2 * Copyright (c) 2016 Intel Corporation
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
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15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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23 #ifndef __DRM_CONNECTOR_H__
24 #define __DRM_CONNECTOR_H__
26 #include <linux/list.h>
27 #include <linux/ctype.h>
28 #include <linux/hdmi.h>
29 #include <drm/drm_mode_object.h>
31 #include <uapi/drm/drm_mode.h>
35 struct drm_connector_helper_funcs
;
36 struct drm_modeset_acquire_ctx
;
41 struct drm_property_blob
;
45 enum drm_connector_force
{
46 DRM_FORCE_UNSPECIFIED
,
48 DRM_FORCE_ON
, /* force on analog part normally */
49 DRM_FORCE_ON_DIGITAL
, /* for DVI-I use digital connector */
53 * enum drm_connector_status - status for a &drm_connector
55 * This enum is used to track the connector status. There are no separate
56 * #defines for the uapi!
58 enum drm_connector_status
{
60 * @connector_status_connected: The connector is definitely connected to
61 * a sink device, and can be enabled.
63 connector_status_connected
= 1,
65 * @connector_status_disconnected: The connector isn't connected to a
66 * sink device which can be autodetect. For digital outputs like DP or
67 * HDMI (which can be realiable probed) this means there's really
68 * nothing there. It is driver-dependent whether a connector with this
69 * status can be lit up or not.
71 connector_status_disconnected
= 2,
73 * @connector_status_unknown: The connector's status could not be
74 * reliably detected. This happens when probing would either cause
75 * flicker (like load-detection when the connector is in use), or when a
76 * hardware resource isn't available (like when load-detection needs a
77 * free CRTC). It should be possible to light up the connector with one
78 * of the listed fallback modes. For default configuration userspace
79 * should only try to light up connectors with unknown status when
80 * there's not connector with @connector_status_connected.
82 connector_status_unknown
= 3,
87 SubPixelHorizontalRGB
,
88 SubPixelHorizontalBGR
,
96 * struct drm_scrambling: sink's scrambling support.
98 struct drm_scrambling
{
100 * @supported: scrambling supported for rates > 340 Mhz.
104 * @low_rates: scrambling supported for rates <= 340 Mhz.
110 * struct drm_scdc - Information about scdc capabilities of a HDMI 2.0 sink
112 * Provides SCDC register support and capabilities related information on a
113 * HDMI 2.0 sink. In case of a HDMI 1.4 sink, all parameter must be 0.
117 * @supported: status control & data channel present.
121 * @read_request: sink is capable of generating scdc read request.
125 * @scrambling: sink's scrambling capabilities
127 struct drm_scrambling scrambling
;
132 * struct drm_hdmi_info - runtime information about the connected HDMI sink
134 * Describes if a given display supports advanced HDMI 2.0 features.
135 * This information is available in CEA-861-F extension blocks (like HF-VSDB).
137 struct drm_hdmi_info
{
138 /** @scdc: sink's scdc support and capabilities */
139 struct drm_scdc scdc
;
143 * enum drm_link_status - connector's link_status property value
145 * This enum is used as the connector's link status property value.
146 * It is set to the values defined in uapi.
148 * @DRM_LINK_STATUS_GOOD: DP Link is Good as a result of successful
150 * @DRM_LINK_STATUS_BAD: DP Link is BAD as a result of link training
153 enum drm_link_status
{
154 DRM_LINK_STATUS_GOOD
= DRM_MODE_LINK_STATUS_GOOD
,
155 DRM_LINK_STATUS_BAD
= DRM_MODE_LINK_STATUS_BAD
,
159 * struct drm_display_info - runtime data about the connected sink
161 * Describes a given display (e.g. CRT or flat panel) and its limitations. For
162 * fixed display sinks like built-in panels there's not much difference between
163 * this and &struct drm_connector. But for sinks with a real cable this
164 * structure is meant to describe all the things at the other end of the cable.
166 * For sinks which provide an EDID this can be filled out by calling
167 * drm_add_edid_modes().
169 struct drm_display_info
{
171 * @name: Name of the display.
173 char name
[DRM_DISPLAY_INFO_LEN
];
176 * @width_mm: Physical width in mm.
178 unsigned int width_mm
;
180 * @height_mm: Physical height in mm.
