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 <linux/notifier.h> 31 #include <drm/drm_mode_object.h> 32 #include <drm/drm_util.h> 33 34 #include <uapi/drm/drm_mode.h> 35 36 struct drm_connector_helper_funcs; 37 struct drm_modeset_acquire_ctx; 38 struct drm_device; 39 struct drm_crtc; 40 struct drm_encoder; 41 struct drm_panel; 42 struct drm_property; 43 struct drm_property_blob; 44 struct drm_printer; 45 struct drm_privacy_screen; 46 struct edid; 47 struct i2c_adapter; 48 49 enum drm_connector_force { 50 DRM_FORCE_UNSPECIFIED, 51 DRM_FORCE_OFF, 52 DRM_FORCE_ON, /* force on analog part normally */ 53 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 54 }; 55 56 /** 57 * enum drm_connector_status - status for a &drm_connector 58 * 59 * This enum is used to track the connector status. There are no separate 60 * #defines for the uapi! 61 */ 62 enum drm_connector_status { 63 /** 64 * @connector_status_connected: The connector is definitely connected to 65 * a sink device, and can be enabled. 66 */ 67 connector_status_connected = 1, 68 /** 69 * @connector_status_disconnected: The connector isn't connected to a 70 * sink device which can be autodetect. For digital outputs like DP or 71 * HDMI (which can be realiable probed) this means there's really 72 * nothing there. It is driver-dependent whether a connector with this 73 * status can be lit up or not. 74 */ 75 connector_status_disconnected = 2, 76 /** 77 * @connector_status_unknown: The connector's status could not be 78 * reliably detected. This happens when probing would either cause 79 * flicker (like load-detection when the connector is in use), or when a 80 * hardware resource isn't available (like when load-detection needs a 81 * free CRTC). It should be possible to light up the connector with one 82 * of the listed fallback modes. For default configuration userspace 83 * should only try to light up connectors with unknown status when 84 * there's not connector with @connector_status_connected. 85 */ 86 connector_status_unknown = 3, 87 }; 88 89 /** 90 * enum drm_connector_registration_state - userspace registration status for 91 * a &drm_connector 92 * 93 * This enum is used to track the status of initializing a connector and 94 * registering it with userspace, so that DRM can prevent bogus modesets on 95 * connectors that no longer exist. 96 */ 97 enum drm_connector_registration_state { 98 /** 99 * @DRM_CONNECTOR_INITIALIZING: The connector has just been created, 100 * but has yet to be exposed to userspace. There should be no 101 * additional restrictions to how the state of this connector may be 102 * modified. 103 */ 104 DRM_CONNECTOR_INITIALIZING = 0, 105 106 /** 107 * @DRM_CONNECTOR_REGISTERED: The connector has been fully initialized 108 * and registered with sysfs, as such it has been exposed to 109 * userspace. There should be no additional restrictions to how the 110 * state of this connector may be modified. 111 */ 112 DRM_CONNECTOR_REGISTERED = 1, 113 114 /** 115 * @DRM_CONNECTOR_UNREGISTERED: The connector has either been exposed 116 * to userspace and has since been unregistered and removed from 117 * userspace, or the connector was unregistered before it had a chance 118 * to be exposed to userspace (e.g. still in the 119 * @DRM_CONNECTOR_INITIALIZING state). When a connector is 120 * unregistered, there are additional restrictions to how its state 121 * may be modified: 122 * 123 * - An unregistered connector may only have its DPMS changed from 124 * On->Off. Once DPMS is changed to Off, it may not be switched back 125 * to On. 126 * - Modesets are not allowed on unregistered connectors, unless they 127 * would result in disabling its assigned CRTCs. This means 128 * disabling a CRTC on an unregistered connector is OK, but enabling 129 * one is not. 130 * - Removing a CRTC from an unregistered connector is OK, but new 131 * CRTCs may never be assigned to an unregistered connector. 132 */ 133 DRM_CONNECTOR_UNREGISTERED = 2, 134 }; 135 136 enum subpixel_order { 137 SubPixelUnknown = 0, 138 SubPixelHorizontalRGB, 139 SubPixelHorizontalBGR, 140 SubPixelVerticalRGB, 141 SubPixelVerticalBGR, 142 SubPixelNone, 143 144 }; 145 146 /** 147 * enum drm_connector_tv_mode - Analog TV output mode 148 * 149 * This enum is used to indicate the TV output mode used on an analog TV 150 * connector. 151 * 152 * WARNING: The values of this enum is uABI since they're exposed in the 153 * "TV mode" connector property. 154 */ 155 enum drm_connector_tv_mode { 156 /** 157 * @DRM_MODE_TV_MODE_NTSC: CCIR System M (aka 525-lines) 158 * together with the NTSC Color Encoding. 159 */ 160 DRM_MODE_TV_MODE_NTSC, 161 162 /** 163 * @DRM_MODE_TV_MODE_NTSC_443: Variant of 164 * @DRM_MODE_TV_MODE_NTSC. Uses a color subcarrier frequency 165 * of 4.43 MHz. 166 */ 167 DRM_MODE_TV_MODE_NTSC_443, 168 169 /** 170 * @DRM_MODE_TV_MODE_NTSC_J: Variant of @DRM_MODE_TV_MODE_NTSC 171 * used in Japan. Uses a black level equals to the blanking 172 * level. 173 */ 174 DRM_MODE_TV_MODE_NTSC_J, 175 176 /** 177 * @DRM_MODE_TV_MODE_PAL: CCIR System B together with the PAL 178 * color system. 179 */ 180 DRM_MODE_TV_MODE_PAL, 181 182 /** 183 * @DRM_MODE_TV_MODE_PAL_M: CCIR System M (aka 525-lines) 184 * together with the PAL color encoding 185 */ 186 DRM_MODE_TV_MODE_PAL_M, 187 188 /** 189 * @DRM_MODE_TV_MODE_PAL_N: CCIR System N together with the PAL 190 * color encoding. It uses 625 lines, but has a color subcarrier 191 * frequency of 3.58MHz, the SECAM color space, and narrower 192 * channels compared to most of the other PAL variants. 193 */ 194 DRM_MODE_TV_MODE_PAL_N, 195 196 /** 197 * @DRM_MODE_TV_MODE_SECAM: CCIR System B together with the 198 * SECAM color system. 199 */ 200 DRM_MODE_TV_MODE_SECAM, 201 202 /** 203 * @DRM_MODE_TV_MODE_MAX: Number of analog TV output modes. 204 * 205 * Internal implementation detail; this is not uABI. 206 */ 207 DRM_MODE_TV_MODE_MAX, 208 }; 209 210 /** 211 * struct drm_scrambling: sink's scrambling support. 212 */ 213 struct drm_scrambling { 214 /** 215 * @supported: scrambling supported for rates > 340 Mhz. 216 */ 217 bool supported; 218 /** 219 * @low_rates: scrambling supported for rates <= 340 Mhz. 220 */ 221 bool low_rates; 222 }; 223 224 /* 225 * struct drm_scdc - Information about scdc capabilities of a HDMI 2.0 sink 226 * 227 * Provides SCDC register support and capabilities related information on a 228 * HDMI 2.0 sink. In case of a HDMI 1.4 sink, all parameter must be 0. 229 */ 230 struct drm_scdc { 231 /** 232 * @supported: status control & data channel present. 233 */ 234 bool supported; 235 /** 236 * @read_request: sink is capable of generating scdc read request. 237 */ 238 bool read_request; 239 /** 240 * @scrambling: sink's scrambling capabilities 241 */ 242 struct drm_scrambling scrambling; 243 }; 244 245 /** 246 * struct drm_hdmi_dsc_cap - DSC capabilities of HDMI sink 247 * 248 * Describes the DSC support provided by HDMI 2.1 sink. 249 * The information is fetched fom additional HFVSDB blocks defined 250 * for HDMI 2.1. 251 */ 252 struct drm_hdmi_dsc_cap { 253 /** @v_1p2: flag for dsc1.2 version support by sink */ 254 bool v_1p2; 255 256 /** @native_420: Does sink support DSC with 4:2:0 compression */ 257 bool native_420; 258 259 /** 260 * @all_bpp: Does sink support all bpp with 4:4:4: or 4:2:2 261 * compressed formats 262 */ 263 bool all_bpp; 264 265 /** 266 * @bpc_supported: compressed bpc supported by sink : 10, 12 or 16 bpc 267 */ 268 u8 bpc_supported; 269 270 /** @max_slices: maximum number of Horizontal slices supported by */ 271 u8 max_slices; 272 273 /** @clk_per_slice : max pixel clock in MHz supported per slice */ 274 int clk_per_slice; 275 276 /** @max_lanes : dsc max lanes supported for Fixed rate Link training */ 277 u8 max_lanes; 278 279 /** @max_frl_rate_per_lane : maximum frl rate with DSC per lane */ 280 u8 max_frl_rate_per_lane; 281 282 /** @total_chunk_kbytes: max size of chunks in KBs supported per line*/ 283 u8 total_chunk_kbytes; 284 }; 285 286 /** 287 * struct drm_hdmi_info - runtime information about the connected HDMI sink 288 * 289 * Describes if a given display supports advanced HDMI 2.0 features. 290 * This information is available in CEA-861-F extension blocks (like HF-VSDB). 