1 /* 2 * Copyright (c) 2016 Intel Corporation 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 23 #ifndef __DRM_CONNECTOR_H__ 24 #define __DRM_CONNECTOR_H__ 25 26 #include <linux/list.h> 27 #include <linux/ctype.h> 28 #include <drm/drm_mode_object.h> 29 30 #include <uapi/drm/drm_mode.h> 31 32 struct drm_device; 33 34 struct drm_connector_helper_funcs; 35 struct drm_device; 36 struct drm_crtc; 37 struct drm_encoder; 38 struct drm_property; 39 struct drm_property_blob; 40 struct drm_printer; 41 struct edid; 42 43 enum drm_connector_force { 44 DRM_FORCE_UNSPECIFIED, 45 DRM_FORCE_OFF, 46 DRM_FORCE_ON, /* force on analog part normally */ 47 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 48 }; 49 50 /** 51 * enum drm_connector_status - status for a &drm_connector 52 * 53 * This enum is used to track the connector status. There are no separate 54 * #defines for the uapi! 55 */ 56 enum drm_connector_status { 57 /** 58 * @connector_status_connected: The connector is definitely connected to 59 * a sink device, and can be enabled. 60 */ 61 connector_status_connected = 1, 62 /** 63 * @connector_status_disconnected: The connector isn't connected to a 64 * sink device which can be autodetect. For digital outputs like DP or 65 * HDMI (which can be realiable probed) this means there's really 66 * nothing there. It is driver-dependent whether a connector with this 67 * status can be lit up or not. 68 */ 69 connector_status_disconnected = 2, 70 /** 71 * @connector_status_unknown: The connector's status could not be 72 * reliably detected. This happens when probing would either cause 73 * flicker (like load-detection when the connector is in use), or when a 74 * hardware resource isn't available (like when load-detection needs a 75 * free CRTC). It should be possible to light up the connector with one 76 * of the listed fallback modes. For default configuration userspace 77 * should only try to light up connectors with unknown status when 78 * there's not connector with @connector_status_connected. 79 */ 80 connector_status_unknown = 3, 81 }; 82 83 enum subpixel_order { 84 SubPixelUnknown = 0, 85 SubPixelHorizontalRGB, 86 SubPixelHorizontalBGR, 87 SubPixelVerticalRGB, 88 SubPixelVerticalBGR, 89 SubPixelNone, 90 }; 91 92 /** 93 * struct drm_display_info - runtime data about the connected sink 94 * 95 * Describes a given display (e.g. CRT or flat panel) and its limitations. For 96 * fixed display sinks like built-in panels there's not much difference between 97 * this and struct &drm_connector. But for sinks with a real cable this 98 * structure is meant to describe all the things at the other end of the cable. 99 * 100 * For sinks which provide an EDID this can be filled out by calling 101 * drm_add_edid_modes(). 102 */ 103 struct drm_display_info { 104 /** 105 * @name: Name of the display. 106 */ 107 char name[DRM_DISPLAY_INFO_LEN]; 108 109 /** 110 * @width_mm: Physical width in mm. 111 */ 112 unsigned int width_mm; 113 /** 114 * @height_mm: Physical height in mm. 115 */ 116 unsigned int height_mm; 117 118 /** 119 * @pixel_clock: Maximum pixel clock supported by the sink, in units of 120 * 100Hz. This mismatches the clok in &drm_display_mode (which is in 121 * kHZ), because that's what the EDID uses as base unit. 122 */ 123 unsigned int pixel_clock; 124 /** 125 * @bpc: Maximum bits per color channel. Used by HDMI and DP outputs. 126 */ 127 unsigned int bpc; 128 129 /** 130 * @subpixel_order: Subpixel order of LCD panels. 131 */ 132 enum subpixel_order subpixel_order; 133 134 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 135 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1) 136 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2) 137 138 /** 139 * @color_formats: HDMI Color formats, selects between RGB and YCrCb 140 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones 141 * as used to describe the pixel format in framebuffers, and also don't 142 * match the formats in @bus_formats which are shared with v4l. 143 */ 144 u32 color_formats; 145 146 /** 147 * @bus_formats: Pixel data format on the wire, somewhat redundant with 148 * @color_formats. Array of size @num_bus_formats encoded using 149 * MEDIA_BUS_FMT\_ defines shared with v4l and media drivers. 