1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2019 Linaro Ltd. 4 * 5 * Author: Stanimir Varbanov <stanimir.varbanov@linaro.org> 6 */ 7 #include <linux/clk.h> 8 #include <linux/interconnect.h> 9 #include <linux/iopoll.h> 10 #include <linux/kernel.h> 11 #include <linux/pm_domain.h> 12 #include <linux/pm_opp.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/reset.h> 15 #include <linux/types.h> 16 #include <media/v4l2-mem2mem.h> 17 18 #include "core.h" 19 #include "hfi_parser.h" 20 #include "hfi_venus_io.h" 21 #include "pm_helpers.h" 22 #include "hfi_platform.h" 23 24 static bool legacy_binding; 25 26 static int core_clks_get(struct venus_core *core) 27 { 28 const struct venus_resources *res = core->res; 29 struct device *dev = core->dev; 30 unsigned int i; 31 32 for (i = 0; i < res->clks_num; i++) { 33 core->clks[i] = devm_clk_get(dev, res->clks[i]); 34 if (IS_ERR(core->clks[i])) 35 return PTR_ERR(core->clks[i]); 36 } 37 38 return 0; 39 } 40 41 static int core_clks_enable(struct venus_core *core) 42 { 43 const struct venus_resources *res = core->res; 44 const struct freq_tbl *freq_tbl = core->res->freq_tbl; 45 unsigned int freq_tbl_size = core->res->freq_tbl_size; 46 unsigned long freq; 47 unsigned int i; 48 int ret; 49 50 if (!freq_tbl) 51 return -EINVAL; 52 53 freq = freq_tbl[freq_tbl_size - 1].freq; 54 55 for (i = 0; i < res->clks_num; i++) { 56 if (IS_V6(core)) { 57 ret = clk_set_rate(core->clks[i], freq); 58 if (ret) 59 goto err; 60 } 61 62 ret = clk_prepare_enable(core->clks[i]); 63 if (ret) 64 goto err; 65 } 66 67 return 0; 68 err: 69 while (i--) 70 clk_disable_unprepare(core->clks[i]); 71 72 return ret; 73 } 74 75 static void core_clks_disable(struct venus_core *core) 76 { 77 const struct venus_resources *res = core->res; 78 unsigned int i = res->clks_num; 79 80 while (i--) 81 clk_disable_unprepare(core->clks[i]); 82 } 83 84 static int core_clks_set_rate(struct venus_core *core, unsigned long freq) 85 { 86 int ret; 87 88 ret = dev_pm_opp_set_rate(core->dev, freq); 89 if (ret) 90 return ret; 91 92 ret = clk_set_rate(core->vcodec0_clks[0], freq); 93 if (ret) 94 return ret; 95 96 ret = clk_set_rate(core->vcodec1_clks[0], freq); 97 if (ret) 98 return ret; 99 100 return 0; 101 } 102 103 static int vcodec_clks_get(struct venus_core *core, struct device *dev, 104 struct clk **clks, const char * const *id) 105 { 106 const struct venus_resources *res = core->res; 107 unsigned int i; 108 109 for (i = 0; i < res->vcodec_clks_num; i++) { 110 if (!id[i]) 111 continue; 112 clks[i] = devm_clk_get(dev, id[i]); 113 if (IS_ERR(clks[i])) 114 return PTR_ERR(clks[i]); 115 } 116 117 return 0; 118 } 119 120 static int vcodec_clks_enable(struct venus_core *core, struct clk **clks) 121 { 122 const struct venus_resources *res = core->res; 123 unsigned int i; 124 int ret; 125 126 for (i = 0; i < res->vcodec_clks_num; i++) { 127 ret = clk_prepare_enable(clks[i]); 128 if (ret) 129 goto err; 130 } 131 132 return 0; 133 err: 134 while (i--) 135 clk_disable_unprepare(clks[i]); 136 137 return ret; 138 } 139 140 static void vcodec_clks_disable(struct venus_core *core, struct clk **clks) 141 { 142 const struct venus_resources *res = core->res; 143 unsigned int i = res->vcodec_clks_num; 144 145 while (i--) 146 clk_disable_unprepare(clks[i]); 147 } 148 149 static u32 load_per_instance(struct venus_inst *inst) 150 { 151 u32 mbs; 152 153 if (!inst || !