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 ret = dev_pm_genpd_set_hwmode(core->pmdomains->pd_devs[coreid], !enable); 416 if (ret == -EOPNOTSUPP) { 417 core->hwmode_dev = false; 418 goto legacy; 419 } 420 421 core->hwmode_dev = true; 422 return ret; 423 424 legacy: 425 if (coreid == VIDC_CORE_ID_1) { 426 ctrl = core->wrapper_base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL; 427 stat = core->wrapper_base + WRAPPER_VCODEC0_MMCC_POWER_STATUS; 428 } else { 429 ctrl = core->wrapper_base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL; 430 stat = core->wrapper_base + WRAPPER_VCODEC1_MMCC_POWER_STATUS; 431 } 432 433 if (enable) { 434 writel(0, ctrl); 435 436 ret = readl_poll_timeout(stat, val, val & BIT(1), 1, 100); 437 if (ret) 438 return ret; 439 } else { 440 writel(1, ctrl); 441 442 ret = readl_poll_timeout(stat, val, !(val & BIT(1)), 1, 100); 443 if (ret) 444 return ret; 445 } 446 447 return 0; 448 } 449 450 static int poweroff_coreid(struct venus_core *core, unsigned int coreid_mask) 451 { 452 int ret; 453 454 if (coreid_mask & VIDC_CORE_ID_1) { 455 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 456 if (ret) 457 return ret; 458 459 vcodec_clks_disable(core, core->vcodec0_clks); 460 461 if (!core->hwmode_dev) { 462 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, false); 463 if (ret) 464 return ret; 465 } 466 467 ret = pm_runtime_put_sync(core->pmdomains->pd_devs[1]); 468 if (ret < 0) 469 return ret; 470 } 471 472 if (coreid_mask & VIDC_CORE_ID_2) { 473 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 474 if (ret) 475 return ret; 476 477 vcodec_clks_disable(core, core->vcodec1_clks); 478 479 if (!core->hwmode_dev) { 480 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, false); 481 if (ret) 482 return ret; 483 } 484 485 ret = pm_runtime_put_sync(core->pmdomains->pd_devs[2]); 486 if (ret < 0) 487 return ret; 488 } 489 490 return 0; 491 } 492 493 static int poweron_coreid(struct venus_core *core, unsigned int coreid_mask) 494 { 495 int ret; 496 497 if (coreid_mask & VIDC_CORE_ID_1) { 498 ret = pm_runtime_get_sync(core->pmdomains->pd_devs[1]); 499 if (ret < 0) 500 return ret; 501 502 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 503 if (ret) 504 return ret; 505 506 ret = vcodec_clks_enable(core, core->vcodec0_clks); 507 if (ret) 508 return ret; 509 510 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, false); 511 if (ret < 0) 512 return ret; 513 } 514 515 if (coreid_mask & VIDC_CORE_ID_2) { 516 ret = pm_runtime_get_sync(core->pmdomains->pd_devs[2]); 517 if (ret < 0) 518 return ret; 519 520 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 521 if (ret) 522 return ret; 523 524 ret = vcodec_clks_enable(core, core->vcodec1_clks); 525 if (ret) 526 return ret; 527 528 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, false); 529 if (ret < 0) 530 return ret; 531 } 532 533 return 0; 534 } 535 536 static inline int power_save_mode_enable(struct venus_inst *inst, 537 bool enable) 538 { 539 struct venc_controls *enc_ctr = &inst->controls.enc; 540 const u32 ptype = HFI_PROPERTY_CONFIG_VENC_PERF_MODE; 541 u32 venc_mode; 542 int ret = 0; 543 544 if (inst->session_type != VIDC_SESSION_TYPE_ENC) 545 return 0; 546 547 if (enc_ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CQ) 548 enable = false; 549 550 venc_mode = enable ? HFI_VENC_PERFMODE_POWER_SAVE : 551 HFI_VENC_PERFMODE_MAX_QUALITY; 552 553 ret = hfi_session_set_property(inst, ptype, &venc_mode); 554 if (ret) 555 return ret; 556 557 inst->flags = enable ? inst->flags | VENUS_LOW_POWER : 558 inst->flags & ~VENUS_LOW_POWER; 559 560 return ret; 561 } 562 563 static int move_core_to_power_save_mode(struct venus_core *core, 564 u32 core_id) 565 { 566 struct venus_inst *inst = NULL; 567 568 mutex_lock(&core->lock); 569 list_for_each_entry(inst, &core->instances, list) { 570 if (inst->clk_data.core_id == core_id && 571 inst->session_type == VIDC_SESSION_TYPE_ENC) 572 power_save_mode_enable(inst, true); 573 } 574 mutex_unlock(&core->lock); 575 return 0; 576 } 577 578 static void 579 min_loaded_core(struct venus_inst *inst, u32 *min_coreid, u32 *min_load, bool low_power) 580 { 581 u32 mbs_per_sec, load, core1_load = 0, core2_load = 0; 582 u32 cores_max = core_num_max(inst); 583 struct venus_core *core = inst->core; 584 struct venus_inst *inst_pos; 585 unsigned long vpp_freq; 586 u32 coreid; 587 588 mutex_lock(&core->lock); 589 590 list_for_each_entry(inst_pos, &core->instances, list) { 591 if (inst_pos == inst) 592 continue; 593 594 if (inst_pos->state != INST_START) 595 continue; 596 597 if (inst->session_type == VIDC_SESSION_TYPE_DEC) 598 vpp_freq = inst_pos->clk_data.vpp_freq; 599 else if (inst->session_type == VIDC_SESSION_TYPE_ENC) 600 vpp_freq = low_power ? inst_pos->clk_data.low_power_freq : 601 inst_pos->clk_data.vpp_freq; 602 else 603 continue; 604 605 coreid = inst_pos->clk_data.core_id; 606 607 mbs_per_sec = load_per_instance(inst_pos); 608 load = mbs_per_sec * vpp_freq; 609 610 if ((coreid & VIDC_CORE_ID_3) == VIDC_CORE_ID_3) { 611 core1_load += load / 2; 612 core2_load += load / 2; 613 } else if (coreid & VIDC_CORE_ID_1) { 614 core1_load += load; 615 } else if (coreid & VIDC_CORE_ID_2) { 616 core2_load += load; 617 } 618 } 619 620 *min_coreid = core1_load <= core2_load ? 621 VIDC_CORE_ID_1 : VIDC_CORE_ID_2; 622 *min_load = min(core1_load, core2_load); 623 624 if (cores_max < VIDC_CORE_ID_2 || core->res->vcodec_num < 2) { 625 *min_coreid = VIDC_CORE_ID_1; 626 *min_load = core1_load; 627 } 628 629 mutex_unlock(&core->lock); 630 } 631 632 static int decide_core(struct venus_inst *inst) 633 { 634 const u32 ptype = HFI_PROPERTY_CONFIG_VIDEOCORES_USAGE; 635 struct venus_core *core = inst->core; 636 u32 min_coreid, min_load, cur_inst_load; 637 u32 min_lp_coreid, min_lp_load, cur_inst_lp_load; 638 struct hfi_videocores_usage_type cu; 639 unsigned long max_freq; 640 int ret = 0; 641 642 if (legacy_binding) { 643 if (inst->session_type == VIDC_SESSION_TYPE_DEC) 644 cu.video_core_enable_mask = VIDC_CORE_ID_1; 645 else 646 cu.video_core_enable_mask = VIDC_CORE_ID_2; 647 648 goto done; 649 } 650 651 if (inst->clk_data.core_id != VIDC_CORE_ID_DEFAULT) 652 return 0; 653 654 cur_inst_load = load_per_instance(inst); 655 cur_inst_load *= inst->clk_data.vpp_freq; 656 /*TODO : divide this inst->load by