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	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	*/
1358	struct 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	*/
1504	struct 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
1893	int drm_connector_init(struct drm_device *dev,
1894	struct drm_connector *connector,
1895	const struct drm_connector_funcs *funcs,
1896	int connector_type);
1897	int 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);
1902	int 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);
1907	void drm_connector_attach_edid_property(struct drm_connector *connector);
1908	int drm_connector_register(struct drm_connector *connector);
1909	void drm_connector_unregister(struct drm_connector *connector);
1910	int drm_connector_attach_encoder(struct drm_connector *connector,
1911	struct drm_encoder *encoder);
1912
1913	void drm_connector_cleanup(struct drm_connector *connector);
1914
1915	static inline unsigned int drm_connector_index(const struct drm_connector *connector)
1916	{
1917	return connector->index;
1918	}
1919
1920	static 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	*/
1934	static 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	*/
1949	static 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	*/
1961	static 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	*/
1977	static inline bool
1978	drm_connector_is_unregistered(struct drm_connector *connector)
1979	{
1980	return READ_ONCE(connector->registration_state) ==
1981	DRM_CONNECTOR_UNREGISTERED;
1982	}
1983
1984	void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode,
1985	enum drm_connector_status status);
1986	const char *drm_get_connector_type_name(unsigned int connector_type);
1987	const char *drm_get_connector_status_name(enum drm_connector_status status);
1988	const char *drm_get_subpixel_order_name(enum subpixel_order order);
1989	const char *drm_get_dpms_name(int val);
1990	const char *drm_get_dvi_i_subconnector_name(int val);
1991	const char *drm_get_dvi_i_select_name(int val);
1992	const char *drm_get_tv_mode_name(int val);
1993	const char *drm_get_tv_subconnector_name(int val);
1994	const char *drm_get_tv_select_name(int val);
1995	const char *drm_get_dp_subconnector_name(int val);
1996	const char *drm_get_content_protection_name(int val);
1997	const char *drm_get_hdcp_content_type_name(int val);
1998
1999	int drm_get_tv_mode_from_name(const char *name, size_t len);
2000
2001	int drm_mode_create_dvi_i_properties(struct drm_device *dev);
2002	void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector);
2003
2004	int drm_mode_create_tv_margin_properties(struct drm_device *dev);
2005	int drm_mode_create_tv_properties_legacy(struct drm_device *dev,
2006	unsigned int num_modes,
2007	const char * const modes[]);
2008	int drm_mode_create_tv_properties(struct drm_device *dev,
2009	unsigned int supported_tv_modes);
2010	void drm_connector_attach_tv_margin_properties(struct drm_connector *conn);
2011	int drm_mode_create_scaling_mode_property(struct drm_device *dev);
2012	int drm_connector_attach_content_type_property(struct drm_connector *dev);
2013	int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
2014	u32 scaling_mode_mask);
2015	int drm_connector_attach_vrr_capable_property(
2016	struct drm_connector *connector);
2017	int drm_connector_attach_colorspace_property(struct drm_connector *connector);
2018	int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector);
2019	bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state,
2020	struct drm_connector_state *new_state);
2021	int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
2022	int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector,
2023	u32 supported_colorspaces);
2024	int drm_mode_create_dp_colorspace_property(struct drm_connector *connector,
2025	u32 supported_colorspaces);
2026	int drm_mode_create_content_type_property(struct drm_device *dev);
2027	int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
2028
2029	int drm_connector_set_path_property(struct drm_connector *connector,
2030	const char *path);
2031	int drm_connector_set_tile_property(struct drm_connector *connector);
2032	int drm_connector_update_edid_property(struct drm_connector *connector,
2033	const struct edid *edid);
2034	void drm_connector_set_link_status_property(struct drm_connector *connector,
2035	uint64_t link_status);
2036	void drm_connector_set_vrr_capable_property(
2037	struct drm_connector *connector, bool capable);
2038	int drm_connector_set_panel_orientation(
2039	struct drm_connector *connector,
2040	enum drm_panel_orientation panel_orientation);
2041	int drm_connector_set_panel_orientation_with_quirk(
2042	struct drm_connector *connector,
2043	enum drm_panel_orientation panel_orientation,
2044	int width, int height);
2045	int drm_connector_set_orientation_from_panel(
2046	struct drm_connector *connector,
2047	struct drm_panel *panel);
2048	int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
2049	int min, int max);
2050	void drm_connector_create_privacy_screen_properties(struct drm_connector *conn);
2051	void drm_connector_attach_privacy_screen_properties(struct drm_connector *conn);
2052	void drm_connector_attach_privacy_screen_provider(
2053	struct drm_connector *connector, struct drm_privacy_screen *priv);
2054	void 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	*/
2066	struct drm_tile_group {
2067	struct kref refcount;
2068	struct drm_device *dev;
2069	int id;
2070	u8 group_data[8];
2071	};
2072
2073	struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
2074	const char topology[8]);
2075	struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
2076	const char topology[8]);
2077	void 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	*/
2094	struct drm_connector_list_iter {
2095	/* private: */
2096	struct drm_device *dev;
2097	struct drm_connector *conn;
2098	};
2099
2100	void drm_connector_list_iter_begin(struct drm_device *dev,
2101	struct drm_connector_list_iter *iter);
2102	struct drm_connector *
2103	drm_connector_list_iter_next(struct drm_connector_list_iter *iter);
2104	void drm_connector_list_iter_end(struct drm_connector_list_iter *iter);
2105
2106	bool drm_connector_has_possible_encoder(struct drm_connector *connector,
2107	struct drm_encoder *encoder);
2108	const 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