291 */ 292 struct drm_hdmi_info { 293 /** @scdc: sink's scdc support and capabilities */ 294 struct drm_scdc scdc; 295 296 /** 297 * @y420_vdb_modes: bitmap of modes which can support ycbcr420 298 * output only (not normal RGB/YCBCR444/422 outputs). The max VIC 299 * defined by the CEA-861-G spec is 219, so the size is 256 bits to map 300 * up to 256 VICs. 301 */ 302 unsigned long y420_vdb_modes[BITS_TO_LONGS(256)]; 303 304 /** 305 * @y420_cmdb_modes: bitmap of modes which can support ycbcr420 306 * output also, along with normal HDMI outputs. The max VIC defined by 307 * the CEA-861-G spec is 219, so the size is 256 bits to map up to 256 308 * VICs. 309 */ 310 unsigned long y420_cmdb_modes[BITS_TO_LONGS(256)]; 311 312 /** @y420_dc_modes: bitmap of deep color support index */ 313 u8 y420_dc_modes; 314 315 /** @max_frl_rate_per_lane: support fixed rate link */ 316 u8 max_frl_rate_per_lane; 317 318 /** @max_lanes: supported by sink */ 319 u8 max_lanes; 320 321 /** @dsc_cap: DSC capabilities of the sink */ 322 struct drm_hdmi_dsc_cap dsc_cap; 323 }; 324 325 /** 326 * enum drm_link_status - connector's link_status property value 327 * 328 * This enum is used as the connector's link status property value. 329 * It is set to the values defined in uapi. 330 * 331 * @DRM_LINK_STATUS_GOOD: DP Link is Good as a result of successful 332 * link training 333 * @DRM_LINK_STATUS_BAD: DP Link is BAD as a result of link training 334 * failure 335 */ 336 enum drm_link_status { 337 DRM_LINK_STATUS_GOOD = DRM_MODE_LINK_STATUS_GOOD, 338 DRM_LINK_STATUS_BAD = DRM_MODE_LINK_STATUS_BAD, 339 }; 340 341 /** 342 * enum drm_panel_orientation - panel_orientation info for &drm_display_info 343 * 344 * This enum is used to track the (LCD) panel orientation. There are no 345 * separate #defines for the uapi! 346 * 347 * @DRM_MODE_PANEL_ORIENTATION_UNKNOWN: The drm driver has not provided any 348 * panel orientation information (normal 349 * for non panels) in this case the "panel 350 * orientation" connector prop will not be 351 * attached. 352 * @DRM_MODE_PANEL_ORIENTATION_NORMAL: The top side of the panel matches the 353 * top side of the device's casing. 354 * @DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: The top side of the panel matches the 355 * bottom side of the device's casing, iow 356 * the panel is mounted upside-down. 357 * @DRM_MODE_PANEL_ORIENTATION_LEFT_UP: The left side of the panel matches the 358 * top side of the device's casing. 359 * @DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: The right side of the panel matches the 360 * top side of the device's casing. 361 */ 362 enum drm_panel_orientation { 363 DRM_MODE_PANEL_ORIENTATION_UNKNOWN = -1, 364 DRM_MODE_PANEL_ORIENTATION_NORMAL = 0, 365 DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, 366 DRM_MODE_PANEL_ORIENTATION_LEFT_UP, 367 DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 368 }; 369 370 /** 371 * struct drm_monitor_range_info - Panel's Monitor range in EDID for 372 * &drm_display_info 373 * 374 * This struct is used to store a frequency range supported by panel 375 * as parsed from EDID's detailed monitor range descriptor block. 376 * 377 * @min_vfreq: This is the min supported refresh rate in Hz from 378 * EDID's detailed monitor range. 379 * @max_vfreq: This is the max supported refresh rate in Hz from 380 * EDID's detailed monitor range 381 */ 382 struct drm_monitor_range_info { 383 u16 min_vfreq; 384 u16 max_vfreq; 385 }; 386 387 /** 388 * struct drm_luminance_range_info - Panel's luminance range for 389 * &drm_display_info. Calculated using data in EDID 390 * 391 * This struct is used to store a luminance range supported by panel 392 * as calculated using data from EDID's static hdr metadata. 393 * 394 * @min_luminance: This is the min supported luminance value 395 * 396 * @max_luminance: This is the max supported luminance value 397 */ 398 struct drm_luminance_range_info { 399 u32 min_luminance; 400 u32 max_luminance; 401 }; 402 403 /** 404 * enum drm_privacy_screen_status - privacy screen status 405 * 406 * This enum is used to track and control the state of the integrated privacy 407 * screen present on some display panels, via the "privacy-screen sw-state" 408 * and "privacy-screen hw-state" properties. Note the _LOCKED enum values 409 * are only valid for the "privacy-screen hw-state" property. 410 * 411 * @PRIVACY_SCREEN_DISABLED: 412 * The privacy-screen on the panel is disabled 413 * @PRIVACY_SCREEN_ENABLED: 414 * The privacy-screen on the panel is enabled 415 * @PRIVACY_SCREEN_DISABLED_LOCKED: 416 * The privacy-screen on the panel is disabled and locked (cannot be changed) 417 * @PRIVACY_SCREEN_ENABLED_LOCKED: 418 * The privacy-screen on the panel is enabled and locked (cannot be changed) 419 */ 420 enum drm_privacy_screen_status { 421 PRIVACY_SCREEN_DISABLED = 0, 422 PRIVACY_SCREEN_ENABLED, 423 PRIVACY_SCREEN_DISABLED_LOCKED, 424 PRIVACY_SCREEN_ENABLED_LOCKED, 425 }; 426 427 /* 428 * This is a consolidated colorimetry list supported by HDMI and 429 * DP protocol standard. The respective connectors will register 430 * a property with the subset of this list (supported by that 431 * respective protocol). Userspace will set the colorspace through 432 * a colorspace property which will be created and exposed to 433 * userspace. 434 */ 435 436 /* For Default case, driver will set the colorspace */ 437 #define DRM_MODE_COLORIMETRY_DEFAULT 0 438 /* CEA 861 Normal Colorimetry options */ 439 #define DRM_MODE_COLORIMETRY_NO_DATA 0 440 #define DRM_MODE_COLORIMETRY_SMPTE_170M_YCC 1 441 #define DRM_MODE_COLORIMETRY_BT709_YCC 2 442 /* CEA 861 Extended Colorimetry Options */ 443 #define DRM_MODE_COLORIMETRY_XVYCC_601 3 444 #define DRM_MODE_COLORIMETRY_XVYCC_709 4 445 #define DRM_MODE_COLORIMETRY_SYCC_601 5 446 #define DRM_MODE_COLORIMETRY_OPYCC_601 6 447 #define DRM_MODE_COLORIMETRY_OPRGB 7 448 #define DRM_MODE_COLORIMETRY_BT2020_CYCC 8 449 #define DRM_MODE_COLORIMETRY_BT2020_RGB 9 450 #define DRM_MODE_COLORIMETRY_BT2020_YCC 10 451 /* Additional Colorimetry extension added as part of CTA 861.G */ 452 #define DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65 11 453 #define DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER 12 454 /* Additional Colorimetry Options added for DP 1.4a VSC Colorimetry Format */ 455 #define DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED 13 456 #define DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT 14 457 #define DRM_MODE_COLORIMETRY_BT601_YCC 15 458 459 /** 460 * enum drm_bus_flags - bus_flags info for &drm_display_info 461 * 462 * This enum defines signal polarities and clock edge information for signals on 463 * a bus as bitmask flags. 464 * 465 * The clock edge information is conveyed by two sets of symbols, 466 * DRM_BUS_FLAGS_*_DRIVE_\* and DRM_BUS_FLAGS_*_SAMPLE_\*. When this enum is 467 * used to describe a bus from the point of view of the transmitter, the 468 * \*_DRIVE_\* flags should be used. When used from the point of view of the 469 * receiver, the \*_SAMPLE_\* flags should be used. The \*_DRIVE_\* and 470 * \*_SAMPLE_\* flags alias each other, with the \*_SAMPLE_POSEDGE and 471 * \*_SAMPLE_NEGEDGE flags being equal to \*_DRIVE_NEGEDGE and \*_DRIVE_POSEDGE 472 * respectively. This simplifies code as signals are usually sampled on the 473 * opposite edge of the driving edge. Transmitters and receivers may however 474 * need to take other signal timings into account to convert between driving 475 * and sample edges. 476 */ 477 enum drm_bus_flags { 478 /** 479 * @DRM_BUS_FLAG_DE_LOW: 480 * 481 * The Data Enable signal is active low 482 */ 483 DRM_BUS_FLAG_DE_LOW = BIT(0), 484 485 /** 486 * @DRM_BUS_FLAG_DE_HIGH: 487 * 488 * The Data Enable signal is active high 489 */ 490 DRM_BUS_FLAG_DE_HIGH = BIT(1), 491 492 /** 493 * @DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE: 494 * 495 * Data is driven on the rising edge of the pixel clock 496 */ 497 DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE = BIT(2), 498 499 /** 500 * @DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE: 501 * 502 * Data is driven on the falling edge of the pixel clock 503 */ 504 DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE = BIT(3), 505 506 /** 507 * @DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE: 508 * 509 * Data is sampled on the rising edge of the pixel clock 510 */ 511 DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE, 512 513 /** 514 * @DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE: 515 * 516 * Data is sampled on the falling edge of the pixel clock 517 */ 518 DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE, 519 520 /** 521 * @DRM_BUS_FLAG_DATA_MSB_TO_LSB: 522 * 523 * Data is transmitted MSB to LSB on the bus 524 */ 525 DRM_BUS_FLAG_DATA_MSB_TO_LSB = BIT(4), 526 527 /** 528 * @DRM_BUS_FLAG_DATA_LSB_TO_MSB: 