1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2019 Intel Corporation 4 */ 5 6 #include "display/intel_crt.h" 7 #include "display/intel_dp.h" 8 9 #include "i915_drv.h" 10 #include "i915_irq.h" 11 #include "intel_cdclk.h" 12 #include "intel_combo_phy.h" 13 #include "intel_csr.h" 14 #include "intel_display_power.h" 15 #include "intel_display_types.h" 16 #include "intel_dpio_phy.h" 17 #include "intel_hotplug.h" 18 #include "intel_pm.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 default: 155 MISSING_CASE(domain); 156 return "?"; 157 } 158 } 159 160 static void intel_power_well_enable(struct drm_i915_private *dev_priv, 161 struct i915_power_well *power_well) 162 { 163 drm_dbg_kms(&dev_priv->drm, "enabling %s\n", power_well->desc->name); 164 power_well->desc->ops->enable(dev_priv, power_well); 165 power_well->hw_enabled = true; 166 } 167 168 static void intel_power_well_disable(struct drm_i915_private *dev_priv, 169 struct i915_power_well *power_well) 170 { 171 drm_dbg_kms(&dev_priv->drm, "disabling %s\n", power_well->desc->name); 172 power_well->hw_enabled = false; 173 power_well->desc->ops->disable(dev_priv, power_well); 174 } 175 176 static void intel_power_well_get(struct drm_i915_private *dev_priv, 177 struct i915_power_well *power_well) 178 { 179 if (!power_well->count++) 180 intel_power_well_enable(dev_priv, power_well); 181 } 182 183 static void intel_power_well_put(struct drm_i915_private *dev_priv, 184 struct i915_power_well *power_well) 185 { 186 drm_WARN(&dev_priv->drm, !power_well->count, 187 "Use count on power well %s is already zero", 188 power_well->desc->name); 189 190 if (!--power_well->count) 191 intel_power_well_disable(dev_priv, power_well); 192 } 193 194 /** 195 * __intel_display_power_is_enabled - unlocked check for a power domain 196 * @dev_priv: i915 device instance 197 * @domain: power domain to check 198 * 199 * This is the unlocked version of intel_display_power_is_enabled() and should 200 * only be used from error capture and recovery code where deadlocks are 201 * possible. 202 * 203 * Returns: 204 * True when the power domain is enabled, false otherwise. 205 */ 206 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv, 207 enum intel_display_power_domain domain) 208 { 209 struct i915_power_well *power_well; 210 bool is_enabled; 211 212 if (dev_priv->runtime_pm.suspended) 213 return false; 214 215 is_enabled = true; 216 217 for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain)) { 218 if (power_well->desc->always_on) 219 continue; 220 221 if (!power_well->hw_enabled) { 222 is_enabled = false; 223 break; 224 } 225 } 226 227 return is_enabled; 228 } 229 230 /** 231 * intel_display_power_is_enabled - check for a power domain 232 * @dev_priv: i915 device instance 233 * @domain: power domain to check 234 * 235 * This function can be used to check the hw power domain state. It is mostly 236 * used in hardware state readout functions. Everywhere else code should rely 237 * upon explicit power domain reference counting to ensure that the hardware 238 * block is powered up before accessing it. 239 * 240 * Callers must hold the relevant modesetting locks to ensure that concurrent 241 * threads can't disable the power well while the caller tries to read a few 242 * registers. 243 * 244 * Returns: 245 * True when the power domain is enabled, false otherwise. 246 */ 247 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv, 248 enum intel_display_power_domain domain) 249 { 250 struct i915_power_domains *power_domains; 251 bool ret; 252 253 power_domains = &dev_priv->power_domains; 254 255 mutex_lock(&power_domains->lock); 256 ret = __intel_display_power_is_enabled(dev_priv, domain); 257 mutex_unlock(&power_domains->lock); 258 259 return ret; 260 } 261 262 /* 263 * Starting with Haswell, we have a "Power Down Well" that can be turned off 264 * when not needed anymore. We have 4 registers that can request the power well 265 * to be enabled, and it will only be disabled if none of the registers is 266 * requesting it to be enabled. 267 */ 268 static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv, 269 u8 irq_pipe_mask, bool has_vga) 270 { 271 if (has_vga) 272 intel_vga_reset_io_mem(dev_priv); 273 274 if (irq_pipe_mask) 275 gen8_irq_power_well_post_enable(dev_priv, irq_pipe_mask); 276 } 277 278 static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv, 279 u8 irq_pipe_mask) 280 { 281 if (irq_pipe_mask) 282 gen8_irq_power_well_pre_disable(dev_priv, irq_pipe_mask); 283 } 284 285 static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv, 286 struct i915_power_well *power_well) 287 { 288 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 289 int pw_idx = power_well->desc->hsw.idx; 290 291 /* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */ 292 if (intel_de_wait_for_set(dev_priv, regs->driver, 293 HSW_PWR_WELL_CTL_STATE(pw_idx), 1)) { 294 drm_dbg_kms(&dev_priv->drm, "%s power well enable timeout\n", 295 power_well->desc->name); 296 297 /* An AUX timeout is expected if the TBT DP tunnel is down. */ 298 drm_WARN_ON(&dev_priv->drm, !power_well->desc->hsw.is_tc_tbt); 299 } 300 } 301 302 static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv, 303 const struct i915_power_well_regs *regs, 304 int pw_idx) 305 { 306 u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx); 307 u32 ret; 308 309 ret = intel_de_read(dev_priv, regs->bios) & req_mask ? 1 : 0; 310 ret |= intel_de_read(dev_priv, regs->driver) & req_mask ? 2 : 0; 311 if (regs->kvmr.reg) 312 ret |= intel_de_read(dev_priv, regs->kvmr) & req_mask ? 4 : 0; 313 ret |= intel_de_read(dev_priv, regs->debug) & req_mask ? 8 : 0; 314 315 return ret; 316 } 317 318 static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv, 319 struct i915_power_well *power_well) 320 { 321 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 322 int pw_idx = power_well->desc->hsw.idx; 323 bool disabled; 324 u32 reqs; 325 326 /* 327 * Bspec doesn't require waiting for PWs to get disabled, but still do 328 * this for paranoia. The known cases where a PW will be forced on: 329 * - a KVMR request on any power well via the KVMR request register 330 * - a DMC request on PW1 and MISC_IO power wells via the BIOS and 331 * DEBUG request registers 332 * Skip the wait in case any of the request bits are set and print a 333 * diagnostic message. 334 */ 335 wait_for((disabled = !(intel_de_read(dev_priv, regs->driver) & 336 HSW_PWR_WELL_CTL_STATE(pw_idx))) || 337 (reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1); 338 if (disabled) 339 return; 340 341 drm_dbg_kms(&dev_priv->drm, 342 "%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n", 343 power_well->desc->name, 344 !!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8)); 345 } 346 347 static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv, 348 enum skl_power_gate pg) 349 { 350 /* Timeout 5us for PG#0, for other PGs 1us */ 351 drm_WARN_ON(&dev_priv->drm, 352 intel_de_wait_for_set(dev_priv, SKL_FUSE_STATUS, 353 SKL_FUSE_PG_DIST_STATUS(pg), 1)); 354 } 355 356 static void hsw_power_well_enable(struct drm_i915_private *dev_priv, 357 struct i915_power_well *power_well) 358 { 359 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 360 int pw_idx = power_well->desc->hsw.idx; 361 bool wait_fuses = power_well->desc->hsw.has_fuses; 362 enum skl_power_gate uninitialized_var(pg); 363 u32 val; 364 365 if (wait_fuses) { 366 pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) : 367 SKL_PW_CTL_IDX_TO_PG(pw_idx); 368 /* 369 * For PW1 we have to wait both for the PW0/PG0 fuse state 370 * before enabling the power well and PW1/PG1's own fuse 371 * state after the enabling. For all other power wells with 372 * fuses we only have to wait for that PW/PG's fuse state 373 * after the enabling. 374 */ 375 if (pg == SKL_PG1) 376 gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0); 377 } 378 379 val = intel_de_read(dev_priv, regs->driver); 380 intel_de_write(dev_priv, regs->driver, 381 val | HSW_PWR_WELL_CTL_REQ(pw_idx)); 382 hsw_wait_for_power_well_enable(dev_priv, power_well); 383 384 /* Display WA #1178: cnl */ 385 if (IS_CANNONLAKE(dev_priv) && 386 pw_idx >= GLK_PW_CTL_IDX_AUX_B && 387 pw_idx <= CNL_PW_CTL_IDX_AUX_F) { 388 val = intel_de_read(dev_priv, CNL_AUX_ANAOVRD1(pw_idx)); 389 val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS; 390 intel_de_write(dev_priv, CNL_AUX_ANAOVRD1(pw_idx), val); 391 } 392 393 if (wait_fuses) 394 gen9_wait_for_power_well_fuses(dev_priv, pg); 395 396 hsw_power_well_post_enable(dev_priv, 397 power_well->desc->hsw.irq_pipe_mask, 398 power_well->desc->hsw.has_vga); 399 } 400 401 static void hsw_power_well_disable(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 hsw_power_well_pre_disable(dev_priv, 409 power_well->desc->hsw.irq_pipe_mask); 410 411 val = intel_de_read(dev_priv, regs->driver); 412 intel_de_write(dev_priv, regs->driver, 413 val & ~HSW_PWR_WELL_CTL_REQ(pw_idx)); 414 hsw_wait_for_power_well_disable(dev_priv, power_well); 415 } 416 417 #define ICL_AUX_PW_TO_PHY(pw_idx) ((pw_idx) - ICL_PW_CTL_IDX_AUX_A) 418 419 static void 420 icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv, 421 struct i915_power_well *power_well) 422 { 423 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 424 int pw_idx = power_well->desc->hsw.idx; 425 enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx); 426 u32 val; 427 428 drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv)); 429 430 val = intel_de_read(dev_priv, regs->driver); 431 intel_de_write(dev_priv, regs->driver, 432 val | HSW_PWR_WELL_CTL_REQ(pw_idx)); 433 434 if (INTEL_GEN(dev_priv) < 12) { 435 val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy)); 436 intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy), 437 val | ICL_LANE_ENABLE_AUX); 438 } 439 440 hsw_wait_for_power_well_enable(dev_priv, power_well); 441 442 /* Display WA #1178: icl */ 443 if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B && 444 !intel_bios_is_port_edp(dev_priv, (enum port)phy)) { 445 val = intel_de_read(dev_priv, ICL_AUX_ANAOVRD1(pw_idx)); 446 val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS; 447 intel_de_write(dev_priv, ICL_AUX_ANAOVRD1(pw_idx), val); 448 } 449 } 450 451 static void 452 icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv, 453 struct i915_power_well *power_well) 454 { 455 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 456 int pw_idx = power_well->desc->hsw.idx; 457 enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx); 458 u32 val; 459 460 drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv)); 461 462 val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy)); 463 intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy), 464 val & ~ICL_LANE_ENABLE_AUX); 465 466 val = intel_de_read(dev_priv, regs->driver); 467 intel_de_write(dev_priv, regs->driver, 468 val & ~HSW_PWR_WELL_CTL_REQ(pw_idx)); 469 470 hsw_wait_for_power_well_disable(dev_priv, power_well); 471 } 472 473 #define ICL_AUX_PW_TO_CH(pw_idx) \ 474 ((pw_idx) - ICL_PW_CTL_IDX_AUX_A + AUX_CH_A) 475 476 #define ICL_TBT_AUX_PW_TO_CH(pw_idx) \ 477 ((pw_idx) - ICL_PW_CTL_IDX_AUX_TBT1 + AUX_CH_C) 478 479 static enum aux_ch icl_tc_phy_aux_ch(struct drm_i915_private *dev_priv, 480 struct i915_power_well *power_well) 481 { 482 int pw_idx = power_well->desc->hsw.idx; 483 484 return power_well->desc->hsw.is_tc_tbt ? ICL_TBT_AUX_PW_TO_CH(pw_idx) : 485 ICL_AUX_PW_TO_CH(pw_idx); 486 } 487 488 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 489 490 static u64 async_put_domains_mask(struct i915_power_domains *power_domains); 491 492 static int power_well_async_ref_count(struct drm_i915_private *dev_priv, 493 struct i915_power_well *power_well) 494 { 495 int refs = hweight64(power_well->desc->domains & 496 async_put_domains_mask(&dev_priv->power_domains)); 497 498 drm_WARN_ON(&dev_priv->drm, refs > power_well->count); 499 500 return refs; 501 } 502 503 static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv, 504 struct i915_power_well *power_well) 505 { 506 enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well); 507 struct intel_digital_port *dig_port = NULL; 508 struct intel_encoder *encoder; 509 510 /* Bypass the check if all references are released asynchronously */ 511 if (power_well_async_ref_count(dev_priv, power_well) == 512 power_well->count) 513 return; 514 515 aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well); 516 517 for_each_intel_encoder(&dev_priv->drm, encoder) { 518 enum phy phy = intel_port_to_phy(dev_priv, encoder->port); 519 520 if (!intel_phy_is_tc(dev_priv, phy)) 521 continue; 522 523 /* We'll check the MST primary port */ 524 if (encoder->type == INTEL_OUTPUT_DP_MST) 525 continue; 526 527 dig_port = enc_to_dig_port(encoder); 528 if (drm_WARN_ON(&dev_priv->drm, !dig_port)) 529 continue; 530 531 if (dig_port->aux_ch != aux_ch) { 532 dig_port = NULL; 533 continue; 534 } 535 536 break; 537 } 538 539 if (drm_WARN_ON(&dev_priv->drm, !dig_port)) 540 return; 541 542 drm_WARN_ON(&dev_priv->drm, !intel_tc_port_ref_held(dig_port)); 543 } 544 545 #else 546 547 static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv, 548 struct i915_power_well *power_well) 549 { 550 } 551 552 #endif 553 554 #define TGL_AUX_PW_TO_TC_PORT(pw_idx) ((pw_idx) - TGL_PW_CTL_IDX_AUX_TC1) 555 556 static void 557 icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv, 558 struct i915_power_well *power_well) 559 { 560 enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well); 561 u32 val; 562 563 icl_tc_port_assert_ref_held(dev_priv, power_well); 564 565 val = intel_de_read(dev_priv, DP_AUX_CH_CTL(aux_ch)); 566 val &= ~DP_AUX_CH_CTL_TBT_IO; 567 if (power_well->desc->hsw.is_tc_tbt) 568 val |= DP_AUX_CH_CTL_TBT_IO; 569 intel_de_write(dev_priv, DP_AUX_CH_CTL(aux_ch), val); 570 571 hsw_power_well_enable(dev_priv, power_well); 572 573 if (INTEL_GEN(dev_priv) >= 12 && !power_well->desc->hsw.is_tc_tbt) { 574 enum tc_port tc_port; 575 576 tc_port = TGL_AUX_PW_TO_TC_PORT(power_well->desc->hsw.idx); 577 intel_de_write(dev_priv, HIP_INDEX_REG(tc_port), 578 HIP_INDEX_VAL(tc_port, 0x2)); 579 580 if (intel_de_wait_for_set(dev_priv, DKL_CMN_UC_DW_27(tc_port), 581 DKL_CMN_UC_DW27_UC_HEALTH, 1)) 582 drm_warn(&dev_priv->drm, 583 "Timeout waiting TC uC health\n"); 584 } 585 } 586 587 static void 588 icl_tc_phy_aux_power_well_disable(struct drm_i915_private *dev_priv, 589 struct i915_power_well *power_well) 590 { 591 icl_tc_port_assert_ref_held(dev_priv, power_well); 592 593 hsw_power_well_disable(dev_priv, power_well); 594 } 595 596 /* 597 * We should only use the power well if we explicitly asked the hardware to 598 * enable it, so check if it's enabled and also check if we've requested it to 599 * be enabled. 600 */ 601 static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv, 602 struct i915_power_well *power_well) 603 { 604 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 605 enum i915_power_well_id id = power_well->desc->id; 606 int pw_idx = power_well->desc->hsw.idx; 607 u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) | 608 HSW_PWR_WELL_CTL_STATE(pw_idx); 609 u32 val; 610 611 val = intel_de_read(dev_priv, regs->driver); 612 613 /* 614 * On GEN9 big core due to a DMC bug the driver's request bits for PW1 615 * and the MISC_IO PW will be not restored, so check instead for the 616 * BIOS's own request bits, which are forced-on for these power wells 617 * when exiting DC5/6. 618 */ 619 if (IS_GEN(dev_priv, 9) && !IS_GEN9_LP(dev_priv) && 620 (id == SKL_DISP_PW_1 || id == SKL_DISP_PW_MISC_IO)) 621 val |= intel_de_read(dev_priv, regs->bios); 622 623 return (val & mask) == mask; 624 } 625 626 static void assert_can_enable_dc9(struct drm_i915_private *dev_priv) 627 { 628 drm_WARN_ONCE(&dev_priv->drm, 629 (intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC9), 630 "DC9 already programmed to be enabled.\n"); 631 drm_WARN_ONCE(&dev_priv->drm, 632 intel_de_read(dev_priv, DC_STATE_EN) & 633 DC_STATE_EN_UPTO_DC5, 634 "DC5 still not disabled to enable DC9.\n"); 635 drm_WARN_ONCE(&dev_priv->drm, 636 intel_de_read(dev_priv, HSW_PWR_WELL_CTL2) & 637 HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2), 638 "Power well 2 on.\n"); 639 drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv), 640 "Interrupts not disabled yet.\n"); 641 642 /* 643 * TODO: check for the following to verify the conditions to enter DC9 644 * state are satisfied: 645 * 1] Check relevant display engine registers to verify if mode set 646 * disable sequence was followed. 647 * 2] Check if display uninitialize sequence is initialized. 648 */ 649 } 650 651 static void assert_can_disable_dc9(struct drm_i915_private *dev_priv) 652 { 653 drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv), 654 "Interrupts not disabled yet.\n"); 655 drm_WARN_ONCE(&dev_priv->drm, 656 intel_de_read(dev_priv, DC_STATE_EN) & 657 DC_STATE_EN_UPTO_DC5, 658 "DC5 still not disabled.\n"); 659 660 /* 661 * TODO: check for the following to verify DC9 state was indeed 662 * entered before programming to disable it: 663 * 1] Check relevant display engine registers to verify if mode 664 * set disable sequence was followed. 665 * 2] Check if display uninitialize sequence is initialized. 666 */ 667 } 668 669 static void gen9_write_dc_state(struct drm_i915_private *dev_priv, 670 u32 state) 671 { 672 int rewrites = 0; 673 int rereads = 0; 674 u32 v; 675 676 intel_de_write(dev_priv, DC_STATE_EN, state); 677 678 /* It has been observed that disabling the dc6 state sometimes 679 * doesn't stick and dmc keeps returning old value. Make sure 680 * the write really sticks enough times and also force rewrite until 681 * we are confident that state is exactly what we want. 682 */ 683 do { 684 v = intel_de_read(dev_priv, DC_STATE_EN); 685 686 if (v != state) { 687 intel_de_write(dev_priv, DC_STATE_EN, state); 688 rewrites++; 689 rereads = 0; 690 } else if (rereads++ > 5) { 691 break; 692 } 693 694 } while (rewrites < 100); 695 696 if (v != state) 697 drm_err(&dev_priv->drm, 698 "Writing dc state to 0x%x failed, now 0x%x\n", 699 state, v); 700 701 /* Most of the times we need one retry, avoid spam */ 702 if (rewrites > 1) 703 drm_dbg_kms(&dev_priv->drm, 704 "Rewrote dc state to 0x%x %d times\n", 705 state, rewrites); 706 } 707 708 static u32 gen9_dc_mask(struct drm_i915_private *dev_priv) 709 { 710 u32 mask; 711 712 mask = DC_STATE_EN_UPTO_DC5; 713 714 if (INTEL_GEN(dev_priv) >= 12) 715 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6 716 | DC_STATE_EN_DC9; 717 else if (IS_GEN(dev_priv, 11)) 718 mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9; 719 else if (IS_GEN9_LP(dev_priv)) 720 mask |= DC_STATE_EN_DC9; 721 else 722 mask |= DC_STATE_EN_UPTO_DC6; 723 724 return mask; 725 } 726 727 static void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv) 728 { 729 u32 val; 730 731 val = intel_de_read(dev_priv, DC_STATE_EN) & gen9_dc_mask(dev_priv); 732 733 drm_dbg_kms(&dev_priv->drm, 734 "Resetting DC state tracking from %02x to %02x\n", 735 dev_priv->csr.dc_state, val); 736 dev_priv->csr.dc_state = val; 737 } 738 739 /** 740 * gen9_set_dc_state - set target display C power state 741 * @dev_priv: i915 device instance 742 * @state: target DC power state 743 * - DC_STATE_DISABLE 744 * - DC_STATE_EN_UPTO_DC5 745 * - DC_STATE_EN_UPTO_DC6 746 * - DC_STATE_EN_DC9 747 * 748 * Signal to DMC firmware/HW the target DC power state passed in @state. 749 * DMC/HW can turn off individual display clocks and power rails when entering 750 * a deeper DC power state (higher in number) and turns these back when exiting 751 * that state to a shallower power state (lower in number). The HW will decide 752 * when to actually enter a given state on an on-demand basis, for instance 753 * depending on the active state of display pipes. The state of display 754 * registers backed by affected power rails are saved/restored as needed. 755 * 756 * Based on the above enabling a deeper DC power state is asynchronous wrt. 757 * enabling it. Disabling a deeper power state is synchronous: for instance 758 * setting %DC_STATE_DISABLE won't complete until all HW resources are turned 759 * back on and register state is restored. This is guaranteed by the MMIO write 760 * to DC_STATE_EN blocking until the state is restored. 761 */ 762 static void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state) 763 { 764 u32 val; 765 u32 mask; 766 767 if (drm_WARN_ON_ONCE(&dev_priv->drm, 768 state & ~dev_priv->csr.allowed_dc_mask)) 769 state &= dev_priv->csr.allowed_dc_mask; 770 771 val = intel_de_read(dev_priv, DC_STATE_EN); 772 mask = gen9_dc_mask(dev_priv); 773 drm_dbg_kms(&dev_priv->drm, "Setting DC state from %02x to %02x\n", 774 val & mask, state); 775 776 /* Check if DMC is ignoring our DC state requests */ 777 if ((val & mask) != dev_priv->csr.dc_state) 778 drm_err(&dev_priv->drm, "DC state mismatch (0x%x -> 0x%x)\n", 779 dev_priv->csr.dc_state, val & mask); 780 781 val &= ~mask; 782 val |= state; 783 784 gen9_write_dc_state(dev_priv, val); 785 786 dev_priv->csr.dc_state = val & mask; 787 } 788 789 static u32 790 sanitize_target_dc_state(struct drm_i915_private *dev_priv, 791 u32 target_dc_state) 792 { 793 u32 states[] = { 794 DC_STATE_EN_UPTO_DC6, 795 DC_STATE_EN_UPTO_DC5, 796 DC_STATE_EN_DC3CO, 797 DC_STATE_DISABLE, 798 }; 799 int i; 800 801 for (i = 0; i < ARRAY_SIZE(states) - 1; i++) { 802 if (target_dc_state != states[i]) 803 continue; 804 805 if (dev_priv->csr.allowed_dc_mask & target_dc_state) 806 break; 807 808 target_dc_state = states[i + 1]; 809 } 810 811 return target_dc_state; 812 } 813 814 static void tgl_enable_dc3co(struct drm_i915_private *dev_priv) 815 { 816 drm_dbg_kms(&dev_priv->drm, "Enabling DC3CO\n"); 817 gen9_set_dc_state(dev_priv, DC_STATE_EN_DC3CO); 818 } 819 820 static void tgl_disable_dc3co(struct drm_i915_private *dev_priv) 821 { 822 u32 val; 823 824 drm_dbg_kms(&dev_priv->drm, "Disabling DC3CO\n"); 825 val = intel_de_read(dev_priv, DC_STATE_EN); 826 val &= ~DC_STATE_DC3CO_STATUS; 827 intel_de_write(dev_priv, DC_STATE_EN, val); 828 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 829 /* 830 * Delay of 200us DC3CO Exit time B.Spec 49196 831 */ 832 usleep_range(200, 210); 833 } 834 835 static void bxt_enable_dc9(struct drm_i915_private *dev_priv) 836 { 837 assert_can_enable_dc9(dev_priv); 838 839 drm_dbg_kms(&dev_priv->drm, "Enabling DC9\n"); 840 /* 841 * Power sequencer reset is not needed on 842 * platforms with South Display Engine on PCH, 843 * because PPS registers are always on. 844 */ 845 if (!HAS_PCH_SPLIT(dev_priv)) 846 intel_power_sequencer_reset(dev_priv); 847 gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9); 848 } 849 850 static void bxt_disable_dc9(struct drm_i915_private *dev_priv) 851 { 852 assert_can_disable_dc9(dev_priv); 853 854 drm_dbg_kms(&dev_priv->drm, "Disabling DC9\n"); 855 856 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 857 858 intel_pps_unlock_regs_wa(dev_priv); 859 } 860 861 static void assert_csr_loaded(struct drm_i915_private *dev_priv) 862 { 863 drm_WARN_ONCE(&dev_priv->drm, 864 !intel_de_read(dev_priv, CSR_PROGRAM(0)), 865 "CSR program storage start is NULL\n"); 866 drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, CSR_SSP_BASE), 867 "CSR SSP Base Not fine\n"); 868 drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, CSR_HTP_SKL), 869 "CSR HTP Not fine\n"); 870 } 871 872 static struct i915_power_well * 873 lookup_power_well(struct drm_i915_private *dev_priv, 874 enum i915_power_well_id power_well_id) 875 { 876 struct i915_power_well *power_well; 877 878 for_each_power_well(dev_priv, power_well) 879 if (power_well->desc->id == power_well_id) 880 return power_well; 881 882 /* 883 * It's not feasible to add error checking code to the callers since 884 * this condition really shouldn't happen and it doesn't even make sense 885 * to abort things like display initialization sequences. Just return 886 * the first power well and hope the WARN gets reported so we can fix 887 * our driver. 