drivers/gpu/drm/i915/intel_drv.h

   1 /*
   2  * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
   3  * Copyright (c) 2007-2008 Intel Corporation
   4  *   Jesse Barnes <jesse.barnes@intel.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23  * IN THE SOFTWARE.
  24  */
  25 #ifndef __INTEL_DRV_H__
  26 #define __INTEL_DRV_H__
  27
  28 #include <linux/async.h>
  29 #include <linux/i2c.h>
  30 #include <linux/hdmi.h>
  31 #include <drm/i915_drm.h>
  32 #include "i915_drv.h"
  33 #include <drm/drm_crtc.h>
  34 #include <drm/drm_crtc_helper.h>
  35 #include <drm/drm_fb_helper.h>
  36 #include <drm/drm_dp_mst_helper.h>
  37 #include <drm/drm_rect.h>
  38 #include <drm/drm_atomic.h>
  39
  40 /**
  41  * _wait_for - magic (register) wait macro
  42  *
  43  * Does the right thing for modeset paths when run under kdgb or similar atomic
  44  * contexts. Note that it's important that we check the condition again after
  45  * having timed out, since the timeout could be due to preemption or similar and
  46  * we've never had a chance to check the condition before the timeout.
  47  *
  48  * TODO: When modesetting has fully transitioned to atomic, the below
  49  * drm_can_sleep() can be removed and in_atomic()/!in_atomic() asserts
  50  * added.
  51  */
  52 #define _wait_for(COND, US, W) ({ \
  53         unsigned long timeout__ = jiffies + usecs_to_jiffies(US) + 1;   \
  54         int ret__ = 0;                                                  \
  55         while (!(COND)) {                                               \
  56                 if (time_after(jiffies, timeout__)) {                   \
  57                         if (!(COND))                                    \
  58                                 ret__ = -ETIMEDOUT;                     \
  59                         break;                                          \
  60                 }                                                       \
  61                 if ((W) && drm_can_sleep()) {                           \
  62                         usleep_range((W), (W)*2);                       \
  63                 } else {                                                \
  64                         cpu_relax();                                    \
  65                 }                                                       \
  66         }                                                               \
  67         ret__;                                                          \
  68 })
  69
  70 #define wait_for(COND, MS)              _wait_for((COND), (MS) * 1000, 1000)
  71 #define wait_for_us(COND, US)           _wait_for((COND), (US), 1)
  72
  73 /* If CONFIG_PREEMPT_COUNT is disabled, in_atomic() always reports false. */
  74 #if defined(CONFIG_DRM_I915_DEBUG) && defined(CONFIG_PREEMPT_COUNT)
  75 # define _WAIT_FOR_ATOMIC_CHECK WARN_ON_ONCE(!in_atomic())
  76 #else
  77 # define _WAIT_FOR_ATOMIC_CHECK do { } while (0)
  78 #endif
  79
  80 #define _wait_for_atomic(COND, US) ({ \
  81         unsigned long end__; \
  82         int ret__ = 0; \
  83         _WAIT_FOR_ATOMIC_CHECK; \
  84         BUILD_BUG_ON((US) > 50000); \
  85         end__ = (local_clock() >> 10) + (US) + 1; \
  86         while (!(COND)) { \
  87                 if (time_after((unsigned long)(local_clock() >> 10), end__)) { \
  88                         /* Unlike the regular wait_for(), this atomic variant \
  89                          * cannot be preempted (and we'll just ignore the issue\
  90                          * of irq interruptions) and so we know that no time \
  91                          * has passed since the last check of COND and can \
  92                          * immediately report the timeout. \
  93                          */ \
  94                         ret__ = -ETIMEDOUT; \
  95                         break; \
  96                 } \
  97                 cpu_relax(); \
  98         } \
  99         ret__; \
 100 })
 101
 102 #define wait_for_atomic(COND, MS)       _wait_for_atomic((COND), (MS) * 1000)
 103 #define wait_for_atomic_us(COND, US)    _wait_for_atomic((COND), (US))
 104
 105 #define KHz(x) (1000 * (x))
 106 #define MHz(x) KHz(1000 * (x))
 107
 108 /*
 109  * Display related stuff
 110  */
 111
 112 /* store information about an Ixxx DVO */
 113 /* The i830->i865 use multiple DVOs with multiple i2cs */
 114 /* the i915, i945 have a single sDVO i2c bus - which is different */
 115 #define MAX_OUTPUTS 6
 116 /* maximum connectors per crtcs in the mode set */
 117
 118 /* Maximum cursor sizes */
 119 #define GEN2_CURSOR_WIDTH 64
 120 #define GEN2_CURSOR_HEIGHT 64
 121 #define MAX_CURSOR_WIDTH 256
 122 #define MAX_CURSOR_HEIGHT 256
 123
 124 #define INTEL_I2C_BUS_DVO 1
 125 #define INTEL_I2C_BUS_SDVO 2
 126
 127 /* these are outputs from the chip - integrated only
 128    external chips are via DVO or SDVO output */
 129 enum intel_output_type {
 130         INTEL_OUTPUT_UNUSED = 0,
 131         INTEL_OUTPUT_ANALOG = 1,
 132         INTEL_OUTPUT_DVO = 2,
 133         INTEL_OUTPUT_SDVO = 3,
 134         INTEL_OUTPUT_LVDS = 4,
 135         INTEL_OUTPUT_TVOUT = 5,
 136         INTEL_OUTPUT_HDMI = 6,
 137         INTEL_OUTPUT_DISPLAYPORT = 7,
 138         INTEL_OUTPUT_EDP = 8,
 139         INTEL_OUTPUT_DSI = 9,
 140         INTEL_OUTPUT_UNKNOWN = 10,
 141         INTEL_OUTPUT_DP_MST = 11,
 142 };
 143
 144 #define INTEL_DVO_CHIP_NONE 0
 145 #define INTEL_DVO_CHIP_LVDS 1
 146 #define INTEL_DVO_CHIP_TMDS 2
 147 #define INTEL_DVO_CHIP_TVOUT 4
 148
 149 #define INTEL_DSI_VIDEO_MODE    0
 150 #define INTEL_DSI_COMMAND_MODE  1
 151
 152 struct intel_framebuffer {
 153         struct drm_framebuffer base;
 154         struct drm_i915_gem_object *obj;
 155         struct intel_rotation_info rot_info;
 156 };
 157
 158 struct intel_fbdev {
 159         struct drm_fb_helper helper;
 160         struct intel_framebuffer *fb;
 161         int preferred_bpp;
 162 };
 163
 164 struct intel_encoder {
 165         struct drm_encoder base;
 166
 167         enum intel_output_type type;
 168         unsigned int cloneable;
 169         void (*hot_plug)(struct intel_encoder *);
 170         bool (*compute_config)(struct intel_encoder *,
 171                                struct intel_crtc_state *);
 172         void (*pre_pll_enable)(struct intel_encoder *);
 173         void (*pre_enable)(struct intel_encoder *);
 174         void (*enable)(struct intel_encoder *);
 175         void (*mode_set)(struct intel_encoder *intel_encoder);
 176         void (*disable)(struct intel_encoder *);
 177         void (*post_disable)(struct intel_encoder *);
 178         void (*post_pll_disable)(struct intel_encoder *);
 179         /* Read out the current hw state of this connector, returning true if
 180          * the encoder is active. If the encoder is enabled it also set the pipe
 181          * it is connected to in the pipe parameter. */
 182         bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
 183         /* Reconstructs the equivalent mode flags for the current hardware
 184          * state. This must be called _after_ display->get_pipe_config has
 185          * pre-filled the pipe config. Note that intel_encoder->base.crtc must
 186          * be set correctly before calling this function. */
 187         void (*get_config)(struct intel_encoder *,
 188                            struct intel_crtc_state *pipe_config);
 189         /*
 190          * Called during system suspend after all pending requests for the
 191          * encoder are flushed (for example for DP AUX transactions) and
 192          * device interrupts are disabled.