150 */ 151 const u32 *bus_formats; 152 /** 153 * @num_bus_formats: Size of @bus_formats array. 154 */ 155 unsigned int num_bus_formats; 156 157 #define DRM_BUS_FLAG_DE_LOW (1<<0) 158 #define DRM_BUS_FLAG_DE_HIGH (1<<1) 159 /* drive data on pos. edge */ 160 #define DRM_BUS_FLAG_PIXDATA_POSEDGE (1<<2) 161 /* drive data on neg. edge */ 162 #define DRM_BUS_FLAG_PIXDATA_NEGEDGE (1<<3) 163 164 /** 165 * @bus_flags: Additional information (like pixel signal polarity) for 166 * the pixel data on the bus, using DRM_BUS_FLAGS\_ defines. 167 */ 168 u32 bus_flags; 169 170 /** 171 * @max_tmds_clock: Maximum TMDS clock rate supported by the 172 * sink in kHz. 0 means undefined. 173 */ 174 int max_tmds_clock; 175 176 /** 177 * @dvi_dual: Dual-link DVI sink? 178 */ 179 bool dvi_dual; 180 181 /** 182 * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even 183 * more stuff redundant with @bus_formats. 184 */ 185 u8 edid_hdmi_dc_modes; 186 187 /** 188 * @cea_rev: CEA revision of the HDMI sink. 189 */ 190 u8 cea_rev; 191 }; 192 193 int drm_display_info_set_bus_formats(struct drm_display_info *info, 194 const u32 *formats, 195 unsigned int num_formats); 196 197 /** 198 * struct drm_tv_connector_state - TV connector related states 199 * @subconnector: selected subconnector 200 * @margins: left/right/top/bottom margins 201 * @mode: TV mode 202 * @brightness: brightness in percent 203 * @contrast: contrast in percent 204 * @flicker_reduction: flicker reduction in percent 205 * @overscan: overscan in percent 206 * @saturation: saturation in percent 207 * @hue: hue in percent 208 */ 209 struct drm_tv_connector_state { 210 enum drm_mode_subconnector subconnector; 211 struct { 212 unsigned int left; 213 unsigned int right; 214 unsigned int top; 215 unsigned int bottom; 216 } margins; 217 unsigned int mode; 218 unsigned int brightness; 219 unsigned int contrast; 220 unsigned int flicker_reduction; 221 unsigned int overscan; 222 unsigned int saturation; 223 unsigned int hue; 224 }; 225 226 /** 227 * struct drm_connector_state - mutable connector state 228 * @connector: backpointer to the connector 229 * @best_encoder: can be used by helpers and drivers to select the encoder 230 * @state: backpointer to global drm_atomic_state 231 * @tv: TV connector state 232 */ 233 struct drm_connector_state { 234 struct drm_connector *connector; 235 236 /** 237 * @crtc: CRTC to connect connector to, NULL if disabled. 238 * 239 * Do not change this directly, use drm_atomic_set_crtc_for_connector() 240 * instead. 241 */ 242 struct drm_crtc *crtc; 243 244 struct drm_encoder *best_encoder; 245 246 struct drm_atomic_state *state; 247 248 struct drm_tv_connector_state tv; 249 }; 250 251 /** 252 * struct drm_connector_funcs - control connectors on a given device 253 * 254 * Each CRTC may have one or more connectors attached to it. The functions 255 * below allow the core DRM code to control connectors, enumerate available modes, 256 * etc. 257 */ 258 struct drm_connector_funcs { 259 /** 260 * @dpms: 261 * 262 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS 263 * is exposed as a standard property on the connector, but diverted to 264 * this callback in the drm core. Note that atomic drivers don't 265 * implement the 4 level DPMS support on the connector any more, but 266 * instead only have an on/off "ACTIVE" property on the CRTC object. 267 * 268 * Drivers implementing atomic modeset should use 269 * drm_atomic_helper_connector_dpms() to implement this hook. 270 * 271 * RETURNS: 272 * 273 * 0 on success or a negative error code on failure. 274 */ 275 int (*dpms)(struct drm_connector *connector, int mode); 276 277 /** 278 * @reset: 279 * 280 * Reset connector hardware and software state to off. This function isn't 281 * called by the core directly, only through drm_mode_config_reset(). 282 * It's not a helper hook only for historical reasons. 283 * 284 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset 285 * atomic state using this hook. 286 */ 287 void (*reset)(struct drm_connector *connector); 288 289 /** 290 * @detect: 291 * 292 * Check to see if anything is attached to the connector. The parameter 293 * force is set to false whilst polling, true when checking the 294 * connector due to a user request. force can be used by the driver to 295 * avoid expensive, destructive operations during automated probing. 