drm_crtc.c revision ad2563c2e42fc67b0976aeb70e9f3faf1c1196e8
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 37struct 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 */ 57static 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 64DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 65 66/* 67 * Optional properties 68 */ 69static 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 77static 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 */ 86static 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 93DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 94 95static 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 102DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 103 drm_dvi_i_subconnector_enum_list) 104 105static 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 113DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 114 115static 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 123DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 124 drm_tv_subconnector_enum_list) 125 126struct drm_conn_prop_enum_list { 127 int type; 128 char *name; 129 int count; 130}; 131 132/* 133 * Connector and encoder types. 134 */ 135static 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 151static 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 159char *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 169char *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} 178EXPORT_SYMBOL(drm_get_connector_name); 179 180char *drm_get_connector_status_name(enum drm_connector_status status) 181{ 182 if (status == connector_status_connected) 183 return "connected"; 184 else if (status == connector_status_disconnected) 185 return "disconnected"; 186 else 187 return "unknown"; 188} 189 190/** 191 * drm_mode_object_get - allocate a new identifier 192 * @dev: DRM device 193 * @ptr: object pointer, used to generate unique ID 194 * @type: object type 195 * 196 * LOCKING: 197 * 198 * Create a unique identifier based on @ptr in @dev's identifier space. Used 199 * for tracking modes, CRTCs and connectors. 200 * 201 * RETURNS: 202 * New unique (relative to other objects in @dev) integer identifier for the 203 * object. 204 */ 205static int drm_mode_object_get(struct drm_device *dev, 206 struct drm_mode_object *obj, uint32_t obj_type) 207{ 208 int new_id = 0; 209 int ret; 210 211again: 212 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) { 213 DRM_ERROR("Ran out memory getting a mode number\n"); 214 return -EINVAL; 215 } 216 217 mutex_lock(&dev->mode_config.idr_mutex); 218 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id); 219 mutex_unlock(&dev->mode_config.idr_mutex); 220 if (ret == -EAGAIN) 221 goto again; 222 223 obj->id = new_id; 224 obj->type = obj_type; 225 return 0; 226} 227 228/** 229 * drm_mode_object_put - free an identifer 230 * @dev: DRM device 231 * @id: ID to free 232 * 233 * LOCKING: 234 * Caller must hold DRM mode_config lock. 235 * 236 * Free @id from @dev's unique identifier pool. 237 */ 238static void drm_mode_object_put(struct drm_device *dev, 239 struct drm_mode_object *object) 240{ 241 mutex_lock(&dev->mode_config.idr_mutex); 242 idr_remove(&dev->mode_config.crtc_idr, object->id); 243 mutex_unlock(&dev->mode_config.idr_mutex); 244} 245 246void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type) 247{ 248 struct drm_mode_object *obj = NULL; 249 250 mutex_lock(&dev->mode_config.idr_mutex); 251 obj = idr_find(&dev->mode_config.crtc_idr, id); 252 if (!obj || (obj->type != type) || (obj->id != id)) 253 obj = NULL; 254 mutex_unlock(&dev->mode_config.idr_mutex); 255 256 return obj; 257} 258EXPORT_SYMBOL(drm_mode_object_find); 259 260/** 261 * drm_crtc_from_fb - find the CRTC structure associated with an fb 262 * @dev: DRM device 263 * @fb: framebuffer in question 264 * 265 * LOCKING: 266 * Caller must hold mode_config lock. 267 * 268 * Find CRTC in the mode_config structure that matches @fb. 269 * 270 * RETURNS: 271 * Pointer to the CRTC or NULL if it wasn't found. 272 */ 273struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev, 274 struct drm_framebuffer *fb) 275{ 276 struct drm_crtc *crtc; 277 278 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 279 if (crtc->fb == fb) 280 return crtc; 281 } 282 return NULL; 283} 284 285/** 286 * drm_framebuffer_init - initialize a framebuffer 287 * @dev: DRM device 288 * 289 * LOCKING: 290 * Caller must hold mode config lock. 291 * 292 * Allocates an ID for the framebuffer's parent mode object, sets its mode 293 * functions & device file and adds it to the master fd list. 294 * 295 * RETURNS: 296 * Zero on success, error code on falure. 297 */ 298int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 299 const struct drm_framebuffer_funcs *funcs) 300{ 301 int ret; 302 303 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 304 if (ret) { 305 return ret; 306 } 307 308 fb->dev = dev; 309 fb->funcs = funcs; 310 dev->mode_config.num_fb++; 311 list_add(&fb->head, &dev->mode_config.fb_list); 312 313 return 0; 314} 315EXPORT_SYMBOL(drm_framebuffer_init); 316 317/** 318 * drm_framebuffer_cleanup - remove a framebuffer object 319 * @fb: framebuffer to remove 320 * 321 * LOCKING: 322 * Caller must hold mode config lock. 323 * 324 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes 325 * it, setting it to NULL. 326 */ 327void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 328{ 329 struct drm_device *dev = fb->dev; 330 struct drm_crtc *crtc; 331 332 /* remove from any CRTC */ 333 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 334 if (crtc->fb == fb) 335 crtc->fb = NULL; 336 } 337 338 drm_mode_object_put(dev, &fb->base); 339 list_del(&fb->head); 340 dev->mode_config.num_fb--; 341} 342EXPORT_SYMBOL(drm_framebuffer_cleanup); 343 344/** 345 * drm_crtc_init - Initialise a new CRTC object 346 * @dev: DRM device 347 * @crtc: CRTC object to init 348 * @funcs: callbacks for the new CRTC 349 * 350 * LOCKING: 351 * Caller must hold mode config lock. 352 * 353 * Inits a new object created as base part of an driver crtc object. 354 */ 355void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 356 const struct drm_crtc_funcs *funcs) 357{ 358 crtc->dev = dev; 359 crtc->funcs = funcs; 360 361 mutex_lock(&dev->mode_config.mutex); 362 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 363 364 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 365 dev->mode_config.num_crtc++; 366 mutex_unlock(&dev->mode_config.mutex); 367} 368EXPORT_SYMBOL(drm_crtc_init); 369 370/** 371 * drm_crtc_cleanup - Cleans up the core crtc usage. 372 * @crtc: CRTC to cleanup 373 * 374 * LOCKING: 375 * Caller must hold mode config lock. 376 * 377 * Cleanup @crtc. Removes from drm modesetting space 378 * does NOT free object, caller does that. 379 */ 380void drm_crtc_cleanup(struct drm_crtc *crtc) 381{ 382 struct drm_device *dev = crtc->dev; 383 384 if (crtc->gamma_store) { 385 kfree(crtc->gamma_store); 386 crtc->gamma_store = NULL; 387 } 388 389 drm_mode_object_put(dev, &crtc->base); 390 list_del(&crtc->head); 391 dev->mode_config.num_crtc--; 392} 393EXPORT_SYMBOL(drm_crtc_cleanup); 394 395/** 396 * drm_mode_probed_add - add a mode to a connector's probed mode list 397 * @connector: connector the new mode 398 * @mode: mode data 399 * 400 * LOCKING: 401 * Caller must hold mode config lock. 402 * 403 * Add @mode to @connector's mode list for later use. 404 */ 405void drm_mode_probed_add(struct drm_connector *connector, 406 struct drm_display_mode *mode) 407{ 408 list_add(&mode->head, &connector->probed_modes); 409} 410EXPORT_SYMBOL(drm_mode_probed_add); 411 412/** 413 * drm_mode_remove - remove and free a mode 414 * @connector: connector list to modify 415 * @mode: mode to remove 416 * 417 * LOCKING: 418 * Caller must hold mode config lock. 419 * 420 * Remove @mode from @connector's mode list, then free it. 421 */ 422void drm_mode_remove(struct drm_connector *connector, 423 struct drm_display_mode *mode) 424{ 425 list_del(&mode->head); 426 kfree(mode); 427} 428EXPORT_SYMBOL(drm_mode_remove); 429 430/** 431 * drm_connector_init - Init a preallocated connector 432 * @dev: DRM device 433 * @connector: the connector to init 434 * @funcs: callbacks for this connector 435 * @name: user visible name of the connector 436 * 437 * LOCKING: 438 * Caller must hold @dev's mode_config lock. 439 * 440 * Initialises a preallocated connector. Connectors should be 441 * subclassed as part of driver connector objects. 