(inst->state >= INST_INIT && inst->state < INST_STOP)) 154 return 0; 155 156 mbs = (ALIGN(inst->width, 16) / 16) * (ALIGN(inst->height, 16) / 16); 157 158 return mbs * inst->fps; 159 } 160 161 static u32 load_per_type(struct venus_core *core, u32 session_type) 162 { 163 struct venus_inst *inst = NULL; 164 u32 mbs_per_sec = 0; 165 166 list_for_each_entry(inst, &core->instances, list) { 167 if (inst->session_type != session_type) 168 continue; 169 170 mbs_per_sec += load_per_instance(inst); 171 } 172 173 return mbs_per_sec; 174 } 175 176 static void mbs_to_bw(struct venus_inst *inst, u32 mbs, u32 *avg, u32 *peak) 177 { 178 const struct venus_resources *res = inst->core->res; 179 const struct bw_tbl *bw_tbl; 180 unsigned int num_rows, i; 181 182 *avg = 0; 183 *peak = 0; 184 185 if (mbs == 0) 186 return; 187 188 if (inst->session_type == VIDC_SESSION_TYPE_ENC) { 189 num_rows = res->bw_tbl_enc_size; 190 bw_tbl = res->bw_tbl_enc; 191 } else if (inst->session_type == VIDC_SESSION_TYPE_DEC) { 192 num_rows = res->bw_tbl_dec_size; 193 bw_tbl = res->bw_tbl_dec; 194 } else { 195 return; 196 } 197 198 if (!bw_tbl || num_rows == 0) 199 return; 200 201 for (i = 0; i < num_rows; i++) { 202 if (i != 0 && mbs > bw_tbl[i].mbs_per_sec) 203 break; 204 205 if (inst->dpb_fmt & HFI_COLOR_FORMAT_10_BIT_BASE) { 206 *avg = bw_tbl[i].avg_10bit; 207 *peak = bw_tbl[i].peak_10bit; 208 } else { 209 *avg = bw_tbl[i].avg; 210 *peak = bw_tbl[i].peak; 211 } 212 } 213 } 214 215 static int load_scale_bw(struct venus_core *core) 216 { 217 struct venus_inst *inst = NULL; 218 u32 mbs_per_sec, avg, peak, total_avg = 0, total_peak = 0; 219 220 list_for_each_entry(inst, &core->instances, list) { 221 mbs_per_sec = load_per_instance(inst); 222 mbs_to_bw(inst, mbs_per_sec, &avg, &peak); 223 total_avg += avg; 224 total_peak += peak; 225 } 226 227 /* 228 * keep minimum bandwidth vote for "video-mem" path, 229 * so that clks can be disabled during vdec_session_release(). 230 * Actual bandwidth drop will be done during device supend 231 * so that device can power down without any warnings. 232 */ 233 234 if (!total_avg && !total_peak) 235 total_avg = kbps_to_icc(1000); 236 237 dev_dbg(core->dev, VDBGL "total: avg_bw: %u, peak_bw: %u\n", 238 total_avg, total_peak); 239 240 return icc_set_bw(core->video_path, total_avg, total_peak); 241 } 242 243 static int load_scale_v1(struct venus_inst *inst) 244 { 245 struct venus_core *core = inst->core; 246 const struct freq_tbl *table = core->res->freq_tbl; 247 unsigned int num_rows = core->res->freq_tbl_size; 248 unsigned long freq = table[0].freq; 249 struct device *dev = core->dev; 250 u32 mbs_per_sec; 251 unsigned int i; 252 int ret = 0; 253 254 mutex_lock(&core->lock); 255 mbs_per_sec = load_per_type(core, VIDC_SESSION_TYPE_ENC) + 256 load_per_type(core, VIDC_SESSION_TYPE_DEC); 257 258 if (mbs_per_sec > core->res->max_load) 259 dev_warn(dev, "HW is overloaded, needed: %d max: %d\n", 260 mbs_per_sec, core->res->max_load); 261 262 if (!mbs_per_sec && num_rows > 1) { 263 freq = table[num_rows - 1].freq; 264 goto set_freq; 265 } 266 267 for (i = 0; i < num_rows; i++) { 268 if (mbs_per_sec > table[i].load) 269 break; 270 freq = table[i].freq; 271 } 272 273 set_freq: 274 275 ret = core_clks_set_rate(core, freq); 276 if (ret) { 277 dev_err(dev, "failed to set clock rate %lu (%d)\n", 278 freq, ret); 279 goto exit; 280 } 281 282 ret = load_scale_bw(core); 283 if (ret) { 284 dev_err(dev, "failed to set bandwidth (%d)\n", 285 ret); 286 goto exit; 287 } 288 289 exit: 290 mutex_unlock(&core->lock); 291 return ret; 292 } 293 294 static int core_get_v1(struct venus_core *core) 295 { 296 int ret; 297 298 ret = core_clks_get(core); 299 if (ret) 300 return ret; 301 302 ret = devm_pm_opp_set_clkname(core->dev, "core"); 303 if (ret) 304 return ret; 305 306 return 0; 307 } 308 309 static void core_put_v1(struct venus_core *core) 310 { 311 } 312 313 static int core_power_v1(struct venus_core *core, int on) 314 { 315 int ret = 0; 316 