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 #include <drm/drm_property.h> 34 35 #include <uapi/drm/drm_mode.h> 36 37 struct drm_connector_helper_funcs; 38 struct drm_modeset_acquire_ctx; 39 struct drm_device; 40 struct drm_crtc; 41 struct drm_encoder; 42 struct drm_panel; 43 struct drm_property; 44 struct drm_property_blob; 45 struct drm_printer; 46 struct drm_privacy_screen; 47 struct edid; 48 struct i2c_adapter; 49 50 enum drm_connector_force { 51 DRM_FORCE_UNSPECIFIED, 52 DRM_FORCE_OFF, 53 DRM_FORCE_ON, /* force on analog part normally */ 54 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 55 }; 56 57 /** 58 * enum drm_connector_status - status for a &drm_connector 59 * 60 * This enum is used to track the connector status. There are no separate 61 * #defines for the uapi! 62 */ 63 enum drm_connector_status { 64 /** 65 * @connector_status_connected: The connector is definitely connected to 66 * a sink device, and can be enabled. 67 */ 68 connector_status_connected = 1, 69 /** 70 * @connector_status_disconnected: The connector isn't connected to a 71 * sink device which can be autodetect. For digital outputs like DP or 72 * HDMI (which can be realiable probed) this means there's really 73 * nothing there. It is driver-dependent whether a connector with this 74 * status can be lit up or not. 75 */ 76 connector_status_disconnected = 2, 77 /** 78 * @connector_status_unknown: The connector's status could not be 79 * reliably detected. This happens when probing would either cause 80 * flicker (like load-detection when the connector is in use), or when a 81 * hardware resource isn't available (like when load-detection needs a 82 * free CRTC). It should be possible to light up the connector with one 83 * of the listed fallback modes. For default configuration userspace 84 * should only try to light up connectors with unknown status when 85 * there's not connector with @connector_status_connected. 86 */ 87 connector_status_unknown = 3, 88 }; 89 90 /** 91 * enum drm_connector_registration_state - userspace registration status for 92 * a &drm_connector 93 * 94 * This enum is used to track the status of initializing a connector and 95 * registering it with userspace, so that DRM can prevent bogus modesets on 96 * connectors that no longer exist. 97 */ 98 enum drm_connector_registration_state { 99 /** 100 * @DRM_CONNECTOR_INITIALIZING: The connector has just been created, 101 * but has yet to be exposed to userspace. There should be no 102 * additional restrictions to how the state of this connector may be 103 * modified. 104 */ 105 DRM_CONNECTOR_INITIALIZING = 0, 106 107 /** 108 * @DRM_CONNECTOR_REGISTERED: The connector has been fully initialized 109 * and registered with sysfs, as such it has been exposed to 110 * userspace. There should be no additional restrictions to how the 111 * state of this connector may be modified. 112 */ 113 DRM_CONNECTOR_REGISTERED = 1, 114 115 /** 116 * @DRM_CONNECTOR_UNREGISTERED: The connector has either been exposed 117 * to userspace and has since been unregistered and removed from 118 * userspace, or the connector was unregistered before it had a chance 119 * to be exposed to userspace (e.g. still in the 120 * @DRM_CONNECTOR_INITIALIZING state). When a connector is 121 * unregistered, there are additional restrictions to how its state 122 * may be modified: 123 * 124 * - An unregistered connector may only have its DPMS changed from 125 * On->Off. Once DPMS is changed to Off, it may not be switched back 126 * to On. 127 * - Modesets are not allowed on unregistered connectors, unless they 128 * would result in disabling its assigned CRTCs. This means 129 * disabling a CRTC on an unregistered connector is OK, but enabling 130 * one is not. 131 * - Removing a CRTC from an unregistered connector is OK, but new 132 * CRTCs may never be assigned to an unregistered connector. 133 */ 134 DRM_CONNECTOR_UNREGISTERED = 2, 135 }; 136 137 enum subpixel_order { 138 SubPixelUnknown = 0, 139 SubPixelHorizontalRGB, 140 SubPixelHorizontalBGR, 141 SubPixelVerticalRGB, 142 SubPixelVerticalBGR, 143 SubPixelNone, 144 145 }; 146 147 /** 148 * enum drm_connector_tv_mode - Analog TV output mode 149 * 150 * This enum is used to indicate the TV output mode used on an analog TV 151 * connector. 152 * 153 * WARNING: The values of this enum is uABI since they're exposed in the 154 * "TV mode" connector property. 155 */ 156 enum drm_connector_tv_mode { 157 /** 158 * @DRM_MODE_TV_MODE_NTSC: CCIR System M (aka 525-lines) 159 * together with the NTSC Color Encoding. 160 */ 161 DRM_MODE_TV_MODE_NTSC, 162 163 /** 164 * @DRM_MODE_TV_MODE_NTSC_443: Variant of 165 * @DRM_MODE_TV_MODE_NTSC. Uses a color subcarrier frequency 166 * of 4.43 MHz. 167 */ 168 DRM_MODE_TV_MODE_NTSC_443, 169 170 /** 171 * @DRM_MODE_TV_MODE_NTSC_J: Variant of @DRM_MODE_TV_MODE_NTSC 172 * used in Japan. Uses a black level equals to the blanking 173 * level. 174 */ 175 DRM_MODE_TV_MODE_NTSC_J, 176 177 /** 178 * @DRM_MODE_TV_MODE_PAL: CCIR System B together with the PAL 179 * color system. 180 */ 181 DRM_MODE_TV_MODE_PAL, 182 183 /** 184 * @DRM_MODE_TV_MODE_PAL_M: CCIR System M (aka 525-lines) 185 * together with the PAL color encoding 186 */ 187 DRM_MODE_TV_MODE_PAL_M, 188 189 /** 190 * @DRM_MODE_TV_MODE_PAL_N: CCIR System N together with the PAL 191 * color encoding. It uses 625 lines, but has a color subcarrier 192 * frequency of 3.58MHz, the SECAM color space, and narrower 193 * channels compared to most of the other PAL variants. 194 */ 195 DRM_MODE_TV_MODE_PAL_N, 196 197 /** 198 * @DRM_MODE_TV_MODE_SECAM: CCIR System B together with the 199 * SECAM color system. 200 */ 201 DRM_MODE_TV_MODE_SECAM, 202 203 /** 204 * @DRM_MODE_TV_MODE_MAX: Number of analog TV output modes. 205 * 206 * Internal implementation detail; this is not uABI. 207 */ 208 DRM_MODE_TV_MODE_MAX, 209 }; 210 211 /** 212 * struct drm_scrambling: sink's scrambling support. 213 */ 214 struct drm_scrambling { 215 /** 216 * @supported: scrambling supported for rates > 340 Mhz. 217 */ 218 bool supported; 219 /** 220 * @low_rates: scrambling supported for rates <= 340 Mhz. 221 */ 222 bool low_rates; 223 }; 224 225 /* 226 * struct drm_scdc - Information about scdc capabilities of a HDMI 2.0 sink 227 * 228 * Provides SCDC register support and capabilities related information on a 229 * HDMI 2.0 sink. In case of a HDMI 1.4 sink, all parameter must be 0. 230 */ 231 struct drm_scdc { 232 /** 233 * @supported: status control & data channel present. 234 */ 235 bool supported; 236 /** 237 * @read_request: sink is capable of generating scdc read request. 238 */ 239 bool read_request; 240 /** 241 * @scrambling: sink's scrambling capabilities 242 */ 243 struct drm_scrambling scrambling; 244 }; 245 246 /** 247 * struct drm_hdmi_dsc_cap - DSC capabilities of HDMI sink 248 * 249 * Describes the DSC support provided by HDMI 2.1 sink. 250 * The information is fetched fom additional HFVSDB blocks defined 251 * for HDMI 2.1. 252 */ 253 struct drm_hdmi_dsc_cap { 254 /** @v_1p2: flag for dsc1.2 version support by sink */ 255 bool v_1p2; 256 257 /** @native_420: Does sink support DSC with 4:2:0 compression */ 258 bool native_420; 259 260 /** 261 * @all_bpp: Does sink support all bpp with 4:4:4: or 4:2:2 262 * compressed formats 263 */ 264 bool all_bpp; 265 266 /** 267 * @bpc_supported: compressed bpc supported by sink : 10, 12 or 16 bpc 268 */ 269 u8 bpc_supported; 270 271 /** @max_slices: maximum number of Horizontal slices supported by */ 272 u8 max_slices; 273 274 /** @clk_per_slice : max pixel clock in MHz supported per slice */ 275 int clk_per_slice; 276 277 /** @max_lanes : dsc max lanes supported for Fixed rate Link training */ 278 u8 max_lanes; 279 280 /** @max_frl_rate_per_lane : maximum frl rate with DSC per lane */ 281 u8 max_frl_rate_per_lane; 282 283 /** @total_chunk_kbytes: max size of chunks in KBs supported per line*/ 284 u8 total_chunk_kbytes; 285 }; 286 287 /** 288 * struct drm_hdmi_info - runtime information about the connected HDMI sink 289 * 290 * Describes if a given display supports advanced HDMI 2.0 features. 291 * This information is available in CEA-861-F extension blocks (like HF-VSDB). 292 */ 293 struct drm_hdmi_info { 294 /** @scdc: sink's scdc support and capabilities */ 295 struct drm_scdc scdc; 296 297 /** 298 * @y420_vdb_modes: bitmap of modes which can support ycbcr420 299 * output only (not normal RGB/YCBCR444/422 outputs). The max VIC 300 * defined by the CEA-861-G spec is 219, so the size is 256 bits to map 301 * up to 256 VICs. 302 */ 303 unsigned long y420_vdb_modes[BITS_TO_LONGS(256)]; 304 305 /** 306 * @y420_cmdb_modes: bitmap of modes which can support ycbcr420 307 * output also, along with normal HDMI outputs. The max VIC defined by 308 * the CEA-861-G spec is 219, so the size is 256 bits to map up to 256 309 * VICs. 310 */ 311 unsigned long y420_cmdb_modes[BITS_TO_LONGS(256)]; 312 313 /** @y420_dc_modes: bitmap of deep color support index */ 314 u8 y420_dc_modes; 315 316 /** @max_frl_rate_per_lane: support fixed rate link */ 317 u8 max_frl_rate_per_lane; 318 319 /** @max_lanes: supported by sink */ 320 u8 max_lanes; 321 322 /** @dsc_cap: DSC capabilities of the sink */ 323 struct drm_hdmi_dsc_cap dsc_cap; 324 }; 325 326 /** 327 * enum drm_link_status - connector's link_status property value 328 * 329 * This enum is used as the connector's link status property value. 