drivers/gpu/drm/i915/display/intel_display_power.c

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   5
   6 #include "display/intel_crt.h"
   7
   8 #include "i915_drv.h"
   9 #include "i915_irq.h"
  10 #include "intel_cdclk.h"
  11 #include "intel_combo_phy.h"
  12 #include "intel_csr.h"
  13 #include "intel_display_power.h"
  14 #include "intel_display_types.h"
  15 #include "intel_dpio_phy.h"
  16 #include "intel_hotplug.h"
  17 #include "intel_pm.h"
  18 #include "intel_pps.h"
  19 #include "intel_sideband.h"
  20 #include "intel_tc.h"
  21 #include "intel_vga.h"
  22
  23 bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
  24                                          enum i915_power_well_id power_well_id);
  25
  26 const char *
  27 intel_display_power_domain_str(enum intel_display_power_domain domain)
  28 {
  29         switch (domain) {
  30         case POWER_DOMAIN_DISPLAY_CORE:
  31                 return "DISPLAY_CORE";
  32         case POWER_DOMAIN_PIPE_A:
  33                 return "PIPE_A";
  34         case POWER_DOMAIN_PIPE_B:
  35                 return "PIPE_B";
  36         case POWER_DOMAIN_PIPE_C:
  37                 return "PIPE_C";
  38         case POWER_DOMAIN_PIPE_D:
  39                 return "PIPE_D";
  40         case POWER_DOMAIN_PIPE_A_PANEL_FITTER:
  41                 return "PIPE_A_PANEL_FITTER";
  42         case POWER_DOMAIN_PIPE_B_PANEL_FITTER:
  43                 return "PIPE_B_PANEL_FITTER";
  44         case POWER_DOMAIN_PIPE_C_PANEL_FITTER:
  45                 return "PIPE_C_PANEL_FITTER";
  46         case POWER_DOMAIN_PIPE_D_PANEL_FITTER:
  47                 return "PIPE_D_PANEL_FITTER";
  48         case POWER_DOMAIN_TRANSCODER_A:
  49                 return "TRANSCODER_A";
  50         case POWER_DOMAIN_TRANSCODER_B:
  51                 return "TRANSCODER_B";
  52         case POWER_DOMAIN_TRANSCODER_C:
  53                 return "TRANSCODER_C";
  54         case POWER_DOMAIN_TRANSCODER_D:
  55                 return "TRANSCODER_D";
  56         case POWER_DOMAIN_TRANSCODER_EDP:
  57                 return "TRANSCODER_EDP";
  58         case POWER_DOMAIN_TRANSCODER_VDSC_PW2:
  59                 return "TRANSCODER_VDSC_PW2";
  60         case POWER_DOMAIN_TRANSCODER_DSI_A:
  61                 return "TRANSCODER_DSI_A";
  62         case POWER_DOMAIN_TRANSCODER_DSI_C:
  63                 return "TRANSCODER_DSI_C";
  64         case POWER_DOMAIN_PORT_DDI_A_LANES:
  65                 return "PORT_DDI_A_LANES";
  66         case POWER_DOMAIN_PORT_DDI_B_LANES:
  67                 return "PORT_DDI_B_LANES";
  68         case POWER_DOMAIN_PORT_DDI_C_LANES:
  69                 return "PORT_DDI_C_LANES";
  70         case POWER_DOMAIN_PORT_DDI_D_LANES:
  71                 return "PORT_DDI_D_LANES";
  72         case POWER_DOMAIN_PORT_DDI_E_LANES:
  73                 return "PORT_DDI_E_LANES";
  74         case POWER_DOMAIN_PORT_DDI_F_LANES:
  75                 return "PORT_DDI_F_LANES";
  76         case POWER_DOMAIN_PORT_DDI_G_LANES:
  77                 return "PORT_DDI_G_LANES";
  78         case POWER_DOMAIN_PORT_DDI_H_LANES:
  79                 return "PORT_DDI_H_LANES";
  80         case POWER_DOMAIN_PORT_DDI_I_LANES:
  81                 return "PORT_DDI_I_LANES";
  82         case POWER_DOMAIN_PORT_DDI_A_IO:
  83                 return "PORT_DDI_A_IO";
  84         case POWER_DOMAIN_PORT_DDI_B_IO:
  85                 return "PORT_DDI_B_IO";
  86         case POWER_DOMAIN_PORT_DDI_C_IO:
  87                 return "PORT_DDI_C_IO";
  88         case POWER_DOMAIN_PORT_DDI_D_IO:
  89                 return "PORT_DDI_D_IO";
  90         case POWER_DOMAIN_PORT_DDI_E_IO:
  91                 return "PORT_DDI_E_IO";
  92         case POWER_DOMAIN_PORT_DDI_F_IO:
  93                 return "PORT_DDI_F_IO";
  94         case POWER_DOMAIN_PORT_DDI_G_IO:
  95                 return "PORT_DDI_G_IO";
  96         case POWER_DOMAIN_PORT_DDI_H_IO:
  97                 return "PORT_DDI_H_IO";
  98         case POWER_DOMAIN_PORT_DDI_I_IO:
  99                 return "PORT_DDI_I_IO";
 100         case POWER_DOMAIN_PORT_DSI:
 101                 return "PORT_DSI";
 102         case POWER_DOMAIN_PORT_CRT:
 103                 return "PORT_CRT";
 104         case POWER_DOMAIN_PORT_OTHER:
 105                 return "PORT_OTHER";
 106         case POWER_DOMAIN_VGA:
 107                 return "VGA";
 108         case POWER_DOMAIN_AUDIO:
 109                 return "AUDIO";
 110         case POWER_DOMAIN_AUX_A:
 111                 return "AUX_A";
 112         case POWER_DOMAIN_AUX_B:
 113                 return "AUX_B";
 114         case POWER_DOMAIN_AUX_C:
 115                 return "AUX_C";
 116         case POWER_DOMAIN_AUX_D:
 117                 return "AUX_D";
 118         case POWER_DOMAIN_AUX_E:
 119                 return "AUX_E";
 120         case POWER_DOMAIN_AUX_F:
 121                 return "AUX_F";
 122         case POWER_DOMAIN_AUX_G:
 123                 return "AUX_G";
 124         case POWER_DOMAIN_AUX_H:
 125                 return "AUX_H";
 126         case POWER_DOMAIN_AUX_I:
 127                 return "AUX_I";
 128         case POWER_DOMAIN_AUX_IO_A:
 129                 return "AUX_IO_A";
 130         case POWER_DOMAIN_AUX_C_TBT:
 131                 return "AUX_C_TBT";
 132         case POWER_DOMAIN_AUX_D_TBT:
 133                 return "AUX_D_TBT";
 134         case POWER_DOMAIN_AUX_E_TBT:
 135                 return "AUX_E_TBT";
 136         case POWER_DOMAIN_AUX_F_TBT:
 137                 return "AUX_F_TBT";
 138         case POWER_DOMAIN_AUX_G_TBT:
 139                 return "AUX_G_TBT";
 140         case POWER_DOMAIN_AUX_H_TBT:
 141                 return "AUX_H_TBT";
 142         case POWER_DOMAIN_AUX_I_TBT:
 143                 return "AUX_I_TBT";
 144         case POWER_DOMAIN_GMBUS:
 145                 return "GMBUS";
 146         case POWER_DOMAIN_INIT:
 147                 return "INIT";
 148         case POWER_DOMAIN_MODESET:
 149                 return "MODESET";
 150         case POWER_DOMAIN_GT_IRQ:
 151                 return "GT_IRQ";
 152         case POWER_DOMAIN_DPLL_DC_OFF:
 153                 return "DPLL_DC_OFF";
 154         case POWER_DOMAIN_TC_COLD_OFF:
 155                 return "TC_COLD_OFF";
 156         default:
 157                 MISSING_CASE(domain);
 158                 return "?";
 159         }
 160 }
 161
 162 static void intel_power_well_enable(struct drm_i915_private *dev_priv,
 163                                     struct i915_power_well *power_well)
 164 {
 165         drm_dbg_kms(&dev_priv->drm, "enabling %s\n", power_well->desc->name);
 166         power_well->desc->ops->enable(dev_priv, power_well);
 167         power_well->hw_enabled = true;
 168 }
 169
 170 static void intel_power_well_disable(struct drm_i915_private *dev_priv,
 171                                      struct i915_power_well *power_well)
 172 {
 173         drm_dbg_kms(&dev_priv->drm, "disabling %s\n", power_well->desc->name);
 174         power_well->hw_enabled = false;
 175         power_well->desc->ops->disable(dev_priv, power_well);
 176 }
 177
 178 static void intel_power_well_get(struct drm_i915_private *dev_priv,
 179                                  struct i915_power_well *power_well)
 180 {
 181         if (!power_well->count++)
 182                 intel_power_well_enable(dev_priv, power_well);
 183 }
 184
 185 static void intel_power_well_put(struct drm_i915_private *dev_priv,
 186                                  struct i915_power_well *power_well)
 187 {
 188         drm_WARN(&dev_priv->drm, !power_well->count,
 189                  "Use count on power well %s is already zero",
 190                  power_well->desc->name);
 191
 192         if (!--power_well->count)
 193                 intel_power_well_disable(dev_priv, power_well);
 194 }
 195
 196 /**
 197  * __intel_display_power_is_enabled - unlocked check for a power domain
 198  * @dev_priv: i915 device instance
 199  * @domain: power domain to check
 200  *
 201  * This is the unlocked version of intel_display_power_is_enabled() and should
 202  * only be used from error capture and recovery code where deadlocks are
 203  * possible.
 204  *
 205  * Returns:
 206  * True when the power domain is enabled, false otherwise.
 207  */
 208 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
 209                                       enum intel_display_power_domain domain)
 210 {
 211         struct i915_power_well *power_well;
 212         bool is_enabled;
 213
 214         if (dev_priv->runtime_pm.suspended)
 215                 return false;
 216
 217         is_enabled = true;
 218
 219         for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain)) {
 220                 if (power_well->desc->always_on)
 221                         continue;
 222
 223                 if (!power_well->hw_enabled) {
 224                         is_enabled = false;
 225                         break;
 226                 }
 227         }
 228
 229         return is_enabled;
 230 }
 231
 232 /**
 233  * intel_display_power_is_enabled - check for a power domain
 234  * @dev_priv: i915 device instance
 235  * @domain: power domain to check
 236  *
 237  * This function can be used to check the hw power domain state. It is mostly
 238  * used in hardware state readout functions. Everywhere else code should rely
 239  * upon explicit power domain reference counting to ensure that the hardware
 240  * block is powered up before accessing it.
 241  *
 242  * Callers must hold the relevant modesetting locks to ensure that concurrent
 243  * threads can't disable the power well while the caller tries to read a few
 244  * registers.
 245  *
 246  * Returns:
 247  * True when the power domain is enabled, false otherwise.
 248  */
 249 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
 250                                     enum intel_display_power_domain domain)
 251 {
 252         struct i915_power_domains *power_domains;
 253         bool ret;
 254
 255         power_domains = &dev_priv->power_domains;
 256
 257         mutex_lock(&power_domains->lock);
 258         ret = __intel_display_power_is_enabled(dev_priv, domain);
 259         mutex_unlock(&power_domains->lock);
 260
 261         return ret;
 262 }
 263
 264 /*
 265  * Starting with Haswell, we have a "Power Down Well" that can be turned off
 266  * when not needed anymore. We have 4 registers that can request the power well
 267  * to be enabled, and it will only be disabled if none of the registers is
 268  * requesting it to be enabled.
 269  */
 270 static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv,
 271                                        u8 irq_pipe_mask, bool has_vga)
 272 {
 273         if (has_vga)
 274                 intel_vga_reset_io_mem(dev_priv);
 275
 276         if (irq_pipe_mask)
 277                 gen8_irq_power_well_post_enable(dev_priv, irq_pipe_mask);
 278 }
 279
 280 static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv,
 281                                        u8 irq_pipe_mask)
 282 {
 283         if (irq_pipe_mask)
 284                 gen8_irq_power_well_pre_disable(dev_priv, irq_pipe_mask);
 285 }
 286
 287 #define ICL_AUX_PW_TO_CH(pw_idx)        \
 288         ((pw_idx) - ICL_PW_CTL_IDX_AUX_A + AUX_CH_A)
 289
 290 #define ICL_TBT_AUX_PW_TO_CH(pw_idx)    \
 291         ((pw_idx) - ICL_PW_CTL_IDX_AUX_TBT1 + AUX_CH_C)
 292
 293 static enum aux_ch icl_tc_phy_aux_ch(struct drm_i915_private *dev_priv,
 294                                      struct i915_power_well *power_well)
 295 {
 296         int pw_idx = power_well->desc->hsw.idx;
 297
 298         return power_well->desc->hsw.is_tc_tbt ? ICL_TBT_AUX_PW_TO_CH(pw_idx) :
 299                                                  ICL_AUX_PW_TO_CH(pw_idx);
 300 }
 301
 302 static struct intel_digital_port *
 303 aux_ch_to_digital_port(struct drm_i915_private *dev_priv,
 304                        enum aux_ch aux_ch)
 305 {
 306         struct intel_digital_port *dig_port = NULL;
 307         struct intel_encoder *encoder;
 308
 309         for_each_intel_encoder(&dev_priv->drm, encoder) {
 310                 /* We'll check the MST primary port */
 311                 if (encoder->type == INTEL_OUTPUT_DP_MST)
 312                         continue;
 313
 314                 dig_port = enc_to_dig_port(encoder);
 315                 if (!dig_port)
 316                         continue;
 317
 318                 if (dig_port->aux_ch != aux_ch) {
 319                         dig_port = NULL;
 320                         continue;
 321                 }
 322
 323                 break;
 324         }
 325
 326         return dig_port;
 327 }
 328
 329 static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
 330                                            struct i915_power_well *power_well,
 331                                            bool timeout_expected)
 332 {
 333         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 334         int pw_idx = power_well->desc->hsw.idx;
 335
 336         /* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */
 337         if (intel_de_wait_for_set(dev_priv, regs->driver,
 338                                   HSW_PWR_WELL_CTL_STATE(pw_idx), 1)) {
 339                 drm_dbg_kms(&dev_priv->drm, "%s power well enable timeout\n",
 340                             power_well->desc->name);
 341
 342                 drm_WARN_ON(&dev_priv->drm, !timeout_expected);
 343
 344         }
 345 }
 346
 347 static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv,
 348                                      const struct i915_power_well_regs *regs,
 349                                      int pw_idx)
 350 {
 351         u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
 352         u32 ret;
 353
 354         ret = intel_de_read(dev_priv, regs->bios) & req_mask ? 1 : 0;
 355         ret |= intel_de_read(dev_priv, regs->driver) & req_mask ? 2 : 0;
 356         if (regs->kvmr.reg)
 357                 ret |= intel_de_read(dev_priv, regs->kvmr) & req_mask ? 4 : 0;
 358         ret |= intel_de_read(dev_priv, regs->debug) & req_mask ? 8 : 0;
 359
 360         return ret;
 361 }
 362
 363 static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv,
 364                                             struct i915_power_well *power_well)
 365 {
 366         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 367         int pw_idx = power_well->desc->hsw.idx;
 368         bool disabled;
 369         u32 reqs;
 370
 371         /*
 372          * Bspec doesn't require waiting for PWs to get disabled, but still do
 373          * this for paranoia. The known cases where a PW will be forced on:
 374          * - a KVMR request on any power well via the KVMR request register
 375          * - a DMC request on PW1 and MISC_IO power wells via the BIOS and
 376          *   DEBUG request registers
 377          * Skip the wait in case any of the request bits are set and print a
 378          * diagnostic message.
 379          */
 380         wait_for((disabled = !(intel_de_read(dev_priv, regs->driver) &
 381                                HSW_PWR_WELL_CTL_STATE(pw_idx))) ||
 382                  (reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1);
 383         if (disabled)
 384                 return;
 385
 386         drm_dbg_kms(&dev_priv->drm,
 387                     "%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n",
 388                     power_well->desc->name,
 389                     !!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8));
 390 }
 391
 392 static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv,
 393                                            enum skl_power_gate pg)
 394 {
 395         /* Timeout 5us for PG#0, for other PGs 1us */
 396         drm_WARN_ON(&dev_priv->drm,
 397                     intel_de_wait_for_set(dev_priv, SKL_FUSE_STATUS,
 398                                           SKL_FUSE_PG_DIST_STATUS(pg), 1));
 399 }
 400
 401 static void hsw_power_well_enable(struct drm_i915_private *dev_priv,
 402                                   struct i915_power_well *power_well)
 403 {
 404         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 405         int pw_idx = power_well->desc->hsw.idx;
 406         u32 val;
 407
 408         if (power_well->desc->hsw.has_fuses) {
 409                 enum skl_power_gate pg;
 410
 411                 pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
 412                                                  SKL_PW_CTL_IDX_TO_PG(pw_idx);
 413                 /*
 414                  * For PW1 we have to wait both for the PW0/PG0 fuse state
 415                  * before enabling the power well and PW1/PG1's own fuse
 416                  * state after the enabling. For all other power wells with
 417                  * fuses we only have to wait for that PW/PG's fuse state
 418                  * after the enabling.
 419                  */
 420                 if (pg == SKL_PG1)
 421                         gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0);
 422         }
 423
 424         val = intel_de_read(dev_priv, regs->driver);
 425         intel_de_write(dev_priv, regs->driver,
 426                        val | HSW_PWR_WELL_CTL_REQ(pw_idx));
 427
 428         hsw_wait_for_power_well_enable(dev_priv, power_well, false);
 429
 430         /* Display WA #1178: cnl */
 431         if (IS_CANNONLAKE(dev_priv) &&
 432             pw_idx >= GLK_PW_CTL_IDX_AUX_B &&
 433             pw_idx <= CNL_PW_CTL_IDX_AUX_F) {
 434                 u32 val;
 435
 436                 val = intel_de_read(dev_priv, CNL_AUX_ANAOVRD1(pw_idx));
 437                 val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS;
 438                 intel_de_write(dev_priv, CNL_AUX_ANAOVRD1(pw_idx), val);
 439         }
 440
 441         if (power_well->desc->hsw.has_fuses) {
 442                 enum skl_power_gate pg;
 443
 444                 pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
 445                                                  SKL_PW_CTL_IDX_TO_PG(pw_idx);
 446                 gen9_wait_for_power_well_fuses(dev_priv, pg);
 447         }
 448
 449         hsw_power_well_post_enable(dev_priv,
 450                                    power_well->desc->hsw.irq_pipe_mask,
 451                                    power_well->desc->hsw.has_vga);
 452 }
 453
 454 static void hsw_power_well_disable(struct drm_i915_private *dev_priv,
 455                                    struct i915_power_well *power_well)
 456 {
 457         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 458         int pw_idx = power_well->desc->hsw.idx;
 459         u32 val;
 460
 461         hsw_power_well_pre_disable(dev_priv,
 462                                    power_well->desc->hsw.irq_pipe_mask);
 463
 464         val = intel_de_read(dev_priv, regs->driver);
 465         intel_de_write(dev_priv, regs->driver,
 466                        val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
 467         hsw_wait_for_power_well_disable(dev_priv, power_well);
 468 }
 469
 470 #define ICL_AUX_PW_TO_PHY(pw_idx)       ((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
 471
 472 static void
 473 icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
 474                                     struct i915_power_well *power_well)
 475 {
 476         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 477         int pw_idx = power_well->desc->hsw.idx;
 478         enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
 479         u32 val;
 480
 481         drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
 482
 483         val = intel_de_read(dev_priv, regs->driver);
 484         intel_de_write(dev_priv, regs->driver,
 485                        val | HSW_PWR_WELL_CTL_REQ(pw_idx));
 486
 487         if (INTEL_GEN(dev_priv) < 12) {
 488                 val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy));
 489                 intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy),
 490                                val | ICL_LANE_ENABLE_AUX);
 491         }
 492
 493         hsw_wait_for_power_well_enable(dev_priv, power_well, false);
 494
 495         /* Display WA #1178: icl */
 496         if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
 497             !intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
 498                 val = intel_de_read(dev_priv, ICL_AUX_ANAOVRD1(pw_idx));
 499                 val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
 500                 intel_de_write(dev_priv, ICL_AUX_ANAOVRD1(pw_idx), val);
 501         }
 502 }
 503
 504 static void
 505 icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
 506                                      struct i915_power_well *power_well)
 507 {
 508         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 509         int pw_idx = power_well->desc->hsw.idx;
 510         enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
 511         u32 val;
 512
 513         drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
 514
 515         val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy));
 516         intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy),
 517                        val & ~ICL_LANE_ENABLE_AUX);
 518
 519         val = intel_de_read(dev_priv, regs->driver);
 520         intel_de_write(dev_priv, regs->driver,
 521                        val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
 522
 523         hsw_wait_for_power_well_disable(dev_priv, power_well);
 524 }
 525
 526 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 527
 528 static u64 async_put_domains_mask(struct i915_power_domains *power_domains);
 529
 530 static int power_well_async_ref_count(struct drm_i915_private *dev_priv,
 531                                       struct i915_power_well *power_well)
 532 {
 533         int refs = hweight64(power_well->desc->domains &
 534                              async_put_domains_mask(&dev_priv->power_domains));
 535
 536         drm_WARN_ON(&dev_priv->drm, refs > power_well->count);
 537
 538         return refs;
 539 }
 540
 541 static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
 542                                         struct i915_power_well *power_well,
 543                                         struct intel_digital_port *dig_port)
 544 {
 545         /* Bypass the check if all references are released asynchronously */
 546         if (power_well_async_ref_count(dev_priv, power_well) ==
 547             power_well->count)
 548                 return;
 549
 550         if (drm_WARN_ON(&dev_priv->drm, !dig_port))
 551                 return;
 552
 553         if (INTEL_GEN(dev_priv) == 11 && dig_port->tc_legacy_port)
 554                 return;
 555
 556         drm_WARN_ON(&dev_priv->drm, !intel_tc_port_ref_held(dig_port));
 557 }
 558
 559 #else
 560
 561 static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
 562                                         struct i915_power_well *power_well,
 563                                         struct intel_digital_port *dig_port)
 564 {
 565 }
 566
 567 #endif
 568
 569 #define TGL_AUX_PW_TO_TC_PORT(pw_idx)   ((pw_idx) - TGL_PW_CTL_IDX_AUX_TC1)
 570
 571 static void icl_tc_cold_exit(struct drm_i915_private *i915)
 572 {
 573         int ret, tries = 0;
 574
 575         while (1) {
 576                 ret = sandybridge_pcode_write_timeout(i915,
 577                                                       ICL_PCODE_EXIT_TCCOLD,
 578                                                       0, 250, 1);
 579                 if (ret != -EAGAIN || ++tries == 3)
 580                         break;
 581                 msleep(1);
 582         }
 583
 584         /* Spec states that TC cold exit can take up to 1ms to complete */
 585         if (!ret)
 586                 msleep(1);
 587
 588         /* TODO: turn failure into a error as soon i915 CI updates ICL IFWI */
 589         drm_dbg_kms(&i915->drm, "TC cold block %s\n", ret ? "failed" :
 590                     "succeeded");
 591 }
 592
 593 static void
 594 icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
 595                                  struct i915_power_well *power_well)
 596 {
 597         enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well);
 598         struct intel_digital_port *dig_port = aux_ch_to_digital_port(dev_priv, aux_ch);
 599         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 600         bool is_tbt = power_well->desc->hsw.is_tc_tbt;
 601         bool timeout_expected;
 602         u32 val;
 603
 604         icl_tc_port_assert_ref_held(dev_priv, power_well, dig_port);
 605
 606         val = intel_de_read(dev_priv, DP_AUX_CH_CTL(aux_ch));
 607         val &= ~DP_AUX_CH_CTL_TBT_IO;
 608         if (is_tbt)
 609                 val |= DP_AUX_CH_CTL_TBT_IO;
 610         intel_de_write(dev_priv, DP_AUX_CH_CTL(aux_ch), val);
 611
 612         val = intel_de_read(dev_priv, regs->driver);
 613         intel_de_write(dev_priv, regs->driver,
 614                        val | HSW_PWR_WELL_CTL_REQ(power_well->desc->hsw.idx));
 615
 616         /*
 617          * An AUX timeout is expected if the TBT DP tunnel is down,
 618          * or need to enable AUX on a legacy TypeC port as part of the TC-cold
 619          * exit sequence.
 620          */
 621         timeout_expected = is_tbt;
 622         if (INTEL_GEN(dev_priv) == 11 && dig_port->tc_legacy_port) {
 623                 icl_tc_cold_exit(dev_priv);
 624                 timeout_expected = true;
 625         }
 626
 627         hsw_wait_for_power_well_enable(dev_priv, power_well, timeout_expected);
 628
 629         if (INTEL_GEN(dev_priv) >= 12 && !is_tbt) {
 630                 enum tc_port tc_port;
 631
 632                 tc_port = TGL_AUX_PW_TO_TC_PORT(power_well->desc->hsw.idx);
 633                 intel_de_write(dev_priv, HIP_INDEX_REG(tc_port),
 634                                HIP_INDEX_VAL(tc_port, 0x2));
 635
 636                 if (intel_de_wait_for_set(dev_priv, DKL_CMN_UC_DW_27(tc_port),
 637                                           DKL_CMN_UC_DW27_UC_HEALTH, 1))
 638                         drm_warn(&dev_priv->drm,
 639                                  "Timeout waiting TC uC health\n");
 640         }
 641 }
 642
 643 static void
 644 icl_tc_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
 645                                   struct i915_power_well *power_well)
 646 {
 647         enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well);
 648         struct intel_digital_port *dig_port = aux_ch_to_digital_port(dev_priv, aux_ch);
 649
 650         icl_tc_port_assert_ref_held(dev_priv, power_well, dig_port);
 651
 652         hsw_power_well_disable(dev_priv, power_well);
 653 }
 654
 655 static void
 656 icl_aux_power_well_enable(struct drm_i915_private *dev_priv,
 657                           struct i915_power_well *power_well)
 658 {
 659         int pw_idx = power_well->desc->hsw.idx;
 660         enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);  /* non-TBT only */
 661         bool is_tbt = power_well->desc->hsw.is_tc_tbt;
 662
 663         if (is_tbt || intel_phy_is_tc(dev_priv, phy))
 664                 return icl_tc_phy_aux_power_well_enable(dev_priv, power_well);
 665         else if (IS_ICELAKE(dev_priv))
 666                 return icl_combo_phy_aux_power_well_enable(dev_priv,
 667                                                            power_well);
 668         else
 669                 return hsw_power_well_enable(dev_priv, power_well);
 670 }
 671
 672 static void
 673 icl_aux_power_well_disable(struct drm_i915_private *dev_priv,
 674                            struct i915_power_well *power_well)
 675 {
 676         int pw_idx = power_well->desc->hsw.idx;
 677         enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);  /* non-TBT only */
 678         bool is_tbt = power_well->desc->hsw.is_tc_tbt;
 679
 680         if (is_tbt || intel_phy_is_tc(dev_priv, phy))
 681                 return icl_tc_phy_aux_power_well_disable(dev_priv, power_well);
 682         else if (IS_ICELAKE(dev_priv))
 683                 return icl_combo_phy_aux_power_well_disable(dev_priv,
 684                                                             power_well);
 685         else
 686                 return hsw_power_well_disable(dev_priv, power_well);
 687 }
 688
 689 /*
 690  * We should only use the power well if we explicitly asked the hardware to
 691  * enable it, so check if it's enabled and also check if we've requested it to
 692  * be enabled.
 693  */
 694 static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv,
 695                                    struct i915_power_well *power_well)
 696 {
 697         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
 698         enum i915_power_well_id id = power_well->desc->id;
 699         int pw_idx = power_well->desc->hsw.idx;
 700         u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) |
 701                    HSW_PWR_WELL_CTL_STATE(pw_idx);
 702         u32 val;
 703
 704         val = intel_de_read(dev_priv, regs->driver);
 705
 706         /*
 707          * On GEN9 big core due to a DMC bug the driver's request bits for PW1
 708          * and the MISC_IO PW will be not restored, so check instead for the
 709          * BIOS's own request bits, which are forced-on for these power wells
 710          * when exiting DC5/6.
