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
  34 #include <drm/drm_fourcc.h>
  35
  36 struct drm_device;
  37 struct drm_mode_set;
  38 struct drm_framebuffer;
  39
  40
  41 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  42 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  43 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  44 #define DRM_MODE_OBJECT_MODE 0xdededede
  45 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  46 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  47 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  48 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  49
  50 struct drm_mode_object {
  51         uint32_t id;
  52         uint32_t type;
  53 };
  54
  55 /*
  56  * Note on terminology:  here, for brevity and convenience, we refer to connector
  57  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
  58  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
  59  * may span multiple monitors (and therefore multiple CRTC and connector
  60  * structures).
  61  */
  62
  63 enum drm_mode_status {
  64     MODE_OK     = 0,    /* Mode OK */
  65     MODE_HSYNC,         /* hsync out of range */
  66     MODE_VSYNC,         /* vsync out of range */
  67     MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
  68     MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
  69     MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
  70     MODE_NOMODE,        /* no mode with a matching name */
  71     MODE_NO_INTERLACE,  /* interlaced mode not supported */
  72     MODE_NO_DBLESCAN,   /* doublescan mode not supported */
  73     MODE_NO_VSCAN,      /* multiscan mode not supported */
  74     MODE_MEM,           /* insufficient video memory */
  75     MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
  76     MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
  77     MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
  78     MODE_NOCLOCK,       /* no fixed clock available */
  79     MODE_CLOCK_HIGH,    /* clock required is too high */
  80     MODE_CLOCK_LOW,     /* clock required is too low */
  81     MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
  82     MODE_BAD_HVALUE,    /* horizontal timing was out of range */
  83     MODE_BAD_VVALUE,    /* vertical timing was out of range */
  84     MODE_BAD_VSCAN,     /* VScan value out of range */
  85     MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
  86     MODE_HSYNC_WIDE,    /* horizontal sync too wide */
  87     MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
  88     MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
  89     MODE_VSYNC_NARROW,  /* vertical sync too narrow */
  90     MODE_VSYNC_WIDE,    /* vertical sync too wide */
  91     MODE_VBLANK_NARROW, /* vertical blanking too narrow */
  92     MODE_VBLANK_WIDE,   /* vertical blanking too wide */
  93     MODE_PANEL,         /* exceeds panel dimensions */
  94     MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
  95     MODE_ONE_WIDTH,     /* only one width is supported */
  96     MODE_ONE_HEIGHT,    /* only one height is supported */
  97     MODE_ONE_SIZE,      /* only one resolution is supported */
  98     MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
  99     MODE_UNVERIFIED = -3, /* mode needs to reverified */
 100     MODE_BAD = -2,      /* unspecified reason */
 101     MODE_ERROR  = -1    /* error condition */
 102 };
 103
 104 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
 105                                     DRM_MODE_TYPE_CRTC_C)
 106
 107 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
 108         .name = nm, .status = 0, .type = (t), .clock = (c), \
 109         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
 110         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
 111         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
 112         .vscan = (vs), .flags = (f), .vrefresh = 0
 113
 114 #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
 115
 116 struct drm_display_mode {
 117         /* Header */
 118         struct list_head head;
 119         struct drm_mode_object base;
 120
 121         char name[DRM_DISPLAY_MODE_LEN];
 122
 123         enum drm_mode_status status;
 124         int type;
 125
 126         /* Proposed mode values */
 127         int clock;              /* in kHz */
 128         int hdisplay;
 129         int hsync_start;
 130         int hsync_end;
 131         int htotal;
 132         int hskew;
 133         int vdisplay;
 134         int vsync_start;
 135         int vsync_end;
 136         int vtotal;
 137         int vscan;
 138         unsigned int flags;
 139
 140         /* Addressable image size (may be 0 for projectors, etc.) */
 141         int width_mm;
 142         int height_mm;
 143
 144         /* Actual mode we give to hw */
 145         int clock_index;
 146         int synth_clock;
 147         int crtc_hdisplay;
 148         int crtc_hblank_start;
 149         int crtc_hblank_end;
 150         int crtc_hsync_start;
 151         int crtc_hsync_end;
 152         int crtc_htotal;
 153         int crtc_hskew;
 154         int crtc_vdisplay;
 155         int crtc_vblank_start;
 156         int crtc_vblank_end;
 157         int crtc_vsync_start;
 158         int crtc_vsync_end;
 159         int crtc_vtotal;
 160         int crtc_hadjusted;
 161         int crtc_vadjusted;
 162
 163         /* Driver private mode info */
 164         int private_size;
 165         int *private;
 166         int private_flags;
 167
 168         int vrefresh;           /* in Hz */
 169         int hsync;              /* in kHz */
 170 };
 171
 172 enum drm_connector_status {
 173         connector_status_connected = 1,
 174         connector_status_disconnected = 2,
 175         connector_status_unknown = 3,
 176 };
 177
 178 enum subpixel_order {
 179         SubPixelUnknown = 0,
 180         SubPixelHorizontalRGB,
 181         SubPixelHorizontalBGR,
 182         SubPixelVerticalRGB,
 183         SubPixelVerticalBGR,
 184         SubPixelNone,
 185 };
 186
 187 #define DRM_COLOR_FORMAT_RGB444         (1<<0)
 188 #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
 189 #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
 190 /*
 191  * Describes a given display (e.g. CRT or flat panel) and its limitations.
