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 <linux/media-bus-format.h>
  35 #include <uapi/drm/drm_mode.h>
  36 #include <uapi/drm/drm_fourcc.h>
  37 #include <drm/drm_modeset_lock.h>
  38
  39 struct drm_device;
  40 struct drm_mode_set;
  41 struct drm_framebuffer;
  42 struct drm_object_properties;
  43 struct drm_file;
  44 struct drm_clip_rect;
  45 struct device_node;
  46 struct fence;
  47
  48 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  49 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  50 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  51 #define DRM_MODE_OBJECT_MODE 0xdededede
  52 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  53 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  54 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  55 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  56 #define DRM_MODE_OBJECT_ANY 0
  57
  58 struct drm_mode_object {
  59         uint32_t id;
  60         uint32_t type;
  61         struct drm_object_properties *properties;
  62 };
  63
  64 #define DRM_OBJECT_MAX_PROPERTY 24
  65 struct drm_object_properties {
  66         int count, atomic_count;
  67         /* NOTE: if we ever start dynamically destroying properties (ie.
  68          * not at drm_mode_config_cleanup() time), then we'd have to do
  69          * a better job of detaching property from mode objects to avoid
  70          * dangling property pointers:
  71          */
  72         struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
  73         /* do not read/write values directly, but use drm_object_property_get_value()
  74          * and drm_object_property_set_value():
  75          */
  76         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  77 };
  78
  79 static inline int64_t U642I64(uint64_t val)
  80 {
  81         return (int64_t)*((int64_t *)&val);
  82 }
  83 static inline uint64_t I642U64(int64_t val)
  84 {
  85         return (uint64_t)*((uint64_t *)&val);
  86 }
  87
  88 /* rotation property bits */
  89 #define DRM_ROTATE_0    0
  90 #define DRM_ROTATE_90   1
  91 #define DRM_ROTATE_180  2
  92 #define DRM_ROTATE_270  3
  93 #define DRM_REFLECT_X   4
  94 #define DRM_REFLECT_Y   5
  95
  96 enum drm_connector_force {
  97         DRM_FORCE_UNSPECIFIED,
  98         DRM_FORCE_OFF,
  99         DRM_FORCE_ON,         /* force on analog part normally */
 100         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
 101 };
 102
 103 #include <drm/drm_modes.h>
 104
 105 enum drm_connector_status {
 106         connector_status_connected = 1,
 107         connector_status_disconnected = 2,
 108         connector_status_unknown = 3,
 109 };
 110
 111 enum subpixel_order {
 112         SubPixelUnknown = 0,
 113         SubPixelHorizontalRGB,
 114         SubPixelHorizontalBGR,
 115         SubPixelVerticalRGB,
 116         SubPixelVerticalBGR,
 117         SubPixelNone,
 118 };
 119
 120 #define DRM_COLOR_FORMAT_RGB444         (1<<0)
 121 #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
 122 #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
 123 /*
 124  * Describes a given display (e.g. CRT or flat panel) and its limitations.
 125  */
 126 struct drm_display_info {
 127         char name[DRM_DISPLAY_INFO_LEN];
 128
 129         /* Physical size */
 130         unsigned int width_mm;
 131         unsigned int height_mm;
 132
 133         /* Clock limits FIXME: storage format */
 134         unsigned int min_vfreq, max_vfreq;
 135         unsigned int min_hfreq, max_hfreq;
 136         unsigned int pixel_clock;
 137         unsigned int bpc;
 138
 139         enum subpixel_order subpixel_order;
 140         u32 color_formats;
 141
 142         const u32 *bus_formats;
 143         unsigned int num_bus_formats;
 144
 145         /* Mask of supported hdmi deep color modes */
 146         u8 edid_hdmi_dc_modes;
 147
 148         u8 cea_rev;
 149 };
 150
 151 /* data corresponds to displayid vend/prod/serial */
 152 struct drm_tile_group {
 153         struct kref refcount;
 154         struct drm_device *dev;
 155         int id;
 156         u8 group_data[8];
 157 };
 158
 159 struct drm_framebuffer_funcs {
 160         /* note: use drm_framebuffer_remove() */
 161         void (*destroy)(struct drm_framebuffer *framebuffer);
 162         int (*create_handle)(struct drm_framebuffer *fb,
 163                              struct drm_file *file_priv,
 164                              unsigned int *handle);
 165         /*
 166          * Optional callback for the dirty fb ioctl.
 167          *
 168          * Userspace can notify the driver via this callback
 169          * that a area of the framebuffer has changed and should
 170          * be flushed to the display hardware.
 171          *
 172          * See documentation in drm_mode.h for the struct
 173          * drm_mode_fb_dirty_cmd for more information as all
 174          * the semantics and arguments have a one to one mapping
 175          * on this function.
 176          */
 177         int (*dirty)(struct drm_framebuffer *framebuffer,
 178                      struct drm_file *file_priv, unsigned flags,
 179                      unsigned color, struct drm_clip_rect *clips,
 180                      unsigned num_clips);
 181 };
 182
 183 struct drm_framebuffer {
 184         struct drm_device *dev;
 185         /*
 186          * Note that the fb is refcounted for the benefit of driver internals,
 187          * for example some hw, disabling a CRTC/plane is asynchronous, and
 188          * scanout does not actually complete until the next vblank.  So some
 189          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
 190          * should be deferred.  In cases like this, the driver would like to
 191          * hold a ref to the fb even though it has already been removed from
 192          * userspace perspective.
 193          */
 194         struct kref refcount;
 195         /*
 196          * Place on the dev->mode_config.fb_list, access protected by
 197          * dev->mode_config.fb_lock.
 198          */
 199         struct list_head head;
 200         struct drm_mode_object base;
 201         const struct drm_framebuffer_funcs *funcs;
 202         unsigned int pitches[4];
 203         unsigned int offsets[4];
 204         uint64_t modifier[4];
 205         unsigned int width;
 206         unsigned int height;
 207         /* depth can be 15 or 16 */
 208         unsigned int depth;
 209         int bits_per_pixel;
 210         int flags;
 211         uint32_t pixel_format; /* fourcc format */
 212         struct list_head filp_head;
 213         /* if you are using the helper */
 214         void *helper_private;
 215 };
 216
 217 struct drm_property_blob {
 218         struct drm_mode_object base;
 219         struct drm_device *dev;
 220         struct kref refcount;
 221         struct list_head head_global;
 222         struct list_head head_file;
 223         size_t length;
 224         unsigned char data[];
 225 };
 226
 227 struct drm_property_enum {
 228         uint64_t value;
 229         struct list_head head;
 230         char name[DRM_PROP_NAME_LEN];
 231 };
 232
 233 struct drm_property {
 234         struct list_head head;
 235         struct drm_mode_object base;
 236         uint32_t flags;
 237         char name[DRM_PROP_NAME_LEN];
 238         uint32_t num_values;
 239         uint64_t *values;
 240         struct drm_device *dev;
 241
 242         struct list_head enum_list;
 243 };
 244
 245 struct drm_crtc;
 246 struct drm_connector;
 247 struct drm_encoder;
 248 struct drm_pending_vblank_event;
 249 struct drm_plane;
 250 struct drm_bridge;
 251 struct drm_atomic_state;
 252
 253 /**
 254  * struct drm_crtc_state - mutable CRTC state
 255  * @crtc: backpointer to the CRTC
 256  * @enable: whether the CRTC should be enabled, gates all other state
 257  * @active: whether the CRTC is actively displaying (used for DPMS)
 258  * @mode_changed: for use by helpers and drivers when computing state updates
 259  * @active_changed: for use by helpers and drivers when computing state updates
 260  * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes
 261  * @last_vblank_count: for helpers and drivers to capture the vblank of the
 262  *      update to ensure framebuffer cleanup isn't done too early
 263  * @planes_changed: for use by helpers and drivers when computing state updates
 264  * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
 265  * @mode: current mode timings
 266  * @event: optional pointer to a DRM event to signal upon completion of the
 267  *      state update
 268  * @state: backpointer to global drm_atomic_state
 269  *
 270  * Note that the distinction between @enable and @active is rather subtile:
 271  * Flipping @active while @enable is set without changing anything else may
 272  * never return in a failure from the ->atomic_check callback. Userspace assumes
 273  * that a DPMS On will always succeed. In other words: @enable controls resource
 274  * assignment, @active controls the actual hardware state.
