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 * Returns: 385 * 386 * 0 on success, or a negative error code on failure. 387 */ 388 int (*late_register)(struct drm_connector *connector); 389 390 /** 391 * @early_unregister: 392 * 393 * This optional hook should be used to unregister the additional 394 * userspace interfaces attached to the connector from 395 * late_register(). It is called from drm_connector_unregister(), 396 * early in the driver unload sequence to disable userspace access 397 * before data structures are torndown. 398 */ 399 void (*early_unregister)(struct drm_connector *connector); 400 401 /** 402 * @destroy: 403 * 404 * Clean up connector resources. This is called at driver unload time 405 * through drm_mode_config_cleanup(). It can also be called at runtime 406 * when a connector is being hot-unplugged for drivers that support 407 * connector hotplugging (e.g. DisplayPort MST). 408 */ 409 void (*destroy)(struct drm_connector *connector); 410 411 /** 412 * @atomic_duplicate_state: 413 * 414 * Duplicate the current atomic state for this connector and return it. 415 * The core and helpers guarantee that any atomic state duplicated with 416 * this hook and still owned by the caller (i.e. not transferred to the 417 * driver by calling ->atomic_commit() from struct 418 * &drm_mode_config_funcs) will be cleaned up by calling the 419 * @atomic_destroy_state hook in this structure. 420 * 421 * Atomic drivers which don't subclass struct &drm_connector_state should use 422 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the 423 * state structure to extend it with driver-private state should use 424 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is 425 * duplicated in a consistent fashion across drivers. 426 * 427 * It is an error to call this hook before connector->state has been 428 * initialized correctly. 429 * 430 * NOTE: 431 * 432 * If the duplicate state references refcounted resources this hook must 433 * acquire a reference for each of them. The driver must release these 434 * references again in @atomic_destroy_state. 435 * 436 * RETURNS: 437 * 438 * Duplicated atomic state or NULL when the allocation failed. 439 */ 440 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 441 442 /** 443 * @atomic_destroy_state: 444 * 445 * Destroy a state duplicated with @atomic_duplicate_state and release 446 * or unreference all resources it references 447 */ 448 void (*atomic_destroy_state)(struct drm_connector *connector, 449 struct drm_connector_state *state); 450 451 /** 452 * @atomic_set_property: 453 * 454 * Decode a driver-private property value and store the decoded value 455 * into the passed-in state structure. Since the atomic core decodes all 456 * standardized properties (even for extensions beyond the core set of 457 * properties which might not be implemented by all drivers) this 458 * requires drivers to subclass the state structure. 459 * 460 * Such driver-private properties should really only be implemented for 461 * truly hardware/vendor specific state. Instead it is preferred to 462 * standardize atomic extension and decode the properties used to expose 463 * such an extension in the core. 464 * 465 * Do not call this function directly, use 466 * drm_atomic_connector_set_property() instead. 467 * 468 * This callback is optional if the driver does not support any 469 * driver-private atomic properties. 470 * 471 * NOTE: 472 * 473 * This function is called in the state assembly phase of atomic 474 * modesets, which can be aborted for any reason (including on 475 * userspace's request to just check whether a configuration would be 476 * possible). Drivers MUST NOT touch any persistent state (hardware or 477 * software) or data structures except the passed in @state parameter. 478 * 479 * Also since userspace controls in which order properties are set this 480 * function must not do any input validation (since the state update is 481 * incomplete and hence likely inconsistent). Instead any such input 482 * validation must be done in the various atomic_check callbacks. 483 * 484 * RETURNS: 485 * 486 * 0 if the property has been found, -EINVAL if the property isn't 487 * implemented by the driver (which shouldn't ever happen, the core only 488 * asks for properties attached to this connector). No other validation 489 * is allowed by the driver. The core already checks that the property 490 * value is within the range (integer, valid enum value, ...) the driver 491 * set when registering the property. 