drm_crtc.c revision d1b45d5f0586041fe750d90a62ba09cffb3eace1
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 <linux/slab.h> 34#include <linux/export.h> 35#include "drm.h" 36#include "drmP.h" 37#include "drm_crtc.h" 38#include "drm_edid.h" 39#include "drm_fourcc.h" 40 41/* Avoid boilerplate. I'm tired of typing. */ 42#define DRM_ENUM_NAME_FN(fnname, list) \ 43 char *fnname(int val) \ 44 { \ 45 int i; \ 46 for (i = 0; i < ARRAY_SIZE(list); i++) { \ 47 if (list[i].type == val) \ 48 return list[i].name; \ 49 } \ 50 return "(unknown)"; \ 51 } 52 53/* 54 * Global properties 55 */ 56static struct drm_prop_enum_list drm_dpms_enum_list[] = 57{ { DRM_MODE_DPMS_ON, "On" }, 58 { DRM_MODE_DPMS_STANDBY, "Standby" }, 59 { DRM_MODE_DPMS_SUSPEND, "Suspend" }, 60 { DRM_MODE_DPMS_OFF, "Off" } 61}; 62 63DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 64 65/* 66 * Optional properties 67 */ 68static struct drm_prop_enum_list drm_scaling_mode_enum_list[] = 69{ 70 { DRM_MODE_SCALE_NONE, "None" }, 71 { DRM_MODE_SCALE_FULLSCREEN, "Full" }, 72 { DRM_MODE_SCALE_CENTER, "Center" }, 73 { DRM_MODE_SCALE_ASPECT, "Full aspect" }, 74}; 75 76static struct drm_prop_enum_list drm_dithering_mode_enum_list[] = 77{ 78 { DRM_MODE_DITHERING_OFF, "Off" }, 79 { DRM_MODE_DITHERING_ON, "On" }, 80 { DRM_MODE_DITHERING_AUTO, "Automatic" }, 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 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 112}; 113 114DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 115 116static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 117{ 118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 123}; 124 125DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 126 drm_tv_subconnector_enum_list) 127 128static struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 129 { DRM_MODE_DIRTY_OFF, "Off" }, 130 { DRM_MODE_DIRTY_ON, "On" }, 131 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 132}; 133 134DRM_ENUM_NAME_FN(drm_get_dirty_info_name, 135 drm_dirty_info_enum_list) 136 137struct drm_conn_prop_enum_list { 138 int type; 139 char *name; 140 int count; 141}; 142 143/* 144 * Connector and encoder types. 145 */ 146static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 147{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, 148 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, 149 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, 150 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, 151 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, 152 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, 153 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, 154 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, 155 { DRM_MODE_CONNECTOR_Component, "Component", 0 }, 156 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 }, 157 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 }, 158 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 }, 159 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 }, 160 { DRM_MODE_CONNECTOR_TV, "TV", 0 }, 161 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 }, 162 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0}, 163}; 164 165static struct drm_prop_enum_list drm_encoder_enum_list[] = 166{ { DRM_MODE_ENCODER_NONE, "None" }, 167 { DRM_MODE_ENCODER_DAC, "DAC" }, 168 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 169 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 170 { DRM_MODE_ENCODER_TVDAC, "TV" }, 171 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 172}; 173 174char *drm_get_encoder_name(struct drm_encoder *encoder) 175{ 176 static char buf[32]; 177 178 snprintf(buf, 32, "%s-%d", 179 drm_encoder_enum_list[encoder->encoder_type].name, 180 encoder->base.id); 181 return buf; 182} 183EXPORT_SYMBOL(drm_get_encoder_name); 184 185char *drm_get_connector_name(struct drm_connector *connector) 186{ 187 static char buf[32]; 188 189 snprintf(buf, 32, "%s-%d", 190 drm_connector_enum_list[connector->connector_type].name, 191 connector->connector_type_id); 192 return buf; 193} 194EXPORT_SYMBOL(drm_get_connector_name); 195 196char *drm_get_connector_status_name(enum drm_connector_status status) 197{ 198 if (status == connector_status_connected) 199 return "connected"; 200 else if (status == connector_status_disconnected) 201 return "disconnected"; 202 else 203 return "unknown"; 204} 205 206/** 207 * drm_mode_object_get - allocate a new identifier 208 * @dev: DRM device 209 * @ptr: object pointer, used to generate unique ID 210 * @type: object type 211 * 212 * LOCKING: 213 * 214 * Create a unique identifier based on @ptr in @dev's identifier space. Used 215 * for tracking modes, CRTCs and connectors. 216 * 217 * RETURNS: 218 * New unique (relative to other objects in @dev) integer identifier for the 219 * object. 220 */ 221static int drm_mode_object_get(struct drm_device *dev, 222 struct drm_mode_object *obj, uint32_t obj_type) 223{ 224 int new_id = 0; 225 int ret; 226 227again: 228 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) { 229 DRM_ERROR("Ran out memory getting a mode number\n"); 230 return -EINVAL; 231 } 232 233 mutex_lock(&dev->mode_config.idr_mutex); 234 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id); 235 mutex_unlock(&dev->mode_config.idr_mutex); 236 if (ret == -EAGAIN) 237 goto again; 238 239 obj->id = new_id; 240 obj->type = obj_type; 241 return 0; 242} 243 244/** 245 * drm_mode_object_put - free an identifer 246 * @dev: DRM device 247 * @id: ID to free 248 * 249 * LOCKING: 250 * Caller must hold DRM mode_config lock. 251 * 252 * Free @id from @dev's unique identifier pool. 253 */ 254static void drm_mode_object_put(struct drm_device *dev, 255 struct drm_mode_object *object) 256{ 257 mutex_lock(&dev->mode_config.idr_mutex); 258 idr_remove(&dev->mode_config.crtc_idr, object->id); 259 mutex_unlock(&dev->mode_config.idr_mutex); 260} 261 262struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 263 uint32_t id, uint32_t type) 264{ 265 struct drm_mode_object *obj = NULL; 266 267 mutex_lock(&dev->mode_config.idr_mutex); 268 obj = idr_find(&dev->mode_config.crtc_idr, id); 269 if (!obj || (obj->type != type) || (obj->id != id)) 270 obj = NULL; 271 mutex_unlock(&dev->mode_config.idr_mutex); 272 273 return obj; 274} 275EXPORT_SYMBOL(drm_mode_object_find); 276 277/** 278 * drm_framebuffer_init - initialize a framebuffer 279 * @dev: DRM device 280 * 281 * LOCKING: 282 * Caller must hold mode config lock. 283 * 284 * Allocates an ID for the framebuffer's parent mode object, sets its mode 285 * functions & device file and adds it to the master fd list. 286 * 287 * RETURNS: 288 * Zero on success, error code on failure. 289 */ 290int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 291 const struct drm_framebuffer_funcs *funcs) 292{ 293 int ret; 294 295 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 296 if (ret) 297 return ret; 298 299 fb->dev = dev; 300 fb->funcs = funcs; 301 dev->mode_config.num_fb++; 302 list_add(&fb->head, &dev->mode_config.fb_list); 303 304 return 0; 305} 306EXPORT_SYMBOL(drm_framebuffer_init); 307 308/** 309 * drm_framebuffer_cleanup - remove a framebuffer object 310 * @fb: framebuffer to remove 311 * 312 * LOCKING: 313 * Caller must hold mode config lock. 314 * 315 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes 316 * it, setting it to NULL. 317 */ 318void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 319{ 320 struct drm_device *dev = fb->dev; 321 struct drm_crtc *crtc; 322 struct drm_plane *plane; 323 struct drm_mode_set set; 324 int ret; 325 326 /* remove from any CRTC */ 327 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 328 if (crtc->fb == fb) { 329 /* should turn off the crtc */ 330 memset(&set, 0, sizeof(struct drm_mode_set)); 331 set.crtc = crtc; 332 set.fb = NULL; 333 ret = crtc->funcs->set_config(&set); 334 if (ret) 335 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 336 } 337 } 338 339 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 340 if (plane->fb == fb) { 341 /* should turn off the crtc */ 342 ret = plane->funcs->disable_plane(plane); 343 if (ret) 344 DRM_ERROR("failed to disable plane with busy fb\n"); 345 /* disconnect the plane from the fb and crtc: */ 346 plane->fb = NULL; 347 plane->crtc = NULL; 348 } 349 } 350 351 drm_mode_object_put(dev, &fb->base); 352 list_del(&fb->head); 353 dev->mode_config.num_fb--; 354} 355EXPORT_SYMBOL(drm_framebuffer_cleanup); 356 357/** 358 * drm_crtc_init - Initialise a new CRTC object 359 * @dev: DRM device 360 * @crtc: CRTC object to init 361 * @funcs: callbacks for the new CRTC 362 * 363 * LOCKING: 364 * Caller must hold mode config lock. 365 * 366 * Inits a new object created as base part of an driver crtc object. 367 * 368 * RETURNS: 369 * Zero on success, error code on failure. 370 */ 371int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 372 const struct drm_crtc_funcs *funcs) 373{ 374 int ret; 375 376 crtc->dev = dev; 377 crtc->funcs = funcs; 378 379 mutex_lock(&dev->mode_config.mutex); 380 381 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 382 if (ret) 383 goto out; 384 385 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 386 dev->mode_config.num_crtc++; 387 388 out: 389 mutex_unlock(&dev->mode_config.mutex); 390 391 return ret; 392} 393EXPORT_SYMBOL(drm_crtc_init); 394 395/** 396 * drm_crtc_cleanup - Cleans up the core crtc usage. 397 * @crtc: CRTC to cleanup 398 * 399 * LOCKING: 400 * Caller must hold mode config lock. 401 * 402 * Cleanup @crtc. Removes from drm modesetting space 403 * does NOT free object, caller does that. 404 */ 405void drm_crtc_cleanup(struct drm_crtc *crtc) 406{ 407 struct drm_device *dev = crtc->dev; 408 409 if (crtc->gamma_store) { 410 kfree(crtc->gamma_store); 411 crtc->gamma_store = NULL; 412 } 413 414 drm_mode_object_put(dev, &crtc->base); 415 list_del(&crtc->head); 416 dev->mode_config.num_crtc--; 417} 418EXPORT_SYMBOL(drm_crtc_cleanup); 419 420/** 421 * drm_mode_probed_add - add a mode to a connector's probed mode list 422 * @connector: connector the new mode 423 * @mode: mode data 424 * 425 * LOCKING: 426 * Caller must hold mode config lock. 427 * 428 * Add @mode to @connector's mode list for later use. 429 */ 430void drm_mode_probed_add(struct drm_connector *connector, 431 struct drm_display_mode *mode) 432{ 433 list_add(&mode->head, &connector->probed_modes); 434} 435EXPORT_SYMBOL(drm_mode_probed_add); 436 437/** 438 * drm_mode_remove - remove and free a mode 439 * @connector: connector list to modify 440 * @mode: mode to remove 441 * 442 * LOCKING: 443 * Caller must hold mode config lock. 444 * 445 * Remove @mode from @connector's mode list, then free it. 446 */ 447void drm_mode_remove(struct drm_connector *connector, 448 struct drm_display_mode *mode) 449{ 450 list_del(&mode->head); 451 drm_mode_destroy(connector->dev, mode); 452} 453EXPORT_SYMBOL(drm_mode_remove); 454 455/** 456 * drm_connector_init - Init a preallocated connector 457 * @dev: DRM device 458 * @connector: the connector to init 459 * @funcs: callbacks for this connector 460 * @name: user visible name of the connector 461 * 462 * LOCKING: 463 * Takes mode config lock. 464 * 465 * Initialises a preallocated connector. Connectors should be 466 * subclassed as part of driver connector objects. 467 * 468 * RETURNS: 469 * Zero on success, error code on failure. 470 */ 471int drm_connector_init(struct drm_device *dev, 472 struct drm_connector *connector, 473 const struct drm_connector_funcs *funcs, 474 int connector_type) 475{ 476 int ret; 477 478 mutex_lock(&dev->mode_config.mutex); 479 480 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 481 if (ret) 482 goto out; 483 484 connector->dev = dev; 485 connector->funcs = funcs; 486 connector->connector_type = connector_type; 487 connector->connector_type_id = 488 ++drm_connector_enum_list[connector_type].count; /* TODO */ 489 INIT_LIST_HEAD(&connector->user_modes); 490 INIT_LIST_HEAD(&connector->probed_modes); 491 INIT_LIST_HEAD(&connector->modes); 492 connector->edid_blob_ptr = NULL; 493 494 list_add_tail(&connector->head, &dev->mode_config.connector_list); 495 dev->mode_config.num_connector++; 496 497 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 498 drm_connector_attach_property(connector, 499 dev->mode_config.edid_property, 500 0); 501 502 drm_connector_attach_property(connector, 503 dev->mode_config.dpms_property, 0); 504 505 out: 506 mutex_unlock(&dev->mode_config.mutex); 507 508 return ret; 509} 510EXPORT_SYMBOL(drm_connector_init); 511 512/** 513 * drm_connector_cleanup - cleans up an initialised connector 514 * @connector: connector to cleanup 515 * 516 * LOCKING: 517 * Takes mode config lock. 518 * 519 * Cleans up the connector but doesn't free the object. 