296 * 297 * This callback is optional, if not implemented the connector will be 298 * considered as always being attached. 299 * 300 * FIXME: 301 * 302 * Note that this hook is only called by the probe helper. It's not in 303 * the helper library vtable purely for historical reasons. The only DRM 304 * core entry point to probe connector state is @fill_modes. 305 * 306 * RETURNS: 307 * 308 * drm_connector_status indicating the connector's status. 309 */ 310 enum drm_connector_status (*detect)(struct drm_connector *connector, 311 bool force); 312 313 /** 314 * @force: 315 * 316 * This function is called to update internal encoder state when the 317 * connector is forced to a certain state by userspace, either through 318 * the sysfs interfaces or on the kernel cmdline. In that case the 319 * @detect callback isn't called. 320 * 321 * FIXME: 322 * 323 * Note that this hook is only called by the probe helper. It's not in 324 * the helper library vtable purely for historical reasons. The only DRM 325 * core entry point to probe connector state is @fill_modes. 326 */ 327 void (*force)(struct drm_connector *connector); 328 329 /** 330 * @fill_modes: 331 * 332 * Entry point for output detection and basic mode validation. The 333 * driver should reprobe the output if needed (e.g. when hotplug 334 * handling is unreliable), add all detected modes to connector->modes 335 * and filter out any the device can't support in any configuration. It 336 * also needs to filter out any modes wider or higher than the 337 * parameters max_width and max_height indicate. 338 * 339 * The drivers must also prune any modes no longer valid from 340 * connector->modes. Furthermore it must update connector->status and 341 * connector->edid. If no EDID has been received for this output 342 * connector->edid must be NULL. 343 * 344 * Drivers using the probe helpers should use 345 * drm_helper_probe_single_connector_modes() or 346 * drm_helper_probe_single_connector_modes_nomerge() to implement this 347 * function. 348 * 349 * RETURNS: 350 * 351 * The number of modes detected and filled into connector->modes. 352 */ 353 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 354 355 /** 356 * @set_property: 357 * 358 * This is the legacy entry point to update a property attached to the 359 * connector. 360 * 361 * Drivers implementing atomic modeset should use 362 * drm_atomic_helper_connector_set_property() to implement this hook. 363 * 364 * This callback is optional if the driver does not support any legacy 365 * driver-private properties. 366 * 367 * RETURNS: 368 * 369 * 0 on success or a negative error code on failure. 370 */ 371 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 372 uint64_t val); 373 374 /** 375 * @late_register: 376 * 377 * This optional hook can be used to register additional userspace 378 * interfaces attached to the connector, light backlight control, i2c, 379 * DP aux or similar interfaces. It is called late in the driver load 380 * sequence from drm_connector_register() when registering all the 381 * core drm connector interfaces. Everything added from this callback 382 * should be unregistered in the early_unregister callback. 383 * 384 * This is called while holding drm_connector->mutex. 385 * 386 * Returns: 387 * 388 * 0 on success, or a negative error code on failure. 389 */ 390 int (*late_register)(struct drm_connector *connector); 391 392 /** 393 * @early_unregister: 394 * 395 * This optional hook should be used to unregister the additional 396 * userspace interfaces attached to the connector from 397 * late_register(). It is called from drm_connector_unregister(), 398 * early in the driver unload sequence to disable userspace access 399 * before data structures are torndown. 400 * 401 * This is called while holding drm_connector->mutex. 402 */ 403 void (*early_unregister)(struct drm_connector *connector); 404 405 /** 406 * @destroy: 407 * 408 * Clean up connector resources. This is called at driver unload time 409 * through drm_mode_config_cleanup(). It can also be called at runtime 410 * when a connector is being hot-unplugged for drivers that support 411 * connector hotplugging (e.g. DisplayPort MST). 