include/drm/drm_crtc.h

   1 /*
   2  * Copyright © 2006 Keith Packard
   3  * Copyright © 2007-2008 Dave Airlie
   4  * Copyright © 2007-2008 Intel Corporation
   5  *   Jesse Barnes <jesse.barnes@intel.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25 #ifndef __DRM_CRTC_H__
  26 #define __DRM_CRTC_H__
  27
  28 #include <linux/i2c.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/types.h>
  31 #include <linux/idr.h>
  32 #include <linux/fb.h>
  33 #include <linux/hdmi.h>
  34 #include <drm/drm_mode.h>
  35 #include <drm/drm_fourcc.h>
  36 #include <drm/drm_modeset_lock.h>
  37
  38 struct drm_device;
  39 struct drm_mode_set;
  40 struct drm_framebuffer;
  41 struct drm_object_properties;
  42 struct drm_file;
  43 struct drm_clip_rect;
  44
  45 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  46 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  47 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  48 #define DRM_MODE_OBJECT_MODE 0xdededede
  49 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  50 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  51 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  52 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  53 #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd
  54 #define DRM_MODE_OBJECT_ANY 0
  55
  56 struct drm_mode_object {
  57         uint32_t id;
  58         uint32_t type;
  59         struct drm_object_properties *properties;
  60 };
  61
  62 #define DRM_OBJECT_MAX_PROPERTY 24
  63 struct drm_object_properties {
  64         int count;
  65         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  66         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  67 };
  68
  69 static inline int64_t U642I64(uint64_t val)
  70 {
  71         return (int64_t)*((int64_t *)&val);
  72 }
  73 static inline uint64_t I642U64(int64_t val)
  74 {
  75         return (uint64_t)*((uint64_t *)&val);
  76 }
  77
  78 enum drm_connector_force {
  79         DRM_FORCE_UNSPECIFIED,
  80         DRM_FORCE_OFF,
  81         DRM_FORCE_ON,         /* force on analog part normally */
  82         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
  83 };
  84
  85 #include <drm/drm_modes.h>
  86
  87 enum drm_connector_status {
  88         connector_status_connected = 1,
  89         connector_status_disconnected = 2,
  90         connector_status_unknown = 3,
  91 };
  92
  93 enum subpixel_order {
  94         SubPixelUnknown = 0,
  95         SubPixelHorizontalRGB,
  96         SubPixelHorizontalBGR,
  97         SubPixelVerticalRGB,
  98         SubPixelVerticalBGR,
  99         SubPixelNone,
 100 };
 101
 102 #define DRM_COLOR_FORMAT_RGB444         (1<<0)
 103 #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
 104 #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
 105 /*
 106  * Describes a given display (e.g. CRT or flat panel) and its limitations.
 107  */
 108 struct drm_display_info {
 109         char name[DRM_DISPLAY_INFO_LEN];
 110
 111         /* Physical size */
 112         unsigned int width_mm;
 113         unsigned int height_mm;
 114
 115         /* Clock limits FIXME: storage format */
 116         unsigned int min_vfreq, max_vfreq;
 117         unsigned int min_hfreq, max_hfreq;
 118         unsigned int pixel_clock;
 119         unsigned int bpc;
 120
 121         enum subpixel_order subpixel_order;
 122         u32 color_formats;
 123
 124         /* Mask of supported hdmi deep color modes */
 125         u8 edid_hdmi_dc_modes;
 126
 127         u8 cea_rev;
 128 };
 129
 130 struct drm_framebuffer_funcs {
 131         /* note: use drm_framebuffer_remove() */
 132         void (*destroy)(struct drm_framebuffer *framebuffer);
 133         int (*create_handle)(struct drm_framebuffer *fb,
 134                              struct drm_file *file_priv,
 135                              unsigned int *handle);
 136         /**
 137          * Optinal callback for the dirty fb ioctl.
 138          *
 139          * Userspace can notify the driver via this callback
 140          * that a area of the framebuffer has changed and should
 141          * be flushed to the display hardware.
 142          *
 143          * See documentation in drm_mode.h for the struct
 144          * drm_mode_fb_dirty_cmd for more information as all
 145          * the semantics and arguments have a one to one mapping
 146          * on this function.
 147          */
 148         int (*dirty)(struct drm_framebuffer *framebuffer,
 149                      struct drm_file *file_priv, unsigned flags,
 150                      unsigned color, struct drm_clip_rect *clips,
 151                      unsigned num_clips);
 152 };
 153
 154 struct drm_framebuffer {
 155         struct drm_device *dev;
 156         /*
 157          * Note that the fb is refcounted for the benefit of driver internals,
 158          * for example some hw, disabling a CRTC/plane is asynchronous, and
 159          * scanout does not actually complete until the next vblank.  So some
 160          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
 161          * should be deferred.  In cases like this, the driver would like to
 162          * hold a ref to the fb even though it has already been removed from
 163          * userspace perspective.
 164          */
 165         struct kref refcount;
 166         /*
 167          * Place on the dev->mode_config.fb_list, access protected by
 168          * dev->mode_config.fb_lock.