520 */ 521void drm_connector_cleanup(struct drm_connector *connector) 522{ 523 struct drm_device *dev = connector->dev; 524 struct drm_display_mode *mode, *t; 525 526 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 527 drm_mode_remove(connector, mode); 528 529 list_for_each_entry_safe(mode, t, &connector->modes, head) 530 drm_mode_remove(connector, mode); 531 532 list_for_each_entry_safe(mode, t, &connector->user_modes, head) 533 drm_mode_remove(connector, mode); 534 535 mutex_lock(&dev->mode_config.mutex); 536 drm_mode_object_put(dev, &connector->base); 537 list_del(&connector->head); 538 dev->mode_config.num_connector--; 539 mutex_unlock(&dev->mode_config.mutex); 540} 541EXPORT_SYMBOL(drm_connector_cleanup); 542 543void drm_connector_unplug_all(struct drm_device *dev) 544{ 545 struct drm_connector *connector; 546 547 /* taking the mode config mutex ends up in a clash with sysfs */ 548 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 549 drm_sysfs_connector_remove(connector); 550 551} 552EXPORT_SYMBOL(drm_connector_unplug_all); 553 554int drm_encoder_init(struct drm_device *dev, 555 struct drm_encoder *encoder, 556 const struct drm_encoder_funcs *funcs, 557 int encoder_type) 558{ 559 int ret; 560 561 mutex_lock(&dev->mode_config.mutex); 562 563 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 564 if (ret) 565 goto out; 566 567 encoder->dev = dev; 568 encoder->encoder_type = encoder_type; 569 encoder->funcs = funcs; 570 571 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 572 dev->mode_config.num_encoder++; 573 574 out: 575 mutex_unlock(&dev->mode_config.mutex); 576 577 return ret; 578} 579EXPORT_SYMBOL(drm_encoder_init); 580 581void drm_encoder_cleanup(struct drm_encoder *encoder) 582{ 583 struct drm_device *dev = encoder->dev; 584 mutex_lock(&dev->mode_config.mutex); 585 drm_mode_object_put(dev, &encoder->base); 586 list_del(&encoder->head); 587 dev->mode_config.num_encoder--; 588 mutex_unlock(&dev->mode_config.mutex); 589} 590EXPORT_SYMBOL(drm_encoder_cleanup); 591 592int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 593 unsigned long possible_crtcs, 594 const struct drm_plane_funcs *funcs, 595 const uint32_t *formats, uint32_t format_count, 596 bool priv) 597{ 598 int ret; 599 600 mutex_lock(&dev->mode_config.mutex); 601 602 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 603 if (ret) 604 goto out; 605 606 plane->dev = dev; 607 plane->funcs = funcs; 608 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 609 GFP_KERNEL); 610 if (!plane->format_types) { 611 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 612 drm_mode_object_put(dev, &plane->base); 613 ret = -ENOMEM; 614 goto out; 615 } 616 617 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 618 plane->format_count = format_count; 619 plane->possible_crtcs = possible_crtcs; 620 621 /* private planes are not exposed to userspace, but depending on 622 * display hardware, might be convenient to allow sharing programming 623 * for the scanout engine with the crtc implementation. 624 */ 625 if (!priv) { 626 list_add_tail(&plane->head, &dev->mode_config.plane_list); 627 dev->mode_config.num_plane++; 628 } else { 629 INIT_LIST_HEAD(&plane->head); 630 } 631 632 out: 633 mutex_unlock(&dev->mode_config.mutex); 634 635 return ret; 636} 637EXPORT_SYMBOL(drm_plane_init); 638 639void drm_plane_cleanup(struct drm_plane *plane) 640{ 641 struct drm_device *dev = plane->dev; 642 643 mutex_lock(&dev->mode_config.mutex); 644 kfree(plane->format_types); 645 drm_mode_object_put(dev, &plane->base); 646 /* if not added to a list, it must be a private plane */ 647 if (!list_empty(&plane->head)) { 648 list_del(&plane->head); 649 dev->mode_config.num_plane--; 650 } 651 mutex_unlock(&dev->mode_config.mutex); 652} 653EXPORT_SYMBOL(drm_plane_cleanup); 654 655/** 656 * drm_mode_create - create a new display mode 657 * @dev: DRM device 658 * 659 * LOCKING: 660 * Caller must hold DRM mode_config lock. 661 * 662 * Create a new drm_display_mode, give it an ID, and return it. 663 * 664 * RETURNS: 665 * Pointer to new mode on success, NULL on error. 666 */ 667struct drm_display_mode *drm_mode_create(struct drm_device *dev) 668{ 669 struct drm_display_mode *nmode; 670 671 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 672 if (!nmode) 673 return NULL; 674 675 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 676 kfree(nmode); 677 return NULL; 678 } 679 680 return nmode; 681} 682EXPORT_SYMBOL(drm_mode_create); 683 684/** 685 * drm_mode_destroy - remove a mode 686 * @dev: DRM device 687 * @mode: mode to remove 688 * 689 * LOCKING: 690 * Caller must hold mode config lock. 691 * 692 * Free @mode's unique identifier, then free it. 693 */ 694void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 695{ 696 if (!mode) 697 return; 698 699 drm_mode_object_put(dev, &mode->base); 700 701 kfree(mode); 702} 703EXPORT_SYMBOL(drm_mode_destroy); 704 705static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 706{ 707 struct drm_property *edid; 708 struct drm_property *dpms; 709 710 /* 711 * Standard properties (apply to all connectors) 712 */ 713 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 714 DRM_MODE_PROP_IMMUTABLE, 715 "EDID", 0); 716 dev->mode_config.edid_property = edid; 717 718 dpms = drm_property_create_enum(dev, 0, 719 "DPMS", drm_dpms_enum_list, 720 ARRAY_SIZE(drm_dpms_enum_list)); 721 dev->mode_config.dpms_property = dpms; 722 723 return 0; 724} 725 726/** 727 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 728 * @dev: DRM device 729 * 730 * Called by a driver the first time a DVI-I connector is made. 731 */ 732int drm_mode_create_dvi_i_properties(struct drm_device *dev) 733{ 734 struct drm_property *dvi_i_selector; 735 struct drm_property *dvi_i_subconnector; 736 737 if (dev->mode_config.dvi_i_select_subconnector_property) 738 return 0; 739 740 dvi_i_selector = 741 drm_property_create_enum(dev, 0, 742 "select subconnector", 743 drm_dvi_i_select_enum_list, 744 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 745 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 746 747 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 748 "subconnector", 749 drm_dvi_i_subconnector_enum_list, 750 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 751 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 752 753 return 0; 754} 755EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 756 757/** 758 * drm_create_tv_properties - create TV specific connector properties 759 * @dev: DRM device 760 * @num_modes: number of different TV formats (modes) supported 761 * @modes: array of pointers to strings containing name of each format 762 * 763 * Called by a driver's TV initialization routine, this function creates 764 * the TV specific connector properties for a given device. Caller is 765 * responsible for allocating a list of format names and passing them to 766 * this routine. 767 */ 768int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 769 char *modes[]) 770{ 771 struct drm_property *tv_selector; 772 struct drm_property *tv_subconnector; 773 int i; 774 775 if (dev->mode_config.tv_select_subconnector_property) 776 return 0; 777 778 /* 779 * Basic connector properties 780 */ 781 tv_selector = drm_property_create_enum(dev, 0, 782 "select subconnector", 783 drm_tv_select_enum_list, 784 ARRAY_SIZE(drm_tv_select_enum_list)); 785 dev->mode_config.tv_select_subconnector_property = tv_selector; 786 787 tv_subconnector = 788 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 789 "subconnector", 790 drm_tv_subconnector_enum_list, 791 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 792 dev->mode_config.tv_subconnector_property = tv_subconnector; 793 794 /* 795 * Other, TV specific properties: margins & TV modes. 796 */ 797 dev->mode_config.tv_left_margin_property = 798 drm_property_create_range(dev, 0, "left margin", 0, 100); 799 800 dev->mode_config.tv_right_margin_property = 801 drm_property_create_range(dev, 0, "right margin", 0, 100); 802 803 dev->mode_config.tv_top_margin_property = 804 drm_property_create_range(dev, 0, "top margin", 0, 100); 805 806 dev->mode_config.tv_bottom_margin_property = 807 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 808 809 dev->mode_config.tv_mode_property = 810 drm_property_create(dev, DRM_MODE_PROP_ENUM, 811 "mode", num_modes); 812 for (i = 0; i < num_modes; i++) 813 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 814 i, modes[i]); 815 816 dev->mode_config.tv_brightness_property = 817 drm_property_create_range(dev, 0, "brightness", 0, 100); 818 819 dev->mode_config.tv_contrast_property = 820 drm_property_create_range(dev, 0, "contrast", 0, 100); 821 822 dev->mode_config.tv_flicker_reduction_property = 823 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 824 825 dev->mode_config.tv_overscan_property = 826 drm_property_create_range(dev, 0, "overscan", 0, 100); 827 828 dev->mode_config.tv_saturation_property = 829 drm_property_create_range(dev, 0, "saturation", 0, 100); 830 831 dev->mode_config.tv_hue_property = 832 drm_property_create_range(dev, 0, "hue", 0, 100); 833 834 return 0; 835} 836EXPORT_SYMBOL(drm_mode_create_tv_properties); 837 838/** 839 * drm_mode_create_scaling_mode_property - create scaling mode property 840 * @dev: DRM device 841 * 842 * Called by a driver the first time it's needed, must be attached to desired 843 * connectors. 844 */ 845int drm_mode_create_scaling_mode_property(struct drm_device *dev) 846{ 847 struct drm_property *scaling_mode; 848 849 if (dev->mode_config.scaling_mode_property) 850 return 0; 851 852 scaling_mode = 853 drm_property_create_enum(dev, 0, "scaling mode", 854 drm_scaling_mode_enum_list, 855 ARRAY_SIZE(drm_scaling_mode_enum_list)); 856 857 dev->mode_config.scaling_mode_property = scaling_mode; 858 859 return 0; 860} 861EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 862 863/** 864 * drm_mode_create_dithering_property - create dithering property 865 * @dev: DRM device 866 * 867 * Called by a driver the first time it's needed, must be attached to desired 868 * connectors. 869 */ 870int drm_mode_create_dithering_property(struct drm_device *dev) 871{ 872 struct drm_property *dithering_mode; 873 874 if (dev->mode_config.dithering_mode_property) 875 return 0; 876 877 dithering_mode = 878 drm_property_create_enum(dev, 0, "dithering", 879 drm_dithering_mode_enum_list, 880 ARRAY_SIZE(drm_dithering_mode_enum_list)); 881 dev->mode_config.dithering_mode_property = dithering_mode; 882 883 return 0; 884} 885EXPORT_SYMBOL(drm_mode_create_dithering_property); 886 887/** 888 * drm_mode_create_dirty_property - create dirty property 889 * @dev: DRM device 890 * 891 * Called by a driver the first time it's needed, must be attached to desired 892 * connectors. 