work_route */ 657 658 cur_inst_lp_load = load_per_instance(inst); 659 cur_inst_lp_load *= inst->clk_data.low_power_freq; 660 /*TODO : divide this inst->load by work_route */ 661 662 max_freq = core->res->freq_tbl[0].freq; 663 664 min_loaded_core(inst, &min_coreid, &min_load, false); 665 min_loaded_core(inst, &min_lp_coreid, &min_lp_load, true); 666 667 if (cur_inst_load + min_load <= max_freq) { 668 inst->clk_data.core_id = min_coreid; 669 cu.video_core_enable_mask = min_coreid; 670 } else if (cur_inst_lp_load + min_load <= max_freq) { 671 /* Move current instance to LP and return */ 672 inst->clk_data.core_id = min_coreid; 673 cu.video_core_enable_mask = min_coreid; 674 power_save_mode_enable(inst, true); 675 } else if (cur_inst_lp_load + min_lp_load <= max_freq) { 676 /* Move all instances to LP mode and return */ 677 inst->clk_data.core_id = min_lp_coreid; 678 cu.video_core_enable_mask = min_lp_coreid; 679 move_core_to_power_save_mode(core, min_lp_coreid); 680 } else { 681 dev_warn(core->dev, "HW can't support this load"); 682 return -EINVAL; 683 } 684 685 done: 686 ret = hfi_session_set_property(inst, ptype, &cu); 687 if (ret) 688 return ret; 689 690 return ret; 691 } 692 693 static int acquire_core(struct venus_inst *inst) 694 { 695 struct venus_core *core = inst->core; 696 unsigned int coreid_mask = 0; 697 698 if (inst->core_acquired) 699 return 0; 700 701 inst->core_acquired = true; 702 703 if (inst->clk_data.core_id & VIDC_CORE_ID_1) { 704 if (core->core0_usage_count++) 705 return 0; 706 707 coreid_mask = VIDC_CORE_ID_1; 708 } 709 710 if (inst->clk_data.core_id & VIDC_CORE_ID_2) { 711 if (core->core1_usage_count++) 712 return 0; 713 714 coreid_mask |= VIDC_CORE_ID_2; 715 } 716 717 return poweron_coreid(core, coreid_mask); 718 } 719 720 static int release_core(struct venus_inst *inst) 721 { 722 struct venus_core *core = inst->core; 723 unsigned int coreid_mask = 0; 724 int ret; 725 726 if (!inst->core_acquired) 727 return 0; 728 729 if (inst->clk_data.core_id & VIDC_CORE_ID_1) { 730 if (--core->core0_usage_count) 731 goto done; 732 733 coreid_mask = VIDC_CORE_ID_1; 734 } 735 736 if (inst->clk_data.core_id & VIDC_CORE_ID_2) { 737 if (--core->core1_usage_count) 738 goto done; 739 740 coreid_mask |= VIDC_CORE_ID_2; 741 } 742 743 ret = poweroff_coreid(core, coreid_mask); 744 if (ret) 745 return ret; 746 747 done: 748 inst->clk_data.core_id = VIDC_CORE_ID_DEFAULT; 749 inst->core_acquired = false; 750 return 0; 751 } 752 753 static int coreid_power_v4(struct venus_inst *inst, int on) 754 { 755 struct venus_core *core = inst->core; 756 int ret; 757 758 if (legacy_binding) 759 return 0; 760 761 if (on == POWER_ON) { 762 ret = decide_core(inst); 763 if (ret) 764 return ret; 765 766 mutex_lock(&core->lock); 767 ret = acquire_core(inst); 768 mutex_unlock(&core->lock); 769 } else { 770 mutex_lock(&core->lock); 771 ret = release_core(inst); 772 mutex_unlock(&core->lock); 773 } 774 775 return ret; 776 } 777 778 static int vdec_get_v4(struct device *dev) 779 { 780 struct venus_core *core = dev_get_drvdata(dev); 781 782 if (!legacy_binding) 783 return 0; 784 785 return vcodec_clks_get(core, dev, core->vcodec0_clks, 