 169          */
 170         struct list_head head;
 171         struct drm_mode_object base;
 172         const struct drm_framebuffer_funcs *funcs;
 173         unsigned int pitches[4];
 174         unsigned int offsets[4];
 175         unsigned int width;
 176         unsigned int height;
 177         /* depth can be 15 or 16 */
 178         unsigned int depth;
 179         int bits_per_pixel;
 180         int flags;
 181         uint32_t pixel_format; /* fourcc format */
 182         struct list_head filp_head;
 183         /* if you are using the helper */
 184         void *helper_private;
 185 };
 186
 187 struct drm_property_blob {
 188         struct drm_mode_object base;
 189         struct list_head head;
 190         unsigned int length;
 191         unsigned char data[];
 192 };
 193
 194 struct drm_property_enum {
 195         uint64_t value;
 196         struct list_head head;
 197         char name[DRM_PROP_NAME_LEN];
 198 };
 199
 200 struct drm_property {
 201         struct list_head head;
 202         struct drm_mode_object base;
 203         uint32_t flags;
 204         char name[DRM_PROP_NAME_LEN];
 205         uint32_t num_values;
 206         uint64_t *values;
 207         struct drm_device *dev;
 208
 209         struct list_head enum_blob_list;
 210 };
 211
 212 void drm_modeset_lock_all(struct drm_device *dev);
 213 void drm_modeset_unlock_all(struct drm_device *dev);
 214 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
 215
 216 struct drm_crtc;
 217 struct drm_connector;
 218 struct drm_encoder;
 219 struct drm_pending_vblank_event;
 220 struct drm_plane;
 221 struct drm_bridge;
 222
 223 /**
 224  * drm_crtc_funcs - control CRTCs for a given device
 225  * @save: save CRTC state
 226  * @restore: restore CRTC state
 227  * @reset: reset CRTC after state has been invalidated (e.g. resume)
 228  * @cursor_set: setup the cursor
 229  * @cursor_move: move the cursor
 230  * @gamma_set: specify color ramp for CRTC
 231  * @destroy: deinit and free object
 232  * @set_property: called when a property is changed
 233  * @set_config: apply a new CRTC configuration
 234  * @page_flip: initiate a page flip
 235  *
 236  * The drm_crtc_funcs structure is the central CRTC management structure
 237  * in the DRM.  Each CRTC controls one or more connectors (note that the name
 238  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
 239  * connectors, not just CRTs).
 240  *
 241  * Each driver is responsible for filling out this structure at startup time,
 242  * in addition to providing other modesetting features, like i2c and DDC
 243  * bus accessors.
 244  */
 245 struct drm_crtc_funcs {
 246         /* Save CRTC state */
 247         void (*save)(struct drm_crtc *crtc); /* suspend? */
 248         /* Restore CRTC state */
 249         void (*restore)(struct drm_crtc *crtc); /* resume? */
 250         /* Reset CRTC state */
 251         void (*reset)(struct drm_crtc *crtc);
 252
 253         /* cursor controls */
 254         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
 255                           uint32_t handle, uint32_t width, uint32_t height);
 256         int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
 257                            uint32_t handle, uint32_t width, uint32_t height,
 258                            int32_t hot_x, int32_t hot_y);
 259         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
 260
 261         /* Set gamma on the CRTC */
 262         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 263                           uint32_t start, uint32_t size);
 264         /* Object destroy routine */
 265         void (*destroy)(struct drm_crtc *crtc);
 266
 267         int (*set_config)(struct drm_mode_set *set);
 268
 269         /*
 270          * Flip to the given framebuffer.  This implements the page
 271          * flip ioctl described in drm_mode.h, specifically, the
 272          * implementation must return immediately and block all
 273          * rendering to the current fb until the flip has completed.
 274          * If userspace set the event flag in the ioctl, the event
 275          * argument will point to an event to send back when the flip
 276          * completes, otherwise it will be NULL.
 277          */
 278         int (*page_flip)(struct drm_crtc *crtc,
 279                          struct drm_framebuffer *fb,
 280                          struct drm_pending_vblank_event *event,
 281                          uint32_t flags);
 282
 283         int (*set_property)(struct drm_crtc *crtc,
 284                             struct drm_property *property, uint64_t val);
 285 };
 286
 287 /**
 288  * drm_crtc - central CRTC control structure
 289  * @dev: parent DRM device
 290  * @head: list management
 291  * @mutex: per-CRTC locking
 292  * @base: base KMS object for ID tracking etc.
 293  * @primary: primary plane for this CRTC
 294  * @cursor: cursor plane for this CRTC
 295  * @enabled: is this CRTC enabled?
 296  * @mode: current mode timings
 297  * @hwmode: mode timings as programmed to hw regs
 298  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
 299  *    invert the width/height of the crtc.  This is used if the driver
 300  *    is performing 90 or 270 degree rotated scanout
 301  * @x: x position on screen
 302  * @y: y position on screen
 303  * @funcs: CRTC control functions
 304  * @gamma_size: size of gamma ramp
 305  * @gamma_store: gamma ramp values
 306  * @framedur_ns: precise frame timing
 307  * @framedur_ns: precise line timing
 308  * @pixeldur_ns: precise pixel timing
 309  * @helper_private: mid-layer private data
 310  * @properties: property tracking for this CRTC
 311  *
 312  * Each CRTC may have one or more connectors associated with it.  This structure
 313  * allows the CRTC to be controlled.