893 */ 894int drm_mode_create_dirty_info_property(struct drm_device *dev) 895{ 896 struct drm_property *dirty_info; 897 898 if (dev->mode_config.dirty_info_property) 899 return 0; 900 901 dirty_info = 902 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 903 "dirty", 904 drm_dirty_info_enum_list, 905 ARRAY_SIZE(drm_dirty_info_enum_list)); 906 dev->mode_config.dirty_info_property = dirty_info; 907 908 return 0; 909} 910EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 911 912/** 913 * drm_mode_config_init - initialize DRM mode_configuration structure 914 * @dev: DRM device 915 * 916 * LOCKING: 917 * None, should happen single threaded at init time. 918 * 919 * Initialize @dev's mode_config structure, used for tracking the graphics 920 * configuration of @dev. 921 */ 922void drm_mode_config_init(struct drm_device *dev) 923{ 924 mutex_init(&dev->mode_config.mutex); 925 mutex_init(&dev->mode_config.idr_mutex); 926 INIT_LIST_HEAD(&dev->mode_config.fb_list); 927 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 928 INIT_LIST_HEAD(&dev->mode_config.connector_list); 929 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 930 INIT_LIST_HEAD(&dev->mode_config.property_list); 931 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 932 INIT_LIST_HEAD(&dev->mode_config.plane_list); 933 idr_init(&dev->mode_config.crtc_idr); 934 935 mutex_lock(&dev->mode_config.mutex); 936 drm_mode_create_standard_connector_properties(dev); 937 mutex_unlock(&dev->mode_config.mutex); 938 939 /* Just to be sure */ 940 dev->mode_config.num_fb = 0; 941 dev->mode_config.num_connector = 0; 942 dev->mode_config.num_crtc = 0; 943 dev->mode_config.num_encoder = 0; 944} 945EXPORT_SYMBOL(drm_mode_config_init); 946 947int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 948{ 949 uint32_t total_objects = 0; 950 951 total_objects += dev->mode_config.num_crtc; 952 total_objects += dev->mode_config.num_connector; 953 total_objects += dev->mode_config.num_encoder; 954 955 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 956 if (!group->id_list) 957 return -ENOMEM; 958 959 group->num_crtcs = 0; 960 group->num_connectors = 0; 961 group->num_encoders = 0; 962 return 0; 963} 964 965int drm_mode_group_init_legacy_group(struct drm_device *dev, 966 struct drm_mode_group *group) 967{ 968 struct drm_crtc *crtc; 969 struct drm_encoder *encoder; 970 struct drm_connector *connector; 971 int ret; 972 973 if ((ret = drm_mode_group_init(dev, group))) 974 return ret; 975 976 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 977 group->id_list[group->num_crtcs++] = crtc->base.id; 978 979 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 980 group->id_list[group->num_crtcs + group->num_encoders++] = 981 encoder->base.id; 982 983 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 984 group->id_list[group->num_crtcs + group->num_encoders + 985 group->num_connectors++] = connector->base.id; 986 987 return 0; 988} 989EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 990 991/** 992 * drm_mode_config_cleanup - free up DRM mode_config info 993 * @dev: DRM device 994 * 995 * LOCKING: 996 * Caller must hold mode config lock. 997 * 998 * Free up all the connectors and CRTCs associated with this DRM device, then 999 * free up the framebuffers and associated buffer objects. 1000 * 1001 * FIXME: cleanup any dangling user buffer objects too 1002 */ 1003void drm_mode_config_cleanup(struct drm_device *dev) 1004{ 1005 struct drm_connector *connector, *ot; 1006 struct drm_crtc *crtc, *ct; 1007 struct drm_encoder *encoder, *enct; 1008 struct drm_framebuffer *fb, *fbt; 1009 struct drm_property *property, *pt; 1010 struct drm_plane *plane, *plt; 1011 1012 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 1013 head) { 1014 encoder->funcs->destroy(encoder); 1015 } 1016 1017 list_for_each_entry_safe(connector, ot, 1018 &dev->mode_config.connector_list, head) { 1019 connector->funcs->destroy(connector); 1020 } 1021 1022 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 1023 head) { 1024 drm_property_destroy(dev, property); 1025 } 1026 1027 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 1028 fb->funcs->destroy(fb); 1029 } 1030 1031 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 1032 crtc->funcs->destroy(crtc); 1033 } 1034 1035 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 1036 head) { 1037 plane->funcs->destroy(plane); 1038 } 1039 1040 idr_remove_all(&dev->mode_config.crtc_idr); 1041 idr_destroy(&dev->mode_config.crtc_idr); 1042} 1043EXPORT_SYMBOL(drm_mode_config_cleanup); 1044 1045/** 1046 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1047 * @out: drm_mode_modeinfo struct to return to the user 1048 * @in: drm_display_mode to use 1049 * 1050 * LOCKING: 1051 * None. 1052 * 1053 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1054 * the user. 1055 */ 1056static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1057 const struct drm_display_mode *in) 1058{ 1059 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1060 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1061 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1062 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1063 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1064 "timing values too large for mode info\n"); 1065 1066 out->clock = in->clock; 1067 out->hdisplay = in->hdisplay; 1068 out->hsync_start = in->hsync_start; 1069 out->hsync_end = in->hsync_end; 1070 out->htotal = in->htotal; 1071 out->hskew = in->hskew; 1072 out->vdisplay = in->vdisplay; 1073 out->vsync_start = in->vsync_start; 1074 out->vsync_end = in->vsync_end; 1075 out->vtotal = in->vtotal; 1076 out->vscan = in->vscan; 1077 out->vrefresh = in->vrefresh; 1078 out->flags = in->flags; 1079 out->type = in->type; 1080 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1081 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1082} 1083 1084/** 1085 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 1086 * @out: drm_display_mode to return to the user 1087 * @in: drm_mode_modeinfo to use 1088 * 1089 * LOCKING: 1090 * None. 1091 * 1092 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1093 * the caller. 1094 * 1095 * RETURNS: 1096 * Zero on success, errno on failure. 1097 */ 1098static int drm_crtc_convert_umode(struct drm_display_mode *out, 1099 const struct drm_mode_modeinfo *in) 1100{ 1101 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1102 return -ERANGE; 1103 1104 out->clock = in->clock; 1105 out->hdisplay = in->hdisplay; 1106 out->hsync_start = in->hsync_start; 1107 out->hsync_end = in->hsync_end; 1108 out->htotal = in->htotal; 1109 out->hskew = in->hskew; 1110 out->vdisplay = in->vdisplay; 1111 out->vsync_start = in->vsync_start; 1112 out->vsync_end = in->vsync_end; 1113 out->vtotal = in->vtotal; 1114 out->vscan = in->vscan; 1115 out->vrefresh = in->vrefresh; 1116 out->flags = in->flags; 1117 out->type = in->type; 1118 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1119 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1120 1121 return 0; 1122} 1123 1124/** 1125 * drm_mode_getresources - get graphics configuration 1126 * @inode: inode from the ioctl 1127 * @filp: file * from the ioctl 1128 * @cmd: cmd from ioctl 1129 * @arg: arg from ioctl 1130 * 1131 * LOCKING: 1132 * Takes mode config lock. 1133 * 1134 * Construct a set of configuration description structures and return 1135 * them to the user, including CRTC, connector and framebuffer configuration. 1136 * 1137 * Called by the user via ioctl. 1138 * 1139 * RETURNS: 1140 * Zero on success, errno on failure. 1141 */ 1142int drm_mode_getresources(struct drm_device *dev, void *data, 1143 struct drm_file *file_priv) 1144{ 1145 struct drm_mode_card_res *card_res = data; 1146 struct list_head *lh; 1147 struct drm_framebuffer *fb; 1148 struct drm_connector *connector; 1149 struct drm_crtc *crtc; 1150 struct drm_encoder *encoder; 1151 int ret = 0; 1152 int connector_count = 0; 1153 int crtc_count = 0; 1154 int fb_count = 0; 1155 int encoder_count = 0; 1156 int copied = 0, i; 1157 uint32_t __user *fb_id; 1158 uint32_t __user *crtc_id; 1159 uint32_t __user *connector_id; 1160 uint32_t __user *encoder_id; 1161 struct drm_mode_group *mode_group; 1162 1163 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1164 return -EINVAL; 1165 1166 mutex_lock(&dev->mode_config.mutex); 1167 1168 /* 1169 * For the non-control nodes we need to limit the list of resources 1170 * by IDs in the group list for this node 1171 */ 1172 list_for_each(lh, &file_priv->fbs) 1173 fb_count++; 1174 1175 mode_group = &file_priv->master->minor->mode_group; 1176 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1177 1178 list_for_each(lh, &dev->mode_config.crtc_list) 1179 crtc_count++; 1180 1181 list_for_each(lh, &dev->mode_config.connector_list) 1182 connector_count++; 1183 1184 list_for_each(lh, &dev->mode_config.encoder_list) 1185 encoder_count++; 1186 } else { 1187 1188 crtc_count = mode_group->num_crtcs; 1189 connector_count = mode_group->num_connectors; 1190 encoder_count = mode_group->num_encoders; 1191 } 1192 1193 card_res->max_height = dev->mode_config.max_height; 1194 card_res->min_height = dev->mode_config.min_height; 1195 card_res->max_width = dev->mode_config.max_width; 1196 card_res->min_width = dev->mode_config.min_width; 1197 1198 /* handle this in 4 parts */ 1199 /* FBs */ 1200 if (card_res->count_fbs >= fb_count) { 1201 copied = 0; 1202 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1203 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1204 if (put_user(fb->base.id, fb_id + copied)) { 1205 ret = -EFAULT; 1206 goto out; 1207 } 1208 copied++; 1209 } 1210 } 1211 card_res->count_fbs = fb_count; 1212 1213 /* CRTCs */ 1214 if (card_res->count_crtcs >= crtc_count) { 1215 copied = 0; 1216 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1217 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1218 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1219 head) { 1220 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1221 if (put_user(crtc->base.id, crtc_id + copied)) { 1222 ret = -EFAULT; 1223 goto out; 1224 } 1225 copied++; 1226 } 1227 } else { 1228 for (i = 0; i < mode_group->num_crtcs; i++) { 1229 if (put_user(mode_group->id_list[i], 1230 crtc_id + copied)) { 1231 ret = -EFAULT; 1232 goto out; 1233 } 1234 copied++; 1235 } 1236 } 1237 } 1238 card_res->count_crtcs = crtc_count; 1239 1240 /* Encoders */ 1241 if (card_res->count_encoders >= encoder_count) { 1242 copied = 0; 1243 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1244 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1245 list_for_each_entry(encoder, 1246 &dev->mode_config.encoder_list, 1247 head) { 1248 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1249 drm_get_encoder_name(encoder)); 1250 if (put_user(encoder->base.id, encoder_id + 1251 copied)) { 1252 ret = -EFAULT; 1253 goto out; 1254 } 1255 copied++; 1256 } 1257 } else { 1258 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1259 if (put_user(mode_group->id_list[i], 1260 encoder_id + copied)) { 1261 ret = -EFAULT; 1262 goto out; 1263 } 1264 copied++; 1265 } 1266 1267 } 1268 } 1269 card_res->count_encoders = encoder_count; 1270 1271 /* Connectors */ 1272 if (card_res->count_connectors >= connector_count) { 1273 copied = 0; 1274 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1275 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1276 list_for_each_entry(connector, 1277 &dev->mode_config.connector_list, 1278 head) { 1279 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1280 connector->base.id, 1281 drm_get_connector_name(connector)); 1282 if (put_user(connector->base.id, 1283 connector_id + copied)) { 1284 ret = -EFAULT; 1285 goto out; 1286 } 1287 copied++; 1288 } 1289 } else { 1290 int start = mode_group->num_crtcs + 1291 mode_group->num_encoders; 1292 for (i = start; i < start + mode_group->num_connectors; i++) { 1293 if (put_user(mode_group->id_list[i], 1294 connector_id + copied)) { 1295 ret = -EFAULT; 1296 goto out; 1297 } 1298 copied++; 1299 } 1300 } 1301 } 1302 card_res->count_connectors = connector_count; 1303 1304 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1305 card_res->count_connectors, card_res->count_encoders); 1306 1307out: 1308 mutex_unlock(&dev->mode_config.mutex); 1309 return ret; 1310} 1311 1312/** 1313 * drm_mode_getcrtc - get CRTC configuration 1314 * @inode: inode from the ioctl 1315 * @filp: file * from the ioctl 1316 * @cmd: cmd from ioctl 1317 * @arg: arg from ioctl 1318 * 1319 * LOCKING: 1320 * Takes mode config lock. 1321 * 1322 * Construct a CRTC configuration structure to return to the user. 1323 * 1324 * Called by the user via ioctl. 1325 * 1326 * RETURNS: 1327 * Zero on success, errno on failure. 1328 */ 1329int drm_mode_getcrtc(struct drm_device *dev, 1330 void *data, struct drm_file *file_priv) 1331{ 1332 struct drm_mode_crtc *crtc_resp = data; 1333 struct drm_crtc *crtc; 1334 struct drm_mode_object *obj; 1335 int ret = 0; 1336 1337 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1338 return -EINVAL; 1339 1340 mutex_lock(&dev->mode_config.mutex); 1341 1342 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1343 DRM_MODE_OBJECT_CRTC); 1344 if (!obj) { 1345 ret = -EINVAL; 1346 goto out; 1347 } 1348 crtc = obj_to_crtc(obj); 1349 1350 crtc_resp->x = crtc->x; 1351 crtc_resp->y = crtc->y; 1352 crtc_resp->gamma_size = crtc->gamma_size; 1353 if (crtc->fb) 1354 crtc_resp->fb_id = crtc->fb->base.id; 1355 else 1356 crtc_resp->fb_id = 0; 1357 1358 if (crtc->enabled) { 1359 1360 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1361 crtc_resp->mode_valid = 1; 1362 1363 } else { 1364 crtc_resp->mode_valid = 0; 1365 } 1366 1367out: 1368 mutex_unlock(&dev->mode_config.mutex); 1369 return ret; 1370} 1371 1372/** 1373 * drm_mode_getconnector - get connector configuration 1374 * @inode: inode from the ioctl 1375 * @filp: file * from the ioctl 1376 * @cmd: cmd from ioctl 1377 * @arg: arg from ioctl 1378 * 1379 * LOCKING: 1380 * Takes mode config lock. 1381 * 1382 * Construct a connector configuration structure to return to the user. 1383 * 1384 * Called by the user via ioctl. 