drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c

   1 /*
   2  * Copyright 2018 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: AMD
  23  *
  24  */
  25
  26 #include "dccg.h"
  27 #include "clk_mgr_internal.h"
  28
  29 #include "dce100/dce_clk_mgr.h"
  30 #include "dcn20_clk_mgr.h"
  31 #include "reg_helper.h"
  32 #include "core_types.h"
  33 #include "dm_helpers.h"
  34
  35 #include "navi10_ip_offset.h"
  36 #include "dcn/dcn_2_0_0_offset.h"
  37 #include "dcn/dcn_2_0_0_sh_mask.h"
  38 #include "clk/clk_11_0_0_offset.h"
  39 #include "clk/clk_11_0_0_sh_mask.h"
  40
  41 #undef FN
  42 #define FN(reg_name, field_name) \
  43         clk_mgr->clk_mgr_shift->field_name, clk_mgr->clk_mgr_mask->field_name
  44
  45 #define REG(reg) \
  46         (clk_mgr->regs->reg)
  47
  48 #define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg
  49
  50 #define BASE(seg) BASE_INNER(seg)
  51
  52 #define SR(reg_name)\
  53                 .reg_name = BASE(mm ## reg_name ## _BASE_IDX) +  \
  54                                         mm ## reg_name
  55
  56 #define CLK_BASE_INNER(seg) \
  57         CLK_BASE__INST0_SEG ## seg
  58
  59
  60 static const struct clk_mgr_registers clk_mgr_regs = {
  61         CLK_REG_LIST_NV10()
  62 };
  63
  64 static const struct clk_mgr_shift clk_mgr_shift = {
  65         CLK_MASK_SH_LIST_NV10(__SHIFT)
  66 };
  67
  68 static const struct clk_mgr_mask clk_mgr_mask = {
  69         CLK_MASK_SH_LIST_NV10(_MASK)
  70 };
  71
  72 uint32_t dentist_get_did_from_divider(int divider)
  73 {
  74         uint32_t divider_id;
  75
  76         /* we want to floor here to get higher clock than required rather than lower */
  77         if (divider < DENTIST_DIVIDER_RANGE_2_START) {
  78                 if (divider < DENTIST_DIVIDER_RANGE_1_START)
  79                         divider_id = DENTIST_BASE_DID_1;
  80                 else
  81                         divider_id = DENTIST_BASE_DID_1
  82                                 + (divider - DENTIST_DIVIDER_RANGE_1_START)
  83                                         / DENTIST_DIVIDER_RANGE_1_STEP;
  84         } else if (divider < DENTIST_DIVIDER_RANGE_3_START) {
  85                 divider_id = DENTIST_BASE_DID_2
  86                                 + (divider - DENTIST_DIVIDER_RANGE_2_START)
  87                                         / DENTIST_DIVIDER_RANGE_2_STEP;
  88         } else if (divider < DENTIST_DIVIDER_RANGE_4_START) {
  89                 divider_id = DENTIST_BASE_DID_3
  90                                 + (divider - DENTIST_DIVIDER_RANGE_3_START)
  91                                         / DENTIST_DIVIDER_RANGE_3_STEP;
  92         } else {
  93                 divider_id = DENTIST_BASE_DID_4
  94                                 + (divider - DENTIST_DIVIDER_RANGE_4_START)
  95                                         / DENTIST_DIVIDER_RANGE_4_STEP;
  96                 if (divider_id > DENTIST_MAX_DID)
  97                         divider_id = DENTIST_MAX_DID;
  98         }
  99
 100         return divider_id;
 101 }
 102
 103 void dcn20_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr,
 104                 struct dc_state *context, bool safe_to_lower)
 105 {
 106         int i;
 107
 108         clk_mgr->dccg->ref_dppclk = clk_mgr->base.clks.dppclk_khz;
 109         for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) {
 110                 int dpp_inst, dppclk_khz, prev_dppclk_khz;
 111
 112                 /* Loop index will match dpp->inst if resource exists,
 113                  * and we want to avoid dependency on dpp object
 114                  */
 115                 dpp_inst = i;
 116                 dppclk_khz = context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz;
 117