888 */ 889 drm_WARN(&dev_priv->drm, 1, 890 "Power well %d not defined for this platform\n", 891 power_well_id); 892 return &dev_priv->power_domains.power_wells[0]; 893 } 894 895 /** 896 * intel_display_power_set_target_dc_state - Set target dc state. 897 * @dev_priv: i915 device 898 * @state: state which needs to be set as target_dc_state. 899 * 900 * This function set the "DC off" power well target_dc_state, 901 * based upon this target_dc_stste, "DC off" power well will 902 * enable desired DC state. 903 */ 904 void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv, 905 u32 state) 906 { 907 struct i915_power_well *power_well; 908 bool dc_off_enabled; 909 struct i915_power_domains *power_domains = &dev_priv->power_domains; 910 911 mutex_lock(&power_domains->lock); 912 power_well = lookup_power_well(dev_priv, SKL_DISP_DC_OFF); 913 914 if (drm_WARN_ON(&dev_priv->drm, !power_well)) 915 goto unlock; 916 917 state = sanitize_target_dc_state(dev_priv, state); 918 919 if (state == dev_priv->csr.target_dc_state) 920 goto unlock; 921 922 dc_off_enabled = power_well->desc->ops->is_enabled(dev_priv, 923 power_well); 924 /* 925 * If DC off power well is disabled, need to enable and disable the 926 * DC off power well to effect target DC state. 927 */ 928 if (!dc_off_enabled) 929 power_well->desc->ops->enable(dev_priv, power_well); 930 931 dev_priv->csr.target_dc_state = state; 932 933 if (!dc_off_enabled) 934 power_well->desc->ops->disable(dev_priv, power_well); 935 936 unlock: 937 mutex_unlock(&power_domains->lock); 938 } 939 940 static void assert_can_enable_dc5(struct drm_i915_private *dev_priv) 941 { 942 enum i915_power_well_id high_pg; 943 944 /* Power wells at this level and above must be disabled for DC5 entry */ 945 if (INTEL_GEN(dev_priv) >= 12) 946 high_pg = TGL_DISP_PW_3; 947 else 948 high_pg = SKL_DISP_PW_2; 949 950 drm_WARN_ONCE(&dev_priv->drm, 951 intel_display_power_well_is_enabled(dev_priv, high_pg), 952 "Power wells above platform's DC5 limit still enabled.\n"); 953 954 drm_WARN_ONCE(&dev_priv->drm, 955 (intel_de_read(dev_priv, DC_STATE_EN) & 956 DC_STATE_EN_UPTO_DC5), 957 "DC5 already programmed to be enabled.\n"); 958 assert_rpm_wakelock_held(&dev_priv->runtime_pm); 959 960 assert_csr_loaded(dev_priv); 961 } 962 963 static void gen9_enable_dc5(struct drm_i915_private *dev_priv) 964 { 965 assert_can_enable_dc5(dev_priv); 966 967 drm_dbg_kms(&dev_priv->drm, "Enabling DC5\n"); 968 969 /* Wa Display #1183: skl,kbl,cfl */ 970 if (IS_GEN9_BC(dev_priv)) 971 intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1, 972 intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT); 973 974 gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5); 975 } 976 977 static void assert_can_enable_dc6(struct drm_i915_private *dev_priv) 978 { 979 drm_WARN_ONCE(&dev_priv->drm, 980 intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE, 981 "Backlight is not disabled.\n"); 982 drm_WARN_ONCE(&dev_priv->drm, 983 (intel_de_read(dev_priv, DC_STATE_EN) & 984 DC_STATE_EN_UPTO_DC6), 985 "DC6 already programmed to be enabled.\n"); 986 987 assert_csr_loaded(dev_priv); 988 } 989 990 static void skl_enable_dc6(struct drm_i915_private *dev_priv) 991 { 992 assert_can_enable_dc6(dev_priv); 993 994 drm_dbg_kms(&dev_priv->drm, "Enabling DC6\n"); 995 996 /* Wa Display #1183: skl,kbl,cfl */ 997 if (IS_GEN9_BC(dev_priv)) 998 intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1, 999 intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT); 1000 1001 gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6); 1002 } 1003 1004 static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv, 1005 struct i915_power_well *power_well) 1006 { 1007 const struct i915_power_well_regs *regs = power_well->desc->hsw.regs; 1008 int pw_idx = power_well->desc->hsw.idx; 1009 u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx); 1010 u32 bios_req = intel_de_read(dev_priv, regs->bios); 1011 1012 /* Take over the request bit if set by BIOS. */ 1013 if (bios_req & mask) { 1014 u32 drv_req = intel_de_read(dev_priv, regs->driver); 1015 1016 if (!(drv_req & mask)) 1017 intel_de_write(dev_priv, regs->driver, drv_req | mask); 1018 intel_de_write(dev_priv, regs->bios, bios_req & ~mask); 1019 } 1020 } 1021 1022 static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv, 1023 struct i915_power_well *power_well) 1024 { 1025 bxt_ddi_phy_init(dev_priv, power_well->desc->bxt.phy); 1026 } 1027 1028 static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv, 1029 struct i915_power_well *power_well) 1030 { 1031 bxt_ddi_phy_uninit(dev_priv, power_well->desc->bxt.phy); 1032 } 1033 1034 static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv, 1035 struct i915_power_well *power_well) 1036 { 1037 return bxt_ddi_phy_is_enabled(dev_priv, power_well->desc->bxt.phy); 1038 } 1039 1040 static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv) 1041 { 1042 struct i915_power_well *power_well; 1043 1044 power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A); 1045 if (power_well->count > 0) 1046 bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy); 1047 1048 power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC); 1049 if (power_well->count > 0) 1050 bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy); 1051 1052 if (IS_GEMINILAKE(dev_priv)) { 1053 power_well = lookup_power_well(dev_priv, 1054 GLK_DISP_PW_DPIO_CMN_C); 1055 if (power_well->count > 0) 1056 bxt_ddi_phy_verify_state(dev_priv, 1057 power_well->desc->bxt.phy); 1058 } 1059 } 1060 1061 static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv, 1062 struct i915_power_well *power_well) 1063 { 1064 return ((intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC3CO) == 0 && 1065 (intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0); 1066 } 1067 1068 static void gen9_assert_dbuf_enabled(struct drm_i915_private *dev_priv) 1069 { 1070 u8 hw_enabled_dbuf_slices = intel_enabled_dbuf_slices_mask(dev_priv); 1071 u8 enabled_dbuf_slices = dev_priv->enabled_dbuf_slices_mask; 1072 1073 drm_WARN(&dev_priv->drm, 1074 hw_enabled_dbuf_slices != enabled_dbuf_slices, 1075 "Unexpected DBuf power power state (0x%08x, expected 0x%08x)\n", 1076 hw_enabled_dbuf_slices, 1077 enabled_dbuf_slices); 1078 } 1079 1080 static void gen9_disable_dc_states(struct drm_i915_private *dev_priv) 1081 { 1082 struct intel_cdclk_config cdclk_config = {}; 1083 1084 if (dev_priv->csr.target_dc_state == DC_STATE_EN_DC3CO) { 1085 tgl_disable_dc3co(dev_priv); 1086 return; 1087 } 1088 1089 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 1090 1091 dev_priv->display.get_cdclk(dev_priv, &cdclk_config); 1092 /* Can't read out voltage_level so can't use intel_cdclk_changed() */ 1093 drm_WARN_ON(&dev_priv->drm, 1094 intel_cdclk_needs_modeset(&dev_priv->cdclk.hw, 1095 &cdclk_config)); 1096 1097 gen9_assert_dbuf_enabled(dev_priv); 1098 1099 if (IS_GEN9_LP(dev_priv)) 1100 bxt_verify_ddi_phy_power_wells(dev_priv); 1101 1102 if (INTEL_GEN(dev_priv) >= 11) 1103 /* 1104 * DMC retains HW context only for port A, the other combo 1105 * PHY's HW context for port B is lost after DC transitions, 1106 * so we need to restore it manually. 1107 */ 1108 intel_combo_phy_init(dev_priv); 1109 } 1110 1111 static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv, 1112 struct i915_power_well *power_well) 1113 { 1114 gen9_disable_dc_states(dev_priv); 1115 } 1116 1117 static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv, 1118 struct i915_power_well *power_well) 1119 { 1120 if (!dev_priv->csr.dmc_payload) 1121 return; 1122 1123 switch (dev_priv->csr.target_dc_state) { 1124 case DC_STATE_EN_DC3CO: 1125 tgl_enable_dc3co(dev_priv); 1126 break; 1127 case DC_STATE_EN_UPTO_DC6: 1128 skl_enable_dc6(dev_priv); 1129 break; 1130 case DC_STATE_EN_UPTO_DC5: 1131 gen9_enable_dc5(dev_priv); 1132 break; 1133 } 1134 } 1135 1136 static void i9xx_power_well_sync_hw_noop(struct drm_i915_private *dev_priv, 1137 struct i915_power_well *power_well) 1138 { 1139 } 1140 1141 static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv, 1142 struct i915_power_well *power_well) 1143 { 1144 } 1145 1146 static bool i9xx_always_on_power_well_enabled(struct drm_i915_private *dev_priv, 1147 struct i915_power_well *power_well) 1148 { 1149 return true; 1150 } 1151 1152 static void i830_pipes_power_well_enable(struct drm_i915_private *dev_priv, 1153 struct i915_power_well *power_well) 1154 { 1155 if ((intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE) == 0) 1156 i830_enable_pipe(dev_priv, PIPE_A); 1157 if ((intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE) == 0) 1158 i830_enable_pipe(dev_priv, PIPE_B); 1159 } 1160 1161 static void i830_pipes_power_well_disable(struct drm_i915_private *dev_priv, 1162 struct i915_power_well *power_well) 1163 { 1164 i830_disable_pipe(dev_priv, PIPE_B); 1165 i830_disable_pipe(dev_priv, PIPE_A); 1166 } 1167 1168 static bool i830_pipes_power_well_enabled(struct drm_i915_private *dev_priv, 1169 struct i915_power_well *power_well) 1170 { 1171 return intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE && 1172 intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE; 1173 } 1174 1175 static void i830_pipes_power_well_sync_hw(struct drm_i915_private *dev_priv, 1176 struct i915_power_well *power_well) 1177 { 1178 if (power_well->count > 0) 1179 i830_pipes_power_well_enable(dev_priv, power_well); 1180 else 1181 i830_pipes_power_well_disable(dev_priv, power_well); 1182 } 1183 1184 static void vlv_set_power_well(struct drm_i915_private *dev_priv, 1185 struct i915_power_well *power_well, bool enable) 1186 { 1187 int pw_idx = power_well->desc->vlv.idx; 1188 u32 mask; 1189 u32 state; 1190 u32 ctrl; 1191 1192 mask = PUNIT_PWRGT_MASK(pw_idx); 1193 state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) : 1194 PUNIT_PWRGT_PWR_GATE(pw_idx); 1195 1196 vlv_punit_get(dev_priv); 1197 1198 #define COND \ 1199 ((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state) 1200 1201 if (COND) 1202 goto out; 1203 1204 ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL); 1205 ctrl &= ~mask; 1206 ctrl |= state; 1207 vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl); 1208 1209 if (wait_for(COND, 100)) 1210 drm_err(&dev_priv->drm, 1211 "timeout setting power well state %08x (%08x)\n", 1212 state, 1213 vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL)); 1214 1215 #undef COND 1216 1217 out: 1218 vlv_punit_put(dev_priv); 1219 } 1220 1221 static void vlv_power_well_enable(struct drm_i915_private *dev_priv, 1222 struct i915_power_well *power_well) 1223 { 1224 vlv_set_power_well(dev_priv, power_well, true); 1225 } 1226 1227 static void vlv_power_well_disable(struct drm_i915_private *dev_priv, 1228 struct i915_power_well *power_well) 1229 { 1230 vlv_set_power_well(dev_priv, power_well, false); 1231 } 1232 1233 static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv, 1234 struct i915_power_well *power_well) 1235 { 1236 int pw_idx = power_well->desc->vlv.idx; 1237 bool enabled = false; 1238 u32 mask; 1239 u32 state; 1240 u32 ctrl; 1241 1242 mask = PUNIT_PWRGT_MASK(pw_idx); 1243 ctrl = PUNIT_PWRGT_PWR_ON(pw_idx); 1244 1245 vlv_punit_get(dev_priv); 1246 1247 state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask; 1248 /* 1249 * We only ever set the power-on and power-gate states, anything 1250 * else is unexpected. 1251 */ 1252 drm_WARN_ON(&dev_priv->drm, state != PUNIT_PWRGT_PWR_ON(pw_idx) && 1253 state != PUNIT_PWRGT_PWR_GATE(pw_idx)); 1254 if (state == ctrl) 1255 enabled = true; 1256 1257 /* 1258 * A transient state at this point would mean some unexpected party 1259 * is poking at the power controls too. 1260 */ 1261 ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask; 1262 drm_WARN_ON(&dev_priv->drm, ctrl != state); 1263 1264 vlv_punit_put(dev_priv); 1265 1266 return enabled; 1267 } 1268 1269 static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) 1270 { 1271 u32 val; 1272 1273 /* 1274 * On driver load, a pipe may be active and driving a DSI display. 1275 * Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck 1276 * (and never recovering) in this case. intel_dsi_post_disable() will 1277 * clear it when we turn off the display. 1278 */ 1279 val = intel_de_read(dev_priv, DSPCLK_GATE_D); 1280 val &= DPOUNIT_CLOCK_GATE_DISABLE; 1281 val |= VRHUNIT_CLOCK_GATE_DISABLE; 1282 intel_de_write(dev_priv, DSPCLK_GATE_D, val); 1283 1284 /* 1285 * Disable trickle feed and enable pnd deadline calculation 1286 */ 1287 intel_de_write(dev_priv, MI_ARB_VLV, 1288 MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); 1289 intel_de_write(dev_priv, CBR1_VLV, 0); 1290 1291 drm_WARN_ON(&dev_priv->drm, RUNTIME_INFO(dev_priv)->rawclk_freq == 0); 1292 intel_de_write(dev_priv, RAWCLK_FREQ_VLV, 1293 DIV_ROUND_CLOSEST(RUNTIME_INFO(dev_priv)->rawclk_freq, 1294 1000)); 1295 } 1296 1297 static void vlv_display_power_well_init(struct drm_i915_private *dev_priv) 1298 { 1299 struct intel_encoder *encoder; 1300 enum pipe pipe; 1301 1302 /* 1303 * Enable the CRI clock source so we can get at the 1304 * display and the reference clock for VGA 1305 * hotplug / manual detection. Supposedly DSI also 1306 * needs the ref clock up and running. 1307 * 1308 * CHV DPLL B/C have some issues if VGA mode is enabled. 1309 */ 1310 for_each_pipe(dev_priv, pipe) { 1311 u32 val = intel_de_read(dev_priv, DPLL(pipe)); 1312 1313 val |= DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS; 1314 if (pipe != PIPE_A) 1315 val |= DPLL_INTEGRATED_CRI_CLK_VLV; 1316 1317 intel_de_write(dev_priv, DPLL(pipe), val); 1318 } 1319 1320 vlv_init_display_clock_gating(dev_priv); 1321 1322 spin_lock_irq(&dev_priv->irq_lock); 1323 valleyview_enable_display_irqs(dev_priv); 1324 spin_unlock_irq(&dev_priv->irq_lock); 1325 1326 /* 1327 * During driver initialization/resume we can avoid restoring the 1328 * part of the HW/SW state that will be inited anyway explicitly. 1329 */ 1330 if (dev_priv->power_domains.initializing) 1331 return; 1332 1333 intel_hpd_init(dev_priv); 1334 1335 /* Re-enable the ADPA, if we have one */ 1336 for_each_intel_encoder(&dev_priv->drm, encoder) { 1337 if (encoder->type == INTEL_OUTPUT_ANALOG) 1338 intel_crt_reset(&encoder->base); 1339 } 1340 1341 intel_vga_redisable_power_on(dev_priv); 1342 1343 intel_pps_unlock_regs_wa(dev_priv); 1344 } 1345 1346 static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv) 1347 { 1348 spin_lock_irq(&dev_priv->irq_lock); 1349 valleyview_disable_display_irqs(dev_priv); 1350 spin_unlock_irq(&dev_priv->irq_lock); 1351 1352 /* make sure we're done processing display irqs */ 1353 intel_synchronize_irq(dev_priv); 1354 1355 intel_power_sequencer_reset(dev_priv); 1356 1357 /* Prevent us from re-enabling polling on accident in late suspend */ 1358 if (!dev_priv->drm.dev->power.is_suspended) 1359 intel_hpd_poll_init(dev_priv); 1360 } 1361 1362 static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv, 1363 struct i915_power_well *power_well) 1364 { 1365 vlv_set_power_well(dev_priv, power_well, true); 1366 1367 vlv_display_power_well_init(dev_priv); 1368 } 1369 1370 static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv, 1371 struct i915_power_well *power_well) 1372 { 1373 vlv_display_power_well_deinit(dev_priv); 1374 1375 vlv_set_power_well(dev_priv, power_well, false); 1376 } 1377 1378 static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv, 1379 struct i915_power_well *power_well) 1380 { 1381 /* since ref/cri clock was enabled */ 1382 udelay(1); /* >10ns for cmnreset, >0ns for sidereset */ 1383 1384 vlv_set_power_well(dev_priv, power_well, true); 1385 1386 /* 1387 * From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx - 1388 * 6. De-assert cmn_reset/side_reset. Same as VLV X0. 1389 * a. GUnit 0x2110 bit[0] set to 1 (def 0) 1390 * b. The other bits such as sfr settings / modesel may all 1391 * be set to 0. 1392 * 1393 * This should only be done on init and resume from S3 with 1394 * both PLLs disabled, or we risk losing DPIO and PLL 1395 * synchronization. 1396 */ 1397 intel_de_write(dev_priv, DPIO_CTL, 1398 intel_de_read(dev_priv, DPIO_CTL) | DPIO_CMNRST); 1399 } 1400 1401 static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv, 1402 struct i915_power_well *power_well) 1403 { 1404 enum pipe pipe; 1405 1406 for_each_pipe(dev_priv, pipe) 1407 assert_pll_disabled(dev_priv, pipe); 1408 1409 /* Assert common reset */ 1410 intel_de_write(dev_priv, DPIO_CTL, 1411 intel_de_read(dev_priv, DPIO_CTL) & ~DPIO_CMNRST); 1412 1413 vlv_set_power_well(dev_priv, power_well, false); 1414 } 1415 1416 #define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0)) 1417 1418 #define BITS_SET(val, bits) (((val) & (bits)) == (bits)) 1419 1420 static void assert_chv_phy_status(struct drm_i915_private *dev_priv) 1421 { 1422 struct i915_power_well *cmn_bc = 1423 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC); 1424 struct i915_power_well *cmn_d = 1425 lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D); 1426 u32 phy_control = dev_priv->chv_phy_control; 1427 u32 phy_status = 0; 1428 u32 phy_status_mask = 0xffffffff; 1429 1430 /* 1431 * The BIOS can leave the PHY is some weird state 1432 * where it doesn't fully power down some parts. 1433 * Disable the asserts until the PHY has been fully 1434 * reset (ie. the power well has been disabled at 1435 * least once). 1436 */ 1437 if (!dev_priv->chv_phy_assert[DPIO_PHY0]) 1438 phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0) | 1439 PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0) | 1440 PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1) | 1441 PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1) | 1442 PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0) | 1443 PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1)); 1444 1445 if (!dev_priv->chv_phy_assert[DPIO_PHY1]) 1446 phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0) | 1447 PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) | 1448 PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1)); 1449 1450 if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) { 1451 phy_status |= PHY_POWERGOOD(DPIO_PHY0); 1452 1453 /* this assumes override is only used to enable lanes */ 1454 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0)) == 0) 1455 phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0); 1456 1457 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1)) == 0) 1458 phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1); 1459 1460 /* CL1 is on whenever anything is on in either channel */ 1461 if (BITS_SET(phy_control, 1462 PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0) | 1463 PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1))) 1464 phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0); 1465 1466 /* 1467 * The DPLLB check accounts for the pipe B + port A usage 1468 * with CL2 powered up but all the lanes in the second channel 1469 * powered down. 1470 */ 1471 if (BITS_SET(phy_control, 1472 PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)) && 1473 (intel_de_read(dev_priv, DPLL(PIPE_B)) & DPLL_VCO_ENABLE) == 0) 1474 phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1); 1475 1476 if (BITS_SET(phy_control, 1477 PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH0))) 1478 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0); 1479 if (BITS_SET(phy_control, 1480 PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH0))) 1481 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1); 1482 1483 if (BITS_SET(phy_control, 1484 PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH1))) 1485 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0); 1486 if (BITS_SET(phy_control, 1487 PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH1))) 1488 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1); 1489 } 1490 1491 if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) { 1492 phy_status |= PHY_POWERGOOD(DPIO_PHY1); 1493 1494 /* this assumes override is only used to enable lanes */ 1495 if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0)) == 0) 1496 phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0); 1497 1498 if (BITS_SET(phy_control, 1499 PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0))) 1500 phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0); 1501 1502 if (BITS_SET(phy_control, 1503 PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY1, DPIO_CH0))) 1504 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0); 1505 if (BITS_SET(phy_control, 1506 PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY1, DPIO_CH0))) 1507 phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1); 1508 } 1509 1510 phy_status &= phy_status_mask; 1511 1512 /* 1513 * The PHY may be busy with some initial calibration and whatnot, 1514 * so the power state can take a while to actually change. 