1385 * 1386 * RETURNS: 1387 * Zero on success, errno on failure. 1388 */ 1389int drm_mode_getconnector(struct drm_device *dev, void *data, 1390 struct drm_file *file_priv) 1391{ 1392 struct drm_mode_get_connector *out_resp = data; 1393 struct drm_mode_object *obj; 1394 struct drm_connector *connector; 1395 struct drm_display_mode *mode; 1396 int mode_count = 0; 1397 int props_count = 0; 1398 int encoders_count = 0; 1399 int ret = 0; 1400 int copied = 0; 1401 int i; 1402 struct drm_mode_modeinfo u_mode; 1403 struct drm_mode_modeinfo __user *mode_ptr; 1404 uint32_t __user *prop_ptr; 1405 uint64_t __user *prop_values; 1406 uint32_t __user *encoder_ptr; 1407 1408 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1409 return -EINVAL; 1410 1411 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1412 1413 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1414 1415 mutex_lock(&dev->mode_config.mutex); 1416 1417 obj = drm_mode_object_find(dev, out_resp->connector_id, 1418 DRM_MODE_OBJECT_CONNECTOR); 1419 if (!obj) { 1420 ret = -EINVAL; 1421 goto out; 1422 } 1423 connector = obj_to_connector(obj); 1424 1425 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 1426 if (connector->property_ids[i] != 0) { 1427 props_count++; 1428 } 1429 } 1430 1431 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1432 if (connector->encoder_ids[i] != 0) { 1433 encoders_count++; 1434 } 1435 } 1436 1437 if (out_resp->count_modes == 0) { 1438 connector->funcs->fill_modes(connector, 1439 dev->mode_config.max_width, 1440 dev->mode_config.max_height); 1441 } 1442 1443 /* delayed so we get modes regardless of pre-fill_modes state */ 1444 list_for_each_entry(mode, &connector->modes, head) 1445 mode_count++; 1446 1447 out_resp->connector_id = connector->base.id; 1448 out_resp->connector_type = connector->connector_type; 1449 out_resp->connector_type_id = connector->connector_type_id; 1450 out_resp->mm_width = connector->display_info.width_mm; 1451 out_resp->mm_height = connector->display_info.height_mm; 1452 out_resp->subpixel = connector->display_info.subpixel_order; 1453 out_resp->connection = connector->status; 1454 if (connector->encoder) 1455 out_resp->encoder_id = connector->encoder->base.id; 1456 else 1457 out_resp->encoder_id = 0; 1458 1459 /* 1460 * This ioctl is called twice, once to determine how much space is 1461 * needed, and the 2nd time to fill it. 1462 */ 1463 if ((out_resp->count_modes >= mode_count) && mode_count) { 1464 copied = 0; 1465 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1466 list_for_each_entry(mode, &connector->modes, head) { 1467 drm_crtc_convert_to_umode(&u_mode, mode); 1468 if (copy_to_user(mode_ptr + copied, 1469 &u_mode, sizeof(u_mode))) { 1470 ret = -EFAULT; 1471 goto out; 1472 } 1473 copied++; 1474 } 1475 } 1476 out_resp->count_modes = mode_count; 1477 1478 if ((out_resp->count_props >= props_count) && props_count) { 1479 copied = 0; 1480 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1481 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1482 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 1483 if (connector->property_ids[i] != 0) { 1484 if (put_user(connector->property_ids[i], 1485 prop_ptr + copied)) { 1486 ret = -EFAULT; 1487 goto out; 1488 } 1489 1490 if (put_user(connector->property_values[i], 1491 prop_values + copied)) { 1492 ret = -EFAULT; 1493 goto out; 1494 } 1495 copied++; 1496 } 1497 } 1498 } 1499 out_resp->count_props = props_count; 1500 1501 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1502 copied = 0; 1503 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1504 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1505 if (connector->encoder_ids[i] != 0) { 1506 if (put_user(connector->encoder_ids[i], 1507 encoder_ptr + copied)) { 1508 ret = -EFAULT; 1509 goto out; 1510 } 1511 copied++; 1512 } 1513 } 1514 } 1515 out_resp->count_encoders = encoders_count; 1516 1517out: 1518 mutex_unlock(&dev->mode_config.mutex); 1519 return ret; 1520} 1521 1522int drm_mode_getencoder(struct drm_device *dev, void *data, 1523 struct drm_file *file_priv) 1524{ 1525 struct drm_mode_get_encoder *enc_resp = data; 1526 struct drm_mode_object *obj; 1527 struct drm_encoder *encoder; 1528 int ret = 0; 1529 1530 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1531 return -EINVAL; 1532 1533 mutex_lock(&dev->mode_config.mutex); 1534 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1535 DRM_MODE_OBJECT_ENCODER); 1536 if (!obj) { 1537 ret = -EINVAL; 1538 goto out; 1539 } 1540 encoder = obj_to_encoder(obj); 1541 1542 if (encoder->crtc) 1543 enc_resp->crtc_id = encoder->crtc->base.id; 1544 else 1545 enc_resp->crtc_id = 0; 1546 enc_resp->encoder_type = encoder->encoder_type; 1547 enc_resp->encoder_id = encoder->base.id; 1548 enc_resp->possible_crtcs = encoder->possible_crtcs; 1549 enc_resp->possible_clones = encoder->possible_clones; 1550 1551out: 1552 mutex_unlock(&dev->mode_config.mutex); 1553 return ret; 1554} 1555 1556/** 1557 * drm_mode_getplane_res - get plane info 1558 * @dev: DRM device 1559 * @data: ioctl data 1560 * @file_priv: DRM file info 1561 * 1562 * LOCKING: 1563 * Takes mode config lock. 1564 * 1565 * Return an plane count and set of IDs. 1566 */ 1567int drm_mode_getplane_res(struct drm_device *dev, void *data, 1568 struct drm_file *file_priv) 1569{ 1570 struct drm_mode_get_plane_res *plane_resp = data; 1571 struct drm_mode_config *config; 1572 struct drm_plane *plane; 1573 uint32_t __user *plane_ptr; 1574 int copied = 0, ret = 0; 1575 1576 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1577 return -EINVAL; 1578 1579 mutex_lock(&dev->mode_config.mutex); 1580 config = &dev->mode_config; 1581 1582 /* 1583 * This ioctl is called twice, once to determine how much space is 1584 * needed, and the 2nd time to fill it. 1585 */ 1586 if (config->num_plane && 1587 (plane_resp->count_planes >= config->num_plane)) { 1588 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1589 1590 list_for_each_entry(plane, &config->plane_list, head) { 1591 if (put_user(plane->base.id, plane_ptr + copied)) { 1592 ret = -EFAULT; 1593 goto out; 1594 } 1595 copied++; 1596 } 1597 } 1598 plane_resp->count_planes = config->num_plane; 1599 1600out: 1601 mutex_unlock(&dev->mode_config.mutex); 1602 return ret; 1603} 1604 1605/** 1606 * drm_mode_getplane - get plane info 1607 * @dev: DRM device 1608 * @data: ioctl data 1609 * @file_priv: DRM file info 1610 * 1611 * LOCKING: 1612 * Takes mode config lock. 1613 * 1614 * Return plane info, including formats supported, gamma size, any 1615 * current fb, etc. 1616 */ 1617int drm_mode_getplane(struct drm_device *dev, void *data, 1618 struct drm_file *file_priv) 1619{ 1620 struct drm_mode_get_plane *plane_resp = data; 1621 struct drm_mode_object *obj; 1622 struct drm_plane *plane; 1623 uint32_t __user *format_ptr; 1624 int ret = 0; 1625 1626 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1627 return -EINVAL; 1628 1629 mutex_lock(&dev->mode_config.mutex); 1630 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1631 DRM_MODE_OBJECT_PLANE); 1632 if (!obj) { 1633 ret = -ENOENT; 1634 goto out; 1635 } 1636 plane = obj_to_plane(obj); 1637 1638 if (plane->crtc) 1639 plane_resp->crtc_id = plane->crtc->base.id; 1640 else 1641 plane_resp->crtc_id = 0; 1642 1643 if (plane->fb) 1644 plane_resp->fb_id = plane->fb->base.id; 1645 else 1646 plane_resp->fb_id = 0; 1647 1648 plane_resp->plane_id = plane->base.id; 1649 plane_resp->possible_crtcs = plane->possible_crtcs; 1650 plane_resp->gamma_size = plane->gamma_size; 1651 1652 /* 1653 * This ioctl is called twice, once to determine how much space is 1654 * needed, and the 2nd time to fill it. 1655 */ 1656 if (plane->format_count && 1657 (plane_resp->count_format_types >= plane->format_count)) { 1658 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1659 if (copy_to_user(format_ptr, 1660 plane->format_types, 1661 sizeof(uint32_t) * plane->format_count)) { 1662 ret = -EFAULT; 1663 goto out; 1664 } 1665 } 1666 plane_resp->count_format_types = plane->format_count; 1667 1668out: 1669 mutex_unlock(&dev->mode_config.mutex); 1670 return ret; 1671} 1672 1673/** 1674 * drm_mode_setplane - set up or tear down an plane 1675 * @dev: DRM device 1676 * @data: ioctl data* 1677 * @file_prive: DRM file info 1678 * 1679 * LOCKING: 1680 * Takes mode config lock. 1681 * 1682 * Set plane info, including placement, fb, scaling, and other factors. 1683 * Or pass a NULL fb to disable. 1684 */ 1685int drm_mode_setplane(struct drm_device *dev, void *data, 1686 struct drm_file *file_priv) 1687{ 1688 struct drm_mode_set_plane *plane_req = data; 1689 struct drm_mode_object *obj; 1690 struct drm_plane *plane; 1691 struct drm_crtc *crtc; 1692 struct drm_framebuffer *fb; 1693 int ret = 0; 1694 unsigned int fb_width, fb_height; 1695 int i; 1696 1697 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1698 return -EINVAL; 1699 1700 mutex_lock(&dev->mode_config.mutex); 1701 1702 /* 1703 * First, find the plane, crtc, and fb objects. If not available, 1704 * we don't bother to call the driver. 1705 */ 1706 obj = drm_mode_object_find(dev, plane_req->plane_id, 1707 DRM_MODE_OBJECT_PLANE); 1708 if (!obj) { 1709 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1710 plane_req->plane_id); 1711 ret = -ENOENT; 1712 goto out; 1713 } 1714 plane = obj_to_plane(obj); 1715 1716 /* No fb means shut it down */ 1717 if (!plane_req->fb_id) { 1718 plane->funcs->disable_plane(plane); 1719 plane->crtc = NULL; 1720 plane->fb = NULL; 1721 goto out; 1722 } 1723 1724 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1725 DRM_MODE_OBJECT_CRTC); 1726 if (!obj) { 1727 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1728 plane_req->crtc_id); 1729 ret = -ENOENT; 1730 goto out; 1731 } 1732 crtc = obj_to_crtc(obj); 1733 1734 obj = drm_mode_object_find(dev, plane_req->fb_id, 1735 DRM_MODE_OBJECT_FB); 1736 if (!obj) { 1737 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1738 plane_req->fb_id); 1739 ret = -ENOENT; 1740 goto out; 1741 } 1742 fb = obj_to_fb(obj); 1743 1744 /* Check whether this plane supports the fb pixel format. */ 1745 for (i = 0; i < plane->format_count; i++) 1746 if (fb->pixel_format == plane->format_types[i]) 1747 break; 1748 if (i == plane->format_count) { 1749 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format); 1750 ret = -EINVAL; 1751 goto out; 1752 } 1753 1754 fb_width = fb->width << 16; 1755 fb_height = fb->height << 16; 1756 1757 /* Make sure source coordinates are inside the fb. */ 1758 if (plane_req->src_w > fb_width || 1759 plane_req->src_x > fb_width - plane_req->src_w || 1760 plane_req->src_h > fb_height || 1761 plane_req->src_y > fb_height - plane_req->src_h) { 1762 DRM_DEBUG_KMS("Invalid source coordinates " 1763 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1764 plane_req->src_w >> 16, 1765 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1766 plane_req->src_h >> 16, 1767 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1768 plane_req->src_x >> 16, 1769 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1770 plane_req->src_y >> 16, 1771 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1772 ret = -ENOSPC; 1773 goto out; 1774 } 1775 1776 /* Give drivers some help against integer overflows */ 1777 if (plane_req->crtc_w > INT_MAX || 1778 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1779 plane_req->crtc_h > INT_MAX || 1780 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1781 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1782 plane_req->crtc_w, plane_req->crtc_h, 1783 plane_req->crtc_x, plane_req->crtc_y); 1784 ret = -ERANGE; 1785 goto out; 1786 } 1787 1788 ret = plane->funcs->update_plane(plane, crtc, fb, 1789 plane_req->crtc_x, plane_req->crtc_y, 1790 plane_req->crtc_w, plane_req->crtc_h, 1791 plane_req->src_x, plane_req->src_y, 1792 plane_req->src_w, plane_req->src_h); 1793 if (!ret) { 1794 plane->crtc = crtc; 1795 plane->fb = fb; 1796 } 1797 1798out: 1799 mutex_unlock(&dev->mode_config.mutex); 1800 1801 return ret; 1802} 1803 1804/** 1805 * drm_mode_setcrtc - set CRTC configuration 1806 * @inode: inode from the ioctl 1807 * @filp: file * from the ioctl 1808 * @cmd: cmd from ioctl 1809 * @arg: arg from ioctl 1810 * 1811 * LOCKING: 1812 * Takes mode config lock. 1813 * 1814 * Build a new CRTC configuration based on user request. 