330 * It is set to the values defined in uapi. 331 * 332 * @DRM_LINK_STATUS_GOOD: DP Link is Good as a result of successful 333 * link training 334 * @DRM_LINK_STATUS_BAD: DP Link is BAD as a result of link training 335 * failure 336 */ 337 enum drm_link_status { 338 DRM_LINK_STATUS_GOOD = DRM_MODE_LINK_STATUS_GOOD, 339 DRM_LINK_STATUS_BAD = DRM_MODE_LINK_STATUS_BAD, 340 }; 341 342 /** 343 * enum drm_panel_orientation - panel_orientation info for &drm_display_info 344 * 345 * This enum is used to track the (LCD) panel orientation. There are no 346 * separate #defines for the uapi! 347 * 348 * @DRM_MODE_PANEL_ORIENTATION_UNKNOWN: The drm driver has not provided any 349 * panel orientation information (normal 350 * for non panels) in this case the "panel 351 * orientation" connector prop will not be 352 * attached. 353 * @DRM_MODE_PANEL_ORIENTATION_NORMAL: The top side of the panel matches the 354 * top side of the device's casing. 355 * @DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: The top side of the panel matches the 356 * bottom side of the device's casing, iow 357 * the panel is mounted upside-down. 358 * @DRM_MODE_PANEL_ORIENTATION_LEFT_UP: The left side of the panel matches the 359 * top side of the device's casing. 360 * @DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: The right side of the panel matches the 361 * top side of the device's casing. 362 */ 363 enum drm_panel_orientation { 364 DRM_MODE_PANEL_ORIENTATION_UNKNOWN = -1, 365 DRM_MODE_PANEL_ORIENTATION_NORMAL = 0, 366 DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, 367 DRM_MODE_PANEL_ORIENTATION_LEFT_UP, 368 DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 369 }; 370 371 /** 372 * struct drm_monitor_range_info - Panel's Monitor range in EDID for 373 * &drm_display_info 374 * 375 * This struct is used to store a frequency range supported by panel 376 * as parsed from EDID's detailed monitor range descriptor block. 377 * 378 * @min_vfreq: This is the min supported refresh rate in Hz from 379 * EDID's detailed monitor range. 380 * @max_vfreq: This is the max supported refresh rate in Hz from 381 * EDID's detailed monitor range 382 */ 383 struct drm_monitor_range_info { 384 u16 min_vfreq; 385 u16 max_vfreq; 386 }; 387 388 /** 389 * struct drm_luminance_range_info - Panel's luminance range for 390 * &drm_display_info. Calculated using data in EDID 391 * 392 * This struct is used to store a luminance range supported by panel 393 * as calculated using data from EDID's static hdr metadata. 394 * 395 * @min_luminance: This is the min supported luminance value 396 * 397 * @max_luminance: This is the max supported luminance value 398 */ 399 struct drm_luminance_range_info { 400 u32 min_luminance; 401 u32 max_luminance; 402 }; 403 404 /** 405 * enum drm_privacy_screen_status - privacy screen status 406 * 407 * This enum is used to track and control the state of the integrated privacy 408 * screen present on some display panels, via the "privacy-screen sw-state" 409 * and "privacy-screen hw-state" properties. Note the _LOCKED enum values 410 * are only valid for the "privacy-screen hw-state" property. 411 * 412 * @PRIVACY_SCREEN_DISABLED: 413 * The privacy-screen on the panel is disabled 414 * @PRIVACY_SCREEN_ENABLED: 415 * The privacy-screen on the panel is enabled 416 * @PRIVACY_SCREEN_DISABLED_LOCKED: 417 * The privacy-screen on the panel is disabled and locked (cannot be changed) 418 * @PRIVACY_SCREEN_ENABLED_LOCKED: 419 * The privacy-screen on the panel is enabled and locked (cannot be changed) 420 */ 421 enum drm_privacy_screen_status { 422 PRIVACY_SCREEN_DISABLED = 0, 423 PRIVACY_SCREEN_ENABLED, 424 PRIVACY_SCREEN_DISABLED_LOCKED, 425 PRIVACY_SCREEN_ENABLED_LOCKED, 426 }; 427 428 /** 429 * enum drm_colorspace - color space 430 * 431 * This enum is a consolidated colorimetry list supported by HDMI and 432 * DP protocol standard. The respective connectors will register 433 * a property with the subset of this list (supported by that 434 * respective protocol). Userspace will set the colorspace through 435 * a colorspace property which will be created and exposed to 436 * userspace. 437 * 438 * DP definitions come from the DP v2.0 spec 439 * HDMI definitions come from the CTA-861-H spec 440 * 441 * A note on YCC and RGB variants: 442 * 443 * Since userspace is not aware of the encoding on the wire 444 * (RGB or YCbCr), drivers are free to pick the appropriate 445 * variant, regardless of what userspace selects. E.g., if 446 * BT2020_RGB is selected by userspace a driver will pick 447 * BT2020_YCC if the encoding on the wire is YUV444 or YUV420. 448 * 449 * @DRM_MODE_COLORIMETRY_DEFAULT: 450 * Driver specific behavior. 451 * @DRM_MODE_COLORIMETRY_NO_DATA: 452 * Driver specific behavior. 453 * @DRM_MODE_COLORIMETRY_SMPTE_170M_YCC: 454 * (HDMI) 455 * SMPTE ST 170M colorimetry format 456 * @DRM_MODE_COLORIMETRY_BT709_YCC: 457 * (HDMI, DP) 458 * ITU-R BT.709 colorimetry format 459 * @DRM_MODE_COLORIMETRY_XVYCC_601: 460 * (HDMI, DP) 461 * xvYCC601 colorimetry format 462 * @DRM_MODE_COLORIMETRY_XVYCC_709: 463 * (HDMI, DP) 464 * xvYCC709 colorimetry format 465 * @DRM_MODE_COLORIMETRY_SYCC_601: 466 * (HDMI, DP) 467 * sYCC601 colorimetry format 468 * @DRM_MODE_COLORIMETRY_OPYCC_601: 469 * (HDMI, DP) 470 * opYCC601 colorimetry format 471 * @DRM_MODE_COLORIMETRY_OPRGB: 472 * (HDMI, DP) 473 * opRGB colorimetry format 474 * @DRM_MODE_COLORIMETRY_BT2020_CYCC: 475 * (HDMI, DP) 476 * ITU-R BT.2020 Y'c C'bc C'rc (constant luminance) colorimetry format 477 * @DRM_MODE_COLORIMETRY_BT2020_RGB: 478 * (HDMI, DP) 479 * ITU-R BT.2020 R' G' B' colorimetry format 480 * @DRM_MODE_COLORIMETRY_BT2020_YCC: 481 * (HDMI, DP) 482 * ITU-R BT.2020 Y' C'b C'r colorimetry format 483 * @DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65: 484 * (HDMI) 485 * SMPTE ST 2113 P3D65 colorimetry format 486 * @DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER: 487 * (HDMI) 488 * SMPTE ST 2113 P3DCI colorimetry format 489 * @DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED: 490 * (DP) 491 * RGB wide gamut fixed point colorimetry format 492 * @DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT: 493 * (DP) 494 * RGB wide gamut floating point 495 * (scRGB (IEC 61966-2-2)) colorimetry format 496 * @DRM_MODE_COLORIMETRY_BT601_YCC: 497 * (DP) 498 * ITU-R BT.601 colorimetry format 499 * The DP spec does not say whether this is the 525 or the 625 500 * line version. 501 * @DRM_MODE_COLORIMETRY_COUNT: 502 * Not a valid value; merely used four counting 503 */ 504 enum drm_colorspace { 505 /* For Default case, driver will set the colorspace */ 506 DRM_MODE_COLORIMETRY_DEFAULT = 0, 507 /* CEA 861 Normal Colorimetry options */ 508 DRM_MODE_COLORIMETRY_NO_DATA = 0, 509 DRM_MODE_COLORIMETRY_SMPTE_170M_YCC = 1, 510 DRM_MODE_COLORIMETRY_BT709_YCC = 2, 511 /* CEA 861 Extended Colorimetry Options */ 512 DRM_MODE_COLORIMETRY_XVYCC_601 = 3, 513 DRM_MODE_COLORIMETRY_XVYCC_709 = 4, 514 DRM_MODE_COLORIMETRY_SYCC_601 = 5, 515 DRM_MODE_COLORIMETRY_OPYCC_601 = 6, 516 DRM_MODE_COLORIMETRY_OPRGB = 7, 517 DRM_MODE_COLORIMETRY_BT2020_CYCC = 8, 518 DRM_MODE_COLORIMETRY_BT2020_RGB = 9, 519 DRM_MODE_COLORIMETRY_BT2020_YCC = 10, 520 /* Additional Colorimetry extension added as part of CTA 861.G */ 521 DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65 = 11, 522 DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER = 12, 523 /* Additional Colorimetry Options added for DP 1.4a VSC Colorimetry Format */ 524 DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED = 13, 525 DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT = 14, 526 DRM_MODE_COLORIMETRY_BT601_YCC = 15, 527 DRM_MODE_COLORIMETRY_COUNT 528 }; 529 530 /** 531 * enum drm_bus_flags - bus_flags info for &drm_display_info 532 * 533 * This enum defines signal polarities and clock edge information for signals on 534 * a bus as bitmask flags. 535 * 536 * The clock edge information is conveyed by two sets of symbols, 537 * DRM_BUS_FLAGS_*_DRIVE_\* and DRM_BUS_FLAGS_*_SAMPLE_\*. When this enum is 538 * used to describe a bus from the point of view of the transmitter, the 539 * \*_DRIVE_\* flags should be used. When used from the point of view of the 540 * receiver, the \*_SAMPLE_\* flags should be used. The \*_DRIVE_\* and 541 * \*_SAMPLE_\* flags alias each other, with the \*_SAMPLE_POSEDGE and 542 * \*_SAMPLE_NEGEDGE flags being equal to \*_DRIVE_NEGEDGE and \*_DRIVE_POSEDGE 543 * respectively. This simplifies code as signals are usually sampled on the 544 * opposite edge of the driving edge. Transmitters and receivers may however 545 * need to take other signal timings into account to convert between driving 546 * and sample edges. 