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