1815 * 1816 * Called by the user via ioctl. 1817 * 1818 * RETURNS: 1819 * Zero on success, errno on failure. 1820 */ 1821int drm_mode_setcrtc(struct drm_device *dev, void *data, 1822 struct drm_file *file_priv) 1823{ 1824 struct drm_mode_config *config = &dev->mode_config; 1825 struct drm_mode_crtc *crtc_req = data; 1826 struct drm_mode_object *obj; 1827 struct drm_crtc *crtc; 1828 struct drm_connector **connector_set = NULL, *connector; 1829 struct drm_framebuffer *fb = NULL; 1830 struct drm_display_mode *mode = NULL; 1831 struct drm_mode_set set; 1832 uint32_t __user *set_connectors_ptr; 1833 int ret = 0; 1834 int i; 1835 1836 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1837 return -EINVAL; 1838 1839 /* For some reason crtc x/y offsets are signed internally. */ 1840 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 1841 return -ERANGE; 1842 1843 mutex_lock(&dev->mode_config.mutex); 1844 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 1845 DRM_MODE_OBJECT_CRTC); 1846 if (!obj) { 1847 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 1848 ret = -EINVAL; 1849 goto out; 1850 } 1851 crtc = obj_to_crtc(obj); 1852 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1853 1854 if (crtc_req->mode_valid) { 1855 /* If we have a mode we need a framebuffer. */ 1856 /* If we pass -1, set the mode with the currently bound fb */ 1857 if (crtc_req->fb_id == -1) { 1858 if (!crtc->fb) { 1859 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 1860 ret = -EINVAL; 1861 goto out; 1862 } 1863 fb = crtc->fb; 1864 } else { 1865 obj = drm_mode_object_find(dev, crtc_req->fb_id, 1866 DRM_MODE_OBJECT_FB); 1867 if (!obj) { 1868 DRM_DEBUG_KMS("Unknown FB ID%d\n", 1869 crtc_req->fb_id); 1870 ret = -EINVAL; 1871 goto out; 1872 } 1873 fb = obj_to_fb(obj); 1874 } 1875 1876 mode = drm_mode_create(dev); 1877 if (!mode) { 1878 ret = -ENOMEM; 1879 goto out; 1880 } 1881 1882 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 1883 if (ret) { 1884 DRM_DEBUG_KMS("Invalid mode\n"); 1885 goto out; 1886 } 1887 1888 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1889 1890 if (mode->hdisplay > fb->width || 1891 mode->vdisplay > fb->height || 1892 crtc_req->x > fb->width - mode->hdisplay || 1893 crtc_req->y > fb->height - mode->vdisplay) { 1894 DRM_DEBUG_KMS("Invalid CRTC viewport %ux%u+%u+%u for fb size %ux%u.\n", 1895 mode->hdisplay, mode->vdisplay, 1896 crtc_req->x, crtc_req->y, 1897 fb->width, fb->height); 1898 ret = -ENOSPC; 1899 goto out; 1900 } 1901 } 1902 1903 if (crtc_req->count_connectors == 0 && mode) { 1904 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 1905 ret = -EINVAL; 1906 goto out; 1907 } 1908 1909 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 1910 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 1911 crtc_req->count_connectors); 1912 ret = -EINVAL; 1913 goto out; 1914 } 1915 1916 if (crtc_req->count_connectors > 0) { 1917 u32 out_id; 1918 1919 /* Avoid unbounded kernel memory allocation */ 1920 if (crtc_req->count_connectors > config->num_connector) { 1921 ret = -EINVAL; 1922 goto out; 1923 } 1924 1925 connector_set = kmalloc(crtc_req->count_connectors * 1926 sizeof(struct drm_connector *), 1927 GFP_KERNEL); 1928 if (!connector_set) { 1929 ret = -ENOMEM; 1930 goto out; 1931 } 1932 1933 for (i = 0; i < crtc_req->count_connectors; i++) { 1934 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 1935 if (get_user(out_id, &set_connectors_ptr[i])) { 1936 ret = -EFAULT; 1937 goto out; 1938 } 1939 1940 obj = drm_mode_object_find(dev, out_id, 1941 DRM_MODE_OBJECT_CONNECTOR); 1942 if (!obj) { 1943 DRM_DEBUG_KMS("Connector id %d unknown\n", 1944 out_id); 1945 ret = -EINVAL; 1946 goto out; 1947 } 1948 connector = obj_to_connector(obj); 1949 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1950 connector->base.id, 1951 drm_get_connector_name(connector)); 1952 1953 connector_set[i] = connector; 1954 } 1955 } 1956 1957 set.crtc = crtc; 1958 set.x = crtc_req->x; 1959 set.y = crtc_req->y; 1960 set.mode = mode; 1961 set.connectors = connector_set; 1962 set.num_connectors = crtc_req->count_connectors; 1963 set.fb = fb; 1964 ret = crtc->funcs->set_config(&set); 1965 1966out: 1967 kfree(connector_set); 1968 drm_mode_destroy(dev, mode); 1969 mutex_unlock(&dev->mode_config.mutex); 1970 return ret; 1971} 1972 1973int drm_mode_cursor_ioctl(struct drm_device *dev, 1974 void *data, struct drm_file *file_priv) 1975{ 1976 struct drm_mode_cursor *req = data; 1977 struct drm_mode_object *obj; 1978 struct drm_crtc *crtc; 1979 int ret = 0; 1980 1981 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1982 return -EINVAL; 1983 1984 if (!req->flags) 1985 return -EINVAL; 1986 1987 mutex_lock(&dev->mode_config.mutex); 1988 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 1989 if (!obj) { 1990 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 1991 ret = -EINVAL; 1992 goto out; 1993 } 1994 crtc = obj_to_crtc(obj); 1995 1996 if (req->flags & DRM_MODE_CURSOR_BO) { 1997 if (!crtc->funcs->cursor_set) { 1998 ret = -ENXIO; 1999 goto out; 2000 } 2001 /* Turns off the cursor if handle is 0 */ 2002 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2003 req->width, req->height); 2004 } 2005 2006 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2007 if (crtc->funcs->cursor_move) { 2008 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2009 } else { 2010 ret = -EFAULT; 2011 goto out; 2012 } 2013 } 2014out: 2015 mutex_unlock(&dev->mode_config.mutex); 2016 return ret; 2017} 2018 2019/* Original addfb only supported RGB formats, so figure out which one */ 2020uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2021{ 2022 uint32_t fmt; 2023 2024 switch (bpp) { 2025 case 8: 2026 fmt = DRM_FORMAT_RGB332; 2027 break; 2028 case 16: 2029 if (depth == 15) 2030 fmt = DRM_FORMAT_XRGB1555; 2031 else 2032 fmt = DRM_FORMAT_RGB565; 2033 break; 2034 case 24: 2035 fmt = DRM_FORMAT_RGB888; 2036 break; 2037 case 32: 2038 if (depth == 24) 2039 fmt = DRM_FORMAT_XRGB8888; 2040 else if (depth == 30) 2041 fmt = DRM_FORMAT_XRGB2101010; 2042 else 2043 fmt = DRM_FORMAT_ARGB8888; 2044 break; 2045 default: 2046 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2047 fmt = DRM_FORMAT_XRGB8888; 2048 break; 2049 } 2050 2051 return fmt; 2052} 2053EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2054 2055/** 2056 * drm_mode_addfb - add an FB to the graphics configuration 2057 * @inode: inode from the ioctl 2058 * @filp: file * from the ioctl 2059 * @cmd: cmd from ioctl 2060 * @arg: arg from ioctl 2061 * 2062 * LOCKING: 2063 * Takes mode config lock. 2064 * 2065 * Add a new FB to the specified CRTC, given a user request. 2066 * 2067 * Called by the user via ioctl. 2068 * 2069 * RETURNS: 2070 * Zero on success, errno on failure. 2071 */ 2072int drm_mode_addfb(struct drm_device *dev, 2073 void *data, struct drm_file *file_priv) 2074{ 2075 struct drm_mode_fb_cmd *or = data; 2076 struct drm_mode_fb_cmd2 r = {}; 2077 struct drm_mode_config *config = &dev->mode_config; 2078 struct drm_framebuffer *fb; 2079 int ret = 0; 2080 2081 /* Use new struct with format internally */ 2082 r.fb_id = or->fb_id; 2083 r.width = or->width; 2084 r.height = or->height; 2085 r.pitches[0] = or->pitch; 2086 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2087 r.handles[0] = or->handle; 2088 2089 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2090 return -EINVAL; 2091 2092 if ((config->min_width > r.width) || (r.width > config->max_width)) 2093 return -EINVAL; 2094 2095 if ((config->min_height > r.height) || (r.height > config->max_height)) 2096 return -EINVAL; 2097 2098 mutex_lock(&dev->mode_config.mutex); 2099 2100 /* TODO check buffer is sufficiently large */ 2101 /* TODO setup destructor callback */ 2102 2103 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2104 if (IS_ERR(fb)) { 2105 DRM_ERROR("could not create framebuffer\n"); 2106 ret = PTR_ERR(fb); 2107 goto out; 2108 } 2109 2110 or->fb_id = fb->base.id; 2111 list_add(&fb->filp_head, &file_priv->fbs); 2112 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2113 2114out: 2115 mutex_unlock(&dev->mode_config.mutex); 2116 return ret; 2117} 2118 2119static int format_check(struct drm_mode_fb_cmd2 *r) 2120{ 2121 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2122 2123 switch (format) { 2124 case DRM_FORMAT_C8: 2125 case DRM_FORMAT_RGB332: 2126 case DRM_FORMAT_BGR233: 2127 case DRM_FORMAT_XRGB4444: 2128 case DRM_FORMAT_XBGR4444: 2129 case DRM_FORMAT_RGBX4444: 2130 case DRM_FORMAT_BGRX4444: 2131 case DRM_FORMAT_ARGB4444: 2132 case DRM_FORMAT_ABGR4444: 2133 case DRM_FORMAT_RGBA4444: 2134 case DRM_FORMAT_BGRA4444: 2135 case DRM_FORMAT_XRGB1555: 2136 case DRM_FORMAT_XBGR1555: 2137 case DRM_FORMAT_RGBX5551: 2138 case DRM_FORMAT_BGRX5551: 2139 case DRM_FORMAT_ARGB1555: 2140 case DRM_FORMAT_ABGR1555: 2141 case DRM_FORMAT_RGBA5551: 2142 case DRM_FORMAT_BGRA5551: 2143 case DRM_FORMAT_RGB565: 2144 case DRM_FORMAT_BGR565: 2145 case DRM_FORMAT_RGB888: 2146 case DRM_FORMAT_BGR888: 2147 case DRM_FORMAT_XRGB8888: 2148 case DRM_FORMAT_XBGR8888: 2149 case DRM_FORMAT_RGBX8888: 2150 case DRM_FORMAT_BGRX8888: 2151 case DRM_FORMAT_ARGB8888: 2152 case DRM_FORMAT_ABGR8888: 2153 case DRM_FORMAT_RGBA8888: 2154 case DRM_FORMAT_BGRA8888: 2155 case DRM_FORMAT_XRGB2101010: 2156 case DRM_FORMAT_XBGR2101010: 2157 case DRM_FORMAT_RGBX1010102: 2158 case DRM_FORMAT_BGRX1010102: 2159 case DRM_FORMAT_ARGB2101010: 2160 case DRM_FORMAT_ABGR2101010: 2161 case DRM_FORMAT_RGBA1010102: 2162 case DRM_FORMAT_BGRA1010102: 2163 case DRM_FORMAT_YUYV: 2164 case DRM_FORMAT_YVYU: 2165 case DRM_FORMAT_UYVY: 2166 case DRM_FORMAT_VYUY: 2167 case DRM_FORMAT_AYUV: 2168 case DRM_FORMAT_NV12: 2169 case DRM_FORMAT_NV21: 2170 case DRM_FORMAT_NV16: 2171 case DRM_FORMAT_NV61: 2172 case DRM_FORMAT_YUV410: 2173 case DRM_FORMAT_YVU410: 2174 case DRM_FORMAT_YUV411: 2175 case DRM_FORMAT_YVU411: 2176 case DRM_FORMAT_YUV420: 2177 case DRM_FORMAT_YVU420: 2178 case DRM_FORMAT_YUV422: 2179 case DRM_FORMAT_YVU422: 2180 case DRM_FORMAT_YUV444: 2181 case DRM_FORMAT_YVU444: 2182 return 0; 2183 default: 2184 return -EINVAL; 2185 } 2186} 2187 2188static int framebuffer_check(struct drm_mode_fb_cmd2 *r) 2189{ 2190 int ret, hsub, vsub, num_planes, i; 2191 2192 ret = format_check(r); 2193 if (ret) { 2194 DRM_ERROR("bad framebuffer format 0x%08x\n", r->pixel_format); 2195 return ret; 2196 } 2197 2198 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2199 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2200 num_planes = drm_format_num_planes(r->pixel_format); 2201 2202 if (r->width == 0 || r->width % hsub) { 2203 DRM_ERROR("bad framebuffer width %u\n", r->height); 2204 return -EINVAL; 2205 } 2206 2207 if (r->height == 0 || r->height % vsub) { 2208 DRM_ERROR("bad framebuffer height %u\n", r->height); 2209 return -EINVAL; 2210 } 2211 2212 for (i = 0; i < num_planes; i++) { 2213 unsigned int width = r->width / (i != 0 ? hsub : 1); 2214 2215 if (!r->handles[i]) { 2216 DRM_ERROR("no buffer object handle for plane %d\n", i); 2217 return -EINVAL; 2218 } 2219 2220 if (r->pitches[i] < drm_format_plane_cpp(r->pixel_format, i) * width) { 2221 DRM_ERROR("bad pitch %u for plane %d\n", r->pitches[i], i); 2222 return -EINVAL; 2223 } 2224 } 2225 2226 return 0; 2227} 2228 2229/** 2230 * drm_mode_addfb2 - add an FB to the graphics configuration 2231 * @inode: inode from the ioctl 2232 * @filp: file * from the ioctl 2233 * @cmd: cmd from ioctl 2234 * @arg: arg from ioctl 2235 * 2236 * LOCKING: 2237 * Takes mode config lock. 2238 * 2239 * Add a new FB to the specified CRTC, given a user request with format. 2240 * 2241 * Called by the user via ioctl. 2242 * 2243 * RETURNS: 2244 * Zero on success, errno on failure. 