 711          */
 712         if (IS_GEN(dev_priv, 9) && !IS_GEN9_LP(dev_priv) &&
 713             (id == SKL_DISP_PW_1 || id == SKL_DISP_PW_MISC_IO))
 714                 val |= intel_de_read(dev_priv, regs->bios);
 715
 716         return (val & mask) == mask;
 717 }
 718
 719 static void assert_can_enable_dc9(struct drm_i915_private *dev_priv)
 720 {
 721         drm_WARN_ONCE(&dev_priv->drm,
 722                       (intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC9),
 723                       "DC9 already programmed to be enabled.\n");
 724         drm_WARN_ONCE(&dev_priv->drm,
 725                       intel_de_read(dev_priv, DC_STATE_EN) &
 726                       DC_STATE_EN_UPTO_DC5,
 727                       "DC5 still not disabled to enable DC9.\n");
 728         drm_WARN_ONCE(&dev_priv->drm,
 729                       intel_de_read(dev_priv, HSW_PWR_WELL_CTL2) &
 730                       HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2),
 731                       "Power well 2 on.\n");
 732         drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv),
 733                       "Interrupts not disabled yet.\n");
 734
 735          /*
 736           * TODO: check for the following to verify the conditions to enter DC9
 737           * state are satisfied:
 738           * 1] Check relevant display engine registers to verify if mode set
 739           * disable sequence was followed.
 740           * 2] Check if display uninitialize sequence is initialized.
 741           */
 742 }
 743
 744 static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
 745 {
 746         drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv),
 747                       "Interrupts not disabled yet.\n");
 748         drm_WARN_ONCE(&dev_priv->drm,
 749                       intel_de_read(dev_priv, DC_STATE_EN) &
 750                       DC_STATE_EN_UPTO_DC5,
 751                       "DC5 still not disabled.\n");
 752
 753          /*
 754           * TODO: check for the following to verify DC9 state was indeed
 755           * entered before programming to disable it:
 756           * 1] Check relevant display engine registers to verify if mode
 757           *  set disable sequence was followed.
 758           * 2] Check if display uninitialize sequence is initialized.
 759           */
 760 }
 761
 762 static void gen9_write_dc_state(struct drm_i915_private *dev_priv,
 763                                 u32 state)
 764 {
 765         int rewrites = 0;
 766         int rereads = 0;
 767         u32 v;
 768
 769         intel_de_write(dev_priv, DC_STATE_EN, state);
 770
 771         /* It has been observed that disabling the dc6 state sometimes
 772          * doesn't stick and dmc keeps returning old value. Make sure
 773          * the write really sticks enough times and also force rewrite until
 774          * we are confident that state is exactly what we want.
 775          */
 776         do  {
 777                 v = intel_de_read(dev_priv, DC_STATE_EN);
 778
 779                 if (v != state) {
 780                         intel_de_write(dev_priv, DC_STATE_EN, state);
 781                         rewrites++;
 782                         rereads = 0;
 783                 } else if (rereads++ > 5) {
 784                         break;
 785                 }
 786
 787         } while (rewrites < 100);
 788
 789         if (v != state)
 790                 drm_err(&dev_priv->drm,
 791                         "Writing dc state to 0x%x failed, now 0x%x\n",
 792                         state, v);
 793
 794         /* Most of the times we need one retry, avoid spam */
 795         if (rewrites > 1)
 796                 drm_dbg_kms(&dev_priv->drm,
 797                             "Rewrote dc state to 0x%x %d times\n",
 798                             state, rewrites);
 799 }
 800
 801 static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
 802 {
 803         u32 mask;
 804
 805         mask = DC_STATE_EN_UPTO_DC5;
 806
 807         if (INTEL_GEN(dev_priv) >= 12)
 808                 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6
 809                                           | DC_STATE_EN_DC9;
 810         else if (IS_GEN(dev_priv, 11))
 811                 mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
 812         else if (IS_GEN9_LP(dev_priv))
 813                 mask |= DC_STATE_EN_DC9;
 814         else
 815                 mask |= DC_STATE_EN_UPTO_DC6;
 816
 817         return mask;
 818 }
 819
 820 static void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv)
 821 {
 822         u32 val;
 823
 824         val = intel_de_read(dev_priv, DC_STATE_EN) & gen9_dc_mask(dev_priv);
 825
 826         drm_dbg_kms(&dev_priv->drm,
 827                     "Resetting DC state tracking from %02x to %02x\n",
 828                     dev_priv->csr.dc_state, val);
 829         dev_priv->csr.dc_state = val;
 830 }
 831
 832 /**
 833  * gen9_set_dc_state - set target display C power state
 834  * @dev_priv: i915 device instance
 835  * @state: target DC power state
 836  * - DC_STATE_DISABLE
 837  * - DC_STATE_EN_UPTO_DC5
 838  * - DC_STATE_EN_UPTO_DC6
 839  * - DC_STATE_EN_DC9
 840  *
 841  * Signal to DMC firmware/HW the target DC power state passed in @state.
 842  * DMC/HW can turn off individual display clocks and power rails when entering
 843  * a deeper DC power state (higher in number) and turns these back when exiting
 844  * that state to a shallower power state (lower in number). The HW will decide
 845  * when to actually enter a given state on an on-demand basis, for instance
 846  * depending on the active state of display pipes. The state of display
 847  * registers backed by affected power rails are saved/restored as needed.
 848  *
 849  * Based on the above enabling a deeper DC power state is asynchronous wrt.
 850  * enabling it. Disabling a deeper power state is synchronous: for instance
 851  * setting %DC_STATE_DISABLE won't complete until all HW resources are turned
 852  * back on and register state is restored. This is guaranteed by the MMIO write
 853  * to DC_STATE_EN blocking until the state is restored.
 854  */
 855 static void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state)
 856 {
 857         u32 val;
 858         u32 mask;
 859
 860         if (drm_WARN_ON_ONCE(&dev_priv->drm,
 861                              state & ~dev_priv->csr.allowed_dc_mask))
 862                 state &= dev_priv->csr.allowed_dc_mask;
 863
 864         val = intel_de_read(dev_priv, DC_STATE_EN);
 865         mask = gen9_dc_mask(dev_priv);
 866         drm_dbg_kms(&dev_priv->drm, "Setting DC state from %02x to %02x\n",
 867                     val & mask, state);
 868
 869         /* Check if DMC is ignoring our DC state requests */
 870         if ((val & mask) != dev_priv->csr.dc_state)
 871                 drm_err(&dev_priv->drm, "DC state mismatch (0x%x -> 0x%x)\n",
 872                         dev_priv->csr.dc_state, val & mask);
 873
 874         val &= ~mask;
 875         val |= state;
 876
 877         gen9_write_dc_state(dev_priv, val);
 878
 879         dev_priv->csr.dc_state = val & mask;
 880 }
 881
 882 static u32
 883 sanitize_target_dc_state(struct drm_i915_private *dev_priv,
 884                          u32 target_dc_state)
 885 {
 886         u32 states[] = {
 887                 DC_STATE_EN_UPTO_DC6,
 888                 DC_STATE_EN_UPTO_DC5,
 889                 DC_STATE_EN_DC3CO,
 890                 DC_STATE_DISABLE,
 891         };
 892         int i;
 893
 894         for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {
 895                 if (target_dc_state != states[i])
 896                         continue;
 897
 898                 if (dev_priv->csr.allowed_dc_mask & target_dc_state)
 899                         break;
 900
 901                 target_dc_state = states[i + 1];
 902         }
 903
 904         return target_dc_state;
 905 }
 906
 907 static void tgl_enable_dc3co(struct drm_i915_private *dev_priv)
 908 {
 909         drm_dbg_kms(&dev_priv->drm, "Enabling DC3CO\n");
 910         gen9_set_dc_state(dev_priv, DC_STATE_EN_DC3CO);
 911 }
 912
 913 static void tgl_disable_dc3co(struct drm_i915_private *dev_priv)
 914 {
 915         u32 val;
 916
 917         drm_dbg_kms(&dev_priv->drm, "Disabling DC3CO\n");
 918         val = intel_de_read(dev_priv, DC_STATE_EN);
 919         val &= ~DC_STATE_DC3CO_STATUS;
 920         intel_de_write(dev_priv, DC_STATE_EN, val);
 921         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
 922         /*
 923          * Delay of 200us DC3CO Exit time B.Spec 49196
 924          */
 925         usleep_range(200, 210);
 926 }
 927
 928 static void bxt_enable_dc9(struct drm_i915_private *dev_priv)
 929 {
 930         assert_can_enable_dc9(dev_priv);
 931
 932         drm_dbg_kms(&dev_priv->drm, "Enabling DC9\n");
 933         /*
 934          * Power sequencer reset is not needed on
 935          * platforms with South Display Engine on PCH,
 936          * because PPS registers are always on.
 937          */
 938         if (!HAS_PCH_SPLIT(dev_priv))
 939                 intel_pps_reset_all(dev_priv);
 940         gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);
 941 }
 942
 943 static void bxt_disable_dc9(struct drm_i915_private *dev_priv)
 944 {
 945         assert_can_disable_dc9(dev_priv);
 946
 947         drm_dbg_kms(&dev_priv->drm, "Disabling DC9\n");
 948
 949         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
 950
 951         intel_pps_unlock_regs_wa(dev_priv);
 952 }
 953
 954 static void assert_csr_loaded(struct drm_i915_private *dev_priv)
 955 {
 956         drm_WARN_ONCE(&dev_priv->drm,
 957                       !intel_de_read(dev_priv, CSR_PROGRAM(0)),
 958                       "CSR program storage start is NULL\n");
 959         drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, CSR_SSP_BASE),
 960                       "CSR SSP Base Not fine\n");
 961         drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, CSR_HTP_SKL),
 962                       "CSR HTP Not fine\n");
 963 }
 964
 965 static struct i915_power_well *
 966 lookup_power_well(struct drm_i915_private *dev_priv,
 967                   enum i915_power_well_id power_well_id)
 968 {
 969         struct i915_power_well *power_well;
 970
 971         for_each_power_well(dev_priv, power_well)
 972                 if (power_well->desc->id == power_well_id)
 973                         return power_well;
 974
 975         /*
 976          * It's not feasible to add error checking code to the callers since
 977          * this condition really shouldn't happen and it doesn't even make sense
 978          * to abort things like display initialization sequences. Just return
 979          * the first power well and hope the WARN gets reported so we can fix
 980          * our driver.
 981          */
 982         drm_WARN(&dev_priv->drm, 1,
 983                  "Power well %d not defined for this platform\n",
 984                  power_well_id);
 985         return &dev_priv->power_domains.power_wells[0];
 986 }
 987
 988 /**
 989  * intel_display_power_set_target_dc_state - Set target dc state.
 990  * @dev_priv: i915 device
 991  * @state: state which needs to be set as target_dc_state.
 992  *
 993  * This function set the "DC off" power well target_dc_state,
 994  * based upon this target_dc_stste, "DC off" power well will
 995  * enable desired DC state.
 996  */
 997 void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
 998                                              u32 state)
 999 {
1000         struct i915_power_well *power_well;
1001         bool dc_off_enabled;
1002         struct i915_power_domains *power_domains = &dev_priv->power_domains;
1003
1004         mutex_lock(&power_domains->lock);
1005         power_well = lookup_power_well(dev_priv, SKL_DISP_DC_OFF);
1006
1007         if (drm_WARN_ON(&dev_priv->drm, !power_well))
1008                 goto unlock;
1009
1010         state = sanitize_target_dc_state(dev_priv, state);
1011
1012         if (state == dev_priv->csr.target_dc_state)
1013                 goto unlock;
1014
1015         dc_off_enabled = power_well->desc->ops->is_enabled(dev_priv,
1016                                                            power_well);
1017         /*
1018          * If DC off power well is disabled, need to enable and disable the
1019          * DC off power well to effect target DC state.
1020          */
1021         if (!dc_off_enabled)
1022                 power_well->desc->ops->enable(dev_priv, power_well);
1023
1024         dev_priv->csr.target_dc_state = state;
1025
1026         if (!dc_off_enabled)
1027                 power_well->desc->ops->disable(dev_priv, power_well);
1028
1029 unlock:
1030         mutex_unlock(&power_domains->lock);
1031 }
1032
1033 static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
1034 {
1035         enum i915_power_well_id high_pg;
1036
1037         /* Power wells at this level and above must be disabled for DC5 entry */
1038         if (INTEL_GEN(dev_priv) >= 12)
1039                 high_pg = ICL_DISP_PW_3;
1040         else
1041                 high_pg = SKL_DISP_PW_2;
1042
1043         drm_WARN_ONCE(&dev_priv->drm,
1044                       intel_display_power_well_is_enabled(dev_priv, high_pg),
1045                       "Power wells above platform's DC5 limit still enabled.\n");
1046
1047         drm_WARN_ONCE(&dev_priv->drm,
1048                       (intel_de_read(dev_priv, DC_STATE_EN) &
1049                        DC_STATE_EN_UPTO_DC5),
1050                       "DC5 already programmed to be enabled.\n");
1051         assert_rpm_wakelock_held(&dev_priv->runtime_pm);
1052
1053         assert_csr_loaded(dev_priv);
1054 }
1055
1056 static void gen9_enable_dc5(struct drm_i915_private *dev_priv)
1057 {
1058         assert_can_enable_dc5(dev_priv);
1059
1060         drm_dbg_kms(&dev_priv->drm, "Enabling DC5\n");
1061
1062         /* Wa Display #1183: skl,kbl,cfl */
1063         if (IS_GEN9_BC(dev_priv))
1064                 intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1,
1065                                intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT);
1066
1067         gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
1068 }
1069
1070 static void assert_can_enable_dc6(struct drm_i915_private *dev_priv)
1071 {
1072         drm_WARN_ONCE(&dev_priv->drm,
1073                       intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
1074                       "Backlight is not disabled.\n");
1075         drm_WARN_ONCE(&dev_priv->drm,
1076                       (intel_de_read(dev_priv, DC_STATE_EN) &
1077                        DC_STATE_EN_UPTO_DC6),
1078                       "DC6 already programmed to be enabled.\n");
1079
1080         assert_csr_loaded(dev_priv);
1081 }
1082
1083 static void skl_enable_dc6(struct drm_i915_private *dev_priv)
1084 {
1085         assert_can_enable_dc6(dev_priv);
1086
1087         drm_dbg_kms(&dev_priv->drm, "Enabling DC6\n");
1088
1089         /* Wa Display #1183: skl,kbl,cfl */
1090         if (IS_GEN9_BC(dev_priv))
1091                 intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1,
1092                                intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT);
1093
1094         gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
1095 }
1096
1097 static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
1098                                    struct i915_power_well *power_well)
1099 {
1100         const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
1101         int pw_idx = power_well->desc->hsw.idx;
1102         u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
1103         u32 bios_req = intel_de_read(dev_priv, regs->bios);
1104
1105         /* Take over the request bit if set by BIOS. */
1106         if (bios_req & mask) {
1107                 u32 drv_req = intel_de_read(dev_priv, regs->driver);
1108
1109                 if (!(drv_req & mask))
1110                         intel_de_write(dev_priv, regs->driver, drv_req | mask);
1111                 intel_de_write(dev_priv, regs->bios, bios_req & ~mask);
1112         }
1113 }
1114
1115 static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
1116                                            struct i915_power_well *power_well)
1117 {
1118         bxt_ddi_phy_init(dev_priv, power_well->desc->bxt.phy);
1119 }
1120
1121 static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
1122                                             struct i915_power_well *power_well)
1123 {
1124         bxt_ddi_phy_uninit(dev_priv, power_well->desc->bxt.phy);
1125 }
1126
1127 static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv,
1128                                             struct i915_power_well *power_well)
1129 {
1130         return bxt_ddi_phy_is_enabled(dev_priv, power_well->desc->bxt.phy);
1131 }
1132
1133 static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv)
1134 {
1135         struct i915_power_well *power_well;
1136
1137         power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A);
1138         if (power_well->count > 0)
1139                 bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
1140
1141         power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
1142         if (power_well->count > 0)
1143                 bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
1144
1145         if (IS_GEMINILAKE(dev_priv)) {
1146                 power_well = lookup_power_well(dev_priv,
1147                                                GLK_DISP_PW_DPIO_CMN_C);
1148                 if (power_well->count > 0)
1149                         bxt_ddi_phy_verify_state(dev_priv,
1150                                                  power_well->desc->bxt.phy);
1151         }
1152 }
1153
1154 static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv,
1155                                            struct i915_power_well *power_well)
1156 {
1157         return ((intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC3CO) == 0 &&
1158                 (intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0);
1159 }
1160
1161 static void gen9_assert_dbuf_enabled(struct drm_i915_private *dev_priv)
1162 {
1163         u8 hw_enabled_dbuf_slices = intel_enabled_dbuf_slices_mask(dev_priv);
1164         u8 enabled_dbuf_slices = dev_priv->dbuf.enabled_slices;
1165
1166         drm_WARN(&dev_priv->drm,
1167                  hw_enabled_dbuf_slices != enabled_dbuf_slices,
1168                  "Unexpected DBuf power power state (0x%08x, expected 0x%08x)\n",
1169                  hw_enabled_dbuf_slices,
1170                  enabled_dbuf_slices);
1171 }
1172
1173 static void gen9_disable_dc_states(struct drm_i915_private *dev_priv)
1174 {
1175         struct intel_cdclk_config cdclk_config = {};
1176
1177         if (dev_priv->csr.target_dc_state == DC_STATE_EN_DC3CO) {
1178                 tgl_disable_dc3co(dev_priv);
1179                 return;
1180         }
1181
1182         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
1183
1184         dev_priv->display.get_cdclk(dev_priv, &cdclk_config);
1185         /* Can't read out voltage_level so can't use intel_cdclk_changed() */
1186         drm_WARN_ON(&dev_priv->drm,
1187                     intel_cdclk_needs_modeset(&dev_priv->cdclk.hw,
1188                                               &cdclk_config));
1189
1190         gen9_assert_dbuf_enabled(dev_priv);
1191
1192         if (IS_GEN9_LP(dev_priv))
1193                 bxt_verify_ddi_phy_power_wells(dev_priv);
1194
1195         if (INTEL_GEN(dev_priv) >= 11)
1196                 /*
1197                  * DMC retains HW context only for port A, the other combo
1198                  * PHY's HW context for port B is lost after DC transitions,
1199                  * so we need to restore it manually.
1200                  */
1201                 intel_combo_phy_init(dev_priv);
1202 }
1203
1204 static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
1205                                           struct i915_power_well *power_well)
1206 {
1207         gen9_disable_dc_states(dev_priv);
1208 }
1209
1210 static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
1211                                            struct i915_power_well *power_well)
1212 {
1213         if (!dev_priv->csr.dmc_payload)
1214                 return;
1215
1216         switch (dev_priv->csr.target_dc_state) {
1217         case DC_STATE_EN_DC3CO:
1218                 tgl_enable_dc3co(dev_priv);
1219                 break;
1220         case DC_STATE_EN_UPTO_DC6:
1221                 skl_enable_dc6(dev_priv);
1222                 break;
1223         case DC_STATE_EN_UPTO_DC5:
1224                 gen9_enable_dc5(dev_priv);
1225                 break;
1226         }
1227 }
1228
1229 static void i9xx_power_well_sync_hw_noop(struct drm_i915_private *dev_priv,
1230                                          struct i915_power_well *power_well)
1231 {
1232 }
1233
1234 static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv,
1235                                            struct i915_power_well *power_well)
1236 {
1237 }
1238
1239 static bool i9xx_always_on_power_well_enabled(struct drm_i915_private *dev_priv,
1240                                              struct i915_power_well *power_well)
1241 {
1242         return true;
1243 }
1244
1245 static void i830_pipes_power_well_enable(struct drm_i915_private *dev_priv,
1246                                          struct i915_power_well *power_well)
1247 {
1248         if ((intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE) == 0)
1249                 i830_enable_pipe(dev_priv, PIPE_A);
1250         if ((intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE) == 0)
1251                 i830_enable_pipe(dev_priv, PIPE_B);
1252 }
1253
1254 static void i830_pipes_power_well_disable(struct drm_i915_private *dev_priv,
1255                                           struct i915_power_well *power_well)
1256 {
1257         i830_disable_pipe(dev_priv, PIPE_B);
1258         i830_disable_pipe(dev_priv, PIPE_A);
1259 }
1260
1261 static bool i830_pipes_power_well_enabled(struct drm_i915_private *dev_priv,
1262                                           struct i915_power_well *power_well)
1263 {
1264         return intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE &&
1265                 intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE;
1266 }
1267
1268 static void i830_pipes_power_well_sync_hw(struct drm_i915_private *dev_priv,
1269                                           struct i915_power_well *power_well)
1270 {
1271         if (power_well->count > 0)
1272                 i830_pipes_power_well_enable(dev_priv, power_well);
1273         else
1274                 i830_pipes_power_well_disable(dev_priv, power_well);
1275 }
1276
1277 static void vlv_set_power_well(struct drm_i915_private *dev_priv,
1278                                struct i915_power_well *power_well, bool enable)
1279 {
1280         int pw_idx = power_well->desc->vlv.idx;
1281         u32 mask;
1282         u32 state;
1283         u32 ctrl;
1284
1285         mask = PUNIT_PWRGT_MASK(pw_idx);
1286         state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) :
1287                          PUNIT_PWRGT_PWR_GATE(pw_idx);
1288
1289         vlv_punit_get(dev_priv);
1290
1291 #define COND \
1292         ((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
1293
1294         if (COND)
1295                 goto out;
1296
1297         ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL);
1298         ctrl &= ~mask;
1299         ctrl |= state;
1300         vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl);
1301
1302         if (wait_for(COND, 100))
1303                 drm_err(&dev_priv->drm,
1304                         "timeout setting power well state %08x (%08x)\n",
1305                         state,
1306                         vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL));
1307
1308 #undef COND
1309
1310 out:
1311         vlv_punit_put(dev_priv);
1312 }
1313
1314 static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
1315                                   struct i915_power_well *power_well)
1316 {
1317         vlv_set_power_well(dev_priv, power_well, true);
1318 }
1319
1320 static void vlv_power_well_disable(struct drm_i915_private *dev_priv,
1321                                    struct i915_power_well *power_well)
1322 {
1323         vlv_set_power_well(dev_priv, power_well, false);
1324 }
1325
1326 static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
1327                                    struct i915_power_well *power_well)
1328 {
1329         int pw_idx = power_well->desc->vlv.idx;
1330         bool enabled = false;
1331         u32 mask;
1332         u32 state;
1333         u32 ctrl;
1334
1335         mask = PUNIT_PWRGT_MASK(pw_idx);
1336         ctrl = PUNIT_PWRGT_PWR_ON(pw_idx);
1337
1338         vlv_punit_get(dev_priv);
1339
1340         state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
1341         /*
1342          * We only ever set the power-on and power-gate states, anything
1343          * else is unexpected.
1344          */
1345         drm_WARN_ON(&dev_priv->drm, state != PUNIT_PWRGT_PWR_ON(pw_idx) &&
1346                     state != PUNIT_PWRGT_PWR_GATE(pw_idx));
1347         if (state == ctrl)
1348                 enabled = true;
1349
1350         /*
1351          * A transient state at this point would mean some unexpected party
1352          * is poking at the power controls too.
1353          */
1354         ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
1355         drm_WARN_ON(&dev_priv->drm, ctrl != state);
1356
1357         vlv_punit_put(dev_priv);
1358
1359         return enabled;
1360 }
1361
1362 static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv)
1363 {
1364         u32 val;
1365
1366         /*
1367          * On driver load, a pipe may be active and driving a DSI display.
1368          * Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck
1369          * (and never recovering) in this case. intel_dsi_post_disable() will
1370          * clear it when we turn off the display.
1371          */
1372         val = intel_de_read(dev_priv, DSPCLK_GATE_D);
1373         val &= DPOUNIT_CLOCK_GATE_DISABLE;
1374         val |= VRHUNIT_CLOCK_GATE_DISABLE;
1375         intel_de_write(dev_priv, DSPCLK_GATE_D, val);
1376
1377         /*
1378          * Disable trickle feed and enable pnd deadline calculation
1379          */
1380         intel_de_write(dev_priv, MI_ARB_VLV,
1381                        MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);
1382         intel_de_write(dev_priv, CBR1_VLV, 0);
1383
1384         drm_WARN_ON(&dev_priv->drm, RUNTIME_INFO(dev_priv)->rawclk_freq == 0);
1385         intel_de_write(dev_priv, RAWCLK_FREQ_VLV,
1386                        DIV_ROUND_CLOSEST(RUNTIME_INFO(dev_priv)->rawclk_freq,
1387                                          1000));
1388 }
1389
1390 static void vlv_display_power_well_init(struct drm_i915_private *dev_priv)
1391 {
1392         struct intel_encoder *encoder;
1393         enum pipe pipe;
1394
1395         /*
1396          * Enable the CRI clock source so we can get at the
1397          * display and the reference clock for VGA
1398          * hotplug / manual detection. Supposedly DSI also
1399          * needs the ref clock up and running.
1400          *
1401          * CHV DPLL B/C have some issues if VGA mode is enabled.
1402          */
1403         for_each_pipe(dev_priv, pipe) {
1404                 u32 val = intel_de_read(dev_priv, DPLL(pipe));
1405
1406                 val |= DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1407                 if (pipe != PIPE_A)
1408                         val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1409
1410                 intel_de_write(dev_priv, DPLL(pipe), val);
1411         }
1412
1413         vlv_init_display_clock_gating(dev_priv);
1414
1415         spin_lock_irq(&dev_priv->irq_lock);
1416         valleyview_enable_display_irqs(dev_priv);
1417         spin_unlock_irq(&dev_priv->irq_lock);
1418
1419         /*
1420          * During driver initialization/resume we can avoid restoring the
1421          * part of the HW/SW state that will be inited anyway explicitly.
1422          */
1423         if (dev_priv->power_domains.initializing)
1424                 return;
1425
1426         intel_hpd_init(dev_priv);
1427         intel_hpd_poll_disable(dev_priv);
1428
1429         /* Re-enable the ADPA, if we have one */
1430         for_each_intel_encoder(&dev_priv->drm, encoder) {
1431                 if (encoder->type == INTEL_OUTPUT_ANALOG)
1432                         intel_crt_reset(&encoder->base);
1433         }
1434
1435         intel_vga_redisable_power_on(dev_priv);
1436
1437         intel_pps_unlock_regs_wa(dev_priv);
1438 }
1439
1440 static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv)
1441 {
1442         spin_lock_irq(&dev_priv->irq_lock);
1443         valleyview_disable_display_irqs(dev_priv);
1444         spin_unlock_irq(&dev_priv->irq_lock);
1445
1446         /* make sure we're done processing display irqs */
1447         intel_synchronize_irq(dev_priv);
1448
1449         intel_pps_reset_all(dev_priv);
1450
1451         /* Prevent us from re-enabling polling on accident in late suspend */
1452         if (!dev_priv->drm.dev->power.is_suspended)
1453                 intel_hpd_poll_enable(dev_priv);
1454 }
1455
1456 static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,
1457                                           struct i915_power_well *power_well)
1458 {
1459         vlv_set_power_well(dev_priv, power_well, true);
1460
1461         vlv_display_power_well_init(dev_priv);
1462 }
1463
1464 static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv,
1465                                            struct i915_power_well *power_well)
1466 {
1467         vlv_display_power_well_deinit(dev_priv);
1468
1469         vlv_set_power_well(dev_priv, power_well, false);
1470 }
1471
1472 static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
1473                                            struct i915_power_well *power_well)
1474 {
1475         /* since ref/cri clock was enabled */
1476         udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
1477
1478         vlv_set_power_well(dev_priv, power_well, true);
1479
1480         /*
1481          * From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx -
1482          *  6.  De-assert cmn_reset/side_reset. Same as VLV X0.
1483          *   a. GUnit 0x2110 bit[0] set to 1 (def 0)
1484          *   b. The other bits such as sfr settings / modesel may all
1485          *      be set to 0.
1486          *
1487          * This should only be done on init and resume from S3 with
1488          * both PLLs disabled, or we risk losing DPIO and PLL
1489          * synchronization.