 193          */
 194         void (*suspend)(struct intel_encoder *);
 195         int crtc_mask;
 196         enum hpd_pin hpd_pin;
 197 };
 198
 199 struct intel_panel {
 200         struct drm_display_mode *fixed_mode;
 201         struct drm_display_mode *downclock_mode;
 202         int fitting_mode;
 203
 204         /* backlight */
 205         struct {
 206                 bool present;
 207                 u32 level;
 208                 u32 min;
 209                 u32 max;
 210                 bool enabled;
 211                 bool combination_mode;  /* gen 2/4 only */
 212                 bool active_low_pwm;
 213
 214                 /* PWM chip */
 215                 bool util_pin_active_low;       /* bxt+ */
 216                 u8 controller;          /* bxt+ only */
 217                 struct pwm_device *pwm;
 218
 219                 struct backlight_device *device;
 220
 221                 /* Connector and platform specific backlight functions */
 222                 int (*setup)(struct intel_connector *connector, enum pipe pipe);
 223                 uint32_t (*get)(struct intel_connector *connector);
 224                 void (*set)(struct intel_connector *connector, uint32_t level);
 225                 void (*disable)(struct intel_connector *connector);
 226                 void (*enable)(struct intel_connector *connector);
 227                 uint32_t (*hz_to_pwm)(struct intel_connector *connector,
 228                                       uint32_t hz);
 229                 void (*power)(struct intel_connector *, bool enable);
 230         } backlight;
 231 };
 232
 233 struct intel_connector {
 234         struct drm_connector base;
 235         /*
 236          * The fixed encoder this connector is connected to.
 237          */
 238         struct intel_encoder *encoder;
 239
 240         /* Reads out the current hw, returning true if the connector is enabled
 241          * and active (i.e. dpms ON state). */
 242         bool (*get_hw_state)(struct intel_connector *);
 243
 244         /*
 245          * Removes all interfaces through which the connector is accessible
 246          * - like sysfs, debugfs entries -, so that no new operations can be
 247          * started on the connector. Also makes sure all currently pending
 248          * operations finish before returing.
 249          */
 250         void (*unregister)(struct intel_connector *);
 251
 252         /* Panel info for eDP and LVDS */
 253         struct intel_panel panel;
 254
 255         /* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
 256         struct edid *edid;
 257         struct edid *detect_edid;
 258
 259         /* since POLL and HPD connectors may use the same HPD line keep the native
 260            state of connector->polled in case hotplug storm detection changes it */
 261         u8 polled;
 262
 263         void *port; /* store this opaque as its illegal to dereference it */
 264
 265         struct intel_dp *mst_port;
 266 };
 267
 268 typedef struct dpll {
 269         /* given values */
 270         int n;
 271         int m1, m2;
 272         int p1, p2;
 273         /* derived values */
 274         int     dot;
 275         int     vco;
 276         int     m;
 277         int     p;
 278 } intel_clock_t;
 279
 280 struct intel_atomic_state {
 281         struct drm_atomic_state base;
 282
 283         unsigned int cdclk;
 284
 285         /*
 286          * Calculated device cdclk, can be different from cdclk
 287          * only when all crtc's are DPMS off.
 288          */
 289         unsigned int dev_cdclk;
 290
 291         bool dpll_set, modeset;
 292
 293         unsigned int active_crtcs;
 294         unsigned int min_pixclk[I915_MAX_PIPES];
 295
 296         struct intel_shared_dpll_config shared_dpll[I915_NUM_PLLS];
 297         struct intel_wm_config wm_config;
 298
 299         /*
 300          * Current watermarks can't be trusted during hardware readout, so
 301          * don't bother calculating intermediate watermarks.
 302          */
 303         bool skip_intermediate_wm;
 304 };
 305
 306 struct intel_plane_state {
 307         struct drm_plane_state base;
 308         struct drm_rect src;
 309         struct drm_rect dst;
 310         struct drm_rect clip;
 311         bool visible;
 312
 313         /*
 314          * scaler_id
 315          *    = -1 : not using a scaler
 316          *    >=  0 : using a scalers
 317          *
 318          * plane requiring a scaler:
 319          *   - During check_plane, its bit is set in
 320          *     crtc_state->scaler_state.scaler_users by calling helper function
 321          *     update_scaler_plane.
 322          *   - scaler_id indicates the scaler it got assigned.
 323          *
 324          * plane doesn't require a scaler:
 325          *   - this can happen when scaling is no more required or plane simply
 326          *     got disabled.
 327          *   - During check_plane, corresponding bit is reset in
 328          *     crtc_state->scaler_state.scaler_users by calling helper function
 329          *     update_scaler_plane.
 330          */
 331         int scaler_id;
 332
 333         struct drm_intel_sprite_colorkey ckey;
 334
 335         /* async flip related structures */
 336         struct drm_i915_gem_request *wait_req;
 337 };
 338
 339 struct intel_initial_plane_config {
 340         struct intel_framebuffer *fb;
 341         unsigned int tiling;
 342         int size;
 343         u32 base;
 344 };
 345
 346 #define SKL_MIN_SRC_W 8
 347 #define SKL_MAX_SRC_W 4096
 348 #define SKL_MIN_SRC_H 8
 349 #define SKL_MAX_SRC_H 4096
 350 #define SKL_MIN_DST_W 8
 351 #define SKL_MAX_DST_W 4096
 352 #define SKL_MIN_DST_H 8
 353 #define SKL_MAX_DST_H 4096
 354
 355 struct intel_scaler {
 356         int in_use;
 357         uint32_t mode;
 358 };
 359
 360 struct intel_crtc_scaler_state {
 361 #define SKL_NUM_SCALERS 2
 362         struct intel_scaler scalers[SKL_NUM_SCALERS];
 363
 364         /*
 365          * scaler_users: keeps track of users requesting scalers on this crtc.
 366          *
 367          *     If a bit is set, a user is using a scaler.
 368          *     Here user can be a plane or crtc as defined below:
 369          *       bits 0-30 - plane (bit position is index from drm_plane_index)
 370          *       bit 31    - crtc
 371          *
 372          * Instead of creating a new index to cover planes and crtc, using
 373          * existing drm_plane_index for planes which is well less than 31
 374          * planes and bit 31 for crtc. This should be fine to cover all
 375          * our platforms.
 376          *
 377          * intel_atomic_setup_scalers will setup available scalers to users
 378          * requesting scalers. It will gracefully fail if request exceeds
 379          * avilability.
 380          */
 381 #define SKL_CRTC_INDEX 31
 382         unsigned scaler_users;
 383
 384         /* scaler used by crtc for panel fitting purpose */
 385         int scaler_id;
 386 };
 387
 388 /* drm_mode->private_flags */
 389 #define I915_MODE_FLAG_INHERITED 1
 390
 391 struct intel_pipe_wm {
 392         struct intel_wm_level wm[5];
 393         uint32_t linetime;
 394         bool fbc_wm_enabled;
 395         bool pipe_enabled;
 396         bool sprites_enabled;
 397         bool sprites_scaled;
 398 };
 399
 400 struct skl_pipe_wm {
 401         struct skl_wm_level wm[8];
 402         struct skl_wm_level trans_wm;
 403         uint32_t linetime;
 404 };
 405
 406 struct intel_crtc_state {
 407         struct drm_crtc_state base;
 408
 409         /**
 410          * quirks - bitfield with hw state readout quirks
 411          *
 412          * For various reasons the hw state readout code might not be able to
 413          * completely faithfully read out the current state. These cases are
 414          * tracked with quirk flags so that fastboot and state checker can act
 415          * accordingly.
 416          */
 417 #define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS       (1<<0) /* unreliable sync mode.flags */
 418         unsigned long quirks;
 419
 420         bool update_pipe; /* can a fast modeset be performed? */
 421         bool disable_cxsr;
 422         bool wm_changed; /* watermarks are updated */
 423         bool fb_changed; /* fb on any of the planes is changed */
 424
 425         /* Pipe source size (ie. panel fitter input size)
 426          * All planes will be positioned inside this space,
 427          * and get clipped at the edges. */
 428         int pipe_src_w, pipe_src_h;
 429
 430         /* Whether to set up the PCH/FDI. Note that we never allow sharing
 431          * between pch encoders and cpu encoders. */
 432         bool has_pch_encoder;
 433
 434         /* Are we sending infoframes on the attached port */
 435         bool has_infoframe;
 436
 437         /* CPU Transcoder for the pipe. Currently this can only differ from the
 438          * pipe on Haswell (where we have a special eDP transcoder). */
 439         enum transcoder cpu_transcoder;
 440
 441         /*
 442          * Use reduced/limited/broadcast rbg range, compressing from the full
 443          * range fed into the crtcs.
