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_dual_mode_helper.h>
  37 #include <drm/drm_dp_mst_helper.h>
  38 #include <drm/drm_rect.h>
  39 #include <drm/drm_atomic.h>
  40
  41 /**
  42  * _wait_for - magic (register) wait macro
  43  *
  44  * Does the right thing for modeset paths when run under kdgb or similar atomic
  45  * contexts. Note that it's important that we check the condition again after
  46  * having timed out, since the timeout could be due to preemption or similar and
  47  * we've never had a chance to check the condition before the timeout.
  48  *
  49  * TODO: When modesetting has fully transitioned to atomic, the below
  50  * drm_can_sleep() can be removed and in_atomic()/!in_atomic() asserts
  51  * added.
  52  */
  53 #define _wait_for(COND, US, W) ({ \
  54         unsigned long timeout__ = jiffies + usecs_to_jiffies(US) + 1;   \
  55         int ret__;                                                      \
  56         for (;;) {                                                      \
  57                 bool expired__ = time_after(jiffies, timeout__);        \
  58                 if (COND) {                                             \
  59                         ret__ = 0;                                      \
  60                         break;                                          \
  61                 }                                                       \
  62                 if (expired__) {                                        \
  63                         ret__ = -ETIMEDOUT;                             \
  64                         break;                                          \
  65                 }                                                       \
  66                 if ((W) && drm_can_sleep()) {                           \
  67                         usleep_range((W), (W)*2);                       \
  68                 } else {                                                \
  69                         cpu_relax();                                    \
  70                 }                                                       \
  71         }                                                               \
  72         ret__;                                                          \
  73 })
  74
  75 #define wait_for(COND, MS)              _wait_for((COND), (MS) * 1000, 1000)
  76
  77 /* If CONFIG_PREEMPT_COUNT is disabled, in_atomic() always reports false. */
  78 #if defined(CONFIG_DRM_I915_DEBUG) && defined(CONFIG_PREEMPT_COUNT)
  79 # define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) WARN_ON_ONCE((ATOMIC) && !in_atomic())
  80 #else
  81 # define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) do { } while (0)
  82 #endif
  83
  84 #define _wait_for_atomic(COND, US, ATOMIC) \
  85 ({ \
  86         int cpu, ret, timeout = (US) * 1000; \
  87         u64 base; \
  88         _WAIT_FOR_ATOMIC_CHECK(ATOMIC); \
  89         BUILD_BUG_ON((US) > 50000); \
  90         if (!(ATOMIC)) { \
  91                 preempt_disable(); \
  92                 cpu = smp_processor_id(); \
  93         } \
  94         base = local_clock(); \
  95         for (;;) { \
  96                 u64 now = local_clock(); \
  97                 if (!(ATOMIC)) \
  98                         preempt_enable(); \
  99                 if (COND) { \
 100                         ret = 0; \
 101                         break; \
 102                 } \
 103                 if (now - base >= timeout) { \
 104                         ret = -ETIMEDOUT; \
 105                         break; \
 106                 } \
 107                 cpu_relax(); \
 108                 if (!(ATOMIC)) { \
 109                         preempt_disable(); \
 110                         if (unlikely(cpu != smp_processor_id())) { \
 111                                 timeout -= now - base; \
 112                                 cpu = smp_processor_id(); \
 113                                 base = local_clock(); \
 114                         } \
 115                 } \
 116         } \
 117         ret; \
 118 })
 119
 120 #define wait_for_us(COND, US) \
 121 ({ \
 122         int ret__; \
 123         BUILD_BUG_ON(!__builtin_constant_p(US)); \
 124         if ((US) > 10) \
 125                 ret__ = _wait_for((COND), (US), 10); \
 126         else \
 127                 ret__ = _wait_for_atomic((COND), (US), 0); \
 128         ret__; \
 129 })
 130
 131 #define wait_for_atomic(COND, MS)       _wait_for_atomic((COND), (MS) * 1000, 1)
 132 #define wait_for_atomic_us(COND, US)    _wait_for_atomic((COND), (US), 1)
 133
 134 #define KHz(x) (1000 * (x))
 135 #define MHz(x) KHz(1000 * (x))
 136
 137 /*
 138  * Display related stuff
 139  */
 140
 141 /* store information about an Ixxx DVO */
 142 /* The i830->i865 use multiple DVOs with multiple i2cs */
 143 /* the i915, i945 have a single sDVO i2c bus - which is different */
 144 #define MAX_OUTPUTS 6
 145 /* maximum connectors per crtcs in the mode set */
 146
 147 /* Maximum cursor sizes */
 148 #define GEN2_CURSOR_WIDTH 64
 149 #define GEN2_CURSOR_HEIGHT 64
 150 #define MAX_CURSOR_WIDTH 256
 151 #define MAX_CURSOR_HEIGHT 256
 152
 153 #define INTEL_I2C_BUS_DVO 1
 154 #define INTEL_I2C_BUS_SDVO 2
 155
 156 /* these are outputs from the chip - integrated only
 157    external chips are via DVO or SDVO output */
 158 enum intel_output_type {
 159         INTEL_OUTPUT_UNUSED = 0,
 160         INTEL_OUTPUT_ANALOG = 1,
 161         INTEL_OUTPUT_DVO = 2,
 162         INTEL_OUTPUT_SDVO = 3,
 163         INTEL_OUTPUT_LVDS = 4,
 164         INTEL_OUTPUT_TVOUT = 5,
 165         INTEL_OUTPUT_HDMI = 6,
 166         INTEL_OUTPUT_DP = 7,
 167         INTEL_OUTPUT_EDP = 8,
 168         INTEL_OUTPUT_DSI = 9,
 169         INTEL_OUTPUT_UNKNOWN = 10,
 170         INTEL_OUTPUT_DP_MST = 11,
 171 };
 172
 173 #define INTEL_DVO_CHIP_NONE 0
 174 #define INTEL_DVO_CHIP_LVDS 1
 175 #define INTEL_DVO_CHIP_TMDS 2
 176 #define INTEL_DVO_CHIP_TVOUT 4
 177
 178 #define INTEL_DSI_VIDEO_MODE    0
 179 #define INTEL_DSI_COMMAND_MODE  1
 180
 181 struct intel_framebuffer {
 182         struct drm_framebuffer base;
 183         struct drm_i915_gem_object *obj;
 184         struct intel_rotation_info rot_info;
 185
 186         /* for each plane in the normal GTT view */
 187         struct {
 188                 unsigned int x, y;
 189         } normal[2];
 190         /* for each plane in the rotated GTT view */
 191         struct {
 192                 unsigned int x, y;
 193                 unsigned int pitch; /* pixels */
 194         } rotated[2];
 195 };
 196
 197 struct intel_fbdev {
 198         struct drm_fb_helper helper;
 199         struct intel_framebuffer *fb;
 200         struct i915_vma *vma;
 201         async_cookie_t cookie;
 202         int preferred_bpp;
 203 };
 204
 205 struct intel_encoder {
 206         struct drm_encoder base;
 207
 208         enum intel_output_type type;
 209         enum port port;
 210         unsigned int cloneable;
 211         void (*hot_plug)(struct intel_encoder *);
 212         bool (*compute_config)(struct intel_encoder *,
 213                                struct intel_crtc_state *,
 214                                struct drm_connector_state *);
 215         void (*pre_pll_enable)(struct intel_encoder *,
 216                                struct intel_crtc_state *,
 217                                struct drm_connector_state *);
 218         void (*pre_enable)(struct intel_encoder *,
 219                            struct intel_crtc_state *,
 220                            struct drm_connector_state *);
 221         void (*enable)(struct intel_encoder *,
 222                        struct intel_crtc_state *,
 223                        struct drm_connector_state *);
 224         void (*disable)(struct intel_encoder *,
 225                         struct intel_crtc_state *,
 226                         struct drm_connector_state *);
 227         void (*post_disable)(struct intel_encoder *,
 228                              struct intel_crtc_state *,
 229                              struct drm_connector_state *);
 230         void (*post_pll_disable)(struct intel_encoder *,
 231                                  struct intel_crtc_state *,
 232                                  struct drm_connector_state *);
 233         /* Read out the current hw state of this connector, returning true if
 234          * the encoder is active. If the encoder is enabled it also set the pipe
 235          * it is connected to in the pipe parameter. */
 236         bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
 237         /* Reconstructs the equivalent mode flags for the current hardware
 238          * state. This must be called _after_ display->get_pipe_config has
 239          * pre-filled the pipe config. Note that intel_encoder->base.crtc must
 240          * be set correctly before calling this function. */
 241         void (*get_config)(struct intel_encoder *,
 242                            struct intel_crtc_state *pipe_config);
 243         /*
 244          * Called during system suspend after all pending requests for the
 245          * encoder are flushed (for example for DP AUX transactions) and
 246          * device interrupts are disabled.
