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/llist.h> 28 #include <linux/ctype.h> 29 #include <linux/hdmi.h> 30 #include <drm/drm_mode_object.h> 31 #include <drm/drm_util.h> 32 33 #include <uapi/drm/drm_mode.h> 34 35 struct drm_connector_helper_funcs; 36 struct drm_modeset_acquire_ctx; 37 struct drm_device; 38 struct drm_crtc; 39 struct drm_encoder; 40 struct drm_property; 41 struct drm_property_blob; 42 struct drm_printer; 43 struct edid; 44 45 enum drm_connector_force { 46 DRM_FORCE_UNSPECIFIED, 47 DRM_FORCE_OFF, 48 DRM_FORCE_ON, /* force on analog part normally */ 49 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 50 }; 51 52 /** 53 * enum drm_connector_status - status for a &drm_connector 54 * 55 * This enum is used to track the connector status. There are no separate 56 * #defines for the uapi! 57 */ 58 enum drm_connector_status { 59 /** 60 * @connector_status_connected: The connector is definitely connected to 61 * a sink device, and can be enabled. 62 */ 63 connector_status_connected = 1, 64 /** 65 * @connector_status_disconnected: The connector isn't connected to a 66 * sink device which can be autodetect. For digital outputs like DP or 67 * HDMI (which can be realiable probed) this means there's really 68 * nothing there. It is driver-dependent whether a connector with this 69 * status can be lit up or not. 70 */ 71 connector_status_disconnected = 2, 72 /** 73 * @connector_status_unknown: The connector's status could not be 74 * reliably detected. This happens when probing would either cause 75 * flicker (like load-detection when the connector is in use), or when a 76 * hardware resource isn't available (like when load-detection needs a 77 * free CRTC). It should be possible to light up the connector with one 78 * of the listed fallback modes. For default configuration userspace 79 * should only try to light up connectors with unknown status when 80 * there's not connector with @connector_status_connected. 81 */ 82 connector_status_unknown = 3, 83 }; 84 85 /** 86 * enum drm_connector_registration_status - userspace registration status for 87 * a &drm_connector 88 * 89 * This enum is used to track the status of initializing a connector and 90 * registering it with userspace, so that DRM can prevent bogus modesets on 91 * connectors that no longer exist. 92 */ 93 enum drm_connector_registration_state { 94 /** 95 * @DRM_CONNECTOR_INITIALIZING: The connector has just been created, 96 * but has yet to be exposed to userspace. There should be no 97 * additional restrictions to how the state of this connector may be 98 * modified. 99 */ 100 DRM_CONNECTOR_INITIALIZING = 0, 101 102 /** 103 * @DRM_CONNECTOR_REGISTERED: The connector has been fully initialized 104 * and registered with sysfs, as such it has been exposed to 105 * userspace. There should be no additional restrictions to how the 106 * state of this connector may be modified. 107 */ 108 DRM_CONNECTOR_REGISTERED = 1, 109 110 /** 111 * @DRM_CONNECTOR_UNREGISTERED: The connector has either been exposed 112 * to userspace and has since been unregistered and removed from 113 * userspace, or the connector was unregistered before it had a chance 114 * to be exposed to userspace (e.g. still in the 115 * @DRM_CONNECTOR_INITIALIZING state). When a connector is 116 * unregistered, there are additional restrictions to how its state 117 * may be modified: 118 * 119 * - An unregistered connector may only have its DPMS changed from 120 * On->Off. Once DPMS is changed to Off, it may not be switched back 121 * to On. 122 * - Modesets are not allowed on unregistered connectors, unless they 123 * would result in disabling its assigned CRTCs. This means 124 * disabling a CRTC on an unregistered connector is OK, but enabling 125 * one is not. 126 * - Removing a CRTC from an unregistered connector is OK, but new 127 * CRTCs may never be assigned to an unregistered connector. 128 */ 129 DRM_CONNECTOR_UNREGISTERED = 2, 130 }; 131 132 enum subpixel_order { 133 SubPixelUnknown = 0, 134 SubPixelHorizontalRGB, 135 SubPixelHorizontalBGR, 136 SubPixelVerticalRGB, 137 SubPixelVerticalBGR, 138 SubPixelNone, 139 140 }; 141 142 /** 143 * struct drm_scrambling: sink's scrambling support. 144 */ 145 struct drm_scrambling { 146 /** 147 * @supported: scrambling supported for rates > 340 Mhz. 148 */ 149 bool supported; 150 /** 151 * @low_rates: scrambling supported for rates <= 340 Mhz. 152 */ 153 bool low_rates; 154 }; 155 156 /* 157 * struct drm_scdc - Information about scdc capabilities of a HDMI 2.0 sink 158 * 159 * Provides SCDC register support and capabilities related information on a 160 * HDMI 2.0 sink. In case of a HDMI 1.4 sink, all parameter must be 0. 161 */ 162 struct drm_scdc { 163 /** 164 * @supported: status control & data channel present. 165 */ 166 bool supported; 167 /** 168 * @read_request: sink is capable of generating scdc read request. 169 */ 170 bool read_request; 171 /** 172 * @scrambling: sink's scrambling capabilities 173 */ 174 struct drm_scrambling scrambling; 175 }; 176 177 178 /** 179 * struct drm_hdmi_info - runtime information about the connected HDMI sink 180 * 181 * Describes if a given display supports advanced HDMI 2.0 features. 182 * This information is available in CEA-861-F extension blocks (like HF-VSDB). 183 */ 184 struct drm_hdmi_info { 185 /** @scdc: sink's scdc support and capabilities */ 186 struct drm_scdc scdc; 187 188 /** 189 * @y420_vdb_modes: bitmap of modes which can support ycbcr420 190 * output only (not normal RGB/YCBCR444/422 outputs). There are total 191 * 107 VICs defined by CEA-861-F spec, so the size is 128 bits to map 192 * upto 128 VICs; 193 */ 194 unsigned long y420_vdb_modes[BITS_TO_LONGS(128)]; 195 196 /** 197 * @y420_cmdb_modes: bitmap of modes which can support ycbcr420 198 * output also, along with normal HDMI outputs. There are total 107 199 * VICs defined by CEA-861-F spec, so the size is 128 bits to map upto 200 * 128 VICs; 201 */ 202 unsigned long y420_cmdb_modes[BITS_TO_LONGS(128)]; 203 204 /** @y420_cmdb_map: bitmap of SVD index, to extraxt vcb modes */ 205 u64 y420_cmdb_map; 206 207 /** @y420_dc_modes: bitmap of deep color support index */ 208 u8 y420_dc_modes; 209 }; 210 211 /** 212 * enum drm_link_status - connector's link_status property value 213 * 214 * This enum is used as the connector's link status property value. 