182 unsigned int height_mm
;
185 * @pixel_clock: Maximum pixel clock supported by the sink, in units of
186 * 100Hz. This mismatches the clock in &drm_display_mode (which is in
187 * kHZ), because that's what the EDID uses as base unit.
189 unsigned int pixel_clock
;
191 * @bpc: Maximum bits per color channel. Used by HDMI and DP outputs.
196 * @subpixel_order: Subpixel order of LCD panels.
198 enum subpixel_order subpixel_order
;
200 #define DRM_COLOR_FORMAT_RGB444 (1<<0)
201 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1)
202 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2)
205 * @color_formats: HDMI Color formats, selects between RGB and YCrCb
206 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones
207 * as used to describe the pixel format in framebuffers, and also don't
208 * match the formats in @bus_formats which are shared with v4l.
213 * @bus_formats: Pixel data format on the wire, somewhat redundant with
214 * @color_formats. Array of size @num_bus_formats encoded using
215 * MEDIA_BUS_FMT\_ defines shared with v4l and media drivers.
217 const u32
*bus_formats
;
219 * @num_bus_formats: Size of @bus_formats array.
221 unsigned int num_bus_formats
;
223 #define DRM_BUS_FLAG_DE_LOW (1<<0)
224 #define DRM_BUS_FLAG_DE_HIGH (1<<1)
225 /* drive data on pos. edge */
226 #define DRM_BUS_FLAG_PIXDATA_POSEDGE (1<<2)
227 /* drive data on neg. edge */
228 #define DRM_BUS_FLAG_PIXDATA_NEGEDGE (1<<3)
229 /* data is transmitted MSB to LSB on the bus */
230 #define DRM_BUS_FLAG_DATA_MSB_TO_LSB (1<<4)
231 /* data is transmitted LSB to MSB on the bus */
232 #define DRM_BUS_FLAG_DATA_LSB_TO_MSB (1<<5)
235 * @bus_flags: Additional information (like pixel signal polarity) for
236 * the pixel data on the bus, using DRM_BUS_FLAGS\_ defines.
241 * @max_tmds_clock: Maximum TMDS clock rate supported by the
242 * sink in kHz. 0 means undefined.
247 * @dvi_dual: Dual-link DVI sink?
252 * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even
253 * more stuff redundant with @bus_formats.
255 u8 edid_hdmi_dc_modes
;
258 * @cea_rev: CEA revision of the HDMI sink.
263 * @hdmi: advance features of a HDMI sink.
265 struct drm_hdmi_info hdmi
;
268 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
270 unsigned int num_formats
);
273 * struct drm_tv_connector_state - TV connector related states
274 * @subconnector: selected subconnector
275 * @margins: left/right/top/bottom margins
277 * @brightness: brightness in percent
278 * @contrast: contrast in percent
279 * @flicker_reduction: flicker reduction in percent
280 * @overscan: overscan in percent
281 * @saturation: saturation in percent
282 * @hue: hue in percent
284 struct drm_tv_connector_state
{
285 enum drm_mode_subconnector subconnector
;
293 unsigned int brightness
;
294 unsigned int contrast
;
295 unsigned int flicker_reduction
;
296 unsigned int overscan
;
297 unsigned int saturation
;
302 * struct drm_connector_state - mutable connector state
303 * @connector: backpointer to the connector
304 * @best_encoder: can be used by helpers and drivers to select the encoder
305 * @state: backpointer to global drm_atomic_state
306 * @tv: TV connector state
308 struct drm_connector_state
{
309 struct drm_connector
*connector
;
312 * @crtc: CRTC to connect connector to, NULL if disabled.
314 * Do not change this directly, use drm_atomic_set_crtc_for_connector()
317 struct drm_crtc
*crtc
;
319 struct drm_encoder
*best_encoder
;
322 * @link_status: Connector link_status to keep track of whether link is
323 * GOOD or BAD to notify userspace if retraining is necessary.
325 enum drm_link_status link_status
;
327 struct drm_atomic_state
*state
;
329 struct drm_tv_connector_state tv
;
332 * @picture_aspect_ratio: Connector property to control the
333 * HDMI infoframe aspect ratio setting.
335 * The %DRM_MODE_PICTURE_ASPECT_\* values much match the
336 * values for &enum hdmi_picture_aspect
338 enum hdmi_picture_aspect picture_aspect_ratio
;
341 * @scaling_mode: Connector property to control the
342 * upscaling, mostly used for built-in panels.