 118                 prev_dppclk_khz = clk_mgr->base.ctx->dc->current_state->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz;
 119
 120                 if ((prev_dppclk_khz > dppclk_khz && safe_to_lower) || prev_dppclk_khz < dppclk_khz) {
 121                         clk_mgr->dccg->funcs->update_dpp_dto(
 122                                                         clk_mgr->dccg, dpp_inst, dppclk_khz);
 123                 }
 124         }
 125 }
 126
 127 void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr)
 128 {
 129         int dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR
 130                         * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dppclk_khz;
 131         int disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR
 132                         * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz;
 133
 134         uint32_t dppclk_wdivider = dentist_get_did_from_divider(dpp_divider);
 135         uint32_t dispclk_wdivider = dentist_get_did_from_divider(disp_divider);
 136
 137         REG_UPDATE(DENTIST_DISPCLK_CNTL,
 138                         DENTIST_DISPCLK_WDIVIDER, dispclk_wdivider);
 139 //      REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 5, 100);
 140         REG_UPDATE(DENTIST_DISPCLK_CNTL,
 141                         DENTIST_DPPCLK_WDIVIDER, dppclk_wdivider);
 142         REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_CHG_DONE, 1, 5, 100);
 143 }
 144
 145
 146 void dcn2_update_clocks(struct clk_mgr *clk_mgr_base,
 147                         struct dc_state *context,
 148                         bool safe_to_lower)
 149 {
 150         struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
 151         struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
 152         struct dc *dc = clk_mgr_base->ctx->dc;
 153         struct pp_smu_funcs_nv *pp_smu = NULL;
 154         int display_count;
 155         bool update_dppclk = false;
 156         bool update_dispclk = false;
 157         bool enter_display_off = false;
 158         bool dpp_clock_lowered = false;
 159         struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu;
 160         bool force_reset = false;
 161
 162         if (dc->work_arounds.skip_clock_update)
 163                 return;
 164
 165         if (clk_mgr_base->clks.dispclk_khz == 0 ||
 166                 dc->debug.force_clock_mode & 0x1) {
 167                 //this is from resume or boot up, if forced_clock cfg option used, we bypass program dispclk and DPPCLK, but need set them for S3.
 168                 force_reset = true;
 169
 170                 dcn2_read_clocks_from_hw_dentist(clk_mgr_base);
 171
 172                 //force_clock_mode 0x1:  force reset the clock even it is the same clock as long as it is in Passive level.
 173         }
 174         display_count = clk_mgr_helper_get_active_display_cnt(dc, context);
 175         if (dc->res_pool->pp_smu)
 176                 pp_smu = &dc->res_pool->pp_smu->nv_funcs;
 177
 178         if (display_count == 0)
 179                 enter_display_off = true;
 180
 181         if (enter_display_off == safe_to_lower) {
 182                 if (pp_smu && pp_smu->set_display_count)
 183                         pp_smu->set_display_count(&pp_smu->pp_smu, display_count);
 184         }
 185
 186         if (should_set_clock(safe_to_lower, new_clocks->phyclk_khz, clk_mgr_base->clks.phyclk_khz)) {
 187                 clk_mgr_base->clks.phyclk_khz = new_clocks->phyclk_khz;
 188                 if (pp_smu && pp_smu->set_voltage_by_freq)
 189                         pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_PHYCLK, clk_mgr_base->clks.phyclk_khz / 1000);
 190         }
 191
 192
 193         if (dc->debug.force_min_dcfclk_mhz > 0)
 194                 new_clocks->dcfclk_khz = (new_clocks->dcfclk_khz > (dc->debug.force_min_dcfclk_mhz * 1000)) ?