412 */ 413 void (*destroy)(struct drm_connector *connector); 414 415 /** 416 * @atomic_duplicate_state: 417 * 418 * Duplicate the current atomic state for this connector and return it. 419 * The core and helpers guarantee that any atomic state duplicated with 420 * this hook and still owned by the caller (i.e. not transferred to the 421 * driver by calling ->atomic_commit() from struct 422 * &drm_mode_config_funcs) will be cleaned up by calling the 423 * @atomic_destroy_state hook in this structure. 424 * 425 * Atomic drivers which don't subclass struct &drm_connector_state should use 426 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the 427 * state structure to extend it with driver-private state should use 428 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is 429 * duplicated in a consistent fashion across drivers. 430 * 431 * It is an error to call this hook before connector->state has been 432 * initialized correctly. 433 * 434 * NOTE: 435 * 436 * If the duplicate state references refcounted resources this hook must 437 * acquire a reference for each of them. The driver must release these 438 * references again in @atomic_destroy_state. 439 * 440 * RETURNS: 441 * 442 * Duplicated atomic state or NULL when the allocation failed. 443 */ 444 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 445 446 /** 447 * @atomic_destroy_state: 448 * 449 * Destroy a state duplicated with @atomic_duplicate_state and release 450 * or unreference all resources it references 451 */ 452 void (*atomic_destroy_state)(struct drm_connector *connector, 453 struct drm_connector_state *state); 454 455 /** 456 * @atomic_set_property: 457 * 458 * Decode a driver-private property value and store the decoded value 459 * into the passed-in state structure. Since the atomic core decodes all 460 * standardized properties (even for extensions beyond the core set of 461 * properties which might not be implemented by all drivers) this 462 * requires drivers to subclass the state structure. 463 * 464 * Such driver-private properties should really only be implemented for 465 * truly hardware/vendor specific state. Instead it is preferred to 466 * standardize atomic extension and decode the properties used to expose 467 * such an extension in the core. 468 * 469 * Do not call this function directly, use 470 * drm_atomic_connector_set_property() instead. 471 * 472 * This callback is optional if the driver does not support any 473 * driver-private atomic properties. 474 * 475 * NOTE: 476 * 477 * This function is called in the state assembly phase of atomic 478 * modesets, which can be aborted for any reason (including on 479 * userspace's request to just check whether a configuration would be 480 * possible). Drivers MUST NOT touch any persistent state (hardware or 481 * software) or data structures except the passed in @state parameter. 482 * 483 * Also since userspace controls in which order properties are set this 484 * function must not do any input validation (since the state update is 485 * incomplete and hence likely inconsistent). Instead any such input 486 * validation must be done in the various atomic_check callbacks. 487 * 488 * RETURNS: 489 * 490 * 0 if the property has been found, -EINVAL if the property isn't 491 * implemented by the driver (which shouldn't ever happen, the core only 492 * asks for properties attached to this connector). No other validation 493 * is allowed by the driver. The core already checks that the property 494 * value is within the range (integer, valid enum value, ...) the driver 495 * set when registering the property. 496 */ 497 int (*atomic_set_property)(struct drm_connector *connector, 498 struct drm_connector_state *state, 499 struct drm_property *property, 500 uint64_t val); 501 502 /** 503 * @atomic_get_property: 504 * 505 * Reads out the decoded driver-private property. This is used to 506 * implement the GETCONNECTOR IOCTL. 507 * 508 * Do not call this function directly, use 509 * drm_atomic_connector_get_property() instead. 