215 * It is set to the values defined in uapi. 216 * 217 * @DRM_LINK_STATUS_GOOD: DP Link is Good as a result of successful 218 * link training 219 * @DRM_LINK_STATUS_BAD: DP Link is BAD as a result of link training 220 * failure 221 */ 222 enum drm_link_status { 223 DRM_LINK_STATUS_GOOD = DRM_MODE_LINK_STATUS_GOOD, 224 DRM_LINK_STATUS_BAD = DRM_MODE_LINK_STATUS_BAD, 225 }; 226 227 /** 228 * enum drm_panel_orientation - panel_orientation info for &drm_display_info 229 * 230 * This enum is used to track the (LCD) panel orientation. There are no 231 * separate #defines for the uapi! 232 * 233 * @DRM_MODE_PANEL_ORIENTATION_UNKNOWN: The drm driver has not provided any 234 * panel orientation information (normal 235 * for non panels) in this case the "panel 236 * orientation" connector prop will not be 237 * attached. 238 * @DRM_MODE_PANEL_ORIENTATION_NORMAL: The top side of the panel matches the 239 * top side of the device's casing. 240 * @DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: The top side of the panel matches the 241 * bottom side of the device's casing, iow 242 * the panel is mounted upside-down. 243 * @DRM_MODE_PANEL_ORIENTATION_LEFT_UP: The left side of the panel matches the 244 * top side of the device's casing. 245 * @DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: The right side of the panel matches the 246 * top side of the device's casing. 247 */ 248 enum drm_panel_orientation { 249 DRM_MODE_PANEL_ORIENTATION_UNKNOWN = -1, 250 DRM_MODE_PANEL_ORIENTATION_NORMAL = 0, 251 DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, 252 DRM_MODE_PANEL_ORIENTATION_LEFT_UP, 253 DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 254 }; 255 256 /** 257 * struct drm_display_info - runtime data about the connected sink 258 * 259 * Describes a given display (e.g. CRT or flat panel) and its limitations. For 260 * fixed display sinks like built-in panels there's not much difference between 261 * this and &struct drm_connector. But for sinks with a real cable this 262 * structure is meant to describe all the things at the other end of the cable. 263 * 264 * For sinks which provide an EDID this can be filled out by calling 265 * drm_add_edid_modes(). 266 */ 267 struct drm_display_info { 268 /** 269 * @name: Name of the display. 270 */ 271 char name[DRM_DISPLAY_INFO_LEN]; 272 273 /** 274 * @width_mm: Physical width in mm. 275 */ 276 unsigned int width_mm; 277 /** 278 * @height_mm: Physical height in mm. 279 */ 280 unsigned int height_mm; 281 282 /** 283 * @pixel_clock: Maximum pixel clock supported by the sink, in units of 284 * 100Hz. This mismatches the clock in &drm_display_mode (which is in 285 * kHZ), because that's what the EDID uses as base unit. 286 */ 287 unsigned int pixel_clock; 288 /** 289 * @bpc: Maximum bits per color channel. Used by HDMI and DP outputs. 290 */ 291 unsigned int bpc; 292 293 /** 294 * @subpixel_order: Subpixel order of LCD panels. 295 */ 296 enum subpixel_order subpixel_order; 297 298 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 299 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1) 300 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2) 301 #define DRM_COLOR_FORMAT_YCRCB420 (1<<3) 302 303 /** 304 * @panel_orientation: Read only connector property for built-in panels, 305 * indicating the orientation of the panel vs the device's casing. 306 * drm_connector_init() sets this to DRM_MODE_PANEL_ORIENTATION_UNKNOWN. 307 * When not UNKNOWN this gets used by the drm_fb_helpers to rotate the 308 * fb to compensate and gets exported as prop to userspace. 309 */ 310 int panel_orientation; 311 312 /** 313 * @color_formats: HDMI Color formats, selects between RGB and YCrCb 314 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones 315 * as used to describe the pixel format in framebuffers, and also don't 316 * match the formats in @bus_formats which are shared with v4l. 317 */ 318 u32 color_formats; 319 320 /** 321 * @bus_formats: Pixel data format on the wire, somewhat redundant with 322 * @color_formats. Array of size @num_bus_formats encoded using 323 * MEDIA_BUS_FMT\_ defines shared with v4l and media drivers. 324 */ 325 const u32 *bus_formats; 326 /** 327 * @num_bus_formats: Size of @bus_formats array. 328 */ 329 unsigned int num_bus_formats; 330 331 #define DRM_BUS_FLAG_DE_LOW (1<<0) 332 #define DRM_BUS_FLAG_DE_HIGH (1<<1) 333 /* drive data on pos. edge */ 334 #define DRM_BUS_FLAG_PIXDATA_POSEDGE (1<<2) 335 /* drive data on neg. edge */ 336 #define DRM_BUS_FLAG_PIXDATA_NEGEDGE (1<<3) 337 /* data is transmitted MSB to LSB on the bus */ 338 #define DRM_BUS_FLAG_DATA_MSB_TO_LSB (1<<4) 339 /* data is transmitted LSB to MSB on the bus */ 340 #define DRM_BUS_FLAG_DATA_LSB_TO_MSB (1<<5) 341 /* drive sync on pos. edge */ 342 #define DRM_BUS_FLAG_SYNC_POSEDGE (1<<6) 343 /* drive sync on neg. edge */ 344 #define DRM_BUS_FLAG_SYNC_NEGEDGE (1<<7) 345 346 /** 347 * @bus_flags: Additional information (like pixel signal polarity) for 348 * the pixel data on the bus, using DRM_BUS_FLAGS\_ defines. 349 */ 350 u32 bus_flags; 351 352 /** 353 * @max_tmds_clock: Maximum TMDS clock rate supported by the 354 * sink in kHz. 0 means undefined. 355 */ 356 int max_tmds_clock; 357 358 /** 359 * @dvi_dual: Dual-link DVI sink? 360 */ 361 bool dvi_dual; 362 363 /** 364 * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? 