344 unsigned int scaling_mode
;
348 * struct drm_connector_funcs - control connectors on a given device
350 * Each CRTC may have one or more connectors attached to it. The functions
351 * below allow the core DRM code to control connectors, enumerate available modes,
354 struct drm_connector_funcs
{
358 * Legacy entry point to set the per-connector DPMS state. Legacy DPMS
359 * is exposed as a standard property on the connector, but diverted to
360 * this callback in the drm core. Note that atomic drivers don't
361 * implement the 4 level DPMS support on the connector any more, but
362 * instead only have an on/off "ACTIVE" property on the CRTC object.
364 * Drivers implementing atomic modeset should use
365 * drm_atomic_helper_connector_dpms() to implement this hook.
369 * 0 on success or a negative error code on failure.
371 int (*dpms
)(struct drm_connector
*connector
, int mode
);
376 * Reset connector hardware and software state to off. This function isn't
377 * called by the core directly, only through drm_mode_config_reset().
378 * It's not a helper hook only for historical reasons.
380 * Atomic drivers can use drm_atomic_helper_connector_reset() to reset
381 * atomic state using this hook.
383 void (*reset
)(struct drm_connector
*connector
);
388 * Check to see if anything is attached to the connector. The parameter
389 * force is set to false whilst polling, true when checking the
390 * connector due to a user request. force can be used by the driver to
391 * avoid expensive, destructive operations during automated probing.
393 * This callback is optional, if not implemented the connector will be
394 * considered as always being attached.
398 * Note that this hook is only called by the probe helper. It's not in
399 * the helper library vtable purely for historical reasons. The only DRM
400 * core entry point to probe connector state is @fill_modes.
402 * Note that the helper library will already hold
403 * &drm_mode_config.connection_mutex. Drivers which need to grab additional
404 * locks to avoid races with concurrent modeset changes need to use
405 * &drm_connector_helper_funcs.detect_ctx instead.
409 * drm_connector_status indicating the connector's status.
411 enum drm_connector_status (*detect
)(struct drm_connector
*connector
,
417 * This function is called to update internal encoder state when the
418 * connector is forced to a certain state by userspace, either through
419 * the sysfs interfaces or on the kernel cmdline. In that case the
420 * @detect callback isn't called.
424 * Note that this hook is only called by the probe helper. It's not in
425 * the helper library vtable purely for historical reasons. The only DRM
426 * core entry point to probe connector state is @fill_modes.
428 void (*force
)(struct drm_connector
*connector
);
433 * Entry point for output detection and basic mode validation. The
434 * driver should reprobe the output if needed (e.g. when hotplug
435 * handling is unreliable), add all detected modes to &drm_connector.modes
436 * and filter out any the device can't support in any configuration. It
437 * also needs to filter out any modes wider or higher than the
438 * parameters max_width and max_height indicate.
440 * The drivers must also prune any modes no longer valid from
441 * &drm_connector.modes. Furthermore it must update
442 * &drm_connector.status and &drm_connector.edid. If no EDID has been
443 * received for this output connector->edid must be NULL.
445 * Drivers using the probe helpers should use
446 * drm_helper_probe_single_connector_modes() or
447 * drm_helper_probe_single_connector_modes_nomerge() to implement this
452 * The number of modes detected and filled into &drm_connector.modes.
454 int (*fill_modes
)(struct drm_connector
*connector
, uint32_t max_width
, uint32_t max_height
);
459 * This is the legacy entry point to update a property attached to the
462 * Drivers implementing atomic modeset should use
463 * drm_atomic_helper_connector_set_property() to implement this hook.
465 * This callback is optional if the driver does not support any legacy
466 * driver-private properties.
470 * 0 on success or a negative error code on failure.
472 int (*set_property
)(struct drm_connector
*connector
, struct drm_property
*property
,
478 * This optional hook can be used to register additional userspace
479 * interfaces attached to the connector, light backlight control, i2c,
480 * DP aux or similar interfaces. It is called late in the driver load
481 * sequence from drm_connector_register() when registering all the
482 * core drm connector interfaces. Everything added from this callback
483 * should be unregistered in the early_unregister callback.
485 * This is called while holding &drm_connector.mutex.
489 * 0 on success, or a negative error code on failure.