 247          */
 248         void (*suspend)(struct intel_encoder *);
 249         int crtc_mask;
 250         enum hpd_pin hpd_pin;
 251         /* for communication with audio component; protected by av_mutex */
 252         const struct drm_connector *audio_connector;
 253 };
 254
 255 struct intel_panel {
 256         struct drm_display_mode *fixed_mode;
 257         struct drm_display_mode *downclock_mode;
 258         int fitting_mode;
 259
 260         /* backlight */
 261         struct {
 262                 bool present;
 263                 u32 level;
 264                 u32 min;
 265                 u32 max;
 266                 bool enabled;
 267                 bool combination_mode;  /* gen 2/4 only */
 268                 bool active_low_pwm;
 269                 bool alternate_pwm_increment;   /* lpt+ */
 270
 271                 /* PWM chip */
 272                 bool util_pin_active_low;       /* bxt+ */
 273                 u8 controller;          /* bxt+ only */
 274                 struct pwm_device *pwm;
 275
 276                 struct backlight_device *device;
 277
 278                 /* Connector and platform specific backlight functions */
 279                 int (*setup)(struct intel_connector *connector, enum pipe pipe);
 280                 uint32_t (*get)(struct intel_connector *connector);
 281                 void (*set)(struct intel_connector *connector, uint32_t level);
 282                 void (*disable)(struct intel_connector *connector);
 283                 void (*enable)(struct intel_connector *connector);
 284                 uint32_t (*hz_to_pwm)(struct intel_connector *connector,
 285                                       uint32_t hz);
 286                 void (*power)(struct intel_connector *, bool enable);
 287         } backlight;
 288 };
 289
 290 struct intel_connector {
 291         struct drm_connector base;
 292         /*
 293          * The fixed encoder this connector is connected to.
 294          */
 295         struct intel_encoder *encoder;
 296
 297         /* Reads out the current hw, returning true if the connector is enabled
 298          * and active (i.e. dpms ON state). */
 299         bool (*get_hw_state)(struct intel_connector *);
 300
 301         /* Panel info for eDP and LVDS */
 302         struct intel_panel panel;
 303
 304         /* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
 305         struct edid *edid;
 306         struct edid *detect_edid;
 307
 308         /* since POLL and HPD connectors may use the same HPD line keep the native
 309            state of connector->polled in case hotplug storm detection changes it */
 310         u8 polled;
 311
 312         void *port; /* store this opaque as its illegal to dereference it */
 313
 314         struct intel_dp *mst_port;
 315 };
 316
 317 struct dpll {
 318         /* given values */
 319         int n;
 320         int m1, m2;
 321         int p1, p2;
 322         /* derived values */
 323         int     dot;
 324         int     vco;
 325         int     m;
 326         int     p;
 327 };
 328
 329 struct intel_atomic_state {
 330         struct drm_atomic_state base;
 331
 332         unsigned int cdclk;
 333
 334         /*
 335          * Calculated device cdclk, can be different from cdclk
 336          * only when all crtc's are DPMS off.
 337          */
 338         unsigned int dev_cdclk;
 339
 340         bool dpll_set, modeset;
 341
 342         /*
 343          * Does this transaction change the pipes that are active?  This mask
 344          * tracks which CRTC's have changed their active state at the end of
 345          * the transaction (not counting the temporary disable during modesets).
 346          * This mask should only be non-zero when intel_state->modeset is true,
 347          * but the converse is not necessarily true; simply changing a mode may
 348          * not flip the final active status of any CRTC's
 349          */
 350         unsigned int active_pipe_changes;
 351
 352         unsigned int active_crtcs;
 353         unsigned int min_pixclk[I915_MAX_PIPES];
 354
 355         /* SKL/KBL Only */
 356         unsigned int cdclk_pll_vco;
 357
 358         struct intel_shared_dpll_config shared_dpll[I915_NUM_PLLS];
 359
 360         /*
 361          * Current watermarks can't be trusted during hardware readout, so
 362          * don't bother calculating intermediate watermarks.
 363          */
 364         bool skip_intermediate_wm;
 365
 366         /* Gen9+ only */
 367         struct skl_wm_values wm_results;
 368 };
 369
 370 struct intel_plane_state {
 371         struct drm_plane_state base;
 372         struct drm_rect clip;
 373
 374         struct {
 375                 u32 offset;
 376                 int x, y;
 377         } main;
 378         struct {
 379                 u32 offset;
 380                 int x, y;
 381         } aux;
 382
 383         /*
 384          * scaler_id
 385          *    = -1 : not using a scaler
 386          *    >=  0 : using a scalers
 387          *
 388          * plane requiring a scaler:
 389          *   - During check_plane, its bit is set in
 390          *     crtc_state->scaler_state.scaler_users by calling helper function
 391          *     update_scaler_plane.
 392          *   - scaler_id indicates the scaler it got assigned.
 393          *
 394          * plane doesn't require a scaler:
 395          *   - this can happen when scaling is no more required or plane simply
 396          *     got disabled.
 397          *   - During check_plane, corresponding bit is reset in
 398          *     crtc_state->scaler_state.scaler_users by calling helper function
 399          *     update_scaler_plane.
 400          */
 401         int scaler_id;
 402
 403         struct drm_intel_sprite_colorkey ckey;
 404
 405         /* async flip related structures */
 406         struct drm_i915_gem_request *wait_req;
 407 };
 408
 409 struct intel_initial_plane_config {
 410         struct intel_framebuffer *fb;
 411         unsigned int tiling;
 412         int size;
 413         u32 base;
 414 };
 415
 416 #define SKL_MIN_SRC_W 8
 417 #define SKL_MAX_SRC_W 4096
 418 #define SKL_MIN_SRC_H 8
 419 #define SKL_MAX_SRC_H 4096
 420 #define SKL_MIN_DST_W 8
 421 #define SKL_MAX_DST_W 4096
 422 #define SKL_MIN_DST_H 8
 423 #define SKL_MAX_DST_H 4096
 424
 425 struct intel_scaler {
 426         int in_use;
 427         uint32_t mode;
 428 };
 429
 430 struct intel_crtc_scaler_state {
 431 #define SKL_NUM_SCALERS 2
 432         struct intel_scaler scalers[SKL_NUM_SCALERS];
 433
 434         /*
 435          * scaler_users: keeps track of users requesting scalers on this crtc.
 436          *
 437          *     If a bit is set, a user is using a scaler.
 438          *     Here user can be a plane or crtc as defined below:
 439          *       bits 0-30 - plane (bit position is index from drm_plane_index)
 440          *       bit 31    - crtc
 441          *
 442          * Instead of creating a new index to cover planes and crtc, using
 443          * existing drm_plane_index for planes which is well less than 31
 444          * planes and bit 31 for crtc. This should be fine to cover all
 445          * our platforms.
 446          *
 447          * intel_atomic_setup_scalers will setup available scalers to users
 448          * requesting scalers. It will gracefully fail if request exceeds
 449          * avilability.
 450          */
 451 #define SKL_CRTC_INDEX 31
 452         unsigned scaler_users;
 453
 454         /* scaler used by crtc for panel fitting purpose */
 455         int scaler_id;
 456 };
 457
 458 /* drm_mode->private_flags */
 459 #define I915_MODE_FLAG_INHERITED 1
 460
 461 struct intel_pipe_wm {
 462         struct intel_wm_level wm[5];
 463         struct intel_wm_level raw_wm[5];
 464         uint32_t linetime;
 465         bool fbc_wm_enabled;
 466         bool pipe_enabled;
 467         bool sprites_enabled;
 468         bool sprites_scaled;
 469 };
 470
 471 struct skl_pipe_wm {
 472         struct skl_wm_level wm[8];
 473         struct skl_wm_level trans_wm;
 474         uint32_t linetime;
 475 };
 476
 477 struct intel_crtc_wm_state {
 478         union {
 479                 struct {
 480                         /*
 481                          * Intermediate watermarks; these can be
 482                          * programmed immediately since they satisfy
 483                          * both the current configuration we're
 484                          * switching away from and the new
 485                          * configuration we're switching to.
 486                          */
 487                         struct intel_pipe_wm intermediate;
 488
 489                         /*
 490                          * Optimal watermarks, programmed post-vblank
 491                          * when this state is committed.