 195                                 new_clocks->dcfclk_khz : (dc->debug.force_min_dcfclk_mhz * 1000);
 196
 197         if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
 198                 clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
 199                 if (pp_smu && pp_smu->set_hard_min_dcfclk_by_freq)
 200                         pp_smu->set_hard_min_dcfclk_by_freq(&pp_smu->pp_smu, clk_mgr_base->clks.dcfclk_khz / 1000);
 201         }
 202
 203         if (should_set_clock(safe_to_lower,
 204                         new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) {
 205                 clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
 206                 if (pp_smu && pp_smu->set_min_deep_sleep_dcfclk)
 207                         pp_smu->set_min_deep_sleep_dcfclk(&pp_smu->pp_smu, clk_mgr_base->clks.dcfclk_deep_sleep_khz / 1000);
 208         }
 209
 210         if (should_set_clock(safe_to_lower, new_clocks->socclk_khz, clk_mgr_base->clks.socclk_khz)) {
 211                 clk_mgr_base->clks.socclk_khz = new_clocks->socclk_khz;
 212                 if (pp_smu && pp_smu->set_hard_min_socclk_by_freq)
 213                         pp_smu->set_hard_min_socclk_by_freq(&pp_smu->pp_smu, clk_mgr_base->clks.socclk_khz / 1000);
 214         }
 215
 216         if (should_update_pstate_support(safe_to_lower, new_clocks->p_state_change_support, clk_mgr_base->clks.p_state_change_support)) {
 217                 clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support;
 218                 clk_mgr_base->clks.p_state_change_support = new_clocks->p_state_change_support;
 219                 if (pp_smu && pp_smu->set_pstate_handshake_support)
 220                         pp_smu->set_pstate_handshake_support(&pp_smu->pp_smu, clk_mgr_base->clks.p_state_change_support);
 221         }
 222
 223         if (should_set_clock(safe_to_lower, new_clocks->dramclk_khz, clk_mgr_base->clks.dramclk_khz)) {
 224                 clk_mgr_base->clks.dramclk_khz = new_clocks->dramclk_khz;
 225                 if (pp_smu && pp_smu->set_hard_min_uclk_by_freq)
 226                         pp_smu->set_hard_min_uclk_by_freq(&pp_smu->pp_smu, clk_mgr_base->clks.dramclk_khz / 1000);
 227         }
 228
 229         if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
 230                 if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz)
 231                         dpp_clock_lowered = true;
 232                 clk_mgr->base.clks.dppclk_khz = new_clocks->dppclk_khz;
 233
 234                 if (pp_smu && pp_smu->set_voltage_by_freq)
 235                         pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_PIXELCLK, clk_mgr_base->clks.dppclk_khz / 1000);
 236
 237                 update_dppclk = true;
 238         }
 239
 240         if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
 241                 clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
 242                 if (pp_smu && pp_smu->set_voltage_by_freq)
 243                         pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_DISPCLK, clk_mgr_base->clks.dispclk_khz / 1000);
 244
 245                 update_dispclk = true;
 246         }
 247
 248         if (dc->config.forced_clocks == false || (force_reset && safe_to_lower)) {
 249                 if (dpp_clock_lowered) {
 250                         // if clock is being lowered, increase DTO before lowering refclk
 251                         dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
 252                         dcn20_update_clocks_update_dentist(clk_mgr);
 253                 } else {
 254                         // if clock is being raised, increase refclk before lowering DTO
 255                         if (update_dppclk || update_dispclk)
 256                                 dcn20_update_clocks_update_dentist(clk_mgr);
 257                         // always update dtos unless clock is lowered and not safe to lower
 258                         if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz)
 259                                 dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
 260                 }
 261         }
 262
 263         if (update_dispclk &&
 264                         dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) {
 265                 /*update dmcu for wait_loop count*/
 266                 dmcu->funcs->set_psr_wait_loop(dmcu,
 267                         clk_mgr_base->clks.dispclk_khz / 1000 / 7);
 268         }
 269 }
 270
 271 void dcn2_update_clocks_fpga(struct clk_mgr *clk_mgr,
 272                 struct dc_state *context,
 273                 bool safe_to_lower)
 274 {
 275         struct clk_mgr_internal *clk_mgr_int = TO_CLK_MGR_INTERNAL(clk_mgr);
 276
 277         struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
 278         /* Min fclk = 1.2GHz since all the extra scemi logic seems to run off of it */
 279         int fclk_adj = new_clocks->fclk_khz > 1200000 ? new_clocks->fclk_khz : 1200000;
 280
 281         if (should_set_clock(safe_to_lower, new_clocks->phyclk_khz, clk_mgr->clks.phyclk_khz)) {
 282                 clk_mgr->clks.phyclk_khz = new_clocks->phyclk_khz;
 283         }
 284
 285         if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr->clks.dcfclk_khz)) {
 286                 clk_mgr->clks.dcfclk_khz = new_clocks->dcfclk_khz;
 287         }
 288
 289         if (should_set_clock(safe_to_lower,
 290                         new_clocks->dcfclk_deep_sleep_khz, clk_mgr->clks.dcfclk_deep_sleep_khz)) {
 291                 clk_mgr->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
 292         }
 293
 294         if (should_set_clock(safe_to_lower, new_clocks->socclk_khz, clk_mgr->clks.socclk_khz)) {
 295                 clk_mgr->clks.socclk_khz = new_clocks->socclk_khz;
 296         }
 297
 298         if (should_set_clock(safe_to_lower, new_clocks->dramclk_khz, clk_mgr->clks.dramclk_khz)) {
 299                 clk_mgr->clks.dramclk_khz = new_clocks->dramclk_khz;
 300         }
 301
 302         if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->clks.dppclk_khz)) {
 303                 clk_mgr->clks.dppclk_khz = new_clocks->dppclk_khz;
 304         }
 305
 306         if (should_set_clock(safe_to_lower, fclk_adj, clk_mgr->clks.fclk_khz)) {
 307                 clk_mgr->clks.fclk_khz = fclk_adj;
 308         }
 309
 310         if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr->clks.dispclk_khz)) {
 311                 clk_mgr->clks.dispclk_khz = new_clocks->dispclk_khz;
 312         }
 313
 314         /* Both fclk and ref_dppclk run on the same scemi clock.