365 */ 366 bool has_hdmi_infoframe; 367 368 /** 369 * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even 370 * more stuff redundant with @bus_formats. 371 */ 372 u8 edid_hdmi_dc_modes; 373 374 /** 375 * @cea_rev: CEA revision of the HDMI sink. 376 */ 377 u8 cea_rev; 378 379 /** 380 * @hdmi: advance features of a HDMI sink. 381 */ 382 struct drm_hdmi_info hdmi; 383 384 /** 385 * @non_desktop: Non desktop display (HMD). 386 */ 387 bool non_desktop; 388 }; 389 390 int drm_display_info_set_bus_formats(struct drm_display_info *info, 391 const u32 *formats, 392 unsigned int num_formats); 393 394 /** 395 * struct drm_tv_connector_state - TV connector related states 396 * @subconnector: selected subconnector 397 * @margins: margins 398 * @margins.left: left margin 399 * @margins.right: right margin 400 * @margins.top: top margin 401 * @margins.bottom: bottom margin 402 * @mode: TV mode 403 * @brightness: brightness in percent 404 * @contrast: contrast in percent 405 * @flicker_reduction: flicker reduction in percent 406 * @overscan: overscan in percent 407 * @saturation: saturation in percent 408 * @hue: hue in percent 409 */ 410 struct drm_tv_connector_state { 411 enum drm_mode_subconnector subconnector; 412 struct { 413 unsigned int left; 414 unsigned int right; 415 unsigned int top; 416 unsigned int bottom; 417 } margins; 418 unsigned int mode; 419 unsigned int brightness; 420 unsigned int contrast; 421 unsigned int flicker_reduction; 422 unsigned int overscan; 423 unsigned int saturation; 424 unsigned int hue; 425 }; 426 427 /** 428 * struct drm_connector_state - mutable connector state 429 */ 430 struct drm_connector_state { 431 /** @connector: backpointer to the connector */ 432 struct drm_connector *connector; 433 434 /** 435 * @crtc: CRTC to connect connector to, NULL if disabled. 436 * 437 * Do not change this directly, use drm_atomic_set_crtc_for_connector() 438 * instead. 439 */ 440 struct drm_crtc *crtc; 441 442 /** 443 * @best_encoder: 444 * 445 * Used by the atomic helpers to select the encoder, through the 446 * &drm_connector_helper_funcs.atomic_best_encoder or 447 * &drm_connector_helper_funcs.best_encoder callbacks. 448 */ 449 struct drm_encoder *best_encoder; 450 451 /** 452 * @link_status: Connector link_status to keep track of whether link is 453 * GOOD or BAD to notify userspace if retraining is necessary. 454 */ 455 enum drm_link_status link_status; 456 457 /** @state: backpointer to global drm_atomic_state */ 458 struct drm_atomic_state *state; 459 460 /** 461 * @commit: Tracks the pending commit to prevent use-after-free conditions. 462 * 463 * Is only set when @crtc is NULL. 464 */ 465 struct drm_crtc_commit *commit; 466 467 /** @tv: TV connector state */ 468 struct drm_tv_connector_state tv; 469 470 /** 471 * @picture_aspect_ratio: Connector property to control the 472 * HDMI infoframe aspect ratio setting. 473 * 474 * The %DRM_MODE_PICTURE_ASPECT_\* values much match the 475 * values for &enum hdmi_picture_aspect 476 */ 477 enum hdmi_picture_aspect picture_aspect_ratio; 478 479 /** 480 * @content_type: Connector property to control the 481 * HDMI infoframe content type setting. 482 * The %DRM_MODE_CONTENT_TYPE_\* values much 483 * match the values. 484 */ 485 unsigned int content_type; 486 487 /** 488 * @scaling_mode: Connector property to control the 489 * upscaling, mostly used for built-in panels. 490 */ 491 unsigned int scaling_mode; 492 493 /** 494 * @content_protection: Connector property to request content 495 * protection. This is most commonly used for HDCP. 496 */ 497 unsigned int content_protection; 498 499 /** 500 * @writeback_job: Writeback job for writeback connectors 501 * 502 * Holds the framebuffer and out-fence for a writeback connector. As 503 * the writeback completion may be asynchronous to the normal commit 504 * cycle, the writeback job lifetime is managed separately from the 505 * normal atomic state by this object. 506 * 507 * See also: drm_writeback_queue_job() and 508 * drm_writeback_signal_completion() 509 */ 510 struct drm_writeback_job *writeback_job; 511 512 /** 513 * @max_requested_bpc: Connector property to limit the maximum bit 514 * depth of the pixels. 515 */ 516 u8 max_requested_bpc; 517 518 /** 519 * @max_bpc: Connector max_bpc based on the requested max_bpc property 520 * and the connector bpc limitations obtained from edid. 521 */ 522 u8 max_bpc; 523 }; 524 525 /** 526 * struct drm_connector_funcs - control connectors on a given device 527 * 528 * Each CRTC may have one or more connectors attached to it. The functions 529 * below allow the core DRM code to control connectors, enumerate available modes, 530 * etc. 531 */ 532 struct drm_connector_funcs { 533 /** 534 * @dpms: 535 * 536 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS 537 * is exposed as a standard property on the connector, but diverted to 538 * this callback in the drm core. Note that atomic drivers don't 539 * implement the 4 level DPMS support on the connector any more, but 540 * instead only have an on/off "ACTIVE" property on the CRTC object. 541 * 542 * This hook is not used by atomic drivers, remapping of the legacy DPMS 543 * property is entirely handled in the DRM core. 544 * 545 * RETURNS: 546 * 547 * 0 on success or a negative error code on failure. 548 */ 549 int (*dpms)(struct drm_connector *connector, int mode); 550 551 /** 552 * @reset: 553 * 554 * Reset connector hardware and software state to off. This function isn't 555 * called by the core directly, only through drm_mode_config_reset(). 556 * It's not a helper hook only for historical reasons. 