 444          */
 445         bool limited_color_range;
 446
 447         /* DP has a bunch of special case unfortunately, so mark the pipe
 448          * accordingly. */
 449         bool has_dp_encoder;
 450
 451         /* DSI has special cases */
 452         bool has_dsi_encoder;
 453
 454         /* Whether we should send NULL infoframes. Required for audio. */
 455         bool has_hdmi_sink;
 456
 457         /* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
 458          * has_dp_encoder is set. */
 459         bool has_audio;
 460
 461         /*
 462          * Enable dithering, used when the selected pipe bpp doesn't match the
 463          * plane bpp.
 464          */
 465         bool dither;
 466
 467         /* Controls for the clock computation, to override various stages. */
 468         bool clock_set;
 469
 470         /* SDVO TV has a bunch of special case. To make multifunction encoders
 471          * work correctly, we need to track this at runtime.*/
 472         bool sdvo_tv_clock;
 473
 474         /*
 475          * crtc bandwidth limit, don't increase pipe bpp or clock if not really
 476          * required. This is set in the 2nd loop of calling encoder's
 477          * ->compute_config if the first pick doesn't work out.
 478          */
 479         bool bw_constrained;
 480
 481         /* Settings for the intel dpll used on pretty much everything but
 482          * haswell. */
 483         struct dpll dpll;
 484
 485         /* Selected dpll when shared or DPLL_ID_PRIVATE. */
 486         enum intel_dpll_id shared_dpll;
 487
 488         /*
 489          * - PORT_CLK_SEL for DDI ports on HSW/BDW.
 490          * - enum skl_dpll on SKL
 491          */
 492         uint32_t ddi_pll_sel;
 493
 494         /* Actual register state of the dpll, for shared dpll cross-checking. */
 495         struct intel_dpll_hw_state dpll_hw_state;
 496
 497         int pipe_bpp;
 498         struct intel_link_m_n dp_m_n;
 499
 500         /* m2_n2 for eDP downclock */
 501         struct intel_link_m_n dp_m2_n2;
 502         bool has_drrs;
 503
 504         /*
 505          * Frequence the dpll for the port should run at. Differs from the
 506          * adjusted dotclock e.g. for DP or 12bpc hdmi mode. This is also
 507          * already multiplied by pixel_multiplier.
 508          */
 509         int port_clock;
 510
 511         /* Used by SDVO (and if we ever fix it, HDMI). */
 512         unsigned pixel_multiplier;
 513
 514         uint8_t lane_count;
 515
 516         /* Panel fitter controls for gen2-gen4 + VLV */
 517         struct {
 518                 u32 control;
 519                 u32 pgm_ratios;
 520                 u32 lvds_border_bits;
 521         } gmch_pfit;
 522
 523         /* Panel fitter placement and size for Ironlake+ */
 524         struct {
 525                 u32 pos;
 526                 u32 size;
 527                 bool enabled;
 528                 bool force_thru;
 529         } pch_pfit;
 530
 531         /* FDI configuration, only valid if has_pch_encoder is set. */
 532         int fdi_lanes;
 533         struct intel_link_m_n fdi_m_n;
 534
 535         bool ips_enabled;
 536
 537         bool enable_fbc;
 538
 539         bool double_wide;
 540
 541         bool dp_encoder_is_mst;
 542         int pbn;
 543
 544         struct intel_crtc_scaler_state scaler_state;
 545
 546         /* w/a for waiting 2 vblanks during crtc enable */
 547         enum pipe hsw_workaround_pipe;
 548
 549         /* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
 550         bool disable_lp_wm;
 551
 552         struct {
 553                 /*
 554                  * Optimal watermarks, programmed post-vblank when this state
 555                  * is committed.
 556                  */
 557                 union {
 558                         struct intel_pipe_wm ilk;
 559                         struct skl_pipe_wm skl;
 560                 } optimal;
 561
 562                 /*
 563                  * Intermediate watermarks; these can be programmed immediately
 564                  * since they satisfy both the current configuration we're
 565                  * switching away from and the new configuration we're switching
 566                  * to.
 567                  */
 568                 struct intel_pipe_wm intermediate;
 569
 570                 /*
 571                  * Platforms with two-step watermark programming will need to
 572                  * update watermark programming post-vblank to switch from the
 573                  * safe intermediate watermarks to the optimal final
 574                  * watermarks.
 575                  */
 576                 bool need_postvbl_update;
 577         } wm;
 578 };
 579
 580 struct vlv_wm_state {
 581         struct vlv_pipe_wm wm[3];
 582         struct vlv_sr_wm sr[3];
 583         uint8_t num_active_planes;
 584         uint8_t num_levels;
 585         uint8_t level;
 586         bool cxsr;
 587 };
 588
 589 struct intel_mmio_flip {
 590         struct work_struct work;
 591         struct drm_i915_private *i915;
 592         struct drm_i915_gem_request *req;
 593         struct intel_crtc *crtc;
 594         unsigned int rotation;
 595 };
 596
 597 /*
 598  * Tracking of operations that need to be performed at the beginning/end of an
 599  * atomic commit, outside the atomic section where interrupts are disabled.
 600  * These are generally operations that grab mutexes or might otherwise sleep
 601  * and thus can't be run with interrupts disabled.
 602  */
 603 struct intel_crtc_atomic_commit {
 604         /* Sleepable operations to perform before commit */
 605
 606         /* Sleepable operations to perform after commit */
 607         unsigned fb_bits;
 608         bool post_enable_primary;
 609
 610         /* Sleepable operations to perform before and after commit */
 611         bool update_fbc;
 612 };
 613
 614 struct intel_crtc {
 615         struct drm_crtc base;
 616         enum pipe pipe;
 617         enum plane plane;
 618         u8 lut_r[256], lut_g[256], lut_b[256];
 619         /*
 620          * Whether the crtc and the connected output pipeline is active. Implies
 621          * that crtc->enabled is set, i.e. the current mode configuration has
 622          * some outputs connected to this crtc.
 623          */
 624         bool active;
 625         unsigned long enabled_power_domains;
 626         bool lowfreq_avail;
 627         struct intel_overlay *overlay;
 628         struct intel_unpin_work *unpin_work;
 629
 630         atomic_t unpin_work_count;
 631
 632         /* Display surface base address adjustement for pageflips. Note that on
 633          * gen4+ this only adjusts up to a tile, offsets within a tile are
 634          * handled in the hw itself (with the TILEOFF register). */
 635         u32 dspaddr_offset;
 636         int adjusted_x;
 637         int adjusted_y;
 638
 639         uint32_t cursor_addr;
 640         uint32_t cursor_cntl;
 641         uint32_t cursor_size;
 642         uint32_t cursor_base;
 643
 644         struct intel_crtc_state *config;
 645
 646         /* reset counter value when the last flip was submitted */
 647         unsigned int reset_counter;
 648
 649         /* Access to these should be protected by dev_priv->irq_lock. */
 650         bool cpu_fifo_underrun_disabled;
 651         bool pch_fifo_underrun_disabled;
 652
 653         /* per-pipe watermark state */
 654         struct {
 655                 /* watermarks currently being used  */
 656                 union {
 657                         struct intel_pipe_wm ilk;
 658                         struct skl_pipe_wm skl;
 659                 } active;
 660
 661                 /* allow CxSR on this pipe */
 662                 bool cxsr_allowed;
 663         } wm;
 664
 665         int scanline_offset;
 666
 667         struct {
 668                 unsigned start_vbl_count;
 669                 ktime_t start_vbl_time;
 670                 int min_vbl, max_vbl;
 671                 int scanline_start;
 672         } debug;
 673
 674         struct intel_crtc_atomic_commit atomic;
 675
 676         /* scalers available on this crtc */
 677         int num_scalers;
 678
 679         struct vlv_wm_state wm_state;
 680 };
 681
 682 struct intel_plane_wm_parameters {
 683         uint32_t horiz_pixels;
 684         uint32_t vert_pixels;
 685         /*
 686          *   For packed pixel formats:
 687          *     bytes_per_pixel - holds bytes per pixel
 688          *   For planar pixel formats:
 689          *     bytes_per_pixel - holds bytes per pixel for uv-plane
 690          *     y_bytes_per_pixel - holds bytes per pixel for y-plane
 691          */
 692         uint8_t bytes_per_pixel;
 693         uint8_t y_bytes_per_pixel;
 694         bool enabled;
 695         bool scaled;
 696         u64 tiling;
 697         unsigned int rotation;
 698         uint16_t fifo_size;
 699 };
 700
 701 struct intel_plane {
 702         struct drm_plane base;
 703         int plane;
 704         enum pipe pipe;
 705         bool can_scale;
 706         int max_downscale;
 707         uint32_t frontbuffer_bit;
 708
 709         /* Since we need to change the watermarks before/after
 710          * enabling/disabling the planes, we need to store the parameters here
 711          * as the other pieces of the struct may not reflect the values we want
 712          * for the watermark calculations. Currently only Haswell uses this.