1490          */
1491         intel_de_write(dev_priv, DPIO_CTL,
1492                        intel_de_read(dev_priv, DPIO_CTL) | DPIO_CMNRST);
1493 }
1494
1495 static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
1496                                             struct i915_power_well *power_well)
1497 {
1498         enum pipe pipe;
1499
1500         for_each_pipe(dev_priv, pipe)
1501                 assert_pll_disabled(dev_priv, pipe);
1502
1503         /* Assert common reset */
1504         intel_de_write(dev_priv, DPIO_CTL,
1505                        intel_de_read(dev_priv, DPIO_CTL) & ~DPIO_CMNRST);
1506
1507         vlv_set_power_well(dev_priv, power_well, false);
1508 }
1509
1510 #define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
1511
1512 #define BITS_SET(val, bits) (((val) & (bits)) == (bits))
1513
1514 static void assert_chv_phy_status(struct drm_i915_private *dev_priv)
1515 {
1516         struct i915_power_well *cmn_bc =
1517                 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
1518         struct i915_power_well *cmn_d =
1519                 lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
1520         u32 phy_control = dev_priv->chv_phy_control;
1521         u32 phy_status = 0;
1522         u32 phy_status_mask = 0xffffffff;
1523
1524         /*
1525          * The BIOS can leave the PHY is some weird state
1526          * where it doesn't fully power down some parts.
1527          * Disable the asserts until the PHY has been fully
1528          * reset (ie. the power well has been disabled at
1529          * least once).
1530          */
1531         if (!dev_priv->chv_phy_assert[DPIO_PHY0])
1532                 phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0) |
1533                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0) |
1534                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1) |
1535                                      PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1) |
1536                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0) |
1537                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1));
1538
1539         if (!dev_priv->chv_phy_assert[DPIO_PHY1])
1540                 phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0) |
1541                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) |
1542                                      PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1));
1543
1544         if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
1545                 phy_status |= PHY_POWERGOOD(DPIO_PHY0);
1546
1547                 /* this assumes override is only used to enable lanes */
1548                 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0)) == 0)
1549                         phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0);
1550
1551                 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1)) == 0)
1552                         phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1);
1553
1554                 /* CL1 is on whenever anything is on in either channel */
1555                 if (BITS_SET(phy_control,
1556                              PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0) |
1557                              PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)))
1558                         phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0);
1559
1560                 /*
1561                  * The DPLLB check accounts for the pipe B + port A usage
1562                  * with CL2 powered up but all the lanes in the second channel
1563                  * powered down.
1564                  */
1565                 if (BITS_SET(phy_control,
1566                              PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)) &&
1567                     (intel_de_read(dev_priv, DPLL(PIPE_B)) & DPLL_VCO_ENABLE) == 0)
1568                         phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1);
1569
1570                 if (BITS_SET(phy_control,
1571                              PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH0)))
1572                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0);
1573                 if (BITS_SET(phy_control,
1574                              PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH0)))
1575                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1);
1576
1577                 if (BITS_SET(phy_control,
1578                              PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH1)))
1579                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0);
1580                 if (BITS_SET(phy_control,
1581                              PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH1)))
1582                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1);
1583         }
1584
1585         if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
1586                 phy_status |= PHY_POWERGOOD(DPIO_PHY1);
1587
1588                 /* this assumes override is only used to enable lanes */
1589                 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0)) == 0)
1590                         phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0);
1591
1592                 if (BITS_SET(phy_control,
1593                              PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0)))
1594                         phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0);
1595
1596                 if (BITS_SET(phy_control,
1597                              PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY1, DPIO_CH0)))
1598                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0);
1599                 if (BITS_SET(phy_control,
1600                              PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY1, DPIO_CH0)))
1601                         phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1);
1602         }
1603
1604         phy_status &= phy_status_mask;
1605
1606         /*
1607          * The PHY may be busy with some initial calibration and whatnot,
1608          * so the power state can take a while to actually change.
1609          */
1610         if (intel_de_wait_for_register(dev_priv, DISPLAY_PHY_STATUS,
1611                                        phy_status_mask, phy_status, 10))
1612                 drm_err(&dev_priv->drm,
1613                         "Unexpected PHY_STATUS 0x%08x, expected 0x%08x (PHY_CONTROL=0x%08x)\n",
1614                         intel_de_read(dev_priv, DISPLAY_PHY_STATUS) & phy_status_mask,
1615                         phy_status, dev_priv->chv_phy_control);
1616 }
1617
1618 #undef BITS_SET
1619
1620 static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
1621                                            struct i915_power_well *power_well)
1622 {
1623         enum dpio_phy phy;
1624         enum pipe pipe;
1625         u32 tmp;
1626
1627         drm_WARN_ON_ONCE(&dev_priv->drm,
1628                          power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
1629                          power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
1630
1631         if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
1632                 pipe = PIPE_A;
1633                 phy = DPIO_PHY0;
1634         } else {
1635                 pipe = PIPE_C;
1636                 phy = DPIO_PHY1;
1637         }
1638
1639         /* since ref/cri clock was enabled */
1640         udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
1641         vlv_set_power_well(dev_priv, power_well, true);
1642
1643         /* Poll for phypwrgood signal */
1644         if (intel_de_wait_for_set(dev_priv, DISPLAY_PHY_STATUS,
1645                                   PHY_POWERGOOD(phy), 1))
1646                 drm_err(&dev_priv->drm, "Display PHY %d is not power up\n",
1647                         phy);
1648
1649         vlv_dpio_get(dev_priv);
1650
1651         /* Enable dynamic power down */
1652         tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
1653         tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN |
1654                 DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
1655         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
1656
1657         if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
1658                 tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
1659                 tmp |= DPIO_DYNPWRDOWNEN_CH1;
1660                 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
1661         } else {
1662                 /*
1663                  * Force the non-existing CL2 off. BXT does this
1664                  * too, so maybe it saves some power even though
1665                  * CL2 doesn't exist?
1666                  */
1667                 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
1668                 tmp |= DPIO_CL2_LDOFUSE_PWRENB;
1669                 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp);
1670         }
1671
1672         vlv_dpio_put(dev_priv);
1673
1674         dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy);
1675         intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
1676                        dev_priv->chv_phy_control);
1677
1678         drm_dbg_kms(&dev_priv->drm,
1679                     "Enabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
1680                     phy, dev_priv->chv_phy_control);
1681
1682         assert_chv_phy_status(dev_priv);
1683 }
1684
1685 static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
1686                                             struct i915_power_well *power_well)
1687 {
1688         enum dpio_phy phy;
1689
1690         drm_WARN_ON_ONCE(&dev_priv->drm,
1691                          power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
1692                          power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
1693
1694         if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
1695                 phy = DPIO_PHY0;
1696                 assert_pll_disabled(dev_priv, PIPE_A);
1697                 assert_pll_disabled(dev_priv, PIPE_B);
1698         } else {
1699                 phy = DPIO_PHY1;
1700                 assert_pll_disabled(dev_priv, PIPE_C);
1701         }
1702
1703         dev_priv->chv_phy_control &= ~PHY_COM_LANE_RESET_DEASSERT(phy);
1704         intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
1705                        dev_priv->chv_phy_control);
1706
1707         vlv_set_power_well(dev_priv, power_well, false);
1708
1709         drm_dbg_kms(&dev_priv->drm,
1710                     "Disabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
1711                     phy, dev_priv->chv_phy_control);
1712
1713         /* PHY is fully reset now, so we can enable the PHY state asserts */
1714         dev_priv->chv_phy_assert[phy] = true;
1715
1716         assert_chv_phy_status(dev_priv);
1717 }
1718
1719 static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpio_phy phy,
1720                                      enum dpio_channel ch, bool override, unsigned int mask)
1721 {
1722         enum pipe pipe = phy == DPIO_PHY0 ? PIPE_A : PIPE_C;
1723         u32 reg, val, expected, actual;
1724
1725         /*
1726          * The BIOS can leave the PHY is some weird state
1727          * where it doesn't fully power down some parts.
1728          * Disable the asserts until the PHY has been fully
1729          * reset (ie. the power well has been disabled at
1730          * least once).
1731          */
1732         if (!dev_priv->chv_phy_assert[phy])
1733                 return;
1734
1735         if (ch == DPIO_CH0)
1736                 reg = _CHV_CMN_DW0_CH0;
1737         else
1738                 reg = _CHV_CMN_DW6_CH1;
1739
1740         vlv_dpio_get(dev_priv);
1741         val = vlv_dpio_read(dev_priv, pipe, reg);
1742         vlv_dpio_put(dev_priv);
1743
1744         /*
1745          * This assumes !override is only used when the port is disabled.
1746          * All lanes should power down even without the override when
1747          * the port is disabled.
1748          */
1749         if (!override || mask == 0xf) {
1750                 expected = DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
1751                 /*
1752                  * If CH1 common lane is not active anymore
1753                  * (eg. for pipe B DPLL) the entire channel will
1754                  * shut down, which causes the common lane registers
1755                  * to read as 0. That means we can't actually check
1756                  * the lane power down status bits, but as the entire
1757                  * register reads as 0 it's a good indication that the
1758                  * channel is indeed entirely powered down.
1759                  */
1760                 if (ch == DPIO_CH1 && val == 0)
1761                         expected = 0;
1762         } else if (mask != 0x0) {
1763                 expected = DPIO_ANYDL_POWERDOWN;
1764         } else {
1765                 expected = 0;
1766         }
1767
1768         if (ch == DPIO_CH0)
1769                 actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH0;
1770         else
1771                 actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH1;
1772         actual &= DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
1773
1774         drm_WARN(&dev_priv->drm, actual != expected,
1775                  "Unexpected DPIO lane power down: all %d, any %d. Expected: all %d, any %d. (0x%x = 0x%08x)\n",
1776                  !!(actual & DPIO_ALLDL_POWERDOWN),
1777                  !!(actual & DPIO_ANYDL_POWERDOWN),
1778                  !!(expected & DPIO_ALLDL_POWERDOWN),
1779                  !!(expected & DPIO_ANYDL_POWERDOWN),
1780                  reg, val);
1781 }
1782
1783 bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
1784                           enum dpio_channel ch, bool override)
1785 {
1786         struct i915_power_domains *power_domains = &dev_priv->power_domains;
1787         bool was_override;
1788
1789         mutex_lock(&power_domains->lock);
1790
1791         was_override = dev_priv->chv_phy_control & PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
1792
1793         if (override == was_override)
1794                 goto out;
1795
1796         if (override)
1797                 dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
1798         else
1799                 dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
1800
1801         intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
1802                        dev_priv->chv_phy_control);
1803
1804         drm_dbg_kms(&dev_priv->drm,
1805                     "Power gating DPIO PHY%d CH%d (DPIO_PHY_CONTROL=0x%08x)\n",
1806                     phy, ch, dev_priv->chv_phy_control);
1807
1808         assert_chv_phy_status(dev_priv);
1809
1810 out:
1811         mutex_unlock(&power_domains->lock);
1812
1813         return was_override;
1814 }
1815
1816 void chv_phy_powergate_lanes(struct intel_encoder *encoder,
1817                              bool override, unsigned int mask)
1818 {
1819         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1820         struct i915_power_domains *power_domains = &dev_priv->power_domains;
1821         enum dpio_phy phy = vlv_dig_port_to_phy(enc_to_dig_port(encoder));
1822         enum dpio_channel ch = vlv_dig_port_to_channel(enc_to_dig_port(encoder));
1823
1824         mutex_lock(&power_domains->lock);
1825
1826         dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD(0xf, phy, ch);
1827         dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD(mask, phy, ch);
1828
1829         if (override)
1830                 dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
1831         else
1832                 dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
1833
1834         intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
1835                        dev_priv->chv_phy_control);
1836
1837         drm_dbg_kms(&dev_priv->drm,
1838                     "Power gating DPIO PHY%d CH%d lanes 0x%x (PHY_CONTROL=0x%08x)\n",
1839                     phy, ch, mask, dev_priv->chv_phy_control);
1840
1841         assert_chv_phy_status(dev_priv);
1842
1843         assert_chv_phy_powergate(dev_priv, phy, ch, override, mask);
1844
1845         mutex_unlock(&power_domains->lock);
1846 }
1847
1848 static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
1849                                         struct i915_power_well *power_well)
1850 {
1851         enum pipe pipe = PIPE_A;
1852         bool enabled;
1853         u32 state, ctrl;
1854
1855         vlv_punit_get(dev_priv);
1856
1857         state = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe);
1858         /*
1859          * We only ever set the power-on and power-gate states, anything
1860          * else is unexpected.
1861          */
1862         drm_WARN_ON(&dev_priv->drm, state != DP_SSS_PWR_ON(pipe) &&
1863                     state != DP_SSS_PWR_GATE(pipe));
1864         enabled = state == DP_SSS_PWR_ON(pipe);
1865
1866         /*
1867          * A transient state at this point would mean some unexpected party
1868          * is poking at the power controls too.
1869          */
1870         ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSC_MASK(pipe);
1871         drm_WARN_ON(&dev_priv->drm, ctrl << 16 != state);
1872
1873         vlv_punit_put(dev_priv);
1874
1875         return enabled;
1876 }
1877
1878 static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
1879                                     struct i915_power_well *power_well,
1880                                     bool enable)
1881 {
1882         enum pipe pipe = PIPE_A;
1883         u32 state;
1884         u32 ctrl;
1885
1886         state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
1887
1888         vlv_punit_get(dev_priv);
1889
1890 #define COND \
1891         ((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe)) == state)
1892
1893         if (COND)
1894                 goto out;
1895
1896         ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
1897         ctrl &= ~DP_SSC_MASK(pipe);
1898         ctrl |= enable ? DP_SSC_PWR_ON(pipe) : DP_SSC_PWR_GATE(pipe);
1899         vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, ctrl);
1900
1901         if (wait_for(COND, 100))
1902                 drm_err(&dev_priv->drm,
1903                         "timeout setting power well state %08x (%08x)\n",
1904                         state,
1905                         vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM));
1906
1907 #undef COND
1908
1909 out:
1910         vlv_punit_put(dev_priv);
1911 }
1912
1913 static void chv_pipe_power_well_sync_hw(struct drm_i915_private *dev_priv,
1914                                         struct i915_power_well *power_well)
1915 {
1916         intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
1917                        dev_priv->chv_phy_control);
1918 }
1919
1920 static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
1921                                        struct i915_power_well *power_well)
1922 {
1923         chv_set_pipe_power_well(dev_priv, power_well, true);
1924
1925         vlv_display_power_well_init(dev_priv);
1926 }
1927
1928 static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
1929                                         struct i915_power_well *power_well)
1930 {
1931         vlv_display_power_well_deinit(dev_priv);
1932
1933         chv_set_pipe_power_well(dev_priv, power_well, false);
1934 }
1935
1936 static u64 __async_put_domains_mask(struct i915_power_domains *power_domains)
1937 {
1938         return power_domains->async_put_domains[0] |
1939                power_domains->async_put_domains[1];
1940 }
1941
1942 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
1943
1944 static bool
1945 assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
1946 {
1947         struct drm_i915_private *i915 = container_of(power_domains,
1948                                                      struct drm_i915_private,
1949                                                      power_domains);
1950         return !drm_WARN_ON(&i915->drm, power_domains->async_put_domains[0] &
1951                             power_domains->async_put_domains[1]);
1952 }
1953
1954 static bool
1955 __async_put_domains_state_ok(struct i915_power_domains *power_domains)
1956 {
1957         struct drm_i915_private *i915 = container_of(power_domains,
1958                                                      struct drm_i915_private,
1959                                                      power_domains);
1960         enum intel_display_power_domain domain;
1961         bool err = false;
1962
1963         err |= !assert_async_put_domain_masks_disjoint(power_domains);
1964         err |= drm_WARN_ON(&i915->drm, !!power_domains->async_put_wakeref !=
1965                            !!__async_put_domains_mask(power_domains));
1966
1967         for_each_power_domain(domain, __async_put_domains_mask(power_domains))
1968                 err |= drm_WARN_ON(&i915->drm,
1969                                    power_domains->domain_use_count[domain] != 1);
1970
1971         return !err;
1972 }
1973
1974 static void print_power_domains(struct i915_power_domains *power_domains,
1975                                 const char *prefix, u64 mask)
1976 {
1977         struct drm_i915_private *i915 = container_of(power_domains,
1978                                                      struct drm_i915_private,
1979                                                      power_domains);
1980         enum intel_display_power_domain domain;
1981
1982         drm_dbg(&i915->drm, "%s (%lu):\n", prefix, hweight64(mask));
1983         for_each_power_domain(domain, mask)
1984                 drm_dbg(&i915->drm, "%s use_count %d\n",
1985                         intel_display_power_domain_str(domain),
1986                         power_domains->domain_use_count[domain]);
1987 }
1988
1989 static void
1990 print_async_put_domains_state(struct i915_power_domains *power_domains)
1991 {
1992         struct drm_i915_private *i915 = container_of(power_domains,
1993                                                      struct drm_i915_private,
1994                                                      power_domains);
1995
1996         drm_dbg(&i915->drm, "async_put_wakeref %u\n",
1997                 power_domains->async_put_wakeref);
1998
1999         print_power_domains(power_domains, "async_put_domains[0]",
2000                             power_domains->async_put_domains[0]);
2001         print_power_domains(power_domains, "async_put_domains[1]",
2002                             power_domains->async_put_domains[1]);
2003 }
2004
2005 static void
2006 verify_async_put_domains_state(struct i915_power_domains *power_domains)
2007 {
2008         if (!__async_put_domains_state_ok(power_domains))
2009                 print_async_put_domains_state(power_domains);
2010 }
2011
2012 #else
2013
2014 static void
2015 assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
2016 {
2017 }
2018
2019 static void
2020 verify_async_put_domains_state(struct i915_power_domains *power_domains)
2021 {
2022 }
2023
2024 #endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
2025
2026 static u64 async_put_domains_mask(struct i915_power_domains *power_domains)
2027 {
2028         assert_async_put_domain_masks_disjoint(power_domains);
2029
2030         return __async_put_domains_mask(power_domains);
2031 }
2032
2033 static void
2034 async_put_domains_clear_domain(struct i915_power_domains *power_domains,
2035                                enum intel_display_power_domain domain)
2036 {
2037         assert_async_put_domain_masks_disjoint(power_domains);
2038
2039         power_domains->async_put_domains[0] &= ~BIT_ULL(domain);
2040         power_domains->async_put_domains[1] &= ~BIT_ULL(domain);
2041 }
2042
2043 static bool
2044 intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
2045                                        enum intel_display_power_domain domain)
2046 {
2047         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2048         bool ret = false;
2049
2050         if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain)))
2051                 goto out_verify;
2052
2053         async_put_domains_clear_domain(power_domains, domain);
2054
2055         ret = true;
2056
2057         if (async_put_domains_mask(power_domains))
2058                 goto out_verify;
2059
2060         cancel_delayed_work(&power_domains->async_put_work);
2061         intel_runtime_pm_put_raw(&dev_priv->runtime_pm,
2062                                  fetch_and_zero(&power_domains->async_put_wakeref));
2063 out_verify:
2064         verify_async_put_domains_state(power_domains);
2065
2066         return ret;
2067 }
2068
2069 static void
2070 __intel_display_power_get_domain(struct drm_i915_private *dev_priv,
2071                                  enum intel_display_power_domain domain)
2072 {
2073         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2074         struct i915_power_well *power_well;
2075
2076         if (intel_display_power_grab_async_put_ref(dev_priv, domain))
2077                 return;
2078
2079         for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain))
2080                 intel_power_well_get(dev_priv, power_well);
2081
2082         power_domains->domain_use_count[domain]++;
2083 }
2084
2085 /**
2086  * intel_display_power_get - grab a power domain reference
2087  * @dev_priv: i915 device instance
2088  * @domain: power domain to reference
2089  *
2090  * This function grabs a power domain reference for @domain and ensures that the
2091  * power domain and all its parents are powered up. Therefore users should only
2092  * grab a reference to the innermost power domain they need.
2093  *
2094  * Any power domain reference obtained by this function must have a symmetric
2095  * call to intel_display_power_put() to release the reference again.
2096  */
2097 intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
2098                                         enum intel_display_power_domain domain)
2099 {
2100         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2101         intel_wakeref_t wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
2102
2103         mutex_lock(&power_domains->lock);
2104         __intel_display_power_get_domain(dev_priv, domain);
2105         mutex_unlock(&power_domains->lock);
2106
2107         return wakeref;
2108 }
2109
2110 /**
2111  * intel_display_power_get_if_enabled - grab a reference for an enabled display power domain
2112  * @dev_priv: i915 device instance
2113  * @domain: power domain to reference
2114  *
2115  * This function grabs a power domain reference for @domain and ensures that the
2116  * power domain and all its parents are powered up. Therefore users should only
2117  * grab a reference to the innermost power domain they need.
2118  *
2119  * Any power domain reference obtained by this function must have a symmetric
2120  * call to intel_display_power_put() to release the reference again.
2121  */
2122 intel_wakeref_t
2123 intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
2124                                    enum intel_display_power_domain domain)
2125 {
2126         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2127         intel_wakeref_t wakeref;
2128         bool is_enabled;
2129
2130         wakeref = intel_runtime_pm_get_if_in_use(&dev_priv->runtime_pm);
2131         if (!wakeref)
2132                 return false;
2133
2134         mutex_lock(&power_domains->lock);
2135
2136         if (__intel_display_power_is_enabled(dev_priv, domain)) {
2137                 __intel_display_power_get_domain(dev_priv, domain);
2138                 is_enabled = true;
2139         } else {
2140                 is_enabled = false;
2141         }
2142
2143         mutex_unlock(&power_domains->lock);
2144
2145         if (!is_enabled) {
2146                 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
2147                 wakeref = 0;
2148         }
2149
2150         return wakeref;
2151 }
2152
2153 static void
2154 __intel_display_power_put_domain(struct drm_i915_private *dev_priv,
2155                                  enum intel_display_power_domain domain)
2156 {
2157         struct i915_power_domains *power_domains;
2158         struct i915_power_well *power_well;
2159         const char *name = intel_display_power_domain_str(domain);
2160
2161         power_domains = &dev_priv->power_domains;
2162
2163         drm_WARN(&dev_priv->drm, !power_domains->domain_use_count[domain],
2164                  "Use count on domain %s is already zero\n",
2165                  name);
2166         drm_WARN(&dev_priv->drm,
2167                  async_put_domains_mask(power_domains) & BIT_ULL(domain),
2168                  "Async disabling of domain %s is pending\n",
2169                  name);
2170
2171         power_domains->domain_use_count[domain]--;
2172
2173         for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain))
2174                 intel_power_well_put(dev_priv, power_well);
2175 }
2176
2177 static void __intel_display_power_put(struct drm_i915_private *dev_priv,
2178                                       enum intel_display_power_domain domain)
2179 {
2180         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2181
2182         mutex_lock(&power_domains->lock);
2183         __intel_display_power_put_domain(dev_priv, domain);
2184         mutex_unlock(&power_domains->lock);
2185 }
2186
2187 static void
2188 queue_async_put_domains_work(struct i915_power_domains *power_domains,
2189                              intel_wakeref_t wakeref)
2190 {
2191         struct drm_i915_private *i915 = container_of(power_domains,
2192                                                      struct drm_i915_private,
2193                                                      power_domains);
2194         drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
2195         power_domains->async_put_wakeref = wakeref;
2196         drm_WARN_ON(&i915->drm, !queue_delayed_work(system_unbound_wq,
2197                                                     &power_domains->async_put_work,
2198                                                     msecs_to_jiffies(100)));
2199 }
2200
2201 static void
2202 release_async_put_domains(struct i915_power_domains *power_domains, u64 mask)
2203 {
2204         struct drm_i915_private *dev_priv =
2205                 container_of(power_domains, struct drm_i915_private,
2206                              power_domains);
2207         struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
2208         enum intel_display_power_domain domain;
2209         intel_wakeref_t wakeref;
2210
2211         /*
2212          * The caller must hold already raw wakeref, upgrade that to a proper
2213          * wakeref to make the state checker happy about the HW access during
2214          * power well disabling.
2215          */
2216         assert_rpm_raw_wakeref_held(rpm);
2217         wakeref = intel_runtime_pm_get(rpm);
2218
2219         for_each_power_domain(domain, mask) {
2220                 /* Clear before put, so put's sanity check is happy. */
2221                 async_put_domains_clear_domain(power_domains, domain);
2222                 __intel_display_power_put_domain(dev_priv, domain);
2223         }
2224
2225         intel_runtime_pm_put(rpm, wakeref);
2226 }
2227
2228 static void
2229 intel_display_power_put_async_work(struct work_struct *work)
2230 {
2231         struct drm_i915_private *dev_priv =
2232                 container_of(work, struct drm_i915_private,
2233                              power_domains.async_put_work.work);
2234         struct i915_power_domains *power_domains = &dev_priv->power_domains;
2235         struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
2236         intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
2237         intel_wakeref_t old_work_wakeref = 0;
2238
2239         mutex_lock(&power_domains->lock);
2240
2241         /*
2242          * Bail out if all the domain refs pending to be released were grabbed
2243          * by subsequent gets or a flush_work.
2244          */
2245         old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
2246         if (!old_work_wakeref)
2247                 goto out_verify;
2248
2249         release_async_put_domains(power_domains,
2250                                   power_domains->async_put_domains[0]);
2251
2252         /* Requeue the work if more domains were async put meanwhile. */
2253         if (power_domains->async_put_domains[1]) {
2254                 power_domains->async_put_domains[0] =
2255                         fetch_and_zero(&power_domains->async_put_domains[1]);
2256                 queue_async_put_domains_work(power_domains,
2257                                              fetch_and_zero(&new_work_wakeref));
2258         }
2259
2260 out_verify:
2261         verify_async_put_domains_state(power_domains);
2262
2263         mutex_unlock(&power_domains->lock);
2264
2265         if (old_work_wakeref)
2266                 intel_runtime_pm_put_raw(rpm, old_work_wakeref);
2267         if (new_work_wakeref)
2268                 intel_runtime_pm_put_raw(rpm, new_work_wakeref);
2269 }
2270
2271 /**
2272  * intel_display_power_put_async - release a power domain reference asynchronously
2273  * @i915: i915 device instance
2274  * @domain: power domain to reference
2275  * @wakeref: wakeref acquired for the reference that is being released
2276  *
2277  * This function drops the power domain reference obtained by
2278  * intel_display_power_get*() and schedules a work to power down the
2279  * corresponding hardware block if this is the last reference.
2280  */
2281 void __intel_display_power_put_async(struct drm_i915_private *i915,
2282                                      enum intel_display_power_domain domain,
2283                                      intel_wakeref_t wakeref)
2284 {
2285         struct i915_power_domains *power_domains = &i915->power_domains;
2286         struct intel_runtime_pm *rpm = &i915->runtime_pm;
2287         intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
2288
2289         mutex_lock(&power_domains->lock);
2290
2291         if (power_domains->domain_use_count[domain] > 1) {
2292                 __intel_display_power_put_domain(i915, domain);
2293
2294                 goto out_verify;
2295         }
2296
2297         drm_WARN_ON(&i915->drm, power_domains->domain_use_count[domain] != 1);
2298
2299         /* Let a pending work requeue itself or queue a new one. */
2300         if (power_domains->async_put_wakeref) {
2301                 power_domains->async_put_domains[1] |= BIT_ULL(domain);
2302         } else {
2303                 power_domains->async_put_domains[0] |= BIT_ULL(domain);
2304                 queue_async_put_domains_work(power_domains,
2305                                              fetch_and_zero(&work_wakeref));
2306         }
2307
2308 out_verify:
2309         verify_async_put_domains_state(power_domains);
2310
2311         mutex_unlock(&power_domains->lock);
2312
2313         if (work_wakeref)
2314                 intel_runtime_pm_put_raw(rpm, work_wakeref);
2315
2316         intel_runtime_pm_put(rpm, wakeref);
2317 }
2318
2319 /**
2320  * intel_display_power_flush_work - flushes the async display power disabling work
2321  * @i915: i915 device instance
2322  *
2323  * Flushes any pending work that was scheduled by a preceding
2324  * intel_display_power_put_async() call, completing the disabling of the
2325  * corresponding power domains.
2326  *
2327  * Note that the work handler function may still be running after this
2328  * function returns; to ensure that the work handler isn't running use
2329  * intel_display_power_flush_work_sync() instead.