317 if (on == POWER_ON) 318 ret = core_clks_enable(core); 319 else 320 core_clks_disable(core); 321 322 return ret; 323 } 324 325 static const struct venus_pm_ops pm_ops_v1 = { 326 .core_get = core_get_v1, 327 .core_put = core_put_v1, 328 .core_power = core_power_v1, 329 .load_scale = load_scale_v1, 330 }; 331 332 static void 333 vcodec_control_v3(struct venus_core *core, u32 session_type, bool enable) 334 { 335 void __iomem *ctrl; 336 337 if (session_type == VIDC_SESSION_TYPE_DEC) 338 ctrl = core->wrapper_base + WRAPPER_VDEC_VCODEC_POWER_CONTROL; 339 else 340 ctrl = core->wrapper_base + WRAPPER_VENC_VCODEC_POWER_CONTROL; 341 342 if (enable) 343 writel(0, ctrl); 344 else 345 writel(1, ctrl); 346 } 347 348 static int vdec_get_v3(struct device *dev) 349 { 350 struct venus_core *core = dev_get_drvdata(dev); 351 352 return vcodec_clks_get(core, dev, core->vcodec0_clks, 353 core->res->vcodec0_clks); 354 } 355 356 static int vdec_power_v3(struct device *dev, int on) 357 { 358 struct venus_core *core = dev_get_drvdata(dev); 359 int ret = 0; 360 361 vcodec_control_v3(core, VIDC_SESSION_TYPE_DEC, true); 362 363 if (on == POWER_ON) 364 ret = vcodec_clks_enable(core, core->vcodec0_clks); 365 else 366 vcodec_clks_disable(core, core->vcodec0_clks); 367 368 vcodec_control_v3(core, VIDC_SESSION_TYPE_DEC, false); 369 370 return ret; 371 } 372 373 static int venc_get_v3(struct device *dev) 374 { 375 struct venus_core *core = dev_get_drvdata(dev); 376 377 return vcodec_clks_get(core, dev, core->vcodec1_clks, 378 core->res->vcodec1_clks); 379 } 380 381 static int venc_power_v3(struct device *dev, int on) 382 { 383 struct venus_core *core = dev_get_drvdata(dev); 384 int ret = 0; 385 386 vcodec_control_v3(core, VIDC_SESSION_TYPE_ENC, true); 387 388 if (on == POWER_ON) 389 ret = vcodec_clks_enable(core, core->vcodec1_clks); 390 else 391 vcodec_clks_disable(core, core->vcodec1_clks); 392 393 vcodec_control_v3(core, VIDC_SESSION_TYPE_ENC, false); 394 395 return ret; 396 } 397 398 static const struct venus_pm_ops pm_ops_v3 = { 399 .core_get = core_get_v1, 400 .core_put = core_put_v1, 401 .core_power = core_power_v1, 402 .vdec_get = vdec_get_v3, 403 .vdec_power = vdec_power_v3, 404 .venc_get = venc_get_v3, 405 .venc_power = venc_power_v3, 406 .load_scale = load_scale_v1, 407 }; 408 409 static int vcodec_control_v4(struct venus_core *core, u32 coreid, bool enable) 410 { 411 void __iomem *ctrl, *stat; 412 u32 val; 413 int ret; 414 415 if (IS_V6(core)) { 416 ctrl = core->wrapper_base + WRAPPER_CORE_POWER_CONTROL_V6; 417 stat = core->wrapper_base + WRAPPER_CORE_POWER_STATUS_V6; 418 } else if (coreid == VIDC_CORE_ID_1) { 419 ctrl = core->wrapper_base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL; 420 stat = core->wrapper_base + WRAPPER_VCODEC0_MMCC_POWER_STATUS; 421 } else { 422 ctrl = core->wrapper_base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL; 423 stat = core->wrapper_base + WRAPPER_VCODEC1_MMCC_POWER_STATUS; 424 } 425 426 if (enable) { 427 writel(0, ctrl); 428 429 ret = readl_poll_timeout(stat, val, val & BIT(1), 1, 100); 430 if (ret) 431 return ret; 432 } else { 433 writel(1, ctrl); 434 435 ret = readl_poll_timeout(stat, val, !