drivers/gpu/drm/amd/display/dc/dc.h

   1 /*
   2  * Copyright 2012-14 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: AMD
  23  *
  24  */
  25
  26 #ifndef DC_INTERFACE_H_
  27 #define DC_INTERFACE_H_
  28
  29 #include "dc_types.h"
  30 #include "grph_object_defs.h"
  31 #include "logger_types.h"
  32 #include "gpio_types.h"
  33 #include "link_service_types.h"
  34
  35 #define MAX_SURFACES 3
  36 #define MAX_STREAMS 6
  37 #define MAX_SINKS_PER_LINK 4
  38
  39 /*******************************************************************************
  40  * Display Core Interfaces
  41  ******************************************************************************/
  42
  43 struct dc_caps {
  44         uint32_t max_streams;
  45         uint32_t max_links;
  46         uint32_t max_audios;
  47         uint32_t max_slave_planes;
  48         uint32_t max_downscale_ratio;
  49         uint32_t i2c_speed_in_khz;
  50 };
  51
  52
  53 struct dc_dcc_surface_param {
  54         enum surface_pixel_format format;
  55         struct dc_size surface_size;
  56         enum dc_scan_direction scan;
  57 };
  58
  59 struct dc_dcc_setting {
  60         unsigned int max_compressed_blk_size;
  61         unsigned int max_uncompressed_blk_size;
  62         bool independent_64b_blks;
  63 };
  64
  65 struct dc_surface_dcc_cap {
  66         bool capable;
  67         bool const_color_support;
  68
  69         union {
  70                 struct {
  71                         struct dc_dcc_setting rgb;
  72                 } grph;
  73
  74                 struct {
  75                         struct dc_dcc_setting luma;
  76                         struct dc_dcc_setting chroma;
  77                 } video;
  78         };
  79 };
  80
  81 /* Forward declaration*/
  82 struct dc;
  83 struct dc_surface;
  84 struct validate_context;
  85
  86 struct dc_cap_funcs {
  87         int i;
  88 };
  89
  90 struct dc_stream_funcs {
  91         bool (*adjust_vmin_vmax)(struct dc *dc,
  92                         const struct dc_stream **stream,
  93                         int num_streams,
  94                         int vmin,
  95                         int vmax);
  96
  97         void (*stream_update_scaling)(const struct dc *dc,
  98                         const struct dc_stream *dc_stream,
  99                         const struct rect *src,
 100                         const struct rect *dst);
 101         bool (*set_gamut_remap)(struct dc *dc,
 102                         const struct dc_stream **stream, int num_streams);
 103         bool (*set_psr_enable)(struct dc *dc, bool enable);
 104         bool (*setup_psr)(struct dc *dc, const struct dc_stream *stream);
 105 };
 106
 107 struct link_training_settings;
 108
 109 struct dc_link_funcs {
 110         void (*set_drive_settings)(struct dc *dc,
 111                         struct link_training_settings *lt_settings,
 112                         const struct dc_link *link);
 113         void (*perform_link_training)(struct dc *dc,
 114                         struct dc_link_settings *link_setting,
 115                         bool skip_video_pattern);
 116         void (*set_preferred_link_settings)(struct dc *dc,
 117                         struct dc_link_settings *link_setting,
 118                         const struct dc_link *link);
 119         void (*enable_hpd)(const struct dc_link *link);
 120         void (*disable_hpd)(const struct dc_link *link);
 121         void (*set_test_pattern)(
 122                         const struct dc_link *link,
 123                         enum dp_test_pattern test_pattern,
 124                         const struct link_training_settings *p_link_settings,
 125                         const unsigned char *p_custom_pattern,
 126                         unsigned int cust_pattern_size);
 127 };
 128
 129 /* Structure to hold configuration flags set by dm at dc creation. */
 130 struct dc_config {
 131         bool gpu_vm_support;
 132         bool disable_disp_pll_sharing;
 133 };
 134
 135 struct dc_debug {
 136         bool surface_visual_confirm;
 137         bool max_disp_clk;
 138         bool surface_trace;
 139         bool timing_trace;
 140         bool validation_trace;
 141         bool disable_stutter;
 142         bool disable_dcc;
 143         bool disable_dfs_bypass;
 144         bool disable_clock_gate;
 145         bool disable_dmcu;
 146 };
 147
 148 struct dc {
 149         struct dc_caps caps;
 150         struct dc_cap_funcs cap_funcs;
 151         struct dc_stream_funcs stream_funcs;
 152         struct dc_link_funcs link_funcs;
 153         struct dc_config config;
 154         struct dc_debug debug;
 155 };
 156
 157 struct dc_init_data {
 158         struct hw_asic_id asic_id;
 159         void *driver; /* ctx */
 160         struct cgs_device *cgs_device;
 161
 162         int num_virtual_links;
 163         /*
 164          * If 'vbios_override' not NULL, it will be called instead
 165          * of the real VBIOS. Intended use is Diagnostics on FPGA.