2330  */
2331 void intel_display_power_flush_work(struct drm_i915_private *i915)
2332 {
2333         struct i915_power_domains *power_domains = &i915->power_domains;
2334         intel_wakeref_t work_wakeref;
2335
2336         mutex_lock(&power_domains->lock);
2337
2338         work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
2339         if (!work_wakeref)
2340                 goto out_verify;
2341
2342         release_async_put_domains(power_domains,
2343                                   async_put_domains_mask(power_domains));
2344         cancel_delayed_work(&power_domains->async_put_work);
2345
2346 out_verify:
2347         verify_async_put_domains_state(power_domains);
2348
2349         mutex_unlock(&power_domains->lock);
2350
2351         if (work_wakeref)
2352                 intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref);
2353 }
2354
2355 /**
2356  * intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
2357  * @i915: i915 device instance
2358  *
2359  * Like intel_display_power_flush_work(), but also ensure that the work
2360  * handler function is not running any more when this function returns.
2361  */
2362 static void
2363 intel_display_power_flush_work_sync(struct drm_i915_private *i915)
2364 {
2365         struct i915_power_domains *power_domains = &i915->power_domains;
2366
2367         intel_display_power_flush_work(i915);
2368         cancel_delayed_work_sync(&power_domains->async_put_work);
2369
2370         verify_async_put_domains_state(power_domains);
2371
2372         drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
2373 }
2374
2375 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
2376 /**
2377  * intel_display_power_put - release a power domain reference
2378  * @dev_priv: i915 device instance
2379  * @domain: power domain to reference
2380  * @wakeref: wakeref acquired for the reference that is being released
2381  *
2382  * This function drops the power domain reference obtained by
2383  * intel_display_power_get() and might power down the corresponding hardware
2384  * block right away if this is the last reference.
2385  */
2386 void intel_display_power_put(struct drm_i915_private *dev_priv,
2387                              enum intel_display_power_domain domain,
2388                              intel_wakeref_t wakeref)
2389 {
2390         __intel_display_power_put(dev_priv, domain);
2391         intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
2392 }
2393 #else
2394 /**
2395  * intel_display_power_put_unchecked - release an unchecked power domain reference
2396  * @dev_priv: i915 device instance
2397  * @domain: power domain to reference
2398  *
2399  * This function drops the power domain reference obtained by
2400  * intel_display_power_get() and might power down the corresponding hardware
2401  * block right away if this is the last reference.
2402  *
2403  * This function is only for the power domain code's internal use to suppress wakeref
2404  * tracking when the correspondig debug kconfig option is disabled, should not
2405  * be used otherwise.
2406  */
2407 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
2408                                        enum intel_display_power_domain domain)
2409 {
2410         __intel_display_power_put(dev_priv, domain);
2411         intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
2412 }
2413 #endif
2414
2415 void
2416 intel_display_power_get_in_set(struct drm_i915_private *i915,
2417                                struct intel_display_power_domain_set *power_domain_set,
2418                                enum intel_display_power_domain domain)
2419 {
2420         intel_wakeref_t __maybe_unused wf;
2421
2422         drm_WARN_ON(&i915->drm, power_domain_set->mask & BIT_ULL(domain));
2423
2424         wf = intel_display_power_get(i915, domain);
2425 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
2426         power_domain_set->wakerefs[domain] = wf;
2427 #endif
2428         power_domain_set->mask |= BIT_ULL(domain);
2429 }
2430
2431 bool
2432 intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
2433                                           struct intel_display_power_domain_set *power_domain_set,
2434                                           enum intel_display_power_domain domain)
2435 {
2436         intel_wakeref_t wf;
2437
2438         drm_WARN_ON(&i915->drm, power_domain_set->mask & BIT_ULL(domain));
2439
2440         wf = intel_display_power_get_if_enabled(i915, domain);
2441         if (!wf)
2442                 return false;
2443
2444 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
2445         power_domain_set->wakerefs[domain] = wf;
2446 #endif
2447         power_domain_set->mask |= BIT_ULL(domain);
2448
2449         return true;
2450 }
2451
2452 void
2453 intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
2454                                     struct intel_display_power_domain_set *power_domain_set,
2455                                     u64 mask)
2456 {
2457         enum intel_display_power_domain domain;
2458
2459         drm_WARN_ON(&i915->drm, mask & ~power_domain_set->mask);
2460
2461         for_each_power_domain(domain, mask) {
2462                 intel_wakeref_t __maybe_unused wf = -1;
2463
2464 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
2465                 wf = fetch_and_zero(&power_domain_set->wakerefs[domain]);
2466 #endif
2467                 intel_display_power_put(i915, domain, wf);
2468                 power_domain_set->mask &= ~BIT_ULL(domain);
2469         }
2470 }
2471
2472 #define I830_PIPES_POWER_DOMAINS (              \
2473         BIT_ULL(POWER_DOMAIN_PIPE_A) |          \
2474         BIT_ULL(POWER_DOMAIN_PIPE_B) |          \
2475         BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |     \
2476         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2477         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |    \
2478         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |    \
2479         BIT_ULL(POWER_DOMAIN_INIT))
2480
2481 #define VLV_DISPLAY_POWER_DOMAINS (             \
2482         BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) |    \
2483         BIT_ULL(POWER_DOMAIN_PIPE_A) |          \
2484         BIT_ULL(POWER_DOMAIN_PIPE_B) |          \
2485         BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |     \
2486         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2487         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |    \
2488         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |    \
2489         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2490         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2491         BIT_ULL(POWER_DOMAIN_PORT_DSI) |                \
2492         BIT_ULL(POWER_DOMAIN_PORT_CRT) |                \
2493         BIT_ULL(POWER_DOMAIN_VGA) |                     \
2494         BIT_ULL(POWER_DOMAIN_AUDIO) |           \
2495         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2496         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2497         BIT_ULL(POWER_DOMAIN_GMBUS) |           \
2498         BIT_ULL(POWER_DOMAIN_INIT))
2499
2500 #define VLV_DPIO_CMN_BC_POWER_DOMAINS (         \
2501         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2502         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2503         BIT_ULL(POWER_DOMAIN_PORT_CRT) |                \
2504         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2505         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2506         BIT_ULL(POWER_DOMAIN_INIT))
2507
2508 #define VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS (  \
2509         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2510         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2511         BIT_ULL(POWER_DOMAIN_INIT))
2512
2513 #define VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS (  \
2514         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2515         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2516         BIT_ULL(POWER_DOMAIN_INIT))
2517
2518 #define VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS (  \
2519         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2520         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2521         BIT_ULL(POWER_DOMAIN_INIT))
2522
2523 #define VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS (  \
2524         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2525         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2526         BIT_ULL(POWER_DOMAIN_INIT))
2527
2528 #define CHV_DISPLAY_POWER_DOMAINS (             \
2529         BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) |    \
2530         BIT_ULL(POWER_DOMAIN_PIPE_A) |          \
2531         BIT_ULL(POWER_DOMAIN_PIPE_B) |          \
2532         BIT_ULL(POWER_DOMAIN_PIPE_C) |          \
2533         BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |     \
2534         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2535         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |     \
2536         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |    \
2537         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |    \
2538         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |    \
2539         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2540         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2541         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |        \
2542         BIT_ULL(POWER_DOMAIN_PORT_DSI) |                \
2543         BIT_ULL(POWER_DOMAIN_VGA) |                     \
2544         BIT_ULL(POWER_DOMAIN_AUDIO) |           \
2545         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2546         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2547         BIT_ULL(POWER_DOMAIN_AUX_D) |           \
2548         BIT_ULL(POWER_DOMAIN_GMBUS) |           \
2549         BIT_ULL(POWER_DOMAIN_INIT))
2550
2551 #define CHV_DPIO_CMN_BC_POWER_DOMAINS (         \
2552         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2553         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2554         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2555         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2556         BIT_ULL(POWER_DOMAIN_INIT))
2557
2558 #define CHV_DPIO_CMN_D_POWER_DOMAINS (          \
2559         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |        \
2560         BIT_ULL(POWER_DOMAIN_AUX_D) |           \
2561         BIT_ULL(POWER_DOMAIN_INIT))
2562
2563 #define HSW_DISPLAY_POWER_DOMAINS (                     \
2564         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2565         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2566         BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |             \
2567         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2568         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2569         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2570         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2571         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2572         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2573         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2574         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |                \
2575         BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */    \
2576         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2577         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2578         BIT_ULL(POWER_DOMAIN_INIT))
2579
2580 #define BDW_DISPLAY_POWER_DOMAINS (                     \
2581         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2582         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2583         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2584         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2585         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2586         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2587         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2588         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2589         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2590         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |                \
2591         BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */    \
2592         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2593         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2594         BIT_ULL(POWER_DOMAIN_INIT))
2595
2596 #define SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS (         \
2597         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2598         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2599         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2600         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2601         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2602         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2603         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2604         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2605         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2606         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |                \
2607         BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) |                \
2608         BIT_ULL(POWER_DOMAIN_AUX_B) |                       \
2609         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2610         BIT_ULL(POWER_DOMAIN_AUX_D) |                   \
2611         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2612         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2613         BIT_ULL(POWER_DOMAIN_INIT))
2614 #define SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS (          \
2615         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) |           \
2616         BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO) |           \
2617         BIT_ULL(POWER_DOMAIN_INIT))
2618 #define SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS (            \
2619         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) |           \
2620         BIT_ULL(POWER_DOMAIN_INIT))
2621 #define SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS (            \
2622         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) |           \
2623         BIT_ULL(POWER_DOMAIN_INIT))
2624 #define SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS (            \
2625         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) |           \
2626         BIT_ULL(POWER_DOMAIN_INIT))
2627 #define SKL_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2628         SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS |         \
2629         BIT_ULL(POWER_DOMAIN_GT_IRQ) |                  \
2630         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2631         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2632         BIT_ULL(POWER_DOMAIN_INIT))
2633
2634 #define BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS (         \
2635         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2636         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2637         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2638         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2639         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2640         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2641         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2642         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2643         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2644         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2645         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2646         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2647         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2648         BIT_ULL(POWER_DOMAIN_INIT))
2649 #define BXT_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2650         BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS |         \
2651         BIT_ULL(POWER_DOMAIN_GT_IRQ) |                  \
2652         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2653         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2654         BIT_ULL(POWER_DOMAIN_GMBUS) |                   \
2655         BIT_ULL(POWER_DOMAIN_INIT))
2656 #define BXT_DPIO_CMN_A_POWER_DOMAINS (                  \
2657         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) |                \
2658         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2659         BIT_ULL(POWER_DOMAIN_INIT))
2660 #define BXT_DPIO_CMN_BC_POWER_DOMAINS (                 \
2661         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2662         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2663         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2664         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2665         BIT_ULL(POWER_DOMAIN_INIT))
2666
2667 #define GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS (         \
2668         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2669         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2670         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2671         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2672         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2673         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2674         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2675         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2676         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2677         BIT_ULL(POWER_DOMAIN_AUX_B) |                       \
2678         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2679         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2680         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2681         BIT_ULL(POWER_DOMAIN_INIT))
2682 #define GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS (            \
2683         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
2684 #define GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS (            \
2685         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
2686 #define GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS (            \
2687         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
2688 #define GLK_DPIO_CMN_A_POWER_DOMAINS (                  \
2689         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) |                \
2690         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2691         BIT_ULL(POWER_DOMAIN_INIT))
2692 #define GLK_DPIO_CMN_B_POWER_DOMAINS (                  \
2693         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2694         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2695         BIT_ULL(POWER_DOMAIN_INIT))
2696 #define GLK_DPIO_CMN_C_POWER_DOMAINS (                  \
2697         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2698         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2699         BIT_ULL(POWER_DOMAIN_INIT))
2700 #define GLK_DISPLAY_AUX_A_POWER_DOMAINS (               \
2701         BIT_ULL(POWER_DOMAIN_AUX_A) |           \
2702         BIT_ULL(POWER_DOMAIN_AUX_IO_A) |                \
2703         BIT_ULL(POWER_DOMAIN_INIT))
2704 #define GLK_DISPLAY_AUX_B_POWER_DOMAINS (               \
2705         BIT_ULL(POWER_DOMAIN_AUX_B) |           \
2706         BIT_ULL(POWER_DOMAIN_INIT))
2707 #define GLK_DISPLAY_AUX_C_POWER_DOMAINS (               \
2708         BIT_ULL(POWER_DOMAIN_AUX_C) |           \
2709         BIT_ULL(POWER_DOMAIN_INIT))
2710 #define GLK_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2711         GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS |         \
2712         BIT_ULL(POWER_DOMAIN_GT_IRQ) |                  \
2713         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2714         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2715         BIT_ULL(POWER_DOMAIN_GMBUS) |                   \
2716         BIT_ULL(POWER_DOMAIN_INIT))
2717
2718 #define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS (         \
2719         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2720         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2721         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2722         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2723         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2724         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |             \
2725         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |             \
2726         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |                \
2727         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |                \
2728         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |                \
2729         BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) |                \
2730         BIT_ULL(POWER_DOMAIN_AUX_B) |                       \
2731         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2732         BIT_ULL(POWER_DOMAIN_AUX_D) |                   \
2733         BIT_ULL(POWER_DOMAIN_AUX_F) |                   \
2734         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2735         BIT_ULL(POWER_DOMAIN_VGA) |                             \
2736         BIT_ULL(POWER_DOMAIN_INIT))
2737 #define CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS (            \
2738         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) |           \
2739         BIT_ULL(POWER_DOMAIN_INIT))
2740 #define CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS (            \
2741         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) |           \
2742         BIT_ULL(POWER_DOMAIN_INIT))
2743 #define CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS (            \
2744         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) |           \
2745         BIT_ULL(POWER_DOMAIN_INIT))
2746 #define CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS (            \
2747         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) |           \
2748         BIT_ULL(POWER_DOMAIN_INIT))
2749 #define CNL_DISPLAY_AUX_A_POWER_DOMAINS (               \
2750         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2751         BIT_ULL(POWER_DOMAIN_AUX_IO_A) |                \
2752         BIT_ULL(POWER_DOMAIN_INIT))
2753 #define CNL_DISPLAY_AUX_B_POWER_DOMAINS (               \
2754         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2755         BIT_ULL(POWER_DOMAIN_INIT))
2756 #define CNL_DISPLAY_AUX_C_POWER_DOMAINS (               \
2757         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2758         BIT_ULL(POWER_DOMAIN_INIT))
2759 #define CNL_DISPLAY_AUX_D_POWER_DOMAINS (               \
2760         BIT_ULL(POWER_DOMAIN_AUX_D) |                   \
2761         BIT_ULL(POWER_DOMAIN_INIT))
2762 #define CNL_DISPLAY_AUX_F_POWER_DOMAINS (               \
2763         BIT_ULL(POWER_DOMAIN_AUX_F) |                   \
2764         BIT_ULL(POWER_DOMAIN_INIT))
2765 #define CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS (            \
2766         BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) |           \
2767         BIT_ULL(POWER_DOMAIN_INIT))
2768 #define CNL_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2769         CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS |         \
2770         BIT_ULL(POWER_DOMAIN_GT_IRQ) |                  \
2771         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2772         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2773         BIT_ULL(POWER_DOMAIN_INIT))
2774
2775 /*
2776  * ICL PW_0/PG_0 domains (HW/DMC control):
2777  * - PCI
2778  * - clocks except port PLL
2779  * - central power except FBC
2780  * - shared functions except pipe interrupts, pipe MBUS, DBUF registers
2781  * ICL PW_1/PG_1 domains (HW/DMC control):
2782  * - DBUF function
2783  * - PIPE_A and its planes, except VGA
2784  * - transcoder EDP + PSR
2785  * - transcoder DSI
2786  * - DDI_A
2787  * - FBC
2788  */
2789 #define ICL_PW_4_POWER_DOMAINS (                        \
2790         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2791         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |     \
2792         BIT_ULL(POWER_DOMAIN_INIT))
2793         /* VDSC/joining */
2794 #define ICL_PW_3_POWER_DOMAINS (                        \
2795         ICL_PW_4_POWER_DOMAINS |                        \
2796         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2797         BIT_ULL(POWER_DOMAIN_TRANSCODER_A) |            \
2798         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2799         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2800         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2801         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) |        \
2802         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |        \
2803         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) |        \
2804         BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) |        \
2805         BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) |        \
2806         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2807         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2808         BIT_ULL(POWER_DOMAIN_AUX_D) |                   \
2809         BIT_ULL(POWER_DOMAIN_AUX_E) |                   \
2810         BIT_ULL(POWER_DOMAIN_AUX_F) |                   \
2811         BIT_ULL(POWER_DOMAIN_AUX_C_TBT) |               \
2812         BIT_ULL(POWER_DOMAIN_AUX_D_TBT) |               \
2813         BIT_ULL(POWER_DOMAIN_AUX_E_TBT) |               \
2814         BIT_ULL(POWER_DOMAIN_AUX_F_TBT) |               \
2815         BIT_ULL(POWER_DOMAIN_VGA) |                     \
2816         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2817         BIT_ULL(POWER_DOMAIN_INIT))
2818         /*
2819          * - transcoder WD
2820          * - KVMR (HW control)
2821          */
2822 #define ICL_PW_2_POWER_DOMAINS (                        \
2823         ICL_PW_3_POWER_DOMAINS |                        \
2824         BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) |             \
2825         BIT_ULL(POWER_DOMAIN_INIT))
2826         /*
2827          * - KVMR (HW control)
2828          */
2829 #define ICL_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2830         ICL_PW_2_POWER_DOMAINS |                        \
2831         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2832         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2833         BIT_ULL(POWER_DOMAIN_DPLL_DC_OFF) |                     \
2834         BIT_ULL(POWER_DOMAIN_INIT))
2835
2836 #define ICL_DDI_IO_A_POWER_DOMAINS (                    \
2837         BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
2838 #define ICL_DDI_IO_B_POWER_DOMAINS (                    \
2839         BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
2840 #define ICL_DDI_IO_C_POWER_DOMAINS (                    \
2841         BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
2842 #define ICL_DDI_IO_D_POWER_DOMAINS (                    \
2843         BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO))
2844 #define ICL_DDI_IO_E_POWER_DOMAINS (                    \
2845         BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO))
2846 #define ICL_DDI_IO_F_POWER_DOMAINS (                    \
2847         BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO))
2848
2849 #define ICL_AUX_A_IO_POWER_DOMAINS (                    \
2850         BIT_ULL(POWER_DOMAIN_AUX_IO_A) |                \
2851         BIT_ULL(POWER_DOMAIN_AUX_A))
2852 #define ICL_AUX_B_IO_POWER_DOMAINS (                    \
2853         BIT_ULL(POWER_DOMAIN_AUX_B))
2854 #define ICL_AUX_C_TC1_IO_POWER_DOMAINS (                \
2855         BIT_ULL(POWER_DOMAIN_AUX_C))
2856 #define ICL_AUX_D_TC2_IO_POWER_DOMAINS (                \
2857         BIT_ULL(POWER_DOMAIN_AUX_D))
2858 #define ICL_AUX_E_TC3_IO_POWER_DOMAINS (                \
2859         BIT_ULL(POWER_DOMAIN_AUX_E))
2860 #define ICL_AUX_F_TC4_IO_POWER_DOMAINS (                \
2861         BIT_ULL(POWER_DOMAIN_AUX_F))
2862 #define ICL_AUX_C_TBT1_IO_POWER_DOMAINS (               \
2863         BIT_ULL(POWER_DOMAIN_AUX_C_TBT))
2864 #define ICL_AUX_D_TBT2_IO_POWER_DOMAINS (               \
2865         BIT_ULL(POWER_DOMAIN_AUX_D_TBT))
2866 #define ICL_AUX_E_TBT3_IO_POWER_DOMAINS (               \
2867         BIT_ULL(POWER_DOMAIN_AUX_E_TBT))
2868 #define ICL_AUX_F_TBT4_IO_POWER_DOMAINS (               \
2869         BIT_ULL(POWER_DOMAIN_AUX_F_TBT))
2870
2871 #define TGL_PW_5_POWER_DOMAINS (                        \
2872         BIT_ULL(POWER_DOMAIN_PIPE_D) |                  \
2873         BIT_ULL(POWER_DOMAIN_TRANSCODER_D) |            \
2874         BIT_ULL(POWER_DOMAIN_PIPE_D_PANEL_FITTER) |     \
2875         BIT_ULL(POWER_DOMAIN_INIT))
2876
2877 #define TGL_PW_4_POWER_DOMAINS (                        \
2878         TGL_PW_5_POWER_DOMAINS |                        \
2879         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2880         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2881         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |     \
2882         BIT_ULL(POWER_DOMAIN_INIT))
2883
2884 #define TGL_PW_3_POWER_DOMAINS (                        \
2885         TGL_PW_4_POWER_DOMAINS |                        \
2886         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2887         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2888         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2889         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC1) |      \
2890         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC2) |      \
2891         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC3) |      \
2892         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC4) |      \
2893         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC5) |      \
2894         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC6) |      \
2895         BIT_ULL(POWER_DOMAIN_AUX_USBC1) |               \
2896         BIT_ULL(POWER_DOMAIN_AUX_USBC2) |               \
2897         BIT_ULL(POWER_DOMAIN_AUX_USBC3) |               \
2898         BIT_ULL(POWER_DOMAIN_AUX_USBC4) |               \
2899         BIT_ULL(POWER_DOMAIN_AUX_USBC5) |               \
2900         BIT_ULL(POWER_DOMAIN_AUX_USBC6) |               \
2901         BIT_ULL(POWER_DOMAIN_AUX_TBT1) |                \
2902         BIT_ULL(POWER_DOMAIN_AUX_TBT2) |                \
2903         BIT_ULL(POWER_DOMAIN_AUX_TBT3) |                \
2904         BIT_ULL(POWER_DOMAIN_AUX_TBT4) |                \
2905         BIT_ULL(POWER_DOMAIN_AUX_TBT5) |                \
2906         BIT_ULL(POWER_DOMAIN_AUX_TBT6) |                \
2907         BIT_ULL(POWER_DOMAIN_VGA) |                     \
2908         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2909         BIT_ULL(POWER_DOMAIN_INIT))
2910
2911 #define TGL_PW_2_POWER_DOMAINS (                        \
2912         TGL_PW_3_POWER_DOMAINS |                        \
2913         BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) |     \
2914         BIT_ULL(POWER_DOMAIN_INIT))
2915
2916 #define TGL_DISPLAY_DC_OFF_POWER_DOMAINS (              \
2917         TGL_PW_3_POWER_DOMAINS |                        \
2918         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
2919         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
2920         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
2921         BIT_ULL(POWER_DOMAIN_AUX_C) |                   \
2922         BIT_ULL(POWER_DOMAIN_INIT))
2923
2924 #define TGL_DDI_IO_TC1_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC1)
2925 #define TGL_DDI_IO_TC2_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC2)
2926 #define TGL_DDI_IO_TC3_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC3)
2927 #define TGL_DDI_IO_TC4_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC4)
2928 #define TGL_DDI_IO_TC5_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC5)
2929 #define TGL_DDI_IO_TC6_POWER_DOMAINS    BIT_ULL(POWER_DOMAIN_PORT_DDI_IO_TC6)
2930
2931 #define TGL_AUX_A_IO_POWER_DOMAINS (            \
2932         BIT_ULL(POWER_DOMAIN_AUX_IO_A) |        \
2933         BIT_ULL(POWER_DOMAIN_AUX_A))
2934 #define TGL_AUX_B_IO_POWER_DOMAINS (            \
2935         BIT_ULL(POWER_DOMAIN_AUX_B))
2936 #define TGL_AUX_C_IO_POWER_DOMAINS (            \
2937         BIT_ULL(POWER_DOMAIN_AUX_C))
2938
2939 #define TGL_AUX_IO_USBC1_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC1)
2940 #define TGL_AUX_IO_USBC2_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC2)
2941 #define TGL_AUX_IO_USBC3_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC3)
2942 #define TGL_AUX_IO_USBC4_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC4)
2943 #define TGL_AUX_IO_USBC5_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC5)
2944 #define TGL_AUX_IO_USBC6_POWER_DOMAINS  BIT_ULL(POWER_DOMAIN_AUX_USBC6)
2945
2946 #define TGL_AUX_IO_TBT1_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT1)
2947 #define TGL_AUX_IO_TBT2_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT2)
2948 #define TGL_AUX_IO_TBT3_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT3)
2949 #define TGL_AUX_IO_TBT4_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT4)
2950 #define TGL_AUX_IO_TBT5_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT5)
2951 #define TGL_AUX_IO_TBT6_POWER_DOMAINS   BIT_ULL(POWER_DOMAIN_AUX_TBT6)
2952
2953 #define TGL_TC_COLD_OFF_POWER_DOMAINS (         \
2954         BIT_ULL(POWER_DOMAIN_AUX_USBC1) |       \
2955         BIT_ULL(POWER_DOMAIN_AUX_USBC2) |       \
2956         BIT_ULL(POWER_DOMAIN_AUX_USBC3) |       \
2957         BIT_ULL(POWER_DOMAIN_AUX_USBC4) |       \
2958         BIT_ULL(POWER_DOMAIN_AUX_USBC5) |       \
2959         BIT_ULL(POWER_DOMAIN_AUX_USBC6) |       \
2960         BIT_ULL(POWER_DOMAIN_AUX_TBT1) |        \
2961         BIT_ULL(POWER_DOMAIN_AUX_TBT2) |        \
2962         BIT_ULL(POWER_DOMAIN_AUX_TBT3) |        \
2963         BIT_ULL(POWER_DOMAIN_AUX_TBT4) |        \
2964         BIT_ULL(POWER_DOMAIN_AUX_TBT5) |        \
2965         BIT_ULL(POWER_DOMAIN_AUX_TBT6) |        \
2966         BIT_ULL(POWER_DOMAIN_TC_COLD_OFF))
2967
2968 #define RKL_PW_4_POWER_DOMAINS (                        \
2969         BIT_ULL(POWER_DOMAIN_PIPE_C) |                  \
2970         BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |     \
2971         BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |            \
2972         BIT_ULL(POWER_DOMAIN_INIT))
2973
2974 #define RKL_PW_3_POWER_DOMAINS (                        \
2975         RKL_PW_4_POWER_DOMAINS |                        \
2976         BIT_ULL(POWER_DOMAIN_PIPE_B) |                  \
2977         BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |     \
2978         BIT_ULL(POWER_DOMAIN_AUDIO) |                   \
2979         BIT_ULL(POWER_DOMAIN_VGA) |                     \
2980         BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |            \
2981         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC1) |      \
2982         BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC2) |      \
2983         BIT_ULL(POWER_DOMAIN_AUX_USBC1) |               \
2984         BIT_ULL(POWER_DOMAIN_AUX_USBC2) |               \
2985         BIT_ULL(POWER_DOMAIN_INIT))
2986
2987 /*
2988  * There is no PW_2/PG_2 on RKL.
