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 <drm/drm_mode.h>
  34
  35 #include <drm/drm_fourcc.h>
  36
  37 struct drm_device;
  38 struct drm_mode_set;
  39 struct drm_framebuffer;
  40 struct drm_object_properties;
  41 struct drm_file;
  42 struct drm_clip_rect;
  43
  44 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  45 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  46 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  47 #define DRM_MODE_OBJECT_MODE 0xdededede
  48 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  49 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  50 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  51 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  52 #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd
  53
  54 struct drm_mode_object {
  55         uint32_t id;
  56         uint32_t type;
  57         struct drm_object_properties *properties;
  58 };
  59
  60 #define DRM_OBJECT_MAX_PROPERTY 24
  61 struct drm_object_properties {
  62         int count;
  63         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  64         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  65 };
  66
  67 /*
  68  * Note on terminology:  here, for brevity and convenience, we refer to connector
  69  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
  70  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
  71  * may span multiple monitors (and therefore multiple CRTC and connector
  72  * structures).
  73  */
  74
  75 enum drm_mode_status {
  76     MODE_OK     = 0,    /* Mode OK */
  77     MODE_HSYNC,         /* hsync out of range */
  78     MODE_VSYNC,         /* vsync out of range */
  79     MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
  80     MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
  81     MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
  82     MODE_NOMODE,        /* no mode with a matching name */
  83     MODE_NO_INTERLACE,  /* interlaced mode not supported */
  84     MODE_NO_DBLESCAN,   /* doublescan mode not supported */
  85     MODE_NO_VSCAN,      /* multiscan mode not supported */
  86     MODE_MEM,           /* insufficient video memory */
  87     MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
  88     MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
  89     MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
  90     MODE_NOCLOCK,       /* no fixed clock available */
  91     MODE_CLOCK_HIGH,    /* clock required is too high */
  92     MODE_CLOCK_LOW,     /* clock required is too low */
  93     MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
  94     MODE_BAD_HVALUE,    /* horizontal timing was out of range */
  95     MODE_BAD_VVALUE,    /* vertical timing was out of range */
  96     MODE_BAD_VSCAN,     /* VScan value out of range */
  97     MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
  98     MODE_HSYNC_WIDE,    /* horizontal sync too wide */
  99     MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
 100     MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
 101     MODE_VSYNC_NARROW,  /* vertical sync too narrow */
 102     MODE_VSYNC_WIDE,    /* vertical sync too wide */
 103     MODE_VBLANK_NARROW, /* vertical blanking too narrow */
 104     MODE_VBLANK_WIDE,   /* vertical blanking too wide */
 105     MODE_PANEL,         /* exceeds panel dimensions */
 106     MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
 107     MODE_ONE_WIDTH,     /* only one width is supported */
 108     MODE_ONE_HEIGHT,    /* only one height is supported */
 109     MODE_ONE_SIZE,      /* only one resolution is supported */
 110     MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
 111     MODE_UNVERIFIED = -3, /* mode needs to reverified */
 112     MODE_BAD = -2,      /* unspecified reason */
 113     MODE_ERROR  = -1    /* error condition */
 114 };
 115
 116 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
 117                                     DRM_MODE_TYPE_CRTC_C)
 118
 119 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
 120         .name = nm, .status = 0, .type = (t), .clock = (c), \
 121         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
 122         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
 123         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
 124         .vscan = (vs), .flags = (f), \
 125         .base.type = DRM_MODE_OBJECT_MODE
 126
 127 #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
 128
 129 struct drm_display_mode {
 130         /* Header */
 131         struct list_head head;
 132         struct drm_mode_object base;
 133
 134         char name[DRM_DISPLAY_MODE_LEN];
 135
 136         enum drm_mode_status status;
 137         unsigned int type;
 138
 139         /* Proposed mode values */
 140         int clock;              /* in kHz */
 141         int hdisplay;
 142         int hsync_start;
 143         int hsync_end;
 144         int htotal;
 145         int hskew;
 146         int vdisplay;
 147         int vsync_start;
 148         int vsync_end;
 149         int vtotal;
 150         int vscan;
 151         unsigned int flags;
 152
 153         /* Addressable image size (may be 0 for projectors, etc.) */
 154         int width_mm;
 155         int height_mm;
 156
 157         /* Actual mode we give to hw */
 158         int clock_index;
 159         int synth_clock;
 160         int crtc_hdisplay;
 161         int crtc_hblank_start;
 162         int crtc_hblank_end;
 163         int crtc_hsync_start;
 164         int crtc_hsync_end;
 165         int crtc_htotal;
 166         int crtc_hskew;
 167         int crtc_vdisplay;
 168         int crtc_vblank_start;
 169         int crtc_vblank_end;
 170         int crtc_vsync_start;
 171         int crtc_vsync_end;
 172         int crtc_vtotal;
 173
 174         /* Driver private mode info */
 175         int private_size;
 176         int *private;
 177         int private_flags;
 178
 179         int vrefresh;           /* in Hz */
 180         int hsync;              /* in kHz */
 181 };
 182
 183 enum drm_connector_status {
 184         connector_status_connected = 1,
 185         connector_status_disconnected = 2,
 186         connector_status_unknown = 3,
 187 };
 188
 189 enum subpixel_order {
 190         SubPixelUnknown = 0,
 191         SubPixelHorizontalRGB,
 192         SubPixelHorizontalBGR,
 193         SubPixelVerticalRGB,
 194         SubPixelVerticalBGR,
 195         SubPixelNone,
 196 };
 197
 198 #define DRM_COLOR_FORMAT_RGB444         (1<<0)
 199 #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
 200 #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
 201 /*
 202  * Describes a given display (e.g. CRT or flat panel) and its limitations.