 275  */
 276 struct drm_crtc_state {
 277         struct drm_crtc *crtc;
 278
 279         bool enable;
 280         bool active;
 281
 282         /* computed state bits used by helpers and drivers */
 283         bool planes_changed : 1;
 284         bool mode_changed : 1;
 285         bool active_changed : 1;
 286
 287         /* attached planes bitmask:
 288          * WARNING: transitional helpers do not maintain plane_mask so
 289          * drivers not converted over to atomic helpers should not rely
 290          * on plane_mask being accurate!
 291          */
 292         u32 plane_mask;
 293
 294         /* last_vblank_count: for vblank waits before cleanup */
 295         u32 last_vblank_count;
 296
 297         /* adjusted_mode: for use by helpers and drivers */
 298         struct drm_display_mode adjusted_mode;
 299
 300         struct drm_display_mode mode;
 301
 302         /* blob property to expose current mode to atomic userspace */
 303         struct drm_property_blob *mode_blob;
 304
 305         struct drm_pending_vblank_event *event;
 306
 307         struct drm_atomic_state *state;
 308 };
 309
 310 /**
 311  * struct drm_crtc_funcs - control CRTCs for a given device
 312  * @save: save CRTC state
 313  * @restore: restore CRTC state
 314  * @reset: reset CRTC after state has been invalidated (e.g. resume)
 315  * @cursor_set: setup the cursor
 316  * @cursor_set2: setup the cursor with hotspot, superseeds @cursor_set if set
 317  * @cursor_move: move the cursor
 318  * @gamma_set: specify color ramp for CRTC
 319  * @destroy: deinit and free object
 320  * @set_property: called when a property is changed
 321  * @set_config: apply a new CRTC configuration
 322  * @page_flip: initiate a page flip
 323  * @atomic_duplicate_state: duplicate the atomic state for this CRTC
 324  * @atomic_destroy_state: destroy an atomic state for this CRTC
 325  * @atomic_set_property: set a property on an atomic state for this CRTC
 326  *    (do not call directly, use drm_atomic_crtc_set_property())
 327  * @atomic_get_property: get a property on an atomic state for this CRTC
 328  *    (do not call directly, use drm_atomic_crtc_get_property())
 329  *
 330  * The drm_crtc_funcs structure is the central CRTC management structure
 331  * in the DRM.  Each CRTC controls one or more connectors (note that the name
 332  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
 333  * connectors, not just CRTs).
 334  *
 335  * Each driver is responsible for filling out this structure at startup time,
 336  * in addition to providing other modesetting features, like i2c and DDC
 337  * bus accessors.
 338  */
 339 struct drm_crtc_funcs {
 340         /* Save CRTC state */
 341         void (*save)(struct drm_crtc *crtc); /* suspend? */
 342         /* Restore CRTC state */
 343         void (*restore)(struct drm_crtc *crtc); /* resume? */
 344         /* Reset CRTC state */
 345         void (*reset)(struct drm_crtc *crtc);
 346
 347         /* cursor controls */
 348         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
 349                           uint32_t handle, uint32_t width, uint32_t height);
 350         int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
 351                            uint32_t handle, uint32_t width, uint32_t height,
 352                            int32_t hot_x, int32_t hot_y);
 353         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
 354
 355         /* Set gamma on the CRTC */
 356         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 357                           uint32_t start, uint32_t size);
 358         /* Object destroy routine */
 359         void (*destroy)(struct drm_crtc *crtc);
 360
 361         int (*set_config)(struct drm_mode_set *set);
 362
 363         /*
 364          * Flip to the given framebuffer.  This implements the page
 365          * flip ioctl described in drm_mode.h, specifically, the
 366          * implementation must return immediately and block all
 367          * rendering to the current fb until the flip has completed.
 368          * If userspace set the event flag in the ioctl, the event
 369          * argument will point to an event to send back when the flip
 370          * completes, otherwise it will be NULL.
 371          */
 372         int (*page_flip)(struct drm_crtc *crtc,
 373                          struct drm_framebuffer *fb,
 374                          struct drm_pending_vblank_event *event,
 375                          uint32_t flags);
 376
 377         int (*set_property)(struct drm_crtc *crtc,
 378                             struct drm_property *property, uint64_t val);
 379
 380         /* atomic update handling */
 381         struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc);
 382         void (*atomic_destroy_state)(struct drm_crtc *crtc,
 383                                      struct drm_crtc_state *state);
 384         int (*atomic_set_property)(struct drm_crtc *crtc,
 385                                    struct drm_crtc_state *state,
 386                                    struct drm_property *property,
 387                                    uint64_t val);
 388         int (*atomic_get_property)(struct drm_crtc *crtc,
 389                                    const struct drm_crtc_state *state,
 390                                    struct drm_property *property,
 391                                    uint64_t *val);
 392 };
 393
 394 /**
 395  * struct drm_crtc - central CRTC control structure
 396  * @dev: parent DRM device
 397  * @port: OF node used by drm_of_find_possible_crtcs()
 398  * @head: list management
 399  * @mutex: per-CRTC locking
 400  * @base: base KMS object for ID tracking etc.
 401  * @primary: primary plane for this CRTC
 402  * @cursor: cursor plane for this CRTC
 403  * @cursor_x: current x position of the cursor, used for universal cursor planes
 404  * @cursor_y: current y position of the cursor, used for universal cursor planes
 405  * @enabled: is this CRTC enabled?
 406  * @mode: current mode timings
 407  * @hwmode: mode timings as programmed to hw regs
 408  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
 409  *    invert the width/height of the crtc.  This is used if the driver
 410  *    is performing 90 or 270 degree rotated scanout
 411  * @x: x position on screen
 412  * @y: y position on screen
 413  * @funcs: CRTC control functions
 414  * @gamma_size: size of gamma ramp
 415  * @gamma_store: gamma ramp values
 416  * @framedur_ns: precise frame timing
 417  * @linedur_ns: precise line timing
 418  * @pixeldur_ns: precise pixel timing
 419  * @helper_private: mid-layer private data
 420  * @properties: property tracking for this CRTC
 421  * @state: current atomic state for this CRTC
 422  * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for
 423  *      legacy ioctls
 424  *
 425  * Each CRTC may have one or more connectors associated with it.  This structure
 426  * allows the CRTC to be controlled.