 166          */
 167         struct dc_bios *vbios_override;
 168         enum dce_environment dce_environment;
 169
 170         struct dc_config flags;
 171 };
 172
 173 struct dc *dc_create(const struct dc_init_data *init_params);
 174
 175 void dc_destroy(struct dc **dc);
 176
 177 /*******************************************************************************
 178  * Surface Interfaces
 179  ******************************************************************************/
 180
 181 enum {
 182         TRANSFER_FUNC_POINTS = 1025
 183 };
 184
 185 struct dc_hdr_static_metadata {
 186         bool is_hdr;
 187
 188         /* display chromaticities and white point in units of 0.00001 */
 189         unsigned int chromaticity_green_x;
 190         unsigned int chromaticity_green_y;
 191         unsigned int chromaticity_blue_x;
 192         unsigned int chromaticity_blue_y;
 193         unsigned int chromaticity_red_x;
 194         unsigned int chromaticity_red_y;
 195         unsigned int chromaticity_white_point_x;
 196         unsigned int chromaticity_white_point_y;
 197
 198         uint32_t min_luminance;
 199         uint32_t max_luminance;
 200         uint32_t maximum_content_light_level;
 201         uint32_t maximum_frame_average_light_level;
 202 };
 203
 204 enum dc_transfer_func_type {
 205         TF_TYPE_PREDEFINED,
 206         TF_TYPE_DISTRIBUTED_POINTS,
 207 };
 208
 209 struct dc_transfer_func_distributed_points {
 210         struct fixed31_32 red[TRANSFER_FUNC_POINTS];
 211         struct fixed31_32 green[TRANSFER_FUNC_POINTS];
 212         struct fixed31_32 blue[TRANSFER_FUNC_POINTS];
 213
 214         uint16_t end_exponent;
 215         uint16_t x_point_at_y1_red;
 216         uint16_t x_point_at_y1_green;
 217         uint16_t x_point_at_y1_blue;
 218 };
 219
 220 enum dc_transfer_func_predefined {
 221         TRANSFER_FUNCTION_SRGB,
 222         TRANSFER_FUNCTION_BT709,
 223         TRANSFER_FUNCTION_PQ,
 224         TRANSFER_FUNCTION_LINEAR,
 225 };
 226
 227 struct dc_transfer_func {
 228         enum dc_transfer_func_type type;
 229         enum dc_transfer_func_predefined tf;
 230         struct dc_transfer_func_distributed_points tf_pts;
 231 };
 232
 233 struct dc_surface {
 234         bool visible;
 235         bool flip_immediate;
 236         struct dc_plane_address address;
 237
 238         struct scaling_taps scaling_quality;
 239         struct rect src_rect;
 240         struct rect dst_rect;
 241         struct rect clip_rect;
 242
 243         union plane_size plane_size;
 244         union dc_tiling_info tiling_info;
 245         struct dc_plane_dcc_param dcc;
 246         enum dc_color_space color_space;
 247
 248         enum surface_pixel_format format;
 249         enum dc_rotation_angle rotation;
 250         bool horizontal_mirror;
 251         enum plane_stereo_format stereo_format;
 252
 253         struct dc_hdr_static_metadata hdr_static_ctx;
 254
 255         const struct dc_gamma *gamma_correction;
 256         const struct dc_transfer_func *in_transfer_func;
 257 };
 258
 259 struct dc_plane_info {
 260         union plane_size plane_size;
 261         union dc_tiling_info tiling_info;
 262         struct dc_plane_dcc_param dcc;
 263         enum surface_pixel_format format;
 264         enum dc_rotation_angle rotation;
 265         bool horizontal_mirror;
 266         enum plane_stereo_format stereo_format;
 267         enum dc_color_space color_space; /*todo: wrong place, fits in scaling info*/
 268         bool visible;