 492                          */
 493                         struct intel_pipe_wm optimal;
 494                 } ilk;
 495
 496                 struct {
 497                         /* gen9+ only needs 1-step wm programming */
 498                         struct skl_pipe_wm optimal;
 499
 500                         /* cached plane data rate */
 501                         unsigned plane_data_rate[I915_MAX_PLANES];
 502                         unsigned plane_y_data_rate[I915_MAX_PLANES];
 503
 504                         /* minimum block allocation */
 505                         uint16_t minimum_blocks[I915_MAX_PLANES];
 506                         uint16_t minimum_y_blocks[I915_MAX_PLANES];
 507                 } skl;
 508         };
 509
 510         /*
 511          * Platforms with two-step watermark programming will need to
 512          * update watermark programming post-vblank to switch from the
 513          * safe intermediate watermarks to the optimal final
 514          * watermarks.
 515          */
 516         bool need_postvbl_update;
 517 };
 518
 519 struct intel_crtc_state {
 520         struct drm_crtc_state base;
 521
 522         /**
 523          * quirks - bitfield with hw state readout quirks
 524          *
 525          * For various reasons the hw state readout code might not be able to
 526          * completely faithfully read out the current state. These cases are
 527          * tracked with quirk flags so that fastboot and state checker can act
 528          * accordingly.
 529          */
 530 #define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS       (1<<0) /* unreliable sync mode.flags */
 531         unsigned long quirks;
 532
 533         unsigned fb_bits; /* framebuffers to flip */
 534         bool update_pipe; /* can a fast modeset be performed? */
 535         bool disable_cxsr;
 536         bool update_wm_pre, update_wm_post; /* watermarks are updated */
 537         bool fb_changed; /* fb on any of the planes is changed */
 538
 539         /* Pipe source size (ie. panel fitter input size)
 540          * All planes will be positioned inside this space,
 541          * and get clipped at the edges. */
 542         int pipe_src_w, pipe_src_h;
 543
 544         /* Whether to set up the PCH/FDI. Note that we never allow sharing
 545          * between pch encoders and cpu encoders. */
 546         bool has_pch_encoder;
 547
 548         /* Are we sending infoframes on the attached port */
 549         bool has_infoframe;
 550
 551         /* CPU Transcoder for the pipe. Currently this can only differ from the
 552          * pipe on Haswell and later (where we have a special eDP transcoder)
 553          * and Broxton (where we have special DSI transcoders). */
 554         enum transcoder cpu_transcoder;
 555
 556         /*
 557          * Use reduced/limited/broadcast rbg range, compressing from the full
 558          * range fed into the crtcs.
 559          */
 560         bool limited_color_range;
 561
 562         /* Bitmask of encoder types (enum intel_output_type)
 563          * driven by the pipe.
 564          */
 565         unsigned int output_types;
 566
 567         /* Whether we should send NULL infoframes. Required for audio. */
 568         bool has_hdmi_sink;
 569
 570         /* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
 571          * has_dp_encoder is set. */
 572         bool has_audio;
 573
 574         /*
 575          * Enable dithering, used when the selected pipe bpp doesn't match the
 576          * plane bpp.
 577          */
 578         bool dither;
 579
 580         /* Controls for the clock computation, to override various stages. */
 581         bool clock_set;
 582
 583         /* SDVO TV has a bunch of special case. To make multifunction encoders
 584          * work correctly, we need to track this at runtime.*/
 585         bool sdvo_tv_clock;
 586
 587         /*
 588          * crtc bandwidth limit, don't increase pipe bpp or clock if not really
 589          * required. This is set in the 2nd loop of calling encoder's
 590          * ->compute_config if the first pick doesn't work out.
 591          */
 592         bool bw_constrained;
 593
 594         /* Settings for the intel dpll used on pretty much everything but
 595          * haswell. */
 596         struct dpll dpll;
 597
 598         /* Selected dpll when shared or NULL. */
 599         struct intel_shared_dpll *shared_dpll;
 600
 601         /* Actual register state of the dpll, for shared dpll cross-checking. */
 602         struct intel_dpll_hw_state dpll_hw_state;
 603
 604         /* DSI PLL registers */
 605         struct {
 606                 u32 ctrl, div;
 607         } dsi_pll;
 608
 609         int pipe_bpp;
 610         struct intel_link_m_n dp_m_n;
 611
 612         /* m2_n2 for eDP downclock */
 613         struct intel_link_m_n dp_m2_n2;
 614         bool has_drrs;
 615
 616         /*
 617          * Frequence the dpll for the port should run at. Differs from the
 618          * adjusted dotclock e.g. for DP or 12bpc hdmi mode. This is also
 619          * already multiplied by pixel_multiplier.
 620          */
 621         int port_clock;
 622
 623         /* Used by SDVO (and if we ever fix it, HDMI). */
 624         unsigned pixel_multiplier;
 625
 626         uint8_t lane_count;
 627
 628         /*
 629          * Used by platforms having DP/HDMI PHY with programmable lane
 630          * latency optimization.
 631          */
 632         uint8_t lane_lat_optim_mask;
 633
 634         /* Panel fitter controls for gen2-gen4 + VLV */
 635         struct {
 636                 u32 control;
 637                 u32 pgm_ratios;
 638                 u32 lvds_border_bits;
 639         } gmch_pfit;
 640
 641         /* Panel fitter placement and size for Ironlake+ */
 642         struct {
 643                 u32 pos;
 644                 u32 size;
 645                 bool enabled;
 646                 bool force_thru;
 647         } pch_pfit;
 648
 649         /* FDI configuration, only valid if has_pch_encoder is set. */
 650         int fdi_lanes;
 651         struct intel_link_m_n fdi_m_n;
 652
 653         bool ips_enabled;
 654
 655         bool enable_fbc;
 656
 657         bool double_wide;
 658
 659         bool dp_encoder_is_mst;
 660         int pbn;
 661
 662         struct intel_crtc_scaler_state scaler_state;
 663
 664         /* w/a for waiting 2 vblanks during crtc enable */
 665         enum pipe hsw_workaround_pipe;
 666
 667         /* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
 668         bool disable_lp_wm;
 669
 670         struct intel_crtc_wm_state wm;
 671
 672         /* Gamma mode programmed on the pipe */
 673         uint32_t gamma_mode;
 674 };
 675
 676 struct vlv_wm_state {
 677         struct vlv_pipe_wm wm[3];
 678         struct vlv_sr_wm sr[3];
 679         uint8_t num_active_planes;
 680         uint8_t num_levels;
 681         uint8_t level;
 682         bool cxsr;
 683 };
 684
 685 struct intel_crtc {
 686         struct drm_crtc base;
 687         enum pipe pipe;
 688         enum plane plane;
 689         u8 lut_r[256], lut_g[256], lut_b[256];
 690         /*
 691          * Whether the crtc and the connected output pipeline is active. Implies
 692          * that crtc->enabled is set, i.e. the current mode configuration has
 693          * some outputs connected to this crtc.
 694          */
 695         bool active;
 696         unsigned long enabled_power_domains;
 697         bool lowfreq_avail;
 698         struct intel_overlay *overlay;
 699         struct intel_flip_work *flip_work;
 700
 701         atomic_t unpin_work_count;
 702
 703         /* Display surface base address adjustement for pageflips. Note that on
 704          * gen4+ this only adjusts up to a tile, offsets within a tile are
 705          * handled in the hw itself (with the TILEOFF register). */
 706         u32 dspaddr_offset;
 707         int adjusted_x;
 708         int adjusted_y;
 709
 710         uint32_t cursor_addr;
 711         uint32_t cursor_cntl;
 712         uint32_t cursor_size;
 713         uint32_t cursor_base;
 714
 715         struct intel_crtc_state *config;
 716
 717         /* global reset count when the last flip was submitted */
 718         unsigned int reset_count;
 719
 720         /* Access to these should be protected by dev_priv->irq_lock. */
 721         bool cpu_fifo_underrun_disabled;
 722         bool pch_fifo_underrun_disabled;
 723
 724         /* per-pipe watermark state */
 725         struct {
 726                 /* watermarks currently being used  */
 727                 union {
 728                         struct intel_pipe_wm ilk;
 729                         struct skl_pipe_wm skl;
 730                 } active;
 731
 732                 /* allow CxSR on this pipe */
 733                 bool cxsr_allowed;
 734         } wm;
 735
 736         int scanline_offset;
 737
 738         struct {
 739                 unsigned start_vbl_count;
 740                 ktime_t start_vbl_time;
 741                 int min_vbl, max_vbl;
 742                 int scanline_start;
 743         } debug;
 744
 745         /* scalers available on this crtc */
 746         int num_scalers;
 747
 748         struct vlv_wm_state wm_state;
 749 };
 750
 751 struct intel_plane_wm_parameters {
 752         uint32_t horiz_pixels;
 753         uint32_t vert_pixels;
 754         /*
 755          *   For packed pixel formats:
 756          *     bytes_per_pixel - holds bytes per pixel
 757          *   For planar pixel formats:
 758          *     bytes_per_pixel - holds bytes per pixel for uv-plane
 759          *     y_bytes_per_pixel - holds bytes per pixel for y-plane
 760          */
 761         uint8_t bytes_per_pixel;
 762         uint8_t y_bytes_per_pixel;
 763         bool enabled;
 764         bool scaled;
 765         u64 tiling;
 766         unsigned int rotation;
 767         uint16_t fifo_size;
 768 };
 769
 770 struct intel_plane {
 771         struct drm_plane base;
 772         int plane;
 773         enum pipe pipe;
 774         bool can_scale;
 775         int max_downscale;
 776         uint32_t frontbuffer_bit;
 777
 778         /* Since we need to change the watermarks before/after
 779          * enabling/disabling the planes, we need to store the parameters here
 780          * as the other pieces of the struct may not reflect the values we want
 781          * for the watermark calculations. Currently only Haswell uses this.