 713          */
 714         struct intel_plane_wm_parameters wm;
 715
 716         /*
 717          * NOTE: Do not place new plane state fields here (e.g., when adding
 718          * new plane properties).  New runtime state should now be placed in
 719          * the intel_plane_state structure and accessed via plane_state.
 720          */
 721
 722         void (*update_plane)(struct drm_plane *plane,
 723                              const struct intel_crtc_state *crtc_state,
 724                              const struct intel_plane_state *plane_state);
 725         void (*disable_plane)(struct drm_plane *plane,
 726                               struct drm_crtc *crtc);
 727         int (*check_plane)(struct drm_plane *plane,
 728                            struct intel_crtc_state *crtc_state,
 729                            struct intel_plane_state *state);
 730 };
 731
 732 struct intel_watermark_params {
 733         unsigned long fifo_size;
 734         unsigned long max_wm;
 735         unsigned long default_wm;
 736         unsigned long guard_size;
 737         unsigned long cacheline_size;
 738 };
 739
 740 struct cxsr_latency {
 741         int is_desktop;
 742         int is_ddr3;
 743         unsigned long fsb_freq;
 744         unsigned long mem_freq;
 745         unsigned long display_sr;
 746         unsigned long display_hpll_disable;
 747         unsigned long cursor_sr;
 748         unsigned long cursor_hpll_disable;
 749 };
 750
 751 #define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
 752 #define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
 753 #define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, base)
 754 #define to_intel_connector(x) container_of(x, struct intel_connector, base)
 755 #define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
 756 #define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
 757 #define to_intel_plane(x) container_of(x, struct intel_plane, base)
 758 #define to_intel_plane_state(x) container_of(x, struct intel_plane_state, base)
 759 #define intel_fb_obj(x) (x ? to_intel_framebuffer(x)->obj : NULL)
 760
 761 struct intel_hdmi {
 762         i915_reg_t hdmi_reg;
 763         int ddc_bus;
 764         bool limited_color_range;
 765         bool color_range_auto;
 766         bool has_hdmi_sink;
 767         bool has_audio;
 768         enum hdmi_force_audio force_audio;
 769         bool rgb_quant_range_selectable;
 770         enum hdmi_picture_aspect aspect_ratio;
 771         struct intel_connector *attached_connector;
 772         void (*write_infoframe)(struct drm_encoder *encoder,
 773                                 enum hdmi_infoframe_type type,
 774                                 const void *frame, ssize_t len);
 775         void (*set_infoframes)(struct drm_encoder *encoder,
 776                                bool enable,
 777                                const struct drm_display_mode *adjusted_mode);
 778         bool (*infoframe_enabled)(struct drm_encoder *encoder,
 779                                   const struct intel_crtc_state *pipe_config);
 780 };
 781
 782 struct intel_dp_mst_encoder;
 783 #define DP_MAX_DOWNSTREAM_PORTS         0x10
 784
 785 /*
 786  * enum link_m_n_set:
 787  *      When platform provides two set of M_N registers for dp, we can
 788  *      program them and switch between them incase of DRRS.
 789  *      But When only one such register is provided, we have to program the
 790  *      required divider value on that registers itself based on the DRRS state.
 791  *
 792  * M1_N1        : Program dp_m_n on M1_N1 registers
 793  *                        dp_m2_n2 on M2_N2 registers (If supported)
 794  *
 795  * M2_N2        : Program dp_m2_n2 on M1_N1 registers
 796  *                        M2_N2 registers are not supported
 797  */
 798
 799 enum link_m_n_set {
 800         /* Sets the m1_n1 and m2_n2 */
 801         M1_N1 = 0,
 802         M2_N2
 803 };
 804
 805 struct intel_dp {
 806         i915_reg_t output_reg;
 807         i915_reg_t aux_ch_ctl_reg;
 808         i915_reg_t aux_ch_data_reg[5];
 809         uint32_t DP;
 810         int link_rate;
 811         uint8_t lane_count;
 812         bool has_audio;
 813         enum hdmi_force_audio force_audio;
 814         bool limited_color_range;
 815         bool color_range_auto;
 816         uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
 817         uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
 818         uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
 819         /* sink rates as reported by DP_SUPPORTED_LINK_RATES */
 820         uint8_t num_sink_rates;
 821         int sink_rates[DP_MAX_SUPPORTED_RATES];
 822         struct drm_dp_aux aux;
 823         uint8_t train_set[4];
 824         int panel_power_up_delay;
 825         int panel_power_down_delay;
 826         int panel_power_cycle_delay;
 827         int backlight_on_delay;
 828         int backlight_off_delay;
 829         struct delayed_work panel_vdd_work;
 830         bool want_panel_vdd;
 831         unsigned long last_power_on;
 832         unsigned long last_backlight_off;
 833         ktime_t panel_power_off_time;
 834
 835         struct notifier_block edp_notifier;
 836
 837         /*
 838          * Pipe whose power sequencer is currently locked into
 839          * this port. Only relevant on VLV/CHV.
 840          */
 841         enum pipe pps_pipe;
 842         struct edp_power_seq pps_delays;
 843
 844         bool can_mst; /* this port supports mst */
 845         bool is_mst;
 846         int active_mst_links;
 847         /* connector directly attached - won't be use for modeset in mst world */
 848         struct intel_connector *attached_connector;
 849
 850         /* mst connector list */
 851         struct intel_dp_mst_encoder *mst_encoders[I915_MAX_PIPES];
 852         struct drm_dp_mst_topology_mgr mst_mgr;
 853
 854         uint32_t (*get_aux_clock_divider)(struct intel_dp *dp, int index);
 855         /*
 856          * This function returns the value we have to program the AUX_CTL
 857          * register with to kick off an AUX transaction.