 269 };
 270
 271 struct dc_scaling_info {
 272                 struct rect src_rect;
 273                 struct rect dst_rect;
 274                 struct rect clip_rect;
 275                 struct scaling_taps scaling_quality;
 276 };
 277
 278 struct dc_surface_update {
 279         const struct dc_surface *surface;
 280
 281         /* isr safe update parameters.  null means no updates */
 282         struct dc_flip_addrs *flip_addr;
 283         struct dc_plane_info *plane_info;
 284         struct dc_scaling_info *scaling_info;
 285         /* following updates require alloc/sleep/spin that is not isr safe,
 286          * null means no updates
 287          */
 288         /* gamma TO BE REMOVED */
 289         struct dc_gamma *gamma;
 290         struct dc_hdr_static_metadata *hdr_static_metadata;
 291         struct dc_transfer_func *in_transfer_func;
 292         struct dc_transfer_func *out_transfer_func;
 293
 294
 295 };
 296 /*
 297  * This structure is filled in by dc_surface_get_status and contains
 298  * the last requested address and the currently active address so the called
 299  * can determine if there are any outstanding flips
 300  */
 301 struct dc_surface_status {
 302         struct dc_plane_address requested_address;
 303         struct dc_plane_address current_address;
 304         bool is_flip_pending;
 305 };
 306
 307 /*
 308  * Create a new surface with default parameters;
 309  */
 310 struct dc_surface *dc_create_surface(const struct dc *dc);
 311 const struct dc_surface_status *dc_surface_get_status(
 312                 const struct dc_surface *dc_surface);
 313
 314 void dc_surface_retain(const struct dc_surface *dc_surface);
 315 void dc_surface_release(const struct dc_surface *dc_surface);
 316
 317 void dc_gamma_retain(const struct dc_gamma *dc_gamma);
 318 void dc_gamma_release(const struct dc_gamma **dc_gamma);
 319 struct dc_gamma *dc_create_gamma(void);
 320
 321 void dc_transfer_func_retain(const struct dc_transfer_func *dc_tf);
 322 void dc_transfer_func_release(const struct dc_transfer_func *dc_tf);
 323 struct dc_transfer_func *dc_create_transfer_func(void);
 324
 325 /*
 326  * This structure holds a surface address.  There could be multiple addresses
 327  * in cases such as Stereo 3D, Planar YUV, etc.  Other per-flip attributes such
 328  * as frame durations and DCC format can also be set.
 329  */
 330 struct dc_flip_addrs {
 331         struct dc_plane_address address;
 332         bool flip_immediate;
 333         /* TODO: add flip duration for FreeSync */
 334 };
 335
 336 /*
 337  * Optimized flip address update function.
 338  *
 339  * After this call:
 340  *   Surface addresses and flip attributes are programmed.
 341  *   Surface flip occur at next configured time (h_sync or v_sync flip)
 342  */
 343 void dc_flip_surface_addrs(struct dc *dc,
 344                 const struct dc_surface *const surfaces[],
 345                 struct dc_flip_addrs flip_addrs[],
 346                 uint32_t count);
 347
 348 /*
 349  * Set up surface attributes and associate to a stream
 350  * The surfaces parameter is an absolute set of all surface active for the stream.
 351  * If no surfaces are provided, the stream will be blanked; no memory read.
 352  * Any flip related attribute changes must be done through this interface.
 353  *
 354  * After this call:
 355  *   Surfaces attributes are programmed and configured to be composed into stream.
 356  *   This does not trigger a flip.  No surface address is programmed.