 427  */
 428 struct drm_crtc {
 429         struct drm_device *dev;
 430         struct device_node *port;
 431         struct list_head head;
 432
 433         /*
 434          * crtc mutex
 435          *
 436          * This provides a read lock for the overall crtc state (mode, dpms
 437          * state, ...) and a write lock for everything which can be update
 438          * without a full modeset (fb, cursor data, ...)
 439          */
 440         struct drm_modeset_lock mutex;
 441
 442         struct drm_mode_object base;
 443
 444         /* primary and cursor planes for CRTC */
 445         struct drm_plane *primary;
 446         struct drm_plane *cursor;
 447
 448         /* position of cursor plane on crtc */
 449         int cursor_x;
 450         int cursor_y;
 451
 452         bool enabled;
 453
 454         /* Requested mode from modesetting. */
 455         struct drm_display_mode mode;
 456
 457         /* Programmed mode in hw, after adjustments for encoders,
 458          * crtc, panel scaling etc. Needed for timestamping etc.
 459          */
 460         struct drm_display_mode hwmode;
 461
 462         bool invert_dimensions;
 463
 464         int x, y;
 465         const struct drm_crtc_funcs *funcs;
 466
 467         /* CRTC gamma size for reporting to userspace */
 468         uint32_t gamma_size;
 469         uint16_t *gamma_store;
 470
 471         /* Constants needed for precise vblank and swap timestamping. */
 472         int framedur_ns, linedur_ns, pixeldur_ns;
 473
 474         /* if you are using the helper */
 475         const void *helper_private;
 476
 477         struct drm_object_properties properties;
 478
 479         struct drm_crtc_state *state;
 480
 481         /*
 482          * For legacy crtc ioctls so that atomic drivers can get at the locking
 483          * acquire context.
 484          */
 485         struct drm_modeset_acquire_ctx *acquire_ctx;
 486 };
 487
 488 /**
 489  * struct drm_connector_state - mutable connector state
 490  * @connector: backpointer to the connector
 491  * @crtc: CRTC to connect connector to, NULL if disabled
 492  * @best_encoder: can be used by helpers and drivers to select the encoder
 493  * @state: backpointer to global drm_atomic_state
 494  */
 495 struct drm_connector_state {
 496         struct drm_connector *connector;
 497
 498         struct drm_crtc *crtc;  /* do not write directly, use drm_atomic_set_crtc_for_connector() */
 499
 500         struct drm_encoder *best_encoder;
 501
 502         struct drm_atomic_state *state;
 503 };
 504
 505 /**
 506  * struct drm_connector_funcs - control connectors on a given device
 507  * @dpms: set power state
 508  * @save: save connector state
 509  * @restore: restore connector state
 510  * @reset: reset connector after state has been invalidated (e.g. resume)
 511  * @detect: is this connector active?
 512  * @fill_modes: fill mode list for this connector
 513  * @set_property: property for this connector may need an update
 514  * @destroy: make object go away
 515  * @force: notify the driver that the connector is forced on
 516  * @atomic_duplicate_state: duplicate the atomic state for this connector
 517  * @atomic_destroy_state: destroy an atomic state for this connector
 518  * @atomic_set_property: set a property on an atomic state for this connector
 519  *    (do not call directly, use drm_atomic_connector_set_property())
 520  * @atomic_get_property: get a property on an atomic state for this connector
 521  *    (do not call directly, use drm_atomic_connector_get_property())
 522  *
 523  * Each CRTC may have one or more connectors attached to it.  The functions
 524  * below allow the core DRM code to control connectors, enumerate available modes,
 525  * etc.
 526  */
 527 struct drm_connector_funcs {
 528         void (*dpms)(struct drm_connector *connector, int mode);
 529         void (*save)(struct drm_connector *connector);
 530         void (*restore)(struct drm_connector *connector);
 531         void (*reset)(struct drm_connector *connector);
 532
 533         /* Check to see if anything is attached to the connector.
 534          * @force is set to false whilst polling, true when checking the
 535          * connector due to user request. @force can be used by the driver
 536          * to avoid expensive, destructive operations during automated
 537          * probing.
 538          */
 539         enum drm_connector_status (*detect)(struct drm_connector *connector,
 540                                             bool force);
 541         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
 542         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
 543                              uint64_t val);
 544         void (*destroy)(struct drm_connector *connector);
 545         void (*force)(struct drm_connector *connector);
 546
 547         /* atomic update handling */
 548         struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
 549         void (*atomic_destroy_state)(struct drm_connector *connector,
 550                                      struct drm_connector_state *state);
 551         int (*atomic_set_property)(struct drm_connector *connector,
 552                                    struct drm_connector_state *state,
 553                                    struct drm_property *property,
 554                                    uint64_t val);
 555         int (*atomic_get_property)(struct drm_connector *connector,
 556                                    const struct drm_connector_state *state,
 557                                    struct drm_property *property,
 558                                    uint64_t *val);
 559 };
 560
 561 /**
 562  * struct drm_encoder_funcs - encoder controls
 563  * @reset: reset state (e.g. at init or resume time)
 564  * @destroy: cleanup and free associated data
 565  *
 566  * Encoders sit between CRTCs and connectors.
 567  */
 568 struct drm_encoder_funcs {
 569         void (*reset)(struct drm_encoder *encoder);
 570         void (*destroy)(struct drm_encoder *encoder);
 571 };
 572
 573 #define DRM_CONNECTOR_MAX_ENCODER 3
 574
 575 /**
 576  * struct drm_encoder - central DRM encoder structure
 577  * @dev: parent DRM device
 578  * @head: list management
 579  * @base: base KMS object
 580  * @name: encoder name
 581  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
 582  * @possible_crtcs: bitmask of potential CRTC bindings
 583  * @possible_clones: bitmask of potential sibling encoders for cloning
 584  * @crtc: currently bound CRTC
 585  * @bridge: bridge associated to the encoder
 586  * @funcs: control functions
 587  * @helper_private: mid-layer private data
 588  *
 589  * CRTCs drive pixels to encoders, which convert them into signals
 590  * appropriate for a given connector or set of connectors.
 591  */
 592 struct drm_encoder {
 593         struct drm_device *dev;
 594         struct list_head head;
 595
 596         struct drm_mode_object base;
 597         char *name;
 598         int encoder_type;
 599         uint32_t possible_crtcs;
 600         uint32_t possible_clones;
 601
 602         struct drm_crtc *crtc;
 603         struct drm_bridge *bridge;
 604         const struct drm_encoder_funcs *funcs;
 605         const void *helper_private;
 606 };
 607
 608 /* should we poll this connector for connects and disconnects */
 609 /* hot plug detectable */
 610 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
 611 /* poll for connections */
 612 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
 613 /* can cleanly poll for disconnections without flickering the screen */
 614 /* DACs should rarely do this without a lot of testing */
 615 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
 616
 617 #define MAX_ELD_BYTES   128
 618
 619 /**
 620  * struct drm_connector - central DRM connector control structure
 621  * @dev: parent DRM device
 622  * @kdev: kernel device for sysfs attributes
 623  * @attr: sysfs attributes
 624  * @head: list management
 625  * @base: base KMS object
 626  * @name: connector name
 627  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
 628  * @connector_type_id: index into connector type enum
 629  * @interlace_allowed: can this connector handle interlaced modes?
 630  * @doublescan_allowed: can this connector handle doublescan?
 631  * @stereo_allowed: can this connector handle stereo modes?