510 * 511 * This callback is optional if the driver does not support any 512 * driver-private atomic properties. 513 * 514 * RETURNS: 515 * 516 * 0 on success, -EINVAL if the property isn't implemented by the 517 * driver (which shouldn't ever happen, the core only asks for 518 * properties attached to this connector). 519 */ 520 int (*atomic_get_property)(struct drm_connector *connector, 521 const struct drm_connector_state *state, 522 struct drm_property *property, 523 uint64_t *val); 524 525 /** 526 * @atomic_print_state: 527 * 528 * If driver subclasses struct &drm_connector_state, it should implement 529 * this optional hook for printing additional driver specific state. 530 * 531 * Do not call this directly, use drm_atomic_connector_print_state() 532 * instead. 533 */ 534 void (*atomic_print_state)(struct drm_printer *p, 535 const struct drm_connector_state *state); 536 }; 537 538 /* mode specified on the command line */ 539 struct drm_cmdline_mode { 540 bool specified; 541 bool refresh_specified; 542 bool bpp_specified; 543 int xres, yres; 544 int bpp; 545 int refresh; 546 bool rb; 547 bool interlace; 548 bool cvt; 549 bool margins; 550 enum drm_connector_force force; 551 }; 552 553 /** 554 * struct drm_connector - central DRM connector control structure 555 * @dev: parent DRM device 556 * @kdev: kernel device for sysfs attributes 557 * @attr: sysfs attributes 558 * @head: list management 559 * @base: base KMS object 560 * @name: human readable name, can be overwritten by the driver 561 * @connector_type: one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 562 * @connector_type_id: index into connector type enum 563 * @interlace_allowed: can this connector handle interlaced modes? 564 * @doublescan_allowed: can this connector handle doublescan? 565 * @stereo_allowed: can this connector handle stereo modes? 566 * @modes: modes available on this connector (from fill_modes() + user) 567 * @status: one of the drm_connector_status enums (connected, not, or unknown) 568 * @probed_modes: list of modes derived directly from the display 569 * @funcs: connector control functions 570 * @edid_blob_ptr: DRM property containing EDID if present 571 * @properties: property tracking for this connector 572 * @dpms: current dpms state 573 * @helper_private: mid-layer private data 574 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector 575 * @force: a DRM_FORCE_<foo> state for forced mode sets 576 * @override_edid: has the EDID been overwritten through debugfs for testing? 577 * @encoder_ids: valid encoders for this connector 578 * @encoder: encoder driving this connector, if any 579 * @eld: EDID-like data, if present 580 * @latency_present: AV delay info from ELD, if found 581 * @video_latency: video latency info from ELD, if found 582 * @audio_latency: audio latency info from ELD, if found 583 * @null_edid_counter: track sinks that give us all zeros for the EDID 584 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum 585 * @edid_corrupt: indicates whether the last read EDID was corrupt 586 * @debugfs_entry: debugfs directory for this connector 587 * @state: current atomic state for this connector 588 * @has_tile: is this connector connected to a tiled monitor 589 * @tile_group: tile group for the connected monitor 590 * @tile_is_single_monitor: whether the tile is one monitor housing 591 * @num_h_tile: number of horizontal tiles in the tile group 592 * @num_v_tile: number of vertical tiles in the tile group 593 * @tile_h_loc: horizontal location of this tile 594 * @tile_v_loc: vertical location of this tile 595 * @tile_h_size: horizontal size of this tile. 596 * @tile_v_size: vertical size of this tile. 597 * 598 * Each connector may be connected to one or more CRTCs, or may be clonable by 599 * another connector if they can share a CRTC. Each connector also has a specific 600 * position in the broader display (referred to as a 'screen' though it could 601 * span multiple monitors). 602 */ 603 struct drm_connector { 604 struct drm_device *dev; 605 struct device *kdev; 606 struct device_attribute *attr; 607 struct list_head head; 608 609 struct drm_mode_object base; 610 611 char *name; 612 613 /** 614 * @mutex: Lock for general connector state, but currently only protects 615 * @registered. Most of the connector state is still protected by the 616 * mutex in &drm_mode_config. 