 357  */
 358
 359 bool dc_commit_surfaces_to_stream(
 360                 struct dc *dc,
 361                 const struct dc_surface **dc_surfaces,
 362                 uint8_t surface_count,
 363                 const struct dc_stream *stream);
 364
 365 bool dc_pre_update_surfaces_to_stream(
 366                 struct dc *dc,
 367                 const struct dc_surface *const *new_surfaces,
 368                 uint8_t new_surface_count,
 369                 const struct dc_stream *stream);
 370
 371 bool dc_post_update_surfaces_to_stream(
 372                 struct dc *dc);
 373
 374 void dc_update_surfaces_for_stream(struct dc *dc, struct dc_surface_update *updates,
 375                 int surface_count, const struct dc_stream *stream);
 376
 377 /*******************************************************************************
 378  * Stream Interfaces
 379  ******************************************************************************/
 380 struct dc_stream {
 381         const struct dc_sink *sink;
 382         struct dc_crtc_timing timing;
 383
 384         enum dc_color_space output_color_space;
 385
 386         struct rect src; /* composition area */
 387         struct rect dst; /* stream addressable area */
 388
 389         struct audio_info audio_info;
 390
 391         bool ignore_msa_timing_param;
 392
 393         struct freesync_context freesync_ctx;
 394
 395         const struct dc_transfer_func *out_transfer_func;
 396         struct colorspace_transform gamut_remap_matrix;
 397         struct csc_transform csc_color_matrix;
 398
 399         /* TODO: dithering */
 400         /* TODO: custom INFO packets */
 401         /* TODO: ABM info (DMCU) */
 402         /* TODO: PSR info */
 403         /* TODO: CEA VIC */
 404 };
 405
 406 /*
 407  * Log the current stream state.
 408  */
 409 void dc_stream_log(
 410         const struct dc_stream *stream,
 411         struct dal_logger *dc_logger,
 412         enum dc_log_type log_type);
 413
 414 uint8_t dc_get_current_stream_count(const struct dc *dc);
 415 struct dc_stream *dc_get_stream_at_index(const struct dc *dc, uint8_t i);
 416
 417 /*
 418  * Return the current frame counter.
 419  */
 420 uint32_t dc_stream_get_vblank_counter(const struct dc_stream *stream);
 421
 422 /* TODO: Return parsed values rather than direct register read
 423  * This has a dependency on the caller (amdgpu_get_crtc_scanoutpos)
 424  * being refactored properly to be dce-specific
 425  */
 426 uint32_t dc_stream_get_scanoutpos(
 427                 const struct dc_stream *stream, uint32_t *vbl, uint32_t *position);
 428
 429 /*
 430  * Structure to store surface/stream associations for validation
 431  */
 432 struct dc_validation_set {
 433         const struct dc_stream *stream;
 434         const struct dc_surface *surfaces[MAX_SURFACES];
 435         uint8_t surface_count;
 436 };
 437
 438 /*
 439  * This function takes a set of resources and checks that they are cofunctional.
 440  *
 441  * After this call:
 442  *   No hardware is programmed for call.  Only validation is done.
 443  */
 444 bool dc_validate_resources(
 445                 const struct dc *dc,
 446                 const struct dc_validation_set set[],
 447                 uint8_t set_count);
 448
 449 /*
 450  * This function takes a stream and checks if it is guaranteed to be supported.
 451  * Guaranteed means that MAX_COFUNC similar streams are supported.
 452  *
 453  * After this call:
 454  *   No hardware is programmed for call.  Only validation is done.
 455  */
 456
 457 bool dc_validate_guaranteed(
 458                 const struct dc *dc,
 459                 const struct dc_stream *stream);
 460
 461 /*
 462  * Set up streams and links associated to drive sinks
 463  * The streams parameter is an absolute set of all active streams.
 464  *
 465  * After this call:
 466  *   Phy, Encoder, Timing Generator are programmed and enabled.
 467  *   New streams are enabled with blank stream; no memory read.
 468  */
 469 bool dc_commit_streams(
 470                 struct dc *dc,
 471                 const struct dc_stream *streams[],
 472                 uint8_t stream_count);
 473
 474 /**
 475  * Create a new default stream for the requested sink
 476  */
 477 struct dc_stream *dc_create_stream_for_sink(const struct dc_sink *dc_sink);
 478
 479 void dc_stream_retain(const struct dc_stream *dc_stream);
 480 void dc_stream_release(const struct dc_stream *dc_stream);
 481
 482 struct dc_stream_status {
 483         int primary_otg_inst;
 484         int surface_count;
 485         const struct dc_surface *surfaces[MAX_SURFACE_NUM];
 486
 487         /*
 488          * link this stream passes through
 489          */
 490         const struct dc_link *link;
 491 };
 492
 493 const struct dc_stream_status *dc_stream_get_status(
 494         const struct dc_stream *dc_stream);
 495
 496 /*******************************************************************************
 497  * Link Interfaces
 498  ******************************************************************************/
 499
 500 /*
 501  * A link contains one or more sinks and their connected status.
