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
37struct drm_connector_helper_funcs;
38struct drm_modeset_acquire_ctx;
39struct drm_device;
40struct drm_crtc;
41struct drm_encoder;
42struct drm_panel;
43struct drm_property;
44struct drm_property_blob;
45struct drm_printer;
46struct drm_privacy_screen;
47struct edid;
48struct i2c_adapter;
49
50enum 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 */
63enum 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 */
98enum 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
137enum 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 */
156enum 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 */
214struct 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 */
231struct 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 */
253struct 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 */
293struct 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 */
337enum 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 */
363enum 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 */
383struct 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 */
399struct 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 */
421enum 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 */
504enum 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 */
548enum 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 */
652struct 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
830int 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 */
840struct 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 */
876struct 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 */
893struct 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 */
1043struct 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 enum drm_connector_status status);
1341
1342 /**
1343 * @debugfs_init:
1344 *
1345 * Allows connectors to create connector-specific debugfs files.
1346 */
1347 void (*debugfs_init)(struct drm_connector *connector, struct dentry *root);
1348};
1349
1350/**
1351 * struct drm_cmdline_mode - DRM Mode passed through the kernel command-line
1352 *
1353 * Each connector can have an initial mode with additional options
1354 * passed through the kernel command line. This structure allows to
1355 * express those parameters and will be filled by the command-line
1356 * parser.
1357 */
1358struct drm_cmdline_mode {
1359 /**
1360 * @name:
1361 *
1362 * Name of the mode.
1363 */
1364 char name[DRM_DISPLAY_MODE_LEN];
1365
1366 /**
1367 * @specified:
1368 *
1369 * Has a mode been read from the command-line?
1370 */
1371 bool specified;
1372
1373 /**
1374 * @refresh_specified:
1375 *
1376 * Did the mode have a preferred refresh rate?
1377 */
1378 bool refresh_specified;
1379
1380 /**
1381 * @bpp_specified:
1382 *
1383 * Did the mode have a preferred BPP?
1384 */
1385 bool bpp_specified;
1386
1387 /**
1388 * @pixel_clock:
1389 *
1390 * Pixel Clock in kHz. Optional.
1391 */
1392 unsigned int pixel_clock;
1393
1394 /**
1395 * @xres:
1396 *
1397 * Active resolution on the X axis, in pixels.
1398 */
1399 int xres;
1400
1401 /**
1402 * @yres:
1403 *
1404 * Active resolution on the Y axis, in pixels.
1405 */
1406 int yres;
1407
1408 /**
1409 * @bpp:
1410 *
1411 * Bits per pixels for the mode.
1412 */
1413 int bpp;
1414
1415 /**
1416 * @refresh:
1417 *
1418 * Refresh rate, in Hertz.
1419 */
1420 int refresh;
1421
1422 /**
1423 * @rb:
1424 *
1425 * Do we need to use reduced blanking?
1426 */
1427 bool rb;
1428
1429 /**
1430 * @interlace:
1431 *
1432 * The mode is interlaced.
1433 */
1434 bool interlace;
1435
1436 /**
1437 * @cvt:
1438 *
1439 * The timings will be calculated using the VESA Coordinated
1440 * Video Timings instead of looking up the mode from a table.
1441 */
1442 bool cvt;
1443
1444 /**
1445 * @margins:
1446 *
1447 * Add margins to the mode calculation (1.8% of xres rounded
1448 * down to 8 pixels and 1.8% of yres).
1449 */
1450 bool margins;
1451
1452 /**
1453 * @force:
1454 *
1455 * Ignore the hotplug state of the connector, and force its
1456 * state to one of the DRM_FORCE_* values.
1457 */
1458 enum drm_connector_force force;
1459
1460 /**
1461 * @rotation_reflection:
1462 *
1463 * Initial rotation and reflection of the mode setup from the
1464 * command line. See DRM_MODE_ROTATE_* and
1465 * DRM_MODE_REFLECT_*. The only rotations supported are
1466 * DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180.
1467 */
1468 unsigned int rotation_reflection;
1469
1470 /**
1471 * @panel_orientation:
1472 *
1473 * drm-connector "panel orientation" property override value,
1474 * DRM_MODE_PANEL_ORIENTATION_UNKNOWN if not set.