442 */ 443void drm_connector_init(struct drm_device *dev, 444 struct drm_connector *connector, 445 const struct drm_connector_funcs *funcs, 446 int connector_type) 447{ 448 mutex_lock(&dev->mode_config.mutex); 449 450 connector->dev = dev; 451 connector->funcs = funcs; 452 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 453 connector->connector_type = connector_type; 454 connector->connector_type_id = 455 ++drm_connector_enum_list[connector_type].count; /* TODO */ 456 INIT_LIST_HEAD(&connector->user_modes); 457 INIT_LIST_HEAD(&connector->probed_modes); 458 INIT_LIST_HEAD(&connector->modes); 459 connector->edid_blob_ptr = NULL; 460 461 list_add_tail(&connector->head, &dev->mode_config.connector_list); 462 dev->mode_config.num_connector++; 463 464 drm_connector_attach_property(connector, 465 dev->mode_config.edid_property, 0); 466 467 drm_connector_attach_property(connector, 468 dev->mode_config.dpms_property, 0); 469 470 mutex_unlock(&dev->mode_config.mutex); 471} 472EXPORT_SYMBOL(drm_connector_init); 473 474/** 475 * drm_connector_cleanup - cleans up an initialised connector 476 * @connector: connector to cleanup 477 * 478 * LOCKING: 479 * Caller must hold @dev's mode_config lock. 480 * 481 * Cleans up the connector but doesn't free the object. 482 */ 483void drm_connector_cleanup(struct drm_connector *connector) 484{ 485 struct drm_device *dev = connector->dev; 486 struct drm_display_mode *mode, *t; 487 488 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 489 drm_mode_remove(connector, mode); 490 491 list_for_each_entry_safe(mode, t, &connector->modes, head) 492 drm_mode_remove(connector, mode); 493 494 list_for_each_entry_safe(mode, t, &connector->user_modes, head) 495 drm_mode_remove(connector, mode); 496 497 mutex_lock(&dev->mode_config.mutex); 498 drm_mode_object_put(dev, &connector->base); 499 list_del(&connector->head); 500 mutex_unlock(&dev->mode_config.mutex); 501} 502EXPORT_SYMBOL(drm_connector_cleanup); 503 504void drm_encoder_init(struct drm_device *dev, 505 struct drm_encoder *encoder, 506 const struct drm_encoder_funcs *funcs, 507 int encoder_type) 508{ 509 mutex_lock(&dev->mode_config.mutex); 510 511 encoder->dev = dev; 512 513 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 514 encoder->encoder_type = encoder_type; 515 encoder->funcs = funcs; 516 517 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 518 dev->mode_config.num_encoder++; 519 520 mutex_unlock(&dev->mode_config.mutex); 521} 522EXPORT_SYMBOL(drm_encoder_init); 523 524void drm_encoder_cleanup(struct drm_encoder *encoder) 525{ 526 struct drm_device *dev = encoder->dev; 527 mutex_lock(&dev->mode_config.mutex); 528 drm_mode_object_put(dev, &encoder->base); 529 list_del(&encoder->head); 530 mutex_unlock(&dev->mode_config.mutex); 531} 532EXPORT_SYMBOL(drm_encoder_cleanup); 533 534/** 535 * drm_mode_create - create a new display mode 536 * @dev: DRM device 537 * 538 * LOCKING: 539 * Caller must hold DRM mode_config lock. 540 * 541 * Create a new drm_display_mode, give it an ID, and return it. 542 * 543 * RETURNS: 544 * Pointer to new mode on success, NULL on error. 545 */ 546struct drm_display_mode *drm_mode_create(struct drm_device *dev) 547{ 548 struct drm_display_mode *nmode; 549 550 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 551 if (!nmode) 552 return NULL; 553 554 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE); 555 return nmode; 556} 557EXPORT_SYMBOL(drm_mode_create); 558 559/** 560 * drm_mode_destroy - remove a mode 561 * @dev: DRM device 562 * @mode: mode to remove 563 * 564 * LOCKING: 565 * Caller must hold mode config lock. 566 * 567 * Free @mode's unique identifier, then free it. 568 */ 569void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 570{ 571 drm_mode_object_put(dev, &mode->base); 572 573 kfree(mode); 574} 575EXPORT_SYMBOL(drm_mode_destroy); 576 577static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 578{ 579 struct drm_property *edid; 580 struct drm_property *dpms; 581 int i; 582 583 /* 584 * Standard properties (apply to all connectors) 585 */ 586 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 587 DRM_MODE_PROP_IMMUTABLE, 588 "EDID", 0); 589 dev->mode_config.edid_property = edid; 590 591 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM, 592 "DPMS", ARRAY_SIZE(drm_dpms_enum_list)); 593 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++) 594 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type, 595 drm_dpms_enum_list[i].name); 596 dev->mode_config.dpms_property = dpms; 597 598 return 0; 599} 600 601/** 602 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 603 * @dev: DRM device 604 * 605 * Called by a driver the first time a DVI-I connector is made. 606 */ 607int drm_mode_create_dvi_i_properties(struct drm_device *dev) 608{ 609 struct drm_property *dvi_i_selector; 610 struct drm_property *dvi_i_subconnector; 611 int i; 612 613 if (dev->mode_config.dvi_i_select_subconnector_property) 614 return 0; 615 616 dvi_i_selector = 617 drm_property_create(dev, DRM_MODE_PROP_ENUM, 618 "select subconnector", 619 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 620 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++) 621 drm_property_add_enum(dvi_i_selector, i, 622 drm_dvi_i_select_enum_list[i].type, 623 drm_dvi_i_select_enum_list[i].name); 624 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 625 626 dvi_i_subconnector = 627 drm_property_create(dev, DRM_MODE_PROP_ENUM | 628 DRM_MODE_PROP_IMMUTABLE, 629 "subconnector", 630 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 631 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++) 632 drm_property_add_enum(dvi_i_subconnector, i, 633 drm_dvi_i_subconnector_enum_list[i].type, 634 drm_dvi_i_subconnector_enum_list[i].name); 635 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 636 637 return 0; 638} 639EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 640 641/** 642 * drm_create_tv_properties - create TV specific connector properties 643 * @dev: DRM device 644 * @num_modes: number of different TV formats (modes) supported 645 * @modes: array of pointers to strings containing name of each format 646 * 647 * Called by a driver's TV initialization routine, this function creates 648 * the TV specific connector properties for a given device. Caller is 649 * responsible for allocating a list of format names and passing them to 650 * this routine. 651 */ 652int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 653 char *modes[]) 654{ 655 struct drm_property *tv_selector; 656 struct drm_property *tv_subconnector; 657 int i; 658 659 if (dev->mode_config.tv_select_subconnector_property) 660 return 0; 661 662 /* 663 * Basic connector properties 664 */ 665 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM, 666 "select subconnector", 667 ARRAY_SIZE(drm_tv_select_enum_list)); 668 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++) 669 drm_property_add_enum(tv_selector, i, 670 drm_tv_select_enum_list[i].type, 671 drm_tv_select_enum_list[i].name); 672 dev->mode_config.tv_select_subconnector_property = tv_selector; 673 674 tv_subconnector = 675 drm_property_create(dev, DRM_MODE_PROP_ENUM | 676 DRM_MODE_PROP_IMMUTABLE, "subconnector", 677 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 678 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++) 679 drm_property_add_enum(tv_subconnector, i, 680 drm_tv_subconnector_enum_list[i].type, 681 drm_tv_subconnector_enum_list[i].name); 682 dev->mode_config.tv_subconnector_property = tv_subconnector; 683 684 /* 685 * Other, TV specific properties: margins & TV modes. 