547 */ 548 enum drm_bus_flags { 549 /** 550 * @DRM_BUS_FLAG_DE_LOW: 551 * 552 * The Data Enable signal is active low 553 */ 554 DRM_BUS_FLAG_DE_LOW = BIT(0), 555 556 /** 557 * @DRM_BUS_FLAG_DE_HIGH: 558 * 559 * The Data Enable signal is active high 560 */ 561 DRM_BUS_FLAG_DE_HIGH = BIT(1), 562 563 /** 564 * @DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE: 565 * 566 * Data is driven on the rising edge of the pixel clock 567 */ 568 DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE = BIT(2), 569 570 /** 571 * @DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE: 572 * 573 * Data is driven on the falling edge of the pixel clock 574 */ 575 DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE = BIT(3), 576 577 /** 578 * @DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE: 579 * 580 * Data is sampled on the rising edge of the pixel clock 581 */ 582 DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE, 583 584 /** 585 * @DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE: 586 * 587 * Data is sampled on the falling edge of the pixel clock 588 */ 589 DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE, 590 591 /** 592 * @DRM_BUS_FLAG_DATA_MSB_TO_LSB: 593 * 594 * Data is transmitted MSB to LSB on the bus 595 */ 596 DRM_BUS_FLAG_DATA_MSB_TO_LSB = BIT(4), 597 598 /** 599 * @DRM_BUS_FLAG_DATA_LSB_TO_MSB: 600 * 601 * Data is transmitted LSB to MSB on the bus 602 */ 603 DRM_BUS_FLAG_DATA_LSB_TO_MSB = BIT(5), 604 605 /** 606 * @DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE: 607 * 608 * Sync signals are driven on the rising edge of the pixel clock 609 */ 610 DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE = BIT(6), 611 612 /** 613 * @DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE: 614 * 615 * Sync signals are driven on the falling edge of the pixel clock 616 */ 617 DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE = BIT(7), 618 619 /** 620 * @DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE: 621 * 622 * Sync signals are sampled on the rising edge of the pixel clock 623 */ 624 DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE = DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE, 625 626 /** 627 * @DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE: 628 * 629 * Sync signals are sampled on the falling edge of the pixel clock 630 */ 631 DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE = DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE, 632 633 /** 634 * @DRM_BUS_FLAG_SHARP_SIGNALS: 635 * 636 * Set if the Sharp-specific signals (SPL, CLS, PS, REV) must be used 637 */ 638 DRM_BUS_FLAG_SHARP_SIGNALS = BIT(8), 639 }; 640 641 /** 642 * struct drm_display_info - runtime data about the connected sink 643 * 644 * Describes a given display (e.g. CRT or flat panel) and its limitations. For 645 * fixed display sinks like built-in panels there's not much difference between 646 * this and &struct drm_connector. But for sinks with a real cable this 647 * structure is meant to describe all the things at the other end of the cable. 648 * 649 * For sinks which provide an EDID this can be filled out by calling 650 * drm_add_edid_modes(). 651 */ 652 struct drm_display_info { 653 /** 654 * @width_mm: Physical width in mm. 655 */ 656 unsigned int width_mm; 657 658 /** 659 * @height_mm: Physical height in mm. 660 */ 661 unsigned int height_mm; 662 663 /** 664 * @bpc: Maximum bits per color channel. Used by HDMI and DP outputs. 665 */ 666 unsigned int bpc; 667 668 /** 669 * @subpixel_order: Subpixel order of LCD panels. 670 */ 671 enum subpixel_order subpixel_order; 672 673 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 674 #define DRM_COLOR_FORMAT_YCBCR444 (1<<1) 675 #define DRM_COLOR_FORMAT_YCBCR422 (1<<2) 676 #define DRM_COLOR_FORMAT_YCBCR420 (1<<3) 677 678 /** 679 * @panel_orientation: Read only connector property for built-in panels, 680 * indicating the orientation of the panel vs the device's casing. 681 * drm_connector_init() sets this to DRM_MODE_PANEL_ORIENTATION_UNKNOWN. 682 * When not UNKNOWN this gets used by the drm_fb_helpers to rotate the 683 * fb to compensate and gets exported as prop to userspace. 684 */ 685 int panel_orientation; 686 687 /** 688 * @color_formats: HDMI Color formats, selects between RGB and YCrCb 689 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones 690 * as used to describe the pixel format in framebuffers, and also don't 691 * match the formats in @bus_formats which are shared with v4l. 692 */ 693 u32 color_formats; 694 695 /** 696 * @bus_formats: Pixel data format on the wire, somewhat redundant with 697 * @color_formats. Array of size @num_bus_formats encoded using 698 * MEDIA_BUS_FMT\_ defines shared with v4l and media drivers. 699 */ 700 const u32 *bus_formats; 701 /** 702 * @num_bus_formats: Size of @bus_formats array. 703 */ 704 unsigned int num_bus_formats; 705 706 /** 707 * @bus_flags: Additional information (like pixel signal polarity) for 708 * the pixel data on the bus, using &enum drm_bus_flags values 709 * DRM_BUS_FLAGS\_. 710 */ 711 u32 bus_flags; 712 713 /** 714 * @max_tmds_clock: Maximum TMDS clock rate supported by the 715 * sink in kHz. 0 means undefined. 716 */ 717 int max_tmds_clock; 718 719 /** 720 * @dvi_dual: Dual-link DVI sink? 721 */ 722 bool dvi_dual; 723 724 /** 725 * @is_hdmi: True if the sink is an HDMI device. 726 * 727 * This field shall be used instead of calling 728 * drm_detect_hdmi_monitor() when possible. 729 */ 730 bool is_hdmi; 731 732 /** 733 * @has_audio: True if the sink supports audio. 734 * 735 * This field shall be used instead of calling 736 * drm_detect_monitor_audio() when possible. 737 */ 738 bool has_audio; 739 740 /** 741 * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? 742 */ 743 bool has_hdmi_infoframe; 744 745 /** 746 * @rgb_quant_range_selectable: Does the sink support selecting 747 * the RGB quantization range? 748 */ 749 bool rgb_quant_range_selectable; 750 751 /** 752 * @edid_hdmi_rgb444_dc_modes: Mask of supported hdmi deep color modes 753 * in RGB 4:4:4. Even more stuff redundant with @bus_formats. 754 */ 755 u8 edid_hdmi_rgb444_dc_modes; 756 757 /** 758 * @edid_hdmi_ycbcr444_dc_modes: Mask of supported hdmi deep color 759 * modes in YCbCr 4:4:4. Even more stuff redundant with @bus_formats. 760 */ 761 u8 edid_hdmi_ycbcr444_dc_modes; 762 763 /** 764 * @cea_rev: CEA revision of the HDMI sink. 765 */ 766 u8 cea_rev; 767 768 /** 769 * @hdmi: advance features of a HDMI sink. 770 */ 771 struct drm_hdmi_info hdmi; 772 773 /** 774 * @non_desktop: Non desktop display (HMD). 775 */ 776 bool non_desktop; 777 778 /** 779 * @monitor_range: Frequency range supported by monitor range descriptor 780 */ 781 struct drm_monitor_range_info monitor_range; 782 783 /** 784 * @luminance_range: Luminance range supported by panel 785 */ 786 struct drm_luminance_range_info luminance_range; 787 788 /** 789 * @mso_stream_count: eDP Multi-SST Operation (MSO) stream count from 790 * the DisplayID VESA vendor block. 0 for conventional Single-Stream 791 * Transport (SST), or 2 or 4 MSO streams. 792 */ 793 u8 mso_stream_count; 794 795 /** 796 * @mso_pixel_overlap: eDP MSO segment pixel overlap, 0-8 pixels. 797 */ 798 u8 mso_pixel_overlap; 799 800 /** 801 * @max_dsc_bpp: Maximum DSC target bitrate, if it is set to 0 the 802 * monitor's default value is used instead. 803 */ 804 u32 max_dsc_bpp; 805 806 /** 807 * @vics: Array of vics_len VICs. Internal to EDID parsing. 808 */ 809 u8 *vics; 810 811 /** 812 * @vics_len: Number of elements in vics. Internal to EDID parsing. 813 */ 814 int vics_len; 815 816 /** 817 * @quirks: EDID based quirks. Internal to EDID parsing. 818 */ 819 u32 quirks; 820 821 /** 822 * @source_physical_address: Source Physical Address from HDMI 823 * Vendor-Specific Data Block, for CEC usage. 824 * 825 * Defaults to CEC_PHYS_ADDR_INVALID (0xffff). 826 */ 827 u16 source_physical_address; 828 }; 829 830 int drm_display_info_set_bus_formats(struct drm_display_info *info, 831 const u32 *formats, 832 unsigned int num_formats); 833 834 /** 835 * struct drm_connector_tv_margins - TV connector related margins 836 * 837 * Describes the margins in pixels to put around the image on TV 838 * connectors to deal with overscan. 839 */ 840 struct drm_connector_tv_margins { 841 /** 842 * @bottom: Bottom margin in pixels. 843 */ 844 unsigned int bottom; 845 846 /** 847 * @left: Left margin in pixels. 848 */ 849 unsigned int left; 850 851 /** 852 * @right: Right margin in pixels. 853 */ 854 unsigned int right; 855 856 /** 857 * @top: Top margin in pixels. 