 192  */
 193 struct drm_display_info {
 194         char name[DRM_DISPLAY_INFO_LEN];
 195
 196         /* Physical size */
 197         unsigned int width_mm;
 198         unsigned int height_mm;
 199
 200         /* Clock limits FIXME: storage format */
 201         unsigned int min_vfreq, max_vfreq;
 202         unsigned int min_hfreq, max_hfreq;
 203         unsigned int pixel_clock;
 204         unsigned int bpc;
 205
 206         enum subpixel_order subpixel_order;
 207         u32 color_formats;
 208
 209         u8 cea_rev;
 210
 211         char *raw_edid; /* if any */
 212 };
 213
 214 struct drm_framebuffer_funcs {
 215         void (*destroy)(struct drm_framebuffer *framebuffer);
 216         int (*create_handle)(struct drm_framebuffer *fb,
 217                              struct drm_file *file_priv,
 218                              unsigned int *handle);
 219         /**
 220          * Optinal callback for the dirty fb ioctl.
 221          *
 222          * Userspace can notify the driver via this callback
 223          * that a area of the framebuffer has changed and should
 224          * be flushed to the display hardware.
 225          *
 226          * See documentation in drm_mode.h for the struct
 227          * drm_mode_fb_dirty_cmd for more information as all
 228          * the semantics and arguments have a one to one mapping
 229          * on this function.
 230          */
 231         int (*dirty)(struct drm_framebuffer *framebuffer,
 232                      struct drm_file *file_priv, unsigned flags,
 233                      unsigned color, struct drm_clip_rect *clips,
 234                      unsigned num_clips);
 235 };
 236
 237 struct drm_framebuffer {
 238         struct drm_device *dev;
 239         struct list_head head;
 240         struct drm_mode_object base;
 241         const struct drm_framebuffer_funcs *funcs;
 242         unsigned int pitches[4];
 243         unsigned int offsets[4];
 244         unsigned int width;
 245         unsigned int height;
 246         /* depth can be 15 or 16 */
 247         unsigned int depth;
 248         int bits_per_pixel;
 249         int flags;
 250         uint32_t pixel_format; /* fourcc format */
 251         struct list_head filp_head;
 252         /* if you are using the helper */
 253         void *helper_private;
 254 };
 255
 256 struct drm_property_blob {
 257         struct drm_mode_object base;
 258         struct list_head head;
 259         unsigned int length;
 260         void *data;
 261 };
 262
 263 struct drm_property_enum {
 264         uint64_t value;
 265         struct list_head head;
 266         char name[DRM_PROP_NAME_LEN];
 267 };
 268
 269 struct drm_property {
 270         struct list_head head;
 271         struct drm_mode_object base;
 272         uint32_t flags;
 273         char name[DRM_PROP_NAME_LEN];
 274         uint32_t num_values;
 275         uint64_t *values;
 276
 277         struct list_head enum_blob_list;
 278 };
 279
 280 struct drm_crtc;
 281 struct drm_connector;
 282 struct drm_encoder;
 283 struct drm_pending_vblank_event;
 284 struct drm_plane;
 285
 286 /**
 287  * drm_crtc_funcs - control CRTCs for a given device
 288  * @reset: reset CRTC after state has been invalidate (e.g. resume)
 289  * @dpms: control display power levels
 290  * @save: save CRTC state
 291  * @resore: restore CRTC state
 292  * @lock: lock the CRTC
 293  * @unlock: unlock the CRTC
 294  * @shadow_allocate: allocate shadow pixmap
 295  * @shadow_create: create shadow pixmap for rotation support
 296  * @shadow_destroy: free shadow pixmap
 297  * @mode_fixup: fixup proposed mode
 298  * @mode_set: set the desired mode on the CRTC
 299  * @gamma_set: specify color ramp for CRTC
 300  * @destroy: deinit and free object.