617 */ 618 struct lock mutex; 619 620 /** 621 * @index: Compacted connector index, which matches the position inside 622 * the mode_config.list for drivers not supporting hot-add/removing. Can 623 * be used as an array index. It is invariant over the lifetime of the 624 * connector. 625 */ 626 unsigned index; 627 628 int connector_type; 629 int connector_type_id; 630 bool interlace_allowed; 631 bool doublescan_allowed; 632 bool stereo_allowed; 633 /** 634 * @registered: Is this connector exposed (registered) with userspace? 635 * Protected by @mutex. 636 */ 637 bool registered; 638 struct list_head modes; /* list of modes on this connector */ 639 640 enum drm_connector_status status; 641 642 /* these are modes added by probing with DDC or the BIOS */ 643 struct list_head probed_modes; 644 645 /** 646 * @display_info: Display information is filled from EDID information 647 * when a display is detected. For non hot-pluggable displays such as 648 * flat panels in embedded systems, the driver should initialize the 649 * display_info.width_mm and display_info.height_mm fields with the 650 * physical size of the display. 651 */ 652 struct drm_display_info display_info; 653 const struct drm_connector_funcs *funcs; 654 655 struct drm_property_blob *edid_blob_ptr; 656 struct drm_object_properties properties; 657 658 /** 659 * @path_blob_ptr: 660 * 661 * DRM blob property data for the DP MST path property. 662 */ 663 struct drm_property_blob *path_blob_ptr; 664 665 /** 666 * @tile_blob_ptr: 667 * 668 * DRM blob property data for the tile property (used mostly by DP MST). 669 * This is meant for screens which are driven through separate display 670 * pipelines represented by &drm_crtc, which might not be running with 671 * genlocked clocks. For tiled panels which are genlocked, like 672 * dual-link LVDS or dual-link DSI, the driver should try to not expose 673 * the tiling and virtualize both &drm_crtc and &drm_plane if needed. 674 */ 675 struct drm_property_blob *tile_blob_ptr; 676 677 /* should we poll this connector for connects and disconnects */ 678 /* hot plug detectable */ 679 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 680 /* poll for connections */ 681 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 682 /* can cleanly poll for disconnections without flickering the screen */ 683 /* DACs should rarely do this without a lot of testing */ 684 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 685 686 /** 687 * @polled: 688 * 689 * Connector polling mode, a combination of 690 * 691 * DRM_CONNECTOR_POLL_HPD 692 * The connector generates hotplug events and doesn't need to be 693 * periodically polled. The CONNECT and DISCONNECT flags must not 694 * be set together with the HPD flag. 695 * 696 * DRM_CONNECTOR_POLL_CONNECT 697 * Periodically poll the connector for connection. 698 * 699 * DRM_CONNECTOR_POLL_DISCONNECT 700 * Periodically poll the connector for disconnection. 701 * 702 * Set to 0 for connectors that don't support connection status 703 * discovery. 704 */ 705 uint8_t polled; 706 707 /* requested DPMS state */ 708 int dpms; 709 710 const struct drm_connector_helper_funcs *helper_private; 711 712 /* forced on connector */ 713 struct drm_cmdline_mode cmdline_mode; 714 enum drm_connector_force force; 715 bool override_edid; 716 717 #define DRM_CONNECTOR_MAX_ENCODER 3 718 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; 719 struct drm_encoder *encoder; /* currently active encoder */ 720 721 #define MAX_ELD_BYTES 128 722 /* EDID bits */ 723 uint8_t eld[MAX_ELD_BYTES]; 724 bool latency_present[2]; 725 int video_latency[2]; /* [0]: progressive, [1]: interlaced */ 726 int audio_latency[2]; 727 int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ 728 unsigned bad_edid_counter; 729 730 /* Flag for raw EDID header corruption - used in Displayport 731 * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6 732 */ 733 bool edid_corrupt; 734 735 struct dentry *debugfs_entry; 736 737 struct drm_connector_state *state; 738 739 /* DisplayID bits */ 740 bool has_tile; 741 struct drm_tile_group *tile_group; 742 bool tile_is_single_monitor; 