529 * 530 * Data is transmitted LSB to MSB on the bus 531 */ 532 DRM_BUS_FLAG_DATA_LSB_TO_MSB = BIT(5), 533 534 /** 535 * @DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE: 536 * 537 * Sync signals are driven on the rising edge of the pixel clock 538 */ 539 DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE = BIT(6), 540 541 /** 542 * @DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE: 543 * 544 * Sync signals are driven on the falling edge of the pixel clock 545 */ 546 DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE = BIT(7), 547 548 /** 549 * @DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE: 550 * 551 * Sync signals are sampled on the rising edge of the pixel clock 552 */ 553 DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE = DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE, 554 555 /** 556 * @DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE: 557 * 558 * Sync signals are sampled on the falling edge of the pixel clock 559 */ 560 DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE = DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE, 561 562 /** 563 * @DRM_BUS_FLAG_SHARP_SIGNALS: 564 * 565 * Set if the Sharp-specific signals (SPL, CLS, PS, REV) must be used 566 */ 567 DRM_BUS_FLAG_SHARP_SIGNALS = BIT(8), 568 }; 569 570 /** 571 * struct drm_display_info - runtime data about the connected sink 572 * 573 * Describes a given display (e.g. CRT or flat panel) and its limitations. For 574 * fixed display sinks like built-in panels there's not much difference between 575 * this and &struct drm_connector. But for sinks with a real cable this 576 * structure is meant to describe all the things at the other end of the cable. 577 * 578 * For sinks which provide an EDID this can be filled out by calling 579 * drm_add_edid_modes(). 580 */ 581 struct drm_display_info { 582 /** 583 * @width_mm: Physical width in mm. 584 */ 585 unsigned int width_mm; 586 587 /** 588 * @height_mm: Physical height in mm. 589 */ 590 unsigned int height_mm; 591 592 /** 593 * @bpc: Maximum bits per color channel. Used by HDMI and DP outputs. 594 */ 595 unsigned int bpc; 596 597 /** 598 * @subpixel_order: Subpixel order of LCD panels. 599 */ 600 enum subpixel_order subpixel_order; 601 602 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 603 #define DRM_COLOR_FORMAT_YCBCR444 (1<<1) 604 #define DRM_COLOR_FORMAT_YCBCR422 (1<<2) 605 #define DRM_COLOR_FORMAT_YCBCR420 (1<<3) 606 607 /** 608 * @panel_orientation: Read only connector property for built-in panels, 609 * indicating the orientation of the panel vs the device's casing. 610 * drm_connector_init() sets this to DRM_MODE_PANEL_ORIENTATION_UNKNOWN. 611 * When not UNKNOWN this gets used by the drm_fb_helpers to rotate the 612 * fb to compensate and gets exported as prop to userspace. 613 */ 614 int panel_orientation; 615 616 /** 617 * @color_formats: HDMI Color formats, selects between RGB and YCrCb 618 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones 619 * as used to describe the pixel format in framebuffers, and also don't 620 * match the formats in @bus_formats which are shared with v4l. 621 */ 622 u32 color_formats; 623 624 /** 625 * @bus_formats: Pixel data format on the wire, somewhat redundant with 626 * @color_formats. Array of size @num_bus_formats encoded using 627 * MEDIA_BUS_FMT\_ defines shared with v4l and media drivers. 628 */ 629 const u32 *bus_formats; 630 /** 631 * @num_bus_formats: Size of @bus_formats array. 632 */ 633 unsigned int num_bus_formats; 634 635 /** 636 * @bus_flags: Additional information (like pixel signal polarity) for 637 * the pixel data on the bus, using &enum drm_bus_flags values 638 * DRM_BUS_FLAGS\_. 639 */ 640 u32 bus_flags; 641 642 /** 643 * @max_tmds_clock: Maximum TMDS clock rate supported by the 644 * sink in kHz. 0 means undefined. 645 */ 646 int max_tmds_clock; 647 648 /** 649 * @dvi_dual: Dual-link DVI sink? 650 */ 651 bool dvi_dual; 652 653 /** 654 * @is_hdmi: True if the sink is an HDMI device. 655 * 656 * This field shall be used instead of calling 657 * drm_detect_hdmi_monitor() when possible. 658 */ 659 bool is_hdmi; 660 661 /** 662 * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? 663 */ 664 bool has_hdmi_infoframe; 665 666 /** 667 * @rgb_quant_range_selectable: Does the sink support selecting 668 * the RGB quantization range? 669 */ 670 bool rgb_quant_range_selectable; 671 672 /** 673 * @edid_hdmi_rgb444_dc_modes: Mask of supported hdmi deep color modes 674 * in RGB 4:4:4. Even more stuff redundant with @bus_formats. 675 */ 676 u8 edid_hdmi_rgb444_dc_modes; 677 678 /** 679 * @edid_hdmi_ycbcr444_dc_modes: Mask of supported hdmi deep color 680 * modes in YCbCr 4:4:4. Even more stuff redundant with @bus_formats. 681 */ 682 u8 edid_hdmi_ycbcr444_dc_modes; 683 684 /** 685 * @cea_rev: CEA revision of the HDMI sink. 686 */ 687 u8 cea_rev; 688 689 /** 690 * @hdmi: advance features of a HDMI sink. 691 */ 692 struct drm_hdmi_info hdmi; 693 694 /** 695 * @non_desktop: Non desktop display (HMD). 696 */ 697 bool non_desktop; 698 699 /** 700 * @monitor_range: Frequency range supported by monitor range descriptor 701 */ 702 struct drm_monitor_range_info monitor_range; 703 704 /** 705 * @luminance_range: Luminance range supported by panel 706 */ 707 struct drm_luminance_range_info luminance_range; 708 709 /** 710 * @mso_stream_count: eDP Multi-SST Operation (MSO) stream count from 711 * the DisplayID VESA vendor block. 0 for conventional Single-Stream 712 * Transport (SST), or 2 or 4 MSO streams. 713 */ 714 u8 mso_stream_count; 715 716 /** 717 * @mso_pixel_overlap: eDP MSO segment pixel overlap, 0-8 pixels. 718 */ 719 u8 mso_pixel_overlap; 720 721 /** 722 * @max_dsc_bpp: Maximum DSC target bitrate, if it is set to 0 the 723 * monitor's default value is used instead. 724 */ 725 u32 max_dsc_bpp; 726 727 /** 728 * @vics: Array of vics_len VICs. Internal to EDID parsing. 729 */ 730 u8 *vics; 731 732 /** 733 * @vics_len: Number of elements in vics. Internal to EDID parsing. 734 */ 735 int vics_len; 736 737 /** 738 * @quirks: EDID based quirks. Internal to EDID parsing. 739 */ 740 u32 quirks; 741 }; 742 743 int drm_display_info_set_bus_formats(struct drm_display_info *info, 744 const u32 *formats, 745 unsigned int num_formats); 746 747 /** 748 * struct drm_connector_tv_margins - TV connector related margins 749 * 750 * Describes the margins in pixels to put around the image on TV 751 * connectors to deal with overscan. 752 */ 753 struct drm_connector_tv_margins { 754 /** 755 * @bottom: Bottom margin in pixels. 756 */ 757 unsigned int bottom; 758 759 /** 760 * @left: Left margin in pixels. 761 */ 762 unsigned int left; 763 764 /** 765 * @right: Right margin in pixels. 766 */ 767 unsigned int right; 768 769 /** 770 * @top: Top margin in pixels. 771 */ 772 unsigned int top; 773 }; 774 775 /** 776 * struct drm_tv_connector_state - TV connector related states 777 * @select_subconnector: selected subconnector 778 * @subconnector: detected subconnector 779 * @margins: TV margins 780 * @legacy_mode: Legacy TV mode, driver specific value 781 * @mode: TV mode 782 * @brightness: brightness in percent 783 * @contrast: contrast in percent 784 * @flicker_reduction: flicker reduction in percent 785 * @overscan: overscan in percent 786 * @saturation: saturation in percent 787 * @hue: hue in percent 788 */ 789 struct drm_tv_connector_state { 790 enum drm_mode_subconnector select_subconnector; 791 enum drm_mode_subconnector subconnector; 792 struct drm_connector_tv_margins margins; 793 unsigned int legacy_mode; 794 unsigned int mode; 795 unsigned int brightness; 796 unsigned int contrast; 797 unsigned int flicker_reduction; 798 unsigned int overscan; 799 unsigned int saturation; 800 unsigned int hue; 801 }; 802 803 /** 804 * struct drm_connector_state - mutable connector state 805 */ 806 struct drm_connector_state { 807 /** @connector: backpointer to the connector */ 808 struct drm_connector *connector; 809 810 /** 811 * @crtc: CRTC to connect connector to, NULL if disabled. 812 * 813 * Do not change this directly, use drm_atomic_set_crtc_for_connector() 814 * instead. 815 */ 816 struct drm_crtc *crtc; 817 818 /** 819 * @best_encoder: 820 * 821 * Used by the atomic helpers to select the encoder, through the 822 * &drm_connector_helper_funcs.atomic_best_encoder or 823 * &drm_connector_helper_funcs.best_encoder callbacks. 824 * 825 * This is also used in the atomic helpers to map encoders to their 826 * current and previous connectors, see 827 * drm_atomic_get_old_connector_for_encoder() and 828 * drm_atomic_get_new_connector_for_encoder(). 