 301  *
 302  * The drm_crtc_funcs structure is the central CRTC management structure
 303  * in the DRM.  Each CRTC controls one or more connectors (note that the name
 304  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
 305  * connectors, not just CRTs).
 306  *
 307  * Each driver is responsible for filling out this structure at startup time,
 308  * in addition to providing other modesetting features, like i2c and DDC
 309  * bus accessors.
 310  */
 311 struct drm_crtc_funcs {
 312         /* Save CRTC state */
 313         void (*save)(struct drm_crtc *crtc); /* suspend? */
 314         /* Restore CRTC state */
 315         void (*restore)(struct drm_crtc *crtc); /* resume? */
 316         /* Reset CRTC state */
 317         void (*reset)(struct drm_crtc *crtc);
 318
 319         /* cursor controls */
 320         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
 321                           uint32_t handle, uint32_t width, uint32_t height);
 322         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
 323
 324         /* Set gamma on the CRTC */
 325         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 326                           uint32_t start, uint32_t size);
 327         /* Object destroy routine */
 328         void (*destroy)(struct drm_crtc *crtc);
 329
 330         int (*set_config)(struct drm_mode_set *set);
 331
 332         /*
 333          * Flip to the given framebuffer.  This implements the page
 334          * flip ioctl described in drm_mode.h, specifically, the
 335          * implementation must return immediately and block all
 336          * rendering to the current fb until the flip has completed.
 337          * If userspace set the event flag in the ioctl, the event
 338          * argument will point to an event to send back when the flip
 339          * completes, otherwise it will be NULL.
 340          */
 341         int (*page_flip)(struct drm_crtc *crtc,
 342                          struct drm_framebuffer *fb,
 343                          struct drm_pending_vblank_event *event);
 344 };
 345
 346 /**
 347  * drm_crtc - central CRTC control structure
 348  * @dev: parent DRM device
 349  * @head: list management
 350  * @base: base KMS object for ID tracking etc.
 351  * @enabled: is this CRTC enabled?
 352  * @mode: current mode timings
 353  * @hwmode: mode timings as programmed to hw regs
 354  * @x: x position on screen
 355  * @y: y position on screen
 356  * @funcs: CRTC control functions
 357  * @gamma_size: size of gamma ramp
 358  * @gamma_store: gamma ramp values
 359  * @framedur_ns: precise frame timing
 360  * @framedur_ns: precise line timing
 361  * @pixeldur_ns: precise pixel timing
 362  * @helper_private: mid-layer private data
 363  *
 364  * Each CRTC may have one or more connectors associated with it.  This structure
 365  * allows the CRTC to be controlled.
 366  */
 367 struct drm_crtc {
 368         struct drm_device *dev;
 369         struct list_head head;
 370
 371         struct drm_mode_object base;
 372
 373         /* framebuffer the connector is currently bound to */
 374         struct drm_framebuffer *fb;
 375
 376         bool enabled;
 377
 378         /* Requested mode from modesetting. */
 379         struct drm_display_mode mode;
 380
 381         /* Programmed mode in hw, after adjustments for encoders,
 382          * crtc, panel scaling etc. Needed for timestamping etc.
 383          */
 384         struct drm_display_mode hwmode;
 385
 386         int x, y;
 387         const struct drm_crtc_funcs *funcs;
 388
 389         /* CRTC gamma size for reporting to userspace */
 390         uint32_t gamma_size;
 391         uint16_t *gamma_store;
 392
 393         /* Constants needed for precise vblank and swap timestamping. */
 394         s64 framedur_ns, linedur_ns, pixeldur_ns;
 395
 396         /* if you are using the helper */
 397         void *helper_private;
 398 };
 399
 400
 401 /**
 402  * drm_connector_funcs - control connectors on a given device
 403  * @dpms: set power state (see drm_crtc_funcs above)
 404  * @save: save connector state
 405  * @restore: restore connector state
 406  * @reset: reset connector after state has been invalidate (e.g. resume)
 407  * @mode_valid: is this mode valid on the given connector?
 408  * @mode_fixup: try to fixup proposed mode for this connector
 409  * @mode_set: set this mode
 410  * @detect: is this connector active?
 411  * @get_modes: get mode list for this connector
 412  * @set_property: property for this connector may need update
 413  * @destroy: make object go away
 414  * @force: notify the driver the connector is forced on
 415  *
 416  * Each CRTC may have one or more connectors attached to it.  The functions
 417  * below allow the core DRM code to control connectors, enumerate available modes,
 418  * etc.
 419  */
 420 struct drm_connector_funcs {
 421         void (*dpms)(struct drm_connector *connector, int mode);
 422         void (*save)(struct drm_connector *connector);
 423         void (*restore)(struct drm_connector *connector);
 424         void (*reset)(struct drm_connector *connector);
 425
 426         /* Check to see if anything is attached to the connector.