743 744 uint8_t num_h_tile, num_v_tile; 745 uint8_t tile_h_loc, tile_v_loc; 746 uint16_t tile_h_size, tile_v_size; 747 }; 748 749 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 750 751 int drm_connector_init(struct drm_device *dev, 752 struct drm_connector *connector, 753 const struct drm_connector_funcs *funcs, 754 int connector_type); 755 int drm_connector_register(struct drm_connector *connector); 756 void drm_connector_unregister(struct drm_connector *connector); 757 int drm_mode_connector_attach_encoder(struct drm_connector *connector, 758 struct drm_encoder *encoder); 759 760 void drm_connector_cleanup(struct drm_connector *connector); 761 extern unsigned int drm_connector_index(struct drm_connector *connector); 762 763 /** 764 * drm_connector_lookup - lookup connector object 765 * @dev: DRM device 766 * @id: connector object id 767 * 768 * This function looks up the connector object specified by id 769 * add takes a reference to it. 770 */ 771 static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, 772 uint32_t id) 773 { 774 struct drm_mode_object *mo; 775 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR); 776 return mo ? obj_to_connector(mo) : NULL; 777 } 778 779 /** 780 * drm_connector_reference - incr the connector refcnt 781 * @connector: connector 782 * 783 * This function increments the connector's refcount. 784 */ 785 static inline void drm_connector_reference(struct drm_connector *connector) 786 { 787 drm_mode_object_reference(&connector->base); 788 } 789 790 /** 791 * drm_connector_unreference - unref a connector 792 * @connector: connector to unref 793 * 794 * This function decrements the connector's refcount and frees it if it drops to zero. 795 */ 796 static inline void drm_connector_unreference(struct drm_connector *connector) 797 { 798 drm_mode_object_unreference(&connector->base); 799 } 800 801 const char *drm_get_connector_status_name(enum drm_connector_status status); 802 const char *drm_get_subpixel_order_name(enum subpixel_order order); 803 const char *drm_get_dpms_name(int val); 804 const char *drm_get_dvi_i_subconnector_name(int val); 805 const char *drm_get_dvi_i_select_name(int val); 806 const char *drm_get_tv_subconnector_name(int val); 807 const char *drm_get_tv_select_name(int val); 808 809 int drm_mode_create_dvi_i_properties(struct drm_device *dev); 810 int drm_mode_create_tv_properties(struct drm_device *dev, 811 unsigned int num_modes, 812 const char * const modes[]); 813 int drm_mode_create_scaling_mode_property(struct drm_device *dev); 814 int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 815 int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 816 817 int drm_mode_connector_set_path_property(struct drm_connector *connector, 818 const char *path); 819 int drm_mode_connector_set_tile_property(struct drm_connector *connector); 820 int drm_mode_connector_update_edid_property(struct drm_connector *connector, 821 const struct edid *edid); 822 823 /** 824 * struct drm_tile_group - Tile group metadata 825 * @refcount: reference count 826 * @dev: DRM device 827 * @id: tile group id exposed to userspace 828 * @group_data: Sink-private data identifying this group 829 * 830 * @group_data corresponds to displayid vend/prod/serial for external screens 831 * with an EDID. 832 */ 833 struct drm_tile_group { 834 struct kref refcount; 835 struct drm_device *dev; 836 int id; 837 u8 group_data[8]; 838 }; 839 840 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 841 char topology[8]); 842 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 843 char topology[8]); 844 void drm_mode_put_tile_group(struct drm_device *dev, 845 struct drm_tile_group *tg); 846 847 /** 848 * drm_for_each_connector - iterate over all connectors 849 * @connector: the loop cursor 850 * @dev: the DRM device 851 * 852 * Iterate over all connectors of @dev. 853 */ 854 #define drm_for_each_connector(connector, dev) \ 855 for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \ 856 connector = list_first_entry(&(dev)->mode_config.connector_list, \ 857 struct drm_connector, head); \ 858 &connector->head != (&(dev)->mode_config.connector_list); \ 859 connector = list_next_entry(connector, head)) 860 861 #endif 862