 782          */
 783         struct intel_plane_wm_parameters wm;
 784
 785         /*
 786          * NOTE: Do not place new plane state fields here (e.g., when adding
 787          * new plane properties).  New runtime state should now be placed in
 788          * the intel_plane_state structure and accessed via plane_state.
 789          */
 790
 791         void (*update_plane)(struct drm_plane *plane,
 792                              const struct intel_crtc_state *crtc_state,
 793                              const struct intel_plane_state *plane_state);
 794         void (*disable_plane)(struct drm_plane *plane,
 795                               struct drm_crtc *crtc);
 796         int (*check_plane)(struct drm_plane *plane,
 797                            struct intel_crtc_state *crtc_state,
 798                            struct intel_plane_state *state);
 799 };
 800
 801 struct intel_watermark_params {
 802         unsigned long fifo_size;
 803         unsigned long max_wm;
 804         unsigned long default_wm;
 805         unsigned long guard_size;
 806         unsigned long cacheline_size;
 807 };
 808
 809 struct cxsr_latency {
 810         int is_desktop;
 811         int is_ddr3;
 812         unsigned long fsb_freq;
 813         unsigned long mem_freq;
 814         unsigned long display_sr;
 815         unsigned long display_hpll_disable;
 816         unsigned long cursor_sr;
 817         unsigned long cursor_hpll_disable;
 818 };
 819
 820 #define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
 821 #define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
 822 #define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, base)
 823 #define to_intel_connector(x) container_of(x, struct intel_connector, base)
 824 #define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
 825 #define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
 826 #define to_intel_plane(x) container_of(x, struct intel_plane, base)
 827 #define to_intel_plane_state(x) container_of(x, struct intel_plane_state, base)
 828 #define intel_fb_obj(x) (x ? to_intel_framebuffer(x)->obj : NULL)
 829
 830 struct intel_hdmi {
 831         i915_reg_t hdmi_reg;
 832         int ddc_bus;
 833         struct {
 834                 enum drm_dp_dual_mode_type type;
 835                 int max_tmds_clock;
 836         } dp_dual_mode;
 837         bool limited_color_range;
 838         bool color_range_auto;
 839         bool has_hdmi_sink;
 840         bool has_audio;
 841         enum hdmi_force_audio force_audio;
 842         bool rgb_quant_range_selectable;
 843         enum hdmi_picture_aspect aspect_ratio;
 844         struct intel_connector *attached_connector;
 845         void (*write_infoframe)(struct drm_encoder *encoder,
 846                                 enum hdmi_infoframe_type type,
 847                                 const void *frame, ssize_t len);
 848         void (*set_infoframes)(struct drm_encoder *encoder,
 849                                bool enable,
 850                                const struct drm_display_mode *adjusted_mode);
 851         bool (*infoframe_enabled)(struct drm_encoder *encoder,
 852                                   const struct intel_crtc_state *pipe_config);
 853 };
 854
 855 struct intel_dp_mst_encoder;
 856 #define DP_MAX_DOWNSTREAM_PORTS         0x10
 857
 858 /*
 859  * enum link_m_n_set:
 860  *      When platform provides two set of M_N registers for dp, we can
 861  *      program them and switch between them incase of DRRS.
 862  *      But When only one such register is provided, we have to program the
 863  *      required divider value on that registers itself based on the DRRS state.
 864  *
 865  * M1_N1        : Program dp_m_n on M1_N1 registers
 866  *                        dp_m2_n2 on M2_N2 registers (If supported)
 867  *
 868  * M2_N2        : Program dp_m2_n2 on M1_N1 registers
 869  *                        M2_N2 registers are not supported
 870  */
 871
 872 enum link_m_n_set {
 873         /* Sets the m1_n1 and m2_n2 */
 874         M1_N1 = 0,
 875         M2_N2
 876 };
 877
 878 struct intel_dp {
 879         i915_reg_t output_reg;
 880         i915_reg_t aux_ch_ctl_reg;
 881         i915_reg_t aux_ch_data_reg[5];
 882         uint32_t DP;
 883         int link_rate;
 884         uint8_t lane_count;
 885         uint8_t sink_count;
 886         bool link_mst;
 887         bool has_audio;
 888         bool detect_done;
 889         bool channel_eq_status;
 890         enum hdmi_force_audio force_audio;
 891         bool limited_color_range;
 892         bool color_range_auto;
 893         uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
 894         uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
 895         uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
 896         uint8_t edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE];
 897         /* sink rates as reported by DP_SUPPORTED_LINK_RATES */
 898         uint8_t num_sink_rates;
 899         int sink_rates[DP_MAX_SUPPORTED_RATES];
 900         struct drm_dp_aux aux;
 901         uint8_t train_set[4];
 902         int panel_power_up_delay;
 903         int panel_power_down_delay;
 904         int panel_power_cycle_delay;
 905         int backlight_on_delay;
 906         int backlight_off_delay;
 907         struct delayed_work panel_vdd_work;
 908         bool want_panel_vdd;
 909         unsigned long last_power_on;
 910         unsigned long last_backlight_off;
 911         ktime_t panel_power_off_time;
 912
 913         struct notifier_block edp_notifier;
 914
 915         /*
 916          * Pipe whose power sequencer is currently locked into
 917          * this port. Only relevant on VLV/CHV.
 918          */
 919         enum pipe pps_pipe;
 920         /*
 921          * Set if the sequencer may be reset due to a power transition,
 922          * requiring a reinitialization. Only relevant on BXT.
 923          */
 924         bool pps_reset;
 925         struct edp_power_seq pps_delays;
 926
 927         bool can_mst; /* this port supports mst */
 928         bool is_mst;
 929         int active_mst_links;
 930         /* connector directly attached - won't be use for modeset in mst world */
 931         struct intel_connector *attached_connector;
 932
 933         /* mst connector list */
 934         struct intel_dp_mst_encoder *mst_encoders[I915_MAX_PIPES];
 935         struct drm_dp_mst_topology_mgr mst_mgr;
 936
 937         uint32_t (*get_aux_clock_divider)(struct intel_dp *dp, int index);
 938         /*
 939          * This function returns the value we have to program the AUX_CTL
 940          * register with to kick off an AUX transaction.