 427          * @force is set to false whilst polling, true when checking the
 428          * connector due to user request. @force can be used by the driver
 429          * to avoid expensive, destructive operations during automated
 430          * probing.
 431          */
 432         enum drm_connector_status (*detect)(struct drm_connector *connector,
 433                                             bool force);
 434         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
 435         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
 436                              uint64_t val);
 437         void (*destroy)(struct drm_connector *connector);
 438         void (*force)(struct drm_connector *connector);
 439 };
 440
 441 /**
 442  * drm_encoder_funcs - encoder controls
 443  * @reset: reset state (e.g. at init or resume time)
 444  * @destroy: cleanup and free associated data
 445  *
 446  * Encoders sit between CRTCs and connectors.
 447  */
 448 struct drm_encoder_funcs {
 449         void (*reset)(struct drm_encoder *encoder);
 450         void (*destroy)(struct drm_encoder *encoder);
 451 };
 452
 453 #define DRM_CONNECTOR_MAX_UMODES 16
 454 #define DRM_CONNECTOR_MAX_PROPERTY 16
 455 #define DRM_CONNECTOR_LEN 32
 456 #define DRM_CONNECTOR_MAX_ENCODER 3
 457
 458 /**
 459  * drm_encoder - central DRM encoder structure
 460  * @dev: parent DRM device
 461  * @head: list management
 462  * @base: base KMS object
 463  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
 464  * @possible_crtcs: bitmask of potential CRTC bindings
 465  * @possible_clones: bitmask of potential sibling encoders for cloning
 466  * @crtc: currently bound CRTC
 467  * @funcs: control functions
 468  * @helper_private: mid-layer private data
 469  *
 470  * CRTCs drive pixels to encoders, which convert them into signals
 471  * appropriate for a given connector or set of connectors.
 472  */
 473 struct drm_encoder {
 474         struct drm_device *dev;
 475         struct list_head head;
 476
 477         struct drm_mode_object base;
 478         int encoder_type;
 479         uint32_t possible_crtcs;
 480         uint32_t possible_clones;
 481
 482         struct drm_crtc *crtc;
 483         const struct drm_encoder_funcs *funcs;
 484         void *helper_private;
 485 };
 486
 487 enum drm_connector_force {
 488         DRM_FORCE_UNSPECIFIED,
 489         DRM_FORCE_OFF,
 490         DRM_FORCE_ON,         /* force on analog part normally */
 491         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
 492 };
 493
 494 /* should we poll this connector for connects and disconnects */
 495 /* hot plug detectable */
 496 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
 497 /* poll for connections */
 498 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
 499 /* can cleanly poll for disconnections without flickering the screen */
 500 /* DACs should rarely do this without a lot of testing */
 501 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
 502
 503 #define MAX_ELD_BYTES   128
 504
 505 /**
 506  * drm_connector - central DRM connector control structure
 507  * @dev: parent DRM device
 508  * @kdev: kernel device for sysfs attributes
 509  * @attr: sysfs attributes
 510  * @head: list management
 511  * @base: base KMS object
 512  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
 513  * @connector_type_id: index into connector type enum
 514  * @interlace_allowed: can this connector handle interlaced modes?
 515  * @doublescan_allowed: can this connector handle doublescan?
 516  * @modes: modes available on this connector (from fill_modes() + user)
 517  * @status: one of the drm_connector_status enums (connected, not, or unknown)
 518  * @probed_modes: list of modes derived directly from the display
 519  * @display_info: information about attached display (e.g. from EDID)
 520  * @funcs: connector control functions
 521  * @user_modes: user added mode list
 522  * @edid_blob_ptr: DRM property containing EDID if present
 523  * @property_ids: property tracking for this connector
 524  * @property_values: value pointers or data for properties
 525  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
 526  * @dpms: current dpms state
 527  * @helper_private: mid-layer private data
 528  * @force: a %DRM_FORCE_<foo> state for forced mode sets
 529  * @encoder_ids: valid encoders for this connector
 530  * @encoder: encoder driving this connector, if any
 531  * @eld: EDID-like data, if present
 532  * @dvi_dual: dual link DVI, if found
 533  * @max_tmds_clock: max clock rate, if found
 534  * @latency_present: AV delay info from ELD, if found
 535  * @video_latency: video latency info from ELD, if found
 536  * @audio_latency: audio latency info from ELD, if found
 537  * @null_edid_counter: track sinks that give us all zeros for the EDID
 538  *
 539  * Each connector may be connected to one or more CRTCs, or may be clonable by
 540  * another connector if they can share a CRTC.  Each connector also has a specific
 541  * position in the broader display (referred to as a 'screen' though it could
 542  * span multiple monitors).