1475 */
1476 enum drm_panel_orientation panel_orientation;
1477
1478 /**
1479 * @tv_margins: TV margins to apply to the mode.
1480 */
1481 struct drm_connector_tv_margins tv_margins;
1482
1483 /**
1484 * @tv_mode: TV mode standard. See DRM_MODE_TV_MODE_*.
1485 */
1486 enum drm_connector_tv_mode tv_mode;
1487
1488 /**
1489 * @tv_mode_specified:
1490 *
1491 * Did the mode have a preferred TV mode?
1492 */
1493 bool tv_mode_specified;
1494};
1495
1496/**
1497 * struct drm_connector - central DRM connector control structure
1498 *
1499 * Each connector may be connected to one or more CRTCs, or may be clonable by
1500 * another connector if they can share a CRTC. Each connector also has a specific
1501 * position in the broader display (referred to as a 'screen' though it could
1502 * span multiple monitors).
1503 */
1504struct drm_connector {
1505 /** @dev: parent DRM device */
1506 struct drm_device *dev;
1507 /** @kdev: kernel device for sysfs attributes */
1508 struct device *kdev;
1509 /** @attr: sysfs attributes */
1510 struct device_attribute *attr;
1511 /**
1512 * @fwnode: associated fwnode supplied by platform firmware
1513 *
1514 * Drivers can set this to associate a fwnode with a connector, drivers
1515 * are expected to get a reference on the fwnode when setting this.
1516 * drm_connector_cleanup() will call fwnode_handle_put() on this.
1517 */
1518 struct fwnode_handle *fwnode;
1519
1520 /**
1521 * @head:
1522 *
1523 * List of all connectors on a @dev, linked from
1524 * &drm_mode_config.connector_list. Protected by
1525 * &drm_mode_config.connector_list_lock, but please only use
1526 * &drm_connector_list_iter to walk this list.
1527 */
1528 struct list_head head;
1529
1530 /**
1531 * @global_connector_list_entry:
1532 *
1533 * Connector entry in the global connector-list, used by
1534 * drm_connector_find_by_fwnode().
1535 */
1536 struct list_head global_connector_list_entry;
1537
1538 /** @base: base KMS object */
1539 struct drm_mode_object base;
1540
1541 /** @name: human readable name, can be overwritten by the driver */
1542 char *name;
1543
1544 /**
1545 * @mutex: Lock for general connector state, but currently only protects
1546 * @registered. Most of the connector state is still protected by
1547 * &drm_mode_config.mutex.
1548 */
1549 struct mutex mutex;
1550
1551 /**
1552 * @index: Compacted connector index, which matches the position inside
1553 * the mode_config.list for drivers not supporting hot-add/removing. Can
1554 * be used as an array index. It is invariant over the lifetime of the
1555 * connector.
1556 */
1557 unsigned index;
1558
1559 /**
1560 * @connector_type:
1561 * one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
1562 */
1563 int connector_type;
1564 /** @connector_type_id: index into connector type enum */
1565 int connector_type_id;
1566 /**
1567 * @interlace_allowed:
1568 * Can this connector handle interlaced modes? Only used by
1569 * drm_helper_probe_single_connector_modes() for mode filtering.
1570 */
1571 bool interlace_allowed;
1572 /**
1573 * @doublescan_allowed:
1574 * Can this connector handle doublescan? Only used by
1575 * drm_helper_probe_single_connector_modes() for mode filtering.
1576 */
1577 bool doublescan_allowed;
1578 /**
1579 * @stereo_allowed:
1580 * Can this connector handle stereo modes? Only used by
1581 * drm_helper_probe_single_connector_modes() for mode filtering.
1582 */
1583 bool stereo_allowed;
1584
1585 /**
1586 * @ycbcr_420_allowed : This bool indicates if this connector is
1587 * capable of handling YCBCR 420 output. While parsing the EDID
1588 * blocks it's very helpful to know if the source is capable of
1589 * handling YCBCR 420 outputs.
1590 */
1591 bool ycbcr_420_allowed;
1592
1593 /**
1594 * @registration_state: Is this connector initializing, exposed
1595 * (registered) with userspace, or unregistered?