 632  * @modes: modes available on this connector (from fill_modes() + user)
 633  * @status: one of the drm_connector_status enums (connected, not, or unknown)
 634  * @probed_modes: list of modes derived directly from the display
 635  * @display_info: information about attached display (e.g. from EDID)
 636  * @funcs: connector control functions
 637  * @edid_blob_ptr: DRM property containing EDID if present
 638  * @properties: property tracking for this connector
 639  * @path_blob_ptr: DRM blob property data for the DP MST path property
 640  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
 641  * @dpms: current dpms state
 642  * @helper_private: mid-layer private data
 643  * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
 644  * @force: a %DRM_FORCE_<foo> state for forced mode sets
 645  * @override_edid: has the EDID been overwritten through debugfs for testing?
 646  * @encoder_ids: valid encoders for this connector
 647  * @encoder: encoder driving this connector, if any
 648  * @eld: EDID-like data, if present
 649  * @dvi_dual: dual link DVI, if found
 650  * @max_tmds_clock: max clock rate, if found
 651  * @latency_present: AV delay info from ELD, if found
 652  * @video_latency: video latency info from ELD, if found
 653  * @audio_latency: audio latency info from ELD, if found
 654  * @null_edid_counter: track sinks that give us all zeros for the EDID
 655  * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
 656  * @edid_corrupt: indicates whether the last read EDID was corrupt
 657  * @debugfs_entry: debugfs directory for this connector
 658  * @state: current atomic state for this connector
 659  * @has_tile: is this connector connected to a tiled monitor
 660  * @tile_group: tile group for the connected monitor
 661  * @tile_is_single_monitor: whether the tile is one monitor housing
 662  * @num_h_tile: number of horizontal tiles in the tile group
 663  * @num_v_tile: number of vertical tiles in the tile group
 664  * @tile_h_loc: horizontal location of this tile
 665  * @tile_v_loc: vertical location of this tile
 666  * @tile_h_size: horizontal size of this tile.
 667  * @tile_v_size: vertical size of this tile.
 668  *
 669  * Each connector may be connected to one or more CRTCs, or may be clonable by
 670  * another connector if they can share a CRTC.  Each connector also has a specific
 671  * position in the broader display (referred to as a 'screen' though it could
 672  * span multiple monitors).
 673  */
 674 struct drm_connector {
 675         struct drm_device *dev;
 676         struct device *kdev;
 677         struct device_attribute *attr;
 678         struct list_head head;
 679
 680         struct drm_mode_object base;
 681
 682         char *name;
 683         int connector_type;
 684         int connector_type_id;
 685         bool interlace_allowed;
 686         bool doublescan_allowed;
 687         bool stereo_allowed;
 688         struct list_head modes; /* list of modes on this connector */
 689
 690         enum drm_connector_status status;
 691
 692         /* these are modes added by probing with DDC or the BIOS */
 693         struct list_head probed_modes;
 694
 695         struct drm_display_info display_info;
 696         const struct drm_connector_funcs *funcs;
 697
 698         struct drm_property_blob *edid_blob_ptr;
 699         struct drm_object_properties properties;
 700
 701         struct drm_property_blob *path_blob_ptr;
 702
 703         struct drm_property_blob *tile_blob_ptr;
 704
 705         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
 706
 707         /* requested DPMS state */
 708         int dpms;
 709
 710         const void *helper_private;
 711
 712         /* forced on connector */
 713         struct drm_cmdline_mode cmdline_mode;
 714         enum drm_connector_force force;
 715         bool override_edid;
 716         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
 717         struct drm_encoder *encoder; /* currently active encoder */
 718
 719         /* EDID bits */
 720         uint8_t eld[MAX_ELD_BYTES];
 721         bool dvi_dual;
 722         int max_tmds_clock;     /* in MHz */
 723         bool latency_present[2];
 724         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
 725         int audio_latency[2];
 726         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
 727         unsigned bad_edid_counter;
 728
 729         /* Flag for raw EDID header corruption - used in Displayport
 730          * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6
 731          */
 732         bool edid_corrupt;
 733
 734         struct dentry *debugfs_entry;
 735
 736         struct drm_connector_state *state;
 737
 738         /* DisplayID bits */
 739         bool has_tile;
 740         struct drm_tile_group *tile_group;
 741         bool tile_is_single_monitor;
 742
 743         uint8_t num_h_tile, num_v_tile;
 744         uint8_t tile_h_loc, tile_v_loc;
 745         uint16_t tile_h_size, tile_v_size;
 746
 747         struct list_head destroy_list;
 748 };
 749
 750 /**
 751  * struct drm_plane_state - mutable plane state
 752  * @plane: backpointer to the plane
 753  * @crtc: currently bound CRTC, NULL if disabled
 754  * @fb: currently bound framebuffer
 755  * @fence: optional fence to wait for before scanning out @fb
 756  * @crtc_x: left position of visible portion of plane on crtc
 757  * @crtc_y: upper position of visible portion of plane on crtc
 758  * @crtc_w: width of visible portion of plane on crtc
 759  * @crtc_h: height of visible portion of plane on crtc
 760  * @src_x: left position of visible portion of plane within
 761  *      plane (in 16.16)
 762  * @src_y: upper position of visible portion of plane within
 763  *      plane (in 16.16)
 764  * @src_w: width of visible portion of plane (in 16.16)
 765  * @src_h: height of visible portion of plane (in 16.16)
 766  * @state: backpointer to global drm_atomic_state
 767  */
 768 struct drm_plane_state {
 769         struct drm_plane *plane;
 770
 771         struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
 772         struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
 773         struct fence *fence;
 774
 775         /* Signed dest location allows it to be partially off screen */
 776         int32_t crtc_x, crtc_y;
 777         uint32_t crtc_w, crtc_h;
 778
 779         /* Source values are 16.16 fixed point */
 780         uint32_t src_x, src_y;
 781         uint32_t src_h, src_w;
 782
 783         /* Plane rotation */
 784         unsigned int rotation;
 785
 786         struct drm_atomic_state *state;
 787 };
 788
 789
 790 /**
 791  * struct drm_plane_funcs - driver plane control functions
 792  * @update_plane: update the plane configuration
 793  * @disable_plane: shut down the plane
 794  * @destroy: clean up plane resources
 795  * @reset: reset plane after state has been invalidated (e.g. resume)
 796  * @set_property: called when a property is changed
 797  * @atomic_duplicate_state: duplicate the atomic state for this plane
 798  * @atomic_destroy_state: destroy an atomic state for this plane
 799  * @atomic_set_property: set a property on an atomic state for this plane
 800  *    (do not call directly, use drm_atomic_plane_set_property())
 801  * @atomic_get_property: get a property on an atomic state for this plane
 802  *    (do not call directly, use drm_atomic_plane_get_property())
 803  */
 804 struct drm_plane_funcs {
 805         int (*update_plane)(struct drm_plane *plane,
 806                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
 807                             int crtc_x, int crtc_y,
 808                             unsigned int crtc_w, unsigned int crtc_h,
 809                             uint32_t src_x, uint32_t src_y,
 810                             uint32_t src_w, uint32_t src_h);
 811         int (*disable_plane)(struct drm_plane *plane);
 812         void (*destroy)(struct drm_plane *plane);
 813         void (*reset)(struct drm_plane *plane);
 814
 815         int (*set_property)(struct drm_plane *plane,
 816                             struct drm_property *property, uint64_t val);
 817
 818         /* atomic update handling */
 819         struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
 820         void (*atomic_destroy_state)(struct drm_plane *plane,
 821                                      struct drm_plane_state *state);
 822         int (*atomic_set_property)(struct drm_plane *plane,
 823                                    struct drm_plane_state *state,
 824                                    struct drm_property *property,
 825                                    uint64_t val);
 826         int (*atomic_get_property)(struct drm_plane *plane,
 827                                    const struct drm_plane_state *state,
 828                                    struct drm_property *property,
 829                                    uint64_t *val);
 830 };
 831
 832 enum drm_plane_type {
 833         DRM_PLANE_TYPE_OVERLAY,
 834         DRM_PLANE_TYPE_PRIMARY,
 835         DRM_PLANE_TYPE_CURSOR,
 836 };
 837
 838 /**
 839  * struct drm_plane - central DRM plane control structure
 840  * @dev: DRM device this plane belongs to
 841  * @head: for list management
 842  * @base: base mode object
 843  * @possible_crtcs: pipes this plane can be bound to
 844  * @format_types: array of formats supported by this plane
 845  * @format_count: number of formats supported
 846  * @format_default: driver hasn't supplied supported formats for the plane
 847  * @crtc: currently bound CRTC
 848  * @fb: currently bound fb
 849  * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
 850  *      drm_mode_set_config_internal() to implement correct refcounting.