2245 */ 2246int drm_mode_addfb2(struct drm_device *dev, 2247 void *data, struct drm_file *file_priv) 2248{ 2249 struct drm_mode_fb_cmd2 *r = data; 2250 struct drm_mode_config *config = &dev->mode_config; 2251 struct drm_framebuffer *fb; 2252 int ret = 0; 2253 2254 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2255 return -EINVAL; 2256 2257 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2258 DRM_ERROR("bad framebuffer width %d, should be >= %d && <= %d\n", 2259 r->width, config->min_width, config->max_width); 2260 return -EINVAL; 2261 } 2262 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2263 DRM_ERROR("bad framebuffer height %d, should be >= %d && <= %d\n", 2264 r->height, config->min_height, config->max_height); 2265 return -EINVAL; 2266 } 2267 2268 ret = framebuffer_check(r); 2269 if (ret) 2270 return ret; 2271 2272 mutex_lock(&dev->mode_config.mutex); 2273 2274 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2275 if (IS_ERR(fb)) { 2276 DRM_ERROR("could not create framebuffer\n"); 2277 ret = PTR_ERR(fb); 2278 goto out; 2279 } 2280 2281 r->fb_id = fb->base.id; 2282 list_add(&fb->filp_head, &file_priv->fbs); 2283 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2284 2285out: 2286 mutex_unlock(&dev->mode_config.mutex); 2287 return ret; 2288} 2289 2290/** 2291 * drm_mode_rmfb - remove an FB from the configuration 2292 * @inode: inode from the ioctl 2293 * @filp: file * from the ioctl 2294 * @cmd: cmd from ioctl 2295 * @arg: arg from ioctl 2296 * 2297 * LOCKING: 2298 * Takes mode config lock. 2299 * 2300 * Remove the FB specified by the user. 2301 * 2302 * Called by the user via ioctl. 2303 * 2304 * RETURNS: 2305 * Zero on success, errno on failure. 2306 */ 2307int drm_mode_rmfb(struct drm_device *dev, 2308 void *data, struct drm_file *file_priv) 2309{ 2310 struct drm_mode_object *obj; 2311 struct drm_framebuffer *fb = NULL; 2312 struct drm_framebuffer *fbl = NULL; 2313 uint32_t *id = data; 2314 int ret = 0; 2315 int found = 0; 2316 2317 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2318 return -EINVAL; 2319 2320 mutex_lock(&dev->mode_config.mutex); 2321 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB); 2322 /* TODO check that we really get a framebuffer back. */ 2323 if (!obj) { 2324 ret = -EINVAL; 2325 goto out; 2326 } 2327 fb = obj_to_fb(obj); 2328 2329 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2330 if (fb == fbl) 2331 found = 1; 2332 2333 if (!found) { 2334 ret = -EINVAL; 2335 goto out; 2336 } 2337 2338 /* TODO release all crtc connected to the framebuffer */ 2339 /* TODO unhock the destructor from the buffer object */ 2340 2341 list_del(&fb->filp_head); 2342 fb->funcs->destroy(fb); 2343 2344out: 2345 mutex_unlock(&dev->mode_config.mutex); 2346 return ret; 2347} 2348 2349/** 2350 * drm_mode_getfb - get FB info 2351 * @inode: inode from the ioctl 2352 * @filp: file * from the ioctl 2353 * @cmd: cmd from ioctl 2354 * @arg: arg from ioctl 2355 * 2356 * LOCKING: 2357 * Takes mode config lock. 2358 * 2359 * Lookup the FB given its ID and return info about it. 2360 * 2361 * Called by the user via ioctl. 2362 * 2363 * RETURNS: 2364 * Zero on success, errno on failure. 2365 */ 2366int drm_mode_getfb(struct drm_device *dev, 2367 void *data, struct drm_file *file_priv) 2368{ 2369 struct drm_mode_fb_cmd *r = data; 2370 struct drm_mode_object *obj; 2371 struct drm_framebuffer *fb; 2372 int ret = 0; 2373 2374 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2375 return -EINVAL; 2376 2377 mutex_lock(&dev->mode_config.mutex); 2378 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); 2379 if (!obj) { 2380 ret = -EINVAL; 2381 goto out; 2382 } 2383 fb = obj_to_fb(obj); 2384 2385 r->height = fb->height; 2386 r->width = fb->width; 2387 r->depth = fb->depth; 2388 r->bpp = fb->bits_per_pixel; 2389 r->pitch = fb->pitches[0]; 2390 fb->funcs->create_handle(fb, file_priv, &r->handle); 2391 2392out: 2393 mutex_unlock(&dev->mode_config.mutex); 2394 return ret; 2395} 2396 2397int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2398 void *data, struct drm_file *file_priv) 2399{ 2400 struct drm_clip_rect __user *clips_ptr; 2401 struct drm_clip_rect *clips = NULL; 2402 struct drm_mode_fb_dirty_cmd *r = data; 2403 struct drm_mode_object *obj; 2404 struct drm_framebuffer *fb; 2405 unsigned flags; 2406 int num_clips; 2407 int ret = 0; 2408 2409 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2410 return -EINVAL; 2411 2412 mutex_lock(&dev->mode_config.mutex); 2413 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); 2414 if (!obj) { 2415 ret = -EINVAL; 2416 goto out_err1; 2417 } 2418 fb = obj_to_fb(obj); 2419 2420 num_clips = r->num_clips; 2421 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2422 2423 if (!num_clips != !clips_ptr) { 2424 ret = -EINVAL; 2425 goto out_err1; 2426 } 2427 2428 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2429 2430 /* If userspace annotates copy, clips must come in pairs */ 2431 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2432 ret = -EINVAL; 2433 goto out_err1; 2434 } 2435 2436 if (num_clips && clips_ptr) { 2437 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2438 ret = -EINVAL; 2439 goto out_err1; 2440 } 2441 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2442 if (!clips) { 2443 ret = -ENOMEM; 2444 goto out_err1; 2445 } 2446 2447 ret = copy_from_user(clips, clips_ptr, 2448 num_clips * sizeof(*clips)); 2449 if (ret) { 2450 ret = -EFAULT; 2451 goto out_err2; 2452 } 2453 } 2454 2455 if (fb->funcs->dirty) { 2456 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2457 clips, num_clips); 2458 } else { 2459 ret = -ENOSYS; 2460 goto out_err2; 2461 } 2462 2463out_err2: 2464 kfree(clips); 2465out_err1: 2466 mutex_unlock(&dev->mode_config.mutex); 2467 return ret; 2468} 2469 2470 2471/** 2472 * drm_fb_release - remove and free the FBs on this file 2473 * @filp: file * from the ioctl 2474 * 2475 * LOCKING: 2476 * Takes mode config lock. 2477 * 2478 * Destroy all the FBs associated with @filp. 2479 * 2480 * Called by the user via ioctl. 2481 * 2482 * RETURNS: 2483 * Zero on success, errno on failure. 2484 */ 2485void drm_fb_release(struct drm_file *priv) 2486{ 2487 struct drm_device *dev = priv->minor->dev; 2488 struct drm_framebuffer *fb, *tfb; 2489 2490 mutex_lock(&dev->mode_config.mutex); 2491 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2492 list_del(&fb->filp_head); 2493 fb->funcs->destroy(fb); 2494 } 2495 mutex_unlock(&dev->mode_config.mutex); 2496} 2497 2498/** 2499 * drm_mode_attachmode - add a mode to the user mode list 2500 * @dev: DRM device 2501 * @connector: connector to add the mode to 2502 * @mode: mode to add 2503 * 2504 * Add @mode to @connector's user mode list. 2505 */ 2506static void drm_mode_attachmode(struct drm_device *dev, 2507 struct drm_connector *connector, 2508 struct drm_display_mode *mode) 2509{ 2510 list_add_tail(&mode->head, &connector->user_modes); 2511} 2512 2513int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, 2514 const struct drm_display_mode *mode) 2515{ 2516 struct drm_connector *connector; 2517 int ret = 0; 2518 struct drm_display_mode *dup_mode, *next; 2519 LIST_HEAD(list); 2520 2521 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2522 if (!connector->encoder) 2523 continue; 2524 if (connector->encoder->crtc == crtc) { 2525 dup_mode = drm_mode_duplicate(dev, mode); 2526 if (!dup_mode) { 2527 ret = -ENOMEM; 2528 goto out; 2529 } 2530 list_add_tail(&dup_mode->head, &list); 2531 } 2532 } 2533 2534 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2535 if (!connector->encoder) 2536 continue; 2537 if (connector->encoder->crtc == crtc) 2538 list_move_tail(list.next, &connector->user_modes); 2539 } 2540 2541 WARN_ON(!list_empty(&list)); 2542 2543 out: 2544 list_for_each_entry_safe(dup_mode, next, &list, head) 2545 drm_mode_destroy(dev, dup_mode); 2546 2547 return ret; 2548} 2549EXPORT_SYMBOL(drm_mode_attachmode_crtc); 2550 2551static int drm_mode_detachmode(struct drm_device *dev, 2552 struct drm_connector *connector, 2553 struct drm_display_mode *mode) 2554{ 2555 int found = 0; 2556 int ret = 0; 2557 struct drm_display_mode *match_mode, *t; 2558 2559 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) { 2560 if (drm_mode_equal(match_mode, mode)) { 2561 list_del(&match_mode->head); 2562 drm_mode_destroy(dev, match_mode); 2563 found = 1; 2564 break; 2565 } 2566 } 2567 2568 if (!found) 2569 ret = -EINVAL; 2570 2571 return ret; 2572} 2573 2574int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode) 2575{ 2576 struct drm_connector *connector; 2577 2578 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2579 drm_mode_detachmode(dev, connector, mode); 2580 } 2581 return 0; 2582} 2583EXPORT_SYMBOL(drm_mode_detachmode_crtc); 2584 2585/** 2586 * drm_fb_attachmode - Attach a user mode to an connector 2587 * @inode: inode from the ioctl 2588 * @filp: file * from the ioctl 2589 * @cmd: cmd from ioctl 2590 * @arg: arg from ioctl 2591 * 2592 * This attaches a user specified mode to an connector. 2593 * Called by the user via ioctl. 2594 * 2595 * RETURNS: 2596 * Zero on success, errno on failure. 2597 */ 2598int drm_mode_attachmode_ioctl(struct drm_device *dev, 2599 void *data, struct drm_file *file_priv) 2600{ 2601 struct drm_mode_mode_cmd *mode_cmd = data; 2602 struct drm_connector *connector; 2603 struct drm_display_mode *mode; 2604 struct drm_mode_object *obj; 2605 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2606 int ret = 0; 2607 2608 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2609 return -EINVAL; 2610 2611 mutex_lock(&dev->mode_config.mutex); 2612 2613 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2614 if (!obj) { 2615 ret = -EINVAL; 2616 goto out; 2617 } 2618 connector = obj_to_connector(obj); 2619 2620 mode = drm_mode_create(dev); 2621 if (!mode) { 2622 ret = -ENOMEM; 2623 goto out; 2624 } 2625 2626 ret = drm_crtc_convert_umode(mode, umode); 2627 if (ret) { 2628 DRM_DEBUG_KMS("Invalid mode\n"); 2629 drm_mode_destroy(dev, mode); 2630 goto out; 2631 } 2632 2633 drm_mode_attachmode(dev, connector, mode); 2634out: 2635 mutex_unlock(&dev->mode_config.mutex); 2636 return ret; 2637} 2638 2639 2640/** 2641 * drm_fb_detachmode - Detach a user specified mode from an connector 2642 * @inode: inode from the ioctl 2643 * @filp: file * from the ioctl 2644 * @cmd: cmd from ioctl 2645 * @arg: arg from ioctl 2646 * 2647 * Called by the user via ioctl. 2648 * 2649 * RETURNS: 2650 * Zero on success, errno on failure. 2651 */ 2652int drm_mode_detachmode_ioctl(struct drm_device *dev, 2653 void *data, struct drm_file *file_priv) 2654{ 2655 struct drm_mode_object *obj; 2656 struct drm_mode_mode_cmd *mode_cmd = data; 2657 struct drm_connector *connector; 2658 struct drm_display_mode mode; 2659 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2660 int ret = 0; 2661 2662 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2663 return -EINVAL; 2664 2665 mutex_lock(&dev->mode_config.mutex); 2666 2667 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2668 if (!obj) { 2669 ret = -EINVAL; 2670 goto out; 2671 } 2672 connector = obj_to_connector(obj); 2673 2674 ret = drm_crtc_convert_umode(&mode, umode); 2675 if (ret) { 2676 DRM_DEBUG_KMS("Invalid mode\n"); 2677 goto out; 2678 } 2679 2680 ret = drm_mode_detachmode(dev, connector, &mode); 2681out: 2682 mutex_unlock(&dev->mode_config.mutex); 2683 return ret; 2684} 2685 2686struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2687 const char *name, int num_values) 2688{ 2689 struct drm_property *property = NULL; 2690 int ret; 2691 2692 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2693 if (!property) 2694 return NULL; 2695 2696 if (num_values) { 2697 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2698 if (!property->values) 2699 goto fail; 2700 } 2701 2702 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2703 if (ret) 2704 goto fail; 2705 2706 property->flags = flags; 2707 property->num_values = num_values; 2708 INIT_LIST_HEAD(&property->enum_blob_list); 2709 2710 if (name) { 2711 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2712 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2713 } 2714 2715 list_add_tail(&property->head, &dev->mode_config.property_list); 2716 return property; 2717fail: 2718 kfree(property->values); 2719 kfree(property); 2720 return NULL; 2721} 2722EXPORT_SYMBOL(drm_property_create); 2723 2724struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2725 const char *name, 2726 const struct drm_prop_enum_list *props, 2727 int num_values) 2728{ 2729 struct drm_property *property; 2730 int i, ret; 2731 2732 flags |= DRM_MODE_PROP_ENUM; 2733 2734 property = drm_property_create(dev, flags, name, num_values); 2735 if (!property) 2736 return NULL; 2737 2738 for (i = 0; i < num_values; i++) { 2739 ret = drm_property_add_enum(property, i, 2740 props[i].type, 2741 props[i].name); 2742 if (ret) { 2743 drm_property_destroy(dev, property); 2744 return NULL; 2745 } 2746 } 2747 2748 return property; 2749} 2750EXPORT_SYMBOL(drm_property_create_enum); 2751 2752struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2753 const char *name, 2754 uint64_t min, uint64_t max) 2755{ 2756 struct drm_property *property; 2757 2758 flags |= DRM_MODE_PROP_RANGE; 2759 2760 property = drm_property_create(dev, flags, name, 2); 2761 if (!property) 2762 return NULL; 2763 2764 property->values[0] = min; 2765 property->values[1] = max; 2766 2767 return property; 2768} 2769EXPORT_SYMBOL(drm_property_create_range); 2770 2771int drm_property_add_enum(struct drm_property *property, int index, 2772 uint64_t value, const char *name) 2773{ 2774 struct drm_property_enum *prop_enum; 2775 2776 if (!