(val & BIT(1)), 1, 100); 436 if (ret) 437 return ret; 438 } 439 440 return 0; 441 } 442 443 static int poweroff_coreid(struct venus_core *core, unsigned int coreid_mask) 444 { 445 int ret; 446 447 if (coreid_mask & VIDC_CORE_ID_1) { 448 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 449 if (ret) 450 return ret; 451 452 vcodec_clks_disable(core, core->vcodec0_clks); 453 454 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, false); 455 if (ret) 456 return ret; 457 458 ret = pm_runtime_put_sync(core->pmdomains[1]); 459 if (ret < 0) 460 return ret; 461 } 462 463 if (coreid_mask & VIDC_CORE_ID_2) { 464 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 465 if (ret) 466 return ret; 467 468 vcodec_clks_disable(core, core->vcodec1_clks); 469 470 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, false); 471 if (ret) 472 return ret; 473 474 ret = pm_runtime_put_sync(core->pmdomains[2]); 475 if (ret < 0) 476 return ret; 477 } 478 479 return 0; 480 } 481 482 static int poweron_coreid(struct venus_core *core, unsigned int coreid_mask) 483 { 484 int ret; 485 486 if (coreid_mask & VIDC_CORE_ID_1) { 487 ret = pm_runtime_get_sync(core->pmdomains[1]); 488 if (ret < 0) 489 return ret; 490 491 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 492 if (ret) 493 return ret; 494 495 ret = vcodec_clks_enable(core, core->vcodec0_clks); 496 if (ret) 497 return ret; 498 499 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, false); 500 if (ret < 0) 501 return ret; 502 } 503 504 if (coreid_mask & VIDC_CORE_ID_2) { 505 ret = pm_runtime_get_sync(core->pmdomains[2]); 506 if (ret < 0) 507 return ret; 508 509 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 510 if (ret) 511 return ret; 512 513 ret = vcodec_clks_enable(core, core->vcodec1_clks); 514 if (ret) 515 return ret; 516 517 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, false); 518 if (ret < 0) 519 return ret; 520 } 521 522 return 0; 523 } 524 525 static inline int power_save_mode_enable(struct venus_inst *inst, 526 bool enable) 527 { 528 struct venc_controls *enc_ctr = &inst->controls.enc; 529 const u32 ptype = HFI_PROPERTY_CONFIG_VENC_PERF_MODE; 530 u32 venc_mode; 531 int ret = 0; 532 533 if (inst->session_type != VIDC_SESSION_TYPE_ENC) 534 return 0; 535 536 if (enc_ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CQ) 537 enable = false; 538 539 venc_mode = enable ? HFI_VENC_PERFMODE_POWER_SAVE : 540 HFI_VENC_PERFMODE_MAX_QUALITY; 541 542 ret = hfi_session_set_property(inst, ptype, &venc_mode); 543 if (ret) 544 return ret; 545 546 inst->flags = enable ? inst->flags | VENUS_LOW_POWER : 547 inst->flags & ~VENUS_LOW_POWER; 548 549 return ret; 550 } 551 552 static int move_core_to_power_save_mode(struct venus_core *core, 553 u32 core_id) 554 { 555 struct venus_inst *inst = NULL; 556 557 mutex_lock(&core->lock); 558 list_for_each_entry(inst, &core->instances, list) { 559 if (inst->clk_data.core_id == core_id && 560 inst->session_type == VIDC_SESSION_TYPE_ENC) 561 power_save_mode_enable(inst, true); 562 } 563 mutex_unlock(&core->lock); 564 return 0; 565 } 566 567 static void 568 min_loaded_core(struct venus_inst *inst, u32 *min_coreid, u32 *min_load, bool low_power) 569 { 570 u32 mbs_per_sec, load, core1_load = 0, core2_load = 0; 571 u32 cores_max = core_num_max(inst); 572 struct venus_core *core = inst->core; 573 struct venus_inst *inst_pos; 574 unsigned long vpp_freq; 575 u32 coreid; 576 577 mutex_lock(&core->lock); 578 579 list_for_each_entry(inst_pos, &core->instances, list) { 580 if (inst_pos == inst) 581 continue; 582 583 if (inst_pos->state != INST_START) 584 continue; 585 586 if (inst->session_type == VIDC_SESSION_TYPE_DEC) 587 vpp_freq = inst_pos->clk_data.vpp_freq; 588 else if (inst->session_type == VIDC_SESSION_TYPE_ENC) 589 vpp_freq = low_power ? inst_pos->clk_data.low_power_freq : 590 inst_pos->clk_data.vpp_freq; 591 else 592 continue; 593 594 coreid = inst_pos->clk_data.core_id; 595 596 mbs_per_sec = load_per_instance(inst_pos); 597 load = mbs_per_sec * vpp_freq; 598 599 if ((coreid & VIDC_CORE_ID_3) == VIDC_CORE_ID_3) { 600 core1_load += load / 2; 601 core2_load += load / 2; 602 } else if (coreid & VIDC_CORE_ID_1) { 603 core1_load += load; 604 } else if (coreid & VIDC_CORE_ID_2) { 605 core2_load += load; 606 } 607 } 608 609 *min_coreid = core1_load <= core2_load ? 