 543  */
 544 struct drm_connector {
 545         struct drm_device *dev;
 546         struct device kdev;
 547         struct device_attribute *attr;
 548         struct list_head head;
 549
 550         struct drm_mode_object base;
 551
 552         int connector_type;
 553         int connector_type_id;
 554         bool interlace_allowed;
 555         bool doublescan_allowed;
 556         struct list_head modes; /* list of modes on this connector */
 557
 558         enum drm_connector_status status;
 559
 560         /* these are modes added by probing with DDC or the BIOS */
 561         struct list_head probed_modes;
 562
 563         struct drm_display_info display_info;
 564         const struct drm_connector_funcs *funcs;
 565
 566         struct list_head user_modes;
 567         struct drm_property_blob *edid_blob_ptr;
 568         u32 property_ids[DRM_CONNECTOR_MAX_PROPERTY];
 569         uint64_t property_values[DRM_CONNECTOR_MAX_PROPERTY];
 570
 571         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
 572
 573         /* requested DPMS state */
 574         int dpms;
 575
 576         void *helper_private;
 577
 578         /* forced on connector */
 579         enum drm_connector_force force;
 580         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
 581         struct drm_encoder *encoder; /* currently active encoder */
 582
 583         /* EDID bits */
 584         uint8_t eld[MAX_ELD_BYTES];
 585         bool dvi_dual;
 586         int max_tmds_clock;     /* in MHz */
 587         bool latency_present[2];
 588         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
 589         int audio_latency[2];
 590         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
 591 };
 592
 593 /**
 594  * drm_plane_funcs - driver plane control functions
 595  * @update_plane: update the plane configuration
 596  * @disable_plane: shut down the plane
 597  * @destroy: clean up plane resources
 598  */
 599 struct drm_plane_funcs {
 600         int (*update_plane)(struct drm_plane *plane,
 601                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
 602                             int crtc_x, int crtc_y,
 603                             unsigned int crtc_w, unsigned int crtc_h,
 604                             uint32_t src_x, uint32_t src_y,
 605                             uint32_t src_w, uint32_t src_h);
 606         int (*disable_plane)(struct drm_plane *plane);
 607         void (*destroy)(struct drm_plane *plane);
 608 };
 609
 610 /**
 611  * drm_plane - central DRM plane control structure
 612  * @dev: DRM device this plane belongs to
 613  * @head: for list management
 614  * @base: base mode object
 615  * @possible_crtcs: pipes this plane can be bound to
 616  * @format_types: array of formats supported by this plane
 617  * @format_count: number of formats supported
 618  * @crtc: currently bound CRTC
 619  * @fb: currently bound fb
 620  * @gamma_size: size of gamma table
 621  * @gamma_store: gamma correction table
 622  * @enabled: enabled flag
 623  * @funcs: helper functions
 624  * @helper_private: storage for drver layer
 625  */
 626 struct drm_plane {
 627         struct drm_device *dev;
 628         struct list_head head;
 629
 630         struct drm_mode_object base;
 631
 632         uint32_t possible_crtcs;
 633         uint32_t *format_types;
 634         uint32_t format_count;
 635
 636         struct drm_crtc *crtc;
 637         struct drm_framebuffer *fb;
 638
 639         /* CRTC gamma size for reporting to userspace */
 640         uint32_t gamma_size;
 641         uint16_t *gamma_store;
 642
 643         bool enabled;
 644
 645         const struct drm_plane_funcs *funcs;
 646         void *helper_private;
 647 };
 648
 649 /**
 650  * drm_mode_set - new values for a CRTC config change
 651  * @head: list management
 652  * @fb: framebuffer to use for new config
 653  * @crtc: CRTC whose configuration we're about to change
 654  * @mode: mode timings to use
 655  * @x: position of this CRTC relative to @fb
 656  * @y: position of this CRTC relative to @fb
 657  * @connectors: array of connectors to drive with this CRTC if possible
 658  * @num_connectors: size of @connectors array
 659  *
 660  * Represents a single crtc the connectors that it drives with what mode
 661  * and from which framebuffer it scans out from.
 662  *
 663  * This is used to set modes.
 664  */
 665 struct drm_mode_set {
 666         struct list_head head;
 667
 668         struct drm_framebuffer *fb;
 669         struct drm_crtc *crtc;
 670         struct drm_display_mode *mode;
 671
 672         uint32_t x;
 673         uint32_t y;
 674
 675         struct drm_connector **connectors;
 676         size_t num_connectors;
 677 };
 678
 679 /**
 680  * struct drm_mode_config_funcs - basic driver provided mode setting functions
 681  * @fb_create: create a new framebuffer object
 682  * @output_poll_changed: function to handle output configuration changes
 683  *
 684  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
 685  * involve drivers.