1515 */ 1516 if (intel_de_wait_for_register(dev_priv, DISPLAY_PHY_STATUS, 1517 phy_status_mask, phy_status, 10)) 1518 drm_err(&dev_priv->drm, 1519 "Unexpected PHY_STATUS 0x%08x, expected 0x%08x (PHY_CONTROL=0x%08x)\n", 1520 intel_de_read(dev_priv, DISPLAY_PHY_STATUS) & phy_status_mask, 1521 phy_status, dev_priv->chv_phy_control); 1522 } 1523 1524 #undef BITS_SET 1525 1526 static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv, 1527 struct i915_power_well *power_well) 1528 { 1529 enum dpio_phy phy; 1530 enum pipe pipe; 1531 u32 tmp; 1532 1533 drm_WARN_ON_ONCE(&dev_priv->drm, 1534 power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC && 1535 power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D); 1536 1537 if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) { 1538 pipe = PIPE_A; 1539 phy = DPIO_PHY0; 1540 } else { 1541 pipe = PIPE_C; 1542 phy = DPIO_PHY1; 1543 } 1544 1545 /* since ref/cri clock was enabled */ 1546 udelay(1); /* >10ns for cmnreset, >0ns for sidereset */ 1547 vlv_set_power_well(dev_priv, power_well, true); 1548 1549 /* Poll for phypwrgood signal */ 1550 if (intel_de_wait_for_set(dev_priv, DISPLAY_PHY_STATUS, 1551 PHY_POWERGOOD(phy), 1)) 1552 drm_err(&dev_priv->drm, "Display PHY %d is not power up\n", 1553 phy); 1554 1555 vlv_dpio_get(dev_priv); 1556 1557 /* Enable dynamic power down */ 1558 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28); 1559 tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN | 1560 DPIO_SUS_CLK_CONFIG_GATE_CLKREQ; 1561 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp); 1562 1563 if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) { 1564 tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1); 1565 tmp |= DPIO_DYNPWRDOWNEN_CH1; 1566 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp); 1567 } else { 1568 /* 1569 * Force the non-existing CL2 off. BXT does this 1570 * too, so maybe it saves some power even though 1571 * CL2 doesn't exist? 1572 */ 1573 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); 1574 tmp |= DPIO_CL2_LDOFUSE_PWRENB; 1575 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp); 1576 } 1577 1578 vlv_dpio_put(dev_priv); 1579 1580 dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy); 1581 intel_de_write(dev_priv, DISPLAY_PHY_CONTROL, 1582 dev_priv->chv_phy_control); 1583 1584 drm_dbg_kms(&dev_priv->drm, 1585 "Enabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n", 1586 phy, dev_priv->chv_phy_control); 1587 1588 assert_chv_phy_status(dev_priv); 1589 } 1590 1591 static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv, 1592 struct i915_power_well *power_well) 1593 { 1594 enum dpio_phy phy; 1595 1596 drm_WARN_ON_ONCE(&dev_priv->drm, 1597 power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC && 1598 power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D); 1599 1600 if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) { 1601 phy = DPIO_PHY0; 1602 assert_pll_disabled(dev_priv, PIPE_A); 1603 assert_pll_disabled(dev_priv, PIPE_B); 1604 } else { 1605 phy = DPIO_PHY1; 1606 assert_pll_disabled(dev_priv, PIPE_C); 1607 } 1608 1609 dev_priv->chv_phy_control &= ~PHY_COM_LANE_RESET_DEASSERT(phy); 1610 intel_de_write(dev_priv, DISPLAY_PHY_CONTROL, 1611 dev_priv->chv_phy_control); 1612 1613 vlv_set_power_well(dev_priv, power_well, false); 1614 1615 drm_dbg_kms(&dev_priv->drm, 1616 "Disabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n", 1617 phy, dev_priv->chv_phy_control); 1618 1619 /* PHY is fully reset now, so we can enable the PHY state asserts */ 1620 dev_priv->chv_phy_assert[phy] = true; 1621 1622 assert_chv_phy_status(dev_priv); 1623 } 1624 1625 static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpio_phy phy, 1626 enum dpio_channel ch, bool override, unsigned int mask) 1627 { 1628 enum pipe pipe = phy == DPIO_PHY0 ? PIPE_A : PIPE_C; 1629 u32 reg, val, expected, actual; 1630 1631 /* 1632 * The BIOS can leave the PHY is some weird state 1633 * where it doesn't fully power down some parts. 1634 * Disable the asserts until the PHY has been fully 1635 * reset (ie. the power well has been disabled at 1636 * least once). 1637 */ 1638 if (!dev_priv->chv_phy_assert[phy]) 1639 return; 1640 1641 if (ch == DPIO_CH0) 1642 reg = _CHV_CMN_DW0_CH0; 1643 else 1644 reg = _CHV_CMN_DW6_CH1; 1645 1646 vlv_dpio_get(dev_priv); 1647 val = vlv_dpio_read(dev_priv, pipe, reg); 1648 vlv_dpio_put(dev_priv); 1649 1650 /* 1651 * This assumes !override is only used when the port is disabled. 1652 * All lanes should power down even without the override when 1653 * the port is disabled. 1654 */ 1655 if (!override || mask == 0xf) { 1656 expected = DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN; 1657 /* 1658 * If CH1 common lane is not active anymore 1659 * (eg. for pipe B DPLL) the entire channel will 1660 * shut down, which causes the common lane registers 1661 * to read as 0. That means we can't actually check 1662 * the lane power down status bits, but as the entire 1663 * register reads as 0 it's a good indication that the 1664 * channel is indeed entirely powered down. 1665 */ 1666 if (ch == DPIO_CH1 && val == 0) 1667 expected = 0; 1668 } else if (mask != 0x0) { 1669 expected = DPIO_ANYDL_POWERDOWN; 1670 } else { 1671 expected = 0; 1672 } 1673 1674 if (ch == DPIO_CH0) 1675 actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH0; 1676 else 1677 actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH1; 1678 actual &= DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN; 1679 1680 drm_WARN(&dev_priv->drm, actual != expected, 1681 "Unexpected DPIO lane power down: all %d, any %d. Expected: all %d, any %d. (0x%x = 0x%08x)\n", 1682 !!(actual & DPIO_ALLDL_POWERDOWN), 1683 !!(actual & DPIO_ANYDL_POWERDOWN), 1684 !!(expected & DPIO_ALLDL_POWERDOWN), 1685 !!(expected & DPIO_ANYDL_POWERDOWN), 1686 reg, val); 1687 } 1688 1689 bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy, 1690 enum dpio_channel ch, bool override) 1691 { 1692 struct i915_power_domains *power_domains = &dev_priv->power_domains; 1693 bool was_override; 1694 1695 mutex_lock(&power_domains->lock); 1696 1697 was_override = dev_priv->chv_phy_control & PHY_CH_POWER_DOWN_OVRD_EN(phy, ch); 1698 1699 if (override == was_override) 1700 goto out; 1701 1702 if (override) 1703 dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch); 1704 else 1705 dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch); 1706 1707 intel_de_write(dev_priv, DISPLAY_PHY_CONTROL, 1708 dev_priv->chv_phy_control); 1709 1710 drm_dbg_kms(&dev_priv->drm, 1711 "Power gating DPIO PHY%d CH%d (DPIO_PHY_CONTROL=0x%08x)\n", 1712 phy, ch, dev_priv->chv_phy_control); 1713 1714 assert_chv_phy_status(dev_priv); 1715 1716 out: 1717 mutex_unlock(&power_domains->lock); 1718 1719 return was_override; 1720 } 1721 1722 void chv_phy_powergate_lanes(struct intel_encoder *encoder, 1723 bool override, unsigned int mask) 1724 { 1725 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1726 struct i915_power_domains *power_domains = &dev_priv->power_domains; 1727 enum dpio_phy phy = vlv_dport_to_phy(enc_to_dig_port(encoder)); 1728 enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(encoder)); 1729 1730 mutex_lock(&power_domains->lock); 1731 1732 dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD(0xf, phy, ch); 1733 dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD(mask, phy, ch); 1734 1735 if (override) 1736 dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch); 1737 else 1738 dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch); 1739 1740 intel_de_write(dev_priv, DISPLAY_PHY_CONTROL, 1741 dev_priv->chv_phy_control); 1742 1743 drm_dbg_kms(&dev_priv->drm, 1744 "Power gating DPIO PHY%d CH%d lanes 0x%x (PHY_CONTROL=0x%08x)\n", 1745 phy, ch, mask, dev_priv->chv_phy_control); 1746 1747 assert_chv_phy_status(dev_priv); 1748 1749 assert_chv_phy_powergate(dev_priv, phy, ch, override, mask); 1750 1751 mutex_unlock(&power_domains->lock); 1752 } 1753 1754 static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv, 1755 struct i915_power_well *power_well) 1756 { 1757 enum pipe pipe = PIPE_A; 1758 bool enabled; 1759 u32 state, ctrl; 1760 1761 vlv_punit_get(dev_priv); 1762 1763 state = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe); 1764 /* 1765 * We only ever set the power-on and power-gate states, anything 1766 * else is unexpected. 1767 */ 1768 drm_WARN_ON(&dev_priv->drm, state != DP_SSS_PWR_ON(pipe) && 1769 state != DP_SSS_PWR_GATE(pipe)); 1770 enabled = state == DP_SSS_PWR_ON(pipe); 1771 1772 /* 1773 * A transient state at this point would mean some unexpected party 1774 * is poking at the power controls too. 1775 */ 1776 ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSC_MASK(pipe); 1777 drm_WARN_ON(&dev_priv->drm, ctrl << 16 != state); 1778 1779 vlv_punit_put(dev_priv); 1780 1781 return enabled; 1782 } 1783 1784 static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv, 1785 struct i915_power_well *power_well, 1786 bool enable) 1787 { 1788 enum pipe pipe = PIPE_A; 1789 u32 state; 1790 u32 ctrl; 1791 1792 state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe); 1793 1794 vlv_punit_get(dev_priv); 1795 1796 #define COND \ 1797 ((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe)) == state) 1798 1799 if (COND) 1800 goto out; 1801 1802 ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM); 1803 ctrl &= ~DP_SSC_MASK(pipe); 1804 ctrl |= enable ? DP_SSC_PWR_ON(pipe) : DP_SSC_PWR_GATE(pipe); 1805 vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, ctrl); 1806 1807 if (wait_for(COND, 100)) 1808 drm_err(&dev_priv->drm, 1809 "timeout setting power well state %08x (%08x)\n", 1810 state, 1811 vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM)); 1812 1813 #undef COND 1814 1815 out: 1816 vlv_punit_put(dev_priv); 1817 } 1818 1819 static void chv_pipe_power_well_sync_hw(struct drm_i915_private *dev_priv, 1820 struct i915_power_well *power_well) 1821 { 1822 intel_de_write(dev_priv, DISPLAY_PHY_CONTROL, 1823 dev_priv->chv_phy_control); 1824 } 1825 1826 static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv, 1827 struct i915_power_well *power_well) 1828 { 1829 chv_set_pipe_power_well(dev_priv, power_well, true); 1830 1831 vlv_display_power_well_init(dev_priv); 1832 } 1833 1834 static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv, 1835 struct i915_power_well *power_well) 1836 { 1837 vlv_display_power_well_deinit(dev_priv); 1838 1839 chv_set_pipe_power_well(dev_priv, power_well, false); 1840 } 1841 1842 static u64 __async_put_domains_mask(struct i915_power_domains *power_domains) 1843 { 1844 return power_domains->async_put_domains[0] | 1845 power_domains->async_put_domains[1]; 1846 } 1847 1848 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 1849 1850 static bool 1851 assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains) 1852 { 1853 return !WARN_ON(power_domains->async_put_domains[0] & 1854 power_domains->async_put_domains[1]); 1855 } 1856 1857 static bool 1858 __async_put_domains_state_ok(struct i915_power_domains *power_domains) 1859 { 1860 enum intel_display_power_domain domain; 1861 bool err = false; 1862 1863 err |= !assert_async_put_domain_masks_disjoint(power_domains); 1864 err |= WARN_ON(!!power_domains->async_put_wakeref != 1865 !!__async_put_domains_mask(power_domains)); 1866 1867 for_each_power_domain(domain, __async_put_domains_mask(power_domains)) 1868 err |= WARN_ON(power_domains->domain_use_count[domain] != 1); 1869 1870 return !err; 1871 } 1872 1873 static void print_power_domains(struct i915_power_domains *power_domains, 1874 const char *prefix, u64 mask) 1875 { 1876 enum intel_display_power_domain domain; 1877 1878 DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask)); 1879 for_each_power_domain(domain, mask) 1880 DRM_DEBUG_DRIVER("%s use_count %d\n", 1881 intel_display_power_domain_str(domain), 1882 power_domains->domain_use_count[domain]); 1883 } 1884 1885 static void 1886 print_async_put_domains_state(struct i915_power_domains *power_domains) 1887 { 1888 DRM_DEBUG_DRIVER("async_put_wakeref %u\n", 1889 power_domains->async_put_wakeref); 1890 1891 print_power_domains(power_domains, "async_put_domains[0]", 1892 power_domains->async_put_domains[0]); 1893 print_power_domains(power_domains, "async_put_domains[1]", 1894 power_domains->async_put_domains[1]); 1895 } 1896 1897 static void 1898 verify_async_put_domains_state(struct i915_power_domains *power_domains) 1899 { 1900 if (!__async_put_domains_state_ok(power_domains)) 1901 print_async_put_domains_state(power_domains); 1902 } 1903 1904 #else 1905 1906 static void 1907 assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains) 1908 { 1909 } 1910 1911 static void 1912 verify_async_put_domains_state(struct i915_power_domains *power_domains) 1913 { 1914 } 1915 1916 #endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */ 1917 1918 static u64 async_put_domains_mask(struct i915_power_domains *power_domains) 1919 { 1920 assert_async_put_domain_masks_disjoint(power_domains); 1921 1922 return __async_put_domains_mask(power_domains); 1923 } 1924 1925 static void 1926 async_put_domains_clear_domain(struct i915_power_domains *power_domains, 1927 enum intel_display_power_domain domain) 1928 { 1929 assert_async_put_domain_masks_disjoint(power_domains); 1930 1931 power_domains->async_put_domains[0] &= ~BIT_ULL(domain); 1932 power_domains->async_put_domains[1] &= ~BIT_ULL(domain); 1933 } 1934 1935 static bool 1936 intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv, 1937 enum intel_display_power_domain domain) 1938 { 1939 struct i915_power_domains *power_domains = &dev_priv->power_domains; 1940 bool ret = false; 1941 1942 if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain))) 1943 goto out_verify; 1944 1945 async_put_domains_clear_domain(power_domains, domain); 1946 1947 ret = true; 1948 1949 if (async_put_domains_mask(power_domains)) 1950 goto out_verify; 1951 1952 cancel_delayed_work(&power_domains->async_put_work); 1953 intel_runtime_pm_put_raw(&dev_priv->runtime_pm, 1954 fetch_and_zero(&power_domains->async_put_wakeref)); 1955 out_verify: 1956 verify_async_put_domains_state(power_domains); 1957 1958 return ret; 1959 } 1960 1961 static void 1962 __intel_display_power_get_domain(struct drm_i915_private *dev_priv, 1963 enum intel_display_power_domain domain) 1964 { 1965 struct i915_power_domains *power_domains = &dev_priv->power_domains; 1966 struct i915_power_well *power_well; 1967 1968 if (intel_display_power_grab_async_put_ref(dev_priv, domain)) 1969 return; 1970 1971 for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain)) 1972 intel_power_well_get(dev_priv, power_well); 1973 1974 power_domains->domain_use_count[domain]++; 1975 } 1976 1977 /** 1978 * intel_display_power_get - grab a power domain reference 1979 * @dev_priv: i915 device instance 1980 * @domain: power domain to reference 1981 * 1982 * This function grabs a power domain reference for @domain and ensures that the 1983 * power domain and all its parents are powered up. Therefore users should only 1984 * grab a reference to the innermost power domain they need. 1985 * 1986 * Any power domain reference obtained by this function must have a symmetric 1987 * call to intel_display_power_put() to release the reference again. 1988 */ 1989 intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv, 1990 enum intel_display_power_domain domain) 1991 { 1992 struct i915_power_domains *power_domains = &dev_priv->power_domains; 1993 intel_wakeref_t wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); 1994 1995 mutex_lock(&power_domains->lock); 1996 __intel_display_power_get_domain(dev_priv, domain); 1997 mutex_unlock(&power_domains->lock); 1998 1999 return wakeref; 2000 } 2001 2002 /** 2003 * intel_display_power_get_if_enabled - grab a reference for an enabled display power domain 2004 * @dev_priv: i915 device instance 2005 * @domain: power domain to reference 2006 * 2007 * This function grabs a power domain reference for @domain and ensures that the 2008 * power domain and all its parents are powered up. Therefore users should only 2009 * grab a reference to the innermost power domain they need. 2010 * 2011 * Any power domain reference obtained by this function must have a symmetric 2012 * call to intel_display_power_put() to release the reference again. 2013 */ 2014 intel_wakeref_t 2015 intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv, 2016 enum intel_display_power_domain domain) 2017 { 2018 struct i915_power_domains *power_domains = &dev_priv->power_domains; 2019 intel_wakeref_t wakeref; 2020 bool is_enabled; 2021 2022 wakeref = intel_runtime_pm_get_if_in_use(&dev_priv->runtime_pm); 2023 if (!wakeref) 2024 return false; 2025 2026 mutex_lock(&power_domains->lock); 2027 2028 if (__intel_display_power_is_enabled(dev_priv, domain)) { 2029 __intel_display_power_get_domain(dev_priv, domain); 2030 is_enabled = true; 2031 } else { 2032 is_enabled = false; 2033 } 2034 2035 mutex_unlock(&power_domains->lock); 2036 2037 if (!is_enabled) { 2038 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); 2039 wakeref = 0; 2040 } 2041 2042 return wakeref; 2043 } 2044 2045 static void 2046 __intel_display_power_put_domain(struct drm_i915_private *dev_priv, 2047 enum intel_display_power_domain domain) 2048 { 2049 struct i915_power_domains *power_domains; 2050 struct i915_power_well *power_well; 2051 const char *name = intel_display_power_domain_str(domain); 2052 2053 power_domains = &dev_priv->power_domains; 2054 2055 drm_WARN(&dev_priv->drm, !power_domains->domain_use_count[domain], 2056 "Use count on domain %s is already zero\n", 2057 name); 2058 drm_WARN(&dev_priv->drm, 2059 async_put_domains_mask(power_domains) & BIT_ULL(domain), 2060 "Async disabling of domain %s is pending\n", 2061 name); 2062 2063 power_domains->domain_use_count[domain]--; 2064 2065 for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain)) 2066 intel_power_well_put(dev_priv, power_well); 2067 } 2068 2069 static void __intel_display_power_put(struct drm_i915_private *dev_priv, 2070 enum intel_display_power_domain domain) 2071 { 2072 struct i915_power_domains *power_domains = &dev_priv->power_domains; 2073 2074 mutex_lock(&power_domains->lock); 2075 __intel_display_power_put_domain(dev_priv, domain); 2076 mutex_unlock(&power_domains->lock); 2077 } 2078 2079 /** 2080 * intel_display_power_put_unchecked - release an unchecked power domain reference 2081 * @dev_priv: i915 device instance 2082 * @domain: power domain to reference 2083 * 2084 * This function drops the power domain reference obtained by 2085 * intel_display_power_get() and might power down the corresponding hardware 2086 * block right away if this is the last reference. 2087 * 2088 * This function exists only for historical reasons and should be avoided in 2089 * new code, as the correctness of its use cannot be checked. Always use 2090 * intel_display_power_put() instead. 2091 */ 2092 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv, 2093 enum intel_display_power_domain domain) 2094 { 2095 __intel_display_power_put(dev_priv, domain); 2096 intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm); 2097 } 2098 2099 static void 2100 queue_async_put_domains_work(struct i915_power_domains *power_domains, 2101 intel_wakeref_t wakeref) 2102 { 2103 WARN_ON(power_domains->async_put_wakeref); 2104 power_domains->async_put_wakeref = wakeref; 2105 WARN_ON(!queue_delayed_work(system_unbound_wq, 2106 &power_domains->async_put_work, 2107 msecs_to_jiffies(100))); 2108 } 2109 2110 static void 2111 release_async_put_domains(struct i915_power_domains *power_domains, u64 mask) 2112 { 2113 struct drm_i915_private *dev_priv = 2114 container_of(power_domains, struct drm_i915_private, 2115 power_domains); 2116 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 2117 enum intel_display_power_domain domain; 2118 intel_wakeref_t wakeref; 2119 2120 /* 2121 * The caller must hold already raw wakeref, upgrade that to a proper 2122 * wakeref to make the state checker happy about the HW access during 2123 * power well disabling. 2124 */ 2125 assert_rpm_raw_wakeref_held(rpm); 2126 wakeref = intel_runtime_pm_get(rpm); 2127 2128 for_each_power_domain(domain, mask) { 2129 /* Clear before put, so put's sanity check is happy. */ 2130 async_put_domains_clear_domain(power_domains, domain); 2131 __intel_display_power_put_domain(dev_priv, domain); 2132 } 2133 2134 intel_runtime_pm_put(rpm, wakeref); 2135 } 2136 2137 static void 2138 intel_display_power_put_async_work(struct work_struct *work) 2139 { 2140 struct drm_i915_private *dev_priv = 2141 container_of(work, struct drm_i915_private, 2142 power_domains.async_put_work.work); 2143 struct i915_power_domains *power_domains = &dev_priv->power_domains; 2144 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 2145 intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm); 2146 intel_wakeref_t old_work_wakeref = 0; 2147 2148 mutex_lock(&power_domains->lock); 2149 2150 /* 2151 * Bail out if all the domain refs pending to be released were grabbed 2152 * by subsequent gets or a flush_work. 2153 */ 2154 old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref); 2155 if (!old_work_wakeref) 2156 goto out_verify; 2157 2158 release_async_put_domains(power_domains, 2159 power_domains->async_put_domains[0]); 2160 2161 /* Requeue the work if more domains were async put meanwhile. */ 2162 if (power_domains->async_put_domains[1]) { 2163 power_domains->async_put_domains[0] = 2164 fetch_and_zero(&power_domains->async_put_domains[1]); 2165 queue_async_put_domains_work(power_domains, 2166 fetch_and_zero(&new_work_wakeref)); 2167 } 2168 2169 out_verify: 2170 verify_async_put_domains_state(power_domains); 2171 2172 mutex_unlock(&power_domains->lock); 2173 2174 if (old_work_wakeref) 2175 intel_runtime_pm_put_raw(rpm, old_work_wakeref); 2176 if (new_work_wakeref) 2177 intel_runtime_pm_put_raw(rpm, new_work_wakeref); 2178 } 2179 2180 /** 2181 * intel_display_power_put_async - release a power domain reference asynchronously 2182 * @i915: i915 device instance 2183 * @domain: power domain to reference 2184 * @wakeref: wakeref acquired for the reference that is being released 2185 * 2186 * This function drops the power domain reference obtained by 2187 * intel_display_power_get*() and schedules a work to power down the 2188 * corresponding hardware block if this is the last reference. 