 203  */
 204 struct drm_display_info {
 205         char name[DRM_DISPLAY_INFO_LEN];
 206
 207         /* Physical size */
 208         unsigned int width_mm;
 209         unsigned int height_mm;
 210
 211         /* Clock limits FIXME: storage format */
 212         unsigned int min_vfreq, max_vfreq;
 213         unsigned int min_hfreq, max_hfreq;
 214         unsigned int pixel_clock;
 215         unsigned int bpc;
 216
 217         enum subpixel_order subpixel_order;
 218         u32 color_formats;
 219
 220         u8 cea_rev;
 221 };
 222
 223 struct drm_framebuffer_funcs {
 224         /* note: use drm_framebuffer_remove() */
 225         void (*destroy)(struct drm_framebuffer *framebuffer);
 226         int (*create_handle)(struct drm_framebuffer *fb,
 227                              struct drm_file *file_priv,
 228                              unsigned int *handle);
 229         /**
 230          * Optinal callback for the dirty fb ioctl.
 231          *
 232          * Userspace can notify the driver via this callback
 233          * that a area of the framebuffer has changed and should
 234          * be flushed to the display hardware.
 235          *
 236          * See documentation in drm_mode.h for the struct
 237          * drm_mode_fb_dirty_cmd for more information as all
 238          * the semantics and arguments have a one to one mapping
 239          * on this function.
 240          */
 241         int (*dirty)(struct drm_framebuffer *framebuffer,
 242                      struct drm_file *file_priv, unsigned flags,
 243                      unsigned color, struct drm_clip_rect *clips,
 244                      unsigned num_clips);
 245 };
 246
 247 struct drm_framebuffer {
 248         struct drm_device *dev;
 249         /*
 250          * Note that the fb is refcounted for the benefit of driver internals,
 251          * for example some hw, disabling a CRTC/plane is asynchronous, and
 252          * scanout does not actually complete until the next vblank.  So some
 253          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
 254          * should be deferred.  In cases like this, the driver would like to
 255          * hold a ref to the fb even though it has already been removed from
 256          * userspace perspective.
 257          */
 258         struct kref refcount;
 259         /*
 260          * Place on the dev->mode_config.fb_list, access protected by
 261          * dev->mode_config.fb_lock.
 262          */
 263         struct list_head head;
 264         struct drm_mode_object base;
 265         const struct drm_framebuffer_funcs *funcs;
 266         unsigned int pitches[4];
 267         unsigned int offsets[4];
 268         unsigned int width;
 269         unsigned int height;
 270         /* depth can be 15 or 16 */
 271         unsigned int depth;
 272         int bits_per_pixel;
 273         int flags;
 274         uint32_t pixel_format; /* fourcc format */
 275         struct list_head filp_head;
 276         /* if you are using the helper */
 277         void *helper_private;
 278 };
 279
 280 struct drm_property_blob {
 281         struct drm_mode_object base;
 282         struct list_head head;
 283         unsigned int length;
 284         unsigned char data[];
 285 };
 286
 287 struct drm_property_enum {
 288         uint64_t value;
 289         struct list_head head;
 290         char name[DRM_PROP_NAME_LEN];
 291 };
 292
 293 struct drm_property {
 294         struct list_head head;
 295         struct drm_mode_object base;
 296         uint32_t flags;
 297         char name[DRM_PROP_NAME_LEN];
 298         uint32_t num_values;
 299         uint64_t *values;
 300
 301         struct list_head enum_blob_list;
 302 };
 303
 304 struct drm_crtc;
 305 struct drm_connector;
 306 struct drm_encoder;
 307 struct drm_pending_vblank_event;
 308 struct drm_plane;
 309 struct drm_bridge;
 310
 311 /**
 312  * drm_crtc_funcs - control CRTCs for a given device
 313  * @save: save CRTC state
 314  * @restore: restore CRTC state
 315  * @reset: reset CRTC after state has been invalidated (e.g. resume)
 316  * @cursor_set: setup the cursor
 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  *
 324  * The drm_crtc_funcs structure is the central CRTC management structure
 325  * in the DRM.  Each CRTC controls one or more connectors (note that the name
 326  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
 327  * connectors, not just CRTs).
 328  *
 329  * Each driver is responsible for filling out this structure at startup time,
 330  * in addition to providing other modesetting features, like i2c and DDC
 331  * bus accessors.