 314  */
 315 struct drm_crtc {
 316         struct drm_device *dev;
 317         struct list_head head;
 318
 319         /**
 320          * crtc mutex
 321          *
 322          * This provides a read lock for the overall crtc state (mode, dpms
 323          * state, ...) and a write lock for everything which can be update
 324          * without a full modeset (fb, cursor data, ...)
 325          */
 326         struct drm_modeset_lock mutex;
 327
 328         struct drm_mode_object base;
 329
 330         /* primary and cursor planes for CRTC */
 331         struct drm_plane *primary;
 332         struct drm_plane *cursor;
 333
 334         /* Temporary tracking of the old fb while a modeset is ongoing. Used
 335          * by drm_mode_set_config_internal to implement correct refcounting. */
 336         struct drm_framebuffer *old_fb;
 337
 338         bool enabled;
 339
 340         /* Requested mode from modesetting. */
 341         struct drm_display_mode mode;
 342
 343         /* Programmed mode in hw, after adjustments for encoders,
 344          * crtc, panel scaling etc. Needed for timestamping etc.
 345          */
 346         struct drm_display_mode hwmode;
 347
 348         bool invert_dimensions;
 349
 350         int x, y;
 351         const struct drm_crtc_funcs *funcs;
 352
 353         /* CRTC gamma size for reporting to userspace */
 354         uint32_t gamma_size;
 355         uint16_t *gamma_store;
 356
 357         /* Constants needed for precise vblank and swap timestamping. */
 358         int framedur_ns, linedur_ns, pixeldur_ns;
 359
 360         /* if you are using the helper */
 361         void *helper_private;
 362
 363         struct drm_object_properties properties;
 364 };
 365
 366
 367 /**
 368  * drm_connector_funcs - control connectors on a given device
 369  * @dpms: set power state (see drm_crtc_funcs above)
 370  * @save: save connector state
 371  * @restore: restore connector state
 372  * @reset: reset connector after state has been invalidated (e.g. resume)
 373  * @detect: is this connector active?
 374  * @fill_modes: fill mode list for this connector
 375  * @set_property: property for this connector may need an update
 376  * @destroy: make object go away
 377  * @force: notify the driver that the connector is forced on
 378  *
 379  * Each CRTC may have one or more connectors attached to it.  The functions
 380  * below allow the core DRM code to control connectors, enumerate available modes,
 381  * etc.
 382  */
 383 struct drm_connector_funcs {
 384         void (*dpms)(struct drm_connector *connector, int mode);
 385         void (*save)(struct drm_connector *connector);
 386         void (*restore)(struct drm_connector *connector);
 387         void (*reset)(struct drm_connector *connector);
 388
 389         /* Check to see if anything is attached to the connector.
 390          * @force is set to false whilst polling, true when checking the
 391          * connector due to user request. @force can be used by the driver
 392          * to avoid expensive, destructive operations during automated
 393          * probing.
 394          */
 395         enum drm_connector_status (*detect)(struct drm_connector *connector,
 396                                             bool force);
 397         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
 398         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
 399                              uint64_t val);
 400         void (*destroy)(struct drm_connector *connector);
 401         void (*force)(struct drm_connector *connector);
 402 };
 403
 404 /**
 405  * drm_encoder_funcs - encoder controls
 406  * @reset: reset state (e.g. at init or resume time)
 407  * @destroy: cleanup and free associated data
 408  *
 409  * Encoders sit between CRTCs and connectors.
 410  */
 411 struct drm_encoder_funcs {
 412         void (*reset)(struct drm_encoder *encoder);
 413         void (*destroy)(struct drm_encoder *encoder);
 414 };
 415
 416 #define DRM_CONNECTOR_MAX_ENCODER 3
 417
 418 /**
 419  * drm_encoder - central DRM encoder structure
 420  * @dev: parent DRM device
 421  * @head: list management
 422  * @base: base KMS object
 423  * @name: encoder name
 424  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
 425  * @possible_crtcs: bitmask of potential CRTC bindings
 426  * @possible_clones: bitmask of potential sibling encoders for cloning
 427  * @crtc: currently bound CRTC
 428  * @bridge: bridge associated to the encoder
 429  * @funcs: control functions
 430  * @helper_private: mid-layer private data
 431  *
 432  * CRTCs drive pixels to encoders, which convert them into signals
 433  * appropriate for a given connector or set of connectors.
 434  */
 435 struct drm_encoder {
 436         struct drm_device *dev;
 437         struct list_head head;
 438
 439         struct drm_mode_object base;
 440         char *name;
 441         int encoder_type;
 442         uint32_t possible_crtcs;
 443         uint32_t possible_clones;
 444
 445         struct drm_crtc *crtc;
 446         struct drm_bridge *bridge;
 447         const struct drm_encoder_funcs *funcs;
 448         void *helper_private;
 449 };
 450
 451 /* should we poll this connector for connects and disconnects */
 452 /* hot plug detectable */
 453 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
 454 /* poll for connections */
 455 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
 456 /* can cleanly poll for disconnections without flickering the screen */
 457 /* DACs should rarely do this without a lot of testing */
 458 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
 459
 460 #define MAX_ELD_BYTES   128
 461
 462 /**
 463  * drm_connector - central DRM connector control structure
 464  * @dev: parent DRM device
 465  * @kdev: kernel device for sysfs attributes
 466  * @attr: sysfs attributes
 467  * @head: list management
 468  * @base: base KMS object
 469  * @name: connector name
 470  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
 471  * @connector_type_id: index into connector type enum
 472  * @interlace_allowed: can this connector handle interlaced modes?