686 */ 687 dev->mode_config.tv_left_margin_property = 688 drm_property_create(dev, DRM_MODE_PROP_RANGE, 689 "left margin", 2); 690 dev->mode_config.tv_left_margin_property->values[0] = 0; 691 dev->mode_config.tv_left_margin_property->values[1] = 100; 692 693 dev->mode_config.tv_right_margin_property = 694 drm_property_create(dev, DRM_MODE_PROP_RANGE, 695 "right margin", 2); 696 dev->mode_config.tv_right_margin_property->values[0] = 0; 697 dev->mode_config.tv_right_margin_property->values[1] = 100; 698 699 dev->mode_config.tv_top_margin_property = 700 drm_property_create(dev, DRM_MODE_PROP_RANGE, 701 "top margin", 2); 702 dev->mode_config.tv_top_margin_property->values[0] = 0; 703 dev->mode_config.tv_top_margin_property->values[1] = 100; 704 705 dev->mode_config.tv_bottom_margin_property = 706 drm_property_create(dev, DRM_MODE_PROP_RANGE, 707 "bottom margin", 2); 708 dev->mode_config.tv_bottom_margin_property->values[0] = 0; 709 dev->mode_config.tv_bottom_margin_property->values[1] = 100; 710 711 dev->mode_config.tv_mode_property = 712 drm_property_create(dev, DRM_MODE_PROP_ENUM, 713 "mode", num_modes); 714 for (i = 0; i < num_modes; i++) 715 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 716 i, modes[i]); 717 718 return 0; 719} 720EXPORT_SYMBOL(drm_mode_create_tv_properties); 721 722/** 723 * drm_mode_create_scaling_mode_property - create scaling mode property 724 * @dev: DRM device 725 * 726 * Called by a driver the first time it's needed, must be attached to desired 727 * connectors. 728 */ 729int drm_mode_create_scaling_mode_property(struct drm_device *dev) 730{ 731 struct drm_property *scaling_mode; 732 int i; 733 734 if (dev->mode_config.scaling_mode_property) 735 return 0; 736 737 scaling_mode = 738 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", 739 ARRAY_SIZE(drm_scaling_mode_enum_list)); 740 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) 741 drm_property_add_enum(scaling_mode, i, 742 drm_scaling_mode_enum_list[i].type, 743 drm_scaling_mode_enum_list[i].name); 744 745 dev->mode_config.scaling_mode_property = scaling_mode; 746 747 return 0; 748} 749EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 750 751/** 752 * drm_mode_create_dithering_property - create dithering property 753 * @dev: DRM device 754 * 755 * Called by a driver the first time it's needed, must be attached to desired 756 * connectors. 757 */ 758int drm_mode_create_dithering_property(struct drm_device *dev) 759{ 760 struct drm_property *dithering_mode; 761 int i; 762 763 if (dev->mode_config.dithering_mode_property) 764 return 0; 765 766 dithering_mode = 767 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering", 768 ARRAY_SIZE(drm_dithering_mode_enum_list)); 769 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++) 770 drm_property_add_enum(dithering_mode, i, 771 drm_dithering_mode_enum_list[i].type, 772 drm_dithering_mode_enum_list[i].name); 773 dev->mode_config.dithering_mode_property = dithering_mode; 774 775 return 0; 776} 777EXPORT_SYMBOL(drm_mode_create_dithering_property); 778 779/** 780 * drm_mode_config_init - initialize DRM mode_configuration structure 781 * @dev: DRM device 782 * 783 * LOCKING: 784 * None, should happen single threaded at init time. 785 * 786 * Initialize @dev's mode_config structure, used for tracking the graphics 787 * configuration of @dev. 788 */ 789void drm_mode_config_init(struct drm_device *dev) 790{ 791 mutex_init(&dev->mode_config.mutex); 792 mutex_init(&dev->mode_config.idr_mutex); 793 INIT_LIST_HEAD(&dev->mode_config.fb_list); 794 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list); 795 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 796 INIT_LIST_HEAD(&dev->mode_config.connector_list); 797 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 798 INIT_LIST_HEAD(&dev->mode_config.property_list); 799 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 800 idr_init(&dev->mode_config.crtc_idr); 801 802 mutex_lock(&dev->mode_config.mutex); 803 drm_mode_create_standard_connector_properties(dev); 804 mutex_unlock(&dev->mode_config.mutex); 805 806 /* Just to be sure */ 807 dev->mode_config.num_fb = 0; 808 dev->mode_config.num_connector = 0; 809 dev->mode_config.num_crtc = 0; 810 dev->mode_config.num_encoder = 0; 811} 812EXPORT_SYMBOL(drm_mode_config_init); 813 814int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 815{ 816 uint32_t total_objects = 0; 817 818 total_objects += dev->mode_config.num_crtc; 819 total_objects += dev->mode_config.num_connector; 820 total_objects += dev->mode_config.num_encoder; 821 822 if (total_objects == 0) 823 return -EINVAL; 824 825 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 826 if (!group->id_list) 827 return -ENOMEM; 828 829 group->num_crtcs = 0; 830 group->num_connectors = 0; 831 group->num_encoders = 0; 832 return 0; 833} 834 835int drm_mode_group_init_legacy_group(struct drm_device *dev, 836 struct drm_mode_group *group) 837{ 838 struct drm_crtc *crtc; 839 struct drm_encoder *encoder; 840 struct drm_connector *connector; 841 int ret; 842 843 if ((ret = drm_mode_group_init(dev, group))) 844 return ret; 845 846 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 847 group->id_list[group->num_crtcs++] = crtc->base.id; 848 849 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 850 group->id_list[group->num_crtcs + group->num_encoders++] = 851 encoder->base.id; 852 853 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 854 group->id_list[group->num_crtcs + group->num_encoders + 855 group->num_connectors++] = connector->base.id; 856 857 return 0; 858} 859 860/** 861 * drm_mode_config_cleanup - free up DRM mode_config info 862 * @dev: DRM device 863 * 864 * LOCKING: 865 * Caller must hold mode config lock. 866 * 867 * Free up all the connectors and CRTCs associated with this DRM device, then 868 * free up the framebuffers and associated buffer objects. 869 * 870 * FIXME: cleanup any dangling user buffer objects too 871 */ 872void drm_mode_config_cleanup(struct drm_device *dev) 873{ 874 struct drm_connector *connector, *ot; 875 struct drm_crtc *crtc, *ct; 876 struct drm_encoder *encoder, *enct; 877 struct drm_framebuffer *fb, *fbt; 878 struct drm_property *property, *pt; 879 880 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 881 head) { 882 encoder->funcs->destroy(encoder); 883 } 884 885 list_for_each_entry_safe(connector, ot, 886 &dev->mode_config.connector_list, head) { 887 connector->funcs->destroy(connector); 888 } 889 890 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 891 head) { 892 drm_property_destroy(dev, property); 893 } 894 895 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 896 fb->funcs->destroy(fb); 897 } 898 899 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 900 crtc->funcs->destroy(crtc); 901 } 902 903} 904EXPORT_SYMBOL(drm_mode_config_cleanup); 905 906/** 907 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 908 * @out: drm_mode_modeinfo struct to return to the user 909 * @in: drm_display_mode to use 910 * 911 * LOCKING: 912 * None. 913 * 914 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 915 * the user. 916 */ 917void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 918 struct drm_display_mode *in) 919{ 920 out->clock = in->clock; 921 out->hdisplay = in->hdisplay; 922 out->hsync_start = in->hsync_start; 923 out->hsync_end = in->hsync_end; 924 out->htotal = in->htotal; 925 out->hskew = in->hskew; 926 out->vdisplay = in->vdisplay; 927 out->vsync_start = in->vsync_start; 928 out->vsync_end = in->vsync_end; 929 out->vtotal = in->vtotal; 930 out->vscan = in->vscan; 931 out->vrefresh = in->vrefresh; 932 out->flags = in->flags; 933 out->type = in->type; 934 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 935 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 936} 937 938/** 939 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 940 * @out: drm_display_mode to return to the user 941 * @in: drm_mode_modeinfo to use 942 * 943 * LOCKING: 944 * None. 945 * 946 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 947 * the caller. 