858 */ 859 unsigned int top; 860 }; 861 862 /** 863 * struct drm_tv_connector_state - TV connector related states 864 * @select_subconnector: selected subconnector 865 * @subconnector: detected subconnector 866 * @margins: TV margins 867 * @legacy_mode: Legacy TV mode, driver specific value 868 * @mode: TV mode 869 * @brightness: brightness in percent 870 * @contrast: contrast in percent 871 * @flicker_reduction: flicker reduction in percent 872 * @overscan: overscan in percent 873 * @saturation: saturation in percent 874 * @hue: hue in percent 875 */ 876 struct drm_tv_connector_state { 877 enum drm_mode_subconnector select_subconnector; 878 enum drm_mode_subconnector subconnector; 879 struct drm_connector_tv_margins margins; 880 unsigned int legacy_mode; 881 unsigned int mode; 882 unsigned int brightness; 883 unsigned int contrast; 884 unsigned int flicker_reduction; 885 unsigned int overscan; 886 unsigned int saturation; 887 unsigned int hue; 888 }; 889 890 /** 891 * struct drm_connector_state - mutable connector state 892 */ 893 struct drm_connector_state { 894 /** @connector: backpointer to the connector */ 895 struct drm_connector *connector; 896 897 /** 898 * @crtc: CRTC to connect connector to, NULL if disabled. 899 * 900 * Do not change this directly, use drm_atomic_set_crtc_for_connector() 901 * instead. 902 */ 903 struct drm_crtc *crtc; 904 905 /** 906 * @best_encoder: 907 * 908 * Used by the atomic helpers to select the encoder, through the 909 * &drm_connector_helper_funcs.atomic_best_encoder or 910 * &drm_connector_helper_funcs.best_encoder callbacks. 911 * 912 * This is also used in the atomic helpers to map encoders to their 913 * current and previous connectors, see 914 * drm_atomic_get_old_connector_for_encoder() and 915 * drm_atomic_get_new_connector_for_encoder(). 916 * 917 * NOTE: Atomic drivers must fill this out (either themselves or through 918 * helpers), for otherwise the GETCONNECTOR and GETENCODER IOCTLs will 919 * not return correct data to userspace. 920 */ 921 struct drm_encoder *best_encoder; 922 923 /** 924 * @link_status: Connector link_status to keep track of whether link is 925 * GOOD or BAD to notify userspace if retraining is necessary. 926 */ 927 enum drm_link_status link_status; 928 929 /** @state: backpointer to global drm_atomic_state */ 930 struct drm_atomic_state *state; 931 932 /** 933 * @commit: Tracks the pending commit to prevent use-after-free conditions. 934 * 935 * Is only set when @crtc is NULL. 936 */ 937 struct drm_crtc_commit *commit; 938 939 /** @tv: TV connector state */ 940 struct drm_tv_connector_state tv; 941 942 /** 943 * @self_refresh_aware: 944 * 945 * This tracks whether a connector is aware of the self refresh state. 946 * It should be set to true for those connector implementations which 947 * understand the self refresh state. This is needed since the crtc 948 * registers the self refresh helpers and it doesn't know if the 949 * connectors downstream have implemented self refresh entry/exit. 950 * 951 * Drivers should set this to true in atomic_check if they know how to 952 * handle self_refresh requests. 953 */ 954 bool self_refresh_aware; 955 956 /** 957 * @picture_aspect_ratio: Connector property to control the 958 * HDMI infoframe aspect ratio setting. 959 * 960 * The %DRM_MODE_PICTURE_ASPECT_\* values much match the 961 * values for &enum hdmi_picture_aspect 962 */ 963 enum hdmi_picture_aspect picture_aspect_ratio; 964 965 /** 966 * @content_type: Connector property to control the 967 * HDMI infoframe content type setting. 968 * The %DRM_MODE_CONTENT_TYPE_\* values much 969 * match the values. 970 */ 971 unsigned int content_type; 972 973 /** 974 * @hdcp_content_type: Connector property to pass the type of 975 * protected content. This is most commonly used for HDCP. 976 */ 977 unsigned int hdcp_content_type; 978 979 /** 980 * @scaling_mode: Connector property to control the 981 * upscaling, mostly used for built-in panels. 982 */ 983 unsigned int scaling_mode; 984 985 /** 986 * @content_protection: Connector property to request content 987 * protection. This is most commonly used for HDCP. 988 */ 989 unsigned int content_protection; 990 991 /** 992 * @colorspace: State variable for Connector property to request 993 * colorspace change on Sink. This is most commonly used to switch 994 * to wider color gamuts like BT2020. 995 */ 996 enum drm_colorspace colorspace; 997 998 /** 999 * @writeback_job: Writeback job for writeback connectors 1000 * 1001 * Holds the framebuffer and out-fence for a writeback connector. As 1002 * the writeback completion may be asynchronous to the normal commit 1003 * cycle, the writeback job lifetime is managed separately from the 1004 * normal atomic state by this object. 1005 * 1006 * See also: drm_writeback_queue_job() and 1007 * drm_writeback_signal_completion() 1008 */ 1009 struct drm_writeback_job *writeback_job; 1010 1011 /** 1012 * @max_requested_bpc: Connector property to limit the maximum bit 1013 * depth of the pixels. 1014 */ 1015 u8 max_requested_bpc; 1016 1017 /** 1018 * @max_bpc: Connector max_bpc based on the requested max_bpc property 1019 * and the connector bpc limitations obtained from edid. 1020 */ 1021 u8 max_bpc; 1022 1023 /** 1024 * @privacy_screen_sw_state: See :ref:`Standard Connector 1025 * Properties<standard_connector_properties>` 1026 */ 1027 enum drm_privacy_screen_status privacy_screen_sw_state; 1028 1029 /** 1030 * @hdr_output_metadata: 1031 * DRM blob property for HDR output metadata 1032 */ 1033 struct drm_property_blob *hdr_output_metadata; 1034 }; 1035 1036 /** 1037 * struct drm_connector_funcs - control connectors on a given device 1038 * 1039 * Each CRTC may have one or more connectors attached to it. The functions 1040 * below allow the core DRM code to control connectors, enumerate available modes, 1041 * etc. 1042 */ 1043 struct drm_connector_funcs { 1044 /** 1045 * @dpms: 1046 * 1047 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS 1048 * is exposed as a standard property on the connector, but diverted to 1049 * this callback in the drm core. Note that atomic drivers don't 1050 * implement the 4 level DPMS support on the connector any more, but 1051 * instead only have an on/off "ACTIVE" property on the CRTC object. 1052 * 1053 * This hook is not used by atomic drivers, remapping of the legacy DPMS 1054 * property is entirely handled in the DRM core. 1055 * 1056 * RETURNS: 1057 * 1058 * 0 on success or a negative error code on failure. 1059 */ 1060 int (*dpms)(struct drm_connector *connector, int mode); 1061 1062 /** 1063 * @reset: 1064 * 1065 * Reset connector hardware and software state to off. This function isn't 1066 * called by the core directly, only through drm_mode_config_reset(). 1067 * It's not a helper hook only for historical reasons. 1068 * 1069 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset 1070 * atomic state using this hook. 1071 */ 1072 void (*reset)(struct drm_connector *connector); 1073 1074 /** 1075 * @detect: 1076 * 1077 * Check to see if anything is attached to the connector. The parameter 1078 * force is set to false whilst polling, true when checking the 1079 * connector due to a user request. force can be used by the driver to 1080 * avoid expensive, destructive operations during automated probing. 1081 * 1082 * This callback is optional, if not implemented the connector will be 1083 * considered as always being attached. 1084 * 1085 * FIXME: 1086 * 1087 * Note that this hook is only called by the probe helper. It's not in 1088 * the helper library vtable purely for historical reasons. The only DRM 1089 * core entry point to probe connector state is @fill_modes. 1090 * 1091 * Note that the helper library will already hold 1092 * &drm_mode_config.connection_mutex. Drivers which need to grab additional 1093 * locks to avoid races with concurrent modeset changes need to use 1094 * &drm_connector_helper_funcs.detect_ctx instead. 1095 * 1096 * Also note that this callback can be called no matter the 1097 * state the connector is in. Drivers that need the underlying 1098 * device to be powered to perform the detection will first need 1099 * to make sure it's been properly enabled. 1100 * 1101 * RETURNS: 1102 * 1103 * drm_connector_status indicating the connector's status. 1104 */ 1105 enum drm_connector_status (*detect)(struct drm_connector *connector, 1106 bool force); 1107 1108 /** 1109 * @force: 1110 * 1111 * This function is called to update internal encoder state when the 1112 * connector is forced to a certain state by userspace, either through 1113 * the sysfs interfaces or on the kernel cmdline. In that case the 1114 * @detect callback isn't called. 1115 * 1116 * FIXME: 1117 * 1118 * Note that this hook is only called by the probe helper. It's not in 1119 * the helper library vtable purely for historical reasons. The only DRM 1120 * core entry point to probe connector state is @fill_modes. 