557 * 558 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset 559 * atomic state using this hook. 560 */ 561 void (*reset)(struct drm_connector *connector); 562 563 /** 564 * @detect: 565 * 566 * Check to see if anything is attached to the connector. The parameter 567 * force is set to false whilst polling, true when checking the 568 * connector due to a user request. force can be used by the driver to 569 * avoid expensive, destructive operations during automated probing. 570 * 571 * This callback is optional, if not implemented the connector will be 572 * considered as always being attached. 573 * 574 * FIXME: 575 * 576 * Note that this hook is only called by the probe helper. It's not in 577 * the helper library vtable purely for historical reasons. The only DRM 578 * core entry point to probe connector state is @fill_modes. 579 * 580 * Note that the helper library will already hold 581 * &drm_mode_config.connection_mutex. Drivers which need to grab additional 582 * locks to avoid races with concurrent modeset changes need to use 583 * &drm_connector_helper_funcs.detect_ctx instead. 584 * 585 * RETURNS: 586 * 587 * drm_connector_status indicating the connector's status. 588 */ 589 enum drm_connector_status (*detect)(struct drm_connector *connector, 590 bool force); 591 592 /** 593 * @force: 594 * 595 * This function is called to update internal encoder state when the 596 * connector is forced to a certain state by userspace, either through 597 * the sysfs interfaces or on the kernel cmdline. In that case the 598 * @detect callback isn't called. 599 * 600 * FIXME: 601 * 602 * Note that this hook is only called by the probe helper. It's not in 603 * the helper library vtable purely for historical reasons. The only DRM 604 * core entry point to probe connector state is @fill_modes. 605 */ 606 void (*force)(struct drm_connector *connector); 607 608 /** 609 * @fill_modes: 610 * 611 * Entry point for output detection and basic mode validation. The 612 * driver should reprobe the output if needed (e.g. when hotplug 613 * handling is unreliable), add all detected modes to &drm_connector.modes 614 * and filter out any the device can't support in any configuration. It 615 * also needs to filter out any modes wider or higher than the 616 * parameters max_width and max_height indicate. 617 * 618 * The drivers must also prune any modes no longer valid from 619 * &drm_connector.modes. Furthermore it must update 620 * &drm_connector.status and &drm_connector.edid. If no EDID has been 621 * received for this output connector->edid must be NULL. 622 * 623 * Drivers using the probe helpers should use 624 * drm_helper_probe_single_connector_modes() to implement this 625 * function. 626 * 627 * RETURNS: 628 * 629 * The number of modes detected and filled into &drm_connector.modes. 630 */ 631 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 632 633 /** 634 * @set_property: 635 * 636 * This is the legacy entry point to update a property attached to the 637 * connector. 638 * 639 * This callback is optional if the driver does not support any legacy 640 * driver-private properties. For atomic drivers it is not used because 641 * property handling is done entirely in the DRM core. 642 * 643 * RETURNS: 644 * 645 * 0 on success or a negative error code on failure. 646 */ 647 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 648 uint64_t val); 649 650 /** 651 * @late_register: 652 * 653 * This optional hook can be used to register additional userspace 654 * interfaces attached to the connector, light backlight control, i2c, 655 * DP aux or similar interfaces. It is called late in the driver load 656 * sequence from drm_connector_register() when registering all the 657 * core drm connector interfaces. Everything added from this callback 658 * should be unregistered in the early_unregister callback. 659 * 660 * This is called while holding &drm_connector.mutex. 661 * 662 * Returns: 663 * 664 * 0 on success, or a negative error code on failure. 665 */ 666 int (*late_register)(struct drm_connector *connector); 667 668 /** 669 * @early_unregister: 670 * 671 * This optional hook should be used to unregister the additional 672 * userspace interfaces attached to the connector from 673 * late_register(). It is called from drm_connector_unregister(), 674 * early in the driver unload sequence to disable userspace access 675 * before data structures are torndown. 676 * 677 * This is called while holding &drm_connector.mutex. 678 */ 679 void (*early_unregister)(struct drm_connector *connector); 680 681 /** 682 * @destroy: 683 * 684 * Clean up connector resources. This is called at driver unload time 685 * through drm_mode_config_cleanup(). It can also be called at runtime 686 * when a connector is being hot-unplugged for drivers that support 687 * connector hotplugging (e.g. DisplayPort MST). 688 */ 689 void (*destroy)(struct drm_connector *connector); 690 691 /** 692 * @atomic_duplicate_state: 693 * 694 * Duplicate the current atomic state for this connector and return it. 695 * The core and helpers guarantee that any atomic state duplicated with 696 * this hook and still owned by the caller (i.e. not transferred to the 697 * driver by calling &drm_mode_config_funcs.atomic_commit) will be 698 * cleaned up by calling the @atomic_destroy_state hook in this 699 * structure. 700 * 701 * This callback is mandatory for atomic drivers. 702 * 703 * Atomic drivers which don't subclass &struct drm_connector_state should use 704 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the 705 * state structure to extend it with driver-private state should use 706 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is 707 * duplicated in a consistent fashion across drivers. 708 * 709 * It is an error to call this hook before &drm_connector.state has been 710 * initialized correctly. 711 * 712 * NOTE: 713 * 714 * If the duplicate state references refcounted resources this hook must 715 * acquire a reference for each of them. The driver must release these 716 * references again in @atomic_destroy_state. 