 332  */
 333 struct drm_crtc_funcs {
 334         /* Save CRTC state */
 335         void (*save)(struct drm_crtc *crtc); /* suspend? */
 336         /* Restore CRTC state */
 337         void (*restore)(struct drm_crtc *crtc); /* resume? */
 338         /* Reset CRTC state */
 339         void (*reset)(struct drm_crtc *crtc);
 340
 341         /* cursor controls */
 342         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
 343                           uint32_t handle, uint32_t width, uint32_t height);
 344         int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
 345                            uint32_t handle, uint32_t width, uint32_t height,
 346                            int32_t hot_x, int32_t hot_y);
 347         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
 348
 349         /* Set gamma on the CRTC */
 350         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 351                           uint32_t start, uint32_t size);
 352         /* Object destroy routine */
 353         void (*destroy)(struct drm_crtc *crtc);
 354
 355         int (*set_config)(struct drm_mode_set *set);
 356
 357         /*
 358          * Flip to the given framebuffer.  This implements the page
 359          * flip ioctl described in drm_mode.h, specifically, the
 360          * implementation must return immediately and block all
 361          * rendering to the current fb until the flip has completed.
 362          * If userspace set the event flag in the ioctl, the event
 363          * argument will point to an event to send back when the flip
 364          * completes, otherwise it will be NULL.
 365          */
 366         int (*page_flip)(struct drm_crtc *crtc,
 367                          struct drm_framebuffer *fb,
 368                          struct drm_pending_vblank_event *event,
 369                          uint32_t flags);
 370
 371         int (*set_property)(struct drm_crtc *crtc,
 372                             struct drm_property *property, uint64_t val);
 373 };
 374
 375 /**
 376  * drm_crtc - central CRTC control structure
 377  * @dev: parent DRM device
 378  * @head: list management
 379  * @base: base KMS object for ID tracking etc.
 380  * @enabled: is this CRTC enabled?
 381  * @mode: current mode timings
 382  * @hwmode: mode timings as programmed to hw regs
 383  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
 384  *    invert the width/height of the crtc.  This is used if the driver
 385  *    is performing 90 or 270 degree rotated scanout
 386  * @x: x position on screen
 387  * @y: y position on screen
 388  * @funcs: CRTC control functions
 389  * @gamma_size: size of gamma ramp
 390  * @gamma_store: gamma ramp values
 391  * @framedur_ns: precise frame timing
 392  * @framedur_ns: precise line timing
 393  * @pixeldur_ns: precise pixel timing
 394  * @helper_private: mid-layer private data
 395  * @properties: property tracking for this CRTC
 396  *
 397  * Each CRTC may have one or more connectors associated with it.  This structure
 398  * allows the CRTC to be controlled.
 399  */
 400 struct drm_crtc {
 401         struct drm_device *dev;
 402         struct list_head head;
 403
 404         /**
 405          * crtc mutex
 406          *
 407          * This provides a read lock for the overall crtc state (mode, dpms
 408          * state, ...) and a write lock for everything which can be update
 409          * without a full modeset (fb, cursor data, ...)
 410          */
 411         struct mutex mutex;
 412
 413         struct drm_mode_object base;
 414
 415         /* framebuffer the connector is currently bound to */
 416         struct drm_framebuffer *fb;
 417
 418         /* Temporary tracking of the old fb while a modeset is ongoing. Used
 419          * by drm_mode_set_config_internal to implement correct refcounting. */
 420         struct drm_framebuffer *old_fb;
 421
 422         bool enabled;
 423
 424         /* Requested mode from modesetting. */
 425         struct drm_display_mode mode;
 426
 427         /* Programmed mode in hw, after adjustments for encoders,
 428          * crtc, panel scaling etc. Needed for timestamping etc.
 429          */
 430         struct drm_display_mode hwmode;
 431
 432         bool invert_dimensions;
 433
 434         int x, y;
 435         const struct drm_crtc_funcs *funcs;
 436
 437         /* CRTC gamma size for reporting to userspace */
 438         uint32_t gamma_size;
 439         uint16_t *gamma_store;
 440
 441         /* Constants needed for precise vblank and swap timestamping. */
 442         s64 framedur_ns, linedur_ns, pixeldur_ns;
 443
 444         /* if you are using the helper */
 445         void *helper_private;
 446
 447         struct drm_object_properties properties;
 448 };
 449
 450
 451 /**
 452  * drm_connector_funcs - control connectors on a given device
 453  * @dpms: set power state (see drm_crtc_funcs above)
 454  * @save: save connector state
 455  * @restore: restore connector state
 456  * @reset: reset connector after state has been invalidated (e.g. resume)
 457  * @detect: is this connector active?
 458  * @fill_modes: fill mode list for this connector
 459  * @set_property: property for this connector may need an update
 460  * @destroy: make object go away
 461  * @force: notify the driver that the connector is forced on
 462  *
 463  * Each CRTC may have one or more connectors attached to it.  The functions
 464  * below allow the core DRM code to control connectors, enumerate available modes,
 465  * etc.
 466  */
 467 struct drm_connector_funcs {
 468         void (*dpms)(struct drm_connector *connector, int mode);
 469         void (*save)(struct drm_connector *connector);
 470         void (*restore)(struct drm_connector *connector);
 471         void (*reset)(struct drm_connector *connector);
 472
 473         /* Check to see if anything is attached to the connector.