2189 */ 2190 void __intel_display_power_put_async(struct drm_i915_private *i915, 2191 enum intel_display_power_domain domain, 2192 intel_wakeref_t wakeref) 2193 { 2194 struct i915_power_domains *power_domains = &i915->power_domains; 2195 struct intel_runtime_pm *rpm = &i915->runtime_pm; 2196 intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm); 2197 2198 mutex_lock(&power_domains->lock); 2199 2200 if (power_domains->domain_use_count[domain] > 1) { 2201 __intel_display_power_put_domain(i915, domain); 2202 2203 goto out_verify; 2204 } 2205 2206 drm_WARN_ON(&i915->drm, power_domains->domain_use_count[domain] != 1); 2207 2208 /* Let a pending work requeue itself or queue a new one. */ 2209 if (power_domains->async_put_wakeref) { 2210 power_domains->async_put_domains[1] |= BIT_ULL(domain); 2211 } else { 2212 power_domains->async_put_domains[0] |= BIT_ULL(domain); 2213 queue_async_put_domains_work(power_domains, 2214 fetch_and_zero(&work_wakeref)); 2215 } 2216 2217 out_verify: 2218 verify_async_put_domains_state(power_domains); 2219 2220 mutex_unlock(&power_domains->lock); 2221 2222 if (work_wakeref) 2223 intel_runtime_pm_put_raw(rpm, work_wakeref); 2224 2225 intel_runtime_pm_put(rpm, wakeref); 2226 } 2227 2228 /** 2229 * intel_display_power_flush_work - flushes the async display power disabling work 2230 * @i915: i915 device instance 2231 * 2232 * Flushes any pending work that was scheduled by a preceding 2233 * intel_display_power_put_async() call, completing the disabling of the 2234 * corresponding power domains. 2235 * 2236 * Note that the work handler function may still be running after this 2237 * function returns; to ensure that the work handler isn't running use 2238 * intel_display_power_flush_work_sync() instead. 2239 */ 2240 void intel_display_power_flush_work(struct drm_i915_private *i915) 2241 { 2242 struct i915_power_domains *power_domains = &i915->power_domains; 2243 intel_wakeref_t work_wakeref; 2244 2245 mutex_lock(&power_domains->lock); 2246 2247 work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref); 2248 if (!work_wakeref) 2249 goto out_verify; 2250 2251 release_async_put_domains(power_domains, 2252 async_put_domains_mask(power_domains)); 2253 cancel_delayed_work(&power_domains->async_put_work); 2254 2255 out_verify: 2256 verify_async_put_domains_state(power_domains); 2257 2258 mutex_unlock(&power_domains->lock); 2259 2260 if (work_wakeref) 2261 intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref); 2262 } 2263 2264 /** 2265 * intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work 2266 * @i915: i915 device instance 2267 * 2268 * Like intel_display_power_flush_work(), but also ensure that the work 2269 * handler function is not running any more when this function returns. 2270 */ 2271 static void 2272 intel_display_power_flush_work_sync(struct drm_i915_private *i915) 2273 { 2274 struct i915_power_domains *power_domains = &i915->power_domains; 2275 2276 intel_display_power_flush_work(i915); 2277 cancel_delayed_work_sync(&power_domains->async_put_work); 2278 2279 verify_async_put_domains_state(power_domains); 2280 2281 drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref); 2282 } 2283 2284 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 2285 /** 2286 * intel_display_power_put - release a power domain reference 2287 * @dev_priv: i915 device instance 2288 * @domain: power domain to reference 2289 * @wakeref: wakeref acquired for the reference that is being released 2290 * 2291 * This function drops the power domain reference obtained by 2292 * intel_display_power_get() and might power down the corresponding hardware 2293 * block right away if this is the last reference. 2294 */ 2295 void intel_display_power_put(struct drm_i915_private *dev_priv, 2296 enum intel_display_power_domain domain, 2297 intel_wakeref_t wakeref) 2298 { 2299 __intel_display_power_put(dev_priv, domain); 2300 intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); 2301 } 2302 #endif 2303 2304 #define I830_PIPES_POWER_DOMAINS ( \ 2305 BIT_ULL(POWER_DOMAIN_PIPE_A) | \ 2306 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2307 BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \ 2308 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2309 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2310 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2311 BIT_ULL(POWER_DOMAIN_INIT)) 2312 2313 #define VLV_DISPLAY_POWER_DOMAINS ( \ 2314 BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \ 2315 BIT_ULL(POWER_DOMAIN_PIPE_A) | \ 2316 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2317 BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \ 2318 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2319 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2320 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2321 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2322 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2323 BIT_ULL(POWER_DOMAIN_PORT_DSI) | \ 2324 BIT_ULL(POWER_DOMAIN_PORT_CRT) | \ 2325 BIT_ULL(POWER_DOMAIN_VGA) | \ 2326 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2327 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2328 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2329 BIT_ULL(POWER_DOMAIN_GMBUS) | \ 2330 BIT_ULL(POWER_DOMAIN_INIT)) 2331 2332 #define VLV_DPIO_CMN_BC_POWER_DOMAINS ( \ 2333 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2334 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2335 BIT_ULL(POWER_DOMAIN_PORT_CRT) | \ 2336 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2337 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2338 BIT_ULL(POWER_DOMAIN_INIT)) 2339 2340 #define VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS ( \ 2341 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2342 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2343 BIT_ULL(POWER_DOMAIN_INIT)) 2344 2345 #define VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS ( \ 2346 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2347 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2348 BIT_ULL(POWER_DOMAIN_INIT)) 2349 2350 #define VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS ( \ 2351 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2352 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2353 BIT_ULL(POWER_DOMAIN_INIT)) 2354 2355 #define VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS ( \ 2356 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2357 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2358 BIT_ULL(POWER_DOMAIN_INIT)) 2359 2360 #define CHV_DISPLAY_POWER_DOMAINS ( \ 2361 BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \ 2362 BIT_ULL(POWER_DOMAIN_PIPE_A) | \ 2363 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2364 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2365 BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \ 2366 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2367 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2368 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2369 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2370 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2371 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2372 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2373 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2374 BIT_ULL(POWER_DOMAIN_PORT_DSI) | \ 2375 BIT_ULL(POWER_DOMAIN_VGA) | \ 2376 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2377 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2378 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2379 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2380 BIT_ULL(POWER_DOMAIN_GMBUS) | \ 2381 BIT_ULL(POWER_DOMAIN_INIT)) 2382 2383 #define CHV_DPIO_CMN_BC_POWER_DOMAINS ( \ 2384 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2385 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2386 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2387 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2388 BIT_ULL(POWER_DOMAIN_INIT)) 2389 2390 #define CHV_DPIO_CMN_D_POWER_DOMAINS ( \ 2391 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2392 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2393 BIT_ULL(POWER_DOMAIN_INIT)) 2394 2395 #define HSW_DISPLAY_POWER_DOMAINS ( \ 2396 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2397 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2398 BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \ 2399 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2400 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2401 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2402 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2403 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2404 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2405 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2406 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2407 BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \ 2408 BIT_ULL(POWER_DOMAIN_VGA) | \ 2409 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2410 BIT_ULL(POWER_DOMAIN_INIT)) 2411 2412 #define BDW_DISPLAY_POWER_DOMAINS ( \ 2413 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2414 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2415 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2416 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2417 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2418 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2419 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2420 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2421 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2422 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2423 BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \ 2424 BIT_ULL(POWER_DOMAIN_VGA) | \ 2425 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2426 BIT_ULL(POWER_DOMAIN_INIT)) 2427 2428 #define SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \ 2429 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2430 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2431 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2432 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2433 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2434 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2435 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2436 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2437 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2438 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2439 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \ 2440 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2441 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2442 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2443 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2444 BIT_ULL(POWER_DOMAIN_VGA) | \ 2445 BIT_ULL(POWER_DOMAIN_INIT)) 2446 #define SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS ( \ 2447 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \ 2448 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO) | \ 2449 BIT_ULL(POWER_DOMAIN_INIT)) 2450 #define SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \ 2451 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \ 2452 BIT_ULL(POWER_DOMAIN_INIT)) 2453 #define SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \ 2454 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \ 2455 BIT_ULL(POWER_DOMAIN_INIT)) 2456 #define SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS ( \ 2457 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \ 2458 BIT_ULL(POWER_DOMAIN_INIT)) 2459 #define SKL_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2460 SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ 2461 BIT_ULL(POWER_DOMAIN_GT_IRQ) | \ 2462 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2463 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2464 BIT_ULL(POWER_DOMAIN_INIT)) 2465 2466 #define BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \ 2467 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2468 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2469 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2470 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2471 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2472 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2473 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2474 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2475 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2476 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2477 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2478 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2479 BIT_ULL(POWER_DOMAIN_VGA) | \ 2480 BIT_ULL(POWER_DOMAIN_INIT)) 2481 #define BXT_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2482 BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ 2483 BIT_ULL(POWER_DOMAIN_GT_IRQ) | \ 2484 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2485 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2486 BIT_ULL(POWER_DOMAIN_GMBUS) | \ 2487 BIT_ULL(POWER_DOMAIN_INIT)) 2488 #define BXT_DPIO_CMN_A_POWER_DOMAINS ( \ 2489 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \ 2490 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2491 BIT_ULL(POWER_DOMAIN_INIT)) 2492 #define BXT_DPIO_CMN_BC_POWER_DOMAINS ( \ 2493 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2494 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2495 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2496 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2497 BIT_ULL(POWER_DOMAIN_INIT)) 2498 2499 #define GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \ 2500 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2501 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2502 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2503 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2504 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2505 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2506 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2507 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2508 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2509 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2510 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2511 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2512 BIT_ULL(POWER_DOMAIN_VGA) | \ 2513 BIT_ULL(POWER_DOMAIN_INIT)) 2514 #define GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS ( \ 2515 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO)) 2516 #define GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \ 2517 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO)) 2518 #define GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \ 2519 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO)) 2520 #define GLK_DPIO_CMN_A_POWER_DOMAINS ( \ 2521 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \ 2522 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2523 BIT_ULL(POWER_DOMAIN_INIT)) 2524 #define GLK_DPIO_CMN_B_POWER_DOMAINS ( \ 2525 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2526 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2527 BIT_ULL(POWER_DOMAIN_INIT)) 2528 #define GLK_DPIO_CMN_C_POWER_DOMAINS ( \ 2529 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2530 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2531 BIT_ULL(POWER_DOMAIN_INIT)) 2532 #define GLK_DISPLAY_AUX_A_POWER_DOMAINS ( \ 2533 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2534 BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \ 2535 BIT_ULL(POWER_DOMAIN_INIT)) 2536 #define GLK_DISPLAY_AUX_B_POWER_DOMAINS ( \ 2537 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2538 BIT_ULL(POWER_DOMAIN_INIT)) 2539 #define GLK_DISPLAY_AUX_C_POWER_DOMAINS ( \ 2540 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2541 BIT_ULL(POWER_DOMAIN_INIT)) 2542 #define GLK_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2543 GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ 2544 BIT_ULL(POWER_DOMAIN_GT_IRQ) | \ 2545 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2546 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2547 BIT_ULL(POWER_DOMAIN_GMBUS) | \ 2548 BIT_ULL(POWER_DOMAIN_INIT)) 2549 2550 #define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \ 2551 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2552 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2553 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2554 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2555 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2556 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2557 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2558 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2559 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2560 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2561 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \ 2562 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2563 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2564 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2565 BIT_ULL(POWER_DOMAIN_AUX_F) | \ 2566 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2567 BIT_ULL(POWER_DOMAIN_VGA) | \ 2568 BIT_ULL(POWER_DOMAIN_INIT)) 2569 #define CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS ( \ 2570 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \ 2571 BIT_ULL(POWER_DOMAIN_INIT)) 2572 #define CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS ( \ 2573 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \ 2574 BIT_ULL(POWER_DOMAIN_INIT)) 2575 #define CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS ( \ 2576 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \ 2577 BIT_ULL(POWER_DOMAIN_INIT)) 2578 #define CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS ( \ 2579 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \ 2580 BIT_ULL(POWER_DOMAIN_INIT)) 2581 #define CNL_DISPLAY_AUX_A_POWER_DOMAINS ( \ 2582 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2583 BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \ 2584 BIT_ULL(POWER_DOMAIN_INIT)) 2585 #define CNL_DISPLAY_AUX_B_POWER_DOMAINS ( \ 2586 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2587 BIT_ULL(POWER_DOMAIN_INIT)) 2588 #define CNL_DISPLAY_AUX_C_POWER_DOMAINS ( \ 2589 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2590 BIT_ULL(POWER_DOMAIN_INIT)) 2591 #define CNL_DISPLAY_AUX_D_POWER_DOMAINS ( \ 2592 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2593 BIT_ULL(POWER_DOMAIN_INIT)) 2594 #define CNL_DISPLAY_AUX_F_POWER_DOMAINS ( \ 2595 BIT_ULL(POWER_DOMAIN_AUX_F) | \ 2596 BIT_ULL(POWER_DOMAIN_INIT)) 2597 #define CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS ( \ 2598 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) | \ 2599 BIT_ULL(POWER_DOMAIN_INIT)) 2600 #define CNL_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2601 CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ 2602 BIT_ULL(POWER_DOMAIN_GT_IRQ) | \ 2603 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2604 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2605 BIT_ULL(POWER_DOMAIN_INIT)) 2606 2607 /* 2608 * ICL PW_0/PG_0 domains (HW/DMC control): 2609 * - PCI 2610 * - clocks except port PLL 2611 * - central power except FBC 2612 * - shared functions except pipe interrupts, pipe MBUS, DBUF registers 2613 * ICL PW_1/PG_1 domains (HW/DMC control): 2614 * - DBUF function 2615 * - PIPE_A and its planes, except VGA 2616 * - transcoder EDP + PSR 2617 * - transcoder DSI 2618 * - DDI_A 2619 * - FBC 2620 */ 2621 #define ICL_PW_4_POWER_DOMAINS ( \ 2622 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2623 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2624 BIT_ULL(POWER_DOMAIN_INIT)) 2625 /* VDSC/joining */ 2626 #define ICL_PW_3_POWER_DOMAINS ( \ 2627 ICL_PW_4_POWER_DOMAINS | \ 2628 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2629 BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \ 2630 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2631 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2632 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2633 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \ 2634 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \ 2635 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2636 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \ 2637 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \ 2638 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2639 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2640 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2641 BIT_ULL(POWER_DOMAIN_AUX_E) | \ 2642 BIT_ULL(POWER_DOMAIN_AUX_F) | \ 2643 BIT_ULL(POWER_DOMAIN_AUX_C_TBT) | \ 2644 BIT_ULL(POWER_DOMAIN_AUX_D_TBT) | \ 2645 BIT_ULL(POWER_DOMAIN_AUX_E_TBT) | \ 2646 BIT_ULL(POWER_DOMAIN_AUX_F_TBT) | \ 2647 BIT_ULL(POWER_DOMAIN_VGA) | \ 2648 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2649 BIT_ULL(POWER_DOMAIN_INIT)) 2650 /* 2651 * - transcoder WD 2652 * - KVMR (HW control) 2653 */ 2654 #define ICL_PW_2_POWER_DOMAINS ( \ 2655 ICL_PW_3_POWER_DOMAINS | \ 2656 BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) | \ 2657 BIT_ULL(POWER_DOMAIN_INIT)) 2658 /* 2659 * - KVMR (HW control) 2660 */ 2661 #define ICL_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2662 ICL_PW_2_POWER_DOMAINS | \ 2663 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2664 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2665 BIT_ULL(POWER_DOMAIN_DPLL_DC_OFF) | \ 2666 BIT_ULL(POWER_DOMAIN_INIT)) 2667 2668 #define ICL_DDI_IO_A_POWER_DOMAINS ( \ 2669 BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO)) 2670 #define ICL_DDI_IO_B_POWER_DOMAINS ( \ 2671 BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO)) 2672 #define ICL_DDI_IO_C_POWER_DOMAINS ( \ 2673 BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO)) 2674 #define ICL_DDI_IO_D_POWER_DOMAINS ( \ 2675 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO)) 2676 #define ICL_DDI_IO_E_POWER_DOMAINS ( \ 2677 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO)) 2678 #define ICL_DDI_IO_F_POWER_DOMAINS ( \ 2679 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO)) 2680 2681 #define ICL_AUX_A_IO_POWER_DOMAINS ( \ 2682 BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \ 2683 BIT_ULL(POWER_DOMAIN_AUX_A)) 2684 #define ICL_AUX_B_IO_POWER_DOMAINS ( \ 2685 BIT_ULL(POWER_DOMAIN_AUX_B)) 2686 #define ICL_AUX_C_TC1_IO_POWER_DOMAINS ( \ 2687 BIT_ULL(POWER_DOMAIN_AUX_C)) 2688 #define ICL_AUX_D_TC2_IO_POWER_DOMAINS ( \ 2689 BIT_ULL(POWER_DOMAIN_AUX_D)) 2690 #define