 858          */
 859         uint32_t (*get_aux_send_ctl)(struct intel_dp *dp,
 860                                      bool has_aux_irq,
 861                                      int send_bytes,
 862                                      uint32_t aux_clock_divider);
 863
 864         /* This is called before a link training is starterd */
 865         void (*prepare_link_retrain)(struct intel_dp *intel_dp);
 866
 867         bool train_set_valid;
 868
 869         /* Displayport compliance testing */
 870         unsigned long compliance_test_type;
 871         unsigned long compliance_test_data;
 872         bool compliance_test_active;
 873 };
 874
 875 struct intel_digital_port {
 876         struct intel_encoder base;
 877         enum port port;
 878         u32 saved_port_bits;
 879         struct intel_dp dp;
 880         struct intel_hdmi hdmi;
 881         enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
 882         bool release_cl2_override;
 883         uint8_t max_lanes;
 884         /* for communication with audio component; protected by av_mutex */
 885         const struct drm_connector *audio_connector;
 886 };
 887
 888 struct intel_dp_mst_encoder {
 889         struct intel_encoder base;
 890         enum pipe pipe;
 891         struct intel_digital_port *primary;
 892         void *port; /* store this opaque as its illegal to dereference it */
 893 };
 894
 895 static inline enum dpio_channel
 896 vlv_dport_to_channel(struct intel_digital_port *dport)
 897 {
 898         switch (dport->port) {
 899         case PORT_B:
 900         case PORT_D:
 901                 return DPIO_CH0;
 902         case PORT_C:
 903                 return DPIO_CH1;
 904         default:
 905                 BUG();
 906         }
 907 }
 908
 909 static inline enum dpio_phy
 910 vlv_dport_to_phy(struct intel_digital_port *dport)
 911 {
 912         switch (dport->port) {
 913         case PORT_B:
 914         case PORT_C:
 915                 return DPIO_PHY0;
 916         case PORT_D:
 917                 return DPIO_PHY1;
 918         default:
 919                 BUG();
 920         }
 921 }
 922
 923 static inline enum dpio_channel
 924 vlv_pipe_to_channel(enum pipe pipe)
 925 {
 926         switch (pipe) {
 927         case PIPE_A:
 928         case PIPE_C:
 929                 return DPIO_CH0;
 930         case PIPE_B:
 931                 return DPIO_CH1;
 932         default:
 933                 BUG();
 934         }
 935 }
 936
 937 static inline struct drm_crtc *
 938 intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
 939 {
 940         struct drm_i915_private *dev_priv = dev->dev_private;
 941         return dev_priv->pipe_to_crtc_mapping[pipe];
 942 }
 943
 944 static inline struct drm_crtc *
 945 intel_get_crtc_for_plane(struct drm_device *dev, int plane)
 946 {
 947         struct drm_i915_private *dev_priv = dev->dev_private;
 948         return dev_priv->plane_to_crtc_mapping[plane];
 949 }
 950
 951 struct intel_unpin_work {
 952         struct work_struct work;
 953         struct drm_crtc *crtc;
 954         struct drm_framebuffer *old_fb;
 955         struct drm_i915_gem_object *pending_flip_obj;
 956         struct drm_pending_vblank_event *event;
 957         atomic_t pending;
 958 #define INTEL_FLIP_INACTIVE     0
 959 #define INTEL_FLIP_PENDING      1
 960 #define INTEL_FLIP_COMPLETE     2
 961         u32 flip_count;
 962         u32 gtt_offset;
 963         struct drm_i915_gem_request *flip_queued_req;
 964         u32 flip_queued_vblank;
 965         u32 flip_ready_vblank;
 966         bool enable_stall_check;
 967 };
 968
 969 struct intel_load_detect_pipe {
 970         struct drm_atomic_state *restore_state;
 971 };
 972
 973 static inline struct intel_encoder *
 974 intel_attached_encoder(struct drm_connector *connector)
 975 {
 976         return to_intel_connector(connector)->encoder;
 977 }
 978
 979 static inline struct intel_digital_port *
 980 enc_to_dig_port(struct drm_encoder *encoder)
 981 {
 982         return container_of(encoder, struct intel_digital_port, base.base);
 983 }
 984
 985 static inline struct intel_dp_mst_encoder *
 986 enc_to_mst(struct drm_encoder *encoder)
 987 {
 988         return container_of(encoder, struct intel_dp_mst_encoder, base.base);
 989 }
 990
 991 static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
 992 {
 993         return &enc_to_dig_port(encoder)->dp;
 994 }
 995
 996 static inline struct intel_digital_port *
 997 dp_to_dig_port(struct intel_dp *intel_dp)
 998 {
 999         return container_of(intel_dp, struct intel_digital_port, dp);
1000 }
1001
1002 static inline struct intel_digital_port *
1003 hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
1004 {
1005         return container_of(intel_hdmi, struct intel_digital_port, hdmi);
1006 }
1007
1008 /*
1009  * Returns the number of planes for this pipe, ie the number of sprites + 1
1010  * (primary plane). This doesn't count the cursor plane then.
1011  */
1012 static inline unsigned int intel_num_planes(struct intel_crtc *crtc)
1013 {
1014         return INTEL_INFO(crtc->base.dev)->num_sprites[crtc->pipe] + 1;
1015 }
1016
1017 /* intel_fifo_underrun.c */
1018 bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1019                                            enum pipe pipe, bool enable);
1020 bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1021                                            enum transcoder pch_transcoder,
1022                                            bool enable);
1023 void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1024                                          enum pipe pipe);
1025 void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1026                                          enum transcoder pch_transcoder);
1027 void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
1028 void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
1029
1030 /* i915_irq.c */
1031 void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1032 void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1033 void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1034 void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1035 void gen6_reset_rps_interrupts(struct drm_device *dev);
1036 void gen6_enable_rps_interrupts(struct drm_device *dev);
1037 void gen6_disable_rps_interrupts(struct drm_device *dev);
1038 u32 gen6_sanitize_rps_pm_mask(struct drm_i915_private *dev_priv, u32 mask);
1039 void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
1040 void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
1041 static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
1042 {
1043         /*
1044          * We only use drm_irq_uninstall() at unload and VT switch, so
1045          * this is the only thing we need to check.
1046          */
1047         return dev_priv->pm.irqs_enabled;
1048 }
1049
1050 int intel_get_crtc_scanline(struct intel_crtc *crtc);
1051 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
1052                                      unsigned int pipe_mask);
1053 void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
1054                                      unsigned int pipe_mask);
1055
1056 /* intel_crt.c */
1057 void intel_crt_init(struct drm_device *dev);
1058
1059
1060 /* intel_ddi.c */
1061 void intel_ddi_clk_select(struct intel_encoder *encoder,
1062                           const struct intel_crtc_state *pipe_config);
1063 void intel_prepare_ddi_buffer(struct intel_encoder *encoder);
1064 void hsw_fdi_link_train(struct drm_crtc *crtc);
1065 void intel_ddi_init(struct drm_device *dev, enum port port);
1066 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
1067 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
1068 void intel_ddi_pll_init(struct drm_device *dev);
1069 void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
1070 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1071                                        enum transcoder cpu_transcoder);
1072 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
1073 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
1074 bool intel_ddi_pll_select(struct intel_crtc *crtc,
1075                           struct intel_crtc_state *crtc_state);
1076 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
1077 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
1078 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
1079 void intel_ddi_fdi_disable(struct drm_crtc *crtc);
1080 bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
1081                                  struct intel_crtc *intel_crtc);
1082 void intel_ddi_get_config(struct intel_encoder *encoder,
1083                           struct intel_crtc_state *pipe_config);
1084 struct intel_encoder *
1085 intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
1086
1087 void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
1088 void intel_ddi_clock_get(struct intel_encoder *encoder,
1089                          struct intel_crtc_state *pipe_config);
1090 void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
1091 uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
1092
1093 /* intel_frontbuffer.c */
1094 void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
1095                              enum fb_op_origin origin);
1096 void intel_frontbuffer_flip_prepare(struct drm_device *dev,
1097                                     unsigned frontbuffer_bits);
1098 void intel_frontbuffer_flip_complete(struct drm_device *dev,
1099                                      unsigned frontbuffer_bits);
1100 void intel_frontbuffer_flip(struct drm_device *dev,
1101                             unsigned frontbuffer_bits);
1102 unsigned int intel_fb_align_height(struct drm_device *dev,
1103                                    unsigned int height,
1104                                    uint32_t pixel_format,
1105                                    uint64_t fb_format_modifier);
1106 void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire,
1107                         enum fb_op_origin origin);
1108 u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
1109                               uint64_t fb_modifier, uint32_t pixel_format);
1110
1111 /* intel_audio.c */
1112 void intel_init_audio(struct drm_device *dev);
1113 void intel_audio_codec_enable(struct intel_encoder *encoder);
1114 void intel_audio_codec_disable(struct intel_encoder *encoder);
1115 void i915_audio_component_init(struct drm_i915_private *dev_priv);