 851  * @funcs: helper functions
 852  * @properties: property tracking for this plane
 853  * @type: type of plane (overlay, primary, cursor)
 854  * @state: current atomic state for this plane
 855  */
 856 struct drm_plane {
 857         struct drm_device *dev;
 858         struct list_head head;
 859
 860         struct drm_modeset_lock mutex;
 861
 862         struct drm_mode_object base;
 863
 864         uint32_t possible_crtcs;
 865         uint32_t *format_types;
 866         uint32_t format_count;
 867         bool format_default;
 868
 869         struct drm_crtc *crtc;
 870         struct drm_framebuffer *fb;
 871
 872         struct drm_framebuffer *old_fb;
 873
 874         const struct drm_plane_funcs *funcs;
 875
 876         struct drm_object_properties properties;
 877
 878         enum drm_plane_type type;
 879
 880         const void *helper_private;
 881
 882         struct drm_plane_state *state;
 883 };
 884
 885 /**
 886  * struct drm_bridge_funcs - drm_bridge control functions
 887  * @attach: Called during drm_bridge_attach
 888  * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
 889  * @disable: Called right before encoder prepare, disables the bridge
 890  * @post_disable: Called right after encoder prepare, for lockstepped disable
 891  * @mode_set: Set this mode to the bridge
 892  * @pre_enable: Called right before encoder commit, for lockstepped commit
 893  * @enable: Called right after encoder commit, enables the bridge
 894  */
 895 struct drm_bridge_funcs {
 896         int (*attach)(struct drm_bridge *bridge);
 897         bool (*mode_fixup)(struct drm_bridge *bridge,
 898                            const struct drm_display_mode *mode,
 899                            struct drm_display_mode *adjusted_mode);
 900         void (*disable)(struct drm_bridge *bridge);
 901         void (*post_disable)(struct drm_bridge *bridge);
 902         void (*mode_set)(struct drm_bridge *bridge,
 903                          struct drm_display_mode *mode,
 904                          struct drm_display_mode *adjusted_mode);
 905         void (*pre_enable)(struct drm_bridge *bridge);
 906         void (*enable)(struct drm_bridge *bridge);
 907 };
 908
 909 /**
 910  * struct drm_bridge - central DRM bridge control structure
 911  * @dev: DRM device this bridge belongs to
 912  * @encoder: encoder to which this bridge is connected
 913  * @next: the next bridge in the encoder chain
 914  * @of_node: device node pointer to the bridge
 915  * @list: to keep track of all added bridges
 916  * @base: base mode object
 917  * @funcs: control functions
 918  * @driver_private: pointer to the bridge driver's internal context
 919  */
 920 struct drm_bridge {
 921         struct drm_device *dev;
 922         struct drm_encoder *encoder;
 923         struct drm_bridge *next;
 924 #ifdef CONFIG_OF
 925         struct device_node *of_node;
 926 #endif
 927         struct list_head list;
 928
 929         const struct drm_bridge_funcs *funcs;
 930         void *driver_private;
 931 };
 932
 933 /**
 934  * struct drm_atomic_state - the global state object for atomic updates
 935  * @dev: parent DRM device
 936  * @allow_modeset: allow full modeset
 937  * @legacy_cursor_update: hint to enforce legacy cursor ioctl semantics
 938  * @planes: pointer to array of plane pointers
 939  * @plane_states: pointer to array of plane states pointers
 940  * @crtcs: pointer to array of CRTC pointers
 941  * @crtc_states: pointer to array of CRTC states pointers
 942  * @num_connector: size of the @connectors and @connector_states arrays
 943  * @connectors: pointer to array of connector pointers
 944  * @connector_states: pointer to array of connector states pointers
 945  * @acquire_ctx: acquire context for this atomic modeset state update
 946  */
 947 struct drm_atomic_state {
 948         struct drm_device *dev;
 949         bool allow_modeset : 1;
 950         bool legacy_cursor_update : 1;
 951         struct drm_plane **planes;
 952         struct drm_plane_state **plane_states;
 953         struct drm_crtc **crtcs;
 954         struct drm_crtc_state **crtc_states;
 955         int num_connector;
 956         struct drm_connector **connectors;
 957         struct drm_connector_state **connector_states;
 958
 959         struct drm_modeset_acquire_ctx *acquire_ctx;
 960 };
 961
 962
 963 /**
 964  * struct drm_mode_set - new values for a CRTC config change
 965  * @fb: framebuffer to use for new config
 966  * @crtc: CRTC whose configuration we're about to change
 967  * @mode: mode timings to use
 968  * @x: position of this CRTC relative to @fb
 969  * @y: position of this CRTC relative to @fb
 970  * @connectors: array of connectors to drive with this CRTC if possible
 971  * @num_connectors: size of @connectors array
 972  *
 973  * Represents a single crtc the connectors that it drives with what mode
 974  * and from which framebuffer it scans out from.
 975  *
 976  * This is used to set modes.
 977  */
 978 struct drm_mode_set {
 979         struct drm_framebuffer *fb;
 980         struct drm_crtc *crtc;
 981         struct drm_display_mode *mode;
 982
 983         uint32_t x;
 984         uint32_t y;
 985
 986         struct drm_connector **connectors;
 987         size_t num_connectors;
 988 };
 989
 990 /**
 991  * struct drm_mode_config_funcs - basic driver provided mode setting functions
 992  * @fb_create: create a new framebuffer object
 993  * @output_poll_changed: function to handle output configuration changes
 994  * @atomic_check: check whether a given atomic state update is possible
 995  * @atomic_commit: commit an atomic state update previously verified with
 996  *      atomic_check()
 997  * @atomic_state_alloc: allocate a new atomic state
 998  * @atomic_state_clear: clear the atomic state
 999  * @atomic_state_free: free the atomic state
1000  *
1001  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
1002  * involve drivers.