1596 *
1597 * Protected by @mutex.
1598 */
1599 enum drm_connector_registration_state registration_state;
1600
1601 /**
1602 * @modes:
1603 * Modes available on this connector (from fill_modes() + user).
1604 * Protected by &drm_mode_config.mutex.
1605 */
1606 struct list_head modes;
1607
1608 /**
1609 * @status:
1610 * One of the drm_connector_status enums (connected, not, or unknown).
1611 * Protected by &drm_mode_config.mutex.
1612 */
1613 enum drm_connector_status status;
1614
1615 /**
1616 * @probed_modes:
1617 * These are modes added by probing with DDC or the BIOS, before
1618 * filtering is applied. Used by the probe helpers. Protected by
1619 * &drm_mode_config.mutex.
1620 */
1621 struct list_head probed_modes;
1622
1623 /**
1624 * @display_info: Display information is filled from EDID information
1625 * when a display is detected. For non hot-pluggable displays such as
1626 * flat panels in embedded systems, the driver should initialize the
1627 * &drm_display_info.width_mm and &drm_display_info.height_mm fields
1628 * with the physical size of the display.
1629 *
1630 * Protected by &drm_mode_config.mutex.
1631 */
1632 struct drm_display_info display_info;
1633
1634 /** @funcs: connector control functions */
1635 const struct drm_connector_funcs *funcs;
1636
1637 /**
1638 * @edid_blob_ptr: DRM property containing EDID if present. Protected by
1639 * &drm_mode_config.mutex. This should be updated only by calling
1640 * drm_connector_update_edid_property().
1641 */
1642 struct drm_property_blob *edid_blob_ptr;
1643
1644 /** @properties: property tracking for this connector */
1645 struct drm_object_properties properties;
1646
1647 /**
1648 * @scaling_mode_property: Optional atomic property to control the
1649 * upscaling. See drm_connector_attach_content_protection_property().
1650 */
1651 struct drm_property *scaling_mode_property;
1652
1653 /**
1654 * @vrr_capable_property: Optional property to help userspace
1655 * query hardware support for variable refresh rate on a connector.
1656 * connector. Drivers can add the property to a connector by
1657 * calling drm_connector_attach_vrr_capable_property().
1658 *
1659 * This should be updated only by calling
1660 * drm_connector_set_vrr_capable_property().
1661 */
1662 struct drm_property *vrr_capable_property;
1663
1664 /**
1665 * @colorspace_property: Connector property to set the suitable
1666 * colorspace supported by the sink.
1667 */
1668 struct drm_property *colorspace_property;
1669
1670 /**
1671 * @path_blob_ptr:
1672 *
1673 * DRM blob property data for the DP MST path property. This should only
1674 * be updated by calling drm_connector_set_path_property().
1675 */
1676 struct drm_property_blob *path_blob_ptr;
1677
1678 /**
1679 * @max_bpc_property: Default connector property for the max bpc to be
1680 * driven out of the connector.
1681 */
1682 struct drm_property *max_bpc_property;
1683
1684 /** @privacy_screen: drm_privacy_screen for this connector, or NULL. */
1685 struct drm_privacy_screen *privacy_screen;
1686
1687 /** @privacy_screen_notifier: privacy-screen notifier_block */
1688 struct notifier_block privacy_screen_notifier;
1689
1690 /**
1691 * @privacy_screen_sw_state_property: Optional atomic property for the
1692 * connector to control the integrated privacy screen.
1693 */
1694 struct drm_property *privacy_screen_sw_state_property;
1695
1696 /**
1697 * @privacy_screen_hw_state_property: Optional atomic property for the
1698 * connector to report the actual integrated privacy screen state.
1699 */
1700 struct drm_property *privacy_screen_hw_state_property;
1701
1702#define DRM_CONNECTOR_POLL_HPD (1 << 0)
1703#define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
1704#define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
1705
1706 /**
1707 * @polled:
1708 *
1709 * Connector polling mode, a combination of
1710 *
1711 * DRM_CONNECTOR_POLL_HPD
1712 * The connector generates hotplug events and doesn't need to be
1713 * periodically polled. The CONNECT and DISCONNECT flags must not
1714 * be set together with the HPD flag.