 941          */
 942         uint32_t (*get_aux_send_ctl)(struct intel_dp *dp,
 943                                      bool has_aux_irq,
 944                                      int send_bytes,
 945                                      uint32_t aux_clock_divider);
 946
 947         /* This is called before a link training is starterd */
 948         void (*prepare_link_retrain)(struct intel_dp *intel_dp);
 949
 950         /* Displayport compliance testing */
 951         unsigned long compliance_test_type;
 952         unsigned long compliance_test_data;
 953         bool compliance_test_active;
 954 };
 955
 956 struct intel_digital_port {
 957         struct intel_encoder base;
 958         enum port port;
 959         u32 saved_port_bits;
 960         struct intel_dp dp;
 961         struct intel_hdmi hdmi;
 962         enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
 963         bool release_cl2_override;
 964         uint8_t max_lanes;
 965 };
 966
 967 struct intel_dp_mst_encoder {
 968         struct intel_encoder base;
 969         enum pipe pipe;
 970         struct intel_digital_port *primary;
 971         struct intel_connector *connector;
 972 };
 973
 974 static inline enum dpio_channel
 975 vlv_dport_to_channel(struct intel_digital_port *dport)
 976 {
 977         switch (dport->port) {
 978         case PORT_B:
 979         case PORT_D:
 980                 return DPIO_CH0;
 981         case PORT_C:
 982                 return DPIO_CH1;
 983         default:
 984                 BUG();
 985         }
 986 }
 987
 988 static inline enum dpio_phy
 989 vlv_dport_to_phy(struct intel_digital_port *dport)
 990 {
 991         switch (dport->port) {
 992         case PORT_B:
 993         case PORT_C:
 994                 return DPIO_PHY0;
 995         case PORT_D:
 996                 return DPIO_PHY1;
 997         default:
 998                 BUG();
 999         }
1000 }
1001
1002 static inline enum dpio_channel
1003 vlv_pipe_to_channel(enum pipe pipe)
1004 {
1005         switch (pipe) {
1006         case PIPE_A:
1007         case PIPE_C:
1008                 return DPIO_CH0;
1009         case PIPE_B:
1010                 return DPIO_CH1;
1011         default:
1012                 BUG();
1013         }
1014 }
1015
1016 static inline struct drm_crtc *
1017 intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
1018 {
1019         struct drm_i915_private *dev_priv = to_i915(dev);
1020         return dev_priv->pipe_to_crtc_mapping[pipe];
1021 }
1022
1023 static inline struct drm_crtc *
1024 intel_get_crtc_for_plane(struct drm_device *dev, int plane)
1025 {
1026         struct drm_i915_private *dev_priv = to_i915(dev);
1027         return dev_priv->plane_to_crtc_mapping[plane];
1028 }
1029
1030 struct intel_flip_work {
1031         struct work_struct unpin_work;
1032         struct work_struct mmio_work;
1033
1034         struct drm_crtc *crtc;
1035         struct drm_framebuffer *old_fb;
1036         struct drm_i915_gem_object *pending_flip_obj;
1037         struct drm_pending_vblank_event *event;
1038         atomic_t pending;
1039         u32 flip_count;
1040         u32 gtt_offset;
1041         struct drm_i915_gem_request *flip_queued_req;
1042         u32 flip_queued_vblank;
1043         u32 flip_ready_vblank;
1044         unsigned int rotation;
1045 };
1046
1047 struct intel_load_detect_pipe {
1048         struct drm_atomic_state *restore_state;
1049 };
1050
1051 static inline struct intel_encoder *
1052 intel_attached_encoder(struct drm_connector *connector)
1053 {
1054         return to_intel_connector(connector)->encoder;
1055 }
1056
1057 static inline struct intel_digital_port *
1058 enc_to_dig_port(struct drm_encoder *encoder)
1059 {
1060         return container_of(encoder, struct intel_digital_port, base.base);
1061 }
1062
1063 static inline struct intel_dp_mst_encoder *
1064 enc_to_mst(struct drm_encoder *encoder)
1065 {
1066         return container_of(encoder, struct intel_dp_mst_encoder, base.base);
1067 }
1068
1069 static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
1070 {
1071         return &enc_to_dig_port(encoder)->dp;
1072 }
1073
1074 static inline struct intel_digital_port *
1075 dp_to_dig_port(struct intel_dp *intel_dp)
1076 {
1077         return container_of(intel_dp, struct intel_digital_port, dp);
1078 }
1079
1080 static inline struct intel_digital_port *
1081 hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
1082 {
1083         return container_of(intel_hdmi, struct intel_digital_port, hdmi);
1084 }
1085
1086 /*
1087  * Returns the number of planes for this pipe, ie the number of sprites + 1
1088  * (primary plane). This doesn't count the cursor plane then.
1089  */
1090 static inline unsigned int intel_num_planes(struct intel_crtc *crtc)
1091 {
1092         return INTEL_INFO(crtc->base.dev)->num_sprites[crtc->pipe] + 1;
1093 }
1094
1095 /* intel_fifo_underrun.c */
1096 bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1097                                            enum pipe pipe, bool enable);
1098 bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
1099                                            enum transcoder pch_transcoder,
1100                                            bool enable);
1101 void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1102                                          enum pipe pipe);
1103 void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
1104                                          enum transcoder pch_transcoder);
1105 void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
1106 void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
1107
1108 /* i915_irq.c */
1109 void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1110 void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1111 void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1112 void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
1113 void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
1114 void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
1115 void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);
1116 u32 gen6_sanitize_rps_pm_mask(struct drm_i915_private *dev_priv, u32 mask);
1117 void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
1118 void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
1119 static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
1120 {
1121         /*
1122          * We only use drm_irq_uninstall() at unload and VT switch, so
1123          * this is the only thing we need to check.
1124          */
1125         return dev_priv->pm.irqs_enabled;
1126 }
1127
1128 int intel_get_crtc_scanline(struct intel_crtc *crtc);
1129 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
1130                                      unsigned int pipe_mask);
1131 void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
1132                                      unsigned int pipe_mask);
1133
1134 /* intel_crt.c */
1135 void intel_crt_init(struct drm_device *dev);
1136 void intel_crt_reset(struct drm_encoder *encoder);
1137
1138 /* intel_ddi.c */
1139 void intel_ddi_clk_select(struct intel_encoder *encoder,
1140                           struct intel_shared_dpll *pll);
1141 void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
1142                                 struct intel_crtc_state *old_crtc_state,
1143                                 struct drm_connector_state *old_conn_state);
1144 void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
1145 void hsw_fdi_link_train(struct drm_crtc *crtc);
1146 void intel_ddi_init(struct drm_device *dev, enum port port);
1147 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
1148 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
1149 void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
1150 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1151                                        enum transcoder cpu_transcoder);
1152 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
1153 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
1154 bool intel_ddi_pll_select(struct intel_crtc *crtc,
1155                           struct intel_crtc_state *crtc_state);
1156 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
1157 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
1158 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
1159 void intel_ddi_get_config(struct intel_encoder *encoder,
1160                           struct intel_crtc_state *pipe_config);
1161 struct intel_encoder *
1162 intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
1163
1164 void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
1165 void intel_ddi_clock_get(struct intel_encoder *encoder,
1166                          struct intel_crtc_state *pipe_config);
1167 void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
1168 uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
1169 struct intel_shared_dpll *intel_ddi_get_link_dpll(struct intel_dp *intel_dp,
1170                                                   int clock);
1171 unsigned int intel_fb_align_height(struct drm_device *dev,
1172                                    unsigned int height,
1173                                    uint32_t pixel_format,
1174                                    uint64_t fb_format_modifier);
1175 u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
1176                               uint64_t fb_modifier, uint32_t pixel_format);
1177
1178 /* intel_audio.c */
1179 void intel_init_audio_hooks(struct drm_i915_private *dev_priv);
1180 void intel_audio_codec_enable(struct intel_encoder *encoder);
1181 void intel_audio_codec_disable(struct intel_encoder *encoder);
1182 void i915_audio_component_init(struct drm_i915_private *dev_priv);
1183 void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
1184
1185 /* intel_display.c */
1186 void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco);
1187 void intel_update_rawclk(struct drm_i915_private *dev_priv);
1188 int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
1189                       const char *name, u32 reg, int ref_freq);
1190 void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv);
1191 void lpt_disable_iclkip(struct drm_i915_private *dev_priv);
1192 extern const struct drm_plane_funcs intel_plane_funcs;
1193 void intel_init_display_hooks(struct drm_i915_private *dev_priv);
1194 unsigned int intel_fb_xy_to_linear(int x, int y,
1195                                    const struct intel_plane_state *state,
1196                                    int plane);
1197 void intel_add_fb_offsets(int *x, int *y,
1198                           const struct intel_plane_state *state, int plane);
1199 unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
1200 bool intel_has_pending_fb_unpin(struct drm_device *dev);
1201 void intel_mark_busy(struct drm_i915_private *dev_priv);
1202 void intel_mark_idle(struct drm_i915_private *dev_priv);
1203 void intel_crtc_restore_mode(struct drm_crtc *crtc);
1204 int intel_display_suspend(struct drm_device *dev);
1205 void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv);
1206 void intel_encoder_destroy(struct drm_encoder *encoder);
1207 int intel_connector_init(struct intel_connector *);
1208 struct intel_connector *intel_connector_alloc(void);
1209 bool intel_connector_get_hw_state(struct intel_connector *connector);