 474          * @force is set to false whilst polling, true when checking the
 475          * connector due to user request. @force can be used by the driver
 476          * to avoid expensive, destructive operations during automated
 477          * probing.
 478          */
 479         enum drm_connector_status (*detect)(struct drm_connector *connector,
 480                                             bool force);
 481         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
 482         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
 483                              uint64_t val);
 484         void (*destroy)(struct drm_connector *connector);
 485         void (*force)(struct drm_connector *connector);
 486 };
 487
 488 /**
 489  * drm_encoder_funcs - encoder controls
 490  * @reset: reset state (e.g. at init or resume time)
 491  * @destroy: cleanup and free associated data
 492  *
 493  * Encoders sit between CRTCs and connectors.
 494  */
 495 struct drm_encoder_funcs {
 496         void (*reset)(struct drm_encoder *encoder);
 497         void (*destroy)(struct drm_encoder *encoder);
 498 };
 499
 500 #define DRM_CONNECTOR_MAX_ENCODER 3
 501
 502 /**
 503  * drm_encoder - central DRM encoder structure
 504  * @dev: parent DRM device
 505  * @head: list management
 506  * @base: base KMS object
 507  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
 508  * @possible_crtcs: bitmask of potential CRTC bindings
 509  * @possible_clones: bitmask of potential sibling encoders for cloning
 510  * @crtc: currently bound CRTC
 511  * @bridge: bridge associated to the encoder
 512  * @funcs: control functions
 513  * @helper_private: mid-layer private data
 514  *
 515  * CRTCs drive pixels to encoders, which convert them into signals
 516  * appropriate for a given connector or set of connectors.
 517  */
 518 struct drm_encoder {
 519         struct drm_device *dev;
 520         struct list_head head;
 521
 522         struct drm_mode_object base;
 523         int encoder_type;
 524         uint32_t possible_crtcs;
 525         uint32_t possible_clones;
 526
 527         struct drm_crtc *crtc;
 528         struct drm_bridge *bridge;
 529         const struct drm_encoder_funcs *funcs;
 530         void *helper_private;
 531 };
 532
 533 enum drm_connector_force {
 534         DRM_FORCE_UNSPECIFIED,
 535         DRM_FORCE_OFF,
 536         DRM_FORCE_ON,         /* force on analog part normally */
 537         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
 538 };
 539
 540 /* should we poll this connector for connects and disconnects */
 541 /* hot plug detectable */
 542 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
 543 /* poll for connections */
 544 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
 545 /* can cleanly poll for disconnections without flickering the screen */
 546 /* DACs should rarely do this without a lot of testing */
 547 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
 548
 549 #define MAX_ELD_BYTES   128
 550
 551 /**
 552  * drm_connector - central DRM connector control structure
 553  * @dev: parent DRM device
 554  * @kdev: kernel device for sysfs attributes
 555  * @attr: sysfs attributes
 556  * @head: list management
 557  * @base: base KMS object
 558  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
 559  * @connector_type_id: index into connector type enum
 560  * @interlace_allowed: can this connector handle interlaced modes?
 561  * @doublescan_allowed: can this connector handle doublescan?
 562  * @modes: modes available on this connector (from fill_modes() + user)
 563  * @status: one of the drm_connector_status enums (connected, not, or unknown)
 564  * @probed_modes: list of modes derived directly from the display
 565  * @display_info: information about attached display (e.g. from EDID)
 566  * @funcs: connector control functions
 567  * @edid_blob_ptr: DRM property containing EDID if present
 568  * @properties: property tracking for this connector
 569  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
 570  * @dpms: current dpms state
 571  * @helper_private: mid-layer private data
 572  * @force: a %DRM_FORCE_<foo> state for forced mode sets
 573  * @encoder_ids: valid encoders for this connector
 574  * @encoder: encoder driving this connector, if any
 575  * @eld: EDID-like data, if present
 576  * @dvi_dual: dual link DVI, if found
 577  * @max_tmds_clock: max clock rate, if found
 578  * @latency_present: AV delay info from ELD, if found
 579  * @video_latency: video latency info from ELD, if found
 580  * @audio_latency: audio latency info from ELD, if found
 581  * @null_edid_counter: track sinks that give us all zeros for the EDID
 582  *
 583  * Each connector may be connected to one or more CRTCs, or may be clonable by
 584  * another connector if they can share a CRTC.  Each connector also has a specific
 585  * position in the broader display (referred to as a 'screen' though it could
 586  * span multiple monitors).