2989  *
2990  * RKL PW_1/PG_1 domains (under HW/DMC control):
2991  * - DBUF function (note: registers are in PW0)
2992  * - PIPE_A and its planes and VDSC/joining, except VGA
2993  * - transcoder A
2994  * - DDI_A and DDI_B
2995  * - FBC
2996  *
2997  * RKL PW_0/PG_0 domains (under HW/DMC control):
2998  * - PCI
2999  * - clocks except port PLL
3000  * - shared functions:
3001  *     * interrupts except pipe interrupts
3002  *     * MBus except PIPE_MBUS_DBOX_CTL
3003  *     * DBUF registers
3004  * - central power except FBC
3005  * - top-level GTC (DDI-level GTC is in the well associated with the DDI)
3006  */
3007
3008 #define RKL_DISPLAY_DC_OFF_POWER_DOMAINS (              \
3009         RKL_PW_3_POWER_DOMAINS |                        \
3010         BIT_ULL(POWER_DOMAIN_MODESET) |                 \
3011         BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
3012         BIT_ULL(POWER_DOMAIN_AUX_B) |                   \
3013         BIT_ULL(POWER_DOMAIN_INIT))
3014
3015 static const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
3016         .sync_hw = i9xx_power_well_sync_hw_noop,
3017         .enable = i9xx_always_on_power_well_noop,
3018         .disable = i9xx_always_on_power_well_noop,
3019         .is_enabled = i9xx_always_on_power_well_enabled,
3020 };
3021
3022 static const struct i915_power_well_ops chv_pipe_power_well_ops = {
3023         .sync_hw = chv_pipe_power_well_sync_hw,
3024         .enable = chv_pipe_power_well_enable,
3025         .disable = chv_pipe_power_well_disable,
3026         .is_enabled = chv_pipe_power_well_enabled,
3027 };
3028
3029 static const struct i915_power_well_ops chv_dpio_cmn_power_well_ops = {
3030         .sync_hw = i9xx_power_well_sync_hw_noop,
3031         .enable = chv_dpio_cmn_power_well_enable,
3032         .disable = chv_dpio_cmn_power_well_disable,
3033         .is_enabled = vlv_power_well_enabled,
3034 };
3035
3036 static const struct i915_power_well_desc i9xx_always_on_power_well[] = {
3037         {
3038                 .name = "always-on",
3039                 .always_on = true,
3040                 .domains = POWER_DOMAIN_MASK,
3041                 .ops = &i9xx_always_on_power_well_ops,
3042                 .id = DISP_PW_ID_NONE,
3043         },
3044 };
3045
3046 static const struct i915_power_well_ops i830_pipes_power_well_ops = {
3047         .sync_hw = i830_pipes_power_well_sync_hw,
3048         .enable = i830_pipes_power_well_enable,
3049         .disable = i830_pipes_power_well_disable,
3050         .is_enabled = i830_pipes_power_well_enabled,
3051 };
3052
3053 static const struct i915_power_well_desc i830_power_wells[] = {
3054         {
3055                 .name = "always-on",
3056                 .always_on = true,
3057                 .domains = POWER_DOMAIN_MASK,
3058                 .ops = &i9xx_always_on_power_well_ops,
3059                 .id = DISP_PW_ID_NONE,
3060         },
3061         {
3062                 .name = "pipes",
3063                 .domains = I830_PIPES_POWER_DOMAINS,
3064                 .ops = &i830_pipes_power_well_ops,
3065                 .id = DISP_PW_ID_NONE,
3066         },
3067 };
3068
3069 static const struct i915_power_well_ops hsw_power_well_ops = {
3070         .sync_hw = hsw_power_well_sync_hw,
3071         .enable = hsw_power_well_enable,
3072         .disable = hsw_power_well_disable,
3073         .is_enabled = hsw_power_well_enabled,
3074 };
3075
3076 static const struct i915_power_well_ops gen9_dc_off_power_well_ops = {
3077         .sync_hw = i9xx_power_well_sync_hw_noop,
3078         .enable = gen9_dc_off_power_well_enable,
3079         .disable = gen9_dc_off_power_well_disable,
3080         .is_enabled = gen9_dc_off_power_well_enabled,
3081 };
3082
3083 static const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops = {
3084         .sync_hw = i9xx_power_well_sync_hw_noop,
3085         .enable = bxt_dpio_cmn_power_well_enable,
3086         .disable = bxt_dpio_cmn_power_well_disable,
3087         .is_enabled = bxt_dpio_cmn_power_well_enabled,
3088 };
3089
3090 static const struct i915_power_well_regs hsw_power_well_regs = {
3091         .bios   = HSW_PWR_WELL_CTL1,
3092         .driver = HSW_PWR_WELL_CTL2,
3093         .kvmr   = HSW_PWR_WELL_CTL3,
3094         .debug  = HSW_PWR_WELL_CTL4,
3095 };
3096
3097 static const struct i915_power_well_desc hsw_power_wells[] = {
3098         {
3099                 .name = "always-on",
3100                 .always_on = true,
3101                 .domains = POWER_DOMAIN_MASK,
3102                 .ops = &i9xx_always_on_power_well_ops,
3103                 .id = DISP_PW_ID_NONE,
3104         },
3105         {
3106                 .name = "display",
3107                 .domains = HSW_DISPLAY_POWER_DOMAINS,
3108                 .ops = &hsw_power_well_ops,
3109                 .id = HSW_DISP_PW_GLOBAL,
3110                 {
3111                         .hsw.regs = &hsw_power_well_regs,
3112                         .hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
3113                         .hsw.has_vga = true,
3114                 },
3115         },
3116 };
3117
3118 static const struct i915_power_well_desc bdw_power_wells[] = {
3119         {
3120                 .name = "always-on",
3121                 .always_on = true,
3122                 .domains = POWER_DOMAIN_MASK,
3123                 .ops = &i9xx_always_on_power_well_ops,
3124                 .id = DISP_PW_ID_NONE,
3125         },
3126         {
3127                 .name = "display",
3128                 .domains = BDW_DISPLAY_POWER_DOMAINS,
3129                 .ops = &hsw_power_well_ops,
3130                 .id = HSW_DISP_PW_GLOBAL,
3131                 {
3132                         .hsw.regs = &hsw_power_well_regs,
3133                         .hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
3134                         .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
3135                         .hsw.has_vga = true,
3136                 },
3137         },
3138 };
3139
3140 static const struct i915_power_well_ops vlv_display_power_well_ops = {
3141         .sync_hw = i9xx_power_well_sync_hw_noop,
3142         .enable = vlv_display_power_well_enable,
3143         .disable = vlv_display_power_well_disable,
3144         .is_enabled = vlv_power_well_enabled,
3145 };
3146
3147 static const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops = {
3148         .sync_hw = i9xx_power_well_sync_hw_noop,
3149         .enable = vlv_dpio_cmn_power_well_enable,
3150         .disable = vlv_dpio_cmn_power_well_disable,
3151         .is_enabled = vlv_power_well_enabled,
3152 };
3153
3154 static const struct i915_power_well_ops vlv_dpio_power_well_ops = {
3155         .sync_hw = i9xx_power_well_sync_hw_noop,
3156         .enable = vlv_power_well_enable,
3157         .disable = vlv_power_well_disable,
3158         .is_enabled = vlv_power_well_enabled,
3159 };
3160
3161 static const struct i915_power_well_desc vlv_power_wells[] = {
3162         {
3163                 .name = "always-on",
3164                 .always_on = true,
3165                 .domains = POWER_DOMAIN_MASK,
3166                 .ops = &i9xx_always_on_power_well_ops,
3167                 .id = DISP_PW_ID_NONE,
3168         },
3169         {
3170                 .name = "display",
3171                 .domains = VLV_DISPLAY_POWER_DOMAINS,
3172                 .ops = &vlv_display_power_well_ops,
3173                 .id = VLV_DISP_PW_DISP2D,
3174                 {
3175                         .vlv.idx = PUNIT_PWGT_IDX_DISP2D,
3176                 },
3177         },
3178         {
3179                 .name = "dpio-tx-b-01",
3180                 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
3181                            VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
3182                            VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
3183                            VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
3184                 .ops = &vlv_dpio_power_well_ops,
3185                 .id = DISP_PW_ID_NONE,
3186                 {
3187                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01,
3188                 },
3189         },
3190         {
3191                 .name = "dpio-tx-b-23",
3192                 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
3193                            VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
3194                            VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
3195                            VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
3196                 .ops = &vlv_dpio_power_well_ops,
3197                 .id = DISP_PW_ID_NONE,
3198                 {
3199                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23,
3200                 },
3201         },
3202         {
3203                 .name = "dpio-tx-c-01",
3204                 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
3205                            VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
3206                            VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
3207                            VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
3208                 .ops = &vlv_dpio_power_well_ops,
3209                 .id = DISP_PW_ID_NONE,
3210                 {
3211                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01,
3212                 },
3213         },
3214         {
3215                 .name = "dpio-tx-c-23",
3216                 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
3217                            VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
3218                            VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
3219                            VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
3220                 .ops = &vlv_dpio_power_well_ops,
3221                 .id = DISP_PW_ID_NONE,
3222                 {
3223                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23,
3224                 },
3225         },
3226         {
3227                 .name = "dpio-common",
3228                 .domains = VLV_DPIO_CMN_BC_POWER_DOMAINS,
3229                 .ops = &vlv_dpio_cmn_power_well_ops,
3230                 .id = VLV_DISP_PW_DPIO_CMN_BC,
3231                 {
3232                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
3233                 },
3234         },
3235 };
3236
3237 static const struct i915_power_well_desc chv_power_wells[] = {
3238         {
3239                 .name = "always-on",
3240                 .always_on = true,
3241                 .domains = POWER_DOMAIN_MASK,
3242                 .ops = &i9xx_always_on_power_well_ops,
3243                 .id = DISP_PW_ID_NONE,
3244         },
3245         {
3246                 .name = "display",
3247                 /*
3248                  * Pipe A power well is the new disp2d well. Pipe B and C
3249                  * power wells don't actually exist. Pipe A power well is
3250                  * required for any pipe to work.
3251                  */
3252                 .domains = CHV_DISPLAY_POWER_DOMAINS,
3253                 .ops = &chv_pipe_power_well_ops,
3254                 .id = DISP_PW_ID_NONE,
3255         },
3256         {
3257                 .name = "dpio-common-bc",
3258                 .domains = CHV_DPIO_CMN_BC_POWER_DOMAINS,
3259                 .ops = &chv_dpio_cmn_power_well_ops,
3260                 .id = VLV_DISP_PW_DPIO_CMN_BC,
3261                 {
3262                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
3263                 },
3264         },
3265         {
3266                 .name = "dpio-common-d",
3267                 .domains = CHV_DPIO_CMN_D_POWER_DOMAINS,
3268                 .ops = &chv_dpio_cmn_power_well_ops,
3269                 .id = CHV_DISP_PW_DPIO_CMN_D,
3270                 {
3271                         .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_D,
3272                 },
3273         },
3274 };
3275
3276 bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
3277                                          enum i915_power_well_id power_well_id)
3278 {
3279         struct i915_power_well *power_well;
3280         bool ret;
3281
3282         power_well = lookup_power_well(dev_priv, power_well_id);
3283         ret = power_well->desc->ops->is_enabled(dev_priv, power_well);
3284
3285         return ret;
3286 }
3287
3288 static const struct i915_power_well_desc skl_power_wells[] = {
3289         {
3290                 .name = "always-on",
3291                 .always_on = true,
3292                 .domains = POWER_DOMAIN_MASK,
3293                 .ops = &i9xx_always_on_power_well_ops,
3294                 .id = DISP_PW_ID_NONE,
3295         },
3296         {
3297                 .name = "power well 1",
3298                 /* Handled by the DMC firmware */
3299                 .always_on = true,
3300                 .domains = 0,
3301                 .ops = &hsw_power_well_ops,
3302                 .id = SKL_DISP_PW_1,
3303                 {
3304                         .hsw.regs = &hsw_power_well_regs,
3305                         .hsw.idx = SKL_PW_CTL_IDX_PW_1,
3306                         .hsw.has_fuses = true,
3307                 },
3308         },
3309         {
3310                 .name = "MISC IO power well",
3311                 /* Handled by the DMC firmware */
3312                 .always_on = true,
3313                 .domains = 0,
3314                 .ops = &hsw_power_well_ops,
3315                 .id = SKL_DISP_PW_MISC_IO,
3316                 {
3317                         .hsw.regs = &hsw_power_well_regs,
3318                         .hsw.idx = SKL_PW_CTL_IDX_MISC_IO,
3319                 },
3320         },
3321         {
3322                 .name = "DC off",
3323                 .domains = SKL_DISPLAY_DC_OFF_POWER_DOMAINS,
3324                 .ops = &gen9_dc_off_power_well_ops,
3325                 .id = SKL_DISP_DC_OFF,
3326         },
3327         {
3328                 .name = "power well 2",
3329                 .domains = SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
3330                 .ops = &hsw_power_well_ops,
3331                 .id = SKL_DISP_PW_2,
3332                 {
3333                         .hsw.regs = &hsw_power_well_regs,
3334                         .hsw.idx = SKL_PW_CTL_IDX_PW_2,
3335                         .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
3336                         .hsw.has_vga = true,
3337                         .hsw.has_fuses = true,
3338                 },
3339         },
3340         {
3341                 .name = "DDI A/E IO power well",
3342                 .domains = SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS,
3343                 .ops = &hsw_power_well_ops,
3344                 .id = DISP_PW_ID_NONE,
3345                 {
3346                         .hsw.regs = &hsw_power_well_regs,
3347                         .hsw.idx = SKL_PW_CTL_IDX_DDI_A_E,
3348                 },
3349         },
3350         {
3351                 .name = "DDI B IO power well",
3352                 .domains = SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS,
3353                 .ops = &hsw_power_well_ops,
3354                 .id = DISP_PW_ID_NONE,
3355                 {
3356                         .hsw.regs = &hsw_power_well_regs,
3357                         .hsw.idx = SKL_PW_CTL_IDX_DDI_B,
3358                 },
3359         },
3360         {
3361                 .name = "DDI C IO power well",
3362                 .domains = SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS,
3363                 .ops = &hsw_power_well_ops,
3364                 .id = DISP_PW_ID_NONE,
3365                 {
3366                         .hsw.regs = &hsw_power_well_regs,
3367                         .hsw.idx = SKL_PW_CTL_IDX_DDI_C,
3368                 },
3369         },
3370         {
3371                 .name = "DDI D IO power well",
3372                 .domains = SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS,
3373                 .ops = &hsw_power_well_ops,
3374                 .id = DISP_PW_ID_NONE,
3375                 {
3376                         .hsw.regs = &hsw_power_well_regs,
3377                         .hsw.idx = SKL_PW_CTL_IDX_DDI_D,
3378                 },
3379         },
3380 };
3381
3382 static const struct i915_power_well_desc bxt_power_wells[] = {
3383         {
3384                 .name = "always-on",
3385                 .always_on = true,
3386                 .domains = POWER_DOMAIN_MASK,
3387                 .ops = &i9xx_always_on_power_well_ops,
3388                 .id = DISP_PW_ID_NONE,
3389         },
3390         {
3391                 .name = "power well 1",
3392                 /* Handled by the DMC firmware */
3393                 .always_on = true,
3394                 .domains = 0,
3395                 .ops = &hsw_power_well_ops,
3396                 .id = SKL_DISP_PW_1,
3397                 {
3398                         .hsw.regs = &hsw_power_well_regs,
3399                         .hsw.idx = SKL_PW_CTL_IDX_PW_1,
3400                         .hsw.has_fuses = true,
3401                 },
3402         },
3403         {
3404                 .name = "DC off",
3405                 .domains = BXT_DISPLAY_DC_OFF_POWER_DOMAINS,
3406                 .ops = &gen9_dc_off_power_well_ops,
3407                 .id = SKL_DISP_DC_OFF,
3408         },
3409         {
3410                 .name = "power well 2",
3411                 .domains = BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS,
3412                 .ops = &hsw_power_well_ops,
3413                 .id = SKL_DISP_PW_2,
3414                 {
3415                         .hsw.regs = &hsw_power_well_regs,
3416                         .hsw.idx = SKL_PW_CTL_IDX_PW_2,
3417                         .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
3418                         .hsw.has_vga = true,
3419                         .hsw.has_fuses = true,
3420                 },
3421         },
3422         {
3423                 .name = "dpio-common-a",
3424                 .domains = BXT_DPIO_CMN_A_POWER_DOMAINS,
3425                 .ops = &bxt_dpio_cmn_power_well_ops,
3426                 .id = BXT_DISP_PW_DPIO_CMN_A,
3427                 {
3428                         .bxt.phy = DPIO_PHY1,
3429                 },
3430         },
3431         {
3432                 .name = "dpio-common-bc",
3433                 .domains = BXT_DPIO_CMN_BC_POWER_DOMAINS,
3434                 .ops = &bxt_dpio_cmn_power_well_ops,
3435                 .id = VLV_DISP_PW_DPIO_CMN_BC,
3436                 {
3437                         .bxt.phy = DPIO_PHY0,
3438                 },
3439         },
3440 };
3441
3442 static const struct i915_power_well_desc glk_power_wells[] = {
3443         {
3444                 .name = "always-on",
3445                 .always_on = true,
3446                 .domains = POWER_DOMAIN_MASK,
3447                 .ops = &i9xx_always_on_power_well_ops,
3448                 .id = DISP_PW_ID_NONE,
3449         },
3450         {
3451                 .name = "power well 1",
3452                 /* Handled by the DMC firmware */
3453                 .always_on = true,
3454                 .domains = 0,
3455                 .ops = &hsw_power_well_ops,
3456                 .id = SKL_DISP_PW_1,
3457                 {
3458                         .hsw.regs = &hsw_power_well_regs,
3459                         .hsw.idx = SKL_PW_CTL_IDX_PW_1,
3460                         .hsw.has_fuses = true,
3461                 },
3462         },
3463         {
3464                 .name = "DC off",
3465                 .domains = GLK_DISPLAY_DC_OFF_POWER_DOMAINS,
3466                 .ops = &gen9_dc_off_power_well_ops,
3467                 .id = SKL_DISP_DC_OFF,
3468         },
3469         {
3470                 .name = "power well 2",
3471                 .domains = GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS,
3472                 .ops = &hsw_power_well_ops,
3473                 .id = SKL_DISP_PW_2,
3474                 {
3475                         .hsw.regs = &hsw_power_well_regs,
3476                         .hsw.idx = SKL_PW_CTL_IDX_PW_2,
3477                         .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
3478                         .hsw.has_vga = true,
3479                         .hsw.has_fuses = true,
3480                 },
3481         },
3482         {
3483                 .name = "dpio-common-a",
3484                 .domains = GLK_DPIO_CMN_A_POWER_DOMAINS,
3485                 .ops = &bxt_dpio_cmn_power_well_ops,
3486                 .id = BXT_DISP_PW_DPIO_CMN_A,
3487                 {
3488                         .bxt.phy = DPIO_PHY1,
3489                 },
3490         },
3491         {
3492                 .name = "dpio-common-b",
3493                 .domains = GLK_DPIO_CMN_B_POWER_DOMAINS,
3494                 .ops = &bxt_dpio_cmn_power_well_ops,
3495                 .id = VLV_DISP_PW_DPIO_CMN_BC,
3496                 {
3497                         .bxt.phy = DPIO_PHY0,
3498                 },
3499         },
3500         {
3501                 .name = "dpio-common-c",
3502                 .domains = GLK_DPIO_CMN_C_POWER_DOMAINS,
3503                 .ops = &bxt_dpio_cmn_power_well_ops,
3504                 .id = GLK_DISP_PW_DPIO_CMN_C,
3505                 {
3506                         .bxt.phy = DPIO_PHY2,
3507                 },
3508         },
3509         {
3510                 .name = "AUX A",
3511                 .domains = GLK_DISPLAY_AUX_A_POWER_DOMAINS,
3512                 .ops = &hsw_power_well_ops,
3513                 .id = DISP_PW_ID_NONE,
3514                 {
3515                         .hsw.regs = &hsw_power_well_regs,
3516                         .hsw.idx = GLK_PW_CTL_IDX_AUX_A,
3517                 },
3518         },
3519         {
3520                 .name = "AUX B",
3521                 .domains = GLK_DISPLAY_AUX_B_POWER_DOMAINS,
3522                 .ops = &hsw_power_well_ops,
3523                 .id = DISP_PW_ID_NONE,
3524                 {
3525                         .hsw.regs = &hsw_power_well_regs,
3526                         .hsw.idx = GLK_PW_CTL_IDX_AUX_B,
3527                 },
3528         },
3529         {
3530                 .name = "AUX C",
3531                 .domains = GLK_DISPLAY_AUX_C_POWER_DOMAINS,
3532                 .ops = &hsw_power_well_ops,
3533                 .id = DISP_PW_ID_NONE,
3534                 {
3535                         .hsw.regs = &hsw_power_well_regs,
3536                         .hsw.idx = GLK_PW_CTL_IDX_AUX_C,
3537                 },
3538         },
3539         {
3540                 .name = "DDI A IO power well",
3541                 .domains = GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS,
3542                 .ops = &hsw_power_well_ops,
3543                 .id = DISP_PW_ID_NONE,
3544                 {
3545                         .hsw.regs = &hsw_power_well_regs,
3546                         .hsw.idx = GLK_PW_CTL_IDX_DDI_A,
3547                 },
3548         },
3549         {
3550                 .name = "DDI B IO power well",
3551                 .domains = GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS,
3552                 .ops = &hsw_power_well_ops,
3553                 .id = DISP_PW_ID_NONE,
3554                 {
3555                         .hsw.regs = &hsw_power_well_regs,
3556                         .hsw.idx = SKL_PW_CTL_IDX_DDI_B,
3557                 },
3558         },
3559         {
3560                 .name = "DDI C IO power well",
3561                 .domains = GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS,
3562                 .ops = &hsw_power_well_ops,
3563                 .id = DISP_PW_ID_NONE,
3564                 {
3565                         .hsw.regs = &hsw_power_well_regs,
3566                         .hsw.idx = SKL_PW_CTL_IDX_DDI_C,
3567                 },
3568         },
3569 };
3570
3571 static const struct i915_power_well_desc cnl_power_wells[] = {
3572         {
3573                 .name = "always-on",
3574                 .always_on = true,
3575                 .domains = POWER_DOMAIN_MASK,
3576                 .ops = &i9xx_always_on_power_well_ops,
3577                 .id = DISP_PW_ID_NONE,
3578         },
3579         {
3580                 .name = "power well 1",
3581                 /* Handled by the DMC firmware */
3582                 .always_on = true,
3583                 .domains = 0,
3584                 .ops = &hsw_power_well_ops,
3585                 .id = SKL_DISP_PW_1,
3586                 {
3587                         .hsw.regs = &hsw_power_well_regs,
3588                         .hsw.idx = SKL_PW_CTL_IDX_PW_1,
3589                         .hsw.has_fuses = true,
3590                 },
3591         },
3592         {
3593                 .name = "AUX A",
3594                 .domains = CNL_DISPLAY_AUX_A_POWER_DOMAINS,
3595                 .ops = &hsw_power_well_ops,
3596                 .id = DISP_PW_ID_NONE,
3597                 {
3598                         .hsw.regs = &hsw_power_well_regs,
3599                         .hsw.idx = GLK_PW_CTL_IDX_AUX_A,
3600                 },
3601         },
3602         {
3603                 .name = "AUX B",
3604                 .domains = CNL_DISPLAY_AUX_B_POWER_DOMAINS,
3605                 .ops = &hsw_power_well_ops,
3606                 .id = DISP_PW_ID_NONE,
3607                 {
3608                         .hsw.regs = &hsw_power_well_regs,
3609                         .hsw.idx = GLK_PW_CTL_IDX_AUX_B,
3610                 },
3611         },
3612         {
3613                 .name = "AUX C",
3614                 .domains = CNL_DISPLAY_AUX_C_POWER_DOMAINS,
3615                 .ops = &hsw_power_well_ops,
3616                 .id = DISP_PW_ID_NONE,
3617                 {
3618                         .hsw.regs = &hsw_power_well_regs,
3619                         .hsw.idx = GLK_PW_CTL_IDX_AUX_C,
3620                 },
3621         },
3622         {
3623                 .name = "AUX D",
3624                 .domains = CNL_DISPLAY_AUX_D_POWER_DOMAINS,
3625                 .ops = &hsw_power_well_ops,
3626                 .id = DISP_PW_ID_NONE,
3627                 {
3628                         .hsw.regs = &hsw_power_well_regs,
3629                         .hsw.idx = CNL_PW_CTL_IDX_AUX_D,
3630                 },
3631         },
3632         {
3633                 .name = "DC off",
3634                 .domains = CNL_DISPLAY_DC_OFF_POWER_DOMAINS,
3635                 .ops = &gen9_dc_off_power_well_ops,
3636                 .id = SKL_DISP_DC_OFF,
3637         },
3638         {
3639                 .name = "power well 2",
3640                 .domains = CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
3641                 .ops = &hsw_power_well_ops,
3642                 .id = SKL_DISP_PW_2,
3643                 {
3644                         .hsw.regs = &hsw_power_well_regs,
3645                         .hsw.idx = SKL_PW_CTL_IDX_PW_2,
3646                         .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
3647                         .hsw.has_vga = true,
3648                         .hsw.has_fuses = true,
3649                 },
3650         },
3651         {
3652                 .name = "DDI A IO power well",
3653                 .domains = CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS,
3654                 .ops = &hsw_power_well_ops,
3655                 .id = DISP_PW_ID_NONE,
3656                 {
3657                         .hsw.regs = &hsw_power_well_regs,
3658                         .hsw.idx = GLK_PW_CTL_IDX_DDI_A,
3659                 },
3660         },
3661         {
3662                 .name = "DDI B IO power well",
3663                 .domains = CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS,
3664                 .ops = &hsw_power_well_ops,
3665                 .id = DISP_PW_ID_NONE,
3666                 {
3667                         .hsw.regs = &hsw_power_well_regs,
3668                         .hsw.idx = SKL_PW_CTL_IDX_DDI_B,
3669                 },
3670         },
3671         {
3672                 .name = "DDI C IO power well",
3673                 .domains = CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS,
3674                 .ops = &hsw_power_well_ops,
3675                 .id = DISP_PW_ID_NONE,
3676                 {
3677                         .hsw.regs = &hsw_power_well_regs,
3678                         .hsw.idx = SKL_PW_CTL_IDX_DDI_C,
3679                 },
3680         },
3681         {
3682                 .name = "DDI D IO power well",
3683                 .domains = CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS,
3684                 .ops = &hsw_power_well_ops,
3685                 .id = DISP_PW_ID_NONE,
3686                 {
3687                         .hsw.regs = &hsw_power_well_regs,
3688                         .hsw.idx = SKL_PW_CTL_IDX_DDI_D,
3689                 },
3690         },
3691         {
3692                 .name = "DDI F IO power well",
3693                 .domains = CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS,
3694                 .ops = &hsw_power_well_ops,
3695                 .id = CNL_DISP_PW_DDI_F_IO,
3696                 {
3697                         .hsw.regs = &hsw_power_well_regs,
3698                         .hsw.idx = CNL_PW_CTL_IDX_DDI_F,
3699                 },
3700         },
3701         {
3702                 .name = "AUX F",
3703                 .domains = CNL_DISPLAY_AUX_F_POWER_DOMAINS,
3704                 .ops = &hsw_power_well_ops,
3705                 .id = CNL_DISP_PW_DDI_F_AUX,
3706                 {
3707                         .hsw.regs = &hsw_power_well_regs,
3708                         .hsw.idx = CNL_PW_CTL_IDX_AUX_F,
3709                 },
3710         },
3711 };
3712
3713 static const struct i915_power_well_ops icl_aux_power_well_ops = {
3714         .sync_hw = hsw_power_well_sync_hw,
3715         .enable = icl_aux_power_well_enable,
3716         .disable = icl_aux_power_well_disable,
3717         .is_enabled = hsw_power_well_enabled,
3718 };
3719
3720 static const struct i915_power_well_regs icl_aux_power_well_regs = {
3721         .bios   = ICL_PWR_WELL_CTL_AUX1,
3722         .driver = ICL_PWR_WELL_CTL_AUX2,
3723         .debug  = ICL_PWR_WELL_CTL_AUX4,
3724 };
3725
3726 static const struct i915_power_well_regs icl_ddi_power_well_regs = {
3727         .bios   = ICL_PWR_WELL_CTL_DDI1,
3728         .driver = ICL_PWR_WELL_CTL_DDI2,
3729         .debug  = ICL_PWR_WELL_CTL_DDI4,
3730 };
3731
3732 static const struct i915_power_well_desc icl_power_wells[] = {
3733         {
3734                 .name = "always-on",
3735                 .always_on = true,
3736                 .domains = POWER_DOMAIN_MASK,
3737                 .ops = &i9xx_always_on_power_well_ops,
3738                 .id = DISP_PW_ID_NONE,
3739         },
3740         {
3741                 .name = "power well 1",
3742                 /* Handled by the DMC firmware */
3743                 .always_on = true,
3744                 .domains = 0,
3745                 .ops = &hsw_power_well_ops,
3746                 .id = SKL_DISP_PW_1,
3747                 {
3748                         .hsw.regs = &hsw_power_well_regs,
3749                         .hsw.idx = ICL_PW_CTL_IDX_PW_1,
3750                         .hsw.has_fuses = true,
3751                 },
3752         },
3753         {
3754                 .name = "DC off",
3755                 .domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS,
3756                 .ops = &gen9_dc_off_power_well_ops,
3757                 .id = SKL_DISP_DC_OFF,
3758         },
3759         {
3760                 .name = "power well 2",
3761                 .domains = ICL_PW_2_POWER_DOMAINS,
3762                 .ops = &hsw_power_well_ops,
3763                 .id = SKL_DISP_PW_2,