1210 void intel_connector_attach_encoder(struct intel_connector *connector,
1211                                     struct intel_encoder *encoder);
1212 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
1213                                              struct drm_crtc *crtc);
1214 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
1215 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
1216                                 struct drm_file *file_priv);
1217 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1218                                              enum pipe pipe);
1219 static inline bool
1220 intel_crtc_has_type(const struct intel_crtc_state *crtc_state,
1221                     enum intel_output_type type)
1222 {
1223         return crtc_state->output_types & (1 << type);
1224 }
1225 static inline bool
1226 intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
1227 {
1228         return crtc_state->output_types &
1229                 ((1 << INTEL_OUTPUT_DP) |
1230                  (1 << INTEL_OUTPUT_DP_MST) |
1231                  (1 << INTEL_OUTPUT_EDP));
1232 }
1233 static inline void
1234 intel_wait_for_vblank(struct drm_device *dev, int pipe)
1235 {
1236         drm_wait_one_vblank(dev, pipe);
1237 }
1238 static inline void
1239 intel_wait_for_vblank_if_active(struct drm_device *dev, int pipe)
1240 {
1241         const struct intel_crtc *crtc =
1242                 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
1243
1244         if (crtc->active)
1245                 intel_wait_for_vblank(dev, pipe);
1246 }
1247
1248 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);
1249
1250 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
1251 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1252                          struct intel_digital_port *dport,
1253                          unsigned int expected_mask);
1254 bool intel_get_load_detect_pipe(struct drm_connector *connector,
1255                                 struct drm_display_mode *mode,
1256                                 struct intel_load_detect_pipe *old,
1257                                 struct drm_modeset_acquire_ctx *ctx);
1258 void intel_release_load_detect_pipe(struct drm_connector *connector,
1259                                     struct intel_load_detect_pipe *old,
1260                                     struct drm_modeset_acquire_ctx *ctx);
1261 struct i915_vma *
1262 intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
1263 void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
1264 struct drm_framebuffer *
1265 __intel_framebuffer_create(struct drm_device *dev,
1266                            struct drm_mode_fb_cmd2 *mode_cmd,
1267                            struct drm_i915_gem_object *obj);
1268 void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe);
1269 void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe);
1270 void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe);
1271 int intel_prepare_plane_fb(struct drm_plane *plane,
1272                            struct drm_plane_state *new_state);
1273 void intel_cleanup_plane_fb(struct drm_plane *plane,
1274                             struct drm_plane_state *old_state);
1275 int intel_plane_atomic_get_property(struct drm_plane *plane,
1276                                     const struct drm_plane_state *state,
1277                                     struct drm_property *property,
1278                                     uint64_t *val);
1279 int intel_plane_atomic_set_property(struct drm_plane *plane,
1280                                     struct drm_plane_state *state,
1281                                     struct drm_property *property,
1282                                     uint64_t val);
1283 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
1284                                     struct drm_plane_state *plane_state);
1285
1286 unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
1287                                uint64_t fb_modifier, unsigned int cpp);
1288
1289 static inline bool
1290 intel_rotation_90_or_270(unsigned int rotation)
1291 {
1292         return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270);
1293 }
1294
1295 void intel_create_rotation_property(struct drm_device *dev,
1296                                         struct intel_plane *plane);
1297
1298 void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1299                                     enum pipe pipe);
1300
1301 int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
1302                      const struct dpll *dpll);
1303 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe);
1304 int lpt_get_iclkip(struct drm_i915_private *dev_priv);
1305
1306 /* modesetting asserts */
1307 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1308                            enum pipe pipe);
1309 void assert_pll(struct drm_i915_private *dev_priv,
1310                 enum pipe pipe, bool state);
1311 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
1312 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
1313 void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state);
1314 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1315 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1316 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1317                        enum pipe pipe, bool state);
1318 #define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
1319 #define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
1320 void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
1321 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
1322 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
1323 u32 intel_compute_tile_offset(int *x, int *y,
1324                               const struct intel_plane_state *state, int plane);
1325 void intel_prepare_reset(struct drm_i915_private *dev_priv);
1326 void intel_finish_reset(struct drm_i915_private *dev_priv);
1327 void hsw_enable_pc8(struct drm_i915_private *dev_priv);
1328 void hsw_disable_pc8(struct drm_i915_private *dev_priv);
1329 void bxt_init_cdclk(struct drm_i915_private *dev_priv);
1330 void bxt_uninit_cdclk(struct drm_i915_private *dev_priv);
1331 void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
1332 void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
1333 bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
1334                             enum dpio_phy phy);
1335 bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
1336                               enum dpio_phy phy);
1337 void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
1338 void bxt_enable_dc9(struct drm_i915_private *dev_priv);
1339 void bxt_disable_dc9(struct drm_i915_private *dev_priv);
1340 void gen9_enable_dc5(struct drm_i915_private *dev_priv);
1341 void skl_init_cdclk(struct drm_i915_private *dev_priv);
1342 void skl_uninit_cdclk(struct drm_i915_private *dev_priv);
1343 unsigned int skl_cdclk_get_vco(unsigned int freq);
1344 void skl_enable_dc6(struct drm_i915_private *dev_priv);
1345 void skl_disable_dc6(struct drm_i915_private *dev_priv);
1346 void intel_dp_get_m_n(struct intel_crtc *crtc,
1347                       struct intel_crtc_state *pipe_config);
1348 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n);
1349 int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
1350 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1351                         struct dpll *best_clock);
1352 int chv_calc_dpll_params(int refclk, struct dpll *pll_clock);
1353
1354 bool intel_crtc_active(struct drm_crtc *crtc);
1355 void hsw_enable_ips(struct intel_crtc *crtc);
1356 void hsw_disable_ips(struct intel_crtc *crtc);
1357 enum intel_display_power_domain
1358 intel_display_port_power_domain(struct intel_encoder *intel_encoder);
1359 enum intel_display_power_domain
1360 intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder);
1361 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
1362                                  struct intel_crtc_state *pipe_config);
1363
1364 int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
1365 int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
1366
1367 u32 intel_fb_gtt_offset(struct drm_framebuffer *fb, unsigned int rotation);
1368
1369 u32 skl_plane_ctl_format(uint32_t pixel_format);
1370 u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
1371 u32 skl_plane_ctl_rotation(unsigned int rotation);
1372 u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
1373                      unsigned int rotation);
1374 int skl_check_plane_surface(struct intel_plane_state *plane_state);
1375
1376 /* intel_csr.c */
1377 void intel_csr_ucode_init(struct drm_i915_private *);
1378 void intel_csr_load_program(struct drm_i915_private *);
1379 void intel_csr_ucode_fini(struct drm_i915_private *);
1380 void intel_csr_ucode_suspend(struct drm_i915_private *);
1381 void intel_csr_ucode_resume(struct drm_i915_private *);
1382
1383 /* intel_dp.c */
1384 bool intel_dp_init(struct drm_device *dev, i915_reg_t output_reg, enum port port);
1385 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
1386                              struct intel_connector *intel_connector);
1387 void intel_dp_set_link_params(struct intel_dp *intel_dp,
1388                               int link_rate, uint8_t lane_count,
1389                               bool link_mst);
1390 void intel_dp_start_link_train(struct intel_dp *intel_dp);
1391 void intel_dp_stop_link_train(struct intel_dp *intel_dp);
1392 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
1393 void intel_dp_encoder_reset(struct drm_encoder *encoder);
1394 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
1395 void intel_dp_encoder_destroy(struct drm_encoder *encoder);
1396 int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc);
1397 bool intel_dp_compute_config(struct intel_encoder *encoder,
1398                              struct intel_crtc_state *pipe_config,
1399                              struct drm_connector_state *conn_state);
1400 bool intel_dp_is_edp(struct drm_device *dev, enum port port);
1401 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
1402                                   bool long_hpd);
1403 void intel_edp_backlight_on(struct intel_dp *intel_dp);
1404 void intel_edp_backlight_off(struct intel_dp *intel_dp);
1405 void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
1406 void intel_edp_panel_on(struct intel_dp *intel_dp);
1407 void intel_edp_panel_off(struct intel_dp *intel_dp);
1408 void intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector);
1409 void intel_dp_mst_suspend(struct drm_device *dev);
1410 void intel_dp_mst_resume(struct drm_device *dev);
1411 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
1412 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
1413 void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
1414 void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
1415 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
1416 void intel_plane_destroy(struct drm_plane *plane);
1417 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
1418                            struct intel_crtc_state *crtc_state);
1419 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
1420                            struct intel_crtc_state *crtc_state);
1421 void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