829 * 830 * NOTE: Atomic drivers must fill this out (either themselves or through 831 * helpers), for otherwise the GETCONNECTOR and GETENCODER IOCTLs will 832 * not return correct data to userspace. 833 */ 834 struct drm_encoder *best_encoder; 835 836 /** 837 * @link_status: Connector link_status to keep track of whether link is 838 * GOOD or BAD to notify userspace if retraining is necessary. 839 */ 840 enum drm_link_status link_status; 841 842 /** @state: backpointer to global drm_atomic_state */ 843 struct drm_atomic_state *state; 844 845 /** 846 * @commit: Tracks the pending commit to prevent use-after-free conditions. 847 * 848 * Is only set when @crtc is NULL. 849 */ 850 struct drm_crtc_commit *commit; 851 852 /** @tv: TV connector state */ 853 struct drm_tv_connector_state tv; 854 855 /** 856 * @self_refresh_aware: 857 * 858 * This tracks whether a connector is aware of the self refresh state. 859 * It should be set to true for those connector implementations which 860 * understand the self refresh state. This is needed since the crtc 861 * registers the self refresh helpers and it doesn't know if the 862 * connectors downstream have implemented self refresh entry/exit. 863 * 864 * Drivers should set this to true in atomic_check if they know how to 865 * handle self_refresh requests. 866 */ 867 bool self_refresh_aware; 868 869 /** 870 * @picture_aspect_ratio: Connector property to control the 871 * HDMI infoframe aspect ratio setting. 872 * 873 * The %DRM_MODE_PICTURE_ASPECT_\* values much match the 874 * values for &enum hdmi_picture_aspect 875 */ 876 enum hdmi_picture_aspect picture_aspect_ratio; 877 878 /** 879 * @content_type: Connector property to control the 880 * HDMI infoframe content type setting. 881 * The %DRM_MODE_CONTENT_TYPE_\* values much 882 * match the values. 883 */ 884 unsigned int content_type; 885 886 /** 887 * @hdcp_content_type: Connector property to pass the type of 888 * protected content. This is most commonly used for HDCP. 889 */ 890 unsigned int hdcp_content_type; 891 892 /** 893 * @scaling_mode: Connector property to control the 894 * upscaling, mostly used for built-in panels. 895 */ 896 unsigned int scaling_mode; 897 898 /** 899 * @content_protection: Connector property to request content 900 * protection. This is most commonly used for HDCP. 901 */ 902 unsigned int content_protection; 903 904 /** 905 * @colorspace: State variable for Connector property to request 906 * colorspace change on Sink. This is most commonly used to switch 907 * to wider color gamuts like BT2020. 908 */ 909 u32 colorspace; 910 911 /** 912 * @writeback_job: Writeback job for writeback connectors 913 * 914 * Holds the framebuffer and out-fence for a writeback connector. As 915 * the writeback completion may be asynchronous to the normal commit 916 * cycle, the writeback job lifetime is managed separately from the 917 * normal atomic state by this object. 918 * 919 * See also: drm_writeback_queue_job() and 920 * drm_writeback_signal_completion() 921 */ 922 struct drm_writeback_job *writeback_job; 923 924 /** 925 * @max_requested_bpc: Connector property to limit the maximum bit 926 * depth of the pixels. 927 */ 928 u8 max_requested_bpc; 929 930 /** 931 * @max_bpc: Connector max_bpc based on the requested max_bpc property 932 * and the connector bpc limitations obtained from edid. 933 */ 934 u8 max_bpc; 935 936 /** 937 * @privacy_screen_sw_state: See :ref:`Standard Connector 938 * Properties<standard_connector_properties>` 939 */ 940 enum drm_privacy_screen_status privacy_screen_sw_state; 941 942 /** 943 * @hdr_output_metadata: 944 * DRM blob property for HDR output metadata 945 */ 946 struct drm_property_blob *hdr_output_metadata; 947 }; 948 949 /** 950 * struct drm_connector_funcs - control connectors on a given device 951 * 952 * Each CRTC may have one or more connectors attached to it. The functions 953 * below allow the core DRM code to control connectors, enumerate available modes, 954 * etc. 955 */ 956 struct drm_connector_funcs { 957 /** 958 * @dpms: 959 * 960 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS 961 * is exposed as a standard property on the connector, but diverted to 962 * this callback in the drm core. Note that atomic drivers don't 963 * implement the 4 level DPMS support on the connector any more, but 964 * instead only have an on/off "ACTIVE" property on the CRTC object. 965 * 966 * This hook is not used by atomic drivers, remapping of the legacy DPMS 967 * property is entirely handled in the DRM core. 968 * 969 * RETURNS: 970 * 971 * 0 on success or a negative error code on failure. 972 */ 973 int (*dpms)(struct drm_connector *connector, int mode); 974 975 /** 976 * @reset: 977 * 978 * Reset connector hardware and software state to off. This function isn't 979 * called by the core directly, only through drm_mode_config_reset(). 980 * It's not a helper hook only for historical reasons. 981 * 982 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset 983 * atomic state using this hook. 984 */ 985 void (*reset)(struct drm_connector *connector); 986 987 /** 988 * @detect: 989 * 990 * Check to see if anything is attached to the connector. The parameter 991 * force is set to false whilst polling, true when checking the 992 * connector due to a user request. force can be used by the driver to 993 * avoid expensive, destructive operations during automated probing. 994 * 995 * This callback is optional, if not implemented the connector will be 996 * considered as always being attached. 997 * 998 * FIXME: 999 * 1000 * Note that this hook is only called by the probe helper. It's not in 1001 * the helper library vtable purely for historical reasons. The only DRM 1002 * core entry point to probe connector state is @fill_modes. 1003 * 1004 * Note that the helper library will already hold 1005 * &drm_mode_config.connection_mutex. Drivers which need to grab additional 1006 * locks to avoid races with concurrent modeset changes need to use 1007 * &drm_connector_helper_funcs.detect_ctx instead. 1008 * 1009 * Also note that this callback can be called no matter the 1010 * state the connector is in. Drivers that need the underlying 1011 * device to be powered to perform the detection will first need 1012 * to make sure it's been properly enabled. 1013 * 1014 * RETURNS: 1015 * 1016 * drm_connector_status indicating the connector's status. 1017 */ 1018 enum drm_connector_status (*detect)(struct drm_connector *connector, 1019 bool force); 1020 1021 /** 1022 * @force: 1023 * 1024 * This function is called to update internal encoder state when the 1025 * connector is forced to a certain state by userspace, either through 1026 * the sysfs interfaces or on the kernel cmdline. In that case the 1027 * @detect callback isn't called. 1028 * 1029 * FIXME: 1030 * 1031 * Note that this hook is only called by the probe helper. It's not in 1032 * the helper library vtable purely for historical reasons. The only DRM 1033 * core entry point to probe connector state is @fill_modes. 1034 */ 1035 void (*force)(struct drm_connector *connector); 1036 1037 /** 1038 * @fill_modes: 1039 * 1040 * Entry point for output detection and basic mode validation. The 1041 * driver should reprobe the output if needed (e.g. when hotplug 1042 * handling is unreliable), add all detected modes to &drm_connector.modes 1043 * and filter out any the device can't support in any configuration. It 1044 * also needs to filter out any modes wider or higher than the 1045 * parameters max_width and max_height indicate. 1046 * 1047 * The drivers must also prune any modes no longer valid from 1048 * &drm_connector.modes. Furthermore it must update 1049 * &drm_connector.status and &drm_connector.edid. If no EDID has been 1050 * received for this output connector->edid must be NULL. 1051 * 1052 * Drivers using the probe helpers should use 1053 * drm_helper_probe_single_connector_modes() to implement this 1054 * function. 1055 * 1056 * RETURNS: 1057 * 1058 * The number of modes detected and filled into &drm_connector.modes. 1059 */ 1060 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 1061 1062 /** 1063 * @set_property: 1064 * 1065 * This is the legacy entry point to update a property attached to the 1066 * connector. 1067 * 1068 * This callback is optional if the driver does not support any legacy 1069 * driver-private properties. For atomic drivers it is not used because 1070 * property handling is done entirely in the DRM core. 1071 * 1072 * RETURNS: 1073 * 1074 * 0 on success or a negative error code on failure. 