948 */ 949void drm_crtc_convert_umode(struct drm_display_mode *out, 950 struct drm_mode_modeinfo *in) 951{ 952 out->clock = in->clock; 953 out->hdisplay = in->hdisplay; 954 out->hsync_start = in->hsync_start; 955 out->hsync_end = in->hsync_end; 956 out->htotal = in->htotal; 957 out->hskew = in->hskew; 958 out->vdisplay = in->vdisplay; 959 out->vsync_start = in->vsync_start; 960 out->vsync_end = in->vsync_end; 961 out->vtotal = in->vtotal; 962 out->vscan = in->vscan; 963 out->vrefresh = in->vrefresh; 964 out->flags = in->flags; 965 out->type = in->type; 966 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 967 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 968} 969 970/** 971 * drm_mode_getresources - get graphics configuration 972 * @inode: inode from the ioctl 973 * @filp: file * from the ioctl 974 * @cmd: cmd from ioctl 975 * @arg: arg from ioctl 976 * 977 * LOCKING: 978 * Takes mode config lock. 979 * 980 * Construct a set of configuration description structures and return 981 * them to the user, including CRTC, connector and framebuffer configuration. 982 * 983 * Called by the user via ioctl. 984 * 985 * RETURNS: 986 * Zero on success, errno on failure. 987 */ 988int drm_mode_getresources(struct drm_device *dev, void *data, 989 struct drm_file *file_priv) 990{ 991 struct drm_mode_card_res *card_res = data; 992 struct list_head *lh; 993 struct drm_framebuffer *fb; 994 struct drm_connector *connector; 995 struct drm_crtc *crtc; 996 struct drm_encoder *encoder; 997 int ret = 0; 998 int connector_count = 0; 999 int crtc_count = 0; 1000 int fb_count = 0; 1001 int encoder_count = 0; 1002 int copied = 0, i; 1003 uint32_t __user *fb_id; 1004 uint32_t __user *crtc_id; 1005 uint32_t __user *connector_id; 1006 uint32_t __user *encoder_id; 1007 struct drm_mode_group *mode_group; 1008 1009 mutex_lock(&dev->mode_config.mutex); 1010 1011 /* 1012 * For the non-control nodes we need to limit the list of resources 1013 * by IDs in the group list for this node 1014 */ 1015 list_for_each(lh, &file_priv->fbs) 1016 fb_count++; 1017 1018 mode_group = &file_priv->master->minor->mode_group; 1019 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1020 1021 list_for_each(lh, &dev->mode_config.crtc_list) 1022 crtc_count++; 1023 1024 list_for_each(lh, &dev->mode_config.connector_list) 1025 connector_count++; 1026 1027 list_for_each(lh, &dev->mode_config.encoder_list) 1028 encoder_count++; 1029 } else { 1030 1031 crtc_count = mode_group->num_crtcs; 1032 connector_count = mode_group->num_connectors; 1033 encoder_count = mode_group->num_encoders; 1034 } 1035 1036 card_res->max_height = dev->mode_config.max_height; 1037 card_res->min_height = dev->mode_config.min_height; 1038 card_res->max_width = dev->mode_config.max_width; 1039 card_res->min_width = dev->mode_config.min_width; 1040 1041 /* handle this in 4 parts */ 1042 /* FBs */ 1043 if (card_res->count_fbs >= fb_count) { 1044 copied = 0; 1045 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1046 list_for_each_entry(fb, &file_priv->fbs, head) { 1047 if (put_user(fb->base.id, fb_id + copied)) { 1048 ret = -EFAULT; 1049 goto out; 1050 } 1051 copied++; 1052 } 1053 } 1054 card_res->count_fbs = fb_count; 1055 1056 /* CRTCs */ 1057 if (card_res->count_crtcs >= crtc_count) { 1058 copied = 0; 1059 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1060 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1061 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1062 head) { 1063 DRM_DEBUG("CRTC ID is %d\n", crtc->base.id); 1064 if (put_user(crtc->base.id, crtc_id + copied)) { 1065 ret = -EFAULT; 1066 goto out; 1067 } 1068 copied++; 1069 } 1070 } else { 1071 for (i = 0; i < mode_group->num_crtcs; i++) { 1072 if (put_user(mode_group->id_list[i], 1073 crtc_id + copied)) { 1074 ret = -EFAULT; 1075 goto out; 1076 } 1077 copied++; 1078 } 1079 } 1080 } 1081 card_res->count_crtcs = crtc_count; 1082 1083 /* Encoders */ 1084 if (card_res->count_encoders >= encoder_count) { 1085 copied = 0; 1086 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1087 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1088 list_for_each_entry(encoder, 1089 &dev->mode_config.encoder_list, 1090 head) { 1091 DRM_DEBUG("ENCODER ID is %d\n", 1092 encoder->base.id); 1093 if (put_user(encoder->base.id, encoder_id + 1094 copied)) { 1095 ret = -EFAULT; 1096 goto out; 1097 } 1098 copied++; 1099 } 1100 } else { 1101 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1102 if (put_user(mode_group->id_list[i], 1103 encoder_id + copied)) { 1104 ret = -EFAULT; 1105 goto out; 1106 } 1107 copied++; 1108 } 1109 1110 } 1111 } 1112 card_res->count_encoders = encoder_count; 1113 1114 /* Connectors */ 1115 if (card_res->count_connectors >= connector_count) { 1116 copied = 0; 1117 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1118 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1119 list_for_each_entry(connector, 1120 &dev->mode_config.connector_list, 1121 head) { 1122 DRM_DEBUG("CONNECTOR ID is %d\n", 1123 connector->base.id); 1124 if (put_user(connector->base.id, 1125 connector_id + copied)) { 1126 ret = -EFAULT; 1127 goto out; 1128 } 1129 copied++; 1130 } 1131 } else { 1132 int start = mode_group->num_crtcs + 1133 mode_group->num_encoders; 1134 for (i = start; i < start + mode_group->num_connectors; i++) { 1135 if (put_user(mode_group->id_list[i], 1136 connector_id + copied)) { 1137 ret = -EFAULT; 1138 goto out; 1139 } 1140 copied++; 1141 } 1142 } 1143 } 1144 card_res->count_connectors = connector_count; 1145 1146 DRM_DEBUG("Counted %d %d %d\n", card_res->count_crtcs, 1147 card_res->count_connectors, card_res->count_encoders); 1148 1149out: 1150 mutex_unlock(&dev->mode_config.mutex); 1151 return ret; 1152} 1153 1154/** 1155 * drm_mode_getcrtc - get CRTC configuration 1156 * @inode: inode from the ioctl 1157 * @filp: file * from the ioctl 1158 * @cmd: cmd from ioctl 1159 * @arg: arg from ioctl 1160 * 1161 * LOCKING: 1162 * Caller? (FIXME) 1163 * 1164 * Construct a CRTC configuration structure to return to the user. 1165 * 1166 * Called by the user via ioctl. 1167 * 1168 * RETURNS: 1169 * Zero on success, errno on failure. 1170 */ 1171int drm_mode_getcrtc(struct drm_device *dev, 1172 void *data, struct drm_file *file_priv) 1173{ 1174 struct drm_mode_crtc *crtc_resp = data; 1175 struct drm_crtc *crtc; 1176 struct drm_mode_object *obj; 1177 int ret = 0; 1178 1179 mutex_lock(&dev->mode_config.mutex); 1180 1181 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1182 DRM_MODE_OBJECT_CRTC); 1183 if (!obj) { 1184 ret = -EINVAL; 1185 goto out; 1186 } 1187 crtc = obj_to_crtc(obj); 1188 1189 crtc_resp->x = crtc->x; 1190 crtc_resp->y = crtc->y; 1191 crtc_resp->gamma_size = crtc->gamma_size; 1192 if (crtc->fb) 1193 crtc_resp->fb_id = crtc->fb->base.id; 1194 else 1195 crtc_resp->fb_id = 0; 1196 1197 if (crtc->enabled) { 1198 1199 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1200 crtc_resp->mode_valid = 1; 1201 1202 } else { 1203 crtc_resp->mode_valid = 0; 1204 } 1205 1206out: 1207 mutex_unlock(&dev->mode_config.mutex); 1208 return ret; 1209} 1210 1211/** 1212 * drm_mode_getconnector - get connector configuration 1213 * @inode: inode from the ioctl 1214 * @filp: file * from the ioctl 1215 * @cmd: cmd from ioctl 1216 * @arg: arg from ioctl 1217 * 1218 * LOCKING: 1219 * Caller? (FIXME) 1220 * 1221 * Construct a connector configuration structure to return to the user. 1222 * 1223 * Called by the user via ioctl. 1224 * 1225 * RETURNS: 1226 * Zero on success, errno on failure. 