610 VIDC_CORE_ID_1 : VIDC_CORE_ID_2; 611 *min_load = min(core1_load, core2_load); 612 613 if (cores_max < VIDC_CORE_ID_2 || core->res->vcodec_num < 2) { 614 *min_coreid = VIDC_CORE_ID_1; 615 *min_load = core1_load; 616 } 617 618 mutex_unlock(&core->lock); 619 } 620 621 static int decide_core(struct venus_inst *inst) 622 { 623 const u32 ptype = HFI_PROPERTY_CONFIG_VIDEOCORES_USAGE; 624 struct venus_core *core = inst->core; 625 u32 min_coreid, min_load, cur_inst_load; 626 u32 min_lp_coreid, min_lp_load, cur_inst_lp_load; 627 struct hfi_videocores_usage_type cu; 628 unsigned long max_freq; 629 int ret = 0; 630 631 if (legacy_binding) { 632 if (inst->session_type == VIDC_SESSION_TYPE_DEC) 633 cu.video_core_enable_mask = VIDC_CORE_ID_1; 634 else 635 cu.video_core_enable_mask = VIDC_CORE_ID_2; 636 637 goto done; 638 } 639 640 if (inst->clk_data.core_id != VIDC_CORE_ID_DEFAULT) 641 return 0; 642 643 cur_inst_load = load_per_instance(inst); 644 cur_inst_load *= inst->clk_data.vpp_freq; 645 /*TODO : divide this inst->load by work_route */ 646 647 cur_inst_lp_load = load_per_instance(inst); 648 cur_inst_lp_load *= inst->clk_data.low_power_freq; 649 /*TODO : divide this inst->load by work_route */ 650 651 max_freq = core->res->freq_tbl[0].freq; 652 653 min_loaded_core(inst, &min_coreid, &min_load, false); 654 min_loaded_core(inst, &min_lp_coreid, &min_lp_load, true); 655 656 if (cur_inst_load + min_load <= max_freq) { 657 inst->clk_data.core_id = min_coreid; 658 cu.video_core_enable_mask = min_coreid; 659 } else if (cur_inst_lp_load + min_load <= max_freq) { 660 /* Move current instance to LP and return */ 661 inst->clk_data.core_id = min_coreid; 662 cu.video_core_enable_mask = min_coreid; 663 power_save_mode_enable(inst, true); 664 } else if (cur_inst_lp_load + min_lp_load <= max_freq) { 665 /* Move all instances to LP mode and return */ 666 inst->clk_data.core_id = min_lp_coreid; 667 cu.video_core_enable_mask = min_lp_coreid; 668 move_core_to_power_save_mode(core, min_lp_coreid); 669 } else { 670 dev_warn(core->dev, "HW can't support this load"); 671 return -EINVAL; 672 } 673 674 done: 675 ret = hfi_session_set_property(inst, ptype, &cu); 676 if (ret) 677 return ret; 678 679 return ret; 680 } 681 682 static int acquire_core(struct venus_inst *inst) 683 { 684 struct venus_core *core = inst->core; 685 unsigned int coreid_mask = 0; 686 687 if (inst->core_acquired) 688 return 0; 689 690 inst->core_acquired = true; 691 692 if (inst->clk_data.core_id & VIDC_CORE_ID_1) { 693 if (core->core0_usage_count++) 694 return 0; 695 696 coreid_mask = VIDC_CORE_ID_1; 697 } 698 699 if (inst->clk_data.core_id & VIDC_CORE_ID_2) { 700 if (core->core1_usage_count++) 701 return 0; 702 703 coreid_mask |= VIDC_CORE_ID_2; 704 } 705 706 return poweron_coreid(core, coreid_mask); 707 } 708 709 static int release_core(struct venus_inst *inst) 710 { 711 struct venus_core *core = inst->core; 712 unsigned int coreid_mask = 0; 713 int ret; 714 715 if (!inst->core_acquired) 716 return 0; 717 718 if (inst->clk_data.core_id & VIDC_CORE_ID_1) { 719 if (--core->core0_usage_count) 720 goto done; 721 722 coreid_mask = VIDC_CORE_ID_1; 723 } 724 725 if (inst->clk_data.core_id & VIDC_CORE_ID_2) { 726 if (--core->core1_usage_count) 727 goto done; 728 729 coreid_mask |= VIDC_CORE_ID_2; 730 } 731 732 ret = poweroff_coreid(core, coreid_mask); 733 if (ret) 734 return ret; 735 736 done: 737 inst->clk_data.core_id = VIDC_CORE_ID_DEFAULT; 738 inst->core_acquired = false; 739 return 0; 740 } 741 742 static int coreid_power_v4(struct venus_inst *inst, int on) 743 { 744 struct venus_core *core = inst->core; 745 int ret; 746 747 if (legacy_binding) 748 return 0; 749 750 if (on == POWER_ON) { 751 ret = decide_core(inst); 752 if (ret) 753 return ret; 754 755 mutex_lock(&core->lock); 756 ret = acquire_core(inst); 757 mutex_unlock(&core->lock); 758 } else { 759 mutex_lock(&core->lock); 760 ret = release_core(inst); 761 mutex_unlock(&core->lock); 762 } 763 764 return ret; 765 } 766 767 static int vdec_get_v4(struct device *dev) 768 { 769 struct venus_core *core = dev_get_drvdata(dev); 770 771 if (!legacy_binding) 772 return 0; 773 774 return vcodec_clks_get(core, dev, core->vcodec0_clks, 775 core->res->vcodec0_clks); 776 } 777 778 static void vdec_put_v4(struct device *dev) 779 { 780 struct venus_core *core = dev_get_drvdata(dev); 781 unsigned int i; 782 783 if (!legacy_binding) 784 return; 785 786 for (i = 0; i < core->res->vcodec_clks_num; i++) 787 core->vcodec0_clks[i] = NULL; 788 } 789 790 static int vdec_power_v4(struct device *dev, int on) 791 { 792 struct venus_core *core = dev_get_drvdata(dev); 793 int ret; 794 795 if (!legacy_binding) 796 return 0; 797 798 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 799 if (ret) 800 return ret; 801 802 if (on == POWER_ON) 803 ret = vcodec_clks_enable(core, core->vcodec0_clks); 804 else 805 vcodec_clks_disable(core, core->vcodec0_clks); 806 807 vcodec_control_v4(core, VIDC_CORE_ID_1, false); 808 809 return ret; 810 } 811 812 static int venc_get_v4(struct device *dev) 813 { 814 struct venus_core *core = dev_get_drvdata(dev); 815 816 if (!legacy_binding) 817 return 0; 818 819 return vcodec_clks_get(core, dev, core->vcodec1_clks, 820 core->res->vcodec1_clks); 821 } 822 823 static void venc_put_v4(struct device *dev) 824 { 825 struct venus_core *core = dev_get_drvdata(dev); 826 unsigned int i; 827 828 if (!legacy_binding) 829 return; 830 831 for (i = 0; i < core->res->vcodec_clks_num; i++) 832 core->vcodec1_clks[i] = NULL; 833 } 834 835 static int venc_power_v4(struct device *dev, int on) 836 { 837 struct venus_core *core = dev_get_drvdata(dev); 838 int ret; 839 840 if (!legacy_binding) 841 return 0; 842 843 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 844 if (ret) 845 return ret; 846 847 if (on == POWER_ON) 848 ret = vcodec_clks_enable(core, core->vcodec1_clks); 849 else 850 vcodec_clks_disable(core, core->vcodec1_clks); 851 852 vcodec_control_v4(core, VIDC_CORE_ID_2, false); 853 854 return ret; 855 } 856 857 static int vcodec_domains_get(struct venus_core *core) 858 { 859 int ret; 860 struct device **opp_virt_dev; 861 struct device *dev = core->dev; 862 const struct venus_resources *res = core->res; 863 struct device *pd; 864 unsigned int i; 865 866 if (!res->vcodec_pmdomains_num) 867 goto skip_pmdomains; 868 869 for (i = 0; i < res->vcodec_pmdomains_num; i++) { 870 pd = dev_pm_domain_attach_by_name(dev, 871 res->vcodec_pmdomains[i]); 872 if (IS_ERR_OR_NULL(pd)) 873 return PTR_ERR(pd) ? : -ENODATA; 874 core->pmdomains[i] = pd; 875 } 876 877 skip_pmdomains: 878 if (!core->res->opp_pmdomain) 879 return 0; 880 881 /* Attach the power domain for setting performance state */ 882 ret = devm_pm_opp_attach_genpd(dev, res->opp_pmdomain, &opp_virt_dev); 883 if (ret) 884 goto opp_attach_err; 885 886 core->opp_pmdomain = *opp_virt_dev; 887 core->opp_dl_venus = device_link_add(dev, core->opp_pmdomain, 888 DL_FLAG_RPM_ACTIVE | 889 DL_FLAG_PM_RUNTIME | 890 DL_FLAG_STATELESS); 891 if (!core->opp_dl_venus) { 892 ret = -ENODEV; 893 goto opp_attach_err; 894 } 895 896 return 0; 897 898 opp_attach_err: 899 for (i = 0; i < res->vcodec_pmdomains_num; i++) { 900 if (IS_ERR_OR_NULL(core->pmdomains[i])) 901 continue; 902 