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 634         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 635                 drm_property_add_enum(dvi_i_subconnector, i,
 636                                       drm_dvi_i_subconnector_enum_list[i].type,
 637                                       drm_dvi_i_subconnector_enum_list[i].name);
 638         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 639
 640         return 0;
 641 }
 642 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 643
 644 /**
 645  * drm_create_tv_properties - create TV specific connector properties
 646  * @dev: DRM device
 647  * @num_modes: number of different TV formats (modes) supported
 648  * @modes: array of pointers to strings containing name of each format
 649  *
 650  * Called by a driver's TV initialization routine, this function creates
 651  * the TV specific connector properties for a given device.  Caller is
 652  * responsible for allocating a list of format names and passing them to
 653  * this routine.
 654  */
 655 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 656                                   char *modes[])
 657 {
 658         struct drm_property *tv_selector;
 659         struct drm_property *tv_subconnector;
 660         int i;
 661
 662         if (dev->mode_config.tv_select_subconnector_property)
 663                 return 0;
 664
 665         /*
 666          * Basic connector properties
 667          */
 668         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 669                                           "select subconnector",
 670                                           ARRAY_SIZE(drm_tv_select_enum_list));
 671         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 672                 drm_property_add_enum(tv_selector, i,
 673                                       drm_tv_select_enum_list[i].type,
 674                                       drm_tv_select_enum_list[i].name);
 675         dev->mode_config.tv_select_subconnector_property = tv_selector;
 676
 677         tv_subconnector =
 678                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 679                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 680                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 681         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 682                 drm_property_add_enum(tv_subconnector, i,
 683                                       drm_tv_subconnector_enum_list[i].type,
 684                                       drm_tv_subconnector_enum_list[i].name);
 685         dev->mode_config.tv_subconnector_property = tv_subconnector;
 686
 687         /*
 688          * Other, TV specific properties: margins & TV modes.
 689          */
 690         dev->mode_config.tv_left_margin_property =
 691                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 692                                     "left margin", 2);
 693         dev->mode_config.tv_left_margin_property->values[0] = 0;
 694         dev->mode_config.tv_left_margin_property->values[1] = 100;
 695
 696         dev->mode_config.tv_right_margin_property =
 697                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 698                                     "right margin", 2);
 699         dev->mode_config.tv_right_margin_property->values[0] = 0;
 700         dev->mode_config.tv_right_margin_property->values[1] = 100;
 701
 702         dev->mode_config.tv_top_margin_property =
 703                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 704                                     "top margin", 2);
 705         dev->mode_config.tv_top_margin_property->values[0] = 0;
 706         dev->mode_config.tv_top_margin_property->values[1] = 100;
 707
 708         dev->mode_config.tv_bottom_margin_property =
 709                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 710                                     "bottom margin", 2);
 711         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 712         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 713
 714         dev->mode_config.tv_mode_property =
 715                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 716                                     "mode", num_modes);
 717         for (i = 0; i < num_modes; i++)
 718                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 719                                       i, modes[i]);
 720
 721         dev->mode_config.tv_brightness_property =
 722                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 723                                     "brightness", 2);
 724         dev->mode_config.tv_brightness_property->values[0] = 0;
 725         dev->mode_config.tv_brightness_property->values[1] = 100;
 726
 727         dev->mode_config.tv_contrast_property =
 728                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 729                                     "contrast", 2);
 730         dev->mode_config.tv_contrast_property->values[0] = 0;
 731         dev->mode_config.tv_contrast_property->values[1] = 100;
 732
 733         dev->mode_config.tv_flicker_reduction_property =
 734                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 735                                     "flicker reduction", 2);
 736         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 737         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 738
 739         dev->mode_config.tv_overscan_property =
 740                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 741                                     "overscan", 2);
 742         dev->mode_config.tv_overscan_property->values[0] = 0;
 743         dev->mode_config.tv_overscan_property->values[1] = 100;
 744
 745         dev->mode_config.tv_saturation_property =
 746                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 747                                     "saturation", 2);
 748         dev->mode_config.tv_saturation_property->values[0] = 0;
 749         dev->mode_config.tv_saturation_property->values[1] = 100;
 750
 751         dev->mode_config.tv_hue_property =
 752                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 753                                     "hue", 2);
 754         dev->mode_config.tv_hue_property->values[0] = 0;
 755         dev->mode_config.tv_hue_property->values[1] = 100;
 756
 757         return 0;
 758 }
 759 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 760
 761 /**
 762  * drm_mode_create_scaling_mode_property - create scaling mode property
 763  * @dev: DRM device
 764  *
 765  * Called by a driver the first time it's needed, must be attached to desired
 766  * connectors.
 767  */
 768 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 769 {
 770         struct drm_property *scaling_mode;
 771         int i;
 772
 773         if (dev->mode_config.scaling_mode_property)
 774                 return 0;
 775
 776         scaling_mode =
 777                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 778                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 779         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 780                 drm_property_add_enum(scaling_mode, i,
 781                                       drm_scaling_mode_enum_list[i].type,
 782                                       drm_scaling_mode_enum_list[i].name);
 783
 784         dev->mode_config.scaling_mode_property = scaling_mode;
 785
 786         return 0;
 787 }
 788 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 789
 790 /**
 791  * drm_mode_create_dithering_property - create dithering property
 792  * @dev: DRM device
 793  *
 794  * Called by a driver the first time it's needed, must be attached to desired
 795  * connectors.
 796  */
 797 int drm_mode_create_dithering_property(struct drm_device *dev)
 798 {
 799         struct drm_property *dithering_mode;
 800         int i;
 801
 802         if (dev->mode_config.dithering_mode_property)
 803                 return 0;
 804
 805         dithering_mode =
 806                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 807                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 808         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 809                 drm_property_add_enum(dithering_mode, i,
 810                                       drm_dithering_mode_enum_list[i].type,
 811                                       drm_dithering_mode_enum_list[i].name);
 812         dev->mode_config.dithering_mode_property = dithering_mode;
 813
 814         return 0;
 815 }
 816 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 817
 818 /**
 819  * drm_mode_config_init - initialize DRM mode_configuration structure
 820  * @dev: DRM device
 821  *
 822  * LOCKING:
 823  * None, should happen single threaded at init time.
 824  *
 825  * Initialize @dev's mode_config structure, used for tracking the graphics
 826  * configuration of @dev.