(property->flags & DRM_MODE_PROP_ENUM)) 2777 return -EINVAL; 2778 2779 if (!list_empty(&property->enum_blob_list)) { 2780 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2781 if (prop_enum->value == value) { 2782 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2783 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2784 return 0; 2785 } 2786 } 2787 } 2788 2789 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2790 if (!prop_enum) 2791 return -ENOMEM; 2792 2793 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2794 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2795 prop_enum->value = value; 2796 2797 property->values[index] = value; 2798 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2799 return 0; 2800} 2801EXPORT_SYMBOL(drm_property_add_enum); 2802 2803void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2804{ 2805 struct drm_property_enum *prop_enum, *pt; 2806 2807 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2808 list_del(&prop_enum->head); 2809 kfree(prop_enum); 2810 } 2811 2812 if (property->num_values) 2813 kfree(property->values); 2814 drm_mode_object_put(dev, &property->base); 2815 list_del(&property->head); 2816 kfree(property); 2817} 2818EXPORT_SYMBOL(drm_property_destroy); 2819 2820int drm_connector_attach_property(struct drm_connector *connector, 2821 struct drm_property *property, uint64_t init_val) 2822{ 2823 int i; 2824 2825 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2826 if (connector->property_ids[i] == 0) { 2827 connector->property_ids[i] = property->base.id; 2828 connector->property_values[i] = init_val; 2829 break; 2830 } 2831 } 2832 2833 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2834 return -EINVAL; 2835 return 0; 2836} 2837EXPORT_SYMBOL(drm_connector_attach_property); 2838 2839int drm_connector_property_set_value(struct drm_connector *connector, 2840 struct drm_property *property, uint64_t value) 2841{ 2842 int i; 2843 2844 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2845 if (connector->property_ids[i] == property->base.id) { 2846 connector->property_values[i] = value; 2847 break; 2848 } 2849 } 2850 2851 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2852 return -EINVAL; 2853 return 0; 2854} 2855EXPORT_SYMBOL(drm_connector_property_set_value); 2856 2857int drm_connector_property_get_value(struct drm_connector *connector, 2858 struct drm_property *property, uint64_t *val) 2859{ 2860 int i; 2861 2862 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 2863 if (connector->property_ids[i] == property->base.id) { 2864 *val = connector->property_values[i]; 2865 break; 2866 } 2867 } 2868 2869 if (i == DRM_CONNECTOR_MAX_PROPERTY) 2870 return -EINVAL; 2871 return 0; 2872} 2873EXPORT_SYMBOL(drm_connector_property_get_value); 2874 2875int drm_mode_getproperty_ioctl(struct drm_device *dev, 2876 void *data, struct drm_file *file_priv) 2877{ 2878 struct drm_mode_object *obj; 2879 struct drm_mode_get_property *out_resp = data; 2880 struct drm_property *property; 2881 int enum_count = 0; 2882 int blob_count = 0; 2883 int value_count = 0; 2884 int ret = 0, i; 2885 int copied; 2886 struct drm_property_enum *prop_enum; 2887 struct drm_mode_property_enum __user *enum_ptr; 2888 struct drm_property_blob *prop_blob; 2889 uint32_t __user *blob_id_ptr; 2890 uint64_t __user *values_ptr; 2891 uint32_t __user *blob_length_ptr; 2892 2893 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2894 return -EINVAL; 2895 2896 mutex_lock(&dev->mode_config.mutex); 2897 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 2898 if (!obj) { 2899 ret = -EINVAL; 2900 goto done; 2901 } 2902 property = obj_to_property(obj); 2903 2904 if (property->flags & DRM_MODE_PROP_ENUM) { 2905 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 2906 enum_count++; 2907 } else if (property->flags & DRM_MODE_PROP_BLOB) { 2908 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 2909 blob_count++; 2910 } 2911 2912 value_count = property->num_values; 2913 2914 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 2915 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 2916 out_resp->flags = property->flags; 2917 2918 if ((out_resp->count_values >= value_count) && value_count) { 2919 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 2920 for (i = 0; i < value_count; i++) { 2921 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 2922 ret = -EFAULT; 2923 goto done; 2924 } 2925 } 2926 } 2927 out_resp->count_values = value_count; 2928 2929 if (property->flags & DRM_MODE_PROP_ENUM) { 2930 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 2931 copied = 0; 2932 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 2933 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2934 2935 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 2936 ret = -EFAULT; 2937 goto done; 2938 } 2939 2940 if (copy_to_user(&enum_ptr[copied].name, 2941 &prop_enum->name, DRM_PROP_NAME_LEN)) { 2942 ret = -EFAULT; 2943 goto done; 2944 } 2945 copied++; 2946 } 2947 } 2948 out_resp->count_enum_blobs = enum_count; 2949 } 2950 2951 if (property->flags & DRM_MODE_PROP_BLOB) { 2952 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 2953 copied = 0; 2954 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 2955 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 2956 2957 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 2958 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 2959 ret = -EFAULT; 2960 goto done; 2961 } 2962 2963 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 2964 ret = -EFAULT; 2965 goto done; 2966 } 2967 2968 copied++; 2969 } 2970 } 2971 out_resp->count_enum_blobs = blob_count; 2972 } 2973done: 2974 mutex_unlock(&dev->mode_config.mutex); 2975 return ret; 2976} 2977 2978static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 2979 void *data) 2980{ 2981 struct drm_property_blob *blob; 2982 int ret; 2983 2984 if (!length || !data) 2985 return NULL; 2986 2987 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 2988 if (!blob) 2989 return NULL; 2990 2991 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 2992 if (ret) { 2993 kfree(blob); 2994 return NULL; 2995 } 2996 2997 blob->length = length; 2998 2999 memcpy(blob->data, data, length); 3000 3001 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3002 return blob; 3003} 3004 3005static void drm_property_destroy_blob(struct drm_device *dev, 3006 struct drm_property_blob *blob) 3007{ 3008 drm_mode_object_put(dev, &blob->base); 3009 list_del(&blob->head); 3010 kfree(blob); 3011} 3012 3013int drm_mode_getblob_ioctl(struct drm_device *dev, 3014 void *data, struct drm_file *file_priv) 3015{ 3016 struct drm_mode_object *obj; 3017 struct drm_mode_get_blob *out_resp = data; 3018 struct drm_property_blob *blob; 3019 int ret = 0; 3020 void __user *blob_ptr; 3021 3022 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3023 return -EINVAL; 3024 3025 mutex_lock(&dev->mode_config.mutex); 3026 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3027 if (!obj) { 3028 ret = -EINVAL; 3029 goto done; 3030 } 3031 blob = obj_to_blob(obj); 3032 3033 if (out_resp->length == blob->length) { 3034 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3035 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3036 ret = -EFAULT; 3037 goto done; 3038 } 3039 } 3040 out_resp->length = blob->length; 3041 3042done: 3043 mutex_unlock(&dev->mode_config.mutex); 3044 return ret; 3045} 3046 3047int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3048 struct edid *edid) 3049{ 3050 struct drm_device *dev = connector->dev; 3051 int ret = 0, size; 3052 3053 if (connector->edid_blob_ptr) 3054 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3055 3056 /* Delete edid, when there is none. */ 3057 if (!edid) { 3058 connector->edid_blob_ptr = NULL; 3059 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0); 3060 return ret; 3061 } 3062 3063 size = EDID_LENGTH * (1 + edid->extensions); 3064 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3065 size, edid); 3066 3067 ret = drm_connector_property_set_value(connector, 3068 dev->mode_config.edid_property, 3069 connector->edid_blob_ptr->base.id); 3070 3071 return ret; 3072} 3073EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3074 3075int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3076 void *data, struct drm_file *file_priv) 3077{ 3078 struct drm_mode_connector_set_property *out_resp = data; 3079 struct drm_mode_object *obj; 3080 struct drm_property *property; 3081 struct drm_connector *connector; 3082 int ret = -EINVAL; 3083 int i; 3084 3085 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3086 return -EINVAL; 3087 3088 mutex_lock(&dev->mode_config.mutex); 3089 3090 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR); 3091 if (!obj) { 3092 goto out; 3093 } 3094 connector = obj_to_connector(obj); 3095 3096 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { 3097 if (connector->property_ids[i] == out_resp->prop_id) 3098 break; 3099 } 3100 3101 if (i == DRM_CONNECTOR_MAX_PROPERTY) { 3102 goto out; 3103 } 3104 3105 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 3106 if (!obj) { 3107 goto out; 3108 } 3109 property = obj_to_property(obj); 3110 3111 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3112 goto out; 3113 3114 if (property->flags & DRM_MODE_PROP_RANGE) { 3115 if (out_resp->value < property->values[0]) 3116 goto out; 3117 3118 if (out_resp->value > property->values[1]) 3119 goto out; 3120 } else { 3121 int found = 0; 3122 for (i = 0; i < property->num_values; i++) { 3123 if (property->values[i] == out_resp->value) { 3124 found = 1; 3125 break; 3126 } 3127 } 3128 if (!found) { 3129 goto out; 3130 } 3131 } 3132 3133 /* Do DPMS ourselves */ 3134 if (property == connector->dev->mode_config.dpms_property) { 3135 if (connector->funcs->dpms) 3136 (*connector->funcs->dpms)(connector, (int) out_resp->value); 3137 ret = 0; 3138 } else if (connector->funcs->set_property) 3139 ret = connector->funcs->set_property(connector, property, out_resp->value); 3140 3141 /* store the property value if successful */ 3142 if (!ret) 3143 drm_connector_property_set_value(connector, property, out_resp->value); 3144out: 3145 mutex_unlock(&dev->mode_config.mutex); 3146 return ret; 3147} 3148 3149int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3150 struct drm_encoder *encoder) 3151{ 3152 int i; 3153 3154 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3155 if (connector->encoder_ids[i] == 0) { 3156 connector->encoder_ids[i] = encoder->base.id; 3157 return 0; 3158 } 3159 } 3160 return -ENOMEM; 3161} 3162EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3163 3164void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3165 struct drm_encoder *encoder) 3166{ 3167 int i; 3168 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3169 if (connector->encoder_ids[i] == encoder->base.id) { 3170 connector->encoder_ids[i] = 0; 3171 if (connector->encoder == encoder) 3172 connector->encoder = NULL; 3173 break; 3174 } 3175 } 3176} 3177EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3178 