 587  */
 588 struct drm_connector {
 589         struct drm_device *dev;
 590         struct device kdev;
 591         struct device_attribute *attr;
 592         struct list_head head;
 593
 594         struct drm_mode_object base;
 595
 596         int connector_type;
 597         int connector_type_id;
 598         bool interlace_allowed;
 599         bool doublescan_allowed;
 600         struct list_head modes; /* list of modes on this connector */
 601
 602         enum drm_connector_status status;
 603
 604         /* these are modes added by probing with DDC or the BIOS */
 605         struct list_head probed_modes;
 606
 607         struct drm_display_info display_info;
 608         const struct drm_connector_funcs *funcs;
 609
 610         struct drm_property_blob *edid_blob_ptr;
 611         struct drm_object_properties properties;
 612
 613         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
 614
 615         /* requested DPMS state */
 616         int dpms;
 617
 618         void *helper_private;
 619
 620         /* forced on connector */
 621         enum drm_connector_force force;
 622         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
 623         struct drm_encoder *encoder; /* currently active encoder */
 624
 625         /* EDID bits */
 626         uint8_t eld[MAX_ELD_BYTES];
 627         bool dvi_dual;
 628         int max_tmds_clock;     /* in MHz */
 629         bool latency_present[2];
 630         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
 631         int audio_latency[2];
 632         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
 633         unsigned bad_edid_counter;
 634 };
 635
 636 /**
 637  * drm_plane_funcs - driver plane control functions
 638  * @update_plane: update the plane configuration
 639  * @disable_plane: shut down the plane
 640  * @destroy: clean up plane resources
 641  * @set_property: called when a property is changed
 642  */
 643 struct drm_plane_funcs {
 644         int (*update_plane)(struct drm_plane *plane,
 645                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
 646                             int crtc_x, int crtc_y,
 647                             unsigned int crtc_w, unsigned int crtc_h,
 648                             uint32_t src_x, uint32_t src_y,
 649                             uint32_t src_w, uint32_t src_h);
 650         int (*disable_plane)(struct drm_plane *plane);
 651         void (*destroy)(struct drm_plane *plane);
 652
 653         int (*set_property)(struct drm_plane *plane,
 654                             struct drm_property *property, uint64_t val);
 655 };
 656
 657 /**
 658  * drm_plane - central DRM plane control structure
 659  * @dev: DRM device this plane belongs to
 660  * @head: for list management
 661  * @base: base mode object
 662  * @possible_crtcs: pipes this plane can be bound to
 663  * @format_types: array of formats supported by this plane
 664  * @format_count: number of formats supported
 665  * @crtc: currently bound CRTC
 666  * @fb: currently bound fb
 667  * @funcs: helper functions
 668  * @properties: property tracking for this plane
 669  */
 670 struct drm_plane {
 671         struct drm_device *dev;
 672         struct list_head head;
 673
 674         struct drm_mode_object base;
 675
 676         uint32_t possible_crtcs;
 677         uint32_t *format_types;
 678         uint32_t format_count;
 679
 680         struct drm_crtc *crtc;
 681         struct drm_framebuffer *fb;
 682
 683         const struct drm_plane_funcs *funcs;
 684
 685         struct drm_object_properties properties;
 686 };
 687
 688 /**
 689  * drm_bridge_funcs - drm_bridge control functions
 690  * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
 691  * @disable: Called right before encoder prepare, disables the bridge
 692  * @post_disable: Called right after encoder prepare, for lockstepped disable
 693  * @mode_set: Set this mode to the bridge
 694  * @pre_enable: Called right before encoder commit, for lockstepped commit
 695  * @enable: Called right after encoder commit, enables the bridge
 696  * @destroy: make object go away
 697  */
 698 struct drm_bridge_funcs {
 699         bool (*mode_fixup)(struct drm_bridge *bridge,
 700                            const struct drm_display_mode *mode,
 701                            struct drm_display_mode *adjusted_mode);
 702         void (*disable)(struct drm_bridge *bridge);
 703         void (*post_disable)(struct drm_bridge *bridge);
 704         void (*mode_set)(struct drm_bridge *bridge,
 705                          struct drm_display_mode *mode,
 706                          struct drm_display_mode *adjusted_mode);
 707         void (*pre_enable)(struct drm_bridge *bridge);
 708         void (*enable)(struct drm_bridge *bridge);
 709         void (*destroy)(struct drm_bridge *bridge);
 710 };
 711
 712 /**
 713  * drm_bridge - central DRM bridge control structure
 714  * @dev: DRM device this bridge belongs to
 715  * @head: list management
 716  * @base: base mode object
 717  * @funcs: control functions
 718  * @driver_private: pointer to the bridge driver's internal context
 719  */
 720 struct drm_bridge {
 721         struct drm_device *dev;
 722         struct list_head head;
 723
 724         struct drm_mode_object base;
 725
 726         const struct drm_bridge_funcs *funcs;
 727         void *driver_private;
 728 };
 729
 730 /**
 731  * drm_mode_set - new values for a CRTC config change
 732  * @head: list management
 733  * @fb: framebuffer to use for new config
 734  * @crtc: CRTC whose configuration we're about to change
 735  * @mode: mode timings to use
 736  * @x: position of this CRTC relative to @fb
 737  * @y: position of this CRTC relative to @fb
 738  * @connectors: array of connectors to drive with this CRTC if possible
 739  * @num_connectors: size of @connectors array
 740  *
 741  * Represents a single crtc the connectors that it drives with what mode
 742  * and from which framebuffer it scans out from.
 743  *
 744  * This is used to set modes.