3764                 {
3765                         .hsw.regs = &hsw_power_well_regs,
3766                         .hsw.idx = ICL_PW_CTL_IDX_PW_2,
3767                         .hsw.has_fuses = true,
3768                 },
3769         },
3770         {
3771                 .name = "power well 3",
3772                 .domains = ICL_PW_3_POWER_DOMAINS,
3773                 .ops = &hsw_power_well_ops,
3774                 .id = ICL_DISP_PW_3,
3775                 {
3776                         .hsw.regs = &hsw_power_well_regs,
3777                         .hsw.idx = ICL_PW_CTL_IDX_PW_3,
3778                         .hsw.irq_pipe_mask = BIT(PIPE_B),
3779                         .hsw.has_vga = true,
3780                         .hsw.has_fuses = true,
3781                 },
3782         },
3783         {
3784                 .name = "DDI A IO",
3785                 .domains = ICL_DDI_IO_A_POWER_DOMAINS,
3786                 .ops = &hsw_power_well_ops,
3787                 .id = DISP_PW_ID_NONE,
3788                 {
3789                         .hsw.regs = &icl_ddi_power_well_regs,
3790                         .hsw.idx = ICL_PW_CTL_IDX_DDI_A,
3791                 },
3792         },
3793         {
3794                 .name = "DDI B IO",
3795                 .domains = ICL_DDI_IO_B_POWER_DOMAINS,
3796                 .ops = &hsw_power_well_ops,
3797                 .id = DISP_PW_ID_NONE,
3798                 {
3799                         .hsw.regs = &icl_ddi_power_well_regs,
3800                         .hsw.idx = ICL_PW_CTL_IDX_DDI_B,
3801                 },
3802         },
3803         {
3804                 .name = "DDI C IO",
3805                 .domains = ICL_DDI_IO_C_POWER_DOMAINS,
3806                 .ops = &hsw_power_well_ops,
3807                 .id = DISP_PW_ID_NONE,
3808                 {
3809                         .hsw.regs = &icl_ddi_power_well_regs,
3810                         .hsw.idx = ICL_PW_CTL_IDX_DDI_C,
3811                 },
3812         },
3813         {
3814                 .name = "DDI D IO",
3815                 .domains = ICL_DDI_IO_D_POWER_DOMAINS,
3816                 .ops = &hsw_power_well_ops,
3817                 .id = DISP_PW_ID_NONE,
3818                 {
3819                         .hsw.regs = &icl_ddi_power_well_regs,
3820                         .hsw.idx = ICL_PW_CTL_IDX_DDI_D,
3821                 },
3822         },
3823         {
3824                 .name = "DDI E IO",
3825                 .domains = ICL_DDI_IO_E_POWER_DOMAINS,
3826                 .ops = &hsw_power_well_ops,
3827                 .id = DISP_PW_ID_NONE,
3828                 {
3829                         .hsw.regs = &icl_ddi_power_well_regs,
3830                         .hsw.idx = ICL_PW_CTL_IDX_DDI_E,
3831                 },
3832         },
3833         {
3834                 .name = "DDI F IO",
3835                 .domains = ICL_DDI_IO_F_POWER_DOMAINS,
3836                 .ops = &hsw_power_well_ops,
3837                 .id = DISP_PW_ID_NONE,
3838                 {
3839                         .hsw.regs = &icl_ddi_power_well_regs,
3840                         .hsw.idx = ICL_PW_CTL_IDX_DDI_F,
3841                 },
3842         },
3843         {
3844                 .name = "AUX A",
3845                 .domains = ICL_AUX_A_IO_POWER_DOMAINS,
3846                 .ops = &icl_aux_power_well_ops,
3847                 .id = DISP_PW_ID_NONE,
3848                 {
3849                         .hsw.regs = &icl_aux_power_well_regs,
3850                         .hsw.idx = ICL_PW_CTL_IDX_AUX_A,
3851                 },
3852         },
3853         {
3854                 .name = "AUX B",
3855                 .domains = ICL_AUX_B_IO_POWER_DOMAINS,
3856                 .ops = &icl_aux_power_well_ops,
3857                 .id = DISP_PW_ID_NONE,
3858                 {
3859                         .hsw.regs = &icl_aux_power_well_regs,
3860                         .hsw.idx = ICL_PW_CTL_IDX_AUX_B,
3861                 },
3862         },
3863         {
3864                 .name = "AUX C TC1",
3865                 .domains = ICL_AUX_C_TC1_IO_POWER_DOMAINS,
3866                 .ops = &icl_aux_power_well_ops,
3867                 .id = DISP_PW_ID_NONE,
3868                 {
3869                         .hsw.regs = &icl_aux_power_well_regs,
3870                         .hsw.idx = ICL_PW_CTL_IDX_AUX_C,
3871                         .hsw.is_tc_tbt = false,
3872                 },
3873         },
3874         {
3875                 .name = "AUX D TC2",
3876                 .domains = ICL_AUX_D_TC2_IO_POWER_DOMAINS,
3877                 .ops = &icl_aux_power_well_ops,
3878                 .id = DISP_PW_ID_NONE,
3879                 {
3880                         .hsw.regs = &icl_aux_power_well_regs,
3881                         .hsw.idx = ICL_PW_CTL_IDX_AUX_D,
3882                         .hsw.is_tc_tbt = false,
3883                 },
3884         },
3885         {
3886                 .name = "AUX E TC3",
3887                 .domains = ICL_AUX_E_TC3_IO_POWER_DOMAINS,
3888                 .ops = &icl_aux_power_well_ops,
3889                 .id = DISP_PW_ID_NONE,
3890                 {
3891                         .hsw.regs = &icl_aux_power_well_regs,
3892                         .hsw.idx = ICL_PW_CTL_IDX_AUX_E,
3893                         .hsw.is_tc_tbt = false,
3894                 },
3895         },
3896         {
3897                 .name = "AUX F TC4",
3898                 .domains = ICL_AUX_F_TC4_IO_POWER_DOMAINS,
3899                 .ops = &icl_aux_power_well_ops,
3900                 .id = DISP_PW_ID_NONE,
3901                 {
3902                         .hsw.regs = &icl_aux_power_well_regs,
3903                         .hsw.idx = ICL_PW_CTL_IDX_AUX_F,
3904                         .hsw.is_tc_tbt = false,
3905                 },
3906         },
3907         {
3908                 .name = "AUX C TBT1",
3909                 .domains = ICL_AUX_C_TBT1_IO_POWER_DOMAINS,
3910                 .ops = &icl_aux_power_well_ops,
3911                 .id = DISP_PW_ID_NONE,
3912                 {
3913                         .hsw.regs = &icl_aux_power_well_regs,
3914                         .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT1,
3915                         .hsw.is_tc_tbt = true,
3916                 },
3917         },
3918         {
3919                 .name = "AUX D TBT2",
3920                 .domains = ICL_AUX_D_TBT2_IO_POWER_DOMAINS,
3921                 .ops = &icl_aux_power_well_ops,
3922                 .id = DISP_PW_ID_NONE,
3923                 {
3924                         .hsw.regs = &icl_aux_power_well_regs,
3925                         .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT2,
3926                         .hsw.is_tc_tbt = true,
3927                 },
3928         },
3929         {
3930                 .name = "AUX E TBT3",
3931                 .domains = ICL_AUX_E_TBT3_IO_POWER_DOMAINS,
3932                 .ops = &icl_aux_power_well_ops,
3933                 .id = DISP_PW_ID_NONE,
3934                 {
3935                         .hsw.regs = &icl_aux_power_well_regs,
3936                         .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT3,
3937                         .hsw.is_tc_tbt = true,
3938                 },
3939         },
3940         {
3941                 .name = "AUX F TBT4",
3942                 .domains = ICL_AUX_F_TBT4_IO_POWER_DOMAINS,
3943                 .ops = &icl_aux_power_well_ops,
3944                 .id = DISP_PW_ID_NONE,
3945                 {
3946                         .hsw.regs = &icl_aux_power_well_regs,
3947                         .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT4,
3948                         .hsw.is_tc_tbt = true,
3949                 },
3950         },
3951         {
3952                 .name = "power well 4",
3953                 .domains = ICL_PW_4_POWER_DOMAINS,
3954                 .ops = &hsw_power_well_ops,
3955                 .id = DISP_PW_ID_NONE,
3956                 {
3957                         .hsw.regs = &hsw_power_well_regs,
3958                         .hsw.idx = ICL_PW_CTL_IDX_PW_4,
3959                         .hsw.has_fuses = true,
3960                         .hsw.irq_pipe_mask = BIT(PIPE_C),
3961                 },
3962         },
3963 };
3964
3965 static void
3966 tgl_tc_cold_request(struct drm_i915_private *i915, bool block)
3967 {
3968         u8 tries = 0;
3969         int ret;
3970
3971         while (1) {
3972                 u32 low_val;
3973                 u32 high_val = 0;
3974
3975                 if (block)
3976                         low_val = TGL_PCODE_EXIT_TCCOLD_DATA_L_BLOCK_REQ;
3977                 else
3978                         low_val = TGL_PCODE_EXIT_TCCOLD_DATA_L_UNBLOCK_REQ;
3979
3980                 /*
3981                  * Spec states that we should timeout the request after 200us
3982                  * but the function below will timeout after 500us
3983                  */
3984                 ret = sandybridge_pcode_read(i915, TGL_PCODE_TCCOLD, &low_val,
3985                                              &high_val);
3986                 if (ret == 0) {
3987                         if (block &&
3988                             (low_val & TGL_PCODE_EXIT_TCCOLD_DATA_L_EXIT_FAILED))
3989                                 ret = -EIO;
3990                         else
3991                                 break;
3992                 }
3993
3994                 if (++tries == 3)
3995                         break;
3996
3997                 msleep(1);
3998         }
3999
4000         if (ret)
4001                 drm_err(&i915->drm, "TC cold %sblock failed\n",
4002                         block ? "" : "un");
4003         else
4004                 drm_dbg_kms(&i915->drm, "TC cold %sblock succeeded\n",
4005                             block ? "" : "un");
4006 }
4007
4008 static void
4009 tgl_tc_cold_off_power_well_enable(struct drm_i915_private *i915,
4010                                   struct i915_power_well *power_well)
4011 {
4012         tgl_tc_cold_request(i915, true);
4013 }
4014
4015 static void
4016 tgl_tc_cold_off_power_well_disable(struct drm_i915_private *i915,
4017                                    struct i915_power_well *power_well)
4018 {
4019         tgl_tc_cold_request(i915, false);
4020 }
4021
4022 static void
4023 tgl_tc_cold_off_power_well_sync_hw(struct drm_i915_private *i915,
4024                                    struct i915_power_well *power_well)
4025 {
4026         if (power_well->count > 0)
4027                 tgl_tc_cold_off_power_well_enable(i915, power_well);
4028         else
4029                 tgl_tc_cold_off_power_well_disable(i915, power_well);
4030 }
4031
4032 static bool
4033 tgl_tc_cold_off_power_well_is_enabled(struct drm_i915_private *dev_priv,
4034                                       struct i915_power_well *power_well)
4035 {
4036         /*
4037          * Not the correctly implementation but there is no way to just read it
4038          * from PCODE, so returning count to avoid state mismatch errors
4039          */
4040         return power_well->count;
4041 }
4042
4043 static const struct i915_power_well_ops tgl_tc_cold_off_ops = {
4044         .sync_hw = tgl_tc_cold_off_power_well_sync_hw,
4045         .enable = tgl_tc_cold_off_power_well_enable,
4046         .disable = tgl_tc_cold_off_power_well_disable,
4047         .is_enabled = tgl_tc_cold_off_power_well_is_enabled,
4048 };
4049
4050 static const struct i915_power_well_desc tgl_power_wells[] = {
4051         {
4052                 .name = "always-on",
4053                 .always_on = true,
4054                 .domains = POWER_DOMAIN_MASK,
4055                 .ops = &i9xx_always_on_power_well_ops,
4056                 .id = DISP_PW_ID_NONE,
4057         },
4058         {
4059                 .name = "power well 1",
4060                 /* Handled by the DMC firmware */
4061                 .always_on = true,
4062                 .domains = 0,
4063                 .ops = &hsw_power_well_ops,
4064                 .id = SKL_DISP_PW_1,
4065                 {
4066                         .hsw.regs = &hsw_power_well_regs,
4067                         .hsw.idx = ICL_PW_CTL_IDX_PW_1,
4068                         .hsw.has_fuses = true,
4069                 },
4070         },
4071         {
4072                 .name = "DC off",
4073                 .domains = TGL_DISPLAY_DC_OFF_POWER_DOMAINS,
4074                 .ops = &gen9_dc_off_power_well_ops,
4075                 .id = SKL_DISP_DC_OFF,
4076         },
4077         {
4078                 .name = "power well 2",
4079                 .domains = TGL_PW_2_POWER_DOMAINS,
4080                 .ops = &hsw_power_well_ops,
4081                 .id = SKL_DISP_PW_2,
4082                 {
4083                         .hsw.regs = &hsw_power_well_regs,
4084                         .hsw.idx = ICL_PW_CTL_IDX_PW_2,
4085                         .hsw.has_fuses = true,
4086                 },
4087         },
4088         {
4089                 .name = "power well 3",
4090                 .domains = TGL_PW_3_POWER_DOMAINS,
4091                 .ops = &hsw_power_well_ops,
4092                 .id = ICL_DISP_PW_3,
4093                 {
4094                         .hsw.regs = &hsw_power_well_regs,
4095                         .hsw.idx = ICL_PW_CTL_IDX_PW_3,
4096                         .hsw.irq_pipe_mask = BIT(PIPE_B),
4097                         .hsw.has_vga = true,
4098                         .hsw.has_fuses = true,
4099                 },
4100         },
4101         {
4102                 .name = "DDI A IO",
4103                 .domains = ICL_DDI_IO_A_POWER_DOMAINS,
4104                 .ops = &hsw_power_well_ops,
4105                 .id = DISP_PW_ID_NONE,
4106                 {
4107                         .hsw.regs = &icl_ddi_power_well_regs,
4108                         .hsw.idx = ICL_PW_CTL_IDX_DDI_A,
4109                 }
4110         },
4111         {
4112                 .name = "DDI B IO",
4113                 .domains = ICL_DDI_IO_B_POWER_DOMAINS,
4114                 .ops = &hsw_power_well_ops,
4115                 .id = DISP_PW_ID_NONE,
4116                 {
4117                         .hsw.regs = &icl_ddi_power_well_regs,
4118                         .hsw.idx = ICL_PW_CTL_IDX_DDI_B,
4119                 }
4120         },
4121         {
4122                 .name = "DDI C IO",
4123                 .domains = ICL_DDI_IO_C_POWER_DOMAINS,
4124                 .ops = &hsw_power_well_ops,
4125                 .id = DISP_PW_ID_NONE,
4126                 {
4127                         .hsw.regs = &icl_ddi_power_well_regs,
4128                         .hsw.idx = ICL_PW_CTL_IDX_DDI_C,
4129                 }
4130         },
4131         {
4132                 .name = "DDI IO TC1",
4133                 .domains = TGL_DDI_IO_TC1_POWER_DOMAINS,
4134                 .ops = &hsw_power_well_ops,
4135                 .id = DISP_PW_ID_NONE,
4136                 {
4137                         .hsw.regs = &icl_ddi_power_well_regs,
4138                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1,
4139                 },
4140         },
4141         {
4142                 .name = "DDI IO TC2",
4143                 .domains = TGL_DDI_IO_TC2_POWER_DOMAINS,
4144                 .ops = &hsw_power_well_ops,
4145                 .id = DISP_PW_ID_NONE,
4146                 {
4147                         .hsw.regs = &icl_ddi_power_well_regs,
4148                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2,
4149                 },
4150         },
4151         {
4152                 .name = "DDI IO TC3",
4153                 .domains = TGL_DDI_IO_TC3_POWER_DOMAINS,
4154                 .ops = &hsw_power_well_ops,
4155                 .id = DISP_PW_ID_NONE,
4156                 {
4157                         .hsw.regs = &icl_ddi_power_well_regs,
4158                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC3,
4159                 },
4160         },
4161         {
4162                 .name = "DDI IO TC4",
4163                 .domains = TGL_DDI_IO_TC4_POWER_DOMAINS,
4164                 .ops = &hsw_power_well_ops,
4165                 .id = DISP_PW_ID_NONE,
4166                 {
4167                         .hsw.regs = &icl_ddi_power_well_regs,
4168                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC4,
4169                 },
4170         },
4171         {
4172                 .name = "DDI IO TC5",
4173                 .domains = TGL_DDI_IO_TC5_POWER_DOMAINS,
4174                 .ops = &hsw_power_well_ops,
4175                 .id = DISP_PW_ID_NONE,
4176                 {
4177                         .hsw.regs = &icl_ddi_power_well_regs,
4178                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC5,
4179                 },
4180         },
4181         {
4182                 .name = "DDI IO TC6",
4183                 .domains = TGL_DDI_IO_TC6_POWER_DOMAINS,
4184                 .ops = &hsw_power_well_ops,
4185                 .id = DISP_PW_ID_NONE,
4186                 {
4187                         .hsw.regs = &icl_ddi_power_well_regs,
4188                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC6,
4189                 },
4190         },
4191         {
4192                 .name = "TC cold off",
4193                 .domains = TGL_TC_COLD_OFF_POWER_DOMAINS,
4194                 .ops = &tgl_tc_cold_off_ops,
4195                 .id = TGL_DISP_PW_TC_COLD_OFF,
4196         },
4197         {
4198                 .name = "AUX A",
4199                 .domains = TGL_AUX_A_IO_POWER_DOMAINS,
4200                 .ops = &icl_aux_power_well_ops,
4201                 .id = DISP_PW_ID_NONE,
4202                 {
4203                         .hsw.regs = &icl_aux_power_well_regs,
4204                         .hsw.idx = ICL_PW_CTL_IDX_AUX_A,
4205                 },
4206         },
4207         {
4208                 .name = "AUX B",
4209                 .domains = TGL_AUX_B_IO_POWER_DOMAINS,
4210                 .ops = &icl_aux_power_well_ops,
4211                 .id = DISP_PW_ID_NONE,
4212                 {
4213                         .hsw.regs = &icl_aux_power_well_regs,
4214                         .hsw.idx = ICL_PW_CTL_IDX_AUX_B,
4215                 },
4216         },
4217         {
4218                 .name = "AUX C",
4219                 .domains = TGL_AUX_C_IO_POWER_DOMAINS,
4220                 .ops = &icl_aux_power_well_ops,
4221                 .id = DISP_PW_ID_NONE,
4222                 {
4223                         .hsw.regs = &icl_aux_power_well_regs,
4224                         .hsw.idx = ICL_PW_CTL_IDX_AUX_C,
4225                 },
4226         },
4227         {
4228                 .name = "AUX USBC1",
4229                 .domains = TGL_AUX_IO_USBC1_POWER_DOMAINS,
4230                 .ops = &icl_aux_power_well_ops,
4231                 .id = DISP_PW_ID_NONE,
4232                 {
4233                         .hsw.regs = &icl_aux_power_well_regs,
4234                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1,
4235                         .hsw.is_tc_tbt = false,
4236                 },
4237         },
4238         {
4239                 .name = "AUX USBC2",
4240                 .domains = TGL_AUX_IO_USBC2_POWER_DOMAINS,
4241                 .ops = &icl_aux_power_well_ops,
4242                 .id = DISP_PW_ID_NONE,
4243                 {
4244                         .hsw.regs = &icl_aux_power_well_regs,
4245                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2,
4246                         .hsw.is_tc_tbt = false,
4247                 },
4248         },
4249         {
4250                 .name = "AUX USBC3",
4251                 .domains = TGL_AUX_IO_USBC3_POWER_DOMAINS,
4252                 .ops = &icl_aux_power_well_ops,
4253                 .id = DISP_PW_ID_NONE,
4254                 {
4255                         .hsw.regs = &icl_aux_power_well_regs,
4256                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC3,
4257                         .hsw.is_tc_tbt = false,
4258                 },
4259         },
4260         {
4261                 .name = "AUX USBC4",
4262                 .domains = TGL_AUX_IO_USBC4_POWER_DOMAINS,
4263                 .ops = &icl_aux_power_well_ops,
4264                 .id = DISP_PW_ID_NONE,
4265                 {
4266                         .hsw.regs = &icl_aux_power_well_regs,
4267                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC4,
4268                         .hsw.is_tc_tbt = false,
4269                 },
4270         },
4271         {
4272                 .name = "AUX USBC5",
4273                 .domains = TGL_AUX_IO_USBC5_POWER_DOMAINS,
4274                 .ops = &icl_aux_power_well_ops,
4275                 .id = DISP_PW_ID_NONE,
4276                 {
4277                         .hsw.regs = &icl_aux_power_well_regs,
4278                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC5,
4279                         .hsw.is_tc_tbt = false,
4280                 },
4281         },
4282         {
4283                 .name = "AUX USBC6",
4284                 .domains = TGL_AUX_IO_USBC6_POWER_DOMAINS,
4285                 .ops = &icl_aux_power_well_ops,
4286                 .id = DISP_PW_ID_NONE,
4287                 {
4288                         .hsw.regs = &icl_aux_power_well_regs,
4289                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC6,
4290                         .hsw.is_tc_tbt = false,
4291                 },
4292         },
4293         {
4294                 .name = "AUX TBT1",
4295                 .domains = TGL_AUX_IO_TBT1_POWER_DOMAINS,
4296                 .ops = &icl_aux_power_well_ops,
4297                 .id = DISP_PW_ID_NONE,
4298                 {
4299                         .hsw.regs = &icl_aux_power_well_regs,
4300                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT1,
4301                         .hsw.is_tc_tbt = true,
4302                 },
4303         },
4304         {
4305                 .name = "AUX TBT2",
4306                 .domains = TGL_AUX_IO_TBT2_POWER_DOMAINS,
4307                 .ops = &icl_aux_power_well_ops,
4308                 .id = DISP_PW_ID_NONE,
4309                 {
4310                         .hsw.regs = &icl_aux_power_well_regs,
4311                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT2,
4312                         .hsw.is_tc_tbt = true,
4313                 },
4314         },
4315         {
4316                 .name = "AUX TBT3",
4317                 .domains = TGL_AUX_IO_TBT3_POWER_DOMAINS,
4318                 .ops = &icl_aux_power_well_ops,
4319                 .id = DISP_PW_ID_NONE,
4320                 {
4321                         .hsw.regs = &icl_aux_power_well_regs,
4322                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT3,
4323                         .hsw.is_tc_tbt = true,
4324                 },
4325         },
4326         {
4327                 .name = "AUX TBT4",
4328                 .domains = TGL_AUX_IO_TBT4_POWER_DOMAINS,
4329                 .ops = &icl_aux_power_well_ops,
4330                 .id = DISP_PW_ID_NONE,
4331                 {
4332                         .hsw.regs = &icl_aux_power_well_regs,
4333                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT4,
4334                         .hsw.is_tc_tbt = true,
4335                 },
4336         },
4337         {
4338                 .name = "AUX TBT5",
4339                 .domains = TGL_AUX_IO_TBT5_POWER_DOMAINS,
4340                 .ops = &icl_aux_power_well_ops,
4341                 .id = DISP_PW_ID_NONE,
4342                 {
4343                         .hsw.regs = &icl_aux_power_well_regs,
4344                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT5,
4345                         .hsw.is_tc_tbt = true,
4346                 },
4347         },
4348         {
4349                 .name = "AUX TBT6",
4350                 .domains = TGL_AUX_IO_TBT6_POWER_DOMAINS,
4351                 .ops = &icl_aux_power_well_ops,
4352                 .id = DISP_PW_ID_NONE,
4353                 {
4354                         .hsw.regs = &icl_aux_power_well_regs,
4355                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT6,
4356                         .hsw.is_tc_tbt = true,
4357                 },
4358         },
4359         {
4360                 .name = "power well 4",
4361                 .domains = TGL_PW_4_POWER_DOMAINS,
4362                 .ops = &hsw_power_well_ops,
4363                 .id = DISP_PW_ID_NONE,
4364                 {
4365                         .hsw.regs = &hsw_power_well_regs,
4366                         .hsw.idx = ICL_PW_CTL_IDX_PW_4,
4367                         .hsw.has_fuses = true,
4368                         .hsw.irq_pipe_mask = BIT(PIPE_C),
4369                 }
4370         },
4371         {
4372                 .name = "power well 5",
4373                 .domains = TGL_PW_5_POWER_DOMAINS,
4374                 .ops = &hsw_power_well_ops,
4375                 .id = DISP_PW_ID_NONE,
4376                 {
4377                         .hsw.regs = &hsw_power_well_regs,
4378                         .hsw.idx = TGL_PW_CTL_IDX_PW_5,
4379                         .hsw.has_fuses = true,
4380                         .hsw.irq_pipe_mask = BIT(PIPE_D),
4381                 },
4382         },
4383 };
4384
4385 static const struct i915_power_well_desc rkl_power_wells[] = {
4386         {
4387                 .name = "always-on",
4388                 .always_on = true,
4389                 .domains = POWER_DOMAIN_MASK,
4390                 .ops = &i9xx_always_on_power_well_ops,
4391                 .id = DISP_PW_ID_NONE,
4392         },
4393         {
4394                 .name = "power well 1",
4395                 /* Handled by the DMC firmware */
4396                 .always_on = true,
4397                 .domains = 0,
4398                 .ops = &hsw_power_well_ops,
4399                 .id = SKL_DISP_PW_1,
4400                 {
4401                         .hsw.regs = &hsw_power_well_regs,
4402                         .hsw.idx = ICL_PW_CTL_IDX_PW_1,
4403                         .hsw.has_fuses = true,
4404                 },
4405         },
4406         {
4407                 .name = "DC off",
4408                 .domains = RKL_DISPLAY_DC_OFF_POWER_DOMAINS,
4409                 .ops = &gen9_dc_off_power_well_ops,
4410                 .id = SKL_DISP_DC_OFF,
4411         },
4412         {
4413                 .name = "power well 3",
4414                 .domains = RKL_PW_3_POWER_DOMAINS,
4415                 .ops = &hsw_power_well_ops,
4416                 .id = ICL_DISP_PW_3,
4417                 {
4418                         .hsw.regs = &hsw_power_well_regs,
4419                         .hsw.idx = ICL_PW_CTL_IDX_PW_3,
4420                         .hsw.irq_pipe_mask = BIT(PIPE_B),
4421                         .hsw.has_vga = true,
4422                         .hsw.has_fuses = true,
4423                 },
4424         },
4425         {
4426                 .name = "power well 4",
4427                 .domains = RKL_PW_4_POWER_DOMAINS,
4428                 .ops = &hsw_power_well_ops,
4429                 .id = DISP_PW_ID_NONE,
4430                 {
4431                         .hsw.regs = &hsw_power_well_regs,
4432                         .hsw.idx = ICL_PW_CTL_IDX_PW_4,
4433                         .hsw.has_fuses = true,
4434                         .hsw.irq_pipe_mask = BIT(PIPE_C),
4435                 }
4436         },
4437         {
4438                 .name = "DDI A IO",
4439                 .domains = ICL_DDI_IO_A_POWER_DOMAINS,
4440                 .ops = &hsw_power_well_ops,
4441                 .id = DISP_PW_ID_NONE,
4442                 {
4443                         .hsw.regs = &icl_ddi_power_well_regs,
4444                         .hsw.idx = ICL_PW_CTL_IDX_DDI_A,
4445                 }
4446         },
4447         {
4448                 .name = "DDI B IO",
4449                 .domains = ICL_DDI_IO_B_POWER_DOMAINS,
4450                 .ops = &hsw_power_well_ops,
4451                 .id = DISP_PW_ID_NONE,
4452                 {
4453                         .hsw.regs = &icl_ddi_power_well_regs,
4454                         .hsw.idx = ICL_PW_CTL_IDX_DDI_B,
4455                 }
4456         },
4457         {
4458                 .name = "DDI IO TC1",
4459                 .domains = TGL_DDI_IO_TC1_POWER_DOMAINS,
4460                 .ops = &hsw_power_well_ops,
4461                 .id = DISP_PW_ID_NONE,
4462                 {
4463                         .hsw.regs = &icl_ddi_power_well_regs,
4464                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1,
4465                 },
4466         },
4467         {
4468                 .name = "DDI IO TC2",
4469                 .domains = TGL_DDI_IO_TC2_POWER_DOMAINS,
4470                 .ops = &hsw_power_well_ops,
4471                 .id = DISP_PW_ID_NONE,
4472                 {
4473                         .hsw.regs = &icl_ddi_power_well_regs,
4474                         .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2,
4475                 },
4476         },
4477         {
4478                 .name = "AUX A",
4479                 .domains = ICL_AUX_A_IO_POWER_DOMAINS,
4480                 .ops = &icl_aux_power_well_ops,
4481                 .id = DISP_PW_ID_NONE,
4482                 {
4483                         .hsw.regs = &icl_aux_power_well_regs,
4484                         .hsw.idx = ICL_PW_CTL_IDX_AUX_A,
4485                 },
4486         },
4487         {
4488                 .name = "AUX B",
4489                 .domains = ICL_AUX_B_IO_POWER_DOMAINS,
4490                 .ops = &icl_aux_power_well_ops,
4491                 .id = DISP_PW_ID_NONE,
4492                 {
4493                         .hsw.regs = &icl_aux_power_well_regs,
4494                         .hsw.idx = ICL_PW_CTL_IDX_AUX_B,
4495                 },
4496         },
4497         {
4498                 .name = "AUX USBC1",
4499                 .domains = TGL_AUX_IO_USBC1_POWER_DOMAINS,
4500                 .ops = &icl_aux_power_well_ops,
4501                 .id = DISP_PW_ID_NONE,
4502                 {
4503                         .hsw.regs = &icl_aux_power_well_regs,
4504                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1,
4505                 },
4506         },
4507         {
4508                 .name = "AUX USBC2",
4509                 .domains = TGL_AUX_IO_USBC2_POWER_DOMAINS,
4510                 .ops = &icl_aux_power_well_ops,
4511                 .id = DISP_PW_ID_NONE,
4512                 {
4513                         .hsw.regs = &icl_aux_power_well_regs,
4514                         .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2,
4515                 },
4516         },
4517 };
4518
4519 static int
4520 sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
4521                                    int disable_power_well)
4522 {
4523         if (disable_power_well >= 0)
4524                 return !!disable_power_well;
4525
4526         return 1;
4527 }
4528
4529 static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
4530                                int enable_dc)
4531 {
4532         u32 mask;
4533         int requested_dc;
4534         int max_dc;
4535
4536         if (IS_DG1(dev_priv))
4537                 max_dc = 3;
4538         else if (INTEL_GEN(dev_priv) >= 12)
4539                 max_dc = 4;
4540         else if (INTEL_GEN(dev_priv) >= 10 || IS_GEN9_BC(dev_priv))
4541                 max_dc = 2;
4542         else if (IS_GEN9_LP(dev_priv))
4543                 max_dc = 1;
4544         else
4545                 max_dc = 0;
4546
4547         /*
4548          * DC9 has a separate HW flow from the rest of the DC states,
4549          * not depending on the DMC firmware. It's needed by system
4550          * suspend/resume, so allow it unconditionally.