 473  * @doublescan_allowed: can this connector handle doublescan?
 474  * @modes: modes available on this connector (from fill_modes() + user)
 475  * @status: one of the drm_connector_status enums (connected, not, or unknown)
 476  * @probed_modes: list of modes derived directly from the display
 477  * @display_info: information about attached display (e.g. from EDID)
 478  * @funcs: connector control functions
 479  * @edid_blob_ptr: DRM property containing EDID if present
 480  * @properties: property tracking for this connector
 481  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
 482  * @dpms: current dpms state
 483  * @helper_private: mid-layer private data
 484  * @force: a %DRM_FORCE_<foo> state for forced mode sets
 485  * @encoder_ids: valid encoders for this connector
 486  * @encoder: encoder driving this connector, if any
 487  * @eld: EDID-like data, if present
 488  * @dvi_dual: dual link DVI, if found
 489  * @max_tmds_clock: max clock rate, if found
 490  * @latency_present: AV delay info from ELD, if found
 491  * @video_latency: video latency info from ELD, if found
 492  * @audio_latency: audio latency info from ELD, if found
 493  * @null_edid_counter: track sinks that give us all zeros for the EDID
 494  *
 495  * Each connector may be connected to one or more CRTCs, or may be clonable by
 496  * another connector if they can share a CRTC.  Each connector also has a specific
 497  * position in the broader display (referred to as a 'screen' though it could
 498  * span multiple monitors).
 499  */
 500 struct drm_connector {
 501         struct drm_device *dev;
 502         struct device *kdev;
 503         struct device_attribute *attr;
 504         struct list_head head;
 505
 506         struct drm_mode_object base;
 507
 508         char *name;
 509         int connector_type;
 510         int connector_type_id;
 511         bool interlace_allowed;
 512         bool doublescan_allowed;
 513         bool stereo_allowed;
 514         struct list_head modes; /* list of modes on this connector */
 515
 516         enum drm_connector_status status;
 517
 518         /* these are modes added by probing with DDC or the BIOS */
 519         struct list_head probed_modes;
 520
 521         struct drm_display_info display_info;
 522         const struct drm_connector_funcs *funcs;
 523
 524         struct drm_property_blob *edid_blob_ptr;
 525         struct drm_object_properties properties;
 526
 527         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
 528
 529         /* requested DPMS state */
 530         int dpms;
 531
 532         void *helper_private;
 533
 534         /* forced on connector */
 535         enum drm_connector_force force;
 536         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
 537         struct drm_encoder *encoder; /* currently active encoder */
 538
 539         /* EDID bits */
 540         uint8_t eld[MAX_ELD_BYTES];
 541         bool dvi_dual;
 542         int max_tmds_clock;     /* in MHz */
 543         bool latency_present[2];
 544         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
 545         int audio_latency[2];
 546         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
 547         unsigned bad_edid_counter;
 548 };
 549
 550 /**
 551  * drm_plane_funcs - driver plane control functions
 552  * @update_plane: update the plane configuration
 553  * @disable_plane: shut down the plane
 554  * @destroy: clean up plane resources
 555  * @set_property: called when a property is changed
 556  */
 557 struct drm_plane_funcs {
 558         int (*update_plane)(struct drm_plane *plane,
 559                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
 560                             int crtc_x, int crtc_y,
 561                             unsigned int crtc_w, unsigned int crtc_h,
 562                             uint32_t src_x, uint32_t src_y,
 563                             uint32_t src_w, uint32_t src_h);
 564         int (*disable_plane)(struct drm_plane *plane);
 565         void (*destroy)(struct drm_plane *plane);
 566
 567         int (*set_property)(struct drm_plane *plane,
 568                             struct drm_property *property, uint64_t val);
 569 };
 570
 571 enum drm_plane_type {
 572         DRM_PLANE_TYPE_OVERLAY,
 573         DRM_PLANE_TYPE_PRIMARY,
 574         DRM_PLANE_TYPE_CURSOR,
 575 };
 576
 577 /**
 578  * drm_plane - central DRM plane control structure
 579  * @dev: DRM device this plane belongs to
 580  * @head: for list management
 581  * @base: base mode object
 582  * @possible_crtcs: pipes this plane can be bound to
 583  * @format_types: array of formats supported by this plane
 584  * @format_count: number of formats supported
 585  * @crtc: currently bound CRTC
 586  * @fb: currently bound fb
 587  * @funcs: helper functions
 588  * @properties: property tracking for this plane
 589  * @type: type of plane (overlay, primary, cursor)
 590  */
 591 struct drm_plane {
 592         struct drm_device *dev;
 593         struct list_head head;
 594
 595         struct drm_mode_object base;
 596
 597         uint32_t possible_crtcs;
 598         uint32_t *format_types;
 599         uint32_t format_count;
 600
 601         struct drm_crtc *crtc;
 602         struct drm_framebuffer *fb;
 603
 604         const struct drm_plane_funcs *funcs;
 605
 606         struct drm_object_properties properties;
 607
 608         enum drm_plane_type type;
 609 };
 610
 611 /**
 612  * drm_bridge_funcs - drm_bridge control functions
 613  * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
 614  * @disable: Called right before encoder prepare, disables the bridge