 827  */
 828 void drm_mode_config_init(struct drm_device *dev)
 829 {
 830         mutex_init(&dev->mode_config.mutex);
 831         mutex_init(&dev->mode_config.idr_mutex);
 832         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 833         INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
 834         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 835         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 836         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 837         INIT_LIST_HEAD(&dev->mode_config.property_list);
 838         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 839         idr_init(&dev->mode_config.crtc_idr);
 840
 841         mutex_lock(&dev->mode_config.mutex);
 842         drm_mode_create_standard_connector_properties(dev);
 843         mutex_unlock(&dev->mode_config.mutex);
 844
 845         /* Just to be sure */
 846         dev->mode_config.num_fb = 0;
 847         dev->mode_config.num_connector = 0;
 848         dev->mode_config.num_crtc = 0;
 849         dev->mode_config.num_encoder = 0;
 850 }
 851 EXPORT_SYMBOL(drm_mode_config_init);
 852
 853 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 854 {
 855         uint32_t total_objects = 0;
 856
 857         total_objects += dev->mode_config.num_crtc;
 858         total_objects += dev->mode_config.num_connector;
 859         total_objects += dev->mode_config.num_encoder;
 860
 861         if (total_objects == 0)
 862                 return -EINVAL;
 863
 864         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 865         if (!group->id_list)
 866                 return -ENOMEM;
 867
 868         group->num_crtcs = 0;
 869         group->num_connectors = 0;
 870         group->num_encoders = 0;
 871         return 0;
 872 }
 873
 874 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 875                                      struct drm_mode_group *group)
 876 {
 877         struct drm_crtc *crtc;
 878         struct drm_encoder *encoder;
 879         struct drm_connector *connector;
 880         int ret;
 881
 882         if ((ret = drm_mode_group_init(dev, group)))
 883                 return ret;
 884
 885         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 886                 group->id_list[group->num_crtcs++] = crtc->base.id;
 887
 888         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 889                 group->id_list[group->num_crtcs + group->num_encoders++] =
 890                 encoder->base.id;
 891
 892         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 893                 group->id_list[group->num_crtcs + group->num_encoders +
 894                                group->num_connectors++] = connector->base.id;
 895
 896         return 0;
 897 }
 898
 899 /**
 900  * drm_mode_config_cleanup - free up DRM mode_config info
 901  * @dev: DRM device
 902  *
 903  * LOCKING:
 904  * Caller must hold mode config lock.
 905  *
 906  * Free up all the connectors and CRTCs associated with this DRM device, then
 907  * free up the framebuffers and associated buffer objects.
 908  *
 909  * FIXME: cleanup any dangling user buffer objects too
 910  */
 911 void drm_mode_config_cleanup(struct drm_device *dev)
 912 {
 913         struct drm_connector *connector, *ot;
 914         struct drm_crtc *crtc, *ct;
 915         struct drm_encoder *encoder, *enct;
 916         struct drm_framebuffer *fb, *fbt;
 917         struct drm_property *property, *pt;
 918
 919         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 920                                  head) {
 921                 encoder->funcs->destroy(encoder);
 922         }
 923
 924         list_for_each_entry_safe(connector, ot,
 925                                  &dev->mode_config.connector_list, head) {
 926                 connector->funcs->destroy(connector);
 927         }
 928
 929         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 930                                  head) {
 931                 drm_property_destroy(dev, property);
 932         }
 933
 934         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 935                 fb->funcs->destroy(fb);
 936         }
 937
 938         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 939                 crtc->funcs->destroy(crtc);
 940         }
 941
 942 }
 943 EXPORT_SYMBOL(drm_mode_config_cleanup);
 944
 945 /**
 946  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 947  * @out: drm_mode_modeinfo struct to return to the user
 948  * @in: drm_display_mode to use
 949  *
 950  * LOCKING:
 951  * None.
 952  *
 953  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 954  * the user.
 955  */
 956 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 957                                struct drm_display_mode *in)
 958 {
 959         out->clock = in->clock;
 960         out->hdisplay = in->hdisplay;
 961         out->hsync_start = in->hsync_start;
 962         out->hsync_end = in->hsync_end;
 963         out->htotal = in->htotal;
 964         out->hskew = in->hskew;
 965         out->vdisplay = in->vdisplay;
 966         out->vsync_start = in->vsync_start;
 967         out->vsync_end = in->vsync_end;
 968         out->vtotal = in->vtotal;
 969         out->vscan = in->vscan;
 970         out->vrefresh = in->vrefresh;
 971         out->flags = in->flags;
 972         out->type = in->type;
 973         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
 974         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
 975 }
 976
 977 /**
 978  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
 979  * @out: drm_display_mode to return to the user
 980  * @in: drm_mode_modeinfo to use
 981  *
 982  * LOCKING:
 983  * None.
 984  *
 985  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
 986  * the caller.
 987  */
 988 void drm_crtc_convert_umode(struct drm_display_mode *out,
 989                             struct drm_mode_modeinfo *in)
 990 {
 991         out->clock = in->clock;
 992         out->hdisplay = in->hdisplay;
 993         out->hsync_start = in->hsync_start;
 994         out->hsync_end = in->hsync_end;
 995         out->htotal = in->htotal;
 996         out->hskew = in->hskew;
 997         out->vdisplay = in->vdisplay;
 998         out->vsync_start = in->vsync_start;
 999         out->vsync_end = in->vsync_end;
1000         out->vtotal = in->vtotal;
1001         out->vscan = in->vscan;
1002         out->vrefresh = in->vrefresh;
1003         out->flags = in->flags;
1004         out->type = in->type;
1005         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1006         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1007 }
1008
1009 /**
1010  * drm_mode_getresources - get graphics configuration
1011  * @inode: inode from the ioctl
1012  * @filp: file * from the ioctl
1013  * @cmd: cmd from ioctl
1014  * @arg: arg from ioctl
1015  *
1016  * LOCKING:
1017  * Takes mode config lock.
1018  *
1019  * Construct a set of configuration description structures and return
1020  * them to the user, including CRTC, connector and framebuffer configuration.
1021  *
1022  * Called by the user via ioctl.
1023  *
1024  * RETURNS:
1025  * Zero on success, errno on failure.