 502  * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
 503  */
 504 struct dc_link {
 505         const struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
 506         unsigned int sink_count;
 507         const struct dc_sink *local_sink;
 508         unsigned int link_index;
 509         enum dc_connection_type type;
 510         enum signal_type connector_signal;
 511         enum dc_irq_source irq_source_hpd;
 512         enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse  */
 513         /* caps is the same as reported_link_cap. link_traing use
 514          * reported_link_cap. Will clean up.  TODO
 515          */
 516         struct dc_link_settings reported_link_cap;
 517         struct dc_link_settings verified_link_cap;
 518         struct dc_link_settings max_link_setting;
 519         struct dc_link_settings cur_link_settings;
 520         struct dc_lane_settings cur_lane_setting;
 521
 522         uint8_t ddc_hw_inst;
 523         uint8_t link_enc_hw_inst;
 524
 525         struct psr_caps psr_caps;
 526         bool test_pattern_enabled;
 527         union compliance_test_state compliance_test_state;
 528 };
 529
 530 struct dpcd_caps {
 531         union dpcd_rev dpcd_rev;
 532         union max_lane_count max_ln_count;
 533         union max_down_spread max_down_spread;
 534
 535         /* dongle type (DP converter, CV smart dongle) */
 536         enum display_dongle_type dongle_type;
 537         /* Dongle's downstream count. */
 538         union sink_count sink_count;
 539         /* If dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER,
 540         indicates 'Frame Sequential-to-lllFrame Pack' conversion capability.*/
 541         bool is_dp_hdmi_s3d_converter;
 542
 543         bool allow_invalid_MSA_timing_param;
 544         bool panel_mode_edp;
 545         uint32_t sink_dev_id;
 546         uint32_t branch_dev_id;
 547         int8_t branch_dev_name[6];
 548         int8_t branch_hw_revision;
 549 };
 550
 551 struct dc_link_status {
 552         struct dpcd_caps *dpcd_caps;
 553 };
 554
 555 const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
 556
 557 /*
 558  * Return an enumerated dc_link.  dc_link order is constant and determined at
 559  * boot time.  They cannot be created or destroyed.
 560  * Use dc_get_caps() to get number of links.
 561  */
 562 const struct dc_link *dc_get_link_at_index(const struct dc *dc, uint32_t link_index);
 563
 564 /* Return id of physical connector represented by a dc_link at link_index.*/
 565 const struct graphics_object_id dc_get_link_id_at_index(
 566                 struct dc *dc, uint32_t link_index);
 567
 568 /* Set backlight level of an embedded panel (eDP, LVDS). */
 569 bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t level,
 570                 uint32_t frame_ramp, const struct dc_stream *stream);
 571
 572 bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable);
 573
 574 bool dc_link_setup_psr(const struct dc_link *dc_link,
 575                 const struct dc_stream *stream);
 576
 577 /* Request DC to detect if there is a Panel connected.
 578  * boot - If this call is during initial boot.
 579  * Return false for any type of detection failure or MST detection
 580  * true otherwise. True meaning further action is required (status update
 581  * and OS notification).
 582  */
 583 bool dc_link_detect(const struct dc_link *dc_link, bool boot);
 584
 585 /* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
 586  * Return:
 587  * true - Downstream port status changed. DM should call DC to do the
 588  * detection.