492 */ 493 int (*atomic_set_property)(struct drm_connector *connector, 494 struct drm_connector_state *state, 495 struct drm_property *property, 496 uint64_t val); 497 498 /** 499 * @atomic_get_property: 500 * 501 * Reads out the decoded driver-private property. This is used to 502 * implement the GETCONNECTOR IOCTL. 503 * 504 * Do not call this function directly, use 505 * drm_atomic_connector_get_property() instead. 506 * 507 * This callback is optional if the driver does not support any 508 * driver-private atomic properties. 509 * 510 * RETURNS: 511 * 512 * 0 on success, -EINVAL if the property isn't implemented by the 513 * driver (which shouldn't ever happen, the core only asks for 514 * properties attached to this connector). 515 */ 516 int (*atomic_get_property)(struct drm_connector *connector, 517 const struct drm_connector_state *state, 518 struct drm_property *property, 519 uint64_t *val); 520 521 /** 522 * @atomic_print_state: 523 * 524 * If driver subclasses struct &drm_connector_state, it should implement 525 * this optional hook for printing additional driver specific state. 526 * 527 * Do not call this directly, use drm_atomic_connector_print_state() 528 * instead. 529 */ 530 void (*atomic_print_state)(struct drm_printer *p, 531 const struct drm_connector_state *state); 532 }; 533 534 /* mode specified on the command line */ 535 struct drm_cmdline_mode { 536 bool specified; 537 bool refresh_specified; 538 bool bpp_specified; 539 int xres, yres; 540 int bpp; 541 int refresh; 542 bool rb; 543 bool interlace; 544 bool cvt; 545 bool margins; 546 enum drm_connector_force force; 547 }; 548 549 /** 550 * struct drm_connector - central DRM connector control structure 551 * @dev: parent DRM device 552 * @kdev: kernel device for sysfs attributes 553 * @attr: sysfs attributes 554 * @head: list management 555 * @base: base KMS object 556 * @name: human readable name, can be overwritten by the driver 557 * @connector_type: one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 558 * @connector_type_id: index into connector type enum 559 * @interlace_allowed: can this connector handle interlaced modes? 560 * @doublescan_allowed: can this connector handle doublescan? 561 * @stereo_allowed: can this connector handle stereo modes? 562 * @registered: is this connector exposed (registered) with userspace? 563 * @modes: modes available on this connector (from fill_modes() + user) 564 * @status: one of the drm_connector_status enums (connected, not, or unknown) 565 * @probed_modes: list of modes derived directly from the display 566 * @funcs: connector control functions 567 * @edid_blob_ptr: DRM property containing EDID if present 568 * @properties: property tracking for this connector 569 * @dpms: current dpms state 570 * @helper_private: mid-layer private data 571 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector 572 * @force: a DRM_FORCE_<foo> state for forced mode sets 573 * @override_edid: has the EDID been overwritten through debugfs for testing? 574 * @encoder_ids: valid encoders for this connector 575 * @encoder: encoder driving this connector, if any 576 * @eld: EDID-like data, if present 577 * @latency_present: AV delay info from ELD, if found 578 * @video_latency: video latency info from ELD, if found 579 * @audio_latency: audio latency info from ELD, if found 580 * @null_edid_counter: track sinks that give us all zeros for the EDID 581 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum 582 * @edid_corrupt: indicates whether the last read EDID was corrupt 583 * @debugfs_entry: debugfs directory for this connector 584 * @state: current atomic state for this connector 585 * @has_tile: is this connector connected to a tiled monitor 586 * @tile_group: tile group for the connected monitor 587 * @tile_is_single_monitor: whether the tile is one monitor housing 588 * @num_h_tile: number of horizontal tiles in the tile group 589 * @num_v_tile: number of vertical tiles in the tile group 590 * @tile_h_loc: horizontal location of this tile 591 * @tile_v_loc: vertical location of this tile 592 * @tile_h_size: horizontal size of this tile. 593 * @tile_v_size: vertical size of this tile. 594 * 595 * Each connector may be connected to one or more CRTCs, or may be clonable by 596 * another connector if they can share a CRTC. Each connector also has a specific 597 * position in the broader display (referred to as a 'screen' though it could 598 * span multiple monitors). 