 615  * @post_disable: Called right after encoder prepare, for lockstepped disable
 616  * @mode_set: Set this mode to the bridge
 617  * @pre_enable: Called right before encoder commit, for lockstepped commit
 618  * @enable: Called right after encoder commit, enables the bridge
 619  * @destroy: make object go away
 620  */
 621 struct drm_bridge_funcs {
 622         bool (*mode_fixup)(struct drm_bridge *bridge,
 623                            const struct drm_display_mode *mode,
 624                            struct drm_display_mode *adjusted_mode);
 625         void (*disable)(struct drm_bridge *bridge);
 626         void (*post_disable)(struct drm_bridge *bridge);
 627         void (*mode_set)(struct drm_bridge *bridge,
 628                          struct drm_display_mode *mode,
 629                          struct drm_display_mode *adjusted_mode);
 630         void (*pre_enable)(struct drm_bridge *bridge);
 631         void (*enable)(struct drm_bridge *bridge);
 632         void (*destroy)(struct drm_bridge *bridge);
 633 };
 634
 635 /**
 636  * drm_bridge - central DRM bridge control structure
 637  * @dev: DRM device this bridge belongs to
 638  * @head: list management
 639  * @base: base mode object
 640  * @funcs: control functions
 641  * @driver_private: pointer to the bridge driver's internal context
 642  */
 643 struct drm_bridge {
 644         struct drm_device *dev;
 645         struct list_head head;
 646
 647         struct drm_mode_object base;
 648
 649         const struct drm_bridge_funcs *funcs;
 650         void *driver_private;
 651 };
 652
 653 /**
 654  * drm_mode_set - new values for a CRTC config change
 655  * @head: list management
 656  * @fb: framebuffer to use for new config
 657  * @crtc: CRTC whose configuration we're about to change
 658  * @mode: mode timings to use
 659  * @x: position of this CRTC relative to @fb
 660  * @y: position of this CRTC relative to @fb
 661  * @connectors: array of connectors to drive with this CRTC if possible
 662  * @num_connectors: size of @connectors array
 663  *
 664  * Represents a single crtc the connectors that it drives with what mode
 665  * and from which framebuffer it scans out from.
 666  *
 667  * This is used to set modes.
 668  */
 669 struct drm_mode_set {
 670         struct drm_framebuffer *fb;
 671         struct drm_crtc *crtc;
 672         struct drm_display_mode *mode;
 673
 674         uint32_t x;
 675         uint32_t y;
 676
 677         struct drm_connector **connectors;
 678         size_t num_connectors;
 679 };
 680
 681 /**
 682  * struct drm_mode_config_funcs - basic driver provided mode setting functions
 683  * @fb_create: create a new framebuffer object
 684  * @output_poll_changed: function to handle output configuration changes
 685  *
 686  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
 687  * involve drivers.
 688  */
 689 struct drm_mode_config_funcs {
 690         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
 691                                              struct drm_file *file_priv,
 692                                              struct drm_mode_fb_cmd2 *mode_cmd);
 693         void (*output_poll_changed)(struct drm_device *dev);
 694 };
 695
 696 /**
 697  * drm_mode_group - group of mode setting resources for potential sub-grouping
 698  * @num_crtcs: CRTC count
 699  * @num_encoders: encoder count
 700  * @num_connectors: connector count
 701  * @id_list: list of KMS object IDs in this group
 702  *
 703  * Currently this simply tracks the global mode setting state.  But in the
 704  * future it could allow groups of objects to be set aside into independent
 705  * control groups for use by different user level processes (e.g. two X servers
 706  * running simultaneously on different heads, each with their own mode
 707  * configuration and freedom of mode setting).
 708  */
 709 struct drm_mode_group {
 710         uint32_t num_crtcs;
 711         uint32_t num_encoders;
 712         uint32_t num_connectors;
 713         uint32_t num_bridges;
 714
 715         /* list of object IDs for this group */
 716         uint32_t *id_list;
 717 };
 718
 719 /**
 720  * drm_mode_config - Mode configuration control structure
 721  * @mutex: mutex protecting KMS related lists and structures
 722  * @idr_mutex: mutex for KMS ID allocation and management
 723  * @crtc_idr: main KMS ID tracking object
 724  * @num_fb: number of fbs available
 725  * @fb_list: list of framebuffers available
 726  * @num_connector: number of connectors on this device
 727  * @connector_list: list of connector objects
 728  * @num_bridge: number of bridges on this device
 729  * @bridge_list: list of bridge objects
 730  * @num_encoder: number of encoders on this device
 731  * @encoder_list: list of encoder objects
 732  * @num_crtc: number of CRTCs on this device
 733  * @crtc_list: list of CRTC objects
 734  * @min_width: minimum pixel width on this device
 735  * @min_height: minimum pixel height on this device
 736  * @max_width: maximum pixel width on this device
 737  * @max_height: maximum pixel height on this device
 738  * @funcs: core driver provided mode setting functions
 739  * @fb_base: base address of the framebuffer
 740  * @poll_enabled: track polling status for this device
 741  * @output_poll_work: delayed work for polling in process context
 742  * @*_property: core property tracking
 743  *
 744  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
 745  * enumerated by the driver are added here, as are global properties.  Some
 746  * global restrictions are also here, e.g. dimension restrictions.