1121 */ 1122 void (*force)(struct drm_connector *connector); 1123 1124 /** 1125 * @fill_modes: 1126 * 1127 * Entry point for output detection and basic mode validation. The 1128 * driver should reprobe the output if needed (e.g. when hotplug 1129 * handling is unreliable), add all detected modes to &drm_connector.modes 1130 * and filter out any the device can't support in any configuration. It 1131 * also needs to filter out any modes wider or higher than the 1132 * parameters max_width and max_height indicate. 1133 * 1134 * The drivers must also prune any modes no longer valid from 1135 * &drm_connector.modes. Furthermore it must update 1136 * &drm_connector.status and &drm_connector.edid. If no EDID has been 1137 * received for this output connector->edid must be NULL. 1138 * 1139 * Drivers using the probe helpers should use 1140 * drm_helper_probe_single_connector_modes() to implement this 1141 * function. 1142 * 1143 * RETURNS: 1144 * 1145 * The number of modes detected and filled into &drm_connector.modes. 1146 */ 1147 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 1148 1149 /** 1150 * @set_property: 1151 * 1152 * This is the legacy entry point to update a property attached to the 1153 * connector. 1154 * 1155 * This callback is optional if the driver does not support any legacy 1156 * driver-private properties. For atomic drivers it is not used because 1157 * property handling is done entirely in the DRM core. 1158 * 1159 * RETURNS: 1160 * 1161 * 0 on success or a negative error code on failure. 1162 */ 1163 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 1164 uint64_t val); 1165 1166 /** 1167 * @late_register: 1168 * 1169 * This optional hook can be used to register additional userspace 1170 * interfaces attached to the connector, light backlight control, i2c, 1171 * DP aux or similar interfaces. It is called late in the driver load 1172 * sequence from drm_connector_register() when registering all the 1173 * core drm connector interfaces. Everything added from this callback 1174 * should be unregistered in the early_unregister callback. 1175 * 1176 * This is called while holding &drm_connector.mutex. 1177 * 1178 * Returns: 1179 * 1180 * 0 on success, or a negative error code on failure. 1181 */ 1182 int (*late_register)(struct drm_connector *connector); 1183 1184 /** 1185 * @early_unregister: 1186 * 1187 * This optional hook should be used to unregister the additional 1188 * userspace interfaces attached to the connector from 1189 * late_register(). It is called from drm_connector_unregister(), 1190 * early in the driver unload sequence to disable userspace access 1191 * before data structures are torndown. 1192 * 1193 * This is called while holding &drm_connector.mutex. 1194 */ 1195 void (*early_unregister)(struct drm_connector *connector); 1196 1197 /** 1198 * @destroy: 1199 * 1200 * Clean up connector resources. This is called at driver unload time 1201 * through drm_mode_config_cleanup(). It can also be called at runtime 1202 * when a connector is being hot-unplugged for drivers that support 1203 * connector hotplugging (e.g. DisplayPort MST). 1204 */ 1205 void (*destroy)(struct drm_connector *connector); 1206 1207 /** 1208 * @atomic_duplicate_state: 1209 * 1210 * Duplicate the current atomic state for this connector and return it. 1211 * The core and helpers guarantee that any atomic state duplicated with 1212 * this hook and still owned by the caller (i.e. not transferred to the 1213 * driver by calling &drm_mode_config_funcs.atomic_commit) will be 1214 * cleaned up by calling the @atomic_destroy_state hook in this 1215 * structure. 1216 * 1217 * This callback is mandatory for atomic drivers. 1218 * 1219 * Atomic drivers which don't subclass &struct drm_connector_state should use 1220 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the 1221 * state structure to extend it with driver-private state should use 1222 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is 1223 * duplicated in a consistent fashion across drivers. 1224 * 1225 * It is an error to call this hook before &drm_connector.state has been 1226 * initialized correctly. 1227 * 1228 * NOTE: 1229 * 1230 * If the duplicate state references refcounted resources this hook must 1231 * acquire a reference for each of them. The driver must release these 1232 * references again in @atomic_destroy_state. 1233 * 1234 * RETURNS: 1235 * 1236 * Duplicated atomic state or NULL when the allocation failed. 1237 */ 1238 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 1239 1240 /** 1241 * @atomic_destroy_state: 1242 * 1243 * Destroy a state duplicated with @atomic_duplicate_state and release 1244 * or unreference all resources it references 1245 * 1246 * This callback is mandatory for atomic drivers. 1247 */ 1248 void (*atomic_destroy_state)(struct drm_connector *connector, 1249 struct drm_connector_state *state); 1250 1251 /** 1252 * @atomic_set_property: 1253 * 1254 * Decode a driver-private property value and store the decoded value 1255 * into the passed-in state structure. Since the atomic core decodes all 1256 * standardized properties (even for extensions beyond the core set of 1257 * properties which might not be implemented by all drivers) this 1258 * requires drivers to subclass the state structure. 1259 * 1260 * Such driver-private properties should really only be implemented for 1261 * truly hardware/vendor specific state. Instead it is preferred to 1262 * standardize atomic extension and decode the properties used to expose 1263 * such an extension in the core. 1264 * 1265 * Do not call this function directly, use 1266 * drm_atomic_connector_set_property() instead. 1267 * 1268 * This callback is optional if the driver does not support any 1269 * driver-private atomic properties. 1270 * 1271 * NOTE: 1272 * 1273 * This function is called in the state assembly phase of atomic 1274 * modesets, which can be aborted for any reason (including on 1275 * userspace's request to just check whether a configuration would be 1276 * possible). Drivers MUST NOT touch any persistent state (hardware or 1277 * software) or data structures except the passed in @state parameter. 1278 * 1279 * Also since userspace controls in which order properties are set this 1280 * function must not do any input validation (since the state update is 1281 * incomplete and hence likely inconsistent). Instead any such input 1282 * validation must be done in the various atomic_check callbacks. 1283 * 1284 * RETURNS: 1285 * 1286 * 0 if the property has been found, -EINVAL if the property isn't 1287 * implemented by the driver (which shouldn't ever happen, the core only 1288 * asks for properties attached to this connector). No other validation 1289 * is allowed by the driver. The core already checks that the property 1290 * value is within the range (integer, valid enum value, ...) the driver 1291 * set when registering the property. 1292 */ 1293 int (*atomic_set_property)(struct drm_connector *connector, 1294 struct drm_connector_state *state, 1295 struct drm_property *property, 1296 uint64_t val); 1297 1298 /** 1299 * @atomic_get_property: 1300 * 1301 * Reads out the decoded driver-private property. This is used to 1302 * implement the GETCONNECTOR IOCTL. 1303 * 1304 * Do not call this function directly, use 1305 * drm_atomic_connector_get_property() instead. 1306 * 1307 * This callback is optional if the driver does not support any 1308 * driver-private atomic properties. 1309 * 1310 * RETURNS: 1311 * 1312 * 0 on success, -EINVAL if the property isn't implemented by the 1313 * driver (which shouldn't ever happen, the core only asks for 1314 * properties attached to this connector). 1315 */ 1316 int (*atomic_get_property)(struct drm_connector *connector, 1317 const struct drm_connector_state *state, 1318 struct drm_property *property, 1319 uint64_t *val); 1320 1321 /** 1322 * @atomic_print_state: 1323 * 1324 * If driver subclasses &struct drm_connector_state, it should implement 1325 * this optional hook for printing additional driver specific state. 1326 * 1327 * Do not call this directly, use drm_atomic_connector_print_state() 1328 * instead. 1329 */ 1330 void (*atomic_print_state)(struct drm_printer *p, 1331 const struct drm_connector_state *state); 1332 1333 /** 1334 * @oob_hotplug_event: 1335 * 1336 * This will get called when a hotplug-event for a drm-connector 1337 * has been received from a source outside the display driver / device. 1338 */ 1339 void (*oob_hotplug_event)(struct drm_connector *connector); 1340 1341 /** 1342 * @debugfs_init: 1343 * 1344 * Allows connectors to create connector-specific debugfs files. 1345 */ 1346 void (*debugfs_init)(struct drm_connector *connector, struct dentry *root); 1347 }; 1348 1349 /** 1350 * struct drm_cmdline_mode - DRM Mode passed through the kernel command-line 1351 * 1352 * Each connector can have an initial mode with additional options 1353 * passed through the kernel command line. This structure allows to 1354 * express those parameters and will be filled by the command-line 1355 * parser. 