1116 void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
1117
1118 /* intel_display.c */
1119 extern const struct drm_plane_funcs intel_plane_funcs;
1120 unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
1121 bool intel_has_pending_fb_unpin(struct drm_device *dev);
1122 void intel_mark_busy(struct drm_device *dev);
1123 void intel_mark_idle(struct drm_device *dev);
1124 void intel_crtc_restore_mode(struct drm_crtc *crtc);
1125 int intel_display_suspend(struct drm_device *dev);
1126 void intel_encoder_destroy(struct drm_encoder *encoder);
1127 int intel_connector_init(struct intel_connector *);
1128 struct intel_connector *intel_connector_alloc(void);
1129 bool intel_connector_get_hw_state(struct intel_connector *connector);
1130 void intel_connector_attach_encoder(struct intel_connector *connector,
1131                                     struct intel_encoder *encoder);
1132 struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
1133 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
1134                                              struct drm_crtc *crtc);
1135 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
1136 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
1137                                 struct drm_file *file_priv);
1138 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1139                                              enum pipe pipe);
1140 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type);
1141 static inline void
1142 intel_wait_for_vblank(struct drm_device *dev, int pipe)
1143 {
1144         drm_wait_one_vblank(dev, pipe);
1145 }
1146 static inline void
1147 intel_wait_for_vblank_if_active(struct drm_device *dev, int pipe)
1148 {
1149         const struct intel_crtc *crtc =
1150                 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
1151
1152         if (crtc->active)
1153                 intel_wait_for_vblank(dev, pipe);
1154 }
1155 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
1156 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1157                          struct intel_digital_port *dport,
1158                          unsigned int expected_mask);
1159 bool intel_get_load_detect_pipe(struct drm_connector *connector,
1160                                 struct drm_display_mode *mode,
1161                                 struct intel_load_detect_pipe *old,
1162                                 struct drm_modeset_acquire_ctx *ctx);
1163 void intel_release_load_detect_pipe(struct drm_connector *connector,
1164                                     struct intel_load_detect_pipe *old,
1165                                     struct drm_modeset_acquire_ctx *ctx);
1166 int intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
1167                                unsigned int rotation);
1168 struct drm_framebuffer *
1169 __intel_framebuffer_create(struct drm_device *dev,
1170                            struct drm_mode_fb_cmd2 *mode_cmd,
1171                            struct drm_i915_gem_object *obj);
1172 void intel_prepare_page_flip(struct drm_device *dev, int plane);
1173 void intel_finish_page_flip(struct drm_device *dev, int pipe);
1174 void intel_finish_page_flip_plane(struct drm_device *dev, int plane);
1175 void intel_check_page_flip(struct drm_device *dev, int pipe);
1176 int intel_prepare_plane_fb(struct drm_plane *plane,
1177                            const struct drm_plane_state *new_state);
1178 void intel_cleanup_plane_fb(struct drm_plane *plane,
1179                             const struct drm_plane_state *old_state);
1180 int intel_plane_atomic_get_property(struct drm_plane *plane,
1181                                     const struct drm_plane_state *state,
1182                                     struct drm_property *property,
1183                                     uint64_t *val);
1184 int intel_plane_atomic_set_property(struct drm_plane *plane,
1185                                     struct drm_plane_state *state,
1186                                     struct drm_property *property,
1187                                     uint64_t val);
1188 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
1189                                     struct drm_plane_state *plane_state);
1190
1191 unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
1192                                uint64_t fb_modifier, unsigned int cpp);
1193
1194 static inline bool
1195 intel_rotation_90_or_270(unsigned int rotation)
1196 {
1197         return rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270));
1198 }
1199
1200 void intel_create_rotation_property(struct drm_device *dev,
1201                                         struct intel_plane *plane);
1202
1203 /* shared dpll functions */
1204 struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
1205 void assert_shared_dpll(struct drm_i915_private *dev_priv,
1206                         struct intel_shared_dpll *pll,
1207                         bool state);
1208 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
1209 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
1210 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
1211                                                 struct intel_crtc_state *state);
1212
1213 int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
1214                      const struct dpll *dpll);
1215 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe);
1216 int lpt_get_iclkip(struct drm_i915_private *dev_priv);
1217
1218 /* modesetting asserts */
1219 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1220                            enum pipe pipe);
1221 void assert_pll(struct drm_i915_private *dev_priv,
1222                 enum pipe pipe, bool state);
1223 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
1224 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
1225 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1226                        enum pipe pipe, bool state);
1227 #define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
1228 #define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
1229 void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
1230 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
1231 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
1232 u32 intel_compute_tile_offset(int *x, int *y,
1233                               const struct drm_framebuffer *fb, int plane,
1234                               unsigned int pitch,
1235                               unsigned int rotation);
1236 void intel_prepare_reset(struct drm_device *dev);
1237 void intel_finish_reset(struct drm_device *dev);
1238 void hsw_enable_pc8(struct drm_i915_private *dev_priv);
1239 void hsw_disable_pc8(struct drm_i915_private *dev_priv);
1240 void broxton_init_cdclk(struct drm_device *dev);
1241 void broxton_uninit_cdclk(struct drm_device *dev);
1242 void broxton_ddi_phy_init(struct drm_device *dev);
1243 void broxton_ddi_phy_uninit(struct drm_device *dev);
1244 void bxt_enable_dc9(struct drm_i915_private *dev_priv);
1245 void bxt_disable_dc9(struct drm_i915_private *dev_priv);
1246 void skl_init_cdclk(struct drm_i915_private *dev_priv);
1247 int skl_sanitize_cdclk(struct drm_i915_private *dev_priv);
1248 void skl_uninit_cdclk(struct drm_i915_private *dev_priv);
1249 void skl_enable_dc6(struct drm_i915_private *dev_priv);
1250 void skl_disable_dc6(struct drm_i915_private *dev_priv);
1251 void intel_dp_get_m_n(struct intel_crtc *crtc,
1252                       struct intel_crtc_state *pipe_config);
1253 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n);
1254 int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
1255 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1256                         intel_clock_t *best_clock);
1257 int chv_calc_dpll_params(int refclk, intel_clock_t *pll_clock);
1258
1259 bool intel_crtc_active(struct drm_crtc *crtc);
1260 void hsw_enable_ips(struct intel_crtc *crtc);
1261 void hsw_disable_ips(struct intel_crtc *crtc);
1262 enum intel_display_power_domain
1263 intel_display_port_power_domain(struct intel_encoder *intel_encoder);
1264 enum intel_display_power_domain
1265 intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder);
1266 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
1267                                  struct intel_crtc_state *pipe_config);
1268
1269 int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
1270 int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
1271
1272 u32 intel_plane_obj_offset(struct intel_plane *intel_plane,
1273                            struct drm_i915_gem_object *obj,
1274                            unsigned int plane);
1275
1276 u32 skl_plane_ctl_format(uint32_t pixel_format);
1277 u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
1278 u32 skl_plane_ctl_rotation(unsigned int rotation);
1279
1280 /* intel_csr.c */
1281 void intel_csr_ucode_init(struct drm_i915_private *);
1282 void intel_csr_load_program(struct drm_i915_private *);
1283 void intel_csr_ucode_fini(struct drm_i915_private *);
1284
1285 /* intel_dp.c */
1286 void intel_dp_init(struct drm_device *dev, i915_reg_t output_reg, enum port port);
1287 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
1288                              struct intel_connector *intel_connector);
1289 void intel_dp_set_link_params(struct intel_dp *intel_dp,
1290                               const struct intel_crtc_state *pipe_config);
1291 void intel_dp_start_link_train(struct intel_dp *intel_dp);
1292 void intel_dp_stop_link_train(struct intel_dp *intel_dp);
1293 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
1294 void intel_dp_encoder_destroy(struct drm_encoder *encoder);
1295 int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc);
1296 bool intel_dp_compute_config(struct intel_encoder *encoder,
1297                              struct intel_crtc_state *pipe_config);
1298 bool intel_dp_is_edp(struct drm_device *dev, enum port port);
1299 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
1300                                   bool long_hpd);
1301 void intel_edp_backlight_on(struct intel_dp *intel_dp);
1302 void intel_edp_backlight_off(struct intel_dp *intel_dp);
1303 void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
1304 void intel_edp_panel_on(struct intel_dp *intel_dp);
1305 void intel_edp_panel_off(struct intel_dp *intel_dp);
1306 void intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector);
1307 void intel_dp_mst_suspend(struct drm_device *dev);
1308 void intel_dp_mst_resume(struct drm_device *dev);