 686  */
 687 struct drm_mode_config_funcs {
 688         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
 689                                              struct drm_file *file_priv,
 690                                              struct drm_mode_fb_cmd2 *mode_cmd);
 691         void (*output_poll_changed)(struct drm_device *dev);
 692 };
 693
 694 /**
 695  * drm_mode_group - group of mode setting resources for potential sub-grouping
 696  * @num_crtcs: CRTC count
 697  * @num_encoders: encoder count
 698  * @num_connectors: connector count
 699  * @id_list: list of KMS object IDs in this group
 700  *
 701  * Currently this simply tracks the global mode setting state.  But in the
 702  * future it could allow groups of objects to be set aside into independent
 703  * control groups for use by different user level processes (e.g. two X servers
 704  * running simultaneously on different heads, each with their own mode
 705  * configuration and freedom of mode setting).
 706  */
 707 struct drm_mode_group {
 708         uint32_t num_crtcs;
 709         uint32_t num_encoders;
 710         uint32_t num_connectors;
 711
 712         /* list of object IDs for this group */
 713         uint32_t *id_list;
 714 };
 715
 716 /**
 717  * drm_mode_config - Mode configuration control structure
 718  * @mutex: mutex protecting KMS related lists and structures
 719  * @idr_mutex: mutex for KMS ID allocation and management
 720  * @crtc_idr: main KMS ID tracking object
 721  * @num_fb: number of fbs available
 722  * @fb_list: list of framebuffers available
 723  * @num_connector: number of connectors on this device
 724  * @connector_list: list of connector objects
 725  * @num_encoder: number of encoders on this device
 726  * @encoder_list: list of encoder objects
 727  * @num_crtc: number of CRTCs on this device
 728  * @crtc_list: list of CRTC objects
 729  * @min_width: minimum pixel width on this device
 730  * @min_height: minimum pixel height on this device
 731  * @max_width: maximum pixel width on this device
 732  * @max_height: maximum pixel height on this device
 733  * @funcs: core driver provided mode setting functions
 734  * @fb_base: base address of the framebuffer
 735  * @poll_enabled: track polling status for this device
 736  * @output_poll_work: delayed work for polling in process context
 737  * @*_property: core property tracking
 738  *
 739  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
 740  * enumerated by the driver are added here, as are global properties.  Some
 741  * global restrictions are also here, e.g. dimension restrictions.
 742  */
 743 struct drm_mode_config {
 744         struct mutex mutex; /* protects configuration (mode lists etc.) */
 745         struct mutex idr_mutex; /* for IDR management */
 746         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
 747         /* this is limited to one for now */
 748         int num_fb;
 749         struct list_head fb_list;
 750         int num_connector;
 751         struct list_head connector_list;
 752         int num_encoder;
 753         struct list_head encoder_list;
 754         int num_plane;
 755         struct list_head plane_list;
 756
 757         int num_crtc;
 758         struct list_head crtc_list;
 759
 760         struct list_head property_list;
 761
 762         int min_width, min_height;
 763         int max_width, max_height;
 764         struct drm_mode_config_funcs *funcs;
 765         resource_size_t fb_base;
 766
 767         /* output poll support */
 768         bool poll_enabled;
 769         struct delayed_work output_poll_work;
 770
 771         /* pointers to standard properties */
 772         struct list_head property_blob_list;
 773         struct drm_property *edid_property;
 774         struct drm_property *dpms_property;
 775
 776         /* DVI-I properties */
 777         struct drm_property *dvi_i_subconnector_property;
 778         struct drm_property *dvi_i_select_subconnector_property;
 779
 780         /* TV properties */
 781         struct drm_property *tv_subconnector_property;
 782         struct drm_property *tv_select_subconnector_property;
 783         struct drm_property *tv_mode_property;
 784         struct drm_property *tv_left_margin_property;
 785         struct drm_property *tv_right_margin_property;
 786         struct drm_property *tv_top_margin_property;
 787         struct drm_property *tv_bottom_margin_property;
 788         struct drm_property *tv_brightness_property;
 789         struct drm_property *tv_contrast_property;
 790         struct drm_property *tv_flicker_reduction_property;
 791         struct drm_property *tv_overscan_property;
 792         struct drm_property *tv_saturation_property;
 793         struct drm_property *tv_hue_property;
 794
 795         /* Optional properties */
 796         struct drm_property *scaling_mode_property;
 797         struct drm_property *dithering_mode_property;
 798         struct drm_property *dirty_info_property;
 799 };
 800
 801 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
 802 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
 803 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
 804 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
 805 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
 806 #define obj_to_property(x) container_of(x, struct drm_property, base)
 807 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
 808 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
 809
 810
 811 extern void drm_crtc_init(struct drm_device *dev,
 812                           struct drm_crtc *crtc,
 813                           const struct drm_crtc_funcs *funcs);
 814 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
 815
 816 extern void drm_connector_init(struct drm_device *dev,
 817                             struct drm_connector *connector,
 818                             const struct drm_connector_funcs *funcs,