1356 */ 1357 struct drm_cmdline_mode { 1358 /** 1359 * @name: 1360 * 1361 * Name of the mode. 1362 */ 1363 char name[DRM_DISPLAY_MODE_LEN]; 1364 1365 /** 1366 * @specified: 1367 * 1368 * Has a mode been read from the command-line? 1369 */ 1370 bool specified; 1371 1372 /** 1373 * @refresh_specified: 1374 * 1375 * Did the mode have a preferred refresh rate? 1376 */ 1377 bool refresh_specified; 1378 1379 /** 1380 * @bpp_specified: 1381 * 1382 * Did the mode have a preferred BPP? 1383 */ 1384 bool bpp_specified; 1385 1386 /** 1387 * @pixel_clock: 1388 * 1389 * Pixel Clock in kHz. Optional. 1390 */ 1391 unsigned int pixel_clock; 1392 1393 /** 1394 * @xres: 1395 * 1396 * Active resolution on the X axis, in pixels. 1397 */ 1398 int xres; 1399 1400 /** 1401 * @yres: 1402 * 1403 * Active resolution on the Y axis, in pixels. 1404 */ 1405 int yres; 1406 1407 /** 1408 * @bpp: 1409 * 1410 * Bits per pixels for the mode. 1411 */ 1412 int bpp; 1413 1414 /** 1415 * @refresh: 1416 * 1417 * Refresh rate, in Hertz. 1418 */ 1419 int refresh; 1420 1421 /** 1422 * @rb: 1423 * 1424 * Do we need to use reduced blanking? 1425 */ 1426 bool rb; 1427 1428 /** 1429 * @interlace: 1430 * 1431 * The mode is interlaced. 1432 */ 1433 bool interlace; 1434 1435 /** 1436 * @cvt: 1437 * 1438 * The timings will be calculated using the VESA Coordinated 1439 * Video Timings instead of looking up the mode from a table. 1440 */ 1441 bool cvt; 1442 1443 /** 1444 * @margins: 1445 * 1446 * Add margins to the mode calculation (1.8% of xres rounded 1447 * down to 8 pixels and 1.8% of yres). 1448 */ 1449 bool margins; 1450 1451 /** 1452 * @force: 1453 * 1454 * Ignore the hotplug state of the connector, and force its 1455 * state to one of the DRM_FORCE_* values. 1456 */ 1457 enum drm_connector_force force; 1458 1459 /** 1460 * @rotation_reflection: 1461 * 1462 * Initial rotation and reflection of the mode setup from the 1463 * command line. See DRM_MODE_ROTATE_* and 1464 * DRM_MODE_REFLECT_*. The only rotations supported are 1465 * DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180. 1466 */ 1467 unsigned int rotation_reflection; 1468 1469 /** 1470 * @panel_orientation: 1471 * 1472 * drm-connector "panel orientation" property override value, 1473 * DRM_MODE_PANEL_ORIENTATION_UNKNOWN if not set. 1474 */ 1475 enum drm_panel_orientation panel_orientation; 1476 1477 /** 1478 * @tv_margins: TV margins to apply to the mode. 1479 */ 1480 struct drm_connector_tv_margins tv_margins; 1481 1482 /** 1483 * @tv_mode: TV mode standard. See DRM_MODE_TV_MODE_*. 1484 */ 1485 enum drm_connector_tv_mode tv_mode; 1486 1487 /** 1488 * @tv_mode_specified: 1489 * 1490 * Did the mode have a preferred TV mode? 1491 */ 1492 bool tv_mode_specified; 1493 }; 1494 1495 /** 1496 * struct drm_connector - central DRM connector control structure 1497 * 1498 * Each connector may be connected to one or more CRTCs, or may be clonable by 1499 * another connector if they can share a CRTC. Each connector also has a specific 1500 * position in the broader display (referred to as a 'screen' though it could 1501 * span multiple monitors). 1502 */ 1503 struct drm_connector { 1504 /** @dev: parent DRM device */ 1505 struct drm_device *dev; 1506 /** @kdev: kernel device for sysfs attributes */ 1507 struct device *kdev; 1508 /** @attr: sysfs attributes */ 1509 struct device_attribute *attr; 1510 /** 1511 * @fwnode: associated fwnode supplied by platform firmware 1512 * 1513 * Drivers can set this to associate a fwnode with a connector, drivers 1514 * are expected to get a reference on the fwnode when setting this. 1515 * drm_connector_cleanup() will call fwnode_handle_put() on this. 1516 */ 1517 struct fwnode_handle *fwnode; 1518 1519 /** 1520 * @head: 1521 * 1522 * List of all connectors on a @dev, linked from 1523 * &drm_mode_config.connector_list. Protected by 1524 * &drm_mode_config.connector_list_lock, but please only use 1525 * &drm_connector_list_iter to walk this list. 1526 */ 1527 struct list_head head; 1528 1529 /** 1530 * @global_connector_list_entry: 1531 * 1532 * Connector entry in the global connector-list, used by 1533 * drm_connector_find_by_fwnode(). 1534 */ 1535 struct list_head global_connector_list_entry; 1536 1537 /** @base: base KMS object */ 1538 struct drm_mode_object base; 1539 1540 /** @name: human readable name, can be overwritten by the driver */ 1541 char *name; 1542 1543 /** 1544 * @mutex: Lock for general connector state, but currently only protects 1545 * @registered. Most of the connector state is still protected by 1546 * &drm_mode_config.mutex. 1547 */ 1548 struct mutex mutex; 1549 1550 /** 1551 * @index: Compacted connector index, which matches the position inside 1552 * the mode_config.list for drivers not supporting hot-add/removing. Can 1553 * be used as an array index. It is invariant over the lifetime of the 1554 * connector. 1555 */ 1556 unsigned index; 1557 1558 /** 1559 * @connector_type: 1560 * one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 1561 */ 1562 int connector_type; 1563 /** @connector_type_id: index into connector type enum */ 1564 int connector_type_id; 1565 /** 1566 * @interlace_allowed: 1567 * Can this connector handle interlaced modes? Only used by 1568 * drm_helper_probe_single_connector_modes() for mode filtering. 1569 */ 1570 bool interlace_allowed; 1571 /** 1572 * @doublescan_allowed: 1573 * Can this connector handle doublescan? Only used by 1574 * drm_helper_probe_single_connector_modes() for mode filtering. 1575 */ 1576 bool doublescan_allowed; 1577 /** 1578 * @stereo_allowed: 1579 * Can this connector handle stereo modes? Only used by 1580 * drm_helper_probe_single_connector_modes() for mode filtering. 1581 */ 1582 bool stereo_allowed; 1583 1584 /** 1585 * @ycbcr_420_allowed : This bool indicates if this connector is 1586 * capable of handling YCBCR 420 output. While parsing the EDID 1587 * blocks it's very helpful to know if the source is capable of 1588 * handling YCBCR 420 outputs. 1589 */ 1590 bool ycbcr_420_allowed; 1591 1592 /** 1593 * @registration_state: Is this connector initializing, exposed 1594 * (registered) with userspace, or unregistered? 1595 * 1596 * Protected by @mutex. 1597 */ 1598 enum drm_connector_registration_state registration_state; 1599 1600 /** 1601 * @modes: 1602 * Modes available on this connector (from fill_modes() + user). 1603 * Protected by &drm_mode_config.mutex. 1604 */ 1605 struct list_head modes; 1606 1607 /** 1608 * @status: 1609 * One of the drm_connector_status enums (connected, not, or unknown). 1610 * Protected by &drm_mode_config.mutex. 1611 */ 1612 enum drm_connector_status status; 1613 1614 /** 1615 * @probed_modes: 1616 * These are modes added by probing with DDC or the BIOS, before 1617 * filtering is applied. Used by the probe helpers. Protected by 1618 * &drm_mode_config.mutex. 1619 */ 1620 struct list_head probed_modes; 1621 1622 /** 1623 * @display_info: Display information is filled from EDID information 1624 * when a display is detected. For non hot-pluggable displays such as 1625 * flat panels in embedded systems, the driver should initialize the 1626 * &drm_display_info.width_mm and &drm_display_info.height_mm fields 1627 * with the physical size of the display. 1628 * 1629 * Protected by &drm_mode_config.mutex. 1630 */ 1631 struct drm_display_info display_info; 1632 1633 /** @funcs: connector control functions */ 1634 const struct drm_connector_funcs *funcs; 1635 1636 /** 1637 * @edid_blob_ptr: DRM property containing EDID if present. Protected by 1638 * &drm_mode_config.mutex. This should be updated only by calling 1639 * drm_connector_update_edid_property(). 1640 */ 1641 struct drm_property_blob *edid_blob_ptr; 1642 1643 /** @properties: property tracking for this connector */ 1644 struct drm_object_properties properties; 1645 1646 /** 1647 * @scaling_mode_property: Optional atomic property to control the 1648 * upscaling. See drm_connector_attach_content_protection_property(). 1649 */ 1650 struct drm_property *scaling_mode_property; 1651 1652 /** 1653 * @vrr_capable_property: Optional property to help userspace 1654 * query hardware support for variable refresh rate on a connector. 1655 * connector. Drivers can add the property to a connector by 1656 * calling drm_connector_attach_vrr_capable_property(). 1657 * 1658 * This should be updated only by calling 1659 * drm_connector_set_vrr_capable_property(). 1660 */ 1661 struct drm_property *vrr_capable_property; 1662 1663 /** 1664 * @colorspace_property: Connector property to set the suitable 1665 * colorspace supported by the sink. 1666 */ 1667 struct drm_property *colorspace_property; 1668 1669 /** 1670 * @path_blob_ptr: 1671 * 1672 * DRM blob property data for the DP MST path property. This should only 1673 * be updated by calling drm_connector_set_path_property(). 