786 core->res->vcodec0_clks); 787 } 788 789 static void vdec_put_v4(struct device *dev) 790 { 791 struct venus_core *core = dev_get_drvdata(dev); 792 unsigned int i; 793 794 if (!legacy_binding) 795 return; 796 797 for (i = 0; i < core->res->vcodec_clks_num; i++) 798 core->vcodec0_clks[i] = NULL; 799 } 800 801 static int vdec_power_v4(struct device *dev, int on) 802 { 803 struct venus_core *core = dev_get_drvdata(dev); 804 int ret; 805 806 if (!legacy_binding) 807 return 0; 808 809 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, true); 810 if (ret) 811 return ret; 812 813 if (on == POWER_ON) 814 ret = vcodec_clks_enable(core, core->vcodec0_clks); 815 else 816 vcodec_clks_disable(core, core->vcodec0_clks); 817 818 ret = vcodec_control_v4(core, VIDC_CORE_ID_1, false); 819 820 return ret; 821 } 822 823 static int venc_get_v4(struct device *dev) 824 { 825 struct venus_core *core = dev_get_drvdata(dev); 826 827 if (!legacy_binding) 828 return 0; 829 830 return vcodec_clks_get(core, dev, core->vcodec1_clks, 831 core->res->vcodec1_clks); 832 } 833 834 static void venc_put_v4(struct device *dev) 835 { 836 struct venus_core *core = dev_get_drvdata(dev); 837 unsigned int i; 838 839 if (!legacy_binding) 840 return; 841 842 for (i = 0; i < core->res->vcodec_clks_num; i++) 843 core->vcodec1_clks[i] = NULL; 844 } 845 846 static int venc_power_v4(struct device *dev, int on) 847 { 848 struct venus_core *core = dev_get_drvdata(dev); 849 int ret; 850 851 if (!legacy_binding) 852 return 0; 853 854 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, true); 855 if (ret) 856 return ret; 857 858 if (on == POWER_ON) 859 ret = vcodec_clks_enable(core, core->vcodec1_clks); 860 else 861 vcodec_clks_disable(core, core->vcodec1_clks); 862 863 ret = vcodec_control_v4(core, VIDC_CORE_ID_2, false); 864 865 return ret; 866 } 867 868 static int vcodec_domains_get(struct venus_core *core) 869 { 870 int ret; 871 struct device *dev = core->dev; 872 const struct venus_resources *res = core->res; 873 struct dev_pm_domain_attach_data vcodec_data = { 874 .pd_names = res->vcodec_pmdomains, 875 .num_pd_names = res->vcodec_pmdomains_num, 876 .pd_flags = PD_FLAG_NO_DEV_LINK, 877 }; 878 struct dev_pm_domain_attach_data opp_pd_data = { 879 .pd_names = res->opp_pmdomain, 880 .num_pd_names = 1, 881 .pd_flags = PD_FLAG_DEV_LINK_ON | PD_FLAG_REQUIRED_OPP, 882 }; 883 884 if (!res->vcodec_pmdomains_num) 885 goto skip_pmdomains; 886 887 ret = devm_pm_domain_attach_list(dev, &vcodec_data, &core->pmdomains); 888 if (ret < 0) 889 return ret; 890 891 skip_pmdomains: 892 if (!res->opp_pmdomain) 893 return 0; 894 895 /* Attach the power domain for setting performance state */ 896 ret = devm_pm_domain_attach_list(dev, &opp_pd_data, &core->opp_pmdomain); 897 if (ret < 0) 898 return ret; 899 900 return 0; 901 } 902 903 static int core_resets_reset(struct venus_core *core) 904 { 905 const struct venus_resources *res = core->res; 906 unsigned int i; 907 int ret; 908 909 if (!res->resets_num) 910 return 0; 911 912 for (i = 0; i < res->resets_num; i++) { 913 ret = reset_control_assert(core->resets[i]); 914 if (ret) 915 goto err; 916 917 usleep_range(150, 