1075 */ 1076 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 1077 uint64_t val); 1078 1079 /** 1080 * @late_register: 1081 * 1082 * This optional hook can be used to register additional userspace 1083 * interfaces attached to the connector, light backlight control, i2c, 1084 * DP aux or similar interfaces. It is called late in the driver load 1085 * sequence from drm_connector_register() when registering all the 1086 * core drm connector interfaces. Everything added from this callback 1087 * should be unregistered in the early_unregister callback. 1088 * 1089 * This is called while holding &drm_connector.mutex. 1090 * 1091 * Returns: 1092 * 1093 * 0 on success, or a negative error code on failure. 1094 */ 1095 int (*late_register)(struct drm_connector *connector); 1096 1097 /** 1098 * @early_unregister: 1099 * 1100 * This optional hook should be used to unregister the additional 1101 * userspace interfaces attached to the connector from 1102 * late_register(). It is called from drm_connector_unregister(), 1103 * early in the driver unload sequence to disable userspace access 1104 * before data structures are torndown. 1105 * 1106 * This is called while holding &drm_connector.mutex. 1107 */ 1108 void (*early_unregister)(struct drm_connector *connector); 1109 1110 /** 1111 * @destroy: 1112 * 1113 * Clean up connector resources. This is called at driver unload time 1114 * through drm_mode_config_cleanup(). It can also be called at runtime 1115 * when a connector is being hot-unplugged for drivers that support 1116 * connector hotplugging (e.g. DisplayPort MST). 1117 */ 1118 void (*destroy)(struct drm_connector *connector); 1119 1120 /** 1121 * @atomic_duplicate_state: 1122 * 1123 * Duplicate the current atomic state for this connector and return it. 1124 * The core and helpers guarantee that any atomic state duplicated with 1125 * this hook and still owned by the caller (i.e. not transferred to the 1126 * driver by calling &drm_mode_config_funcs.atomic_commit) will be 1127 * cleaned up by calling the @atomic_destroy_state hook in this 1128 * structure. 1129 * 1130 * This callback is mandatory for atomic drivers. 1131 * 1132 * Atomic drivers which don't subclass &struct drm_connector_state should use 1133 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the 1134 * state structure to extend it with driver-private state should use 1135 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is 1136 * duplicated in a consistent fashion across drivers. 1137 * 1138 * It is an error to call this hook before &drm_connector.state has been 1139 * initialized correctly. 1140 * 1141 * NOTE: 1142 * 1143 * If the duplicate state references refcounted resources this hook must 1144 * acquire a reference for each of them. The driver must release these 1145 * references again in @atomic_destroy_state. 1146 * 1147 * RETURNS: 1148 * 1149 * Duplicated atomic state or NULL when the allocation failed. 1150 */ 1151 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 1152 1153 /** 1154 * @atomic_destroy_state: 1155 * 1156 * Destroy a state duplicated with @atomic_duplicate_state and release 1157 * or unreference all resources it references 1158 * 1159 * This callback is mandatory for atomic drivers. 1160 */ 1161 void (*atomic_destroy_state)(struct drm_connector *connector, 1162 struct drm_connector_state *state); 1163 1164 /** 1165 * @atomic_set_property: 1166 * 1167 * Decode a driver-private property value and store the decoded value 1168 * into the passed-in state structure. Since the atomic core decodes all 1169 * standardized properties (even for extensions beyond the core set of 1170 * properties which might not be implemented by all drivers) this 1171 * requires drivers to subclass the state structure. 1172 * 1173 * Such driver-private properties should really only be implemented for 1174 * truly hardware/vendor specific state. Instead it is preferred to 1175 * standardize atomic extension and decode the properties used to expose 1176 * such an extension in the core. 1177 * 1178 * Do not call this function directly, use 1179 * drm_atomic_connector_set_property() instead. 1180 * 1181 * This callback is optional if the driver does not support any 1182 * driver-private atomic properties. 1183 * 1184 * NOTE: 1185 * 1186 * This function is called in the state assembly phase of atomic 1187 * modesets, which can be aborted for any reason (including on 1188 * userspace's request to just check whether a configuration would be 1189 * possible). Drivers MUST NOT touch any persistent state (hardware or 1190 * software) or data structures except the passed in @state parameter. 1191 * 1192 * Also since userspace controls in which order properties are set this 1193 * function must not do any input validation (since the state update is 1194 * incomplete and hence likely inconsistent). Instead any such input 1195 * validation must be done in the various atomic_check callbacks. 1196 * 1197 * RETURNS: 1198 * 1199 * 0 if the property has been found, -EINVAL if the property isn't 1200 * implemented by the driver (which shouldn't ever happen, the core only 1201 * asks for properties attached to this connector). No other validation 1202 * is allowed by the driver. The core already checks that the property 1203 * value is within the range (integer, valid enum value, ...) the driver 1204 * set when registering the property. 1205 */ 1206 int (*atomic_set_property)(struct drm_connector *connector, 1207 struct drm_connector_state *state, 1208 struct drm_property *property, 1209 uint64_t val); 1210 1211 /** 1212 * @atomic_get_property: 1213 * 1214 * Reads out the decoded driver-private property. This is used to 1215 * implement the GETCONNECTOR IOCTL. 1216 * 1217 * Do not call this function directly, use 1218 * drm_atomic_connector_get_property() instead. 1219 * 1220 * This callback is optional if the driver does not support any 1221 * driver-private atomic properties. 1222 * 1223 * RETURNS: 1224 * 1225 * 0 on success, -EINVAL if the property isn't implemented by the 1226 * driver (which shouldn't ever happen, the core only asks for 1227 * properties attached to this connector). 1228 */ 1229 int (*atomic_get_property)(struct drm_connector *connector, 1230 const struct drm_connector_state *state, 1231 struct drm_property *property, 1232 uint64_t *val); 1233 1234 /** 1235 * @atomic_print_state: 1236 * 1237 * If driver subclasses &struct drm_connector_state, it should implement 1238 * this optional hook for printing additional driver specific state. 1239 * 1240 * Do not call this directly, use drm_atomic_connector_print_state() 1241 * instead. 1242 */ 1243 void (*atomic_print_state)(struct drm_printer *p, 1244 const struct drm_connector_state *state); 1245 1246 /** 1247 * @oob_hotplug_event: 1248 * 1249 * This will get called when a hotplug-event for a drm-connector 1250 * has been received from a source outside the display driver / device. 1251 */ 1252 void (*oob_hotplug_event)(struct drm_connector *connector); 1253 1254 /** 1255 * @debugfs_init: 1256 * 1257 * Allows connectors to create connector-specific debugfs files. 1258 */ 1259 void (*debugfs_init)(struct drm_connector *connector, struct dentry *root); 1260 }; 1261 1262 /** 1263 * struct drm_cmdline_mode - DRM Mode passed through the kernel command-line 1264 * 1265 * Each connector can have an initial mode with additional options 1266 * passed through the kernel command line. This structure allows to 1267 * express those parameters and will be filled by the command-line 1268 * parser. 1269 */ 1270 struct drm_cmdline_mode { 1271 /** 1272 * @name: 1273 * 1274 * Name of the mode. 1275 */ 1276 char name[DRM_DISPLAY_MODE_LEN]; 1277 1278 /** 1279 * @specified: 1280 * 1281 * Has a mode been read from the command-line? 1282 */ 1283 bool specified; 1284 1285 /** 1286 * @refresh_specified: 1287 * 1288 * Did the mode have a preferred refresh rate? 1289 */ 1290 bool refresh_specified; 1291 1292 /** 1293 * @bpp_specified: 1294 * 1295 * Did the mode have a preferred BPP? 1296 */ 1297 bool bpp_specified; 1298 1299 /** 1300 * @pixel_clock: 1301 * 1302 * Pixel Clock in kHz. Optional. 1303 */ 1304 unsigned int pixel_clock; 1305 1306 /** 1307 * @xres: 1308 * 1309 * Active resolution on the X axis, in pixels. 1310 */ 1311 int xres; 1312 1313 /** 1314 * @yres: 1315 * 1316 * Active resolution on the Y axis, in pixels. 1317 */ 1318 int yres; 1319 1320 /** 1321 * @bpp: 1322 * 1323 * Bits per pixels for the mode. 1324 */ 1325 int bpp; 1326 1327 /** 1328 * @refresh: 1329 * 1330 * Refresh rate, in Hertz. 