1026  */
1027 int drm_mode_getresources(struct drm_device *dev, void *data,
1028                           struct drm_file *file_priv)
1029 {
1030         struct drm_mode_card_res *card_res = data;
1031         struct list_head *lh;
1032         struct drm_framebuffer *fb;
1033         struct drm_connector *connector;
1034         struct drm_crtc *crtc;
1035         struct drm_encoder *encoder;
1036         int ret = 0;
1037         int connector_count = 0;
1038         int crtc_count = 0;
1039         int fb_count = 0;
1040         int encoder_count = 0;
1041         int copied = 0, i;
1042         uint32_t __user *fb_id;
1043         uint32_t __user *crtc_id;
1044         uint32_t __user *connector_id;
1045         uint32_t __user *encoder_id;
1046         struct drm_mode_group *mode_group;
1047
1048         mutex_lock(&dev->mode_config.mutex);
1049
1050         /*
1051          * For the non-control nodes we need to limit the list of resources
1052          * by IDs in the group list for this node
1053          */
1054         list_for_each(lh, &file_priv->fbs)
1055                 fb_count++;
1056
1057         mode_group = &file_priv->master->minor->mode_group;
1058         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1059
1060                 list_for_each(lh, &dev->mode_config.crtc_list)
1061                         crtc_count++;
1062
1063                 list_for_each(lh, &dev->mode_config.connector_list)
1064                         connector_count++;
1065
1066                 list_for_each(lh, &dev->mode_config.encoder_list)
1067                         encoder_count++;
1068         } else {
1069
1070                 crtc_count = mode_group->num_crtcs;
1071                 connector_count = mode_group->num_connectors;
1072                 encoder_count = mode_group->num_encoders;
1073         }
1074
1075         card_res->max_height = dev->mode_config.max_height;
1076         card_res->min_height = dev->mode_config.min_height;
1077         card_res->max_width = dev->mode_config.max_width;
1078         card_res->min_width = dev->mode_config.min_width;
1079
1080         /* handle this in 4 parts */
1081         /* FBs */
1082         if (card_res->count_fbs >= fb_count) {
1083                 copied = 0;
1084                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1085                 list_for_each_entry(fb, &file_priv->fbs, head) {
1086                         if (put_user(fb->base.id, fb_id + copied)) {
1087                                 ret = -EFAULT;
1088                                 goto out;
1089                         }
1090                         copied++;
1091                 }
1092         }
1093         card_res->count_fbs = fb_count;
1094
1095         /* CRTCs */
1096         if (card_res->count_crtcs >= crtc_count) {
1097                 copied = 0;
1098                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1099                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1100                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1101                                             head) {
1102                                 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1103                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1104                                         ret = -EFAULT;
1105                                         goto out;
1106                                 }
1107                                 copied++;
1108                         }
1109                 } else {
1110                         for (i = 0; i < mode_group->num_crtcs; i++) {
1111                                 if (put_user(mode_group->id_list[i],
1112                                              crtc_id + copied)) {
1113                                         ret = -EFAULT;
1114                                         goto out;
1115                                 }
1116                                 copied++;
1117                         }
1118                 }
1119         }
1120         card_res->count_crtcs = crtc_count;
1121
1122         /* Encoders */
1123         if (card_res->count_encoders >= encoder_count) {
1124                 copied = 0;
1125                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1126                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1127                         list_for_each_entry(encoder,
1128                                             &dev->mode_config.encoder_list,
1129                                             head) {
1130                                 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1131                                           encoder->base.id);
1132                                 if (put_user(encoder->base.id, encoder_id +
1133                                              copied)) {
1134                                         ret = -EFAULT;
1135                                         goto out;
1136                                 }
1137                                 copied++;
1138                         }
1139                 } else {
1140                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1141                                 if (put_user(mode_group->id_list[i],
1142                                              encoder_id + copied)) {
1143                                         ret = -EFAULT;
1144                                         goto out;
1145                                 }
1146                                 copied++;
1147                         }
1148
1149                 }
1150         }
1151         card_res->count_encoders = encoder_count;
1152
1153         /* Connectors */
1154         if (card_res->count_connectors >= connector_count) {
1155                 copied = 0;
1156                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1157                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1158                         list_for_each_entry(connector,
1159                                             &dev->mode_config.connector_list,
1160                                             head) {
1161                                 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1162                                           connector->base.id);
1163                                 if (put_user(connector->base.id,
1164                                              connector_id + copied)) {
1165                                         ret = -EFAULT;
1166                                         goto out;
1167                                 }
1168                                 copied++;
1169                         }
1170                 } else {
1171                         int start = mode_group->num_crtcs +
1172                                 mode_group->num_encoders;
1173                         for (i = start; i < start + mode_group->num_connectors; i++) {
1174                                 if (put_user(mode_group->id_list[i],
1175                                              connector_id + copied)) {
1176                                         ret = -EFAULT;
1177                                         goto out;
1178                                 }
1179                                 copied++;
1180                         }
1181                 }
1182         }
1183         card_res->count_connectors = connector_count;
1184
1185         DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1186                   card_res->count_connectors, card_res->count_encoders);
1187
1188 out:
1189         mutex_unlock(&dev->mode_config.mutex);
1190         return ret;
1191 }
1192
1193 /**
1194  * drm_mode_getcrtc - get CRTC configuration
1195  * @inode: inode from the ioctl
1196  * @filp: file * from the ioctl
1197  * @cmd: cmd from ioctl
1198  * @arg: arg from ioctl
1199  *
1200  * LOCKING:
1201  * Caller? (FIXME)
1202  *
1203  * Construct a CRTC configuration structure to return to the user.
1204  *
1205  * Called by the user via ioctl.
1206  *
1207  * RETURNS:
1208  * Zero on success, errno on failure.
1209  */
1210 int drm_mode_getcrtc(struct drm_device *dev,
1211                      void *data, struct drm_file *file_priv)
1212 {
1213         struct drm_mode_crtc *crtc_resp = data;
1214         struct drm_crtc *crtc;
1215         struct drm_mode_object *obj;
1216         int ret = 0;
1217
1218         mutex_lock(&dev->mode_config.mutex);
1219
1220         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1221                                    DRM_MODE_OBJECT_CRTC);
1222         if (!obj) {
1223                 ret = -EINVAL;
1224                 goto out;
1225         }
1226         crtc = obj_to_crtc(obj);
1227
1228         crtc_resp->x = crtc->x;
1229         crtc_resp->y = crtc->y;
1230         crtc_resp->gamma_size = crtc->gamma_size;
1231         if (crtc->fb)
1232                 crtc_resp->fb_id = crtc->fb->base.id;
1233         else
1234                 crtc_resp->fb_id = 0;
1235
1236         if (crtc->enabled) {
1237
1238                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1239                 crtc_resp->mode_valid = 1;
1240
1241         } else {
1242                 crtc_resp->mode_valid = 0;
1243         }
1244
1245 out:
1246         mutex_unlock(&dev->mode_config.mutex);
1247         return ret;
1248 }
1249
1250 /**
1251  * drm_mode_getconnector - get connector configuration
1252  * @inode: inode from the ioctl
1253  * @filp: file * from the ioctl
1254  * @cmd: cmd from ioctl
1255  * @arg: arg from ioctl
1256  *
1257  * LOCKING:
1258  * Caller? (FIXME)
1259  *
1260  * Construct a connector configuration structure to return to the user.
1261  *
1262  * Called by the user via ioctl.
1263  *
1264  * RETURNS:
1265  * Zero on success, errno on failure.