250); 918 ret = reset_control_deassert(core->resets[i]); 919 if (ret) 920 goto err; 921 } 922 923 err: 924 return ret; 925 } 926 927 static int core_resets_get(struct venus_core *core) 928 { 929 struct device *dev = core->dev; 930 const struct venus_resources *res = core->res; 931 unsigned int i; 932 int ret; 933 934 if (!res->resets_num) 935 return 0; 936 937 for (i = 0; i < res->resets_num; i++) { 938 core->resets[i] = 939 devm_reset_control_get_exclusive(dev, res->resets[i]); 940 if (IS_ERR(core->resets[i])) { 941 ret = PTR_ERR(core->resets[i]); 942 return ret; 943 } 944 } 945 946 return 0; 947 } 948 949 static int core_get_v4(struct venus_core *core) 950 { 951 struct device *dev = core->dev; 952 const struct venus_resources *res = core->res; 953 int ret; 954 955 ret = core_clks_get(core); 956 if (ret) 957 return ret; 958 959 if (!res->vcodec_pmdomains_num) 960 legacy_binding = true; 961 962 dev_info(dev, "%s legacy binding\n", legacy_binding ? "" : "non"); 963 964 ret = vcodec_clks_get(core, dev, core->vcodec0_clks, res->vcodec0_clks); 965 if (ret) 966 return ret; 967 968 ret = vcodec_clks_get(core, dev, core->vcodec1_clks, res->vcodec1_clks); 969 if (ret) 970 return ret; 971 972 ret = core_resets_get(core); 973 if (ret) 974 return ret; 975 976 if (legacy_binding) 977 return 0; 978 979 ret = devm_pm_opp_set_clkname(dev, "core"); 980 if (ret) 981 return ret; 982 983 ret = vcodec_domains_get(core); 984 if (ret) 985 return ret; 986 987 if (core->res->opp_pmdomain) { 988 ret = devm_pm_opp_of_add_table(dev); 989 if (ret && ret != -ENODEV) { 990 dev_err(dev, "invalid OPP table in device tree\n"); 991 return ret; 992 } 993 } 994 995 return 0; 996 } 997 998 static void core_put_v4(struct venus_core *core) 999 { 1000 } 1001 1002 static int core_power_v4(struct venus_core *core, int on) 1003 { 1004 struct device *dev = core->dev; 1005 struct device *pmctrl = core->pmdomains ? 1006 core->pmdomains->pd_devs[0] : NULL; 1007 int ret = 0; 1008 1009 if (on == POWER_ON) { 1010 if (pmctrl) { 1011 ret = pm_runtime_resume_and_get(pmctrl); 1012 if (ret < 0) { 1013 return ret; 1014 } 1015 } 1016 1017 ret = core_resets_reset(core); 1018 if (ret) { 1019 if (pmctrl) 1020 pm_runtime_put_sync(pmctrl); 1021 return ret; 1022 } 1023 1024 ret = core_clks_enable(core); 1025 if (ret < 0 && pmctrl) 1026 pm_runtime_put_sync(pmctrl); 1027 } else { 1028 /* Drop the performance state vote */ 1029 if (core->opp_pmdomain) 1030 dev_pm_opp_set_rate(dev, 0); 1031 1032 core_clks_disable(core); 1033 1034 ret = core_resets_reset(core); 1035 1036 if (pmctrl) 1037 pm_runtime_put_sync(pmctrl); 1038 } 1039 1040 return ret; 1041 } 1042 1043 static unsigned long calculate_inst_freq(struct venus_inst *inst, 1044 unsigned long filled_len) 1045 { 1046 unsigned long vpp_freq_per_mb = 0, vpp_freq = 0, vsp_freq = 0; 1047 u32 fps = (u32)inst->fps; 1048 u32 mbs_per_sec; 1049 1050 mbs_per_sec = load_per_instance(inst); 1051 1052 if (inst->state != INST_START) 1053 return 0; 1054 1055 if (inst->session_type == VIDC_SESSION_TYPE_ENC) { 1056 vpp_freq_per_mb = inst->flags & VENUS_LOW_POWER ? 