ICL_AUX_E_TC3_IO_POWER_DOMAINS ( \ 2691 BIT_ULL(POWER_DOMAIN_AUX_E)) 2692 #define ICL_AUX_F_TC4_IO_POWER_DOMAINS ( \ 2693 BIT_ULL(POWER_DOMAIN_AUX_F)) 2694 #define ICL_AUX_C_TBT1_IO_POWER_DOMAINS ( \ 2695 BIT_ULL(POWER_DOMAIN_AUX_C_TBT)) 2696 #define ICL_AUX_D_TBT2_IO_POWER_DOMAINS ( \ 2697 BIT_ULL(POWER_DOMAIN_AUX_D_TBT)) 2698 #define ICL_AUX_E_TBT3_IO_POWER_DOMAINS ( \ 2699 BIT_ULL(POWER_DOMAIN_AUX_E_TBT)) 2700 #define ICL_AUX_F_TBT4_IO_POWER_DOMAINS ( \ 2701 BIT_ULL(POWER_DOMAIN_AUX_F_TBT)) 2702 2703 #define TGL_PW_5_POWER_DOMAINS ( \ 2704 BIT_ULL(POWER_DOMAIN_PIPE_D) | \ 2705 BIT_ULL(POWER_DOMAIN_TRANSCODER_D) | \ 2706 BIT_ULL(POWER_DOMAIN_PIPE_D_PANEL_FITTER) | \ 2707 BIT_ULL(POWER_DOMAIN_INIT)) 2708 2709 #define TGL_PW_4_POWER_DOMAINS ( \ 2710 TGL_PW_5_POWER_DOMAINS | \ 2711 BIT_ULL(POWER_DOMAIN_PIPE_C) | \ 2712 BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \ 2713 BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \ 2714 BIT_ULL(POWER_DOMAIN_INIT)) 2715 2716 #define TGL_PW_3_POWER_DOMAINS ( \ 2717 TGL_PW_4_POWER_DOMAINS | \ 2718 BIT_ULL(POWER_DOMAIN_PIPE_B) | \ 2719 BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \ 2720 BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \ 2721 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \ 2722 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \ 2723 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \ 2724 BIT_ULL(POWER_DOMAIN_PORT_DDI_G_LANES) | \ 2725 BIT_ULL(POWER_DOMAIN_PORT_DDI_H_LANES) | \ 2726 BIT_ULL(POWER_DOMAIN_PORT_DDI_I_LANES) | \ 2727 BIT_ULL(POWER_DOMAIN_AUX_D) | \ 2728 BIT_ULL(POWER_DOMAIN_AUX_E) | \ 2729 BIT_ULL(POWER_DOMAIN_AUX_F) | \ 2730 BIT_ULL(POWER_DOMAIN_AUX_G) | \ 2731 BIT_ULL(POWER_DOMAIN_AUX_H) | \ 2732 BIT_ULL(POWER_DOMAIN_AUX_I) | \ 2733 BIT_ULL(POWER_DOMAIN_AUX_D_TBT) | \ 2734 BIT_ULL(POWER_DOMAIN_AUX_E_TBT) | \ 2735 BIT_ULL(POWER_DOMAIN_AUX_F_TBT) | \ 2736 BIT_ULL(POWER_DOMAIN_AUX_G_TBT) | \ 2737 BIT_ULL(POWER_DOMAIN_AUX_H_TBT) | \ 2738 BIT_ULL(POWER_DOMAIN_AUX_I_TBT) | \ 2739 BIT_ULL(POWER_DOMAIN_VGA) | \ 2740 BIT_ULL(POWER_DOMAIN_AUDIO) | \ 2741 BIT_ULL(POWER_DOMAIN_INIT)) 2742 2743 #define TGL_PW_2_POWER_DOMAINS ( \ 2744 TGL_PW_3_POWER_DOMAINS | \ 2745 BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) | \ 2746 BIT_ULL(POWER_DOMAIN_INIT)) 2747 2748 #define TGL_DISPLAY_DC_OFF_POWER_DOMAINS ( \ 2749 TGL_PW_3_POWER_DOMAINS | \ 2750 BIT_ULL(POWER_DOMAIN_MODESET) | \ 2751 BIT_ULL(POWER_DOMAIN_AUX_A) | \ 2752 BIT_ULL(POWER_DOMAIN_AUX_B) | \ 2753 BIT_ULL(POWER_DOMAIN_AUX_C) | \ 2754 BIT_ULL(POWER_DOMAIN_INIT)) 2755 2756 #define TGL_DDI_IO_D_TC1_POWER_DOMAINS ( \ 2757 BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO)) 2758 #define TGL_DDI_IO_E_TC2_POWER_DOMAINS ( \ 2759 BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO)) 2760 #define TGL_DDI_IO_F_TC3_POWER_DOMAINS ( \ 2761 BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO)) 2762 #define TGL_DDI_IO_G_TC4_POWER_DOMAINS ( \ 2763 BIT_ULL(POWER_DOMAIN_PORT_DDI_G_IO)) 2764 #define TGL_DDI_IO_H_TC5_POWER_DOMAINS ( \ 2765 BIT_ULL(POWER_DOMAIN_PORT_DDI_H_IO)) 2766 #define TGL_DDI_IO_I_TC6_POWER_DOMAINS ( \ 2767 BIT_ULL(POWER_DOMAIN_PORT_DDI_I_IO)) 2768 2769 #define TGL_AUX_A_IO_POWER_DOMAINS ( \ 2770 BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \ 2771 BIT_ULL(POWER_DOMAIN_AUX_A)) 2772 #define TGL_AUX_B_IO_POWER_DOMAINS ( \ 2773 BIT_ULL(POWER_DOMAIN_AUX_B)) 2774 #define TGL_AUX_C_IO_POWER_DOMAINS ( \ 2775 BIT_ULL(POWER_DOMAIN_AUX_C)) 2776 #define TGL_AUX_D_TC1_IO_POWER_DOMAINS ( \ 2777 BIT_ULL(POWER_DOMAIN_AUX_D)) 2778 #define TGL_AUX_E_TC2_IO_POWER_DOMAINS ( \ 2779 BIT_ULL(POWER_DOMAIN_AUX_E)) 2780 #define TGL_AUX_F_TC3_IO_POWER_DOMAINS ( \ 2781 BIT_ULL(POWER_DOMAIN_AUX_F)) 2782 #define TGL_AUX_G_TC4_IO_POWER_DOMAINS ( \ 2783 BIT_ULL(POWER_DOMAIN_AUX_G)) 2784 #define TGL_AUX_H_TC5_IO_POWER_DOMAINS ( \ 2785 BIT_ULL(POWER_DOMAIN_AUX_H)) 2786 #define TGL_AUX_I_TC6_IO_POWER_DOMAINS ( \ 2787 BIT_ULL(POWER_DOMAIN_AUX_I)) 2788 #define TGL_AUX_D_TBT1_IO_POWER_DOMAINS ( \ 2789 BIT_ULL(POWER_DOMAIN_AUX_D_TBT)) 2790 #define TGL_AUX_E_TBT2_IO_POWER_DOMAINS ( \ 2791 BIT_ULL(POWER_DOMAIN_AUX_E_TBT)) 2792 #define TGL_AUX_F_TBT3_IO_POWER_DOMAINS ( \ 2793 BIT_ULL(POWER_DOMAIN_AUX_F_TBT)) 2794 #define TGL_AUX_G_TBT4_IO_POWER_DOMAINS ( \ 2795 BIT_ULL(POWER_DOMAIN_AUX_G_TBT)) 2796 #define TGL_AUX_H_TBT5_IO_POWER_DOMAINS ( \ 2797 BIT_ULL(POWER_DOMAIN_AUX_H_TBT)) 2798 #define TGL_AUX_I_TBT6_IO_POWER_DOMAINS ( \ 2799 BIT_ULL(POWER_DOMAIN_AUX_I_TBT)) 2800 2801 static const struct i915_power_well_ops i9xx_always_on_power_well_ops = { 2802 .sync_hw = i9xx_power_well_sync_hw_noop, 2803 .enable = i9xx_always_on_power_well_noop, 2804 .disable = i9xx_always_on_power_well_noop, 2805 .is_enabled = i9xx_always_on_power_well_enabled, 2806 }; 2807 2808 static const struct i915_power_well_ops chv_pipe_power_well_ops = { 2809 .sync_hw = chv_pipe_power_well_sync_hw, 2810 .enable = chv_pipe_power_well_enable, 2811 .disable = chv_pipe_power_well_disable, 2812 .is_enabled = chv_pipe_power_well_enabled, 2813 }; 2814 2815 static const struct i915_power_well_ops chv_dpio_cmn_power_well_ops = { 2816 .sync_hw = i9xx_power_well_sync_hw_noop, 2817 .enable = chv_dpio_cmn_power_well_enable, 2818 .disable = chv_dpio_cmn_power_well_disable, 2819 .is_enabled = vlv_power_well_enabled, 2820 }; 2821 2822 static const struct i915_power_well_desc i9xx_always_on_power_well[] = { 2823 { 2824 .name = "always-on", 2825 .always_on = true, 2826 .domains = POWER_DOMAIN_MASK, 2827 .ops = &i9xx_always_on_power_well_ops, 2828 .id = DISP_PW_ID_NONE, 2829 }, 2830 }; 2831 2832 static const struct i915_power_well_ops i830_pipes_power_well_ops = { 2833 .sync_hw = i830_pipes_power_well_sync_hw, 2834 .enable = i830_pipes_power_well_enable, 2835 .disable = i830_pipes_power_well_disable, 2836 .is_enabled = i830_pipes_power_well_enabled, 2837 }; 2838 2839 static const struct i915_power_well_desc i830_power_wells[] = { 2840 { 2841 .name = "always-on", 2842 .always_on = true, 2843 .domains = POWER_DOMAIN_MASK, 2844 .ops = &i9xx_always_on_power_well_ops, 2845 .id = DISP_PW_ID_NONE, 2846 }, 2847 { 2848 .name = "pipes", 2849 .domains = I830_PIPES_POWER_DOMAINS, 2850 .ops = &i830_pipes_power_well_ops, 2851 .id = DISP_PW_ID_NONE, 2852 }, 2853 }; 2854 2855 static const struct i915_power_well_ops hsw_power_well_ops = { 2856 .sync_hw = hsw_power_well_sync_hw, 2857 .enable = hsw_power_well_enable, 2858 .disable = hsw_power_well_disable, 2859 .is_enabled = hsw_power_well_enabled, 2860 }; 2861 2862 static const struct i915_power_well_ops gen9_dc_off_power_well_ops = { 2863 .sync_hw = i9xx_power_well_sync_hw_noop, 2864 .enable = gen9_dc_off_power_well_enable, 2865 .disable = gen9_dc_off_power_well_disable, 2866 .is_enabled = gen9_dc_off_power_well_enabled, 2867 }; 2868 2869 static const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops = { 2870 .sync_hw = i9xx_power_well_sync_hw_noop, 2871 .enable = bxt_dpio_cmn_power_well_enable, 2872 .disable = bxt_dpio_cmn_power_well_disable, 2873 .is_enabled = bxt_dpio_cmn_power_well_enabled, 2874 }; 2875 2876 static const struct i915_power_well_regs hsw_power_well_regs = { 2877 .bios = HSW_PWR_WELL_CTL1, 2878 .driver = HSW_PWR_WELL_CTL2, 2879 .kvmr = HSW_PWR_WELL_CTL3, 2880 .debug = HSW_PWR_WELL_CTL4, 2881 }; 2882 2883 static const struct i915_power_well_desc hsw_power_wells[] = { 2884 { 2885 .name = "always-on", 2886 .always_on = true, 2887 .domains = POWER_DOMAIN_MASK, 2888 .ops = &i9xx_always_on_power_well_ops, 2889 .id = DISP_PW_ID_NONE, 2890 }, 2891 { 2892 .name = "display", 2893 .domains = HSW_DISPLAY_POWER_DOMAINS, 2894 .ops = &hsw_power_well_ops, 2895 .id = HSW_DISP_PW_GLOBAL, 2896 { 2897 .hsw.regs = &hsw_power_well_regs, 2898 .hsw.idx = HSW_PW_CTL_IDX_GLOBAL, 2899 .hsw.has_vga = true, 2900 }, 2901 }, 2902 }; 2903 2904 static const struct i915_power_well_desc bdw_power_wells[] = { 2905 { 2906 .name = "always-on", 2907 .always_on = true, 2908 .domains = POWER_DOMAIN_MASK, 2909 .ops = &i9xx_always_on_power_well_ops, 2910 .id = DISP_PW_ID_NONE, 2911 }, 2912 { 2913 .name = "display", 2914 .domains = BDW_DISPLAY_POWER_DOMAINS, 2915 .ops = &hsw_power_well_ops, 2916 .id = HSW_DISP_PW_GLOBAL, 2917 { 2918 .hsw.regs = &hsw_power_well_regs, 2919 .hsw.idx = HSW_PW_CTL_IDX_GLOBAL, 2920 .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C), 2921 .hsw.has_vga = true, 2922 }, 2923 }, 2924 }; 2925 2926 static const struct i915_power_well_ops vlv_display_power_well_ops = { 2927 .sync_hw = i9xx_power_well_sync_hw_noop, 2928 .enable = vlv_display_power_well_enable, 2929 .disable = vlv_display_power_well_disable, 2930 .is_enabled = vlv_power_well_enabled, 2931 }; 2932 2933 static const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops = { 2934 .sync_hw = i9xx_power_well_sync_hw_noop, 2935 .enable = vlv_dpio_cmn_power_well_enable, 2936 .disable = vlv_dpio_cmn_power_well_disable, 2937 .is_enabled = vlv_power_well_enabled, 2938 }; 2939 2940 static const struct i915_power_well_ops vlv_dpio_power_well_ops = { 2941 .sync_hw = i9xx_power_well_sync_hw_noop, 2942 .enable = vlv_power_well_enable, 2943 .disable = vlv_power_well_disable, 2944 .is_enabled = vlv_power_well_enabled, 2945 }; 2946 2947 static const struct i915_power_well_desc vlv_power_wells[] = { 2948 { 2949 .name = "always-on", 2950 .always_on = true, 2951 .domains = POWER_DOMAIN_MASK, 2952 .ops = &i9xx_always_on_power_well_ops, 2953 .id = DISP_PW_ID_NONE, 2954 }, 2955 { 2956 .name = "display", 2957 .domains = VLV_DISPLAY_POWER_DOMAINS, 2958 .ops = &vlv_display_power_well_ops, 2959 .id = VLV_DISP_PW_DISP2D, 2960 { 2961 .vlv.idx = PUNIT_PWGT_IDX_DISP2D, 2962 }, 2963 }, 2964 { 2965 .name = "dpio-tx-b-01", 2966 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS | 2967 VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS | 2968 VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS | 2969 VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS, 2970 .ops = &vlv_dpio_power_well_ops, 2971 .id = DISP_PW_ID_NONE, 2972 { 2973 .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01, 2974 }, 2975 }, 2976 { 2977 .name = "dpio-tx-b-23", 2978 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS | 2979 VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS | 2980 VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS | 2981 VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS, 2982 .ops = &vlv_dpio_power_well_ops, 2983 .id = DISP_PW_ID_NONE, 2984 { 2985 .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23, 2986 }, 2987 }, 2988 { 2989 .name = "dpio-tx-c-01", 2990 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS | 2991 VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS | 2992 VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS | 2993 VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS, 2994 .ops = &vlv_dpio_power_well_ops, 2995 .id = DISP_PW_ID_NONE, 2996 { 2997 .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01, 2998 }, 2999 }, 3000 { 3001 .name = "dpio-tx-c-23", 3002 .domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS | 3003 VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS | 3004 VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS | 3005 VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS, 3006 .ops = &vlv_dpio_power_well_ops, 3007 .id = DISP_PW_ID_NONE, 3008 { 3009 .vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23, 3010 }, 3011 }, 3012 { 3013 .name = "dpio-common", 3014 .domains = VLV_DPIO_CMN_BC_POWER_DOMAINS, 3015 .ops = &vlv_dpio_cmn_power_well_ops, 3016 .id = VLV_DISP_PW_DPIO_CMN_BC, 3017 { 3018 .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC, 3019 }, 3020 }, 3021 }; 3022 3023 static const struct i915_power_well_desc chv_power_wells[] = { 3024 { 3025 .name = "always-on", 3026 .always_on = true, 3027 .domains = POWER_DOMAIN_MASK, 3028 .ops = &i9xx_always_on_power_well_ops, 3029 .id = DISP_PW_ID_NONE, 3030 }, 3031 { 3032 .name = "display", 3033 /* 3034 * Pipe A power well is the new disp2d well. Pipe B and C 3035 * power wells don't actually exist. Pipe A power well is 3036 * required for any pipe to work. 3037 */ 3038 .domains = CHV_DISPLAY_POWER_DOMAINS, 3039 .ops = &chv_pipe_power_well_ops, 3040 .id = DISP_PW_ID_NONE, 3041 }, 3042 { 3043 .name = "dpio-common-bc", 3044 .domains = CHV_DPIO_CMN_BC_POWER_DOMAINS, 3045 .ops = &chv_dpio_cmn_power_well_ops, 3046 .id = VLV_DISP_PW_DPIO_CMN_BC, 3047 { 3048 .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC, 3049 }, 3050 }, 3051 { 3052 .name = "dpio-common-d", 3053 .domains = CHV_DPIO_CMN_D_POWER_DOMAINS, 3054 .ops = &chv_dpio_cmn_power_well_ops, 3055 .id = CHV_DISP_PW_DPIO_CMN_D, 3056 { 3057 .vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_D, 3058 }, 3059 }, 3060 }; 3061 3062 bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv, 3063 enum i915_power_well_id power_well_id) 3064 { 3065 struct i915_power_well *power_well; 3066 bool ret; 3067 3068 power_well = lookup_power_well(dev_priv, power_well_id); 3069 ret = power_well->desc->ops->is_enabled(dev_priv, power_well); 3070 3071 return ret; 3072 } 3073 3074 static const struct i915_power_well_desc skl_power_wells[] = { 3075 { 3076 .name = "always-on", 3077 .always_on = true, 3078 .domains = POWER_DOMAIN_MASK, 3079 .ops = &i9xx_always_on_power_well_ops, 3080 .id = DISP_PW_ID_NONE, 3081 }, 3082 { 3083 .name = "power well 1", 3084 /* Handled by the DMC firmware */ 3085 .always_on = true, 3086 .domains = 0, 3087 .ops = &hsw_power_well_ops, 3088 .id = SKL_DISP_PW_1, 3089 { 3090 .hsw.regs = &hsw_power_well_regs, 3091 .hsw.idx = SKL_PW_CTL_IDX_PW_1, 3092 .hsw.has_fuses = true, 3093 }, 3094 }, 3095 { 3096 .name = "MISC IO power well", 3097 /* Handled by the DMC firmware */ 3098 .always_on = true, 3099 .domains = 0, 3100 .ops = &hsw_power_well_ops, 3101 .id = SKL_DISP_PW_MISC_IO, 3102 { 3103 .hsw.regs = &hsw_power_well_regs, 3104 .hsw.idx = SKL_PW_CTL_IDX_MISC_IO, 3105 }, 3106 }, 3107 { 3108 .name = "DC off", 3109 .domains = SKL_DISPLAY_DC_OFF_POWER_DOMAINS, 3110 .ops = &gen9_dc_off_power_well_ops, 3111 .id = SKL_DISP_DC_OFF, 3112 }, 3113 { 3114 .name = "power well 2", 3115 .domains = SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS, 3116 .ops = &hsw_power_well_ops, 3117 .id = SKL_DISP_PW_2, 3118 { 3119 .hsw.regs = &hsw_power_well_regs, 3120 .hsw.idx = SKL_PW_CTL_IDX_PW_2, 3121 .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C), 3122 .hsw.has_vga = true, 3123 .hsw.has_fuses = true, 3124 }, 3125 }, 3126 { 3127 .name = "DDI A/E IO power well", 3128 .domains = SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS, 3129 .ops = &hsw_power_well_ops, 3130 .id = DISP_PW_ID_NONE, 3131 { 3132 .hsw.regs = &hsw_power_well_regs, 3133 .hsw.idx = SKL_PW_CTL_IDX_DDI_A_E, 3134 }, 3135 }, 3136 { 3137 .name = "DDI B IO power well", 3138 .domains = SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS, 3139 .ops = &hsw_power_well_ops, 3140 .id = DISP_PW_ID_NONE, 3141 { 3142 .hsw.regs = &hsw_power_well_regs, 3143 .hsw.idx = SKL_PW_CTL_IDX_DDI_B, 3144 }, 3145 }, 3146 { 3147 .name = "DDI C IO power well", 3148 .domains = SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS, 3149 .ops = &hsw_power_well_ops, 3150 .id = DISP_PW_ID_NONE, 3151 { 3152 .hsw.regs = &hsw_power_well_regs, 3153 .hsw.idx = SKL_PW_CTL_IDX_DDI_C, 3154 }, 3155 }, 3156 { 3157 .name = "DDI D IO power well", 3158 .domains = SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS, 3159 .ops = &hsw_power_well_ops, 3160 .id = DISP_PW_ID_NONE, 3161 { 3162 .hsw.regs = &hsw_power_well_regs, 3163 .hsw.idx = SKL_PW_CTL_IDX_DDI_D, 3164 }, 3165 }, 3166 }; 3167 3168 static const struct i915_power_well_desc bxt_power_wells[] = { 3169 { 3170 .name = "always-on", 3171 .always_on = true, 3172 .domains = POWER_DOMAIN_MASK, 3173 .ops = &i9xx_always_on_power_well_ops, 3174 .id = DISP_PW_ID_NONE, 3175 }, 3176 { 3177 .name = "power well 1", 3178 /* Handled by the DMC firmware */ 3179 .always_on = true, 3180 .domains = 0, 3181 .ops = &hsw_power_well_ops, 3182 .id = SKL_DISP_PW_1, 3183 { 3184 .hsw.regs = &hsw_power_well_regs, 3185 .hsw.idx = SKL_PW_CTL_IDX_PW_1, 3186 .hsw.has_fuses = true, 3187 }, 3188 }, 3189 { 3190 .name = "DC off", 3191 .domains = BXT_DISPLAY_DC_OFF_POWER_DOMAINS, 3192 .ops = &gen9_dc_off_power_well_ops, 3193 .id = SKL_DISP_DC_OFF, 3194 }, 3195 { 3196 .name = "power well 2", 3197 .domains = BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS, 3198 .ops = &hsw_power_well_ops, 3199 .id = SKL_DISP_PW_2, 3200 { 3201 .hsw.regs = &hsw_power_well_regs, 3202 .hsw.idx = SKL_PW_CTL_IDX_PW_2, 3203 .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C), 3204 .hsw.has_vga = true, 3205 .hsw.has_fuses = true, 3206 }, 3207 }, 3208 { 3209 .name = "dpio-common-a", 3210 .domains = BXT_DPIO_CMN_A_POWER_DOMAINS, 3211 .ops = &bxt_dpio_cmn_power_well_ops, 3212 .id = BXT_DISP_PW_DPIO_CMN_A, 3213 { 3214 .bxt.phy = DPIO_PHY1, 3215 }, 3216 }, 3217 { 3218 .name = "dpio-common-bc", 3219 .domains = BXT_DPIO_CMN_BC_POWER_DOMAINS, 3220 .ops = &bxt_dpio_cmn_power_well_ops, 3221 .id = VLV_DISP_PW_DPIO_CMN_BC, 3222 { 3223 .bxt.phy = DPIO_PHY0, 3224 }, 3225 }, 3226 }; 3227 3228 static const struct i915_power_well_desc glk_power_wells[] = { 3229 { 3230 .name = "always-on", 3231 .always_on = true, 3232 .domains = POWER_DOMAIN_MASK, 3233 .ops = &i9xx_always_on_power_well_ops, 3234 .id = DISP_PW_ID_NONE, 3235 }, 3236 { 3237 .name = "power well 1", 3238 /* Handled by the DMC firmware */ 3239 .always_on = true, 3240 .domains = 0, 3241 .ops = &hsw_power_well_ops, 3242 .id = SKL_DISP_PW_1, 3243 { 3244 .hsw.regs = &hsw_power_well_regs, 3245 .hsw.idx = SKL_PW_CTL_IDX_PW_1, 3246 .hsw.has_fuses = true, 3247 }, 3248 }, 3249 { 3250 .name = "DC off", 3251 .domains = GLK_DISPLAY_DC_OFF_POWER_DOMAINS, 3252 .ops = &gen9_dc_off_power_well_ops, 3253 .id = SKL_DISP_DC_OFF, 3254 }, 3255 { 3256 .name = "power well 2", 3257 .domains = GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS, 3258 .ops = &hsw_power_well_ops, 3259 .id = SKL_DISP_PW_2, 3260 { 3261 .hsw.regs = &hsw_power_well_regs, 3262 .hsw.idx = SKL_PW_CTL_IDX_PW_2, 3263 .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C), 3264 .hsw.has_vga = true, 3265 .hsw.has_fuses = true, 3266 }, 3267 }, 3268 { 3269 .name = "dpio-common-a", 3270 .domains = GLK_DPIO_CMN_A_POWER_DOMAINS, 3271 .ops = &bxt_dpio_cmn_power_well_ops, 3272 .id = BXT_DISP_PW_DPIO_CMN_A, 3273 { 3274 .bxt.phy = DPIO_PHY1, 3275 }, 3276 }, 3277 { 3278 .name = "dpio-common-b", 3279 .domains = GLK_DPIO_CMN_B_POWER_DOMAINS, 3280 .ops = &bxt_dpio_cmn_power_well_ops, 3281 .id = VLV_DISP_PW_DPIO_CMN_BC, 3282 { 3283 .bxt.phy = DPIO_PHY0, 3284 }, 3285 }, 3286 { 3287 .name = "dpio-common-c", 3288 .domains = GLK_DPIO_CMN_C_POWER_DOMAINS, 3289 .ops = &bxt_dpio_cmn_power_well_ops, 3290 .id = GLK_DISP_PW_DPIO_CMN_C, 3291 { 3292 .bxt.phy = DPIO_PHY2, 3293 }, 3294 }, 3295 { 3296 .name = "AUX A", 3297 .domains = GLK_DISPLAY_AUX_A_POWER_DOMAINS, 3298 .ops = &hsw_power_well_ops, 3299 .id = DISP_PW_ID_NONE, 3300 { 3301 .hsw.regs = &hsw_power_well_regs, 3302 .hsw.idx = GLK_PW_CTL_IDX_AUX_A, 3303 }, 3304 }, 3305 { 3306 .name = "AUX B", 3307 .domains = GLK_DISPLAY_AUX_B_POWER_DOMAINS, 3308 .ops = &hsw_power_well_ops, 3309 .id = DISP_PW_ID_NONE, 3310 { 3311 .hsw.regs = &hsw_power_well_regs, 3312 .hsw.idx = GLK_PW_CTL_IDX_AUX_B, 3313 }, 3314 }, 3315 { 3316 .name = "AUX C", 3317 .domains = GLK_DISPLAY_AUX_C_POWER_DOMAINS, 3318 .ops = &hsw_power_well_ops, 3319 .id = DISP_PW_ID_NONE, 3320 { 3321 .hsw.regs = &hsw_power_well_regs, 3322 .hsw.idx = GLK_PW_CTL_IDX_AUX_C, 3323 }, 3324 }, 3325 { 3326 .name = "DDI A IO power well", 3327 .domains = GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS, 3328 .ops = &hsw_power_well_ops, 3329 .id = DISP_PW_ID_NONE, 3330 { 3331 .hsw.regs = &hsw_power_well_regs, 3332 .hsw.idx = GLK_PW_CTL_IDX_DDI_A, 3333 }, 3334 }, 3335 { 3336 .name = "DDI B IO power well", 3337 .domains = GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS, 3338 .ops = &hsw_power_well_ops, 3339 .id = DISP_PW_ID_NONE, 3340 { 3341 .hsw.regs = &hsw_power_well_regs, 3342 .hsw.idx = SKL_PW_CTL_IDX_DDI_B, 3343 }, 3344 }, 3345 { 3346 .name = "DDI C IO power well", 3347 .domains = GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS, 3348 .ops = &hsw_power_well_ops, 3349 .id = DISP_PW_ID_NONE, 3350 { 3351 .hsw.regs = &hsw_power_well_regs, 3352 .hsw.idx = SKL_PW_CTL_IDX_DDI_C, 3353 }, 3354 }, 3355 }; 3356 3357 static const struct i915_power_well_desc cnl_power_wells[] = { 3358 { 3359 .name = "always-on", 3360 .always_on = true, 3361 .domains = POWER_DOMAIN_MASK, 3362 .ops = &i9xx_always_on_power_well_ops, 3363 .id = DISP_PW_ID_NONE, 3364 }, 3365 { 3366 .name = "power well 1", 3367 /* Handled by the DMC firmware */ 3368 .always_on = true, 3369 .domains = 0, 3370 .ops = &hsw_power_well_ops, 3371 .id = SKL_DISP_PW_1, 3372 { 3373 .hsw.regs = &hsw_power_well_regs, 3374 .hsw.idx = SKL_PW_CTL_IDX_PW_1, 3375 .hsw.has_fuses = true, 3376 }, 3377 }, 3378 { 3379 .name = "AUX A", 3380 .domains = CNL_DISPLAY_AUX_A_POWER_DOMAINS, 3381 .ops = &hsw_power_well_ops, 3382 .id = DISP_PW_ID_NONE, 3383 { 3384 .hsw.regs = &hsw_power_well_regs, 3385 .hsw.idx = GLK_PW_CTL_IDX_AUX_A, 3386 }, 3387 }, 3388 { 3389 .name = "AUX B", 3390 .domains = CNL_DISPLAY_AUX_B_POWER_DOMAINS, 3391 .ops = &hsw_power_well_ops, 3392 .id = DISP_PW_ID_NONE, 3393 { 3394 .hsw.regs = &hsw_power_well_regs, 3395 .hsw.idx = GLK_PW_CTL_IDX_AUX_B, 3396 }, 3397 }, 3398 { 3399 .name = "AUX C", 3400 .domains = CNL_DISPLAY_AUX_C_POWER_DOMAINS, 3401 .ops = &hsw_power_well_ops, 3402 .id = DISP_PW_ID_NONE, 3403 { 3404 .hsw.regs = &hsw_power_well_regs, 3405 .hsw.idx = GLK_PW_CTL_IDX_AUX_C, 3406 }, 3407 }, 3408 { 3409 .name = "AUX D", 3410 .domains = CNL_DISPLAY_AUX_D_POWER_DOMAINS, 3411 .ops = &hsw_power_well_ops, 3412 .id = DISP_PW_ID_NONE, 3413 { 3414 .hsw.regs = &hsw_power_well_regs, 3415 .hsw.idx = CNL_PW_CTL_IDX_AUX_D, 3416 }, 3417 }, 3418 { 3419 .name = "DC off", 3420 .domains = CNL_DISPLAY_DC_OFF_POWER_DOMAINS, 3421 .ops = &gen9_dc_off_power_well_ops, 3422 .id = SKL_DISP_DC_OFF, 3423 }, 3424 { 3425 .name = "power well 2", 3426 .domains = CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS, 3427 .ops = &hsw_power_well_ops, 3428 .id = SKL_DISP_PW_2, 3429 { 3430 .hsw.regs = &hsw_power_well_regs, 3431 .hsw.idx = SKL_PW_CTL_IDX_PW_2, 3432 .hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C), 3433 .hsw.has_vga = true, 3434 .hsw.has_fuses = true, 3435 }, 3436 }, 3437 { 3438 .name = "DDI A IO power well", 3439 .domains = CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS, 3440 .ops = &hsw_power_well_ops, 3441 .id = DISP_PW_ID_NONE, 3442 { 3443 .hsw.regs = &hsw_power_well_regs, 3444 .hsw.idx = GLK_PW_CTL_IDX_DDI_A, 3445 }, 3446 }, 3447 { 3448 .name = "DDI B IO power well", 3449 .domains = CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS, 3450 .ops = &hsw_power_well_ops, 3451 .id = DISP_PW_ID_NONE, 3452 { 3453 .hsw.regs = &hsw_power_well_regs, 3454 .hsw.idx = SKL_PW_CTL_IDX_DDI_B, 3455 }, 3456 }, 3457 { 3458 .name = "DDI C IO power well", 3459 .domains = CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS, 3460 .ops = &hsw_power_well_ops, 3461 .id = DISP_PW_ID_NONE, 3462 { 3463 .hsw.regs = &hsw_power_well_regs, 3464 .hsw.idx = SKL_PW_CTL_IDX_DDI_C, 3465 }, 3466 }, 3467 { 3468 .name = "DDI D IO power well", 3469 .domains = CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS, 3470 .ops = &hsw_power_well_ops, 3471 .id = DISP_PW_ID_NONE, 3472 { 3473 .hsw.regs = &hsw_power_well_regs, 3474 .hsw.idx = SKL_PW_CTL_IDX_DDI_D, 3475 }, 3476 }, 3477 { 3478 .name = "DDI F IO power well", 3479 .domains = CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS, 3480 .ops = &hsw_power_well_ops, 3481 .id = DISP_PW_ID_NONE, 3482 { 3483 .hsw.regs = &hsw_power_well_regs, 3484 .hsw.idx = CNL_PW_CTL_IDX_DDI_F, 3485 }, 3486 }, 3487 { 3488 .name = "AUX F", 3489 .domains = CNL_DISPLAY_AUX_F_POWER_DOMAINS, 3490 .ops = &hsw_power_well_ops, 3491 .id = DISP_PW_ID_NONE, 3492 { 3493 .hsw.regs = &hsw_power_well_regs, 3494 .hsw.idx = CNL_PW_CTL_IDX_AUX_F, 3495 }, 3496 }, 3497 }; 3498 3499 static const struct i915_power_well_ops icl_combo_phy_aux_power_well_ops = { 3500 .sync_hw = hsw_power_well_sync_hw, 3501 .enable = icl_combo_phy_aux_power_well_enable, 3502 .disable = icl_combo_phy_aux_power_well_disable, 3503 .is_enabled = hsw_power_well_enabled, 3504 }; 3505 3506 static const struct i915_power_well_ops icl_tc_phy_aux_power_well_ops = { 3507 .sync_hw = hsw_power_well_sync_hw, 3508 .enable = icl_tc_phy_aux_power_well_enable, 3509 .disable = icl_tc_phy_aux_power_well_disable, 3510 .is_enabled = hsw_power_well_enabled, 3511 }; 3512 3513 static const struct i915_power_well_regs icl_aux_power_well_regs = { 3514 .bios = ICL_PWR_WELL_CTL_AUX1, 3515 .driver = ICL_PWR_WELL_CTL_AUX2, 3516 .debug = ICL_PWR_WELL_CTL_AUX4, 3517 }; 3518 3519 static const struct i915_power_well_regs icl_ddi_power_well_regs = { 3520 .bios = ICL_PWR_WELL_CTL_DDI1, 3521 .driver = ICL_PWR_WELL_CTL_DDI2, 3522 .debug = ICL_PWR_WELL_CTL_DDI4, 3523 }; 3524 3525 static const struct i915_power_well_desc icl_power_wells[] = { 3526 { 3527 .name = "always-on", 3528 .always_on = true, 3529 .domains = POWER_DOMAIN_MASK, 3530 .ops = &i9xx_always_on_power_well_ops, 3531 .id = DISP_PW_ID_NONE, 3532 }, 3533 { 3534 .name = "power well 1", 3535 /* Handled by the DMC firmware */ 3536 .always_on = true, 3537 .domains = 0, 3538 .ops = &hsw_power_well_ops, 3539 .id = SKL_DISP_PW_1, 3540 { 3541 .hsw.regs = &hsw_power_well_regs, 3542 .hsw.idx = ICL_PW_CTL_IDX_PW_1, 3543 .hsw.has_fuses = true, 3544 }, 3545 }, 3546 { 3547 .name = "DC off", 3548 .domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS, 3549 .ops = &gen9_dc_off_power_well_ops, 3550 .id = SKL_DISP_DC_OFF, 3551 }, 3552 { 3553 .name = "power well 2", 3554 .domains = ICL_PW_2_POWER_DOMAINS, 3555 .ops = &hsw_power_well_ops, 3556 .id = SKL_DISP_PW_2, 3557 { 3558 .hsw.regs = &hsw_power_well_regs, 3559 .hsw.idx = ICL_PW_CTL_IDX_PW_2, 3560 .hsw.has_fuses = true, 3561 }, 3562 }, 3563 { 3564 .name = "power well 3", 3565 .domains = ICL_PW_3_POWER_DOMAINS, 3566 .ops = &hsw_power_well_ops, 3567 .id = DISP_PW_ID_NONE, 3568 { 3569 .hsw.regs = &hsw_power_well_regs, 3570 .hsw.idx = ICL_PW_CTL_IDX_PW_3, 3571 .hsw.irq_pipe_mask = BIT(PIPE_B), 3572 .hsw.has_vga = true, 3573 .hsw.has_fuses = true, 3574 }, 3575 }, 3576 { 3577 .name = "DDI A IO", 3578 .domains = ICL_DDI_IO_A_POWER_DOMAINS, 3579 .ops = &hsw_power_well_ops, 3580 .id = DISP_PW_ID_NONE, 3581 { 3582 .hsw.regs = &icl_ddi_power_well_regs, 3583 .hsw.idx = ICL_PW_CTL_IDX_DDI_A, 3584 }, 3585 }, 3586 { 3587 .name = "DDI B IO", 3588 .domains = ICL_DDI_IO_B_POWER_DOMAINS, 3589 .ops = &hsw_power_well_ops, 3590 .id = DISP_PW_ID_NONE, 3591 { 3592 .hsw.regs = &icl_ddi_power_well_regs, 3593 .hsw.idx = ICL_PW_CTL_IDX_DDI_B, 3594 }, 3595 }, 3596 { 3597 .name = "DDI C IO", 3598 .domains = ICL_DDI_IO_C_POWER_DOMAINS, 3599 .ops = &hsw_power_well_ops, 3600 .id = DISP_PW_ID_NONE, 3601 { 3602 .hsw.regs = &icl_ddi_power_well_regs, 3603 .hsw.idx = ICL_PW_CTL_IDX_DDI_C, 3604 }, 3605 }, 3606 { 3607 .name = "DDI D IO", 3608 .domains = ICL_DDI_IO_D_POWER_DOMAINS, 3609 .ops = &hsw_power_well_ops, 3610 .id = DISP_PW_ID_NONE, 3611 { 3612 .hsw.regs = &icl_ddi_power_well_regs, 3613 .hsw.idx = ICL_PW_CTL_IDX_DDI_D, 3614 }, 3615 }, 3616 { 3617 .name = "DDI E IO", 3618 .domains = ICL_DDI_IO_E_POWER_DOMAINS, 3619 .ops = &hsw_power_well_ops, 3620 .id = DISP_PW_ID_NONE, 3621 { 3622 .hsw.regs = &icl_ddi_power_well_regs, 3623 .hsw.idx = ICL_PW_CTL_IDX_DDI_E, 3624 }, 3625 }, 3626 { 3627 .name = "DDI F IO", 3628 .domains = ICL_DDI_IO_F_POWER_DOMAINS, 3629 .ops = &hsw_power_well_ops, 3630 .id = DISP_PW_ID_NONE, 3631 { 3632 .hsw.regs = &icl_ddi_power_well_regs, 3633 .hsw.idx = ICL_PW_CTL_IDX_DDI_F, 3634 }, 3635 }, 3636 { 3637 .name = "AUX A", 3638 .domains = ICL_AUX_A_IO_POWER_DOMAINS, 3639 .ops = &icl_combo_phy_aux_power_well_ops, 3640 .id = DISP_PW_ID_NONE, 3641 { 3642 .hsw.regs = &icl_aux_power_well_regs, 3643 .hsw.idx = ICL_PW_CTL_IDX_AUX_A, 3644 }, 3645 }, 3646 { 3647 .name = "AUX B", 3648 .domains = ICL_AUX_B_IO_POWER_DOMAINS, 3649 .ops = &icl_combo_phy_aux_power_well_ops, 3650 .id = DISP_PW_ID_NONE, 3651 { 3652 .hsw.regs = &icl_aux_power_well_regs, 3653 .hsw.idx = ICL_PW_CTL_IDX_AUX_B, 3654 }, 3655 }, 3656 { 3657 .name = "AUX C TC1", 3658 .domains = ICL_AUX_C_TC1_IO_POWER_DOMAINS, 3659 .ops = &icl_tc_phy_aux_power_well_ops, 3660 .id = DISP_PW_ID_NONE, 3661 { 3662 .hsw.regs = &icl_aux_power_well_regs, 3663 .hsw.idx = ICL_PW_CTL_IDX_AUX_C, 3664 .hsw.is_tc_tbt = false, 3665 }, 3666 }, 3667 { 3668 .name = "AUX D TC2", 3669 .domains = ICL_AUX_D_TC2_IO_POWER_DOMAINS, 3670 .ops = &icl_tc_phy_aux_power_well_ops, 3671 .id = DISP_PW_ID_NONE, 3672 { 3673 .hsw.regs = &icl_aux_power_well_regs, 3674 .hsw.idx = ICL_PW_CTL_IDX_AUX_D, 3675 .hsw.is_tc_tbt = false, 3676 }, 3677 }, 3678 { 3679 .name = "AUX E TC3", 3680 .domains = ICL_AUX_E_TC3_IO_POWER_DOMAINS, 3681 .ops = &icl_tc_phy_aux_power_well_ops, 3682 .id = DISP_PW_ID_NONE, 3683 { 3684 .hsw.regs = &icl_aux_power_well_regs, 3685 .hsw.idx = ICL_PW_CTL_IDX_AUX_E, 3686 .hsw.is_tc_tbt = false, 3687 }, 3688 }, 3689 { 3690 .name = "AUX F TC4", 3691 .domains = ICL_AUX_F_TC4_IO_POWER_DOMAINS, 3692 .ops = &icl_tc_phy_aux_power_well_ops, 3693 .id = DISP_PW_ID_NONE, 3694 { 3695 .hsw.regs = &icl_aux_power_well_regs, 3696 .hsw.idx = ICL_PW_CTL_IDX_AUX_F, 3697 .hsw.is_tc_tbt = false, 3698 }, 3699 }, 3700 { 3701 .name = "AUX C TBT1", 3702 .domains = ICL_AUX_C_TBT1_IO_POWER_DOMAINS, 3703 .ops = &icl_tc_phy_aux_power_well_ops, 3704 .id = DISP_PW_ID_NONE, 3705 { 3706 .hsw.regs = &icl_aux_power_well_regs, 3707 .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT1, 3708 .hsw.is_tc_tbt = true, 3709 }, 3710 }, 3711 { 3712 .name = "AUX D TBT2", 3713 .domains = ICL_AUX_D_TBT2_IO_POWER_DOMAINS, 3714 .ops = &icl_tc_phy_aux_power_well_ops, 3715 .id = DISP_PW_ID_NONE, 3716 { 3717 .hsw.regs = &icl_aux_power_well_regs, 3718 .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT2, 3719 .hsw.is_tc_tbt = true, 3720 }, 3721 }, 3722 { 3723 .name = "AUX E TBT3", 3724 .domains = ICL_AUX_E_TBT3_IO_POWER_DOMAINS, 3725 .ops = &icl_tc_phy_aux_power_well_ops, 3726 .id = DISP_PW_ID_NONE, 3727 { 3728 .hsw.regs = &icl_aux_power_well_regs, 3729 .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT3, 3730 .hsw.is_tc_tbt = true, 3731 }, 3732 }, 3733 { 3734 .name = "AUX F TBT4", 3735 .domains = ICL_AUX_F_TBT4_IO_POWER_DOMAINS, 3736 .ops = &icl_tc_phy_aux_power_well_ops, 3737 .id = DISP_PW_ID_NONE, 3738 { 3739 .hsw.regs = &icl_aux_power_well_regs, 3740 .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT4, 3741 .hsw.is_tc_tbt = true, 3742 }, 3743 }, 3744 { 3745 .name = "power well 4", 3746 .domains = ICL_PW_4_POWER_DOMAINS, 3747 .ops = &hsw_power_well_ops, 3748 .id = DISP_PW_ID_NONE, 3749 { 3750 .hsw.regs = &hsw_power_well_regs, 3751 .hsw.idx = ICL_PW_CTL_IDX_PW_4, 3752 .hsw.has_fuses = true, 3753 .hsw.irq_pipe_mask = BIT(PIPE_C), 3754 }, 3755 }, 3756 }; 3757 3758 static const struct i915_power_well_desc ehl_power_wells[] = { 3759 { 3760 .name = "always-on", 3761 .always_on = true, 3762 .domains = POWER_DOMAIN_MASK, 3763 .ops = &i9xx_always_on_power_well_ops, 3764 .id = DISP_PW_ID_NONE, 3765 }, 3766 { 3767 .name = "power well 1", 3768 /* Handled by the DMC firmware */ 3769 .always_on = true, 3770 .domains = 0, 3771 .ops = &hsw_power_well_ops, 3772 .id = SKL_DISP_PW_1, 3773 { 3774 .hsw.regs = &hsw_power_well_regs, 3775 .hsw.idx = ICL_PW_CTL_IDX_PW_1, 3776 .hsw.has_fuses = true, 3777 }, 3778 }, 3779 { 3780 .name = "DC off", 3781 .domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS, 3782 .ops = &gen9_dc_off_power_well_ops, 3783 .id = SKL_DISP_DC_OFF, 3784 }, 3785 { 3786 .name = "power well 2", 3787 .domains = ICL_PW_2_POWER_DOMAINS, 3788 .ops = &hsw_power_well_ops, 3789 .id = SKL_DISP_PW_2, 3790 { 3791 .hsw.regs = &hsw_power_well_regs, 3792 .hsw.idx = ICL_PW_CTL_IDX_PW_2, 3793 .hsw.has_fuses = true, 3794 }, 3795 }, 3796 { 3797 .name = "power well 3", 3798 .domains = ICL_PW_3_POWER_DOMAINS, 3799 .ops = &hsw_power_well_ops, 3800 .id = DISP_PW_ID_NONE, 3801 { 3802 .hsw.regs = &hsw_power_well_regs, 3803 .hsw.idx = ICL_PW_CTL_IDX_PW_3, 3804 .hsw.irq_pipe_mask = BIT(PIPE_B), 3805 .hsw.has_vga = true, 3806 .hsw.has_fuses = true, 3807 }, 3808 }, 3809 { 3810 .name = "DDI A IO", 3811 .domains = ICL_DDI_IO_A_POWER_DOMAINS, 3812 .ops = &hsw_power_well_ops, 3813 .id = DISP_PW_ID_NONE, 3814 { 3815 .hsw.regs = &icl_ddi_power_well_regs, 3816 .hsw.idx = ICL_PW_CTL_IDX_DDI_A, 3817 }, 3818 }, 3819 { 3820 .name = "DDI B IO", 3821 .domains = ICL_DDI_IO_B_POWER_DOMAINS, 3822 .ops = &hsw_power_well_ops, 3823 .id = DISP_PW_ID_NONE, 3824 { 3825 .hsw.regs = &icl_ddi_power_well_regs, 3826 .hsw.idx = ICL_PW_CTL_IDX_DDI_B, 3827 }, 3828 }, 3829 { 3830 .name = "DDI C IO", 3831 .domains = ICL_DDI_IO_C_POWER_DOMAINS, 3832 .ops = &hsw_power_well_ops, 3833 .id = DISP_PW_ID_NONE, 3834 { 3835 .hsw.regs = &icl_ddi_power_well_regs, 3836 .hsw.idx = ICL_PW_CTL_IDX_DDI_C, 3837 }, 3838 }, 3839 { 3840 .name = "DDI D IO", 3841 .domains = ICL_DDI_IO_D_POWER_DOMAINS, 3842 .ops = &hsw_power_well_ops, 3843 .id = DISP_PW_ID_NONE, 3844 { 3845 .hsw.regs = &icl_ddi_power_well_regs, 3846 .hsw.idx = ICL_PW_CTL_IDX_DDI_D, 3847 }, 3848 }, 3849 { 3850 .name = "AUX A", 3851 .domains = ICL_AUX_A_IO_POWER_DOMAINS, 3852 .ops = &hsw_power_well_ops, 3853 .id = DISP_PW_ID_NONE, 3854 { 3855 .hsw.regs = &icl_aux_power_well_regs, 3856 .hsw.idx = ICL_PW_CTL_IDX_AUX_A, 3857 }, 3858 }, 3859 { 3860 .name = "AUX B", 3861 .domains = ICL_AUX_B_IO_POWER_DOMAINS, 3862 .ops = &hsw_power_well_ops, 3863 .id = DISP_PW_ID_NONE, 3864 { 3865 .hsw.regs = &icl_aux_power_well_regs, 3866 .hsw.idx = ICL_PW_CTL_IDX_AUX_B, 3867 }, 3868 }, 3869 { 3870 .name = "AUX C", 3871 .domains = ICL_AUX_C_TC1_IO_POWER_DOMAINS, 3872 .ops = &hsw_power_well_ops, 3873 .id = DISP_PW_ID_NONE, 3874 { 3875 .hsw.regs = &icl_aux_power_well_regs, 3876 .hsw.idx = ICL_PW_CTL_IDX_AUX_C, 3877 }, 3878 }, 3879 { 3880 .name = "AUX D", 3881 .domains = ICL_AUX_D_TC2_IO_POWER_DOMAINS, 3882 .ops = &hsw_power_well_ops, 3883 .id = DISP_PW_ID_NONE, 3884 { 3885 .hsw.regs = &icl_aux_power_well_regs, 3886 .hsw.idx = ICL_PW_CTL_IDX_AUX_D, 3887 }, 3888 }, 3889 { 3890 .name = "power well 4", 3891 .domains = ICL_PW_4_POWER_DOMAINS, 3892 .ops = &hsw_power_well_ops, 3893 .id = DISP_PW_ID_NONE, 3894 { 3895 .hsw.regs = &hsw_power_well_regs, 3896 .hsw.idx = ICL_PW_CTL_IDX_PW_4, 3897 .hsw.has_fuses = true, 3898 .hsw.irq_pipe_mask = BIT(PIPE_C), 3899 }, 3900 }, 3901 }; 3902 3903 static const struct i915_power_well_desc tgl_power_wells[] = { 3904 { 3905 .name = "always-on", 3906 .always_on = true, 3907 .domains = POWER_DOMAIN_MASK, 3908 .ops = &i9xx_always_on_power_well_ops, 3909 .id = DISP_PW_ID_NONE, 3910 }, 3911 { 3912 .name = "power well 1", 3913 /* Handled by the DMC firmware */ 3914 .always_on = true, 3915 .domains = 0, 3916 .ops = &hsw_power_well_ops, 3917 .id = SKL_DISP_PW_1, 3918 { 3919 .hsw.regs = &hsw_power_well_regs, 3920 .hsw.idx = ICL_PW_CTL_IDX_PW_1, 3921 .hsw.has_fuses = true, 3922 }, 3923 }, 3924 { 3925 .name = "DC off", 3926 .domains = TGL_DISPLAY_DC_OFF_POWER_DOMAINS, 3927 .ops = &gen9_dc_off_power_well_ops, 3928 .id = SKL_DISP_DC_OFF, 3929 }, 3930 { 3931 .name = "power well 2", 3932 .domains = TGL_PW_2_POWER_DOMAINS, 3933 .ops = &hsw_power_well_ops, 3934 .id = SKL_DISP_PW_2, 3935 { 3936 .hsw.regs = &hsw_power_well_regs, 3937 .hsw.idx = ICL_PW_CTL_IDX_PW_2, 3938 .hsw.has_fuses = true, 3939 }, 3940 }, 3941 { 3942 .name = "power well 3", 3943 .domains = TGL_PW_3_POWER_DOMAINS, 3944 .ops = &hsw_power_well_ops, 3945 .id = TGL_DISP_PW_3, 3946 { 3947 .hsw.regs = &hsw_power_well_regs, 3948 .hsw.idx = ICL_PW_CTL_IDX_PW_3, 3949 .hsw.irq_pipe_mask = BIT(PIPE_B), 3950 .hsw.has_vga = true, 3951 .hsw.has_fuses = true, 3952 }, 3953 }, 3954 { 3955 .name = "DDI A IO", 3956 .domains = ICL_DDI_IO_A_POWER_DOMAINS, 3957 .ops = &hsw_power_well_ops, 3958 .id = DISP_PW_ID_NONE, 3959 { 3960 .hsw.regs = &icl_ddi_power_well_regs, 3961 .hsw.idx = ICL_PW_CTL_IDX_DDI_A, 3962 } 3963 }, 3964 { 3965 .name = "DDI B IO", 3966 .domains = ICL_DDI_IO_B_POWER_DOMAINS, 3967 .ops = &hsw_power_well_ops, 3968 .id = DISP_PW_ID_NONE, 3969 { 3970 .hsw.regs = &icl_ddi_power_well_regs, 3971 .hsw.idx = ICL_PW_CTL_IDX_DDI_B, 3972 } 3973 }, 3974 { 3975 .name = "DDI C IO", 3976 .domains = ICL_DDI_IO_C_POWER_DOMAINS, 3977 .ops = &hsw_power_well_ops, 3978 .id = DISP_PW_ID_NONE, 3979 { 3980 .hsw.regs = &icl_ddi_power_well_regs, 3981 .hsw.idx = ICL_PW_CTL_IDX_DDI_C, 3982 } 3983 }, 3984 { 3985 .name = "DDI D TC1 IO", 3986 .domains = TGL_DDI_IO_D_TC1_POWER_DOMAINS, 3987 .ops = &hsw_power_well_ops, 3988 .id = DISP_PW_ID_NONE, 3989 { 3990 .hsw.regs = &icl_ddi_power_well_regs, 3991 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1, 3992 }, 3993 }, 3994 { 3995 .name = "DDI E TC2 IO", 3996 .domains = TGL_DDI_IO_E_TC2_POWER_DOMAINS, 3997 .ops = &hsw_power_well_ops, 3998 .id = DISP_PW_ID_NONE, 3999 { 4000 .hsw.regs = &icl_ddi_power_well_regs, 4001 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2, 4002 }, 4003 }, 4004 { 4005 .name = "DDI F TC3 IO", 4006 .domains = TGL_DDI_IO_F_TC3_POWER_DOMAINS, 4007 .ops = &hsw_power_well_ops, 4008 .id = DISP_PW_ID_NONE, 4009 { 4010 .hsw.regs = &icl_ddi_power_well_regs, 4011 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC3, 4012 }, 4013 }, 4014 { 4015 .name = "DDI G TC4 IO", 4016 .domains = TGL_DDI_IO_G_TC4_POWER_DOMAINS, 4017 .ops = &hsw_power_well_ops, 4018 .id = DISP_PW_ID_NONE, 4019 { 4020 .hsw.regs = &icl_ddi_power_well_regs, 4021 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC4, 4022 }, 4023 }, 4024 { 4025 .name = "DDI H TC5 IO", 4026 .domains = TGL_DDI_IO_H_TC5_POWER_DOMAINS, 4027 .ops = &hsw_power_well_ops, 4028 .id = DISP_PW_ID_NONE, 4029 { 4030 .hsw.regs = &icl_ddi_power_well_regs, 4031 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC5, 4032 }, 4033 }, 4034 { 4035 .name = "DDI I TC6 IO", 4036 .domains = TGL_DDI_IO_I_TC6_POWER_DOMAINS, 4037 .ops = &hsw_power_well_ops, 4038 .id = DISP_PW_ID_NONE, 4039 { 4040 .hsw.regs = &icl_ddi_power_well_regs, 4041 .hsw.idx = TGL_PW_CTL_IDX_DDI_TC6, 4042 }, 4043 }, 4044 { 4045 .name = "AUX A", 4046 .domains = TGL_AUX_A_IO_POWER_DOMAINS, 4047 .ops = &hsw_power_well_ops, 4048 .id = DISP_PW_ID_NONE, 4049 { 4050 .hsw.regs = &icl_aux_power_well_regs, 4051 .hsw.idx = ICL_PW_CTL_IDX_AUX_A, 4052 }, 4053 }, 4054 { 4055 .name = "AUX B", 4056 .domains = TGL_AUX_B_IO_POWER_DOMAINS, 4057 .ops = &hsw_power_well_ops, 4058 .id = DISP_PW_ID_NONE, 4059 { 4060 .hsw.regs = &icl_aux_power_well_regs, 4061 .hsw.idx = ICL_PW_CTL_IDX_AUX_B, 4062 }, 4063 }, 4064 { 4065 .name = "AUX C", 4066 .domains = TGL_AUX_C_IO_POWER_DOMAINS, 4067 .ops = &hsw_power_well_ops, 4068 .id = DISP_PW_ID_NONE, 4069 { 4070 .hsw.regs = &icl_aux_power_well_regs, 4071 .hsw.idx = ICL_PW_CTL_IDX_AUX_C, 4072 }, 4073 }, 4074 { 4075 .name = "AUX D TC1", 4076 .domains = TGL_AUX_D_TC1_IO_POWER_DOMAINS, 4077 .ops = &icl_tc_phy_aux_power_well_ops, 4078 .id = DISP_PW_ID_NONE, 4079 { 4080 .hsw.regs = &icl_aux_power_well_regs, 4081 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1, 4082 .hsw.is_tc_tbt = false, 4083 }, 4084 }, 4085 { 4086 .name = "AUX E TC2", 4087 .domains = TGL_AUX_E_TC2_IO_POWER_DOMAINS, 4088 .ops = &icl_tc_phy_aux_power_well_ops, 4089 .id = DISP_PW_ID_NONE, 4090 { 4091 .hsw.regs = &icl_aux_power_well_regs, 4092 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2, 4093 .hsw.is_tc_tbt = false, 4094 }, 4095 }, 4096 { 4097 .name = "AUX F TC3", 4098 .domains = TGL_AUX_F_TC3_IO_POWER_DOMAINS, 4099 .ops = &icl_tc_phy_aux_power_well_ops, 4100 .id = DISP_PW_ID_NONE, 4101 { 4102 .hsw.regs = &icl_aux_power_well_regs, 4103 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC3, 4104 .hsw.is_tc_tbt = false, 4105 }, 4106 }, 4107 { 4108 .name = "AUX G TC4", 4109 .domains = TGL_AUX_G_TC4_IO_POWER_DOMAINS, 4110 .ops = &icl_tc_phy_aux_power_well_ops, 4111 .id = DISP_PW_ID_NONE, 4112 { 4113 .hsw.regs = &icl_aux_power_well_regs, 4114 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC4, 4115 .hsw.is_tc_tbt = false, 4116 }, 4117 }, 4118 { 4119 .name = "AUX H TC5", 4120 .domains = TGL_AUX_H_TC5_IO_POWER_DOMAINS, 4121 .ops = &icl_tc_phy_aux_power_well_ops, 4122 .id = DISP_PW_ID_NONE, 4123 { 4124 .hsw.regs = &icl_aux_power_well_regs, 4125 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC5, 4126 .hsw.is_tc_tbt = false, 4127 }, 4128 }, 4129 { 4130 .name = "AUX I TC6", 4131 .domains = TGL_AUX_I_TC6_IO_POWER_DOMAINS, 4132 .ops = &icl_tc_phy_aux_power_well_ops, 4133 .id = DISP_PW_ID_NONE, 4134 { 4135 .hsw.regs = &icl_aux_power_well_regs, 4136 .hsw.idx = TGL_PW_CTL_IDX_AUX_TC6, 4137 .hsw.is_tc_tbt = false, 4138 }, 4139 }, 4140 { 4141 .name = "AUX D TBT1", 4142 .domains = TGL_AUX_D_TBT1_IO_POWER_DOMAINS, 4143 .ops = &icl_tc_phy_aux_power_well_ops, 4144 .id = DISP_PW_ID_NONE, 4145 { 4146 .hsw.regs = &icl_aux_power_well_regs, 4147 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT1, 4148 .hsw.is_tc_tbt = true, 4149 }, 4150 }, 4151 { 4152 .name = "AUX E TBT2", 4153 .domains = TGL_AUX_E_TBT2_IO_POWER_DOMAINS, 4154 .ops = &icl_tc_phy_aux_power_well_ops, 4155 .id = DISP_PW_ID_NONE, 4156 { 4157 .hsw.regs = &icl_aux_power_well_regs, 4158 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT2, 4159 .hsw.is_tc_tbt = true, 4160 }, 4161 }, 4162 { 4163 .name = "AUX F TBT3", 4164 .domains = TGL_AUX_F_TBT3_IO_POWER_DOMAINS, 4165 .ops = &icl_tc_phy_aux_power_well_ops, 4166 .id = DISP_PW_ID_NONE, 4167 { 4168 .hsw.regs = &icl_aux_power_well_regs, 4169 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT3, 4170 .hsw.is_tc_tbt = true, 4171 }, 4172 }, 4173 { 4174 .name = "AUX G TBT4", 4175 .domains = TGL_AUX_G_TBT4_IO_POWER_DOMAINS, 4176 .ops = &icl_tc_phy_aux_power_well_ops, 4177 .id = DISP_PW_ID_NONE, 4178 { 4179 .hsw.regs = &icl_aux_power_well_regs, 4180 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT4, 4181 .hsw.is_tc_tbt = true, 4182 }, 4183 }, 4184 { 4185 .name = "AUX H TBT5", 4186 .domains = TGL_AUX_H_TBT5_IO_POWER_DOMAINS, 4187 .ops = &icl_tc_phy_aux_power_well_ops, 4188 .id = DISP_PW_ID_NONE, 4189 { 4190 .hsw.regs = &icl_aux_power_well_regs, 4191 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT5, 4192 .hsw.is_tc_tbt = true, 4193 }, 4194 }, 4195 { 4196 .name = "AUX I TBT6", 4197 .domains = TGL_AUX_I_TBT6_IO_POWER_DOMAINS, 4198 .ops = &icl_tc_phy_aux_power_well_ops, 4199 .id = DISP_PW_ID_NONE, 4200 { 4201 .hsw.regs = &icl_aux_power_well_regs, 4202 .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT6, 4203 .hsw.is_tc_tbt = true, 4204 }, 4205 }, 4206 { 4207 .name = "power well 4", 4208 .domains = TGL_PW_4_POWER_DOMAINS, 4209 .ops = &hsw_power_well_ops, 4210 .id = DISP_PW_ID_NONE, 4211 { 4212 .hsw.regs = &hsw_power_well_regs, 4213 .hsw.idx = ICL_PW_CTL_IDX_PW_4, 4214 .hsw.has_fuses = true, 4215 .hsw.irq_pipe_mask = BIT(PIPE_C), 4216 } 4217 }, 4218 { 4219 .name = "power well 5", 4220 .domains = TGL_PW_5_POWER_DOMAINS, 4221 .ops = &hsw_power_well_ops, 4222 .id = DISP_PW_ID_NONE, 4223 { 4224 .hsw.regs = &hsw_power_well_regs, 4225 .hsw.idx = TGL_PW_CTL_IDX_PW_5, 4226 .hsw.has_fuses = true, 4227 .hsw.irq_pipe_mask = BIT(PIPE_D), 4228 }, 4229 }, 4230 }; 4231 4232 static int 4233 sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv, 4234 int disable_power_well) 4235 { 4236 if (disable_power_well >= 0) 4237 return !!disable_power_well; 4238 4239 return 1; 4240 } 4241 4242 static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv, 4243 int enable_dc) 4244 { 4245 u32 mask; 4246 int requested_dc; 4247 int max_dc; 4248 4249 if (INTEL_GEN(dev_priv) >= 12) { 4250 max_dc = 4; 4251 /* 4252 * DC9 has a separate HW flow from the rest of the DC states, 4253 * not depending on the DMC firmware. It's needed by system 4254 * suspend/resume, so allow it unconditionally. 