1674 */ 1675 struct drm_property_blob *path_blob_ptr; 1676 1677 /** 1678 * @max_bpc_property: Default connector property for the max bpc to be 1679 * driven out of the connector. 1680 */ 1681 struct drm_property *max_bpc_property; 1682 1683 /** @privacy_screen: drm_privacy_screen for this connector, or NULL. */ 1684 struct drm_privacy_screen *privacy_screen; 1685 1686 /** @privacy_screen_notifier: privacy-screen notifier_block */ 1687 struct notifier_block privacy_screen_notifier; 1688 1689 /** 1690 * @privacy_screen_sw_state_property: Optional atomic property for the 1691 * connector to control the integrated privacy screen. 1692 */ 1693 struct drm_property *privacy_screen_sw_state_property; 1694 1695 /** 1696 * @privacy_screen_hw_state_property: Optional atomic property for the 1697 * connector to report the actual integrated privacy screen state. 1698 */ 1699 struct drm_property *privacy_screen_hw_state_property; 1700 1701 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 1702 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 1703 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 1704 1705 /** 1706 * @polled: 1707 * 1708 * Connector polling mode, a combination of 1709 * 1710 * DRM_CONNECTOR_POLL_HPD 1711 * The connector generates hotplug events and doesn't need to be 1712 * periodically polled. The CONNECT and DISCONNECT flags must not 1713 * be set together with the HPD flag. 1714 * 1715 * DRM_CONNECTOR_POLL_CONNECT 1716 * Periodically poll the connector for connection. 1717 * 1718 * DRM_CONNECTOR_POLL_DISCONNECT 1719 * Periodically poll the connector for disconnection, without 1720 * causing flickering even when the connector is in use. DACs should 1721 * rarely do this without a lot of testing. 1722 * 1723 * Set to 0 for connectors that don't support connection status 1724 * discovery. 1725 */ 1726 uint8_t polled; 1727 1728 /** 1729 * @dpms: Current dpms state. For legacy drivers the 1730 * &drm_connector_funcs.dpms callback must update this. For atomic 1731 * drivers, this is handled by the core atomic code, and drivers must 1732 * only take &drm_crtc_state.active into account. 1733 */ 1734 int dpms; 1735 1736 /** @helper_private: mid-layer private data */ 1737 const struct drm_connector_helper_funcs *helper_private; 1738 1739 /** @cmdline_mode: mode line parsed from the kernel cmdline for this connector */ 1740 struct drm_cmdline_mode cmdline_mode; 1741 /** @force: a DRM_FORCE_<foo> state for forced mode sets */ 1742 enum drm_connector_force force; 1743 1744 /** 1745 * @edid_override: Override EDID set via debugfs. 1746 * 1747 * Do not modify or access outside of the drm_edid_override_* family of 1748 * functions. 1749 */ 1750 const struct drm_edid *edid_override; 1751 1752 /** 1753 * @edid_override_mutex: Protect access to edid_override. 1754 */ 1755 struct mutex edid_override_mutex; 1756 1757 /** @epoch_counter: used to detect any other changes in connector, besides status */ 1758 u64 epoch_counter; 1759 1760 /** 1761 * @possible_encoders: Bit mask of encoders that can drive this 1762 * connector, drm_encoder_index() determines the index into the bitfield 1763 * and the bits are set with drm_connector_attach_encoder(). 1764 */ 1765 u32 possible_encoders; 1766 1767 /** 1768 * @encoder: Currently bound encoder driving this connector, if any. 1769 * Only really meaningful for non-atomic drivers. Atomic drivers should 1770 * instead look at &drm_connector_state.best_encoder, and in case they 1771 * need the CRTC driving this output, &drm_connector_state.crtc. 1772 */ 1773 struct drm_encoder *encoder; 1774 1775 #define MAX_ELD_BYTES 128 1776 /** @eld: EDID-like data, if present */ 1777 uint8_t eld[MAX_ELD_BYTES]; 1778 /** @latency_present: AV delay info from ELD, if found */ 1779 bool latency_present[2]; 1780 /** 1781 * @video_latency: Video latency info from ELD, if found. 1782 * [0]: progressive, [1]: interlaced 1783 */ 1784 int video_latency[2]; 1785 /** 1786 * @audio_latency: audio latency info from ELD, if found 1787 * [0]: progressive, [1]: interlaced 1788 */ 1789 int audio_latency[2]; 1790 1791 /** 1792 * @ddc: associated ddc adapter. 1793 * A connector usually has its associated ddc adapter. If a driver uses 1794 * this field, then an appropriate symbolic link is created in connector 1795 * sysfs directory to make it easy for the user to tell which i2c 1796 * adapter is for a particular display. 1797 * 1798 * The field should be set by calling drm_connector_init_with_ddc(). 1799 */ 1800 struct i2c_adapter *ddc; 1801 1802 /** 1803 * @null_edid_counter: track sinks that give us all zeros for the EDID. 1804 * Needed to workaround some HW bugs where we get all 0s 1805 */ 1806 int null_edid_counter; 1807 1808 /** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */ 1809 unsigned bad_edid_counter; 1810 1811 /** 1812 * @edid_corrupt: Indicates whether the last read EDID was corrupt. Used 1813 * in Displayport compliance testing - Displayport Link CTS Core 1.2 1814 * rev1.1 4.2.2.6 1815 */ 1816 bool edid_corrupt; 1817 /** 1818 * @real_edid_checksum: real edid checksum for corrupted edid block. 1819 * Required in Displayport 1.4 compliance testing 1820 * rev1.1 4.2.2.6 1821 */ 1822 u8 real_edid_checksum; 1823 1824 /** @debugfs_entry: debugfs directory for this connector */ 1825 struct dentry *debugfs_entry; 1826 1827 /** 1828 * @state: 1829 * 1830 * Current atomic state for this connector. 1831 * 1832 * This is protected by &drm_mode_config.connection_mutex. Note that 1833 * nonblocking atomic commits access the current connector state without 1834 * taking locks. Either by going through the &struct drm_atomic_state 1835 * pointers, see for_each_oldnew_connector_in_state(), 1836 * for_each_old_connector_in_state() and 1837 * for_each_new_connector_in_state(). Or through careful ordering of 1838 * atomic commit operations as implemented in the atomic helpers, see 1839 * &struct drm_crtc_commit. 1840 */ 1841 struct drm_connector_state *state; 1842 1843 /* DisplayID bits. FIXME: Extract into a substruct? */ 1844 1845 /** 1846 * @tile_blob_ptr: 1847 * 1848 * DRM blob property data for the tile property (used mostly by DP MST). 1849 * This is meant for screens which are driven through separate display 1850 * pipelines represented by &drm_crtc, which might not be running with 1851 * genlocked clocks. For tiled panels which are genlocked, like 1852 * dual-link LVDS or dual-link DSI, the driver should try to not expose 1853 * the tiling and virtualize both &drm_crtc and &drm_plane if needed. 1854 * 1855 * This should only be updated by calling 1856 * drm_connector_set_tile_property(). 1857 */ 1858 struct drm_property_blob *tile_blob_ptr; 1859 1860 /** @has_tile: is this connector connected to a tiled monitor */ 1861 bool has_tile; 1862 /** @tile_group: tile group for the connected monitor */ 1863 struct drm_tile_group *tile_group; 1864 /** @tile_is_single_monitor: whether the tile is one monitor housing */ 1865 bool tile_is_single_monitor; 1866 1867 /** @num_h_tile: number of horizontal tiles in the tile group */ 1868 /** @num_v_tile: number of vertical tiles in the tile group */ 1869 uint8_t num_h_tile, num_v_tile; 1870 /** @tile_h_loc: horizontal location of this tile */ 1871 /** @tile_v_loc: vertical location of this tile */ 1872 uint8_t tile_h_loc, tile_v_loc; 1873 /** @tile_h_size: horizontal size of this tile. */ 1874 /** @tile_v_size: vertical size of this tile. */ 1875 uint16_t tile_h_size, tile_v_size; 1876 1877 /** 1878 * @free_node: 1879 * 1880 * List used only by &drm_connector_list_iter to be able to clean up a 1881 * connector from any context, in conjunction with 1882 * &drm_mode_config.connector_free_work. 1883 */ 1884 struct llist_node free_node; 1885 1886 /** @hdr_sink_metadata: HDR Metadata Information read from sink */ 1887 struct hdr_sink_metadata hdr_sink_metadata; 1888 }; 1889 1890 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 1891 1892 int drm_connector_init(struct drm_device *dev, 1893 struct drm_connector *connector, 1894 const struct drm_connector_funcs *funcs, 1895 int connector_type); 1896 int drm_connector_init_with_ddc(struct drm_device *dev, 1897 struct drm_connector *connector, 1898 const struct drm_connector_funcs *funcs, 1899 int connector_type, 1900 struct i2c_adapter *ddc); 1901 int drmm_connector_init(struct drm_device *dev, 1902 struct drm_connector *connector, 1903 const struct drm_connector_funcs *funcs, 1904 int connector_type, 1905 struct i2c_adapter *ddc); 1906 void drm_connector_attach_edid_property(struct drm_connector *connector); 1907 int drm_connector_register(struct drm_connector *connector); 1908 void drm_connector_unregister(struct drm_connector *connector); 1909 int drm_connector_attach_encoder(struct drm_connector *connector, 1910 struct drm_encoder *encoder); 1911 1912 void drm_connector_cleanup(struct drm_connector *connector); 1913 1914 static inline unsigned int drm_connector_index(const struct drm_connector *connector) 1915 { 1916 return connector->index; 1917 } 1918 1919 static inline u32 drm_connector_mask(const struct drm_connector *connector) 1920 { 1921 return 1 << connector->index; 1922 } 1923 1924 /** 1925 * drm_connector_lookup - lookup connector object 1926 * @dev: DRM device 1927 * @file_priv: drm file to check for lease against. 