491 int (*late_register
)(struct drm_connector
*connector
);
496 * This optional hook should be used to unregister the additional
497 * userspace interfaces attached to the connector from
498 * late_register(). It is called from drm_connector_unregister(),
499 * early in the driver unload sequence to disable userspace access
500 * before data structures are torndown.
502 * This is called while holding &drm_connector.mutex.
504 void (*early_unregister
)(struct drm_connector
*connector
);
509 * Clean up connector resources. This is called at driver unload time
510 * through drm_mode_config_cleanup(). It can also be called at runtime
511 * when a connector is being hot-unplugged for drivers that support
512 * connector hotplugging (e.g. DisplayPort MST).
514 void (*destroy
)(struct drm_connector
*connector
);
517 * @atomic_duplicate_state:
519 * Duplicate the current atomic state for this connector and return it.
520 * The core and helpers guarantee that any atomic state duplicated with
521 * this hook and still owned by the caller (i.e. not transferred to the
522 * driver by calling &drm_mode_config_funcs.atomic_commit) will be
523 * cleaned up by calling the @atomic_destroy_state hook in this
526 * Atomic drivers which don't subclass &struct drm_connector_state should use
527 * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the
528 * state structure to extend it with driver-private state should use
529 * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is
530 * duplicated in a consistent fashion across drivers.
532 * It is an error to call this hook before &drm_connector.state has been
533 * initialized correctly.
537 * If the duplicate state references refcounted resources this hook must
538 * acquire a reference for each of them. The driver must release these
539 * references again in @atomic_destroy_state.
543 * Duplicated atomic state or NULL when the allocation failed.
545 struct drm_connector_state
*(*atomic_duplicate_state
)(struct drm_connector
*connector
);
548 * @atomic_destroy_state:
550 * Destroy a state duplicated with @atomic_duplicate_state and release
551 * or unreference all resources it references
553 void (*atomic_destroy_state
)(struct drm_connector
*connector
,
554 struct drm_connector_state
*state
);
557 * @atomic_set_property:
559 * Decode a driver-private property value and store the decoded value
560 * into the passed-in state structure. Since the atomic core decodes all
561 * standardized properties (even for extensions beyond the core set of
562 * properties which might not be implemented by all drivers) this
563 * requires drivers to subclass the state structure.
565 * Such driver-private properties should really only be implemented for
566 * truly hardware/vendor specific state. Instead it is preferred to
567 * standardize atomic extension and decode the properties used to expose
568 * such an extension in the core.
570 * Do not call this function directly, use
571 * drm_atomic_connector_set_property() instead.
573 * This callback is optional if the driver does not support any
574 * driver-private atomic properties.
578 * This function is called in the state assembly phase of atomic
579 * modesets, which can be aborted for any reason (including on
580 * userspace's request to just check whether a configuration would be
581 * possible). Drivers MUST NOT touch any persistent state (hardware or
582 * software) or data structures except the passed in @state parameter.
584 * Also since userspace controls in which order properties are set this
585 * function must not do any input validation (since the state update is
586 * incomplete and hence likely inconsistent). Instead any such input
587 * validation must be done in the various atomic_check callbacks.
591 * 0 if the property has been found, -EINVAL if the property isn't
592 * implemented by the driver (which shouldn't ever happen, the core only
593 * asks for properties attached to this connector). No other validation
594 * is allowed by the driver. The core already checks that the property
595 * value is within the range (integer, valid enum value, ...) the driver
596 * set when registering the property.
598 int (*atomic_set_property
)(struct drm_connector
*connector
,
599 struct drm_connector_state
*state
,
600 struct drm_property
*property
,
604 * @atomic_get_property:
606 * Reads out the decoded driver-private property. This is used to
607 * implement the GETCONNECTOR IOCTL.
609 * Do not call this function directly, use
610 * drm_atomic_connector_get_property() instead.
612 * This callback is optional if the driver does not support any
613 * driver-private atomic properties.
617 * 0 on success, -EINVAL if the property isn't implemented by the
618 * driver (which shouldn't ever happen, the core only asks for
619 * properties attached to this connector).
621 int (*atomic_get_property
)(struct drm_connector
*connector
,
622 const struct drm_connector_state
*state
,
623 struct drm_property
*property
,
627 * @atomic_print_state:
629 * If driver subclasses &struct drm_connector_state, it should implement
630 * this optional hook for printing additional driver specific state.