 747  */
 748 struct drm_mode_config {
 749         struct mutex mutex; /* protects configuration (mode lists etc.) */
 750         struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
 751         struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
 752         struct mutex idr_mutex; /* for IDR management */
 753         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
 754         /* this is limited to one for now */
 755
 756
 757         /**
 758          * fb_lock - mutex to protect fb state
 759          *
 760          * Besides the global fb list his also protects the fbs list in the
 761          * file_priv
 762          */
 763         struct mutex fb_lock;
 764         int num_fb;
 765         struct list_head fb_list;
 766
 767         int num_connector;
 768         struct list_head connector_list;
 769         int num_bridge;
 770         struct list_head bridge_list;
 771         int num_encoder;
 772         struct list_head encoder_list;
 773
 774         /*
 775          * Track # of overlay planes separately from # of total planes.  By
 776          * default we only advertise overlay planes to userspace; if userspace
 777          * sets the "universal plane" capability bit, we'll go ahead and
 778          * expose all planes.
 779          */
 780         int num_overlay_plane;
 781         int num_total_plane;
 782         struct list_head plane_list;
 783
 784         int num_crtc;
 785         struct list_head crtc_list;
 786
 787         struct list_head property_list;
 788
 789         int min_width, min_height;
 790         int max_width, max_height;
 791         const struct drm_mode_config_funcs *funcs;
 792         resource_size_t fb_base;
 793
 794         /* output poll support */
 795         bool poll_enabled;
 796         bool poll_running;
 797         struct delayed_work output_poll_work;
 798
 799         /* pointers to standard properties */
 800         struct list_head property_blob_list;
 801         struct drm_property *edid_property;
 802         struct drm_property *dpms_property;
 803         struct drm_property *plane_type_property;
 804
 805         /* DVI-I properties */
 806         struct drm_property *dvi_i_subconnector_property;
 807         struct drm_property *dvi_i_select_subconnector_property;
 808
 809         /* TV properties */
 810         struct drm_property *tv_subconnector_property;
 811         struct drm_property *tv_select_subconnector_property;
 812         struct drm_property *tv_mode_property;
 813         struct drm_property *tv_left_margin_property;
 814         struct drm_property *tv_right_margin_property;
 815         struct drm_property *tv_top_margin_property;
 816         struct drm_property *tv_bottom_margin_property;
 817         struct drm_property *tv_brightness_property;
 818         struct drm_property *tv_contrast_property;
 819         struct drm_property *tv_flicker_reduction_property;
 820         struct drm_property *tv_overscan_property;
 821         struct drm_property *tv_saturation_property;
 822         struct drm_property *tv_hue_property;
 823
 824         /* Optional properties */
 825         struct drm_property *scaling_mode_property;
 826         struct drm_property *dirty_info_property;
 827
 828         /* dumb ioctl parameters */
 829         uint32_t preferred_depth, prefer_shadow;
 830
 831         /* whether async page flip is supported or not */
 832         bool async_page_flip;
 833
 834         /* cursor size */
 835         uint32_t cursor_width, cursor_height;
 836 };
 837
 838 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
 839 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
 840 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
 841 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
 842 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
 843 #define obj_to_property(x) container_of(x, struct drm_property, base)
 844 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
 845 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
 846
 847 struct drm_prop_enum_list {
 848         int type;
 849         char *name;
 850 };
 851
 852 extern int drm_crtc_init_with_planes(struct drm_device *dev,
 853                                      struct drm_crtc *crtc,
 854                                      struct drm_plane *primary,
 855                                      void *cursor,
 856                                      const struct drm_crtc_funcs *funcs);
 857 extern int drm_crtc_init(struct drm_device *dev,
 858                          struct drm_crtc *crtc,
 859                          const struct drm_crtc_funcs *funcs);
 860 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
 861 extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
 862
 863 /**
 864  * drm_crtc_mask - find the mask of a registered CRTC
 865  * @crtc: CRTC to find mask for
 866  *
 867  * Given a registered CRTC, return the mask bit of that CRTC for an
 868  * encoder's possible_crtcs field.