1309 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
1310 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
1311 void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
1312 void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv);
1313 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
1314 void intel_plane_destroy(struct drm_plane *plane);
1315 void intel_edp_drrs_enable(struct intel_dp *intel_dp);
1316 void intel_edp_drrs_disable(struct intel_dp *intel_dp);
1317 void intel_edp_drrs_invalidate(struct drm_device *dev,
1318                 unsigned frontbuffer_bits);
1319 void intel_edp_drrs_flush(struct drm_device *dev, unsigned frontbuffer_bits);
1320 bool intel_digital_port_connected(struct drm_i915_private *dev_priv,
1321                                          struct intel_digital_port *port);
1322 void hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config);
1323
1324 void
1325 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
1326                                        uint8_t dp_train_pat);
1327 void
1328 intel_dp_set_signal_levels(struct intel_dp *intel_dp);
1329 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
1330 uint8_t
1331 intel_dp_voltage_max(struct intel_dp *intel_dp);
1332 uint8_t
1333 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing);
1334 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
1335                            uint8_t *link_bw, uint8_t *rate_select);
1336 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);
1337 bool
1338 intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]);
1339
1340 /* intel_dp_mst.c */
1341 int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id);
1342 void intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port);
1343 /* intel_dsi.c */
1344 void intel_dsi_init(struct drm_device *dev);
1345
1346
1347 /* intel_dvo.c */
1348 void intel_dvo_init(struct drm_device *dev);
1349
1350
1351 /* legacy fbdev emulation in intel_fbdev.c */
1352 #ifdef CONFIG_DRM_FBDEV_EMULATION
1353 extern int intel_fbdev_init(struct drm_device *dev);
1354 extern void intel_fbdev_initial_config_async(struct drm_device *dev);
1355 extern void intel_fbdev_fini(struct drm_device *dev);
1356 extern void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
1357 extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
1358 extern void intel_fbdev_restore_mode(struct drm_device *dev);
1359 #else
1360 static inline int intel_fbdev_init(struct drm_device *dev)
1361 {
1362         return 0;
1363 }
1364
1365 static inline void intel_fbdev_initial_config_async(struct drm_device *dev)
1366 {
1367 }
1368
1369 static inline void intel_fbdev_fini(struct drm_device *dev)
1370 {
1371 }
1372
1373 static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
1374 {
1375 }
1376
1377 static inline void intel_fbdev_restore_mode(struct drm_device *dev)
1378 {
1379 }
1380 #endif
1381
1382 /* intel_fbc.c */
1383 void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
1384                            struct drm_atomic_state *state);
1385 bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
1386 void intel_fbc_pre_update(struct intel_crtc *crtc);
1387 void intel_fbc_post_update(struct intel_crtc *crtc);
1388 void intel_fbc_init(struct drm_i915_private *dev_priv);
1389 void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
1390 void intel_fbc_enable(struct intel_crtc *crtc);
1391 void intel_fbc_disable(struct intel_crtc *crtc);
1392 void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
1393 void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
1394                           unsigned int frontbuffer_bits,
1395                           enum fb_op_origin origin);
1396 void intel_fbc_flush(struct drm_i915_private *dev_priv,
1397                      unsigned int frontbuffer_bits, enum fb_op_origin origin);
1398 void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv);
1399
1400 /* intel_hdmi.c */
1401 void intel_hdmi_init(struct drm_device *dev, i915_reg_t hdmi_reg, enum port port);
1402 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1403                                struct intel_connector *intel_connector);
1404 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
1405 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1406                                struct intel_crtc_state *pipe_config);
1407
1408
1409 /* intel_lvds.c */
1410 void intel_lvds_init(struct drm_device *dev);
1411 bool intel_is_dual_link_lvds(struct drm_device *dev);
1412
1413
1414 /* intel_modes.c */
1415 int intel_connector_update_modes(struct drm_connector *connector,
1416                                  struct edid *edid);
1417 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
1418 void intel_attach_force_audio_property(struct drm_connector *connector);
1419 void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
1420 void intel_attach_aspect_ratio_property(struct drm_connector *connector);
1421
1422
1423 /* intel_overlay.c */
1424 void intel_setup_overlay(struct drm_device *dev);
1425 void intel_cleanup_overlay(struct drm_device *dev);
1426 int intel_overlay_switch_off(struct intel_overlay *overlay);
1427 int intel_overlay_put_image(struct drm_device *dev, void *data,
1428                             struct drm_file *file_priv);
1429 int intel_overlay_attrs(struct drm_device *dev, void *data,
1430                         struct drm_file *file_priv);
1431 void intel_overlay_reset(struct drm_i915_private *dev_priv);
1432
1433
1434 /* intel_panel.c */
1435 int intel_panel_init(struct intel_panel *panel,
1436                      struct drm_display_mode *fixed_mode,
1437                      struct drm_display_mode *downclock_mode);
1438 void intel_panel_fini(struct intel_panel *panel);
1439 void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
1440                             struct drm_display_mode *adjusted_mode);
1441 void intel_pch_panel_fitting(struct intel_crtc *crtc,
1442                              struct intel_crtc_state *pipe_config,
1443                              int fitting_mode);
1444 void intel_gmch_panel_fitting(struct intel_crtc *crtc,
1445                               struct intel_crtc_state *pipe_config,
1446                               int fitting_mode);
1447 void intel_panel_set_backlight_acpi(struct intel_connector *connector,
1448                                     u32 level, u32 max);
1449 int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe);
1450 void intel_panel_enable_backlight(struct intel_connector *connector);
1451 void intel_panel_disable_backlight(struct intel_connector *connector);
1452 void intel_panel_destroy_backlight(struct drm_connector *connector);
1453 enum drm_connector_status intel_panel_detect(struct drm_device *dev);
1454 extern struct drm_display_mode *intel_find_panel_downclock(
1455                                 struct drm_device *dev,
1456                                 struct drm_display_mode *fixed_mode,
1457                                 struct drm_connector *connector);
1458 void intel_backlight_register(struct drm_device *dev);
1459 void intel_backlight_unregister(struct drm_device *dev);
1460
1461
1462 /* intel_psr.c */
1463 void intel_psr_enable(struct intel_dp *intel_dp);
1464 void intel_psr_disable(struct intel_dp *intel_dp);
1465 void intel_psr_invalidate(struct drm_device *dev,
1466                           unsigned frontbuffer_bits);
1467 void intel_psr_flush(struct drm_device *dev,
1468                      unsigned frontbuffer_bits,
1469                      enum fb_op_origin origin);
1470 void intel_psr_init(struct drm_device *dev);
1471 void intel_psr_single_frame_update(struct drm_device *dev,
1472                                    unsigned frontbuffer_bits);
1473
1474 /* intel_runtime_pm.c */
1475 int intel_power_domains_init(struct drm_i915_private *);
1476 void intel_power_domains_fini(struct drm_i915_private *);
1477 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
1478 void intel_power_domains_suspend(struct drm_i915_private *dev_priv);
1479 void skl_pw1_misc_io_init(struct drm_i915_private *dev_priv);
1480 void skl_pw1_misc_io_fini(struct drm_i915_private *dev_priv);
1481 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
1482 const char *
1483 intel_display_power_domain_str(enum intel_display_power_domain domain);
1484
1485 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1486                                     enum intel_display_power_domain domain);
1487 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1488                                       enum intel_display_power_domain domain);
1489 void intel_display_power_get(struct drm_i915_private *dev_priv,
1490                              enum intel_display_power_domain domain);
1491 bool intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
1492                                         enum intel_display_power_domain domain);
1493 void intel_display_power_put(struct drm_i915_private *dev_priv,
1494                              enum intel_display_power_domain domain);
1495
1496 static inline void
1497 assert_rpm_device_not_suspended(struct drm_i915_private *dev_priv)
1498 {
1499         WARN_ONCE(dev_priv->pm.suspended,
1500                   "Device suspended during HW access\n");
1501 }
1502
1503 static inline void
1504 assert_rpm_wakelock_held(struct drm_i915_private *dev_priv)
1505 {
1506         assert_rpm_device_not_suspended(dev_priv);
1507         /* FIXME: Needs to be converted back to WARN_ONCE, but currently causes
1508          * too much noise. */
1509         if (!atomic_read(&dev_priv->pm.wakeref_count))
1510                 DRM_DEBUG_DRIVER("RPM wakelock ref not held during HW access");
1511 }
1512
1513 static inline int
1514 assert_rpm_atomic_begin(struct drm_i915_private *dev_priv)
1515 {
1516         int seq = atomic_read(&dev_priv->pm.atomic_seq);
1517
1518         assert_rpm_wakelock_held(dev_priv);
1519
1520         return seq;
1521 }
1522
1523 static inline void
1524 assert_rpm_atomic_end(struct drm_i915_private *dev_priv, int begin_seq)
1525 {
1526         WARN_ONCE(atomic_read(&dev_priv->pm.atomic_seq) != begin_seq,
1527                   "HW access outside of RPM atomic section\n");
1528 }
1529
1530 /**
1531  * disable_rpm_wakeref_asserts - disable the RPM assert checks
1532  * @dev_priv: i915 device instance
1533  *
1534  * This function disable asserts that check if we hold an RPM wakelock
1535  * reference, while keeping the device-not-suspended checks still enabled.