717 * 718 * RETURNS: 719 * 720 * Duplicated atomic state or NULL when the allocation failed. 721 */ 722 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 723 724 /** 725 * @atomic_destroy_state: 726 * 727 * Destroy a state duplicated with @atomic_duplicate_state and release 728 * or unreference all resources it references 729 * 730 * This callback is mandatory for atomic drivers. 731 */ 732 void (*atomic_destroy_state)(struct drm_connector *connector, 733 struct drm_connector_state *state); 734 735 /** 736 * @atomic_set_property: 737 * 738 * Decode a driver-private property value and store the decoded value 739 * into the passed-in state structure. Since the atomic core decodes all 740 * standardized properties (even for extensions beyond the core set of 741 * properties which might not be implemented by all drivers) this 742 * requires drivers to subclass the state structure. 743 * 744 * Such driver-private properties should really only be implemented for 745 * truly hardware/vendor specific state. Instead it is preferred to 746 * standardize atomic extension and decode the properties used to expose 747 * such an extension in the core. 748 * 749 * Do not call this function directly, use 750 * drm_atomic_connector_set_property() instead. 751 * 752 * This callback is optional if the driver does not support any 753 * driver-private atomic properties. 754 * 755 * NOTE: 756 * 757 * This function is called in the state assembly phase of atomic 758 * modesets, which can be aborted for any reason (including on 759 * userspace's request to just check whether a configuration would be 760 * possible). Drivers MUST NOT touch any persistent state (hardware or 761 * software) or data structures except the passed in @state parameter. 762 * 763 * Also since userspace controls in which order properties are set this 764 * function must not do any input validation (since the state update is 765 * incomplete and hence likely inconsistent). Instead any such input 766 * validation must be done in the various atomic_check callbacks. 767 * 768 * RETURNS: 769 * 770 * 0 if the property has been found, -EINVAL if the property isn't 771 * implemented by the driver (which shouldn't ever happen, the core only 772 * asks for properties attached to this connector). No other validation 773 * is allowed by the driver. The core already checks that the property 774 * value is within the range (integer, valid enum value, ...) the driver 775 * set when registering the property. 776 */ 777 int (*atomic_set_property)(struct drm_connector *connector, 778 struct drm_connector_state *state, 779 struct drm_property *property, 780 uint64_t val); 781 782 /** 783 * @atomic_get_property: 784 * 785 * Reads out the decoded driver-private property. This is used to 786 * implement the GETCONNECTOR IOCTL. 787 * 788 * Do not call this function directly, use 789 * drm_atomic_connector_get_property() instead. 790 * 791 * This callback is optional if the driver does not support any 792 * driver-private atomic properties. 793 * 794 * RETURNS: 795 * 796 * 0 on success, -EINVAL if the property isn't implemented by the 797 * driver (which shouldn't ever happen, the core only asks for 798 * properties attached to this connector). 799 */ 800 int (*atomic_get_property)(struct drm_connector *connector, 801 const struct drm_connector_state *state, 802 struct drm_property *property, 803 uint64_t *val); 804 805 /** 806 * @atomic_print_state: 807 * 808 * If driver subclasses &struct drm_connector_state, it should implement 809 * this optional hook for printing additional driver specific state. 810 * 811 * Do not call this directly, use drm_atomic_connector_print_state() 812 * instead. 813 */ 814 void (*atomic_print_state)(struct drm_printer *p, 815 const struct drm_connector_state *state); 816 }; 817 818 /* mode specified on the command line */ 819 struct drm_cmdline_mode { 820 bool specified; 821 bool refresh_specified; 822 bool bpp_specified; 823 int xres, yres; 824 int bpp; 825 int refresh; 826 bool rb; 827 bool interlace; 828 bool cvt; 829 bool margins; 830 enum drm_connector_force force; 831 }; 832 833 /** 834 * struct drm_connector - central DRM connector control structure 835 * 836 * Each connector may be connected to one or more CRTCs, or may be clonable by 837 * another connector if they can share a CRTC. Each connector also has a specific 838 * position in the broader display (referred to as a 'screen' though it could 839 * span multiple monitors). 840 */ 841 struct drm_connector { 842 /** @dev: parent DRM device */ 843 struct drm_device *dev; 844 /** @kdev: kernel device for sysfs attributes */ 845 struct device *kdev; 846 /** @attr: sysfs attributes */ 847 struct device_attribute *attr; 848 849 /** 850 * @head: 851 * 852 * List of all connectors on a @dev, linked from 853 * &drm_mode_config.connector_list. Protected by 854 * &drm_mode_config.connector_list_lock, but please only use 855 * &drm_connector_list_iter to walk this list. 856 */ 857 struct list_head head; 858 859 /** @base: base KMS object */ 860 struct drm_mode_object base; 861 862 /** @name: human readable name, can be overwritten by the driver */ 863 char *name; 864 865 /** 866 * @mutex: Lock for general connector state, but currently only protects 867 * @registered. Most of the connector state is still protected by 868 * &drm_mode_config.mutex. 869 */ 870 struct mutex mutex; 871 872 /** 873 * @index: Compacted connector index, which matches the position inside 874 * the mode_config.list for drivers not supporting hot-add/removing. Can 875 * be used as an array index. It is invariant over the lifetime of the 876 * connector. 