dev_pm_domain_detach(core->pmdomains[i], true); 903 } 904 905 return ret; 906 } 907 908 static void vcodec_domains_put(struct venus_core *core) 909 { 910 const struct venus_resources *res = core->res; 911 unsigned int i; 912 913 if (!res->vcodec_pmdomains_num) 914 goto skip_pmdomains; 915 916 for (i = 0; i < res->vcodec_pmdomains_num; i++) { 917 if (IS_ERR_OR_NULL(core->pmdomains[i])) 918 continue; 919 dev_pm_domain_detach(core->pmdomains[i], true); 920 } 921 922 skip_pmdomains: 923 if (!core->has_opp_table) 924 return; 925 926 if (core->opp_dl_venus) 927 device_link_del(core->opp_dl_venus); 928 } 929 930 static int core_resets_reset(struct venus_core *core) 931 { 932 const struct venus_resources *res = core->res; 933 unsigned int i; 934 int ret; 935 936 if (!res->resets_num) 937 return 0; 938 939 for (i = 0; i < res->resets_num; i++) { 940 ret = reset_control_assert(core->resets[i]); 941 if (ret) 942 goto err; 943 944 usleep_range(150, 250); 945 ret = reset_control_deassert(core->resets[i]); 946 if (ret) 947 goto err; 948 } 949 950 err: 951 return ret; 952 } 953 954 static int core_resets_get(struct venus_core *core) 955 { 956 struct device *dev = core->dev; 957 const struct venus_resources *res = core->res; 958 unsigned int i; 959 int ret; 960 961 if (!res->resets_num) 962 return 0; 963 964 for (i = 0; i < res->resets_num; i++) { 965 core->resets[i] = 966 devm_reset_control_get_exclusive(dev, res->resets[i]); 967 if (IS_ERR(core->resets[i])) { 968 ret = PTR_ERR(core->resets[i]); 969 return ret; 970 } 971 } 972 973 return 0; 974 } 975 976 static int core_get_v4(struct venus_core *core) 977 { 978 struct device *dev = core->dev; 979 const struct venus_resources *res = core->res; 980 int ret; 981 982 ret = core_clks_get(core); 983 if (ret) 984 return ret; 985 986 if (!res->vcodec_pmdomains_num) 987 legacy_binding = true; 988 989 dev_info(dev, "%s legacy binding\n", legacy_binding ? "" : "non"); 990 991 ret = vcodec_clks_get(core, dev, core->vcodec0_clks, res->vcodec0_clks); 992 if (ret) 993 return ret; 994 995 ret = vcodec_clks_get(core, dev, core->vcodec1_clks, res->vcodec1_clks); 996 if (ret) 997 return ret; 998 999 ret = core_resets_get(core); 1000 if (ret) 1001 return ret; 1002 1003 if (legacy_binding) 1004 return 0; 1005 1006 ret = devm_pm_opp_set_clkname(dev, "core"); 1007 if (ret) 1008 return ret; 1009 1010 ret = vcodec_domains_get(core); 1011 if (ret) 1012 return ret; 1013 1014 if (core->res->opp_pmdomain) { 1015 ret = devm_pm_opp_of_add_table(dev); 1016 if (!ret) { 1017 core->has_opp_table = true; 1018 } else if (ret != -ENODEV) { 1019 dev_err(dev, "invalid OPP table in device tree\n"); 1020 return ret; 1021 } 1022 } 1023 1024 return 0; 1025 } 1026 1027 static void core_put_v4(struct venus_core *core) 1028 { 1029 if (legacy_binding) 1030 return; 1031 1032 vcodec_domains_put(core); 1033 } 1034 1035 static int core_power_v4(struct venus_core *core, int on) 1036 { 1037 struct device *dev = core->dev; 1038 struct device *pmctrl = core->pmdomains[0]; 1039 int ret = 0; 1040 1041 if (on == POWER_ON) { 1042 if (pmctrl) { 1043 ret = pm_runtime_resume_and_get(pmctrl); 1044 if (ret < 0) { 1045 return ret; 1046 } 1047 } 1048 1049 ret = core_resets_reset(core); 1050 if (ret) { 1051 if (pmctrl) 1052 pm_runtime_put_sync(pmctrl); 1053 return ret; 1054 } 1055 1056 ret = core_clks_enable(core); 1057 if (ret < 0 && pmctrl) 1058 pm_runtime_put_sync(pmctrl); 1059 } else { 1060 /* Drop the performance state vote */ 1061 if (core->opp_pmdomain) 1062 dev_pm_opp_set_rate(dev, 0); 1063 1064 core_clks_disable(core); 1065 1066 ret = core_resets_reset(core); 1067 1068 if (pmctrl) 1069 pm_runtime_put_sync(pmctrl); 1070 } 1071 1072 return ret; 1073 } 1074 1075 static unsigned long calculate_inst_freq(struct venus_inst *inst, 1076 unsigned long filled_len) 1077 { 1078 unsigned long vpp_freq_per_mb = 0, vpp_freq = 0, vsp_freq = 0; 1079 u32 fps = (u32)inst->fps; 1080 u32 mbs_per_sec; 1081 1082 mbs_per_sec = load_per_instance(inst); 1083 1084 if (inst->state != INST_START) 1085 return 0; 1086 1087 if (inst->session_type == VIDC_SESSION_TYPE_ENC) { 1088 vpp_freq_per_mb = inst->flags & VENUS_LOW_POWER ? 