4255 */ 4256 mask = DC_STATE_EN_DC9; 4257 } else if (IS_GEN(dev_priv, 11)) { 4258 max_dc = 2; 4259 mask = DC_STATE_EN_DC9; 4260 } else if (IS_GEN(dev_priv, 10) || IS_GEN9_BC(dev_priv)) { 4261 max_dc = 2; 4262 mask = 0; 4263 } else if (IS_GEN9_LP(dev_priv)) { 4264 max_dc = 1; 4265 mask = DC_STATE_EN_DC9; 4266 } else { 4267 max_dc = 0; 4268 mask = 0; 4269 } 4270 4271 if (!i915_modparams.disable_power_well) 4272 max_dc = 0; 4273 4274 if (enable_dc >= 0 && enable_dc <= max_dc) { 4275 requested_dc = enable_dc; 4276 } else if (enable_dc == -1) { 4277 requested_dc = max_dc; 4278 } else if (enable_dc > max_dc && enable_dc <= 4) { 4279 drm_dbg_kms(&dev_priv->drm, 4280 "Adjusting requested max DC state (%d->%d)\n", 4281 enable_dc, max_dc); 4282 requested_dc = max_dc; 4283 } else { 4284 drm_err(&dev_priv->drm, 4285 "Unexpected value for enable_dc (%d)\n", enable_dc); 4286 requested_dc = max_dc; 4287 } 4288 4289 switch (requested_dc) { 4290 case 4: 4291 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6; 4292 break; 4293 case 3: 4294 mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC5; 4295 break; 4296 case 2: 4297 mask |= DC_STATE_EN_UPTO_DC6; 4298 break; 4299 case 1: 4300 mask |= DC_STATE_EN_UPTO_DC5; 4301 break; 4302 } 4303 4304 drm_dbg_kms(&dev_priv->drm, "Allowed DC state mask %02x\n", mask); 4305 4306 return mask; 4307 } 4308 4309 static int 4310 __set_power_wells(struct i915_power_domains *power_domains, 4311 const struct i915_power_well_desc *power_well_descs, 4312 int power_well_count) 4313 { 4314 u64 power_well_ids = 0; 4315 int i; 4316 4317 power_domains->power_well_count = power_well_count; 4318 power_domains->power_wells = 4319 kcalloc(power_well_count, 4320 sizeof(*power_domains->power_wells), 4321 GFP_KERNEL); 4322 if (!power_domains->power_wells) 4323 return -ENOMEM; 4324 4325 for (i = 0; i < power_well_count; i++) { 4326 enum i915_power_well_id id = power_well_descs[i].id; 4327 4328 power_domains->power_wells[i].desc = &power_well_descs[i]; 4329 4330 if (id == DISP_PW_ID_NONE) 4331 continue; 4332 4333 WARN_ON(id >= sizeof(power_well_ids) * 8); 4334 WARN_ON(power_well_ids & BIT_ULL(id)); 4335 power_well_ids |= BIT_ULL(id); 4336 } 4337 4338 return 0; 4339 } 4340 4341 #define set_power_wells(power_domains, __power_well_descs) \ 4342 __set_power_wells(power_domains, __power_well_descs, \ 4343 ARRAY_SIZE(__power_well_descs)) 4344 4345 /** 4346 * intel_power_domains_init - initializes the power domain structures 4347 * @dev_priv: i915 device instance 4348 * 4349 * Initializes the power domain structures for @dev_priv depending upon the 4350 * supported platform. 4351 */ 4352 int intel_power_domains_init(struct drm_i915_private *dev_priv) 4353 { 4354 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4355 int err; 4356 4357 i915_modparams.disable_power_well = 4358 sanitize_disable_power_well_option(dev_priv, 4359 i915_modparams.disable_power_well); 4360 dev_priv->csr.allowed_dc_mask = 4361 get_allowed_dc_mask(dev_priv, i915_modparams.enable_dc); 4362 4363 dev_priv->csr.target_dc_state = 4364 sanitize_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6); 4365 4366 BUILD_BUG_ON(POWER_DOMAIN_NUM > 64); 4367 4368 mutex_init(&power_domains->lock); 4369 4370 INIT_DELAYED_WORK(&power_domains->async_put_work, 4371 intel_display_power_put_async_work); 4372 4373 /* 4374 * The enabling order will be from lower to higher indexed wells, 4375 * the disabling order is reversed. 4376 */ 4377 if (IS_GEN(dev_priv, 12)) { 4378 err = set_power_wells(power_domains, tgl_power_wells); 4379 } else if (IS_ELKHARTLAKE(dev_priv)) { 4380 err = set_power_wells(power_domains, ehl_power_wells); 4381 } else if (IS_GEN(dev_priv, 11)) { 4382 err = set_power_wells(power_domains, icl_power_wells); 4383 } else if (IS_CANNONLAKE(dev_priv)) { 4384 err = set_power_wells(power_domains, cnl_power_wells); 4385 4386 /* 4387 * DDI and Aux IO are getting enabled for all ports 4388 * regardless the presence or use. So, in order to avoid 4389 * timeouts, lets remove them from the list 4390 * for the SKUs without port F. 4391 */ 4392 if (!IS_CNL_WITH_PORT_F(dev_priv)) 4393 power_domains->power_well_count -= 2; 4394 } else if (IS_GEMINILAKE(dev_priv)) { 4395 err = set_power_wells(power_domains, glk_power_wells); 4396 } else if (IS_BROXTON(dev_priv)) { 4397 err = set_power_wells(power_domains, bxt_power_wells); 4398 } else if (IS_GEN9_BC(dev_priv)) { 4399 err = set_power_wells(power_domains, skl_power_wells); 4400 } else if (IS_CHERRYVIEW(dev_priv)) { 4401 err = set_power_wells(power_domains, chv_power_wells); 4402 } else if (IS_BROADWELL(dev_priv)) { 4403 err = set_power_wells(power_domains, bdw_power_wells); 4404 } else if (IS_HASWELL(dev_priv)) { 4405 err = set_power_wells(power_domains, hsw_power_wells); 4406 } else if (IS_VALLEYVIEW(dev_priv)) { 4407 err = set_power_wells(power_domains, vlv_power_wells); 4408 } else if (IS_I830(dev_priv)) { 4409 err = set_power_wells(power_domains, i830_power_wells); 4410 } else { 4411 err = set_power_wells(power_domains, i9xx_always_on_power_well); 4412 } 4413 4414 return err; 4415 } 4416 4417 /** 4418 * intel_power_domains_cleanup - clean up power domains resources 4419 * @dev_priv: i915 device instance 4420 * 4421 * Release any resources acquired by intel_power_domains_init() 4422 */ 4423 void intel_power_domains_cleanup(struct drm_i915_private *dev_priv) 4424 { 4425 kfree(dev_priv->power_domains.power_wells); 4426 } 4427 4428 static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv) 4429 { 4430 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4431 struct i915_power_well *power_well; 4432 4433 mutex_lock(&power_domains->lock); 4434 for_each_power_well(dev_priv, power_well) { 4435 power_well->desc->ops->sync_hw(dev_priv, power_well); 4436 power_well->hw_enabled = 4437 power_well->desc->ops->is_enabled(dev_priv, power_well); 4438 } 4439 mutex_unlock(&power_domains->lock); 4440 } 4441 4442 static inline 4443 bool intel_dbuf_slice_set(struct drm_i915_private *dev_priv, 4444 i915_reg_t reg, bool enable) 4445 { 4446 u32 val, status; 4447 4448 val = intel_de_read(dev_priv, reg); 4449 val = enable ? (val | DBUF_POWER_REQUEST) : (val & ~DBUF_POWER_REQUEST); 4450 intel_de_write(dev_priv, reg, val); 4451 intel_de_posting_read(dev_priv, reg); 4452 udelay(10); 4453 4454 status = intel_de_read(dev_priv, reg) & DBUF_POWER_STATE; 4455 if ((enable && !status) || (!enable && status)) { 4456 drm_err(&dev_priv->drm, "DBus power %s timeout!\n", 4457 enable ? "enable" : "disable"); 4458 return false; 4459 } 4460 return true; 4461 } 4462 4463 static void gen9_dbuf_enable(struct drm_i915_private *dev_priv) 4464 { 4465 icl_dbuf_slices_update(dev_priv, BIT(DBUF_S1)); 4466 } 4467 4468 static void gen9_dbuf_disable(struct drm_i915_private *dev_priv) 4469 { 4470 icl_dbuf_slices_update(dev_priv, 0); 4471 } 4472 4473 void icl_dbuf_slices_update(struct drm_i915_private *dev_priv, 4474 u8 req_slices) 4475 { 4476 int i; 4477 int max_slices = INTEL_INFO(dev_priv)->num_supported_dbuf_slices; 4478 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4479 4480 drm_WARN(&dev_priv->drm, hweight8(req_slices) > max_slices, 4481 "Invalid number of dbuf slices requested\n"); 4482 4483 DRM_DEBUG_KMS("Updating dbuf slices to 0x%x\n", req_slices); 4484 4485 /* 4486 * Might be running this in parallel to gen9_dc_off_power_well_enable 4487 * being called from intel_dp_detect for instance, 4488 * which causes assertion triggered by race condition, 4489 * as gen9_assert_dbuf_enabled might preempt this when registers 4490 * were already updated, while dev_priv was not. 4491 */ 4492 mutex_lock(&power_domains->lock); 4493 4494 for (i = 0; i < max_slices; i++) { 4495 intel_dbuf_slice_set(dev_priv, 4496 DBUF_CTL_S(i), 4497 (req_slices & BIT(i)) != 0); 4498 } 4499 4500 dev_priv->enabled_dbuf_slices_mask = req_slices; 4501 4502 mutex_unlock(&power_domains->lock); 4503 } 4504 4505 static void icl_dbuf_enable(struct drm_i915_private *dev_priv) 4506 { 4507 skl_ddb_get_hw_state(dev_priv); 4508 /* 4509 * Just power up at least 1 slice, we will 4510 * figure out later which slices we have and what we need. 4511 */ 4512 icl_dbuf_slices_update(dev_priv, dev_priv->enabled_dbuf_slices_mask | 4513 BIT(DBUF_S1)); 4514 } 4515 4516 static void icl_dbuf_disable(struct drm_i915_private *dev_priv) 4517 { 4518 icl_dbuf_slices_update(dev_priv, 0); 4519 } 4520 4521 static void icl_mbus_init(struct drm_i915_private *dev_priv) 4522 { 4523 u32 mask, val; 4524 4525 mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK | 4526 MBUS_ABOX_BT_CREDIT_POOL2_MASK | 4527 MBUS_ABOX_B_CREDIT_MASK | 4528 MBUS_ABOX_BW_CREDIT_MASK; 4529 val = MBUS_ABOX_BT_CREDIT_POOL1(16) | 4530 MBUS_ABOX_BT_CREDIT_POOL2(16) | 4531 MBUS_ABOX_B_CREDIT(1) | 4532 MBUS_ABOX_BW_CREDIT(1); 4533 4534 intel_de_rmw(dev_priv, MBUS_ABOX_CTL, mask, val); 4535 if (INTEL_GEN(dev_priv) >= 12) { 4536 intel_de_rmw(dev_priv, MBUS_ABOX1_CTL, mask, val); 4537 intel_de_rmw(dev_priv, MBUS_ABOX2_CTL, mask, val); 4538 } 4539 } 4540 4541 static void hsw_assert_cdclk(struct drm_i915_private *dev_priv) 4542 { 4543 u32 val = intel_de_read(dev_priv, LCPLL_CTL); 4544 4545 /* 4546 * The LCPLL register should be turned on by the BIOS. For now 4547 * let's just check its state and print errors in case 4548 * something is wrong. Don't even try to turn it on. 4549 */ 4550 4551 if (val & LCPLL_CD_SOURCE_FCLK) 4552 drm_err(&dev_priv->drm, "CDCLK source is not LCPLL\n"); 4553 4554 if (val & LCPLL_PLL_DISABLE) 4555 drm_err(&dev_priv->drm, "LCPLL is disabled\n"); 4556 4557 if ((val & LCPLL_REF_MASK) != LCPLL_REF_NON_SSC) 4558 drm_err(&dev_priv->drm, "LCPLL not using non-SSC reference\n"); 4559 } 4560 4561 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv) 4562 { 4563 struct drm_device *dev = &dev_priv->drm; 4564 struct intel_crtc *crtc; 4565 4566 for_each_intel_crtc(dev, crtc) 4567 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n", 4568 pipe_name(crtc->pipe)); 4569 4570 I915_STATE_WARN(intel_de_read(dev_priv, HSW_PWR_WELL_CTL2), 4571 "Display power well on\n"); 4572 I915_STATE_WARN(intel_de_read(dev_priv, SPLL_CTL) & SPLL_PLL_ENABLE, 4573 "SPLL enabled\n"); 4574 I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(0)) & WRPLL_PLL_ENABLE, 4575 "WRPLL1 enabled\n"); 4576 I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(1)) & WRPLL_PLL_ENABLE, 4577 "WRPLL2 enabled\n"); 4578 I915_STATE_WARN(intel_de_read(dev_priv, PP_STATUS(0)) & PP_ON, 4579 "Panel power on\n"); 4580 I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE, 4581 "CPU PWM1 enabled\n"); 4582 if (IS_HASWELL(dev_priv)) 4583 I915_STATE_WARN(intel_de_read(dev_priv, HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE, 4584 "CPU PWM2 enabled\n"); 4585 I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE, 4586 "PCH PWM1 enabled\n"); 4587 I915_STATE_WARN(intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE, 4588 "Utility pin enabled\n"); 4589 I915_STATE_WARN(intel_de_read(dev_priv, PCH_GTC_CTL) & PCH_GTC_ENABLE, 4590 "PCH GTC enabled\n"); 4591 4592 /* 4593 * In theory we can still leave IRQs enabled, as long as only the HPD 4594 * interrupts remain enabled. We used to check for that, but since it's 4595 * gen-specific and since we only disable LCPLL after we fully disable 4596 * the interrupts, the check below should be enough. 4597 */ 4598 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n"); 4599 } 4600 4601 static u32 hsw_read_dcomp(struct drm_i915_private *dev_priv) 4602 { 4603 if (IS_HASWELL(dev_priv)) 4604 return intel_de_read(dev_priv, D_COMP_HSW); 4605 else 4606 return intel_de_read(dev_priv, D_COMP_BDW); 4607 } 4608 4609 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, u32 val) 4610 { 4611 if (IS_HASWELL(dev_priv)) { 4612 if (sandybridge_pcode_write(dev_priv, 4613 GEN6_PCODE_WRITE_D_COMP, val)) 4614 drm_dbg_kms(&dev_priv->drm, 4615 "Failed to write to D_COMP\n"); 4616 } else { 4617 intel_de_write(dev_priv, D_COMP_BDW, val); 4618 intel_de_posting_read(dev_priv, D_COMP_BDW); 4619 } 4620 } 4621 4622 /* 4623 * This function implements pieces of two sequences from BSpec: 4624 * - Sequence for display software to disable LCPLL 4625 * - Sequence for display software to allow package C8+ 4626 * The steps implemented here are just the steps that actually touch the LCPLL 4627 * register. Callers should take care of disabling all the display engine 4628 * functions, doing the mode unset, fixing interrupts, etc. 4629 */ 4630 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv, 4631 bool switch_to_fclk, bool allow_power_down) 4632 { 4633 u32 val; 4634 4635 assert_can_disable_lcpll(dev_priv); 4636 4637 val = intel_de_read(dev_priv, LCPLL_CTL); 4638 4639 if (switch_to_fclk) { 4640 val |= LCPLL_CD_SOURCE_FCLK; 4641 intel_de_write(dev_priv, LCPLL_CTL, val); 4642 4643 if (wait_for_us(intel_de_read(dev_priv, LCPLL_CTL) & 4644 LCPLL_CD_SOURCE_FCLK_DONE, 1)) 4645 drm_err(&dev_priv->drm, "Switching to FCLK failed\n"); 4646 4647 val = intel_de_read(dev_priv, LCPLL_CTL); 4648 } 4649 4650 val |= LCPLL_PLL_DISABLE; 4651 intel_de_write(dev_priv, LCPLL_CTL, val); 4652 intel_de_posting_read(dev_priv, LCPLL_CTL); 4653 4654 if (intel_de_wait_for_clear(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 1)) 4655 drm_err(&dev_priv->drm, "LCPLL still locked\n"); 4656 4657 val = hsw_read_dcomp(dev_priv); 4658 val |= D_COMP_COMP_DISABLE; 4659 hsw_write_dcomp(dev_priv, val); 4660 ndelay(100); 4661 4662 if (wait_for((hsw_read_dcomp(dev_priv) & 4663 D_COMP_RCOMP_IN_PROGRESS) == 0, 1)) 4664 drm_err(&dev_priv->drm, "D_COMP RCOMP still in progress\n"); 4665 4666 if (allow_power_down) { 4667 val = intel_de_read(dev_priv, LCPLL_CTL); 4668 val |= LCPLL_POWER_DOWN_ALLOW; 4669 intel_de_write(dev_priv, LCPLL_CTL, val); 4670 intel_de_posting_read(dev_priv, LCPLL_CTL); 4671 } 4672 } 4673 4674 /* 4675 * Fully restores LCPLL, disallowing power down and switching back to LCPLL 4676 * source. 4677 */ 4678 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv) 4679 { 4680 u32 val; 4681 4682 val = intel_de_read(dev_priv, LCPLL_CTL); 4683 4684 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK | 4685 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK) 4686 return; 4687 4688 /* 4689 * Make sure we're not on PC8 state before disabling PC8, otherwise 4690 * we'll hang the machine. To prevent PC8 state, just enable force_wake. 4691 */ 4692 intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL); 4693 4694 if (val & LCPLL_POWER_DOWN_ALLOW) { 4695 val &= ~LCPLL_POWER_DOWN_ALLOW; 4696 intel_de_write(dev_priv, LCPLL_CTL, val); 4697 intel_de_posting_read(dev_priv, LCPLL_CTL); 4698 } 4699 4700 val = hsw_read_dcomp(dev_priv); 4701 val |= D_COMP_COMP_FORCE; 4702 val &= ~D_COMP_COMP_DISABLE; 4703 hsw_write_dcomp(dev_priv, val); 4704 4705 val = intel_de_read(dev_priv, LCPLL_CTL); 4706 val &= ~LCPLL_PLL_DISABLE; 4707 intel_de_write(dev_priv, LCPLL_CTL, val); 4708 4709 if (intel_de_wait_for_set(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 5)) 4710 drm_err(&dev_priv->drm, "LCPLL not locked yet\n"); 4711 4712 if (val & LCPLL_CD_SOURCE_FCLK) { 4713 val = intel_de_read(dev_priv, LCPLL_CTL); 4714 val &= ~LCPLL_CD_SOURCE_FCLK; 4715 intel_de_write(dev_priv, LCPLL_CTL, val); 4716 4717 if (wait_for_us((intel_de_read(dev_priv, LCPLL_CTL) & 4718 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) 4719 drm_err(&dev_priv->drm, 4720 "Switching back to LCPLL failed\n"); 4721 } 4722 4723 intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL); 4724 4725 intel_update_cdclk(dev_priv); 4726 intel_dump_cdclk_config(&dev_priv->cdclk.hw, "Current CDCLK"); 4727 } 4728 4729 /* 4730 * Package states C8 and deeper are really deep PC states that can only be 4731 * reached when all the devices on the system allow it, so even if the graphics 4732 * device allows PC8+, it doesn't mean the system will actually get to these 4733 * states. Our driver only allows PC8+ when going into runtime PM. 4734 * 4735 * The requirements for PC8+ are that all the outputs are disabled, the power 4736 * well is disabled and most interrupts are disabled, and these are also 4737 * requirements for runtime PM. When these conditions are met, we manually do 4738 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk 4739 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard 4740 * hang the machine. 4741 * 4742 * When we really reach PC8 or deeper states (not just when we allow it) we lose 4743 * the state of some registers, so when we come back from PC8+ we need to 4744 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't 4745 * need to take care of the registers kept by RC6. Notice that this happens even 4746 * if we don't put the device in PCI D3 state (which is what currently happens 4747 * because of the runtime PM support). 4748 * 4749 * For more, read "Display Sequences for Package C8" on the hardware 4750 * documentation. 4751 */ 4752 static void hsw_enable_pc8(struct drm_i915_private *dev_priv) 4753 { 4754 u32 val; 4755 4756 drm_dbg_kms(&dev_priv->drm, "Enabling package C8+\n"); 4757 4758 if (HAS_PCH_LPT_LP(dev_priv)) { 4759 val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D); 4760 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; 4761 intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val); 4762 } 4763 4764 lpt_disable_clkout_dp(dev_priv); 4765 hsw_disable_lcpll(dev_priv, true, true); 4766 } 4767 4768 static void hsw_disable_pc8(struct drm_i915_private *dev_priv) 4769 { 4770 u32 val; 4771 4772 drm_dbg_kms(&dev_priv->drm, "Disabling package C8+\n"); 4773 4774 hsw_restore_lcpll(dev_priv); 4775 intel_init_pch_refclk(dev_priv); 4776 4777 if (HAS_PCH_LPT_LP(dev_priv)) { 4778 val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D); 4779 val |= PCH_LP_PARTITION_LEVEL_DISABLE; 4780 intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val); 4781 } 4782 } 4783 4784 static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv, 4785 bool enable) 4786 { 4787 i915_reg_t reg; 4788 u32 reset_bits, val; 4789 4790 if (IS_IVYBRIDGE(dev_priv)) { 4791 reg = GEN7_MSG_CTL; 4792 reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK; 4793 } else { 4794 reg = HSW_NDE_RSTWRN_OPT; 4795 reset_bits = RESET_PCH_HANDSHAKE_ENABLE; 4796 } 4797 4798 val = intel_de_read(dev_priv, reg); 4799 4800 if (enable) 4801 val |= reset_bits; 4802 else 4803 val &= ~reset_bits; 4804 4805 intel_de_write(dev_priv, reg, val); 4806 } 4807 4808 static void skl_display_core_init(struct drm_i915_private *dev_priv, 4809 bool resume) 4810 { 4811 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4812 struct i915_power_well *well; 4813 4814 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 4815 4816 /* enable PCH reset handshake */ 4817 intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); 4818 4819 /* enable PG1 and Misc I/O */ 4820 mutex_lock(&power_domains->lock); 4821 4822 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4823 intel_power_well_enable(dev_priv, well); 4824 4825 well = lookup_power_well(dev_priv, SKL_DISP_PW_MISC_IO); 4826 intel_power_well_enable(dev_priv, well); 4827 4828 mutex_unlock(&power_domains->lock); 4829 4830 intel_cdclk_init_hw(dev_priv); 4831 4832 gen9_dbuf_enable(dev_priv); 4833 4834 if (resume && dev_priv->csr.dmc_payload) 4835 intel_csr_load_program(dev_priv); 4836 } 4837 4838 static void skl_display_core_uninit(struct drm_i915_private *dev_priv) 4839 { 4840 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4841 struct i915_power_well *well; 4842 4843 gen9_disable_dc_states(dev_priv); 4844 4845 gen9_dbuf_disable(dev_priv); 4846 4847 intel_cdclk_uninit_hw(dev_priv); 4848 4849 /* The spec doesn't call for removing the reset handshake flag */ 4850 /* disable PG1 and Misc I/O */ 4851 4852 mutex_lock(&power_domains->lock); 4853 4854 /* 4855 * BSpec says to keep the MISC IO power well enabled here, only 4856 * remove our request for power well 1. 4857 * Note that even though the driver's request is removed power well 1 4858 * may stay enabled after this due to DMC's own request on it. 4859 */ 4860 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4861 intel_power_well_disable(dev_priv, well); 4862 4863 mutex_unlock(&power_domains->lock); 4864 4865 usleep_range(10, 30); /* 10 us delay per Bspec */ 4866 } 4867 4868 static void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume) 4869 { 4870 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4871 struct i915_power_well *well; 4872 4873 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 4874 4875 /* 4876 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT 4877 * or else the reset will hang because there is no PCH to respond. 4878 * Move the handshake programming to initialization sequence. 4879 * Previously was left up to BIOS. 4880 */ 4881 intel_pch_reset_handshake(dev_priv, false); 4882 4883 /* Enable PG1 */ 4884 mutex_lock(&power_domains->lock); 4885 4886 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4887 intel_power_well_enable(dev_priv, well); 4888 4889 mutex_unlock(&power_domains->lock); 4890 4891 intel_cdclk_init_hw(dev_priv); 4892 4893 gen9_dbuf_enable(dev_priv); 4894 4895 if (resume && dev_priv->csr.dmc_payload) 4896 intel_csr_load_program(dev_priv); 4897 } 4898 4899 static void bxt_display_core_uninit(struct drm_i915_private *dev_priv) 4900 { 4901 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4902 struct i915_power_well *well; 4903 4904 gen9_disable_dc_states(dev_priv); 4905 4906 gen9_dbuf_disable(dev_priv); 4907 4908 intel_cdclk_uninit_hw(dev_priv); 4909 4910 /* The spec doesn't call for removing the reset handshake flag */ 4911 4912 /* 4913 * Disable PW1 (PG1). 4914 * Note that even though the driver's request is removed power well 1 4915 * may stay enabled after this due to DMC's own request on it. 4916 */ 4917 mutex_lock(&power_domains->lock); 4918 4919 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4920 intel_power_well_disable(dev_priv, well); 4921 4922 mutex_unlock(&power_domains->lock); 4923 4924 usleep_range(10, 30); /* 10 us delay per Bspec */ 4925 } 4926 4927 static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume) 4928 { 4929 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4930 struct i915_power_well *well; 4931 4932 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 4933 4934 /* 1. Enable PCH Reset Handshake */ 4935 intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); 4936 4937 /* 2-3. */ 4938 intel_combo_phy_init(dev_priv); 4939 4940 /* 4941 * 4. Enable Power Well 1 (PG1). 4942 * The AUX IO power wells will be enabled on demand. 4943 */ 4944 mutex_lock(&power_domains->lock); 4945 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4946 intel_power_well_enable(dev_priv, well); 4947 mutex_unlock(&power_domains->lock); 4948 4949 /* 5. Enable CD clock */ 4950 intel_cdclk_init_hw(dev_priv); 4951 4952 /* 6. Enable DBUF */ 4953 gen9_dbuf_enable(dev_priv); 4954 4955 if (resume && dev_priv->csr.dmc_payload) 4956 intel_csr_load_program(dev_priv); 4957 } 4958 4959 static void cnl_display_core_uninit(struct drm_i915_private *dev_priv) 4960 { 4961 struct i915_power_domains *power_domains = &dev_priv->power_domains; 4962 struct i915_power_well *well; 4963 4964 gen9_disable_dc_states(dev_priv); 4965 4966 /* 1. Disable all display engine functions -> aready done */ 4967 4968 /* 2. Disable DBUF */ 4969 gen9_dbuf_disable(dev_priv); 4970 4971 /* 3. Disable CD clock */ 4972 intel_cdclk_uninit_hw(dev_priv); 4973 4974 /* 4975 * 4. Disable Power Well 1 (PG1). 4976 * The AUX IO power wells are toggled on demand, so they are already 4977 * disabled at this point. 