877 */ 878 unsigned index; 879 880 /** 881 * @connector_type: 882 * one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 883 */ 884 int connector_type; 885 /** @connector_type_id: index into connector type enum */ 886 int connector_type_id; 887 /** 888 * @interlace_allowed: 889 * Can this connector handle interlaced modes? Only used by 890 * drm_helper_probe_single_connector_modes() for mode filtering. 891 */ 892 bool interlace_allowed; 893 /** 894 * @doublescan_allowed: 895 * Can this connector handle doublescan? Only used by 896 * drm_helper_probe_single_connector_modes() for mode filtering. 897 */ 898 bool doublescan_allowed; 899 /** 900 * @stereo_allowed: 901 * Can this connector handle stereo modes? Only used by 902 * drm_helper_probe_single_connector_modes() for mode filtering. 903 */ 904 bool stereo_allowed; 905 906 /** 907 * @ycbcr_420_allowed : This bool indicates if this connector is 908 * capable of handling YCBCR 420 output. While parsing the EDID 909 * blocks, its very helpful to know, if the source is capable of 910 * handling YCBCR 420 outputs. 911 */ 912 bool ycbcr_420_allowed; 913 914 /** 915 * @registration_state: Is this connector initializing, exposed 916 * (registered) with userspace, or unregistered? 917 * 918 * Protected by @mutex. 919 */ 920 enum drm_connector_registration_state registration_state; 921 922 /** 923 * @modes: 924 * Modes available on this connector (from fill_modes() + user). 925 * Protected by &drm_mode_config.mutex. 926 */ 927 struct list_head modes; 928 929 /** 930 * @status: 931 * One of the drm_connector_status enums (connected, not, or unknown). 932 * Protected by &drm_mode_config.mutex. 933 */ 934 enum drm_connector_status status; 935 936 /** 937 * @probed_modes: 938 * These are modes added by probing with DDC or the BIOS, before 939 * filtering is applied. Used by the probe helpers. Protected by 940 * &drm_mode_config.mutex. 941 */ 942 struct list_head probed_modes; 943 944 /** 945 * @display_info: Display information is filled from EDID information 946 * when a display is detected. For non hot-pluggable displays such as 947 * flat panels in embedded systems, the driver should initialize the 948 * &drm_display_info.width_mm and &drm_display_info.height_mm fields 949 * with the physical size of the display. 950 * 951 * Protected by &drm_mode_config.mutex. 952 */ 953 struct drm_display_info display_info; 954 955 /** @funcs: connector control functions */ 956 const struct drm_connector_funcs *funcs; 957 958 /** 959 * @edid_blob_ptr: DRM property containing EDID if present. Protected by 960 * &drm_mode_config.mutex. This should be updated only by calling 961 * drm_connector_update_edid_property(). 962 */ 963 struct drm_property_blob *edid_blob_ptr; 964 965 /** @properties: property tracking for this connector */ 966 struct drm_object_properties properties; 967 968 /** 969 * @scaling_mode_property: Optional atomic property to control the 970 * upscaling. See drm_connector_attach_content_protection_property(). 971 */ 972 struct drm_property *scaling_mode_property; 973 974 /** 975 * @vrr_capable_property: Optional property to help userspace 976 * query hardware support for variable refresh rate on a connector. 977 * connector. Drivers can add the property to a connector by 978 * calling drm_connector_attach_vrr_capable_property(). 979 * 980 * This should be updated only by calling 981 * drm_connector_set_vrr_capable_property(). 982 */ 983 struct drm_property *vrr_capable_property; 984 985 /** 986 * @content_protection_property: DRM ENUM property for content 987 * protection. See drm_connector_attach_content_protection_property(). 988 */ 989 struct drm_property *content_protection_property; 990 991 /** 992 * @path_blob_ptr: 993 * 994 * DRM blob property data for the DP MST path property. This should only 995 * be updated by calling drm_connector_set_path_property(). 996 */ 997 struct drm_property_blob *path_blob_ptr; 998 999 /** 1000 * @max_bpc_property: Default connector property for the max bpc to be 1001 * driven out of the connector. 1002 */ 1003 struct drm_property *max_bpc_property; 1004 1005 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 1006 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 1007 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 1008 1009 /** 1010 * @polled: 1011 * 1012 * Connector polling mode, a combination of 1013 * 1014 * DRM_CONNECTOR_POLL_HPD 1015 * The connector generates hotplug events and doesn't need to be 1016 * periodically polled. The CONNECT and DISCONNECT flags must not 1017 * be set together with the HPD flag. 1018 * 1019 * DRM_CONNECTOR_POLL_CONNECT 1020 * Periodically poll the connector for connection. 1021 * 1022 * DRM_CONNECTOR_POLL_DISCONNECT 1023 * Periodically poll the connector for disconnection, without 1024 * causing flickering even when the connector is in use. DACs should 1025 * rarely do this without a lot of testing. 1026 * 1027 * Set to 0 for connectors that don't support connection status 1028 * discovery. 1029 */ 1030 uint8_t polled; 1031 1032 /** 1033 * @dpms: Current dpms state. For legacy drivers the 1034 * &drm_connector_funcs.dpms callback must update this. For atomic 1035 * drivers, this is handled by the core atomic code, and drivers must 1036 * only take &drm_crtc_state.active into account. 1037 */ 1038 int dpms; 1039 1040 /** @helper_private: mid-layer private data */ 1041 const struct drm_connector_helper_funcs *helper_private; 1042 1043 /** @cmdline_mode: mode line parsed from the kernel cmdline for this connector */ 1044 struct drm_cmdline_mode cmdline_mode; 1045 /** @force: a DRM_FORCE_<foo> state for forced mode sets */ 1046 enum drm_connector_force force; 1047 /** @override_edid: has the EDID been overwritten through debugfs for testing? */ 1048 bool override_edid; 1049 1050 #define DRM_CONNECTOR_MAX_ENCODER 3 1051 /** 1052 * @encoder_ids: Valid encoders for this connector. Please only use 1053 * drm_connector_for_each_possible_encoder() to enumerate these. 