1089 inst->clk_data.low_power_freq : 1090 inst->clk_data.vpp_freq; 1091 1092 vpp_freq = mbs_per_sec * vpp_freq_per_mb; 1093 } else { 1094 vpp_freq = mbs_per_sec * inst->clk_data.vpp_freq; 1095 } 1096 1097 /* 21 / 20 is overhead factor */ 1098 vpp_freq += vpp_freq / 20; 1099 vsp_freq = mbs_per_sec * inst->clk_data.vsp_freq; 1100 1101 /* 10 / 7 is overhead factor */ 1102 if (inst->session_type == VIDC_SESSION_TYPE_ENC) 1103 vsp_freq += (inst->controls.enc.bitrate * 10) / 7; 1104 else 1105 vsp_freq += ((fps * filled_len * 8) * 10) / 7; 1106 1107 return max(vpp_freq, vsp_freq); 1108 } 1109 1110 static int load_scale_v4(struct venus_inst *inst) 1111 { 1112 struct venus_core *core = inst->core; 1113 const struct freq_tbl *table = core->res->freq_tbl; 1114 unsigned int num_rows = core->res->freq_tbl_size; 1115 struct device *dev = core->dev; 1116 unsigned long freq = 0, freq_core1 = 0, freq_core2 = 0; 1117 unsigned long filled_len = 0; 1118 int i, ret = 0; 1119 1120 for (i = 0; i < inst->num_input_bufs; i++) 1121 filled_len = max(filled_len, inst->payloads[i]); 1122 1123 if (inst->session_type == VIDC_SESSION_TYPE_DEC && !filled_len) 1124 return ret; 1125 1126 freq = calculate_inst_freq(inst, filled_len); 1127 inst->clk_data.freq = freq; 1128 1129 mutex_lock(&core->lock); 1130 list_for_each_entry(inst, &core->instances, list) { 1131 if (inst->clk_data.core_id == VIDC_CORE_ID_1) { 1132 freq_core1 += inst->clk_data.freq; 1133 } else if (inst->clk_data.core_id == VIDC_CORE_ID_2) { 1134 freq_core2 += inst->clk_data.freq; 1135 } else if (inst->clk_data.core_id == VIDC_CORE_ID_3) { 1136 freq_core1 += inst->clk_data.freq; 1137 freq_core2 += inst->clk_data.freq; 1138 } 1139 } 1140 1141 freq = max(freq_core1, freq_core2); 1142 1143 if (freq > table[0].freq) { 1144 dev_dbg(dev, VDBGL "requested clock rate: %lu scaling clock rate : %lu\n", 1145 freq, table[0].freq); 1146 1147 freq = table[0].freq; 1148 goto set_freq; 1149 } 1150 1151 for (i = num_rows - 1 ; i >= 0; i--) { 1152 if (freq <= table[i].freq) { 1153 freq = table[i].freq; 1154 break; 1155 } 1156 } 1157 1158 set_freq: 1159 1160 ret = core_clks_set_rate(core, freq); 1161 if (ret) { 1162 dev_err(dev, "failed to set clock rate %lu (%d)\n", 1163 freq, ret); 1164 goto exit; 1165 } 1166 1167 ret = load_scale_bw(core); 1168 if (ret) { 1169 dev_err(dev, "failed to set bandwidth (%d)\n", 1170 ret); 1171 goto exit; 1172 } 1173 1174 exit: 1175 mutex_unlock(&core->lock); 1176 return ret; 1177 } 1178 1179 static const struct venus_pm_ops pm_ops_v4 = { 1180 .core_get = core_get_v4, 1181 .core_put = core_put_v4, 1182 .core_power = core_power_v4, 1183 .vdec_get = vdec_get_v4, 1184 .vdec_put = vdec_put_v4, 1185 .vdec_power = vdec_power_v4, 1186 .venc_get = venc_get_v4, 1187 .venc_put = venc_put_v4, 1188 .venc_power = venc_power_v4, 1189 .coreid_power = coreid_power_v4, 1190 .load_scale = load_scale_v4, 1191 }; 1192 1193 const struct venus_pm_ops *venus_pm_get(enum hfi_version version) 1194 { 1195 switch (version) { 1196 case HFI_VERSION_1XX: 1197 default: 1198 return &pm_ops_v1; 1199 case HFI_VERSION_3XX: 1200 return &pm_ops_v3; 1201 case HFI_VERSION_4XX: 1202 case HFI_VERSION_6XX: 1203 return &pm_ops_v4; 1204 } 1205 1206 return NULL; 1207 } 1208