 745  */
 746 struct drm_mode_set {
 747         struct drm_framebuffer *fb;
 748         struct drm_crtc *crtc;
 749         struct drm_display_mode *mode;
 750
 751         uint32_t x;
 752         uint32_t y;
 753
 754         struct drm_connector **connectors;
 755         size_t num_connectors;
 756 };
 757
 758 /**
 759  * struct drm_mode_config_funcs - basic driver provided mode setting functions
 760  * @fb_create: create a new framebuffer object
 761  * @output_poll_changed: function to handle output configuration changes
 762  *
 763  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
 764  * involve drivers.
 765  */
 766 struct drm_mode_config_funcs {
 767         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
 768                                              struct drm_file *file_priv,
 769                                              struct drm_mode_fb_cmd2 *mode_cmd);
 770         void (*output_poll_changed)(struct drm_device *dev);
 771 };
 772
 773 /**
 774  * drm_mode_group - group of mode setting resources for potential sub-grouping
 775  * @num_crtcs: CRTC count
 776  * @num_encoders: encoder count
 777  * @num_connectors: connector count
 778  * @id_list: list of KMS object IDs in this group
 779  *
 780  * Currently this simply tracks the global mode setting state.  But in the
 781  * future it could allow groups of objects to be set aside into independent
 782  * control groups for use by different user level processes (e.g. two X servers
 783  * running simultaneously on different heads, each with their own mode
 784  * configuration and freedom of mode setting).
 785  */
 786 struct drm_mode_group {
 787         uint32_t num_crtcs;
 788         uint32_t num_encoders;
 789         uint32_t num_connectors;
 790         uint32_t num_bridges;
 791
 792         /* list of object IDs for this group */
 793         uint32_t *id_list;
 794 };
 795
 796 /**
 797  * drm_mode_config - Mode configuration control structure
 798  * @mutex: mutex protecting KMS related lists and structures
 799  * @idr_mutex: mutex for KMS ID allocation and management
 800  * @crtc_idr: main KMS ID tracking object
 801  * @num_fb: number of fbs available
 802  * @fb_list: list of framebuffers available
 803  * @num_connector: number of connectors on this device
 804  * @connector_list: list of connector objects
 805  * @num_bridge: number of bridges on this device
 806  * @bridge_list: list of bridge objects
 807  * @num_encoder: number of encoders on this device
 808  * @encoder_list: list of encoder objects
 809  * @num_crtc: number of CRTCs on this device
 810  * @crtc_list: list of CRTC objects
 811  * @min_width: minimum pixel width on this device
 812  * @min_height: minimum pixel height on this device
 813  * @max_width: maximum pixel width on this device
 814  * @max_height: maximum pixel height on this device
 815  * @funcs: core driver provided mode setting functions
 816  * @fb_base: base address of the framebuffer
 817  * @poll_enabled: track polling status for this device
 818  * @output_poll_work: delayed work for polling in process context
 819  * @*_property: core property tracking
 820  *
 821  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
 822  * enumerated by the driver are added here, as are global properties.  Some
 823  * global restrictions are also here, e.g. dimension restrictions.
 824  */
 825 struct drm_mode_config {
 826         struct mutex mutex; /* protects configuration (mode lists etc.) */
 827         struct mutex idr_mutex; /* for IDR management */
 828         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
 829         /* this is limited to one for now */
 830
 831
 832         /**
 833          * fb_lock - mutex to protect fb state
 834          *
 835          * Besides the global fb list his also protects the fbs list in the
 836          * file_priv
 837          */
 838         struct mutex fb_lock;
 839         int num_fb;
 840         struct list_head fb_list;
 841
 842         int num_connector;
 843         struct list_head connector_list;
 844         int num_bridge;
 845         struct list_head bridge_list;
 846         int num_encoder;
 847         struct list_head encoder_list;
 848         int num_plane;
 849         struct list_head plane_list;
 850
 851         int num_crtc;
 852         struct list_head crtc_list;
 853
 854         struct list_head property_list;
 855
 856         int min_width, min_height;
 857         int max_width, max_height;
 858         const struct drm_mode_config_funcs *funcs;
 859         resource_size_t fb_base;
 860
 861         /* output poll support */
 862         bool poll_enabled;
 863         bool poll_running;
 864         struct delayed_work output_poll_work;
 865
 866         /* pointers to standard properties */
 867         struct list_head property_blob_list;
 868         struct drm_property *edid_property;
 869         struct drm_property *dpms_property;
 870
 871         /* DVI-I properties */
 872         struct drm_property *dvi_i_subconnector_property;
 873         struct drm_property *dvi_i_select_subconnector_property;
 874
 875         /* TV properties */
 876         struct drm_property *tv_subconnector_property;
 877         struct drm_property *tv_select_subconnector_property;
 878         struct drm_property *tv_mode_property;
 879         struct drm_property *tv_left_margin_property;
 880         struct drm_property *tv_right_margin_property;
 881         struct drm_property *tv_top_margin_property;
 882         struct drm_property *tv_bottom_margin_property;
 883         struct drm_property *tv_brightness_property;
 884         struct drm_property *tv_contrast_property;
 885         struct drm_property *tv_flicker_reduction_property;
 886         struct drm_property *tv_overscan_property;
 887         struct drm_property *tv_saturation_property;
 888         struct drm_property *tv_hue_property;
 889
 890         /* Optional properties */
 891         struct drm_property *scaling_mode_property;
 892         struct drm_property *dirty_info_property;
 893
 894         /* dumb ioctl parameters */
 895         uint32_t preferred_depth, prefer_shadow;
 896
 897         /* whether async page flip is supported or not */
 898         bool async_page_flip;
 899 };
 900
 901 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
 902 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
 903 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
 904 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
 905 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
 906 #define obj_to_property(x) container_of(x, struct drm_property, base)
 907 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
 908 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
 909
 910 struct drm_prop_enum_list {
 911         int type;
 912         char *name;