1227 */ 1228int drm_mode_getconnector(struct drm_device *dev, void *data, 1229 struct drm_file *file_priv) 1230{ 1231 struct drm_mode_get_connector *out_resp = data; 1232 struct drm_mode_object *obj; 1233 struct drm_connector *connector; 1234 struct drm_display_mode *mode; 1235 int mode_count = 0; 1236 int props_count = 0; 1237 int encoders_count = 0; 1238 int ret = 0; 1239 int copied = 0; 1240 int i; 1241 struct drm_mode_modeinfo u_mode; 1242 struct drm_mode_modeinfo __user *mode_ptr; 1243 uint32_t __user *prop_ptr; 1244 uint64_t __user *prop_values; 1245 uint32_t __user *encoder_ptr; 1246 1247 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1248 1249 DRM_DEBUG("connector id %d:\n", out_resp->connector_id); 1250 1251 mutex_lock(&dev->mode_config.mutex); 1252 1253 obj = drm_mode_object_find(dev, out_resp->connector_id, 1254 DRM_MODE_OBJECT_CONNECTOR); 1255 if (!obj) { 1256 ret = -EINVAL; 1257 goto out; 1258 } 1259 connector = obj_to_connector(obj); 1260 1261 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 1262 if (connector->property_ids[i] != 0) { 1263 props_count++; 1264 } 1265 } 1266 1267 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1268 if (connector->encoder_ids[i] != 0) { 1269 encoders_count++; 1270 } 1271 } 1272 1273 if (out_resp->count_modes == 0) { 1274 connector->funcs->fill_modes(connector, 1275 dev->mode_config.max_width, 1276 dev->mode_config.max_height); 1277 } 1278 1279 /* delayed so we get modes regardless of pre-fill_modes state */ 1280 list_for_each_entry(mode, &connector->modes, head) 1281 mode_count++; 1282 1283 out_resp->connector_id = connector->base.id; 1284 out_resp->connector_type = connector->connector_type; 1285 out_resp->connector_type_id = connector->connector_type_id; 1286 out_resp->mm_width = connector->display_info.width_mm; 1287 out_resp->mm_height = connector->display_info.height_mm; 1288 out_resp->subpixel = connector->display_info.subpixel_order; 1289 out_resp->connection = connector->status; 1290 if (connector->encoder) 1291 out_resp->encoder_id = connector->encoder->base.id; 1292 else 1293 out_resp->encoder_id = 0; 1294 1295 /* 1296 * This ioctl is called twice, once to determine how much space is 1297 * needed, and the 2nd time to fill it. 1298 */ 1299 if ((out_resp->count_modes >= mode_count) && mode_count) { 1300 copied = 0; 1301 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr; 1302 list_for_each_entry(mode, &connector->modes, head) { 1303 drm_crtc_convert_to_umode(&u_mode, mode); 1304 if (copy_to_user(mode_ptr + copied, 1305 &u_mode, sizeof(u_mode))) { 1306 ret = -EFAULT; 1307 goto out; 1308 } 1309 copied++; 1310 } 1311 } 1312 out_resp->count_modes = mode_count; 1313 1314 if ((out_resp->count_props >= props_count) && props_count) { 1315 copied = 0; 1316 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr); 1317 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr); 1318 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 1319 if (connector->property_ids[i] != 0) { 1320 if (put_user(connector->property_ids[i], 1321 prop_ptr + copied)) { 1322 ret = -EFAULT; 1323 goto out; 1324 } 1325 1326 if (put_user(connector->property_values[i], 1327 prop_values + copied)) { 1328 ret = -EFAULT; 1329 goto out; 1330 } 1331 copied++; 1332 } 1333 } 1334 } 1335 out_resp->count_props = props_count; 1336 1337 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1338 copied = 0; 1339 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr); 1340 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1341 if (connector->encoder_ids[i] != 0) { 1342 if (put_user(connector->encoder_ids[i], 1343 encoder_ptr + copied)) { 1344 ret = -EFAULT; 1345 goto out; 1346 } 1347 copied++; 1348 } 1349 } 1350 } 1351 out_resp->count_encoders = encoders_count; 1352 1353out: 1354 mutex_unlock(&dev->mode_config.mutex); 1355 return ret; 1356} 1357 1358int drm_mode_getencoder(struct drm_device *dev, void *data, 1359 struct drm_file *file_priv) 1360{ 1361 struct drm_mode_get_encoder *enc_resp = data; 1362 struct drm_mode_object *obj; 1363 struct drm_encoder *encoder; 1364 int ret = 0; 1365 1366 mutex_lock(&dev->mode_config.mutex); 1367 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1368 DRM_MODE_OBJECT_ENCODER); 1369 if (!obj) { 1370 ret = -EINVAL; 1371 goto out; 1372 } 1373 encoder = obj_to_encoder(obj); 1374 1375 if (encoder->crtc) 1376 enc_resp->crtc_id = encoder->crtc->base.id; 1377 else 1378 enc_resp->crtc_id = 0; 1379 enc_resp->encoder_type = encoder->encoder_type; 1380 enc_resp->encoder_id = encoder->base.id; 1381 enc_resp->possible_crtcs = encoder->possible_crtcs; 1382 enc_resp->possible_clones = encoder->possible_clones; 1383 1384out: 1385 mutex_unlock(&dev->mode_config.mutex); 1386 return ret; 1387} 1388 1389/** 1390 * drm_mode_setcrtc - set CRTC configuration 1391 * @inode: inode from the ioctl 1392 * @filp: file * from the ioctl 1393 * @cmd: cmd from ioctl 1394 * @arg: arg from ioctl 1395 * 1396 * LOCKING: 1397 * Caller? (FIXME) 1398 * 1399 * Build a new CRTC configuration based on user request. 1400 * 1401 * Called by the user via ioctl. 1402 * 1403 * RETURNS: 1404 * Zero on success, errno on failure. 1405 */ 1406int drm_mode_setcrtc(struct drm_device *dev, void *data, 1407 struct drm_file *file_priv) 1408{ 1409 struct drm_mode_config *config = &dev->mode_config; 1410 struct drm_mode_crtc *crtc_req = data; 1411 struct drm_mode_object *obj; 1412 struct drm_crtc *crtc, *crtcfb; 1413 struct drm_connector **connector_set = NULL, *connector; 1414 struct drm_framebuffer *fb = NULL; 1415 struct drm_display_mode *mode = NULL; 1416 struct drm_mode_set set; 1417 uint32_t __user *set_connectors_ptr; 1418 int ret = 0; 1419 int i; 1420 1421 mutex_lock(&dev->mode_config.mutex); 1422 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 1423 DRM_MODE_OBJECT_CRTC); 1424 if (!obj) { 1425 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id); 1426 ret = -EINVAL; 1427 goto out; 1428 } 1429 crtc = obj_to_crtc(obj); 1430 1431 if (crtc_req->mode_valid) { 1432 /* If we have a mode we need a framebuffer. */ 1433 /* If we pass -1, set the mode with the currently bound fb */ 1434 if (crtc_req->fb_id == -1) { 1435 list_for_each_entry(crtcfb, 1436 &dev->mode_config.crtc_list, head) { 1437 if (crtcfb == crtc) { 1438 DRM_DEBUG("Using current fb for setmode\n"); 1439 fb = crtc->fb; 1440 } 1441 } 1442 } else { 1443 obj = drm_mode_object_find(dev, crtc_req->fb_id, 1444 DRM_MODE_OBJECT_FB); 1445 if (!obj) { 1446 DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id); 1447 ret = -EINVAL; 1448 goto out; 1449 } 1450 fb = obj_to_fb(obj); 1451 } 1452 1453 mode = drm_mode_create(dev); 1454 drm_crtc_convert_umode(mode, &crtc_req->mode); 1455 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1456 } 1457 1458 if (crtc_req->count_connectors == 0 && mode) { 1459 DRM_DEBUG("Count connectors is 0 but mode set\n"); 1460 ret = -EINVAL; 1461 goto out; 1462 } 1463 1464 if (crtc_req->count_connectors > 0 && !mode && !fb) { 1465 DRM_DEBUG("Count connectors is %d but no mode or fb set\n", 1466 crtc_req->count_connectors); 1467 ret = -EINVAL; 1468 goto out; 1469 } 1470 1471 if (crtc_req->count_connectors > 0) { 1472 u32 out_id; 1473 1474 /* Avoid unbounded kernel memory allocation */ 1475 if (crtc_req->count_connectors > config->num_connector) { 1476 ret = -EINVAL; 1477 goto out; 1478 } 1479 1480 connector_set = kmalloc(crtc_req->count_connectors * 1481 sizeof(struct drm_connector *), 1482 GFP_KERNEL); 1483 if (!connector_set) { 1484 ret = -ENOMEM; 1485 goto out; 1486 } 1487 1488 for (i = 0; i < crtc_req->count_connectors; i++) { 1489 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr; 1490 if (get_user(out_id, &set_connectors_ptr[i])) { 1491 ret = -EFAULT; 1492 goto out; 1493 } 1494 1495 obj = drm_mode_object_find(dev, out_id, 1496 DRM_MODE_OBJECT_CONNECTOR); 1497 if (!obj) { 1498 DRM_DEBUG("Connector id %d unknown\n", out_id); 1499 ret = -EINVAL; 1500 goto out; 1501 } 1502 connector = obj_to_connector(obj); 1503 1504 connector_set[i] = connector; 1505 } 1506 } 1507 1508 set.crtc = crtc; 1509 set.x = crtc_req->x; 1510 set.y = crtc_req->y; 1511 set.mode = mode; 1512 set.connectors = connector_set; 1513 set.num_connectors = crtc_req->count_connectors; 1514 set.fb =fb; 1515 ret = crtc->funcs->set_config(&set); 1516 1517out: 1518 kfree(connector_set); 1519 mutex_unlock(&dev->mode_config.mutex); 1520 return ret; 1521} 1522 1523int drm_mode_cursor_ioctl(struct drm_device *dev, 1524 void *data, struct drm_file *file_priv) 1525{ 1526 struct drm_mode_cursor *req = data; 1527 struct drm_mode_object *obj; 1528 struct drm_crtc *crtc; 1529 int ret = 0; 1530 1531 DRM_DEBUG("\n"); 1532 1533 if (!req->flags) { 1534 DRM_ERROR("no operation set\n"); 1535 return -EINVAL; 1536 } 1537 1538 mutex_lock(&dev->mode_config.mutex); 1539 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 1540 if (!obj) { 1541 DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc_id); 1542 ret = -EINVAL; 1543 goto out; 1544 } 1545 crtc = obj_to_crtc(obj); 1546 1547 if (req->flags & DRM_MODE_CURSOR_BO) { 1548 if (!crtc->funcs->cursor_set) { 1549 DRM_ERROR("crtc does not support cursor\n"); 1550 ret = -ENXIO; 1551 goto out; 1552 } 1553 /* Turns off the cursor if handle is 0 */ 1554 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 1555 req->width, req->height); 1556 } 1557 1558 if (req->flags & DRM_MODE_CURSOR_MOVE) { 1559 if (crtc->funcs->cursor_move) { 1560 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 1561 } else { 1562 DRM_ERROR("crtc does not support cursor\n"); 1563 ret = -EFAULT; 1564 goto out; 1565 } 1566 } 1567out: 1568 mutex_unlock(&dev->mode_config.mutex); 1569 return ret; 1570} 1571 1572/** 1573 * drm_mode_addfb - add an FB to the graphics configuration 1574 * @inode: inode from the ioctl 1575 * @filp: file * from the ioctl 1576 * @cmd: cmd from ioctl 1577 * @arg: arg from ioctl 1578 * 1579 * LOCKING: 1580 * Takes mode config lock. 1581 * 1582 * Add a new FB to the specified CRTC, given a user request. 