4551          */
4552         mask = IS_GEN9_LP(dev_priv) || INTEL_GEN(dev_priv) >= 11 ?
4553                DC_STATE_EN_DC9 : 0;
4554
4555         if (!dev_priv->params.disable_power_well)
4556                 max_dc = 0;
4557
4558         if (enable_dc >= 0 && enable_dc <= max_dc) {
4559                 requested_dc = enable_dc;
4560         } else if (enable_dc == -1) {
4561                 requested_dc = max_dc;
4562         } else if (enable_dc > max_dc && enable_dc <= 4) {
4563                 drm_dbg_kms(&dev_priv->drm,
4564                             "Adjusting requested max DC state (%d->%d)\n",
4565                             enable_dc, max_dc);
4566                 requested_dc = max_dc;
4567         } else {
4568                 drm_err(&dev_priv->drm,
4569                         "Unexpected value for enable_dc (%d)\n", enable_dc);
4570                 requested_dc = max_dc;
4571         }
4572
4573         switch (requested_dc) {
4574         case 4:
4575                 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6;
4576                 break;
4577         case 3:
4578                 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC5;
4579                 break;
4580         case 2:
4581                 mask |= DC_STATE_EN_UPTO_DC6;
4582                 break;
4583         case 1:
4584                 mask |= DC_STATE_EN_UPTO_DC5;
4585                 break;
4586         }
4587
4588         drm_dbg_kms(&dev_priv->drm, "Allowed DC state mask %02x\n", mask);
4589
4590         return mask;
4591 }
4592
4593 static int
4594 __set_power_wells(struct i915_power_domains *power_domains,
4595                   const struct i915_power_well_desc *power_well_descs,
4596                   int power_well_descs_sz, u64 skip_mask)
4597 {
4598         struct drm_i915_private *i915 = container_of(power_domains,
4599                                                      struct drm_i915_private,
4600                                                      power_domains);
4601         u64 power_well_ids = 0;
4602         int power_well_count = 0;
4603         int i, plt_idx = 0;
4604
4605         for (i = 0; i < power_well_descs_sz; i++)
4606                 if (!(BIT_ULL(power_well_descs[i].id) & skip_mask))
4607                         power_well_count++;
4608
4609         power_domains->power_well_count = power_well_count;
4610         power_domains->power_wells =
4611                                 kcalloc(power_well_count,
4612                                         sizeof(*power_domains->power_wells),
4613                                         GFP_KERNEL);
4614         if (!power_domains->power_wells)
4615                 return -ENOMEM;
4616
4617         for (i = 0; i < power_well_descs_sz; i++) {
4618                 enum i915_power_well_id id = power_well_descs[i].id;
4619
4620                 if (BIT_ULL(id) & skip_mask)
4621                         continue;
4622
4623                 power_domains->power_wells[plt_idx++].desc =
4624                         &power_well_descs[i];
4625
4626                 if (id == DISP_PW_ID_NONE)
4627                         continue;
4628
4629                 drm_WARN_ON(&i915->drm, id >= sizeof(power_well_ids) * 8);
4630                 drm_WARN_ON(&i915->drm, power_well_ids & BIT_ULL(id));
4631                 power_well_ids |= BIT_ULL(id);
4632         }
4633
4634         return 0;
4635 }
4636
4637 #define set_power_wells_mask(power_domains, __power_well_descs, skip_mask) \
4638         __set_power_wells(power_domains, __power_well_descs, \
4639                           ARRAY_SIZE(__power_well_descs), skip_mask)
4640
4641 #define set_power_wells(power_domains, __power_well_descs) \
4642         set_power_wells_mask(power_domains, __power_well_descs, 0)
4643
4644 /**
4645  * intel_power_domains_init - initializes the power domain structures
4646  * @dev_priv: i915 device instance
4647  *
4648  * Initializes the power domain structures for @dev_priv depending upon the
4649  * supported platform.
4650  */
4651 int intel_power_domains_init(struct drm_i915_private *dev_priv)
4652 {
4653         struct i915_power_domains *power_domains = &dev_priv->power_domains;
4654         int err;
4655
4656         dev_priv->params.disable_power_well =
4657                 sanitize_disable_power_well_option(dev_priv,
4658                                                    dev_priv->params.disable_power_well);
4659         dev_priv->csr.allowed_dc_mask =
4660                 get_allowed_dc_mask(dev_priv, dev_priv->params.enable_dc);
4661
4662         dev_priv->csr.target_dc_state =
4663                 sanitize_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
4664
4665         BUILD_BUG_ON(POWER_DOMAIN_NUM > 64);
4666
4667         mutex_init(&power_domains->lock);
4668
4669         INIT_DELAYED_WORK(&power_domains->async_put_work,
4670                           intel_display_power_put_async_work);
4671
4672         /*
4673          * The enabling order will be from lower to higher indexed wells,
4674          * the disabling order is reversed.
4675          */
4676         if (IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv)) {
4677                 err = set_power_wells_mask(power_domains, tgl_power_wells,
4678                                            BIT_ULL(TGL_DISP_PW_TC_COLD_OFF));
4679         } else if (IS_ROCKETLAKE(dev_priv)) {
4680                 err = set_power_wells(power_domains, rkl_power_wells);
4681         } else if (IS_GEN(dev_priv, 12)) {
4682                 err = set_power_wells(power_domains, tgl_power_wells);
4683         } else if (IS_GEN(dev_priv, 11)) {
4684                 err = set_power_wells(power_domains, icl_power_wells);
4685         } else if (IS_CNL_WITH_PORT_F(dev_priv)) {
4686                 err = set_power_wells(power_domains, cnl_power_wells);
4687         } else if (IS_CANNONLAKE(dev_priv)) {
4688                 err = set_power_wells_mask(power_domains, cnl_power_wells,
4689                                            BIT_ULL(CNL_DISP_PW_DDI_F_IO) |
4690                                            BIT_ULL(CNL_DISP_PW_DDI_F_AUX));
4691         } else if (IS_GEMINILAKE(dev_priv)) {
4692                 err = set_power_wells(power_domains, glk_power_wells);
4693         } else if (IS_BROXTON(dev_priv)) {
4694                 err = set_power_wells(power_domains, bxt_power_wells);
4695         } else if (IS_GEN9_BC(dev_priv)) {
4696                 err = set_power_wells(power_domains, skl_power_wells);
4697         } else if (IS_CHERRYVIEW(dev_priv)) {
4698                 err = set_power_wells(power_domains, chv_power_wells);
4699         } else if (IS_BROADWELL(dev_priv)) {
4700                 err = set_power_wells(power_domains, bdw_power_wells);
4701         } else if (IS_HASWELL(dev_priv)) {
4702                 err = set_power_wells(power_domains, hsw_power_wells);
4703         } else if (IS_VALLEYVIEW(dev_priv)) {
4704                 err = set_power_wells(power_domains, vlv_power_wells);
4705         } else if (IS_I830(dev_priv)) {
4706                 err = set_power_wells(power_domains, i830_power_wells);
4707         } else {
4708                 err = set_power_wells(power_domains, i9xx_always_on_power_well);
4709         }
4710
4711         return err;
4712 }
4713
4714 /**
4715  * intel_power_domains_cleanup - clean up power domains resources
4716  * @dev_priv: i915 device instance
4717  *
4718  * Release any resources acquired by intel_power_domains_init()
4719  */
4720 void intel_power_domains_cleanup(struct drm_i915_private *dev_priv)
4721 {
4722         kfree(dev_priv->power_domains.power_wells);
4723 }
4724
4725 static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv)
4726 {
4727         struct i915_power_domains *power_domains = &dev_priv->power_domains;
4728         struct i915_power_well *power_well;
4729
4730         mutex_lock(&power_domains->lock);
4731         for_each_power_well(dev_priv, power_well) {
4732                 power_well->desc->ops->sync_hw(dev_priv, power_well);
4733                 power_well->hw_enabled =
4734                         power_well->desc->ops->is_enabled(dev_priv, power_well);
4735         }
4736         mutex_unlock(&power_domains->lock);
4737 }
4738
4739 static void gen9_dbuf_slice_set(struct drm_i915_private *dev_priv,
4740                                 enum dbuf_slice slice, bool enable)
4741 {
4742         i915_reg_t reg = DBUF_CTL_S(slice);
4743         bool state;
4744         u32 val;
4745
4746         val = intel_de_read(dev_priv, reg);
4747         if (enable)
4748                 val |= DBUF_POWER_REQUEST;
4749         else
4750                 val &= ~DBUF_POWER_REQUEST;
4751         intel_de_write(dev_priv, reg, val);
4752         intel_de_posting_read(dev_priv, reg);
4753         udelay(10);
4754
4755         state = intel_de_read(dev_priv, reg) & DBUF_POWER_STATE;
4756         drm_WARN(&dev_priv->drm, enable != state,
4757                  "DBuf slice %d power %s timeout!\n",
4758                  slice, enable ? "enable" : "disable");
4759 }
4760
4761 void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
4762                              u8 req_slices)
4763 {
4764         int num_slices = INTEL_INFO(dev_priv)->num_supported_dbuf_slices;
4765         struct i915_power_domains *power_domains = &dev_priv->power_domains;
4766         enum dbuf_slice slice;
4767
4768         drm_WARN(&dev_priv->drm, req_slices & ~(BIT(num_slices) - 1),
4769                  "Invalid set of dbuf slices (0x%x) requested (num dbuf slices %d)\n",
4770                  req_slices, num_slices);
4771
4772         drm_dbg_kms(&dev_priv->drm, "Updating dbuf slices to 0x%x\n",
4773                     req_slices);
4774
4775         /*
4776          * Might be running this in parallel to gen9_dc_off_power_well_enable
4777          * being called from intel_dp_detect for instance,
4778          * which causes assertion triggered by race condition,
4779          * as gen9_assert_dbuf_enabled might preempt this when registers
4780          * were already updated, while dev_priv was not.
4781          */
4782         mutex_lock(&power_domains->lock);
4783
4784         for (slice = DBUF_S1; slice < num_slices; slice++)
4785                 gen9_dbuf_slice_set(dev_priv, slice, req_slices & BIT(slice));
4786
4787         dev_priv->dbuf.enabled_slices = req_slices;
4788
4789         mutex_unlock(&power_domains->lock);
4790 }
4791
4792 static void gen9_dbuf_enable(struct drm_i915_private *dev_priv)
4793 {
4794         dev_priv->dbuf.enabled_slices =
4795                 intel_enabled_dbuf_slices_mask(dev_priv);
4796
4797         /*
4798          * Just power up at least 1 slice, we will
4799          * figure out later which slices we have and what we need.
4800          */
4801         gen9_dbuf_slices_update(dev_priv, BIT(DBUF_S1) |
4802                                 dev_priv->dbuf.enabled_slices);
4803 }
4804
4805 static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
4806 {
4807         gen9_dbuf_slices_update(dev_priv, 0);
4808 }
4809
4810 static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
4811 {
4812         const int num_slices = INTEL_INFO(dev_priv)->num_supported_dbuf_slices;
4813         enum dbuf_slice slice;
4814
4815         for (slice = DBUF_S1; slice < (DBUF_S1 + num_slices); slice++)
4816                 intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
4817                              DBUF_TRACKER_STATE_SERVICE_MASK,
4818                              DBUF_TRACKER_STATE_SERVICE(8));
4819 }
4820
4821 static void icl_mbus_init(struct drm_i915_private *dev_priv)
4822 {
4823         unsigned long abox_regs = INTEL_INFO(dev_priv)->abox_mask;
4824         u32 mask, val, i;
4825
4826         mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK |
4827                 MBUS_ABOX_BT_CREDIT_POOL2_MASK |
4828                 MBUS_ABOX_B_CREDIT_MASK |
4829                 MBUS_ABOX_BW_CREDIT_MASK;
4830         val = MBUS_ABOX_BT_CREDIT_POOL1(16) |
4831                 MBUS_ABOX_BT_CREDIT_POOL2(16) |
4832                 MBUS_ABOX_B_CREDIT(1) |
4833                 MBUS_ABOX_BW_CREDIT(1);
4834
4835         /*
4836          * gen12 platforms that use abox1 and abox2 for pixel data reads still
4837          * expect us to program the abox_ctl0 register as well, even though
4838          * we don't have to program other instance-0 registers like BW_BUDDY.
4839          */
4840         if (IS_GEN(dev_priv, 12))
4841                 abox_regs |= BIT(0);
4842
4843         for_each_set_bit(i, &abox_regs, sizeof(abox_regs))
4844                 intel_de_rmw(dev_priv, MBUS_ABOX_CTL(i), mask, val);
4845 }
4846
4847 static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
4848 {
4849         u32 val = intel_de_read(dev_priv, LCPLL_CTL);
4850
4851         /*
4852          * The LCPLL register should be turned on by the BIOS. For now
4853          * let's just check its state and print errors in case
4854          * something is wrong.  Don't even try to turn it on.
4855          */
4856
4857         if (val & LCPLL_CD_SOURCE_FCLK)
4858                 drm_err(&dev_priv->drm, "CDCLK source is not LCPLL\n");
4859
4860         if (val & LCPLL_PLL_DISABLE)
4861                 drm_err(&dev_priv->drm, "LCPLL is disabled\n");
4862
4863         if ((val & LCPLL_REF_MASK) != LCPLL_REF_NON_SSC)
4864                 drm_err(&dev_priv->drm, "LCPLL not using non-SSC reference\n");
4865 }
4866
4867 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
4868 {
4869         struct drm_device *dev = &dev_priv->drm;
4870         struct intel_crtc *crtc;
4871
4872         for_each_intel_crtc(dev, crtc)
4873                 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
4874                                 pipe_name(crtc->pipe));
4875
4876         I915_STATE_WARN(intel_de_read(dev_priv, HSW_PWR_WELL_CTL2),
4877                         "Display power well on\n");
4878         I915_STATE_WARN(intel_de_read(dev_priv, SPLL_CTL) & SPLL_PLL_ENABLE,
4879                         "SPLL enabled\n");
4880         I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(0)) & WRPLL_PLL_ENABLE,
4881                         "WRPLL1 enabled\n");
4882         I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(1)) & WRPLL_PLL_ENABLE,
4883                         "WRPLL2 enabled\n");
4884         I915_STATE_WARN(intel_de_read(dev_priv, PP_STATUS(0)) & PP_ON,
4885                         "Panel power on\n");
4886         I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
4887                         "CPU PWM1 enabled\n");
4888         if (IS_HASWELL(dev_priv))
4889                 I915_STATE_WARN(intel_de_read(dev_priv, HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
4890                                 "CPU PWM2 enabled\n");
4891         I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
4892                         "PCH PWM1 enabled\n");
4893         I915_STATE_WARN(intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
4894                         "Utility pin enabled\n");
4895         I915_STATE_WARN(intel_de_read(dev_priv, PCH_GTC_CTL) & PCH_GTC_ENABLE,
4896                         "PCH GTC enabled\n");
4897
4898         /*
4899          * In theory we can still leave IRQs enabled, as long as only the HPD
4900          * interrupts remain enabled. We used to check for that, but since it's
4901          * gen-specific and since we only disable LCPLL after we fully disable
4902          * the interrupts, the check below should be enough.
4903          */
4904         I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
4905 }
4906
4907 static u32 hsw_read_dcomp(struct drm_i915_private *dev_priv)
4908 {
4909         if (IS_HASWELL(dev_priv))
4910                 return intel_de_read(dev_priv, D_COMP_HSW);
4911         else
4912                 return intel_de_read(dev_priv, D_COMP_BDW);
4913 }
4914
4915 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, u32 val)
4916 {
4917         if (IS_HASWELL(dev_priv)) {
4918                 if (sandybridge_pcode_write(dev_priv,
4919                                             GEN6_PCODE_WRITE_D_COMP, val))
4920                         drm_dbg_kms(&dev_priv->drm,
4921                                     "Failed to write to D_COMP\n");
4922         } else {
4923                 intel_de_write(dev_priv, D_COMP_BDW, val);
4924                 intel_de_posting_read(dev_priv, D_COMP_BDW);
4925         }
4926 }
4927
4928 /*
4929  * This function implements pieces of two sequences from BSpec:
4930  * - Sequence for display software to disable LCPLL
4931  * - Sequence for display software to allow package C8+
4932  * The steps implemented here are just the steps that actually touch the LCPLL
4933  * register. Callers should take care of disabling all the display engine
4934  * functions, doing the mode unset, fixing interrupts, etc.
4935  */
4936 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
4937                               bool switch_to_fclk, bool allow_power_down)
4938 {
4939         u32 val;
4940
4941         assert_can_disable_lcpll(dev_priv);
4942
4943         val = intel_de_read(dev_priv, LCPLL_CTL);
4944
4945         if (switch_to_fclk) {
4946                 val |= LCPLL_CD_SOURCE_FCLK;
4947                 intel_de_write(dev_priv, LCPLL_CTL, val);
4948
4949                 if (wait_for_us(intel_de_read(dev_priv, LCPLL_CTL) &
4950                                 LCPLL_CD_SOURCE_FCLK_DONE, 1))
4951                         drm_err(&dev_priv->drm, "Switching to FCLK failed\n");
4952
4953                 val = intel_de_read(dev_priv, LCPLL_CTL);
4954         }
4955
4956         val |= LCPLL_PLL_DISABLE;
4957         intel_de_write(dev_priv, LCPLL_CTL, val);
4958         intel_de_posting_read(dev_priv, LCPLL_CTL);
4959
4960         if (intel_de_wait_for_clear(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 1))
4961                 drm_err(&dev_priv->drm, "LCPLL still locked\n");
4962
4963         val = hsw_read_dcomp(dev_priv);
4964         val |= D_COMP_COMP_DISABLE;
4965         hsw_write_dcomp(dev_priv, val);
4966         ndelay(100);
4967
4968         if (wait_for((hsw_read_dcomp(dev_priv) &
4969                       D_COMP_RCOMP_IN_PROGRESS) == 0, 1))
4970                 drm_err(&dev_priv->drm, "D_COMP RCOMP still in progress\n");
4971
4972         if (allow_power_down) {
4973                 val = intel_de_read(dev_priv, LCPLL_CTL);
4974                 val |= LCPLL_POWER_DOWN_ALLOW;
4975                 intel_de_write(dev_priv, LCPLL_CTL, val);
4976                 intel_de_posting_read(dev_priv, LCPLL_CTL);
4977         }
4978 }
4979
4980 /*
4981  * Fully restores LCPLL, disallowing power down and switching back to LCPLL
4982  * source.
4983  */
4984 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
4985 {
4986         u32 val;
4987
4988         val = intel_de_read(dev_priv, LCPLL_CTL);
4989
4990         if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
4991                     LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
4992                 return;
4993
4994         /*
4995          * Make sure we're not on PC8 state before disabling PC8, otherwise
4996          * we'll hang the machine. To prevent PC8 state, just enable force_wake.
4997          */
4998         intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
4999
5000         if (val & LCPLL_POWER_DOWN_ALLOW) {
5001                 val &= ~LCPLL_POWER_DOWN_ALLOW;
5002                 intel_de_write(dev_priv, LCPLL_CTL, val);
5003                 intel_de_posting_read(dev_priv, LCPLL_CTL);
5004         }
5005
5006         val = hsw_read_dcomp(dev_priv);
5007         val |= D_COMP_COMP_FORCE;
5008         val &= ~D_COMP_COMP_DISABLE;
5009         hsw_write_dcomp(dev_priv, val);
5010
5011         val = intel_de_read(dev_priv, LCPLL_CTL);
5012         val &= ~LCPLL_PLL_DISABLE;
5013         intel_de_write(dev_priv, LCPLL_CTL, val);
5014
5015         if (intel_de_wait_for_set(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 5))
5016                 drm_err(&dev_priv->drm, "LCPLL not locked yet\n");
5017
5018         if (val & LCPLL_CD_SOURCE_FCLK) {
5019                 val = intel_de_read(dev_priv, LCPLL_CTL);
5020                 val &= ~LCPLL_CD_SOURCE_FCLK;
5021                 intel_de_write(dev_priv, LCPLL_CTL, val);
5022
5023                 if (wait_for_us((intel_de_read(dev_priv, LCPLL_CTL) &
5024                                  LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
5025                         drm_err(&dev_priv->drm,
5026                                 "Switching back to LCPLL failed\n");
5027         }
5028
5029         intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
5030
5031         intel_update_cdclk(dev_priv);
5032         intel_dump_cdclk_config(&dev_priv->cdclk.hw, "Current CDCLK");
5033 }
5034
5035 /*
5036  * Package states C8 and deeper are really deep PC states that can only be
5037  * reached when all the devices on the system allow it, so even if the graphics
5038  * device allows PC8+, it doesn't mean the system will actually get to these
5039  * states. Our driver only allows PC8+ when going into runtime PM.
5040  *
5041  * The requirements for PC8+ are that all the outputs are disabled, the power
5042  * well is disabled and most interrupts are disabled, and these are also
5043  * requirements for runtime PM. When these conditions are met, we manually do
5044  * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
5045  * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
5046  * hang the machine.
5047  *
5048  * When we really reach PC8 or deeper states (not just when we allow it) we lose
5049  * the state of some registers, so when we come back from PC8+ we need to
5050  * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
5051  * need to take care of the registers kept by RC6. Notice that this happens even
5052  * if we don't put the device in PCI D3 state (which is what currently happens
5053  * because of the runtime PM support).
5054  *
5055  * For more, read "Display Sequences for Package C8" on the hardware
5056  * documentation.
5057  */
5058 static void hsw_enable_pc8(struct drm_i915_private *dev_priv)
5059 {
5060         u32 val;
5061
5062         drm_dbg_kms(&dev_priv->drm, "Enabling package C8+\n");
5063
5064         if (HAS_PCH_LPT_LP(dev_priv)) {
5065                 val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
5066                 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
5067                 intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
5068         }
5069
5070         lpt_disable_clkout_dp(dev_priv);
5071         hsw_disable_lcpll(dev_priv, true, true);
5072 }
5073
5074 static void hsw_disable_pc8(struct drm_i915_private *dev_priv)
5075 {
5076         u32 val;
5077
5078         drm_dbg_kms(&dev_priv->drm, "Disabling package C8+\n");
5079
5080         hsw_restore_lcpll(dev_priv);
5081         intel_init_pch_refclk(dev_priv);
5082
5083         if (HAS_PCH_LPT_LP(dev_priv)) {
5084                 val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
5085                 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
5086                 intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
5087         }
5088 }
5089
5090 static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv,
5091                                       bool enable)
5092 {
5093         i915_reg_t reg;
5094         u32 reset_bits, val;
5095
5096         if (IS_IVYBRIDGE(dev_priv)) {
5097                 reg = GEN7_MSG_CTL;
5098                 reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK;
5099         } else {
5100                 reg = HSW_NDE_RSTWRN_OPT;
5101                 reset_bits = RESET_PCH_HANDSHAKE_ENABLE;
5102         }
5103
5104         val = intel_de_read(dev_priv, reg);
5105
5106         if (enable)
5107                 val |= reset_bits;
5108         else
5109                 val &= ~reset_bits;
5110
5111         intel_de_write(dev_priv, reg, val);
5112 }
5113
5114 static void skl_display_core_init(struct drm_i915_private *dev_priv,
5115                                   bool resume)
5116 {
5117         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5118         struct i915_power_well *well;
5119
5120         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
5121
5122         /* enable PCH reset handshake */
5123         intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
5124
5125         /* enable PG1 and Misc I/O */
5126         mutex_lock(&power_domains->lock);
5127
5128         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5129         intel_power_well_enable(dev_priv, well);
5130
5131         well = lookup_power_well(dev_priv, SKL_DISP_PW_MISC_IO);
5132         intel_power_well_enable(dev_priv, well);
5133
5134         mutex_unlock(&power_domains->lock);
5135
5136         intel_cdclk_init_hw(dev_priv);
5137
5138         gen9_dbuf_enable(dev_priv);
5139
5140         if (resume && dev_priv->csr.dmc_payload)
5141                 intel_csr_load_program(dev_priv);
5142 }
5143
5144 static void skl_display_core_uninit(struct drm_i915_private *dev_priv)
5145 {
5146         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5147         struct i915_power_well *well;
5148
5149         gen9_disable_dc_states(dev_priv);
5150
5151         gen9_dbuf_disable(dev_priv);
5152
5153         intel_cdclk_uninit_hw(dev_priv);
5154
5155         /* The spec doesn't call for removing the reset handshake flag */
5156         /* disable PG1 and Misc I/O */
5157
5158         mutex_lock(&power_domains->lock);
5159
5160         /*
5161          * BSpec says to keep the MISC IO power well enabled here, only
5162          * remove our request for power well 1.
5163          * Note that even though the driver's request is removed power well 1
5164          * may stay enabled after this due to DMC's own request on it.
5165          */
5166         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5167         intel_power_well_disable(dev_priv, well);
5168
5169         mutex_unlock(&power_domains->lock);
5170
5171         usleep_range(10, 30);           /* 10 us delay per Bspec */
5172 }
5173
5174 static void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume)
5175 {
5176         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5177         struct i915_power_well *well;
5178
5179         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
5180
5181         /*
5182          * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
5183          * or else the reset will hang because there is no PCH to respond.
5184          * Move the handshake programming to initialization sequence.
5185          * Previously was left up to BIOS.
5186          */
5187         intel_pch_reset_handshake(dev_priv, false);
5188
5189         /* Enable PG1 */
5190         mutex_lock(&power_domains->lock);
5191
5192         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5193         intel_power_well_enable(dev_priv, well);
5194
5195         mutex_unlock(&power_domains->lock);
5196
5197         intel_cdclk_init_hw(dev_priv);
5198
5199         gen9_dbuf_enable(dev_priv);
5200
5201         if (resume && dev_priv->csr.dmc_payload)
5202                 intel_csr_load_program(dev_priv);
5203 }
5204
5205 static void bxt_display_core_uninit(struct drm_i915_private *dev_priv)
5206 {
5207         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5208         struct i915_power_well *well;
5209
5210         gen9_disable_dc_states(dev_priv);
5211
5212         gen9_dbuf_disable(dev_priv);
5213
5214         intel_cdclk_uninit_hw(dev_priv);
5215
5216         /* The spec doesn't call for removing the reset handshake flag */
5217
5218         /*
5219          * Disable PW1 (PG1).