 819                             int connector_type);
 820
 821 extern void drm_connector_cleanup(struct drm_connector *connector);
 822
 823 extern void drm_encoder_init(struct drm_device *dev,
 824                              struct drm_encoder *encoder,
 825                              const struct drm_encoder_funcs *funcs,
 826                              int encoder_type);
 827
 828 extern int drm_plane_init(struct drm_device *dev,
 829                           struct drm_plane *plane,
 830                           unsigned long possible_crtcs,
 831                           const struct drm_plane_funcs *funcs,
 832                           const uint32_t *formats, uint32_t format_count,
 833                           bool priv);
 834 extern void drm_plane_cleanup(struct drm_plane *plane);
 835
 836 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
 837
 838 extern char *drm_get_connector_name(struct drm_connector *connector);
 839 extern char *drm_get_dpms_name(int val);
 840 extern char *drm_get_dvi_i_subconnector_name(int val);
 841 extern char *drm_get_dvi_i_select_name(int val);
 842 extern char *drm_get_tv_subconnector_name(int val);
 843 extern char *drm_get_tv_select_name(int val);
 844 extern void drm_fb_release(struct drm_file *file_priv);
 845 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
 846 extern struct edid *drm_get_edid(struct drm_connector *connector,
 847                                  struct i2c_adapter *adapter);
 848 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
 849 extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
 850 extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
 851 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
 852                                                    const struct drm_display_mode *mode);
 853 extern void drm_mode_debug_printmodeline(struct drm_display_mode *mode);
 854 extern void drm_mode_config_init(struct drm_device *dev);
 855 extern void drm_mode_config_reset(struct drm_device *dev);
 856 extern void drm_mode_config_cleanup(struct drm_device *dev);
 857 extern void drm_mode_set_name(struct drm_display_mode *mode);
 858 extern bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2);
 859 extern int drm_mode_width(struct drm_display_mode *mode);
 860 extern int drm_mode_height(struct drm_display_mode *mode);
 861
 862 /* for us by fb module */
 863 extern int drm_mode_attachmode_crtc(struct drm_device *dev,
 864                                     struct drm_crtc *crtc,
 865                                     struct drm_display_mode *mode);
 866 extern int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode);
 867
 868 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
 869 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
 870 extern void drm_mode_list_concat(struct list_head *head,
 871                                  struct list_head *new);
 872 extern void drm_mode_validate_size(struct drm_device *dev,
 873                                    struct list_head *mode_list,
 874                                    int maxX, int maxY, int maxPitch);
 875 extern void drm_mode_prune_invalid(struct drm_device *dev,
 876                                    struct list_head *mode_list, bool verbose);
 877 extern void drm_mode_sort(struct list_head *mode_list);
 878 extern int drm_mode_hsync(const struct drm_display_mode *mode);
 879 extern int drm_mode_vrefresh(const struct drm_display_mode *mode);
 880 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
 881                                   int adjust_flags);
 882 extern void drm_mode_connector_list_update(struct drm_connector *connector);
 883 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
 884                                                 struct edid *edid);
 885 extern int drm_connector_property_set_value(struct drm_connector *connector,
 886                                          struct drm_property *property,
 887                                          uint64_t value);
 888 extern int drm_connector_property_get_value(struct drm_connector *connector,
 889                                          struct drm_property *property,
 890                                          uint64_t *value);
 891 extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
 892 extern void drm_framebuffer_set_object(struct drm_device *dev,
 893                                        unsigned long handle);
 894 extern int drm_framebuffer_init(struct drm_device *dev,
 895                                 struct drm_framebuffer *fb,
 896                                 const struct drm_framebuffer_funcs *funcs);
 897 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
 898 extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
 899 extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
 900 extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY);
 901 extern bool drm_crtc_in_use(struct drm_crtc *crtc);
 902
 903 extern int drm_connector_attach_property(struct drm_connector *connector,
 904                                       struct drm_property *property, uint64_t init_val);
 905 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
 906                                                 const char *name, int num_values);
 907 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
 908 extern int drm_property_add_enum(struct drm_property *property, int index,
 909                                  uint64_t value, const char *name);
 910 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
 911 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
 912                                      char *formats[]);
 913 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
 914 extern int drm_mode_create_dithering_property(struct drm_device *dev);
 915 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
 916 extern char *drm_get_encoder_name(struct drm_encoder *encoder);
 917
 918 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