1422                                unsigned int frontbuffer_bits);
1423 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
1424                           unsigned int frontbuffer_bits);
1425
1426 void
1427 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
1428                                        uint8_t dp_train_pat);
1429 void
1430 intel_dp_set_signal_levels(struct intel_dp *intel_dp);
1431 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
1432 uint8_t
1433 intel_dp_voltage_max(struct intel_dp *intel_dp);
1434 uint8_t
1435 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing);
1436 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
1437                            uint8_t *link_bw, uint8_t *rate_select);
1438 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);
1439 bool
1440 intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]);
1441
1442 static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
1443 {
1444         return ~((1 << lane_count) - 1) & 0xf;
1445 }
1446
1447 /* intel_dp_aux_backlight.c */
1448 int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector);
1449
1450 /* intel_dp_mst.c */
1451 int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id);
1452 void intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port);
1453 /* intel_dsi.c */
1454 void intel_dsi_init(struct drm_device *dev);
1455
1456 /* intel_dsi_dcs_backlight.c */
1457 int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);
1458
1459 /* intel_dvo.c */
1460 void intel_dvo_init(struct drm_device *dev);
1461 /* intel_hotplug.c */
1462 void intel_hpd_poll_init(struct drm_i915_private *dev_priv);
1463
1464
1465 /* legacy fbdev emulation in intel_fbdev.c */
1466 #ifdef CONFIG_DRM_FBDEV_EMULATION
1467 extern int intel_fbdev_init(struct drm_device *dev);
1468 extern void intel_fbdev_initial_config_async(struct drm_device *dev);
1469 extern void intel_fbdev_fini(struct drm_device *dev);
1470 extern void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
1471 extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
1472 extern void intel_fbdev_restore_mode(struct drm_device *dev);
1473 #else
1474 static inline int intel_fbdev_init(struct drm_device *dev)
1475 {
1476         return 0;
1477 }
1478
1479 static inline void intel_fbdev_initial_config_async(struct drm_device *dev)
1480 {
1481 }
1482
1483 static inline void intel_fbdev_fini(struct drm_device *dev)
1484 {
1485 }
1486
1487 static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
1488 {
1489 }
1490
1491 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
1492 {
1493 }
1494
1495 static inline void intel_fbdev_restore_mode(struct drm_device *dev)
1496 {
1497 }
1498 #endif
1499
1500 /* intel_fbc.c */
1501 void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
1502                            struct drm_atomic_state *state);
1503 bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
1504 void intel_fbc_pre_update(struct intel_crtc *crtc,
1505                           struct intel_crtc_state *crtc_state,
1506                           struct intel_plane_state *plane_state);
1507 void intel_fbc_post_update(struct intel_crtc *crtc);
1508 void intel_fbc_init(struct drm_i915_private *dev_priv);
1509 void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
1510 void intel_fbc_enable(struct intel_crtc *crtc,
1511                       struct intel_crtc_state *crtc_state,
1512                       struct intel_plane_state *plane_state);
1513 void intel_fbc_disable(struct intel_crtc *crtc);
1514 void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
1515 void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
1516                           unsigned int frontbuffer_bits,
1517                           enum fb_op_origin origin);
1518 void intel_fbc_flush(struct drm_i915_private *dev_priv,
1519                      unsigned int frontbuffer_bits, enum fb_op_origin origin);
1520 void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv);
1521 void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *dev_priv);
1522
1523 /* intel_hdmi.c */
1524 void intel_hdmi_init(struct drm_device *dev, i915_reg_t hdmi_reg, enum port port);
1525 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1526                                struct intel_connector *intel_connector);
1527 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
1528 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
1529                                struct intel_crtc_state *pipe_config,
1530                                struct drm_connector_state *conn_state);
1531 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
1532
1533
1534 /* intel_lvds.c */
1535 void intel_lvds_init(struct drm_device *dev);
1536 struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev);
1537 bool intel_is_dual_link_lvds(struct drm_device *dev);
1538
1539
1540 /* intel_modes.c */
1541 int intel_connector_update_modes(struct drm_connector *connector,
1542                                  struct edid *edid);
1543 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
1544 void intel_attach_force_audio_property(struct drm_connector *connector);
1545 void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
1546 void intel_attach_aspect_ratio_property(struct drm_connector *connector);
1547
1548
1549 /* intel_overlay.c */
1550 void intel_setup_overlay(struct drm_i915_private *dev_priv);
1551 void intel_cleanup_overlay(struct drm_i915_private *dev_priv);
1552 int intel_overlay_switch_off(struct intel_overlay *overlay);
1553 int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
1554                                   struct drm_file *file_priv);
1555 int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
1556                               struct drm_file *file_priv);
1557 void intel_overlay_reset(struct drm_i915_private *dev_priv);
1558
1559
1560 /* intel_panel.c */
1561 int intel_panel_init(struct intel_panel *panel,
1562                      struct drm_display_mode *fixed_mode,
1563                      struct drm_display_mode *downclock_mode);
1564 void intel_panel_fini(struct intel_panel *panel);
1565 void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
1566                             struct drm_display_mode *adjusted_mode);
1567 void intel_pch_panel_fitting(struct intel_crtc *crtc,
1568                              struct intel_crtc_state *pipe_config,
1569                              int fitting_mode);
1570 void intel_gmch_panel_fitting(struct intel_crtc *crtc,
1571                               struct intel_crtc_state *pipe_config,
1572                               int fitting_mode);
1573 void intel_panel_set_backlight_acpi(struct intel_connector *connector,
1574                                     u32 level, u32 max);
1575 int intel_panel_setup_backlight(struct drm_connector *connector,
1576                                 enum pipe pipe);
1577 void intel_panel_enable_backlight(struct intel_connector *connector);
1578 void intel_panel_disable_backlight(struct intel_connector *connector);
1579 void intel_panel_destroy_backlight(struct drm_connector *connector);
1580 enum drm_connector_status intel_panel_detect(struct drm_device *dev);
1581 extern struct drm_display_mode *intel_find_panel_downclock(
1582                                 struct drm_device *dev,
1583                                 struct drm_display_mode *fixed_mode,
1584                                 struct drm_connector *connector);
1585
1586 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
1587 int intel_backlight_device_register(struct intel_connector *connector);
1588 void intel_backlight_device_unregister(struct intel_connector *connector);
1589 #else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
1590 static int intel_backlight_device_register(struct intel_connector *connector)
1591 {
1592         return 0;
1593 }
1594 static inline void intel_backlight_device_unregister(struct intel_connector *connector)
1595 {
1596 }
1597 #endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
1598
1599
1600 /* intel_psr.c */
1601 void intel_psr_enable(struct intel_dp *intel_dp);
1602 void intel_psr_disable(struct intel_dp *intel_dp);
1603 void intel_psr_invalidate(struct drm_i915_private *dev_priv,
1604                           unsigned frontbuffer_bits);
1605 void intel_psr_flush(struct drm_i915_private *dev_priv,
1606                      unsigned frontbuffer_bits,
1607                      enum fb_op_origin origin);
1608 void intel_psr_init(struct drm_device *dev);
1609 void intel_psr_single_frame_update(struct drm_i915_private *dev_priv,
1610                                    unsigned frontbuffer_bits);
1611
1612 /* intel_runtime_pm.c */
1613 int intel_power_domains_init(struct drm_i915_private *);
1614 void intel_power_domains_fini(struct drm_i915_private *);
1615 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
1616 void intel_power_domains_suspend(struct drm_i915_private *dev_priv);
1617 void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
1618 void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
1619 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
1620 const char *
1621 intel_display_power_domain_str(enum intel_display_power_domain domain);
1622
1623 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1624                                     enum intel_display_power_domain domain);
1625 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
1626                                       enum intel_display_power_domain domain);
1627 void intel_display_power_get(struct drm_i915_private *dev_priv,
1628                              enum intel_display_power_domain domain);
1629 bool intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
1630                                         enum intel_display_power_domain domain);
1631 void intel_display_power_put(struct drm_i915_private *dev_priv,
1632                              enum intel_display_power_domain domain);
1633
1634 static inline void
1635 assert_rpm_device_not_suspended(struct drm_i915_private *dev_priv)
1636 {
1637         WARN_ONCE(dev_priv->pm.suspended,
1638                   "Device suspended during HW access\n");
1639 }
1640
1641 static inline void
1642 assert_rpm_wakelock_held(struct drm_i915_private *dev_priv)
1643 {
1644         assert_rpm_device_not_suspended(dev_priv);
1645         /* FIXME: Needs to be converted back to WARN_ONCE, but currently causes
1646          * too much noise. */
1647         if (!atomic_read(&dev_priv->pm.wakeref_count))
1648                 DRM_DEBUG_DRIVER("RPM wakelock ref not held during HW access");
1649 }
1650
1651 static inline int
1652 assert_rpm_atomic_begin(struct drm_i915_private *dev_priv)
1653 {
1654         int seq = atomic_read(&dev_priv->pm.atomic_seq);
1655
1656         assert_rpm_wakelock_held(dev_priv);
1657
1658         return seq;
1659 }
1660
1661 static inline void
1662 assert_rpm_atomic_end(struct drm_i915_private *dev_priv, int begin_seq)
1663 {
1664         WARN_ONCE(atomic_read(&dev_priv->pm.atomic_seq) != begin_seq,
1665                   "HW access outside of RPM atomic section\n");
1666 }
1667
1668 /**
1669  * disable_rpm_wakeref_asserts - disable the RPM assert checks
1670  * @dev_priv: i915 device instance
1671  *
1672  * This function disable asserts that check if we hold an RPM wakelock
1673  * reference, while keeping the device-not-suspended checks still enabled.