1054 */ 1055 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; 1056 1057 /** 1058 * @encoder: Currently bound encoder driving this connector, if any. 1059 * Only really meaningful for non-atomic drivers. Atomic drivers should 1060 * instead look at &drm_connector_state.best_encoder, and in case they 1061 * need the CRTC driving this output, &drm_connector_state.crtc. 1062 */ 1063 struct drm_encoder *encoder; 1064 1065 #define MAX_ELD_BYTES 128 1066 /** @eld: EDID-like data, if present */ 1067 uint8_t eld[MAX_ELD_BYTES]; 1068 /** @latency_present: AV delay info from ELD, if found */ 1069 bool latency_present[2]; 1070 /** 1071 * @video_latency: Video latency info from ELD, if found. 1072 * [0]: progressive, [1]: interlaced 1073 */ 1074 int video_latency[2]; 1075 /** 1076 * @audio_latency: audio latency info from ELD, if found 1077 * [0]: progressive, [1]: interlaced 1078 */ 1079 int audio_latency[2]; 1080 /** 1081 * @null_edid_counter: track sinks that give us all zeros for the EDID. 1082 * Needed to workaround some HW bugs where we get all 0s 1083 */ 1084 int null_edid_counter; 1085 1086 /** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */ 1087 unsigned bad_edid_counter; 1088 1089 /** 1090 * @edid_corrupt: Indicates whether the last read EDID was corrupt. Used 1091 * in Displayport compliance testing - Displayport Link CTS Core 1.2 1092 * rev1.1 4.2.2.6 1093 */ 1094 bool edid_corrupt; 1095 1096 /** @debugfs_entry: debugfs directory for this connector */ 1097 struct dentry *debugfs_entry; 1098 1099 /** 1100 * @state: 1101 * 1102 * Current atomic state for this connector. 1103 * 1104 * This is protected by &drm_mode_config.connection_mutex. Note that 1105 * nonblocking atomic commits access the current connector state without 1106 * taking locks. Either by going through the &struct drm_atomic_state 1107 * pointers, see for_each_oldnew_connector_in_state(), 1108 * for_each_old_connector_in_state() and 1109 * for_each_new_connector_in_state(). Or through careful ordering of 1110 * atomic commit operations as implemented in the atomic helpers, see 1111 * &struct drm_crtc_commit. 1112 */ 1113 struct drm_connector_state *state; 1114 1115 /* DisplayID bits. FIXME: Extract into a substruct? */ 1116 1117 /** 1118 * @tile_blob_ptr: 1119 * 1120 * DRM blob property data for the tile property (used mostly by DP MST). 1121 * This is meant for screens which are driven through separate display 1122 * pipelines represented by &drm_crtc, which might not be running with 1123 * genlocked clocks. For tiled panels which are genlocked, like 1124 * dual-link LVDS or dual-link DSI, the driver should try to not expose 1125 * the tiling and virtualize both &drm_crtc and &drm_plane if needed. 1126 * 1127 * This should only be updated by calling 1128 * drm_connector_set_tile_property(). 1129 */ 1130 struct drm_property_blob *tile_blob_ptr; 1131 1132 /** @has_tile: is this connector connected to a tiled monitor */ 1133 bool has_tile; 1134 /** @tile_group: tile group for the connected monitor */ 1135 struct drm_tile_group *tile_group; 1136 /** @tile_is_single_monitor: whether the tile is one monitor housing */ 1137 bool tile_is_single_monitor; 1138 1139 /** @num_h_tile: number of horizontal tiles in the tile group */ 1140 /** @num_v_tile: number of vertical tiles in the tile group */ 1141 uint8_t num_h_tile, num_v_tile; 1142 /** @tile_h_loc: horizontal location of this tile */ 1143 /** @tile_v_loc: vertical location of this tile */ 1144 uint8_t tile_h_loc, tile_v_loc; 1145 /** @tile_h_size: horizontal size of this tile. */ 1146 /** @tile_v_size: vertical size of this tile. */ 1147 uint16_t tile_h_size, tile_v_size; 1148 1149 /** 1150 * @free_node: 1151 * 1152 * List used only by &drm_connector_list_iter to be able to clean up a 1153 * connector from any context, in conjunction with 1154 * &drm_mode_config.connector_free_work. 1155 */ 1156 struct llist_node free_node; 1157 }; 1158 1159 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 1160 1161 int drm_connector_init(struct drm_device *dev, 1162 struct drm_connector *connector, 1163 const struct drm_connector_funcs *funcs, 1164 int connector_type); 1165 void drm_connector_attach_edid_property(struct drm_connector *connector); 1166 int drm_connector_register(struct drm_connector *connector); 1167 void drm_connector_unregister(struct drm_connector *connector); 1168 int drm_connector_attach_encoder(struct drm_connector *connector, 1169 struct drm_encoder *encoder); 1170 1171 void drm_connector_cleanup(struct drm_connector *connector); 1172 1173 static inline unsigned int drm_connector_index(const struct drm_connector *connector) 1174 { 1175 return connector->index; 1176 } 1177 1178 static inline u32 drm_connector_mask(const struct drm_connector *connector) 1179 { 1180 return 1 << connector->index; 1181 } 1182 1183 /** 1184 * drm_connector_lookup - lookup connector object 1185 * @dev: DRM device 1186 * @file_priv: drm file to check for lease against. 1187 * @id: connector object id 1188 * 1189 * This function looks up the connector object specified by id 1190 * add takes a reference to it. 1191 */ 1192 static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, 1193 struct drm_file *file_priv, 1194 uint32_t id) 1195 { 1196 struct drm_mode_object *mo; 1197 mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CONNECTOR); 1198 return mo ? obj_to_connector(mo) : NULL; 1199 } 1200 1201 /** 1202 * drm_connector_get - acquire a connector reference 1203 * @connector: DRM connector 1204 * 1205 * This function increments the connector's refcount. 