1266  */
1267 int drm_mode_getconnector(struct drm_device *dev, void *data,
1268                           struct drm_file *file_priv)
1269 {
1270         struct drm_mode_get_connector *out_resp = data;
1271         struct drm_mode_object *obj;
1272         struct drm_connector *connector;
1273         struct drm_display_mode *mode;
1274         int mode_count = 0;
1275         int props_count = 0;
1276         int encoders_count = 0;
1277         int ret = 0;
1278         int copied = 0;
1279         int i;
1280         struct drm_mode_modeinfo u_mode;
1281         struct drm_mode_modeinfo __user *mode_ptr;
1282         uint32_t __user *prop_ptr;
1283         uint64_t __user *prop_values;
1284         uint32_t __user *encoder_ptr;
1285
1286         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1287
1288         DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1289
1290         mutex_lock(&dev->mode_config.mutex);
1291
1292         obj = drm_mode_object_find(dev, out_resp->connector_id,
1293                                    DRM_MODE_OBJECT_CONNECTOR);
1294         if (!obj) {
1295                 ret = -EINVAL;
1296                 goto out;
1297         }
1298         connector = obj_to_connector(obj);
1299
1300         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1301                 if (connector->property_ids[i] != 0) {
1302                         props_count++;
1303                 }
1304         }
1305
1306         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1307                 if (connector->encoder_ids[i] != 0) {
1308                         encoders_count++;
1309                 }
1310         }
1311
1312         if (out_resp->count_modes == 0) {
1313                 connector->funcs->fill_modes(connector,
1314                                              dev->mode_config.max_width,
1315                                              dev->mode_config.max_height);
1316         }
1317
1318         /* delayed so we get modes regardless of pre-fill_modes state */
1319         list_for_each_entry(mode, &connector->modes, head)
1320                 mode_count++;
1321
1322         out_resp->connector_id = connector->base.id;
1323         out_resp->connector_type = connector->connector_type;
1324         out_resp->connector_type_id = connector->connector_type_id;
1325         out_resp->mm_width = connector->display_info.width_mm;
1326         out_resp->mm_height = connector->display_info.height_mm;
1327         out_resp->subpixel = connector->display_info.subpixel_order;
1328         out_resp->connection = connector->status;
1329         if (connector->encoder)
1330                 out_resp->encoder_id = connector->encoder->base.id;
1331         else
1332                 out_resp->encoder_id = 0;
1333
1334         /*
1335          * This ioctl is called twice, once to determine how much space is
1336          * needed, and the 2nd time to fill it.
1337          */
1338         if ((out_resp->count_modes >= mode_count) && mode_count) {
1339                 copied = 0;
1340                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1341                 list_for_each_entry(mode, &connector->modes, head) {
1342                         drm_crtc_convert_to_umode(&u_mode, mode);
1343                         if (copy_to_user(mode_ptr + copied,
1344                                          &u_mode, sizeof(u_mode))) {
1345                                 ret = -EFAULT;
1346                                 goto out;
1347                         }
1348                         copied++;
1349                 }
1350         }
1351         out_resp->count_modes = mode_count;
1352
1353         if ((out_resp->count_props >= props_count) && props_count) {
1354                 copied = 0;
1355                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1356                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1357                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1358                         if (connector->property_ids[i] != 0) {
1359                                 if (put_user(connector->property_ids[i],
1360                                              prop_ptr + copied)) {
1361                                         ret = -EFAULT;
1362                                         goto out;
1363                                 }
1364
1365                                 if (put_user(connector->property_values[i],
1366                                              prop_values + copied)) {
1367                                         ret = -EFAULT;
1368                                         goto out;
1369                                 }
1370                                 copied++;
1371                         }
1372                 }
1373         }
1374         out_resp->count_props = props_count;
1375
1376         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1377                 copied = 0;
1378                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1379                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1380                         if (connector->encoder_ids[i] != 0) {
1381                                 if (put_user(connector->encoder_ids[i],
1382                                              encoder_ptr + copied)) {
1383                                         ret = -EFAULT;
1384                                         goto out;
1385                                 }
1386                                 copied++;
1387                         }
1388                 }
1389         }
1390         out_resp->count_encoders = encoders_count;
1391
1392 out:
1393         mutex_unlock(&dev->mode_config.mutex);
1394         return ret;
1395 }
1396
1397 int drm_mode_getencoder(struct drm_device *dev, void *data,
1398                         struct drm_file *file_priv)
1399 {
1400         struct drm_mode_get_encoder *enc_resp = data;
1401         struct drm_mode_object *obj;
1402         struct drm_encoder *encoder;
1403         int ret = 0;
1404
1405         mutex_lock(&dev->mode_config.mutex);
1406         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1407                                    DRM_MODE_OBJECT_ENCODER);
1408         if (!obj) {
1409                 ret = -EINVAL;
1410                 goto out;
1411         }
1412         encoder = obj_to_encoder(obj);
1413
1414         if (encoder->crtc)
1415                 enc_resp->crtc_id = encoder->crtc->base.id;
1416         else
1417                 enc_resp->crtc_id = 0;
1418         enc_resp->encoder_type = encoder->encoder_type;
1419         enc_resp->encoder_id = encoder->base.id;
1420         enc_resp->possible_crtcs = encoder->possible_crtcs;
1421         enc_resp->possible_clones = encoder->possible_clones;
1422
1423 out:
1424         mutex_unlock(&dev->mode_config.mutex);
1425         return ret;
1426 }
1427
1428 /**
1429  * drm_mode_setcrtc - set CRTC configuration
1430  * @inode: inode from the ioctl
1431  * @filp: file * from the ioctl
1432  * @cmd: cmd from ioctl
1433  * @arg: arg from ioctl
1434  *
1435  * LOCKING:
1436  * Caller? (FIXME)
1437  *
1438  * Build a new CRTC configuration based on user request.
1439  *
1440  * Called by the user via ioctl.
1441  *
1442  * RETURNS:
1443  * Zero on success, errno on failure.