 315          * So take the higher value since the DPP DTO is typically programmed
 316          * such that max dppclk is 1:1 with ref_dppclk.
 317          */
 318         if (clk_mgr->clks.fclk_khz > clk_mgr->clks.dppclk_khz)
 319                 clk_mgr->clks.dppclk_khz = clk_mgr->clks.fclk_khz;
 320         if (clk_mgr->clks.dppclk_khz > clk_mgr->clks.fclk_khz)
 321                 clk_mgr->clks.fclk_khz = clk_mgr->clks.dppclk_khz;
 322
 323         // Both fclk and ref_dppclk run on the same scemi clock.
 324         clk_mgr_int->dccg->ref_dppclk = clk_mgr->clks.fclk_khz;
 325
 326         dm_set_dcn_clocks(clk_mgr->ctx, &clk_mgr->clks);
 327 }
 328
 329 void dcn2_init_clocks(struct clk_mgr *clk_mgr)
 330 {
 331         memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks));
 332         // Assumption is that boot state always supports pstate
 333         clk_mgr->clks.p_state_change_support = true;
 334         clk_mgr->clks.prev_p_state_change_support = true;
 335 }
 336
 337 void dcn2_enable_pme_wa(struct clk_mgr *clk_mgr_base)
 338 {
 339         struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
 340         struct pp_smu_funcs_nv *pp_smu = NULL;
 341
 342         if (clk_mgr->pp_smu) {
 343                 pp_smu = &clk_mgr->pp_smu->nv_funcs;
 344
 345                 if (pp_smu->set_pme_wa_enable)
 346                         pp_smu->set_pme_wa_enable(&pp_smu->pp_smu);
 347         }
 348 }
 349
 350
 351 void dcn2_read_clocks_from_hw_dentist(struct clk_mgr *clk_mgr_base)
 352 {
 353         struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
 354         uint32_t dispclk_wdivider;
 355         uint32_t dppclk_wdivider;
 356         int disp_divider;
 357         int dpp_divider;
 358
 359         REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, &dispclk_wdivider);
 360         REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_WDIVIDER, &dppclk_wdivider);
 361
 362         disp_divider = dentist_get_divider_from_did(dispclk_wdivider);
 363         dpp_divider = dentist_get_divider_from_did(dispclk_wdivider);
 364
 365         if (disp_divider && dpp_divider) {
 366                 /* Calculate the current DFS clock, in kHz.*/
 367                 clk_mgr_base->clks.dispclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR
 368                         * clk_mgr->base.dentist_vco_freq_khz) / disp_divider;
 369
 370                 clk_mgr_base->clks.dppclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR
 371                                 * clk_mgr->base.dentist_vco_freq_khz) / dpp_divider;
 372         }
 373
 374 }
 375
 376 void dcn2_get_clock(struct clk_mgr *clk_mgr,
 377                 struct dc_state *context,
 378                         enum dc_clock_type clock_type,
 379                         struct dc_clock_config *clock_cfg)
 380 {
 381
 382         if (clock_type == DC_CLOCK_TYPE_DISPCLK) {
 383                 clock_cfg->max_clock_khz = context->bw_ctx.bw.dcn.clk.max_supported_dispclk_khz;
 384                 clock_cfg->min_clock_khz = DCN_MINIMUM_DISPCLK_Khz;
 385                 clock_cfg->current_clock_khz = clk_mgr->clks.dispclk_khz;
 386                 clock_cfg->bw_requirequired_clock_khz = context->bw_ctx.bw.dcn.clk.bw_dispclk_khz;
 387         }
 388         if (clock_type == DC_CLOCK_TYPE_DPPCLK) {
 389                 clock_cfg->max_clock_khz = context->bw_ctx.bw.dcn.clk.max_supported_dppclk_khz;
 390                 clock_cfg->min_clock_khz = DCN_MINIMUM_DPPCLK_Khz;
 391                 clock_cfg->current_clock_khz = clk_mgr->clks.dppclk_khz;
 392                 clock_cfg->bw_requirequired_clock_khz = context->bw_ctx.bw.dcn.clk.bw_dppclk_khz;
 393         }
 394 }
 395
 396 static bool dcn2_are_clock_states_equal(struct dc_clocks *a,
 397                 struct dc_clocks *b)
 398 {
 399         if (a->dispclk_khz != b->dispclk_khz)
 400                 return false;
 401         else if (a->dppclk_khz != b->dppclk_khz)
 402                 return false;
 403         else if (a->dcfclk_khz != b->dcfclk_khz)