1583 * 1584 * Called by the user via ioctl. 1585 * 1586 * RETURNS: 1587 * Zero on success, errno on failure. 1588 */ 1589int drm_mode_addfb(struct drm_device *dev, 1590 void *data, struct drm_file *file_priv) 1591{ 1592 struct drm_mode_fb_cmd *r = data; 1593 struct drm_mode_config *config = &dev->mode_config; 1594 struct drm_framebuffer *fb; 1595 int ret = 0; 1596 1597 if ((config->min_width > r->width) || (r->width > config->max_width)) { 1598 DRM_ERROR("mode new framebuffer width not within limits\n"); 1599 return -EINVAL; 1600 } 1601 if ((config->min_height > r->height) || (r->height > config->max_height)) { 1602 DRM_ERROR("mode new framebuffer height not within limits\n"); 1603 return -EINVAL; 1604 } 1605 1606 mutex_lock(&dev->mode_config.mutex); 1607 1608 /* TODO check buffer is sufficently large */ 1609 /* TODO setup destructor callback */ 1610 1611 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 1612 if (!fb) { 1613 DRM_ERROR("could not create framebuffer\n"); 1614 ret = -EINVAL; 1615 goto out; 1616 } 1617 1618 r->fb_id = fb->base.id; 1619 list_add(&fb->filp_head, &file_priv->fbs); 1620 1621out: 1622 mutex_unlock(&dev->mode_config.mutex); 1623 return ret; 1624} 1625 1626/** 1627 * drm_mode_rmfb - remove an FB from the configuration 1628 * @inode: inode from the ioctl 1629 * @filp: file * from the ioctl 1630 * @cmd: cmd from ioctl 1631 * @arg: arg from ioctl 1632 * 1633 * LOCKING: 1634 * Takes mode config lock. 1635 * 1636 * Remove the FB specified by the user. 1637 * 1638 * Called by the user via ioctl. 1639 * 1640 * RETURNS: 1641 * Zero on success, errno on failure. 1642 */ 1643int drm_mode_rmfb(struct drm_device *dev, 1644 void *data, struct drm_file *file_priv) 1645{ 1646 struct drm_mode_object *obj; 1647 struct drm_framebuffer *fb = NULL; 1648 struct drm_framebuffer *fbl = NULL; 1649 uint32_t *id = data; 1650 int ret = 0; 1651 int found = 0; 1652 1653 mutex_lock(&dev->mode_config.mutex); 1654 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB); 1655 /* TODO check that we realy get a framebuffer back. */ 1656 if (!obj) { 1657 DRM_ERROR("mode invalid framebuffer id\n"); 1658 ret = -EINVAL; 1659 goto out; 1660 } 1661 fb = obj_to_fb(obj); 1662 1663 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 1664 if (fb == fbl) 1665 found = 1; 1666 1667 if (!found) { 1668 DRM_ERROR("tried to remove a fb that we didn't own\n"); 1669 ret = -EINVAL; 1670 goto out; 1671 } 1672 1673 /* TODO release all crtc connected to the framebuffer */ 1674 /* TODO unhock the destructor from the buffer object */ 1675 1676 list_del(&fb->filp_head); 1677 fb->funcs->destroy(fb); 1678 1679out: 1680 mutex_unlock(&dev->mode_config.mutex); 1681 return ret; 1682} 1683 1684/** 1685 * drm_mode_getfb - get FB info 1686 * @inode: inode from the ioctl 1687 * @filp: file * from the ioctl 1688 * @cmd: cmd from ioctl 1689 * @arg: arg from ioctl 1690 * 1691 * LOCKING: 1692 * Caller? (FIXME) 1693 * 1694 * Lookup the FB given its ID and return info about it. 1695 * 1696 * Called by the user via ioctl. 1697 * 1698 * RETURNS: 1699 * Zero on success, errno on failure. 1700 */ 1701int drm_mode_getfb(struct drm_device *dev, 1702 void *data, struct drm_file *file_priv) 1703{ 1704 struct drm_mode_fb_cmd *r = data; 1705 struct drm_mode_object *obj; 1706 struct drm_framebuffer *fb; 1707 int ret = 0; 1708 1709 mutex_lock(&dev->mode_config.mutex); 1710 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); 1711 if (!obj) { 1712 DRM_ERROR("invalid framebuffer id\n"); 1713 ret = -EINVAL; 1714 goto out; 1715 } 1716 fb = obj_to_fb(obj); 1717 1718 r->height = fb->height; 1719 r->width = fb->width; 1720 r->depth = fb->depth; 1721 r->bpp = fb->bits_per_pixel; 1722 r->pitch = fb->pitch; 1723 fb->funcs->create_handle(fb, file_priv, &r->handle); 1724 1725out: 1726 mutex_unlock(&dev->mode_config.mutex); 1727 return ret; 1728} 1729 1730/** 1731 * drm_fb_release - remove and free the FBs on this file 1732 * @filp: file * from the ioctl 1733 * 1734 * LOCKING: 1735 * Takes mode config lock. 1736 * 1737 * Destroy all the FBs associated with @filp. 1738 * 1739 * Called by the user via ioctl. 1740 * 1741 * RETURNS: 1742 * Zero on success, errno on failure. 1743 */ 1744void drm_fb_release(struct file *filp) 1745{ 1746 struct drm_file *priv = filp->private_data; 1747 struct drm_device *dev = priv->minor->dev; 1748 struct drm_framebuffer *fb, *tfb; 1749 1750 mutex_lock(&dev->mode_config.mutex); 1751 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 1752 list_del(&fb->filp_head); 1753 fb->funcs->destroy(fb); 1754 } 1755 mutex_unlock(&dev->mode_config.mutex); 1756} 1757 1758/** 1759 * drm_mode_attachmode - add a mode to the user mode list 1760 * @dev: DRM device 1761 * @connector: connector to add the mode to 1762 * @mode: mode to add 1763 * 1764 * Add @mode to @connector's user mode list. 1765 */ 1766static int drm_mode_attachmode(struct drm_device *dev, 1767 struct drm_connector *connector, 1768 struct drm_display_mode *mode) 1769{ 1770 int ret = 0; 1771 1772 list_add_tail(&mode->head, &connector->user_modes); 1773 return ret; 1774} 1775 1776int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, 1777 struct drm_display_mode *mode) 1778{ 1779 struct drm_connector *connector; 1780 int ret = 0; 1781 struct drm_display_mode *dup_mode; 1782 int need_dup = 0; 1783 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1784 if (!connector->encoder) 1785 break; 1786 if (connector->encoder->crtc == crtc) { 1787 if (need_dup) 1788 dup_mode = drm_mode_duplicate(dev, mode); 1789 else 1790 dup_mode = mode; 1791 ret = drm_mode_attachmode(dev, connector, dup_mode); 1792 if (ret) 1793 return ret; 1794 need_dup = 1; 1795 } 1796 } 1797 return 0; 1798} 1799EXPORT_SYMBOL(drm_mode_attachmode_crtc); 1800 1801static int drm_mode_detachmode(struct drm_device *dev, 1802 struct drm_connector *connector, 1803 struct drm_display_mode *mode) 1804{ 1805 int found = 0; 1806 int ret = 0; 1807 struct drm_display_mode *match_mode, *t; 1808 1809 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) { 1810 if (drm_mode_equal(match_mode, mode)) { 1811 list_del(&match_mode->head); 1812 drm_mode_destroy(dev, match_mode); 1813 found = 1; 1814 break; 1815 } 1816 } 1817 1818 if (!found) 1819 ret = -EINVAL; 1820 1821 return ret; 1822} 1823 1824int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode) 1825{ 1826 struct drm_connector *connector; 1827 1828 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1829 drm_mode_detachmode(dev, connector, mode); 1830 } 1831 return 0; 1832} 1833EXPORT_SYMBOL(drm_mode_detachmode_crtc); 1834 1835/** 1836 * drm_fb_attachmode - Attach a user mode to an connector 1837 * @inode: inode from the ioctl 1838 * @filp: file * from the ioctl 1839 * @cmd: cmd from ioctl 1840 * @arg: arg from ioctl 1841 * 1842 * This attaches a user specified mode to an connector. 1843 * Called by the user via ioctl. 1844 * 1845 * RETURNS: 1846 * Zero on success, errno on failure. 