1444  */
1445 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1446                      struct drm_file *file_priv)
1447 {
1448         struct drm_mode_config *config = &dev->mode_config;
1449         struct drm_mode_crtc *crtc_req = data;
1450         struct drm_mode_object *obj;
1451         struct drm_crtc *crtc, *crtcfb;
1452         struct drm_connector **connector_set = NULL, *connector;
1453         struct drm_framebuffer *fb = NULL;
1454         struct drm_display_mode *mode = NULL;
1455         struct drm_mode_set set;
1456         uint32_t __user *set_connectors_ptr;
1457         int ret = 0;
1458         int i;
1459
1460         mutex_lock(&dev->mode_config.mutex);
1461         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1462                                    DRM_MODE_OBJECT_CRTC);
1463         if (!obj) {
1464                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1465                 ret = -EINVAL;
1466                 goto out;
1467         }
1468         crtc = obj_to_crtc(obj);
1469
1470         if (crtc_req->mode_valid) {
1471                 /* If we have a mode we need a framebuffer. */
1472                 /* If we pass -1, set the mode with the currently bound fb */
1473                 if (crtc_req->fb_id == -1) {
1474                         list_for_each_entry(crtcfb,
1475                                             &dev->mode_config.crtc_list, head) {
1476                                 if (crtcfb == crtc) {
1477                                         DRM_DEBUG_KMS("Using current fb for "
1478                                                         "setmode\n");
1479                                         fb = crtc->fb;
1480                                 }
1481                         }
1482                 } else {
1483                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1484                                                    DRM_MODE_OBJECT_FB);
1485                         if (!obj) {
1486                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1487                                                 crtc_req->fb_id);
1488                                 ret = -EINVAL;
1489                                 goto out;
1490                         }
1491                         fb = obj_to_fb(obj);
1492                 }
1493
1494                 mode = drm_mode_create(dev);
1495                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1496                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1497         }
1498
1499         if (crtc_req->count_connectors == 0 && mode) {
1500                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1501                 ret = -EINVAL;
1502                 goto out;
1503         }
1504
1505         if (crtc_req->count_connectors > 0 && !mode && !fb) {
1506                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1507                           crtc_req->count_connectors);
1508                 ret = -EINVAL;
1509                 goto out;
1510         }
1511
1512         if (crtc_req->count_connectors > 0) {
1513                 u32 out_id;
1514
1515                 /* Avoid unbounded kernel memory allocation */
1516                 if (crtc_req->count_connectors > config->num_connector) {
1517                         ret = -EINVAL;
1518                         goto out;
1519                 }
1520
1521                 connector_set = kmalloc(crtc_req->count_connectors *
1522                                         sizeof(struct drm_connector *),
1523                                         GFP_KERNEL);
1524                 if (!connector_set) {
1525                         ret = -ENOMEM;
1526                         goto out;
1527                 }
1528
1529                 for (i = 0; i < crtc_req->count_connectors; i++) {
1530                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1531                         if (get_user(out_id, &set_connectors_ptr[i])) {
1532                                 ret = -EFAULT;
1533                                 goto out;
1534                         }
1535
1536                         obj = drm_mode_object_find(dev, out_id,
1537                                                    DRM_MODE_OBJECT_CONNECTOR);
1538                         if (!obj) {
1539                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1540                                                 out_id);
1541                                 ret = -EINVAL;
1542                                 goto out;
1543                         }
1544                         connector = obj_to_connector(obj);
1545
1546                         connector_set[i] = connector;
1547                 }
1548         }
1549
1550         set.crtc = crtc;
1551         set.x = crtc_req->x;
1552         set.y = crtc_req->y;
1553         set.mode = mode;
1554         set.connectors = connector_set;
1555         set.num_connectors = crtc_req->count_connectors;
1556         set.fb =fb;
1557         ret = crtc->funcs->set_config(&set);
1558
1559 out:
1560         kfree(connector_set);
1561         mutex_unlock(&dev->mode_config.mutex);
1562         return ret;
1563 }
1564
1565 int drm_mode_cursor_ioctl(struct drm_device *dev,
1566                         void *data, struct drm_file *file_priv)
1567 {
1568         struct drm_mode_cursor *req = data;
1569         struct drm_mode_object *obj;
1570         struct drm_crtc *crtc;
1571         int ret = 0;
1572
1573         DRM_DEBUG_KMS("\n");
1574
1575         if (!req->flags) {
1576                 DRM_ERROR("no operation set\n");
1577                 return -EINVAL;
1578         }
1579
1580         mutex_lock(&dev->mode_config.mutex);
1581         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1582         if (!obj) {
1583                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1584                 ret = -EINVAL;
1585                 goto out;
1586         }
1587         crtc = obj_to_crtc(obj);
1588
1589         if (req->flags & DRM_MODE_CURSOR_BO) {
1590                 if (!crtc->funcs->cursor_set) {
1591                         DRM_ERROR("crtc does not support cursor\n");
1592                         ret = -ENXIO;
1593                         goto out;
1594                 }
1595                 /* Turns off the cursor if handle is 0 */
1596                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1597                                               req->width, req->height);
1598         }
1599
1600         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1601                 if (crtc->funcs->cursor_move) {
1602                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1603                 } else {
1604                         DRM_ERROR("crtc does not support cursor\n");
1605                         ret = -EFAULT;
1606                         goto out;
1607                 }
1608         }
1609 out:
1610         mutex_unlock(&dev->mode_config.mutex);
1611         return ret;
1612 }
1613
1614 /**
1615  * drm_mode_addfb - add an FB to the graphics configuration
1616  * @inode: inode from the ioctl
1617  * @filp: file * from the ioctl
1618  * @cmd: cmd from ioctl
1619  * @arg: arg from ioctl
1620  *
1621  * LOCKING:
1622  * Takes mode config lock.
1623  *
1624  * Add a new FB to the specified CRTC, given a user request.
1625  *
1626  * Called by the user via ioctl.
1627  *
1628  * RETURNS:
1629  * Zero on success, errno on failure.
1630  */
1631 int drm_mode_addfb(struct drm_device *dev,
1632                    void *data, struct drm_file *file_priv)
1633 {
1634         struct drm_mode_fb_cmd *r = data;
1635         struct drm_mode_config *config = &dev->mode_config;
1636         struct drm_framebuffer *fb;
1637         int ret = 0;
1638
1639         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1640                 DRM_ERROR("mode new framebuffer width not within limits\n");
1641                 return -EINVAL;
1642         }
1643         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1644                 DRM_ERROR("mode new framebuffer height not within limits\n");
1645                 return -EINVAL;
1646         }
1647
1648         mutex_lock(&dev->mode_config.mutex);
1649
1650         /* TODO check buffer is sufficently large */
1651         /* TODO setup destructor callback */
1652
1653         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1654         if (!fb) {
1655                 DRM_ERROR("could not create framebuffer\n");
1656                 ret = -EINVAL;
1657                 goto out;
1658         }
1659
1660         r->fb_id = fb->base.id;
1661         list_add(&fb->filp_head, &file_priv->fbs);
1662
1663 out:
1664         mutex_unlock(&dev->mode_config.mutex);
1665         return ret;
1666 }
1667
1668 /**
1669  * drm_mode_rmfb - remove an FB from the configuration
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  * Takes mode config lock.
1677  *
1678  * Remove the FB specified by the user.
1679  *
1680  * Called by the user via ioctl.
1681  *
1682  * RETURNS:
1683  * Zero on success, errno on failure.
1684  */
1685 int drm_mode_rmfb(struct drm_device *dev,
1686                    void *data, struct drm_file *file_priv)
1687 {
1688         struct drm_mode_object *obj;
1689         struct drm_framebuffer *fb = NULL;
1690         struct drm_framebuffer *fbl = NULL;
1691         uint32_t *id = data;
1692         int ret = 0;
1693         int found = 0;
1694
1695         mutex_lock(&dev->mode_config.mutex);
1696         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1697         /* TODO check that we realy get a framebuffer back. */
1698         if (!obj) {
1699                 DRM_ERROR("mode invalid framebuffer id\n");
1700                 ret = -EINVAL;
1701                 goto out;
1702         }
1703         fb = obj_to_fb(obj);
1704
1705         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1706                 if (fb == fbl)
1707                         found = 1;
1708
1709         if (!found) {
1710                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1711                 ret = -EINVAL;
1712                 goto out;
1713         }
1714
1715         /* TODO release all crtc connected to the framebuffer */
1716         /* TODO unhock the destructor from the buffer object */
1717
1718         list_del(&fb->filp_head);
1719         fb->funcs->destroy(fb);
1720
1721 out:
1722         mutex_unlock(&dev->mode_config.mutex);
1723         return ret;
1724 }
1725
1726 /**
1727  * drm_mode_getfb - get FB info
1728  * @inode: inode from the ioctl
1729  * @filp: file * from the ioctl
1730  * @cmd: cmd from ioctl
1731  * @arg: arg from ioctl
1732  *
1733  * LOCKING:
1734  * Caller? (FIXME)
1735  *
1736  * Lookup the FB given its ID and return info about it.