1331 */ 1332 int refresh; 1333 1334 /** 1335 * @rb: 1336 * 1337 * Do we need to use reduced blanking? 1338 */ 1339 bool rb; 1340 1341 /** 1342 * @interlace: 1343 * 1344 * The mode is interlaced. 1345 */ 1346 bool interlace; 1347 1348 /** 1349 * @cvt: 1350 * 1351 * The timings will be calculated using the VESA Coordinated 1352 * Video Timings instead of looking up the mode from a table. 1353 */ 1354 bool cvt; 1355 1356 /** 1357 * @margins: 1358 * 1359 * Add margins to the mode calculation (1.8% of xres rounded 1360 * down to 8 pixels and 1.8% of yres). 1361 */ 1362 bool margins; 1363 1364 /** 1365 * @force: 1366 * 1367 * Ignore the hotplug state of the connector, and force its 1368 * state to one of the DRM_FORCE_* values. 1369 */ 1370 enum drm_connector_force force; 1371 1372 /** 1373 * @rotation_reflection: 1374 * 1375 * Initial rotation and reflection of the mode setup from the 1376 * command line. See DRM_MODE_ROTATE_* and 1377 * DRM_MODE_REFLECT_*. The only rotations supported are 1378 * DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180. 1379 */ 1380 unsigned int rotation_reflection; 1381 1382 /** 1383 * @panel_orientation: 1384 * 1385 * drm-connector "panel orientation" property override value, 1386 * DRM_MODE_PANEL_ORIENTATION_UNKNOWN if not set. 1387 */ 1388 enum drm_panel_orientation panel_orientation; 1389 1390 /** 1391 * @tv_margins: TV margins to apply to the mode. 1392 */ 1393 struct drm_connector_tv_margins tv_margins; 1394 1395 /** 1396 * @tv_mode: TV mode standard. See DRM_MODE_TV_MODE_*. 1397 */ 1398 enum drm_connector_tv_mode tv_mode; 1399 1400 /** 1401 * @tv_mode_specified: 1402 * 1403 * Did the mode have a preferred TV mode? 1404 */ 1405 bool tv_mode_specified; 1406 }; 1407 1408 /** 1409 * struct drm_connector - central DRM connector control structure 1410 * 1411 * Each connector may be connected to one or more CRTCs, or may be clonable by 1412 * another connector if they can share a CRTC. Each connector also has a specific 1413 * position in the broader display (referred to as a 'screen' though it could 1414 * span multiple monitors). 1415 */ 1416 struct drm_connector { 1417 /** @dev: parent DRM device */ 1418 struct drm_device *dev; 1419 /** @kdev: kernel device for sysfs attributes */ 1420 struct device *kdev; 1421 /** @attr: sysfs attributes */ 1422 struct device_attribute *attr; 1423 /** 1424 * @fwnode: associated fwnode supplied by platform firmware 1425 * 1426 * Drivers can set this to associate a fwnode with a connector, drivers 1427 * are expected to get a reference on the fwnode when setting this. 1428 * drm_connector_cleanup() will call fwnode_handle_put() on this. 1429 */ 1430 struct fwnode_handle *fwnode; 1431 1432 /** 1433 * @head: 1434 * 1435 * List of all connectors on a @dev, linked from 1436 * &drm_mode_config.connector_list. Protected by 1437 * &drm_mode_config.connector_list_lock, but please only use 1438 * &drm_connector_list_iter to walk this list. 1439 */ 1440 struct list_head head; 1441 1442 /** 1443 * @global_connector_list_entry: 1444 * 1445 * Connector entry in the global connector-list, used by 1446 * drm_connector_find_by_fwnode(). 1447 */ 1448 struct list_head global_connector_list_entry; 1449 1450 /** @base: base KMS object */ 1451 struct drm_mode_object base; 1452 1453 /** @name: human readable name, can be overwritten by the driver */ 1454 char *name; 1455 1456 /** 1457 * @mutex: Lock for general connector state, but currently only protects 1458 * @registered. Most of the connector state is still protected by 1459 * &drm_mode_config.mutex. 1460 */ 1461 struct mutex mutex; 1462 1463 /** 1464 * @index: Compacted connector index, which matches the position inside 1465 * the mode_config.list for drivers not supporting hot-add/removing. Can 1466 * be used as an array index. It is invariant over the lifetime of the 1467 * connector. 1468 */ 1469 unsigned index; 1470 1471 /** 1472 * @connector_type: 1473 * one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 1474 */ 1475 int connector_type; 1476 /** @connector_type_id: index into connector type enum */ 1477 int connector_type_id; 1478 /** 1479 * @interlace_allowed: 1480 * Can this connector handle interlaced modes? Only used by 1481 * drm_helper_probe_single_connector_modes() for mode filtering. 1482 */ 1483 bool interlace_allowed; 1484 /** 1485 * @doublescan_allowed: 1486 * Can this connector handle doublescan? Only used by 1487 * drm_helper_probe_single_connector_modes() for mode filtering. 1488 */ 1489 bool doublescan_allowed; 1490 /** 1491 * @stereo_allowed: 1492 * Can this connector handle stereo modes? Only used by 1493 * drm_helper_probe_single_connector_modes() for mode filtering. 1494 */ 1495 bool stereo_allowed; 1496 1497 /** 1498 * @ycbcr_420_allowed : This bool indicates if this connector is 1499 * capable of handling YCBCR 420 output. While parsing the EDID 1500 * blocks it's very helpful to know if the source is capable of 1501 * handling YCBCR 420 outputs. 1502 */ 1503 bool ycbcr_420_allowed; 1504 1505 /** 1506 * @registration_state: Is this connector initializing, exposed 1507 * (registered) with userspace, or unregistered? 1508 * 1509 * Protected by @mutex. 1510 */ 1511 enum drm_connector_registration_state registration_state; 1512 1513 /** 1514 * @modes: 1515 * Modes available on this connector (from fill_modes() + user). 1516 * Protected by &drm_mode_config.mutex. 1517 */ 1518 struct list_head modes; 1519 1520 /** 1521 * @status: 1522 * One of the drm_connector_status enums (connected, not, or unknown). 1523 * Protected by &drm_mode_config.mutex. 1524 */ 1525 enum drm_connector_status status; 1526 1527 /** 1528 * @probed_modes: 1529 * These are modes added by probing with DDC or the BIOS, before 1530 * filtering is applied. Used by the probe helpers. Protected by 1531 * &drm_mode_config.mutex. 1532 */ 1533 struct list_head probed_modes; 1534 1535 /** 1536 * @display_info: Display information is filled from EDID information 1537 * when a display is detected. For non hot-pluggable displays such as 1538 * flat panels in embedded systems, the driver should initialize the 1539 * &drm_display_info.width_mm and &drm_display_info.height_mm fields 1540 * with the physical size of the display. 1541 * 1542 * Protected by &drm_mode_config.mutex. 1543 */ 1544 struct drm_display_info display_info; 1545 1546 /** @funcs: connector control functions */ 1547 const struct drm_connector_funcs *funcs; 1548 1549 /** 1550 * @edid_blob_ptr: DRM property containing EDID if present. Protected by 1551 * &drm_mode_config.mutex. This should be updated only by calling 1552 * drm_connector_update_edid_property(). 1553 */ 1554 struct drm_property_blob *edid_blob_ptr; 1555 1556 /** @properties: property tracking for this connector */ 1557 struct drm_object_properties properties; 1558 1559 /** 1560 * @scaling_mode_property: Optional atomic property to control the 1561 * upscaling. See drm_connector_attach_content_protection_property(). 1562 */ 1563 struct drm_property *scaling_mode_property; 1564 1565 /** 1566 * @vrr_capable_property: Optional property to help userspace 1567 * query hardware support for variable refresh rate on a connector. 1568 * connector. Drivers can add the property to a connector by 1569 * calling drm_connector_attach_vrr_capable_property(). 1570 * 1571 * This should be updated only by calling 1572 * drm_connector_set_vrr_capable_property(). 1573 */ 1574 struct drm_property *vrr_capable_property; 1575 1576 /** 1577 * @colorspace_property: Connector property to set the suitable 1578 * colorspace supported by the sink. 1579 */ 1580 struct drm_property *colorspace_property; 1581 1582 /** 1583 * @path_blob_ptr: 1584 * 1585 * DRM blob property data for the DP MST path property. This should only 1586 * be updated by calling drm_connector_set_path_property(). 1587 */ 1588 struct drm_property_blob *path_blob_ptr; 1589 1590 /** 1591 * @max_bpc_property: Default connector property for the max bpc to be 1592 * driven out of the connector. 1593 */ 1594 struct drm_property *max_bpc_property; 1595 1596 /** @privacy_screen: drm_privacy_screen for this connector, or NULL. */ 1597 struct drm_privacy_screen *privacy_screen; 1598 1599 /** @privacy_screen_notifier: privacy-screen notifier_block */ 1600 struct notifier_block privacy_screen_notifier; 1601 1602 /** 1603 * @privacy_screen_sw_state_property: Optional atomic property for the 1604 * connector to control the integrated privacy screen. 