 589  * false - no change in Downstream port status. No further action required
 590  * from DM. */
 591 bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link);
 592
 593 struct dc_sink_init_data;
 594
 595 struct dc_sink *dc_link_add_remote_sink(
 596                 const struct dc_link *dc_link,
 597                 const uint8_t *edid,
 598                 int len,
 599                 struct dc_sink_init_data *init_data);
 600
 601 void dc_link_remove_remote_sink(
 602         const struct dc_link *link,
 603         const struct dc_sink *sink);
 604
 605 /* Used by diagnostics for virtual link at the moment */
 606 void dc_link_set_sink(const struct dc_link *link, struct dc_sink *sink);
 607
 608 void dc_link_dp_set_drive_settings(
 609         struct dc_link *link,
 610         struct link_training_settings *lt_settings);
 611
 612 bool dc_link_dp_perform_link_training(
 613         struct dc_link *link,
 614         const struct dc_link_settings *link_setting,
 615         bool skip_video_pattern);
 616
 617 void dc_link_dp_enable_hpd(const struct dc_link *link);
 618
 619 void dc_link_dp_disable_hpd(const struct dc_link *link);
 620
 621 bool dc_link_dp_set_test_pattern(
 622         const struct dc_link *link,
 623         enum dp_test_pattern test_pattern,
 624         const struct link_training_settings *p_link_settings,
 625         const unsigned char *p_custom_pattern,
 626         unsigned int cust_pattern_size);
 627
 628 /*******************************************************************************
 629  * Sink Interfaces - A sink corresponds to a display output device
 630  ******************************************************************************/
 631
 632 /*
 633  * The sink structure contains EDID and other display device properties
 634  */
 635 struct dc_sink {
 636         enum signal_type sink_signal;
 637         struct dc_edid dc_edid; /* raw edid */
 638         struct dc_edid_caps edid_caps; /* parse display caps */
 639 };
 640
 641 void dc_sink_retain(const struct dc_sink *sink);
 642 void dc_sink_release(const struct dc_sink *sink);
 643
 644 const struct audio **dc_get_audios(struct dc *dc);
 645
 646 struct dc_sink_init_data {
 647         enum signal_type sink_signal;
 648         const struct dc_link *link;
 649         uint32_t dongle_max_pix_clk;
 650         bool converter_disable_audio;
 651 };
 652
 653 struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params);
 654
 655 /*******************************************************************************
 656  * Cursor interfaces - To manages the cursor within a stream
 657  ******************************************************************************/
 658 /* TODO: Deprecated once we switch to dc_set_cursor_position */
 659 bool dc_stream_set_cursor_attributes(
 660         const struct dc_stream *stream,
 661         const struct dc_cursor_attributes *attributes);
 662
 663 bool dc_stream_set_cursor_position(
 664         const struct dc_stream *stream,
 665         const struct dc_cursor_position *position);
 666
 667 /* Newer interfaces  */
 668 struct dc_cursor {
 669         struct dc_plane_address address;
 670         struct dc_cursor_attributes attributes;
 671 };
 672
 673 /*******************************************************************************
 674  * Interrupt interfaces
 675  ******************************************************************************/
 676 enum dc_irq_source dc_interrupt_to_irq_source(
 677                 struct dc *dc,
 678                 uint32_t src_id,
 679                 uint32_t ext_id);
 680 void dc_interrupt_set(const struct dc *dc, enum dc_irq_source src, bool enable);
 681 void dc_interrupt_ack(struct dc *dc, enum dc_irq_source src);
 682 enum dc_irq_source dc_get_hpd_irq_source_at_index(
 683                 struct dc *dc, uint32_t link_index);
 684
 685 /*******************************************************************************
 686  * Power Interfaces
 687  ******************************************************************************/
 688
 689 void dc_set_power_state(
 690                 struct dc *dc,
 691                 enum dc_acpi_cm_power_state power_state,
 692                 enum dc_video_power_state video_power_state);
 693 void dc_resume(const struct dc *dc);
 694
 695 /*******************************************************************************
 696  * DDC Interfaces
 697  ******************************************************************************/
 698
 699 const struct ddc_service *dc_get_ddc_at_index(
 700                 struct dc *dc, uint32_t link_index);
 701
 702 /*
 703  * DPCD access interfaces
 704  */
 705
 706 bool dc_read_dpcd(
 707                 struct dc *dc,
 708                 uint32_t link_index,
 709                 uint32_t address,
 710                 uint8_t *data,
 711                 uint32_t size);
 712
 713 bool dc_write_dpcd(
 714                 struct dc *dc,
 715                 uint32_t link_index,
 716                 uint32_t address,
 717                 const uint8_t *data,
 718         uint32_t size);
 719
 720 bool dc_submit_i2c(
 721                 struct dc *dc,
 722                 uint32_t link_index,
 723                 struct i2c_command *cmd);
 724
 725
 726 #endif /* DC_INTERFACE_H_ */