1737  *
1738  * Called by the user via ioctl.
1739  *
1740  * RETURNS:
1741  * Zero on success, errno on failure.
1742  */
1743 int drm_mode_getfb(struct drm_device *dev,
1744                    void *data, struct drm_file *file_priv)
1745 {
1746         struct drm_mode_fb_cmd *r = data;
1747         struct drm_mode_object *obj;
1748         struct drm_framebuffer *fb;
1749         int ret = 0;
1750
1751         mutex_lock(&dev->mode_config.mutex);
1752         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1753         if (!obj) {
1754                 DRM_ERROR("invalid framebuffer id\n");
1755                 ret = -EINVAL;
1756                 goto out;
1757         }
1758         fb = obj_to_fb(obj);
1759
1760         r->height = fb->height;
1761         r->width = fb->width;
1762         r->depth = fb->depth;
1763         r->bpp = fb->bits_per_pixel;
1764         r->pitch = fb->pitch;
1765         fb->funcs->create_handle(fb, file_priv, &r->handle);
1766
1767 out:
1768         mutex_unlock(&dev->mode_config.mutex);
1769         return ret;
1770 }
1771
1772 /**
1773  * drm_fb_release - remove and free the FBs on this file
1774  * @filp: file * from the ioctl
1775  *
1776  * LOCKING:
1777  * Takes mode config lock.
1778  *
1779  * Destroy all the FBs associated with @filp.
1780  *
1781  * Called by the user via ioctl.
1782  *
1783  * RETURNS:
1784  * Zero on success, errno on failure.
1785  */
1786 void drm_fb_release(struct drm_file *priv)
1787 {
1788         struct drm_device *dev = priv->minor->dev;
1789         struct drm_framebuffer *fb, *tfb;
1790
1791         mutex_lock(&dev->mode_config.mutex);
1792         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1793                 list_del(&fb->filp_head);
1794                 fb->funcs->destroy(fb);
1795         }
1796         mutex_unlock(&dev->mode_config.mutex);
1797 }
1798
1799 /**
1800  * drm_mode_attachmode - add a mode to the user mode list
1801  * @dev: DRM device
1802  * @connector: connector to add the mode to
1803  * @mode: mode to add
1804  *
1805  * Add @mode to @connector's user mode list.
1806  */
1807 static int drm_mode_attachmode(struct drm_device *dev,
1808                                struct drm_connector *connector,
1809                                struct drm_display_mode *mode)
1810 {
1811         int ret = 0;
1812
1813         list_add_tail(&mode->head, &connector->user_modes);
1814         return ret;
1815 }
1816
1817 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1818                              struct drm_display_mode *mode)
1819 {
1820         struct drm_connector *connector;
1821         int ret = 0;
1822         struct drm_display_mode *dup_mode;
1823         int need_dup = 0;
1824         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1825                 if (!connector->encoder)
1826                         break;
1827                 if (connector->encoder->crtc == crtc) {
1828                         if (need_dup)
1829                                 dup_mode = drm_mode_duplicate(dev, mode);
1830                         else
1831                                 dup_mode = mode;
1832                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1833                         if (ret)
1834                                 return ret;
1835                         need_dup = 1;
1836                 }
1837         }
1838         return 0;
1839 }
1840 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1841
1842 static int drm_mode_detachmode(struct drm_device *dev,
1843                                struct drm_connector *connector,
1844                                struct drm_display_mode *mode)
1845 {
1846         int found = 0;
1847         int ret = 0;
1848         struct drm_display_mode *match_mode, *t;
1849
1850         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1851                 if (drm_mode_equal(match_mode, mode)) {
1852                         list_del(&match_mode->head);
1853                         drm_mode_destroy(dev, match_mode);
1854                         found = 1;
1855                         break;
1856                 }
1857         }
1858
1859         if (!found)
1860                 ret = -EINVAL;
1861
1862         return ret;
1863 }
1864
1865 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1866 {
1867         struct drm_connector *connector;
1868
1869         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1870                 drm_mode_detachmode(dev, connector, mode);
1871         }
1872         return 0;
1873 }
1874 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1875
1876 /**
1877  * drm_fb_attachmode - Attach a user mode to an connector
1878  * @inode: inode from the ioctl
1879  * @filp: file * from the ioctl
1880  * @cmd: cmd from ioctl
1881  * @arg: arg from ioctl
1882  *
1883  * This attaches a user specified mode to an connector.
1884  * Called by the user via ioctl.
1885  *
1886  * RETURNS:
1887  * Zero on success, errno on failure.
1888  */
1889 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1890                               void *data, struct drm_file *file_priv)
1891 {
1892         struct drm_mode_mode_cmd *mode_cmd = data;
1893         struct drm_connector *connector;
1894         struct drm_display_mode *mode;
1895         struct drm_mode_object *obj;
1896         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1897         int ret = 0;
1898
1899         mutex_lock(&dev->mode_config.mutex);
1900
1901         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1902         if (!obj) {
1903                 ret = -EINVAL;
1904                 goto out;
1905         }
1906         connector = obj_to_connector(obj);
1907
1908         mode = drm_mode_create(dev);
1909         if (!mode) {
1910                 ret = -ENOMEM;
1911                 goto out;
1912         }
1913
1914         drm_crtc_convert_umode(mode, umode);
1915
1916         ret = drm_mode_attachmode(dev, connector, mode);
1917 out:
1918         mutex_unlock(&dev->mode_config.mutex);
1919         return ret;
1920 }
1921
1922
1923 /**
1924  * drm_fb_detachmode - Detach a user specified mode from an connector
1925  * @inode: inode from the ioctl
1926  * @filp: file * from the ioctl
1927  * @cmd: cmd from ioctl
1928  * @arg: arg from ioctl
1929  *
1930  * Called by the user via ioctl.
1931  *
1932  * RETURNS:
1933  * Zero on success, errno on failure.