 869  */
 870 static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
 871 {
 872         return 1 << drm_crtc_index(crtc);
 873 }
 874
 875 extern void drm_connector_ida_init(void);
 876 extern void drm_connector_ida_destroy(void);
 877 extern int drm_connector_init(struct drm_device *dev,
 878                               struct drm_connector *connector,
 879                               const struct drm_connector_funcs *funcs,
 880                               int connector_type);
 881 int drm_connector_register(struct drm_connector *connector);
 882 void drm_connector_unregister(struct drm_connector *connector);
 883
 884 extern void drm_connector_cleanup(struct drm_connector *connector);
 885 /* helper to unplug all connectors from sysfs for device */
 886 extern void drm_connector_unplug_all(struct drm_device *dev);
 887
 888 extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
 889                            const struct drm_bridge_funcs *funcs);
 890 extern void drm_bridge_cleanup(struct drm_bridge *bridge);
 891
 892 extern int drm_encoder_init(struct drm_device *dev,
 893                             struct drm_encoder *encoder,
 894                             const struct drm_encoder_funcs *funcs,
 895                             int encoder_type);
 896
 897 /**
 898  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
 899  * @encoder: encoder to test
 900  * @crtc: crtc to test
 901  *
 902  * Return false if @encoder can't be driven by @crtc, true otherwise.
 903  */
 904 static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
 905                                        struct drm_crtc *crtc)
 906 {
 907         return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
 908 }
 909
 910 extern int drm_universal_plane_init(struct drm_device *dev,
 911                                     struct drm_plane *plane,
 912                                     unsigned long possible_crtcs,
 913                                     const struct drm_plane_funcs *funcs,
 914                                     const uint32_t *formats,
 915                                     uint32_t format_count,
 916                                     enum drm_plane_type type);
 917 extern int drm_plane_init(struct drm_device *dev,
 918                           struct drm_plane *plane,
 919                           unsigned long possible_crtcs,
 920                           const struct drm_plane_funcs *funcs,
 921                           const uint32_t *formats, uint32_t format_count,
 922                           bool is_primary);
 923 extern void drm_plane_cleanup(struct drm_plane *plane);
 924 extern void drm_plane_force_disable(struct drm_plane *plane);
 925 extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
 926                                    int x, int y,
 927                                    const struct drm_display_mode *mode,
 928                                    const struct drm_framebuffer *fb);
 929
 930 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
 931
 932 extern const char *drm_get_connector_status_name(enum drm_connector_status status);
 933 extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
 934 extern const char *drm_get_dpms_name(int val);
 935 extern const char *drm_get_dvi_i_subconnector_name(int val);
 936 extern const char *drm_get_dvi_i_select_name(int val);
 937 extern const char *drm_get_tv_subconnector_name(int val);
 938 extern const char *drm_get_tv_select_name(int val);
 939 extern void drm_fb_release(struct drm_file *file_priv);
 940 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
 941 extern void drm_mode_group_destroy(struct drm_mode_group *group);
 942 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
 943 extern struct edid *drm_get_edid(struct drm_connector *connector,
 944                                  struct i2c_adapter *adapter);
 945 extern struct edid *drm_edid_duplicate(const struct edid *edid);
 946 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
 947 extern void drm_mode_config_init(struct drm_device *dev);
 948 extern void drm_mode_config_reset(struct drm_device *dev);
 949 extern void drm_mode_config_cleanup(struct drm_device *dev);
 950
 951 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
 952                                                 struct edid *edid);
 953
 954 static inline bool drm_property_type_is(struct drm_property *property,
 955                 uint32_t type)
 956 {
 957         /* instanceof for props.. handles extended type vs original types: */
 958         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
 959                 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
 960         return property->flags & type;
 961 }
 962
 963 static inline bool drm_property_type_valid(struct drm_property *property)
 964 {
 965         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
 966                 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
 967         return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
 968 }
 969
 970 extern int drm_object_property_set_value(struct drm_mode_object *obj,
 971                                          struct drm_property *property,
 972                                          uint64_t val);
 973 extern int drm_object_property_get_value(struct drm_mode_object *obj,
 974                                          struct drm_property *property,
 975                                          uint64_t *value);
 976 extern int drm_framebuffer_init(struct drm_device *dev,
 977                                 struct drm_framebuffer *fb,
 978                                 const struct drm_framebuffer_funcs *funcs);
 979 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
 980                                                       uint32_t id);
 981 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
 982 extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
 983 extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
 984 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
 985 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
 986
 987 extern void drm_object_attach_property(struct drm_mode_object *obj,
 988                                        struct drm_property *property,
 989                                        uint64_t init_val);
 990 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
 991                                                 const char *name, int num_values);
 992 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
 993                                          const char *name,
 994                                          const struct drm_prop_enum_list *props,
 995                                          int num_values);
 996 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 997                                          int flags, const char *name,
 998                                          const struct drm_prop_enum_list *props,
 999                                          int num_values);
1000 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
1001                                          const char *name,
1002                                          uint64_t min, uint64_t max);
1003 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
1004                                          int flags, const char *name,
1005                                          int64_t min, int64_t max);
1006 struct drm_property *drm_property_create_object(struct drm_device *dev,
1007                                          int flags, const char *name, uint32_t type);
1008 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
1009 extern int drm_property_add_enum(struct drm_property *property, int index,
1010                                  uint64_t value, const char *name);