 913 };
 914
 915 extern void drm_modeset_lock_all(struct drm_device *dev);
 916 extern void drm_modeset_unlock_all(struct drm_device *dev);
 917 extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
 918
 919 extern int drm_crtc_init(struct drm_device *dev,
 920                          struct drm_crtc *crtc,
 921                          const struct drm_crtc_funcs *funcs);
 922 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
 923
 924 extern void drm_connector_ida_init(void);
 925 extern void drm_connector_ida_destroy(void);
 926 extern int drm_connector_init(struct drm_device *dev,
 927                               struct drm_connector *connector,
 928                               const struct drm_connector_funcs *funcs,
 929                               int connector_type);
 930
 931 extern void drm_connector_cleanup(struct drm_connector *connector);
 932 /* helper to unplug all connectors from sysfs for device */
 933 extern void drm_connector_unplug_all(struct drm_device *dev);
 934
 935 extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
 936                            const struct drm_bridge_funcs *funcs);
 937 extern void drm_bridge_cleanup(struct drm_bridge *bridge);
 938
 939 extern int drm_encoder_init(struct drm_device *dev,
 940                             struct drm_encoder *encoder,
 941                             const struct drm_encoder_funcs *funcs,
 942                             int encoder_type);
 943
 944 extern int drm_plane_init(struct drm_device *dev,
 945                           struct drm_plane *plane,
 946                           unsigned long possible_crtcs,
 947                           const struct drm_plane_funcs *funcs,
 948                           const uint32_t *formats, uint32_t format_count,
 949                           bool priv);
 950 extern void drm_plane_cleanup(struct drm_plane *plane);
 951 extern void drm_plane_force_disable(struct drm_plane *plane);
 952
 953 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
 954
 955 extern const char *drm_get_connector_name(const struct drm_connector *connector);
 956 extern const char *drm_get_connector_status_name(enum drm_connector_status status);
 957 extern const char *drm_get_dpms_name(int val);
 958 extern const char *drm_get_dvi_i_subconnector_name(int val);
 959 extern const char *drm_get_dvi_i_select_name(int val);
 960 extern const char *drm_get_tv_subconnector_name(int val);
 961 extern const char *drm_get_tv_select_name(int val);
 962 extern void drm_fb_release(struct drm_file *file_priv);
 963 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
 964 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
 965 extern struct edid *drm_get_edid(struct drm_connector *connector,
 966                                  struct i2c_adapter *adapter);
 967 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
 968 extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
 969 extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);
 970 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
 971                                                    const struct drm_display_mode *mode);
 972 extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
 973 extern void drm_mode_config_init(struct drm_device *dev);
 974 extern void drm_mode_config_reset(struct drm_device *dev);
 975 extern void drm_mode_config_cleanup(struct drm_device *dev);
 976 extern void drm_mode_set_name(struct drm_display_mode *mode);
 977 extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
 978 extern bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
 979 extern int drm_mode_width(const struct drm_display_mode *mode);
 980 extern int drm_mode_height(const struct drm_display_mode *mode);
 981
 982 /* for us by fb module */
 983 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
 984 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
 985 extern void drm_mode_validate_size(struct drm_device *dev,
 986                                    struct list_head *mode_list,
 987                                    int maxX, int maxY, int maxPitch);
 988 extern void drm_mode_prune_invalid(struct drm_device *dev,
 989                                    struct list_head *mode_list, bool verbose);
 990 extern void drm_mode_sort(struct list_head *mode_list);
 991 extern int drm_mode_hsync(const struct drm_display_mode *mode);
 992 extern int drm_mode_vrefresh(const struct drm_display_mode *mode);
 993 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
 994                                   int adjust_flags);
 995 extern void drm_mode_connector_list_update(struct drm_connector *connector);
 996 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
 997                                                 struct edid *edid);
 998 extern int drm_object_property_set_value(struct drm_mode_object *obj,
 999                                          struct drm_property *property,
1000                                          uint64_t val);
1001 extern int drm_object_property_get_value(struct drm_mode_object *obj,
1002                                          struct drm_property *property,
1003                                          uint64_t *value);
1004 extern int drm_framebuffer_init(struct drm_device *dev,
1005                                 struct drm_framebuffer *fb,
1006                                 const struct drm_framebuffer_funcs *funcs);
1007 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
1008                                                       uint32_t id);
1009 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
1010 extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
1011 extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
1012 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
1013 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
1014
1015 extern void drm_object_attach_property(struct drm_mode_object *obj,
1016                                        struct drm_property *property,
1017                                        uint64_t init_val);
1018 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1019                                                 const char *name, int num_values);
1020 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
1021                                          const char *name,
1022                                          const struct drm_prop_enum_list *props,
1023                                          int num_values);
1024 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
1025                                          int flags, const char *name,
1026                                          const struct drm_prop_enum_list *props,
1027                                          int num_values);
1028 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
1029                                          const char *name,