1934  */
1935 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1936                               void *data, struct drm_file *file_priv)
1937 {
1938         struct drm_mode_object *obj;
1939         struct drm_mode_mode_cmd *mode_cmd = data;
1940         struct drm_connector *connector;
1941         struct drm_display_mode mode;
1942         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1943         int ret = 0;
1944
1945         mutex_lock(&dev->mode_config.mutex);
1946
1947         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1948         if (!obj) {
1949                 ret = -EINVAL;
1950                 goto out;
1951         }
1952         connector = obj_to_connector(obj);
1953
1954         drm_crtc_convert_umode(&mode, umode);
1955         ret = drm_mode_detachmode(dev, connector, &mode);
1956 out:
1957         mutex_unlock(&dev->mode_config.mutex);
1958         return ret;
1959 }
1960
1961 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1962                                          const char *name, int num_values)
1963 {
1964         struct drm_property *property = NULL;
1965
1966         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
1967         if (!property)
1968                 return NULL;
1969
1970         if (num_values) {
1971                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1972                 if (!property->values)
1973                         goto fail;
1974         }
1975
1976         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
1977         property->flags = flags;
1978         property->num_values = num_values;
1979         INIT_LIST_HEAD(&property->enum_blob_list);
1980
1981         if (name)
1982                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1983
1984         list_add_tail(&property->head, &dev->mode_config.property_list);
1985         return property;
1986 fail:
1987         kfree(property);
1988         return NULL;
1989 }
1990 EXPORT_SYMBOL(drm_property_create);
1991
1992 int drm_property_add_enum(struct drm_property *property, int index,
1993                           uint64_t value, const char *name)
1994 {
1995         struct drm_property_enum *prop_enum;
1996
1997         if (!(property->flags & DRM_MODE_PROP_ENUM))
1998                 return -EINVAL;
1999
2000         if (!list_empty(&property->enum_blob_list)) {
2001                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2002                         if (prop_enum->value == value) {
2003                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2004                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2005                                 return 0;
2006                         }
2007                 }
2008         }
2009
2010         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2011         if (!prop_enum)
2012                 return -ENOMEM;
2013
2014         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2015         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2016         prop_enum->value = value;
2017
2018         property->values[index] = value;
2019         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2020         return 0;
2021 }
2022 EXPORT_SYMBOL(drm_property_add_enum);
2023
2024 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2025 {
2026         struct drm_property_enum *prop_enum, *pt;
2027
2028         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2029                 list_del(&prop_enum->head);
2030                 kfree(prop_enum);
2031         }
2032
2033         if (property->num_values)
2034                 kfree(property->values);
2035         drm_mode_object_put(dev, &property->base);
2036         list_del(&property->head);
2037         kfree(property);
2038 }
2039 EXPORT_SYMBOL(drm_property_destroy);
2040
2041 int drm_connector_attach_property(struct drm_connector *connector,
2042                                struct drm_property *property, uint64_t init_val)
2043 {
2044         int i;
2045
2046         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2047                 if (connector->property_ids[i] == 0) {
2048                         connector->property_ids[i] = property->base.id;
2049                         connector->property_values[i] = init_val;
2050                         break;
2051                 }
2052         }
2053
2054         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2055                 return -EINVAL;
2056         return 0;
2057 }
2058 EXPORT_SYMBOL(drm_connector_attach_property);
2059
2060 int drm_connector_property_set_value(struct drm_connector *connector,
2061                                   struct drm_property *property, uint64_t value)
2062 {
2063         int i;
2064
2065         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2066                 if (connector->property_ids[i] == property->base.id) {
2067                         connector->property_values[i] = value;
2068                         break;
2069                 }
2070         }
2071
2072         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2073                 return -EINVAL;
2074         return 0;
2075 }
2076 EXPORT_SYMBOL(drm_connector_property_set_value);
2077
2078 int drm_connector_property_get_value(struct drm_connector *connector,
2079                                   struct drm_property *property, uint64_t *val)
2080 {
2081         int i;
2082
2083         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2084                 if (connector->property_ids[i] == property->base.id) {
2085                         *val = connector->property_values[i];
2086                         break;
2087                 }
2088         }
2089
2090         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2091                 return -EINVAL;
2092         return 0;
2093 }
2094 EXPORT_SYMBOL(drm_connector_property_get_value);
2095
2096 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2097                                void *data, struct drm_file *file_priv)
2098 {
2099         struct drm_mode_object *obj;
2100         struct drm_mode_get_property *out_resp = data;
2101         struct drm_property *property;
2102         int enum_count = 0;
2103         int blob_count = 0;
2104         int value_count = 0;
2105         int ret = 0, i;
2106         int copied;
2107         struct drm_property_enum *prop_enum;
2108         struct drm_mode_property_enum __user *enum_ptr;
2109         struct drm_property_blob *prop_blob;
2110         uint32_t *blob_id_ptr;
2111         uint64_t __user *values_ptr;
2112         uint32_t __user *blob_length_ptr;
2113
2114         mutex_lock(&dev->mode_config.mutex);
2115         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2116         if (!obj) {
2117                 ret = -EINVAL;
2118                 goto done;
2119         }
2120         property = obj_to_property(obj);
2121
2122         if (property->flags & DRM_MODE_PROP_ENUM) {
2123                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2124                         enum_count++;
2125         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2126                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2127                         blob_count++;
2128         }
2129
2130         value_count = property->num_values;
2131
2132         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2133         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2134         out_resp->flags = property->flags;
2135
2136         if ((out_resp->count_values >= value_count) && value_count) {
2137                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2138                 for (i = 0; i < value_count; i++) {
2139                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2140                                 ret = -EFAULT;
2141                                 goto done;
2142                         }
2143                 }
2144         }
2145         out_resp->count_values = value_count;
2146
2147         if (property->flags & DRM_MODE_PROP_ENUM) {
2148                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2149                         copied = 0;
2150                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2151                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2152
2153                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2154                                         ret = -EFAULT;
2155                                         goto done;
2156                                 }
2157
2158                                 if (copy_to_user(&enum_ptr[copied].name,
2159                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2160                                         ret = -EFAULT;
2161                                         goto done;
2162                                 }
2163                                 copied++;
2164                         }
2165                 }
2166                 out_resp->count_enum_blobs = enum_count;
2167         }
2168
2169         if (property->flags & DRM_MODE_PROP_BLOB) {
2170                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2171                         copied = 0;
2172                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2173                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2174
2175                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2176                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2177                                         ret = -EFAULT;
2178                                         goto done;
2179                                 }
2180
2181                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2182                                         ret = -EFAULT;
2183                                         goto done;
2184                                 }
2185
2186                                 copied++;
2187                         }
2188                 }
2189                 out_resp->count_enum_blobs = blob_count;
2190         }
2191 done:
2192         mutex_unlock(&dev->mode_config.mutex);
2193         return ret;
2194 }
2195
2196 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2197                                                           void *data)
2198 {
2199         struct drm_property_blob *blob;