5220          * Note that even though the driver's request is removed power well 1
5221          * may stay enabled after this due to DMC's own request on it.
5222          */
5223         mutex_lock(&power_domains->lock);
5224
5225         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5226         intel_power_well_disable(dev_priv, well);
5227
5228         mutex_unlock(&power_domains->lock);
5229
5230         usleep_range(10, 30);           /* 10 us delay per Bspec */
5231 }
5232
5233 static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume)
5234 {
5235         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5236         struct i915_power_well *well;
5237
5238         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
5239
5240         /* 1. Enable PCH Reset Handshake */
5241         intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
5242
5243         /* 2-3. */
5244         intel_combo_phy_init(dev_priv);
5245
5246         /*
5247          * 4. Enable Power Well 1 (PG1).
5248          *    The AUX IO power wells will be enabled on demand.
5249          */
5250         mutex_lock(&power_domains->lock);
5251         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5252         intel_power_well_enable(dev_priv, well);
5253         mutex_unlock(&power_domains->lock);
5254
5255         /* 5. Enable CD clock */
5256         intel_cdclk_init_hw(dev_priv);
5257
5258         /* 6. Enable DBUF */
5259         gen9_dbuf_enable(dev_priv);
5260
5261         if (resume && dev_priv->csr.dmc_payload)
5262                 intel_csr_load_program(dev_priv);
5263 }
5264
5265 static void cnl_display_core_uninit(struct drm_i915_private *dev_priv)
5266 {
5267         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5268         struct i915_power_well *well;
5269
5270         gen9_disable_dc_states(dev_priv);
5271
5272         /* 1. Disable all display engine functions -> aready done */
5273
5274         /* 2. Disable DBUF */
5275         gen9_dbuf_disable(dev_priv);
5276
5277         /* 3. Disable CD clock */
5278         intel_cdclk_uninit_hw(dev_priv);
5279
5280         /*
5281          * 4. Disable Power Well 1 (PG1).
5282          *    The AUX IO power wells are toggled on demand, so they are already
5283          *    disabled at this point.
5284          */
5285         mutex_lock(&power_domains->lock);
5286         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5287         intel_power_well_disable(dev_priv, well);
5288         mutex_unlock(&power_domains->lock);
5289
5290         usleep_range(10, 30);           /* 10 us delay per Bspec */
5291
5292         /* 5. */
5293         intel_combo_phy_uninit(dev_priv);
5294 }
5295
5296 struct buddy_page_mask {
5297         u32 page_mask;
5298         u8 type;
5299         u8 num_channels;
5300 };
5301
5302 static const struct buddy_page_mask tgl_buddy_page_masks[] = {
5303         { .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0xF },
5304         { .num_channels = 1, .type = INTEL_DRAM_DDR5,   .page_mask = 0xF },
5305         { .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C },
5306         { .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1C },
5307         { .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1F },
5308         { .num_channels = 2, .type = INTEL_DRAM_DDR5,   .page_mask = 0x1E },
5309         { .num_channels = 4, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x38 },
5310         { .num_channels = 4, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x38 },
5311         {}
5312 };
5313
5314 static const struct buddy_page_mask wa_1409767108_buddy_page_masks[] = {
5315         { .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1 },
5316         { .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1 },
5317         { .num_channels = 1, .type = INTEL_DRAM_DDR5,   .page_mask = 0x1 },
5318         { .num_channels = 1, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1 },
5319         { .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x3 },
5320         { .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x3 },
5321         { .num_channels = 2, .type = INTEL_DRAM_DDR5,   .page_mask = 0x3 },
5322         { .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x3 },
5323         {}
5324 };
5325
5326 static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv)
5327 {
5328         enum intel_dram_type type = dev_priv->dram_info.type;
5329         u8 num_channels = dev_priv->dram_info.num_channels;
5330         const struct buddy_page_mask *table;
5331         unsigned long abox_mask = INTEL_INFO(dev_priv)->abox_mask;
5332         int config, i;
5333
5334         if (IS_ALDERLAKE_S(dev_priv) ||
5335             IS_DG1_REVID(dev_priv, DG1_REVID_A0, DG1_REVID_A0) ||
5336             IS_TGL_DISP_STEPPING(dev_priv, STEP_A0, STEP_B0))
5337                 /* Wa_1409767108:tgl,dg1,adl-s */
5338                 table = wa_1409767108_buddy_page_masks;
5339         else
5340                 table = tgl_buddy_page_masks;
5341
5342         for (config = 0; table[config].page_mask != 0; config++)
5343                 if (table[config].num_channels == num_channels &&
5344                     table[config].type == type)
5345                         break;
5346
5347         if (table[config].page_mask == 0) {
5348                 drm_dbg(&dev_priv->drm,
5349                         "Unknown memory configuration; disabling address buddy logic.\n");
5350                 for_each_set_bit(i, &abox_mask, sizeof(abox_mask))
5351                         intel_de_write(dev_priv, BW_BUDDY_CTL(i),
5352                                        BW_BUDDY_DISABLE);
5353         } else {
5354                 for_each_set_bit(i, &abox_mask, sizeof(abox_mask)) {
5355                         intel_de_write(dev_priv, BW_BUDDY_PAGE_MASK(i),
5356                                        table[config].page_mask);
5357
5358                         /* Wa_22010178259:tgl,rkl */
5359                         intel_de_rmw(dev_priv, BW_BUDDY_CTL(i),
5360                                      BW_BUDDY_TLB_REQ_TIMER_MASK,
5361                                      BW_BUDDY_TLB_REQ_TIMER(0x8));
5362                 }
5363         }
5364 }
5365
5366 static void icl_display_core_init(struct drm_i915_private *dev_priv,
5367                                   bool resume)
5368 {
5369         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5370         struct i915_power_well *well;
5371         u32 val;
5372
5373         gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
5374
5375         /* Wa_14011294188:ehl,jsl,tgl,rkl,adl-s */
5376         if (INTEL_PCH_TYPE(dev_priv) >= PCH_JSP &&
5377             INTEL_PCH_TYPE(dev_priv) < PCH_DG1)
5378                 intel_de_rmw(dev_priv, SOUTH_DSPCLK_GATE_D, 0,
5379                              PCH_DPMGUNIT_CLOCK_GATE_DISABLE);
5380
5381         /* 1. Enable PCH reset handshake. */
5382         intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
5383
5384         /* 2. Initialize all combo phys */
5385         intel_combo_phy_init(dev_priv);
5386
5387         /*
5388          * 3. Enable Power Well 1 (PG1).
5389          *    The AUX IO power wells will be enabled on demand.
5390          */
5391         mutex_lock(&power_domains->lock);
5392         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5393         intel_power_well_enable(dev_priv, well);
5394         mutex_unlock(&power_domains->lock);
5395
5396         /* 4. Enable CDCLK. */
5397         intel_cdclk_init_hw(dev_priv);
5398
5399         if (INTEL_GEN(dev_priv) >= 12)
5400                 gen12_dbuf_slices_config(dev_priv);
5401
5402         /* 5. Enable DBUF. */
5403         gen9_dbuf_enable(dev_priv);
5404
5405         /* 6. Setup MBUS. */
5406         icl_mbus_init(dev_priv);
5407
5408         /* 7. Program arbiter BW_BUDDY registers */
5409         if (INTEL_GEN(dev_priv) >= 12)
5410                 tgl_bw_buddy_init(dev_priv);
5411
5412         if (resume && dev_priv->csr.dmc_payload)
5413                 intel_csr_load_program(dev_priv);
5414
5415         /* Wa_14011508470 */
5416         if (IS_GEN(dev_priv, 12)) {
5417                 val = DCPR_CLEAR_MEMSTAT_DIS | DCPR_SEND_RESP_IMM |
5418                       DCPR_MASK_LPMODE | DCPR_MASK_MAXLATENCY_MEMUP_CLR;
5419                 intel_uncore_rmw(&dev_priv->uncore, GEN11_CHICKEN_DCPR_2, 0, val);
5420         }
5421 }
5422
5423 static void icl_display_core_uninit(struct drm_i915_private *dev_priv)
5424 {
5425         struct i915_power_domains *power_domains = &dev_priv->power_domains;
5426         struct i915_power_well *well;
5427
5428         gen9_disable_dc_states(dev_priv);
5429
5430         /* 1. Disable all display engine functions -> aready done */
5431
5432         /* 2. Disable DBUF */
5433         gen9_dbuf_disable(dev_priv);
5434
5435         /* 3. Disable CD clock */
5436         intel_cdclk_uninit_hw(dev_priv);
5437
5438         /*
5439          * 4. Disable Power Well 1 (PG1).
5440          *    The AUX IO power wells are toggled on demand, so they are already
5441          *    disabled at this point.
5442          */
5443         mutex_lock(&power_domains->lock);
5444         well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
5445         intel_power_well_disable(dev_priv, well);
5446         mutex_unlock(&power_domains->lock);
5447
5448         /* 5. */
5449         intel_combo_phy_uninit(dev_priv);
5450 }
5451
5452 static void chv_phy_control_init(struct drm_i915_private *dev_priv)
5453 {
5454         struct i915_power_well *cmn_bc =
5455                 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
5456         struct i915_power_well *cmn_d =
5457                 lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
5458
5459         /*
5460          * DISPLAY_PHY_CONTROL can get corrupted if read. As a
5461          * workaround never ever read DISPLAY_PHY_CONTROL, and
5462          * instead maintain a shadow copy ourselves. Use the actual
5463          * power well state and lane status to reconstruct the
5464          * expected initial value.
5465          */
5466         dev_priv->chv_phy_control =
5467                 PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY0) |
5468                 PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY1) |
5469                 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH0) |
5470                 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH1) |
5471                 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY1, DPIO_CH0);
5472
5473         /*
5474          * If all lanes are disabled we leave the override disabled
5475          * with all power down bits cleared to match the state we
5476          * would use after disabling the port. Otherwise enable the
5477          * override and set the lane powerdown bits accding to the
5478          * current lane status.
5479          */
5480         if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
5481                 u32 status = intel_de_read(dev_priv, DPLL(PIPE_A));
5482                 unsigned int mask;
5483
5484                 mask = status & DPLL_PORTB_READY_MASK;
5485                 if (mask == 0xf)
5486                         mask = 0x0;
5487                 else
5488                         dev_priv->chv_phy_control |=
5489                                 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0);
5490
5491                 dev_priv->chv_phy_control |=
5492                         PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH0);
5493
5494                 mask = (status & DPLL_PORTC_READY_MASK) >> 4;
5495                 if (mask == 0xf)
5496                         mask = 0x0;
5497                 else
5498                         dev_priv->chv_phy_control |=
5499                                 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1);
5500
5501                 dev_priv->chv_phy_control |=
5502                         PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH1);
5503
5504                 dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY0);
5505
5506                 dev_priv->chv_phy_assert[DPIO_PHY0] = false;
5507         } else {
5508                 dev_priv->chv_phy_assert[DPIO_PHY0] = true;
5509         }
5510
5511         if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
5512                 u32 status = intel_de_read(dev_priv, DPIO_PHY_STATUS);
5513                 unsigned int mask;
5514
5515                 mask = status & DPLL_PORTD_READY_MASK;
5516
5517                 if (mask == 0xf)
5518                         mask = 0x0;
5519                 else
5520                         dev_priv->chv_phy_control |=
5521                                 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0);
5522
5523                 dev_priv->chv_phy_control |=
5524                         PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY1, DPIO_CH0);
5525
5526                 dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY1);
5527
5528                 dev_priv->chv_phy_assert[DPIO_PHY1] = false;
5529         } else {
5530                 dev_priv->chv_phy_assert[DPIO_PHY1] = true;
5531         }
5532
5533         drm_dbg_kms(&dev_priv->drm, "Initial PHY_CONTROL=0x%08x\n",
5534                     dev_priv->chv_phy_control);
5535
5536         /* Defer application of initial phy_control to enabling the powerwell */
5537 }
5538
5539 static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv)
5540 {
5541         struct i915_power_well *cmn =
5542                 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
5543         struct i915_power_well *disp2d =
5544                 lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D);
5545
5546         /* If the display might be already active skip this */
5547         if (cmn->desc->ops->is_enabled(dev_priv, cmn) &&
5548             disp2d->desc->ops->is_enabled(dev_priv, disp2d) &&
5549             intel_de_read(dev_priv, DPIO_CTL) & DPIO_CMNRST)
5550                 return;
5551
5552         drm_dbg_kms(&dev_priv->drm, "toggling display PHY side reset\n");
5553
5554         /* cmnlane needs DPLL registers */
5555         disp2d->desc->ops->enable(dev_priv, disp2d);
5556
5557         /*
5558          * From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx:
5559          * Need to assert and de-assert PHY SB reset by gating the
5560          * common lane power, then un-gating it.
5561          * Simply ungating isn't enough to reset the PHY enough to get
5562          * ports and lanes running.
5563          */
5564         cmn->desc->ops->disable(dev_priv, cmn);
5565 }
5566
5567 static bool vlv_punit_is_power_gated(struct drm_i915_private *dev_priv, u32 reg0)
5568 {
5569         bool ret;
5570
5571         vlv_punit_get(dev_priv);
5572         ret = (vlv_punit_read(dev_priv, reg0) & SSPM0_SSC_MASK) == SSPM0_SSC_PWR_GATE;
5573         vlv_punit_put(dev_priv);
5574
5575         return ret;
5576 }
5577
5578 static void assert_ved_power_gated(struct drm_i915_private *dev_priv)
5579 {
5580         drm_WARN(&dev_priv->drm,
5581                  !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_VEDSSPM0),
5582                  "VED not power gated\n");
5583 }
5584
5585 static void assert_isp_power_gated(struct drm_i915_private *dev_priv)
5586 {
5587         static const struct pci_device_id isp_ids[] = {
5588                 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f38)},
5589                 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x22b8)},
5590                 {}
5591         };
5592
5593         drm_WARN(&dev_priv->drm, !pci_dev_present(isp_ids) &&
5594                  !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_ISPSSPM0),
5595                  "ISP not power gated\n");
5596 }
5597
5598 static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
5599
5600 /**
5601  * intel_power_domains_init_hw - initialize hardware power domain state
5602  * @i915: i915 device instance
5603  * @resume: Called from resume code paths or not
5604  *
5605  * This function initializes the hardware power domain state and enables all
5606  * power wells belonging to the INIT power domain. Power wells in other
5607  * domains (and not in the INIT domain) are referenced or disabled by
5608  * intel_modeset_readout_hw_state(). After that the reference count of each
5609  * power well must match its HW enabled state, see
5610  * intel_power_domains_verify_state().
5611  *
5612  * It will return with power domains disabled (to be enabled later by
5613  * intel_power_domains_enable()) and must be paired with
5614  * intel_power_domains_driver_remove().
5615  */
5616 void intel_power_domains_init_hw(struct drm_i915_private *i915, bool resume)
5617 {
5618         struct i915_power_domains *power_domains = &i915->power_domains;
5619
5620         power_domains->initializing = true;
5621
5622         if (INTEL_GEN(i915) >= 11) {
5623                 icl_display_core_init(i915, resume);
5624         } else if (IS_CANNONLAKE(i915)) {
5625                 cnl_display_core_init(i915, resume);
5626         } else if (IS_GEN9_BC(i915)) {
5627                 skl_display_core_init(i915, resume);
5628         } else if (IS_GEN9_LP(i915)) {
5629                 bxt_display_core_init(i915, resume);
5630         } else if (IS_CHERRYVIEW(i915)) {
5631                 mutex_lock(&power_domains->lock);
5632                 chv_phy_control_init(i915);
5633                 mutex_unlock(&power_domains->lock);
5634                 assert_isp_power_gated(i915);
5635         } else if (IS_VALLEYVIEW(i915)) {
5636                 mutex_lock(&power_domains->lock);
5637                 vlv_cmnlane_wa(i915);
5638                 mutex_unlock(&power_domains->lock);
5639                 assert_ved_power_gated(i915);
5640                 assert_isp_power_gated(i915);
5641         } else if (IS_BROADWELL(i915) || IS_HASWELL(i915)) {
5642                 hsw_assert_cdclk(i915);
5643                 intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
5644         } else if (IS_IVYBRIDGE(i915)) {
5645                 intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
5646         }
5647
5648         /*
5649          * Keep all power wells enabled for any dependent HW access during
5650          * initialization and to make sure we keep BIOS enabled display HW
5651          * resources powered until display HW readout is complete. We drop
5652          * this reference in intel_power_domains_enable().
5653          */
5654         drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
5655         power_domains->init_wakeref =
5656                 intel_display_power_get(i915, POWER_DOMAIN_INIT);
5657
5658         /* Disable power support if the user asked so. */
5659         if (!i915->params.disable_power_well) {
5660                 drm_WARN_ON(&i915->drm, power_domains->disable_wakeref);
5661                 i915->power_domains.disable_wakeref = intel_display_power_get(i915,
5662                                                                               POWER_DOMAIN_INIT);
5663         }
5664         intel_power_domains_sync_hw(i915);
5665
5666         power_domains->initializing = false;
5667 }
5668
5669 /**
5670  * intel_power_domains_driver_remove - deinitialize hw power domain state
5671  * @i915: i915 device instance
5672  *
5673  * De-initializes the display power domain HW state. It also ensures that the
5674  * device stays powered up so that the driver can be reloaded.
5675  *
5676  * It must be called with power domains already disabled (after a call to
5677  * intel_power_domains_disable()) and must be paired with
5678  * intel_power_domains_init_hw().
5679  */
5680 void intel_power_domains_driver_remove(struct drm_i915_private *i915)
5681 {
5682         intel_wakeref_t wakeref __maybe_unused =
5683                 fetch_and_zero(&i915->power_domains.init_wakeref);
5684
5685         /* Remove the refcount we took to keep power well support disabled. */
5686         if (!i915->params.disable_power_well)
5687                 intel_display_power_put(i915, POWER_DOMAIN_INIT,
5688                                         fetch_and_zero(&i915->power_domains.disable_wakeref));
5689
5690         intel_display_power_flush_work_sync(i915);
5691
5692         intel_power_domains_verify_state(i915);
5693
5694         /* Keep the power well enabled, but cancel its rpm wakeref. */
5695         intel_runtime_pm_put(&i915->runtime_pm, wakeref);
5696 }
5697
5698 /**
5699  * intel_power_domains_enable - enable toggling of display power wells
5700  * @i915: i915 device instance
5701  *
5702  * Enable the ondemand enabling/disabling of the display power wells. Note that
5703  * power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled
5704  * only at specific points of the display modeset sequence, thus they are not
5705  * affected by the intel_power_domains_enable()/disable() calls. The purpose
5706  * of these function is to keep the rest of power wells enabled until the end
5707  * of display HW readout (which will acquire the power references reflecting
5708  * the current HW state).
5709  */
5710 void intel_power_domains_enable(struct drm_i915_private *i915)
5711 {
5712         intel_wakeref_t wakeref __maybe_unused =
5713                 fetch_and_zero(&i915->power_domains.init_wakeref);
5714
5715         intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
5716         intel_power_domains_verify_state(i915);
5717 }
5718
5719 /**
5720  * intel_power_domains_disable - disable toggling of display power wells
5721  * @i915: i915 device instance
5722  *
5723  * Disable the ondemand enabling/disabling of the display power wells. See
5724  * intel_power_domains_enable() for which power wells this call controls.
5725  */
5726 void intel_power_domains_disable(struct drm_i915_private *i915)
5727 {
5728         struct i915_power_domains *power_domains = &i915->power_domains;
5729
5730         drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
5731         power_domains->init_wakeref =
5732                 intel_display_power_get(i915, POWER_DOMAIN_INIT);
5733
5734         intel_power_domains_verify_state(i915);
5735 }
5736
5737 /**
5738  * intel_power_domains_suspend - suspend power domain state
5739  * @i915: i915 device instance
5740  * @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
5741  *
5742  * This function prepares the hardware power domain state before entering
5743  * system suspend.
5744  *
5745  * It must be called with power domains already disabled (after a call to
5746  * intel_power_domains_disable()) and paired with intel_power_domains_resume().
5747  */
5748 void intel_power_domains_suspend(struct drm_i915_private *i915,
5749                                  enum i915_drm_suspend_mode suspend_mode)
5750 {
5751         struct i915_power_domains *power_domains = &i915->power_domains;
5752         intel_wakeref_t wakeref __maybe_unused =
5753                 fetch_and_zero(&power_domains->init_wakeref);
5754
5755         intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
5756
5757         /*
5758          * In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9
5759          * support don't manually deinit the power domains. This also means the
5760          * CSR/DMC firmware will stay active, it will power down any HW
5761          * resources as required and also enable deeper system power states
5762          * that would be blocked if the firmware was inactive.
5763          */
5764         if (!(i915->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
5765             suspend_mode == I915_DRM_SUSPEND_IDLE &&
5766             i915->csr.dmc_payload) {
5767                 intel_display_power_flush_work(i915);
5768                 intel_power_domains_verify_state(i915);
5769                 return;
5770         }
5771
5772         /*
5773          * Even if power well support was disabled we still want to disable
5774          * power wells if power domains must be deinitialized for suspend.
5775          */
5776         if (!i915->params.disable_power_well)
5777                 intel_display_power_put(i915, POWER_DOMAIN_INIT,
5778                                         fetch_and_zero(&i915->power_domains.disable_wakeref));
5779
5780         intel_display_power_flush_work(i915);
5781         intel_power_domains_verify_state(i915);
5782
5783         if (INTEL_GEN(i915) >= 11)
5784                 icl_display_core_uninit(i915);
5785         else if (IS_CANNONLAKE(i915))
5786                 cnl_display_core_uninit(i915);
5787         else if (IS_GEN9_BC(i915))
5788                 skl_display_core_uninit(i915);
5789         else if (IS_GEN9_LP(i915))
5790                 bxt_display_core_uninit(i915);
5791
5792         power_domains->display_core_suspended = true;
5793 }
5794
5795 /**
5796  * intel_power_domains_resume - resume power domain state
5797  * @i915: i915 device instance
5798  *
5799  * This function resume the hardware power domain state during system resume.
5800  *
5801  * It will return with power domain support disabled (to be enabled later by
5802  * intel_power_domains_enable()) and must be paired with
5803  * intel_power_domains_suspend().
5804  */
5805 void intel_power_domains_resume(struct drm_i915_private *i915)
5806 {
5807         struct i915_power_domains *power_domains = &i915->power_domains;
5808
5809         if (power_domains->display_core_suspended) {
5810                 intel_power_domains_init_hw(i915, true);
5811                 power_domains->display_core_suspended = false;
5812         } else {
5813                 drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
5814                 power_domains->init_wakeref =
5815                         intel_display_power_get(i915, POWER_DOMAIN_INIT);
5816         }
5817
5818         intel_power_domains_verify_state(i915);
5819 }
5820
5821 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
5822
5823 static void intel_power_domains_dump_info(struct drm_i915_private *i915)
5824 {
5825         struct i915_power_domains *power_domains = &i915->power_domains;
5826         struct i915_power_well *power_well;
5827
5828         for_each_power_well(i915, power_well) {
5829                 enum intel_display_power_domain domain;
5830
5831                 drm_dbg(&i915->drm, "%-25s %d\n",
5832                         power_well->desc->name, power_well->count);
5833
5834                 for_each_power_domain(domain, power_well->desc->domains)
5835                         drm_dbg(&i915->drm, "  %-23s %d\n",
5836                                 intel_display_power_domain_str(domain),
5837                                 power_domains->domain_use_count[domain]);
5838         }
5839 }
5840
5841 /**
5842  * intel_power_domains_verify_state - verify the HW/SW state for all power wells
5843  * @i915: i915 device instance
5844  *
5845  * Verify if the reference count of each power well matches its HW enabled
5846  * state and the total refcount of the domains it belongs to. This must be
5847  * called after modeset HW state sanitization, which is responsible for
5848  * acquiring reference counts for any power wells in use and disabling the
5849  * ones left on by BIOS but not required by any active output.
5850  */
5851 static void intel_power_domains_verify_state(struct drm_i915_private *i915)
5852 {
5853         struct i915_power_domains *power_domains = &i915->power_domains;
5854         struct i915_power_well *power_well;
5855         bool dump_domain_info;
5856
5857         mutex_lock(&power_domains->lock);
5858
5859         verify_async_put_domains_state(power_domains);
5860
5861         dump_domain_info = false;
5862         for_each_power_well(i915, power_well) {
5863                 enum intel_display_power_domain domain;
5864                 int domains_count;
5865                 bool enabled;
5866
5867                 enabled = power_well->desc->ops->is_enabled(i915, power_well);
5868                 if ((power_well->count || power_well->desc->always_on) !=
5869                     enabled)
5870                         drm_err(&i915->drm,
5871                                 "power well %s state mismatch (refcount %d/enabled %d)",
5872                                 power_well->desc->name,
5873                                 power_well->count, enabled);
5874
5875                 domains_count = 0;
5876                 for_each_power_domain(domain, power_well->desc->domains)
5877                         domains_count += power_domains->domain_use_count[domain];
5878
5879                 if (power_well->count != domains_count) {
5880                         drm_err(&i915->drm,
5881                                 "power well %s refcount/domain refcount mismatch "
5882                                 "(refcount %d/domains refcount %d)\n",
5883                                 power_well->desc->name, power_well->count,
5884                                 domains_count);
5885                         dump_domain_info = true;
5886                 }
5887         }
5888
5889         if (dump_domain_info) {
5890                 static bool dumped;
5891
5892                 if (!dumped) {
5893                         intel_power_domains_dump_info(i915);
5894                         dumped = true;
5895                 }
5896         }
5897
5898         mutex_unlock(&power_domains->lock);
5899 }
5900
5901 #else
5902
5903 static void intel_power_domains_verify_state(struct drm_i915_private *i915)
5904 {
5905 }
5906
5907 #endif
5908
5909 void intel_display_power_suspend_late(struct drm_i915_private *i915)
5910 {
5911         if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
5912                 bxt_enable_dc9(i915);
5913                 /* Tweaked Wa_14010685332:icp,jsp,mcc */
5914                 if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
5915                         intel_de_rmw(i915, SOUTH_CHICKEN1,
5916                                      SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
5917         } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
5918                 hsw_enable_pc8(i915);
5919         }
5920 }
5921
5922 void intel_display_power_resume_early(struct drm_i915_private *i915)
5923 {
5924         if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
5925                 gen9_sanitize_dc_state(i915);
5926                 bxt_disable_dc9(i915);
5927                 /* Tweaked Wa_14010685332:icp,jsp,mcc */
5928                 if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
5929                         intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
5930
5931         } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
5932                 hsw_disable_pc8(i915);
5933         }
5934 }
5935
5936 void intel_display_power_suspend(struct drm_i915_private *i915)
5937 {
5938         if (INTEL_GEN(i915) >= 11) {
5939                 icl_display_core_uninit(i915);
5940                 bxt_enable_dc9(i915);
5941         } else if (IS_GEN9_LP(i915)) {
5942                 bxt_display_core_uninit(i915);
5943                 bxt_enable_dc9(i915);
5944         } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
5945                 hsw_enable_pc8(i915);
5946         }
5947 }
5948
5949 void intel_display_power_resume(struct drm_i915_private *i915)
5950 {
5951         if (INTEL_GEN(i915) >= 11) {
5952                 bxt_disable_dc9(i915);
5953                 icl_display_core_init(i915, true);
5954                 if (i915->csr.dmc_payload) {
5955                         if (i915->csr.allowed_dc_mask &
5956                             DC_STATE_EN_UPTO_DC6)
5957                                 skl_enable_dc6(i915);
5958                         else if (i915->csr.allowed_dc_mask &
5959                                  DC_STATE_EN_UPTO_DC5)
5960                                 gen9_enable_dc5(i915);
5961                 }
5962         } else if (IS_GEN9_LP(i915)) {
5963                 bxt_disable_dc9(i915);
5964                 bxt_display_core_init(i915, true);
5965                 if (i915->csr.dmc_payload &&
5966                     (i915->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
5967                         gen9_enable_dc5(i915);
5968         } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
5969                 hsw_disable_pc8(i915);
5970         }
5971 }