632 * Do not call this directly, use drm_atomic_connector_print_state()
635 void (*atomic_print_state
)(struct drm_printer
*p
,
636 const struct drm_connector_state
*state
);
639 /* mode specified on the command line */
640 struct drm_cmdline_mode
{
642 bool refresh_specified
;
651 enum drm_connector_force force
;
655 * struct drm_connector - central DRM connector control structure
656 * @dev: parent DRM device
657 * @kdev: kernel device for sysfs attributes
658 * @attr: sysfs attributes
659 * @head: list management
660 * @base: base KMS object
661 * @name: human readable name, can be overwritten by the driver
662 * @connector_type: one of the DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
663 * @connector_type_id: index into connector type enum
664 * @interlace_allowed: can this connector handle interlaced modes?
665 * @doublescan_allowed: can this connector handle doublescan?
666 * @stereo_allowed: can this connector handle stereo modes?
667 * @funcs: connector control functions
668 * @edid_blob_ptr: DRM property containing EDID if present
669 * @properties: property tracking for this connector
670 * @dpms: current dpms state
671 * @helper_private: mid-layer private data
672 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
673 * @force: a DRM_FORCE_<foo> state for forced mode sets
674 * @override_edid: has the EDID been overwritten through debugfs for testing?
675 * @encoder_ids: valid encoders for this connector
676 * @encoder: encoder driving this connector, if any
677 * @eld: EDID-like data, if present
678 * @latency_present: AV delay info from ELD, if found
679 * @video_latency: video latency info from ELD, if found
680 * @audio_latency: audio latency info from ELD, if found
681 * @null_edid_counter: track sinks that give us all zeros for the EDID
682 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
683 * @edid_corrupt: indicates whether the last read EDID was corrupt
684 * @debugfs_entry: debugfs directory for this connector
685 * @has_tile: is this connector connected to a tiled monitor
686 * @tile_group: tile group for the connected monitor
687 * @tile_is_single_monitor: whether the tile is one monitor housing
688 * @num_h_tile: number of horizontal tiles in the tile group
689 * @num_v_tile: number of vertical tiles in the tile group
690 * @tile_h_loc: horizontal location of this tile
691 * @tile_v_loc: vertical location of this tile
692 * @tile_h_size: horizontal size of this tile.
693 * @tile_v_size: vertical size of this tile.
694 * @scaling_mode_property: Optional atomic property to control the upscaling.
696 * Each connector may be connected to one or more CRTCs, or may be clonable by
697 * another connector if they can share a CRTC. Each connector also has a specific
698 * position in the broader display (referred to as a 'screen' though it could
699 * span multiple monitors).
701 struct drm_connector
{
702 struct drm_device
*dev
;
704 struct device_attribute
*attr
;
705 struct list_head head
;
707 struct drm_mode_object base
;
712 * @mutex: Lock for general connector state, but currently only protects
713 * @registered. Most of the connector state is still protected by
714 * &drm_mode_config.mutex.
719 * @index: Compacted connector index, which matches the position inside
720 * the mode_config.list for drivers not supporting hot-add/removing. Can
721 * be used as an array index. It is invariant over the lifetime of the
727 int connector_type_id
;
728 bool interlace_allowed
;
729 bool doublescan_allowed
;
732 * @registered: Is this connector exposed (registered) with userspace?
733 * Protected by @mutex.
739 * Modes available on this connector (from fill_modes() + user).
740 * Protected by &drm_mode_config.mutex.
742 struct list_head modes
;
746 * One of the drm_connector_status enums (connected, not, or unknown).
747 * Protected by &drm_mode_config.mutex.
749 enum drm_connector_status status
;
753 * These are modes added by probing with DDC or the BIOS, before
754 * filtering is applied. Used by the probe helpers. Protected by
755 * &drm_mode_config.mutex.
757 struct list_head probed_modes
;
760 * @display_info: Display information is filled from EDID information
761 * when a display is detected. For non hot-pluggable displays such as
762 * flat panels in embedded systems, the driver should initialize the
763 * &drm_display_info.width_mm and &drm_display_info.height_mm fields
764 * with the physical size of the display.
766 * Protected by &drm_mode_config.mutex.
768 struct drm_display_info display_info
;
769 const struct drm_connector_funcs
*funcs
;
771 struct drm_property_blob
*edid_blob_ptr
;
772 struct drm_object_properties properties
;
774 struct drm_property
*scaling_mode_property
;
779 * DRM blob property data for the DP MST path property.