599 */ 600 struct drm_connector { 601 struct drm_device *dev; 602 struct device *kdev; 603 struct device_attribute *attr; 604 struct list_head head; 605 606 struct drm_mode_object base; 607 608 char *name; 609 610 /** 611 * @index: Compacted connector index, which matches the position inside 612 * the mode_config.list for drivers not supporting hot-add/removing. Can 613 * be used as an array index. It is invariant over the lifetime of the 614 * connector. 615 */ 616 unsigned index; 617 618 int connector_type; 619 int connector_type_id; 620 bool interlace_allowed; 621 bool doublescan_allowed; 622 bool stereo_allowed; 623 bool registered; 624 struct list_head modes; /* list of modes on this connector */ 625 626 enum drm_connector_status status; 627 628 /* these are modes added by probing with DDC or the BIOS */ 629 struct list_head probed_modes; 630 631 /** 632 * @display_info: Display information is filled from EDID information 633 * when a display is detected. For non hot-pluggable displays such as 634 * flat panels in embedded systems, the driver should initialize the 635 * display_info.width_mm and display_info.height_mm fields with the 636 * physical size of the display. 637 */ 638 struct drm_display_info display_info; 639 const struct drm_connector_funcs *funcs; 640 641 struct drm_property_blob *edid_blob_ptr; 642 struct drm_object_properties properties; 643 644 /** 645 * @path_blob_ptr: 646 * 647 * DRM blob property data for the DP MST path property. 648 */ 649 struct drm_property_blob *path_blob_ptr; 650 651 /** 652 * @tile_blob_ptr: 653 * 654 * DRM blob property data for the tile property (used mostly by DP MST). 655 * This is meant for screens which are driven through separate display 656 * pipelines represented by &drm_crtc, which might not be running with 657 * genlocked clocks. For tiled panels which are genlocked, like 658 * dual-link LVDS or dual-link DSI, the driver should try to not expose 659 * the tiling and virtualize both &drm_crtc and &drm_plane if needed. 660 */ 661 struct drm_property_blob *tile_blob_ptr; 662 663 /* should we poll this connector for connects and disconnects */ 664 /* hot plug detectable */ 665 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 666 /* poll for connections */ 667 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 668 /* can cleanly poll for disconnections without flickering the screen */ 669 /* DACs should rarely do this without a lot of testing */ 670 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 671 672 /** 673 * @polled: 674 * 675 * Connector polling mode, a combination of 676 * 677 * DRM_CONNECTOR_POLL_HPD 678 * The connector generates hotplug events and doesn't need to be 679 * periodically polled. The CONNECT and DISCONNECT flags must not 680 * be set together with the HPD flag. 681 * 682 * DRM_CONNECTOR_POLL_CONNECT 683 * Periodically poll the connector for connection. 684 * 685 * DRM_CONNECTOR_POLL_DISCONNECT 686 * Periodically poll the connector for disconnection. 687 * 688 * Set to 0 for connectors that don't support connection status 689 * discovery. 690 */ 691 uint8_t polled; 692 693 /* requested DPMS state */ 694 int dpms; 695 696 const struct drm_connector_helper_funcs *helper_private; 697 698 /* forced on connector */ 699 struct drm_cmdline_mode cmdline_mode; 700 enum drm_connector_force force; 701 bool override_edid; 702 703 #define DRM_CONNECTOR_MAX_ENCODER 3 704 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; 705 struct drm_encoder *encoder; /* currently active encoder */ 706 707 #define MAX_ELD_BYTES 128 708 /* EDID bits */ 709 uint8_t eld[MAX_ELD_BYTES]; 710 bool latency_present[2]; 711 int video_latency[2]; /* [0]: progressive, [1]: interlaced */ 712 int audio_latency[2]; 713 int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ 714 unsigned bad_edid_counter; 715 716 /* Flag for raw EDID header corruption - used in Displayport 717 * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6 718 */ 719 bool edid_corrupt; 720 721 struct dentry *debugfs_entry; 722 723 struct drm_connector_state *state; 724 725 /* DisplayID