1715 *
1716 * DRM_CONNECTOR_POLL_CONNECT
1717 * Periodically poll the connector for connection.
1718 *
1719 * DRM_CONNECTOR_POLL_DISCONNECT
1720 * Periodically poll the connector for disconnection, without
1721 * causing flickering even when the connector is in use. DACs should
1722 * rarely do this without a lot of testing.
1723 *
1724 * Set to 0 for connectors that don't support connection status
1725 * discovery.
1726 */
1727 uint8_t polled;
1728
1729 /**
1730 * @dpms: Current dpms state. For legacy drivers the
1731 * &drm_connector_funcs.dpms callback must update this. For atomic
1732 * drivers, this is handled by the core atomic code, and drivers must
1733 * only take &drm_crtc_state.active into account.
1734 */
1735 int dpms;
1736
1737 /** @helper_private: mid-layer private data */
1738 const struct drm_connector_helper_funcs *helper_private;
1739
1740 /** @cmdline_mode: mode line parsed from the kernel cmdline for this connector */
1741 struct drm_cmdline_mode cmdline_mode;
1742 /** @force: a DRM_FORCE_<foo> state for forced mode sets */
1743 enum drm_connector_force force;
1744
1745 /**
1746 * @edid_override: Override EDID set via debugfs.
1747 *
1748 * Do not modify or access outside of the drm_edid_override_* family of
1749 * functions.
1750 */
1751 const struct drm_edid *edid_override;
1752
1753 /**
1754 * @edid_override_mutex: Protect access to edid_override.
1755 */
1756 struct mutex edid_override_mutex;
1757
1758 /** @epoch_counter: used to detect any other changes in connector, besides status */
1759 u64 epoch_counter;
1760
1761 /**
1762 * @possible_encoders: Bit mask of encoders that can drive this
1763 * connector, drm_encoder_index() determines the index into the bitfield
1764 * and the bits are set with drm_connector_attach_encoder().
1765 */
1766 u32 possible_encoders;
1767
1768 /**
1769 * @encoder: Currently bound encoder driving this connector, if any.
1770 * Only really meaningful for non-atomic drivers. Atomic drivers should
1771 * instead look at &drm_connector_state.best_encoder, and in case they
1772 * need the CRTC driving this output, &drm_connector_state.crtc.
1773 */
1774 struct drm_encoder *encoder;
1775
1776#define MAX_ELD_BYTES 128
1777 /** @eld: EDID-like data, if present */
1778 uint8_t eld[MAX_ELD_BYTES];
1779 /** @latency_present: AV delay info from ELD, if found */
1780 bool latency_present[2];
1781 /**
1782 * @video_latency: Video latency info from ELD, if found.
1783 * [0]: progressive, [1]: interlaced
1784 */
1785 int video_latency[2];
1786 /**
1787 * @audio_latency: audio latency info from ELD, if found
1788 * [0]: progressive, [1]: interlaced
1789 */
1790 int audio_latency[2];
1791
1792 /**
1793 * @ddc: associated ddc adapter.
1794 * A connector usually has its associated ddc adapter. If a driver uses
1795 * this field, then an appropriate symbolic link is created in connector
1796 * sysfs directory to make it easy for the user to tell which i2c
1797 * adapter is for a particular display.
1798 *
1799 * The field should be set by calling drm_connector_init_with_ddc().
1800 */
1801 struct i2c_adapter *ddc;
1802
1803 /**
1804 * @null_edid_counter: track sinks that give us all zeros for the EDID.
1805 * Needed to workaround some HW bugs where we get all 0s
1806 */
1807 int null_edid_counter;
1808
1809 /** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */
1810 unsigned bad_edid_counter;
1811
1812 /**
1813 * @edid_corrupt: Indicates whether the last read EDID was corrupt. Used
1814 * in Displayport compliance testing - Displayport Link CTS Core 1.2
1815 * rev1.1 4.2.2.6
1816 */
1817 bool edid_corrupt;
1818 /**
1819 * @real_edid_checksum: real edid checksum for corrupted edid block.
1820 * Required in Displayport 1.4 compliance testing
1821 * rev1.1 4.2.2.6
1822 */
1823 u8 real_edid_checksum;
1824
1825 /** @debugfs_entry: debugfs directory for this connector */
1826 struct dentry *debugfs_entry;
1827
1828 /**
1829 * @state:
1830 *
1831 * Current atomic state for this connector.