781 struct drm_property_blob
*path_blob_ptr
;
786 * DRM blob property data for the tile property (used mostly by DP MST).
787 * This is meant for screens which are driven through separate display
788 * pipelines represented by &drm_crtc, which might not be running with
789 * genlocked clocks. For tiled panels which are genlocked, like
790 * dual-link LVDS or dual-link DSI, the driver should try to not expose
791 * the tiling and virtualize both &drm_crtc and &drm_plane if needed.
793 struct drm_property_blob
*tile_blob_ptr
;
795 /* should we poll this connector for connects and disconnects */
796 /* hot plug detectable */
797 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
798 /* poll for connections */
799 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
800 /* can cleanly poll for disconnections without flickering the screen */
801 /* DACs should rarely do this without a lot of testing */
802 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
807 * Connector polling mode, a combination of
809 * DRM_CONNECTOR_POLL_HPD
810 * The connector generates hotplug events and doesn't need to be
811 * periodically polled. The CONNECT and DISCONNECT flags must not
812 * be set together with the HPD flag.
814 * DRM_CONNECTOR_POLL_CONNECT
815 * Periodically poll the connector for connection.
817 * DRM_CONNECTOR_POLL_DISCONNECT
818 * Periodically poll the connector for disconnection.
820 * Set to 0 for connectors that don't support connection status
825 /* requested DPMS state */
828 const struct drm_connector_helper_funcs
*helper_private
;
830 /* forced on connector */
831 struct drm_cmdline_mode cmdline_mode
;
832 enum drm_connector_force force
;
835 #define DRM_CONNECTOR_MAX_ENCODER 3
836 uint32_t encoder_ids
[DRM_CONNECTOR_MAX_ENCODER
];
837 struct drm_encoder
*encoder
; /* currently active encoder */
839 #define MAX_ELD_BYTES 128
841 uint8_t eld
[MAX_ELD_BYTES
];
842 bool latency_present
[2];
843 int video_latency
[2]; /* [0]: progressive, [1]: interlaced */
844 int audio_latency
[2];
845 int null_edid_counter
; /* needed to workaround some HW bugs where we get all 0s */
846 unsigned bad_edid_counter
;
848 /* Flag for raw EDID header corruption - used in Displayport
849 * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6
853 struct dentry
*debugfs_entry
;
858 * Current atomic state for this connector.
860 * This is protected by @drm_mode_config.connection_mutex. Note that
861 * nonblocking atomic commits access the current connector state without
862 * taking locks. Either by going through the &struct drm_atomic_state
863 * pointers, see for_each_connector_in_state(),
864 * for_each_oldnew_connector_in_state(),
865 * for_each_old_connector_in_state() and
866 * for_each_new_connector_in_state(). Or through careful ordering of
867 * atomic commit operations as implemented in the atomic helpers, see
868 * &struct drm_crtc_commit.
870 struct drm_connector_state
*state
;
874 struct drm_tile_group
*tile_group
;
875 bool tile_is_single_monitor
;
877 uint8_t num_h_tile
, num_v_tile
;
878 uint8_t tile_h_loc
, tile_v_loc
;
879 uint16_t tile_h_size
, tile_v_size
;
882 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
884 int drm_connector_init(struct drm_device
*dev
,
885 struct drm_connector
*connector
,
886 const struct drm_connector_funcs
*funcs
,
888 int drm_connector_register(struct drm_connector
*connector
);
889 void drm_connector_unregister(struct drm_connector
*connector
);
890 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
891 struct drm_encoder
*encoder
);
893 void drm_connector_cleanup(struct drm_connector
*connector
);
894 static inline unsigned drm_connector_index(struct drm_connector
*connector
)
896 return connector
->index
;
900 * drm_connector_lookup - lookup connector object
902 * @id: connector object id
904 * This function looks up the connector object specified by id
905 * add takes a reference to it.
907 static inline struct drm_connector
*drm_connector_lookup(struct drm_device
*dev
,
910 struct drm_mode_object
*mo
;
911 mo
= drm_mode_object_find(dev
, id
, DRM_MODE_OBJECT_CONNECTOR
);
912 return mo
? obj_to_connector(mo
) : NULL
;
916 * drm_connector_get - acquire a connector reference
917 * @connector: DRM connector
919 * This function increments the connector's refcount.
