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