1003  */
1004 struct drm_mode_config_funcs {
1005         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
1006                                              struct drm_file *file_priv,
1007                                              struct drm_mode_fb_cmd2 *mode_cmd);
1008         void (*output_poll_changed)(struct drm_device *dev);
1009
1010         int (*atomic_check)(struct drm_device *dev,
1011                             struct drm_atomic_state *a);
1012         int (*atomic_commit)(struct drm_device *dev,
1013                              struct drm_atomic_state *a,
1014                              bool async);
1015         struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev);
1016         void (*atomic_state_clear)(struct drm_atomic_state *state);
1017         void (*atomic_state_free)(struct drm_atomic_state *state);
1018 };
1019
1020 /**
1021  * struct drm_mode_group - group of mode setting resources for potential sub-grouping
1022  * @num_crtcs: CRTC count
1023  * @num_encoders: encoder count
1024  * @num_connectors: connector count
1025  * @num_bridges: bridge count
1026  * @id_list: list of KMS object IDs in this group
1027  *
1028  * Currently this simply tracks the global mode setting state.  But in the
1029  * future it could allow groups of objects to be set aside into independent
1030  * control groups for use by different user level processes (e.g. two X servers
1031  * running simultaneously on different heads, each with their own mode
1032  * configuration and freedom of mode setting).
1033  */
1034 struct drm_mode_group {
1035         uint32_t num_crtcs;
1036         uint32_t num_encoders;
1037         uint32_t num_connectors;
1038
1039         /* list of object IDs for this group */
1040         uint32_t *id_list;
1041 };
1042
1043 /**
1044  * struct drm_mode_config - Mode configuration control structure
1045  * @mutex: mutex protecting KMS related lists and structures
1046  * @connection_mutex: ww mutex protecting connector state and routing
1047  * @acquire_ctx: global implicit acquire context used by atomic drivers for
1048  *      legacy ioctls
1049  * @idr_mutex: mutex for KMS ID allocation and management
1050  * @crtc_idr: main KMS ID tracking object
1051  * @fb_lock: mutex to protect fb state and lists
1052  * @num_fb: number of fbs available
1053  * @fb_list: list of framebuffers available
1054  * @num_connector: number of connectors on this device
1055  * @connector_list: list of connector objects
1056  * @num_encoder: number of encoders on this device
1057  * @encoder_list: list of encoder objects
1058  * @num_overlay_plane: number of overlay planes on this device
1059  * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
1060  * @plane_list: list of plane objects
1061  * @num_crtc: number of CRTCs on this device
1062  * @crtc_list: list of CRTC objects
1063  * @property_list: list of property objects
1064  * @min_width: minimum pixel width on this device
1065  * @min_height: minimum pixel height on this device
1066  * @max_width: maximum pixel width on this device
1067  * @max_height: maximum pixel height on this device
1068  * @funcs: core driver provided mode setting functions
1069  * @fb_base: base address of the framebuffer
1070  * @poll_enabled: track polling support for this device
1071  * @poll_running: track polling status for this device
1072  * @output_poll_work: delayed work for polling in process context
1073  * @property_blob_list: list of all the blob property objects
1074  * @blob_lock: mutex for blob property allocation and management
1075  * @*_property: core property tracking
1076  * @preferred_depth: preferred RBG pixel depth, used by fb helpers
1077  * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
1078  * @async_page_flip: does this device support async flips on the primary plane?
1079  * @cursor_width: hint to userspace for max cursor width
1080  * @cursor_height: hint to userspace for max cursor height
1081  *
1082  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
1083  * enumerated by the driver are added here, as are global properties.  Some
1084  * global restrictions are also here, e.g. dimension restrictions.
1085  */
1086 struct drm_mode_config {
1087         struct mutex mutex; /* protects configuration (mode lists etc.) */
1088         struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
1089         struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
1090         struct mutex idr_mutex; /* for IDR management */
1091         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
1092         struct idr tile_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
1093         /* this is limited to one for now */
1094
1095         struct mutex fb_lock; /* proctects global and per-file fb lists */
1096         int num_fb;
1097         struct list_head fb_list;
1098
1099         int num_connector;
1100         struct list_head connector_list;
1101         int num_encoder;
1102         struct list_head encoder_list;
1103
1104         /*
1105          * Track # of overlay planes separately from # of total planes.  By
1106          * default we only advertise overlay planes to userspace; if userspace
1107          * sets the "universal plane" capability bit, we'll go ahead and
1108          * expose all planes.
1109          */
1110         int num_overlay_plane;
1111         int num_total_plane;
1112         struct list_head plane_list;
1113
1114         int num_crtc;
1115         struct list_head crtc_list;
1116
1117         struct list_head property_list;
1118
1119         int min_width, min_height;
1120         int max_width, max_height;
1121         const struct drm_mode_config_funcs *funcs;
1122         resource_size_t fb_base;
1123
1124         /* output poll support */
1125         bool poll_enabled;
1126         bool poll_running;
1127         bool delayed_event;
1128         struct delayed_work output_poll_work;
1129
1130         struct mutex blob_lock;
1131
1132         /* pointers to standard properties */
1133         struct list_head property_blob_list;
1134         struct drm_property *edid_property;
1135         struct drm_property *dpms_property;
1136         struct drm_property *path_property;
1137         struct drm_property *tile_property;
1138         struct drm_property *plane_type_property;
1139         struct drm_property *rotation_property;
1140         struct drm_property *prop_src_x;
1141         struct drm_property *prop_src_y;
1142         struct drm_property *prop_src_w;
1143         struct drm_property *prop_src_h;
1144         struct drm_property *prop_crtc_x;
1145         struct drm_property *prop_crtc_y;
1146         struct drm_property *prop_crtc_w;
1147         struct drm_property *prop_crtc_h;
1148         struct drm_property *prop_fb_id;
1149         struct drm_property *prop_crtc_id;
1150         struct drm_property *prop_active;
1151         struct drm_property *prop_mode_id;
1152
1153         /* DVI-I properties */
1154         struct drm_property *dvi_i_subconnector_property;
1155         struct drm_property *dvi_i_select_subconnector_property;
1156
1157         /* TV properties */
1158         struct drm_property *tv_subconnector_property;
1159         struct drm_property *tv_select_subconnector_property;
1160         struct drm_property *tv_mode_property;
1161         struct drm_property *tv_left_margin_property;
1162         struct drm_property *tv_right_margin_property;
1163         struct drm_property *tv_top_margin_property;
1164         struct drm_property *tv_bottom_margin_property;
1165         struct drm_property *tv_brightness_property;
1166         struct drm_property *tv_contrast_property;
1167         struct drm_property *tv_flicker_reduction_property;
1168         struct drm_property *tv_overscan_property;
1169         struct drm_property *tv_saturation_property;
1170         struct drm_property *tv_hue_property;
1171
1172         /* Optional properties */
1173         struct drm_property *scaling_mode_property;
1174         struct drm_property *aspect_ratio_property;
1175         struct drm_property *dirty_info_property;
1176
1177         /* properties for virtual machine layout */
1178         struct drm_property *suggested_x_property;
1179         struct drm_property *suggested_y_property;
1180
1181         /* dumb ioctl parameters */
1182         uint32_t preferred_depth, prefer_shadow;
1183
1184         /* whether async page flip is supported or not */
1185         bool async_page_flip;
1186
1187         /* whether the driver supports fb modifiers */
1188         bool allow_fb_modifiers;
1189
1190         /* cursor size */
1191         uint32_t cursor_width, cursor_height;
1192 };
1193
1194 /**
1195  * drm_for_each_plane_mask - iterate over planes specified by bitmask
1196  * @plane: the loop cursor
1197  * @dev: the DRM device
1198  * @plane_mask: bitmask of plane indices
1199  *
1200  * Iterate over all planes specified by bitmask.