1030                                          uint64_t min, uint64_t max);
1031 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
1032 extern int drm_property_add_enum(struct drm_property *property, int index,
1033                                  uint64_t value, const char *name);
1034 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
1035 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
1036                                      char *formats[]);
1037 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
1038 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
1039 extern const char *drm_get_encoder_name(const struct drm_encoder *encoder);
1040
1041 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
1042                                              struct drm_encoder *encoder);
1043 extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
1044                                            struct drm_encoder *encoder);
1045 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
1046                                          int gamma_size);
1047 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
1048                 uint32_t id, uint32_t type);
1049 /* IOCTLs */
1050 extern int drm_mode_getresources(struct drm_device *dev,
1051                                  void *data, struct drm_file *file_priv);
1052 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
1053                                    struct drm_file *file_priv);
1054 extern int drm_mode_getcrtc(struct drm_device *dev,
1055                             void *data, struct drm_file *file_priv);
1056 extern int drm_mode_getconnector(struct drm_device *dev,
1057                               void *data, struct drm_file *file_priv);
1058 extern int drm_mode_set_config_internal(struct drm_mode_set *set);
1059 extern int drm_mode_setcrtc(struct drm_device *dev,
1060                             void *data, struct drm_file *file_priv);
1061 extern int drm_mode_getplane(struct drm_device *dev,
1062                                void *data, struct drm_file *file_priv);
1063 extern int drm_mode_setplane(struct drm_device *dev,
1064                                void *data, struct drm_file *file_priv);
1065 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
1066                                 void *data, struct drm_file *file_priv);
1067 extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
1068                                 void *data, struct drm_file *file_priv);
1069 extern int drm_mode_addfb(struct drm_device *dev,
1070                           void *data, struct drm_file *file_priv);
1071 extern int drm_mode_addfb2(struct drm_device *dev,
1072                            void *data, struct drm_file *file_priv);
1073 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
1074 extern int drm_mode_rmfb(struct drm_device *dev,
1075                          void *data, struct drm_file *file_priv);
1076 extern int drm_mode_getfb(struct drm_device *dev,
1077                           void *data, struct drm_file *file_priv);
1078 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1079                                   void *data, struct drm_file *file_priv);
1080
1081 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
1082                                       void *data, struct drm_file *file_priv);
1083 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
1084                                   void *data, struct drm_file *file_priv);
1085 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
1086                                               void *data, struct drm_file *file_priv);
1087 extern int drm_mode_getencoder(struct drm_device *dev,
1088                                void *data, struct drm_file *file_priv);
1089 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
1090                                     void *data, struct drm_file *file_priv);
1091 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
1092                                     void *data, struct drm_file *file_priv);
1093 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
1094 extern bool drm_detect_hdmi_monitor(struct edid *edid);
1095 extern bool drm_detect_monitor_audio(struct edid *edid);
1096 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
1097 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
1098                                     void *data, struct drm_file *file_priv);
1099 extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
1100                                 int hdisplay, int vdisplay, int vrefresh,
1101                                 bool reduced, bool interlaced, bool margins);
1102 extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
1103                                 int hdisplay, int vdisplay, int vrefresh,
1104                                 bool interlaced, int margins);
1105 extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
1106                                 int hdisplay, int vdisplay, int vrefresh,
1107                                 bool interlaced, int margins, int GTF_M,
1108                                 int GTF_2C, int GTF_K, int GTF_2J);
1109 extern int drm_add_modes_noedid(struct drm_connector *connector,
1110                                 int hdisplay, int vdisplay);
1111
1112 extern int drm_edid_header_is_valid(const u8 *raw_edid);
1113 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
1114 extern bool drm_edid_is_valid(struct edid *edid);
1115 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1116                                            int hsize, int vsize, int fresh,
1117                                            bool rb);
1118
1119 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1120                                       void *data, struct drm_file *file_priv);
1121 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1122                                     void *data, struct drm_file *file_priv);
1123 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1124                                       void *data, struct drm_file *file_priv);
1125 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
1126                                              struct drm_file *file_priv);
1127 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
1128                                            struct drm_file *file_priv);
1129
1130 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1131                                  int *bpp);
1132 extern int drm_format_num_planes(uint32_t format);
1133 extern int drm_format_plane_cpp(uint32_t format, int plane);
1134 extern int drm_format_horz_chroma_subsampling(uint32_t format);
1135 extern int drm_format_vert_chroma_subsampling(uint32_t format);
1136 extern const char *drm_get_format_name(uint32_t format);
1137
1138 #endif /* __DRM_CRTC_H__ */