1832 *
1833 * This is protected by &drm_mode_config.connection_mutex. Note that
1834 * nonblocking atomic commits access the current connector state without
1835 * taking locks. Either by going through the &struct drm_atomic_state
1836 * pointers, see for_each_oldnew_connector_in_state(),
1837 * for_each_old_connector_in_state() and
1838 * for_each_new_connector_in_state(). Or through careful ordering of
1839 * atomic commit operations as implemented in the atomic helpers, see
1840 * &struct drm_crtc_commit.
1841 */
1842 struct drm_connector_state *state;
1843
1844 /* DisplayID bits. FIXME: Extract into a substruct? */
1845
1846 /**
1847 * @tile_blob_ptr:
1848 *
1849 * DRM blob property data for the tile property (used mostly by DP MST).
1850 * This is meant for screens which are driven through separate display
1851 * pipelines represented by &drm_crtc, which might not be running with
1852 * genlocked clocks. For tiled panels which are genlocked, like
1853 * dual-link LVDS or dual-link DSI, the driver should try to not expose
1854 * the tiling and virtualize both &drm_crtc and &drm_plane if needed.
1855 *
1856 * This should only be updated by calling
1857 * drm_connector_set_tile_property().
1858 */
1859 struct drm_property_blob *tile_blob_ptr;
1860
1861 /** @has_tile: is this connector connected to a tiled monitor */
1862 bool has_tile;
1863 /** @tile_group: tile group for the connected monitor */
1864 struct drm_tile_group *tile_group;
1865 /** @tile_is_single_monitor: whether the tile is one monitor housing */
1866 bool tile_is_single_monitor;
1867
1868 /** @num_h_tile: number of horizontal tiles in the tile group */
1869 /** @num_v_tile: number of vertical tiles in the tile group */
1870 uint8_t num_h_tile, num_v_tile;
1871 /** @tile_h_loc: horizontal location of this tile */
1872 /** @tile_v_loc: vertical location of this tile */
1873 uint8_t tile_h_loc, tile_v_loc;
1874 /** @tile_h_size: horizontal size of this tile. */
1875 /** @tile_v_size: vertical size of this tile. */
1876 uint16_t tile_h_size, tile_v_size;
1877
1878 /**
1879 * @free_node:
1880 *
1881 * List used only by &drm_connector_list_iter to be able to clean up a
1882 * connector from any context, in conjunction with
1883 * &drm_mode_config.connector_free_work.
1884 */
1885 struct llist_node free_node;
1886
1887 /** @hdr_sink_metadata: HDR Metadata Information read from sink */
1888 struct hdr_sink_metadata hdr_sink_metadata;
1889};
1890
1891#define obj_to_connector(x) container_of(x, struct drm_connector, base)
1892
1893int drm_connector_init(struct drm_device *dev,
1894 struct drm_connector *connector,
1895 const struct drm_connector_funcs *funcs,
1896 int connector_type);
1897int drm_connector_init_with_ddc(struct drm_device *dev,
1898 struct drm_connector *connector,
1899 const struct drm_connector_funcs *funcs,
1900 int connector_type,
1901 struct i2c_adapter *ddc);
1902int drmm_connector_init(struct drm_device *dev,
1903 struct drm_connector *connector,
1904 const struct drm_connector_funcs *funcs,
1905 int connector_type,
1906 struct i2c_adapter *ddc);
1907void drm_connector_attach_edid_property(struct drm_connector *connector);
1908int drm_connector_register(struct drm_connector *connector);
1909void drm_connector_unregister(struct drm_connector *connector);
1910int drm_connector_attach_encoder(struct drm_connector *connector,
1911 struct drm_encoder *encoder);
1912
1913void drm_connector_cleanup(struct drm_connector *connector);
1914
1915static inline unsigned int drm_connector_index(const struct drm_connector *connector)
1916{
1917 return connector->index;
1918}
1919
1920static inline u32 drm_connector_mask(const struct drm_connector *connector)
1921{
1922 return 1 << connector->index;
1923}
1924
1925/**
1926 * drm_connector_lookup - lookup connector object
1927 * @dev: DRM device
1928 * @file_priv: drm file to check for lease against.