4978 */ 4979 mutex_lock(&power_domains->lock); 4980 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 4981 intel_power_well_disable(dev_priv, well); 4982 mutex_unlock(&power_domains->lock); 4983 4984 usleep_range(10, 30); /* 10 us delay per Bspec */ 4985 4986 /* 5. */ 4987 intel_combo_phy_uninit(dev_priv); 4988 } 4989 4990 struct buddy_page_mask { 4991 u32 page_mask; 4992 u8 type; 4993 u8 num_channels; 4994 }; 4995 4996 static const struct buddy_page_mask tgl_buddy_page_masks[] = { 4997 { .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0xE }, 4998 { .num_channels = 1, .type = INTEL_DRAM_DDR4, .page_mask = 0xF }, 4999 { .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C }, 5000 { .num_channels = 2, .type = INTEL_DRAM_DDR4, .page_mask = 0x1F }, 5001 {} 5002 }; 5003 5004 static const struct buddy_page_mask wa_1409767108_buddy_page_masks[] = { 5005 { .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1 }, 5006 { .num_channels = 1, .type = INTEL_DRAM_DDR4, .page_mask = 0x1 }, 5007 { .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x3 }, 5008 { .num_channels = 2, .type = INTEL_DRAM_DDR4, .page_mask = 0x3 }, 5009 {} 5010 }; 5011 5012 static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv) 5013 { 5014 enum intel_dram_type type = dev_priv->dram_info.type; 5015 u8 num_channels = dev_priv->dram_info.num_channels; 5016 const struct buddy_page_mask *table; 5017 int i; 5018 5019 if (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_A0)) 5020 /* Wa_1409767108: tgl */ 5021 table = wa_1409767108_buddy_page_masks; 5022 else 5023 table = tgl_buddy_page_masks; 5024 5025 for (i = 0; table[i].page_mask != 0; i++) 5026 if (table[i].num_channels == num_channels && 5027 table[i].type == type) 5028 break; 5029 5030 if (table[i].page_mask == 0) { 5031 drm_dbg(&dev_priv->drm, 5032 "Unknown memory configuration; disabling address buddy logic.\n"); 5033 intel_de_write(dev_priv, BW_BUDDY1_CTL, BW_BUDDY_DISABLE); 5034 intel_de_write(dev_priv, BW_BUDDY2_CTL, BW_BUDDY_DISABLE); 5035 } else { 5036 intel_de_write(dev_priv, BW_BUDDY1_PAGE_MASK, 5037 table[i].page_mask); 5038 intel_de_write(dev_priv, BW_BUDDY2_PAGE_MASK, 5039 table[i].page_mask); 5040 5041 /* Wa_22010178259:tgl */ 5042 intel_de_rmw(dev_priv, BW_BUDDY1_CTL, 5043 BW_BUDDY_TLB_REQ_TIMER_MASK, 5044 REG_FIELD_PREP(BW_BUDDY_TLB_REQ_TIMER_MASK, 0x8)); 5045 intel_de_rmw(dev_priv, BW_BUDDY2_CTL, 5046 BW_BUDDY_TLB_REQ_TIMER_MASK, 5047 REG_FIELD_PREP(BW_BUDDY_TLB_REQ_TIMER_MASK, 0x8)); 5048 } 5049 } 5050 5051 static void icl_display_core_init(struct drm_i915_private *dev_priv, 5052 bool resume) 5053 { 5054 struct i915_power_domains *power_domains = &dev_priv->power_domains; 5055 struct i915_power_well *well; 5056 5057 gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); 5058 5059 /* 1. Enable PCH reset handshake. */ 5060 intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv)); 5061 5062 /* 2. Initialize all combo phys */ 5063 intel_combo_phy_init(dev_priv); 5064 5065 /* 5066 * 3. Enable Power Well 1 (PG1). 5067 * The AUX IO power wells will be enabled on demand. 5068 */ 5069 mutex_lock(&power_domains->lock); 5070 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 5071 intel_power_well_enable(dev_priv, well); 5072 mutex_unlock(&power_domains->lock); 5073 5074 /* 4. Enable CDCLK. */ 5075 intel_cdclk_init_hw(dev_priv); 5076 5077 /* 5. Enable DBUF. */ 5078 icl_dbuf_enable(dev_priv); 5079 5080 /* 6. Setup MBUS. */ 5081 icl_mbus_init(dev_priv); 5082 5083 /* 7. Program arbiter BW_BUDDY registers */ 5084 if (INTEL_GEN(dev_priv) >= 12) 5085 tgl_bw_buddy_init(dev_priv); 5086 5087 if (resume && dev_priv->csr.dmc_payload) 5088 intel_csr_load_program(dev_priv); 5089 } 5090 5091 static void icl_display_core_uninit(struct drm_i915_private *dev_priv) 5092 { 5093 struct i915_power_domains *power_domains = &dev_priv->power_domains; 5094 struct i915_power_well *well; 5095 5096 gen9_disable_dc_states(dev_priv); 5097 5098 /* 1. Disable all display engine functions -> aready done */ 5099 5100 /* 2. Disable DBUF */ 5101 icl_dbuf_disable(dev_priv); 5102 5103 /* 3. Disable CD clock */ 5104 intel_cdclk_uninit_hw(dev_priv); 5105 5106 /* 5107 * 4. Disable Power Well 1 (PG1). 5108 * The AUX IO power wells are toggled on demand, so they are already 5109 * disabled at this point. 5110 */ 5111 mutex_lock(&power_domains->lock); 5112 well = lookup_power_well(dev_priv, SKL_DISP_PW_1); 5113 intel_power_well_disable(dev_priv, well); 5114 mutex_unlock(&power_domains->lock); 5115 5116 /* 5. */ 5117 intel_combo_phy_uninit(dev_priv); 5118 } 5119 5120 static void chv_phy_control_init(struct drm_i915_private *dev_priv) 5121 { 5122 struct i915_power_well *cmn_bc = 5123 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC); 5124 struct i915_power_well *cmn_d = 5125 lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D); 5126 5127 /* 5128 * DISPLAY_PHY_CONTROL can get corrupted if read. As a 5129 * workaround never ever read DISPLAY_PHY_CONTROL, and 5130 * instead maintain a shadow copy ourselves. Use the actual 5131 * power well state and lane status to reconstruct the 5132 * expected initial value. 5133 */ 5134 dev_priv->chv_phy_control = 5135 PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY0) | 5136 PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY1) | 5137 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH0) | 5138 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH1) | 5139 PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY1, DPIO_CH0); 5140 5141 /* 5142 * If all lanes are disabled we leave the override disabled 5143 * with all power down bits cleared to match the state we 5144 * would use after disabling the port. Otherwise enable the 5145 * override and set the lane powerdown bits accding to the 5146 * current lane status. 5147 */ 5148 if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) { 5149 u32 status = intel_de_read(dev_priv, DPLL(PIPE_A)); 5150 unsigned int mask; 5151 5152 mask = status & DPLL_PORTB_READY_MASK; 5153 if (mask == 0xf) 5154 mask = 0x0; 5155 else 5156 dev_priv->chv_phy_control |= 5157 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0); 5158 5159 dev_priv->chv_phy_control |= 5160 PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH0); 5161 5162 mask = (status & DPLL_PORTC_READY_MASK) >> 4; 5163 if (mask == 0xf) 5164 mask = 0x0; 5165 else 5166 dev_priv->chv_phy_control |= 5167 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1); 5168 5169 dev_priv->chv_phy_control |= 5170 PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH1); 5171 5172 dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY0); 5173 5174 dev_priv->chv_phy_assert[DPIO_PHY0] = false; 5175 } else { 5176 dev_priv->chv_phy_assert[DPIO_PHY0] = true; 5177 } 5178 5179 if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) { 5180 u32 status = intel_de_read(dev_priv, DPIO_PHY_STATUS); 5181 unsigned int mask; 5182 5183 mask = status & DPLL_PORTD_READY_MASK; 5184 5185 if (mask == 0xf) 5186 mask = 0x0; 5187 else 5188 dev_priv->chv_phy_control |= 5189 PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0); 5190 5191 dev_priv->chv_phy_control |= 5192 PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY1, DPIO_CH0); 5193 5194 dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY1); 5195 5196 dev_priv->chv_phy_assert[DPIO_PHY1] = false; 5197 } else { 5198 dev_priv->chv_phy_assert[DPIO_PHY1] = true; 5199 } 5200 5201 drm_dbg_kms(&dev_priv->drm, "Initial PHY_CONTROL=0x%08x\n", 5202 dev_priv->chv_phy_control); 5203 5204 /* Defer application of initial phy_control to enabling the powerwell */ 5205 } 5206 5207 static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv) 5208 { 5209 struct i915_power_well *cmn = 5210 lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC); 5211 struct i915_power_well *disp2d = 5212 lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D); 5213 5214 /* If the display might be already active skip this */ 5215 if (cmn->desc->ops->is_enabled(dev_priv, cmn) && 5216 disp2d->desc->ops->is_enabled(dev_priv, disp2d) && 5217 intel_de_read(dev_priv, DPIO_CTL) & DPIO_CMNRST) 5218 return; 5219 5220 drm_dbg_kms(&dev_priv->drm, "toggling display PHY side reset\n"); 5221 5222 /* cmnlane needs DPLL registers */ 5223 disp2d->desc->ops->enable(dev_priv, disp2d); 5224 5225 /* 5226 * From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx: 5227 * Need to assert and de-assert PHY SB reset by gating the 5228 * common lane power, then un-gating it. 5229 * Simply ungating isn't enough to reset the PHY enough to get 5230 * ports and lanes running. 5231 */ 5232 cmn->desc->ops->disable(dev_priv, cmn); 5233 } 5234 5235 static bool vlv_punit_is_power_gated(struct drm_i915_private *dev_priv, u32 reg0) 5236 { 5237 bool ret; 5238 5239 vlv_punit_get(dev_priv); 5240 ret = (vlv_punit_read(dev_priv, reg0) & SSPM0_SSC_MASK) == SSPM0_SSC_PWR_GATE; 5241 vlv_punit_put(dev_priv); 5242 5243 return ret; 5244 } 5245 5246 static void assert_ved_power_gated(struct drm_i915_private *dev_priv) 5247 { 5248 drm_WARN(&dev_priv->drm, 5249 !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_VEDSSPM0), 5250 "VED not power gated\n"); 5251 } 5252 5253 static void assert_isp_power_gated(struct drm_i915_private *dev_priv) 5254 { 5255 static const struct pci_device_id isp_ids[] = { 5256 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f38)}, 5257 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x22b8)}, 5258 {} 5259 }; 5260 5261 drm_WARN(&dev_priv->drm, !pci_dev_present(isp_ids) && 5262 !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_ISPSSPM0), 5263 "ISP not power gated\n"); 5264 } 5265 5266 static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv); 5267 5268 /** 5269 * intel_power_domains_init_hw - initialize hardware power domain state 5270 * @i915: i915 device instance 5271 * @resume: Called from resume code paths or not 5272 * 5273 * This function initializes the hardware power domain state and enables all 5274 * power wells belonging to the INIT power domain. Power wells in other 5275 * domains (and not in the INIT domain) are referenced or disabled by 5276 * intel_modeset_readout_hw_state(). After that the reference count of each 5277 * power well must match its HW enabled state, see 5278 * intel_power_domains_verify_state(). 5279 * 5280 * It will return with power domains disabled (to be enabled later by 5281 * intel_power_domains_enable()) and must be paired with 5282 * intel_power_domains_driver_remove(). 5283 */ 5284 void intel_power_domains_init_hw(struct drm_i915_private *i915, bool resume) 5285 { 5286 struct i915_power_domains *power_domains = &i915->power_domains; 5287 5288 power_domains->initializing = true; 5289 5290 if (INTEL_GEN(i915) >= 11) { 5291 icl_display_core_init(i915, resume); 5292 } else if (IS_CANNONLAKE(i915)) { 5293 cnl_display_core_init(i915, resume); 5294 } else if (IS_GEN9_BC(i915)) { 5295 skl_display_core_init(i915, resume); 5296 } else if (IS_GEN9_LP(i915)) { 5297 bxt_display_core_init(i915, resume); 5298 } else if (IS_CHERRYVIEW(i915)) { 5299 mutex_lock(&power_domains->lock); 5300 chv_phy_control_init(i915); 5301 mutex_unlock(&power_domains->lock); 5302 assert_isp_power_gated(i915); 5303 } else if (IS_VALLEYVIEW(i915)) { 5304 mutex_lock(&power_domains->lock); 5305 vlv_cmnlane_wa(i915); 5306 mutex_unlock(&power_domains->lock); 5307 assert_ved_power_gated(i915); 5308 assert_isp_power_gated(i915); 5309 } else if (IS_BROADWELL(i915) || IS_HASWELL(i915)) { 5310 hsw_assert_cdclk(i915); 5311 intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915)); 5312 } else if (IS_IVYBRIDGE(i915)) { 5313 intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915)); 5314 } 5315 5316 /* 5317 * Keep all power wells enabled for any dependent HW access during 5318 * initialization and to make sure we keep BIOS enabled display HW 5319 * resources powered until display HW readout is complete. We drop 5320 * this reference in intel_power_domains_enable(). 5321 */ 5322 power_domains->wakeref = 5323 intel_display_power_get(i915, POWER_DOMAIN_INIT); 5324 5325 /* Disable power support if the user asked so. */ 5326 if (!i915_modparams.disable_power_well) 5327 intel_display_power_get(i915, POWER_DOMAIN_INIT); 5328 intel_power_domains_sync_hw(i915); 5329 5330 power_domains->initializing = false; 5331 } 5332 5333 /** 5334 * intel_power_domains_driver_remove - deinitialize hw power domain state 5335 * @i915: i915 device instance 5336 * 5337 * De-initializes the display power domain HW state. It also ensures that the 5338 * device stays powered up so that the driver can be reloaded. 5339 * 5340 * It must be called with power domains already disabled (after a call to 5341 * intel_power_domains_disable()) and must be paired with 5342 * intel_power_domains_init_hw(). 5343 */ 5344 void intel_power_domains_driver_remove(struct drm_i915_private *i915) 5345 { 5346 intel_wakeref_t wakeref __maybe_unused = 5347 fetch_and_zero(&i915->power_domains.wakeref); 5348 5349 /* Remove the refcount we took to keep power well support disabled. */ 5350 if (!i915_modparams.disable_power_well) 5351 intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT); 5352 5353 intel_display_power_flush_work_sync(i915); 5354 5355 intel_power_domains_verify_state(i915); 5356 5357 /* Keep the power well enabled, but cancel its rpm wakeref. */ 5358 intel_runtime_pm_put(&i915->runtime_pm, wakeref); 5359 } 5360 5361 /** 5362 * intel_power_domains_enable - enable toggling of display power wells 5363 * @i915: i915 device instance 5364 * 5365 * Enable the ondemand enabling/disabling of the display power wells. Note that 5366 * power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled 5367 * only at specific points of the display modeset sequence, thus they are not 5368 * affected by the intel_power_domains_enable()/disable() calls. The purpose 5369 * of these function is to keep the rest of power wells enabled until the end 5370 * of display HW readout (which will acquire the power references reflecting 5371 * the current HW state). 5372 */ 5373 void intel_power_domains_enable(struct drm_i915_private *i915) 5374 { 5375 intel_wakeref_t wakeref __maybe_unused = 5376 fetch_and_zero(&i915->power_domains.wakeref); 5377 5378 intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref); 5379 intel_power_domains_verify_state(i915); 5380 } 5381 5382 /** 5383 * intel_power_domains_disable - disable toggling of display power wells 5384 * @i915: i915 device instance 5385 * 5386 * Disable the ondemand enabling/disabling of the display power wells. See 5387 * intel_power_domains_enable() for which power wells this call controls. 5388 */ 5389 void intel_power_domains_disable(struct drm_i915_private *i915) 5390 { 5391 struct i915_power_domains *power_domains = &i915->power_domains; 5392 5393 drm_WARN_ON(&i915->drm, power_domains->wakeref); 5394 power_domains->wakeref = 5395 intel_display_power_get(i915, POWER_DOMAIN_INIT); 5396 5397 intel_power_domains_verify_state(i915); 5398 } 5399 5400 /** 5401 * intel_power_domains_suspend - suspend power domain state 5402 * @i915: i915 device instance 5403 * @suspend_mode: specifies the target suspend state (idle, mem, hibernation) 5404 * 5405 * This function prepares the hardware power domain state before entering 5406 * system suspend. 5407 * 5408 * It must be called with power domains already disabled (after a call to 5409 * intel_power_domains_disable()) and paired with intel_power_domains_resume(). 5410 */ 5411 void intel_power_domains_suspend(struct drm_i915_private *i915, 5412 enum i915_drm_suspend_mode suspend_mode) 5413 { 5414 struct i915_power_domains *power_domains = &i915->power_domains; 5415 intel_wakeref_t wakeref __maybe_unused = 5416 fetch_and_zero(&power_domains->wakeref); 5417 5418 intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref); 5419 5420 /* 5421 * In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9 5422 * support don't manually deinit the power domains. This also means the 5423 * CSR/DMC firmware will stay active, it will power down any HW 5424 * resources as required and also enable deeper system power states 5425 * that would be blocked if the firmware was inactive. 5426 */ 5427 if (!(i915->csr.allowed_dc_mask & DC_STATE_EN_DC9) && 5428 suspend_mode == I915_DRM_SUSPEND_IDLE && 5429 i915->csr.dmc_payload) { 5430 intel_display_power_flush_work(i915); 5431 intel_power_domains_verify_state(i915); 5432 return; 5433 } 5434 5435 /* 5436 * Even if power well support was disabled we still want to disable 5437 * power wells if power domains must be deinitialized for suspend. 5438 */ 5439 if (!i915_modparams.disable_power_well) 5440 intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT); 5441 5442 intel_display_power_flush_work(i915); 5443 intel_power_domains_verify_state(i915); 5444 5445 if (INTEL_GEN(i915) >= 11) 5446 icl_display_core_uninit(i915); 5447 else if (IS_CANNONLAKE(i915)) 5448 cnl_display_core_uninit(i915); 5449 else if (IS_GEN9_BC(i915)) 5450 skl_display_core_uninit(i915); 5451 else if (IS_GEN9_LP(i915)) 5452 bxt_display_core_uninit(i915); 5453 5454 power_domains->display_core_suspended = true; 5455 } 5456 5457 /** 5458 * intel_power_domains_resume - resume power domain state 5459 * @i915: i915 device instance 5460 * 5461 * This function resume the hardware power domain state during system resume. 5462 * 5463 * It will return with power domain support disabled (to be enabled later by 5464 * intel_power_domains_enable()) and must be paired with 5465 * intel_power_domains_suspend(). 5466 */ 5467 void intel_power_domains_resume(struct drm_i915_private *i915) 5468 { 5469 struct i915_power_domains *power_domains = &i915->power_domains; 5470 5471 if (power_domains->display_core_suspended) { 5472 intel_power_domains_init_hw(i915, true); 5473 power_domains->display_core_suspended = false; 5474 } else { 5475 drm_WARN_ON(&i915->drm, power_domains->wakeref); 5476 power_domains->wakeref = 5477 intel_display_power_get(i915, POWER_DOMAIN_INIT); 5478 } 5479 5480 intel_power_domains_verify_state(i915); 5481 } 5482 5483 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 5484 5485 static void intel_power_domains_dump_info(struct drm_i915_private *i915) 5486 { 5487 struct i915_power_domains *power_domains = &i915->power_domains; 5488 struct i915_power_well *power_well; 5489 5490 for_each_power_well(i915, power_well) { 5491 enum intel_display_power_domain domain; 5492 5493 drm_dbg(&i915->drm, "%-25s %d\n", 5494 power_well->desc->name, power_well->count); 5495 5496 for_each_power_domain(domain, power_well->desc->domains) 5497 drm_dbg(&i915->drm, " %-23s %d\n", 5498 intel_display_power_domain_str(domain), 5499 power_domains->domain_use_count[domain]); 5500 } 5501 } 5502 5503 /** 5504 * intel_power_domains_verify_state - verify the HW/SW state for all power wells 5505 * @i915: i915 device instance 5506 * 5507 * Verify if the reference count of each power well matches its HW enabled 5508 * state and the total refcount of the domains it belongs to. This must be 5509 * called after modeset HW state sanitization, which is responsible for 5510 * acquiring reference counts for any power wells in use and disabling the 5511 * ones left on by BIOS but not required by any active output. 5512 */ 5513 static void intel_power_domains_verify_state(struct drm_i915_private *i915) 5514 { 5515 struct i915_power_domains *power_domains = &i915->power_domains; 5516 struct i915_power_well *power_well; 5517 bool dump_domain_info; 5518 5519 mutex_lock(&power_domains->lock); 5520 5521 verify_async_put_domains_state(power_domains); 5522 5523 dump_domain_info = false; 5524 for_each_power_well(i915, power_well) { 5525 enum intel_display_power_domain domain; 5526 int domains_count; 5527 bool enabled; 5528 5529 enabled = power_well->desc->ops->is_enabled(i915, power_well); 5530 if ((power_well->count || power_well->desc->always_on) != 5531 enabled) 5532 drm_err(&i915->drm, 5533 "power well %s state mismatch (refcount %d/enabled %d)", 5534 power_well->desc->name, 5535 power_well->count, enabled); 5536 5537 domains_count = 0; 5538 for_each_power_domain(domain, power_well->desc->domains) 5539 domains_count += power_domains->domain_use_count[domain]; 5540 5541 if (power_well->count != domains_count) { 5542 drm_err(&i915->drm, 5543 "power well %s refcount/domain refcount mismatch " 5544 "(refcount %d/domains refcount %d)\n", 5545 power_well->desc->name, power_well->count, 5546 domains_count); 5547 dump_domain_info = true; 5548 } 5549 } 5550 5551 if (dump_domain_info) { 5552 static bool dumped; 5553 5554 if (!dumped) { 5555 intel_power_domains_dump_info(i915); 5556 dumped = true; 5557 } 5558 } 5559 5560 mutex_unlock(&power_domains->lock); 5561 } 5562 5563 #else 5564 5565 static void intel_power_domains_verify_state(struct drm_i915_private *i915) 5566 { 5567 } 5568 5569 #endif 5570 5571 void intel_display_power_suspend_late(struct drm_i915_private *i915) 5572 { 5573 if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) 5574 bxt_enable_dc9(i915); 5575 else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) 5576 hsw_enable_pc8(i915); 5577 } 5578 5579 void intel_display_power_resume_early(struct drm_i915_private *i915) 5580 { 5581 if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) { 5582 gen9_sanitize_dc_state(i915); 5583 bxt_disable_dc9(i915); 5584 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) { 5585 hsw_disable_pc8(i915); 5586 } 5587 } 5588 5589 void intel_display_power_suspend(struct drm_i915_private *i915) 5590 { 5591 if (INTEL_GEN(i915) >= 11) { 5592 icl_display_core_uninit(i915); 5593 bxt_enable_dc9(i915); 5594 } else if (IS_GEN9_LP(i915)) { 5595 bxt_display_core_uninit(i915); 5596 bxt_enable_dc9(i915); 5597 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) { 5598 hsw_enable_pc8(i915); 5599 } 5600 } 5601 5602 void intel_display_power_resume(struct drm_i915_private *i915) 5603 { 5604 if (INTEL_GEN(i915) >= 11) { 5605 bxt_disable_dc9(i915); 5606 icl_display_core_init(i915, true); 5607 if (i915->csr.dmc_payload) { 5608 if (i915->csr.allowed_dc_mask & 5609 DC_STATE_EN_UPTO_DC6) 5610 skl_enable_dc6(i915); 5611 else if (i915->csr.allowed_dc_mask & 5612 DC_STATE_EN_UPTO_DC5) 5613 gen9_enable_dc5(i915); 5614 } 5615 } else if (IS_GEN9_LP(i915)) { 5616 bxt_disable_dc9(i915); 5617 bxt_display_core_init(i915, true); 5618 if (i915->csr.dmc_payload && 5619 (i915->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5)) 5620 gen9_enable_dc5(i915); 5621 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) { 5622 hsw_disable_pc8(i915); 5623 } 5624 } 5625