1928 * @id: connector object id 1929 * 1930 * This function looks up the connector object specified by id 1931 * add takes a reference to it. 1932 */ 1933 static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev, 1934 struct drm_file *file_priv, 1935 uint32_t id) 1936 { 1937 struct drm_mode_object *mo; 1938 mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CONNECTOR); 1939 return mo ? obj_to_connector(mo) : NULL; 1940 } 1941 1942 /** 1943 * drm_connector_get - acquire a connector reference 1944 * @connector: DRM connector 1945 * 1946 * This function increments the connector's refcount. 1947 */ 1948 static inline void drm_connector_get(struct drm_connector *connector) 1949 { 1950 drm_mode_object_get(&connector->base); 1951 } 1952 1953 /** 1954 * drm_connector_put - release a connector reference 1955 * @connector: DRM connector 1956 * 1957 * This function decrements the connector's reference count and frees the 1958 * object if the reference count drops to zero. 1959 */ 1960 static inline void drm_connector_put(struct drm_connector *connector) 1961 { 1962 drm_mode_object_put(&connector->base); 1963 } 1964 1965 /** 1966 * drm_connector_is_unregistered - has the connector been unregistered from 1967 * userspace? 1968 * @connector: DRM connector 1969 * 1970 * Checks whether or not @connector has been unregistered from userspace. 1971 * 1972 * Returns: 1973 * True if the connector was unregistered, false if the connector is 1974 * registered or has not yet been registered with userspace. 1975 */ 1976 static inline bool 1977 drm_connector_is_unregistered(struct drm_connector *connector) 1978 { 1979 return READ_ONCE(connector->registration_state) == 1980 DRM_CONNECTOR_UNREGISTERED; 1981 } 1982 1983 void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode); 1984 const char *drm_get_connector_type_name(unsigned int connector_type); 1985 const char *drm_get_connector_status_name(enum drm_connector_status status); 1986 const char *drm_get_subpixel_order_name(enum subpixel_order order); 1987 const char *drm_get_dpms_name(int val); 1988 const char *drm_get_dvi_i_subconnector_name(int val); 1989 const char *drm_get_dvi_i_select_name(int val); 1990 const char *drm_get_tv_mode_name(int val); 1991 const char *drm_get_tv_subconnector_name(int val); 1992 const char *drm_get_tv_select_name(int val); 1993 const char *drm_get_dp_subconnector_name(int val); 1994 const char *drm_get_content_protection_name(int val); 1995 const char *drm_get_hdcp_content_type_name(int val); 1996 1997 int drm_get_tv_mode_from_name(const char *name, size_t len); 1998 1999 int drm_mode_create_dvi_i_properties(struct drm_device *dev); 2000 void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector); 2001 2002 int drm_mode_create_tv_margin_properties(struct drm_device *dev); 2003 int drm_mode_create_tv_properties_legacy(struct drm_device *dev, 2004 unsigned int num_modes, 2005 const char * const modes[]); 2006 int drm_mode_create_tv_properties(struct drm_device *dev, 2007 unsigned int supported_tv_modes); 2008 void drm_connector_attach_tv_margin_properties(struct drm_connector *conn); 2009 int drm_mode_create_scaling_mode_property(struct drm_device *dev); 2010 int drm_connector_attach_content_type_property(struct drm_connector *dev); 2011 int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, 2012 u32 scaling_mode_mask); 2013 int drm_connector_attach_vrr_capable_property( 2014 struct drm_connector *connector); 2015 int drm_connector_attach_colorspace_property(struct drm_connector *connector); 2016 int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector); 2017 bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state, 2018 struct drm_connector_state *new_state); 2019 int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 2020 int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector, 2021 u32 supported_colorspaces); 2022 int drm_mode_create_dp_colorspace_property(struct drm_connector *connector, 2023 u32 supported_colorspaces); 2024 int drm_mode_create_content_type_property(struct drm_device *dev); 2025 int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 2026 2027 int drm_connector_set_path_property(struct drm_connector *connector, 2028 const char *path); 2029 int drm_connector_set_tile_property(struct drm_connector *connector); 2030 int drm_connector_update_edid_property(struct drm_connector *connector, 2031 const struct edid *edid); 2032 void drm_connector_set_link_status_property(struct drm_connector *connector, 2033 uint64_t link_status); 2034 void drm_connector_set_vrr_capable_property( 2035 struct drm_connector *connector, bool capable); 2036 int drm_connector_set_panel_orientation( 2037 struct drm_connector *connector, 2038 enum drm_panel_orientation panel_orientation); 2039 int drm_connector_set_panel_orientation_with_quirk( 2040 struct drm_connector *connector, 2041 enum drm_panel_orientation panel_orientation, 2042 int width, int height); 2043 int drm_connector_set_orientation_from_panel( 2044 struct drm_connector *connector, 2045 struct drm_panel *panel); 2046 int drm_connector_attach_max_bpc_property(struct drm_connector *connector, 2047 int min, int max); 2048 void drm_connector_create_privacy_screen_properties(struct drm_connector *conn); 2049 void drm_connector_attach_privacy_screen_properties(struct drm_connector *conn); 2050 void drm_connector_attach_privacy_screen_provider( 2051 struct drm_connector *connector, struct drm_privacy_screen *priv); 2052 void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state); 2053 2054 /** 2055 * struct drm_tile_group - Tile group metadata 2056 * @refcount: reference count 2057 * @dev: DRM device 2058 * @id: tile group id exposed to userspace 2059 * @group_data: Sink-private data identifying this group 2060 * 2061 * @group_data corresponds to displayid vend/prod/serial for external screens 2062 * with an EDID. 2063 */ 2064 struct drm_tile_group { 2065 struct kref refcount; 2066 struct drm_device *dev; 2067 int id; 2068 u8 group_data[8]; 2069 }; 2070 2071 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 2072 const char topology[8]); 2073 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 2074 const char topology[8]); 2075 void drm_mode_put_tile_group(struct drm_device *dev, 2076 struct drm_tile_group *tg); 2077 2078 /** 2079 * struct drm_connector_list_iter - connector_list iterator 2080 * 2081 * This iterator tracks state needed to be able to walk the connector_list 2082 * within struct drm_mode_config. Only use together with 2083 * drm_connector_list_iter_begin(), drm_connector_list_iter_end() and 2084 * drm_connector_list_iter_next() respectively the convenience macro 2085 * drm_for_each_connector_iter(). 2086 * 2087 * Note that the return value of drm_connector_list_iter_next() is only valid 2088 * up to the next drm_connector_list_iter_next() or 2089 * drm_connector_list_iter_end() call. If you want to use the connector later, 2090 * then you need to grab your own reference first using drm_connector_get(). 2091 */ 2092 struct drm_connector_list_iter { 2093 /* private: */ 2094 struct drm_device *dev; 2095 struct drm_connector *conn; 2096 }; 2097 2098 void drm_connector_list_iter_begin(struct drm_device *dev, 2099 struct drm_connector_list_iter *iter); 2100 struct drm_connector * 2101 drm_connector_list_iter_next(struct drm_connector_list_iter *iter); 2102 void drm_connector_list_iter_end(struct drm_connector_list_iter *iter); 2103 2104 bool drm_connector_has_possible_encoder(struct drm_connector *connector, 2105 struct drm_encoder *encoder); 2106 const char *drm_get_colorspace_name(enum drm_colorspace colorspace); 2107 2108 /** 2109 * drm_for_each_connector_iter - connector_list iterator macro 2110 * @connector: &struct drm_connector pointer used as cursor 2111 * @iter: &struct drm_connector_list_iter 2112 * 2113 * Note that @connector is only valid within the list body, if you want to use 2114 * @connector after calling drm_connector_list_iter_end() then you need to grab 2115 * your own reference first using drm_connector_get(). 2116 */ 2117 #define drm_for_each_connector_iter(connector, iter) \ 2118 while ((connector = drm_connector_list_iter_next(iter))) 2119 2120 /** 2121 * drm_connector_for_each_possible_encoder - iterate connector's possible encoders 2122 * @connector: &struct drm_connector pointer 2123 * @encoder: &struct drm_encoder pointer used as cursor 2124 */ 2125 #define drm_connector_for_each_possible_encoder(connector, encoder) \ 2126 drm_for_each_encoder_mask(encoder, (connector)->dev, \ 2127 (connector)->possible_encoders) 2128 2129 #endif 2130