bits */ 726 bool has_tile; 727 struct drm_tile_group *tile_group; 728 bool tile_is_single_monitor; 729 730 uint8_t num_h_tile, num_v_tile; 731 uint8_t tile_h_loc, tile_v_loc; 732 uint16_t tile_h_size, tile_v_size; 733 }; 734 735 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 736 737 int drm_connector_init(struct drm_device *dev, 738 struct drm_connector *connector, 739 const struct drm_connector_funcs *funcs, 740 int connector_type); 741 int drm_connector_register(struct drm_connector *connector); 742 void drm_connector_unregister(struct drm_connector *connector); 743 int drm_mode_connector_attach_encoder(struct drm_connector *connector, 744 struct drm_encoder *encoder); 745 746 void drm_connector_cleanup(struct drm_connector *connector); 747 static inline unsigned drm_connector_index(struct drm_connector *connector) 748 { 749 return connector->index; 750 } 751 752 /** 753 * drm_connector_lookup - lookup connector object 754 * @dev: DRM device 755 * @id: connector object id 756 * 757 * This function looks up the connector object specified by id 758 * add takes a reference to it. 759 */ 760 static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, 761 uint32_t id) 762 { 763 struct drm_mode_object *mo; 764 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR); 765 return mo ? obj_to_connector(mo) : NULL; 766 } 767 768 /** 769 * drm_connector_reference - incr the connector refcnt 770 * @connector: connector 771 * 772 * This function increments the connector's refcount. 773 */ 774 static inline void drm_connector_reference(struct drm_connector *connector) 775 { 776 drm_mode_object_reference(&connector->base); 777 } 778 779 /** 780 * drm_connector_unreference - unref a connector 781 * @connector: connector to unref 782 * 783 * This function decrements the connector's refcount and frees it if it drops to zero. 784 */ 785 static inline void drm_connector_unreference(struct drm_connector *connector) 786 { 787 drm_mode_object_unreference(&connector->base); 788 } 789 790 const char *drm_get_connector_status_name(enum drm_connector_status status); 791 const char *drm_get_subpixel_order_name(enum subpixel_order order); 792 const char *drm_get_dpms_name(int val); 793 const char *drm_get_dvi_i_subconnector_name(int val); 794 const char *drm_get_dvi_i_select_name(int val); 795 const char *drm_get_tv_subconnector_name(int val); 796 const char *drm_get_tv_select_name(int val); 797 798 int drm_mode_create_dvi_i_properties(struct drm_device *dev); 799 int drm_mode_create_tv_properties(struct drm_device *dev, 800 unsigned int num_modes, 801 const char * const modes[]); 802 int drm_mode_create_scaling_mode_property(struct drm_device *dev); 803 int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 804 int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 805 806 int drm_mode_connector_set_path_property(struct drm_connector *connector, 807 const char *path); 808 int drm_mode_connector_set_tile_property(struct drm_connector *connector); 809 int drm_mode_connector_update_edid_property(struct drm_connector *connector, 810 const struct edid *edid); 811 812 /** 813 * struct drm_tile_group - Tile group metadata 814 * @refcount: reference count 815 * @dev: DRM device 816 * @id: tile group id exposed to userspace 817 * @group_data: Sink-private data identifying this group 818 * 819 * @group_data corresponds to displayid vend/prod/serial for external screens 820 * with an EDID. 821 */ 822 struct drm_tile_group { 823 struct kref refcount; 824 struct drm_device *dev; 825 int id; 826 u8 group_data[8]; 827 }; 828 829 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 830 char topology[8]); 831 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 832 char topology[8]); 833 void drm_mode_put_tile_group(struct drm_device *dev, 834 struct drm_tile_group *tg); 835 836 /** 837 * drm_for_each_connector - iterate over all connectors 838 * @connector: the loop cursor 839 * @dev: the DRM device 840 * 841 * Iterate over all connectors of @dev. 842 */ 843 #define drm_for_each_connector(connector, dev) \ 844 for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \ 845 connector = list_first_entry(&(dev)->mode_config.connector_list, \ 846 struct drm_connector, head); \ 847 &connector->head != (&(dev)->mode_config.connector_list); \ 848 connector = list_next_entry(connector, head)) 849 850 #endif 851