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