921 static inline void drm_connector_get(struct drm_connector
*connector
)
923 drm_mode_object_get(&connector
->base
);
927 * drm_connector_put - release a connector reference
928 * @connector: DRM connector
930 * This function decrements the connector's reference count and frees the
931 * object if the reference count drops to zero.
933 static inline void drm_connector_put(struct drm_connector
*connector
)
935 drm_mode_object_put(&connector
->base
);
939 * drm_connector_reference - acquire a connector reference
940 * @connector: DRM connector
942 * This is a compatibility alias for drm_connector_get() and should not be
945 static inline void drm_connector_reference(struct drm_connector
*connector
)
947 drm_connector_get(connector
);
951 * drm_connector_unreference - release a connector reference
952 * @connector: DRM connector
954 * This is a compatibility alias for drm_connector_put() and should not be
957 static inline void drm_connector_unreference(struct drm_connector
*connector
)
959 drm_connector_put(connector
);
962 const char *drm_get_connector_status_name(enum drm_connector_status status
);
963 const char *drm_get_subpixel_order_name(enum subpixel_order order
);
964 const char *drm_get_dpms_name(int val
);
965 const char *drm_get_dvi_i_subconnector_name(int val
);
966 const char *drm_get_dvi_i_select_name(int val
);
967 const char *drm_get_tv_subconnector_name(int val
);
968 const char *drm_get_tv_select_name(int val
);
970 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
);
971 int drm_mode_create_tv_properties(struct drm_device
*dev
,
972 unsigned int num_modes
,
973 const char * const modes
[]);
974 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
);
975 int drm_connector_attach_scaling_mode_property(struct drm_connector
*connector
,
976 u32 scaling_mode_mask
);
977 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
);
978 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
);
980 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
982 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
);
983 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
984 const struct edid
*edid
);
985 void drm_mode_connector_set_link_status_property(struct drm_connector
*connector
,
986 uint64_t link_status
);
989 * struct drm_tile_group - Tile group metadata
990 * @refcount: reference count
992 * @id: tile group id exposed to userspace
993 * @group_data: Sink-private data identifying this group
995 * @group_data corresponds to displayid vend/prod/serial for external screens
998 struct drm_tile_group
{
999 struct kref refcount
;
1000 struct drm_device
*dev
;
1005 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
1007 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
1009 void drm_mode_put_tile_group(struct drm_device
*dev
,
1010 struct drm_tile_group
*tg
);
1013 * drm_for_each_connector - iterate over all connectors
1014 * @connector: the loop cursor
1015 * @dev: the DRM device
1017 * Iterate over all connectors of @dev.
1021 * This iterator is not safe against hotadd/removal of connectors and is
1022 * deprecated. Use drm_for_each_connector_iter() instead.
1024 #define drm_for_each_connector(connector, dev) \
1025 list_for_each_entry(connector, &(dev)->mode_config.connector_list, head)
1028 * struct drm_connector_list_iter - connector_list iterator
1030 * This iterator tracks state needed to be able to walk the connector_list
1031 * within struct drm_mode_config. Only use together with
1032 * drm_connector_list_iter_begin(), drm_connector_list_iter_end() and
1033 * drm_connector_list_iter_next() respectively the convenience macro
1034 * drm_for_each_connector_iter().
1036 struct drm_connector_list_iter
{
1038 struct drm_device
*dev
;
1039 struct drm_connector
*conn
;
1042 void drm_connector_list_iter_begin(struct drm_device
*dev
,
1043 struct drm_connector_list_iter
*iter
);
1044 struct drm_connector
*
1045 drm_connector_list_iter_next(struct drm_connector_list_iter
*iter
);
1046 void drm_connector_list_iter_end(struct drm_connector_list_iter
*iter
);
1049 * drm_for_each_connector_iter - connector_list iterator macro
1050 * @connector: &struct drm_connector pointer used as cursor
1051 * @iter: &struct drm_connector_list_iter
1053 * Note that @connector is only valid within the list body, if you want to use
1054 * @connector after calling drm_connector_list_iter_end() then you need to grab
1055 * your own reference first using drm_connector_begin().
1057 #define drm_for_each_connector_iter(connector, iter) \
1058 while ((connector = drm_connector_list_iter_next(iter)))