1929 * @id: connector object id
1930 *
1931 * This function looks up the connector object specified by id
1932 * add takes a reference to it.
1933 */
1934static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev,
1935 struct drm_file *file_priv,
1936 uint32_t id)
1937{
1938 struct drm_mode_object *mo;
1939 mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CONNECTOR);
1940 return mo ? obj_to_connector(mo) : NULL;
1941}
1942
1943/**
1944 * drm_connector_get - acquire a connector reference
1945 * @connector: DRM connector
1946 *
1947 * This function increments the connector's refcount.
1948 */
1949static inline void drm_connector_get(struct drm_connector *connector)
1950{
1951 drm_mode_object_get(obj: &connector->base);
1952}
1953
1954/**
1955 * drm_connector_put - release a connector reference
1956 * @connector: DRM connector
1957 *
1958 * This function decrements the connector's reference count and frees the
1959 * object if the reference count drops to zero.
1960 */
1961static inline void drm_connector_put(struct drm_connector *connector)
1962{
1963 drm_mode_object_put(obj: &connector->base);
1964}
1965
1966/**
1967 * drm_connector_is_unregistered - has the connector been unregistered from
1968 * userspace?
1969 * @connector: DRM connector
1970 *
1971 * Checks whether or not @connector has been unregistered from userspace.
1972 *
1973 * Returns:
1974 * True if the connector was unregistered, false if the connector is
1975 * registered or has not yet been registered with userspace.
1976 */
1977static inline bool
1978drm_connector_is_unregistered(struct drm_connector *connector)
1979{
1980 return READ_ONCE(connector->registration_state) ==
1981 DRM_CONNECTOR_UNREGISTERED;
1982}
1983
1984void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode,
1985 enum drm_connector_status status);
1986const char *drm_get_connector_type_name(unsigned int connector_type);
1987const char *drm_get_connector_status_name(enum drm_connector_status status);
1988const char *drm_get_subpixel_order_name(enum subpixel_order order);
1989const char *drm_get_dpms_name(int val);
1990const char *drm_get_dvi_i_subconnector_name(int val);
1991const char *drm_get_dvi_i_select_name(int val);
1992const char *drm_get_tv_mode_name(int val);
1993const char *drm_get_tv_subconnector_name(int val);
1994const char *drm_get_tv_select_name(int val);
1995const char *drm_get_dp_subconnector_name(int val);
1996const char *drm_get_content_protection_name(int val);
1997const char *drm_get_hdcp_content_type_name(int val);
1998
1999int drm_get_tv_mode_from_name(const char *name, size_t len);
2000
2001int drm_mode_create_dvi_i_properties(struct drm_device *dev);
2002void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector);
2003
2004int drm_mode_create_tv_margin_properties(struct drm_device *dev);
2005int drm_mode_create_tv_properties_legacy(struct drm_device *dev,
2006 unsigned int num_modes,
2007 const char * const modes[]);
2008int drm_mode_create_tv_properties(struct drm_device *dev,
2009 unsigned int supported_tv_modes);
2010void drm_connector_attach_tv_margin_properties(struct drm_connector *conn);
2011int drm_mode_create_scaling_mode_property(struct drm_device *dev);
2012int drm_connector_attach_content_type_property(struct drm_connector *dev);
2013int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
2014 u32 scaling_mode_mask);
2015int drm_connector_attach_vrr_capable_property(
2016 struct drm_connector *connector);
2017int drm_connector_attach_colorspace_property(struct drm_connector *connector);
2018int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector);
2019bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state,
2020 struct drm_connector_state *new_state);
2021int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
2022int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector,
2023 u32 supported_colorspaces);
2024int drm_mode_create_dp_colorspace_property(struct drm_connector *connector,
2025 u32 supported_colorspaces);
2026int drm_mode_create_content_type_property(struct drm_device *dev);
2027int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
2028
2029int drm_connector_set_path_property(struct drm_connector *connector,
2030 const char *path);
2031int drm_connector_set_tile_property(struct drm_connector *connector);