1011 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
1012 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
1013                                      char *formats[]);
1014 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
1015 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
1016
1017 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
1018                                              struct drm_encoder *encoder);
1019 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
1020                                          int gamma_size);
1021 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
1022                 uint32_t id, uint32_t type);
1023
1024 /* IOCTLs */
1025 extern int drm_mode_getresources(struct drm_device *dev,
1026                                  void *data, struct drm_file *file_priv);
1027 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
1028                                    struct drm_file *file_priv);
1029 extern int drm_mode_getcrtc(struct drm_device *dev,
1030                             void *data, struct drm_file *file_priv);
1031 extern int drm_mode_getconnector(struct drm_device *dev,
1032                               void *data, struct drm_file *file_priv);
1033 extern int drm_mode_set_config_internal(struct drm_mode_set *set);
1034 extern int drm_mode_setcrtc(struct drm_device *dev,
1035                             void *data, struct drm_file *file_priv);
1036 extern int drm_mode_getplane(struct drm_device *dev,
1037                                void *data, struct drm_file *file_priv);
1038 extern int drm_mode_setplane(struct drm_device *dev,
1039                                void *data, struct drm_file *file_priv);
1040 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
1041                                 void *data, struct drm_file *file_priv);
1042 extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
1043                                 void *data, struct drm_file *file_priv);
1044 extern int drm_mode_addfb(struct drm_device *dev,
1045                           void *data, struct drm_file *file_priv);
1046 extern int drm_mode_addfb2(struct drm_device *dev,
1047                            void *data, struct drm_file *file_priv);
1048 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
1049 extern int drm_mode_rmfb(struct drm_device *dev,
1050                          void *data, struct drm_file *file_priv);
1051 extern int drm_mode_getfb(struct drm_device *dev,
1052                           void *data, struct drm_file *file_priv);
1053 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1054                                   void *data, struct drm_file *file_priv);
1055
1056 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
1057                                       void *data, struct drm_file *file_priv);
1058 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
1059                                   void *data, struct drm_file *file_priv);
1060 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
1061                                               void *data, struct drm_file *file_priv);
1062 extern int drm_mode_getencoder(struct drm_device *dev,
1063                                void *data, struct drm_file *file_priv);
1064 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
1065                                     void *data, struct drm_file *file_priv);
1066 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
1067                                     void *data, struct drm_file *file_priv);
1068 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
1069 extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
1070 extern bool drm_detect_hdmi_monitor(struct edid *edid);
1071 extern bool drm_detect_monitor_audio(struct edid *edid);
1072 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
1073 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
1074                                     void *data, struct drm_file *file_priv);
1075 extern int drm_add_modes_noedid(struct drm_connector *connector,
1076                                 int hdisplay, int vdisplay);
1077 extern void drm_set_preferred_mode(struct drm_connector *connector,
1078                                    int hpref, int vpref);
1079
1080 extern int drm_edid_header_is_valid(const u8 *raw_edid);
1081 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
1082 extern bool drm_edid_is_valid(struct edid *edid);
1083 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1084                                            int hsize, int vsize, int fresh,
1085                                            bool rb);
1086
1087 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1088                                       void *data, struct drm_file *file_priv);
1089 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1090                                     void *data, struct drm_file *file_priv);
1091 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1092                                       void *data, struct drm_file *file_priv);
1093 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
1094                                              struct drm_file *file_priv);
1095 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
1096                                            struct drm_file *file_priv);
1097
1098 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1099                                  int *bpp);
1100 extern int drm_format_num_planes(uint32_t format);
1101 extern int drm_format_plane_cpp(uint32_t format, int plane);
1102 extern int drm_format_horz_chroma_subsampling(uint32_t format);
1103 extern int drm_format_vert_chroma_subsampling(uint32_t format);
1104 extern const char *drm_get_format_name(uint32_t format);
1105
1106 /* Helpers */
1107
1108 static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
1109                 uint32_t id)
1110 {
1111         struct drm_mode_object *mo;
1112         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
1113         return mo ? obj_to_plane(mo) : NULL;
1114 }
1115
1116 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
1117         uint32_t id)
1118 {
1119         struct drm_mode_object *mo;
1120         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC);
1121         return mo ? obj_to_crtc(mo) : NULL;
1122 }
1123
1124 static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
1125         uint32_t id)
1126 {
1127         struct drm_mode_object *mo;
1128         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
1129         return mo ? obj_to_encoder(mo) : NULL;
1130 }
1131
1132 static inline struct drm_connector *drm_connector_find(struct drm_device *dev,
1133                 uint32_t id)
1134 {
1135         struct drm_mode_object *mo;
1136         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
1137         return mo ? obj_to_connector(mo) : NULL;
1138 }
1139
1140 static inline struct drm_property *drm_property_find(struct drm_device *dev,
1141                 uint32_t id)
1142 {
1143         struct drm_mode_object *mo;
1144         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
1145         return mo ? obj_to_property(mo) : NULL;
1146 }
1147
1148 static inline struct drm_property_blob *
1149 drm_property_blob_find(struct drm_device *dev, uint32_t id)
1150 {
1151         struct drm_mode_object *mo;
1152         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
1153         return mo ? obj_to_blob(mo) : NULL;
1154 }
1155
1156 /* Plane list iterator for legacy (overlay only) planes. */
1157 #define drm_for_each_legacy_plane(plane, planelist) \
1158         list_for_each_entry(plane, planelist, head) \
1159                 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1160
1161 #endif /* __DRM_CRTC_H__ */