1605 */ 1606 struct drm_property *privacy_screen_sw_state_property; 1607 1608 /** 1609 * @privacy_screen_hw_state_property: Optional atomic property for the 1610 * connector to report the actual integrated privacy screen state. 1611 */ 1612 struct drm_property *privacy_screen_hw_state_property; 1613 1614 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 1615 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 1616 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 1617 1618 /** 1619 * @polled: 1620 * 1621 * Connector polling mode, a combination of 1622 * 1623 * DRM_CONNECTOR_POLL_HPD 1624 * The connector generates hotplug events and doesn't need to be 1625 * periodically polled. The CONNECT and DISCONNECT flags must not 1626 * be set together with the HPD flag. 1627 * 1628 * DRM_CONNECTOR_POLL_CONNECT 1629 * Periodically poll the connector for connection. 1630 * 1631 * DRM_CONNECTOR_POLL_DISCONNECT 1632 * Periodically poll the connector for disconnection, without 1633 * causing flickering even when the connector is in use. DACs should 1634 * rarely do this without a lot of testing. 1635 * 1636 * Set to 0 for connectors that don't support connection status 1637 * discovery. 1638 */ 1639 uint8_t polled; 1640 1641 /** 1642 * @dpms: Current dpms state. For legacy drivers the 1643 * &drm_connector_funcs.dpms callback must update this. For atomic 1644 * drivers, this is handled by the core atomic code, and drivers must 1645 * only take &drm_crtc_state.active into account. 1646 */ 1647 int dpms; 1648 1649 /** @helper_private: mid-layer private data */ 1650 const struct drm_connector_helper_funcs *helper_private; 1651 1652 /** @cmdline_mode: mode line parsed from the kernel cmdline for this connector */ 1653 struct drm_cmdline_mode cmdline_mode; 1654 /** @force: a DRM_FORCE_<foo> state for forced mode sets */ 1655 enum drm_connector_force force; 1656 1657 /** 1658 * @edid_override: Override EDID set via debugfs. 1659 * 1660 * Do not modify or access outside of the drm_edid_override_* family of 1661 * functions. 1662 */ 1663 const struct drm_edid *edid_override; 1664 1665 /** 1666 * @edid_override_mutex: Protect access to edid_override. 1667 */ 1668 struct mutex edid_override_mutex; 1669 1670 /** @epoch_counter: used to detect any other changes in connector, besides status */ 1671 u64 epoch_counter; 1672 1673 /** 1674 * @possible_encoders: Bit mask of encoders that can drive this 1675 * connector, drm_encoder_index() determines the index into the bitfield 1676 * and the bits are set with drm_connector_attach_encoder(). 1677 */ 1678 u32 possible_encoders; 1679 1680 /** 1681 * @encoder: Currently bound encoder driving this connector, if any. 1682 * Only really meaningful for non-atomic drivers. Atomic drivers should 1683 * instead look at &drm_connector_state.best_encoder, and in case they 1684 * need the CRTC driving this output, &drm_connector_state.crtc. 1685 */ 1686 struct drm_encoder *encoder; 1687 1688 #define MAX_ELD_BYTES 128 1689 /** @eld: EDID-like data, if present */ 1690 uint8_t eld[MAX_ELD_BYTES]; 1691 /** @latency_present: AV delay info from ELD, if found */ 1692 bool latency_present[2]; 1693 /** 1694 * @video_latency: Video latency info from ELD, if found. 1695 * [0]: progressive, [1]: interlaced 1696 */ 1697 int video_latency[2]; 1698 /** 1699 * @audio_latency: audio latency info from ELD, if found 1700 * [0]: progressive, [1]: interlaced 1701 */ 1702 int audio_latency[2]; 1703 1704 /** 1705 * @ddc: associated ddc adapter. 1706 * A connector usually has its associated ddc adapter. If a driver uses 1707 * this field, then an appropriate symbolic link is created in connector 1708 * sysfs directory to make it easy for the user to tell which i2c 1709 * adapter is for a particular display. 1710 * 1711 * The field should be set by calling drm_connector_init_with_ddc(). 1712 */ 1713 struct i2c_adapter *ddc; 1714 1715 /** 1716 * @null_edid_counter: track sinks that give us all zeros for the EDID. 1717 * Needed to workaround some HW bugs where we get all 0s 1718 */ 1719 int null_edid_counter; 1720 1721 /** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */ 1722 unsigned bad_edid_counter; 1723 1724 /** 1725 * @edid_corrupt: Indicates whether the last read EDID was corrupt. Used 1726 * in Displayport compliance testing - Displayport Link CTS Core 1.2 1727 * rev1.1 4.2.2.6 1728 */ 1729 bool edid_corrupt; 1730 /** 1731 * @real_edid_checksum: real edid checksum for corrupted edid block. 1732 * Required in Displayport 1.4 compliance testing 1733 * rev1.1 4.2.2.6 1734 */ 1735 u8 real_edid_checksum; 1736 1737 /** @debugfs_entry: debugfs directory for this connector */ 1738 struct dentry *debugfs_entry; 1739 1740 /** 1741 * @state: 1742 * 1743 * Current atomic state for this connector. 1744 * 1745 * This is protected by &drm_mode_config.connection_mutex. Note that 1746 * nonblocking atomic commits access the current connector state without 1747 * taking locks. Either by going through the &struct drm_atomic_state 1748 * pointers, see for_each_oldnew_connector_in_state(), 1749 * for_each_old_connector_in_state() and 1750 * for_each_new_connector_in_state(). Or through careful ordering of 1751 * atomic commit operations as implemented in the atomic helpers, see 1752 * &struct drm_crtc_commit. 1753 */ 1754 struct drm_connector_state *state; 1755 1756 /* DisplayID bits. FIXME: Extract into a substruct? */ 1757 1758 /** 1759 * @tile_blob_ptr: 1760 * 1761 * DRM blob property data for the tile property (used mostly by DP MST). 1762 * This is meant for screens which are driven through separate display 1763 * pipelines represented by &drm_crtc, which might not be running with 1764 * genlocked clocks. For tiled panels which are genlocked, like 1765 * dual-link LVDS or dual-link DSI, the driver should try to not expose 1766 * the tiling and virtualize both &drm_crtc and &drm_plane if needed. 1767 * 1768 * This should only be updated by calling 1769 * drm_connector_set_tile_property(). 1770 */ 1771 struct drm_property_blob *tile_blob_ptr; 1772 1773 /** @has_tile: is this connector connected to a tiled monitor */ 1774 bool has_tile; 1775 /** @tile_group: tile group for the connected monitor */ 1776 struct drm_tile_group *tile_group; 1777 /** @tile_is_single_monitor: whether the tile is one monitor housing */ 1778 bool tile_is_single_monitor; 1779 1780 /** @num_h_tile: number of horizontal tiles in the tile group */ 1781 /** @num_v_tile: number of vertical tiles in the tile group */ 1782 uint8_t num_h_tile, num_v_tile; 1783 /** @tile_h_loc: horizontal location of this tile */ 1784 /** @tile_v_loc: vertical location of this tile */ 1785 uint8_t tile_h_loc, tile_v_loc; 1786 /** @tile_h_size: horizontal size of this tile. */ 1787 /** @tile_v_size: vertical size of this tile. */ 1788 uint16_t tile_h_size, tile_v_size; 1789 1790 /** 1791 * @free_node: 1792 * 1793 * List used only by &drm_connector_list_iter to be able to clean up a 1794 * connector from any context, in conjunction with 1795 * &drm_mode_config.connector_free_work. 1796 */ 1797 struct llist_node free_node; 1798 1799 /** @hdr_sink_metadata: HDR Metadata Information read from sink */ 1800 struct hdr_sink_metadata hdr_sink_metadata; 1801 }; 1802 1803 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 1804 1805 int drm_connector_init(struct drm_device *dev, 1806 struct drm_connector *connector, 1807 const struct drm_connector_funcs *funcs, 1808 int connector_type); 1809 int drm_connector_init_with_ddc(struct drm_device *dev, 1810 struct drm_connector *connector, 1811 const struct drm_connector_funcs *funcs, 1812 int connector_type, 1813 struct i2c_adapter *ddc); 1814 int drmm_connector_init(struct drm_device *dev, 1815 struct drm_connector *connector, 1816 const struct drm_connector_funcs *funcs, 1817 int connector_type, 1818 struct i2c_adapter *ddc); 1819 void drm_connector_attach_edid_property(struct drm_connector *connector); 1820 int drm_connector_register(struct drm_connector *connector); 1821 void drm_connector_unregister(struct drm_connector *connector); 1822 int drm_connector_attach_encoder(struct drm_connector *connector, 1823 struct drm_encoder *encoder); 1824 1825 void drm_connector_cleanup(struct drm_connector *connector); 1826 1827 static inline unsigned int drm_connector_index(const struct drm_connector *connector) 1828 { 1829 return connector->index; 1830 } 1831 1832 static inline u32 drm_connector_mask(const struct drm_connector *connector) 1833 { 1834 return 1 << connector->index; 1835 } 1836 1837 /** 1838 * drm_connector_lookup - lookup connector object 1839 * @dev: DRM device 1840 * @file_priv: drm file to check for lease against. 