1536  * It's meant to be used only in special circumstances where our rule about
1537  * the wakelock refcount wrt. the device power state doesn't hold. According
1538  * to this rule at any point where we access the HW or want to keep the HW in
1539  * an active state we must hold an RPM wakelock reference acquired via one of
1540  * the intel_runtime_pm_get() helpers. Currently there are a few special spots
1541  * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
1542  * forcewake release timer, and the GPU RPS and hangcheck works. All other
1543  * users should avoid using this function.
1544  *
1545  * Any calls to this function must have a symmetric call to
1546  * enable_rpm_wakeref_asserts().
1547  */
1548 static inline void
1549 disable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1550 {
1551         atomic_inc(&dev_priv->pm.wakeref_count);
1552 }
1553
1554 /**
1555  * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
1556  * @dev_priv: i915 device instance
1557  *
1558  * This function re-enables the RPM assert checks after disabling them with
1559  * disable_rpm_wakeref_asserts. It's meant to be used only in special
1560  * circumstances otherwise its use should be avoided.
1561  *
1562  * Any calls to this function must have a symmetric call to
1563  * disable_rpm_wakeref_asserts().
1564  */
1565 static inline void
1566 enable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1567 {
1568         atomic_dec(&dev_priv->pm.wakeref_count);
1569 }
1570
1571 /* TODO: convert users of these to rely instead on proper RPM refcounting */
1572 #define DISABLE_RPM_WAKEREF_ASSERTS(dev_priv)   \
1573         disable_rpm_wakeref_asserts(dev_priv)
1574
1575 #define ENABLE_RPM_WAKEREF_ASSERTS(dev_priv)    \
1576         enable_rpm_wakeref_asserts(dev_priv)
1577
1578 void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
1579 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv);
1580 void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
1581 void intel_runtime_pm_put(struct drm_i915_private *dev_priv);
1582
1583 void intel_display_set_init_power(struct drm_i915_private *dev, bool enable);
1584
1585 void chv_phy_powergate_lanes(struct intel_encoder *encoder,
1586                              bool override, unsigned int mask);
1587 bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
1588                           enum dpio_channel ch, bool override);
1589
1590
1591 /* intel_pm.c */
1592 void intel_init_clock_gating(struct drm_device *dev);
1593 void intel_suspend_hw(struct drm_device *dev);
1594 int ilk_wm_max_level(const struct drm_device *dev);
1595 void intel_update_watermarks(struct drm_crtc *crtc);
1596 void intel_init_pm(struct drm_device *dev);
1597 void intel_pm_setup(struct drm_device *dev);
1598 void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
1599 void intel_gpu_ips_teardown(void);
1600 void intel_init_gt_powersave(struct drm_device *dev);
1601 void intel_cleanup_gt_powersave(struct drm_device *dev);
1602 void intel_enable_gt_powersave(struct drm_device *dev);
1603 void intel_disable_gt_powersave(struct drm_device *dev);
1604 void intel_suspend_gt_powersave(struct drm_device *dev);
1605 void intel_reset_gt_powersave(struct drm_device *dev);
1606 void gen6_update_ring_freq(struct drm_device *dev);
1607 void gen6_rps_busy(struct drm_i915_private *dev_priv);
1608 void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
1609 void gen6_rps_idle(struct drm_i915_private *dev_priv);
1610 void gen6_rps_boost(struct drm_i915_private *dev_priv,
1611                     struct intel_rps_client *rps,
1612                     unsigned long submitted);
1613 void intel_queue_rps_boost_for_request(struct drm_device *dev,
1614                                        struct drm_i915_gem_request *req);
1615 void vlv_wm_get_hw_state(struct drm_device *dev);
1616 void ilk_wm_get_hw_state(struct drm_device *dev);
1617 void skl_wm_get_hw_state(struct drm_device *dev);
1618 void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
1619                           struct skl_ddb_allocation *ddb /* out */);
1620 uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config);
1621 bool ilk_disable_lp_wm(struct drm_device *dev);
1622 int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6);
1623
1624 /* intel_sdvo.c */
1625 bool intel_sdvo_init(struct drm_device *dev,
1626                      i915_reg_t reg, enum port port);
1627
1628
1629 /* intel_sprite.c */
1630 int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
1631 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
1632                               struct drm_file *file_priv);
1633 void intel_pipe_update_start(struct intel_crtc *crtc);
1634 void intel_pipe_update_end(struct intel_crtc *crtc);
1635
1636 /* intel_tv.c */
1637 void intel_tv_init(struct drm_device *dev);
1638
1639 /* intel_atomic.c */
1640 int intel_connector_atomic_get_property(struct drm_connector *connector,
1641                                         const struct drm_connector_state *state,
1642                                         struct drm_property *property,
1643                                         uint64_t *val);
1644 struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
1645 void intel_crtc_destroy_state(struct drm_crtc *crtc,
1646                                struct drm_crtc_state *state);
1647 struct drm_atomic_state *intel_atomic_state_alloc(struct drm_device *dev);
1648 void intel_atomic_state_clear(struct drm_atomic_state *);
1649 struct intel_shared_dpll_config *
1650 intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s);
1651
1652 static inline struct intel_crtc_state *
1653 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
1654                             struct intel_crtc *crtc)
1655 {
1656         struct drm_crtc_state *crtc_state;
1657         crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
1658         if (IS_ERR(crtc_state))
1659                 return ERR_CAST(crtc_state);
1660
1661         return to_intel_crtc_state(crtc_state);
1662 }
1663
1664 static inline struct intel_plane_state *
1665 intel_atomic_get_existing_plane_state(struct drm_atomic_state *state,
1666                                       struct intel_plane *plane)
1667 {
1668         struct drm_plane_state *plane_state;
1669
1670         plane_state = drm_atomic_get_existing_plane_state(state, &plane->base);
1671
1672         return to_intel_plane_state(plane_state);
1673 }
1674
1675 int intel_atomic_setup_scalers(struct drm_device *dev,
1676         struct intel_crtc *intel_crtc,
1677         struct intel_crtc_state *crtc_state);
1678
1679 /* intel_atomic_plane.c */
1680 struct intel_plane_state *intel_create_plane_state(struct drm_plane *plane);
1681 struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
1682 void intel_plane_destroy_state(struct drm_plane *plane,
1683                                struct drm_plane_state *state);
1684 extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
1685
1686 #endif /* __INTEL_DRV_H__ */