1847 */ 1848int drm_mode_attachmode_ioctl(struct drm_device *dev, 1849 void *data, struct drm_file *file_priv) 1850{ 1851 struct drm_mode_mode_cmd *mode_cmd = data; 1852 struct drm_connector *connector; 1853 struct drm_display_mode *mode; 1854 struct drm_mode_object *obj; 1855 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 1856 int ret = 0; 1857 1858 mutex_lock(&dev->mode_config.mutex); 1859 1860 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 1861 if (!obj) { 1862 ret = -EINVAL; 1863 goto out; 1864 } 1865 connector = obj_to_connector(obj); 1866 1867 mode = drm_mode_create(dev); 1868 if (!mode) { 1869 ret = -ENOMEM; 1870 goto out; 1871 } 1872 1873 drm_crtc_convert_umode(mode, umode); 1874 1875 ret = drm_mode_attachmode(dev, connector, mode); 1876out: 1877 mutex_unlock(&dev->mode_config.mutex); 1878 return ret; 1879} 1880 1881 1882/** 1883 * drm_fb_detachmode - Detach a user specified mode from an connector 1884 * @inode: inode from the ioctl 1885 * @filp: file * from the ioctl 1886 * @cmd: cmd from ioctl 1887 * @arg: arg from ioctl 1888 * 1889 * Called by the user via ioctl. 1890 * 1891 * RETURNS: 1892 * Zero on success, errno on failure. 1893 */ 1894int drm_mode_detachmode_ioctl(struct drm_device *dev, 1895 void *data, struct drm_file *file_priv) 1896{ 1897 struct drm_mode_object *obj; 1898 struct drm_mode_mode_cmd *mode_cmd = data; 1899 struct drm_connector *connector; 1900 struct drm_display_mode mode; 1901 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 1902 int ret = 0; 1903 1904 mutex_lock(&dev->mode_config.mutex); 1905 1906 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 1907 if (!obj) { 1908 ret = -EINVAL; 1909 goto out; 1910 } 1911 connector = obj_to_connector(obj); 1912 1913 drm_crtc_convert_umode(&mode, umode); 1914 ret = drm_mode_detachmode(dev, connector, &mode); 1915out: 1916 mutex_unlock(&dev->mode_config.mutex); 1917 return ret; 1918} 1919 1920struct drm_property *drm_property_create(struct drm_device *dev, int flags, 1921 const char *name, int num_values) 1922{ 1923 struct drm_property *property = NULL; 1924 1925 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 1926 if (!property) 1927 return NULL; 1928 1929 if (num_values) { 1930 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 1931 if (!property->values) 1932 goto fail; 1933 } 1934 1935 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 1936 property->flags = flags; 1937 property->num_values = num_values; 1938 INIT_LIST_HEAD(&property->enum_blob_list); 1939 1940 if (name) 1941 strncpy(property->name, name, DRM_PROP_NAME_LEN); 1942 1943 list_add_tail(&property->head, &dev->mode_config.property_list); 1944 return property; 1945fail: 1946 kfree(property); 1947 return NULL; 1948} 1949EXPORT_SYMBOL(drm_property_create); 1950 1951int drm_property_add_enum(struct drm_property *property, int index, 1952 uint64_t value, const char *name) 1953{ 1954 struct drm_property_enum *prop_enum; 1955 1956 if (!(property->flags & DRM_MODE_PROP_ENUM)) 1957 return -EINVAL; 1958 1959 if (!list_empty(&property->enum_blob_list)) { 1960 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 1961 if (prop_enum->value == value) { 1962 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 1963 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 1964 return 0; 1965 } 1966 } 1967 } 1968 1969 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 1970 if (!prop_enum) 1971 return -ENOMEM; 1972 1973 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 1974 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 1975 prop_enum->value = value; 1976 1977 property->values[index] = value; 1978 list_add_tail(&prop_enum->head, &property->enum_blob_list); 1979 return 0; 1980} 1981EXPORT_SYMBOL(drm_property_add_enum); 1982 1983void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 1984{ 1985 struct drm_property_enum *prop_enum, *pt; 1986 1987 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 1988 list_del(&prop_enum->head); 1989 kfree(prop_enum); 1990 } 1991 1992 if (property->num_values) 1993 kfree(property->values); 1994 drm_mode_object_put(dev, &property->base); 1995 list_del(&property->head); 1996 kfree(property); 1997} 1998EXPORT_SYMBOL(drm_property_destroy); 1999 2000int drm_connector_attach_property(struct drm_connector *connector, 2001 struct drm_property *property, uint64_t init_val) 2002{ 2003 int i; 2004 2005 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2006 if (connector->property_ids[i] == 0) { 2007 connector->property_ids[i] = property->base.id; 2008 connector->property_values[i] = init_val; 2009 break; 2010 } 2011 } 2012 2013 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2014 return -EINVAL; 2015 return 0; 2016} 2017EXPORT_SYMBOL(drm_connector_attach_property); 2018 2019int drm_connector_property_set_value(struct drm_connector *connector, 2020 struct drm_property *property, uint64_t value) 2021{ 2022 int i; 2023 2024 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2025 if (connector->property_ids[i] == property->base.id) { 2026 connector->property_values[i] = value; 2027 break; 2028 } 2029 } 2030 2031 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2032 return -EINVAL; 2033 return 0; 2034} 2035EXPORT_SYMBOL(drm_connector_property_set_value); 2036 2037int drm_connector_property_get_value(struct drm_connector *connector, 2038 struct drm_property *property, uint64_t *val) 2039{ 2040 int i; 2041 2042 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2043 if (connector->property_ids[i] == property->base.id) { 2044 *val = connector->property_values[i]; 2045 break; 2046 } 2047 } 2048 2049 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2050 return -EINVAL; 2051 return 0; 2052} 2053EXPORT_SYMBOL(drm_connector_property_get_value); 2054 2055int drm_mode_getproperty_ioctl(struct drm_device *dev, 2056 void *data, struct drm_file *file_priv) 2057{ 2058 struct drm_mode_object *obj; 2059 struct drm_mode_get_property *out_resp = data; 2060 struct drm_property *property; 2061 int enum_count = 0; 2062 int blob_count = 0; 2063 int value_count = 0; 2064 int ret = 0, i; 2065 int copied; 2066 struct drm_property_enum *prop_enum; 2067 struct drm_mode_property_enum __user *enum_ptr; 2068 struct drm_property_blob *prop_blob; 2069 uint32_t *blob_id_ptr; 2070 uint64_t __user *values_ptr; 2071 uint32_t __user *blob_length_ptr; 2072 2073 mutex_lock(&dev->mode_config.mutex); 2074 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 2075 if (!obj) { 2076 ret = -EINVAL; 2077 goto done; 2078 } 2079 property = obj_to_property(obj); 2080 2081 if (property->flags & DRM_MODE_PROP_ENUM) { 2082 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 2083 enum_count++; 2084 } else if (property->flags & DRM_MODE_PROP_BLOB) { 2085 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 2086 blob_count++; 2087 } 2088 2089 value_count = property->num_values; 2090 2091 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 2092 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 2093 out_resp->flags = property->flags; 2094 2095 if ((out_resp->count_values >= value_count) && value_count) { 2096 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr; 2097 for (i = 0; i < value_count; i++) { 2098 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 2099 ret = -EFAULT; 2100 goto done; 2101 } 2102 } 2103 } 2104 out_resp->count_values = value_count; 2105 2106 if (property->flags & DRM_MODE_PROP_ENUM) { 2107 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 2108 copied = 0; 2109 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr; 2110 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2111 2112 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 2113 ret = -EFAULT; 2114 goto done; 2115 } 2116 2117 if (copy_to_user(&enum_ptr[copied].name, 2118 &prop_enum->name, DRM_PROP_NAME_LEN)) { 2119 ret = -EFAULT; 2120 goto done; 2121 } 2122 copied++; 2123 } 2124 } 2125 out_resp->count_enum_blobs = enum_count; 2126 } 2127 2128 if (property->flags & DRM_MODE_PROP_BLOB) { 2129 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 2130 copied = 0; 2131 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr; 2132 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr; 2133 2134 