1201  */
1202 #define drm_for_each_plane_mask(plane, dev, plane_mask) \
1203         list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
1204                 if ((plane_mask) & (1 << drm_plane_index(plane)))
1205
1206
1207 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
1208 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
1209 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
1210 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
1211 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
1212 #define obj_to_property(x) container_of(x, struct drm_property, base)
1213 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
1214 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
1215
1216 struct drm_prop_enum_list {
1217         int type;
1218         char *name;
1219 };
1220
1221 extern int drm_crtc_init_with_planes(struct drm_device *dev,
1222                                      struct drm_crtc *crtc,
1223                                      struct drm_plane *primary,
1224                                      struct drm_plane *cursor,
1225                                      const struct drm_crtc_funcs *funcs);
1226 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
1227 extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
1228
1229 /**
1230  * drm_crtc_mask - find the mask of a registered CRTC
1231  * @crtc: CRTC to find mask for
1232  *
1233  * Given a registered CRTC, return the mask bit of that CRTC for an
1234  * encoder's possible_crtcs field.
1235  */
1236 static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
1237 {
1238         return 1 << drm_crtc_index(crtc);
1239 }
1240
1241 extern void drm_connector_ida_init(void);
1242 extern void drm_connector_ida_destroy(void);
1243 extern int drm_connector_init(struct drm_device *dev,
1244                               struct drm_connector *connector,
1245                               const struct drm_connector_funcs *funcs,
1246                               int connector_type);
1247 int drm_connector_register(struct drm_connector *connector);
1248 void drm_connector_unregister(struct drm_connector *connector);
1249
1250 extern void drm_connector_cleanup(struct drm_connector *connector);
1251 extern unsigned int drm_connector_index(struct drm_connector *connector);
1252 /* helper to unplug all connectors from sysfs for device */
1253 extern void drm_connector_unplug_all(struct drm_device *dev);
1254
1255 extern int drm_bridge_add(struct drm_bridge *bridge);
1256 extern void drm_bridge_remove(struct drm_bridge *bridge);
1257 extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
1258 extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
1259
1260 bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
1261                         const struct drm_display_mode *mode,
1262                         struct drm_display_mode *adjusted_mode);
1263 void drm_bridge_disable(struct drm_bridge *bridge);
1264 void drm_bridge_post_disable(struct drm_bridge *bridge);
1265 void drm_bridge_mode_set(struct drm_bridge *bridge,
1266                         struct drm_display_mode *mode,
1267                         struct drm_display_mode *adjusted_mode);
1268 void drm_bridge_pre_enable(struct drm_bridge *bridge);
1269 void drm_bridge_enable(struct drm_bridge *bridge);
1270
1271 extern int drm_encoder_init(struct drm_device *dev,
1272                             struct drm_encoder *encoder,
1273                             const struct drm_encoder_funcs *funcs,
1274                             int encoder_type);
1275
1276 /**
1277  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
1278  * @encoder: encoder to test
1279  * @crtc: crtc to test
1280  *
1281  * Return false if @encoder can't be driven by @crtc, true otherwise.
1282  */
1283 static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
1284                                        struct drm_crtc *crtc)
1285 {
1286         return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
1287 }
1288
1289 extern int drm_universal_plane_init(struct drm_device *dev,
1290                                     struct drm_plane *plane,
1291                                     unsigned long possible_crtcs,
1292                                     const struct drm_plane_funcs *funcs,
1293                                     const uint32_t *formats,
1294                                     uint32_t format_count,
1295                                     enum drm_plane_type type);
1296 extern int drm_plane_init(struct drm_device *dev,
1297                           struct drm_plane *plane,
1298                           unsigned long possible_crtcs,
1299                           const struct drm_plane_funcs *funcs,
1300                           const uint32_t *formats, uint32_t format_count,
1301                           bool is_primary);
1302 extern void drm_plane_cleanup(struct drm_plane *plane);
1303 extern unsigned int drm_plane_index(struct drm_plane *plane);
1304 extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
1305 extern void drm_plane_force_disable(struct drm_plane *plane);
1306 extern int drm_plane_check_pixel_format(const struct drm_plane *plane,
1307                                         u32 format);
1308 extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
1309                                    int *hdisplay, int *vdisplay);
1310 extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
1311                                    int x, int y,
1312                                    const struct drm_display_mode *mode,
1313                                    const struct drm_framebuffer *fb);
1314
1315 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
1316
1317 extern const char *drm_get_connector_status_name(enum drm_connector_status status);
1318 extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
1319 extern const char *drm_get_dpms_name(int val);
1320 extern const char *drm_get_dvi_i_subconnector_name(int val);
1321 extern const char *drm_get_dvi_i_select_name(int val);
1322 extern const char *drm_get_tv_subconnector_name(int val);
1323 extern const char *drm_get_tv_select_name(int val);
1324 extern void drm_fb_release(struct drm_file *file_priv);
1325 extern void drm_property_destroy_user_blobs(struct drm_device *dev,
1326                                             struct drm_file *file_priv);
1327 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
1328 extern void drm_mode_group_destroy(struct drm_mode_group *group);
1329 extern void drm_reinit_primary_mode_group(struct drm_device *dev);
1330 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
1331 extern struct edid *drm_get_edid(struct drm_connector *connector,
1332                                  struct i2c_adapter *adapter);
1333 extern struct edid *drm_edid_duplicate(const struct edid *edid);
1334 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
1335 extern void drm_mode_config_init(struct drm_device *dev);
1336 extern void drm_mode_config_reset(struct drm_device *dev);
1337 extern void drm_mode_config_cleanup(struct drm_device *dev);
1338
1339 extern int drm_mode_connector_set_path_property(struct drm_connector *connector,
1340                                                 const char *path);
1341 int drm_mode_connector_set_tile_property(struct drm_connector *connector);
1342 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
1343                                                    const struct edid *edid);
1344
1345 extern int drm_display_info_set_bus_formats(struct drm_display_info *info,
1346                                             const u32 *formats,
1347                                             unsigned int num_formats);
1348
1349 static inline bool drm_property_type_is(struct drm_property *property,
1350                 uint32_t type)
1351 {
1352         /* instanceof for props.. handles extended type vs original types: */
1353         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
1354                 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
1355         return property->flags & type;
1356 }
1357
1358 static inline bool drm_property_type_valid(struct drm_property *property)
1359 {
1360         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
1361                 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
1362         return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
1363 }
1364
1365 extern int drm_object_property_set_value(struct drm_mode_object *obj,
1366                                          struct drm_property *property,
1367                                          uint64_t val);
1368 extern int drm_object_property_get_value(struct drm_mode_object *obj,
1369                                          struct drm_property *property,
1370                                          uint64_t *value);
1371 extern int drm_framebuffer_init(struct drm_device *dev,
1372                                 struct drm_framebuffer *fb,
1373                                 const struct drm_framebuffer_funcs *funcs);
1374 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
1375                                                       uint32_t id);
1376 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
1377 extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
1378 extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
1379 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
1380 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
1381
1382 extern void drm_object_attach_property(struct drm_mode_object *obj,
1383                                        struct drm_property *property,
1384                                        uint64_t init_val);
1385 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1386                                                 const char *name, int num_values);
1387 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
1388                                          const char *name,
1389                                          const struct drm_prop_enum_list *props,
1390                                          int num_values);
1391 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
1392                                          int flags, const char *name,
1393                                          const struct drm_prop_enum_list *props,
1394                                          int num_props,
1395                                          uint64_t supported_bits);
1396 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
1397                                          const char *name,
1398                                          uint64_t min, uint64_t max);