1841 * @id: connector object id 1842 * 1843 * This function looks up the connector object specified by id 1844 * add takes a reference to it. 1845 */ 1846 static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, 1847 struct drm_file *file_priv, 1848 uint32_t id) 1849 { 1850 struct drm_mode_object *mo; 1851 mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CONNECTOR); 1852 return mo ? obj_to_connector(mo) : NULL; 1853 } 1854 1855 /** 1856 * drm_connector_get - acquire a connector reference 1857 * @connector: DRM connector 1858 * 1859 * This function increments the connector's refcount. 1860 */ 1861 static inline void drm_connector_get(struct drm_connector *connector) 1862 { 1863 drm_mode_object_get(&connector->base); 1864 } 1865 1866 /** 1867 * drm_connector_put - release a connector reference 1868 * @connector: DRM connector 1869 * 1870 * This function decrements the connector's reference count and frees the 1871 * object if the reference count drops to zero. 1872 */ 1873 static inline void drm_connector_put(struct drm_connector *connector) 1874 { 1875 drm_mode_object_put(&connector->base); 1876 } 1877 1878 /** 1879 * drm_connector_is_unregistered - has the connector been unregistered from 1880 * userspace? 1881 * @connector: DRM connector 1882 * 1883 * Checks whether or not @connector has been unregistered from userspace. 1884 * 1885 * Returns: 1886 * True if the connector was unregistered, false if the connector is 1887 * registered or has not yet been registered with userspace. 1888 */ 1889 static inline bool 1890 drm_connector_is_unregistered(struct drm_connector *connector) 1891 { 1892 return READ_ONCE(connector->registration_state) == 1893 DRM_CONNECTOR_UNREGISTERED; 1894 } 1895 1896 void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode); 1897 const char *drm_get_connector_type_name(unsigned int connector_type); 1898 const char *drm_get_connector_status_name(enum drm_connector_status status); 1899 const char *drm_get_subpixel_order_name(enum subpixel_order order); 1900 const char *drm_get_dpms_name(int val); 1901 const char *drm_get_dvi_i_subconnector_name(int val); 1902 const char *drm_get_dvi_i_select_name(int val); 1903 const char *drm_get_tv_mode_name(int val); 1904 const char *drm_get_tv_subconnector_name(int val); 1905 const char *drm_get_tv_select_name(int val); 1906 const char *drm_get_dp_subconnector_name(int val); 1907 const char *drm_get_content_protection_name(int val); 1908 const char *drm_get_hdcp_content_type_name(int val); 1909 1910 int drm_get_tv_mode_from_name(const char *name, size_t len); 1911 1912 int drm_mode_create_dvi_i_properties(struct drm_device *dev); 1913 void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector); 1914 1915 int drm_mode_create_tv_margin_properties(struct drm_device *dev); 1916 int drm_mode_create_tv_properties_legacy(struct drm_device *dev, 1917 unsigned int num_modes, 1918 const char * const modes[]); 1919 int drm_mode_create_tv_properties(struct drm_device *dev, 1920 unsigned int supported_tv_modes); 1921 void drm_connector_attach_tv_margin_properties(struct drm_connector *conn); 1922 int drm_mode_create_scaling_mode_property(struct drm_device *dev); 1923 int drm_connector_attach_content_type_property(struct drm_connector *dev); 1924 int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, 1925 u32 scaling_mode_mask); 1926 int drm_connector_attach_vrr_capable_property( 1927 struct drm_connector *connector); 1928 int drm_connector_attach_colorspace_property(struct drm_connector *connector); 1929 int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector); 1930 bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state, 1931 struct drm_connector_state *new_state); 1932 int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 1933 int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector); 1934 int drm_mode_create_dp_colorspace_property(struct drm_connector *connector); 1935 int drm_mode_create_content_type_property(struct drm_device *dev); 1936 int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 1937 1938 int drm_connector_set_path_property(struct drm_connector *connector, 1939 const char *path); 1940 int drm_connector_set_tile_property(struct drm_connector *connector); 1941 int drm_connector_update_edid_property(struct drm_connector *connector, 1942 const struct edid *edid); 1943 void drm_connector_set_link_status_property(struct drm_connector *connector, 1944 uint64_t link_status); 1945 void drm_connector_set_vrr_capable_property( 1946 struct drm_connector *connector, bool capable); 1947 int drm_connector_set_panel_orientation( 1948 struct drm_connector *connector, 1949 enum drm_panel_orientation panel_orientation); 1950 int drm_connector_set_panel_orientation_with_quirk( 1951 struct drm_connector *connector, 1952 enum drm_panel_orientation panel_orientation, 1953 int width, int height); 1954 int drm_connector_set_orientation_from_panel( 1955 struct drm_connector *connector, 1956 struct drm_panel *panel); 1957 int drm_connector_attach_max_bpc_property(struct drm_connector *connector, 1958 int min, int max); 1959 void drm_connector_create_privacy_screen_properties(struct drm_connector *conn); 1960 void drm_connector_attach_privacy_screen_properties(struct drm_connector *conn); 1961 void drm_connector_attach_privacy_screen_provider( 1962 struct drm_connector *connector, struct drm_privacy_screen *priv); 1963 void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state); 1964 1965 /** 1966 * struct drm_tile_group - Tile group metadata 1967 * @refcount: reference count 1968 * @dev: DRM device 1969 * @id: tile group id exposed to userspace 1970 * @group_data: Sink-private data identifying this group 1971 * 1972 * @group_data corresponds to displayid vend/prod/serial for external screens 1973 * with an EDID. 1974 */ 1975 struct drm_tile_group { 1976 struct kref refcount; 1977 struct drm_device *dev; 1978 int id; 1979 u8 group_data[8]; 1980 }; 1981 1982 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 1983 const char topology[8]); 1984 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 1985 const char topology[8]); 1986 void drm_mode_put_tile_group(struct drm_device *dev, 1987 struct drm_tile_group *tg); 1988 1989 /** 1990 * struct drm_connector_list_iter - connector_list iterator 1991 * 1992 * This iterator tracks state needed to be able to walk the connector_list 1993 * within struct drm_mode_config. Only use together with 1994 * drm_connector_list_iter_begin(), drm_connector_list_iter_end() and 1995 * drm_connector_list_iter_next() respectively the convenience macro 1996 * drm_for_each_connector_iter(). 1997 * 1998 * Note that the return value of drm_connector_list_iter_next() is only valid 1999 * up to the next drm_connector_list_iter_next() or 2000 * drm_connector_list_iter_end() call. If you want to use the connector later, 2001 * then you need to grab your own reference first using drm_connector_get(). 2002 */ 2003 struct drm_connector_list_iter { 2004 /* private: */ 2005 struct drm_device *dev; 2006 struct drm_connector *conn; 2007 }; 2008 2009 void drm_connector_list_iter_begin(struct drm_device *dev, 2010 struct drm_connector_list_iter *iter); 2011 struct drm_connector * 2012 drm_connector_list_iter_next(struct drm_connector_list_iter *iter); 2013 void drm_connector_list_iter_end(struct drm_connector_list_iter *iter); 2014 2015 bool drm_connector_has_possible_encoder(struct drm_connector *connector, 2016 struct drm_encoder *encoder); 2017 2018 /** 2019 * drm_for_each_connector_iter - connector_list iterator macro 2020 * @connector: &struct drm_connector pointer used as cursor 2021 * @iter: &struct drm_connector_list_iter 2022 * 2023 * Note that @connector is only valid within the list body, if you want to use 2024 * @connector after calling drm_connector_list_iter_end() then you need to grab 2025 * your own reference first using drm_connector_get(). 2026 */ 2027 #define drm_for_each_connector_iter(connector, iter) \ 2028 while ((connector = drm_connector_list_iter_next(iter))) 2029 2030 /** 2031 * drm_connector_for_each_possible_encoder - iterate connector's possible encoders 2032 * @connector: &struct drm_connector pointer 2033 * @encoder: &struct drm_encoder pointer used as cursor 2034 */ 2035 #define drm_connector_for_each_possible_encoder(connector, encoder) \ 2036 drm_for_each_encoder_mask(encoder, (connector)->dev, \ 2037 (connector)->possible_encoders) 2038 2039 #endif 2040