3179int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3180 int gamma_size) 3181{ 3182 crtc->gamma_size = gamma_size; 3183 3184 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3185 if (!crtc->gamma_store) { 3186 crtc->gamma_size = 0; 3187 return -ENOMEM; 3188 } 3189 3190 return 0; 3191} 3192EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3193 3194int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3195 void *data, struct drm_file *file_priv) 3196{ 3197 struct drm_mode_crtc_lut *crtc_lut = data; 3198 struct drm_mode_object *obj; 3199 struct drm_crtc *crtc; 3200 void *r_base, *g_base, *b_base; 3201 int size; 3202 int ret = 0; 3203 3204 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3205 return -EINVAL; 3206 3207 mutex_lock(&dev->mode_config.mutex); 3208 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3209 if (!obj) { 3210 ret = -EINVAL; 3211 goto out; 3212 } 3213 crtc = obj_to_crtc(obj); 3214 3215 /* memcpy into gamma store */ 3216 if (crtc_lut->gamma_size != crtc->gamma_size) { 3217 ret = -EINVAL; 3218 goto out; 3219 } 3220 3221 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3222 r_base = crtc->gamma_store; 3223 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3224 ret = -EFAULT; 3225 goto out; 3226 } 3227 3228 g_base = r_base + size; 3229 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3230 ret = -EFAULT; 3231 goto out; 3232 } 3233 3234 b_base = g_base + size; 3235 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3236 ret = -EFAULT; 3237 goto out; 3238 } 3239 3240 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3241 3242out: 3243 mutex_unlock(&dev->mode_config.mutex); 3244 return ret; 3245 3246} 3247 3248int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3249 void *data, struct drm_file *file_priv) 3250{ 3251 struct drm_mode_crtc_lut *crtc_lut = data; 3252 struct drm_mode_object *obj; 3253 struct drm_crtc *crtc; 3254 void *r_base, *g_base, *b_base; 3255 int size; 3256 int ret = 0; 3257 3258 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3259 return -EINVAL; 3260 3261 mutex_lock(&dev->mode_config.mutex); 3262 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3263 if (!obj) { 3264 ret = -EINVAL; 3265 goto out; 3266 } 3267 crtc = obj_to_crtc(obj); 3268 3269 /* memcpy into gamma store */ 3270 if (crtc_lut->gamma_size != crtc->gamma_size) { 3271 ret = -EINVAL; 3272 goto out; 3273 } 3274 3275 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3276 r_base = crtc->gamma_store; 3277 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3278 ret = -EFAULT; 3279 goto out; 3280 } 3281 3282 g_base = r_base + size; 3283 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3284 ret = -EFAULT; 3285 goto out; 3286 } 3287 3288 b_base = g_base + size; 3289 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3290 ret = -EFAULT; 3291 goto out; 3292 } 3293out: 3294 mutex_unlock(&dev->mode_config.mutex); 3295 return ret; 3296} 3297 3298int drm_mode_page_flip_ioctl(struct drm_device *dev, 3299 void *data, struct drm_file *file_priv) 3300{ 3301 struct drm_mode_crtc_page_flip *page_flip = data; 3302 struct drm_mode_object *obj; 3303 struct drm_crtc *crtc; 3304 struct drm_framebuffer *fb; 3305 struct drm_pending_vblank_event *e = NULL; 3306 unsigned long flags; 3307 int ret = -EINVAL; 3308 3309 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3310 page_flip->reserved != 0) 3311 return -EINVAL; 3312 3313 mutex_lock(&dev->mode_config.mutex); 3314 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3315 if (!obj) 3316 goto out; 3317 crtc = obj_to_crtc(obj); 3318 3319 if (crtc->fb == NULL) { 3320 /* The framebuffer is currently unbound, presumably 3321 * due to a hotplug event, that userspace has not 3322 * yet discovered. 3323 */ 3324 ret = -EBUSY; 3325 goto out; 3326 } 3327 3328 if (crtc->funcs->page_flip == NULL) 3329 goto out; 3330 3331 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB); 3332 if (!obj) 3333 goto out; 3334 fb = obj_to_fb(obj); 3335 3336 if (crtc->mode.hdisplay > fb->width || 3337 crtc->mode.vdisplay > fb->height || 3338 crtc->x > fb->width - crtc->mode.hdisplay || 3339 crtc->y > fb->height - crtc->mode.vdisplay) { 3340 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d.\n", 3341 fb->width, fb->height, 3342 crtc->mode.hdisplay, crtc->mode.vdisplay, 3343 crtc->x, crtc->y); 3344 ret = -ENOSPC; 3345 goto out; 3346 } 3347 3348 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3349 ret = -ENOMEM; 3350 spin_lock_irqsave(&dev->event_lock, flags); 3351 if (file_priv->event_space < sizeof e->event) { 3352 spin_unlock_irqrestore(&dev->event_lock, flags); 3353 goto out; 3354 } 3355 file_priv->event_space -= sizeof e->event; 3356 spin_unlock_irqrestore(&dev->event_lock, flags); 3357 3358 e = kzalloc(sizeof *e, GFP_KERNEL); 3359 if (e == NULL) { 3360 spin_lock_irqsave(&dev->event_lock, flags); 3361 file_priv->event_space += sizeof e->event; 3362 spin_unlock_irqrestore(&dev->event_lock, flags); 3363 goto out; 3364 } 3365 3366 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3367 e->event.base.length = sizeof e->event; 3368 e->event.user_data = page_flip->user_data; 3369 e->base.event = &e->event.base; 3370 e->base.file_priv = file_priv; 3371 e->base.destroy = 3372 (void (*) (struct drm_pending_event *)) kfree; 3373 } 3374 3375 ret = crtc->funcs->page_flip(crtc, fb, e); 3376 if (ret) { 3377 spin_lock_irqsave(&dev->event_lock, flags); 3378 file_priv->event_space += sizeof e->event; 3379 spin_unlock_irqrestore(&dev->event_lock, flags); 3380 kfree(e); 3381 } 3382 3383out: 3384 mutex_unlock(&dev->mode_config.mutex); 3385 return ret; 3386} 3387 3388void drm_mode_config_reset(struct drm_device *dev) 3389{ 3390 struct drm_crtc *crtc; 3391 struct drm_encoder *encoder; 3392 struct drm_connector *connector; 3393 3394 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3395 if (crtc->funcs->reset) 3396 crtc->funcs->reset(crtc); 3397 3398 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3399 if (encoder->funcs->reset) 3400 encoder->funcs->reset(encoder); 3401 3402 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 3403 if (connector->funcs->reset) 3404 connector->funcs->reset(connector); 3405} 3406EXPORT_SYMBOL(drm_mode_config_reset); 3407 3408int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3409 void *data, struct drm_file *file_priv) 3410{ 3411 struct drm_mode_create_dumb *args = data; 3412 3413 if (!dev->driver->dumb_create) 3414 return -ENOSYS; 3415 return dev->driver->dumb_create(file_priv, dev, args); 3416} 3417 3418int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3419 void *data, struct drm_file *file_priv) 3420{ 3421 struct drm_mode_map_dumb *args = data; 3422 3423 /* call driver ioctl to get mmap offset */ 3424 if (!dev->driver->dumb_map_offset) 3425 return -ENOSYS; 3426 3427 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3428} 3429 3430int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3431 void *data, struct drm_file *file_priv) 3432{ 3433 struct drm_mode_destroy_dumb *args = data; 3434 3435 if (!dev->driver->dumb_destroy) 3436 return -ENOSYS; 3437 3438 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3439} 3440 3441/* 3442 * Just need to support RGB formats here for compat with code that doesn't 3443 * use pixel formats directly yet. 3444 */ 3445void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3446 int *bpp) 3447{ 3448 switch (format) { 3449 case DRM_FORMAT_RGB332: 3450 case DRM_FORMAT_BGR233: 3451 *depth = 8; 3452 *bpp = 8; 3453 break; 3454 case DRM_FORMAT_XRGB1555: 3455 case DRM_FORMAT_XBGR1555: 3456 case DRM_FORMAT_RGBX5551: 3457 case DRM_FORMAT_BGRX5551: 3458 case DRM_FORMAT_ARGB1555: 3459 case DRM_FORMAT_ABGR1555: 3460 case DRM_FORMAT_RGBA5551: 3461 case DRM_FORMAT_BGRA5551: 3462 *depth = 15; 3463 *bpp = 16; 3464 break; 3465 case DRM_FORMAT_RGB565: 3466 case DRM_FORMAT_BGR565: 3467 *depth = 16; 3468 *bpp = 16; 3469 break; 3470 case DRM_FORMAT_RGB888: 3471 case DRM_FORMAT_BGR888: 3472 *depth = 24; 3473 *bpp = 24; 3474 break; 3475 case DRM_FORMAT_XRGB8888: 3476 case DRM_FORMAT_XBGR8888: 3477 case DRM_FORMAT_RGBX8888: 3478 case DRM_FORMAT_BGRX8888: 3479 *depth = 24; 3480 *bpp = 32; 3481 break; 3482 case DRM_FORMAT_XRGB2101010: 3483 case DRM_FORMAT_XBGR2101010: 3484 case DRM_FORMAT_RGBX1010102: 3485 case DRM_FORMAT_BGRX1010102: 3486 case DRM_FORMAT_ARGB2101010: 3487 case DRM_FORMAT_ABGR2101010: 3488 case DRM_FORMAT_RGBA1010102: 3489 case DRM_FORMAT_BGRA1010102: 3490 *depth = 30; 3491 *bpp = 32; 3492 break; 3493 case DRM_FORMAT_ARGB8888: 3494 case DRM_FORMAT_ABGR8888: 3495 case DRM_FORMAT_RGBA8888: 3496 case DRM_FORMAT_BGRA8888: 3497 *depth = 32; 3498 *bpp = 32; 3499 break; 3500 default: 3501 DRM_DEBUG_KMS("unsupported pixel format\n"); 3502 *depth = 0; 3503 *bpp = 0; 3504 break; 3505 } 3506} 3507EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3508 3509/** 3510 * drm_format_num_planes - get the number of planes for format 3511 * @format: pixel format (DRM_FORMAT_*) 3512 * 3513 * RETURNS: 3514 * The number of planes used by the specified pixel format. 3515 */ 3516int drm_format_num_planes(uint32_t format) 3517{ 3518 switch (format) { 3519 case DRM_FORMAT_YUV410: 3520 case DRM_FORMAT_YVU410: 3521 case DRM_FORMAT_YUV411: 3522 case DRM_FORMAT_YVU411: 3523 case DRM_FORMAT_YUV420: 3524 case DRM_FORMAT_YVU420: 3525 case DRM_FORMAT_YUV422: 3526 case DRM_FORMAT_YVU422: 3527 case DRM_FORMAT_YUV444: 3528 case DRM_FORMAT_YVU444: 3529 return 3; 3530 case DRM_FORMAT_NV12: 3531 case DRM_FORMAT_NV21: 3532 case DRM_FORMAT_NV16: 3533 case DRM_FORMAT_NV61: 3534 return 2; 3535 default: 3536 return 1; 3537 } 3538} 3539EXPORT_SYMBOL(drm_format_num_planes); 3540 3541/** 3542 * drm_format_plane_cpp - determine the bytes per pixel value 3543 * @format: pixel format (DRM_FORMAT_*) 3544 * @plane: plane index 3545 * 3546 * RETURNS: 3547 * The bytes per pixel value for the specified plane. 3548 */ 3549int drm_format_plane_cpp(uint32_t format, int plane) 3550{ 3551 unsigned int depth; 3552 int bpp; 3553 3554 if (plane >= drm_format_num_planes(format)) 3555 return 0; 3556 3557 switch (format) { 3558 case DRM_FORMAT_YUYV: 3559 case DRM_FORMAT_YVYU: 3560 case DRM_FORMAT_UYVY: 3561 case DRM_FORMAT_VYUY: 3562 return 2; 3563 case DRM_FORMAT_NV12: 3564 case DRM_FORMAT_NV21: 3565 case DRM_FORMAT_NV16: 3566 case DRM_FORMAT_NV61: 3567 return plane ? 2 : 1; 3568 case DRM_FORMAT_YUV410: 3569 case DRM_FORMAT_YVU410: 3570 case DRM_FORMAT_YUV411: 3571 case DRM_FORMAT_YVU411: 3572 case DRM_FORMAT_YUV420: 3573 case DRM_FORMAT_YVU420: 3574 case DRM_FORMAT_YUV422: 3575 case DRM_FORMAT_YVU422: 3576 case DRM_FORMAT_YUV444: 3577 case DRM_FORMAT_YVU444: 3578 return 1; 3579 default: 3580 drm_fb_get_bpp_depth(format, &depth, &bpp); 3581 return bpp >> 3; 3582 } 3583} 3584EXPORT_SYMBOL(drm_format_plane_cpp); 3585 3586/** 3587 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3588 * @format: pixel format (DRM_FORMAT_*) 3589 * 3590 * RETURNS: 3591 * The horizontal chroma subsampling factor for the 3592 * specified pixel format. 3593 */ 3594int drm_format_horz_chroma_subsampling(uint32_t format) 3595{ 3596 switch (format) { 3597 case DRM_FORMAT_YUV411: 3598 case DRM_FORMAT_YVU411: 3599 case DRM_FORMAT_YUV410: 3600 case DRM_FORMAT_YVU410: 3601 return 4; 3602 case DRM_FORMAT_YUYV: 3603 case DRM_FORMAT_YVYU: 3604 case DRM_FORMAT_UYVY: 3605 case DRM_FORMAT_VYUY: 3606 case DRM_FORMAT_NV12: 3607 case DRM_FORMAT_NV21: 3608 case DRM_FORMAT_NV16: 3609 case DRM_FORMAT_NV61: 3610 case DRM_FORMAT_YUV422: 3611 case DRM_FORMAT_YVU422: 3612 case DRM_FORMAT_YUV420: 3613 case DRM_FORMAT_YVU420: 3614 return 2; 3615 default: 3616 return 1; 3617 } 3618} 3619EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3620 3621/** 3622 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3623 * @format: pixel format (DRM_FORMAT_*) 3624 * 3625 * RETURNS: 3626 * The vertical chroma subsampling factor for the 3627 * specified pixel format. 3628 */ 3629int drm_format_vert_chroma_subsampling(uint32_t format) 3630{ 3631 switch (format) { 3632 case DRM_FORMAT_YUV410: 3633 case DRM_FORMAT_YVU410: 3634 return 4; 3635 case DRM_FORMAT_YUV420: 3636 case DRM_FORMAT_YVU420: 3637 case DRM_FORMAT_NV12: 3638 case DRM_FORMAT_NV21: 3639 return 2; 3640 default: 3641 return 1; 3642 } 3643} 3644EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3645