2200
2201         if (!length || !data)
2202                 return NULL;
2203
2204         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2205         if (!blob)
2206                 return NULL;
2207
2208         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2209         blob->length = length;
2210
2211         memcpy(blob->data, data, length);
2212
2213         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2214
2215         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2216         return blob;
2217 }
2218
2219 static void drm_property_destroy_blob(struct drm_device *dev,
2220                                struct drm_property_blob *blob)
2221 {
2222         drm_mode_object_put(dev, &blob->base);
2223         list_del(&blob->head);
2224         kfree(blob);
2225 }
2226
2227 int drm_mode_getblob_ioctl(struct drm_device *dev,
2228                            void *data, struct drm_file *file_priv)
2229 {
2230         struct drm_mode_object *obj;
2231         struct drm_mode_get_blob *out_resp = data;
2232         struct drm_property_blob *blob;
2233         int ret = 0;
2234         void *blob_ptr;
2235
2236         mutex_lock(&dev->mode_config.mutex);
2237         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2238         if (!obj) {
2239                 ret = -EINVAL;
2240                 goto done;
2241         }
2242         blob = obj_to_blob(obj);
2243
2244         if (out_resp->length == blob->length) {
2245                 blob_ptr = (void *)(unsigned long)out_resp->data;
2246                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2247                         ret = -EFAULT;
2248                         goto done;
2249                 }
2250         }
2251         out_resp->length = blob->length;
2252
2253 done:
2254         mutex_unlock(&dev->mode_config.mutex);
2255         return ret;
2256 }
2257
2258 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2259                                             struct edid *edid)
2260 {
2261         struct drm_device *dev = connector->dev;
2262         int ret = 0;
2263
2264         if (connector->edid_blob_ptr)
2265                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2266
2267         /* Delete edid, when there is none. */
2268         if (!edid) {
2269                 connector->edid_blob_ptr = NULL;
2270                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2271                 return ret;
2272         }
2273
2274         connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2275
2276         ret = drm_connector_property_set_value(connector,
2277                                                dev->mode_config.edid_property,
2278                                                connector->edid_blob_ptr->base.id);
2279
2280         return ret;
2281 }
2282 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2283
2284 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2285                                        void *data, struct drm_file *file_priv)
2286 {
2287         struct drm_mode_connector_set_property *out_resp = data;
2288         struct drm_mode_object *obj;
2289         struct drm_property *property;
2290         struct drm_connector *connector;
2291         int ret = -EINVAL;
2292         int i;
2293
2294         mutex_lock(&dev->mode_config.mutex);
2295
2296         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2297         if (!obj) {
2298                 goto out;
2299         }
2300         connector = obj_to_connector(obj);
2301
2302         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2303                 if (connector->property_ids[i] == out_resp->prop_id)
2304                         break;
2305         }
2306
2307         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2308                 goto out;
2309         }
2310
2311         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2312         if (!obj) {
2313                 goto out;
2314         }
2315         property = obj_to_property(obj);
2316
2317         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2318                 goto out;
2319
2320         if (property->flags & DRM_MODE_PROP_RANGE) {
2321                 if (out_resp->value < property->values[0])
2322                         goto out;
2323
2324                 if (out_resp->value > property->values[1])
2325                         goto out;
2326         } else {
2327                 int found = 0;
2328                 for (i = 0; i < property->num_values; i++) {
2329                         if (property->values[i] == out_resp->value) {
2330                                 found = 1;
2331                                 break;
2332                         }
2333                 }
2334                 if (!found) {
2335                         goto out;
2336                 }
2337         }
2338
2339         /* Do DPMS ourselves */
2340         if (property == connector->dev->mode_config.dpms_property) {
2341                 if (connector->funcs->dpms)
2342                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2343                 ret = 0;
2344         } else if (connector->funcs->set_property)
2345                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2346
2347         /* store the property value if succesful */
2348         if (!ret)
2349                 drm_connector_property_set_value(connector, property, out_resp->value);
2350 out:
2351         mutex_unlock(&dev->mode_config.mutex);
2352         return ret;
2353 }
2354
2355 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2356                                       struct drm_encoder *encoder)
2357 {
2358         int i;
2359
2360         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2361                 if (connector->encoder_ids[i] == 0) {
2362                         connector->encoder_ids[i] = encoder->base.id;
2363                         return 0;
2364                 }
2365         }
2366         return -ENOMEM;
2367 }
2368 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2369
2370 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2371                                     struct drm_encoder *encoder)
2372 {
2373         int i;
2374         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2375                 if (connector->encoder_ids[i] == encoder->base.id) {
2376                         connector->encoder_ids[i] = 0;
2377                         if (connector->encoder == encoder)
2378                                 connector->encoder = NULL;
2379                         break;
2380                 }
2381         }
2382 }
2383 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2384
2385 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2386                                   int gamma_size)
2387 {
2388         crtc->gamma_size = gamma_size;
2389
2390         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2391         if (!crtc->gamma_store) {
2392                 crtc->gamma_size = 0;
2393                 return false;
2394         }
2395
2396         return true;
2397 }
2398 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2399
2400 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2401                              void *data, struct drm_file *file_priv)
2402 {
2403         struct drm_mode_crtc_lut *crtc_lut = data;
2404         struct drm_mode_object *obj;
2405         struct drm_crtc *crtc;
2406         void *r_base, *g_base, *b_base;
2407         int size;
2408         int ret = 0;
2409
2410         mutex_lock(&dev->mode_config.mutex);
2411         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2412         if (!obj) {
2413                 ret = -EINVAL;
2414                 goto out;
2415         }
2416         crtc = obj_to_crtc(obj);
2417
2418         /* memcpy into gamma store */
2419         if (crtc_lut->gamma_size != crtc->gamma_size) {
2420                 ret = -EINVAL;
2421                 goto out;
2422         }
2423
2424         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2425         r_base = crtc->gamma_store;
2426         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2427                 ret = -EFAULT;
2428                 goto out;
2429         }
2430
2431         g_base = r_base + size;
2432         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2433                 ret = -EFAULT;
2434                 goto out;
2435         }
2436
2437         b_base = g_base + size;
2438         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2439                 ret = -EFAULT;
2440                 goto out;
2441         }
2442
2443         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2444
2445 out:
2446         mutex_unlock(&dev->mode_config.mutex);
2447         return ret;
2448
2449 }
2450
2451 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2452                              void *data, struct drm_file *file_priv)
2453 {
2454         struct drm_mode_crtc_lut *crtc_lut = data;
2455         struct drm_mode_object *obj;
2456         struct drm_crtc *crtc;
2457         void *r_base, *g_base, *b_base;
2458         int size;
2459         int ret = 0;
2460
2461         mutex_lock(&dev->mode_config.mutex);
2462         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2463         if (!obj) {
2464                 ret = -EINVAL;
2465                 goto out;
2466         }
2467         crtc = obj_to_crtc(obj);
2468
2469         /* memcpy into gamma store */
2470         if (crtc_lut->gamma_size != crtc->gamma_size) {
2471                 ret = -EINVAL;
2472                 goto out;
2473         }
2474
2475         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2476         r_base = crtc->gamma_store;
2477         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2478                 ret = -EFAULT;
2479                 goto out;
2480         }
2481
2482         g_base = r_base + size;
2483         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2484                 ret = -EFAULT;
2485                 goto out;
2486         }
2487
2488         b_base = g_base + size;
2489         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2490                 ret = -EFAULT;
2491                 goto out;
2492         }
2493 out:
2494         mutex_unlock(&dev->mode_config.mutex);
2495         return ret;
2496 }