 919                                              struct drm_encoder *encoder);
 920 extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
 921                                            struct drm_encoder *encoder);
 922 extern bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
 923                                          int gamma_size);
 924 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 925                 uint32_t id, uint32_t type);
 926 /* IOCTLs */
 927 extern int drm_mode_getresources(struct drm_device *dev,
 928                                  void *data, struct drm_file *file_priv);
 929 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
 930                                    struct drm_file *file_priv);
 931 extern int drm_mode_getcrtc(struct drm_device *dev,
 932                             void *data, struct drm_file *file_priv);
 933 extern int drm_mode_getconnector(struct drm_device *dev,
 934                               void *data, struct drm_file *file_priv);
 935 extern int drm_mode_setcrtc(struct drm_device *dev,
 936                             void *data, struct drm_file *file_priv);
 937 extern int drm_mode_getplane(struct drm_device *dev,
 938                                void *data, struct drm_file *file_priv);
 939 extern int drm_mode_setplane(struct drm_device *dev,
 940                                void *data, struct drm_file *file_priv);
 941 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
 942                                 void *data, struct drm_file *file_priv);
 943 extern int drm_mode_addfb(struct drm_device *dev,
 944                           void *data, struct drm_file *file_priv);
 945 extern int drm_mode_addfb2(struct drm_device *dev,
 946                            void *data, struct drm_file *file_priv);
 947 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
 948 extern int drm_mode_rmfb(struct drm_device *dev,
 949                          void *data, struct drm_file *file_priv);
 950 extern int drm_mode_getfb(struct drm_device *dev,
 951                           void *data, struct drm_file *file_priv);
 952 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
 953                                   void *data, struct drm_file *file_priv);
 954 extern int drm_mode_addmode_ioctl(struct drm_device *dev,
 955                                   void *data, struct drm_file *file_priv);
 956 extern int drm_mode_rmmode_ioctl(struct drm_device *dev,
 957                                  void *data, struct drm_file *file_priv);
 958 extern int drm_mode_attachmode_ioctl(struct drm_device *dev,
 959                                      void *data, struct drm_file *file_priv);
 960 extern int drm_mode_detachmode_ioctl(struct drm_device *dev,
 961                                      void *data, struct drm_file *file_priv);
 962
 963 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
 964                                       void *data, struct drm_file *file_priv);
 965 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
 966                                   void *data, struct drm_file *file_priv);
 967 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
 968                                               void *data, struct drm_file *file_priv);
 969 extern int drm_mode_hotplug_ioctl(struct drm_device *dev,
 970                                   void *data, struct drm_file *file_priv);
 971 extern int drm_mode_replacefb(struct drm_device *dev,
 972                               void *data, struct drm_file *file_priv);
 973 extern int drm_mode_getencoder(struct drm_device *dev,
 974                                void *data, struct drm_file *file_priv);
 975 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
 976                                     void *data, struct drm_file *file_priv);
 977 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
 978                                     void *data, struct drm_file *file_priv);
 979 extern u8 *drm_find_cea_extension(struct edid *edid);
 980 extern bool drm_detect_hdmi_monitor(struct edid *edid);
 981 extern bool drm_detect_monitor_audio(struct edid *edid);
 982 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
 983                                     void *data, struct drm_file *file_priv);
 984 extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
 985                                 int hdisplay, int vdisplay, int vrefresh,
 986                                 bool reduced, bool interlaced, bool margins);
 987 extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
 988                                 int hdisplay, int vdisplay, int vrefresh,
 989                                 bool interlaced, int margins);
 990 extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
 991                                 int hdisplay, int vdisplay, int vrefresh,
 992                                 bool interlaced, int margins, int GTF_M,
 993                                 int GTF_2C, int GTF_K, int GTF_2J);
 994 extern int drm_add_modes_noedid(struct drm_connector *connector,
 995                                 int hdisplay, int vdisplay);
 996
 997 extern int drm_edid_header_is_valid(const u8 *raw_edid);
 998 extern bool drm_edid_is_valid(struct edid *edid);
 999 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1000                                            int hsize, int vsize, int fresh);
1001
1002 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1003                                       void *data, struct drm_file *file_priv);
1004 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1005                                     void *data, struct drm_file *file_priv);
1006 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1007                                       void *data, struct drm_file *file_priv);
1008
1009 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1010                                  int *bpp);
1011 #endif /* __DRM_CRTC_H__ */