1057 inst->clk_data.low_power_freq : 1058 inst->clk_data.vpp_freq; 1059 1060 vpp_freq = mbs_per_sec * vpp_freq_per_mb; 1061 } else { 1062 vpp_freq = mbs_per_sec * inst->clk_data.vpp_freq; 1063 } 1064 1065 /* 21 / 20 is overhead factor */ 1066 vpp_freq += vpp_freq / 20; 1067 vsp_freq = mbs_per_sec * inst->clk_data.vsp_freq; 1068 1069 /* 10 / 7 is overhead factor */ 1070 if (inst->session_type == VIDC_SESSION_TYPE_ENC) 1071 vsp_freq += (inst->controls.enc.bitrate * 10) / 7; 1072 else 1073 vsp_freq += ((fps * filled_len * 8) * 10) / 7; 1074 1075 return max(vpp_freq, vsp_freq); 1076 } 1077 1078 static int load_scale_v4(struct venus_inst *inst) 1079 { 1080 struct venus_core *core = inst->core; 1081 const struct freq_tbl *table = core->res->freq_tbl; 1082 unsigned int num_rows = core->res->freq_tbl_size; 1083 struct device *dev = core->dev; 1084 unsigned long freq = 0, freq_core1 = 0, freq_core2 = 0; 1085 unsigned long filled_len = 0; 1086 int i, ret = 0; 1087 1088 for (i = 0; i < inst->num_input_bufs; i++) 1089 filled_len = max(filled_len, inst->payloads[i]); 1090 1091 if (inst->session_type == VIDC_SESSION_TYPE_DEC && !filled_len) 1092 return ret; 1093 1094 freq = calculate_inst_freq(inst, filled_len); 1095 inst->clk_data.freq = freq; 1096 1097 mutex_lock(&core->lock); 1098 list_for_each_entry(inst, &core->instances, list) { 1099 if (inst->clk_data.core_id == VIDC_CORE_ID_1) { 1100 freq_core1 += inst->clk_data.freq; 1101 } else if (inst->clk_data.core_id == VIDC_CORE_ID_2) { 1102 freq_core2 += inst->clk_data.freq; 1103 } else if (inst->clk_data.core_id == VIDC_CORE_ID_3) { 1104 freq_core1 += inst->clk_data.freq; 1105 freq_core2 += inst->clk_data.freq; 1106 } 1107 } 1108 1109 freq = max(freq_core1, freq_core2); 1110 1111 if (freq > table[0].freq) { 1112 dev_dbg(dev, VDBGL "requested clock rate: %lu scaling clock rate : %lu\n", 1113 freq, table[0].freq); 1114 1115 freq = table[0].freq; 1116 goto set_freq; 1117 } 1118 1119 for (i = num_rows - 1 ; i >= 0; i--) { 1120 if (freq <= table[i].freq) { 1121 freq = table[i].freq; 1122 break; 1123 } 1124 } 1125 1126 set_freq: 1127 1128 ret = core_clks_set_rate(core, freq); 1129 if (ret) { 1130 dev_err(dev, "failed to set clock rate %lu (%d)\n", 1131 freq, ret); 1132 goto exit; 1133 } 1134 1135 ret = load_scale_bw(core); 1136 if (ret) { 1137 dev_err(dev, "failed to set bandwidth (%d)\n", 1138 ret); 1139 goto exit; 1140 } 1141 1142 exit: 1143 mutex_unlock(&core->lock); 1144 return ret; 1145 } 1146 1147 static const struct venus_pm_ops pm_ops_v4 = { 1148 .core_get = core_get_v4, 1149 .core_put = core_put_v4, 1150 .core_power = core_power_v4, 1151 .vdec_get = vdec_get_v4, 1152 .vdec_put = vdec_put_v4, 1153 .vdec_power = vdec_power_v4, 1154 .venc_get = venc_get_v4, 1155 .venc_put = venc_put_v4, 1156 .venc_power = venc_power_v4, 1157 .coreid_power = coreid_power_v4, 1158 .load_scale = load_scale_v4, 1159 }; 1160 1161 const struct venus_pm_ops *venus_pm_get(enum hfi_version version) 1162 { 1163 switch (version) { 1164 case HFI_VERSION_1XX: 1165 default: 1166 return &pm_ops_v1; 1167 case HFI_VERSION_3XX: 1168 return &pm_ops_v3; 1169 case HFI_VERSION_4XX: 1170 case HFI_VERSION_6XX: 1171 return &pm_ops_v4; 1172 } 1173 1174 return NULL; 1175 } 1176