2032int drm_connector_update_edid_property(struct drm_connector *connector,
2033 const struct edid *edid);
2034void drm_connector_set_link_status_property(struct drm_connector *connector,
2035 uint64_t link_status);
2036void drm_connector_set_vrr_capable_property(
2037 struct drm_connector *connector, bool capable);
2038int drm_connector_set_panel_orientation(
2039 struct drm_connector *connector,
2040 enum drm_panel_orientation panel_orientation);
2041int drm_connector_set_panel_orientation_with_quirk(
2042 struct drm_connector *connector,
2043 enum drm_panel_orientation panel_orientation,
2044 int width, int height);
2045int drm_connector_set_orientation_from_panel(
2046 struct drm_connector *connector,
2047 struct drm_panel *panel);
2048int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
2049 int min, int max);
2050void drm_connector_create_privacy_screen_properties(struct drm_connector *conn);
2051void drm_connector_attach_privacy_screen_properties(struct drm_connector *conn);
2052void drm_connector_attach_privacy_screen_provider(
2053 struct drm_connector *connector, struct drm_privacy_screen *priv);
2054void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state);
2055
2056/**
2057 * struct drm_tile_group - Tile group metadata
2058 * @refcount: reference count
2059 * @dev: DRM device
2060 * @id: tile group id exposed to userspace
2061 * @group_data: Sink-private data identifying this group
2062 *
2063 * @group_data corresponds to displayid vend/prod/serial for external screens
2064 * with an EDID.
2065 */
2066struct drm_tile_group {
2067 struct kref refcount;
2068 struct drm_device *dev;
2069 int id;
2070 u8 group_data[8];
2071};
2072
2073struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
2074 const char topology[8]);
2075struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
2076 const char topology[8]);
2077void drm_mode_put_tile_group(struct drm_device *dev,
2078 struct drm_tile_group *tg);
2079
2080/**
2081 * struct drm_connector_list_iter - connector_list iterator
2082 *
2083 * This iterator tracks state needed to be able to walk the connector_list
2084 * within struct drm_mode_config. Only use together with
2085 * drm_connector_list_iter_begin(), drm_connector_list_iter_end() and
2086 * drm_connector_list_iter_next() respectively the convenience macro
2087 * drm_for_each_connector_iter().
2088 *
2089 * Note that the return value of drm_connector_list_iter_next() is only valid
2090 * up to the next drm_connector_list_iter_next() or
2091 * drm_connector_list_iter_end() call. If you want to use the connector later,
2092 * then you need to grab your own reference first using drm_connector_get().
2093 */
2094struct drm_connector_list_iter {
2095/* private: */
2096 struct drm_device *dev;
2097 struct drm_connector *conn;
2098};
2099
2100void drm_connector_list_iter_begin(struct drm_device *dev,
2101 struct drm_connector_list_iter *iter);
2102struct drm_connector *
2103drm_connector_list_iter_next(struct drm_connector_list_iter *iter);
2104void drm_connector_list_iter_end(struct drm_connector_list_iter *iter);
2105
2106bool drm_connector_has_possible_encoder(struct drm_connector *connector,
2107 struct drm_encoder *encoder);
2108const char *drm_get_colorspace_name(enum drm_colorspace colorspace);
2109
2110/**
2111 * drm_for_each_connector_iter - connector_list iterator macro
2112 * @connector: &struct drm_connector pointer used as cursor
2113 * @iter: &struct drm_connector_list_iter
2114 *
2115 * Note that @connector is only valid within the list body, if you want to use
2116 * @connector after calling drm_connector_list_iter_end() then you need to grab
2117 * your own reference first using drm_connector_get().
2118 */
2119#define drm_for_each_connector_iter(connector, iter) \
2120 while ((connector = drm_connector_list_iter_next(iter)))
2121
2122/**
2123 * drm_connector_for_each_possible_encoder - iterate connector's possible encoders
2124 * @connector: &struct drm_connector pointer
2125 * @encoder: &struct drm_encoder pointer used as cursor
2126 */
2127#define drm_connector_for_each_possible_encoder(connector, encoder) \
2128 drm_for_each_encoder_mask(encoder, (connector)->dev, \
2129 (connector)->possible_encoders)
2130
2131#endif
2132

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source code of linux/include/drm/drm_connector.h