1399 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
1400                                          int flags, const char *name,
1401                                          int64_t min, int64_t max);
1402 struct drm_property *drm_property_create_object(struct drm_device *dev,
1403                                          int flags, const char *name, uint32_t type);
1404 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
1405                                          const char *name);
1406 struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
1407                                                    size_t length,
1408                                                    const void *data);
1409 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
1410                                                    uint32_t id);
1411 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
1412 void drm_property_unreference_blob(struct drm_property_blob *blob);
1413 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
1414 extern int drm_property_add_enum(struct drm_property *property, int index,
1415                                  uint64_t value, const char *name);
1416 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
1417 extern int drm_mode_create_tv_properties(struct drm_device *dev,
1418                                          unsigned int num_modes,
1419                                          char *modes[]);
1420 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
1421 extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
1422 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
1423 extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
1424 extern bool drm_property_change_valid_get(struct drm_property *property,
1425                                          uint64_t value, struct drm_mode_object **ref);
1426 extern void drm_property_change_valid_put(struct drm_property *property,
1427                 struct drm_mode_object *ref);
1428
1429 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
1430                                              struct drm_encoder *encoder);
1431 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
1432                                          int gamma_size);
1433 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
1434                 uint32_t id, uint32_t type);
1435
1436 /* IOCTLs */
1437 extern int drm_mode_getresources(struct drm_device *dev,
1438                                  void *data, struct drm_file *file_priv);
1439 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
1440                                    struct drm_file *file_priv);
1441 extern int drm_mode_getcrtc(struct drm_device *dev,
1442                             void *data, struct drm_file *file_priv);
1443 extern int drm_mode_getconnector(struct drm_device *dev,
1444                               void *data, struct drm_file *file_priv);
1445 extern int drm_mode_set_config_internal(struct drm_mode_set *set);
1446 extern int drm_mode_setcrtc(struct drm_device *dev,
1447                             void *data, struct drm_file *file_priv);
1448 extern int drm_mode_getplane(struct drm_device *dev,
1449                                void *data, struct drm_file *file_priv);
1450 extern int drm_mode_setplane(struct drm_device *dev,
1451                                void *data, struct drm_file *file_priv);
1452 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
1453                                 void *data, struct drm_file *file_priv);
1454 extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
1455                                 void *data, struct drm_file *file_priv);
1456 extern int drm_mode_addfb(struct drm_device *dev,
1457                           void *data, struct drm_file *file_priv);
1458 extern int drm_mode_addfb2(struct drm_device *dev,
1459                            void *data, struct drm_file *file_priv);
1460 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
1461 extern int drm_mode_rmfb(struct drm_device *dev,
1462                          void *data, struct drm_file *file_priv);
1463 extern int drm_mode_getfb(struct drm_device *dev,
1464                           void *data, struct drm_file *file_priv);
1465 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1466                                   void *data, struct drm_file *file_priv);
1467
1468 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
1469                                       void *data, struct drm_file *file_priv);
1470 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
1471                                   void *data, struct drm_file *file_priv);
1472 extern int drm_mode_createblob_ioctl(struct drm_device *dev,
1473                                      void *data, struct drm_file *file_priv);
1474 extern int drm_mode_destroyblob_ioctl(struct drm_device *dev,
1475                                       void *data, struct drm_file *file_priv);
1476 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
1477                                               void *data, struct drm_file *file_priv);
1478 extern int drm_mode_getencoder(struct drm_device *dev,
1479                                void *data, struct drm_file *file_priv);
1480 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
1481                                     void *data, struct drm_file *file_priv);
1482 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
1483                                     void *data, struct drm_file *file_priv);
1484 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
1485 extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
1486 extern bool drm_detect_hdmi_monitor(struct edid *edid);
1487 extern bool drm_detect_monitor_audio(struct edid *edid);
1488 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
1489 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
1490                                     void *data, struct drm_file *file_priv);
1491 extern int drm_add_modes_noedid(struct drm_connector *connector,
1492                                 int hdisplay, int vdisplay);
1493 extern void drm_set_preferred_mode(struct drm_connector *connector,
1494                                    int hpref, int vpref);
1495
1496 extern int drm_edid_header_is_valid(const u8 *raw_edid);
1497 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
1498                                  bool *edid_corrupt);
1499 extern bool drm_edid_is_valid(struct edid *edid);
1500
1501 extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
1502                                                          char topology[8]);
1503 extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
1504                                                char topology[8]);
1505 extern void drm_mode_put_tile_group(struct drm_device *dev,
1506                                    struct drm_tile_group *tg);
1507 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1508                                            int hsize, int vsize, int fresh,
1509                                            bool rb);
1510
1511 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1512                                       void *data, struct drm_file *file_priv);
1513 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1514                                     void *data, struct drm_file *file_priv);
1515 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1516                                       void *data, struct drm_file *file_priv);
1517 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
1518                                              struct drm_file *file_priv);
1519 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
1520                                            struct drm_file *file_priv);
1521 extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
1522                                        struct drm_property *property,
1523                                        uint64_t value);
1524 extern int drm_mode_atomic_ioctl(struct drm_device *dev,
1525                                  void *data, struct drm_file *file_priv);
1526
1527 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1528                                  int *bpp);
1529 extern int drm_format_num_planes(uint32_t format);
1530 extern int drm_format_plane_cpp(uint32_t format, int plane);
1531 extern int drm_format_horz_chroma_subsampling(uint32_t format);
1532 extern int drm_format_vert_chroma_subsampling(uint32_t format);
1533 extern const char *drm_get_format_name(uint32_t format);
1534 extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
1535                                                               unsigned int supported_rotations);
1536 extern unsigned int drm_rotation_simplify(unsigned int rotation,
1537                                           unsigned int supported_rotations);
1538
1539 /* Helpers */
1540
1541 static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
1542                 uint32_t id)
1543 {
1544         struct drm_mode_object *mo;
1545         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
1546         return mo ? obj_to_plane(mo) : NULL;
1547 }
1548
1549 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
1550         uint32_t id)
1551 {
1552         struct drm_mode_object *mo;
1553         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC);
1554         return mo ? obj_to_crtc(mo) : NULL;
1555 }
1556
1557 static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
1558         uint32_t id)
1559 {
1560         struct drm_mode_object *mo;
1561         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
1562         return mo ? obj_to_encoder(mo) : NULL;
1563 }
1564
1565 static inline struct drm_connector *drm_connector_find(struct drm_device *dev,
1566                 uint32_t id)
1567 {
1568         struct drm_mode_object *mo;
1569         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
1570         return mo ? obj_to_connector(mo) : NULL;
1571 }
1572
1573 static inline struct drm_property *drm_property_find(struct drm_device *dev,
1574                 uint32_t id)
1575 {
1576         struct drm_mode_object *mo;
1577         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
1578         return mo ? obj_to_property(mo) : NULL;
1579 }
1580
1581 /* Plane list iterator for legacy (overlay only) planes. */
1582 #define drm_for_each_legacy_plane(plane, planelist) \
1583         list_for_each_entry(plane, planelist, head) \
1584                 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1585
1586 #endif /* __DRM_CRTC_H__ */