1206 */ 1207 static inline void drm_connector_get(struct drm_connector *connector) 1208 { 1209 drm_mode_object_get(&connector->base); 1210 } 1211 1212 /** 1213 * drm_connector_put - release a connector reference 1214 * @connector: DRM connector 1215 * 1216 * This function decrements the connector's reference count and frees the 1217 * object if the reference count drops to zero. 1218 */ 1219 static inline void drm_connector_put(struct drm_connector *connector) 1220 { 1221 drm_mode_object_put(&connector->base); 1222 } 1223 1224 /** 1225 * drm_connector_is_unregistered - has the connector been unregistered from 1226 * userspace? 1227 * @connector: DRM connector 1228 * 1229 * Checks whether or not @connector has been unregistered from userspace. 1230 * 1231 * Returns: 1232 * True if the connector was unregistered, false if the connector is 1233 * registered or has not yet been registered with userspace. 1234 */ 1235 static inline bool 1236 drm_connector_is_unregistered(struct drm_connector *connector) 1237 { 1238 return READ_ONCE(connector->registration_state) == 1239 DRM_CONNECTOR_UNREGISTERED; 1240 } 1241 1242 const char *drm_get_connector_status_name(enum drm_connector_status status); 1243 const char *drm_get_subpixel_order_name(enum subpixel_order order); 1244 const char *drm_get_dpms_name(int val); 1245 const char *drm_get_dvi_i_subconnector_name(int val); 1246 const char *drm_get_dvi_i_select_name(int val); 1247 const char *drm_get_tv_subconnector_name(int val); 1248 const char *drm_get_tv_select_name(int val); 1249 const char *drm_get_content_protection_name(int val); 1250 1251 int drm_mode_create_dvi_i_properties(struct drm_device *dev); 1252 int drm_mode_create_tv_properties(struct drm_device *dev, 1253 unsigned int num_modes, 1254 const char * const modes[]); 1255 int drm_mode_create_scaling_mode_property(struct drm_device *dev); 1256 int drm_connector_attach_content_type_property(struct drm_connector *dev); 1257 int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, 1258 u32 scaling_mode_mask); 1259 int drm_connector_attach_vrr_capable_property( 1260 struct drm_connector *connector); 1261 int drm_connector_attach_content_protection_property( 1262 struct drm_connector *connector); 1263 int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 1264 int drm_mode_create_content_type_property(struct drm_device *dev); 1265 void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, 1266 const struct drm_connector_state *conn_state); 1267 1268 int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 1269 1270 int drm_connector_set_path_property(struct drm_connector *connector, 1271 const char *path); 1272 int drm_connector_set_tile_property(struct drm_connector *connector); 1273 int drm_connector_update_edid_property(struct drm_connector *connector, 1274 const struct edid *edid); 1275 void drm_connector_set_link_status_property(struct drm_connector *connector, 1276 uint64_t link_status); 1277 void drm_connector_set_vrr_capable_property( 1278 struct drm_connector *connector, bool capable); 1279 int drm_connector_init_panel_orientation_property( 1280 struct drm_connector *connector, int width, int height); 1281 int drm_connector_attach_max_bpc_property(struct drm_connector *connector, 1282 int min, int max); 1283 1284 /** 1285 * struct drm_tile_group - Tile group metadata 1286 * @refcount: reference count 1287 * @dev: DRM device 1288 * @id: tile group id exposed to userspace 1289 * @group_data: Sink-private data identifying this group 1290 * 1291 * @group_data corresponds to displayid vend/prod/serial for external screens 1292 * with an EDID. 1293 */ 1294 struct drm_tile_group { 1295 struct kref refcount; 1296 struct drm_device *dev; 1297 int id; 1298 u8 group_data[8]; 1299 }; 1300 1301 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 1302 char topology[8]); 1303 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 1304 char topology[8]); 1305 void drm_mode_put_tile_group(struct drm_device *dev, 1306 struct drm_tile_group *tg); 1307 1308 /** 1309 * struct drm_connector_list_iter - connector_list iterator 1310 * 1311 * This iterator tracks state needed to be able to walk the connector_list 1312 * within struct drm_mode_config. Only use together with 1313 * drm_connector_list_iter_begin(), drm_connector_list_iter_end() and 1314 * drm_connector_list_iter_next() respectively the convenience macro 1315 * drm_for_each_connector_iter(). 1316 */ 1317 struct drm_connector_list_iter { 1318 /* private: */ 1319 struct drm_device *dev; 1320 struct drm_connector *conn; 1321 }; 1322 1323 void drm_connector_list_iter_begin(struct drm_device *dev, 1324 struct drm_connector_list_iter *iter); 1325 struct drm_connector * 1326 drm_connector_list_iter_next(struct drm_connector_list_iter *iter); 1327 void drm_connector_list_iter_end(struct drm_connector_list_iter *iter); 1328 1329 bool drm_connector_has_possible_encoder(struct drm_connector *connector, 1330 struct drm_encoder *encoder); 1331 1332 /** 1333 * drm_for_each_connector_iter - connector_list iterator macro 1334 * @connector: &struct drm_connector pointer used as cursor 1335 * @iter: &struct drm_connector_list_iter 1336 * 1337 * Note that @connector is only valid within the list body, if you want to use 1338 * @connector after calling drm_connector_list_iter_end() then you need to grab 1339 * your own reference first using drm_connector_get(). 1340 */ 1341 #define drm_for_each_connector_iter(connector, iter) \ 1342 while ((connector = drm_connector_list_iter_next(iter))) 1343 1344 /** 1345 * drm_connector_for_each_possible_encoder - iterate connector's possible encoders 1346 * @connector: &struct drm_connector pointer 1347 * @encoder: &struct drm_encoder pointer used as cursor 1348 * @__i: int iteration cursor, for macro-internal use 1349 */ 1350 #define drm_connector_for_each_possible_encoder(connector, encoder, __i) \ 1351 for ((__i) = 0; (__i) < ARRAY_SIZE((connector)->encoder_ids) && \ 1352 (connector)->encoder_ids[(__i)] != 0; (__i)++) \ 1353 for_each_if((encoder) = \ 1354 drm_encoder_find((connector)->dev, NULL, \ 1355 (connector)->encoder_ids[(__i)])) \ 1356 1357 #endif 1358