 404                 return false;
 405         else if (a->socclk_khz != b->socclk_khz)
 406                 return false;
 407         else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz)
 408                 return false;
 409         else if (a->phyclk_khz != b->phyclk_khz)
 410                 return false;
 411         else if (a->dramclk_khz != b->dramclk_khz)
 412                 return false;
 413         else if (a->p_state_change_support != b->p_state_change_support)
 414                 return false;
 415
 416         return true;
 417 }
 418
 419 static struct clk_mgr_funcs dcn2_funcs = {
 420         .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
 421         .update_clocks = dcn2_update_clocks,
 422         .init_clocks = dcn2_init_clocks,
 423         .enable_pme_wa = dcn2_enable_pme_wa,
 424         .get_clock = dcn2_get_clock,
 425         .are_clock_states_equal = dcn2_are_clock_states_equal,
 426 };
 427
 428
 429 void dcn20_clk_mgr_construct(
 430                 struct dc_context *ctx,
 431                 struct clk_mgr_internal *clk_mgr,
 432                 struct pp_smu_funcs *pp_smu,
 433                 struct dccg *dccg)
 434 {
 435         clk_mgr->base.ctx = ctx;
 436         clk_mgr->pp_smu = pp_smu;
 437         clk_mgr->base.funcs = &dcn2_funcs;
 438         clk_mgr->regs = &clk_mgr_regs;
 439         clk_mgr->clk_mgr_shift = &clk_mgr_shift;
 440         clk_mgr->clk_mgr_mask = &clk_mgr_mask;
 441
 442         clk_mgr->dccg = dccg;
 443         clk_mgr->dfs_bypass_disp_clk = 0;
 444
 445         clk_mgr->dprefclk_ss_percentage = 0;
 446         clk_mgr->dprefclk_ss_divider = 1000;
 447         clk_mgr->ss_on_dprefclk = false;
 448
 449         clk_mgr->base.dprefclk_khz = 700000; // 700 MHz planned if VCO is 3.85 GHz, will be retrieved
 450
 451         if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) {
 452                 dcn2_funcs.update_clocks = dcn2_update_clocks_fpga;
 453                 clk_mgr->base.dentist_vco_freq_khz = 3850000;
 454
 455         } else {
 456                 /* DFS Slice 2 should be used for DPREFCLK */
 457                 int dprefclk_did = REG_READ(CLK3_CLK2_DFS_CNTL);
 458                 /* Convert DPREFCLK DFS Slice DID to actual divider*/
 459                 int target_div = dentist_get_divider_from_did(dprefclk_did);
 460
 461                 /* get FbMult value */
 462                 uint32_t pll_req_reg = REG_READ(CLK3_CLK_PLL_REQ);
 463                 struct fixed31_32 pll_req;
 464
 465                 /* set up a fixed-point number
 466                  * this works because the int part is on the right edge of the register
 467                  * and the frac part is on the left edge
 468                  */
 469
 470                 pll_req = dc_fixpt_from_int(pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_int);
 471                 pll_req.value |= pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_frac;
 472
 473                 /* multiply by REFCLK period */
 474                 pll_req = dc_fixpt_mul_int(pll_req, 100000);
 475
 476                 /* integer part is now VCO frequency in kHz */
 477                 clk_mgr->base.dentist_vco_freq_khz = dc_fixpt_floor(pll_req);
 478
 479                 /* in case we don't get a value from the register, use default */
 480                 if (clk_mgr->base.dentist_vco_freq_khz == 0)
 481                         clk_mgr->base.dentist_vco_freq_khz = 3850000;
 482
 483                 /* Calculate the DPREFCLK in kHz.*/
 484                 clk_mgr->base.dprefclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR
 485                         * clk_mgr->base.dentist_vco_freq_khz) / target_div;
 486         }
 487         //Integrated_info table does not exist on dGPU projects so should not be referenced
 488         //anywhere in code for dGPUs.
 489         //Also there is no plan for now that DFS BYPASS will be used on NV10/12/14.
 490         clk_mgr->dfs_bypass_enabled = false;
 491
 492         dce_clock_read_ss_info(clk_mgr);
 493 }
 494