1674  * It's meant to be used only in special circumstances where our rule about
1675  * the wakelock refcount wrt. the device power state doesn't hold. According
1676  * to this rule at any point where we access the HW or want to keep the HW in
1677  * an active state we must hold an RPM wakelock reference acquired via one of
1678  * the intel_runtime_pm_get() helpers. Currently there are a few special spots
1679  * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
1680  * forcewake release timer, and the GPU RPS and hangcheck works. All other
1681  * users should avoid using this function.
1682  *
1683  * Any calls to this function must have a symmetric call to
1684  * enable_rpm_wakeref_asserts().
1685  */
1686 static inline void
1687 disable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1688 {
1689         atomic_inc(&dev_priv->pm.wakeref_count);
1690 }
1691
1692 /**
1693  * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
1694  * @dev_priv: i915 device instance
1695  *
1696  * This function re-enables the RPM assert checks after disabling them with
1697  * disable_rpm_wakeref_asserts. It's meant to be used only in special
1698  * circumstances otherwise its use should be avoided.
1699  *
1700  * Any calls to this function must have a symmetric call to
1701  * disable_rpm_wakeref_asserts().
1702  */
1703 static inline void
1704 enable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
1705 {
1706         atomic_dec(&dev_priv->pm.wakeref_count);
1707 }
1708
1709 void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
1710 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv);
1711 void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
1712 void intel_runtime_pm_put(struct drm_i915_private *dev_priv);
1713
1714 void intel_display_set_init_power(struct drm_i915_private *dev, bool enable);
1715
1716 void chv_phy_powergate_lanes(struct intel_encoder *encoder,
1717                              bool override, unsigned int mask);
1718 bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
1719                           enum dpio_channel ch, bool override);
1720
1721
1722 /* intel_pm.c */
1723 void intel_init_clock_gating(struct drm_device *dev);
1724 void intel_suspend_hw(struct drm_device *dev);
1725 int ilk_wm_max_level(const struct drm_device *dev);
1726 void intel_update_watermarks(struct drm_crtc *crtc);
1727 void intel_init_pm(struct drm_device *dev);
1728 void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv);
1729 void intel_pm_setup(struct drm_device *dev);
1730 void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
1731 void intel_gpu_ips_teardown(void);
1732 void intel_init_gt_powersave(struct drm_i915_private *dev_priv);
1733 void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv);
1734 void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv);
1735 void intel_enable_gt_powersave(struct drm_i915_private *dev_priv);
1736 void intel_autoenable_gt_powersave(struct drm_i915_private *dev_priv);
1737 void intel_disable_gt_powersave(struct drm_i915_private *dev_priv);
1738 void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv);
1739 void gen6_rps_busy(struct drm_i915_private *dev_priv);
1740 void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
1741 void gen6_rps_idle(struct drm_i915_private *dev_priv);
1742 void gen6_rps_boost(struct drm_i915_private *dev_priv,
1743                     struct intel_rps_client *rps,
1744                     unsigned long submitted);
1745 void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req);
1746 void vlv_wm_get_hw_state(struct drm_device *dev);
1747 void ilk_wm_get_hw_state(struct drm_device *dev);
1748 void skl_wm_get_hw_state(struct drm_device *dev);
1749 void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
1750                           struct skl_ddb_allocation *ddb /* out */);
1751 bool intel_can_enable_sagv(struct drm_atomic_state *state);
1752 int intel_enable_sagv(struct drm_i915_private *dev_priv);
1753 int intel_disable_sagv(struct drm_i915_private *dev_priv);
1754 bool skl_ddb_allocation_equals(const struct skl_ddb_allocation *old,
1755                                const struct skl_ddb_allocation *new,
1756                                enum pipe pipe);
1757 bool skl_ddb_allocation_overlaps(struct drm_atomic_state *state,
1758                                  const struct skl_ddb_allocation *old,
1759                                  const struct skl_ddb_allocation *new,
1760                                  enum pipe pipe);
1761 void skl_write_cursor_wm(struct intel_crtc *intel_crtc,
1762                          const struct skl_wm_values *wm);
1763 void skl_write_plane_wm(struct intel_crtc *intel_crtc,
1764                         const struct skl_wm_values *wm,
1765                         int plane);
1766 uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config);
1767 bool ilk_disable_lp_wm(struct drm_device *dev);
1768 int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6);
1769 static inline int intel_enable_rc6(void)
1770 {
1771         return i915.enable_rc6;
1772 }
1773
1774 /* intel_sdvo.c */
1775 bool intel_sdvo_init(struct drm_device *dev,
1776                      i915_reg_t reg, enum port port);
1777
1778
1779 /* intel_sprite.c */
1780 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
1781                              int usecs);
1782 int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
1783 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
1784                               struct drm_file *file_priv);
1785 void intel_pipe_update_start(struct intel_crtc *crtc);
1786 void intel_pipe_update_end(struct intel_crtc *crtc, struct intel_flip_work *work);
1787
1788 /* intel_tv.c */
1789 void intel_tv_init(struct drm_device *dev);
1790
1791 /* intel_atomic.c */
1792 int intel_connector_atomic_get_property(struct drm_connector *connector,
1793                                         const struct drm_connector_state *state,
1794                                         struct drm_property *property,
1795                                         uint64_t *val);
1796 struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
1797 void intel_crtc_destroy_state(struct drm_crtc *crtc,
1798                                struct drm_crtc_state *state);
1799 struct drm_atomic_state *intel_atomic_state_alloc(struct drm_device *dev);
1800 void intel_atomic_state_clear(struct drm_atomic_state *);
1801 struct intel_shared_dpll_config *
1802 intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s);
1803
1804 static inline struct intel_crtc_state *
1805 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
1806                             struct intel_crtc *crtc)
1807 {
1808         struct drm_crtc_state *crtc_state;
1809         crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
1810         if (IS_ERR(crtc_state))
1811                 return ERR_CAST(crtc_state);
1812
1813         return to_intel_crtc_state(crtc_state);
1814 }
1815
1816 static inline struct intel_plane_state *
1817 intel_atomic_get_existing_plane_state(struct drm_atomic_state *state,
1818                                       struct intel_plane *plane)
1819 {
1820         struct drm_plane_state *plane_state;
1821
1822         plane_state = drm_atomic_get_existing_plane_state(state, &plane->base);
1823
1824         return to_intel_plane_state(plane_state);
1825 }
1826
1827 int intel_atomic_setup_scalers(struct drm_device *dev,
1828         struct intel_crtc *intel_crtc,
1829         struct intel_crtc_state *crtc_state);
1830
1831 /* intel_atomic_plane.c */
1832 struct intel_plane_state *intel_create_plane_state(struct drm_plane *plane);
1833 struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
1834 void intel_plane_destroy_state(struct drm_plane *plane,
1835                                struct drm_plane_state *state);
1836 extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
1837
1838 /* intel_color.c */
1839 void intel_color_init(struct drm_crtc *crtc);
1840 int intel_color_check(struct drm_crtc *crtc, struct drm_crtc_state *state);
1841 void intel_color_set_csc(struct drm_crtc_state *crtc_state);
1842 void intel_color_load_luts(struct drm_crtc_state *crtc_state);
1843
1844 #endif /* __INTEL_DRV_H__ */