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 2135 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 2136 ret = -EFAULT; 2137 goto done; 2138 } 2139 2140 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 2141 ret = -EFAULT; 2142 goto done; 2143 } 2144 2145 copied++; 2146 } 2147 } 2148 out_resp->count_enum_blobs = blob_count; 2149 } 2150done: 2151 mutex_unlock(&dev->mode_config.mutex); 2152 return ret; 2153} 2154 2155static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 2156 void *data) 2157{ 2158 struct drm_property_blob *blob; 2159 2160 if (!length || !data) 2161 return NULL; 2162 2163 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 2164 if (!blob) 2165 return NULL; 2166 2167 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob)); 2168 blob->length = length; 2169 2170 memcpy(blob->data, data, length); 2171 2172 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 2173 2174 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 2175 return blob; 2176} 2177 2178static void drm_property_destroy_blob(struct drm_device *dev, 2179 struct drm_property_blob *blob) 2180{ 2181 drm_mode_object_put(dev, &blob->base); 2182 list_del(&blob->head); 2183 kfree(blob); 2184} 2185 2186int drm_mode_getblob_ioctl(struct drm_device *dev, 2187 void *data, struct drm_file *file_priv) 2188{ 2189 struct drm_mode_object *obj; 2190 struct drm_mode_get_blob *out_resp = data; 2191 struct drm_property_blob *blob; 2192 int ret = 0; 2193 void *blob_ptr; 2194 2195 mutex_lock(&dev->mode_config.mutex); 2196 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 2197 if (!obj) { 2198 ret = -EINVAL; 2199 goto done; 2200 } 2201 blob = obj_to_blob(obj); 2202 2203 if (out_resp->length == blob->length) { 2204 blob_ptr = (void *)(unsigned long)out_resp->data; 2205 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 2206 ret = -EFAULT; 2207 goto done; 2208 } 2209 } 2210 out_resp->length = blob->length; 2211 2212done: 2213 mutex_unlock(&dev->mode_config.mutex); 2214 return ret; 2215} 2216 2217int drm_mode_connector_update_edid_property(struct drm_connector *connector, 2218 struct edid *edid) 2219{ 2220 struct drm_device *dev = connector->dev; 2221 int ret = 0; 2222 2223 if (connector->edid_blob_ptr) 2224 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 2225 2226 /* Delete edid, when there is none. */ 2227 if (!edid) { 2228 connector->edid_blob_ptr = NULL; 2229 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0); 2230 return ret; 2231 } 2232 2233 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid); 2234 2235 ret = drm_connector_property_set_value(connector, 2236 dev->mode_config.edid_property, 2237 connector->edid_blob_ptr->base.id); 2238 2239 return ret; 2240} 2241EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 2242 2243int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 2244 void *data, struct drm_file *file_priv) 2245{ 2246 struct drm_mode_connector_set_property *out_resp = data; 2247 struct drm_mode_object *obj; 2248 struct drm_property *property; 2249 struct drm_connector *connector; 2250 int ret = -EINVAL; 2251 int i; 2252 2253 mutex_lock(&dev->mode_config.mutex); 2254 2255 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2256 if (!obj) { 2257 goto out; 2258 } 2259 connector = obj_to_connector(obj); 2260 2261 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2262 if (connector->property_ids[i] == out_resp->prop_id) 2263 break; 2264 } 2265 2266 if (i == DRM_CONNECTOR_MAX_PROPERTY) { 2267 goto out; 2268 } 2269 2270 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 2271 if (!obj) { 2272 goto out; 2273 } 2274 property = obj_to_property(obj); 2275 2276 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 2277 goto out; 2278 2279 if (property->flags & DRM_MODE_PROP_RANGE) { 2280 if (out_resp->value < property->values[0]) 2281 goto out; 2282 2283 if (out_resp->value > property->values[1]) 2284 goto out; 2285 } else { 2286 int found = 0; 2287 for (i = 0; i < property->num_values; i++) { 2288 if (property->values[i] == out_resp->value) { 2289 found = 1; 2290 break; 2291 } 2292 } 2293 if (!found) { 2294 goto out; 2295 } 2296 } 2297 2298 if (connector->funcs->set_property) 2299 ret = connector->funcs->set_property(connector, property, out_resp->value); 2300 2301 /* store the property value if succesful */ 2302 if (!ret) 2303 drm_connector_property_set_value(connector, property, out_resp->value); 2304out: 2305 mutex_unlock(&dev->mode_config.mutex); 2306 return ret; 2307} 2308 2309int drm_mode_connector_attach_encoder(struct drm_connector *connector, 2310 struct drm_encoder *encoder) 2311{ 2312 int i; 2313 2314 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 2315 if (connector->encoder_ids[i] == 0) { 2316 connector->encoder_ids[i] = encoder->base.id; 2317 return 0; 2318 } 2319 } 2320 return -ENOMEM; 2321} 2322EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 2323 2324void drm_mode_connector_detach_encoder(struct drm_connector *connector, 2325 struct drm_encoder *encoder) 2326{ 2327 int i; 2328 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 2329 if (connector->encoder_ids[i] == encoder->base.id) { 2330 connector->encoder_ids[i] = 0; 2331 if (connector->encoder == encoder) 2332 connector->encoder = NULL; 2333 break; 2334 } 2335 } 2336} 2337EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 2338 2339bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 2340 int gamma_size) 2341{ 2342 crtc->gamma_size = gamma_size; 2343 2344 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 2345 if (!crtc->gamma_store) { 2346 crtc->gamma_size = 0; 2347 return false; 2348 } 2349 2350 return true; 2351} 2352EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 2353 2354int drm_mode_gamma_set_ioctl(struct drm_device *dev, 2355 void *data, struct drm_file *file_priv) 2356{ 2357 struct drm_mode_crtc_lut *crtc_lut = data; 2358 struct drm_mode_object *obj; 2359 struct drm_crtc *crtc; 2360 void *r_base, *g_base, *b_base; 2361 int size; 2362 int ret = 0; 2363 2364 mutex_lock(&dev->mode_config.mutex); 2365 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 2366 if (!obj) { 2367 ret = -EINVAL; 2368 goto out; 2369 } 2370 crtc = obj_to_crtc(obj); 2371 2372 /* memcpy into gamma store */ 2373 if (crtc_lut->gamma_size != crtc->gamma_size) { 2374 ret = -EINVAL; 2375 goto out; 2376 } 2377 2378 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 2379 r_base = crtc->gamma_store; 2380 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 2381 ret = -EFAULT; 2382 goto out; 2383 } 2384 2385 g_base = r_base + size; 2386 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 2387 ret = -EFAULT; 2388 goto out; 2389 } 2390 2391 b_base = g_base + size; 2392 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 2393 ret = -EFAULT; 2394 goto out; 2395 } 2396 2397 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size); 2398 2399out: 2400 mutex_unlock(&dev->mode_config.mutex); 2401 return ret; 2402 2403} 2404 2405int drm_mode_gamma_get_ioctl(struct drm_device *dev, 2406 void *data, struct drm_file *file_priv) 2407{ 2408 struct drm_mode_crtc_lut *crtc_lut = data; 2409 struct drm_mode_object *obj; 2410 struct drm_crtc *crtc; 2411 void *r_base, *g_base, *b_base; 2412 int size; 2413 int ret = 0; 2414 2415 mutex_lock(&dev->mode_config.mutex); 2416 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 2417 if (!obj) { 2418 ret = -EINVAL; 2419 goto out; 2420 } 2421 crtc = obj_to_crtc(obj); 2422 2423 /* memcpy into gamma store */ 2424 if (crtc_lut->gamma_size != crtc->gamma_size) { 2425 ret = -EINVAL; 2426 goto out; 2427 } 2428 2429 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 2430 r_base = crtc->gamma_store; 2431 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 2432 ret = -EFAULT; 2433 goto out; 2434 } 2435 2436 g_base = r_base + size; 2437 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 2438 ret = -EFAULT; 2439 goto out; 2440 } 2441 2442 b_base = g_base + size; 2443 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 2444 ret = -EFAULT; 2445 goto out; 2446 } 2447out: 2448 mutex_unlock(&dev->mode_config.mutex); 2449 return ret; 2450} 2451